Socket options
==============
+DCCP_SOCKOPT_QPOLICY_ID sets the dequeuing policy for outgoing packets. It takes
+a policy ID as argument and can only be set before the connection (i.e. changes
+during an established connection are not supported). Currently, two policies are
+defined: the "simple" policy (DCCPQ_POLICY_SIMPLE), which does nothing special,
+and a priority-based variant (DCCPQ_POLICY_PRIO). The latter allows to pass an
+u32 priority value as ancillary data to sendmsg(), where higher numbers indicate
+a higher packet priority (similar to SO_PRIORITY). This ancillary data needs to
+be formatted using a cmsg(3) message header filled in as follows:
+ cmsg->cmsg_level = SOL_DCCP;
+ cmsg->cmsg_type = DCCP_SCM_PRIORITY;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(uint32_t)); /* or CMSG_LEN(4) */
+
+DCCP_SOCKOPT_QPOLICY_TXQLEN sets the maximum length of the output queue. A zero
+value is always interpreted as unbounded queue length. If different from zero,
+the interpretation of this parameter depends on the current dequeuing policy
+(see above): the "simple" policy will enforce a fixed queue size by returning
+EAGAIN, whereas the "prio" policy enforces a fixed queue length by dropping the
+lowest-priority packet first. The default value for this parameter is
+initialised from /proc/sys/net/dccp/default/tx_qlen.
+
DCCP_SOCKOPT_SERVICE sets the service. The specification mandates use of
service codes (RFC 4340, sec. 8.1.2); if this socket option is not set,
the socket will fall back to 0 (which means that no meaningful service code
Count buffering overhead as bytes/2^tcp_adv_win_scale
(if tcp_adv_win_scale > 0) or bytes-bytes/2^(-tcp_adv_win_scale),
if it is <= 0.
+ Possible values are [-31, 31], inclusive.
Default: 2
tcp_allowed_congestion_control - STRING
BONDING DRIVER
M: Jay Vosburgh <fubar@us.ibm.com>
-L: bonding-devel@lists.sourceforge.net
+L: netdev@vger.kernel.org
W: http://sourceforge.net/projects/bonding/
S: Supported
F: drivers/net/bonding/
memcpy(atmdev->esi, eeprom_mac(lanai), ESI_LEN);
lanai_timed_poll_start(lanai);
printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d, base=0x%lx, irq=%u "
- "(%02X-%02X-%02X-%02X-%02X-%02X)\n", lanai->number,
- (int) lanai->pci->revision, (unsigned long) lanai->base,
- lanai->pci->irq,
- atmdev->esi[0], atmdev->esi[1], atmdev->esi[2],
- atmdev->esi[3], atmdev->esi[4], atmdev->esi[5]);
+ "(%pMF)\n", lanai->number, (int) lanai->pci->revision,
+ (unsigned long) lanai->base, lanai->pci->irq, atmdev->esi);
printk(KERN_NOTICE DEV_LABEL "(itf %d): LANAI%s, serialno=%u(0x%X), "
"board_rev=%d\n", lanai->number,
lanai->type==lanai2 ? "2" : "HB", (unsigned int) lanai->serialno,
#ifdef CONFIG_PCI
#include <linux/pci.h>
-static struct pci_device_id hisax_pci_tbl[] __devinitdata = {
+static struct pci_device_id hisax_pci_tbl[] __devinitdata __used = {
#ifdef CONFIG_HISAX_FRITZPCI
{PCI_VDEVICE(AVM, PCI_DEVICE_ID_AVM_A1) },
#endif
static int __init icn_init(void)
{
char *p;
- char rev[10];
+ char rev[20];
memset(&dev, 0, sizeof(icn_dev));
dev.memaddr = (membase & 0x0ffc000);
spin_lock_init(&dev.devlock);
if ((p = strchr(revision, ':'))) {
- strcpy(rev, p + 1);
+ strncpy(rev, p + 1, 20);
p = strchr(rev, '$');
- *p = 0;
+ if (p)
+ *p = 0;
} else
strcpy(rev, " ??? ");
printk(KERN_NOTICE "ICN-ISDN-driver Rev%smem=0x%08lx\n", rev,
depends on PCI
select MII
---help---
- This is a gigabit ethernet driver for Topcliff PCH.
- Topcliff PCH is the platform controller hub that is used in Intel's
+ This is a gigabit ethernet driver for EG20T PCH.
+ EG20T PCH is the platform controller hub that is used in Intel's
general embedded platform.
- Topcliff PCH has Gigabit Ethernet interface.
+ EG20T PCH has Gigabit Ethernet interface.
Using this interface, it is able to access system devices connected
to Gigabit Ethernet.
This driver enables Gigabit Ethernet function.
return 0;
}
-/*
- * Get the current statistics.
- */
-static struct net_device_stats *am79c961_getstats (struct net_device *dev)
-{
- return &dev->stats;
-}
-
static void am79c961_mc_hash(char *addr, unsigned short *hash)
{
if (addr[0] & 0x01) {
.ndo_open = am79c961_open,
.ndo_stop = am79c961_close,
.ndo_start_xmit = am79c961_sendpacket,
- .ndo_get_stats = am79c961_getstats,
.ndo_set_multicast_list = am79c961_setmulticastlist,
.ndo_tx_timeout = am79c961_timeout,
.ndo_validate_addr = eth_validate_addr,
addr[0] = addr[1] = 0;
AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data);
if (atl1c_check_eeprom_exist(hw)) {
- if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c_b) {
+ if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) {
/* Enable OTP CLK */
if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) {
otp_ctrl_data |= OTP_CTRL_CLK_EN;
spin_lock_irqsave(&aup->lock, flags);
if (force_reset || (!aup->mac_enabled)) {
- writel(MAC_EN_CLOCK_ENABLE, &aup->enable);
+ writel(MAC_EN_CLOCK_ENABLE, aup->enable);
au_sync_delay(2);
writel((MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
- | MAC_EN_CLOCK_ENABLE), &aup->enable);
+ | MAC_EN_CLOCK_ENABLE), aup->enable);
au_sync_delay(2);
aup->mac_enabled = 1;
au1000_hard_stop(dev);
- writel(MAC_EN_CLOCK_ENABLE, &aup->enable);
+ writel(MAC_EN_CLOCK_ENABLE, aup->enable);
au_sync_delay(2);
- writel(0, &aup->enable);
+ writel(0, aup->enable);
au_sync_delay(2);
aup->tx_full = 0;
/* set a random MAC now in case platform_data doesn't provide one */
random_ether_addr(dev->dev_addr);
- writel(0, &aup->enable);
+ writel(0, aup->enable);
aup->mac_enabled = 0;
pd = pdev->dev.platform_data;
__b44_set_flow_ctrl(bp, pause_enab);
}
-#ifdef SSB_DRIVER_MIPS
-extern char *nvram_get(char *name);
+#ifdef CONFIG_BCM47XX
+#include <asm/mach-bcm47xx/nvram.h>
static void b44_wap54g10_workaround(struct b44 *bp)
{
- const char *str;
+ char buf[20];
u32 val;
int err;
* see https://dev.openwrt.org/ticket/146
* check and reset bit "isolate"
*/
- str = nvram_get("boardnum");
- if (!str)
+ if (nvram_getenv("boardnum", buf, sizeof(buf)) < 0)
return;
- if (simple_strtoul(str, NULL, 0) == 2) {
+ if (simple_strtoul(buf, NULL, 0) == 2) {
err = __b44_readphy(bp, 0, MII_BMCR, &val);
if (err)
goto error;
struct be_rx_stats stats;
u8 rss_id;
bool rx_post_starved; /* Zero rx frags have been posted to BE */
- u32 cache_line_barrier[16];
+ u16 last_frag_index;
+ u16 rsvd;
+ u32 cache_line_barrier[15];
};
struct be_vf_cfg {
spin_lock(&adapter->mbox_lock);
wrb = (u8 *)wrb_from_mbox(adapter);
- if (lancer_chip(adapter)) {
- *wrb++ = 0xFF;
- *wrb++ = 0x34;
- *wrb++ = 0x12;
- *wrb++ = 0xFF;
- *wrb++ = 0xFF;
- *wrb++ = 0x78;
- *wrb++ = 0x56;
- *wrb = 0xFF;
- } else {
- *wrb++ = 0xFF;
- *wrb++ = 0x12;
- *wrb++ = 0x34;
- *wrb++ = 0xFF;
- *wrb++ = 0xFF;
- *wrb++ = 0x56;
- *wrb++ = 0x78;
- *wrb = 0xFF;
- }
+ *wrb++ = 0xFF;
+ *wrb++ = 0x12;
+ *wrb++ = 0x34;
+ *wrb++ = 0xFF;
+ *wrb++ = 0xFF;
+ *wrb++ = 0x56;
+ *wrb++ = 0x78;
+ *wrb = 0xFF;
status = be_mbox_notify_wait(adapter);
i = 0;
netdev_for_each_mc_addr(ha, netdev)
- memcpy(req->mac[i].byte, ha->addr, ETH_ALEN);
+ memcpy(req->mac[i++].byte, ha->addr, ETH_ALEN);
} else {
req->promiscuous = 1;
}
rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
- for (i = 0; i < num_rcvd; i++) {
- page_info = get_rx_page_info(adapter, rxo, rxq_idx);
- put_page(page_info->page);
- memset(page_info, 0, sizeof(*page_info));
- index_inc(&rxq_idx, rxq->len);
+ /* Skip out-of-buffer compl(lancer) or flush compl(BE) */
+ if (likely(rxq_idx != rxo->last_frag_index && num_rcvd != 0)) {
+
+ rxo->last_frag_index = rxq_idx;
+
+ for (i = 0; i < num_rcvd; i++) {
+ page_info = get_rx_page_info(adapter, rxo, rxq_idx);
+ put_page(page_info->page);
+ memset(page_info, 0, sizeof(*page_info));
+ index_inc(&rxq_idx, rxq->len);
+ }
}
}
u8 vtm;
num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
- /* Is it a flush compl that has no data */
- if (unlikely(num_rcvd == 0))
- return;
skb = netdev_alloc_skb_ip_align(adapter->netdev, BE_HDR_LEN);
if (unlikely(!skb)) {
u8 pkt_type;
num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp);
- /* Is it a flush compl that has no data */
- if (unlikely(num_rcvd == 0))
- return;
-
pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp);
vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp);
rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp);
while ((rxcp = be_rx_compl_get(rxo)) != NULL) {
be_rx_compl_discard(adapter, rxo, rxcp);
be_rx_compl_reset(rxcp);
- be_cq_notify(adapter, rx_cq->id, true, 1);
+ be_cq_notify(adapter, rx_cq->id, false, 1);
}
/* Then free posted rx buffer that were not used */
adapter->big_page_size = (1 << get_order(rx_frag_size)) * PAGE_SIZE;
for_all_rx_queues(adapter, rxo, i) {
rxo->adapter = adapter;
+ /* Init last_frag_index so that the frag index in the first
+ * completion will never match */
+ rxo->last_frag_index = 0xffff;
rxo->rx_eq.max_eqd = BE_MAX_EQD;
rxo->rx_eq.enable_aic = true;
return IRQ_HANDLED;
}
-static inline bool do_gro(struct be_adapter *adapter, struct be_rx_obj *rxo,
- struct be_eth_rx_compl *rxcp)
+static inline bool do_gro(struct be_rx_obj *rxo,
+ struct be_eth_rx_compl *rxcp, u8 err)
{
- int err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
int tcp_frame = AMAP_GET_BITS(struct amap_eth_rx_compl, tcpf, rxcp);
if (err)
struct be_queue_info *rx_cq = &rxo->cq;
struct be_eth_rx_compl *rxcp;
u32 work_done;
+ u16 frag_index, num_rcvd;
+ u8 err;
rxo->stats.rx_polls++;
for (work_done = 0; work_done < budget; work_done++) {
if (!rxcp)
break;
- if (do_gro(adapter, rxo, rxcp))
- be_rx_compl_process_gro(adapter, rxo, rxcp);
- else
- be_rx_compl_process(adapter, rxo, rxcp);
+ err = AMAP_GET_BITS(struct amap_eth_rx_compl, err, rxcp);
+ frag_index = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx,
+ rxcp);
+ num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags,
+ rxcp);
+
+ /* Skip out-of-buffer compl(lancer) or flush compl(BE) */
+ if (likely(frag_index != rxo->last_frag_index &&
+ num_rcvd != 0)) {
+ rxo->last_frag_index = frag_index;
+
+ if (do_gro(rxo, rxcp, err))
+ be_rx_compl_process_gro(adapter, rxo, rxcp);
+ else
+ be_rx_compl_process(adapter, rxo, rxcp);
+ }
be_rx_compl_reset(rxcp);
}
int i;
netdev->features |= NETIF_F_SG | NETIF_F_HW_VLAN_RX | NETIF_F_TSO |
- NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | NETIF_F_HW_CSUM |
+ NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
NETIF_F_GRO | NETIF_F_TSO6;
- netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_HW_CSUM;
+ netdev->vlan_features |= NETIF_F_SG | NETIF_F_TSO |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
if (lancer_chip(adapter))
netdev->vlan_features |= NETIF_F_TSO6;
pci_set_drvdata(pdev, adapter);
status = be_dev_family_check(adapter);
- if (!status)
+ if (status)
goto free_netdev;
adapter->netdev = netdev;
* (you will need to reboot afterwards) */
/* #define BNX2X_STOP_ON_ERROR */
-#define DRV_MODULE_VERSION "1.60.00-6"
-#define DRV_MODULE_RELDATE "2010/11/29"
+#define DRV_MODULE_VERSION "1.60.00-7"
+#define DRV_MODULE_RELDATE "2010/12/08"
#define BNX2X_BC_VER 0x040200
#define BNX2X_MULTI_QUEUE
#define BNX2X_ILT_ZALLOC(x, y, size) \
do { \
- x = pci_alloc_consistent(bp->pdev, size, y); \
+ x = dma_alloc_coherent(&bp->pdev->dev, size, y, GFP_KERNEL); \
if (x) \
memset(x, 0, size); \
} while (0)
#define BNX2X_ILT_FREE(x, y, size) \
do { \
if (x) { \
- pci_free_consistent(bp->pdev, size, x, y); \
+ dma_free_coherent(&bp->pdev->dev, size, x, y); \
x = NULL; \
y = 0; \
} \
}
#endif
-static inline void bnx2x_set_pbd_gso_e2(struct sk_buff *skb,
- struct eth_tx_parse_bd_e2 *pbd,
- u32 xmit_type)
+static inline void bnx2x_set_pbd_gso_e2(struct sk_buff *skb, u32 *parsing_data,
+ u32 xmit_type)
{
- pbd->parsing_data |= cpu_to_le16(skb_shinfo(skb)->gso_size) <<
- ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT;
+ *parsing_data |= (skb_shinfo(skb)->gso_size <<
+ ETH_TX_PARSE_BD_E2_LSO_MSS_SHIFT) &
+ ETH_TX_PARSE_BD_E2_LSO_MSS;
if ((xmit_type & XMIT_GSO_V6) &&
(ipv6_hdr(skb)->nexthdr == NEXTHDR_IPV6))
- pbd->parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
+ *parsing_data |= ETH_TX_PARSE_BD_E2_IPV6_WITH_EXT_HDR;
}
/**
* @return header len
*/
static inline u8 bnx2x_set_pbd_csum_e2(struct bnx2x *bp, struct sk_buff *skb,
- struct eth_tx_parse_bd_e2 *pbd,
- u32 xmit_type)
+ u32 *parsing_data, u32 xmit_type)
{
- pbd->parsing_data |= cpu_to_le16(tcp_hdrlen(skb)/4) <<
- ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT;
+ *parsing_data |= ((tcp_hdrlen(skb)/4) <<
+ ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW_SHIFT) &
+ ETH_TX_PARSE_BD_E2_TCP_HDR_LENGTH_DW;
- pbd->parsing_data |= cpu_to_le16(((unsigned char *)tcp_hdr(skb) -
- skb->data) / 2) <<
- ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT;
+ *parsing_data |= ((((u8 *)tcp_hdr(skb) - skb->data) / 2) <<
+ ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W_SHIFT) &
+ ETH_TX_PARSE_BD_E2_TCP_HDR_START_OFFSET_W;
return skb_transport_header(skb) + tcp_hdrlen(skb) - skb->data;
}
struct eth_tx_bd *tx_data_bd, *total_pkt_bd = NULL;
struct eth_tx_parse_bd_e1x *pbd_e1x = NULL;
struct eth_tx_parse_bd_e2 *pbd_e2 = NULL;
+ u32 pbd_e2_parsing_data = 0;
u16 pkt_prod, bd_prod;
int nbd, fp_index;
dma_addr_t mapping;
memset(pbd_e2, 0, sizeof(struct eth_tx_parse_bd_e2));
/* Set PBD in checksum offload case */
if (xmit_type & XMIT_CSUM)
- hlen = bnx2x_set_pbd_csum_e2(bp,
- skb, pbd_e2, xmit_type);
+ hlen = bnx2x_set_pbd_csum_e2(bp, skb,
+ &pbd_e2_parsing_data,
+ xmit_type);
} else {
pbd_e1x = &fp->tx_desc_ring[bd_prod].parse_bd_e1x;
memset(pbd_e1x, 0, sizeof(struct eth_tx_parse_bd_e1x));
bd_prod = bnx2x_tx_split(bp, fp, tx_buf, &tx_start_bd,
hlen, bd_prod, ++nbd);
if (CHIP_IS_E2(bp))
- bnx2x_set_pbd_gso_e2(skb, pbd_e2, xmit_type);
+ bnx2x_set_pbd_gso_e2(skb, &pbd_e2_parsing_data,
+ xmit_type);
else
bnx2x_set_pbd_gso(skb, pbd_e1x, xmit_type);
}
+
+ /* Set the PBD's parsing_data field if not zero
+ * (for the chips newer than 57711).
+ */
+ if (pbd_e2_parsing_data)
+ pbd_e2->parsing_data = cpu_to_le32(pbd_e2_parsing_data);
+
tx_data_bd = (struct eth_tx_bd *)tx_start_bd;
/* Handle fragmented skb */
/****************************************************************************
* SRC initializations
****************************************************************************/
-
+#ifdef BCM_CNIC
/* called during init func stage */
static void bnx2x_src_init_t2(struct bnx2x *bp, struct src_ent *t2,
dma_addr_t t2_mapping, int src_cid_count)
U64_HI((u64)t2_mapping +
(src_cid_count-1) * sizeof(struct src_ent)));
}
-
+#endif
#endif /* BNX2X_INIT_OPS_H */
dev->netdev_ops = &bnx2x_netdev_ops;
bnx2x_set_ethtool_ops(dev);
dev->features |= NETIF_F_SG;
- dev->features |= NETIF_F_HW_CSUM;
+ dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
if (bp->flags & USING_DAC_FLAG)
dev->features |= NETIF_F_HIGHDMA;
dev->features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
dev->features |= (NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX);
dev->vlan_features |= NETIF_F_SG;
- dev->vlan_features |= NETIF_F_HW_CSUM;
+ dev->vlan_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
if (bp->flags & USING_DAC_FLAG)
dev->vlan_features |= NETIF_F_HIGHDMA;
dev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO_ECN);
/* If this is the first slave, then we need to set the master's hardware
* address to be the same as the slave's. */
- if (bond->slave_cnt == 0)
+ if (is_zero_ether_addr(bond->dev->dev_addr))
memcpy(bond->dev->dev_addr, slave_dev->dev_addr,
slave_dev->addr_len);
* License terms: GNU General Public License (GPL) version 2
*/
-#define pr_fmt(fmt) KBUILD_MODNAME ":" __func__ "():" fmt
+#define pr_fmt(fmt) KBUILD_MODNAME ":" fmt
#include <linux/version.h>
#include <linux/init.h>
* License terms: GNU General Public License (GPL) version 2
*/
-#define pr_fmt(fmt) KBUILD_MODNAME ":" __func__ "():" fmt
+#define pr_fmt(fmt) KBUILD_MODNAME ":" fmt
#include <linux/spinlock.h>
#include <linux/sched.h>
This driver can also be built as a module. If so, the module
will be called vcan.
+config CAN_SLCAN
+ tristate "Serial / USB serial CAN Adaptors (slcan)"
+ depends on CAN
+ default N
+ ---help---
+ CAN driver for several 'low cost' CAN interfaces that are attached
+ via serial lines or via USB-to-serial adapters using the LAWICEL
+ ASCII protocol. The driver implements the tty linediscipline N_SLCAN.
+
+ As only the sending and receiving of CAN frames is implemented, this
+ driver should work with the (serial/USB) CAN hardware from:
+ www.canusb.com / www.can232.com / www.mictronic.com / www.canhack.de
+
+ Userspace tools to attach the SLCAN line discipline (slcan_attach,
+ slcand) can be found in the can-utils at the SocketCAN SVN, see
+ http://developer.berlios.de/projects/socketcan for details.
+
+ The slcan driver supports up to 10 CAN netdevices by default which
+ can be changed by the 'maxdev=xx' module option. This driver can
+ also be built as a module. If so, the module will be called slcan.
+
config CAN_DEV
tristate "Platform CAN drivers with Netlink support"
depends on CAN
#
obj-$(CONFIG_CAN_VCAN) += vcan.o
+obj-$(CONFIG_CAN_SLCAN) += slcan.o
obj-$(CONFIG_CAN_DEV) += can-dev.o
can-dev-y := dev.o
--- /dev/null
+/*
+ * slcan.c - serial line CAN interface driver (using tty line discipline)
+ *
+ * This file is derived from linux/drivers/net/slip.c
+ *
+ * slip.c Authors : Laurence Culhane <loz@holmes.demon.co.uk>
+ * Fred N. van Kempen <waltje@uwalt.nl.mugnet.org>
+ * slcan.c Author : Oliver Hartkopp <socketcan@hartkopp.net>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * 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.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307. You can also get it
+ * at http://www.gnu.org/licenses/gpl.html
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * Send feedback to <socketcan-users@lists.berlios.de>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+
+#include <asm/system.h>
+#include <linux/uaccess.h>
+#include <linux/bitops.h>
+#include <linux/string.h>
+#include <linux/tty.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/if_arp.h>
+#include <linux/if_ether.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/can.h>
+
+static __initdata const char banner[] =
+ KERN_INFO "slcan: serial line CAN interface driver\n";
+
+MODULE_ALIAS_LDISC(N_SLCAN);
+MODULE_DESCRIPTION("serial line CAN interface");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Oliver Hartkopp <socketcan@hartkopp.net>");
+
+#define SLCAN_MAGIC 0x53CA
+
+static int maxdev = 10; /* MAX number of SLCAN channels;
+ This can be overridden with
+ insmod slcan.ko maxdev=nnn */
+module_param(maxdev, int, 0);
+MODULE_PARM_DESC(maxdev, "Maximum number of slcan interfaces");
+
+/* maximum rx buffer len: extended CAN frame with timestamp */
+#define SLC_MTU (sizeof("T1111222281122334455667788EA5F\r")+1)
+
+struct slcan {
+ int magic;
+
+ /* Various fields. */
+ struct tty_struct *tty; /* ptr to TTY structure */
+ struct net_device *dev; /* easy for intr handling */
+ spinlock_t lock;
+
+ /* These are pointers to the malloc()ed frame buffers. */
+ unsigned char rbuff[SLC_MTU]; /* receiver buffer */
+ int rcount; /* received chars counter */
+ unsigned char xbuff[SLC_MTU]; /* transmitter buffer */
+ unsigned char *xhead; /* pointer to next XMIT byte */
+ int xleft; /* bytes left in XMIT queue */
+
+ unsigned long flags; /* Flag values/ mode etc */
+#define SLF_INUSE 0 /* Channel in use */
+#define SLF_ERROR 1 /* Parity, etc. error */
+
+ unsigned char leased;
+ dev_t line;
+ pid_t pid;
+};
+
+static struct net_device **slcan_devs;
+
+ /************************************************************************
+ * SLCAN ENCAPSULATION FORMAT *
+ ************************************************************************/
+
+/*
+ * A CAN frame has a can_id (11 bit standard frame format OR 29 bit extended
+ * frame format) a data length code (can_dlc) which can be from 0 to 8
+ * and up to <can_dlc> data bytes as payload.
