source "drivers/staging/wlags49_h25/Kconfig"
-source "drivers/staging/batman-adv/Kconfig"
-
source "drivers/staging/samsung-laptop/Kconfig"
source "drivers/staging/sm7xx/Kconfig"
obj-$(CONFIG_ZRAM) += zram/
obj-$(CONFIG_WLAGS49_H2) += wlags49_h2/
obj-$(CONFIG_WLAGS49_H25) += wlags49_h25/
-obj-$(CONFIG_BATMAN_ADV) += batman-adv/
obj-$(CONFIG_SAMSUNG_LAPTOP) += samsung-laptop/
obj-$(CONFIG_FB_SM7XX) += sm7xx/
obj-$(CONFIG_VIDEO_DT3155) += dt3155v4l/
+++ /dev/null
-#
-# B.A.T.M.A.N meshing protocol
-#
-
-config BATMAN_ADV
- tristate "B.A.T.M.A.N. Advanced Meshing Protocol"
- depends on NET
- default n
- ---help---
-
- B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is
- a routing protocol for multi-hop ad-hoc mesh networks. The
- networks may be wired or wireless. See
- http://www.open-mesh.org/ for more information and user space
- tools.
-
-config BATMAN_ADV_DEBUG
- bool "B.A.T.M.A.N. debugging"
- depends on BATMAN_ADV != n
- ---help---
-
- This is an option for use by developers; most people should
- say N here. This enables compilation of support for
- outputting debugging information to the kernel log. The
- output is controlled via the module parameter debug.
-
+++ /dev/null
-#
-# Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
-#
-# Marek Lindner, Simon Wunderlich
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of version 2 of the GNU General Public
-# License as published by the Free Software Foundation.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA
-#
-
-obj-$(CONFIG_BATMAN_ADV) += batman-adv.o
-batman-adv-y += aggregation.o
-batman-adv-y += bat_debugfs.o
-batman-adv-y += bat_sysfs.o
-batman-adv-y += bitarray.o
-batman-adv-y += gateway_client.o
-batman-adv-y += gateway_common.o
-batman-adv-y += hard-interface.o
-batman-adv-y += hash.o
-batman-adv-y += icmp_socket.o
-batman-adv-y += main.o
-batman-adv-y += originator.o
-batman-adv-y += ring_buffer.o
-batman-adv-y += routing.o
-batman-adv-y += send.o
-batman-adv-y += soft-interface.o
-batman-adv-y += translation-table.o
-batman-adv-y += unicast.o
-batman-adv-y += vis.o
+++ /dev/null
-[state: 21-11-2010]
-
-BATMAN-ADV
-----------
-
-Batman advanced is a new approach to wireless networking which
-does no longer operate on the IP basis. Unlike the batman daemon,
-which exchanges information using UDP packets and sets routing
-tables, batman-advanced operates on ISO/OSI Layer 2 only and uses
-and routes (or better: bridges) Ethernet Frames. It emulates a
-virtual network switch of all nodes participating. Therefore all
-nodes appear to be link local, thus all higher operating proto-
-cols won't be affected by any changes within the network. You can
-run almost any protocol above batman advanced, prominent examples
-are: IPv4, IPv6, DHCP, IPX.
-
-Batman advanced was implemented as a Linux kernel driver to re-
-duce the overhead to a minimum. It does not depend on any (other)
-network driver, and can be used on wifi as well as ethernet lan,
-vpn, etc ... (anything with ethernet-style layer 2).
-
-CONFIGURATION
--------------
-
-Load the batman-adv module into your kernel:
-
-# insmod batman-adv.ko
-
-The module is now waiting for activation. You must add some in-
-terfaces on which batman can operate. After loading the module
-batman advanced will scan your systems interfaces to search for
-compatible interfaces. Once found, it will create subfolders in
-the /sys directories of each supported interface, e.g.
-
-# ls /sys/class/net/eth0/batman_adv/
-# iface_status mesh_iface
-
-If an interface does not have the "batman_adv" subfolder it prob-
-ably is not supported. Not supported interfaces are: loopback,
-non-ethernet and batman's own interfaces.
-
-Note: After the module was loaded it will continuously watch for
-new interfaces to verify the compatibility. There is no need to
-reload the module if you plug your USB wifi adapter into your ma-
-chine after batman advanced was initially loaded.
-
-To activate a given interface simply write "bat0" into its
-"mesh_iface" file inside the batman_adv subfolder:
-
-# echo bat0 > /sys/class/net/eth0/batman_adv/mesh_iface
-
-Repeat this step for all interfaces you wish to add. Now batman
-starts using/broadcasting on this/these interface(s).
-
-By reading the "iface_status" file you can check its status:
-
-# cat /sys/class/net/eth0/batman_adv/iface_status
-# active
-
-To deactivate an interface you have to write "none" into its
-"mesh_iface" file:
-
-# echo none > /sys/class/net/eth0/batman_adv/mesh_iface
-
-
-All mesh wide settings can be found in batman's own interface
-folder:
-
-# ls /sys/class/net/bat0/mesh/
-# aggregated_ogms bonding fragmentation orig_interval
-# vis_mode
-
-
-There is a special folder for debugging informations:
-
-# ls /sys/kernel/debug/batman_adv/bat0/
-# originators socket transtable_global transtable_local
-# vis_data
-
-
-Some of the files contain all sort of status information regard-
-ing the mesh network. For example, you can view the table of
-originators (mesh participants) with:
-
-# cat /sys/kernel/debug/batman_adv/bat0/originators
-
-Other files allow to change batman's behaviour to better fit your
-requirements. For instance, you can check the current originator
-interval (value in milliseconds which determines how often batman
-sends its broadcast packets):
-
-# cat /sys/class/net/bat0/mesh/orig_interval
-# 1000
-
-and also change its value:
-
-# echo 3000 > /sys/class/net/bat0/mesh/orig_interval
-
-In very mobile scenarios, you might want to adjust the originator
-interval to a lower value. This will make the mesh more respon-
-sive to topology changes, but will also increase the overhead.
-
-
-USAGE
------
-
-To make use of your newly created mesh, batman advanced provides
-a new interface "bat0" which you should use from this point on.
-All interfaces added to batman advanced are not relevant any
-longer because batman handles them for you. Basically, one "hands
-over" the data by using the batman interface and batman will make
-sure it reaches its destination.
-
-The "bat0" interface can be used like any other regular inter-
-face. It needs an IP address which can be either statically con-
-figured or dynamically (by using DHCP or similar services):
-
-# NodeA: ifconfig bat0 192.168.0.1
-# NodeB: ifconfig bat0 192.168.0.2
-# NodeB: ping 192.168.0.1
-
-Note: In order to avoid problems remove all IP addresses previ-
-ously assigned to interfaces now used by batman advanced, e.g.
-
-# ifconfig eth0 0.0.0.0
-
-
-VISUALIZATION
--------------
-
-If you want topology visualization, at least one mesh node must
-be configured as VIS-server:
-
-# echo "server" > /sys/class/net/bat0/mesh/vis_mode
-
-Each node is either configured as "server" or as "client" (de-
-fault: "client"). Clients send their topology data to the server
-next to them, and server synchronize with other servers. If there
-is no server configured (default) within the mesh, no topology
-information will be transmitted. With these "synchronizing
-servers", there can be 1 or more vis servers sharing the same (or
-at least very similar) data.
-
-When configured as server, you can get a topology snapshot of
-your mesh:
-
-# cat /sys/kernel/debug/batman_adv/bat0/vis_data
-
-This raw output is intended to be easily parsable and convertable
-with other tools. Have a look at the batctl README if you want a
-vis output in dot or json format for instance and how those out-
-puts could then be visualised in an image.
-
-The raw format consists of comma separated values per entry where
-each entry is giving information about a certain source inter-
-face. Each entry can/has to have the following values:
--> "mac" - mac address of an originator's source interface
- (each line begins with it)
--> "TQ mac value" - src mac's link quality towards mac address
- of a neighbor originator's interface which
- is being used for routing
--> "HNA mac" - HNA announced by source mac
--> "PRIMARY" - this is a primary interface
--> "SEC mac" - secondary mac address of source
- (requires preceding PRIMARY)
-
-The TQ value has a range from 4 to 255 with 255 being the best.
-The HNA entries are showing which hosts are connected to the mesh
-via bat0 or being bridged into the mesh network. The PRIMARY/SEC
-values are only applied on primary interfaces
-
-
-LOGGING/DEBUGGING
------------------
-
-All error messages, warnings and information messages are sent to
-the kernel log. Depending on your operating system distribution
-this can be read in one of a number of ways. Try using the com-
-mands: dmesg, logread, or looking in the files /var/log/kern.log
-or /var/log/syslog. All batman-adv messages are prefixed with
-"batman-adv:" So to see just these messages try
-
-# dmesg | grep batman-adv
-
-When investigating problems with your mesh network it is some-
-times necessary to see more detail debug messages. This must be
-enabled when compiling the batman-adv module. When building bat-
-man-adv as part of kernel, use "make menuconfig" and enable the
-option "B.A.T.M.A.N. debugging".
-
-Those additional debug messages can be accessed using a special
-file in debugfs
-
-# cat /sys/kernel/debug/batman_adv/bat0/log
-
-The additional debug output is by default disabled. It can be en-
-abled during run time. Following log_levels are defined:
-
-0 - All debug output disabled
-1 - Enable messages related to routing / flooding / broadcasting
-2 - Enable route or hna added / changed / deleted
-3 - Enable all messages
-
-The debug output can be changed at runtime using the file
-/sys/class/net/bat0/mesh/log_level. e.g.
-
-# echo 2 > /sys/class/net/bat0/mesh/log_level
-
-will enable debug messages for when routes or HNAs change.
-
-
-BATCTL
-------
-
-As batman advanced operates on layer 2 all hosts participating in
-the virtual switch are completely transparent for all protocols
-above layer 2. Therefore the common diagnosis tools do not work
-as expected. To overcome these problems batctl was created. At
-the moment the batctl contains ping, traceroute, tcpdump and
-interfaces to the kernel module settings.
-
-For more information, please see the manpage (man batctl).
-
-batctl is available on http://www.open-mesh.org/
-
-
-CONTACT
--------
-
-Please send us comments, experiences, questions, anything :)
-
-IRC: #batman on irc.freenode.org
-Mailing-list: b.a.t.m.a.n@b.a.t.m.a.n@lists.open-mesh.org
- (optional subscription at
- https://lists.open-mesh.org/mm/listinfo/b.a.t.m.a.n)
-
-You can also contact the Authors:
-
-Marek Lindner <lindner_marek@yahoo.de>
-Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
+++ /dev/null
- * Request a new review
- * Process the comments from the review
- * Move into mainline proper
-
-Please send all patches to:
- Marek Lindner <lindner_marek@yahoo.de>
- Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
- Sven Eckelmann <sven.eckelmann@gmx.de>
- b.a.t.m.a.n@lists.open-mesh.org
- Greg Kroah-Hartman <gregkh@suse.de>
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "aggregation.h"
-#include "send.h"
-#include "routing.h"
-
-/* calculate the size of the hna information for a given packet */
-static int hna_len(struct batman_packet *batman_packet)
-{
- return batman_packet->num_hna * ETH_ALEN;
-}
-
-/* return true if new_packet can be aggregated with forw_packet */
-static bool can_aggregate_with(struct batman_packet *new_batman_packet,
- int packet_len,
- unsigned long send_time,
- bool directlink,
- struct batman_if *if_incoming,
- struct forw_packet *forw_packet)
-{
- struct batman_packet *batman_packet =
- (struct batman_packet *)forw_packet->skb->data;
- int aggregated_bytes = forw_packet->packet_len + packet_len;
-
- /**
- * we can aggregate the current packet to this aggregated packet
- * if:
- *
- * - the send time is within our MAX_AGGREGATION_MS time
- * - the resulting packet wont be bigger than
- * MAX_AGGREGATION_BYTES
- */
-
- if (time_before(send_time, forw_packet->send_time) &&
- time_after_eq(send_time + msecs_to_jiffies(MAX_AGGREGATION_MS),
- forw_packet->send_time) &&
- (aggregated_bytes <= MAX_AGGREGATION_BYTES)) {
-
- /**
- * check aggregation compatibility
- * -> direct link packets are broadcasted on
- * their interface only
- * -> aggregate packet if the current packet is
- * a "global" packet as well as the base
- * packet
- */
-
- /* packets without direct link flag and high TTL
- * are flooded through the net */
- if ((!directlink) &&
- (!(batman_packet->flags & DIRECTLINK)) &&
- (batman_packet->ttl != 1) &&
-
- /* own packets originating non-primary
- * interfaces leave only that interface */
- ((!forw_packet->own) ||
- (forw_packet->if_incoming->if_num == 0)))
- return true;
-
- /* if the incoming packet is sent via this one
- * interface only - we still can aggregate */
- if ((directlink) &&
- (new_batman_packet->ttl == 1) &&
- (forw_packet->if_incoming == if_incoming) &&
-
- /* packets from direct neighbors or
- * own secondary interface packets
- * (= secondary interface packets in general) */
- (batman_packet->flags & DIRECTLINK ||
- (forw_packet->own &&
- forw_packet->if_incoming->if_num != 0)))
- return true;
- }
-
- return false;
-}
-
-#define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0)
-/* create a new aggregated packet and add this packet to it */
-static void new_aggregated_packet(unsigned char *packet_buff, int packet_len,
- unsigned long send_time, bool direct_link,
- struct batman_if *if_incoming,
- int own_packet)
-{
- struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
- struct forw_packet *forw_packet_aggr;
- unsigned char *skb_buff;
-
- /* own packet should always be scheduled */
- if (!own_packet) {
- if (!atomic_dec_not_zero(&bat_priv->batman_queue_left)) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "batman packet queue full\n");
- return;
- }
- }
-
- forw_packet_aggr = kmalloc(sizeof(struct forw_packet), GFP_ATOMIC);
- if (!forw_packet_aggr) {
- if (!own_packet)
- atomic_inc(&bat_priv->batman_queue_left);
- return;
- }
-
- if ((atomic_read(&bat_priv->aggregated_ogms)) &&
- (packet_len < MAX_AGGREGATION_BYTES))
- forw_packet_aggr->skb = dev_alloc_skb(MAX_AGGREGATION_BYTES +
- sizeof(struct ethhdr));
- else
- forw_packet_aggr->skb = dev_alloc_skb(packet_len +
- sizeof(struct ethhdr));
-
- if (!forw_packet_aggr->skb) {
- if (!own_packet)
- atomic_inc(&bat_priv->batman_queue_left);
- kfree(forw_packet_aggr);
- return;
- }
- skb_reserve(forw_packet_aggr->skb, sizeof(struct ethhdr));
-
- INIT_HLIST_NODE(&forw_packet_aggr->list);
-
- skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
- forw_packet_aggr->packet_len = packet_len;
- memcpy(skb_buff, packet_buff, packet_len);
-
- forw_packet_aggr->own = own_packet;
- forw_packet_aggr->if_incoming = if_incoming;
- forw_packet_aggr->num_packets = 0;
- forw_packet_aggr->direct_link_flags = 0;
- forw_packet_aggr->send_time = send_time;
-
- /* save packet direct link flag status */
- if (direct_link)
- forw_packet_aggr->direct_link_flags |= 1;
-
- /* add new packet to packet list */
- spin_lock_bh(&bat_priv->forw_bat_list_lock);
- hlist_add_head(&forw_packet_aggr->list, &bat_priv->forw_bat_list);
- spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-
- /* start timer for this packet */
- INIT_DELAYED_WORK(&forw_packet_aggr->delayed_work,
- send_outstanding_bat_packet);
- queue_delayed_work(bat_event_workqueue,
- &forw_packet_aggr->delayed_work,
- send_time - jiffies);
-}
-
-/* aggregate a new packet into the existing aggregation */
-static void aggregate(struct forw_packet *forw_packet_aggr,
- unsigned char *packet_buff,
- int packet_len,
- bool direct_link)
-{
- unsigned char *skb_buff;
-
- skb_buff = skb_put(forw_packet_aggr->skb, packet_len);
- memcpy(skb_buff, packet_buff, packet_len);
- forw_packet_aggr->packet_len += packet_len;
- forw_packet_aggr->num_packets++;
-
- /* save packet direct link flag status */
- if (direct_link)
- forw_packet_aggr->direct_link_flags |=
- (1 << forw_packet_aggr->num_packets);
-}
-
-void add_bat_packet_to_list(struct bat_priv *bat_priv,
- unsigned char *packet_buff, int packet_len,
- struct batman_if *if_incoming, char own_packet,
- unsigned long send_time)
-{
- /**
- * _aggr -> pointer to the packet we want to aggregate with
- * _pos -> pointer to the position in the queue
- */
- struct forw_packet *forw_packet_aggr = NULL, *forw_packet_pos = NULL;
- struct hlist_node *tmp_node;
- struct batman_packet *batman_packet =
- (struct batman_packet *)packet_buff;
- bool direct_link = batman_packet->flags & DIRECTLINK ? 1 : 0;
-
- /* find position for the packet in the forward queue */
- spin_lock_bh(&bat_priv->forw_bat_list_lock);
- /* own packets are not to be aggregated */
- if ((atomic_read(&bat_priv->aggregated_ogms)) && (!own_packet)) {
- hlist_for_each_entry(forw_packet_pos, tmp_node,
- &bat_priv->forw_bat_list, list) {
- if (can_aggregate_with(batman_packet,
- packet_len,
- send_time,
- direct_link,
- if_incoming,
- forw_packet_pos)) {
- forw_packet_aggr = forw_packet_pos;
- break;
- }
- }
- }
-
- /* nothing to aggregate with - either aggregation disabled or no
- * suitable aggregation packet found */
- if (forw_packet_aggr == NULL) {
- /* the following section can run without the lock */
- spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-
- /**
- * if we could not aggregate this packet with one of the others
- * we hold it back for a while, so that it might be aggregated
- * later on
- */
- if ((!own_packet) &&
- (atomic_read(&bat_priv->aggregated_ogms)))
- send_time += msecs_to_jiffies(MAX_AGGREGATION_MS);
-
- new_aggregated_packet(packet_buff, packet_len,
- send_time, direct_link,
- if_incoming, own_packet);
- } else {
- aggregate(forw_packet_aggr,
- packet_buff, packet_len,
- direct_link);
- spin_unlock_bh(&bat_priv->forw_bat_list_lock);
- }
-}
-
-/* unpack the aggregated packets and process them one by one */
-void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff,
- int packet_len, struct batman_if *if_incoming)
-{
- struct batman_packet *batman_packet;
- int buff_pos = 0;
- unsigned char *hna_buff;
-
- batman_packet = (struct batman_packet *)packet_buff;
-
- do {
- /* network to host order for our 32bit seqno, and the
- orig_interval. */
- batman_packet->seqno = ntohl(batman_packet->seqno);
-
- hna_buff = packet_buff + buff_pos + BAT_PACKET_LEN;
- receive_bat_packet(ethhdr, batman_packet,
- hna_buff, hna_len(batman_packet),
- if_incoming);
-
- buff_pos += BAT_PACKET_LEN + hna_len(batman_packet);
- batman_packet = (struct batman_packet *)
- (packet_buff + buff_pos);
- } while (aggregated_packet(buff_pos, packet_len,
- batman_packet->num_hna));
-}
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_AGGREGATION_H_
-#define _NET_BATMAN_ADV_AGGREGATION_H_
-
-#include "main.h"
-
-/* is there another aggregated packet here? */
-static inline int aggregated_packet(int buff_pos, int packet_len, int num_hna)
-{
- int next_buff_pos = buff_pos + BAT_PACKET_LEN + (num_hna * ETH_ALEN);
-
- return (next_buff_pos <= packet_len) &&
- (next_buff_pos <= MAX_AGGREGATION_BYTES);
-}
-
-void add_bat_packet_to_list(struct bat_priv *bat_priv,
- unsigned char *packet_buff, int packet_len,
- struct batman_if *if_incoming, char own_packet,
- unsigned long send_time);
-void receive_aggr_bat_packet(struct ethhdr *ethhdr, unsigned char *packet_buff,
- int packet_len, struct batman_if *if_incoming);
-
-#endif /* _NET_BATMAN_ADV_AGGREGATION_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-
-#include <linux/debugfs.h>
-
-#include "bat_debugfs.h"
-#include "translation-table.h"
-#include "originator.h"
-#include "hard-interface.h"
-#include "gateway_common.h"
-#include "gateway_client.h"
-#include "soft-interface.h"
-#include "vis.h"
-#include "icmp_socket.h"
-
-static struct dentry *bat_debugfs;
-
-#ifdef CONFIG_BATMAN_ADV_DEBUG
-#define LOG_BUFF_MASK (log_buff_len-1)
-#define LOG_BUFF(idx) (debug_log->log_buff[(idx) & LOG_BUFF_MASK])
-
-static int log_buff_len = LOG_BUF_LEN;
-
-static void emit_log_char(struct debug_log *debug_log, char c)
-{
- LOG_BUFF(debug_log->log_end) = c;
- debug_log->log_end++;
-
- if (debug_log->log_end - debug_log->log_start > log_buff_len)
- debug_log->log_start = debug_log->log_end - log_buff_len;
-}
-
-static int fdebug_log(struct debug_log *debug_log, char *fmt, ...)
-{
- int printed_len;
- va_list args;
- static char debug_log_buf[256];
- char *p;
-
- if (!debug_log)
- return 0;
-
- spin_lock_bh(&debug_log->lock);
- va_start(args, fmt);
- printed_len = vscnprintf(debug_log_buf, sizeof(debug_log_buf),
- fmt, args);
- va_end(args);
-
- for (p = debug_log_buf; *p != 0; p++)
- emit_log_char(debug_log, *p);
-
- spin_unlock_bh(&debug_log->lock);
-
- wake_up(&debug_log->queue_wait);
-
- return 0;
-}
-
-int debug_log(struct bat_priv *bat_priv, char *fmt, ...)
-{
- va_list args;
- char tmp_log_buf[256];
-
- va_start(args, fmt);
- vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args);
- fdebug_log(bat_priv->debug_log, "[%10u] %s",
- (jiffies / HZ), tmp_log_buf);
- va_end(args);
-
- return 0;
-}
-
-static int log_open(struct inode *inode, struct file *file)
-{
- nonseekable_open(inode, file);
- file->private_data = inode->i_private;
- inc_module_count();
- return 0;
-}
-
-static int log_release(struct inode *inode, struct file *file)
-{
- dec_module_count();
- return 0;
-}
-
-static ssize_t log_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- struct bat_priv *bat_priv = file->private_data;
- struct debug_log *debug_log = bat_priv->debug_log;
- int error, i = 0;
- char c;
-
- if ((file->f_flags & O_NONBLOCK) &&
- !(debug_log->log_end - debug_log->log_start))
- return -EAGAIN;
-
- if ((!buf) || (count < 0))
- return -EINVAL;
-
- if (count == 0)
- return 0;
-
- if (!access_ok(VERIFY_WRITE, buf, count))
- return -EFAULT;
-
- error = wait_event_interruptible(debug_log->queue_wait,
- (debug_log->log_start - debug_log->log_end));
-
- if (error)
- return error;
-
- spin_lock_bh(&debug_log->lock);
-
- while ((!error) && (i < count) &&
- (debug_log->log_start != debug_log->log_end)) {
- c = LOG_BUFF(debug_log->log_start);
-
- debug_log->log_start++;
-
- spin_unlock_bh(&debug_log->lock);
-
- error = __put_user(c, buf);
-
- spin_lock_bh(&debug_log->lock);
-
- buf++;
- i++;
-
- }
-
- spin_unlock_bh(&debug_log->lock);
-
- if (!error)
- return i;
-
- return error;
-}
-
-static unsigned int log_poll(struct file *file, poll_table *wait)
-{
- struct bat_priv *bat_priv = file->private_data;
- struct debug_log *debug_log = bat_priv->debug_log;
-
- poll_wait(file, &debug_log->queue_wait, wait);
-
- if (debug_log->log_end - debug_log->log_start)
- return POLLIN | POLLRDNORM;
-
- return 0;
-}
-
-static const struct file_operations log_fops = {
- .open = log_open,
- .release = log_release,
- .read = log_read,
- .poll = log_poll,
- .llseek = no_llseek,
-};
-
-static int debug_log_setup(struct bat_priv *bat_priv)
-{
- struct dentry *d;
-
- if (!bat_priv->debug_dir)
- goto err;
-
- bat_priv->debug_log = kzalloc(sizeof(struct debug_log), GFP_ATOMIC);
- if (!bat_priv->debug_log)
- goto err;
-
- spin_lock_init(&bat_priv->debug_log->lock);
- init_waitqueue_head(&bat_priv->debug_log->queue_wait);
-
- d = debugfs_create_file("log", S_IFREG | S_IRUSR,
- bat_priv->debug_dir, bat_priv, &log_fops);
- if (d)
- goto err;
-
- return 0;
-
-err:
- return 1;
-}
-
-static void debug_log_cleanup(struct bat_priv *bat_priv)
-{
- kfree(bat_priv->debug_log);
- bat_priv->debug_log = NULL;
-}
-#else /* CONFIG_BATMAN_ADV_DEBUG */
-static int debug_log_setup(struct bat_priv *bat_priv)
-{
- bat_priv->debug_log = NULL;
- return 0;
-}
-
-static void debug_log_cleanup(struct bat_priv *bat_priv)
-{
- return;
-}
-#endif
-
-static int originators_open(struct inode *inode, struct file *file)
-{
- struct net_device *net_dev = (struct net_device *)inode->i_private;
- return single_open(file, orig_seq_print_text, net_dev);
-}
-
-static int gateways_open(struct inode *inode, struct file *file)
-{
- struct net_device *net_dev = (struct net_device *)inode->i_private;
- return single_open(file, gw_client_seq_print_text, net_dev);
-}
-
-static int softif_neigh_open(struct inode *inode, struct file *file)
-{
- struct net_device *net_dev = (struct net_device *)inode->i_private;
- return single_open(file, softif_neigh_seq_print_text, net_dev);
-}
-
-static int transtable_global_open(struct inode *inode, struct file *file)
-{
- struct net_device *net_dev = (struct net_device *)inode->i_private;
- return single_open(file, hna_global_seq_print_text, net_dev);
-}
-
-static int transtable_local_open(struct inode *inode, struct file *file)
-{
- struct net_device *net_dev = (struct net_device *)inode->i_private;
- return single_open(file, hna_local_seq_print_text, net_dev);
-}
-
-static int vis_data_open(struct inode *inode, struct file *file)
-{
- struct net_device *net_dev = (struct net_device *)inode->i_private;
- return single_open(file, vis_seq_print_text, net_dev);
-}
-
-struct bat_debuginfo {
- struct attribute attr;
- const struct file_operations fops;
-};
-
-#define BAT_DEBUGINFO(_name, _mode, _open) \
-struct bat_debuginfo bat_debuginfo_##_name = { \
- .attr = { .name = __stringify(_name), \
- .mode = _mode, }, \
- .fops = { .owner = THIS_MODULE, \
- .open = _open, \
- .read = seq_read, \
- .llseek = seq_lseek, \
- .release = single_release, \
- } \
-};
-
-static BAT_DEBUGINFO(originators, S_IRUGO, originators_open);
-static BAT_DEBUGINFO(gateways, S_IRUGO, gateways_open);
-static BAT_DEBUGINFO(softif_neigh, S_IRUGO, softif_neigh_open);
-static BAT_DEBUGINFO(transtable_global, S_IRUGO, transtable_global_open);
-static BAT_DEBUGINFO(transtable_local, S_IRUGO, transtable_local_open);
-static BAT_DEBUGINFO(vis_data, S_IRUGO, vis_data_open);
-
-static struct bat_debuginfo *mesh_debuginfos[] = {
- &bat_debuginfo_originators,
- &bat_debuginfo_gateways,
- &bat_debuginfo_softif_neigh,
- &bat_debuginfo_transtable_global,
- &bat_debuginfo_transtable_local,
- &bat_debuginfo_vis_data,
- NULL,
-};
-
-void debugfs_init(void)
-{
- bat_debugfs = debugfs_create_dir(DEBUGFS_BAT_SUBDIR, NULL);
- if (bat_debugfs == ERR_PTR(-ENODEV))
- bat_debugfs = NULL;
-}
-
-void debugfs_destroy(void)
-{
- if (bat_debugfs) {
- debugfs_remove_recursive(bat_debugfs);
- bat_debugfs = NULL;
- }
-}
-
-int debugfs_add_meshif(struct net_device *dev)
-{
- struct bat_priv *bat_priv = netdev_priv(dev);
- struct bat_debuginfo **bat_debug;
- struct dentry *file;
-
- if (!bat_debugfs)
- goto out;
-
- bat_priv->debug_dir = debugfs_create_dir(dev->name, bat_debugfs);
- if (!bat_priv->debug_dir)
- goto out;
-
- bat_socket_setup(bat_priv);
- debug_log_setup(bat_priv);
-
- for (bat_debug = mesh_debuginfos; *bat_debug; ++bat_debug) {
- file = debugfs_create_file(((*bat_debug)->attr).name,
- S_IFREG | ((*bat_debug)->attr).mode,
- bat_priv->debug_dir,
- dev, &(*bat_debug)->fops);
- if (!file) {
- bat_err(dev, "Can't add debugfs file: %s/%s\n",
- dev->name, ((*bat_debug)->attr).name);
- goto rem_attr;
- }
- }
-
- return 0;
-rem_attr:
- debugfs_remove_recursive(bat_priv->debug_dir);
- bat_priv->debug_dir = NULL;
-out:
-#ifdef CONFIG_DEBUG_FS
- return -ENOMEM;
-#else
- return 0;
-#endif /* CONFIG_DEBUG_FS */
-}
-
-void debugfs_del_meshif(struct net_device *dev)
-{
- struct bat_priv *bat_priv = netdev_priv(dev);
-
- debug_log_cleanup(bat_priv);
-
- if (bat_debugfs) {
- debugfs_remove_recursive(bat_priv->debug_dir);
- bat_priv->debug_dir = NULL;
- }
-}
+++ /dev/null
-/*
- * Copyright (C) 2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-
-#ifndef _NET_BATMAN_ADV_DEBUGFS_H_
-#define _NET_BATMAN_ADV_DEBUGFS_H_
-
-#define DEBUGFS_BAT_SUBDIR "batman_adv"
-
-void debugfs_init(void);
-void debugfs_destroy(void);
-int debugfs_add_meshif(struct net_device *dev);
-void debugfs_del_meshif(struct net_device *dev);
-
-#endif /* _NET_BATMAN_ADV_DEBUGFS_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "bat_sysfs.h"
-#include "translation-table.h"
-#include "originator.h"
-#include "hard-interface.h"
-#include "gateway_common.h"
-#include "gateway_client.h"
-#include "vis.h"
-
-#define to_dev(obj) container_of(obj, struct device, kobj)
-#define kobj_to_netdev(obj) to_net_dev(to_dev(obj->parent))
-#define kobj_to_batpriv(obj) netdev_priv(kobj_to_netdev(obj))
-
-/* Use this, if you have customized show and store functions */
-#define BAT_ATTR(_name, _mode, _show, _store) \
-struct bat_attribute bat_attr_##_name = { \
- .attr = {.name = __stringify(_name), \
- .mode = _mode }, \
- .show = _show, \
- .store = _store, \
-};
-
-#define BAT_ATTR_STORE_BOOL(_name, _post_func) \
-ssize_t store_##_name(struct kobject *kobj, struct attribute *attr, \
- char *buff, size_t count) \
-{ \
- struct net_device *net_dev = kobj_to_netdev(kobj); \
- struct bat_priv *bat_priv = netdev_priv(net_dev); \
- return __store_bool_attr(buff, count, _post_func, attr, \
- &bat_priv->_name, net_dev); \
-}
-
-#define BAT_ATTR_SHOW_BOOL(_name) \
-ssize_t show_##_name(struct kobject *kobj, struct attribute *attr, \
- char *buff) \
-{ \
- struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \
- return sprintf(buff, "%s\n", \
- atomic_read(&bat_priv->_name) == 0 ? \
- "disabled" : "enabled"); \
-} \
-
-/* Use this, if you are going to turn a [name] in bat_priv on or off */
-#define BAT_ATTR_BOOL(_name, _mode, _post_func) \
- static BAT_ATTR_STORE_BOOL(_name, _post_func) \
- static BAT_ATTR_SHOW_BOOL(_name) \
- static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
-
-
-#define BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \
-ssize_t store_##_name(struct kobject *kobj, struct attribute *attr, \
- char *buff, size_t count) \
-{ \
- struct net_device *net_dev = kobj_to_netdev(kobj); \
- struct bat_priv *bat_priv = netdev_priv(net_dev); \
- return __store_uint_attr(buff, count, _min, _max, _post_func, \
- attr, &bat_priv->_name, net_dev); \
-}
-
-#define BAT_ATTR_SHOW_UINT(_name) \
-ssize_t show_##_name(struct kobject *kobj, struct attribute *attr, \
- char *buff) \
-{ \
- struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \
- return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name)); \
-} \
-
-/* Use this, if you are going to set [name] in bat_priv to unsigned integer
- * values only */
-#define BAT_ATTR_UINT(_name, _mode, _min, _max, _post_func) \
- static BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \
- static BAT_ATTR_SHOW_UINT(_name) \
- static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
-
-
-static int store_bool_attr(char *buff, size_t count,
- struct net_device *net_dev,
- char *attr_name, atomic_t *attr)
-{
- int enabled = -1;
-
- if (buff[count - 1] == '\n')
- buff[count - 1] = '\0';
-
- if ((strncmp(buff, "1", 2) == 0) ||
- (strncmp(buff, "enable", 7) == 0) ||
- (strncmp(buff, "enabled", 8) == 0))
- enabled = 1;
-
- if ((strncmp(buff, "0", 2) == 0) ||
- (strncmp(buff, "disable", 8) == 0) ||
- (strncmp(buff, "disabled", 9) == 0))
- enabled = 0;
-
- if (enabled < 0) {
- bat_info(net_dev,
- "%s: Invalid parameter received: %s\n",
- attr_name, buff);
- return -EINVAL;
- }
-
- if (atomic_read(attr) == enabled)
- return count;
-
- bat_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
- atomic_read(attr) == 1 ? "enabled" : "disabled",
- enabled == 1 ? "enabled" : "disabled");
-
- atomic_set(attr, (unsigned)enabled);
- return count;
-}
-
-static inline ssize_t __store_bool_attr(char *buff, size_t count,
- void (*post_func)(struct net_device *),
- struct attribute *attr,
- atomic_t *attr_store, struct net_device *net_dev)
-{
- int ret;
-
- ret = store_bool_attr(buff, count, net_dev, (char *)attr->name,
- attr_store);
- if (post_func && ret)
- post_func(net_dev);
-
- return ret;
-}
-
-static int store_uint_attr(char *buff, size_t count,
- struct net_device *net_dev, char *attr_name,
- unsigned int min, unsigned int max, atomic_t *attr)
-{
- unsigned long uint_val;
- int ret;
-
- ret = strict_strtoul(buff, 10, &uint_val);
- if (ret) {
- bat_info(net_dev,
- "%s: Invalid parameter received: %s\n",
- attr_name, buff);
- return -EINVAL;
- }
-
- if (uint_val < min) {
- bat_info(net_dev, "%s: Value is too small: %lu min: %u\n",
- attr_name, uint_val, min);
- return -EINVAL;
- }
-
- if (uint_val > max) {
- bat_info(net_dev, "%s: Value is too big: %lu max: %u\n",
- attr_name, uint_val, max);
- return -EINVAL;
- }
-
- if (atomic_read(attr) == uint_val)
- return count;
-
- bat_info(net_dev, "%s: Changing from: %i to: %lu\n",
- attr_name, atomic_read(attr), uint_val);
-
- atomic_set(attr, uint_val);
- return count;
-}
-
-static inline ssize_t __store_uint_attr(char *buff, size_t count,
- int min, int max,
- void (*post_func)(struct net_device *),
- struct attribute *attr,
- atomic_t *attr_store, struct net_device *net_dev)
-{
- int ret;
-
- ret = store_uint_attr(buff, count, net_dev, (char *)attr->name,
- min, max, attr_store);
- if (post_func && ret)
- post_func(net_dev);
-
- return ret;
-}
-
-static ssize_t show_vis_mode(struct kobject *kobj, struct attribute *attr,
- char *buff)
-{
- struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
- int vis_mode = atomic_read(&bat_priv->vis_mode);
-
- return sprintf(buff, "%s\n",
- vis_mode == VIS_TYPE_CLIENT_UPDATE ?
- "client" : "server");
-}
-
-static ssize_t store_vis_mode(struct kobject *kobj, struct attribute *attr,
- char *buff, size_t count)
-{
- struct net_device *net_dev = kobj_to_netdev(kobj);
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- unsigned long val;
- int ret, vis_mode_tmp = -1;
-
- ret = strict_strtoul(buff, 10, &val);
-
- if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) ||
- (strncmp(buff, "client", 6) == 0) ||
- (strncmp(buff, "off", 3) == 0))
- vis_mode_tmp = VIS_TYPE_CLIENT_UPDATE;
-
- if (((count == 2) && (!ret) && (val == VIS_TYPE_SERVER_SYNC)) ||
- (strncmp(buff, "server", 6) == 0))
- vis_mode_tmp = VIS_TYPE_SERVER_SYNC;
-
- if (vis_mode_tmp < 0) {
- if (buff[count - 1] == '\n')
- buff[count - 1] = '\0';
-
- bat_info(net_dev,
- "Invalid parameter for 'vis mode' setting received: "
- "%s\n", buff);
- return -EINVAL;
- }
-
- if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp)
- return count;
-
- bat_info(net_dev, "Changing vis mode from: %s to: %s\n",
- atomic_read(&bat_priv->vis_mode) == VIS_TYPE_CLIENT_UPDATE ?