+ * Additionally a CAN frame may become a remote transmission frame if the
+ * RTR-bit is set. This causes another ECU to send a CAN frame with the
+ * given can_id.
+ *
+ * The SLCAN ASCII representation of these different frame types is:
+ * <type> <id> <dlc> <data>*
+ *
+ * Extended frames (29 bit) are defined by capital characters in the type.
+ * RTR frames are defined as 'r' types - normal frames have 't' type:
+ * t => 11 bit data frame
+ * r => 11 bit RTR frame
+ * T => 29 bit data frame
+ * R => 29 bit RTR frame
+ *
+ * The <id> is 3 (standard) or 8 (extended) bytes in ASCII Hex (base64).
+ * The <dlc> is a one byte ASCII number ('0' - '8')
+ * The <data> section has at much ASCII Hex bytes as defined by the <dlc>
+ *
+ * Examples:
+ *
+ * t1230 : can_id 0x123, can_dlc 0, no data
+ * t4563112233 : can_id 0x456, can_dlc 3, data 0x11 0x22 0x33
+ * T12ABCDEF2AA55 : extended can_id 0x12ABCDEF, can_dlc 2, data 0xAA 0x55
+ * r1230 : can_id 0x123, can_dlc 0, no data, remote transmission request
+ *
+ */
+
+ /************************************************************************
+ * STANDARD SLCAN DECAPSULATION *
+ ************************************************************************/
+
+static int asc2nibble(char c)
+{
+
+ if ((c >= '0') && (c <= '9'))
+ return c - '0';
+
+ if ((c >= 'A') && (c <= 'F'))
+ return c - 'A' + 10;
+
+ if ((c >= 'a') && (c <= 'f'))
+ return c - 'a' + 10;
+
+ return 16; /* error */
+}
+
+/* Send one completely decapsulated can_frame to the network layer */
+static void slc_bump(struct slcan *sl)
+{
+ struct sk_buff *skb;
+ struct can_frame cf;
+ int i, dlc_pos, tmp;
+ unsigned long ultmp;
+ char cmd = sl->rbuff[0];
+
+ if ((cmd != 't') && (cmd != 'T') && (cmd != 'r') && (cmd != 'R'))
+ return;
+
+ if (cmd & 0x20) /* tiny chars 'r' 't' => standard frame format */
+ dlc_pos = 4; /* dlc position tiiid */
+ else
+ dlc_pos = 9; /* dlc position Tiiiiiiiid */
+
+ if (!((sl->rbuff[dlc_pos] >= '0') && (sl->rbuff[dlc_pos] < '9')))
+ return;
+
+ cf.can_dlc = sl->rbuff[dlc_pos] - '0'; /* get can_dlc from ASCII val */
+
+ sl->rbuff[dlc_pos] = 0; /* terminate can_id string */
+
+ if (strict_strtoul(sl->rbuff+1, 16, &ultmp))
+ return;
+
+ cf.can_id = ultmp;
+
+ if (!(cmd & 0x20)) /* NO tiny chars => extended frame format */
+ cf.can_id |= CAN_EFF_FLAG;
+
+ if ((cmd | 0x20) == 'r') /* RTR frame */
+ cf.can_id |= CAN_RTR_FLAG;
+
+ *(u64 *) (&cf.data) = 0; /* clear payload */
+
+ for (i = 0, dlc_pos++; i < cf.can_dlc; i++) {
+
+ tmp = asc2nibble(sl->rbuff[dlc_pos++]);
+ if (tmp > 0x0F)
+ return;
+ cf.data[i] = (tmp << 4);
+ tmp = asc2nibble(sl->rbuff[dlc_pos++]);
+ if (tmp > 0x0F)
+ return;
+ cf.data[i] |= tmp;
+ }
+
+
+ skb = dev_alloc_skb(sizeof(struct can_frame));
+ if (!skb)
+ return;
+
+ skb->dev = sl->dev;
+ skb->protocol = htons(ETH_P_CAN);
+ skb->pkt_type = PACKET_BROADCAST;
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+ memcpy(skb_put(skb, sizeof(struct can_frame)),
+ &cf, sizeof(struct can_frame));
+ netif_rx(skb);
+
+ sl->dev->stats.rx_packets++;
+ sl->dev->stats.rx_bytes += cf.can_dlc;
+}
+
+/* parse tty input stream */
+static void slcan_unesc(struct slcan *sl, unsigned char s)
+{
+
+ if ((s == '\r') || (s == '\a')) { /* CR or BEL ends the pdu */
+ if (!test_and_clear_bit(SLF_ERROR, &sl->flags) &&
+ (sl->rcount > 4)) {
+ slc_bump(sl);
+ }
+ sl->rcount = 0;
+ } else {
+ if (!test_bit(SLF_ERROR, &sl->flags)) {
+ if (sl->rcount < SLC_MTU) {
+ sl->rbuff[sl->rcount++] = s;
+ return;
+ } else {
+ sl->dev->stats.rx_over_errors++;
+ set_bit(SLF_ERROR, &sl->flags);
+ }
+ }
+ }
+}
+
+ /************************************************************************
+ * STANDARD SLCAN ENCAPSULATION *
+ ************************************************************************/
+
+/* Encapsulate one can_frame and stuff into a TTY queue. */
+static void slc_encaps(struct slcan *sl, struct can_frame *cf)
+{
+ int actual, idx, i;
+ char cmd;
+
+ if (cf->can_id & CAN_RTR_FLAG)
+ cmd = 'R'; /* becomes 'r' in standard frame format */
+ else
+ cmd = 'T'; /* becomes 't' in standard frame format */
+
+ if (cf->can_id & CAN_EFF_FLAG)
+ sprintf(sl->xbuff, "%c%08X%d", cmd,
+ cf->can_id & CAN_EFF_MASK, cf->can_dlc);
+ else
+ sprintf(sl->xbuff, "%c%03X%d", cmd | 0x20,
+ cf->can_id & CAN_SFF_MASK, cf->can_dlc);
+
+ idx = strlen(sl->xbuff);
+
+ for (i = 0; i < cf->can_dlc; i++)
+ sprintf(&sl->xbuff[idx + 2*i], "%02X", cf->data[i]);
+
+ strcat(sl->xbuff, "\r"); /* add terminating character */
+
+ /* Order of next two lines is *very* important.
+ * When we are sending a little amount of data,
+ * the transfer may be completed inside the ops->write()
+ * routine, because it's running with interrupts enabled.
+ * In this case we *never* got WRITE_WAKEUP event,
+ * if we did not request it before write operation.
+ * 14 Oct 1994 Dmitry Gorodchanin.
+ */
+ set_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
+ actual = sl->tty->ops->write(sl->tty, sl->xbuff, strlen(sl->xbuff));
+ sl->xleft = strlen(sl->xbuff) - actual;
+ sl->xhead = sl->xbuff + actual;
+ sl->dev->stats.tx_bytes += cf->can_dlc;
+}
+
+/*
+ * Called by the driver when there's room for more data. If we have
+ * more packets to send, we send them here.
+ */
+static void slcan_write_wakeup(struct tty_struct *tty)
+{
+ int actual;
+ struct slcan *sl = (struct slcan *) tty->disc_data;
+
+ /* First make sure we're connected. */
+ if (!sl || sl->magic != SLCAN_MAGIC || !netif_running(sl->dev))
+ return;
+
+ if (sl->xleft <= 0) {
+ /* Now serial buffer is almost free & we can start
+ * transmission of another packet */
+ sl->dev->stats.tx_packets++;
+ clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
+ netif_wake_queue(sl->dev);
+ return;
+ }
+
+ actual = tty->ops->write(tty, sl->xhead, sl->xleft);
+ sl->xleft -= actual;
+ sl->xhead += actual;
+}
+
+/* Send a can_frame to a TTY queue. */
+static netdev_tx_t slc_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct slcan *sl = netdev_priv(dev);
+
+ if (skb->len != sizeof(struct can_frame))
+ goto out;
+
+ spin_lock(&sl->lock);
+ if (!netif_running(dev)) {
+ spin_unlock(&sl->lock);
+ printk(KERN_WARNING "%s: xmit: iface is down\n", dev->name);
+ goto out;
+ }
+ if (sl->tty == NULL) {
+ spin_unlock(&sl->lock);
+ goto out;
+ }
+
+ netif_stop_queue(sl->dev);
+ slc_encaps(sl, (struct can_frame *) skb->data); /* encaps & send */
+ spin_unlock(&sl->lock);
+
+out:
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+}
+
+
+/******************************************
+ * Routines looking at netdevice side.
+ ******************************************/
+
+/* Netdevice UP -> DOWN routine */
+static int slc_close(struct net_device *dev)
+{
+ struct slcan *sl = netdev_priv(dev);
+
+ spin_lock_bh(&sl->lock);
+ if (sl->tty) {
+ /* TTY discipline is running. */
+ clear_bit(TTY_DO_WRITE_WAKEUP, &sl->tty->flags);
+ }
+ netif_stop_queue(dev);
+ sl->rcount = 0;
+ sl->xleft = 0;
+ spin_unlock_bh(&sl->lock);
+
+ return 0;
+}
+
+/* Netdevice DOWN -> UP routine */
+static int slc_open(struct net_device *dev)
+{
+ struct slcan *sl = netdev_priv(dev);
+
+ if (sl->tty == NULL)
+ return -ENODEV;
+
+ sl->flags &= (1 << SLF_INUSE);
+ netif_start_queue(dev);
+ return 0;
+}
+
+/* Hook the destructor so we can free slcan devs at the right point in time */
+static void slc_free_netdev(struct net_device *dev)
+{
+ int i = dev->base_addr;
+ free_netdev(dev);
+ slcan_devs[i] = NULL;
+}
+
+static const struct net_device_ops slc_netdev_ops = {
+ .ndo_open = slc_open,
+ .ndo_stop = slc_close,
+ .ndo_start_xmit = slc_xmit,
+};
+
+static void slc_setup(struct net_device *dev)
+{
+ dev->netdev_ops = &slc_netdev_ops;
+ dev->destructor = slc_free_netdev;
+
+ dev->hard_header_len = 0;
+ dev->addr_len = 0;
+ dev->tx_queue_len = 10;
+
+ dev->mtu = sizeof(struct can_frame);
+ dev->type = ARPHRD_CAN;
+
+ /* New-style flags. */
+ dev->flags = IFF_NOARP;
+ dev->features = NETIF_F_NO_CSUM;
+}
+
+/******************************************
+ Routines looking at TTY side.
+ ******************************************/
+
+/*
+ * Handle the 'receiver data ready' interrupt.
+ * This function is called by the 'tty_io' module in the kernel when
+ * a block of SLCAN data has been received, which can now be decapsulated
+ * and sent on to some IP layer for further processing. This will not
+ * be re-entered while running but other ldisc functions may be called
+ * in parallel
+ */
+
+static void slcan_receive_buf(struct tty_struct *tty,
+ const unsigned char *cp, char *fp, int count)
+{
+ struct slcan *sl = (struct slcan *) tty->disc_data;
+
+ if (!sl || sl->magic != SLCAN_MAGIC || !netif_running(sl->dev))
+ return;
+
+ /* Read the characters out of the buffer */
+ while (count--) {
+ if (fp && *fp++) {
+ if (!test_and_set_bit(SLF_ERROR, &sl->flags))
+ sl->dev->stats.rx_errors++;
+ cp++;
+ continue;
+ }
+ slcan_unesc(sl, *cp++);
+ }
+}
+
+/************************************
+ * slcan_open helper routines.
+ ************************************/
+
+/* Collect hanged up channels */
+static void slc_sync(void)
+{
+ int i;
+ struct net_device *dev;
+ struct slcan *sl;
+
+ for (i = 0; i < maxdev; i++) {
+ dev = slcan_devs[i];
+ if (dev == NULL)
+ break;
+
+ sl = netdev_priv(dev);
+ if (sl->tty || sl->leased)
+ continue;
+ if (dev->flags & IFF_UP)
+ dev_close(dev);
+ }
+}
+
+/* Find a free SLCAN channel, and link in this `tty' line. */
+static struct slcan *slc_alloc(dev_t line)
+{
+ int i;
+ struct net_device *dev = NULL;
+ struct slcan *sl;
+
+ if (slcan_devs == NULL)
+ return NULL; /* Master array missing ! */
+
+ for (i = 0; i < maxdev; i++) {
+ dev = slcan_devs[i];
+ if (dev == NULL)
+ break;
+
+ }
+
+ /* Sorry, too many, all slots in use */
+ if (i >= maxdev)
+ return NULL;
+
+ if (dev) {
+ sl = netdev_priv(dev);
+ if (test_bit(SLF_INUSE, &sl->flags)) {
+ unregister_netdevice(dev);
+ dev = NULL;
+ slcan_devs[i] = NULL;
+ }
+ }
+
+ if (!dev) {
+ char name[IFNAMSIZ];
+ sprintf(name, "slcan%d", i);
+
+ dev = alloc_netdev(sizeof(*sl), name, slc_setup);
+ if (!dev)
+ return NULL;
+ dev->base_addr = i;
+ }
+
+ sl = netdev_priv(dev);
+
+ /* Initialize channel control data */
+ sl->magic = SLCAN_MAGIC;
+ sl->dev = dev;
+ spin_lock_init(&sl->lock);
+ slcan_devs[i] = dev;
+
+ return sl;
+}
+
+/*
+ * Open the high-level part of the SLCAN channel.
+ * This function is called by the TTY module when the
+ * SLCAN line discipline is called for. Because we are
+ * sure the tty line exists, we only have to link it to
+ * a free SLCAN channel...
+ *
+ * Called in process context serialized from other ldisc calls.
+ */
+
+static int slcan_open(struct tty_struct *tty)
+{
+ struct slcan *sl;
+ int err;
+
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (tty->ops->write == NULL)
+ return -EOPNOTSUPP;
+
+ /* RTnetlink lock is misused here to serialize concurrent
+ opens of slcan channels. There are better ways, but it is
+ the simplest one.
+ */
+ rtnl_lock();
+
+ /* Collect hanged up channels. */
+ slc_sync();
+
+ sl = tty->disc_data;
+
+ err = -EEXIST;
+ /* First make sure we're not already connected. */
+ if (sl && sl->magic == SLCAN_MAGIC)
+ goto err_exit;
+
+ /* OK. Find a free SLCAN channel to use. */
+ err = -ENFILE;
+ sl = slc_alloc(tty_devnum(tty));
+ if (sl == NULL)
+ goto err_exit;
+
+ sl->tty = tty;
+ tty->disc_data = sl;
+ sl->line = tty_devnum(tty);
+ sl->pid = current->pid;
+
+ if (!test_bit(SLF_INUSE, &sl->flags)) {
+ /* Perform the low-level SLCAN initialization. */
+ sl->rcount = 0;
+ sl->xleft = 0;
+
+ set_bit(SLF_INUSE, &sl->flags);
+
+ err = register_netdevice(sl->dev);
+ if (err)
+ goto err_free_chan;
+ }
+
+ /* Done. We have linked the TTY line to a channel. */
+ rtnl_unlock();
+ tty->receive_room = 65536; /* We don't flow control */
+ return sl->dev->base_addr;
+
+err_free_chan:
+ sl->tty = NULL;
+ tty->disc_data = NULL;
+ clear_bit(SLF_INUSE, &sl->flags);
+
+err_exit:
+ rtnl_unlock();
+
+ /* Count references from TTY module */
+ return err;
+}
+
+/*
+ * Close down a SLCAN channel.
+ * This means flushing out any pending queues, and then returning. This
+ * call is serialized against other ldisc functions.
+ *
+ * We also use this method for a hangup event.
+ */
+
+static void slcan_close(struct tty_struct *tty)
+{
+ struct slcan *sl = (struct slcan *) tty->disc_data;
+
+ /* First make sure we're connected. */
+ if (!sl || sl->magic != SLCAN_MAGIC || sl->tty != tty)
+ return;
+
+ tty->disc_data = NULL;
+ sl->tty = NULL;
+ if (!sl->leased)
+ sl->line = 0;
+
+ /* Flush network side */
+ unregister_netdev(sl->dev);
+ /* This will complete via sl_free_netdev */
+}
+
+static int slcan_hangup(struct tty_struct *tty)
+{
+ slcan_close(tty);
+ return 0;
+}
+
+/* Perform I/O control on an active SLCAN channel. */
+static int slcan_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct slcan *sl = (struct slcan *) tty->disc_data;
+ unsigned int tmp;
+
+ /* First make sure we're connected. */
+ if (!sl || sl->magic != SLCAN_MAGIC)
+ return -EINVAL;
+
+ switch (cmd) {
+ case SIOCGIFNAME:
+ tmp = strlen(sl->dev->name) + 1;
+ if (copy_to_user((void __user *)arg, sl->dev->name, tmp))
+ return -EFAULT;
+ return 0;
+
+ case SIOCSIFHWADDR:
+ return -EINVAL;
+
+ default:
+ return tty_mode_ioctl(tty, file, cmd, arg);
+ }
+}
+
+static struct tty_ldisc_ops slc_ldisc = {
+ .owner = THIS_MODULE,
+ .magic = TTY_LDISC_MAGIC,
+ .name = "slcan",
+ .open = slcan_open,
+ .close = slcan_close,
+ .hangup = slcan_hangup,
+ .ioctl = slcan_ioctl,
+ .receive_buf = slcan_receive_buf,
+ .write_wakeup = slcan_write_wakeup,
+};
+
+static int __init slcan_init(void)
+{
+ int status;
+
+ if (maxdev < 4)
+ maxdev = 4; /* Sanity */
+
+ printk(banner);
+ printk(KERN_INFO "slcan: %d dynamic interface channels.\n", maxdev);
+
+ slcan_devs = kzalloc(sizeof(struct net_device *)*maxdev, GFP_KERNEL);
+ if (!slcan_devs) {
+ printk(KERN_ERR "slcan: can't allocate slcan device array!\n");
+ return -ENOMEM;
+ }
+
+ /* Fill in our line protocol discipline, and register it */
+ status = tty_register_ldisc(N_SLCAN, &slc_ldisc);
+ if (status) {
+ printk(KERN_ERR "slcan: can't register line discipline\n");
+ kfree(slcan_devs);
+ }
+ return status;
+}
+
+static void __exit slcan_exit(void)
+{
+ int i;
+ struct net_device *dev;
+ struct slcan *sl;
+ unsigned long timeout = jiffies + HZ;
+ int busy = 0;
+
+ if (slcan_devs == NULL)
+ return;
+
+ /* First of all: check for active disciplines and hangup them.
+ */
+ do {
+ if (busy)
+ msleep_interruptible(100);
+
+ busy = 0;
+ for (i = 0; i < maxdev; i++) {
+ dev = slcan_devs[i];
+ if (!dev)
+ continue;
+ sl = netdev_priv(dev);
+ spin_lock_bh(&sl->lock);
+ if (sl->tty) {
+ busy++;
+ tty_hangup(sl->tty);
+ }
+ spin_unlock_bh(&sl->lock);
+ }
+ } while (busy && time_before(jiffies, timeout));
+
+ /* FIXME: hangup is async so we should wait when doing this second
+ phase */
+
+ for (i = 0; i < maxdev; i++) {
+ dev = slcan_devs[i];
+ if (!dev)
+ continue;
+ slcan_devs[i] = NULL;
+
+ sl = netdev_priv(dev);
+ if (sl->tty) {
+ printk(KERN_ERR "%s: tty discipline still running\n",
+ dev->name);
+ /* Intentionally leak the control block. */
+ dev->destructor = NULL;
+ }
+
+ unregister_netdev(dev);
+ }
+
+ kfree(slcan_devs);
+ slcan_devs = NULL;
+
+ i = tty_unregister_ldisc(N_SLCAN);
+ if (i)
+ printk(KERN_ERR "slcan: can't unregister ldisc (err %d)\n", i);
+}
+
+module_init(slcan_init);
+module_exit(slcan_exit);
/* Information that need to be kept for each board. */
struct net_local {
- struct net_device_stats stats;
struct mii_if_info mii_if;
/* Tx control lock. This protects the transmit buffer ring
/* remember we got an error */
- np->stats.tx_errors++;
+ dev->stats.tx_errors++;
/* reset the TX DMA in case it has hung on something */
* allocate a new buffer to put a packet in.