- "client" : "server", vis_mode_tmp == VIS_TYPE_CLIENT_UPDATE ?
- "client" : "server");
-
- atomic_set(&bat_priv->vis_mode, (unsigned)vis_mode_tmp);
- return count;
-}
-
-static void post_gw_deselect(struct net_device *net_dev)
-{
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- gw_deselect(bat_priv);
-}
-
-static ssize_t show_gw_mode(struct kobject *kobj, struct attribute *attr,
- char *buff)
-{
- struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
- int bytes_written;
-
- switch (atomic_read(&bat_priv->gw_mode)) {
- case GW_MODE_CLIENT:
- bytes_written = sprintf(buff, "%s\n", GW_MODE_CLIENT_NAME);
- break;
- case GW_MODE_SERVER:
- bytes_written = sprintf(buff, "%s\n", GW_MODE_SERVER_NAME);
- break;
- default:
- bytes_written = sprintf(buff, "%s\n", GW_MODE_OFF_NAME);
- break;
- }
-
- return bytes_written;
-}
-
-static ssize_t store_gw_mode(struct kobject *kobj, struct attribute *attr,
- char *buff, size_t count)
-{
- struct net_device *net_dev = kobj_to_netdev(kobj);
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- char *curr_gw_mode_str;
- int gw_mode_tmp = -1;
-
- if (buff[count - 1] == '\n')
- buff[count - 1] = '\0';
-
- if (strncmp(buff, GW_MODE_OFF_NAME, strlen(GW_MODE_OFF_NAME)) == 0)
- gw_mode_tmp = GW_MODE_OFF;
-
- if (strncmp(buff, GW_MODE_CLIENT_NAME,
- strlen(GW_MODE_CLIENT_NAME)) == 0)
- gw_mode_tmp = GW_MODE_CLIENT;
-
- if (strncmp(buff, GW_MODE_SERVER_NAME,
- strlen(GW_MODE_SERVER_NAME)) == 0)
- gw_mode_tmp = GW_MODE_SERVER;
-
- if (gw_mode_tmp < 0) {
- bat_info(net_dev,
- "Invalid parameter for 'gw mode' setting received: "
- "%s\n", buff);
- return -EINVAL;
- }
-
- if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
- return count;
-
- switch (atomic_read(&bat_priv->gw_mode)) {
- case GW_MODE_CLIENT:
- curr_gw_mode_str = GW_MODE_CLIENT_NAME;
- break;
- case GW_MODE_SERVER:
- curr_gw_mode_str = GW_MODE_SERVER_NAME;
- break;
- default:
- curr_gw_mode_str = GW_MODE_OFF_NAME;
- break;
- }
-
- bat_info(net_dev, "Changing gw mode from: %s to: %s\n",
- curr_gw_mode_str, buff);
-
- gw_deselect(bat_priv);
- atomic_set(&bat_priv->gw_mode, (unsigned)gw_mode_tmp);
- return count;
-}
-
-static ssize_t show_gw_bwidth(struct kobject *kobj, struct attribute *attr,
- char *buff)
-{
- struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
- int down, up;
- int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth);
-
- gw_bandwidth_to_kbit(gw_bandwidth, &down, &up);
- return sprintf(buff, "%i%s/%i%s\n",
- (down > 2048 ? down / 1024 : down),
- (down > 2048 ? "MBit" : "KBit"),
- (up > 2048 ? up / 1024 : up),
- (up > 2048 ? "MBit" : "KBit"));
-}
-
-static ssize_t store_gw_bwidth(struct kobject *kobj, struct attribute *attr,
- char *buff, size_t count)
-{
- struct net_device *net_dev = kobj_to_netdev(kobj);
-
- if (buff[count - 1] == '\n')
- buff[count - 1] = '\0';
-
- return gw_bandwidth_set(net_dev, buff, count);
-}
-
-BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
-BAT_ATTR_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
-BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu);
-static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode);
-static BAT_ATTR(gw_mode, S_IRUGO | S_IWUSR, show_gw_mode, store_gw_mode);
-BAT_ATTR_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * JITTER, INT_MAX, NULL);
-BAT_ATTR_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, TQ_MAX_VALUE, NULL);
-BAT_ATTR_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, TQ_MAX_VALUE,
- post_gw_deselect);
-static BAT_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, show_gw_bwidth,
- store_gw_bwidth);
-#ifdef CONFIG_BATMAN_ADV_DEBUG
-BAT_ATTR_UINT(log_level, S_IRUGO | S_IWUSR, 0, 3, NULL);
-#endif
-
-static struct bat_attribute *mesh_attrs[] = {
- &bat_attr_aggregated_ogms,
- &bat_attr_bonding,
- &bat_attr_fragmentation,
- &bat_attr_vis_mode,
- &bat_attr_gw_mode,
- &bat_attr_orig_interval,
- &bat_attr_hop_penalty,
- &bat_attr_gw_sel_class,
- &bat_attr_gw_bandwidth,
-#ifdef CONFIG_BATMAN_ADV_DEBUG
- &bat_attr_log_level,
-#endif
- NULL,
-};
-
-int sysfs_add_meshif(struct net_device *dev)
-{
- struct kobject *batif_kobject = &dev->dev.kobj;
- struct bat_priv *bat_priv = netdev_priv(dev);
- struct bat_attribute **bat_attr;
- int err;
-
- bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR,
- batif_kobject);
- if (!bat_priv->mesh_obj) {
- bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
- SYSFS_IF_MESH_SUBDIR);
- goto out;
- }
-
- for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) {
- err = sysfs_create_file(bat_priv->mesh_obj,
- &((*bat_attr)->attr));
- if (err) {
- bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
- dev->name, SYSFS_IF_MESH_SUBDIR,
- ((*bat_attr)->attr).name);
- goto rem_attr;
- }
- }
-
- return 0;
-
-rem_attr:
- for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
- sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
-
- kobject_put(bat_priv->mesh_obj);
- bat_priv->mesh_obj = NULL;
-out:
- return -ENOMEM;
-}
-
-void sysfs_del_meshif(struct net_device *dev)
-{
- struct bat_priv *bat_priv = netdev_priv(dev);
- struct bat_attribute **bat_attr;
-
- for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
- sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
-
- kobject_put(bat_priv->mesh_obj);
- bat_priv->mesh_obj = NULL;
-}
-
-static ssize_t show_mesh_iface(struct kobject *kobj, struct attribute *attr,
- char *buff)
-{
- struct net_device *net_dev = kobj_to_netdev(kobj);
- struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
- ssize_t length;
-
- if (!batman_if)
- return 0;
-
- length = sprintf(buff, "%s\n", batman_if->if_status == IF_NOT_IN_USE ?
- "none" : batman_if->soft_iface->name);
-
- kref_put(&batman_if->refcount, hardif_free_ref);
-
- return length;
-}
-
-static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr,
- char *buff, size_t count)
-{
- struct net_device *net_dev = kobj_to_netdev(kobj);
- struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
- int status_tmp = -1;
- int ret;
-
- if (!batman_if)
- return count;
-
- if (buff[count - 1] == '\n')
- buff[count - 1] = '\0';
-
- if (strlen(buff) >= IFNAMSIZ) {
- pr_err("Invalid parameter for 'mesh_iface' setting received: "
- "interface name too long '%s'\n", buff);
- kref_put(&batman_if->refcount, hardif_free_ref);
- return -EINVAL;
- }
-
- if (strncmp(buff, "none", 4) == 0)
- status_tmp = IF_NOT_IN_USE;
- else
- status_tmp = IF_I_WANT_YOU;
-
- if ((batman_if->if_status == status_tmp) || ((batman_if->soft_iface) &&
- (strncmp(batman_if->soft_iface->name, buff, IFNAMSIZ) == 0))) {
- kref_put(&batman_if->refcount, hardif_free_ref);
- return count;
- }
-
- if (status_tmp == IF_NOT_IN_USE) {
- rtnl_lock();
- hardif_disable_interface(batman_if);
- rtnl_unlock();
- kref_put(&batman_if->refcount, hardif_free_ref);
- return count;
- }
-
- /* if the interface already is in use */
- if (batman_if->if_status != IF_NOT_IN_USE) {
- rtnl_lock();
- hardif_disable_interface(batman_if);
- rtnl_unlock();
- }
-
- ret = hardif_enable_interface(batman_if, buff);
- kref_put(&batman_if->refcount, hardif_free_ref);
-
- return ret;
-}
-
-static ssize_t show_iface_status(struct kobject *kobj, struct attribute *attr,
- char *buff)
-{
- struct net_device *net_dev = kobj_to_netdev(kobj);
- struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
- ssize_t length;
-
- if (!batman_if)
- return 0;
-
- switch (batman_if->if_status) {
- case IF_TO_BE_REMOVED:
- length = sprintf(buff, "disabling\n");
- break;
- case IF_INACTIVE:
- length = sprintf(buff, "inactive\n");
- break;
- case IF_ACTIVE:
- length = sprintf(buff, "active\n");
- break;
- case IF_TO_BE_ACTIVATED:
- length = sprintf(buff, "enabling\n");
- break;
- case IF_NOT_IN_USE:
- default:
- length = sprintf(buff, "not in use\n");
- break;
- }
-
- kref_put(&batman_if->refcount, hardif_free_ref);
-
- return length;
-}
-
-static BAT_ATTR(mesh_iface, S_IRUGO | S_IWUSR,
- show_mesh_iface, store_mesh_iface);
-static BAT_ATTR(iface_status, S_IRUGO, show_iface_status, NULL);
-
-static struct bat_attribute *batman_attrs[] = {
- &bat_attr_mesh_iface,
- &bat_attr_iface_status,
- NULL,
-};
-
-int sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev)
-{
- struct kobject *hardif_kobject = &dev->dev.kobj;
- struct bat_attribute **bat_attr;
- int err;
-
- *hardif_obj = kobject_create_and_add(SYSFS_IF_BAT_SUBDIR,
- hardif_kobject);
-
- if (!*hardif_obj) {
- bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
- SYSFS_IF_BAT_SUBDIR);
- goto out;
- }
-
- for (bat_attr = batman_attrs; *bat_attr; ++bat_attr) {
- err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr));
- if (err) {
- bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
- dev->name, SYSFS_IF_BAT_SUBDIR,
- ((*bat_attr)->attr).name);
- goto rem_attr;
- }
- }
-
- return 0;
-
-rem_attr:
- for (bat_attr = batman_attrs; *bat_attr; ++bat_attr)
- sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr));
-out:
- return -ENOMEM;
-}
-
-void sysfs_del_hardif(struct kobject **hardif_obj)
-{
- kobject_put(*hardif_obj);
- *hardif_obj = NULL;
-}
+++ /dev/null
-/*
- * Copyright (C) 2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-
-#ifndef _NET_BATMAN_ADV_SYSFS_H_
-#define _NET_BATMAN_ADV_SYSFS_H_
-
-#define SYSFS_IF_MESH_SUBDIR "mesh"
-#define SYSFS_IF_BAT_SUBDIR "batman_adv"
-
-struct bat_attribute {
- struct attribute attr;
- ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
- char *buf);
- ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
- char *buf, size_t count);
-};
-
-int sysfs_add_meshif(struct net_device *dev);
-void sysfs_del_meshif(struct net_device *dev);
-int sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev);
-void sysfs_del_hardif(struct kobject **hardif_obj);
-
-#endif /* _NET_BATMAN_ADV_SYSFS_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
- *
- * Simon Wunderlich, Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "bitarray.h"
-
-#include <linux/bitops.h>
-
-/* returns true if the corresponding bit in the given seq_bits indicates true
- * and curr_seqno is within range of last_seqno */
-uint8_t get_bit_status(TYPE_OF_WORD *seq_bits, uint32_t last_seqno,
- uint32_t curr_seqno)
-{
- int32_t diff, word_offset, word_num;
-
- diff = last_seqno - curr_seqno;
- if (diff < 0 || diff >= TQ_LOCAL_WINDOW_SIZE) {
- return 0;
- } else {
- /* which word */
- word_num = (last_seqno - curr_seqno) / WORD_BIT_SIZE;
- /* which position in the selected word */
- word_offset = (last_seqno - curr_seqno) % WORD_BIT_SIZE;
-
- if (seq_bits[word_num] & 1 << word_offset)
- return 1;
- else
- return 0;
- }
-}
-
-/* turn corresponding bit on, so we can remember that we got the packet */
-void bit_mark(TYPE_OF_WORD *seq_bits, int32_t n)
-{
- int32_t word_offset, word_num;
-
- /* if too old, just drop it */
- if (n < 0 || n >= TQ_LOCAL_WINDOW_SIZE)
- return;
-
- /* which word */
- word_num = n / WORD_BIT_SIZE;
- /* which position in the selected word */
- word_offset = n % WORD_BIT_SIZE;
-
- seq_bits[word_num] |= 1 << word_offset; /* turn the position on */
-}
-
-/* shift the packet array by n places. */
-static void bit_shift(TYPE_OF_WORD *seq_bits, int32_t n)
-{
- int32_t word_offset, word_num;
- int32_t i;
-
- if (n <= 0 || n >= TQ_LOCAL_WINDOW_SIZE)
- return;
-
- word_offset = n % WORD_BIT_SIZE;/* shift how much inside each word */
- word_num = n / WORD_BIT_SIZE; /* shift over how much (full) words */
-
- for (i = NUM_WORDS - 1; i > word_num; i--) {
- /* going from old to new, so we don't overwrite the data we copy
- * from.
- *
- * left is high, right is low: FEDC BA98 7654 3210
- * ^^ ^^
- * vvvv
- * ^^^^ = from, vvvvv =to, we'd have word_num==1 and
- * word_offset==WORD_BIT_SIZE/2 ????? in this example.
- * (=24 bits)
- *
- * our desired output would be: 9876 5432 1000 0000
- * */
-
- seq_bits[i] =
- (seq_bits[i - word_num] << word_offset) +
- /* take the lower port from the left half, shift it left
- * to its final position */
- (seq_bits[i - word_num - 1] >>
- (WORD_BIT_SIZE-word_offset));
- /* and the upper part of the right half and shift it left to
- * it's position */
- /* for our example that would be: word[0] = 9800 + 0076 =
- * 9876 */
- }
- /* now for our last word, i==word_num, we only have the it's "left"
- * half. that's the 1000 word in our example.*/
-
- seq_bits[i] = (seq_bits[i - word_num] << word_offset);
-
- /* pad the rest with 0, if there is anything */
- i--;
-
- for (; i >= 0; i--)
- seq_bits[i] = 0;
-}
-
-static void bit_reset_window(TYPE_OF_WORD *seq_bits)
-{
- int i;
- for (i = 0; i < NUM_WORDS; i++)
- seq_bits[i] = 0;
-}
-
-
-/* receive and process one packet within the sequence number window.
- *
- * returns:
- * 1 if the window was moved (either new or very old)
- * 0 if the window was not moved/shifted.
- */
-char bit_get_packet(void *priv, TYPE_OF_WORD *seq_bits,
- int32_t seq_num_diff, int8_t set_mark)
-{
- struct bat_priv *bat_priv = (struct bat_priv *)priv;
-
- /* sequence number is slightly older. We already got a sequence number
- * higher than this one, so we just mark it. */
-
- if ((seq_num_diff <= 0) && (seq_num_diff > -TQ_LOCAL_WINDOW_SIZE)) {
- if (set_mark)
- bit_mark(seq_bits, -seq_num_diff);
- return 0;
- }
-
- /* sequence number is slightly newer, so we shift the window and
- * set the mark if required */
-
- if ((seq_num_diff > 0) && (seq_num_diff < TQ_LOCAL_WINDOW_SIZE)) {
- bit_shift(seq_bits, seq_num_diff);
-
- if (set_mark)
- bit_mark(seq_bits, 0);
- return 1;
- }
-
- /* sequence number is much newer, probably missed a lot of packets */
-
- if ((seq_num_diff >= TQ_LOCAL_WINDOW_SIZE)
- || (seq_num_diff < EXPECTED_SEQNO_RANGE)) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "We missed a lot of packets (%i) !\n",
- seq_num_diff - 1);
- bit_reset_window(seq_bits);
- if (set_mark)
- bit_mark(seq_bits, 0);
- return 1;
- }
-
- /* received a much older packet. The other host either restarted
- * or the old packet got delayed somewhere in the network. The
- * packet should be dropped without calling this function if the
- * seqno window is protected. */
-
- if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE)
- || (seq_num_diff >= EXPECTED_SEQNO_RANGE)) {
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Other host probably restarted!\n");
-
- bit_reset_window(seq_bits);
- if (set_mark)
- bit_mark(seq_bits, 0);
-
- return 1;
- }
-
- /* never reached */
- return 0;
-}
-
-/* count the hamming weight, how many good packets did we receive? just count
- * the 1's.
- */
-int bit_packet_count(TYPE_OF_WORD *seq_bits)
-{
- int i, hamming = 0;
-
- for (i = 0; i < NUM_WORDS; i++)
- hamming += hweight_long(seq_bits[i]);
-
- return hamming;
-}
+++ /dev/null
-/*
- * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
- *
- * Simon Wunderlich, Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_BITARRAY_H_
-#define _NET_BATMAN_ADV_BITARRAY_H_
-
-/* you should choose something big, if you don't want to waste cpu
- * and keep the type in sync with bit_packet_count */
-#define TYPE_OF_WORD unsigned long
-#define WORD_BIT_SIZE (sizeof(TYPE_OF_WORD) * 8)
-
-/* returns true if the corresponding bit in the given seq_bits indicates true
- * and curr_seqno is within range of last_seqno */
-uint8_t get_bit_status(TYPE_OF_WORD *seq_bits, uint32_t last_seqno,
- uint32_t curr_seqno);
-
-/* turn corresponding bit on, so we can remember that we got the packet */
-void bit_mark(TYPE_OF_WORD *seq_bits, int32_t n);
-
-
-/* receive and process one packet, returns 1 if received seq_num is considered
- * new, 0 if old */
-char bit_get_packet(void *priv, TYPE_OF_WORD *seq_bits,
- int32_t seq_num_diff, int8_t set_mark);
-
-/* count the hamming weight, how many good packets did we receive? */
-int bit_packet_count(TYPE_OF_WORD *seq_bits);
-
-#endif /* _NET_BATMAN_ADV_BITARRAY_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "gateway_client.h"
-#include "gateway_common.h"
-#include "hard-interface.h"
-#include <linux/ip.h>
-#include <linux/ipv6.h>
-#include <linux/udp.h>
-#include <linux/if_vlan.h>
-
-static void gw_node_free_ref(struct kref *refcount)
-{
- struct gw_node *gw_node;
-
- gw_node = container_of(refcount, struct gw_node, refcount);
- kfree(gw_node);
-}
-
-static void gw_node_free_rcu(struct rcu_head *rcu)
-{
- struct gw_node *gw_node;
-
- gw_node = container_of(rcu, struct gw_node, rcu);
- kref_put(&gw_node->refcount, gw_node_free_ref);
-}
-
-void *gw_get_selected(struct bat_priv *bat_priv)
-{
- struct gw_node *curr_gateway_tmp = bat_priv->curr_gw;
-
- if (!curr_gateway_tmp)
- return NULL;
-
- return curr_gateway_tmp->orig_node;
-}
-
-void gw_deselect(struct bat_priv *bat_priv)
-{
- struct gw_node *gw_node = bat_priv->curr_gw;
-
- bat_priv->curr_gw = NULL;
-
- if (gw_node)
- kref_put(&gw_node->refcount, gw_node_free_ref);
-}
-
-static struct gw_node *gw_select(struct bat_priv *bat_priv,
- struct gw_node *new_gw_node)
-{
- struct gw_node *curr_gw_node = bat_priv->curr_gw;
-
- if (new_gw_node)
- kref_get(&new_gw_node->refcount);
-
- bat_priv->curr_gw = new_gw_node;
- return curr_gw_node;
-}
-
-void gw_election(struct bat_priv *bat_priv)
-{
- struct hlist_node *node;
- struct gw_node *gw_node, *curr_gw_tmp = NULL, *old_gw_node = NULL;
- uint8_t max_tq = 0;
- uint32_t max_gw_factor = 0, tmp_gw_factor = 0;
- int down, up;
-
- /**
- * The batman daemon checks here if we already passed a full originator
- * cycle in order to make sure we don't choose the first gateway we
- * hear about. This check is based on the daemon's uptime which we
- * don't have.
- **/
- if (atomic_read(&bat_priv->gw_mode) != GW_MODE_CLIENT)
- return;
-
- if (bat_priv->curr_gw)
- return;
-
- rcu_read_lock();
- if (hlist_empty(&bat_priv->gw_list)) {
- rcu_read_unlock();
-
- if (bat_priv->curr_gw) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Removing selected gateway - "
- "no gateway in range\n");
- gw_deselect(bat_priv);
- }
-
- return;
- }
-
- hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
- if (!gw_node->orig_node->router)
- continue;
-
- if (gw_node->deleted)
- continue;
-
- switch (atomic_read(&bat_priv->gw_sel_class)) {
- case 1: /* fast connection */
- gw_bandwidth_to_kbit(gw_node->orig_node->gw_flags,
- &down, &up);
-
- tmp_gw_factor = (gw_node->orig_node->router->tq_avg *
- gw_node->orig_node->router->tq_avg *
- down * 100 * 100) /
- (TQ_LOCAL_WINDOW_SIZE *
- TQ_LOCAL_WINDOW_SIZE * 64);
-
- if ((tmp_gw_factor > max_gw_factor) ||
- ((tmp_gw_factor == max_gw_factor) &&
- (gw_node->orig_node->router->tq_avg > max_tq)))
- curr_gw_tmp = gw_node;
- break;
-
- default: /**
- * 2: stable connection (use best statistic)
- * 3: fast-switch (use best statistic but change as
- * soon as a better gateway appears)
- * XX: late-switch (use best statistic but change as
- * soon as a better gateway appears which has
- * $routing_class more tq points)
- **/
- if (gw_node->orig_node->router->tq_avg > max_tq)
- curr_gw_tmp = gw_node;
- break;
- }
-
- if (gw_node->orig_node->router->tq_avg > max_tq)
- max_tq = gw_node->orig_node->router->tq_avg;
-
- if (tmp_gw_factor > max_gw_factor)
- max_gw_factor = tmp_gw_factor;
- }
-
- if (bat_priv->curr_gw != curr_gw_tmp) {
- if ((bat_priv->curr_gw) && (!curr_gw_tmp))
- bat_dbg(DBG_BATMAN, bat_priv,
- "Removing selected gateway - "
- "no gateway in range\n");
- else if ((!bat_priv->curr_gw) && (curr_gw_tmp))
- bat_dbg(DBG_BATMAN, bat_priv,
- "Adding route to gateway %pM "
- "(gw_flags: %i, tq: %i)\n",
- curr_gw_tmp->orig_node->orig,
- curr_gw_tmp->orig_node->gw_flags,
- curr_gw_tmp->orig_node->router->tq_avg);
- else
- bat_dbg(DBG_BATMAN, bat_priv,
- "Changing route to gateway %pM "
- "(gw_flags: %i, tq: %i)\n",
- curr_gw_tmp->orig_node->orig,
- curr_gw_tmp->orig_node->gw_flags,
- curr_gw_tmp->orig_node->router->tq_avg);
-
- old_gw_node = gw_select(bat_priv, curr_gw_tmp);
- }
-
- rcu_read_unlock();
-
- /* the kfree() has to be outside of the rcu lock */
- if (old_gw_node)
- kref_put(&old_gw_node->refcount, gw_node_free_ref);
-}
-
-void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node)
-{
- struct gw_node *curr_gateway_tmp = bat_priv->curr_gw;
- uint8_t gw_tq_avg, orig_tq_avg;
-
- if (!curr_gateway_tmp)
- return;
-
- if (!curr_gateway_tmp->orig_node)
- goto deselect;
-
- if (!curr_gateway_tmp->orig_node->router)
- goto deselect;
-
- /* this node already is the gateway */
- if (curr_gateway_tmp->orig_node == orig_node)
- return;
-
- if (!orig_node->router)
- return;
-
- gw_tq_avg = curr_gateway_tmp->orig_node->router->tq_avg;
- orig_tq_avg = orig_node->router->tq_avg;
-
- /* the TQ value has to be better */
- if (orig_tq_avg < gw_tq_avg)
- return;
-
- /**
- * if the routing class is greater than 3 the value tells us how much
- * greater the TQ value of the new gateway must be
- **/
- if ((atomic_read(&bat_priv->gw_sel_class) > 3) &&
- (orig_tq_avg - gw_tq_avg < atomic_read(&bat_priv->gw_sel_class)))
- return;
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Restarting gateway selection: better gateway found (tq curr: "
- "%i, tq new: %i)\n",
- gw_tq_avg, orig_tq_avg);
-
-deselect:
- gw_deselect(bat_priv);
-}
-
-static void gw_node_add(struct bat_priv *bat_priv,
- struct orig_node *orig_node, uint8_t new_gwflags)
-{
- struct gw_node *gw_node;
- int down, up;
-
- gw_node = kmalloc(sizeof(struct gw_node), GFP_ATOMIC);
- if (!gw_node)
- return;
-
- memset(gw_node, 0, sizeof(struct gw_node));
- INIT_HLIST_NODE(&gw_node->list);
- gw_node->orig_node = orig_node;
- kref_init(&gw_node->refcount);
-
- spin_lock_bh(&bat_priv->gw_list_lock);
- hlist_add_head_rcu(&gw_node->list, &bat_priv->gw_list);
- spin_unlock_bh(&bat_priv->gw_list_lock);
-
- gw_bandwidth_to_kbit(new_gwflags, &down, &up);
- bat_dbg(DBG_BATMAN, bat_priv,
- "Found new gateway %pM -> gw_class: %i - %i%s/%i%s\n",
- orig_node->orig, new_gwflags,
- (down > 2048 ? down / 1024 : down),
- (down > 2048 ? "MBit" : "KBit"),
- (up > 2048 ? up / 1024 : up),
- (up > 2048 ? "MBit" : "KBit"));
-}
-
-void gw_node_update(struct bat_priv *bat_priv,
- struct orig_node *orig_node, uint8_t new_gwflags)
-{
- struct hlist_node *node;
- struct gw_node *gw_node;
-
- rcu_read_lock();
- hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
- if (gw_node->orig_node != orig_node)
- continue;
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Gateway class of originator %pM changed from "
- "%i to %i\n",
- orig_node->orig, gw_node->orig_node->gw_flags,
- new_gwflags);
-
- gw_node->deleted = 0;
-
- if (new_gwflags == 0) {
- gw_node->deleted = jiffies;
- bat_dbg(DBG_BATMAN, bat_priv,
- "Gateway %pM removed from gateway list\n",
- orig_node->orig);
-
- if (gw_node == bat_priv->curr_gw) {
- rcu_read_unlock();
- gw_deselect(bat_priv);
- return;
- }
- }
-
- rcu_read_unlock();
- return;
- }
- rcu_read_unlock();
-
- if (new_gwflags == 0)
- return;
-
- gw_node_add(bat_priv, orig_node, new_gwflags);
-}
-
-void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node)
-{
- return gw_node_update(bat_priv, orig_node, 0);
-}
-
-void gw_node_purge(struct bat_priv *bat_priv)
-{
- struct gw_node *gw_node;
- struct hlist_node *node, *node_tmp;
- unsigned long timeout = 2 * PURGE_TIMEOUT * HZ;
-
- spin_lock_bh(&bat_priv->gw_list_lock);
-
- hlist_for_each_entry_safe(gw_node, node, node_tmp,
- &bat_priv->gw_list, list) {
- if (((!gw_node->deleted) ||
- (time_before(jiffies, gw_node->deleted + timeout))) &&
- atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE)
- continue;
-
- if (bat_priv->curr_gw == gw_node)
- gw_deselect(bat_priv);
-
- hlist_del_rcu(&gw_node->list);
- call_rcu(&gw_node->rcu, gw_node_free_rcu);
- }
-
-
- spin_unlock_bh(&bat_priv->gw_list_lock);
-}
-
-static int _write_buffer_text(struct bat_priv *bat_priv,
- struct seq_file *seq, struct gw_node *gw_node)
-{
- int down, up;
-
- gw_bandwidth_to_kbit(gw_node->orig_node->gw_flags, &down, &up);
-
- return seq_printf(seq, "%s %pM (%3i) %pM [%10s]: %3i - %i%s/%i%s\n",
- (bat_priv->curr_gw == gw_node ? "=>" : " "),
- gw_node->orig_node->orig,
- gw_node->orig_node->router->tq_avg,
- gw_node->orig_node->router->addr,
- gw_node->orig_node->router->if_incoming->net_dev->name,
- gw_node->orig_node->gw_flags,
- (down > 2048 ? down / 1024 : down),
- (down > 2048 ? "MBit" : "KBit"),
- (up > 2048 ? up / 1024 : up),
- (up > 2048 ? "MBit" : "KBit"));
-}
-
-int gw_client_seq_print_text(struct seq_file *seq, void *offset)
-{
- struct net_device *net_dev = (struct net_device *)seq->private;
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- struct gw_node *gw_node;
- struct hlist_node *node;
- int gw_count = 0;
-
- if (!bat_priv->primary_if) {
-
- return seq_printf(seq, "BATMAN mesh %s disabled - please "
- "specify interfaces to enable it\n",
- net_dev->name);
- }
-
- if (bat_priv->primary_if->if_status != IF_ACTIVE) {
-
- return seq_printf(seq, "BATMAN mesh %s disabled - "
- "primary interface not active\n",
- net_dev->name);
- }
-
- seq_printf(seq, " %-12s (%s/%i) %17s [%10s]: gw_class ... "
- "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%pM (%s)]\n",
- "Gateway", "#", TQ_MAX_VALUE, "Nexthop",
- "outgoingIF", SOURCE_VERSION, REVISION_VERSION_STR,
- bat_priv->primary_if->net_dev->name,
- bat_priv->primary_if->net_dev->dev_addr, net_dev->name);
-
- rcu_read_lock();
- hlist_for_each_entry_rcu(gw_node, node, &bat_priv->gw_list, list) {
- if (gw_node->deleted)
- continue;
-
- if (!gw_node->orig_node->router)
- continue;
-
- _write_buffer_text(bat_priv, seq, gw_node);
- gw_count++;
- }
- rcu_read_unlock();
-
- if (gw_count == 0)
- seq_printf(seq, "No gateways in range ...\n");
-
- return 0;
-}
-
-int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb)
-{
- struct ethhdr *ethhdr;
- struct iphdr *iphdr;
- struct ipv6hdr *ipv6hdr;
- struct udphdr *udphdr;
- unsigned int header_len = 0;
-
- if (atomic_read(&bat_priv->gw_mode) == GW_MODE_OFF)
- return 0;
-
- /* check for ethernet header */
- if (!pskb_may_pull(skb, header_len + ETH_HLEN))
- return 0;
- ethhdr = (struct ethhdr *)skb->data;
- header_len += ETH_HLEN;
-
- /* check for initial vlan header */
- if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) {
- if (!pskb_may_pull(skb, header_len + VLAN_HLEN))
- return 0;
- ethhdr = (struct ethhdr *)(skb->data + VLAN_HLEN);
- header_len += VLAN_HLEN;
- }
-
- /* check for ip header */
- switch (ntohs(ethhdr->h_proto)) {
- case ETH_P_IP:
- if (!pskb_may_pull(skb, header_len + sizeof(struct iphdr)))
- return 0;
- iphdr = (struct iphdr *)(skb->data + header_len);
- header_len += iphdr->ihl * 4;
-
- /* check for udp header */
- if (iphdr->protocol != IPPROTO_UDP)
- return 0;
-
- break;
- case ETH_P_IPV6:
- if (!pskb_may_pull(skb, header_len + sizeof(struct ipv6hdr)))
- return 0;
- ipv6hdr = (struct ipv6hdr *)(skb->data + header_len);
- header_len += sizeof(struct ipv6hdr);
-
- /* check for udp header */
- if (ipv6hdr->nexthdr != IPPROTO_UDP)
- return 0;
-
- break;
- default:
- return 0;
- }
-
- if (!pskb_may_pull(skb, header_len + sizeof(struct udphdr)))
- return 0;
- udphdr = (struct udphdr *)(skb->data + header_len);
- header_len += sizeof(struct udphdr);
-
- /* check for bootp port */
- if ((ntohs(ethhdr->h_proto) == ETH_P_IP) &&
- (ntohs(udphdr->dest) != 67))
- return 0;
-
- if ((ntohs(ethhdr->h_proto) == ETH_P_IPV6) &&
- (ntohs(udphdr->dest) != 547))
- return 0;
-
- if (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER)
- return -1;
-
- if (!bat_priv->curr_gw)
- return 0;
-
- return 1;
-}
+++ /dev/null
-/*
- * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
-#define _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
-
-void gw_deselect(struct bat_priv *bat_priv);
-void gw_election(struct bat_priv *bat_priv);
-void *gw_get_selected(struct bat_priv *bat_priv);
-void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node);
-void gw_node_update(struct bat_priv *bat_priv,
- struct orig_node *orig_node, uint8_t new_gwflags);
-void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node);
-void gw_node_purge(struct bat_priv *bat_priv);
-int gw_client_seq_print_text(struct seq_file *seq, void *offset);
-int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb);
-
-#endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "gateway_common.h"
-#include "gateway_client.h"
-
-/* calculates the gateway class from kbit */
-static void kbit_to_gw_bandwidth(int down, int up, long *gw_srv_class)
-{
- int mdown = 0, tdown, tup, difference;
- uint8_t sbit, part;
-
- *gw_srv_class = 0;
- difference = 0x0FFFFFFF;
-
- /* test all downspeeds */
- for (sbit = 0; sbit < 2; sbit++) {
- for (part = 0; part < 16; part++) {
- tdown = 32 * (sbit + 2) * (1 << part);
-
- if (abs(tdown - down) < difference) {
- *gw_srv_class = (sbit << 7) + (part << 3);
- difference = abs(tdown - down);
- mdown = tdown;
- }
- }
- }
-
- /* test all upspeeds */
- difference = 0x0FFFFFFF;
-
- for (part = 0; part < 8; part++) {
- tup = ((part + 1) * (mdown)) / 8;
-
- if (abs(tup - up) < difference) {
- *gw_srv_class = (*gw_srv_class & 0xF8) | part;
- difference = abs(tup - up);
- }
- }
-}
-
-/* returns the up and downspeeds in kbit, calculated from the class */
-void gw_bandwidth_to_kbit(uint8_t gw_srv_class, int *down, int *up)
-{
- char sbit = (gw_srv_class & 0x80) >> 7;
- char dpart = (gw_srv_class & 0x78) >> 3;
- char upart = (gw_srv_class & 0x07);
-
- if (!gw_srv_class) {
- *down = 0;
- *up = 0;
- return;
- }
-
- *down = 32 * (sbit + 2) * (1 << dpart);
- *up = ((upart + 1) * (*down)) / 8;
-}
-
-static bool parse_gw_bandwidth(struct net_device *net_dev, char *buff,
- long *up, long *down)
-{
- int ret, multi = 1;
- char *slash_ptr, *tmp_ptr;
-
- slash_ptr = strchr(buff, '/');
- if (slash_ptr)
- *slash_ptr = 0;
-
- if (strlen(buff) > 4) {
- tmp_ptr = buff + strlen(buff) - 4;
-
- if (strnicmp(tmp_ptr, "mbit", 4) == 0)
- multi = 1024;
-
- if ((strnicmp(tmp_ptr, "kbit", 4) == 0) ||
- (multi > 1))
- *tmp_ptr = '\0';
- }
-
- ret = strict_strtoul(buff, 10, down);
- if (ret) {
- bat_err(net_dev,
- "Download speed of gateway mode invalid: %s\n",
- buff);
- return false;
- }
-
- *down *= multi;
-
- /* we also got some upload info */
- if (slash_ptr) {
- multi = 1;
-
- if (strlen(slash_ptr + 1) > 4) {
- tmp_ptr = slash_ptr + 1 - 4 + strlen(slash_ptr + 1);
-
- if (strnicmp(tmp_ptr, "mbit", 4) == 0)
- multi = 1024;
-
- if ((strnicmp(tmp_ptr, "kbit", 4) == 0) ||
- (multi > 1))
- *tmp_ptr = '\0';
- }
-
- ret = strict_strtoul(slash_ptr + 1, 10, up);
- if (ret) {
- bat_err(net_dev,
- "Upload speed of gateway mode invalid: "
- "%s\n", slash_ptr + 1);
- return false;
- }
-
- *up *= multi;
- }
-
- return true;
-}
-
-ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count)
-{
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- long gw_bandwidth_tmp = 0, up = 0, down = 0;
- bool ret;
-
- ret = parse_gw_bandwidth(net_dev, buff, &up, &down);
- if (!ret)
- goto end;
-
- if ((!down) || (down < 256))
- down = 2000;
-
- if (!up)
- up = down / 5;
-
- kbit_to_gw_bandwidth(down, up, &gw_bandwidth_tmp);
-
- /**
- * the gw bandwidth we guessed above might not match the given
- * speeds, hence we need to calculate it back to show the number
- * that is going to be propagated
- **/
- gw_bandwidth_to_kbit((uint8_t)gw_bandwidth_tmp,
- (int *)&down, (int *)&up);
-
- gw_deselect(bat_priv);
- bat_info(net_dev, "Changing gateway bandwidth from: '%i' to: '%ld' "
- "(propagating: %ld%s/%ld%s)\n",
- atomic_read(&bat_priv->gw_bandwidth), gw_bandwidth_tmp,
- (down > 2048 ? down / 1024 : down),
- (down > 2048 ? "MBit" : "KBit"),
- (up > 2048 ? up / 1024 : up),
- (up > 2048 ? "MBit" : "KBit"));
-
- atomic_set(&bat_priv->gw_bandwidth, gw_bandwidth_tmp);
-
-end:
- return count;
-}
+++ /dev/null
-/*
- * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_GATEWAY_COMMON_H_
-#define _NET_BATMAN_ADV_GATEWAY_COMMON_H_
-
-enum gw_modes {
- GW_MODE_OFF,
- GW_MODE_CLIENT,
- GW_MODE_SERVER,
-};
-
-#define GW_MODE_OFF_NAME "off"
-#define GW_MODE_CLIENT_NAME "client"
-#define GW_MODE_SERVER_NAME "server"
-
-void gw_bandwidth_to_kbit(uint8_t gw_class, int *down, int *up);
-ssize_t gw_bandwidth_set(struct net_device *net_dev, char *buff, size_t count);
-
-#endif /* _NET_BATMAN_ADV_GATEWAY_COMMON_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "hard-interface.h"
-#include "soft-interface.h"
-#include "send.h"
-#include "translation-table.h"
-#include "routing.h"
-#include "bat_sysfs.h"
-#include "originator.h"
-#include "hash.h"
-
-#include <linux/if_arp.h>
-
-/* protect update critical side of if_list - but not the content */
-static DEFINE_SPINLOCK(if_list_lock);
-
-static void hardif_free_rcu(struct rcu_head *rcu)
-{
- struct batman_if *batman_if;
-
- batman_if = container_of(rcu, struct batman_if, rcu);
- dev_put(batman_if->net_dev);
- kref_put(&batman_if->refcount, hardif_free_ref);
-}
-
-struct batman_if *get_batman_if_by_netdev(struct net_device *net_dev)
-{
- struct batman_if *batman_if;
-
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if (batman_if->net_dev == net_dev)
- goto out;
- }
-
- batman_if = NULL;
-
-out:
- if (batman_if)
- kref_get(&batman_if->refcount);
-
- rcu_read_unlock();
- return batman_if;
-}
-
-static int is_valid_iface(struct net_device *net_dev)
-{
- if (net_dev->flags & IFF_LOOPBACK)
- return 0;
-
- if (net_dev->type != ARPHRD_ETHER)
- return 0;
-
- if (net_dev->addr_len != ETH_ALEN)
- return 0;
-
- /* no batman over batman */
-#ifdef HAVE_NET_DEVICE_OPS
- if (net_dev->netdev_ops->ndo_start_xmit == interface_tx)
- return 0;
-#else
- if (net_dev->hard_start_xmit == interface_tx)
- return 0;
-#endif
-
- /* Device is being bridged */
- /* if (net_dev->priv_flags & IFF_BRIDGE_PORT)
- return 0; */
-
- return 1;
-}
-
-static struct batman_if *get_active_batman_if(struct net_device *soft_iface)
-{
- struct batman_if *batman_if;
-
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if (batman_if->soft_iface != soft_iface)
- continue;
-
- if (batman_if->if_status == IF_ACTIVE)
- goto out;
- }
-
- batman_if = NULL;
-
-out:
- if (batman_if)
- kref_get(&batman_if->refcount);
-
- rcu_read_unlock();
- return batman_if;
-}
-
-static void update_primary_addr(struct bat_priv *bat_priv)
-{
- struct vis_packet *vis_packet;
-
- vis_packet = (struct vis_packet *)
- bat_priv->my_vis_info->skb_packet->data;
- memcpy(vis_packet->vis_orig,
- bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
- memcpy(vis_packet->sender_orig,
- bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
-}
-
-static void set_primary_if(struct bat_priv *bat_priv,
- struct batman_if *batman_if)
-{
- struct batman_packet *batman_packet;
- struct batman_if *old_if;
-
- if (batman_if)
- kref_get(&batman_if->refcount);
-
- old_if = bat_priv->primary_if;
- bat_priv->primary_if = batman_if;
-
- if (old_if)
- kref_put(&old_if->refcount, hardif_free_ref);
-
- if (!bat_priv->primary_if)
- return;
-
- batman_packet = (struct batman_packet *)(batman_if->packet_buff);
- batman_packet->flags = PRIMARIES_FIRST_HOP;
- batman_packet->ttl = TTL;
-
- update_primary_addr(bat_priv);
-
- /***
- * hacky trick to make sure that we send the HNA information via
- * our new primary interface
- */
- atomic_set(&bat_priv->hna_local_changed, 1);
-}
-
-static bool hardif_is_iface_up(struct batman_if *batman_if)
-{
- if (batman_if->net_dev->flags & IFF_UP)
- return true;
-
- return false;
-}
-
-static void update_mac_addresses(struct batman_if *batman_if)
-{
- memcpy(((struct batman_packet *)(batman_if->packet_buff))->orig,
- batman_if->net_dev->dev_addr, ETH_ALEN);
- memcpy(((struct batman_packet *)(batman_if->packet_buff))->prev_sender,
- batman_if->net_dev->dev_addr, ETH_ALEN);
-}
-
-static void check_known_mac_addr(struct net_device *net_dev)
-{
- struct batman_if *batman_if;
-
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if ((batman_if->if_status != IF_ACTIVE) &&
- (batman_if->if_status != IF_TO_BE_ACTIVATED))
- continue;
-
- if (batman_if->net_dev == net_dev)
- continue;
-
- if (!compare_orig(batman_if->net_dev->dev_addr,
- net_dev->dev_addr))
- continue;
-
- pr_warning("The newly added mac address (%pM) already exists "
- "on: %s\n", net_dev->dev_addr,
- batman_if->net_dev->name);
- pr_warning("It is strongly recommended to keep mac addresses "
- "unique to avoid problems!\n");
- }
- rcu_read_unlock();
-}
-
-int hardif_min_mtu(struct net_device *soft_iface)
-{
- struct bat_priv *bat_priv = netdev_priv(soft_iface);
- struct batman_if *batman_if;
- /* allow big frames if all devices are capable to do so
- * (have MTU > 1500 + BAT_HEADER_LEN) */
- int min_mtu = ETH_DATA_LEN;
-
- if (atomic_read(&bat_priv->fragmentation))
- goto out;
-
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if ((batman_if->if_status != IF_ACTIVE) &&
- (batman_if->if_status != IF_TO_BE_ACTIVATED))
- continue;
-
- if (batman_if->soft_iface != soft_iface)
- continue;
-
- min_mtu = min_t(int, batman_if->net_dev->mtu - BAT_HEADER_LEN,
- min_mtu);
- }
- rcu_read_unlock();
-out:
- return min_mtu;
-}
-
-/* adjusts the MTU if a new interface with a smaller MTU appeared. */
-void update_min_mtu(struct net_device *soft_iface)
-{
- int min_mtu;
-
- min_mtu = hardif_min_mtu(soft_iface);
- if (soft_iface->mtu != min_mtu)
- soft_iface->mtu = min_mtu;
-}
-
-static void hardif_activate_interface(struct batman_if *batman_if)
-{
- struct bat_priv *bat_priv;
-
- if (batman_if->if_status != IF_INACTIVE)
- return;
-
- bat_priv = netdev_priv(batman_if->soft_iface);
-
- update_mac_addresses(batman_if);
- batman_if->if_status = IF_TO_BE_ACTIVATED;
-
- /**
- * the first active interface becomes our primary interface or
- * the next active interface after the old primay interface was removed
- */
- if (!bat_priv->primary_if)
- set_primary_if(bat_priv, batman_if);
-
- bat_info(batman_if->soft_iface, "Interface activated: %s\n",
- batman_if->net_dev->name);
-
- update_min_mtu(batman_if->soft_iface);
- return;
-}
-
-static void hardif_deactivate_interface(struct batman_if *batman_if)
-{
- if ((batman_if->if_status != IF_ACTIVE) &&
- (batman_if->if_status != IF_TO_BE_ACTIVATED))
- return;
-
- batman_if->if_status = IF_INACTIVE;
-
- bat_info(batman_if->soft_iface, "Interface deactivated: %s\n",
- batman_if->net_dev->name);
-
- update_min_mtu(batman_if->soft_iface);
-}
-
-int hardif_enable_interface(struct batman_if *batman_if, char *iface_name)
-{
- struct bat_priv *bat_priv;
- struct batman_packet *batman_packet;
-
- if (batman_if->if_status != IF_NOT_IN_USE)
- goto out;
-
- batman_if->soft_iface = dev_get_by_name(&init_net, iface_name);
-
- if (!batman_if->soft_iface) {
- batman_if->soft_iface = softif_create(iface_name);
-
- if (!batman_if->soft_iface)
- goto err;
-
- /* dev_get_by_name() increases the reference counter for us */
- dev_hold(batman_if->soft_iface);
- }
-
- bat_priv = netdev_priv(batman_if->soft_iface);
- batman_if->packet_len = BAT_PACKET_LEN;
- batman_if->packet_buff = kmalloc(batman_if->packet_len, GFP_ATOMIC);
-
- if (!batman_if->packet_buff) {
- bat_err(batman_if->soft_iface, "Can't add interface packet "
- "(%s): out of memory\n", batman_if->net_dev->name);
- goto err;
- }
-
- batman_packet = (struct batman_packet *)(batman_if->packet_buff);
- batman_packet->packet_type = BAT_PACKET;
- batman_packet->version = COMPAT_VERSION;
- batman_packet->flags = 0;
- batman_packet->ttl = 2;
- batman_packet->tq = TQ_MAX_VALUE;
- batman_packet->num_hna = 0;
-
- batman_if->if_num = bat_priv->num_ifaces;
- bat_priv->num_ifaces++;
- batman_if->if_status = IF_INACTIVE;
- orig_hash_add_if(batman_if, bat_priv->num_ifaces);
-
- batman_if->batman_adv_ptype.type = __constant_htons(ETH_P_BATMAN);
- batman_if->batman_adv_ptype.func = batman_skb_recv;
- batman_if->batman_adv_ptype.dev = batman_if->net_dev;
- kref_get(&batman_if->refcount);
- dev_add_pack(&batman_if->batman_adv_ptype);
-
- atomic_set(&batman_if->seqno, 1);
- atomic_set(&batman_if->frag_seqno, 1);
- bat_info(batman_if->soft_iface, "Adding interface: %s\n",
- batman_if->net_dev->name);
-
- if (atomic_read(&bat_priv->fragmentation) && batman_if->net_dev->mtu <
- ETH_DATA_LEN + BAT_HEADER_LEN)
- bat_info(batman_if->soft_iface,
- "The MTU of interface %s is too small (%i) to handle "
- "the transport of batman-adv packets. Packets going "
- "over this interface will be fragmented on layer2 "
- "which could impact the performance. Setting the MTU "
- "to %zi would solve the problem.\n",
- batman_if->net_dev->name, batman_if->net_dev->mtu,
- ETH_DATA_LEN + BAT_HEADER_LEN);
-
- if (!atomic_read(&bat_priv->fragmentation) && batman_if->net_dev->mtu <
- ETH_DATA_LEN + BAT_HEADER_LEN)
- bat_info(batman_if->soft_iface,
- "The MTU of interface %s is too small (%i) to handle "
- "the transport of batman-adv packets. If you experience"
- " problems getting traffic through try increasing the "
- "MTU to %zi.\n",
- batman_if->net_dev->name, batman_if->net_dev->mtu,
- ETH_DATA_LEN + BAT_HEADER_LEN);
-
- if (hardif_is_iface_up(batman_if))
- hardif_activate_interface(batman_if);
- else
- bat_err(batman_if->soft_iface, "Not using interface %s "
- "(retrying later): interface not active\n",
- batman_if->net_dev->name);
-
- /* begin scheduling originator messages on that interface */
- schedule_own_packet(batman_if);
-
-out:
- return 0;
-
-err:
- return -ENOMEM;
-}
-
-void hardif_disable_interface(struct batman_if *batman_if)
-{
- struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
-
- if (batman_if->if_status == IF_ACTIVE)
- hardif_deactivate_interface(batman_if);
-
- if (batman_if->if_status != IF_INACTIVE)
- return;
-
- bat_info(batman_if->soft_iface, "Removing interface: %s\n",
- batman_if->net_dev->name);
- dev_remove_pack(&batman_if->batman_adv_ptype);
- kref_put(&batman_if->refcount, hardif_free_ref);
-
- bat_priv->num_ifaces--;
- orig_hash_del_if(batman_if, bat_priv->num_ifaces);
-
- if (batman_if == bat_priv->primary_if) {
- struct batman_if *new_if;
-
- new_if = get_active_batman_if(batman_if->soft_iface);
- set_primary_if(bat_priv, new_if);
-
- if (new_if)
- kref_put(&new_if->refcount, hardif_free_ref);
- }
-
- kfree(batman_if->packet_buff);
- batman_if->packet_buff = NULL;
- batman_if->if_status = IF_NOT_IN_USE;
-
- /* delete all references to this batman_if */
- purge_orig_ref(bat_priv);
- purge_outstanding_packets(bat_priv, batman_if);
- dev_put(batman_if->soft_iface);
-
- /* nobody uses this interface anymore */
- if (!bat_priv->num_ifaces)
- softif_destroy(batman_if->soft_iface);
-
- batman_if->soft_iface = NULL;
-}
-
-static struct batman_if *hardif_add_interface(struct net_device *net_dev)
-{
- struct batman_if *batman_if;
- int ret;
-
- ret = is_valid_iface(net_dev);
- if (ret != 1)
- goto out;
-
- dev_hold(net_dev);
-
- batman_if = kmalloc(sizeof(struct batman_if), GFP_ATOMIC);
- if (!batman_if) {
- pr_err("Can't add interface (%s): out of memory\n",
- net_dev->name);
- goto release_dev;
- }
-
- ret = sysfs_add_hardif(&batman_if->hardif_obj, net_dev);
- if (ret)
- goto free_if;
-
- batman_if->if_num = -1;
- batman_if->net_dev = net_dev;
- batman_if->soft_iface = NULL;
- batman_if->if_status = IF_NOT_IN_USE;
- INIT_LIST_HEAD(&batman_if->list);
- kref_init(&batman_if->refcount);
-
- check_known_mac_addr(batman_if->net_dev);
-
- spin_lock(&if_list_lock);
- list_add_tail_rcu(&batman_if->list, &if_list);
- spin_unlock(&if_list_lock);
-
- /* extra reference for return */
- kref_get(&batman_if->refcount);
- return batman_if;
-
-free_if:
- kfree(batman_if);
-release_dev:
- dev_put(net_dev);
-out:
- return NULL;
-}
-
-static void hardif_remove_interface(struct batman_if *batman_if)
-{
- /* first deactivate interface */
- if (batman_if->if_status != IF_NOT_IN_USE)
- hardif_disable_interface(batman_if);
-
- if (batman_if->if_status != IF_NOT_IN_USE)
- return;
-
- batman_if->if_status = IF_TO_BE_REMOVED;
- synchronize_rcu();
- sysfs_del_hardif(&batman_if->hardif_obj);
- call_rcu(&batman_if->rcu, hardif_free_rcu);
-}
-
-void hardif_remove_interfaces(void)
-{
- struct batman_if *batman_if, *batman_if_tmp;
- struct list_head if_queue;
-
- INIT_LIST_HEAD(&if_queue);
-
- spin_lock(&if_list_lock);
- list_for_each_entry_safe(batman_if, batman_if_tmp, &if_list, list) {
- list_del_rcu(&batman_if->list);
- list_add_tail(&batman_if->list, &if_queue);
- }
- spin_unlock(&if_list_lock);
-
- rtnl_lock();
- list_for_each_entry_safe(batman_if, batman_if_tmp, &if_queue, list) {
- hardif_remove_interface(batman_if);
- }
- rtnl_unlock();
-}
-
-static int hard_if_event(struct notifier_block *this,
- unsigned long event, void *ptr)
-{
- struct net_device *net_dev = (struct net_device *)ptr;
- struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
- struct bat_priv *bat_priv;
-
- if (!batman_if && event == NETDEV_REGISTER)
- batman_if = hardif_add_interface(net_dev);
-
- if (!batman_if)
- goto out;
-
- switch (event) {
- case NETDEV_UP:
- hardif_activate_interface(batman_if);
- break;
- case NETDEV_GOING_DOWN:
- case NETDEV_DOWN:
- hardif_deactivate_interface(batman_if);
- break;
- case NETDEV_UNREGISTER:
- spin_lock(&if_list_lock);
- list_del_rcu(&batman_if->list);
- spin_unlock(&if_list_lock);
-
- hardif_remove_interface(batman_if);
- break;
- case NETDEV_CHANGEMTU:
- if (batman_if->soft_iface)
- update_min_mtu(batman_if->soft_iface);
- break;
- case NETDEV_CHANGEADDR:
- if (batman_if->if_status == IF_NOT_IN_USE)
- goto hardif_put;
-
- check_known_mac_addr(batman_if->net_dev);
- update_mac_addresses(batman_if);
-
- bat_priv = netdev_priv(batman_if->soft_iface);
- if (batman_if == bat_priv->primary_if)
- update_primary_addr(bat_priv);
- break;
- default:
- break;
- };
-
-hardif_put:
- kref_put(&batman_if->refcount, hardif_free_ref);
-out:
- return NOTIFY_DONE;
-}
-
-/* receive a packet with the batman ethertype coming on a hard
- * interface */
-int batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
- struct packet_type *ptype, struct net_device *orig_dev)
-{
- struct bat_priv *bat_priv;
- struct batman_packet *batman_packet;
- struct batman_if *batman_if;
- int ret;
-
- batman_if = container_of(ptype, struct batman_if, batman_adv_ptype);
- skb = skb_share_check(skb, GFP_ATOMIC);
-
- /* skb was released by skb_share_check() */
- if (!skb)
- goto err_out;
-
- /* packet should hold at least type and version */
- if (unlikely(!pskb_may_pull(skb, 2)))
- goto err_free;
-
- /* expect a valid ethernet header here. */
- if (unlikely(skb->mac_len != sizeof(struct ethhdr)
- || !skb_mac_header(skb)))
- goto err_free;
-
- if (!batman_if->soft_iface)
- goto err_free;
-
- bat_priv = netdev_priv(batman_if->soft_iface);
-
- if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
- goto err_free;
-
- /* discard frames on not active interfaces */
- if (batman_if->if_status != IF_ACTIVE)
- goto err_free;
-
- batman_packet = (struct batman_packet *)skb->data;
-
- if (batman_packet->version != COMPAT_VERSION) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: incompatible batman version (%i)\n",
- batman_packet->version);
- goto err_free;
- }
-
- /* all receive handlers return whether they received or reused
- * the supplied skb. if not, we have to free the skb. */
-
- switch (batman_packet->packet_type) {
- /* batman originator packet */
- case BAT_PACKET:
- ret = recv_bat_packet(skb, batman_if);
- break;
-
- /* batman icmp packet */
- case BAT_ICMP:
- ret = recv_icmp_packet(skb, batman_if);
- break;
-
- /* unicast packet */
- case BAT_UNICAST:
- ret = recv_unicast_packet(skb, batman_if);
- break;
-
- /* fragmented unicast packet */
- case BAT_UNICAST_FRAG:
- ret = recv_ucast_frag_packet(skb, batman_if);
- break;
-
- /* broadcast packet */
- case BAT_BCAST:
- ret = recv_bcast_packet(skb, batman_if);
- break;
-
- /* vis packet */
- case BAT_VIS:
- ret = recv_vis_packet(skb, batman_if);
- break;
- default:
- ret = NET_RX_DROP;
- }
-
- if (ret == NET_RX_DROP)
- kfree_skb(skb);
-
- /* return NET_RX_SUCCESS in any case as we
- * most probably dropped the packet for
- * routing-logical reasons. */
-
- return NET_RX_SUCCESS;
-
-err_free:
- kfree_skb(skb);
-err_out:
- return NET_RX_DROP;
-}
-
-struct notifier_block hard_if_notifier = {
- .notifier_call = hard_if_event,
-};
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_
-#define _NET_BATMAN_ADV_HARD_INTERFACE_H_
-
-#define IF_NOT_IN_USE 0
-#define IF_TO_BE_REMOVED 1
-#define IF_INACTIVE 2
-#define IF_ACTIVE 3
-#define IF_TO_BE_ACTIVATED 4
-#define IF_I_WANT_YOU 5
-
-extern struct notifier_block hard_if_notifier;
-
-struct batman_if *get_batman_if_by_netdev(struct net_device *net_dev);
-int hardif_enable_interface(struct batman_if *batman_if, char *iface_name);
-void hardif_disable_interface(struct batman_if *batman_if);
-void hardif_remove_interfaces(void);
-int batman_skb_recv(struct sk_buff *skb,
- struct net_device *dev,
- struct packet_type *ptype,
- struct net_device *orig_dev);
-int hardif_min_mtu(struct net_device *soft_iface);
-void update_min_mtu(struct net_device *soft_iface);
-
-static inline void hardif_free_ref(struct kref *refcount)
-{
- struct batman_if *batman_if;
-
- batman_if = container_of(refcount, struct batman_if, refcount);
- kfree(batman_if);
-}
-
-#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
- *
- * Simon Wunderlich, Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "hash.h"
-
-/* clears the hash */
-static void hash_init(struct hashtable_t *hash)
-{
- int i;
-
- hash->elements = 0;
-
- for (i = 0 ; i < hash->size; i++)
- INIT_HLIST_HEAD(&hash->table[i]);
-}
-
-/* free only the hashtable and the hash itself. */
-void hash_destroy(struct hashtable_t *hash)
-{
- kfree(hash->table);
- kfree(hash);
-}
-
-/* allocates and clears the hash */
-struct hashtable_t *hash_new(int size)
-{
- struct hashtable_t *hash;
-
- hash = kmalloc(sizeof(struct hashtable_t) , GFP_ATOMIC);
-
- if (hash == NULL)
- return NULL;
-
- hash->size = size;
- hash->table = kmalloc(sizeof(struct element_t *) * size, GFP_ATOMIC);
-
- if (hash->table == NULL) {
- kfree(hash);
- return NULL;
- }
-
- hash_init(hash);
-
- return hash;
-}
-
-/* remove bucket (this might be used in hash_iterate() if you already found the
- * bucket you want to delete and don't need the overhead to find it again with
- * hash_remove(). But usually, you don't want to use this function, as it
- * fiddles with hash-internals. */
-void *hash_remove_bucket(struct hashtable_t *hash, struct hash_it_t *hash_it_t)
-{
- void *data_save;
- struct element_t *bucket;
-
- bucket = hlist_entry(hash_it_t->walk, struct element_t, hlist);
- data_save = bucket->data;
-
- hlist_del(hash_it_t->walk);
- kfree(bucket);
- hash->elements--;
-
- return data_save;
-}
+++ /dev/null
-/*
- * Copyright (C) 2006-2010 B.A.T.M.A.N. contributors:
- *
- * Simon Wunderlich, Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_HASH_H_
-#define _NET_BATMAN_ADV_HASH_H_
-
-#include <linux/list.h>
-
-#define HASHIT(name) struct hash_it_t name = { \
- .index = 0, .walk = NULL, \
- .safe = NULL}
-
-/* callback to a compare function. should
- * compare 2 element datas for their keys,
- * return 0 if same and not 0 if not
- * same */
-typedef int (*hashdata_compare_cb)(void *, void *);
-
-/* the hashfunction, should return an index
- * based on the key in the data of the first
- * argument and the size the second */
-typedef int (*hashdata_choose_cb)(void *, int);
-typedef void (*hashdata_free_cb)(void *, void *);
-
-struct element_t {
- void *data; /* pointer to the data */
- struct hlist_node hlist; /* bucket list pointer */
-};
-
-struct hash_it_t {
- size_t index;
- struct hlist_node *walk;
- struct hlist_node *safe;
-};
-
-struct hashtable_t {
- struct hlist_head *table; /* the hashtable itself, with the buckets */
- int elements; /* number of elements registered */
- int size; /* size of hashtable */
-};
-
-/* allocates and clears the hash */
-struct hashtable_t *hash_new(int size);
-
-/* remove bucket (this might be used in hash_iterate() if you already found the
- * bucket you want to delete and don't need the overhead to find it again with
- * hash_remove(). But usually, you don't want to use this function, as it
- * fiddles with hash-internals. */
-void *hash_remove_bucket(struct hashtable_t *hash, struct hash_it_t *hash_it_t);
-
-/* free only the hashtable and the hash itself. */
-void hash_destroy(struct hashtable_t *hash);
-
-/* remove the hash structure. if hashdata_free_cb != NULL, this function will be
- * called to remove the elements inside of the hash. if you don't remove the
- * elements, memory might be leaked. */
-static inline void hash_delete(struct hashtable_t *hash,
- hashdata_free_cb free_cb, void *arg)
-{
- struct hlist_head *head;
- struct hlist_node *walk, *safe;
- struct element_t *bucket;
- int i;
-
- for (i = 0; i < hash->size; i++) {
- head = &hash->table[i];
-
- hlist_for_each_safe(walk, safe, head) {
- bucket = hlist_entry(walk, struct element_t, hlist);
- if (free_cb != NULL)
- free_cb(bucket->data, arg);
-
- hlist_del(walk);
- kfree(bucket);
- }
- }
-
- hash_destroy(hash);
-}
-
-/* adds data to the hashtable. returns 0 on success, -1 on error */
-static inline int hash_add(struct hashtable_t *hash,
- hashdata_compare_cb compare,
- hashdata_choose_cb choose, void *data)
-{
- int index;
- struct hlist_head *head;
- struct hlist_node *walk, *safe;
- struct element_t *bucket;
-
- if (!hash)
- return -1;
-
- index = choose(data, hash->size);
- head = &hash->table[index];
-
- hlist_for_each_safe(walk, safe, head) {
- bucket = hlist_entry(walk, struct element_t, hlist);
- if (compare(bucket->data, data))
- return -1;
- }
-
- /* no duplicate found in list, add new element */
- bucket = kmalloc(sizeof(struct element_t), GFP_ATOMIC);
-
- if (bucket == NULL)
- return -1;
-
- bucket->data = data;
- hlist_add_head(&bucket->hlist, head);
-
- hash->elements++;
- return 0;
-}
-
-/* removes data from hash, if found. returns pointer do data on success, so you
- * can remove the used structure yourself, or NULL on error . data could be the
- * structure you use with just the key filled, we just need the key for
- * comparing. */
-static inline void *hash_remove(struct hashtable_t *hash,
- hashdata_compare_cb compare,
- hashdata_choose_cb choose, void *data)
-{
- struct hash_it_t hash_it_t;
- struct element_t *bucket;
- struct hlist_head *head;
-
- hash_it_t.index = choose(data, hash->size);
- head = &hash->table[hash_it_t.index];
-
- hlist_for_each(hash_it_t.walk, head) {
- bucket = hlist_entry(hash_it_t.walk, struct element_t, hlist);
- if (compare(bucket->data, data))
- return hash_remove_bucket(hash, &hash_it_t);
- }
-
- return NULL;
-}
-
-/* finds data, based on the key in keydata. returns the found data on success,
- * or NULL on error */
-static inline void *hash_find(struct hashtable_t *hash,
- hashdata_compare_cb compare,
- hashdata_choose_cb choose, void *keydata)
-{
- int index;
- struct hlist_head *head;
- struct hlist_node *walk;
- struct element_t *bucket;
-
- if (!hash)
- return NULL;
-
- index = choose(keydata , hash->size);
- head = &hash->table[index];
-
- hlist_for_each(walk, head) {
- bucket = hlist_entry(walk, struct element_t, hlist);
- if (compare(bucket->data, keydata))
- return bucket->data;
- }
-
- return NULL;
-}
-
-/* resize the hash, returns the pointer to the new hash or NULL on
- * error. removes the old hash on success */
-static inline struct hashtable_t *hash_resize(struct hashtable_t *hash,
- hashdata_choose_cb choose,
- int size)
-{
- struct hashtable_t *new_hash;
- struct hlist_head *head, *new_head;
- struct hlist_node *walk, *safe;
- struct element_t *bucket;
- int i, new_index;
-
- /* initialize a new hash with the new size */
- new_hash = hash_new(size);
-
- if (new_hash == NULL)
- return NULL;
-
- /* copy the elements */
- for (i = 0; i < hash->size; i++) {
- head = &hash->table[i];
-
- hlist_for_each_safe(walk, safe, head) {
- bucket = hlist_entry(walk, struct element_t, hlist);
-
- new_index = choose(bucket->data, size);
- new_head = &new_hash->table[new_index];
-
- hlist_del(walk);
- hlist_add_head(walk, new_head);
- }
- }
-
- hash_destroy(hash);
-
- return new_hash;
-}
-
-/* iterate though the hash. First element is selected if an iterator
- * initialized with HASHIT() is supplied as iter. Use the returned
- * (or supplied) iterator to access the elements until hash_iterate returns
- * NULL. */
-static inline struct hash_it_t *hash_iterate(struct hashtable_t *hash,
- struct hash_it_t *iter)
-{
- if (!hash)
- return NULL;
- if (!iter)
- return NULL;
-
- iter->walk = iter->safe;
-
- /* we search for the next head with list entries */
- if (!iter->walk) {
- while (iter->index < hash->size) {
- if (hlist_empty(&hash->table[iter->index]))
- iter->index++;
- else {
- iter->walk = hash->table[iter->index].first;
-
- /* search next time */
- ++iter->index;
- break;
- }
- }
- }
-
- /* return iter when we found bucket otherwise null */
- if (!iter->walk)
- return NULL;
-
- iter->safe = iter->walk->next;
- return iter;
-}
-
-#endif /* _NET_BATMAN_ADV_HASH_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include <linux/debugfs.h>
-#include <linux/slab.h>
-#include "icmp_socket.h"
-#include "send.h"
-#include "types.h"
-#include "hash.h"
-#include "originator.h"
-#include "hard-interface.h"
-
-
-static struct socket_client *socket_client_hash[256];
-
-static void bat_socket_add_packet(struct socket_client *socket_client,
- struct icmp_packet_rr *icmp_packet,
- size_t icmp_len);
-
-void bat_socket_init(void)
-{
- memset(socket_client_hash, 0, sizeof(socket_client_hash));
-}
-
-static int bat_socket_open(struct inode *inode, struct file *file)
-{
- unsigned int i;
- struct socket_client *socket_client;
-
- nonseekable_open(inode, file);
-
- socket_client = kmalloc(sizeof(struct socket_client), GFP_KERNEL);
-
- if (!socket_client)
- return -ENOMEM;
-
- for (i = 0; i < ARRAY_SIZE(socket_client_hash); i++) {
- if (!socket_client_hash[i]) {
- socket_client_hash[i] = socket_client;
- break;
- }
- }
-
- if (i == ARRAY_SIZE(socket_client_hash)) {
- pr_err("Error - can't add another packet client: "
- "maximum number of clients reached\n");
- kfree(socket_client);
- return -EXFULL;
- }
-
- INIT_LIST_HEAD(&socket_client->queue_list);
- socket_client->queue_len = 0;
- socket_client->index = i;
- socket_client->bat_priv = inode->i_private;
- spin_lock_init(&socket_client->lock);
- init_waitqueue_head(&socket_client->queue_wait);
-
- file->private_data = socket_client;
-
- inc_module_count();
- return 0;
-}
-
-static int bat_socket_release(struct inode *inode, struct file *file)
-{
- struct socket_client *socket_client = file->private_data;
- struct socket_packet *socket_packet;
- struct list_head *list_pos, *list_pos_tmp;
-
- spin_lock_bh(&socket_client->lock);
-
- /* for all packets in the queue ... */
- list_for_each_safe(list_pos, list_pos_tmp, &socket_client->queue_list) {
- socket_packet = list_entry(list_pos,
- struct socket_packet, list);
-
- list_del(list_pos);
- kfree(socket_packet);
- }
-
- socket_client_hash[socket_client->index] = NULL;
- spin_unlock_bh(&socket_client->lock);
-
- kfree(socket_client);
- dec_module_count();
-
- return 0;
-}
-
-static ssize_t bat_socket_read(struct file *file, char __user *buf,
- size_t count, loff_t *ppos)
-{
- struct socket_client *socket_client = file->private_data;
- struct socket_packet *socket_packet;
- size_t packet_len;
- int error;
-
- if ((file->f_flags & O_NONBLOCK) && (socket_client->queue_len == 0))
- return -EAGAIN;
-
- if ((!buf) || (count < sizeof(struct icmp_packet)))
- return -EINVAL;
-
- if (!access_ok(VERIFY_WRITE, buf, count))
- return -EFAULT;
-
- error = wait_event_interruptible(socket_client->queue_wait,
- socket_client->queue_len);
-
- if (error)
- return error;
-
- spin_lock_bh(&socket_client->lock);
-
- socket_packet = list_first_entry(&socket_client->queue_list,
- struct socket_packet, list);
- list_del(&socket_packet->list);
- socket_client->queue_len--;
-
- spin_unlock_bh(&socket_client->lock);
-
- error = __copy_to_user(buf, &socket_packet->icmp_packet,
- socket_packet->icmp_len);
-
- packet_len = socket_packet->icmp_len;
- kfree(socket_packet);
-
- if (error)
- return -EFAULT;
-
- return packet_len;
-}
-
-static ssize_t bat_socket_write(struct file *file, const char __user *buff,
- size_t len, loff_t *off)
-{
- struct socket_client *socket_client = file->private_data;
- struct bat_priv *bat_priv = socket_client->bat_priv;
- struct sk_buff *skb;
- struct icmp_packet_rr *icmp_packet;
-
- struct orig_node *orig_node;
- struct batman_if *batman_if;
- size_t packet_len = sizeof(struct icmp_packet);
- uint8_t dstaddr[ETH_ALEN];
-
- if (len < sizeof(struct icmp_packet)) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Error - can't send packet from char device: "
- "invalid packet size\n");
- return -EINVAL;
- }
-
- if (!bat_priv->primary_if)
- return -EFAULT;
-
- if (len >= sizeof(struct icmp_packet_rr))
- packet_len = sizeof(struct icmp_packet_rr);
-
- skb = dev_alloc_skb(packet_len + sizeof(struct ethhdr));
- if (!skb)
- return -ENOMEM;
-
- skb_reserve(skb, sizeof(struct ethhdr));
- icmp_packet = (struct icmp_packet_rr *)skb_put(skb, packet_len);
-
- if (!access_ok(VERIFY_READ, buff, packet_len)) {
- len = -EFAULT;
- goto free_skb;
- }
-
- if (__copy_from_user(icmp_packet, buff, packet_len)) {
- len = -EFAULT;
- goto free_skb;
- }
-
- if (icmp_packet->packet_type != BAT_ICMP) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Error - can't send packet from char device: "
- "got bogus packet type (expected: BAT_ICMP)\n");
- len = -EINVAL;
- goto free_skb;
- }
-
- if (icmp_packet->msg_type != ECHO_REQUEST) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Error - can't send packet from char device: "
- "got bogus message type (expected: ECHO_REQUEST)\n");
- len = -EINVAL;
- goto free_skb;
- }
-
- icmp_packet->uid = socket_client->index;
-
- if (icmp_packet->version != COMPAT_VERSION) {
- icmp_packet->msg_type = PARAMETER_PROBLEM;
- icmp_packet->ttl = COMPAT_VERSION;
- bat_socket_add_packet(socket_client, icmp_packet, packet_len);
- goto free_skb;
- }
-
- if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
- goto dst_unreach;
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
- orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
- compare_orig, choose_orig,
- icmp_packet->dst));
-
- if (!orig_node)
- goto unlock;
-
- if (!orig_node->router)
- goto unlock;
-
- batman_if = orig_node->router->if_incoming;
- memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- if (!batman_if)
- goto dst_unreach;
-
- if (batman_if->if_status != IF_ACTIVE)
- goto dst_unreach;
-
- memcpy(icmp_packet->orig,
- bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
-
- if (packet_len == sizeof(struct icmp_packet_rr))
- memcpy(icmp_packet->rr, batman_if->net_dev->dev_addr, ETH_ALEN);
-
-
- send_skb_packet(skb, batman_if, dstaddr);
-
- goto out;
-
-unlock:
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-dst_unreach:
- icmp_packet->msg_type = DESTINATION_UNREACHABLE;
- bat_socket_add_packet(socket_client, icmp_packet, packet_len);
-free_skb:
- kfree_skb(skb);
-out:
- return len;
-}
-
-static unsigned int bat_socket_poll(struct file *file, poll_table *wait)
-{
- struct socket_client *socket_client = file->private_data;
-
- poll_wait(file, &socket_client->queue_wait, wait);
-
- if (socket_client->queue_len > 0)
- return POLLIN | POLLRDNORM;
-
- return 0;
-}
-
-static const struct file_operations fops = {
- .owner = THIS_MODULE,
- .open = bat_socket_open,
- .release = bat_socket_release,
- .read = bat_socket_read,
- .write = bat_socket_write,
- .poll = bat_socket_poll,
- .llseek = no_llseek,
-};
-
-int bat_socket_setup(struct bat_priv *bat_priv)
-{
- struct dentry *d;
-
- if (!bat_priv->debug_dir)
- goto err;
-
- d = debugfs_create_file(ICMP_SOCKET, S_IFREG | S_IWUSR | S_IRUSR,
- bat_priv->debug_dir, bat_priv, &fops);
- if (d)
- goto err;
-
- return 0;
-
-err:
- return 1;
-}
-
-static void bat_socket_add_packet(struct socket_client *socket_client,
- struct icmp_packet_rr *icmp_packet,
- size_t icmp_len)
-{
- struct socket_packet *socket_packet;
-
- socket_packet = kmalloc(sizeof(struct socket_packet), GFP_ATOMIC);
-
- if (!socket_packet)
- return;
-
- INIT_LIST_HEAD(&socket_packet->list);
- memcpy(&socket_packet->icmp_packet, icmp_packet, icmp_len);
- socket_packet->icmp_len = icmp_len;
-
- spin_lock_bh(&socket_client->lock);
-
- /* while waiting for the lock the socket_client could have been
- * deleted */
- if (!socket_client_hash[icmp_packet->uid]) {
- spin_unlock_bh(&socket_client->lock);
- kfree(socket_packet);
- return;
- }
-
- list_add_tail(&socket_packet->list, &socket_client->queue_list);
- socket_client->queue_len++;
-
- if (socket_client->queue_len > 100) {
- socket_packet = list_first_entry(&socket_client->queue_list,
- struct socket_packet, list);
-
- list_del(&socket_packet->list);
- kfree(socket_packet);
- socket_client->queue_len--;
- }
-
- spin_unlock_bh(&socket_client->lock);
-
- wake_up(&socket_client->queue_wait);
-}
-
-void bat_socket_receive_packet(struct icmp_packet_rr *icmp_packet,
- size_t icmp_len)
-{
- struct socket_client *hash = socket_client_hash[icmp_packet->uid];
-