*/
e100_rx(dev);
- np->stats.rx_packets++;
+ dev->stats.rx_packets++;
/* restart/continue on the channel, for safety */
*R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, restart);
/* clear dma channel 1 eop/descr irq bits */
/* Report any packets that have been sent */
while (virt_to_phys(myFirstTxDesc) != *R_DMA_CH0_FIRST &&
(netif_queue_stopped(dev) || myFirstTxDesc != myNextTxDesc)) {
- np->stats.tx_bytes += myFirstTxDesc->skb->len;
- np->stats.tx_packets++;
+ dev->stats.tx_bytes += myFirstTxDesc->skb->len;
+ dev->stats.tx_packets++;
/* dma is ready with the transmission of the data in tx_skb, so now
we can release the skb memory */
e100nw_interrupt(int irq, void *dev_id)
{
struct net_device *dev = (struct net_device *)dev_id;
- struct net_local *np = netdev_priv(dev);
unsigned long irqbits = *R_IRQ_MASK0_RD;
/* check for underrun irq */
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr);
*R_NETWORK_TR_CTRL = network_tr_ctrl_shadow;
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop);
- np->stats.tx_errors++;
+ dev->stats.tx_errors++;
D(printk("ethernet receiver underrun!\n"));
}
/* check for overrun irq */
if (irqbits & IO_STATE(R_IRQ_MASK0_RD, overrun, active)) {
- update_rx_stats(&np->stats); /* this will ack the irq */
+ update_rx_stats(&dev->stats); /* this will ack the irq */
D(printk("ethernet receiver overrun!\n"));
}
/* check for excessive collision irq */
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, clr);
*R_NETWORK_TR_CTRL = network_tr_ctrl_shadow;
SETS(network_tr_ctrl_shadow, R_NETWORK_TR_CTRL, clr_error, nop);
- np->stats.tx_errors++;
+ dev->stats.tx_errors++;
D(printk("ethernet excessive collisions!\n"));
}
return IRQ_HANDLED;
spin_unlock(&np->led_lock);
length = myNextRxDesc->descr.hw_len - 4;
- np->stats.rx_bytes += length;
+ dev->stats.rx_bytes += length;
#ifdef ETHDEBUG
printk("Got a packet of length %d:\n", length);
/* Small packet, copy data */
skb = dev_alloc_skb(length - ETHER_HEAD_LEN);
if (!skb) {
- np->stats.rx_errors++;
+ dev->stats.rx_errors++;
printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
goto update_nextrxdesc;
}
int align;
struct sk_buff *new_skb = dev_alloc_skb(MAX_MEDIA_DATA_SIZE + 2 * L1_CACHE_BYTES);
if (!new_skb) {
- np->stats.rx_errors++;
+ dev->stats.rx_errors++;
printk(KERN_NOTICE "%s: Memory squeeze, dropping packet.\n", dev->name);
goto update_nextrxdesc;
}
static int
e100_close(struct net_device *dev)
{
- struct net_local *np = netdev_priv(dev);
-
printk(KERN_INFO "Closing %s.\n", dev->name);
netif_stop_queue(dev);
/* Update the statistics here. */
- update_rx_stats(&np->stats);
- update_tx_stats(&np->stats);
+ update_rx_stats(&dev->stats);
+ update_tx_stats(&dev->stats);
/* Stop speed/duplex timers */
del_timer(&speed_timer);
spin_lock_irqsave(&lp->lock, flags);
- update_rx_stats(&lp->stats);
- update_tx_stats(&lp->stats);
+ update_rx_stats(&dev->stats);
+ update_tx_stats(&dev->stats);
spin_unlock_irqrestore(&lp->lock, flags);
- return &lp->stats;
+ return &dev->stats;
}
/*
if (index < NEXACT_MAC)
ret++;
else if (hash)
- *hash |= (1 << hash_mac_addr(addr[i]));
+ *hash |= (1ULL << hash_mac_addr(addr[i]));
}
return ret;
}
}
/*
- * Collect up to maxaddrs worth of a netdevice's unicast addresses into an
- * array of addrss pointers and return the number collected.
+ * Collect up to maxaddrs worth of a netdevice's unicast addresses, starting
+ * at a specified offset within the list, into an array of addrss pointers and
+ * return the number collected.
*/
-static inline int collect_netdev_uc_list_addrs(const struct net_device *dev,
- const u8 **addr,
- unsigned int maxaddrs)
+static inline unsigned int collect_netdev_uc_list_addrs(const struct net_device *dev,
+ const u8 **addr,
+ unsigned int offset,
+ unsigned int maxaddrs)
{
+ unsigned int index = 0;
unsigned int naddr = 0;
const struct netdev_hw_addr *ha;
- for_each_dev_addr(dev, ha) {
- addr[naddr++] = ha->addr;
- if (naddr >= maxaddrs)
- break;
- }
+ for_each_dev_addr(dev, ha)
+ if (index++ >= offset) {
+ addr[naddr++] = ha->addr;
+ if (naddr >= maxaddrs)
+ break;
+ }
return naddr;
}
/*
- * Collect up to maxaddrs worth of a netdevice's multicast addresses into an
- * array of addrss pointers and return the number collected.
+ * Collect up to maxaddrs worth of a netdevice's multicast addresses, starting
+ * at a specified offset within the list, into an array of addrss pointers and
+ * return the number collected.
*/
-static inline int collect_netdev_mc_list_addrs(const struct net_device *dev,
- const u8 **addr,
- unsigned int maxaddrs)
+static inline unsigned int collect_netdev_mc_list_addrs(const struct net_device *dev,
+ const u8 **addr,
+ unsigned int offset,
+ unsigned int maxaddrs)
{
+ unsigned int index = 0;
unsigned int naddr = 0;
const struct netdev_hw_addr *ha;
- netdev_for_each_mc_addr(ha, dev) {
- addr[naddr++] = ha->addr;
- if (naddr >= maxaddrs)
- break;
- }
+ netdev_for_each_mc_addr(ha, dev)
+ if (index++ >= offset) {
+ addr[naddr++] = ha->addr;
+ if (naddr >= maxaddrs)
+ break;
+ }
return naddr;
}
u64 mhash = 0;
u64 uhash = 0;
bool free = true;
- u16 filt_idx[7];
+ unsigned int offset, naddr;
const u8 *addr[7];
- int ret, naddr = 0;
+ int ret;
const struct port_info *pi = netdev_priv(dev);
/* first do the secondary unicast addresses */
- naddr = collect_netdev_uc_list_addrs(dev, addr, ARRAY_SIZE(addr));
- if (naddr > 0) {
+ for (offset = 0; ; offset += naddr) {
+ naddr = collect_netdev_uc_list_addrs(dev, addr, offset,
+ ARRAY_SIZE(addr));
+ if (naddr == 0)
+ break;
+
ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free,
- naddr, addr, filt_idx, &uhash, sleep);
+ naddr, addr, NULL, &uhash, sleep);
if (ret < 0)
return ret;
}
/* next set up the multicast addresses */
- naddr = collect_netdev_mc_list_addrs(dev, addr, ARRAY_SIZE(addr));
- if (naddr > 0) {
+ for (offset = 0; ; offset += naddr) {
+ naddr = collect_netdev_mc_list_addrs(dev, addr, offset,
+ ARRAY_SIZE(addr));
+ if (naddr == 0)
+ break;
+
ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free,
- naddr, addr, filt_idx, &mhash, sleep);
+ naddr, addr, NULL, &mhash, sleep);
if (ret < 0)
return ret;
+ free = false;
}
return t4vf_set_addr_hash(pi->adapter, pi->viid, uhash != 0,
unsigned int naddr, const u8 **addr, u16 *idx,
u64 *hash, bool sleep_ok)
{
- int i, ret;
+ int offset, ret = 0;
+ unsigned nfilters = 0;
+ unsigned int rem = naddr;
struct fw_vi_mac_cmd cmd, rpl;
- struct fw_vi_mac_exact *p;
- size_t len16;
- if (naddr > ARRAY_SIZE(cmd.u.exact))
+ if (naddr > FW_CLS_TCAM_NUM_ENTRIES)
return -EINVAL;
- len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
- u.exact[naddr]), 16);
- memset(&cmd, 0, sizeof(cmd));
- cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) |
- FW_CMD_REQUEST |
- FW_CMD_WRITE |
- (free ? FW_CMD_EXEC : 0) |
- FW_VI_MAC_CMD_VIID(viid));
- cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) |
- FW_CMD_LEN16(len16));
+ for (offset = 0; offset < naddr; /**/) {
+ unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact)
+ ? rem
+ : ARRAY_SIZE(cmd.u.exact));
+ size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
+ u.exact[fw_naddr]), 16);
+ struct fw_vi_mac_exact *p;
+ int i;
- for (i = 0, p = cmd.u.exact; i < naddr; i++, p++) {
- p->valid_to_idx =
- cpu_to_be16(FW_VI_MAC_CMD_VALID |
- FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC));
- memcpy(p->macaddr, addr[i], sizeof(p->macaddr));
- }
+ memset(&cmd, 0, sizeof(cmd));
+ cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) |
+ FW_CMD_REQUEST |
+ FW_CMD_WRITE |
+ (free ? FW_CMD_EXEC : 0) |
+ FW_VI_MAC_CMD_VIID(viid));
+ cmd.freemacs_to_len16 =
+ cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) |
+ FW_CMD_LEN16(len16));
+
+ for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
+ p->valid_to_idx = cpu_to_be16(
+ FW_VI_MAC_CMD_VALID |
+ FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC));
+ memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
+ }
+
+
+ ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl,
+ sleep_ok);
+ if (ret && ret != -ENOMEM)
+ break;
- ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl, sleep_ok);
- if (ret)
- return ret;
-
- for (i = 0, p = rpl.u.exact; i < naddr; i++, p++) {
- u16 index = FW_VI_MAC_CMD_IDX_GET(be16_to_cpu(p->valid_to_idx));
-
- if (idx)
- idx[i] = (index >= FW_CLS_TCAM_NUM_ENTRIES
- ? 0xffff
- : index);
- if (index < FW_CLS_TCAM_NUM_ENTRIES)
- ret++;
- else if (hash)
- *hash |= (1 << hash_mac_addr(addr[i]));
+ for (i = 0, p = rpl.u.exact; i < fw_naddr; i++, p++) {
+ u16 index = FW_VI_MAC_CMD_IDX_GET(
+ be16_to_cpu(p->valid_to_idx));
+
+ if (idx)
+ idx[offset+i] =
+ (index >= FW_CLS_TCAM_NUM_ENTRIES
+ ? 0xffff
+ : index);
+ if (index < FW_CLS_TCAM_NUM_ENTRIES)
+ nfilters++;
+ else if (hash)
+ *hash |= (1ULL << hash_mac_addr(addr[offset+i]));
+ }
+
+ free = false;
+ offset += fw_naddr;
+ rem -= fw_naddr;
}
+
+ /*
+ * If there were no errors or we merely ran out of room in our MAC
+ * address arena, return the number of filters actually written.
+ */
+ if (ret == 0 || ret == -ENOMEM)
+ ret = nfilters;
return ret;
}
char e1000_driver_name[] = "e1000";
static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
-#define DRV_VERSION "7.3.21-k6-NAPI"
+#define DRV_VERSION "7.3.21-k8-NAPI"
const char e1000_driver_version[] = DRV_VERSION;
static const char e1000_copyright[] = "Copyright (c) 1999-2006 Intel Corporation.";
struct net_device *netdev = adapter->netdev;
u32 rctl, tctl;
- /* signal that we're down so the interrupt handler does not
- * reschedule our watchdog timer */
- set_bit(__E1000_DOWN, &adapter->flags);
/* disable receives in the hardware */
rctl = er32(RCTL);
e1000_irq_disable(adapter);
+ /*
+ * Setting DOWN must be after irq_disable to prevent
+ * a screaming interrupt. Setting DOWN also prevents
+ * timers and tasks from rescheduling.
+ */
+ set_bit(__E1000_DOWN, &adapter->flags);
+
del_timer_sync(&adapter->tx_fifo_stall_timer);
del_timer_sync(&adapter->watchdog_timer);
del_timer_sync(&adapter->phy_info_timer);
}
+static int ehea_set_flags(struct net_device *dev, u32 data)
+{
+ return ethtool_op_set_flags(dev, data, ETH_FLAG_LRO
+ | ETH_FLAG_TXVLAN
+ | ETH_FLAG_RXVLAN);
+}
+
const struct ethtool_ops ehea_ethtool_ops = {
.get_settings = ehea_get_settings,
.get_drvinfo = ehea_get_drvinfo,
.get_ethtool_stats = ehea_get_ethtool_stats,
.get_rx_csum = ehea_get_rx_csum,
.set_settings = ehea_set_settings,
+ .get_flags = ethtool_op_get_flags,
+ .set_flags = ehea_set_flags,
.nway_reset = ehea_nway_reset, /* Restart autonegotiation */
};
skb_arr_rq1[index] = netdev_alloc_skb(dev,
EHEA_L_PKT_SIZE);
if (!skb_arr_rq1[index]) {
+ ehea_info("Unable to allocate enough skb in the array\n");
pr->rq1_skba.os_skbs = fill_wqes - i;
break;
}
struct net_device *dev = pr->port->netdev;
int i;
- for (i = 0; i < pr->rq1_skba.len; i++) {
+ if (nr_rq1a > pr->rq1_skba.len) {
+ ehea_error("NR_RQ1A bigger than skb array len\n");
+ return;
+ }
+
+ for (i = 0; i < nr_rq1a; i++) {
skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
- if (!skb_arr_rq1[i])
+ if (!skb_arr_rq1[i]) {
+ ehea_info("No enough memory to allocate skb array\n");
break;
+ }
}
/* Ring doorbell */
- ehea_update_rq1a(pr->qp, nr_rq1a);
+ ehea_update_rq1a(pr->qp, i);
}
static int ehea_refill_rq_def(struct ehea_port_res *pr,
int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
pr->port->vgrp);
- if (use_lro) {
+ if (skb->dev->features & NETIF_F_LRO) {
if (vlan_extracted)
lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
pr->port->vgrp,
skb = netdev_alloc_skb(dev,
EHEA_L_PKT_SIZE);
- if (!skb)
+ if (!skb) {
+ ehea_info("Not enough memory to allocate skb\n");
break;
+ }
}
skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
cqe->num_bytes_transfered - 4);
}
cqe = ehea_poll_rq1(qp, &wqe_index);
}
- if (use_lro)
+ if (dev->features & NETIF_F_LRO)
lro_flush_all(&pr->lro_mgr);
pr->rx_packets += processed;
| NETIF_F_LLTX;
dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
+ if (use_lro)
+ dev->features |= NETIF_F_LRO;
+
INIT_WORK(&port->reset_task, ehea_reset_port);
ret = register_netdev(dev);
rcu_read_unlock();
dev_kfree_skb(skb);
stats->tx_dropped++;
+ if (skb_queue_len(&dp->tq) != 0)
+ goto resched;
break;
}
rcu_read_unlock();
/* Baud Rate Error Correction x 10000 */
u32 rate_err_array[] = {
- 0000, 0625, 1250, 1875,
+ 0, 625, 1250, 1875,
2500, 3125, 3750, 4375,
5000, 5625, 6250, 6875,
7500, 8125, 8750, 9375,
static s32 ixgbe_setup_sfp_modules_82599(struct ixgbe_hw *hw)
{
s32 ret_val = 0;
+ u32 reg_anlp1 = 0;
+ u32 i = 0;
u16 list_offset, data_offset, data_value;
if (hw->phy.sfp_type != ixgbe_sfp_type_unknown) {
IXGBE_WRITE_FLUSH(hw);
hw->eeprom.ops.read(hw, ++data_offset, &data_value);
}
- /* Now restart DSP by setting Restart_AN */
- IXGBE_WRITE_REG(hw, IXGBE_AUTOC,
- (IXGBE_READ_REG(hw, IXGBE_AUTOC) | IXGBE_AUTOC_AN_RESTART));
/* Release the semaphore */
ixgbe_release_swfw_sync(hw, IXGBE_GSSR_MAC_CSR_SM);
/* Delay obtaining semaphore again to allow FW access */
msleep(hw->eeprom.semaphore_delay);
+
+ /* Now restart DSP by setting Restart_AN and clearing LMS */
+ IXGBE_WRITE_REG(hw, IXGBE_AUTOC, ((IXGBE_READ_REG(hw,
+ IXGBE_AUTOC) & ~IXGBE_AUTOC_LMS_MASK) |
+ IXGBE_AUTOC_AN_RESTART));
+
+ /* Wait for AN to leave state 0 */
+ for (i = 0; i < 10; i++) {
+ msleep(4);
+ reg_anlp1 = IXGBE_READ_REG(hw, IXGBE_ANLP1);
+ if (reg_anlp1 & IXGBE_ANLP1_AN_STATE_MASK)
+ break;
+ }
+ if (!(reg_anlp1 & IXGBE_ANLP1_AN_STATE_MASK)) {
+ hw_dbg(hw, "sfp module setup not complete\n");
+ ret_val = IXGBE_ERR_SFP_SETUP_NOT_COMPLETE;
+ goto setup_sfp_out;
+ }
+
+ /* Restart DSP by setting Restart_AN and return to SFI mode */
+ IXGBE_WRITE_REG(hw, IXGBE_AUTOC, (IXGBE_READ_REG(hw,
+ IXGBE_AUTOC) | IXGBE_AUTOC_LMS_10G_SERIAL |
+ IXGBE_AUTOC_AN_RESTART));
}
setup_sfp_out:
/* enable the optics for both mult-speed fiber and 82599 SFP+ fiber */
if (hw->mac.ops.enable_tx_laser &&
((hw->phy.multispeed_fiber) ||
- ((hw->phy.type == ixgbe_media_type_fiber) &&
+ ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
(hw->mac.type == ixgbe_mac_82599EB))))
hw->mac.ops.enable_tx_laser(hw);
/* power down the optics for multispeed fiber and 82599 SFP+ fiber */
if (hw->mac.ops.disable_tx_laser &&
((hw->phy.multispeed_fiber) ||
- ((hw->phy.type == ixgbe_media_type_fiber) &&
+ ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
(hw->mac.type == ixgbe_mac_82599EB))))
hw->mac.ops.disable_tx_laser(hw);
adapter->rx_ring[i] = NULL;
}
+ adapter->num_tx_queues = 0;
+ adapter->num_rx_queues = 0;
+
ixgbe_free_q_vectors(adapter);
ixgbe_reset_interrupt_capability(adapter);
}
/* power down the optics for multispeed fiber and 82599 SFP+ fiber */
if (hw->mac.ops.disable_tx_laser &&
((hw->phy.multispeed_fiber) ||
- ((hw->phy.type == ixgbe_media_type_fiber) &&
+ ((hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber) &&
(hw->mac.type == ixgbe_mac_82599EB))))
hw->mac.ops.disable_tx_laser(hw);
#define IXGBE_ANLP1_PAUSE 0x0C00
#define IXGBE_ANLP1_SYM_PAUSE 0x0400
#define IXGBE_ANLP1_ASM_PAUSE 0x0800
+#define IXGBE_ANLP1_AN_STATE_MASK 0x000f0000
+
/* SW Semaphore Register bitmasks */
#define IXGBE_SWSM_SMBI 0x00000001 /* Driver Semaphore bit */
#define IXGBE_ERR_NO_SPACE -25
#define IXGBE_ERR_OVERTEMP -26
#define IXGBE_ERR_RAR_INDEX -27
+#define IXGBE_ERR_SFP_SETUP_NOT_COMPLETE -30
#define IXGBE_ERR_PBA_SECTION -31
#define IXGBE_ERR_INVALID_ARGUMENT -32
#define IXGBE_NOT_IMPLEMENTED 0x7FFFFFFF
}
if (new_mtu > 1900) {
- netdev->features &= ~(NETIF_F_HW_CSUM |
- NETIF_F_TSO |
- NETIF_F_TSO6);
+ netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
+ NETIF_F_TSO | NETIF_F_TSO6);
} else {
if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
- netdev->features |= NETIF_F_HW_CSUM;
+ netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
if (test_bit(JME_FLAG_TSO, &jme->flags))
netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
}
if (on) {
set_bit(JME_FLAG_TXCSUM, &jme->flags);
if (netdev->mtu <= 1900)
- netdev->features |= NETIF_F_HW_CSUM;
+ netdev->features |=
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
} else {
clear_bit(JME_FLAG_TXCSUM, &jme->flags);
- netdev->features &= ~NETIF_F_HW_CSUM;
+ netdev->features &=
+ ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
}
return 0;
netdev->netdev_ops = &jme_netdev_ops;
netdev->ethtool_ops = &jme_ethtool_ops;
netdev->watchdog_timeo = TX_TIMEOUT;
- netdev->features = NETIF_F_HW_CSUM |
+ netdev->features = NETIF_F_IP_CSUM |
+ NETIF_F_IPV6_CSUM |
NETIF_F_SG |
NETIF_F_TSO |
NETIF_F_TSO6 |
return 0;
}
-/**
- * pch_gbe_get_tx_csum - Report whether transmit checksums are turned on or off
- * @netdev: Network interface device structure
- * Returns
- * true(1): Checksum On
- * false(0): Checksum Off
- */
-static u32 pch_gbe_get_tx_csum(struct net_device *netdev)
-{
- return (netdev->features & NETIF_F_HW_CSUM) != 0;
-}
-
/**
* pch_gbe_set_tx_csum - Turn transmit checksums on or off
* @netdev: Network interface device structure
struct pch_gbe_adapter *adapter = netdev_priv(netdev);
adapter->tx_csum = data;
- if (data)
- netdev->features |= NETIF_F_HW_CSUM;
- else
- netdev->features &= ~NETIF_F_HW_CSUM;
- return 0;
+ return ethtool_op_set_tx_ipv6_csum(netdev, data);
}
/**
.set_pauseparam = pch_gbe_set_pauseparam,
.get_rx_csum = pch_gbe_get_rx_csum,
.set_rx_csum = pch_gbe_set_rx_csum,
- .get_tx_csum = pch_gbe_get_tx_csum,
.set_tx_csum = pch_gbe_set_tx_csum,
.get_strings = pch_gbe_get_strings,
.get_ethtool_stats = pch_gbe_get_ethtool_stats,
/*
* Copyright (C) 1999 - 2010 Intel Corporation.
- * Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
+ * Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD.
*
* This code was derived from the Intel e1000e Linux driver.
*
netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD;
netif_napi_add(netdev, &adapter->napi,
pch_gbe_napi_poll, PCH_GBE_RX_WEIGHT);
- netdev->features = NETIF_F_HW_CSUM | NETIF_F_GRO;
+ netdev->features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_GRO;
pch_gbe_set_ethtool_ops(netdev);
pch_gbe_mac_reset_hw(&adapter->hw);
pch_gbe_check_options(adapter);
if (adapter->tx_csum)
- netdev->features |= NETIF_F_HW_CSUM;
+ netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
else
- netdev->features &= ~NETIF_F_HW_CSUM;
+ netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
/* initialize the wol settings based on the eeprom settings */
adapter->wake_up_evt = PCH_GBE_WL_INIT_SETTING;
module_init(pch_gbe_init_module);
module_exit(pch_gbe_exit_module);
-MODULE_DESCRIPTION("OKI semiconductor PCH Gigabit ethernet Driver");
-MODULE_AUTHOR("OKI semiconductor, <masa-korg@dsn.okisemi.com>");
+MODULE_DESCRIPTION("EG20T PCH Gigabit ethernet Driver");
+MODULE_AUTHOR("OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, pch_gbe_pcidev_id);
.err = "using default of "
__MODULE_STRING(PCH_GBE_DEFAULT_TXD),
.def = PCH_GBE_DEFAULT_TXD,
- .arg = { .r = { .min = PCH_GBE_MIN_TXD } },
- .arg = { .r = { .max = PCH_GBE_MAX_TXD } }
+ .arg = { .r = { .min = PCH_GBE_MIN_TXD,
+ .max = PCH_GBE_MAX_TXD } }
};
struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring;
tx_ring->count = TxDescriptors;
.err = "using default of "
__MODULE_STRING(PCH_GBE_DEFAULT_RXD),
.def = PCH_GBE_DEFAULT_RXD,
- .arg = { .r = { .min = PCH_GBE_MIN_RXD } },
- .arg = { .r = { .max = PCH_GBE_MAX_RXD } }
+ .arg = { .r = { .min = PCH_GBE_MIN_RXD,
+ .max = PCH_GBE_MAX_RXD } }
};
struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring;
rx_ring->count = RxDescriptors;
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <linux/marvell_phy.h>
+#include <linux/of.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
+#define MII_MARVELL_PHY_PAGE 22
+
#define MII_M1011_IEVENT 0x13
#define MII_M1011_IEVENT_CLEAR 0x0000
#define MII_88E1121_PHY_LED_CTRL 16
#define MII_88E1121_PHY_LED_PAGE 3
#define MII_88E1121_PHY_LED_DEF 0x0030
-#define MII_88E1121_PHY_PAGE 22
#define MII_M1011_PHY_STATUS 0x11
#define MII_M1011_PHY_STATUS_1000 0x8000
return 0;
}
+#ifdef CONFIG_OF_MDIO
+/*
+ * Set and/or override some configuration registers based on the
+ * marvell,reg-init property stored in the of_node for the phydev.