- if (hash)
- bat_socket_add_packet(hash, icmp_packet, icmp_len);
-}
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_ICMP_SOCKET_H_
-#define _NET_BATMAN_ADV_ICMP_SOCKET_H_
-
-#include "types.h"
-
-#define ICMP_SOCKET "socket"
-
-void bat_socket_init(void);
-int bat_socket_setup(struct bat_priv *bat_priv);
-void bat_socket_receive_packet(struct icmp_packet_rr *icmp_packet,
- size_t icmp_len);
-
-#endif /* _NET_BATMAN_ADV_ICMP_SOCKET_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "bat_sysfs.h"
-#include "bat_debugfs.h"
-#include "routing.h"
-#include "send.h"
-#include "originator.h"
-#include "soft-interface.h"
-#include "icmp_socket.h"
-#include "translation-table.h"
-#include "hard-interface.h"
-#include "gateway_client.h"
-#include "types.h"
-#include "vis.h"
-#include "hash.h"
-
-struct list_head if_list;
-
-unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
-
-struct workqueue_struct *bat_event_workqueue;
-
-static int __init batman_init(void)
-{
- INIT_LIST_HEAD(&if_list);
-
- /* the name should not be longer than 10 chars - see
- * http://lwn.net/Articles/23634/ */
- bat_event_workqueue = create_singlethread_workqueue("bat_events");
-
- if (!bat_event_workqueue)
- return -ENOMEM;
-
- bat_socket_init();
- debugfs_init();
-
- register_netdevice_notifier(&hard_if_notifier);
-
- pr_info("B.A.T.M.A.N. advanced %s%s (compatibility version %i) "
- "loaded\n", SOURCE_VERSION, REVISION_VERSION_STR,
- COMPAT_VERSION);
-
- return 0;
-}
-
-static void __exit batman_exit(void)
-{
- debugfs_destroy();
- unregister_netdevice_notifier(&hard_if_notifier);
- hardif_remove_interfaces();
-
- flush_workqueue(bat_event_workqueue);
- destroy_workqueue(bat_event_workqueue);
- bat_event_workqueue = NULL;
-
- rcu_barrier();
-}
-
-int mesh_init(struct net_device *soft_iface)
-{
- struct bat_priv *bat_priv = netdev_priv(soft_iface);
-
- spin_lock_init(&bat_priv->orig_hash_lock);
- spin_lock_init(&bat_priv->forw_bat_list_lock);
- spin_lock_init(&bat_priv->forw_bcast_list_lock);
- spin_lock_init(&bat_priv->hna_lhash_lock);
- spin_lock_init(&bat_priv->hna_ghash_lock);
- spin_lock_init(&bat_priv->gw_list_lock);
- spin_lock_init(&bat_priv->vis_hash_lock);
- spin_lock_init(&bat_priv->vis_list_lock);
- spin_lock_init(&bat_priv->softif_neigh_lock);
-
- INIT_HLIST_HEAD(&bat_priv->forw_bat_list);
- INIT_HLIST_HEAD(&bat_priv->forw_bcast_list);
- INIT_HLIST_HEAD(&bat_priv->gw_list);
- INIT_HLIST_HEAD(&bat_priv->softif_neigh_list);
-
- if (originator_init(bat_priv) < 1)
- goto err;
-
- if (hna_local_init(bat_priv) < 1)
- goto err;
-
- if (hna_global_init(bat_priv) < 1)
- goto err;
-
- hna_local_add(soft_iface, soft_iface->dev_addr);
-
- if (vis_init(bat_priv) < 1)
- goto err;
-
- atomic_set(&bat_priv->mesh_state, MESH_ACTIVE);
- goto end;
-
-err:
- pr_err("Unable to allocate memory for mesh information structures: "
- "out of mem ?\n");
- mesh_free(soft_iface);
- return -1;
-
-end:
- return 0;
-}
-
-void mesh_free(struct net_device *soft_iface)
-{
- struct bat_priv *bat_priv = netdev_priv(soft_iface);
-
- atomic_set(&bat_priv->mesh_state, MESH_DEACTIVATING);
-
- purge_outstanding_packets(bat_priv, NULL);
-
- vis_quit(bat_priv);
-
- gw_node_purge(bat_priv);
- originator_free(bat_priv);
-
- hna_local_free(bat_priv);
- hna_global_free(bat_priv);
-
- softif_neigh_purge(bat_priv);
-
- atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
-}
-
-void inc_module_count(void)
-{
- try_module_get(THIS_MODULE);
-}
-
-void dec_module_count(void)
-{
- module_put(THIS_MODULE);
-}
-
-int is_my_mac(uint8_t *addr)
-{
- struct batman_if *batman_if;
-
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if (batman_if->if_status != IF_ACTIVE)
- continue;
-
- if (compare_orig(batman_if->net_dev->dev_addr, addr)) {
- rcu_read_unlock();
- return 1;
- }
- }
- rcu_read_unlock();
- return 0;
-
-}
-
-module_init(batman_init);
-module_exit(batman_exit);
-
-MODULE_LICENSE("GPL");
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_SUPPORTED_DEVICE(DRIVER_DEVICE);
-#ifdef REVISION_VERSION
-MODULE_VERSION(SOURCE_VERSION "-" REVISION_VERSION);
-#else
-MODULE_VERSION(SOURCE_VERSION);
-#endif
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_MAIN_H_
-#define _NET_BATMAN_ADV_MAIN_H_
-
-/* Kernel Programming */
-#define LINUX
-
-#define DRIVER_AUTHOR "Marek Lindner <lindner_marek@yahoo.de>, " \
- "Simon Wunderlich <siwu@hrz.tu-chemnitz.de>"
-#define DRIVER_DESC "B.A.T.M.A.N. advanced"
-#define DRIVER_DEVICE "batman-adv"
-
-#define SOURCE_VERSION "next"
-
-
-/* B.A.T.M.A.N. parameters */
-
-#define TQ_MAX_VALUE 255
-#define JITTER 20
-#define TTL 50 /* Time To Live of broadcast messages */
-
-#define PURGE_TIMEOUT 200 /* purge originators after time in seconds if no
- * valid packet comes in -> TODO: check
- * influence on TQ_LOCAL_WINDOW_SIZE */
-#define LOCAL_HNA_TIMEOUT 3600 /* in seconds */
-
-#define TQ_LOCAL_WINDOW_SIZE 64 /* sliding packet range of received originator
- * messages in squence numbers (should be a
- * multiple of our word size) */
-#define TQ_GLOBAL_WINDOW_SIZE 5
-#define TQ_LOCAL_BIDRECT_SEND_MINIMUM 1
-#define TQ_LOCAL_BIDRECT_RECV_MINIMUM 1
-#define TQ_TOTAL_BIDRECT_LIMIT 1
-
-#define NUM_WORDS (TQ_LOCAL_WINDOW_SIZE / WORD_BIT_SIZE)
-
-#define PACKBUFF_SIZE 2000
-#define LOG_BUF_LEN 8192 /* has to be a power of 2 */
-
-#define VIS_INTERVAL 5000 /* 5 seconds */
-
-/* how much worse secondary interfaces may be to
- * to be considered as bonding candidates */
-
-#define BONDING_TQ_THRESHOLD 50
-
-#define MAX_AGGREGATION_BYTES 512 /* should not be bigger than 512 bytes or
- * change the size of
- * forw_packet->direct_link_flags */
-#define MAX_AGGREGATION_MS 100
-
-#define SOFTIF_NEIGH_TIMEOUT 180000 /* 3 minutes */
-
-#define RESET_PROTECTION_MS 30000
-#define EXPECTED_SEQNO_RANGE 65536
-/* don't reset again within 30 seconds */
-
-#define MESH_INACTIVE 0
-#define MESH_ACTIVE 1
-#define MESH_DEACTIVATING 2
-
-#define BCAST_QUEUE_LEN 256
-#define BATMAN_QUEUE_LEN 256
-
-/*
- * Debug Messages
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt /* Append 'batman-adv: ' before
- * kernel messages */
-
-#define DBG_BATMAN 1 /* all messages related to routing / flooding /
- * broadcasting / etc */
-#define DBG_ROUTES 2 /* route or hna added / changed / deleted */
-#define DBG_ALL 3
-
-#define LOG_BUF_LEN 8192 /* has to be a power of 2 */
-
-
-/*
- * Vis
- */
-
-/* #define VIS_SUBCLUSTERS_DISABLED */
-
-/*
- * Kernel headers
- */
-
-#include <linux/mutex.h> /* mutex */
-#include <linux/module.h> /* needed by all modules */
-#include <linux/netdevice.h> /* netdevice */
-#include <linux/etherdevice.h> /* ethernet address classifaction */
-#include <linux/if_ether.h> /* ethernet header */
-#include <linux/poll.h> /* poll_table */
-#include <linux/kthread.h> /* kernel threads */
-#include <linux/pkt_sched.h> /* schedule types */
-#include <linux/workqueue.h> /* workqueue */
-#include <linux/slab.h>
-#include <net/sock.h> /* struct sock */
-#include <linux/jiffies.h>
-#include <linux/seq_file.h>
-#include "types.h"
-
-#ifndef REVISION_VERSION
-#define REVISION_VERSION_STR ""
-#else
-#define REVISION_VERSION_STR " "REVISION_VERSION
-#endif
-
-extern struct list_head if_list;
-
-extern unsigned char broadcast_addr[];
-extern struct workqueue_struct *bat_event_workqueue;
-
-int mesh_init(struct net_device *soft_iface);
-void mesh_free(struct net_device *soft_iface);
-void inc_module_count(void);
-void dec_module_count(void);
-int is_my_mac(uint8_t *addr);
-
-#ifdef CONFIG_BATMAN_ADV_DEBUG
-int debug_log(struct bat_priv *bat_priv, char *fmt, ...);
-
-#define bat_dbg(type, bat_priv, fmt, arg...) \
- do { \
- if (atomic_read(&bat_priv->log_level) & type) \
- debug_log(bat_priv, fmt, ## arg); \
- } \
- while (0)
-#else /* !CONFIG_BATMAN_ADV_DEBUG */
-static inline void bat_dbg(char type __attribute__((unused)),
- struct bat_priv *bat_priv __attribute__((unused)),
- char *fmt __attribute__((unused)), ...)
-{
-}
-#endif
-
-#define bat_warning(net_dev, fmt, arg...) \
- do { \
- struct net_device *_netdev = (net_dev); \
- struct bat_priv *_batpriv = netdev_priv(_netdev); \
- bat_dbg(DBG_ALL, _batpriv, fmt, ## arg); \
- pr_warning("%s: " fmt, _netdev->name, ## arg); \
- } while (0)
-#define bat_info(net_dev, fmt, arg...) \
- do { \
- struct net_device *_netdev = (net_dev); \
- struct bat_priv *_batpriv = netdev_priv(_netdev); \
- bat_dbg(DBG_ALL, _batpriv, fmt, ## arg); \
- pr_info("%s: " fmt, _netdev->name, ## arg); \
- } while (0)
-#define bat_err(net_dev, fmt, arg...) \
- do { \
- struct net_device *_netdev = (net_dev); \
- struct bat_priv *_batpriv = netdev_priv(_netdev); \
- bat_dbg(DBG_ALL, _batpriv, fmt, ## arg); \
- pr_err("%s: " fmt, _netdev->name, ## arg); \
- } while (0)
-
-#endif /* _NET_BATMAN_ADV_MAIN_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2009-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-/* increase the reference counter for this originator */
-
-#include "main.h"
-#include "originator.h"
-#include "hash.h"
-#include "translation-table.h"
-#include "routing.h"
-#include "gateway_client.h"
-#include "hard-interface.h"
-#include "unicast.h"
-#include "soft-interface.h"
-
-static void purge_orig(struct work_struct *work);
-
-static void start_purge_timer(struct bat_priv *bat_priv)
-{
- INIT_DELAYED_WORK(&bat_priv->orig_work, purge_orig);
- queue_delayed_work(bat_event_workqueue, &bat_priv->orig_work, 1 * HZ);
-}
-
-int originator_init(struct bat_priv *bat_priv)
-{
- if (bat_priv->orig_hash)
- return 1;
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
- bat_priv->orig_hash = hash_new(128);
-
- if (!bat_priv->orig_hash)
- goto err;
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- start_purge_timer(bat_priv);
- return 1;
-
-err:
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return 0;
-}
-
-struct neigh_node *
-create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node,
- uint8_t *neigh, struct batman_if *if_incoming)
-{
- struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
- struct neigh_node *neigh_node;
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Creating new last-hop neighbor of originator\n");
-
- neigh_node = kzalloc(sizeof(struct neigh_node), GFP_ATOMIC);
- if (!neigh_node)
- return NULL;
-
- INIT_LIST_HEAD(&neigh_node->list);
-
- memcpy(neigh_node->addr, neigh, ETH_ALEN);
- neigh_node->orig_node = orig_neigh_node;
- neigh_node->if_incoming = if_incoming;
-
- list_add_tail(&neigh_node->list, &orig_node->neigh_list);
- return neigh_node;
-}
-
-static void free_orig_node(void *data, void *arg)
-{
- struct list_head *list_pos, *list_pos_tmp;
- struct neigh_node *neigh_node;
- struct orig_node *orig_node = (struct orig_node *)data;
- struct bat_priv *bat_priv = (struct bat_priv *)arg;
-
- /* for all neighbors towards this originator ... */
- list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) {
- neigh_node = list_entry(list_pos, struct neigh_node, list);
-
- list_del(list_pos);
- kfree(neigh_node);
- }
-
- frag_list_free(&orig_node->frag_list);
- hna_global_del_orig(bat_priv, orig_node, "originator timed out");
-
- kfree(orig_node->bcast_own);
- kfree(orig_node->bcast_own_sum);
- kfree(orig_node);
-}
-
-void originator_free(struct bat_priv *bat_priv)
-{
- if (!bat_priv->orig_hash)
- return;
-
- cancel_delayed_work_sync(&bat_priv->orig_work);
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
- hash_delete(bat_priv->orig_hash, free_orig_node, bat_priv);
- bat_priv->orig_hash = NULL;
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-}
-
-/* this function finds or creates an originator entry for the given
- * address if it does not exits */
-struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr)
-{
- struct orig_node *orig_node;
- struct hashtable_t *swaphash;
- int size;
- int hash_added;
-
- orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
- compare_orig, choose_orig,
- addr));
-
- if (orig_node)
- return orig_node;
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Creating new originator: %pM\n", addr);
-
- orig_node = kzalloc(sizeof(struct orig_node), GFP_ATOMIC);
- if (!orig_node)
- return NULL;
-
- INIT_LIST_HEAD(&orig_node->neigh_list);
-
- memcpy(orig_node->orig, addr, ETH_ALEN);
- orig_node->router = NULL;
- orig_node->hna_buff = NULL;
- orig_node->bcast_seqno_reset = jiffies - 1
- - msecs_to_jiffies(RESET_PROTECTION_MS);
- orig_node->batman_seqno_reset = jiffies - 1
- - msecs_to_jiffies(RESET_PROTECTION_MS);
-
- size = bat_priv->num_ifaces * sizeof(TYPE_OF_WORD) * NUM_WORDS;
-
- orig_node->bcast_own = kzalloc(size, GFP_ATOMIC);
- if (!orig_node->bcast_own)
- goto free_orig_node;
-
- size = bat_priv->num_ifaces * sizeof(uint8_t);
- orig_node->bcast_own_sum = kzalloc(size, GFP_ATOMIC);
-
- INIT_LIST_HEAD(&orig_node->frag_list);
- orig_node->last_frag_packet = 0;
-
- if (!orig_node->bcast_own_sum)
- goto free_bcast_own;
-
- hash_added = hash_add(bat_priv->orig_hash, compare_orig, choose_orig,
- orig_node);
- if (hash_added < 0)
- goto free_bcast_own_sum;
-
- if (bat_priv->orig_hash->elements * 4 > bat_priv->orig_hash->size) {
- swaphash = hash_resize(bat_priv->orig_hash, choose_orig,
- bat_priv->orig_hash->size * 2);
-
- if (!swaphash)
- bat_dbg(DBG_BATMAN, bat_priv,
- "Couldn't resize orig hash table\n");
- else
- bat_priv->orig_hash = swaphash;
- }
-
- return orig_node;
-free_bcast_own_sum:
- kfree(orig_node->bcast_own_sum);
-free_bcast_own:
- kfree(orig_node->bcast_own);
-free_orig_node:
- kfree(orig_node);
- return NULL;
-}
-
-static bool purge_orig_neighbors(struct bat_priv *bat_priv,
- struct orig_node *orig_node,
- struct neigh_node **best_neigh_node)
-{
- struct list_head *list_pos, *list_pos_tmp;
- struct neigh_node *neigh_node;
- bool neigh_purged = false;
-
- *best_neigh_node = NULL;
-
- /* for all neighbors towards this originator ... */
- list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) {
- neigh_node = list_entry(list_pos, struct neigh_node, list);
-
- if ((time_after(jiffies,
- neigh_node->last_valid + PURGE_TIMEOUT * HZ)) ||
- (neigh_node->if_incoming->if_status == IF_INACTIVE) ||
- (neigh_node->if_incoming->if_status == IF_TO_BE_REMOVED)) {
-
- if (neigh_node->if_incoming->if_status ==
- IF_TO_BE_REMOVED)
- bat_dbg(DBG_BATMAN, bat_priv,
- "neighbor purge: originator %pM, "
- "neighbor: %pM, iface: %s\n",
- orig_node->orig, neigh_node->addr,
- neigh_node->if_incoming->net_dev->name);
- else
- bat_dbg(DBG_BATMAN, bat_priv,
- "neighbor timeout: originator %pM, "
- "neighbor: %pM, last_valid: %lu\n",
- orig_node->orig, neigh_node->addr,
- (neigh_node->last_valid / HZ));
-
- neigh_purged = true;
- list_del(list_pos);
- kfree(neigh_node);
- } else {
- if ((*best_neigh_node == NULL) ||
- (neigh_node->tq_avg > (*best_neigh_node)->tq_avg))
- *best_neigh_node = neigh_node;
- }
- }
- return neigh_purged;
-}
-
-static bool purge_orig_node(struct bat_priv *bat_priv,
- struct orig_node *orig_node)
-{
- struct neigh_node *best_neigh_node;
-
- if (time_after(jiffies,
- orig_node->last_valid + 2 * PURGE_TIMEOUT * HZ)) {
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Originator timeout: originator %pM, last_valid %lu\n",
- orig_node->orig, (orig_node->last_valid / HZ));
- return true;
- } else {
- if (purge_orig_neighbors(bat_priv, orig_node,
- &best_neigh_node)) {
- update_routes(bat_priv, orig_node,
- best_neigh_node,
- orig_node->hna_buff,
- orig_node->hna_buff_len);
- /* update bonding candidates, we could have lost
- * some candidates. */
- update_bonding_candidates(bat_priv, orig_node);
- }
- }
-
- return false;
-}
-
-static void _purge_orig(struct bat_priv *bat_priv)
-{
- HASHIT(hashit);
- struct element_t *bucket;
- struct orig_node *orig_node;
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
-
- /* for all origins... */
- while (hash_iterate(bat_priv->orig_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- orig_node = bucket->data;
-
- if (purge_orig_node(bat_priv, orig_node)) {
- if (orig_node->gw_flags)
- gw_node_delete(bat_priv, orig_node);
- hash_remove_bucket(bat_priv->orig_hash, &hashit);
- free_orig_node(orig_node, bat_priv);
- }
-
- if (time_after(jiffies, (orig_node->last_frag_packet +
- msecs_to_jiffies(FRAG_TIMEOUT))))
- frag_list_free(&orig_node->frag_list);
- }
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- gw_node_purge(bat_priv);
- gw_election(bat_priv);
-
- softif_neigh_purge(bat_priv);
-}
-
-static void purge_orig(struct work_struct *work)
-{
- struct delayed_work *delayed_work =
- container_of(work, struct delayed_work, work);
- struct bat_priv *bat_priv =
- container_of(delayed_work, struct bat_priv, orig_work);
-
- _purge_orig(bat_priv);
- start_purge_timer(bat_priv);
-}
-
-void purge_orig_ref(struct bat_priv *bat_priv)
-{
- _purge_orig(bat_priv);
-}
-
-int orig_seq_print_text(struct seq_file *seq, void *offset)
-{
- HASHIT(hashit);
- struct element_t *bucket;
- struct net_device *net_dev = (struct net_device *)seq->private;
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- struct orig_node *orig_node;
- struct neigh_node *neigh_node;
- int batman_count = 0;
- int last_seen_secs;
- int last_seen_msecs;
-
- if ((!bat_priv->primary_if) ||
- (bat_priv->primary_if->if_status != IF_ACTIVE)) {
- if (!bat_priv->primary_if)
- return seq_printf(seq, "BATMAN mesh %s disabled - "
- "please specify interfaces to enable it\n",
- net_dev->name);
-
- return seq_printf(seq, "BATMAN mesh %s "
- "disabled - primary interface not active\n",
- net_dev->name);
- }
-
- seq_printf(seq, "[B.A.T.M.A.N. adv %s%s, MainIF/MAC: %s/%pM (%s)]\n",
- SOURCE_VERSION, REVISION_VERSION_STR,
- bat_priv->primary_if->net_dev->name,
- bat_priv->primary_if->net_dev->dev_addr, net_dev->name);
- seq_printf(seq, " %-15s %s (%s/%i) %17s [%10s]: %20s ...\n",
- "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop",
- "outgoingIF", "Potential nexthops");
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
-
- while (hash_iterate(bat_priv->orig_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- orig_node = bucket->data;
-
- if (!orig_node->router)
- continue;
-
- if (orig_node->router->tq_avg == 0)
- continue;
-
- last_seen_secs = jiffies_to_msecs(jiffies -
- orig_node->last_valid) / 1000;
- last_seen_msecs = jiffies_to_msecs(jiffies -
- orig_node->last_valid) % 1000;
-
- seq_printf(seq, "%pM %4i.%03is (%3i) %pM [%10s]:",
- orig_node->orig, last_seen_secs, last_seen_msecs,
- orig_node->router->tq_avg, orig_node->router->addr,
- orig_node->router->if_incoming->net_dev->name);
-
- list_for_each_entry(neigh_node, &orig_node->neigh_list, list) {
- seq_printf(seq, " %pM (%3i)", neigh_node->addr,
- neigh_node->tq_avg);
- }
-
- seq_printf(seq, "\n");
- batman_count++;
- }
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- if ((batman_count == 0))
- seq_printf(seq, "No batman nodes in range ...\n");
-
- return 0;
-}
-
-static int orig_node_add_if(struct orig_node *orig_node, int max_if_num)
-{
- void *data_ptr;
-
- data_ptr = kmalloc(max_if_num * sizeof(TYPE_OF_WORD) * NUM_WORDS,
- GFP_ATOMIC);
- if (!data_ptr) {
- pr_err("Can't resize orig: out of memory\n");
- return -1;
- }
-
- memcpy(data_ptr, orig_node->bcast_own,
- (max_if_num - 1) * sizeof(TYPE_OF_WORD) * NUM_WORDS);
- kfree(orig_node->bcast_own);
- orig_node->bcast_own = data_ptr;
-
- data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
- if (!data_ptr) {
- pr_err("Can't resize orig: out of memory\n");
- return -1;
- }
-
- memcpy(data_ptr, orig_node->bcast_own_sum,
- (max_if_num - 1) * sizeof(uint8_t));
- kfree(orig_node->bcast_own_sum);
- orig_node->bcast_own_sum = data_ptr;
-
- return 0;
-}
-
-int orig_hash_add_if(struct batman_if *batman_if, int max_if_num)
-{
- struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
- struct orig_node *orig_node;
- HASHIT(hashit);
- struct element_t *bucket;
-
- /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
- * if_num */
- spin_lock_bh(&bat_priv->orig_hash_lock);
-
- while (hash_iterate(bat_priv->orig_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- orig_node = bucket->data;
-
- if (orig_node_add_if(orig_node, max_if_num) == -1)
- goto err;
- }
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return 0;
-
-err:
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return -ENOMEM;
-}
-
-static int orig_node_del_if(struct orig_node *orig_node,
- int max_if_num, int del_if_num)
-{
- void *data_ptr = NULL;
- int chunk_size;
-
- /* last interface was removed */
- if (max_if_num == 0)
- goto free_bcast_own;
-
- chunk_size = sizeof(TYPE_OF_WORD) * NUM_WORDS;
- data_ptr = kmalloc(max_if_num * chunk_size, GFP_ATOMIC);
- if (!data_ptr) {
- pr_err("Can't resize orig: out of memory\n");
- return -1;
- }
-
- /* copy first part */
- memcpy(data_ptr, orig_node->bcast_own, del_if_num * chunk_size);
-
- /* copy second part */
- memcpy(data_ptr + del_if_num * chunk_size,
- orig_node->bcast_own + ((del_if_num + 1) * chunk_size),
- (max_if_num - del_if_num) * chunk_size);
-
-free_bcast_own:
- kfree(orig_node->bcast_own);
- orig_node->bcast_own = data_ptr;
-
- if (max_if_num == 0)
- goto free_own_sum;
-
- data_ptr = kmalloc(max_if_num * sizeof(uint8_t), GFP_ATOMIC);
- if (!data_ptr) {
- pr_err("Can't resize orig: out of memory\n");
- return -1;
- }
-
- memcpy(data_ptr, orig_node->bcast_own_sum,
- del_if_num * sizeof(uint8_t));
-
- memcpy(data_ptr + del_if_num * sizeof(uint8_t),
- orig_node->bcast_own_sum + ((del_if_num + 1) * sizeof(uint8_t)),
- (max_if_num - del_if_num) * sizeof(uint8_t));
-
-free_own_sum:
- kfree(orig_node->bcast_own_sum);
- orig_node->bcast_own_sum = data_ptr;
-
- return 0;
-}
-
-int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
-{
- struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
- struct batman_if *batman_if_tmp;
- struct orig_node *orig_node;
- HASHIT(hashit);
- struct element_t *bucket;
- int ret;
-
- /* resize all orig nodes because orig_node->bcast_own(_sum) depend on
- * if_num */
- spin_lock_bh(&bat_priv->orig_hash_lock);
-
- while (hash_iterate(bat_priv->orig_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- orig_node = bucket->data;
-
- ret = orig_node_del_if(orig_node, max_if_num,
- batman_if->if_num);
-
- if (ret == -1)
- goto err;
- }
-
- /* renumber remaining batman interfaces _inside_ of orig_hash_lock */
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if_tmp, &if_list, list) {
- if (batman_if_tmp->if_status == IF_NOT_IN_USE)
- continue;
-
- if (batman_if == batman_if_tmp)
- continue;
-
- if (batman_if->soft_iface != batman_if_tmp->soft_iface)
- continue;
-
- if (batman_if_tmp->if_num > batman_if->if_num)
- batman_if_tmp->if_num--;
- }
- rcu_read_unlock();
-
- batman_if->if_num = -1;
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return 0;
-
-err:
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return -ENOMEM;
-}
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_ORIGINATOR_H_
-#define _NET_BATMAN_ADV_ORIGINATOR_H_
-
-int originator_init(struct bat_priv *bat_priv);
-void originator_free(struct bat_priv *bat_priv);
-void purge_orig_ref(struct bat_priv *bat_priv);
-struct orig_node *get_orig_node(struct bat_priv *bat_priv, uint8_t *addr);
-struct neigh_node *
-create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node,
- uint8_t *neigh, struct batman_if *if_incoming);
-int orig_seq_print_text(struct seq_file *seq, void *offset);
-int orig_hash_add_if(struct batman_if *batman_if, int max_if_num);
-int orig_hash_del_if(struct batman_if *batman_if, int max_if_num);
-
-
-/* returns 1 if they are the same originator */
-static inline int compare_orig(void *data1, void *data2)
-{
- return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
-}
-
-/* hashfunction to choose an entry in a hash table of given size */
-/* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */
-static inline int choose_orig(void *data, int32_t size)
-{
- unsigned char *key = data;
- uint32_t hash = 0;
- size_t i;
-
- for (i = 0; i < 6; i++) {
- hash += key[i];
- hash += (hash << 10);
- hash ^= (hash >> 6);
- }
-
- hash += (hash << 3);
- hash ^= (hash >> 11);
- hash += (hash << 15);
-
- return hash % size;
-}
-
-#endif /* _NET_BATMAN_ADV_ORIGINATOR_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_PACKET_H_
-#define _NET_BATMAN_ADV_PACKET_H_
-
-#define ETH_P_BATMAN 0x4305 /* unofficial/not registered Ethertype */
-
-#define BAT_PACKET 0x01
-#define BAT_ICMP 0x02
-#define BAT_UNICAST 0x03
-#define BAT_BCAST 0x04
-#define BAT_VIS 0x05
-#define BAT_UNICAST_FRAG 0x06
-
-/* this file is included by batctl which needs these defines */
-#define COMPAT_VERSION 12
-#define DIRECTLINK 0x40
-#define VIS_SERVER 0x20
-#define PRIMARIES_FIRST_HOP 0x10
-
-/* ICMP message types */
-#define ECHO_REPLY 0
-#define DESTINATION_UNREACHABLE 3
-#define ECHO_REQUEST 8
-#define TTL_EXCEEDED 11
-#define PARAMETER_PROBLEM 12
-
-/* vis defines */
-#define VIS_TYPE_SERVER_SYNC 0
-#define VIS_TYPE_CLIENT_UPDATE 1
-
-/* fragmentation defines */
-#define UNI_FRAG_HEAD 0x01
-
-struct batman_packet {
- uint8_t packet_type;
- uint8_t version; /* batman version field */
- uint8_t flags; /* 0x40: DIRECTLINK flag, 0x20 VIS_SERVER flag... */
- uint8_t tq;
- uint32_t seqno;
- uint8_t orig[6];
- uint8_t prev_sender[6];
- uint8_t ttl;
- uint8_t num_hna;
- uint8_t gw_flags; /* flags related to gateway class */
- uint8_t align;
-} __attribute__((packed));
-
-#define BAT_PACKET_LEN sizeof(struct batman_packet)
-
-struct icmp_packet {
- uint8_t packet_type;
- uint8_t version; /* batman version field */
- uint8_t msg_type; /* see ICMP message types above */
- uint8_t ttl;
- uint8_t dst[6];
- uint8_t orig[6];
- uint16_t seqno;
- uint8_t uid;
-} __attribute__((packed));
-
-#define BAT_RR_LEN 16
-
-/* icmp_packet_rr must start with all fields from imcp_packet
- * as this is assumed by code that handles ICMP packets */
-struct icmp_packet_rr {
- uint8_t packet_type;
- uint8_t version; /* batman version field */
- uint8_t msg_type; /* see ICMP message types above */
- uint8_t ttl;
- uint8_t dst[6];
- uint8_t orig[6];
- uint16_t seqno;
- uint8_t uid;
- uint8_t rr_cur;
- uint8_t rr[BAT_RR_LEN][ETH_ALEN];
-} __attribute__((packed));
-
-struct unicast_packet {
- uint8_t packet_type;
- uint8_t version; /* batman version field */
- uint8_t dest[6];
- uint8_t ttl;
-} __attribute__((packed));
-
-struct unicast_frag_packet {
- uint8_t packet_type;
- uint8_t version; /* batman version field */
- uint8_t dest[6];
- uint8_t ttl;
- uint8_t flags;
- uint8_t orig[6];
- uint16_t seqno;
-} __attribute__((packed));
-
-struct bcast_packet {
- uint8_t packet_type;
- uint8_t version; /* batman version field */
- uint8_t orig[6];
- uint8_t ttl;
- uint32_t seqno;
-} __attribute__((packed));
-
-struct vis_packet {
- uint8_t packet_type;
- uint8_t version; /* batman version field */
- uint8_t vis_type; /* which type of vis-participant sent this? */
- uint8_t entries; /* number of entries behind this struct */
- uint32_t seqno; /* sequence number */
- uint8_t ttl; /* TTL */
- uint8_t vis_orig[6]; /* originator that informs about its
- * neighbors */
- uint8_t target_orig[6]; /* who should receive this packet */
- uint8_t sender_orig[6]; /* who sent or rebroadcasted this packet */
-} __attribute__((packed));
-
-#endif /* _NET_BATMAN_ADV_PACKET_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "ring_buffer.h"
-
-void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value)
-{
- lq_recv[*lq_index] = value;
- *lq_index = (*lq_index + 1) % TQ_GLOBAL_WINDOW_SIZE;
-}
-
-uint8_t ring_buffer_avg(uint8_t lq_recv[])
-{
- uint8_t *ptr;
- uint16_t count = 0, i = 0, sum = 0;
-
- ptr = lq_recv;
-
- while (i < TQ_GLOBAL_WINDOW_SIZE) {
- if (*ptr != 0) {
- count++;
- sum += *ptr;
- }
-
- i++;
- ptr++;
- }
-
- if (count == 0)
- return 0;
-
- return (uint8_t)(sum / count);
-}
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_RING_BUFFER_H_
-#define _NET_BATMAN_ADV_RING_BUFFER_H_
-
-void ring_buffer_set(uint8_t lq_recv[], uint8_t *lq_index, uint8_t value);
-uint8_t ring_buffer_avg(uint8_t lq_recv[]);
-
-#endif /* _NET_BATMAN_ADV_RING_BUFFER_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "routing.h"
-#include "send.h"
-#include "hash.h"
-#include "soft-interface.h"
-#include "hard-interface.h"
-#include "icmp_socket.h"
-#include "translation-table.h"
-#include "originator.h"
-#include "types.h"
-#include "ring_buffer.h"
-#include "vis.h"
-#include "aggregation.h"
-#include "gateway_common.h"
-#include "gateway_client.h"
-#include "unicast.h"
-
-void slide_own_bcast_window(struct batman_if *batman_if)
-{
- struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
- HASHIT(hashit);
- struct element_t *bucket;
- struct orig_node *orig_node;
- TYPE_OF_WORD *word;
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
-
- while (hash_iterate(bat_priv->orig_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- orig_node = bucket->data;
- word = &(orig_node->bcast_own[batman_if->if_num * NUM_WORDS]);
-
- bit_get_packet(bat_priv, word, 1, 0);
- orig_node->bcast_own_sum[batman_if->if_num] =
- bit_packet_count(word);
- }
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-}
-
-static void update_HNA(struct bat_priv *bat_priv, struct orig_node *orig_node,
- unsigned char *hna_buff, int hna_buff_len)
-{
- if ((hna_buff_len != orig_node->hna_buff_len) ||
- ((hna_buff_len > 0) &&
- (orig_node->hna_buff_len > 0) &&
- (memcmp(orig_node->hna_buff, hna_buff, hna_buff_len) != 0))) {
-
- if (orig_node->hna_buff_len > 0)
- hna_global_del_orig(bat_priv, orig_node,
- "originator changed hna");
-
- if ((hna_buff_len > 0) && (hna_buff != NULL))
- hna_global_add_orig(bat_priv, orig_node,
- hna_buff, hna_buff_len);
- }
-}
-
-static void update_route(struct bat_priv *bat_priv,
- struct orig_node *orig_node,
- struct neigh_node *neigh_node,
- unsigned char *hna_buff, int hna_buff_len)
-{
- /* route deleted */
- if ((orig_node->router != NULL) && (neigh_node == NULL)) {
-
- bat_dbg(DBG_ROUTES, bat_priv, "Deleting route towards: %pM\n",
- orig_node->orig);
- hna_global_del_orig(bat_priv, orig_node,
- "originator timed out");
-
- /* route added */
- } else if ((orig_node->router == NULL) && (neigh_node != NULL)) {
-
- bat_dbg(DBG_ROUTES, bat_priv,
- "Adding route towards: %pM (via %pM)\n",
- orig_node->orig, neigh_node->addr);
- hna_global_add_orig(bat_priv, orig_node,
- hna_buff, hna_buff_len);
-
- /* route changed */
- } else {
- bat_dbg(DBG_ROUTES, bat_priv,
- "Changing route towards: %pM "
- "(now via %pM - was via %pM)\n",
- orig_node->orig, neigh_node->addr,
- orig_node->router->addr);
- }
-
- orig_node->router = neigh_node;
-}
-
-
-void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
- struct neigh_node *neigh_node, unsigned char *hna_buff,
- int hna_buff_len)
-{
-
- if (orig_node == NULL)
- return;
-
- if (orig_node->router != neigh_node)
- update_route(bat_priv, orig_node, neigh_node,
- hna_buff, hna_buff_len);
- /* may be just HNA changed */
- else
- update_HNA(bat_priv, orig_node, hna_buff, hna_buff_len);
-}
-
-static int is_bidirectional_neigh(struct orig_node *orig_node,
- struct orig_node *orig_neigh_node,
- struct batman_packet *batman_packet,
- struct batman_if *if_incoming)
-{
- struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
- struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
- unsigned char total_count;
-
- if (orig_node == orig_neigh_node) {
- list_for_each_entry(tmp_neigh_node,
- &orig_node->neigh_list,
- list) {
-
- if (compare_orig(tmp_neigh_node->addr,
- orig_neigh_node->orig) &&
- (tmp_neigh_node->if_incoming == if_incoming))
- neigh_node = tmp_neigh_node;
- }
-
- if (!neigh_node)
- neigh_node = create_neighbor(orig_node,
- orig_neigh_node,
- orig_neigh_node->orig,
- if_incoming);
- /* create_neighbor failed, return 0 */
- if (!neigh_node)
- return 0;
-
- neigh_node->last_valid = jiffies;
- } else {
- /* find packet count of corresponding one hop neighbor */
- list_for_each_entry(tmp_neigh_node,
- &orig_neigh_node->neigh_list, list) {
-
- if (compare_orig(tmp_neigh_node->addr,
- orig_neigh_node->orig) &&
- (tmp_neigh_node->if_incoming == if_incoming))
- neigh_node = tmp_neigh_node;
- }
-
- if (!neigh_node)
- neigh_node = create_neighbor(orig_neigh_node,
- orig_neigh_node,
- orig_neigh_node->orig,
- if_incoming);
- /* create_neighbor failed, return 0 */
- if (!neigh_node)
- return 0;
- }
-
- orig_node->last_valid = jiffies;
-
- /* pay attention to not get a value bigger than 100 % */
- total_count = (orig_neigh_node->bcast_own_sum[if_incoming->if_num] >
- neigh_node->real_packet_count ?
- neigh_node->real_packet_count :
- orig_neigh_node->bcast_own_sum[if_incoming->if_num]);
-
- /* if we have too few packets (too less data) we set tq_own to zero */
- /* if we receive too few packets it is not considered bidirectional */
- if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) ||
- (neigh_node->real_packet_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM))
- orig_neigh_node->tq_own = 0;
- else
- /* neigh_node->real_packet_count is never zero as we
- * only purge old information when getting new
- * information */
- orig_neigh_node->tq_own = (TQ_MAX_VALUE * total_count) /
- neigh_node->real_packet_count;
-
- /*
- * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE this does
- * affect the nearly-symmetric links only a little, but
- * punishes asymmetric links more. This will give a value
- * between 0 and TQ_MAX_VALUE
- */
- orig_neigh_node->tq_asym_penalty =
- TQ_MAX_VALUE -
- (TQ_MAX_VALUE *
- (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) *
- (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) *
- (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count)) /
- (TQ_LOCAL_WINDOW_SIZE *
- TQ_LOCAL_WINDOW_SIZE *
- TQ_LOCAL_WINDOW_SIZE);
-
- batman_packet->tq = ((batman_packet->tq *
- orig_neigh_node->tq_own *
- orig_neigh_node->tq_asym_penalty) /
- (TQ_MAX_VALUE * TQ_MAX_VALUE));
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "bidirectional: "
- "orig = %-15pM neigh = %-15pM => own_bcast = %2i, "
- "real recv = %2i, local tq: %3i, asym_penalty: %3i, "
- "total tq: %3i\n",
- orig_node->orig, orig_neigh_node->orig, total_count,
- neigh_node->real_packet_count, orig_neigh_node->tq_own,
- orig_neigh_node->tq_asym_penalty, batman_packet->tq);
-
- /* if link has the minimum required transmission quality
- * consider it bidirectional */
- if (batman_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT)
- return 1;
-
- return 0;
-}
-
-static void update_orig(struct bat_priv *bat_priv,
- struct orig_node *orig_node,
- struct ethhdr *ethhdr,
- struct batman_packet *batman_packet,
- struct batman_if *if_incoming,
- unsigned char *hna_buff, int hna_buff_len,
- char is_duplicate)
-{
- struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL;
- int tmp_hna_buff_len;
-
- bat_dbg(DBG_BATMAN, bat_priv, "update_originator(): "
- "Searching and updating originator entry of received packet\n");
-
- list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) {
- if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) &&
- (tmp_neigh_node->if_incoming == if_incoming)) {
- neigh_node = tmp_neigh_node;
- continue;
- }
-
- if (is_duplicate)
- continue;
-
- ring_buffer_set(tmp_neigh_node->tq_recv,
- &tmp_neigh_node->tq_index, 0);
- tmp_neigh_node->tq_avg =
- ring_buffer_avg(tmp_neigh_node->tq_recv);
- }
-
- if (!neigh_node) {
- struct orig_node *orig_tmp;
-
- orig_tmp = get_orig_node(bat_priv, ethhdr->h_source);
- if (!orig_tmp)
- return;
-
- neigh_node = create_neighbor(orig_node, orig_tmp,
- ethhdr->h_source, if_incoming);
- if (!neigh_node)
- return;
- } else
- bat_dbg(DBG_BATMAN, bat_priv,
- "Updating existing last-hop neighbor of originator\n");
-
- orig_node->flags = batman_packet->flags;
- neigh_node->last_valid = jiffies;
-
- ring_buffer_set(neigh_node->tq_recv,
- &neigh_node->tq_index,
- batman_packet->tq);
- neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv);
-
- if (!is_duplicate) {
- orig_node->last_ttl = batman_packet->ttl;
- neigh_node->last_ttl = batman_packet->ttl;
- }
-
- tmp_hna_buff_len = (hna_buff_len > batman_packet->num_hna * ETH_ALEN ?
- batman_packet->num_hna * ETH_ALEN : hna_buff_len);
-
- /* if this neighbor already is our next hop there is nothing
- * to change */
- if (orig_node->router == neigh_node)
- goto update_hna;
-
- /* if this neighbor does not offer a better TQ we won't consider it */
- if ((orig_node->router) &&
- (orig_node->router->tq_avg > neigh_node->tq_avg))
- goto update_hna;
-
- /* if the TQ is the same and the link not more symetric we
- * won't consider it either */
- if ((orig_node->router) &&
- ((neigh_node->tq_avg == orig_node->router->tq_avg) &&
- (orig_node->router->orig_node->bcast_own_sum[if_incoming->if_num]
- >= neigh_node->orig_node->bcast_own_sum[if_incoming->if_num])))
- goto update_hna;
-
- update_routes(bat_priv, orig_node, neigh_node,
- hna_buff, tmp_hna_buff_len);
- goto update_gw;
-
-update_hna:
- update_routes(bat_priv, orig_node, orig_node->router,
- hna_buff, tmp_hna_buff_len);
-
-update_gw:
- if (orig_node->gw_flags != batman_packet->gw_flags)
- gw_node_update(bat_priv, orig_node, batman_packet->gw_flags);
-
- orig_node->gw_flags = batman_packet->gw_flags;
-
- /* restart gateway selection if fast or late switching was enabled */
- if ((orig_node->gw_flags) &&
- (atomic_read(&bat_priv->gw_mode) == GW_MODE_CLIENT) &&
- (atomic_read(&bat_priv->gw_sel_class) > 2))
- gw_check_election(bat_priv, orig_node);
-}
-
-/* checks whether the host restarted and is in the protection time.
- * returns:
- * 0 if the packet is to be accepted
- * 1 if the packet is to be ignored.
- */
-static int window_protected(struct bat_priv *bat_priv,
- int32_t seq_num_diff,
- unsigned long *last_reset)
-{
- if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE)
- || (seq_num_diff >= EXPECTED_SEQNO_RANGE)) {
- if (time_after(jiffies, *last_reset +
- msecs_to_jiffies(RESET_PROTECTION_MS))) {
-
- *last_reset = jiffies;
- bat_dbg(DBG_BATMAN, bat_priv,
- "old packet received, start protection\n");
-
- return 0;
- } else
- return 1;
- }
- return 0;
-}
-
-/* processes a batman packet for all interfaces, adjusts the sequence number and
- * finds out whether it is a duplicate.
- * returns:
- * 1 the packet is a duplicate
- * 0 the packet has not yet been received
- * -1 the packet is old and has been received while the seqno window
- * was protected. Caller should drop it.
- */
-static char count_real_packets(struct ethhdr *ethhdr,
- struct batman_packet *batman_packet,
- struct batman_if *if_incoming)
-{
- struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
- struct orig_node *orig_node;
- struct neigh_node *tmp_neigh_node;
- char is_duplicate = 0;
- int32_t seq_diff;
- int need_update = 0;
- int set_mark;
-
- orig_node = get_orig_node(bat_priv, batman_packet->orig);
- if (orig_node == NULL)
- return 0;
-
- seq_diff = batman_packet->seqno - orig_node->last_real_seqno;
-
- /* signalize caller that the packet is to be dropped. */
- if (window_protected(bat_priv, seq_diff,
- &orig_node->batman_seqno_reset))
- return -1;
-
- list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) {
-
- is_duplicate |= get_bit_status(tmp_neigh_node->real_bits,
- orig_node->last_real_seqno,
- batman_packet->seqno);
-
- if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) &&
- (tmp_neigh_node->if_incoming == if_incoming))
- set_mark = 1;
- else
- set_mark = 0;
-
- /* if the window moved, set the update flag. */
- need_update |= bit_get_packet(bat_priv,
- tmp_neigh_node->real_bits,
- seq_diff, set_mark);
-
- tmp_neigh_node->real_packet_count =
- bit_packet_count(tmp_neigh_node->real_bits);
- }
-
- if (need_update) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "updating last_seqno: old %d, new %d\n",
- orig_node->last_real_seqno, batman_packet->seqno);
- orig_node->last_real_seqno = batman_packet->seqno;
- }
-
- return is_duplicate;
-}
-
-/* copy primary address for bonding */
-static void mark_bonding_address(struct bat_priv *bat_priv,
- struct orig_node *orig_node,
- struct orig_node *orig_neigh_node,
- struct batman_packet *batman_packet)
-
-{
- if (batman_packet->flags & PRIMARIES_FIRST_HOP)
- memcpy(orig_neigh_node->primary_addr,
- orig_node->orig, ETH_ALEN);
-
- return;
-}
-
-/* mark possible bond.candidates in the neighbor list */
-void update_bonding_candidates(struct bat_priv *bat_priv,
- struct orig_node *orig_node)
-{
- int candidates;
- int interference_candidate;
- int best_tq;
- struct neigh_node *tmp_neigh_node, *tmp_neigh_node2;
- struct neigh_node *first_candidate, *last_candidate;
-
- /* update the candidates for this originator */
- if (!orig_node->router) {
- orig_node->bond.candidates = 0;
- return;
- }
-
- best_tq = orig_node->router->tq_avg;
-
- /* update bond.candidates */
-
- candidates = 0;
-
- /* mark other nodes which also received "PRIMARIES FIRST HOP" packets
- * as "bonding partner" */
-
- /* first, zero the list */
- list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) {
- tmp_neigh_node->next_bond_candidate = NULL;
- }
-
- first_candidate = NULL;
- last_candidate = NULL;
- list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) {
-
- /* only consider if it has the same primary address ... */
- if (memcmp(orig_node->orig,
- tmp_neigh_node->orig_node->primary_addr,
- ETH_ALEN) != 0)
- continue;
-
- /* ... and is good enough to be considered */
- if (tmp_neigh_node->tq_avg < best_tq - BONDING_TQ_THRESHOLD)
- continue;
-
- /* check if we have another candidate with the same
- * mac address or interface. If we do, we won't
- * select this candidate because of possible interference. */
-
- interference_candidate = 0;
- list_for_each_entry(tmp_neigh_node2,
- &orig_node->neigh_list, list) {
-
- if (tmp_neigh_node2 == tmp_neigh_node)
- continue;
-
- /* we only care if the other candidate is even
- * considered as candidate. */
- if (tmp_neigh_node2->next_bond_candidate == NULL)
- continue;
-
-
- if ((tmp_neigh_node->if_incoming ==
- tmp_neigh_node2->if_incoming)
- || (memcmp(tmp_neigh_node->addr,
- tmp_neigh_node2->addr, ETH_ALEN) == 0)) {
-
- interference_candidate = 1;
- break;
- }
- }
- /* don't care further if it is an interference candidate */
- if (interference_candidate)
- continue;
-
- if (first_candidate == NULL) {
- first_candidate = tmp_neigh_node;
- tmp_neigh_node->next_bond_candidate = first_candidate;
- } else
- tmp_neigh_node->next_bond_candidate = last_candidate;
-
- last_candidate = tmp_neigh_node;
-
- candidates++;
- }
-
- if (candidates > 0) {
- first_candidate->next_bond_candidate = last_candidate;
- orig_node->bond.selected = first_candidate;
- }
-
- orig_node->bond.candidates = candidates;
-}
-
-void receive_bat_packet(struct ethhdr *ethhdr,
- struct batman_packet *batman_packet,
- unsigned char *hna_buff, int hna_buff_len,
- struct batman_if *if_incoming)
-{
- struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
- struct batman_if *batman_if;
- struct orig_node *orig_neigh_node, *orig_node;
- char has_directlink_flag;
- char is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0;
- char is_broadcast = 0, is_bidirectional, is_single_hop_neigh;
- char is_duplicate;
- uint32_t if_incoming_seqno;
-
- /* Silently drop when the batman packet is actually not a
- * correct packet.
- *
- * This might happen if a packet is padded (e.g. Ethernet has a
- * minimum frame length of 64 byte) and the aggregation interprets
- * it as an additional length.
- *
- * TODO: A more sane solution would be to have a bit in the
- * batman_packet to detect whether the packet is the last
- * packet in an aggregation. Here we expect that the padding
- * is always zero (or not 0x01)
- */
- if (batman_packet->packet_type != BAT_PACKET)
- return;
-
- /* could be changed by schedule_own_packet() */
- if_incoming_seqno = atomic_read(&if_incoming->seqno);
-
- has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0);
-
- is_single_hop_neigh = (compare_orig(ethhdr->h_source,
- batman_packet->orig) ? 1 : 0);
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Received BATMAN packet via NB: %pM, IF: %s [%pM] "
- "(from OG: %pM, via prev OG: %pM, seqno %d, tq %d, "
- "TTL %d, V %d, IDF %d)\n",
- ethhdr->h_source, if_incoming->net_dev->name,
- if_incoming->net_dev->dev_addr, batman_packet->orig,
- batman_packet->prev_sender, batman_packet->seqno,
- batman_packet->tq, batman_packet->ttl, batman_packet->version,
- has_directlink_flag);
-
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if (batman_if->if_status != IF_ACTIVE)
- continue;
-
- if (batman_if->soft_iface != if_incoming->soft_iface)
- continue;
-
- if (compare_orig(ethhdr->h_source,
- batman_if->net_dev->dev_addr))
- is_my_addr = 1;
-
- if (compare_orig(batman_packet->orig,
- batman_if->net_dev->dev_addr))
- is_my_orig = 1;
-
- if (compare_orig(batman_packet->prev_sender,
- batman_if->net_dev->dev_addr))
- is_my_oldorig = 1;
-
- if (compare_orig(ethhdr->h_source, broadcast_addr))
- is_broadcast = 1;
- }
- rcu_read_unlock();
-
- if (batman_packet->version != COMPAT_VERSION) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: incompatible batman version (%i)\n",
- batman_packet->version);
- return;
- }
-
- if (is_my_addr) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: received my own broadcast (sender: %pM"
- ")\n",
- ethhdr->h_source);
- return;
- }
-
- if (is_broadcast) {
- bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
- "ignoring all packets with broadcast source addr (sender: %pM"
- ")\n", ethhdr->h_source);
- return;
- }
-
- if (is_my_orig) {
- TYPE_OF_WORD *word;
- int offset;
-
- orig_neigh_node = get_orig_node(bat_priv, ethhdr->h_source);
-
- if (!orig_neigh_node)
- return;
-
- /* neighbor has to indicate direct link and it has to
- * come via the corresponding interface */
- /* if received seqno equals last send seqno save new
- * seqno for bidirectional check */
- if (has_directlink_flag &&
- compare_orig(if_incoming->net_dev->dev_addr,
- batman_packet->orig) &&
- (batman_packet->seqno - if_incoming_seqno + 2 == 0)) {
- offset = if_incoming->if_num * NUM_WORDS;
- word = &(orig_neigh_node->bcast_own[offset]);
- bit_mark(word, 0);
- orig_neigh_node->bcast_own_sum[if_incoming->if_num] =
- bit_packet_count(word);
- }
-
- bat_dbg(DBG_BATMAN, bat_priv, "Drop packet: "
- "originator packet from myself (via neighbor)\n");
- return;
- }
-
- if (is_my_oldorig) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: ignoring all rebroadcast echos (sender: "
- "%pM)\n", ethhdr->h_source);
- return;
- }
-
- orig_node = get_orig_node(bat_priv, batman_packet->orig);
- if (orig_node == NULL)
- return;
-
- is_duplicate = count_real_packets(ethhdr, batman_packet, if_incoming);
-
- if (is_duplicate == -1) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: packet within seqno protection time "
- "(sender: %pM)\n", ethhdr->h_source);
- return;
- }
-
- if (batman_packet->tq == 0) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: originator packet with tq equal 0\n");
- return;
- }
-
- /* avoid temporary routing loops */
- if ((orig_node->router) &&
- (orig_node->router->orig_node->router) &&
- (compare_orig(orig_node->router->addr,
- batman_packet->prev_sender)) &&
- !(compare_orig(batman_packet->orig, batman_packet->prev_sender)) &&
- (compare_orig(orig_node->router->addr,
- orig_node->router->orig_node->router->addr))) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: ignoring all rebroadcast packets that "
- "may make me loop (sender: %pM)\n", ethhdr->h_source);
- return;
- }
-
- /* if sender is a direct neighbor the sender mac equals
- * originator mac */
- orig_neigh_node = (is_single_hop_neigh ?
- orig_node :
- get_orig_node(bat_priv, ethhdr->h_source));
- if (orig_neigh_node == NULL)
- return;
-
- /* drop packet if sender is not a direct neighbor and if we
- * don't route towards it */
- if (!is_single_hop_neigh &&
- (orig_neigh_node->router == NULL)) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: OGM via unknown neighbor!\n");
- return;
- }
-
- is_bidirectional = is_bidirectional_neigh(orig_node, orig_neigh_node,
- batman_packet, if_incoming);
-
- /* update ranking if it is not a duplicate or has the same
- * seqno and similar ttl as the non-duplicate */
- if (is_bidirectional &&
- (!is_duplicate ||
- ((orig_node->last_real_seqno == batman_packet->seqno) &&
- (orig_node->last_ttl - 3 <= batman_packet->ttl))))
- update_orig(bat_priv, orig_node, ethhdr, batman_packet,
- if_incoming, hna_buff, hna_buff_len, is_duplicate);
-
- mark_bonding_address(bat_priv, orig_node,
- orig_neigh_node, batman_packet);
- update_bonding_candidates(bat_priv, orig_node);
-
- /* is single hop (direct) neighbor */
- if (is_single_hop_neigh) {
-
- /* mark direct link on incoming interface */
- schedule_forward_packet(orig_node, ethhdr, batman_packet,
- 1, hna_buff_len, if_incoming);
-
- bat_dbg(DBG_BATMAN, bat_priv, "Forwarding packet: "
- "rebroadcast neighbor packet with direct link flag\n");
- return;
- }
-
- /* multihop originator */
- if (!is_bidirectional) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: not received via bidirectional link\n");
- return;
- }
-
- if (is_duplicate) {
- bat_dbg(DBG_BATMAN, bat_priv,
- "Drop packet: duplicate packet received\n");
- return;
- }
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Forwarding packet: rebroadcast originator packet\n");
- schedule_forward_packet(orig_node, ethhdr, batman_packet,
- 0, hna_buff_len, if_incoming);
-}
-
-int recv_bat_packet(struct sk_buff *skb, struct batman_if *batman_if)
-{
- struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
- struct ethhdr *ethhdr;
-
- /* drop packet if it has not necessary minimum size */
- if (unlikely(!pskb_may_pull(skb, sizeof(struct batman_packet))))
- return NET_RX_DROP;
-
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- /* packet with broadcast indication but unicast recipient */
- if (!is_broadcast_ether_addr(ethhdr->h_dest))
- return NET_RX_DROP;
-
- /* packet with broadcast sender address */
- if (is_broadcast_ether_addr(ethhdr->h_source))
- return NET_RX_DROP;
-
- /* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, 0) < 0)
- return NET_RX_DROP;
-
- /* keep skb linear */
- if (skb_linearize(skb) < 0)
- return NET_RX_DROP;
-
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
- receive_aggr_bat_packet(ethhdr,
- skb->data,
- skb_headlen(skb),
- batman_if);
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- kfree_skb(skb);
- return NET_RX_SUCCESS;
-}
-
-static int recv_my_icmp_packet(struct bat_priv *bat_priv,
- struct sk_buff *skb, size_t icmp_len)
-{
- struct orig_node *orig_node;
- struct icmp_packet_rr *icmp_packet;
- struct ethhdr *ethhdr;
- struct batman_if *batman_if;
- int ret;
- uint8_t dstaddr[ETH_ALEN];
-
- icmp_packet = (struct icmp_packet_rr *)skb->data;
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- /* add data to device queue */
- if (icmp_packet->msg_type != ECHO_REQUEST) {
- bat_socket_receive_packet(icmp_packet, icmp_len);
- return NET_RX_DROP;
- }
-
- if (!bat_priv->primary_if)
- return NET_RX_DROP;
-
- /* answer echo request (ping) */
- /* get routing information */
- spin_lock_bh(&bat_priv->orig_hash_lock);
- orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
- compare_orig, choose_orig,
- icmp_packet->orig));
- ret = NET_RX_DROP;
-
- if ((orig_node != NULL) &&
- (orig_node->router != NULL)) {
-
- /* don't lock while sending the packets ... we therefore
- * copy the required data before sending */
- batman_if = orig_node->router->if_incoming;
- memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- /* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
- return NET_RX_DROP;
-
- icmp_packet = (struct icmp_packet_rr *)skb->data;
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN);
- memcpy(icmp_packet->orig,
- bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
- icmp_packet->msg_type = ECHO_REPLY;
- icmp_packet->ttl = TTL;
-
- send_skb_packet(skb, batman_if, dstaddr);
- ret = NET_RX_SUCCESS;
-
- } else
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- return ret;
-}
-
-static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv,
- struct sk_buff *skb, size_t icmp_len)
-{
- struct orig_node *orig_node;
- struct icmp_packet *icmp_packet;
- struct ethhdr *ethhdr;
- struct batman_if *batman_if;
- int ret;
- uint8_t dstaddr[ETH_ALEN];
-
- icmp_packet = (struct icmp_packet *)skb->data;
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- /* send TTL exceeded if packet is an echo request (traceroute) */
- if (icmp_packet->msg_type != ECHO_REQUEST) {
- pr_debug("Warning - can't forward icmp packet from %pM to "
- "%pM: ttl exceeded\n", icmp_packet->orig,
- icmp_packet->dst);
- return NET_RX_DROP;
- }
-
- if (!bat_priv->primary_if)
- return NET_RX_DROP;
-
- /* get routing information */
- spin_lock_bh(&bat_priv->orig_hash_lock);
- orig_node = ((struct orig_node *)
- hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
- icmp_packet->orig));
- ret = NET_RX_DROP;
-
- if ((orig_node != NULL) &&
- (orig_node->router != NULL)) {
-
- /* don't lock while sending the packets ... we therefore
- * copy the required data before sending */
- batman_if = orig_node->router->if_incoming;
- memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- /* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
- return NET_RX_DROP;
-
- icmp_packet = (struct icmp_packet *) skb->data;
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN);
- memcpy(icmp_packet->orig,
- bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
- icmp_packet->msg_type = TTL_EXCEEDED;
- icmp_packet->ttl = TTL;
-
- send_skb_packet(skb, batman_if, dstaddr);
- ret = NET_RX_SUCCESS;
-
- } else
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- return ret;
-}
-
-
-int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if)
-{
- struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
- struct icmp_packet_rr *icmp_packet;
- struct ethhdr *ethhdr;
- struct orig_node *orig_node;
- struct batman_if *batman_if;
- int hdr_size = sizeof(struct icmp_packet);
- int ret;
- uint8_t dstaddr[ETH_ALEN];
-
- /**
- * we truncate all incoming icmp packets if they don't match our size
- */
- if (skb->len >= sizeof(struct icmp_packet_rr))
- hdr_size = sizeof(struct icmp_packet_rr);
-
- /* drop packet if it has not necessary minimum size */
- if (unlikely(!pskb_may_pull(skb, hdr_size)))
- return NET_RX_DROP;
-
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- /* packet with unicast indication but broadcast recipient */
- if (is_broadcast_ether_addr(ethhdr->h_dest))
- return NET_RX_DROP;
-
- /* packet with broadcast sender address */
- if (is_broadcast_ether_addr(ethhdr->h_source))
- return NET_RX_DROP;
-
- /* not for me */
- if (!is_my_mac(ethhdr->h_dest))
- return NET_RX_DROP;
-
- icmp_packet = (struct icmp_packet_rr *)skb->data;
-
- /* add record route information if not full */
- if ((hdr_size == sizeof(struct icmp_packet_rr)) &&
- (icmp_packet->rr_cur < BAT_RR_LEN)) {
- memcpy(&(icmp_packet->rr[icmp_packet->rr_cur]),
- ethhdr->h_dest, ETH_ALEN);
- icmp_packet->rr_cur++;
- }
-
- /* packet for me */
- if (is_my_mac(icmp_packet->dst))
- return recv_my_icmp_packet(bat_priv, skb, hdr_size);
-
- /* TTL exceeded */
- if (icmp_packet->ttl < 2)
- return recv_icmp_ttl_exceeded(bat_priv, skb, hdr_size);
-
- ret = NET_RX_DROP;
-
- /* get routing information */
- spin_lock_bh(&bat_priv->orig_hash_lock);
- orig_node = ((struct orig_node *)
- hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
- icmp_packet->dst));
-
- if ((orig_node != NULL) &&
- (orig_node->router != NULL)) {
-
- /* don't lock while sending the packets ... we therefore
- * copy the required data before sending */
- batman_if = orig_node->router->if_incoming;
- memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- /* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
- return NET_RX_DROP;
-
- icmp_packet = (struct icmp_packet_rr *)skb->data;
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- /* decrement ttl */
- icmp_packet->ttl--;
-
- /* route it */
- send_skb_packet(skb, batman_if, dstaddr);
- ret = NET_RX_SUCCESS;
-
- } else
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- return ret;
-}
-
-/* find a suitable router for this originator, and use
- * bonding if possible. */
-struct neigh_node *find_router(struct bat_priv *bat_priv,
- struct orig_node *orig_node,
- struct batman_if *recv_if)
-{
- struct orig_node *primary_orig_node;
- struct orig_node *router_orig;
- struct neigh_node *router, *first_candidate, *best_router;
- static uint8_t zero_mac[ETH_ALEN] = {0, 0, 0, 0, 0, 0};
- int bonding_enabled;
-
- if (!orig_node)
- return NULL;
-
- if (!orig_node->router)
- return NULL;
-
- /* without bonding, the first node should
- * always choose the default router. */
-
- bonding_enabled = atomic_read(&bat_priv->bonding);
-
- if ((!recv_if) && (!bonding_enabled))
- return orig_node->router;
-
- router_orig = orig_node->router->orig_node;
-
- /* if we have something in the primary_addr, we can search
- * for a potential bonding candidate. */
- if (memcmp(router_orig->primary_addr, zero_mac, ETH_ALEN) == 0)
- return orig_node->router;
-
- /* find the orig_node which has the primary interface. might
- * even be the same as our router_orig in many cases */
-
- if (memcmp(router_orig->primary_addr,
- router_orig->orig, ETH_ALEN) == 0) {
- primary_orig_node = router_orig;
- } else {
- primary_orig_node = hash_find(bat_priv->orig_hash, compare_orig,
- choose_orig,
- router_orig->primary_addr);
-
- if (!primary_orig_node)
- return orig_node->router;
- }
-
- /* with less than 2 candidates, we can't do any
- * bonding and prefer the original router. */
-
- if (primary_orig_node->bond.candidates < 2)
- return orig_node->router;
-
-
- /* all nodes between should choose a candidate which
- * is is not on the interface where the packet came
- * in. */
- first_candidate = primary_orig_node->bond.selected;
- router = first_candidate;
-
- if (bonding_enabled) {
- /* in the bonding case, send the packets in a round
- * robin fashion over the remaining interfaces. */
- do {
- /* recv_if == NULL on the first node. */
- if (router->if_incoming != recv_if)
- break;
-
- router = router->next_bond_candidate;
- } while (router != first_candidate);
-
- primary_orig_node->bond.selected = router->next_bond_candidate;
-
- } else {
- /* if bonding is disabled, use the best of the
- * remaining candidates which are not using
- * this interface. */
- best_router = first_candidate;
-
- do {
- /* recv_if == NULL on the first node. */
- if ((router->if_incoming != recv_if) &&
- (router->tq_avg > best_router->tq_avg))
- best_router = router;
-
- router = router->next_bond_candidate;
- } while (router != first_candidate);
-
- router = best_router;
- }
-
- return router;
-}
-
-static int check_unicast_packet(struct sk_buff *skb, int hdr_size)
-{
- struct ethhdr *ethhdr;
-
- /* drop packet if it has not necessary minimum size */
- if (unlikely(!pskb_may_pull(skb, hdr_size)))
- return -1;
-
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- /* packet with unicast indication but broadcast recipient */
- if (is_broadcast_ether_addr(ethhdr->h_dest))
- return -1;
-
- /* packet with broadcast sender address */
- if (is_broadcast_ether_addr(ethhdr->h_source))
- return -1;
-
- /* not for me */
- if (!is_my_mac(ethhdr->h_dest))
- return -1;
-
- return 0;
-}
-
-int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if,
- int hdr_size)
-{
- struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
- struct orig_node *orig_node;
- struct neigh_node *router;
- struct batman_if *batman_if;
- uint8_t dstaddr[ETH_ALEN];
- struct unicast_packet *unicast_packet;
- struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb);
- int ret;
- struct sk_buff *new_skb;
-
- unicast_packet = (struct unicast_packet *)skb->data;
-
- /* TTL exceeded */
- if (unicast_packet->ttl < 2) {
- pr_debug("Warning - can't forward unicast packet from %pM to "
- "%pM: ttl exceeded\n", ethhdr->h_source,
- unicast_packet->dest);
- return NET_RX_DROP;
- }
-
- /* get routing information */
- spin_lock_bh(&bat_priv->orig_hash_lock);
- orig_node = ((struct orig_node *)
- hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
- unicast_packet->dest));
-
- router = find_router(bat_priv, orig_node, recv_if);
-
- if (!router) {
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return NET_RX_DROP;
- }
-
- /* don't lock while sending the packets ... we therefore
- * copy the required data before sending */
-
- batman_if = router->if_incoming;
- memcpy(dstaddr, router->addr, ETH_ALEN);
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- /* create a copy of the skb, if needed, to modify it. */
- if (skb_cow(skb, sizeof(struct ethhdr)) < 0)
- return NET_RX_DROP;
-
- unicast_packet = (struct unicast_packet *)skb->data;
-
- if (unicast_packet->packet_type == BAT_UNICAST &&
- atomic_read(&bat_priv->fragmentation) &&
- skb->len > batman_if->net_dev->mtu)
- return frag_send_skb(skb, bat_priv, batman_if,
- dstaddr);
-
- if (unicast_packet->packet_type == BAT_UNICAST_FRAG &&
- 2 * skb->len - hdr_size <= batman_if->net_dev->mtu) {
-
- ret = frag_reassemble_skb(skb, bat_priv, &new_skb);
-
- if (ret == NET_RX_DROP)
- return NET_RX_DROP;
-
- /* packet was buffered for late merge */
- if (!new_skb)
- return NET_RX_SUCCESS;
-
- skb = new_skb;
- unicast_packet = (struct unicast_packet *)skb->data;
- }
-
- /* decrement ttl */
- unicast_packet->ttl--;
-
- /* route it */
- send_skb_packet(skb, batman_if, dstaddr);
-
- return NET_RX_SUCCESS;
-}
-
-int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if)
-{
- struct unicast_packet *unicast_packet;
- int hdr_size = sizeof(struct unicast_packet);
-
- if (check_unicast_packet(skb, hdr_size) < 0)
- return NET_RX_DROP;
-
- unicast_packet = (struct unicast_packet *)skb->data;
-
- /* packet for me */
- if (is_my_mac(unicast_packet->dest)) {
- interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size);
- return NET_RX_SUCCESS;
- }
-
- return route_unicast_packet(skb, recv_if, hdr_size);
-}
-
-int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if)
-{
- struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
- struct unicast_frag_packet *unicast_packet;
- int hdr_size = sizeof(struct unicast_frag_packet);
- struct sk_buff *new_skb = NULL;
- int ret;
-
- if (check_unicast_packet(skb, hdr_size) < 0)
- return NET_RX_DROP;
-
- unicast_packet = (struct unicast_frag_packet *)skb->data;
-
- /* packet for me */
- if (is_my_mac(unicast_packet->dest)) {
-
- ret = frag_reassemble_skb(skb, bat_priv, &new_skb);
-
- if (ret == NET_RX_DROP)
- return NET_RX_DROP;
-
- /* packet was buffered for late merge */
- if (!new_skb)
- return NET_RX_SUCCESS;
-
- interface_rx(recv_if->soft_iface, new_skb, recv_if,
- sizeof(struct unicast_packet));
- return NET_RX_SUCCESS;
- }
-
- return route_unicast_packet(skb, recv_if, hdr_size);
-}
-
-
-int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if)
-{
- struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
- struct orig_node *orig_node;
- struct bcast_packet *bcast_packet;
- struct ethhdr *ethhdr;
- int hdr_size = sizeof(struct bcast_packet);
- int32_t seq_diff;
-
- /* drop packet if it has not necessary minimum size */
- if (unlikely(!pskb_may_pull(skb, hdr_size)))
- return NET_RX_DROP;
-
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- /* packet with broadcast indication but unicast recipient */
- if (!is_broadcast_ether_addr(ethhdr->h_dest))
- return NET_RX_DROP;
-
- /* packet with broadcast sender address */
- if (is_broadcast_ether_addr(ethhdr->h_source))
- return NET_RX_DROP;
-
- /* ignore broadcasts sent by myself */
- if (is_my_mac(ethhdr->h_source))
- return NET_RX_DROP;
-
- bcast_packet = (struct bcast_packet *)skb->data;
-
- /* ignore broadcasts originated by myself */
- if (is_my_mac(bcast_packet->orig))
- return NET_RX_DROP;
-
- if (bcast_packet->ttl < 2)
- return NET_RX_DROP;
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
- orig_node = ((struct orig_node *)
- hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
- bcast_packet->orig));
-
- if (orig_node == NULL) {
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return NET_RX_DROP;
- }
-
- /* check whether the packet is a duplicate */
- if (get_bit_status(orig_node->bcast_bits,
- orig_node->last_bcast_seqno,
- ntohl(bcast_packet->seqno))) {
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return NET_RX_DROP;
- }
-
- seq_diff = ntohl(bcast_packet->seqno) - orig_node->last_bcast_seqno;
-
- /* check whether the packet is old and the host just restarted. */
- if (window_protected(bat_priv, seq_diff,
- &orig_node->bcast_seqno_reset)) {
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return NET_RX_DROP;
- }
-
- /* mark broadcast in flood history, update window position
- * if required. */
- if (bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1))
- orig_node->last_bcast_seqno = ntohl(bcast_packet->seqno);
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- /* rebroadcast packet */
- add_bcast_packet_to_list(bat_priv, skb);
-
- /* broadcast for me */
- interface_rx(recv_if->soft_iface, skb, recv_if, hdr_size);
-
- return NET_RX_SUCCESS;
-}
-
-int recv_vis_packet(struct sk_buff *skb, struct batman_if *recv_if)
-{
- struct vis_packet *vis_packet;
- struct ethhdr *ethhdr;
- struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
- int hdr_size = sizeof(struct vis_packet);
-
- /* keep skb linear */
- if (skb_linearize(skb) < 0)
- return NET_RX_DROP;
-
- if (unlikely(!pskb_may_pull(skb, hdr_size)))
- return NET_RX_DROP;
-
- vis_packet = (struct vis_packet *)skb->data;
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- /* not for me */
- if (!is_my_mac(ethhdr->h_dest))
- return NET_RX_DROP;
-
- /* ignore own packets */
- if (is_my_mac(vis_packet->vis_orig))
- return NET_RX_DROP;
-
- if (is_my_mac(vis_packet->sender_orig))
- return NET_RX_DROP;
-
- switch (vis_packet->vis_type) {
- case VIS_TYPE_SERVER_SYNC:
- receive_server_sync_packet(bat_priv, vis_packet,
- skb_headlen(skb));
- break;
-
- case VIS_TYPE_CLIENT_UPDATE:
- receive_client_update_packet(bat_priv, vis_packet,
- skb_headlen(skb));
- break;
-
- default: /* ignore unknown packet */
- break;
- }
-
- /* We take a copy of the data in the packet, so we should
- always free the skbuf. */
- return NET_RX_DROP;
-}
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_ROUTING_H_
-#define _NET_BATMAN_ADV_ROUTING_H_
-
-#include "types.h"
-
-void slide_own_bcast_window(struct batman_if *batman_if);
-void receive_bat_packet(struct ethhdr *ethhdr,
- struct batman_packet *batman_packet,
- unsigned char *hna_buff, int hna_buff_len,
- struct batman_if *if_incoming);
-void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node,
- struct neigh_node *neigh_node, unsigned char *hna_buff,
- int hna_buff_len);
-int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if,
- int hdr_size);
-int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if);
-int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if);
-int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if);
-int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if);
-int recv_vis_packet(struct sk_buff *skb, struct batman_if *recv_if);
-int recv_bat_packet(struct sk_buff *skb, struct batman_if *recv_if);
-struct neigh_node *find_router(struct bat_priv *bat_priv,
- struct orig_node *orig_node, struct batman_if *recv_if);
-void update_bonding_candidates(struct bat_priv *bat_priv,
- struct orig_node *orig_node);
-
-#endif /* _NET_BATMAN_ADV_ROUTING_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "send.h"
-#include "routing.h"
-#include "translation-table.h"
-#include "soft-interface.h"
-#include "hard-interface.h"
-#include "types.h"
-#include "vis.h"
-#include "aggregation.h"
-#include "gateway_common.h"
-#include "originator.h"
-
-
-static void send_outstanding_bcast_packet(struct work_struct *work);
-
-/* apply hop penalty for a normal link */
-static uint8_t hop_penalty(const uint8_t tq, struct bat_priv *bat_priv)
-{
- int hop_penalty = atomic_read(&bat_priv->hop_penalty);
- return (tq * (TQ_MAX_VALUE - hop_penalty)) / (TQ_MAX_VALUE);
-}
-
-/* when do we schedule our own packet to be sent */
-static unsigned long own_send_time(struct bat_priv *bat_priv)
-{
- return jiffies + msecs_to_jiffies(
- atomic_read(&bat_priv->orig_interval) -
- JITTER + (random32() % 2*JITTER));
-}
-
-/* when do we schedule a forwarded packet to be sent */
-static unsigned long forward_send_time(struct bat_priv *bat_priv)
-{
- return jiffies + msecs_to_jiffies(random32() % (JITTER/2));
-}
-
-/* send out an already prepared packet to the given address via the
- * specified batman interface */
-int send_skb_packet(struct sk_buff *skb,
- struct batman_if *batman_if,
- uint8_t *dst_addr)
-{
- struct ethhdr *ethhdr;
-
- if (batman_if->if_status != IF_ACTIVE)
- goto send_skb_err;
-
- if (unlikely(!batman_if->net_dev))
- goto send_skb_err;
-
- if (!(batman_if->net_dev->flags & IFF_UP)) {
- pr_warning("Interface %s is not up - can't send packet via "
- "that interface!\n", batman_if->net_dev->name);
- goto send_skb_err;
- }
-
- /* push to the ethernet header. */
- if (my_skb_head_push(skb, sizeof(struct ethhdr)) < 0)
- goto send_skb_err;
-
- skb_reset_mac_header(skb);
-
- ethhdr = (struct ethhdr *) skb_mac_header(skb);
- memcpy(ethhdr->h_source, batman_if->net_dev->dev_addr, ETH_ALEN);
- memcpy(ethhdr->h_dest, dst_addr, ETH_ALEN);
- ethhdr->h_proto = __constant_htons(ETH_P_BATMAN);
-
- skb_set_network_header(skb, ETH_HLEN);
- skb->priority = TC_PRIO_CONTROL;
- skb->protocol = __constant_htons(ETH_P_BATMAN);
-
- skb->dev = batman_if->net_dev;
-
- /* dev_queue_xmit() returns a negative result on error. However on
- * congestion and traffic shaping, it drops and returns NET_XMIT_DROP
- * (which is > 0). This will not be treated as an error. */
-
- return dev_queue_xmit(skb);
-send_skb_err:
- kfree_skb(skb);
- return NET_XMIT_DROP;
-}
-
-/* Send a packet to a given interface */
-static void send_packet_to_if(struct forw_packet *forw_packet,
- struct batman_if *batman_if)
-{
- struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
- char *fwd_str;
- uint8_t packet_num;
- int16_t buff_pos;
- struct batman_packet *batman_packet;
- struct sk_buff *skb;
-
- if (batman_if->if_status != IF_ACTIVE)
- return;
-
- packet_num = 0;
- buff_pos = 0;
- batman_packet = (struct batman_packet *)forw_packet->skb->data;
-
- /* adjust all flags and log packets */
- while (aggregated_packet(buff_pos,
- forw_packet->packet_len,
- batman_packet->num_hna)) {
-
- /* we might have aggregated direct link packets with an
- * ordinary base packet */
- if ((forw_packet->direct_link_flags & (1 << packet_num)) &&
- (forw_packet->if_incoming == batman_if))
- batman_packet->flags |= DIRECTLINK;
- else
- batman_packet->flags &= ~DIRECTLINK;
-
- fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ?