+ *
+ * marvell,reg-init = <reg-page reg mask value>,...;
+ *
+ * There may be one or more sets of <reg-page reg mask value>:
+ *
+ * reg-page: which register bank to use.
+ * reg: the register.
+ * mask: if non-zero, ANDed with existing register value.
+ * value: ORed with the masked value and written to the regiser.
+ *
+ */
+static int marvell_of_reg_init(struct phy_device *phydev)
+{
+ const __be32 *paddr;
+ int len, i, saved_page, current_page, page_changed, ret;
+
+ if (!phydev->dev.of_node)
+ return 0;
+
+ paddr = of_get_property(phydev->dev.of_node, "marvell,reg-init", &len);
+ if (!paddr || len < (4 * sizeof(*paddr)))
+ return 0;
+
+ saved_page = phy_read(phydev, MII_MARVELL_PHY_PAGE);
+ if (saved_page < 0)
+ return saved_page;
+ page_changed = 0;
+ current_page = saved_page;
+
+ ret = 0;
+ len /= sizeof(*paddr);
+ for (i = 0; i < len - 3; i += 4) {
+ u16 reg_page = be32_to_cpup(paddr + i);
+ u16 reg = be32_to_cpup(paddr + i + 1);
+ u16 mask = be32_to_cpup(paddr + i + 2);
+ u16 val_bits = be32_to_cpup(paddr + i + 3);
+ int val;
+
+ if (reg_page != current_page) {
+ current_page = reg_page;
+ page_changed = 1;
+ ret = phy_write(phydev, MII_MARVELL_PHY_PAGE, reg_page);
+ if (ret < 0)
+ goto err;
+ }
+
+ val = 0;
+ if (mask) {
+ val = phy_read(phydev, reg);
+ if (val < 0) {
+ ret = val;
+ goto err;
+ }
+ val &= mask;
+ }
+ val |= val_bits;
+
+ ret = phy_write(phydev, reg, val);
+ if (ret < 0)
+ goto err;
+
+ }
+err:
+ if (page_changed) {
+ i = phy_write(phydev, MII_MARVELL_PHY_PAGE, saved_page);
+ if (ret == 0)
+ ret = i;
+ }
+ return ret;
+}
+#else
+static int marvell_of_reg_init(struct phy_device *phydev)
+{
+ return 0;
+}
+#endif /* CONFIG_OF_MDIO */
+
static int m88e1121_config_aneg(struct phy_device *phydev)
{
int err, oldpage, mscr;
- oldpage = phy_read(phydev, MII_88E1121_PHY_PAGE);
+ oldpage = phy_read(phydev, MII_MARVELL_PHY_PAGE);
- err = phy_write(phydev, MII_88E1121_PHY_PAGE,
+ err = phy_write(phydev, MII_MARVELL_PHY_PAGE,
MII_88E1121_PHY_MSCR_PAGE);
if (err < 0)
return err;
return err;
}
- phy_write(phydev, MII_88E1121_PHY_PAGE, oldpage);
+ phy_write(phydev, MII_MARVELL_PHY_PAGE, oldpage);
err = phy_write(phydev, MII_BMCR, BMCR_RESET);
if (err < 0)
if (err < 0)
return err;
- oldpage = phy_read(phydev, MII_88E1121_PHY_PAGE);
+ oldpage = phy_read(phydev, MII_MARVELL_PHY_PAGE);
- phy_write(phydev, MII_88E1121_PHY_PAGE, MII_88E1121_PHY_LED_PAGE);
+ phy_write(phydev, MII_MARVELL_PHY_PAGE, MII_88E1121_PHY_LED_PAGE);
phy_write(phydev, MII_88E1121_PHY_LED_CTRL, MII_88E1121_PHY_LED_DEF);
- phy_write(phydev, MII_88E1121_PHY_PAGE, oldpage);
+ phy_write(phydev, MII_MARVELL_PHY_PAGE, oldpage);
err = genphy_config_aneg(phydev);
{
int err, oldpage, mscr;
- oldpage = phy_read(phydev, MII_88E1121_PHY_PAGE);
+ oldpage = phy_read(phydev, MII_MARVELL_PHY_PAGE);
- err = phy_write(phydev, MII_88E1121_PHY_PAGE,
+ err = phy_write(phydev, MII_MARVELL_PHY_PAGE,
MII_88E1121_PHY_MSCR_PAGE);
if (err < 0)
return err;
if (err < 0)
return err;
- err = phy_write(phydev, MII_88E1121_PHY_PAGE, oldpage);
+ err = phy_write(phydev, MII_MARVELL_PHY_PAGE, oldpage);
if (err < 0)
return err;
return err;
}
+ err = marvell_of_reg_init(phydev);
+ if (err < 0)
+ return err;
err = phy_write(phydev, MII_BMCR, BMCR_RESET);
if (err < 0)
int err;
/* Change address */
- err = phy_write(phydev, 0x16, 0x0002);
+ err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0002);
if (err < 0)
return err;
return err;
/* Change address */
- err = phy_write(phydev, 0x16, 0x0003);
+ err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0003);
if (err < 0)
return err;
if (err < 0)
return err;
+ err = marvell_of_reg_init(phydev);
+ if (err < 0)
+ return err;
+
/* Reset address */
- err = phy_write(phydev, 0x16, 0x0);
+ err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0);
+ if (err < 0)
+ return err;
+
+ err = phy_write(phydev, MII_BMCR, BMCR_RESET);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int m88e1149_config_init(struct phy_device *phydev)
+{
+ int err;
+
+ /* Change address */
+ err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0002);
+ if (err < 0)
+ return err;
+
+ /* Enable 1000 Mbit */
+ err = phy_write(phydev, 0x15, 0x1048);
+ if (err < 0)
+ return err;
+
+ err = marvell_of_reg_init(phydev);
+ if (err < 0)
+ return err;
+
+ /* Reset address */
+ err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0x0);
if (err < 0)
return err;
}
}
+ err = marvell_of_reg_init(phydev);
+ if (err < 0)
+ return err;
+
return 0;
}
.config_intr = &marvell_config_intr,
.driver = { .owner = THIS_MODULE },
},
+ {
+ .phy_id = MARVELL_PHY_ID_88E1149R,
+ .phy_id_mask = MARVELL_PHY_ID_MASK,
+ .name = "Marvell 88E1149R",
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &m88e1149_config_init,
+ .config_aneg = &m88e1118_config_aneg,
+ .read_status = &genphy_read_status,
+ .ack_interrupt = &marvell_ack_interrupt,
+ .config_intr = &marvell_config_intr,
+ .driver = { .owner = THIS_MODULE },
+ },
{
.phy_id = MARVELL_PHY_ID_88E1240,
.phy_id_mask = MARVELL_PHY_ID_MASK,
{ 0x01410e10, 0xfffffff0 },
{ 0x01410cb0, 0xfffffff0 },
{ 0x01410cd0, 0xfffffff0 },
+ { 0x01410e50, 0xfffffff0 },
{ 0x01410e30, 0xfffffff0 },
{ 0x01410e90, 0xfffffff0 },
{ }
*/
dev_net_set(dev, net);
- ret = -EEXIST;
mutex_lock(&pn->all_ppp_mutex);
if (unit < 0) {
unit = unit_get(&pn->units_idr, ppp);
if (unit < 0) {
- *retp = unit;
+ ret = unit;
goto out2;
}
} else {
+ ret = -EEXIST;
if (unit_find(&pn->units_idr, unit))
goto out2; /* unit already exists */
/*
ppp->closing = 1;
ppp_unlock(ppp);
unregister_netdev(ppp->dev);
+ unit_put(&pn->units_idr, ppp->file.index);
} else
ppp_unlock(ppp);
- unit_put(&pn->units_idr, ppp->file.index);
ppp->file.dead = 1;
ppp->owner = NULL;
wake_up_interruptible(&ppp->file.rwait);
* by holding all_ppp_mutex
*/
-/* associate pointer with specified number */
-static int unit_set(struct idr *p, void *ptr, int n)
+static int __unit_alloc(struct idr *p, void *ptr, int n)
{
int unit, err;
}
err = idr_get_new_above(p, ptr, n, &unit);
- if (err == -EAGAIN)
- goto again;
+ if (err < 0) {
+ if (err == -EAGAIN)
+ goto again;
+ return err;
+ }
+
+ return unit;
+}
+
+/* associate pointer with specified number */
+static int unit_set(struct idr *p, void *ptr, int n)
+{
+ int unit;
- if (unit != n) {
+ unit = __unit_alloc(p, ptr, n);
+ if (unit < 0)
+ return unit;
+ else if (unit != n) {
idr_remove(p, unit);
return -EINVAL;
}
/* get new free unit number and associate pointer with it */
static int unit_get(struct idr *p, void *ptr)
{
- int unit, err;
-
-again:
- if (!idr_pre_get(p, GFP_KERNEL)) {
- printk(KERN_ERR "PPP: No free memory for idr\n");
- return -ENOMEM;
- }
-
- err = idr_get_new_above(p, ptr, 0, &unit);
- if (err == -EAGAIN)
- goto again;
-
- return unit;
+ return __unit_alloc(p, ptr, 0);
}
/* put unit number back to a pool */
/* NETIF_MSG_PKTDATA | */
NETIF_MSG_HW | NETIF_MSG_WOL | 0;
-static int debug = 0x00007fff; /* defaults above */
-module_param(debug, int, 0);
+static int debug = -1; /* defaults above */
+module_param(debug, int, 0664);
MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
#define MSIX_IRQ 0
#define MSI_IRQ 1
#define LEG_IRQ 2
static int qlge_irq_type = MSIX_IRQ;
-module_param(qlge_irq_type, int, MSIX_IRQ);
+module_param(qlge_irq_type, int, 0664);
MODULE_PARM_DESC(qlge_irq_type, "0 = MSI-X, 1 = MSI, 2 = Legacy.");
static int qlge_mpi_coredump;
dev->irq = pdev->irq;
/* faked with skb_copy_and_csum_dev */
- dev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
+ dev->features = NETIF_F_SG | NETIF_F_HIGHDMA |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
dev->netdev_ops = &sc92031_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
static void efx_remove_channels(struct efx_nic *efx);
static void efx_remove_port(struct efx_nic *efx);
+static void efx_init_napi(struct efx_nic *efx);
static void efx_fini_napi(struct efx_nic *efx);
+static void efx_fini_napi_channel(struct efx_channel *channel);
static void efx_fini_struct(struct efx_nic *efx);
static void efx_start_all(struct efx_nic *efx);
static void efx_stop_all(struct efx_nic *efx);
/* Disable interrupts and wait for ISRs to complete */
efx_nic_disable_interrupts(efx);
- if (efx->legacy_irq)
+ if (efx->legacy_irq) {
synchronize_irq(efx->legacy_irq);
+ efx->legacy_irq_enabled = false;
+ }
if (channel->irq)
synchronize_irq(channel->irq);
efx_channel_processed(channel);
napi_enable(&channel->napi_str);
+ if (efx->legacy_irq)
+ efx->legacy_irq_enabled = true;
efx_nic_enable_interrupts(efx);
}
*channel = *old_channel;
+ channel->napi_dev = NULL;
memset(&channel->eventq, 0, sizeof(channel->eventq));
rx_queue = &channel->rx_queue;
if (rc)
goto rollback;
+ efx_init_napi(efx);
+
/* Destroy old channels */
- for (i = 0; i < efx->n_channels; i++)
+ for (i = 0; i < efx->n_channels; i++) {
+ efx_fini_napi_channel(other_channel[i]);
efx_remove_channel(other_channel[i]);
+ }
out:
/* Free unused channel structures */
for (i = 0; i < efx->n_channels; i++)
efx_start_channel(channel);
}
+ if (efx->legacy_irq)
+ efx->legacy_irq_enabled = true;
efx_nic_enable_interrupts(efx);
/* Switch to event based MCDI completions after enabling interrupts.
/* Disable interrupts and wait for ISR to complete */
efx_nic_disable_interrupts(efx);
- if (efx->legacy_irq)
+ if (efx->legacy_irq) {
synchronize_irq(efx->legacy_irq);
+ efx->legacy_irq_enabled = false;
+ }
efx_for_each_channel(channel, efx) {
if (channel->irq)
synchronize_irq(channel->irq);
*
**************************************************************************/
-static int efx_init_napi(struct efx_nic *efx)
+static void efx_init_napi(struct efx_nic *efx)
{
struct efx_channel *channel;
netif_napi_add(channel->napi_dev, &channel->napi_str,
efx_poll, napi_weight);
}
- return 0;
+}
+
+static void efx_fini_napi_channel(struct efx_channel *channel)
+{
+ if (channel->napi_dev)
+ netif_napi_del(&channel->napi_str);
+ channel->napi_dev = NULL;
}
static void efx_fini_napi(struct efx_nic *efx)
{
struct efx_channel *channel;
- efx_for_each_channel(channel, efx) {
- if (channel->napi_dev)
- netif_napi_del(&channel->napi_str);
- channel->napi_dev = NULL;
- }
+ efx_for_each_channel(channel, efx)
+ efx_fini_napi_channel(channel);
}
/**************************************************************************
if (rc)
goto fail1;
- rc = efx_init_napi(efx);
- if (rc)
- goto fail2;
+ efx_init_napi(efx);
rc = efx->type->init(efx);
if (rc) {
efx->type->fini(efx);
fail3:
efx_fini_napi(efx);
- fail2:
efx_remove_all(efx);
fail1:
return rc;
* @pci_dev: The PCI device
* @type: Controller type attributes
* @legacy_irq: IRQ number
+ * @legacy_irq_enabled: Are IRQs enabled on NIC (INT_EN_KER register)?
* @workqueue: Workqueue for port reconfigures and the HW monitor.
* Work items do not hold and must not acquire RTNL.
* @workqueue_name: Name of workqueue
struct pci_dev *pci_dev;
const struct efx_nic_type *type;
int legacy_irq;
+ bool legacy_irq_enabled;
struct workqueue_struct *workqueue;
char workqueue_name[16];
struct work_struct reset_work;
u32 queues;
int syserr;
+ /* Could this be ours? If interrupts are disabled then the
+ * channel state may not be valid.
+ */
+ if (!efx->legacy_irq_enabled)
+ return result;
+
/* Read the ISR which also ACKs the interrupts */
efx_readd(efx, ®, FR_BZ_INT_ISR0);
queues = EFX_EXTRACT_DWORD(reg, 0, 31);
}
}
-static int stmmac_ethtool_set_tx_csum(struct net_device *netdev, u32 data)
-{
- if (data)
- netdev->features |= NETIF_F_HW_CSUM;
- else
- netdev->features &= ~NETIF_F_HW_CSUM;
-
- return 0;
-}
-
static u32 stmmac_ethtool_get_rx_csum(struct net_device *dev)
{
struct stmmac_priv *priv = netdev_priv(dev);
.get_link = ethtool_op_get_link,
.get_rx_csum = stmmac_ethtool_get_rx_csum,
.get_tx_csum = ethtool_op_get_tx_csum,
- .set_tx_csum = stmmac_ethtool_set_tx_csum,
+ .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_pauseparam = stmmac_get_pauseparam,
dev->netdev_ops = &stmmac_netdev_ops;
stmmac_set_ethtool_ops(dev);
- dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA);
+ dev->features |= NETIF_F_SG | NETIF_F_HIGHDMA |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
dev->watchdog_timeo = msecs_to_jiffies(watchdog);
#ifdef STMMAC_VLAN_TAG_USED
/* Both mac100 and gmac support receive VLAN tag detection */
pr_warning("\tno valid MAC address;"
"please, use ifconfig or nwhwconfig!\n");
+ spin_lock_init(&priv->lock);
+
ret = register_netdev(dev);
if (ret) {
pr_err("%s: ERROR %i registering the device\n",
DBG(probe, DEBUG, "%s: Scatter/Gather: %s - HW checksums: %s\n",
dev->name, (dev->features & NETIF_F_SG) ? "on" : "off",
- (dev->features & NETIF_F_HW_CSUM) ? "on" : "off");
-
- spin_lock_init(&priv->lock);
+ (dev->features & NETIF_F_IP_CSUM) ? "on" : "off");
return ret;
}
DMFE_DBUG(0, "dmfe_start_xmit", 0);
- /* Resource flag check */
- netif_stop_queue(dev);
-
/* Too large packet check */
if (skb->len > MAX_PACKET_SIZE) {
pr_err("big packet = %d\n", (u16)skb->len);
return NETDEV_TX_OK;
}
+ /* Resource flag check */
+ netif_stop_queue(dev);
+
spin_lock_irqsave(&db->lock, flags);
/* No Tx resource check, it never happen nromally */
#define UCC_GETH_UTFS_INIT 512 /* Tx virtual FIFO size
*/
#define UCC_GETH_UTFET_INIT 256 /* 1/2 utfs */
-#define UCC_GETH_UTFTT_INIT 512
+#define UCC_GETH_UTFTT_INIT 256 /* 1/2 utfs
+ due to errata */
/* Gigabit Ethernet (1000 Mbps) */
#define UCC_GETH_URFS_GIGA_INIT 4096/*2048*/ /* Rx virtual
FIFO size */
IEEE 802 "local assignment" bit is set in the address, a "usbX"
name is used instead.
+config USB_NET_CDC_NCM
+ tristate "CDC NCM support"
+ depends on USB_USBNET
+ default y
+ help
+ This driver provides support for CDC NCM (Network Control Model
+ Device USB Class Specification). The CDC NCM specification is
+ available from <http://www.usb.org/>.
+
+ Say "y" to link the driver statically, or "m" to build a
+ dynamically linked module.
+
+ This driver should work with at least the following devices:
+ * ST-Ericsson M700 LTE FDD/TDD Mobile Broadband Modem (ref. design)
+ * ST-Ericsson M5730 HSPA+ Mobile Broadband Modem (reference design)
+ * ST-Ericsson M570 HSPA+ Mobile Broadband Modem (reference design)
+ * ST-Ericsson M343 HSPA Mobile Broadband Modem (reference design)
+ * Ericsson F5521gw Mobile Broadband Module
+
config USB_NET_DM9601
tristate "Davicom DM9601 based USB 1.1 10/100 ethernet devices"
depends on USB_USBNET
obj-$(CONFIG_USB_IPHETH) += ipheth.o
obj-$(CONFIG_USB_SIERRA_NET) += sierra_net.o
obj-$(CONFIG_USB_NET_CX82310_ETH) += cx82310_eth.o
+obj-$(CONFIG_USB_NET_CDC_NCM) += cdc_ncm.o
--- /dev/null
+/*
+ * cdc_ncm.c
+ *
+ * Copyright (C) ST-Ericsson 2010
+ * Contact: Alexey Orishko <alexey.orishko@stericsson.com>
+ * Original author: Hans Petter Selasky <hans.petter.selasky@stericsson.com>
+ *
+ * USB Host Driver for Network Control Model (NCM)
+ * http://www.usb.org/developers/devclass_docs/NCM10.zip
+ *
+ * The NCM encoding, decoding and initialization logic
+ * derives from FreeBSD 8.x. if_cdce.c and if_cdcereg.h
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose this file to be licensed under the terms
+ * of the GNU General Public License (GPL) Version 2 or the 2-clause
+ * BSD license listed below:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/ctype.h>
+#include <linux/ethtool.h>
+#include <linux/workqueue.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+#include <linux/usb.h>
+#include <linux/version.h>
+#include <linux/timer.h>
+#include <linux/spinlock.h>
+#include <linux/atomic.h>
+#include <linux/usb/usbnet.h>
+#include <linux/usb/cdc.h>
+
+#define DRIVER_VERSION "30-Nov-2010"
+
+/* CDC NCM subclass 3.2.1 */
+#define USB_CDC_NCM_NDP16_LENGTH_MIN 0x10
+
+/* Maximum NTB length */
+#define CDC_NCM_NTB_MAX_SIZE_TX 16384 /* bytes */
+#define CDC_NCM_NTB_MAX_SIZE_RX 16384 /* bytes */
+
+/* Minimum value for MaxDatagramSize, ch. 6.2.9 */
+#define CDC_NCM_MIN_DATAGRAM_SIZE 1514 /* bytes */
+
+#define CDC_NCM_MIN_TX_PKT 512 /* bytes */
+
+/* Default value for MaxDatagramSize */
+#define CDC_NCM_MAX_DATAGRAM_SIZE 2048 /* bytes */
+
+/*
+ * Maximum amount of datagrams in NCM Datagram Pointer Table, not counting
+ * the last NULL entry. Any additional datagrams in NTB would be discarded.
+ */
+#define CDC_NCM_DPT_DATAGRAMS_MAX 32
+
+/* Restart the timer, if amount of datagrams is less than given value */
+#define CDC_NCM_RESTART_TIMER_DATAGRAM_CNT 3
+
+/* The following macro defines the minimum header space */
+#define CDC_NCM_MIN_HDR_SIZE \
+ (sizeof(struct usb_cdc_ncm_nth16) + sizeof(struct usb_cdc_ncm_ndp16) + \
+ (CDC_NCM_DPT_DATAGRAMS_MAX + 1) * sizeof(struct usb_cdc_ncm_dpe16))
+
+struct connection_speed_change {
+ __le32 USBitRate; /* holds 3GPP downlink value, bits per second */
+ __le32 DSBitRate; /* holds 3GPP uplink value, bits per second */
+} __attribute__ ((packed));
+
+struct cdc_ncm_data {
+ struct usb_cdc_ncm_nth16 nth16;
+ struct usb_cdc_ncm_ndp16 ndp16;
+ struct usb_cdc_ncm_dpe16 dpe16[CDC_NCM_DPT_DATAGRAMS_MAX + 1];
+};
+
+struct cdc_ncm_ctx {
+ struct cdc_ncm_data rx_ncm;
+ struct cdc_ncm_data tx_ncm;
+ struct usb_cdc_ncm_ntb_parameters ncm_parm;
+ struct timer_list tx_timer;
+
+ const struct usb_cdc_ncm_desc *func_desc;
+ const struct usb_cdc_header_desc *header_desc;
+ const struct usb_cdc_union_desc *union_desc;
+ const struct usb_cdc_ether_desc *ether_desc;
+
+ struct net_device *netdev;
+ struct usb_device *udev;
+ struct usb_host_endpoint *in_ep;
+ struct usb_host_endpoint *out_ep;
+ struct usb_host_endpoint *status_ep;
+ struct usb_interface *intf;
+ struct usb_interface *control;
+ struct usb_interface *data;
+
+ struct sk_buff *tx_curr_skb;
+ struct sk_buff *tx_rem_skb;
+
+ spinlock_t mtx;
+
+ u32 tx_timer_pending;
+ u32 tx_curr_offset;
+ u32 tx_curr_last_offset;
+ u32 tx_curr_frame_num;
+ u32 rx_speed;
+ u32 tx_speed;
+ u32 rx_max;
+ u32 tx_max;
+ u32 max_datagram_size;
+ u16 tx_max_datagrams;
+ u16 tx_remainder;
+ u16 tx_modulus;
+ u16 tx_ndp_modulus;
+ u16 tx_seq;
+ u16 connected;
+ u8 data_claimed;
+ u8 control_claimed;
+};
+
+static void cdc_ncm_tx_timeout(unsigned long arg);
+static const struct driver_info cdc_ncm_info;
+static struct usb_driver cdc_ncm_driver;
+static struct ethtool_ops cdc_ncm_ethtool_ops;
+
+static const struct usb_device_id cdc_devs[] = {
+ { USB_INTERFACE_INFO(USB_CLASS_COMM,
+ USB_CDC_SUBCLASS_NCM, USB_CDC_PROTO_NONE),
+ .driver_info = (unsigned long)&cdc_ncm_info,
+ },
+ {
+ },
+};
+
+MODULE_DEVICE_TABLE(usb, cdc_devs);
+
+static void
+cdc_ncm_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
+{
+ struct usbnet *dev = netdev_priv(net);
+
+ strncpy(info->driver, dev->driver_name, sizeof(info->driver));
+ strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
+ strncpy(info->fw_version, dev->driver_info->description,
+ sizeof(info->fw_version));
+ usb_make_path(dev->udev, info->bus_info, sizeof(info->bus_info));
+}
+
+static int
+cdc_ncm_do_request(struct cdc_ncm_ctx *ctx, struct usb_cdc_notification *req,
+ void *data, u16 flags, u16 *actlen, u16 timeout)
+{
+ int err;
+
+ err = usb_control_msg(ctx->udev, (req->bmRequestType & USB_DIR_IN) ?