- "Sending own" :
- "Forwarding"));
- bat_dbg(DBG_BATMAN, bat_priv,
- "%s %spacket (originator %pM, seqno %d, TQ %d, TTL %d,"
- " IDF %s) on interface %s [%pM]\n",
- fwd_str, (packet_num > 0 ? "aggregated " : ""),
- batman_packet->orig, ntohl(batman_packet->seqno),
- batman_packet->tq, batman_packet->ttl,
- (batman_packet->flags & DIRECTLINK ?
- "on" : "off"),
- batman_if->net_dev->name, batman_if->net_dev->dev_addr);
-
- buff_pos += sizeof(struct batman_packet) +
- (batman_packet->num_hna * ETH_ALEN);
- packet_num++;
- batman_packet = (struct batman_packet *)
- (forw_packet->skb->data + buff_pos);
- }
-
- /* create clone because function is called more than once */
- skb = skb_clone(forw_packet->skb, GFP_ATOMIC);
- if (skb)
- send_skb_packet(skb, batman_if, broadcast_addr);
-}
-
-/* send a batman packet */
-static void send_packet(struct forw_packet *forw_packet)
-{
- struct batman_if *batman_if;
- struct net_device *soft_iface;
- struct bat_priv *bat_priv;
- struct batman_packet *batman_packet =
- (struct batman_packet *)(forw_packet->skb->data);
- unsigned char directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0);
-
- if (!forw_packet->if_incoming) {
- pr_err("Error - can't forward packet: incoming iface not "
- "specified\n");
- return;
- }
-
- soft_iface = forw_packet->if_incoming->soft_iface;
- bat_priv = netdev_priv(soft_iface);
-
- if (forw_packet->if_incoming->if_status != IF_ACTIVE)
- return;
-
- /* multihomed peer assumed */
- /* non-primary OGMs are only broadcasted on their interface */
- if ((directlink && (batman_packet->ttl == 1)) ||
- (forw_packet->own && (forw_packet->if_incoming->if_num > 0))) {
-
- /* FIXME: what about aggregated packets ? */
- bat_dbg(DBG_BATMAN, bat_priv,
- "%s packet (originator %pM, seqno %d, TTL %d) "
- "on interface %s [%pM]\n",
- (forw_packet->own ? "Sending own" : "Forwarding"),
- batman_packet->orig, ntohl(batman_packet->seqno),
- batman_packet->ttl,
- forw_packet->if_incoming->net_dev->name,
- forw_packet->if_incoming->net_dev->dev_addr);
-
- /* skb is only used once and than forw_packet is free'd */
- send_skb_packet(forw_packet->skb, forw_packet->if_incoming,
- broadcast_addr);
- forw_packet->skb = NULL;
-
- return;
- }
-
- /* broadcast on every interface */
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if (batman_if->soft_iface != soft_iface)
- continue;
-
- send_packet_to_if(forw_packet, batman_if);
- }
- rcu_read_unlock();
-}
-
-static void rebuild_batman_packet(struct bat_priv *bat_priv,
- struct batman_if *batman_if)
-{
- int new_len;
- unsigned char *new_buff;
- struct batman_packet *batman_packet;
-
- new_len = sizeof(struct batman_packet) +
- (bat_priv->num_local_hna * ETH_ALEN);
- new_buff = kmalloc(new_len, GFP_ATOMIC);
-
- /* keep old buffer if kmalloc should fail */
- if (new_buff) {
- memcpy(new_buff, batman_if->packet_buff,
- sizeof(struct batman_packet));
- batman_packet = (struct batman_packet *)new_buff;
-
- batman_packet->num_hna = hna_local_fill_buffer(bat_priv,
- new_buff + sizeof(struct batman_packet),
- new_len - sizeof(struct batman_packet));
-
- kfree(batman_if->packet_buff);
- batman_if->packet_buff = new_buff;
- batman_if->packet_len = new_len;
- }
-}
-
-void schedule_own_packet(struct batman_if *batman_if)
-{
- struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface);
- unsigned long send_time;
- struct batman_packet *batman_packet;
- int vis_server;
-
- if ((batman_if->if_status == IF_NOT_IN_USE) ||
- (batman_if->if_status == IF_TO_BE_REMOVED))
- return;
-
- vis_server = atomic_read(&bat_priv->vis_mode);
-
- /**
- * the interface gets activated here to avoid race conditions between
- * the moment of activating the interface in
- * hardif_activate_interface() where the originator mac is set and
- * outdated packets (especially uninitialized mac addresses) in the
- * packet queue
- */
- if (batman_if->if_status == IF_TO_BE_ACTIVATED)
- batman_if->if_status = IF_ACTIVE;
-
- /* if local hna has changed and interface is a primary interface */
- if ((atomic_read(&bat_priv->hna_local_changed)) &&
- (batman_if == bat_priv->primary_if))
- rebuild_batman_packet(bat_priv, batman_if);
-
- /**
- * NOTE: packet_buff might just have been re-allocated in
- * rebuild_batman_packet()
- */
- batman_packet = (struct batman_packet *)batman_if->packet_buff;
-
- /* change sequence number to network order */
- batman_packet->seqno =
- htonl((uint32_t)atomic_read(&batman_if->seqno));
-
- if (vis_server == VIS_TYPE_SERVER_SYNC)
- batman_packet->flags |= VIS_SERVER;
- else
- batman_packet->flags &= ~VIS_SERVER;
-
- if ((batman_if == bat_priv->primary_if) &&
- (atomic_read(&bat_priv->gw_mode) == GW_MODE_SERVER))
- batman_packet->gw_flags =
- (uint8_t)atomic_read(&bat_priv->gw_bandwidth);
- else
- batman_packet->gw_flags = 0;
-
- atomic_inc(&batman_if->seqno);
-
- slide_own_bcast_window(batman_if);
- send_time = own_send_time(bat_priv);
- add_bat_packet_to_list(bat_priv,
- batman_if->packet_buff,
- batman_if->packet_len,
- batman_if, 1, send_time);
-}
-
-void schedule_forward_packet(struct orig_node *orig_node,
- struct ethhdr *ethhdr,
- struct batman_packet *batman_packet,
- uint8_t directlink, int hna_buff_len,
- struct batman_if *if_incoming)
-{
- struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
- unsigned char in_tq, in_ttl, tq_avg = 0;
- unsigned long send_time;
-
- if (batman_packet->ttl <= 1) {
- bat_dbg(DBG_BATMAN, bat_priv, "ttl exceeded\n");
- return;
- }
-
- in_tq = batman_packet->tq;
- in_ttl = batman_packet->ttl;
-
- batman_packet->ttl--;
- memcpy(batman_packet->prev_sender, ethhdr->h_source, ETH_ALEN);
-
- /* rebroadcast tq of our best ranking neighbor to ensure the rebroadcast
- * of our best tq value */
- if ((orig_node->router) && (orig_node->router->tq_avg != 0)) {
-
- /* rebroadcast ogm of best ranking neighbor as is */
- if (!compare_orig(orig_node->router->addr, ethhdr->h_source)) {
- batman_packet->tq = orig_node->router->tq_avg;
-
- if (orig_node->router->last_ttl)
- batman_packet->ttl = orig_node->router->last_ttl
- - 1;
- }
-
- tq_avg = orig_node->router->tq_avg;
- }
-
- /* apply hop penalty */
- batman_packet->tq = hop_penalty(batman_packet->tq, bat_priv);
-
- bat_dbg(DBG_BATMAN, bat_priv,
- "Forwarding packet: tq_orig: %i, tq_avg: %i, "
- "tq_forw: %i, ttl_orig: %i, ttl_forw: %i\n",
- in_tq, tq_avg, batman_packet->tq, in_ttl - 1,
- batman_packet->ttl);
-
- batman_packet->seqno = htonl(batman_packet->seqno);
-
- /* switch of primaries first hop flag when forwarding */
- batman_packet->flags &= ~PRIMARIES_FIRST_HOP;
- if (directlink)
- batman_packet->flags |= DIRECTLINK;
- else
- batman_packet->flags &= ~DIRECTLINK;
-
- send_time = forward_send_time(bat_priv);
- add_bat_packet_to_list(bat_priv,
- (unsigned char *)batman_packet,
- sizeof(struct batman_packet) + hna_buff_len,
- if_incoming, 0, send_time);
-}
-
-static void forw_packet_free(struct forw_packet *forw_packet)
-{
- if (forw_packet->skb)
- kfree_skb(forw_packet->skb);
- kfree(forw_packet);
-}
-
-static void _add_bcast_packet_to_list(struct bat_priv *bat_priv,
- struct forw_packet *forw_packet,
- unsigned long send_time)
-{
- INIT_HLIST_NODE(&forw_packet->list);
-
- /* add new packet to packet list */
- spin_lock_bh(&bat_priv->forw_bcast_list_lock);
- hlist_add_head(&forw_packet->list, &bat_priv->forw_bcast_list);
- spin_unlock_bh(&bat_priv->forw_bcast_list_lock);
-
- /* start timer for this packet */
- INIT_DELAYED_WORK(&forw_packet->delayed_work,
- send_outstanding_bcast_packet);
- queue_delayed_work(bat_event_workqueue, &forw_packet->delayed_work,
- send_time);
-}
-
-#define atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0)
-/* add a broadcast packet to the queue and setup timers. broadcast packets
- * are sent multiple times to increase probability for beeing received.
- *
- * This function returns NETDEV_TX_OK on success and NETDEV_TX_BUSY on
- * errors.
- *
- * The skb is not consumed, so the caller should make sure that the
- * skb is freed. */
-int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb)
-{
- struct forw_packet *forw_packet;
- struct bcast_packet *bcast_packet;
-
- if (!atomic_dec_not_zero(&bat_priv->bcast_queue_left)) {
- bat_dbg(DBG_BATMAN, bat_priv, "bcast packet queue full\n");
- goto out;
- }
-
- if (!bat_priv->primary_if)
- goto out;
-
- forw_packet = kmalloc(sizeof(struct forw_packet), GFP_ATOMIC);
-
- if (!forw_packet)
- goto out_and_inc;
-
- skb = skb_copy(skb, GFP_ATOMIC);
- if (!skb)
- goto packet_free;
-
- /* as we have a copy now, it is safe to decrease the TTL */
- bcast_packet = (struct bcast_packet *)skb->data;
- bcast_packet->ttl--;
-
- skb_reset_mac_header(skb);
-
- forw_packet->skb = skb;
- forw_packet->if_incoming = bat_priv->primary_if;
-
- /* how often did we send the bcast packet ? */
- forw_packet->num_packets = 0;
-
- _add_bcast_packet_to_list(bat_priv, forw_packet, 1);
- return NETDEV_TX_OK;
-
-packet_free:
- kfree(forw_packet);
-out_and_inc:
- atomic_inc(&bat_priv->bcast_queue_left);
-out:
- return NETDEV_TX_BUSY;
-}
-
-static void send_outstanding_bcast_packet(struct work_struct *work)
-{
- struct batman_if *batman_if;
- struct delayed_work *delayed_work =
- container_of(work, struct delayed_work, work);
- struct forw_packet *forw_packet =
- container_of(delayed_work, struct forw_packet, delayed_work);
- struct sk_buff *skb1;
- struct net_device *soft_iface = forw_packet->if_incoming->soft_iface;
- struct bat_priv *bat_priv = netdev_priv(soft_iface);
-
- spin_lock_bh(&bat_priv->forw_bcast_list_lock);
- hlist_del(&forw_packet->list);
- spin_unlock_bh(&bat_priv->forw_bcast_list_lock);
-
- if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
- goto out;
-
- /* rebroadcast packet */
- rcu_read_lock();
- list_for_each_entry_rcu(batman_if, &if_list, list) {
- if (batman_if->soft_iface != soft_iface)
- continue;
-
- /* send a copy of the saved skb */
- skb1 = skb_clone(forw_packet->skb, GFP_ATOMIC);
- if (skb1)
- send_skb_packet(skb1, batman_if, broadcast_addr);
- }
- rcu_read_unlock();
-
- forw_packet->num_packets++;
-
- /* if we still have some more bcasts to send */
- if (forw_packet->num_packets < 3) {
- _add_bcast_packet_to_list(bat_priv, forw_packet,
- ((5 * HZ) / 1000));
- return;
- }
-
-out:
- forw_packet_free(forw_packet);
- atomic_inc(&bat_priv->bcast_queue_left);
-}
-
-void send_outstanding_bat_packet(struct work_struct *work)
-{
- struct delayed_work *delayed_work =
- container_of(work, struct delayed_work, work);
- struct forw_packet *forw_packet =
- container_of(delayed_work, struct forw_packet, delayed_work);
- struct bat_priv *bat_priv;
-
- bat_priv = netdev_priv(forw_packet->if_incoming->soft_iface);
- spin_lock_bh(&bat_priv->forw_bat_list_lock);
- hlist_del(&forw_packet->list);
- spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-
- if (atomic_read(&bat_priv->mesh_state) == MESH_DEACTIVATING)
- goto out;
-
- send_packet(forw_packet);
-
- /**
- * we have to have at least one packet in the queue
- * to determine the queues wake up time unless we are
- * shutting down
- */
- if (forw_packet->own)
- schedule_own_packet(forw_packet->if_incoming);
-
-out:
- /* don't count own packet */
- if (!forw_packet->own)
- atomic_inc(&bat_priv->batman_queue_left);
-
- forw_packet_free(forw_packet);
-}
-
-void purge_outstanding_packets(struct bat_priv *bat_priv,
- struct batman_if *batman_if)
-{
- struct forw_packet *forw_packet;
- struct hlist_node *tmp_node, *safe_tmp_node;
-
- if (batman_if)
- bat_dbg(DBG_BATMAN, bat_priv,
- "purge_outstanding_packets(): %s\n",
- batman_if->net_dev->name);
- else
- bat_dbg(DBG_BATMAN, bat_priv,
- "purge_outstanding_packets()\n");
-
- /* free bcast list */
- spin_lock_bh(&bat_priv->forw_bcast_list_lock);
- hlist_for_each_entry_safe(forw_packet, tmp_node, safe_tmp_node,
- &bat_priv->forw_bcast_list, list) {
-
- /**
- * if purge_outstanding_packets() was called with an argmument
- * we delete only packets belonging to the given interface
- */
- if ((batman_if) &&
- (forw_packet->if_incoming != batman_if))
- continue;
-
- spin_unlock_bh(&bat_priv->forw_bcast_list_lock);
-
- /**
- * send_outstanding_bcast_packet() will lock the list to
- * delete the item from the list
- */
- cancel_delayed_work_sync(&forw_packet->delayed_work);
- spin_lock_bh(&bat_priv->forw_bcast_list_lock);
- }
- spin_unlock_bh(&bat_priv->forw_bcast_list_lock);
-
- /* free batman packet list */
- spin_lock_bh(&bat_priv->forw_bat_list_lock);
- hlist_for_each_entry_safe(forw_packet, tmp_node, safe_tmp_node,
- &bat_priv->forw_bat_list, list) {
-
- /**
- * if purge_outstanding_packets() was called with an argmument
- * we delete only packets belonging to the given interface
- */
- if ((batman_if) &&
- (forw_packet->if_incoming != batman_if))
- continue;
-
- spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-
- /**
- * send_outstanding_bat_packet() will lock the list to
- * delete the item from the list
- */
- cancel_delayed_work_sync(&forw_packet->delayed_work);
- spin_lock_bh(&bat_priv->forw_bat_list_lock);
- }
- spin_unlock_bh(&bat_priv->forw_bat_list_lock);
-}
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_SEND_H_
-#define _NET_BATMAN_ADV_SEND_H_
-
-#include "types.h"
-
-int send_skb_packet(struct sk_buff *skb,
- struct batman_if *batman_if,
- uint8_t *dst_addr);
-void schedule_own_packet(struct batman_if *batman_if);
-void schedule_forward_packet(struct orig_node *orig_node,
- struct ethhdr *ethhdr,
- struct batman_packet *batman_packet,
- uint8_t directlink, int hna_buff_len,
- struct batman_if *if_outgoing);
-int add_bcast_packet_to_list(struct bat_priv *bat_priv, struct sk_buff *skb);
-void send_outstanding_bat_packet(struct work_struct *work);
-void purge_outstanding_packets(struct bat_priv *bat_priv,
- struct batman_if *batman_if);
-
-#endif /* _NET_BATMAN_ADV_SEND_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "soft-interface.h"
-#include "hard-interface.h"
-#include "routing.h"
-#include "send.h"
-#include "bat_debugfs.h"
-#include "translation-table.h"
-#include "types.h"
-#include "hash.h"
-#include "gateway_common.h"
-#include "gateway_client.h"
-#include "send.h"
-#include "bat_sysfs.h"
-#include <linux/slab.h>
-#include <linux/ethtool.h>
-#include <linux/etherdevice.h>
-#include <linux/if_vlan.h>
-#include "unicast.h"
-#include "routing.h"
-
-
-static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd);
-static void bat_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info);
-static u32 bat_get_msglevel(struct net_device *dev);
-static void bat_set_msglevel(struct net_device *dev, u32 value);
-static u32 bat_get_link(struct net_device *dev);
-static u32 bat_get_rx_csum(struct net_device *dev);
-static int bat_set_rx_csum(struct net_device *dev, u32 data);
-
-static const struct ethtool_ops bat_ethtool_ops = {
- .get_settings = bat_get_settings,
- .get_drvinfo = bat_get_drvinfo,
- .get_msglevel = bat_get_msglevel,
- .set_msglevel = bat_set_msglevel,
- .get_link = bat_get_link,
- .get_rx_csum = bat_get_rx_csum,
- .set_rx_csum = bat_set_rx_csum
-};
-
-int my_skb_head_push(struct sk_buff *skb, unsigned int len)
-{
- int result;
-
- /**
- * TODO: We must check if we can release all references to non-payload
- * data using skb_header_release in our skbs to allow skb_cow_header to
- * work optimally. This means that those skbs are not allowed to read
- * or write any data which is before the current position of skb->data
- * after that call and thus allow other skbs with the same data buffer
- * to write freely in that area.
- */
- result = skb_cow_head(skb, len);
- if (result < 0)
- return result;
-
- skb_push(skb, len);
- return 0;
-}
-
-static void softif_neigh_free_ref(struct kref *refcount)
-{
- struct softif_neigh *softif_neigh;
-
- softif_neigh = container_of(refcount, struct softif_neigh, refcount);
- kfree(softif_neigh);
-}
-
-static void softif_neigh_free_rcu(struct rcu_head *rcu)
-{
- struct softif_neigh *softif_neigh;
-
- softif_neigh = container_of(rcu, struct softif_neigh, rcu);
- kref_put(&softif_neigh->refcount, softif_neigh_free_ref);
-}
-
-void softif_neigh_purge(struct bat_priv *bat_priv)
-{
- struct softif_neigh *softif_neigh, *softif_neigh_tmp;
- struct hlist_node *node, *node_tmp;
-
- spin_lock_bh(&bat_priv->softif_neigh_lock);
-
- hlist_for_each_entry_safe(softif_neigh, node, node_tmp,
- &bat_priv->softif_neigh_list, list) {
-
- if ((!time_after(jiffies, softif_neigh->last_seen +
- msecs_to_jiffies(SOFTIF_NEIGH_TIMEOUT))) &&
- (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE))
- continue;
-
- hlist_del_rcu(&softif_neigh->list);
-
- if (bat_priv->softif_neigh == softif_neigh) {
- bat_dbg(DBG_ROUTES, bat_priv,
- "Current mesh exit point '%pM' vanished "
- "(vid: %d).\n",
- softif_neigh->addr, softif_neigh->vid);
- softif_neigh_tmp = bat_priv->softif_neigh;
- bat_priv->softif_neigh = NULL;
- kref_put(&softif_neigh_tmp->refcount,
- softif_neigh_free_ref);
- }
-
- call_rcu(&softif_neigh->rcu, softif_neigh_free_rcu);
- }
-
- spin_unlock_bh(&bat_priv->softif_neigh_lock);
-}
-
-static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv,
- uint8_t *addr, short vid)
-{
- struct softif_neigh *softif_neigh;
- struct hlist_node *node;
-
- rcu_read_lock();
- hlist_for_each_entry_rcu(softif_neigh, node,
- &bat_priv->softif_neigh_list, list) {
- if (memcmp(softif_neigh->addr, addr, ETH_ALEN) != 0)
- continue;
-
- if (softif_neigh->vid != vid)
- continue;
-
- softif_neigh->last_seen = jiffies;
- goto found;
- }
-
- softif_neigh = kzalloc(sizeof(struct softif_neigh), GFP_ATOMIC);
- if (!softif_neigh)
- goto out;
-
- memcpy(softif_neigh->addr, addr, ETH_ALEN);
- softif_neigh->vid = vid;
- softif_neigh->last_seen = jiffies;
- kref_init(&softif_neigh->refcount);
-
- INIT_HLIST_NODE(&softif_neigh->list);
- spin_lock_bh(&bat_priv->softif_neigh_lock);
- hlist_add_head_rcu(&softif_neigh->list, &bat_priv->softif_neigh_list);
- spin_unlock_bh(&bat_priv->softif_neigh_lock);
-
-found:
- kref_get(&softif_neigh->refcount);
-out:
- rcu_read_unlock();
- return softif_neigh;
-}
-
-int softif_neigh_seq_print_text(struct seq_file *seq, void *offset)
-{
- struct net_device *net_dev = (struct net_device *)seq->private;
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- struct softif_neigh *softif_neigh;
- struct hlist_node *node;
- size_t buf_size, pos;
- char *buff;
-
- if (!bat_priv->primary_if) {
- return seq_printf(seq, "BATMAN mesh %s disabled - "
- "please specify interfaces to enable it\n",
- net_dev->name);
- }
-
- seq_printf(seq, "Softif neighbor list (%s)\n", net_dev->name);
-
- buf_size = 1;
- /* Estimate length for: " xx:xx:xx:xx:xx:xx\n" */
- rcu_read_lock();
- hlist_for_each_entry_rcu(softif_neigh, node,
- &bat_priv->softif_neigh_list, list)
- buf_size += 30;
- rcu_read_unlock();
-
- buff = kmalloc(buf_size, GFP_ATOMIC);
- if (!buff)
- return -ENOMEM;
-
- buff[0] = '\0';
- pos = 0;
-
- rcu_read_lock();
- hlist_for_each_entry_rcu(softif_neigh, node,
- &bat_priv->softif_neigh_list, list) {
- pos += snprintf(buff + pos, 31, "%s %pM (vid: %d)\n",
- bat_priv->softif_neigh == softif_neigh
- ? "=>" : " ", softif_neigh->addr,
- softif_neigh->vid);
- }
- rcu_read_unlock();
-
- seq_printf(seq, "%s", buff);
- kfree(buff);
- return 0;
-}
-
-static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev,
- short vid)
-{
- struct bat_priv *bat_priv = netdev_priv(dev);
- struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
- struct batman_packet *batman_packet;
- struct softif_neigh *softif_neigh, *softif_neigh_tmp;
-
- if (ntohs(ethhdr->h_proto) == ETH_P_8021Q)
- batman_packet = (struct batman_packet *)
- (skb->data + ETH_HLEN + VLAN_HLEN);
- else
- batman_packet = (struct batman_packet *)(skb->data + ETH_HLEN);
-
- if (batman_packet->version != COMPAT_VERSION)
- goto err;
-
- if (batman_packet->packet_type != BAT_PACKET)
- goto err;
-
- if (!(batman_packet->flags & PRIMARIES_FIRST_HOP))
- goto err;
-
- if (is_my_mac(batman_packet->orig))
- goto err;
-
- softif_neigh = softif_neigh_get(bat_priv, batman_packet->orig, vid);
-
- if (!softif_neigh)
- goto err;
-
- if (bat_priv->softif_neigh == softif_neigh)
- goto out;
-
- /* we got a neighbor but its mac is 'bigger' than ours */
- if (memcmp(bat_priv->primary_if->net_dev->dev_addr,
- softif_neigh->addr, ETH_ALEN) < 0)
- goto out;
-
- /* switch to new 'smallest neighbor' */
- if ((bat_priv->softif_neigh) &&
- (memcmp(softif_neigh->addr, bat_priv->softif_neigh->addr,
- ETH_ALEN) < 0)) {
- bat_dbg(DBG_ROUTES, bat_priv,
- "Changing mesh exit point from %pM (vid: %d) "
- "to %pM (vid: %d).\n",
- bat_priv->softif_neigh->addr,
- bat_priv->softif_neigh->vid,
- softif_neigh->addr, softif_neigh->vid);
- softif_neigh_tmp = bat_priv->softif_neigh;
- bat_priv->softif_neigh = softif_neigh;
- kref_put(&softif_neigh_tmp->refcount, softif_neigh_free_ref);
- /* we need to hold the additional reference */
- goto err;
- }
-
- /* close own batX device and use softif_neigh as exit node */
- if ((!bat_priv->softif_neigh) &&
- (memcmp(softif_neigh->addr,
- bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN) < 0)) {
- bat_dbg(DBG_ROUTES, bat_priv,
- "Setting mesh exit point to %pM (vid: %d).\n",
- softif_neigh->addr, softif_neigh->vid);
- bat_priv->softif_neigh = softif_neigh;
- /* we need to hold the additional reference */
- goto err;
- }
-
-out:
- kref_put(&softif_neigh->refcount, softif_neigh_free_ref);
-err:
- kfree_skb(skb);
- return;
-}
-
-static int interface_open(struct net_device *dev)
-{
- netif_start_queue(dev);
- return 0;
-}
-
-static int interface_release(struct net_device *dev)
-{
- netif_stop_queue(dev);
- return 0;
-}
-
-static struct net_device_stats *interface_stats(struct net_device *dev)
-{
- struct bat_priv *bat_priv = netdev_priv(dev);
- return &bat_priv->stats;
-}
-
-static int interface_set_mac_addr(struct net_device *dev, void *p)
-{
- struct bat_priv *bat_priv = netdev_priv(dev);
- struct sockaddr *addr = p;
-
- if (!is_valid_ether_addr(addr->sa_data))
- return -EADDRNOTAVAIL;
-
- /* only modify hna-table if it has been initialised before */
- if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) {
- hna_local_remove(bat_priv, dev->dev_addr,
- "mac address changed");
- hna_local_add(dev, addr->sa_data);
- }
-
- memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
- return 0;
-}
-
-static int interface_change_mtu(struct net_device *dev, int new_mtu)
-{
- /* check ranges */
- if ((new_mtu < 68) || (new_mtu > hardif_min_mtu(dev)))
- return -EINVAL;
-
- dev->mtu = new_mtu;
-
- return 0;
-}
-
-int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
-{
- struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
- struct bat_priv *bat_priv = netdev_priv(soft_iface);
- struct bcast_packet *bcast_packet;
- struct vlan_ethhdr *vhdr;
- int data_len = skb->len, ret;
- short vid = -1;
- bool do_bcast = false;
-
- if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE)
- goto dropped;
-
- soft_iface->trans_start = jiffies;
-
- switch (ntohs(ethhdr->h_proto)) {
- case ETH_P_8021Q:
- vhdr = (struct vlan_ethhdr *)skb->data;
- vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
-
- if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN)
- break;
-
- /* fall through */
- case ETH_P_BATMAN:
- softif_batman_recv(skb, soft_iface, vid);
- goto end;
- }
-
- /**
- * if we have a another chosen mesh exit node in range
- * it will transport the packets to the mesh
- */
- if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid))
- goto dropped;
-
- /* TODO: check this for locks */
- hna_local_add(soft_iface, ethhdr->h_source);
-
- if (is_multicast_ether_addr(ethhdr->h_dest)) {
- ret = gw_is_target(bat_priv, skb);
-
- if (ret < 0)
- goto dropped;
-
- if (ret == 0)
- do_bcast = true;
- }
-
- /* ethernet packet should be broadcasted */
- if (do_bcast) {
- if (!bat_priv->primary_if)
- goto dropped;
-
- if (my_skb_head_push(skb, sizeof(struct bcast_packet)) < 0)
- goto dropped;
-
- bcast_packet = (struct bcast_packet *)skb->data;
- bcast_packet->version = COMPAT_VERSION;
- bcast_packet->ttl = TTL;
-
- /* batman packet type: broadcast */
- bcast_packet->packet_type = BAT_BCAST;
-
- /* hw address of first interface is the orig mac because only
- * this mac is known throughout the mesh */
- memcpy(bcast_packet->orig,
- bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
-
- /* set broadcast sequence number */
- bcast_packet->seqno =
- htonl(atomic_inc_return(&bat_priv->bcast_seqno));
-
- add_bcast_packet_to_list(bat_priv, skb);
-
- /* a copy is stored in the bcast list, therefore removing
- * the original skb. */
- kfree_skb(skb);
-
- /* unicast packet */
- } else {
- ret = unicast_send_skb(skb, bat_priv);
- if (ret != 0)
- goto dropped_freed;
- }
-
- bat_priv->stats.tx_packets++;
- bat_priv->stats.tx_bytes += data_len;
- goto end;
-
-dropped:
- kfree_skb(skb);
-dropped_freed:
- bat_priv->stats.tx_dropped++;
-end:
- return NETDEV_TX_OK;
-}
-
-void interface_rx(struct net_device *soft_iface,
- struct sk_buff *skb, struct batman_if *recv_if,
- int hdr_size)
-{
- struct bat_priv *bat_priv = netdev_priv(soft_iface);
- struct unicast_packet *unicast_packet;
- struct ethhdr *ethhdr;
- struct vlan_ethhdr *vhdr;
- short vid = -1;
- int ret;
-
- /* check if enough space is available for pulling, and pull */
- if (!pskb_may_pull(skb, hdr_size))
- goto dropped;
-
- skb_pull_rcsum(skb, hdr_size);
- skb_reset_mac_header(skb);
-
- ethhdr = (struct ethhdr *)skb_mac_header(skb);
-
- switch (ntohs(ethhdr->h_proto)) {
- case ETH_P_8021Q:
- vhdr = (struct vlan_ethhdr *)skb->data;
- vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
-
- if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN)
- break;
-
- /* fall through */
- case ETH_P_BATMAN:
- goto dropped;
- }
-
- /**
- * if we have a another chosen mesh exit node in range
- * it will transport the packets to the non-mesh network
- */
- if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid)) {
- skb_push(skb, hdr_size);
- unicast_packet = (struct unicast_packet *)skb->data;
-
- if ((unicast_packet->packet_type != BAT_UNICAST) &&
- (unicast_packet->packet_type != BAT_UNICAST_FRAG))
- goto dropped;
-
- skb_reset_mac_header(skb);
-
- memcpy(unicast_packet->dest,
- bat_priv->softif_neigh->addr, ETH_ALEN);
- ret = route_unicast_packet(skb, recv_if, hdr_size);
- if (ret == NET_RX_DROP)
- goto dropped;
-
- goto out;
- }
-
- /* skb->dev & skb->pkt_type are set here */
- if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
- goto dropped;
- skb->protocol = eth_type_trans(skb, soft_iface);
-
- /* should not be neccesary anymore as we use skb_pull_rcsum()
- * TODO: please verify this and remove this TODO
- * -- Dec 21st 2009, Simon Wunderlich */
-
-/* skb->ip_summed = CHECKSUM_UNNECESSARY;*/
-
- bat_priv->stats.rx_packets++;
- bat_priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr);
-
- soft_iface->last_rx = jiffies;
-
- netif_rx(skb);
- return;
-
-dropped:
- kfree_skb(skb);
-out:
- return;
-}
-
-#ifdef HAVE_NET_DEVICE_OPS
-static const struct net_device_ops bat_netdev_ops = {
- .ndo_open = interface_open,
- .ndo_stop = interface_release,
- .ndo_get_stats = interface_stats,
- .ndo_set_mac_address = interface_set_mac_addr,
- .ndo_change_mtu = interface_change_mtu,
- .ndo_start_xmit = interface_tx,
- .ndo_validate_addr = eth_validate_addr
-};
-#endif
-
-static void interface_setup(struct net_device *dev)
-{
- struct bat_priv *priv = netdev_priv(dev);
- char dev_addr[ETH_ALEN];
-
- ether_setup(dev);
-
-#ifdef HAVE_NET_DEVICE_OPS
- dev->netdev_ops = &bat_netdev_ops;
-#else
- dev->open = interface_open;
- dev->stop = interface_release;
- dev->get_stats = interface_stats;
- dev->set_mac_address = interface_set_mac_addr;
- dev->change_mtu = interface_change_mtu;
- dev->hard_start_xmit = interface_tx;
-#endif
- dev->destructor = free_netdev;
-
- /**
- * can't call min_mtu, because the needed variables
- * have not been initialized yet
- */
- dev->mtu = ETH_DATA_LEN;
- dev->hard_header_len = BAT_HEADER_LEN; /* reserve more space in the
- * skbuff for our header */
-
- /* generate random address */
- random_ether_addr(dev_addr);
- memcpy(dev->dev_addr, dev_addr, ETH_ALEN);
-
- SET_ETHTOOL_OPS(dev, &bat_ethtool_ops);
-
- memset(priv, 0, sizeof(struct bat_priv));
-}
-
-struct net_device *softif_create(char *name)
-{
- struct net_device *soft_iface;
- struct bat_priv *bat_priv;
- int ret;
-
- soft_iface = alloc_netdev(sizeof(struct bat_priv) , name,
- interface_setup);
-
- if (!soft_iface) {
- pr_err("Unable to allocate the batman interface: %s\n", name);
- goto out;
- }
-
- ret = register_netdev(soft_iface);
- if (ret < 0) {
- pr_err("Unable to register the batman interface '%s': %i\n",
- name, ret);
- goto free_soft_iface;
- }
-
- bat_priv = netdev_priv(soft_iface);
-
- atomic_set(&bat_priv->aggregated_ogms, 1);
- atomic_set(&bat_priv->bonding, 0);
- atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE);
- atomic_set(&bat_priv->gw_mode, GW_MODE_OFF);
- atomic_set(&bat_priv->gw_sel_class, 20);
- atomic_set(&bat_priv->gw_bandwidth, 41);
- atomic_set(&bat_priv->orig_interval, 1000);
- atomic_set(&bat_priv->hop_penalty, 10);
- atomic_set(&bat_priv->log_level, 0);
- atomic_set(&bat_priv->fragmentation, 1);
- atomic_set(&bat_priv->bcast_queue_left, BCAST_QUEUE_LEN);
- atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN);
-
- atomic_set(&bat_priv->mesh_state, MESH_INACTIVE);
- atomic_set(&bat_priv->bcast_seqno, 1);
- atomic_set(&bat_priv->hna_local_changed, 0);
-
- bat_priv->primary_if = NULL;
- bat_priv->num_ifaces = 0;
- bat_priv->softif_neigh = NULL;
-
- ret = sysfs_add_meshif(soft_iface);
- if (ret < 0)
- goto unreg_soft_iface;
-
- ret = debugfs_add_meshif(soft_iface);
- if (ret < 0)
- goto unreg_sysfs;
-
- ret = mesh_init(soft_iface);
- if (ret < 0)
- goto unreg_debugfs;
-
- return soft_iface;
-
-unreg_debugfs:
- debugfs_del_meshif(soft_iface);
-unreg_sysfs:
- sysfs_del_meshif(soft_iface);
-unreg_soft_iface:
- unregister_netdev(soft_iface);
- return NULL;
-
-free_soft_iface:
- free_netdev(soft_iface);
-out:
- return NULL;
-}
-
-void softif_destroy(struct net_device *soft_iface)
-{
- debugfs_del_meshif(soft_iface);
- sysfs_del_meshif(soft_iface);
- mesh_free(soft_iface);
- unregister_netdevice(soft_iface);
-}
-
-/* ethtool */
-static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- cmd->supported = 0;
- cmd->advertising = 0;
- cmd->speed = SPEED_10;
- cmd->duplex = DUPLEX_FULL;
- cmd->port = PORT_TP;
- cmd->phy_address = 0;
- cmd->transceiver = XCVR_INTERNAL;
- cmd->autoneg = AUTONEG_DISABLE;
- cmd->maxtxpkt = 0;
- cmd->maxrxpkt = 0;
-
- return 0;
-}
-
-static void bat_get_drvinfo(struct net_device *dev,
- struct ethtool_drvinfo *info)
-{
- strcpy(info->driver, "B.A.T.M.A.N. advanced");
- strcpy(info->version, SOURCE_VERSION);
- strcpy(info->fw_version, "N/A");
- strcpy(info->bus_info, "batman");
-}
-
-static u32 bat_get_msglevel(struct net_device *dev)
-{
- return -EOPNOTSUPP;
-}
-
-static void bat_set_msglevel(struct net_device *dev, u32 value)
-{
-}
-
-static u32 bat_get_link(struct net_device *dev)
-{
- return 1;
-}
-
-static u32 bat_get_rx_csum(struct net_device *dev)
-{
- return 0;
-}
-
-static int bat_set_rx_csum(struct net_device *dev, u32 data)
-{
- return -EOPNOTSUPP;
-}
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_SOFT_INTERFACE_H_
-#define _NET_BATMAN_ADV_SOFT_INTERFACE_H_
-
-int my_skb_head_push(struct sk_buff *skb, unsigned int len);
-int softif_neigh_seq_print_text(struct seq_file *seq, void *offset);
-void softif_neigh_purge(struct bat_priv *bat_priv);
-int interface_tx(struct sk_buff *skb, struct net_device *soft_iface);
-void interface_rx(struct net_device *soft_iface,
- struct sk_buff *skb, struct batman_if *recv_if,
- int hdr_size);
-struct net_device *softif_create(char *name);
-void softif_destroy(struct net_device *soft_iface);
-
-#endif /* _NET_BATMAN_ADV_SOFT_INTERFACE_H_ */
+++ /dev/null
-
-What: /sys/class/net/<iface>/batman-adv/mesh_iface
-Date: May 2010
-Contact: Marek Lindner <lindner_marek@yahoo.de>
-Description:
- The /sys/class/net/<iface>/batman-adv/mesh_iface file
- displays the batman mesh interface this <iface>
- currently is associated with.
-
-What: /sys/class/net/<iface>/batman-adv/iface_status
-Date: May 2010
-Contact: Marek Lindner <lindner_marek@yahoo.de>
-Description:
- Indicates the status of <iface> as it is seen by batman.
+++ /dev/null
-
-What: /sys/class/net/<mesh_iface>/mesh/aggregated_ogms
-Date: May 2010
-Contact: Marek Lindner <lindner_marek@yahoo.de>
-Description:
- Indicates whether the batman protocol messages of the
- mesh <mesh_iface> shall be aggregated or not.
-
-What: /sys/class/net/<mesh_iface>/mesh/bonding
-Date: June 2010
-Contact: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
-Description:
- Indicates whether the data traffic going through the
- mesh will be sent using multiple interfaces at the
- same time (if available).
-
-What: /sys/class/net/<mesh_iface>/mesh/fragmentation
-Date: October 2010
-Contact: Andreas Langer <an.langer@gmx.de>
-Description:
- Indicates whether the data traffic going through the
- mesh will be fragmented or silently discarded if the
- packet size exceeds the outgoing interface MTU.
-
-What: /sys/class/net/<mesh_iface>/mesh/gw_bandwidth
-Date: October 2010
-Contact: Marek Lindner <lindner_marek@yahoo.de>
-Description:
- Defines the bandwidth which is propagated by this
- node if gw_mode was set to 'server'.
-
-What: /sys/class/net/<mesh_iface>/mesh/gw_mode
-Date: October 2010
-Contact: Marek Lindner <lindner_marek@yahoo.de>
-Description:
- Defines the state of the gateway features. Can be
- either 'off', 'client' or 'server'.
-
-What: /sys/class/net/<mesh_iface>/mesh/gw_sel_class
-Date: October 2010
-Contact: Marek Lindner <lindner_marek@yahoo.de>
-Description:
- Defines the selection criteria this node will use
- to choose a gateway if gw_mode was set to 'client'.
-
-What: /sys/class/net/<mesh_iface>/mesh/orig_interval
-Date: May 2010
-Contact: Marek Lindner <lindner_marek@yahoo.de>
-Description:
- Defines the interval in milliseconds in which batman
- sends its protocol messages.
-
-What: /sys/class/net/<mesh_iface>/mesh/hop_penalty
-Date: Oct 2010
-Contact: Linus Lüssing <linus.luessing@web.de>
-Description:
- Defines the penalty which will be applied to an
- originator message's tq-field on every hop.
-
-What: /sys/class/net/<mesh_iface>/mesh/vis_mode
-Date: May 2010
-Contact: Marek Lindner <lindner_marek@yahoo.de>
-Description:
- Each batman node only maintains information about its
- own local neighborhood, therefore generating graphs
- showing the topology of the entire mesh is not easily
- feasible without having a central instance to collect
- the local topologies from all nodes. This file allows
- to activate the collecting (server) mode.
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "translation-table.h"
-#include "soft-interface.h"
-#include "types.h"
-#include "hash.h"
-#include "originator.h"
-
-static void hna_local_purge(struct work_struct *work);
-static void _hna_global_del_orig(struct bat_priv *bat_priv,
- struct hna_global_entry *hna_global_entry,
- char *message);
-
-static void hna_local_start_timer(struct bat_priv *bat_priv)
-{
- INIT_DELAYED_WORK(&bat_priv->hna_work, hna_local_purge);
- queue_delayed_work(bat_event_workqueue, &bat_priv->hna_work, 10 * HZ);
-}
-
-int hna_local_init(struct bat_priv *bat_priv)
-{
- if (bat_priv->hna_local_hash)
- return 1;
-
- bat_priv->hna_local_hash = hash_new(128);
-
- if (!bat_priv->hna_local_hash)
- return 0;
-
- atomic_set(&bat_priv->hna_local_changed, 0);
- hna_local_start_timer(bat_priv);
-
- return 1;
-}
-
-void hna_local_add(struct net_device *soft_iface, uint8_t *addr)
-{
- struct bat_priv *bat_priv = netdev_priv(soft_iface);
- struct hna_local_entry *hna_local_entry;
- struct hna_global_entry *hna_global_entry;
- struct hashtable_t *swaphash;
- int required_bytes;
-
- spin_lock_bh(&bat_priv->hna_lhash_lock);
- hna_local_entry =
- ((struct hna_local_entry *)hash_find(bat_priv->hna_local_hash,
- compare_orig, choose_orig,
- addr));
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
-
- if (hna_local_entry) {
- hna_local_entry->last_seen = jiffies;
- return;
- }
-
- /* only announce as many hosts as possible in the batman-packet and
- space in batman_packet->num_hna That also should give a limit to
- MAC-flooding. */
- required_bytes = (bat_priv->num_local_hna + 1) * ETH_ALEN;
- required_bytes += BAT_PACKET_LEN;
-
- if ((required_bytes > ETH_DATA_LEN) ||
- (atomic_read(&bat_priv->aggregated_ogms) &&
- required_bytes > MAX_AGGREGATION_BYTES) ||
- (bat_priv->num_local_hna + 1 > 255)) {
- bat_dbg(DBG_ROUTES, bat_priv,
- "Can't add new local hna entry (%pM): "
- "number of local hna entries exceeds packet size\n",
- addr);
- return;
- }
-
- bat_dbg(DBG_ROUTES, bat_priv,
- "Creating new local hna entry: %pM\n", addr);
-
- hna_local_entry = kmalloc(sizeof(struct hna_local_entry), GFP_ATOMIC);
- if (!hna_local_entry)
- return;
-
- memcpy(hna_local_entry->addr, addr, ETH_ALEN);
- hna_local_entry->last_seen = jiffies;
-
- /* the batman interface mac address should never be purged */
- if (compare_orig(addr, soft_iface->dev_addr))
- hna_local_entry->never_purge = 1;
- else
- hna_local_entry->never_purge = 0;
-
- spin_lock_bh(&bat_priv->hna_lhash_lock);
-
- hash_add(bat_priv->hna_local_hash, compare_orig, choose_orig,
- hna_local_entry);
- bat_priv->num_local_hna++;
- atomic_set(&bat_priv->hna_local_changed, 1);
-
- if (bat_priv->hna_local_hash->elements * 4 >
- bat_priv->hna_local_hash->size) {
- swaphash = hash_resize(bat_priv->hna_local_hash, choose_orig,
- bat_priv->hna_local_hash->size * 2);
-
- if (!swaphash)
- pr_err("Couldn't resize local hna hash table\n");
- else
- bat_priv->hna_local_hash = swaphash;
- }
-
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
-
- /* remove address from global hash if present */
- spin_lock_bh(&bat_priv->hna_ghash_lock);
-
- hna_global_entry = ((struct hna_global_entry *)
- hash_find(bat_priv->hna_global_hash,
- compare_orig, choose_orig, addr));
-
- if (hna_global_entry)
- _hna_global_del_orig(bat_priv, hna_global_entry,
- "local hna received");
-
- spin_unlock_bh(&bat_priv->hna_ghash_lock);
-}
-
-int hna_local_fill_buffer(struct bat_priv *bat_priv,
- unsigned char *buff, int buff_len)
-{
- struct hna_local_entry *hna_local_entry;
- struct element_t *bucket;
- HASHIT(hashit);
- int i = 0;
-
- spin_lock_bh(&bat_priv->hna_lhash_lock);
-
- while (hash_iterate(bat_priv->hna_local_hash, &hashit)) {
-
- if (buff_len < (i + 1) * ETH_ALEN)
- break;
-
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- hna_local_entry = bucket->data;
- memcpy(buff + (i * ETH_ALEN), hna_local_entry->addr, ETH_ALEN);
-
- i++;
- }
-
- /* if we did not get all new local hnas see you next time ;-) */
- if (i == bat_priv->num_local_hna)
- atomic_set(&bat_priv->hna_local_changed, 0);
-
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
- return i;
-}
-
-int hna_local_seq_print_text(struct seq_file *seq, void *offset)
-{
- struct net_device *net_dev = (struct net_device *)seq->private;
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- struct hna_local_entry *hna_local_entry;
- HASHIT(hashit);
- HASHIT(hashit_count);
- struct element_t *bucket;
- size_t buf_size, pos;
- char *buff;
-
- if (!bat_priv->primary_if) {
- return seq_printf(seq, "BATMAN mesh %s disabled - "
- "please specify interfaces to enable it\n",
- net_dev->name);
- }
-
- seq_printf(seq, "Locally retrieved addresses (from %s) "
- "announced via HNA:\n",
- net_dev->name);
-
- spin_lock_bh(&bat_priv->hna_lhash_lock);
-
- buf_size = 1;
- /* Estimate length for: " * xx:xx:xx:xx:xx:xx\n" */
- while (hash_iterate(bat_priv->hna_local_hash, &hashit_count))
- buf_size += 21;
-
- buff = kmalloc(buf_size, GFP_ATOMIC);
- if (!buff) {
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
- return -ENOMEM;
- }
- buff[0] = '\0';
- pos = 0;
-
- while (hash_iterate(bat_priv->hna_local_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- hna_local_entry = bucket->data;
-
- pos += snprintf(buff + pos, 22, " * %pM\n",
- hna_local_entry->addr);
- }
-
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
-
- seq_printf(seq, "%s", buff);
- kfree(buff);
- return 0;
-}
-
-static void _hna_local_del(void *data, void *arg)
-{
- struct bat_priv *bat_priv = (struct bat_priv *)arg;
-
- kfree(data);
- bat_priv->num_local_hna--;
- atomic_set(&bat_priv->hna_local_changed, 1);
-}
-
-static void hna_local_del(struct bat_priv *bat_priv,
- struct hna_local_entry *hna_local_entry,
- char *message)
-{
- bat_dbg(DBG_ROUTES, bat_priv, "Deleting local hna entry (%pM): %s\n",
- hna_local_entry->addr, message);
-
- hash_remove(bat_priv->hna_local_hash, compare_orig, choose_orig,
- hna_local_entry->addr);
- _hna_local_del(hna_local_entry, bat_priv);
-}
-
-void hna_local_remove(struct bat_priv *bat_priv,
- uint8_t *addr, char *message)
-{
- struct hna_local_entry *hna_local_entry;
-
- spin_lock_bh(&bat_priv->hna_lhash_lock);
-
- hna_local_entry = (struct hna_local_entry *)
- hash_find(bat_priv->hna_local_hash, compare_orig, choose_orig,
- addr);
- if (hna_local_entry)
- hna_local_del(bat_priv, hna_local_entry, message);
-
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
-}
-
-static void hna_local_purge(struct work_struct *work)
-{
- struct delayed_work *delayed_work =
- container_of(work, struct delayed_work, work);
- struct bat_priv *bat_priv =
- container_of(delayed_work, struct bat_priv, hna_work);
- struct hna_local_entry *hna_local_entry;
- HASHIT(hashit);
- struct element_t *bucket;
- unsigned long timeout;
-
- spin_lock_bh(&bat_priv->hna_lhash_lock);
-
- while (hash_iterate(bat_priv->hna_local_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- hna_local_entry = bucket->data;
-
- timeout = hna_local_entry->last_seen + LOCAL_HNA_TIMEOUT * HZ;
-
- if ((!hna_local_entry->never_purge) &&
- time_after(jiffies, timeout))
- hna_local_del(bat_priv, hna_local_entry,
- "address timed out");
- }
-
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
- hna_local_start_timer(bat_priv);
-}
-
-void hna_local_free(struct bat_priv *bat_priv)
-{
- if (!bat_priv->hna_local_hash)
- return;
-
- cancel_delayed_work_sync(&bat_priv->hna_work);
- hash_delete(bat_priv->hna_local_hash, _hna_local_del, bat_priv);
- bat_priv->hna_local_hash = NULL;
-}
-
-int hna_global_init(struct bat_priv *bat_priv)
-{
- if (bat_priv->hna_global_hash)
- return 1;
-
- bat_priv->hna_global_hash = hash_new(128);
-
- if (!bat_priv->hna_global_hash)
- return 0;
-
- return 1;
-}
-
-void hna_global_add_orig(struct bat_priv *bat_priv,
- struct orig_node *orig_node,
- unsigned char *hna_buff, int hna_buff_len)
-{
- struct hna_global_entry *hna_global_entry;
- struct hna_local_entry *hna_local_entry;
- struct hashtable_t *swaphash;
- int hna_buff_count = 0;
- unsigned char *hna_ptr;
-
- while ((hna_buff_count + 1) * ETH_ALEN <= hna_buff_len) {
- spin_lock_bh(&bat_priv->hna_ghash_lock);
-
- hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN);
- hna_global_entry = (struct hna_global_entry *)
- hash_find(bat_priv->hna_global_hash, compare_orig,
- choose_orig, hna_ptr);
-
- if (!hna_global_entry) {
- spin_unlock_bh(&bat_priv->hna_ghash_lock);
-
- hna_global_entry =
- kmalloc(sizeof(struct hna_global_entry),
- GFP_ATOMIC);
-
- if (!hna_global_entry)
- break;
-
- memcpy(hna_global_entry->addr, hna_ptr, ETH_ALEN);
-
- bat_dbg(DBG_ROUTES, bat_priv,
- "Creating new global hna entry: "
- "%pM (via %pM)\n",
- hna_global_entry->addr, orig_node->orig);
-
- spin_lock_bh(&bat_priv->hna_ghash_lock);
- hash_add(bat_priv->hna_global_hash, compare_orig,
- choose_orig, hna_global_entry);
-
- }
-
- hna_global_entry->orig_node = orig_node;
- spin_unlock_bh(&bat_priv->hna_ghash_lock);
-
- /* remove address from local hash if present */
- spin_lock_bh(&bat_priv->hna_lhash_lock);
-
- hna_ptr = hna_buff + (hna_buff_count * ETH_ALEN);
- hna_local_entry = (struct hna_local_entry *)
- hash_find(bat_priv->hna_local_hash, compare_orig,
- choose_orig, hna_ptr);
-
- if (hna_local_entry)
- hna_local_del(bat_priv, hna_local_entry,
- "global hna received");
-
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
-
- hna_buff_count++;
- }
-
- /* initialize, and overwrite if malloc succeeds */
- orig_node->hna_buff = NULL;
- orig_node->hna_buff_len = 0;
-
- if (hna_buff_len > 0) {
- orig_node->hna_buff = kmalloc(hna_buff_len, GFP_ATOMIC);
- if (orig_node->hna_buff) {
- memcpy(orig_node->hna_buff, hna_buff, hna_buff_len);
- orig_node->hna_buff_len = hna_buff_len;
- }
- }
-
- spin_lock_bh(&bat_priv->hna_ghash_lock);
-
- if (bat_priv->hna_global_hash->elements * 4 >
- bat_priv->hna_global_hash->size) {
- swaphash = hash_resize(bat_priv->hna_global_hash, choose_orig,
- bat_priv->hna_global_hash->size * 2);
-
- if (!swaphash)
- pr_err("Couldn't resize global hna hash table\n");
- else
- bat_priv->hna_global_hash = swaphash;
- }
-
- spin_unlock_bh(&bat_priv->hna_ghash_lock);
-}
-
-int hna_global_seq_print_text(struct seq_file *seq, void *offset)
-{
- struct net_device *net_dev = (struct net_device *)seq->private;
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- struct hna_global_entry *hna_global_entry;
- HASHIT(hashit);
- HASHIT(hashit_count);
- struct element_t *bucket;
- size_t buf_size, pos;
- char *buff;
-
- if (!bat_priv->primary_if) {
- return seq_printf(seq, "BATMAN mesh %s disabled - "
- "please specify interfaces to enable it\n",
- net_dev->name);
- }
-
- seq_printf(seq, "Globally announced HNAs received via the mesh %s\n",
- net_dev->name);
-
- spin_lock_bh(&bat_priv->hna_ghash_lock);
-
- buf_size = 1;
- /* Estimate length for: " * xx:xx:xx:xx:xx:xx via xx:xx:xx:xx:xx:xx\n"*/
- while (hash_iterate(bat_priv->hna_global_hash, &hashit_count))
- buf_size += 43;
-
- buff = kmalloc(buf_size, GFP_ATOMIC);
- if (!buff) {
- spin_unlock_bh(&bat_priv->hna_ghash_lock);
- return -ENOMEM;
- }
- buff[0] = '\0';
- pos = 0;
-
- while (hash_iterate(bat_priv->hna_global_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- hna_global_entry = bucket->data;
-
- pos += snprintf(buff + pos, 44,
- " * %pM via %pM\n", hna_global_entry->addr,
- hna_global_entry->orig_node->orig);
- }
-
- spin_unlock_bh(&bat_priv->hna_ghash_lock);
-
- seq_printf(seq, "%s", buff);
- kfree(buff);
- return 0;
-}
-
-static void _hna_global_del_orig(struct bat_priv *bat_priv,
- struct hna_global_entry *hna_global_entry,
- char *message)
-{
- bat_dbg(DBG_ROUTES, bat_priv,
- "Deleting global hna entry %pM (via %pM): %s\n",
- hna_global_entry->addr, hna_global_entry->orig_node->orig,
- message);
-
- hash_remove(bat_priv->hna_global_hash, compare_orig, choose_orig,
- hna_global_entry->addr);
- kfree(hna_global_entry);
-}
-
-void hna_global_del_orig(struct bat_priv *bat_priv,
- struct orig_node *orig_node, char *message)
-{
- struct hna_global_entry *hna_global_entry;
- int hna_buff_count = 0;
- unsigned char *hna_ptr;
-
- if (orig_node->hna_buff_len == 0)
- return;
-
- spin_lock_bh(&bat_priv->hna_ghash_lock);
-
- while ((hna_buff_count + 1) * ETH_ALEN <= orig_node->hna_buff_len) {
- hna_ptr = orig_node->hna_buff + (hna_buff_count * ETH_ALEN);
- hna_global_entry = (struct hna_global_entry *)
- hash_find(bat_priv->hna_global_hash, compare_orig,
- choose_orig, hna_ptr);
-
- if ((hna_global_entry) &&
- (hna_global_entry->orig_node == orig_node))
- _hna_global_del_orig(bat_priv, hna_global_entry,
- message);
-
- hna_buff_count++;
- }
-
- spin_unlock_bh(&bat_priv->hna_ghash_lock);
-
- orig_node->hna_buff_len = 0;
- kfree(orig_node->hna_buff);
- orig_node->hna_buff = NULL;
-}
-
-static void hna_global_del(void *data, void *arg)
-{
- kfree(data);
-}
-
-void hna_global_free(struct bat_priv *bat_priv)
-{
- if (!bat_priv->hna_global_hash)
- return;
-
- hash_delete(bat_priv->hna_global_hash, hna_global_del, NULL);
- bat_priv->hna_global_hash = NULL;
-}
-
-struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr)
-{
- struct hna_global_entry *hna_global_entry;
-
- spin_lock_bh(&bat_priv->hna_ghash_lock);
- hna_global_entry = (struct hna_global_entry *)
- hash_find(bat_priv->hna_global_hash,
- compare_orig, choose_orig, addr);
- spin_unlock_bh(&bat_priv->hna_ghash_lock);
-
- if (!hna_global_entry)
- return NULL;
-
- return hna_global_entry->orig_node;
-}
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
-#define _NET_BATMAN_ADV_TRANSLATION_TABLE_H_
-
-#include "types.h"
-
-int hna_local_init(struct bat_priv *bat_priv);
-void hna_local_add(struct net_device *soft_iface, uint8_t *addr);
-void hna_local_remove(struct bat_priv *bat_priv,
- uint8_t *addr, char *message);
-int hna_local_fill_buffer(struct bat_priv *bat_priv,
- unsigned char *buff, int buff_len);
-int hna_local_seq_print_text(struct seq_file *seq, void *offset);
-void hna_local_free(struct bat_priv *bat_priv);
-int hna_global_init(struct bat_priv *bat_priv);
-void hna_global_add_orig(struct bat_priv *bat_priv,
- struct orig_node *orig_node,
- unsigned char *hna_buff, int hna_buff_len);
-int hna_global_seq_print_text(struct seq_file *seq, void *offset);
-void hna_global_del_orig(struct bat_priv *bat_priv,
- struct orig_node *orig_node, char *message);
-void hna_global_free(struct bat_priv *bat_priv);
-struct orig_node *transtable_search(struct bat_priv *bat_priv, uint8_t *addr);
-
-#endif /* _NET_BATMAN_ADV_TRANSLATION_TABLE_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors:
- *
- * Marek Lindner, Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-
-
-#ifndef _NET_BATMAN_ADV_TYPES_H_
-#define _NET_BATMAN_ADV_TYPES_H_
-
-#include "packet.h"
-#include "bitarray.h"
-
-#define BAT_HEADER_LEN (sizeof(struct ethhdr) + \
- ((sizeof(struct unicast_packet) > sizeof(struct bcast_packet) ? \
- sizeof(struct unicast_packet) : \
- sizeof(struct bcast_packet))))
-
-
-struct batman_if {
- struct list_head list;
- int16_t if_num;
- char if_status;
- struct net_device *net_dev;
- atomic_t seqno;
- atomic_t frag_seqno;
- unsigned char *packet_buff;
- int packet_len;
- struct kobject *hardif_obj;
- struct kref refcount;
- struct packet_type batman_adv_ptype;
- struct net_device *soft_iface;
- struct rcu_head rcu;
-};
-
-/**
- * orig_node - structure for orig_list maintaining nodes of mesh
- * @primary_addr: hosts primary interface address
- * @last_valid: when last packet from this node was received
- * @bcast_seqno_reset: time when the broadcast seqno window was reset
- * @batman_seqno_reset: time when the batman seqno window was reset
- * @gw_flags: flags related to gateway class
- * @flags: for now only VIS_SERVER flag
- * @last_real_seqno: last and best known squence number
- * @last_ttl: ttl of last received packet
- * @last_bcast_seqno: last broadcast sequence number received by this host
- *
- * @candidates: how many candidates are available
- * @selected: next bonding candidate
- */
-struct orig_node {
- uint8_t orig[ETH_ALEN];
- uint8_t primary_addr[ETH_ALEN];
- struct neigh_node *router;
- TYPE_OF_WORD *bcast_own;
- uint8_t *bcast_own_sum;
- uint8_t tq_own;
- int tq_asym_penalty;
- unsigned long last_valid;
- unsigned long bcast_seqno_reset;
- unsigned long batman_seqno_reset;
- uint8_t gw_flags;
- uint8_t flags;
- unsigned char *hna_buff;
- int16_t hna_buff_len;
- uint32_t last_real_seqno;
- uint8_t last_ttl;
- TYPE_OF_WORD bcast_bits[NUM_WORDS];
- uint32_t last_bcast_seqno;
- struct list_head neigh_list;
- struct list_head frag_list;
- unsigned long last_frag_packet;
- struct {
- uint8_t candidates;
- struct neigh_node *selected;
- } bond;
-};
-
-struct gw_node {
- struct hlist_node list;
- struct orig_node *orig_node;
- unsigned long deleted;
- struct kref refcount;
- struct rcu_head rcu;
-};
-
-/**
- * neigh_node
- * @last_valid: when last packet via this neighbor was received
- */
-struct neigh_node {
- struct list_head list;
- uint8_t addr[ETH_ALEN];
- uint8_t real_packet_count;
- uint8_t tq_recv[TQ_GLOBAL_WINDOW_SIZE];
- uint8_t tq_index;
- uint8_t tq_avg;
- uint8_t last_ttl;
- struct neigh_node *next_bond_candidate;
- unsigned long last_valid;
- TYPE_OF_WORD real_bits[NUM_WORDS];
- struct orig_node *orig_node;
- struct batman_if *if_incoming;
-};
-
-
-struct bat_priv {
- atomic_t mesh_state;
- struct net_device_stats stats;
- atomic_t aggregated_ogms; /* boolean */
- atomic_t bonding; /* boolean */
- atomic_t fragmentation; /* boolean */
- atomic_t vis_mode; /* VIS_TYPE_* */
- atomic_t gw_mode; /* GW_MODE_* */
- atomic_t gw_sel_class; /* uint */
- atomic_t gw_bandwidth; /* gw bandwidth */
- atomic_t orig_interval; /* uint */
- atomic_t hop_penalty; /* uint */
- atomic_t log_level; /* uint */
- atomic_t bcast_seqno;
- atomic_t bcast_queue_left;
- atomic_t batman_queue_left;
- char num_ifaces;
- struct hlist_head softif_neigh_list;
- struct softif_neigh *softif_neigh;
- struct debug_log *debug_log;
- struct batman_if *primary_if;
- struct kobject *mesh_obj;
- struct dentry *debug_dir;
- struct hlist_head forw_bat_list;
- struct hlist_head forw_bcast_list;
- struct hlist_head gw_list;
- struct list_head vis_send_list;
- struct hashtable_t *orig_hash;
- struct hashtable_t *hna_local_hash;
- struct hashtable_t *hna_global_hash;
- struct hashtable_t *vis_hash;
- spinlock_t orig_hash_lock; /* protects orig_hash */
- spinlock_t forw_bat_list_lock; /* protects forw_bat_list */
- spinlock_t forw_bcast_list_lock; /* protects */
- spinlock_t hna_lhash_lock; /* protects hna_local_hash */
- spinlock_t hna_ghash_lock; /* protects hna_global_hash */
- spinlock_t gw_list_lock; /* protects gw_list */
- spinlock_t vis_hash_lock; /* protects vis_hash */
- spinlock_t vis_list_lock; /* protects vis_info::recv_list */
- spinlock_t softif_neigh_lock; /* protects soft-interface neigh list */
- int16_t num_local_hna;
- atomic_t hna_local_changed;
- struct delayed_work hna_work;
- struct delayed_work orig_work;
- struct delayed_work vis_work;
- struct gw_node *curr_gw;
- struct vis_info *my_vis_info;
-};
-
-struct socket_client {
- struct list_head queue_list;
- unsigned int queue_len;
- unsigned char index;
- spinlock_t lock; /* protects queue_list, queue_len, index */
- wait_queue_head_t queue_wait;
- struct bat_priv *bat_priv;
-};
-
-struct socket_packet {
- struct list_head list;
- size_t icmp_len;
- struct icmp_packet_rr icmp_packet;
-};
-
-struct hna_local_entry {
- uint8_t addr[ETH_ALEN];
- unsigned long last_seen;
- char never_purge;
-};
-
-struct hna_global_entry {
- uint8_t addr[ETH_ALEN];
- struct orig_node *orig_node;
-};
-
-/**
- * forw_packet - structure for forw_list maintaining packets to be
- * send/forwarded
- */
-struct forw_packet {
- struct hlist_node list;
- unsigned long send_time;
- uint8_t own;
- struct sk_buff *skb;
- uint16_t packet_len;
- uint32_t direct_link_flags;
- uint8_t num_packets;
- struct delayed_work delayed_work;
- struct batman_if *if_incoming;
-};
-
-/* While scanning for vis-entries of a particular vis-originator
- * this list collects its interfaces to create a subgraph/cluster
- * out of them later
- */
-struct if_list_entry {
- uint8_t addr[ETH_ALEN];
- bool primary;
- struct hlist_node list;
-};
-
-struct debug_log {
- char log_buff[LOG_BUF_LEN];
- unsigned long log_start;
- unsigned long log_end;
- spinlock_t lock; /* protects log_buff, log_start and log_end */
- wait_queue_head_t queue_wait;
-};
-
-struct frag_packet_list_entry {
- struct list_head list;
- uint16_t seqno;
- struct sk_buff *skb;
-};
-
-struct vis_info {
- unsigned long first_seen;
- struct list_head recv_list;
- /* list of server-neighbors we received a vis-packet
- * from. we should not reply to them. */
- struct list_head send_list;
- struct kref refcount;
- struct bat_priv *bat_priv;
- /* this packet might be part of the vis send queue. */
- struct sk_buff *skb_packet;
- /* vis_info may follow here*/
-} __attribute__((packed));
-
-struct vis_info_entry {
- uint8_t src[ETH_ALEN];
- uint8_t dest[ETH_ALEN];
- uint8_t quality; /* quality = 0 means HNA */
-} __attribute__((packed));
-
-struct recvlist_node {
- struct list_head list;
- uint8_t mac[ETH_ALEN];
-};
-
-struct softif_neigh {
- struct hlist_node list;
- uint8_t addr[ETH_ALEN];
- unsigned long last_seen;
- short vid;
- struct kref refcount;
- struct rcu_head rcu;
-};
-
-#endif /* _NET_BATMAN_ADV_TYPES_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2010 B.A.T.M.A.N. contributors:
- *
- * Andreas Langer
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "unicast.h"
-#include "send.h"
-#include "soft-interface.h"
-#include "gateway_client.h"
-#include "originator.h"
-#include "hash.h"
-#include "translation-table.h"
-#include "routing.h"
-#include "hard-interface.h"
-
-
-static struct sk_buff *frag_merge_packet(struct list_head *head,
- struct frag_packet_list_entry *tfp,
- struct sk_buff *skb)
-{
- struct unicast_frag_packet *up =
- (struct unicast_frag_packet *)skb->data;
- struct sk_buff *tmp_skb;
- struct unicast_packet *unicast_packet;
- int hdr_len = sizeof(struct unicast_packet),
- uni_diff = sizeof(struct unicast_frag_packet) - hdr_len;
-
- /* set skb to the first part and tmp_skb to the second part */
- if (up->flags & UNI_FRAG_HEAD) {
- tmp_skb = tfp->skb;
- } else {
- tmp_skb = skb;
- skb = tfp->skb;
- }
-
- skb_pull(tmp_skb, sizeof(struct unicast_frag_packet));
- if (pskb_expand_head(skb, 0, tmp_skb->len, GFP_ATOMIC) < 0) {
- /* free buffered skb, skb will be freed later */
- kfree_skb(tfp->skb);
- return NULL;
- }
-
- /* move free entry to end */
- tfp->skb = NULL;
- tfp->seqno = 0;
- list_move_tail(&tfp->list, head);
-
- memcpy(skb_put(skb, tmp_skb->len), tmp_skb->data, tmp_skb->len);
- kfree_skb(tmp_skb);
-
- memmove(skb->data + uni_diff, skb->data, hdr_len);
- unicast_packet = (struct unicast_packet *) skb_pull(skb, uni_diff);
- unicast_packet->packet_type = BAT_UNICAST;
-
- return skb;
-}
-
-static void frag_create_entry(struct list_head *head, struct sk_buff *skb)
-{
- struct frag_packet_list_entry *tfp;
- struct unicast_frag_packet *up =
- (struct unicast_frag_packet *)skb->data;
-
- /* free and oldest packets stand at the end */
- tfp = list_entry((head)->prev, typeof(*tfp), list);
- kfree_skb(tfp->skb);
-
- tfp->seqno = ntohs(up->seqno);
- tfp->skb = skb;
- list_move(&tfp->list, head);
- return;
-}
-
-static int frag_create_buffer(struct list_head *head)
-{
- int i;
- struct frag_packet_list_entry *tfp;
-
- for (i = 0; i < FRAG_BUFFER_SIZE; i++) {
- tfp = kmalloc(sizeof(struct frag_packet_list_entry),
- GFP_ATOMIC);
- if (!tfp) {
- frag_list_free(head);
- return -ENOMEM;
- }
- tfp->skb = NULL;
- tfp->seqno = 0;
- INIT_LIST_HEAD(&tfp->list);
- list_add(&tfp->list, head);
- }
-
- return 0;
-}
-
-static struct frag_packet_list_entry *frag_search_packet(struct list_head *head,
- struct unicast_frag_packet *up)
-{
- struct frag_packet_list_entry *tfp;
- struct unicast_frag_packet *tmp_up = NULL;
- uint16_t search_seqno;
-
- if (up->flags & UNI_FRAG_HEAD)
- search_seqno = ntohs(up->seqno)+1;
- else
- search_seqno = ntohs(up->seqno)-1;
-
- list_for_each_entry(tfp, head, list) {
-
- if (!tfp->skb)
- continue;
-
- if (tfp->seqno == ntohs(up->seqno))
- goto mov_tail;
-
- tmp_up = (struct unicast_frag_packet *)tfp->skb->data;
-
- if (tfp->seqno == search_seqno) {
-
- if ((tmp_up->flags & UNI_FRAG_HEAD) !=
- (up->flags & UNI_FRAG_HEAD))
- return tfp;
- else
- goto mov_tail;
- }
- }
- return NULL;
-
-mov_tail:
- list_move_tail(&tfp->list, head);
- return NULL;
-}
-
-void frag_list_free(struct list_head *head)
-{
- struct frag_packet_list_entry *pf, *tmp_pf;
-
- if (!list_empty(head)) {
-
- list_for_each_entry_safe(pf, tmp_pf, head, list) {
- kfree_skb(pf->skb);
- list_del(&pf->list);
- kfree(pf);
- }
- }
- return;
-}
-
-/* frag_reassemble_skb():
- * returns NET_RX_DROP if the operation failed - skb is left intact
- * returns NET_RX_SUCCESS if the fragment was buffered (skb_new will be NULL)
- * or the skb could be reassembled (skb_new will point to the new packet and
- * skb was freed)
- */
-int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
- struct sk_buff **new_skb)
-{
- struct orig_node *orig_node;
- struct frag_packet_list_entry *tmp_frag_entry;
- int ret = NET_RX_DROP;
- struct unicast_frag_packet *unicast_packet =
- (struct unicast_frag_packet *)skb->data;
-
- *new_skb = NULL;
- spin_lock_bh(&bat_priv->orig_hash_lock);
- orig_node = ((struct orig_node *)
- hash_find(bat_priv->orig_hash, compare_orig, choose_orig,
- unicast_packet->orig));
-
- if (!orig_node) {
- pr_debug("couldn't find originator in orig_hash\n");
- goto out;
- }
-
- orig_node->last_frag_packet = jiffies;
-
- if (list_empty(&orig_node->frag_list) &&
- frag_create_buffer(&orig_node->frag_list)) {
- pr_debug("couldn't create frag buffer\n");
- goto out;
- }
-
- tmp_frag_entry = frag_search_packet(&orig_node->frag_list,
- unicast_packet);
-
- if (!tmp_frag_entry) {
- frag_create_entry(&orig_node->frag_list, skb);
- ret = NET_RX_SUCCESS;
- goto out;
- }
-
- *new_skb = frag_merge_packet(&orig_node->frag_list, tmp_frag_entry,
- skb);
- /* if not, merge failed */
- if (*new_skb)
- ret = NET_RX_SUCCESS;
-out:
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- return ret;
-}
-
-int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
- struct batman_if *batman_if, uint8_t dstaddr[])
-{
- struct unicast_packet tmp_uc, *unicast_packet;
- struct sk_buff *frag_skb;
- struct unicast_frag_packet *frag1, *frag2;
- int uc_hdr_len = sizeof(struct unicast_packet);
- int ucf_hdr_len = sizeof(struct unicast_frag_packet);
- int data_len = skb->len;
-
- if (!bat_priv->primary_if)
- goto dropped;
-
- unicast_packet = (struct unicast_packet *) skb->data;
-
- memcpy(&tmp_uc, unicast_packet, uc_hdr_len);
- frag_skb = dev_alloc_skb(data_len - (data_len / 2) + ucf_hdr_len);
- skb_split(skb, frag_skb, data_len / 2);
-
- if (my_skb_head_push(skb, ucf_hdr_len - uc_hdr_len) < 0 ||
- my_skb_head_push(frag_skb, ucf_hdr_len) < 0)
- goto drop_frag;
-
- frag1 = (struct unicast_frag_packet *)skb->data;
- frag2 = (struct unicast_frag_packet *)frag_skb->data;
-
- memcpy(frag1, &tmp_uc, sizeof(struct unicast_packet));
-
- frag1->ttl--;
- frag1->version = COMPAT_VERSION;
- frag1->packet_type = BAT_UNICAST_FRAG;
-
- memcpy(frag1->orig, bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN);
- memcpy(frag2, frag1, sizeof(struct unicast_frag_packet));
-
- frag1->flags |= UNI_FRAG_HEAD;
- frag2->flags &= ~UNI_FRAG_HEAD;
-
- frag1->seqno = htons((uint16_t)atomic_inc_return(
- &batman_if->frag_seqno));
- frag2->seqno = htons((uint16_t)atomic_inc_return(
- &batman_if->frag_seqno));
-
- send_skb_packet(skb, batman_if, dstaddr);
- send_skb_packet(frag_skb, batman_if, dstaddr);
- return NET_RX_SUCCESS;
-
-drop_frag:
- kfree_skb(frag_skb);
-dropped:
- kfree_skb(skb);
- return NET_RX_DROP;
-}
-
-int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv)
-{
- struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
- struct unicast_packet *unicast_packet;
- struct orig_node *orig_node;
- struct batman_if *batman_if;
- struct neigh_node *router;
- int data_len = skb->len;
- uint8_t dstaddr[6];
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
-
- /* get routing information */
- if (is_multicast_ether_addr(ethhdr->h_dest))
- orig_node = (struct orig_node *)gw_get_selected(bat_priv);
- else
- orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
- compare_orig,
- choose_orig,
- ethhdr->h_dest));
-
- /* check for hna host */
- if (!orig_node)
- orig_node = transtable_search(bat_priv, ethhdr->h_dest);
-
- router = find_router(bat_priv, orig_node, NULL);
-
- if (!router)
- goto unlock;
-
- /* don't lock while sending the packets ... we therefore
- * copy the required data before sending */
-
- batman_if = router->if_incoming;
- memcpy(dstaddr, router->addr, ETH_ALEN);
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- if (batman_if->if_status != IF_ACTIVE)
- goto dropped;
-
- if (my_skb_head_push(skb, sizeof(struct unicast_packet)) < 0)
- goto dropped;
-
- unicast_packet = (struct unicast_packet *)skb->data;
-
- unicast_packet->version = COMPAT_VERSION;
- /* batman packet type: unicast */
- unicast_packet->packet_type = BAT_UNICAST;
- /* set unicast ttl */
- unicast_packet->ttl = TTL;
- /* copy the destination for faster routing */
- memcpy(unicast_packet->dest, orig_node->orig, ETH_ALEN);
-
- if (atomic_read(&bat_priv->fragmentation) &&
- data_len + sizeof(struct unicast_packet) >
- batman_if->net_dev->mtu) {
- /* send frag skb decreases ttl */
- unicast_packet->ttl++;
- return frag_send_skb(skb, bat_priv, batman_if,
- dstaddr);
- }
- send_skb_packet(skb, batman_if, dstaddr);
- return 0;
-
-unlock:
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-dropped:
- kfree_skb(skb);
- return 1;
-}
+++ /dev/null
-/*
- * Copyright (C) 2010 B.A.T.M.A.N. contributors:
- *
- * Andreas Langer
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_UNICAST_H_
-#define _NET_BATMAN_ADV_UNICAST_H_
-
-#define FRAG_TIMEOUT 10000 /* purge frag list entrys after time in ms */
-#define FRAG_BUFFER_SIZE 6 /* number of list elements in buffer */
-
-int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
- struct sk_buff **new_skb);
-void frag_list_free(struct list_head *head);
-int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv);
-int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
- struct batman_if *batman_if, uint8_t dstaddr[]);
-
-#endif /* _NET_BATMAN_ADV_UNICAST_H_ */
+++ /dev/null
-/*
- * Copyright (C) 2008-2010 B.A.T.M.A.N. contributors:
- *
- * Simon Wunderlich
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#include "main.h"
-#include "send.h"
-#include "translation-table.h"
-#include "vis.h"
-#include "soft-interface.h"
-#include "hard-interface.h"
-#include "hash.h"
-#include "originator.h"
-
-#define MAX_VIS_PACKET_SIZE 1000
-
-/* Returns the smallest signed integer in two's complement with the sizeof x */
-#define smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u)))
-
-/* Checks if a sequence number x is a predecessor/successor of y.