+ usb_rcvctrlpipe(ctx->udev, 0) :
+ usb_sndctrlpipe(ctx->udev, 0),
+ req->bNotificationType, req->bmRequestType,
+ req->wValue,
+ req->wIndex, data,
+ req->wLength, timeout);
+
+ if (err < 0) {
+ if (actlen)
+ *actlen = 0;
+ return err;
+ }
+
+ if (actlen)
+ *actlen = err;
+
+ return 0;
+}
+
+static u8 cdc_ncm_setup(struct cdc_ncm_ctx *ctx)
+{
+ struct usb_cdc_notification req;
+ u32 val;
+ __le16 max_datagram_size;
+ u8 flags;
+ u8 iface_no;
+ int err;
+
+ iface_no = ctx->control->cur_altsetting->desc.bInterfaceNumber;
+
+ req.bmRequestType = USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE;
+ req.bNotificationType = USB_CDC_GET_NTB_PARAMETERS;
+ req.wValue = 0;
+ req.wIndex = cpu_to_le16(iface_no);
+ req.wLength = cpu_to_le16(sizeof(ctx->ncm_parm));
+
+ err = cdc_ncm_do_request(ctx, &req, &ctx->ncm_parm, 0, NULL, 1000);
+ if (err) {
+ pr_debug("failed GET_NTB_PARAMETERS\n");
+ return 1;
+ }
+
+ /* read correct set of parameters according to device mode */
+ ctx->rx_max = le32_to_cpu(ctx->ncm_parm.dwNtbInMaxSize);
+ ctx->tx_max = le32_to_cpu(ctx->ncm_parm.dwNtbOutMaxSize);
+ ctx->tx_remainder = le16_to_cpu(ctx->ncm_parm.wNdpOutPayloadRemainder);
+ ctx->tx_modulus = le16_to_cpu(ctx->ncm_parm.wNdpOutDivisor);
+ ctx->tx_ndp_modulus = le16_to_cpu(ctx->ncm_parm.wNdpOutAlignment);
+
+ if (ctx->func_desc != NULL)
+ flags = ctx->func_desc->bmNetworkCapabilities;
+ else
+ flags = 0;
+
+ pr_debug("dwNtbInMaxSize=%u dwNtbOutMaxSize=%u "
+ "wNdpOutPayloadRemainder=%u wNdpOutDivisor=%u "
+ "wNdpOutAlignment=%u flags=0x%x\n",
+ ctx->rx_max, ctx->tx_max, ctx->tx_remainder, ctx->tx_modulus,
+ ctx->tx_ndp_modulus, flags);
+
+ /* max count of tx datagrams without terminating NULL entry */
+ ctx->tx_max_datagrams = CDC_NCM_DPT_DATAGRAMS_MAX;
+
+ /* verify maximum size of received NTB in bytes */
+ if ((ctx->rx_max <
+ (CDC_NCM_MIN_HDR_SIZE + CDC_NCM_MIN_DATAGRAM_SIZE)) ||
+ (ctx->rx_max > CDC_NCM_NTB_MAX_SIZE_RX)) {
+ pr_debug("Using default maximum receive length=%d\n",
+ CDC_NCM_NTB_MAX_SIZE_RX);
+ ctx->rx_max = CDC_NCM_NTB_MAX_SIZE_RX;
+ }
+
+ /* verify maximum size of transmitted NTB in bytes */
+ if ((ctx->tx_max <
+ (CDC_NCM_MIN_HDR_SIZE + CDC_NCM_MIN_DATAGRAM_SIZE)) ||
+ (ctx->tx_max > CDC_NCM_NTB_MAX_SIZE_TX)) {
+ pr_debug("Using default maximum transmit length=%d\n",
+ CDC_NCM_NTB_MAX_SIZE_TX);
+ ctx->tx_max = CDC_NCM_NTB_MAX_SIZE_TX;
+ }
+
+ /*
+ * verify that the structure alignment is:
+ * - power of two
+ * - not greater than the maximum transmit length
+ * - not less than four bytes
+ */
+ val = ctx->tx_ndp_modulus;
+
+ if ((val < USB_CDC_NCM_NDP_ALIGN_MIN_SIZE) ||
+ (val != ((-val) & val)) || (val >= ctx->tx_max)) {
+ pr_debug("Using default alignment: 4 bytes\n");
+ ctx->tx_ndp_modulus = USB_CDC_NCM_NDP_ALIGN_MIN_SIZE;
+ }
+
+ /*
+ * verify that the payload alignment is:
+ * - power of two
+ * - not greater than the maximum transmit length
+ * - not less than four bytes
+ */
+ val = ctx->tx_modulus;
+
+ if ((val < USB_CDC_NCM_NDP_ALIGN_MIN_SIZE) ||
+ (val != ((-val) & val)) || (val >= ctx->tx_max)) {
+ pr_debug("Using default transmit modulus: 4 bytes\n");
+ ctx->tx_modulus = USB_CDC_NCM_NDP_ALIGN_MIN_SIZE;
+ }
+
+ /* verify the payload remainder */
+ if (ctx->tx_remainder >= ctx->tx_modulus) {
+ pr_debug("Using default transmit remainder: 0 bytes\n");
+ ctx->tx_remainder = 0;
+ }
+
+ /* adjust TX-remainder according to NCM specification. */
+ ctx->tx_remainder = ((ctx->tx_remainder - ETH_HLEN) &
+ (ctx->tx_modulus - 1));
+
+ /* additional configuration */
+
+ /* set CRC Mode */
+ req.bmRequestType = USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE;
+ req.bNotificationType = USB_CDC_SET_CRC_MODE;
+ req.wValue = cpu_to_le16(USB_CDC_NCM_CRC_NOT_APPENDED);
+ req.wIndex = cpu_to_le16(iface_no);
+ req.wLength = 0;
+
+ err = cdc_ncm_do_request(ctx, &req, NULL, 0, NULL, 1000);
+ if (err)
+ pr_debug("Setting CRC mode off failed\n");
+
+ /* set NTB format */
+ req.bmRequestType = USB_TYPE_CLASS | USB_DIR_OUT | USB_RECIP_INTERFACE;
+ req.bNotificationType = USB_CDC_SET_NTB_FORMAT;
+ req.wValue = cpu_to_le16(USB_CDC_NCM_NTB16_FORMAT);
+ req.wIndex = cpu_to_le16(iface_no);
+ req.wLength = 0;
+
+ err = cdc_ncm_do_request(ctx, &req, NULL, 0, NULL, 1000);
+ if (err)
+ pr_debug("Setting NTB format to 16-bit failed\n");
+
+ /* set Max Datagram Size (MTU) */
+ req.bmRequestType = USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE;
+ req.bNotificationType = USB_CDC_GET_MAX_DATAGRAM_SIZE;
+ req.wValue = 0;
+ req.wIndex = cpu_to_le16(iface_no);
+ req.wLength = cpu_to_le16(2);
+
+ err = cdc_ncm_do_request(ctx, &req, &max_datagram_size, 0, NULL, 1000);
+ if (err) {
+ pr_debug(" GET_MAX_DATAGRAM_SIZE failed, using size=%u\n",
+ CDC_NCM_MIN_DATAGRAM_SIZE);
+ /* use default */
+ ctx->max_datagram_size = CDC_NCM_MIN_DATAGRAM_SIZE;
+ } else {
+ ctx->max_datagram_size = le16_to_cpu(max_datagram_size);
+
+ if (ctx->max_datagram_size < CDC_NCM_MIN_DATAGRAM_SIZE)
+ ctx->max_datagram_size = CDC_NCM_MIN_DATAGRAM_SIZE;
+ else if (ctx->max_datagram_size > CDC_NCM_MAX_DATAGRAM_SIZE)
+ ctx->max_datagram_size = CDC_NCM_MAX_DATAGRAM_SIZE;
+ }
+
+ if (ctx->netdev->mtu != (ctx->max_datagram_size - ETH_HLEN))
+ ctx->netdev->mtu = ctx->max_datagram_size - ETH_HLEN;
+
+ return 0;
+}
+
+static void
+cdc_ncm_find_endpoints(struct cdc_ncm_ctx *ctx, struct usb_interface *intf)
+{
+ struct usb_host_endpoint *e;
+ u8 ep;
+
+ for (ep = 0; ep < intf->cur_altsetting->desc.bNumEndpoints; ep++) {
+
+ e = intf->cur_altsetting->endpoint + ep;
+ switch (e->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
+ case USB_ENDPOINT_XFER_INT:
+ if (usb_endpoint_dir_in(&e->desc)) {
+ if (ctx->status_ep == NULL)
+ ctx->status_ep = e;
+ }
+ break;
+
+ case USB_ENDPOINT_XFER_BULK:
+ if (usb_endpoint_dir_in(&e->desc)) {
+ if (ctx->in_ep == NULL)
+ ctx->in_ep = e;
+ } else {
+ if (ctx->out_ep == NULL)
+ ctx->out_ep = e;
+ }
+ break;
+
+ default:
+ break;
+ }
+ }
+}
+
+static void cdc_ncm_free(struct cdc_ncm_ctx *ctx)
+{
+ if (ctx == NULL)
+ return;
+
+ del_timer_sync(&ctx->tx_timer);
+
+ if (ctx->data_claimed) {
+ usb_set_intfdata(ctx->data, NULL);
+ usb_driver_release_interface(driver_of(ctx->intf), ctx->data);
+ }
+
+ if (ctx->control_claimed) {
+ usb_set_intfdata(ctx->control, NULL);
+ usb_driver_release_interface(driver_of(ctx->intf),
+ ctx->control);
+ }
+
+ if (ctx->tx_rem_skb != NULL) {
+ dev_kfree_skb_any(ctx->tx_rem_skb);
+ ctx->tx_rem_skb = NULL;
+ }
+
+ if (ctx->tx_curr_skb != NULL) {
+ dev_kfree_skb_any(ctx->tx_curr_skb);
+ ctx->tx_curr_skb = NULL;
+ }
+
+ kfree(ctx);
+}
+
+static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ struct cdc_ncm_ctx *ctx;
+ struct usb_driver *driver;
+ u8 *buf;
+ int len;
+ int temp;
+ u8 iface_no;
+
+ ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ if (ctx == NULL)
+ goto error;
+
+ memset(ctx, 0, sizeof(*ctx));
+
+ init_timer(&ctx->tx_timer);
+ spin_lock_init(&ctx->mtx);
+ ctx->netdev = dev->net;
+
+ /* store ctx pointer in device data field */
+ dev->data[0] = (unsigned long)ctx;
+
+ /* get some pointers */
+ driver = driver_of(intf);
+ buf = intf->cur_altsetting->extra;
+ len = intf->cur_altsetting->extralen;
+
+ ctx->udev = dev->udev;
+ ctx->intf = intf;
+
+ /* parse through descriptors associated with control interface */
+ while ((len > 0) && (buf[0] > 2) && (buf[0] <= len)) {
+
+ if (buf[1] != USB_DT_CS_INTERFACE)
+ goto advance;
+
+ switch (buf[2]) {
+ case USB_CDC_UNION_TYPE:
+ if (buf[0] < sizeof(*(ctx->union_desc)))
+ break;
+
+ ctx->union_desc =
+ (const struct usb_cdc_union_desc *)buf;
+
+ ctx->control = usb_ifnum_to_if(dev->udev,
+ ctx->union_desc->bMasterInterface0);
+ ctx->data = usb_ifnum_to_if(dev->udev,
+ ctx->union_desc->bSlaveInterface0);
+ break;
+
+ case USB_CDC_ETHERNET_TYPE:
+ if (buf[0] < sizeof(*(ctx->ether_desc)))
+ break;
+
+ ctx->ether_desc =
+ (const struct usb_cdc_ether_desc *)buf;
+
+ dev->hard_mtu =
+ le16_to_cpu(ctx->ether_desc->wMaxSegmentSize);
+
+ if (dev->hard_mtu <
+ (CDC_NCM_MIN_DATAGRAM_SIZE - ETH_HLEN))
+ dev->hard_mtu =
+ CDC_NCM_MIN_DATAGRAM_SIZE - ETH_HLEN;
+
+ else if (dev->hard_mtu >
+ (CDC_NCM_MAX_DATAGRAM_SIZE - ETH_HLEN))
+ dev->hard_mtu =
+ CDC_NCM_MAX_DATAGRAM_SIZE - ETH_HLEN;
+ break;
+
+ case USB_CDC_NCM_TYPE:
+ if (buf[0] < sizeof(*(ctx->func_desc)))
+ break;
+
+ ctx->func_desc = (const struct usb_cdc_ncm_desc *)buf;
+ break;
+
+ default:
+ break;
+ }
+advance:
+ /* advance to next descriptor */
+ temp = buf[0];
+ buf += temp;
+ len -= temp;
+ }
+
+ /* check if we got everything */
+ if ((ctx->control == NULL) || (ctx->data == NULL) ||
+ (ctx->ether_desc == NULL))
+ goto error;
+
+ /* claim interfaces, if any */
+ if (ctx->data != intf) {
+ temp = usb_driver_claim_interface(driver, ctx->data, dev);
+ if (temp)
+ goto error;
+ ctx->data_claimed = 1;
+ }
+
+ if (ctx->control != intf) {
+ temp = usb_driver_claim_interface(driver, ctx->control, dev);
+ if (temp)
+ goto error;
+ ctx->control_claimed = 1;
+ }
+
+ iface_no = ctx->data->cur_altsetting->desc.bInterfaceNumber;
+
+ /* reset data interface */
+ temp = usb_set_interface(dev->udev, iface_no, 0);
+ if (temp)
+ goto error;
+
+ /* initialize data interface */
+ if (cdc_ncm_setup(ctx))
+ goto error;
+
+ /* configure data interface */
+ temp = usb_set_interface(dev->udev, iface_no, 1);
+ if (temp)
+ goto error;
+
+ cdc_ncm_find_endpoints(ctx, ctx->data);
+ cdc_ncm_find_endpoints(ctx, ctx->control);
+
+ if ((ctx->in_ep == NULL) || (ctx->out_ep == NULL) ||
+ (ctx->status_ep == NULL))
+ goto error;
+
+ dev->net->ethtool_ops = &cdc_ncm_ethtool_ops;
+
+ usb_set_intfdata(ctx->data, dev);
+ usb_set_intfdata(ctx->control, dev);
+ usb_set_intfdata(ctx->intf, dev);
+
+ temp = usbnet_get_ethernet_addr(dev, ctx->ether_desc->iMACAddress);
+ if (temp)
+ goto error;
+
+ dev_info(&dev->udev->dev, "MAC-Address: "
+ "0x%02x:0x%02x:0x%02x:0x%02x:0x%02x:0x%02x\n",
+ dev->net->dev_addr[0], dev->net->dev_addr[1],
+ dev->net->dev_addr[2], dev->net->dev_addr[3],
+ dev->net->dev_addr[4], dev->net->dev_addr[5]);
+
+ dev->in = usb_rcvbulkpipe(dev->udev,
+ ctx->in_ep->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ dev->out = usb_sndbulkpipe(dev->udev,
+ ctx->out_ep->desc.bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
+ dev->status = ctx->status_ep;
+ dev->rx_urb_size = ctx->rx_max;
+
+ /*
+ * We should get an event when network connection is "connected" or
+ * "disconnected". Set network connection in "disconnected" state
+ * (carrier is OFF) during attach, so the IP network stack does not
+ * start IPv6 negotiation and more.
+ */
+ netif_carrier_off(dev->net);
+ ctx->tx_speed = ctx->rx_speed = 0;
+ return 0;
+
+error:
+ cdc_ncm_free((struct cdc_ncm_ctx *)dev->data[0]);
+ dev->data[0] = 0;
+ dev_info(&dev->udev->dev, "Descriptor failure\n");
+ return -ENODEV;
+}
+
+static void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf)
+{
+ struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0];
+ struct usb_driver *driver;
+
+ if (ctx == NULL)
+ return; /* no setup */
+
+ driver = driver_of(intf);
+
+ usb_set_intfdata(ctx->data, NULL);
+ usb_set_intfdata(ctx->control, NULL);
+ usb_set_intfdata(ctx->intf, NULL);
+
+ /* release interfaces, if any */
+ if (ctx->data_claimed) {
+ usb_driver_release_interface(driver, ctx->data);
+ ctx->data_claimed = 0;
+ }
+
+ if (ctx->control_claimed) {
+ usb_driver_release_interface(driver, ctx->control);
+ ctx->control_claimed = 0;
+ }
+
+ cdc_ncm_free(ctx);
+}
+
+static void cdc_ncm_zero_fill(u8 *ptr, u32 first, u32 end, u32 max)
+{
+ if (first >= max)
+ return;
+ if (first >= end)
+ return;
+ if (end > max)
+ end = max;
+ memset(ptr + first, 0, end - first);
+}
+
+static struct sk_buff *
+cdc_ncm_fill_tx_frame(struct cdc_ncm_ctx *ctx, struct sk_buff *skb)
+{
+ struct sk_buff *skb_out;
+ u32 rem;
+ u32 offset;
+ u32 last_offset;
+ u16 n = 0;
+ u8 timeout = 0;
+
+ /* if there is a remaining skb, it gets priority */
+ if (skb != NULL)
+ swap(skb, ctx->tx_rem_skb);
+ else
+ timeout = 1;
+
+ /*
+ * +----------------+
+ * | skb_out |
+ * +----------------+
+ * ^ offset
+ * ^ last_offset
+ */
+
+ /* check if we are resuming an OUT skb */
+ if (ctx->tx_curr_skb != NULL) {
+ /* pop variables */
+ skb_out = ctx->tx_curr_skb;
+ offset = ctx->tx_curr_offset;
+ last_offset = ctx->tx_curr_last_offset;
+ n = ctx->tx_curr_frame_num;
+
+ } else {
+ /* reset variables */
+ skb_out = alloc_skb(ctx->tx_max, GFP_ATOMIC);
+ if (skb_out == NULL) {
+ if (skb != NULL) {
+ dev_kfree_skb_any(skb);
+ ctx->netdev->stats.tx_dropped++;
+ }
+ goto exit_no_skb;
+ }
+
+ /* make room for NTH and NDP */
+ offset = ALIGN(sizeof(struct usb_cdc_ncm_nth16),
+ ctx->tx_ndp_modulus) +
+ sizeof(struct usb_cdc_ncm_ndp16) +
+ (ctx->tx_max_datagrams + 1) *
+ sizeof(struct usb_cdc_ncm_dpe16);
+
+ /* store last valid offset before alignment */
+ last_offset = offset;
+ /* align first Datagram offset correctly */
+ offset = ALIGN(offset, ctx->tx_modulus) + ctx->tx_remainder;
+ /* zero buffer till the first IP datagram */
+ cdc_ncm_zero_fill(skb_out->data, 0, offset, offset);
+ n = 0;
+ ctx->tx_curr_frame_num = 0;
+ }
+
+ for (; n < ctx->tx_max_datagrams; n++) {
+ /* check if end of transmit buffer is reached */
+ if (offset >= ctx->tx_max)
+ break;
+
+ /* compute maximum buffer size */
+ rem = ctx->tx_max - offset;
+
+ if (skb == NULL) {
+ skb = ctx->tx_rem_skb;
+ ctx->tx_rem_skb = NULL;
+
+ /* check for end of skb */
+ if (skb == NULL)
+ break;
+ }
+
+ if (skb->len > rem) {
+ if (n == 0) {
+ /* won't fit, MTU problem? */
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ ctx->netdev->stats.tx_dropped++;
+ } else {
+ /* no room for skb - store for later */
+ if (ctx->tx_rem_skb != NULL) {
+ dev_kfree_skb_any(ctx->tx_rem_skb);
+ ctx->netdev->stats.tx_dropped++;
+ }
+ ctx->tx_rem_skb = skb;
+ skb = NULL;
+
+ /* loop one more time */
+ timeout = 1;
+ }
+ break;
+ }
+
+ memcpy(((u8 *)skb_out->data) + offset, skb->data, skb->len);
+
+ ctx->tx_ncm.dpe16[n].wDatagramLength = cpu_to_le16(skb->len);
+ ctx->tx_ncm.dpe16[n].wDatagramIndex = cpu_to_le16(offset);
+
+ /* update offset */
+ offset += skb->len;
+
+ /* store last valid offset before alignment */
+ last_offset = offset;
+
+ /* align offset correctly */
+ offset = ALIGN(offset, ctx->tx_modulus) + ctx->tx_remainder;
+
+ /* zero padding */
+ cdc_ncm_zero_fill(skb_out->data, last_offset, offset,
+ ctx->tx_max);
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ }
+
+ /* free up any dangling skb */
+ if (skb != NULL) {
+ dev_kfree_skb_any(skb);
+ skb = NULL;
+ ctx->netdev->stats.tx_dropped++;
+ }
+
+ ctx->tx_curr_frame_num = n;
+
+ if (n == 0) {
+ /* wait for more frames */
+ /* push variables */
+ ctx->tx_curr_skb = skb_out;
+ ctx->tx_curr_offset = offset;
+ ctx->tx_curr_last_offset = last_offset;
+ goto exit_no_skb;
+
+ } else if ((n < ctx->tx_max_datagrams) && (timeout == 0)) {
+ /* wait for more frames */
+ /* push variables */
+ ctx->tx_curr_skb = skb_out;
+ ctx->tx_curr_offset = offset;
+ ctx->tx_curr_last_offset = last_offset;
+ /* set the pending count */
+ if (n < CDC_NCM_RESTART_TIMER_DATAGRAM_CNT)
+ ctx->tx_timer_pending = 2;
+ goto exit_no_skb;
+
+ } else {
+ /* frame goes out */
+ /* variables will be reset at next call */
+ }
+
+ /* check for overflow */
+ if (last_offset > ctx->tx_max)
+ last_offset = ctx->tx_max;
+
+ /* revert offset */
+ offset = last_offset;
+
+ /*
+ * If collected data size is less or equal CDC_NCM_MIN_TX_PKT bytes,
+ * we send buffers as it is. If we get more data, it would be more
+ * efficient for USB HS mobile device with DMA engine to receive a full
+ * size NTB, than canceling DMA transfer and receiving a short packet.