- * they handle overflows/underflows and can correctly check for a
- * predecessor/successor unless the variable sequence number has grown by
- * more then 2**(bitwidth(x)-1)-1.
- * This means that for a uint8_t with the maximum value 255, it would think:
- * - when adding nothing - it is neither a predecessor nor a successor
- * - before adding more than 127 to the starting value - it is a predecessor,
- * - when adding 128 - it is neither a predecessor nor a successor,
- * - after adding more than 127 to the starting value - it is a successor */
-#define seq_before(x, y) ({typeof(x) _dummy = (x - y); \
- _dummy > smallest_signed_int(_dummy); })
-#define seq_after(x, y) seq_before(y, x)
-
-static void start_vis_timer(struct bat_priv *bat_priv);
-
-/* free the info */
-static void free_info(struct kref *ref)
-{
- struct vis_info *info = container_of(ref, struct vis_info, refcount);
- struct bat_priv *bat_priv = info->bat_priv;
- struct recvlist_node *entry, *tmp;
-
- list_del_init(&info->send_list);
- spin_lock_bh(&bat_priv->vis_list_lock);
- list_for_each_entry_safe(entry, tmp, &info->recv_list, list) {
- list_del(&entry->list);
- kfree(entry);
- }
-
- spin_unlock_bh(&bat_priv->vis_list_lock);
- kfree_skb(info->skb_packet);
-}
-
-/* Compare two vis packets, used by the hashing algorithm */
-static int vis_info_cmp(void *data1, void *data2)
-{
- struct vis_info *d1, *d2;
- struct vis_packet *p1, *p2;
- d1 = data1;
- d2 = data2;
- p1 = (struct vis_packet *)d1->skb_packet->data;
- p2 = (struct vis_packet *)d2->skb_packet->data;
- return compare_orig(p1->vis_orig, p2->vis_orig);
-}
-
-/* hash function to choose an entry in a hash table of given size */
-/* hash algorithm from http://en.wikipedia.org/wiki/Hash_table */
-static int vis_info_choose(void *data, int size)
-{
- struct vis_info *vis_info = data;
- struct vis_packet *packet;
- unsigned char *key;
- uint32_t hash = 0;
- size_t i;
-
- packet = (struct vis_packet *)vis_info->skb_packet->data;
- key = packet->vis_orig;
- for (i = 0; i < ETH_ALEN; i++) {
- hash += key[i];
- hash += (hash << 10);
- hash ^= (hash >> 6);
- }
-
- hash += (hash << 3);
- hash ^= (hash >> 11);
- hash += (hash << 15);
-
- return hash % size;
-}
-
-/* insert interface to the list of interfaces of one originator, if it
- * does not already exist in the list */
-static void vis_data_insert_interface(const uint8_t *interface,
- struct hlist_head *if_list,
- bool primary)
-{
- struct if_list_entry *entry;
- struct hlist_node *pos;
-
- hlist_for_each_entry(entry, pos, if_list, list) {
- if (compare_orig(entry->addr, (void *)interface))
- return;
- }
-
- /* its a new address, add it to the list */
- entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
- if (!entry)
- return;
- memcpy(entry->addr, interface, ETH_ALEN);
- entry->primary = primary;
- hlist_add_head(&entry->list, if_list);
-}
-
-static ssize_t vis_data_read_prim_sec(char *buff, struct hlist_head *if_list)
-{
- struct if_list_entry *entry;
- struct hlist_node *pos;
- size_t len = 0;
-
- hlist_for_each_entry(entry, pos, if_list, list) {
- if (entry->primary)
- len += sprintf(buff + len, "PRIMARY, ");
- else
- len += sprintf(buff + len, "SEC %pM, ", entry->addr);
- }
-
- return len;
-}
-
-static size_t vis_data_count_prim_sec(struct hlist_head *if_list)
-{
- struct if_list_entry *entry;
- struct hlist_node *pos;
- size_t count = 0;
-
- hlist_for_each_entry(entry, pos, if_list, list) {
- if (entry->primary)
- count += 9;
- else
- count += 23;
- }
-
- return count;
-}
-
-/* read an entry */
-static ssize_t vis_data_read_entry(char *buff, struct vis_info_entry *entry,
- uint8_t *src, bool primary)
-{
- /* maximal length: max(4+17+2, 3+17+1+3+2) == 26 */
- if (primary && entry->quality == 0)
- return sprintf(buff, "HNA %pM, ", entry->dest);
- else if (compare_orig(entry->src, src))
- return sprintf(buff, "TQ %pM %d, ", entry->dest,
- entry->quality);
-
- return 0;
-}
-
-int vis_seq_print_text(struct seq_file *seq, void *offset)
-{
- HASHIT(hashit);
- HASHIT(hashit_count);
- struct element_t *bucket;
- struct vis_info *info;
- struct vis_packet *packet;
- struct vis_info_entry *entries;
- struct net_device *net_dev = (struct net_device *)seq->private;
- struct bat_priv *bat_priv = netdev_priv(net_dev);
- HLIST_HEAD(vis_if_list);
- struct if_list_entry *entry;
- struct hlist_node *pos, *n;
- int i;
- int vis_server = atomic_read(&bat_priv->vis_mode);
- size_t buff_pos, buf_size;
- char *buff;
-
- if ((!bat_priv->primary_if) ||
- (vis_server == VIS_TYPE_CLIENT_UPDATE))
- return 0;
-
- buf_size = 1;
- /* Estimate length */
- spin_lock_bh(&bat_priv->vis_hash_lock);
- while (hash_iterate(bat_priv->vis_hash, &hashit_count)) {
- bucket = hlist_entry(hashit_count.walk, struct element_t,
- hlist);
- info = bucket->data;
- packet = (struct vis_packet *)info->skb_packet->data;
- entries = (struct vis_info_entry *)
- ((char *)packet + sizeof(struct vis_packet));
-
- for (i = 0; i < packet->entries; i++) {
- if (entries[i].quality == 0)
- continue;
- vis_data_insert_interface(entries[i].src, &vis_if_list,
- compare_orig(entries[i].src, packet->vis_orig));
- }
-
- hlist_for_each_entry(entry, pos, &vis_if_list, list) {
- buf_size += 18 + 26 * packet->entries;
-
- /* add primary/secondary records */
- if (compare_orig(entry->addr, packet->vis_orig))
- buf_size +=
- vis_data_count_prim_sec(&vis_if_list);
-
- buf_size += 1;
- }
-
- hlist_for_each_entry_safe(entry, pos, n, &vis_if_list, list) {
- hlist_del(&entry->list);
- kfree(entry);
- }
- }
-
- buff = kmalloc(buf_size, GFP_ATOMIC);
- if (!buff) {
- spin_unlock_bh(&bat_priv->vis_hash_lock);
- return -ENOMEM;
- }
- buff[0] = '\0';
- buff_pos = 0;
-
- while (hash_iterate(bat_priv->vis_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- info = bucket->data;
- packet = (struct vis_packet *)info->skb_packet->data;
- entries = (struct vis_info_entry *)
- ((char *)packet + sizeof(struct vis_packet));
-
- for (i = 0; i < packet->entries; i++) {
- if (entries[i].quality == 0)
- continue;
- vis_data_insert_interface(entries[i].src, &vis_if_list,
- compare_orig(entries[i].src, packet->vis_orig));
- }
-
- hlist_for_each_entry(entry, pos, &vis_if_list, list) {
- buff_pos += sprintf(buff + buff_pos, "%pM,",
- entry->addr);
-
- for (i = 0; i < packet->entries; i++)
- buff_pos += vis_data_read_entry(buff + buff_pos,
- &entries[i],
- entry->addr,
- entry->primary);
-
- /* add primary/secondary records */
- if (compare_orig(entry->addr, packet->vis_orig))
- buff_pos +=
- vis_data_read_prim_sec(buff + buff_pos,
- &vis_if_list);
-
- buff_pos += sprintf(buff + buff_pos, "\n");
- }
-
- hlist_for_each_entry_safe(entry, pos, n, &vis_if_list, list) {
- hlist_del(&entry->list);
- kfree(entry);
- }
- }
-
- spin_unlock_bh(&bat_priv->vis_hash_lock);
-
- seq_printf(seq, "%s", buff);
- kfree(buff);
-
- return 0;
-}
-
-/* add the info packet to the send list, if it was not
- * already linked in. */
-static void send_list_add(struct bat_priv *bat_priv, struct vis_info *info)
-{
- if (list_empty(&info->send_list)) {
- kref_get(&info->refcount);
- list_add_tail(&info->send_list, &bat_priv->vis_send_list);
- }
-}
-
-/* delete the info packet from the send list, if it was
- * linked in. */
-static void send_list_del(struct vis_info *info)
-{
- if (!list_empty(&info->send_list)) {
- list_del_init(&info->send_list);
- kref_put(&info->refcount, free_info);
- }
-}
-
-/* tries to add one entry to the receive list. */
-static void recv_list_add(struct bat_priv *bat_priv,
- struct list_head *recv_list, char *mac)
-{
- struct recvlist_node *entry;
-
- entry = kmalloc(sizeof(struct recvlist_node), GFP_ATOMIC);
- if (!entry)
- return;
-
- memcpy(entry->mac, mac, ETH_ALEN);
- spin_lock_bh(&bat_priv->vis_list_lock);
- list_add_tail(&entry->list, recv_list);
- spin_unlock_bh(&bat_priv->vis_list_lock);
-}
-
-/* returns 1 if this mac is in the recv_list */
-static int recv_list_is_in(struct bat_priv *bat_priv,
- struct list_head *recv_list, char *mac)
-{
- struct recvlist_node *entry;
-
- spin_lock_bh(&bat_priv->vis_list_lock);
- list_for_each_entry(entry, recv_list, list) {
- if (memcmp(entry->mac, mac, ETH_ALEN) == 0) {
- spin_unlock_bh(&bat_priv->vis_list_lock);
- return 1;
- }
- }
- spin_unlock_bh(&bat_priv->vis_list_lock);
- return 0;
-}
-
-/* try to add the packet to the vis_hash. return NULL if invalid (e.g. too old,
- * broken.. ). vis hash must be locked outside. is_new is set when the packet
- * is newer than old entries in the hash. */
-static struct vis_info *add_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
- int vis_info_len, int *is_new,
- int make_broadcast)
-{
- struct vis_info *info, *old_info;
- struct vis_packet *search_packet, *old_packet;
- struct vis_info search_elem;
- struct vis_packet *packet;
- int hash_added;
-
- *is_new = 0;
- /* sanity check */
- if (!bat_priv->vis_hash)
- return NULL;
-
- /* see if the packet is already in vis_hash */
- search_elem.skb_packet = dev_alloc_skb(sizeof(struct vis_packet));
- if (!search_elem.skb_packet)
- return NULL;
- search_packet = (struct vis_packet *)skb_put(search_elem.skb_packet,
- sizeof(struct vis_packet));
-
- memcpy(search_packet->vis_orig, vis_packet->vis_orig, ETH_ALEN);
- old_info = hash_find(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
- &search_elem);
- kfree_skb(search_elem.skb_packet);
-
- if (old_info != NULL) {
- old_packet = (struct vis_packet *)old_info->skb_packet->data;
- if (!seq_after(ntohl(vis_packet->seqno),
- ntohl(old_packet->seqno))) {
- if (old_packet->seqno == vis_packet->seqno) {
- recv_list_add(bat_priv, &old_info->recv_list,
- vis_packet->sender_orig);
- return old_info;
- } else {
- /* newer packet is already in hash. */
- return NULL;
- }
- }
- /* remove old entry */
- hash_remove(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
- old_info);
- send_list_del(old_info);
- kref_put(&old_info->refcount, free_info);
- }
-
- info = kmalloc(sizeof(struct vis_info), GFP_ATOMIC);
- if (!info)
- return NULL;
-
- info->skb_packet = dev_alloc_skb(sizeof(struct vis_packet) +
- vis_info_len + sizeof(struct ethhdr));
- if (!info->skb_packet) {
- kfree(info);
- return NULL;
- }
- skb_reserve(info->skb_packet, sizeof(struct ethhdr));
- packet = (struct vis_packet *)skb_put(info->skb_packet,
- sizeof(struct vis_packet) +
- vis_info_len);
-
- kref_init(&info->refcount);
- INIT_LIST_HEAD(&info->send_list);
- INIT_LIST_HEAD(&info->recv_list);
- info->first_seen = jiffies;
- info->bat_priv = bat_priv;
- memcpy(packet, vis_packet, sizeof(struct vis_packet) + vis_info_len);
-
- /* initialize and add new packet. */
- *is_new = 1;
-
- /* Make it a broadcast packet, if required */
- if (make_broadcast)
- memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
-
- /* repair if entries is longer than packet. */
- if (packet->entries * sizeof(struct vis_info_entry) > vis_info_len)
- packet->entries = vis_info_len / sizeof(struct vis_info_entry);
-
- recv_list_add(bat_priv, &info->recv_list, packet->sender_orig);
-
- /* try to add it */
- hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
- info);
- if (hash_added < 0) {
- /* did not work (for some reason) */
- kref_put(&old_info->refcount, free_info);
- info = NULL;
- }
-
- return info;
-}
-
-/* handle the server sync packet, forward if needed. */
-void receive_server_sync_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
- int vis_info_len)
-{
- struct vis_info *info;
- int is_new, make_broadcast;
- int vis_server = atomic_read(&bat_priv->vis_mode);
-
- make_broadcast = (vis_server == VIS_TYPE_SERVER_SYNC);
-
- spin_lock_bh(&bat_priv->vis_hash_lock);
- info = add_packet(bat_priv, vis_packet, vis_info_len,
- &is_new, make_broadcast);
- if (!info)
- goto end;
-
- /* only if we are server ourselves and packet is newer than the one in
- * hash.*/
- if (vis_server == VIS_TYPE_SERVER_SYNC && is_new)
- send_list_add(bat_priv, info);
-end:
- spin_unlock_bh(&bat_priv->vis_hash_lock);
-}
-
-/* handle an incoming client update packet and schedule forward if needed. */
-void receive_client_update_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
- int vis_info_len)
-{
- struct vis_info *info;
- struct vis_packet *packet;
- int is_new;
- int vis_server = atomic_read(&bat_priv->vis_mode);
- int are_target = 0;
-
- /* clients shall not broadcast. */
- if (is_broadcast_ether_addr(vis_packet->target_orig))
- return;
-
- /* Are we the target for this VIS packet? */
- if (vis_server == VIS_TYPE_SERVER_SYNC &&
- is_my_mac(vis_packet->target_orig))
- are_target = 1;
-
- spin_lock_bh(&bat_priv->vis_hash_lock);
- info = add_packet(bat_priv, vis_packet, vis_info_len,
- &is_new, are_target);
-
- if (!info)
- goto end;
- /* note that outdated packets will be dropped at this point. */
-
- packet = (struct vis_packet *)info->skb_packet->data;
-
- /* send only if we're the target server or ... */
- if (are_target && is_new) {
- packet->vis_type = VIS_TYPE_SERVER_SYNC; /* upgrade! */
- send_list_add(bat_priv, info);
-
- /* ... we're not the recipient (and thus need to forward). */
- } else if (!is_my_mac(packet->target_orig)) {
- send_list_add(bat_priv, info);
- }
-
-end:
- spin_unlock_bh(&bat_priv->vis_hash_lock);
-}
-
-/* Walk the originators and find the VIS server with the best tq. Set the packet
- * address to its address and return the best_tq.
- *
- * Must be called with the originator hash locked */
-static int find_best_vis_server(struct bat_priv *bat_priv,
- struct vis_info *info)
-{
- HASHIT(hashit);
- struct element_t *bucket;
- struct orig_node *orig_node;
- struct vis_packet *packet;
- int best_tq = -1;
-
- packet = (struct vis_packet *)info->skb_packet->data;
-
- while (hash_iterate(bat_priv->orig_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- orig_node = bucket->data;
- if ((orig_node) && (orig_node->router) &&
- (orig_node->flags & VIS_SERVER) &&
- (orig_node->router->tq_avg > best_tq)) {
- best_tq = orig_node->router->tq_avg;
- memcpy(packet->target_orig, orig_node->orig, ETH_ALEN);
- }
- }
- return best_tq;
-}
-
-/* Return true if the vis packet is full. */
-static bool vis_packet_full(struct vis_info *info)
-{
- struct vis_packet *packet;
- packet = (struct vis_packet *)info->skb_packet->data;
-
- if (MAX_VIS_PACKET_SIZE / sizeof(struct vis_info_entry)
- < packet->entries + 1)
- return true;
- return false;
-}
-
-/* generates a packet of own vis data,
- * returns 0 on success, -1 if no packet could be generated */
-static int generate_vis_packet(struct bat_priv *bat_priv)
-{
- HASHIT(hashit_local);
- HASHIT(hashit_global);
- struct element_t *bucket;
- struct orig_node *orig_node;
- struct vis_info *info = (struct vis_info *)bat_priv->my_vis_info;
- struct vis_packet *packet = (struct vis_packet *)info->skb_packet->data;
- struct vis_info_entry *entry;
- struct hna_local_entry *hna_local_entry;
- int best_tq = -1;
-
- info->first_seen = jiffies;
- packet->vis_type = atomic_read(&bat_priv->vis_mode);
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
- memcpy(packet->target_orig, broadcast_addr, ETH_ALEN);
- packet->ttl = TTL;
- packet->seqno = htonl(ntohl(packet->seqno) + 1);
- packet->entries = 0;
- skb_trim(info->skb_packet, sizeof(struct vis_packet));
-
- if (packet->vis_type == VIS_TYPE_CLIENT_UPDATE) {
- best_tq = find_best_vis_server(bat_priv, info);
-
- if (best_tq < 0) {
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return -1;
- }
- }
-
- while (hash_iterate(bat_priv->orig_hash, &hashit_global)) {
- bucket = hlist_entry(hashit_global.walk, struct element_t,
- hlist);
- orig_node = bucket->data;
-
- if (!orig_node->router)
- continue;
-
- if (!compare_orig(orig_node->router->addr, orig_node->orig))
- continue;
-
- if (orig_node->router->if_incoming->if_status != IF_ACTIVE)
- continue;
-
- if (orig_node->router->tq_avg < 1)
- continue;
-
- /* fill one entry into buffer. */
- entry = (struct vis_info_entry *)
- skb_put(info->skb_packet, sizeof(*entry));
- memcpy(entry->src,
- orig_node->router->if_incoming->net_dev->dev_addr,
- ETH_ALEN);
- memcpy(entry->dest, orig_node->orig, ETH_ALEN);
- entry->quality = orig_node->router->tq_avg;
- packet->entries++;
-
- if (vis_packet_full(info)) {
- spin_unlock_bh(&bat_priv->orig_hash_lock);
- return 0;
- }
- }
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- spin_lock_bh(&bat_priv->hna_lhash_lock);
- while (hash_iterate(bat_priv->hna_local_hash, &hashit_local)) {
- bucket = hlist_entry(hashit_local.walk, struct element_t,
- hlist);
- hna_local_entry = bucket->data;
- entry = (struct vis_info_entry *)skb_put(info->skb_packet,
- sizeof(*entry));
- memset(entry->src, 0, ETH_ALEN);
- memcpy(entry->dest, hna_local_entry->addr, ETH_ALEN);
- entry->quality = 0; /* 0 means HNA */
- packet->entries++;
-
- if (vis_packet_full(info)) {
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
- return 0;
- }
- }
-
- spin_unlock_bh(&bat_priv->hna_lhash_lock);
- return 0;
-}
-
-/* free old vis packets. Must be called with this vis_hash_lock
- * held */
-static void purge_vis_packets(struct bat_priv *bat_priv)
-{
- HASHIT(hashit);
- struct element_t *bucket;
- struct vis_info *info;
-
- while (hash_iterate(bat_priv->vis_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- info = bucket->data;
-
- /* never purge own data. */
- if (info == bat_priv->my_vis_info)
- continue;
-
- if (time_after(jiffies,
- info->first_seen + VIS_TIMEOUT * HZ)) {
- hash_remove_bucket(bat_priv->vis_hash, &hashit);
- send_list_del(info);
- kref_put(&info->refcount, free_info);
- }
- }
-}
-
-static void broadcast_vis_packet(struct bat_priv *bat_priv,
- struct vis_info *info)
-{
- HASHIT(hashit);
- struct element_t *bucket;
- struct orig_node *orig_node;
- struct vis_packet *packet;
- struct sk_buff *skb;
- struct batman_if *batman_if;
- uint8_t dstaddr[ETH_ALEN];
-
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
- packet = (struct vis_packet *)info->skb_packet->data;
-
- /* send to all routers in range. */
- while (hash_iterate(bat_priv->orig_hash, &hashit)) {
- bucket = hlist_entry(hashit.walk, struct element_t, hlist);
- orig_node = bucket->data;
-
- /* if it's a vis server and reachable, send it. */
- if ((!orig_node) || (!orig_node->router))
- continue;
- if (!(orig_node->flags & VIS_SERVER))
- continue;
- /* don't send it if we already received the packet from
- * this node. */
- if (recv_list_is_in(bat_priv, &info->recv_list,
- orig_node->orig))
- continue;
-
- memcpy(packet->target_orig, orig_node->orig, ETH_ALEN);
- batman_if = orig_node->router->if_incoming;
- memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- skb = skb_clone(info->skb_packet, GFP_ATOMIC);
- if (skb)
- send_skb_packet(skb, batman_if, dstaddr);
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
-
- }
-
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-}
-
-static void unicast_vis_packet(struct bat_priv *bat_priv,
- struct vis_info *info)
-{
- struct orig_node *orig_node;
- struct sk_buff *skb;
- struct vis_packet *packet;
- struct batman_if *batman_if;
- uint8_t dstaddr[ETH_ALEN];
-
- spin_lock_bh(&bat_priv->orig_hash_lock);
- packet = (struct vis_packet *)info->skb_packet->data;
- orig_node = ((struct orig_node *)hash_find(bat_priv->orig_hash,
- compare_orig, choose_orig,
- packet->target_orig));
-
- if ((!orig_node) || (!orig_node->router))
- goto out;
-
- /* don't lock while sending the packets ... we therefore
- * copy the required data before sending */
- batman_if = orig_node->router->if_incoming;
- memcpy(dstaddr, orig_node->router->addr, ETH_ALEN);
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-
- skb = skb_clone(info->skb_packet, GFP_ATOMIC);
- if (skb)
- send_skb_packet(skb, batman_if, dstaddr);
-
- return;
-
-out:
- spin_unlock_bh(&bat_priv->orig_hash_lock);
-}
-
-/* only send one vis packet. called from send_vis_packets() */
-static void send_vis_packet(struct bat_priv *bat_priv, struct vis_info *info)
-{
- struct vis_packet *packet;
-
- packet = (struct vis_packet *)info->skb_packet->data;
- if (packet->ttl < 2) {
- pr_debug("Error - can't send vis packet: ttl exceeded\n");
- return;
- }
-
- memcpy(packet->sender_orig, bat_priv->primary_if->net_dev->dev_addr,
- ETH_ALEN);
- packet->ttl--;
-
- if (is_broadcast_ether_addr(packet->target_orig))
- broadcast_vis_packet(bat_priv, info);
- else
- unicast_vis_packet(bat_priv, info);
- packet->ttl++; /* restore TTL */
-}
-
-/* called from timer; send (and maybe generate) vis packet. */
-static void send_vis_packets(struct work_struct *work)
-{
- struct delayed_work *delayed_work =
- container_of(work, struct delayed_work, work);
- struct bat_priv *bat_priv =
- container_of(delayed_work, struct bat_priv, vis_work);
- struct vis_info *info, *temp;
-
- spin_lock_bh(&bat_priv->vis_hash_lock);
- purge_vis_packets(bat_priv);
-
- if (generate_vis_packet(bat_priv) == 0) {
- /* schedule if generation was successful */
- send_list_add(bat_priv, bat_priv->my_vis_info);
- }
-
- list_for_each_entry_safe(info, temp, &bat_priv->vis_send_list,
- send_list) {
-
- kref_get(&info->refcount);
- spin_unlock_bh(&bat_priv->vis_hash_lock);
-
- if (bat_priv->primary_if)
- send_vis_packet(bat_priv, info);
-
- spin_lock_bh(&bat_priv->vis_hash_lock);
- send_list_del(info);
- kref_put(&info->refcount, free_info);
- }
- spin_unlock_bh(&bat_priv->vis_hash_lock);
- start_vis_timer(bat_priv);
-}
-
-/* init the vis server. this may only be called when if_list is already
- * initialized (e.g. bat0 is initialized, interfaces have been added) */
-int vis_init(struct bat_priv *bat_priv)
-{
- struct vis_packet *packet;
- int hash_added;
-
- if (bat_priv->vis_hash)
- return 1;
-
- spin_lock_bh(&bat_priv->vis_hash_lock);
-
- bat_priv->vis_hash = hash_new(256);
- if (!bat_priv->vis_hash) {
- pr_err("Can't initialize vis_hash\n");
- goto err;
- }
-
- bat_priv->my_vis_info = kmalloc(MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
- if (!bat_priv->my_vis_info) {
- pr_err("Can't initialize vis packet\n");
- goto err;
- }
-
- bat_priv->my_vis_info->skb_packet = dev_alloc_skb(
- sizeof(struct vis_packet) +
- MAX_VIS_PACKET_SIZE +
- sizeof(struct ethhdr));
- if (!bat_priv->my_vis_info->skb_packet)
- goto free_info;
-
- skb_reserve(bat_priv->my_vis_info->skb_packet, sizeof(struct ethhdr));
- packet = (struct vis_packet *)skb_put(
- bat_priv->my_vis_info->skb_packet,
- sizeof(struct vis_packet));
-
- /* prefill the vis info */
- bat_priv->my_vis_info->first_seen = jiffies -
- msecs_to_jiffies(VIS_INTERVAL);
- INIT_LIST_HEAD(&bat_priv->my_vis_info->recv_list);
- INIT_LIST_HEAD(&bat_priv->my_vis_info->send_list);
- kref_init(&bat_priv->my_vis_info->refcount);
- bat_priv->my_vis_info->bat_priv = bat_priv;
- packet->version = COMPAT_VERSION;
- packet->packet_type = BAT_VIS;
- packet->ttl = TTL;
- packet->seqno = 0;
- packet->entries = 0;
-
- INIT_LIST_HEAD(&bat_priv->vis_send_list);
-
- hash_added = hash_add(bat_priv->vis_hash, vis_info_cmp, vis_info_choose,
- bat_priv->my_vis_info);
- if (hash_added < 0) {
- pr_err("Can't add own vis packet into hash\n");
- /* not in hash, need to remove it manually. */
- kref_put(&bat_priv->my_vis_info->refcount, free_info);
- goto err;
- }
-
- spin_unlock_bh(&bat_priv->vis_hash_lock);
- start_vis_timer(bat_priv);
- return 1;
-
-free_info:
- kfree(bat_priv->my_vis_info);
- bat_priv->my_vis_info = NULL;
-err:
- spin_unlock_bh(&bat_priv->vis_hash_lock);
- vis_quit(bat_priv);
- return 0;
-}
-
-/* Decrease the reference count on a hash item info */
-static void free_info_ref(void *data, void *arg)
-{
- struct vis_info *info = data;
-
- send_list_del(info);
- kref_put(&info->refcount, free_info);
-}
-
-/* shutdown vis-server */
-void vis_quit(struct bat_priv *bat_priv)
-{
- if (!bat_priv->vis_hash)
- return;
-
- cancel_delayed_work_sync(&bat_priv->vis_work);
-
- spin_lock_bh(&bat_priv->vis_hash_lock);
- /* properly remove, kill timers ... */
- hash_delete(bat_priv->vis_hash, free_info_ref, NULL);
- bat_priv->vis_hash = NULL;
- bat_priv->my_vis_info = NULL;
- spin_unlock_bh(&bat_priv->vis_hash_lock);
-}
-
-/* schedule packets for (re)transmission */
-static void start_vis_timer(struct bat_priv *bat_priv)
-{
- INIT_DELAYED_WORK(&bat_priv->vis_work, send_vis_packets);
- queue_delayed_work(bat_event_workqueue, &bat_priv->vis_work,
- msecs_to_jiffies(VIS_INTERVAL));
-}
+++ /dev/null
-/*
- * Copyright (C) 2008-2010 B.A.T.M.A.N. contributors:
- *
- * Simon Wunderlich, Marek Lindner
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA
- *
- */
-
-#ifndef _NET_BATMAN_ADV_VIS_H_
-#define _NET_BATMAN_ADV_VIS_H_
-
-#define VIS_TIMEOUT 200 /* timeout of vis packets in seconds */
-
-int vis_seq_print_text(struct seq_file *seq, void *offset);
-void receive_server_sync_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
- int vis_info_len);
-void receive_client_update_packet(struct bat_priv *bat_priv,
- struct vis_packet *vis_packet,
- int vis_info_len);
-int vis_init(struct bat_priv *bat_priv);
-void vis_quit(struct bat_priv *bat_priv);
-
-#endif /* _NET_BATMAN_ADV_VIS_H_ */
projects / linux-beck.git / commitdiff