+ */
+ if (offset > CDC_NCM_MIN_TX_PKT)
+ offset = ctx->tx_max;
+
+ /* final zero padding */
+ cdc_ncm_zero_fill(skb_out->data, last_offset, offset, ctx->tx_max);
+
+ /* store last offset */
+ last_offset = offset;
+
+ if ((last_offset < ctx->tx_max) && ((last_offset %
+ le16_to_cpu(ctx->out_ep->desc.wMaxPacketSize)) == 0)) {
+ /* force short packet */
+ *(((u8 *)skb_out->data) + last_offset) = 0;
+ last_offset++;
+ }
+
+ /* zero the rest of the DPEs plus the last NULL entry */
+ for (; n <= CDC_NCM_DPT_DATAGRAMS_MAX; n++) {
+ ctx->tx_ncm.dpe16[n].wDatagramLength = 0;
+ ctx->tx_ncm.dpe16[n].wDatagramIndex = 0;
+ }
+
+ /* fill out 16-bit NTB header */
+ ctx->tx_ncm.nth16.dwSignature = cpu_to_le32(USB_CDC_NCM_NTH16_SIGN);
+ ctx->tx_ncm.nth16.wHeaderLength =
+ cpu_to_le16(sizeof(ctx->tx_ncm.nth16));
+ ctx->tx_ncm.nth16.wSequence = cpu_to_le16(ctx->tx_seq);
+ ctx->tx_ncm.nth16.wBlockLength = cpu_to_le16(last_offset);
+ ctx->tx_ncm.nth16.wFpIndex = ALIGN(sizeof(struct usb_cdc_ncm_nth16),
+ ctx->tx_ndp_modulus);
+
+ memcpy(skb_out->data, &(ctx->tx_ncm.nth16), sizeof(ctx->tx_ncm.nth16));
+ ctx->tx_seq++;
+
+ /* fill out 16-bit NDP table */
+ ctx->tx_ncm.ndp16.dwSignature =
+ cpu_to_le32(USB_CDC_NCM_NDP16_NOCRC_SIGN);
+ rem = sizeof(ctx->tx_ncm.ndp16) + ((ctx->tx_curr_frame_num + 1) *
+ sizeof(struct usb_cdc_ncm_dpe16));
+ ctx->tx_ncm.ndp16.wLength = cpu_to_le16(rem);
+ ctx->tx_ncm.ndp16.wNextFpIndex = 0; /* reserved */
+
+ memcpy(((u8 *)skb_out->data) + ctx->tx_ncm.nth16.wFpIndex,
+ &(ctx->tx_ncm.ndp16),
+ sizeof(ctx->tx_ncm.ndp16));
+
+ memcpy(((u8 *)skb_out->data) + ctx->tx_ncm.nth16.wFpIndex +
+ sizeof(ctx->tx_ncm.ndp16),
+ &(ctx->tx_ncm.dpe16),
+ (ctx->tx_curr_frame_num + 1) *
+ sizeof(struct usb_cdc_ncm_dpe16));
+
+ /* set frame length */
+ skb_put(skb_out, last_offset);
+
+ /* return skb */
+ ctx->tx_curr_skb = NULL;
+ return skb_out;
+
+exit_no_skb:
+ return NULL;
+}
+
+static void cdc_ncm_tx_timeout_start(struct cdc_ncm_ctx *ctx)
+{
+ /* start timer, if not already started */
+ if (timer_pending(&ctx->tx_timer) == 0) {
+ ctx->tx_timer.function = &cdc_ncm_tx_timeout;
+ ctx->tx_timer.data = (unsigned long)ctx;
+ ctx->tx_timer.expires = jiffies + ((HZ + 999) / 1000);
+ add_timer(&ctx->tx_timer);
+ }
+}
+
+static void cdc_ncm_tx_timeout(unsigned long arg)
+{
+ struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)arg;
+ u8 restart;
+
+ spin_lock(&ctx->mtx);
+ if (ctx->tx_timer_pending != 0) {
+ ctx->tx_timer_pending--;
+ restart = 1;
+ } else
+ restart = 0;
+
+ spin_unlock(&ctx->mtx);
+
+ if (restart)
+ cdc_ncm_tx_timeout_start(ctx);
+ else if (ctx->netdev != NULL)
+ usbnet_start_xmit(NULL, ctx->netdev);
+}
+
+static struct sk_buff *
+cdc_ncm_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
+{
+ struct sk_buff *skb_out;
+ struct cdc_ncm_ctx *ctx = (struct cdc_ncm_ctx *)dev->data[0];
+ u8 need_timer = 0;
+
+ /*
+ * The Ethernet API we are using does not support transmitting
+ * multiple Ethernet frames in a single call. This driver will
+ * accumulate multiple Ethernet frames and send out a larger
+ * USB frame when the USB buffer is full or when a single jiffies
+ * timeout happens.
+ */
+ if (ctx == NULL)
+ goto error;
+
+ spin_lock(&ctx->mtx);
+ skb_out = cdc_ncm_fill_tx_frame(ctx, skb);
+ if (ctx->tx_curr_skb != NULL)
+ need_timer = 1;
+ spin_unlock(&ctx->mtx);
+
+ /* Start timer, if there is a remaining skb */
+ if (need_timer)
+ cdc_ncm_tx_timeout_start(ctx);
+
+ if (skb_out)
+ dev->net->stats.tx_packets += ctx->tx_curr_frame_num;
+ return skb_out;
+
+error:
+ if (skb != NULL)
+ dev_kfree_skb_any(skb);
+
+ return NULL;
+}
+
+static int cdc_ncm_rx_fixup(struct usbnet *dev, struct sk_buff *skb_in)
+{
+ struct sk_buff *skb;
+ struct cdc_ncm_ctx *ctx;
+ int sumlen;
+ int actlen;
+ int temp;
+ int nframes;
+ int x;
+ int offset;
+
+ ctx = (struct cdc_ncm_ctx *)dev->data[0];
+ if (ctx == NULL)
+ goto error;
+
+ actlen = skb_in->len;
+ sumlen = CDC_NCM_NTB_MAX_SIZE_RX;
+
+ if (actlen < (sizeof(ctx->rx_ncm.nth16) + sizeof(ctx->rx_ncm.ndp16))) {
+ pr_debug("frame too short\n");
+ goto error;
+ }
+
+ memcpy(&(ctx->rx_ncm.nth16), ((u8 *)skb_in->data),
+ sizeof(ctx->rx_ncm.nth16));
+
+ if (le32_to_cpu(ctx->rx_ncm.nth16.dwSignature) !=
+ USB_CDC_NCM_NTH16_SIGN) {
+ pr_debug("invalid NTH16 signature <%u>\n",
+ le32_to_cpu(ctx->rx_ncm.nth16.dwSignature));
+ goto error;
+ }
+
+ temp = le16_to_cpu(ctx->rx_ncm.nth16.wBlockLength);
+ if (temp > sumlen) {
+ pr_debug("unsupported NTB block length %u/%u\n", temp, sumlen);
+ goto error;
+ }
+
+ temp = le16_to_cpu(ctx->rx_ncm.nth16.wFpIndex);
+ if ((temp + sizeof(ctx->rx_ncm.ndp16)) > actlen) {
+ pr_debug("invalid DPT16 index\n");
+ goto error;
+ }
+
+ memcpy(&(ctx->rx_ncm.ndp16), ((u8 *)skb_in->data) + temp,
+ sizeof(ctx->rx_ncm.ndp16));
+
+ if (le32_to_cpu(ctx->rx_ncm.ndp16.dwSignature) !=
+ USB_CDC_NCM_NDP16_NOCRC_SIGN) {
+ pr_debug("invalid DPT16 signature <%u>\n",
+ le32_to_cpu(ctx->rx_ncm.ndp16.dwSignature));
+ goto error;
+ }
+
+ if (le16_to_cpu(ctx->rx_ncm.ndp16.wLength) <
+ USB_CDC_NCM_NDP16_LENGTH_MIN) {
+ pr_debug("invalid DPT16 length <%u>\n",
+ le32_to_cpu(ctx->rx_ncm.ndp16.dwSignature));
+ goto error;
+ }
+
+ nframes = ((le16_to_cpu(ctx->rx_ncm.ndp16.wLength) -
+ sizeof(struct usb_cdc_ncm_ndp16)) /
+ sizeof(struct usb_cdc_ncm_dpe16));
+ nframes--; /* we process NDP entries except for the last one */
+
+ pr_debug("nframes = %u\n", nframes);
+
+ temp += sizeof(ctx->rx_ncm.ndp16);
+
+ if ((temp + nframes * (sizeof(struct usb_cdc_ncm_dpe16))) > actlen) {
+ pr_debug("Invalid nframes = %d\n", nframes);
+ goto error;
+ }
+
+ if (nframes > CDC_NCM_DPT_DATAGRAMS_MAX) {
+ pr_debug("Truncating number of frames from %u to %u\n",
+ nframes, CDC_NCM_DPT_DATAGRAMS_MAX);
+ nframes = CDC_NCM_DPT_DATAGRAMS_MAX;
+ }
+
+ memcpy(&(ctx->rx_ncm.dpe16), ((u8 *)skb_in->data) + temp,
+ nframes * (sizeof(struct usb_cdc_ncm_dpe16)));
+
+ for (x = 0; x < nframes; x++) {
+ offset = le16_to_cpu(ctx->rx_ncm.dpe16[x].wDatagramIndex);
+ temp = le16_to_cpu(ctx->rx_ncm.dpe16[x].wDatagramLength);
+
+ /*
+ * CDC NCM ch. 3.7
+ * All entries after first NULL entry are to be ignored
+ */
+ if ((offset == 0) || (temp == 0)) {
+ if (!x)
+ goto error; /* empty NTB */
+ break;
+ }
+
+ /* sanity checking */
+ if (((offset + temp) > actlen) ||
+ (temp > CDC_NCM_MAX_DATAGRAM_SIZE) || (temp < ETH_HLEN)) {
+ pr_debug("invalid frame detected (ignored)"
+ "offset[%u]=%u, length=%u, skb=%p\n",
+ x, offset, temp, skb);
+ if (!x)
+ goto error;
+ break;
+
+ } else {
+ skb = skb_clone(skb_in, GFP_ATOMIC);
+ skb->len = temp;
+ skb->data = ((u8 *)skb_in->data) + offset;
+ skb_set_tail_pointer(skb, temp);
+ usbnet_skb_return(dev, skb);
+ }
+ }
+ return 1;
+error:
+ return 0;
+}
+
+static void
+cdc_ncm_speed_change(struct cdc_ncm_ctx *ctx,
+ struct connection_speed_change *data)
+{
+ uint32_t rx_speed = le32_to_cpu(data->USBitRate);
+ uint32_t tx_speed = le32_to_cpu(data->DSBitRate);
+
+ /*
+ * Currently the USB-NET API does not support reporting the actual
+ * device speed. Do print it instead.
+ */
+ if ((tx_speed != ctx->tx_speed) || (rx_speed != ctx->rx_speed)) {
+ ctx->tx_speed = tx_speed;
+ ctx->rx_speed = rx_speed;
+
+ if ((tx_speed > 1000000) && (rx_speed > 1000000)) {
+ printk(KERN_INFO KBUILD_MODNAME
+ ": %s: %u mbit/s downlink "
+ "%u mbit/s uplink\n",
+ ctx->netdev->name,
+ (unsigned int)(rx_speed / 1000000U),
+ (unsigned int)(tx_speed / 1000000U));
+ } else {
+ printk(KERN_INFO KBUILD_MODNAME
+ ": %s: %u kbit/s downlink "
+ "%u kbit/s uplink\n",
+ ctx->netdev->name,
+ (unsigned int)(rx_speed / 1000U),
+ (unsigned int)(tx_speed / 1000U));
+ }
+ }
+}
+
+static void cdc_ncm_status(struct usbnet *dev, struct urb *urb)
+{
+ struct cdc_ncm_ctx *ctx;
+ struct usb_cdc_notification *event;
+
+ ctx = (struct cdc_ncm_ctx *)dev->data[0];
+
+ if (urb->actual_length < sizeof(*event))
+ return;
+
+ /* test for split data in 8-byte chunks */
+ if (test_and_clear_bit(EVENT_STS_SPLIT, &dev->flags)) {
+ cdc_ncm_speed_change(ctx,
+ (struct connection_speed_change *)urb->transfer_buffer);
+ return;
+ }
+
+ event = urb->transfer_buffer;
+
+ switch (event->bNotificationType) {
+ case USB_CDC_NOTIFY_NETWORK_CONNECTION:
+ /*
+ * According to the CDC NCM specification ch.7.1
+ * USB_CDC_NOTIFY_NETWORK_CONNECTION notification shall be
+ * sent by device after USB_CDC_NOTIFY_SPEED_CHANGE.
+ */
+ ctx->connected = event->wValue;
+
+ printk(KERN_INFO KBUILD_MODNAME ": %s: network connection:"
+ " %sconnected\n",
+ ctx->netdev->name, ctx->connected ? "" : "dis");
+
+ if (ctx->connected)
+ netif_carrier_on(dev->net);
+ else {
+ netif_carrier_off(dev->net);
+ ctx->tx_speed = ctx->rx_speed = 0;
+ }
+ break;
+
+ case USB_CDC_NOTIFY_SPEED_CHANGE:
+ if (urb->actual_length <
+ (sizeof(*event) + sizeof(struct connection_speed_change)))
+ set_bit(EVENT_STS_SPLIT, &dev->flags);
+ else
+ cdc_ncm_speed_change(ctx,
+ (struct connection_speed_change *) &event[1]);
+ break;
+
+ default:
+ dev_err(&dev->udev->dev, "NCM: unexpected "
+ "notification 0x%02x!\n", event->bNotificationType);
+ break;
+ }
+}
+
+static int cdc_ncm_check_connect(struct usbnet *dev)
+{
+ struct cdc_ncm_ctx *ctx;
+
+ ctx = (struct cdc_ncm_ctx *)dev->data[0];
+ if (ctx == NULL)
+ return 1; /* disconnected */
+
+ return !ctx->connected;
+}
+
+static int
+cdc_ncm_probe(struct usb_interface *udev, const struct usb_device_id *prod)
+{
+ return usbnet_probe(udev, prod);
+}
+
+static void cdc_ncm_disconnect(struct usb_interface *intf)
+{
+ struct usbnet *dev = usb_get_intfdata(intf);
+
+ if (dev == NULL)
+ return; /* already disconnected */
+
+ usbnet_disconnect(intf);
+}
+
+static int cdc_ncm_manage_power(struct usbnet *dev, int status)
+{
+ dev->intf->needs_remote_wakeup = status;
+ return 0;
+}
+
+static const struct driver_info cdc_ncm_info = {
+ .description = "CDC NCM",
+ .flags = FLAG_NO_SETINT | FLAG_MULTI_PACKET,
+ .bind = cdc_ncm_bind,
+ .unbind = cdc_ncm_unbind,
+ .check_connect = cdc_ncm_check_connect,
+ .manage_power = cdc_ncm_manage_power,
+ .status = cdc_ncm_status,
+ .rx_fixup = cdc_ncm_rx_fixup,
+ .tx_fixup = cdc_ncm_tx_fixup,
+};
+
+static struct usb_driver cdc_ncm_driver = {
+ .name = "cdc_ncm",
+ .id_table = cdc_devs,
+ .probe = cdc_ncm_probe,
+ .disconnect = cdc_ncm_disconnect,
+ .suspend = usbnet_suspend,
+ .resume = usbnet_resume,
+ .supports_autosuspend = 1,
+};
+
+static struct ethtool_ops cdc_ncm_ethtool_ops = {
+ .get_drvinfo = cdc_ncm_get_drvinfo,
+ .get_link = usbnet_get_link,
+ .get_msglevel = usbnet_get_msglevel,
+ .set_msglevel = usbnet_set_msglevel,
+ .get_settings = usbnet_get_settings,
+ .set_settings = usbnet_set_settings,
+ .nway_reset = usbnet_nway_reset,
+};
+
+static int __init cdc_ncm_init(void)
+{
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION "\n");
+ return usb_register(&cdc_ncm_driver);
+}
+
+module_init(cdc_ncm_init);
+
+static void __exit cdc_ncm_exit(void)
+{
+ usb_deregister(&cdc_ncm_driver);
+}
+
+module_exit(cdc_ncm_exit);
+
+MODULE_AUTHOR("Hans Petter Selasky");
+MODULE_DESCRIPTION("USB CDC NCM host driver");
+MODULE_LICENSE("Dual BSD/GPL");
case HSO_INTF_BULK:
/* It's a regular bulk interface */
- if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
- !disable_net)
- hso_dev = hso_create_net_device(interface, port_spec);
- else
+ if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
+ if (!disable_net)
+ hso_dev =
+ hso_create_net_device(interface, port_spec);
+ } else {
hso_dev =
hso_create_bulk_serial_device(interface, port_spec);
+ }
if (!hso_dev)
goto exit;
break;
goto error;
// else network stack removes extra byte if we forced a short packet
- if (skb->len)
- usbnet_skb_return (dev, skb);
- else {
- netif_dbg(dev, rx_err, dev->net, "drop\n");
-error:
- dev->net->stats.rx_errors++;
- skb_queue_tail (&dev->done, skb);
+ if (skb->len) {
+ /* all data was already cloned from skb inside the driver */
+ if (dev->driver_info->flags & FLAG_MULTI_PACKET)
+ dev_kfree_skb_any(skb);
+ else
+ usbnet_skb_return(dev, skb);
+ return;
}
+
+ netif_dbg(dev, rx_err, dev->net, "drop\n");
+error:
+ dev->net->stats.rx_errors++;
+ skb_queue_tail(&dev->done, skb);
}
/*-------------------------------------------------------------------------*/
struct usbnet *dev = entry->dev;
if (urb->status == 0) {
- dev->net->stats.tx_packets++;
+ if (!(dev->driver_info->flags & FLAG_MULTI_PACKET))
+ dev->net->stats.tx_packets++;
dev->net->stats.tx_bytes += entry->length;
} else {
dev->net->stats.tx_errors++;
if (info->tx_fixup) {
skb = info->tx_fixup (dev, skb, GFP_ATOMIC);
if (!skb) {
- netif_dbg(dev, tx_err, dev->net, "can't tx_fixup skb\n");
- goto drop;
+ if (netif_msg_tx_err(dev)) {
+ netif_dbg(dev, tx_err, dev->net, "can't tx_fixup skb\n");
+ goto drop;
+ } else {
+ /* cdc_ncm collected packet; waits for more */
+ goto not_drop;
+ }
}
}
length = skb->len;
/* don't assume the hardware handles USB_ZERO_PACKET
* NOTE: strictly conforming cdc-ether devices should expect
* the ZLP here, but ignore the one-byte packet.
+ * NOTE2: CDC NCM specification is different from CDC ECM when
+ * handling ZLP/short packets, so cdc_ncm driver will make short
+ * packet itself if needed.
*/
if (length % dev->maxpacket == 0) {
if (!(info->flags & FLAG_SEND_ZLP)) {
- urb->transfer_buffer_length++;
- if (skb_tailroom(skb)) {
- skb->data[skb->len] = 0;
- __skb_put(skb, 1);
+ if (!(info->flags & FLAG_MULTI_PACKET)) {
+ urb->transfer_buffer_length++;
+ if (skb_tailroom(skb)) {
+ skb->data[skb->len] = 0;
+ __skb_put(skb, 1);
+ }
}
} else
urb->transfer_flags |= URB_ZERO_PACKET;
netif_dbg(dev, tx_err, dev->net, "drop, code %d\n", retval);
drop:
dev->net->stats.tx_dropped++;
+not_drop:
if (skb)
dev_kfree_skb_any (skb);
usb_free_urb (urb);
*/
#define DRV_NAME "via-rhine"
-#define DRV_VERSION "1.4.3"
-#define DRV_RELDATE "2007-03-06"
+#define DRV_VERSION "1.5.0"
+#define DRV_RELDATE "2010-10-09"
/* A few user-configurable values.
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/crc32.h>
+#include <linux/if_vlan.h>
#include <linux/bitops.h>
#include <linux/workqueue.h>
#include <asm/processor.h> /* Processor type for cache alignment. */
MODULE_PARM_DESC(rx_copybreak, "VIA Rhine copy breakpoint for copy-only-tiny-frames");
MODULE_PARM_DESC(avoid_D3, "Avoid power state D3 (work-around for broken BIOSes)");
+#define MCAM_SIZE 32
+#define VCAM_SIZE 32
+
/*
Theory of Operation
/* Offsets to the device registers. */
enum register_offsets {
StationAddr=0x00, RxConfig=0x06, TxConfig=0x07, ChipCmd=0x08,
- ChipCmd1=0x09,
+ ChipCmd1=0x09, TQWake=0x0A,
IntrStatus=0x0C, IntrEnable=0x0E,
MulticastFilter0=0x10, MulticastFilter1=0x14,
RxRingPtr=0x18, TxRingPtr=0x1C, GFIFOTest=0x54,
- MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIBusConfig=0x6E,
+ MIIPhyAddr=0x6C, MIIStatus=0x6D, PCIBusConfig=0x6E, PCIBusConfig1=0x6F,
MIICmd=0x70, MIIRegAddr=0x71, MIIData=0x72, MACRegEEcsr=0x74,
ConfigA=0x78, ConfigB=0x79, ConfigC=0x7A, ConfigD=0x7B,
RxMissed=0x7C, RxCRCErrs=0x7E, MiscCmd=0x81,
StickyHW=0x83, IntrStatus2=0x84,
+ CamMask=0x88, CamCon=0x92, CamAddr=0x93,
WOLcrSet=0xA0, PwcfgSet=0xA1, WOLcgSet=0xA3, WOLcrClr=0xA4,
WOLcrClr1=0xA6, WOLcgClr=0xA7,
PwrcsrSet=0xA8, PwrcsrSet1=0xA9, PwrcsrClr=0xAC, PwrcsrClr1=0xAD,
BackCaptureEffect=0x04, BackRandom=0x08
};
+/* Bits in the TxConfig (TCR) register */
+enum tcr_bits {
+ TCR_PQEN=0x01,
+ TCR_LB0=0x02, /* loopback[0] */
+ TCR_LB1=0x04, /* loopback[1] */
+ TCR_OFSET=0x08,
+ TCR_RTGOPT=0x10,
+ TCR_RTFT0=0x20,
+ TCR_RTFT1=0x40,
+ TCR_RTSF=0x80,
+};
+
+/* Bits in the CamCon (CAMC) register */
+enum camcon_bits {
+ CAMC_CAMEN=0x01,
+ CAMC_VCAMSL=0x02,
+ CAMC_CAMWR=0x04,
+ CAMC_CAMRD=0x08,
+};
+
+/* Bits in the PCIBusConfig1 (BCR1) register */
+enum bcr1_bits {
+ BCR1_POT0=0x01,
+ BCR1_POT1=0x02,
+ BCR1_POT2=0x04,
+ BCR1_CTFT0=0x08,
+ BCR1_CTFT1=0x10,
+ BCR1_CTSF=0x20,
+ BCR1_TXQNOBK=0x40, /* for VT6105 */
+ BCR1_VIDFR=0x80, /* for VT6105 */
+ BCR1_MED0=0x40, /* for VT6102 */
+ BCR1_MED1=0x80, /* for VT6102 */
+};
+
#ifdef USE_MMIO
/* Registers we check that mmio and reg are the same. */
static const int mmio_verify_registers[] = {
DescOwn=0x80000000
};
+/* Bits in *_desc.*_length */
+enum desc_length_bits {
+ DescTag=0x00010000
+};
+
/* Bits in ChipCmd. */
enum chip_cmd_bits {
CmdInit=0x01, CmdStart=0x02, CmdStop=0x04, CmdRxOn=0x08,
};
struct rhine_private {
+ /* Bit mask for configured VLAN ids */
+ unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+
/* Descriptor rings */
struct rx_desc *rx_ring;
struct tx_desc *tx_ring;
void __iomem *base;
};
+#define BYTE_REG_BITS_ON(x, p) do { iowrite8((ioread8((p))|(x)), (p)); } while (0)
+#define WORD_REG_BITS_ON(x, p) do { iowrite16((ioread16((p))|(x)), (p)); } while (0)
+#define DWORD_REG_BITS_ON(x, p) do { iowrite32((ioread32((p))|(x)), (p)); } while (0)
+
+#define BYTE_REG_BITS_IS_ON(x, p) (ioread8((p)) & (x))
+#define WORD_REG_BITS_IS_ON(x, p) (ioread16((p)) & (x))
+#define DWORD_REG_BITS_IS_ON(x, p) (ioread32((p)) & (x))
+
+#define BYTE_REG_BITS_OFF(x, p) do { iowrite8(ioread8((p)) & (~(x)), (p)); } while (0)
+#define WORD_REG_BITS_OFF(x, p) do { iowrite16(ioread16((p)) & (~(x)), (p)); } while (0)
+#define DWORD_REG_BITS_OFF(x, p) do { iowrite32(ioread32((p)) & (~(x)), (p)); } while (0)
+
+#define BYTE_REG_BITS_SET(x, m, p) do { iowrite8((ioread8((p)) & (~(m)))|(x), (p)); } while (0)
+#define WORD_REG_BITS_SET(x, m, p) do { iowrite16((ioread16((p)) & (~(m)))|(x), (p)); } while (0)
+#define DWORD_REG_BITS_SET(x, m, p) do { iowrite32((ioread32((p)) & (~(m)))|(x), (p)); } while (0)
+
+
static int mdio_read(struct net_device *dev, int phy_id, int location);
static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
static int rhine_open(struct net_device *dev);
static const struct ethtool_ops netdev_ethtool_ops;
static int rhine_close(struct net_device *dev);
static void rhine_shutdown (struct pci_dev *pdev);
+static void rhine_vlan_rx_add_vid(struct net_device *dev, unsigned short vid);
+static void rhine_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid);
+static void rhine_set_cam(void __iomem *ioaddr, int idx, u8 *addr);
+static void rhine_set_vlan_cam(void __iomem *ioaddr, int idx, u8 *addr);
+static void rhine_set_cam_mask(void __iomem *ioaddr, u32 mask);
+static void rhine_set_vlan_cam_mask(void __iomem *ioaddr, u32 mask);
+static void rhine_init_cam_filter(struct net_device *dev);
+static void rhine_update_vcam(struct net_device *dev);
#define RHINE_WAIT_FOR(condition) do { \
int i=1024; \
.ndo_set_mac_address = eth_mac_addr,
.ndo_do_ioctl = netdev_ioctl,
.ndo_tx_timeout = rhine_tx_timeout,
+ .ndo_vlan_rx_add_vid = rhine_vlan_rx_add_vid,
+ .ndo_vlan_rx_kill_vid = rhine_vlan_rx_kill_vid,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = rhine_poll,
#endif
if (rp->quirks & rqRhineI)
dev->features |= NETIF_F_SG|NETIF_F_HW_CSUM;
+ if (pdev->revision >= VT6105M)
+ dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
+ NETIF_F_HW_VLAN_FILTER;
+
/* dev->name not defined before register_netdev()! */
rc = register_netdev(dev);
if (rc)
netif_carrier_ok(mii->dev));
}
+/**
+ * rhine_set_cam - set CAM multicast filters
+ * @ioaddr: register block of this Rhine
+ * @idx: multicast CAM index [0..MCAM_SIZE-1]
+ * @addr: multicast address (6 bytes)
+ *
+ * Load addresses into multicast filters.
+ */
+static void rhine_set_cam(void __iomem *ioaddr, int idx, u8 *addr)
+{
+ int i;
+
+ iowrite8(CAMC_CAMEN, ioaddr + CamCon);
+ wmb();
+
+ /* Paranoid -- idx out of range should never happen */
+ idx &= (MCAM_SIZE - 1);
+
+ iowrite8((u8) idx, ioaddr + CamAddr);
+
+ for (i = 0; i < 6; i++, addr++)
+ iowrite8(*addr, ioaddr + MulticastFilter0 + i);
+ udelay(10);
+ wmb();
+
+ iowrite8(CAMC_CAMWR | CAMC_CAMEN, ioaddr + CamCon);
+ udelay(10);
+
+ iowrite8(0, ioaddr + CamCon);
+}
+
+/**
+ * rhine_set_vlan_cam - set CAM VLAN filters
+ * @ioaddr: register block of this Rhine
+ * @idx: VLAN CAM index [0..VCAM_SIZE-1]
+ * @addr: VLAN ID (2 bytes)
+ *
+ * Load addresses into VLAN filters.
+ */
+static void rhine_set_vlan_cam(void __iomem *ioaddr, int idx, u8 *addr)
+{
+ iowrite8(CAMC_CAMEN | CAMC_VCAMSL, ioaddr + CamCon);
+ wmb();
+
+ /* Paranoid -- idx out of range should never happen */
+ idx &= (VCAM_SIZE - 1);
+
+ iowrite8((u8) idx, ioaddr + CamAddr);
+
+ iowrite16(*((u16 *) addr), ioaddr + MulticastFilter0 + 6);
+ udelay(10);
+ wmb();
+
+ iowrite8(CAMC_CAMWR | CAMC_CAMEN, ioaddr + CamCon);
+ udelay(10);
+
+ iowrite8(0, ioaddr + CamCon);
+}
+
+/**
+ * rhine_set_cam_mask - set multicast CAM mask
+ * @ioaddr: register block of this Rhine
+ * @mask: multicast CAM mask
+ *
+ * Mask sets multicast filters active/inactive.
+ */
+static void rhine_set_cam_mask(void __iomem *ioaddr, u32 mask)
+{
+ iowrite8(CAMC_CAMEN, ioaddr + CamCon);
+ wmb();
+
+ /* write mask */
+ iowrite32(mask, ioaddr + CamMask);
+
+ /* disable CAMEN */
+ iowrite8(0, ioaddr + CamCon);
+}
+
+/**
+ * rhine_set_vlan_cam_mask - set VLAN CAM mask
+ * @ioaddr: register block of this Rhine
+ * @mask: VLAN CAM mask
+ *
+ * Mask sets VLAN filters active/inactive.
+ */
+static void rhine_set_vlan_cam_mask(void __iomem *ioaddr, u32 mask)
+{
+ iowrite8(CAMC_CAMEN | CAMC_VCAMSL, ioaddr + CamCon);
+ wmb();
+
+ /* write mask */
+ iowrite32(mask, ioaddr + CamMask);
+
+ /* disable CAMEN */
+ iowrite8(0, ioaddr + CamCon);
+}
+
+/**
+ * rhine_init_cam_filter - initialize CAM filters
+ * @dev: network device
+ *
+ * Initialize (disable) hardware VLAN and multicast support on this
+ * Rhine.
+ */
+static void rhine_init_cam_filter(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+
+ /* Disable all CAMs */
+ rhine_set_vlan_cam_mask(ioaddr, 0);
+ rhine_set_cam_mask(ioaddr, 0);
+
+ /* disable hardware VLAN support */
+ BYTE_REG_BITS_ON(TCR_PQEN, ioaddr + TxConfig);
+ BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1);
+}
+
+/**
+ * rhine_update_vcam - update VLAN CAM filters
+ * @rp: rhine_private data of this Rhine
+ *
+ * Update VLAN CAM filters to match configuration change.
+ */
+static void rhine_update_vcam(struct net_device *dev)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+ void __iomem *ioaddr = rp->base;
+ u16 vid;
+ u32 vCAMmask = 0; /* 32 vCAMs (6105M and better) */
+ unsigned int i = 0;
+
+ for_each_set_bit(vid, rp->active_vlans, VLAN_N_VID) {
+ rhine_set_vlan_cam(ioaddr, i, (u8 *)&vid);
+ vCAMmask |= 1 << i;
+ if (++i >= VCAM_SIZE)
+ break;
+ }
+ rhine_set_vlan_cam_mask(ioaddr, vCAMmask);
+}
+
+static void rhine_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ spin_lock_irq(&rp->lock);
+ set_bit(vid, rp->active_vlans);
+ rhine_update_vcam(dev);
+ spin_unlock_irq(&rp->lock);
+}
+
+static void rhine_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
+{
+ struct rhine_private *rp = netdev_priv(dev);
+
+ spin_lock_irq(&rp->lock);
+ clear_bit(vid, rp->active_vlans);
+ rhine_update_vcam(dev);
+ spin_unlock_irq(&rp->lock);
+}
+
static void init_registers(struct net_device *dev)
{
struct rhine_private *rp = netdev_priv(dev);
rhine_set_rx_mode(dev);
+ if (rp->pdev->revision >= VT6105M)
+ rhine_init_cam_filter(dev);
+
napi_enable(&rp->napi);
/* Enable interrupts by setting the interrupt mask. */
rp->tx_ring[entry].desc_length =
cpu_to_le32(TXDESC | (skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN));
+ if (unlikely(vlan_tx_tag_present(skb))) {
+ rp->tx_ring[entry].tx_status = cpu_to_le32((vlan_tx_tag_get(skb)) << 16);
+ /* request tagging */
+ rp->tx_ring[entry].desc_length |= cpu_to_le32(0x020000);
+ }
+ else
+ rp->tx_ring[entry].tx_status = 0;
+
/* lock eth irq */
spin_lock_irqsave(&rp->lock, flags);
wmb();
- rp->tx_ring[entry].tx_status = cpu_to_le32(DescOwn);
+ rp->tx_ring[entry].tx_status |= cpu_to_le32(DescOwn);
wmb();
rp->cur_tx++;
/* Non-x86 Todo: explicitly flush cache lines here. */
+ if (vlan_tx_tag_present(skb))
+ /* Tx queues are bits 7-0 (first Tx queue: bit 7) */
+ BYTE_REG_BITS_ON(1 << 7, ioaddr + TQWake);
+
/* Wake the potentially-idle transmit channel */
iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand,
ioaddr + ChipCmd1);
spin_unlock(&rp->lock);
}
+/**
+ * rhine_get_vlan_tci - extract TCI from Rx data buffer
+ * @skb: pointer to sk_buff
+ * @data_size: used data area of the buffer including CRC
+ *
+ * If hardware VLAN tag extraction is enabled and the chip indicates a 802.1Q
+ * packet, the extracted 802.1Q header (2 bytes TPID + 2 bytes TCI) is 4-byte
+ * aligned following the CRC.
+ */
+static inline u16 rhine_get_vlan_tci(struct sk_buff *skb, int data_size)
+{
+ u8 *trailer = (u8 *)skb->data + ((data_size + 3) & ~3) + 2;
+ return ntohs(*(u16 *)trailer);
+}
+
/* Process up to limit frames from receive ring */
static int rhine_rx(struct net_device *dev, int limit)
{
for (count = 0; count < limit; ++count) {
struct rx_desc *desc = rp->rx_head_desc;
u32 desc_status = le32_to_cpu(desc->rx_status);
+ u32 desc_length = le32_to_cpu(desc->desc_length);
int data_size = desc_status >> 16;
if (desc_status & DescOwn)
struct sk_buff *skb = NULL;
/* Length should omit the CRC */
int pkt_len = data_size - 4;
+ u16 vlan_tci = 0;
/* Check if the packet is long enough to accept without
copying to a minimally-sized skbuff. */
rp->rx_buf_sz,
PCI_DMA_FROMDEVICE);
}
+
+ if (unlikely(desc_length & DescTag))
+ vlan_tci = rhine_get_vlan_tci(skb, data_size);
+
skb->protocol = eth_type_trans(skb, dev);
+
+ if (unlikely(desc_length & DescTag))
+ __vlan_hwaccel_put_tag(skb, vlan_tci);
netif_receive_skb(skb);
dev->stats.rx_bytes += pkt_len;
dev->stats.rx_packets++;
iowrite8(ioread8(ioaddr + ChipCmd) | CmdTxOn,
ioaddr + ChipCmd);
+
+ if (rp->tx_ring[entry].desc_length & cpu_to_le32(0x020000))
+ /* Tx queues are bits 7-0 (first Tx queue: bit 7) */
+ BYTE_REG_BITS_ON(1 << 7, ioaddr + TQWake);
+
iowrite8(ioread8(ioaddr + ChipCmd1) | Cmd1TxDemand,
ioaddr + ChipCmd1);
IOSYNC;
}
if (intr_status & IntrTxUnderrun) {
if (rp->tx_thresh < 0xE0)
- iowrite8(rp->tx_thresh += 0x20, ioaddr + TxConfig);
+ BYTE_REG_BITS_SET((rp->tx_thresh += 0x20), 0x80, ioaddr + TxConfig);
if (debug > 1)
printk(KERN_INFO "%s: Transmitter underrun, Tx "
"threshold now %2.2x.\n",
(intr_status & (IntrTxAborted |
IntrTxUnderrun | IntrTxDescRace)) == 0) {
if (rp->tx_thresh < 0xE0) {
- iowrite8(rp->tx_thresh += 0x20, ioaddr + TxConfig);
+ BYTE_REG_BITS_SET((rp->tx_thresh += 0x20), 0x80, ioaddr + TxConfig);
}
if (debug > 1)
printk(KERN_INFO "%s: Unspecified error. Tx "
struct rhine_private *rp = netdev_priv(dev);
void __iomem *ioaddr = rp->base;
u32 mc_filter[2]; /* Multicast hash filter */
- u8 rx_mode; /* Note: 0x02=accept runt, 0x01=accept errs */
+ u8 rx_mode = 0x0C; /* Note: 0x02=accept runt, 0x01=accept errs */
+ struct netdev_hw_addr *ha;
if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
rx_mode = 0x1C;
/* Too many to match, or accept all multicasts. */
iowrite32(0xffffffff, ioaddr + MulticastFilter0);
iowrite32(0xffffffff, ioaddr + MulticastFilter1);
- rx_mode = 0x0C;
+ } else if (rp->pdev->revision >= VT6105M) {
+ int i = 0;
+ u32 mCAMmask = 0; /* 32 mCAMs (6105M and better) */
+ netdev_for_each_mc_addr(ha, dev) {
+ if (i == MCAM_SIZE)
+ break;
+ rhine_set_cam(ioaddr, i, ha->addr);
+ mCAMmask |= 1 << i;
+ i++;
+ }
+ rhine_set_cam_mask(ioaddr, mCAMmask);
} else {
- struct netdev_hw_addr *ha;
-
memset(mc_filter, 0, sizeof(mc_filter));
netdev_for_each_mc_addr(ha, dev) {
int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
}
iowrite32(mc_filter[0], ioaddr + MulticastFilter0);
iowrite32(mc_filter[1], ioaddr + MulticastFilter1);
- rx_mode = 0x0C;
}
- iowrite8(rp->rx_thresh | rx_mode, ioaddr + RxConfig);
+ /* enable/disable VLAN receive filtering */
+ if (rp->pdev->revision >= VT6105M) {
+ if (dev->flags & IFF_PROMISC)
+ BYTE_REG_BITS_OFF(BCR1_VIDFR, ioaddr + PCIBusConfig1);
+ else
+ BYTE_REG_BITS_ON(BCR1_VIDFR, ioaddr + PCIBusConfig1);
+ }
+ BYTE_REG_BITS_ON(rx_mode, ioaddr + RxConfig);
}
static void netdev_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
if (!netif_running(dev))
return 0;
- if (request_irq(dev->irq, rhine_interrupt, IRQF_SHARED, dev->name, dev))
+ if (request_irq(dev->irq, rhine_interrupt, IRQF_SHARED, dev->name, dev))
printk(KERN_ERR "via-rhine %s: request_irq failed\n", dev->name);
ret = pci_set_power_state(pdev, PCI_D0);
.get_rx_csum = vxge_get_rx_csum,
.set_rx_csum = vxge_set_rx_csum,
.get_tx_csum = ethtool_op_get_tx_csum,
- .set_tx_csum = ethtool_op_set_tx_hw_csum,
+ .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
.get_sg = ethtool_op_get_sg,
.set_sg = ethtool_op_set_sg,
.get_tso = ethtool_op_get_tso,
ndev->features |= NETIF_F_SG;
- ndev->features |= NETIF_F_HW_CSUM;
+ ndev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
"%s : checksuming enabled", __func__);
static int x25_asy_close(struct net_device *dev)
{
struct x25_asy *sl = netdev_priv(dev);
- int err;
spin_lock(&sl->lock);
if (sl->tty)
netif_stop_queue(dev);
sl->rcount = 0;
sl->xleft = 0;
- err = lapb_unregister(dev);
- if (err != LAPB_OK)
- printk(KERN_ERR "x25_asy_close: lapb_unregister error -%d\n",
- err);
spin_unlock(&sl->lock);
return 0;
}
static void x25_asy_close_tty(struct tty_struct *tty)
{
struct x25_asy *sl = tty->disc_data;
+ int err;
/* First make sure we're connected. */
if (!sl || sl->magic != X25_ASY_MAGIC)
dev_close(sl->dev);
rtnl_unlock();
+ err = lapb_unregister(sl->dev);
+ if (err != LAPB_OK)
+ printk(KERN_ERR "x25_asy_close: lapb_unregister error -%d\n",
+ err);
+
tty->disc_data = NULL;
sl->tty = NULL;
x25_asy_free(sl);
static int ar9003_hw_power_interpolate(int32_t x,
int32_t *px, int32_t *py, u_int16_t np);
+
static const struct ar9300_eeprom ar9300_default = {
.eepromVersion = 2,
.templateVersion = 2,
return 0;
}
-/**
- * xemaclite_get_stats - Get the stats for the net_device
- * @dev: Pointer to the network device
- *
- * This function returns the address of the 'net_device_stats' structure for the
- * given network device. This structure holds usage statistics for the network
- * device.
- *
- * Return: Pointer to the net_device_stats structure.
- */
-static struct net_device_stats *xemaclite_get_stats(struct net_device *dev)
-{
- return &dev->stats;
-}
-
/**
* xemaclite_send - Transmit a frame
* @orig_skb: Pointer to the socket buffer to be transmitted
.ndo_start_xmit = xemaclite_send,
.ndo_set_mac_address = xemaclite_set_mac_address,
.ndo_tx_timeout = xemaclite_tx_timeout,
- .ndo_get_stats = xemaclite_get_stats,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = xemaclite_poll_controller,
#endif
size_t hdr_size;
struct socket *sock;
- sock = rcu_dereference_check(vq->private_data,
- lockdep_is_held(&vq->mutex));
+ /* TODO: check that we are running from vhost_worker?
+ * Not sure it's worth it, it's straight-forward enough. */
+ sock = rcu_dereference_check(vq->private_data, 1);
if (!sock)
return;
DCCPF_MAX_CCID_SPECIFIC = 255,
};
+/* DCCP socket control message types for cmsg */
+enum dccp_cmsg_type {
+ DCCP_SCM_PRIORITY = 1,
+ DCCP_SCM_QPOLICY_MAX = 0xFFFF,
+ /* ^-- Up to here reserved exclusively for qpolicy parameters */
+ DCCP_SCM_MAX
+};
+
+/* DCCP priorities for outgoing/queued packets */
+enum dccp_packet_dequeueing_policy {
+ DCCPQ_POLICY_SIMPLE,
+ DCCPQ_POLICY_PRIO,
+ DCCPQ_POLICY_MAX
+};
+
/* DCCP socket options */
#define DCCP_SOCKOPT_PACKET_SIZE 1 /* XXX deprecated, without effect */
#define DCCP_SOCKOPT_SERVICE 2
#define DCCP_SOCKOPT_CCID 13
#define DCCP_SOCKOPT_TX_CCID 14
#define DCCP_SOCKOPT_RX_CCID 15
+#define DCCP_SOCKOPT_QPOLICY_ID 16
+#define DCCP_SOCKOPT_QPOLICY_TXQLEN 17
#define DCCP_SOCKOPT_CCID_RX_INFO 128
#define DCCP_SOCKOPT_CCID_TX_INFO 192
* @dccps_hc_rx_ccid - CCID used for the receiver (or receiving half-connection)
* @dccps_hc_tx_ccid - CCID used for the sender (or sending half-connection)
* @dccps_options_received - parsed set of retrieved options
+ * @dccps_qpolicy - TX dequeueing policy, one of %dccp_packet_dequeueing_policy
+ * @dccps_tx_qlen - maximum length of the TX queue
* @dccps_role - role of this sock, one of %dccp_role
* @dccps_hc_rx_insert_options - receiver wants to add options when acking
* @dccps_hc_tx_insert_options - sender wants to add options when sending
struct ccid *dccps_hc_rx_ccid;
struct ccid *dccps_hc_tx_ccid;
struct dccp_options_received dccps_options_received;
+ __u8 dccps_qpolicy;
+ __u32 dccps_tx_qlen;
enum dccp_role dccps_role:2;
__u8 dccps_hc_rx_insert_options:1;
__u8 dccps_hc_tx_insert_options:1;
#define SKF_AD_MARK 20
#define SKF_AD_QUEUE 24
#define SKF_AD_HATYPE 28
-#define SKF_AD_MAX 32
+#define SKF_AD_RXHASH 32
+#define SKF_AD_CPU 36
+#define SKF_AD_MAX 40
#define SKF_NET_OFF (-0x100000)
#define SKF_LL_OFF (-0x200000)
struct sock;
extern int sk_filter(struct sock *sk, struct sk_buff *skb);
-extern unsigned int sk_run_filter(struct sk_buff *skb,
+extern unsigned int sk_run_filter(const struct sk_buff *skb,
const struct sock_filter *filter);
extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk);
extern int sk_detach_filter(struct sock *sk);
static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev)
{
- return rcu_dereference_check(dev->ip_ptr, lockdep_rtnl_is_held());
+ return rtnl_dereference(dev->ip_ptr);
}
extern void in_dev_finish_destroy(struct in_device *idev);
/* jhash.h: Jenkins hash support.
*
- * Copyright (C) 1996 Bob Jenkins (bob_jenkins@burtleburtle.net)
+ * Copyright (C) 2006. Bob Jenkins (bob_jenkins@burtleburtle.net)
*
* http://burtleburtle.net/bob/hash/
*
* These are the credits from Bob's sources:
*
- * lookup2.c, by Bob Jenkins, December 1996, Public Domain.
- * hash(), hash2(), hash3, and mix() are externally useful functions.
- * Routines to test the hash are included if SELF_TEST is defined.
- * You can use this free for any purpose. It has no warranty.
+ * lookup3.c, by Bob Jenkins, May 2006, Public Domain.
*
- * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ * These are functions for producing 32-bit hashes for hash table lookup.
+ * hashword(), hashlittle(), hashlittle2(), hashbig(), mix(), and final()
+ * are externally useful functions. Routines to test the hash are included
+ * if SELF_TEST is defined. You can use this free for any purpose. It's in
+ * the public domain. It has no warranty.
+ *
+ * Copyright (C) 2009-2010 Jozsef Kadlecsik (kadlec@blackhole.kfki.hu)
*
* I've modified Bob's hash to be useful in the Linux kernel, and
- * any bugs present are surely my fault. -DaveM
+ * any bugs present are my fault.
+ * Jozsef
*/
+#include <linux/bitops.h>
+#include <linux/unaligned/packed_struct.h>
+
+/* Best hash sizes are of power of two */
+#define jhash_size(n) ((u32)1<<(n))
+/* Mask the hash value, i.e (value & jhash_mask(n)) instead of (value % n) */
+#define jhash_mask(n) (jhash_size(n)-1)
+
+/* __jhash_mix -- mix 3 32-bit values reversibly. */
+#define __jhash_mix(a, b, c) \
+{ \
+ a -= c; a ^= rol32(c, 4); c += b; \
+ b -= a; b ^= rol32(a, 6); a += c; \
+ c -= b; c ^= rol32(b, 8); b += a; \
+ a -= c; a ^= rol32(c, 16); c += b; \
+ b -= a; b ^= rol32(a, 19); a += c; \
+ c -= b; c ^= rol32(b, 4); b += a; \
+}
-/* NOTE: Arguments are modified. */
-#define __jhash_mix(a, b, c) \
-{ \
- a -= b; a -= c; a ^= (c>>13); \
- b -= c; b -= a; b ^= (a<<8); \
- c -= a; c -= b; c ^= (b>>13); \
- a -= b; a -= c; a ^= (c>>12); \
- b -= c; b -= a; b ^= (a<<16); \
- c -= a; c -= b; c ^= (b>>5); \
- a -= b; a -= c; a ^= (c>>3); \
- b -= c; b -= a; b ^= (a<<10); \
- c -= a; c -= b; c ^= (b>>15); \
+/* __jhash_final - final mixing of 3 32-bit values (a,b,c) into c */
+#define __jhash_final(a, b, c) \
+{ \
+ c ^= b; c -= rol32(b, 14); \
+ a ^= c; a -= rol32(c, 11); \
+ b ^= a; b -= rol32(a, 25); \
+ c ^= b; c -= rol32(b, 16); \
+ a ^= c; a -= rol32(c, 4); \
+ b ^= a; b -= rol32(a, 14); \
+ c ^= b; c -= rol32(b, 24); \
}
-/* The golden ration: an arbitrary value */
-#define JHASH_GOLDEN_RATIO 0x9e3779b9
+/* An arbitrary initial parameter */
+#define JHASH_INITVAL 0xdeadbeef
-/* The most generic version, hashes an arbitrary sequence
- * of bytes. No alignment or length assumptions are made about
- * the input key.
+/* jhash - hash an arbitrary key
+ * @k: sequence of bytes as key
+ * @length: the length of the key
+ * @initval: the previous hash, or an arbitray value
+ *
+ * The generic version, hashes an arbitrary sequence of bytes.
+ * No alignment or length assumptions are made about the input key.
+ *
+ * Returns the hash value of the key. The result depends on endianness.
*/
static inline u32 jhash(const void *key, u32 length, u32 initval)
{
- u32 a, b, c, len;
+ u32 a, b, c;
const u8 *k = key;
- len = length;
- a = b = JHASH_GOLDEN_RATIO;
- c = initval;
-
- while (len >= 12) {
- a += (k[0] +((u32)k[1]<<8) +((u32)k[2]<<16) +((u32)k[3]<<24));
- b += (k[4] +((u32)k[5]<<8) +((u32)k[6]<<16) +((u32)k[7]<<24));
- c += (k[8] +((u32)k[9]<<8) +((u32)k[10]<<16)+((u32)k[11]<<24));
-
- __jhash_mix(a,b,c);
+ /* Set up the internal state */
+ a = b = c = JHASH_INITVAL + length + initval;
+ /* All but the last block: affect some 32 bits of (a,b,c) */
+ while (length > 12) {
+ a += __get_unaligned_cpu32(k);
+ b += __get_unaligned_cpu32(k + 4);
+ c += __get_unaligned_cpu32(k + 8);
+ __jhash_mix(a, b, c);
+ length -= 12;
k += 12;
- len -= 12;
}
-
- c += length;
- switch (len) {
- case 11: c += ((u32)k[10]<<24);
- case 10: c += ((u32)k[9]<<16);
- case 9 : c += ((u32)k[8]<<8);
- case 8 : b += ((u32)k[7]<<24);
- case 7 : b += ((u32)k[6]<<16);
- case 6 : b += ((u32)k[5]<<8);
- case 5 : b += k[4];
- case 4 : a += ((u32)k[3]<<24);
- case 3 : a += ((u32)k[2]<<16);
- case 2 : a += ((u32)k[1]<<8);
- case 1 : a += k[0];
- };
-
- __jhash_mix(a,b,c);
+ /* Last block: affect all 32 bits of (c) */
+ /* All the case statements fall through */
+ switch (length) {
+ case 12: c += (u32)k[11]<<24;
+ case 11: c += (u32)k[10]<<16;
+ case 10: c += (u32)k[9]<<8;
+ case 9: c += k[8];
+ case 8: b += (u32)k[7]<<24;
+ case 7: b += (u32)k[6]<<16;
+ case 6: b += (u32)k[5]<<8;
+ case 5: b += k[4];
+ case 4: a += (u32)k[3]<<24;
+ case 3: a += (u32)k[2]<<16;
+ case 2: a += (u32)k[1]<<8;
+ case 1: a += k[0];
+ __jhash_final(a, b, c);
+ case 0: /* Nothing left to add */
+ break;
+ }
return c;
}
-/* A special optimized version that handles 1 or more of u32s.
- * The length parameter here is the number of u32s in the key.
+/* jhash2 - hash an array of u32's
+ * @k: the key which must be an array of u32's
+ * @length: the number of u32's in the key
+ * @initval: the previous hash, or an arbitray value
+ *
+ * Returns the hash value of the key.
*/
static inline u32 jhash2(const u32 *k, u32 length, u32 initval)
{
- u32 a, b, c, len;
+ u32 a, b, c;
- a = b = JHASH_GOLDEN_RATIO;
- c = initval;
- len = length;
+ /* Set up the internal state */
+ a = b = c = JHASH_INITVAL + (length<<2) + initval;
- while (len >= 3) {
+ /* Handle most of the key */
+ while (length > 3) {
a += k[0];
b += k[1];
c += k[2];
__jhash_mix(a, b, c);
- k += 3; len -= 3;
+ length -= 3;
+ k += 3;
}
- c += length * 4;
-
- switch (len) {
- case 2 : b += k[1];
- case 1 : a += k[0];
- };
-
- __jhash_mix(a,b,c);
+ /* Handle the last 3 u32's: all the case statements fall through */
+ switch (length) {
+ case 3: c += k[2];
+ case 2: b += k[1];
+ case 1: a += k[0];
+ __jhash_final(a, b, c);
+ case 0: /* Nothing left to add */
+ break;
+ }
return c;
}
-/* A special ultra-optimized versions that knows they are hashing exactly
- * 3, 2 or 1 word(s).
- *
- * NOTE: In particular the "c += length; __jhash_mix(a,b,c);" normally
- * done at the end is not done here.
- */
+/* jhash_3words - hash exactly 3, 2 or 1 word(s) */
static inline u32 jhash_3words(u32 a, u32 b, u32 c, u32 initval)
{
- a += JHASH_GOLDEN_RATIO;
- b += JHASH_GOLDEN_RATIO;
+ a += JHASH_INITVAL;
+ b += JHASH_INITVAL;
c += initval;
- __jhash_mix(a, b, c);
+ __jhash_final(a, b, c);
return c;
}
#define MARVELL_PHY_ID_88E1118 0x01410e10
#define MARVELL_PHY_ID_88E1121R 0x01410cb0
#define MARVELL_PHY_ID_88E1145 0x01410cd0
+#define MARVELL_PHY_ID_88E1149R 0x01410e50
#define MARVELL_PHY_ID_88E1240 0x01410e30
#define MARVELL_PHY_ID_88E1318S 0x01410e90
extern int netdev_boot_setup_check(struct net_device *dev);
extern unsigned long netdev_boot_base(const char *prefix, int unit);
-extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
+extern struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type,
+ const char *hwaddr);
extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type);
extern void dev_add_pack(struct packet_type *pt);
LINUX_MIB_TCPMINTTLDROP, /* RFC 5082 */
LINUX_MIB_TCPDEFERACCEPTDROP,
LINUX_MIB_IPRPFILTER, /* IP Reverse Path Filter (rp_filter) */
+ LINUX_MIB_TCPTIMEWAITOVERFLOW, /* TCPTimeWaitOverflow */
__LINUX_MIB_MAX
};
#define FLAG_LINK_INTR 0x0800 /* updates link (carrier) status */
+/*
+ * Indicates to usbnet, that USB driver accumulates multiple IP packets.
+ * Affects statistic (counters) and short packet handling.
+ */
+#define FLAG_MULTI_PACKET 0x1000
+
/* init device ... can sleep, or cause probe() failure */
int (*bind)(struct usbnet *, struct usb_interface *);
extern void unix_notinflight(struct file *fp);
extern void unix_gc(void);
extern void wait_for_unix_gc(void);
+extern struct sock *unix_get_socket(struct file *filp);
#define UNIX_HASH_SIZE 256
spinlock_t lock;
unsigned int gc_candidate : 1;
unsigned int gc_maybe_cycle : 1;
+ unsigned char recursion_level;
struct socket_wq peer_wq;
};
#define unix_sk(__sk) ((struct unix_sock *)__sk)
struct dst_ops *ops;
- u32 metrics[RTAX_MAX];
+ u32 _metrics[RTAX_MAX];
#ifdef CONFIG_NET_CLS_ROUTE
__u32 tclassid;
static inline u32
dst_metric(const struct dst_entry *dst, int metric)
{
- return dst->metrics[metric-1];
+ return dst->_metrics[metric-1];
+}
+
+static inline void dst_metric_set(struct dst_entry *dst, int metric, u32 val)
+{
+ dst->_metrics[metric-1] = val;
+}
+
+static inline void dst_import_metrics(struct dst_entry *dst, const u32 *src_metrics)
+{
+ memcpy(dst->_metrics, src_metrics, RTAX_MAX * sizeof(u32));
+}
+
+static inline void dst_copy_metrics(struct dst_entry *dest, const struct dst_entry *src)
+{
+ dst_import_metrics(dest, src->_metrics);
+}
+
+static inline u32 *dst_metrics_ptr(struct dst_entry *dst)
+{
+ return dst->_metrics;
}
static inline u32
static inline void set_dst_metric_rtt(struct dst_entry *dst, int metric,
unsigned long rtt)
{
- dst->metrics[metric-1] = jiffies_to_msecs(rtt);
+ dst_metric_set(dst, metric, jiffies_to_msecs(rtt));
}
static inline u32
struct ipv6_pinfo *pinet6;
#endif
/* Socket demultiplex comparisons on incoming packets. */
- __be32 inet_daddr;
- __be32 inet_rcv_saddr;
+#define inet_daddr sk.__sk_common.skc_daddr
+#define inet_rcv_saddr sk.__sk_common.skc_rcv_saddr
+
__be16 inet_dport;
__u16 inet_num;
__be32 inet_saddr;
extern void inet_twdr_twkill_work(struct work_struct *work);
extern void inet_twdr_twcal_tick(unsigned long data);
-#if (BITS_PER_LONG == 64)
-#define INET_TIMEWAIT_ADDRCMP_ALIGN_BYTES 8
-#else
-#define INET_TIMEWAIT_ADDRCMP_ALIGN_BYTES 4
-#endif
-
struct inet_bind_bucket;
/*
#define tw_hash __tw_common.skc_hash
#define tw_prot __tw_common.skc_prot
#define tw_net __tw_common.skc_net
+#define tw_daddr __tw_common.skc_daddr
+#define tw_rcv_saddr __tw_common.skc_rcv_saddr
int tw_timeout;
volatile unsigned char tw_substate;
- /* 3 bits hole, try to pack */
unsigned char tw_rcv_wscale;
+
/* Socket demultiplex comparisons on incoming packets. */
- /* these five are in inet_sock */
+ /* these three are in inet_sock */
__be16 tw_sport;
- __be32 tw_daddr __attribute__((aligned(INET_TIMEWAIT_ADDRCMP_ALIGN_BYTES)));
- __be32 tw_rcv_saddr;
__be16 tw_dport;
__u16 tw_num;
kmemcheck_bitfield_begin(flags);
return (struct inet_timewait_sock *)sk;
}
-static inline __be32 inet_rcv_saddr(const struct sock *sk)
+static inline __be32 sk_rcv_saddr(const struct sock *sk)
{
- return likely(sk->sk_state != TCP_TIME_WAIT) ?
- inet_sk(sk)->inet_rcv_saddr : inet_twsk(sk)->tw_rcv_saddr;
+/* both inet_sk() and inet_twsk() store rcv_saddr in skc_rcv_saddr */
+ return sk->__sk_common.skc_rcv_saddr;
}
extern void inet_twsk_put(struct inet_timewait_sock *tw);
/**
* struct sock_common - minimal network layer representation of sockets
- * @skc_node: main hash linkage for various protocol lookup tables
- * @skc_nulls_node: main hash linkage for TCP/UDP/UDP-Lite protocol
- * @skc_refcnt: reference count
- * @skc_tx_queue_mapping: tx queue number for this connection
+ * @skc_daddr: Foreign IPv4 addr
+ * @skc_rcv_saddr: Bound local IPv4 addr
* @skc_hash: hash value used with various protocol lookup tables
* @skc_u16hashes: two u16 hash values used by UDP lookup tables
* @skc_family: network address family
* @skc_portaddr_node: second hash linkage for UDP/UDP-Lite protocol
* @skc_prot: protocol handlers inside a network family
* @skc_net: reference to the network namespace of this socket
+ * @skc_node: main hash linkage for various protocol lookup tables
+ * @skc_nulls_node: main hash linkage for TCP/UDP/UDP-Lite protocol
+ * @skc_tx_queue_mapping: tx queue number for this connection
+ * @skc_refcnt: reference count
*
* This is the minimal network layer representation of sockets, the header
* for struct sock and struct inet_timewait_sock.
*/
struct sock_common {
- /*
- * first fields are not copied in sock_copy()
+ /* skc_daddr and skc_rcv_saddr must be grouped :
+ * cf INET_MATCH() and INET_TW_MATCH()
*/
- union {
- struct hlist_node skc_node;
- struct hlist_nulls_node skc_nulls_node;
- };
- atomic_t skc_refcnt;
- int skc_tx_queue_mapping;
+ __be32 skc_daddr;
+ __be32 skc_rcv_saddr;
union {
unsigned int skc_hash;
#ifdef CONFIG_NET_NS
struct net *skc_net;
#endif
+ /*
+ * fields between dontcopy_begin/dontcopy_end
+ * are not copied in sock_copy()
+ */
+ int skc_dontcopy_begin[0];
+ union {
+ struct hlist_node skc_node;
+ struct hlist_nulls_node skc_nulls_node;
+ };
+ int skc_tx_queue_mapping;
+ atomic_t skc_refcnt;
+ int skc_dontcopy_end[0];
};
/**
#define sk_refcnt __sk_common.skc_refcnt
#define sk_tx_queue_mapping __sk_common.skc_tx_queue_mapping
-#define sk_copy_start __sk_common.skc_hash
+#define sk_dontcopy_begin __sk_common.skc_dontcopy_begin
+#define sk_dontcopy_end __sk_common.skc_dontcopy_end
#define sk_hash __sk_common.skc_hash
#define sk_family __sk_common.skc_family
#define sk_state __sk_common.skc_state
/* Initialise core socket variables */
extern void sock_init_data(struct socket *sock, struct sock *sk);
+extern void sk_filter_release_rcu(struct rcu_head *rcu);
+
/**
* sk_filter_release - release a socket filter
* @fp: filter to remove
static inline void sk_filter_release(struct sk_filter *fp)
{
if (atomic_dec_and_test(&fp->refcnt))
- kfree(fp);
+ call_rcu_bh(&fp->rcu, sk_filter_release_rcu);
}
static inline void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp)
#include <linux/module.h>
#include <linux/errno.h>
+#include <linux/kernel.h>
#include <linux/uaccess.h>
#include <linux/slab.h>
#include <linux/sched.h>
+#include <linux/stddef.h>
#include <linux/types.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include "protocol.h"
-#ifndef MIN
-#define MIN(a, b) (((a) < (b)) ? (a) : (b))
-#endif
-
-#ifndef MAX
-#define MAX(a, b) (((a) > (b)) ? (a) : (b))
-#endif
-
-#ifndef offset_of
-#define offset_of(type, memb) \
- ((unsigned long)(&((type *)0)->memb))
-#endif
-#ifndef container_of
-#define container_of(obj, type, memb) \
- ((type *)(((char *)obj) - offset_of(type, memb)))
-#endif
-
static int
p9pdu_writef(struct p9_fcall *pdu, int proto_version, const char *fmt, ...);
static size_t pdu_read(struct p9_fcall *pdu, void *data, size_t size)
{
- size_t len = MIN(pdu->size - pdu->offset, size);
+ size_t len = min(pdu->size - pdu->offset, size);
memcpy(data, &pdu->sdata[pdu->offset], len);
pdu->offset += len;
return size - len;
static size_t pdu_write(struct p9_fcall *pdu, const void *data, size_t size)
{
- size_t len = MIN(pdu->capacity - pdu->size, size);
+ size_t len = min(pdu->capacity - pdu->size, size);
memcpy(&pdu->sdata[pdu->size], data, len);
pdu->size += len;
return size - len;
static size_t
pdu_write_u(struct p9_fcall *pdu, const char __user *udata, size_t size)
{
- size_t len = MIN(pdu->capacity - pdu->size, size);
+ size_t len = min(pdu->capacity - pdu->size, size);
if (copy_from_user(&pdu->sdata[pdu->size], udata, len))
len = 0;
if (errcode)
break;
- size = MAX(len, 0);
+ size = max_t(int16_t, len, 0);
*sptr = kmalloc(size + 1, GFP_KERNEL);
if (*sptr == NULL) {
p9pdu_readf(pdu, proto_version, "d", count);
if (!errcode) {
*count =
- MIN(*count,
- pdu->size - pdu->offset);
+ min_t(int32_t, *count,
+ pdu->size - pdu->offset);
*data = &pdu->sdata[pdu->offset];
}
}
const char *sptr = va_arg(ap, const char *);
int16_t len = 0;
if (sptr)
- len = MIN(strlen(sptr), USHRT_MAX);
+ len = min_t(int16_t, strlen(sptr), USHRT_MAX);
errcode = p9pdu_writef(pdu, proto_version,
"w", len);
#ifdef CONFIG_BRIDGE_NETFILTER
/* remember the MTU in the rtable for PMTU */
- br->fake_rtable.dst.metrics[RTAX_MTU - 1] = new_mtu;
+ dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu);
#endif
return 0;
atomic_set(&rt->dst.__refcnt, 1);
rt->dst.dev = br->dev;
rt->dst.path = &rt->dst;
- rt->dst.metrics[RTAX_MTU - 1] = 1500;
+ dst_metric_set(&rt->dst, RTAX_MTU, 1500);
rt->dst.flags = DST_NOXFRM;
rt->dst.ops = &fake_dst_ops;
}
#
# Makefile for CEPH filesystem.
#
-
-ifneq ($(KERNELRELEASE),)
-
obj-$(CONFIG_CEPH_LIB) += libceph.o
libceph-y := ceph_common.o messenger.o msgpool.o buffer.o pagelist.o \
ceph_fs.o ceph_strings.o ceph_hash.o \
pagevec.o
-else
-#Otherwise we were called directly from the command
-# line; invoke the kernel build system.
-
-KERNELDIR ?= /lib/modules/$(shell uname -r)/build
-PWD := $(shell pwd)
-
-default: all
-
-all:
- $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_CEPH_LIB=m modules
-
-modules_install:
- $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_CEPH_LIB=m modules_install
-
-clean:
- $(MAKE) -C $(KERNELDIR) M=$(PWD) clean
-
-endif
if (b->vec.iov_base) {
b->is_vmalloc = false;
} else {
- b->vec.iov_base = __vmalloc(len, gfp, PAGE_KERNEL);
+ b->vec.iov_base = __vmalloc(len, gfp | __GFP_HIGHMEM, PAGE_KERNEL);
if (!b->vec.iov_base) {
kfree(b);
return NULL;
* interrupt level will suddenly eat the receive_queue.
*
* Look at current nfs client by the way...
- * However, this function was corrent in any case. 8)
+ * However, this function was correct in any case. 8)
*/
unsigned long cpu_flags;
EXPORT_SYMBOL(dev_get_by_index);
/**
- * dev_getbyhwaddr - find a device by its hardware address
+ * dev_getbyhwaddr_rcu - find a device by its hardware address
* @net: the applicable net namespace
* @type: media type of device
* @ha: hardware address
*
* Search for an interface by MAC address. Returns NULL if the device
- * is not found or a pointer to the device. The caller must hold the
- * rtnl semaphore. The returned device has not had its ref count increased
+ * is not found or a pointer to the device. The caller must hold RCU
+ * The returned device has not had its ref count increased
* and the caller must therefore be careful about locking
*
- * BUGS:
- * If the API was consistent this would be __dev_get_by_hwaddr
*/
-struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *ha)
+struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type,
+ const char *ha)
{
struct net_device *dev;
- ASSERT_RTNL();
-
- for_each_netdev(net, dev)
+ for_each_netdev_rcu(net, dev)
if (dev->type == type &&
!memcmp(dev->dev_addr, ha, dev->addr_len))
return dev;
return NULL;
}
-EXPORT_SYMBOL(dev_getbyhwaddr);
+EXPORT_SYMBOL(dev_getbyhwaddr_rcu);
struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type)
{
int rc = NETDEV_TX_OK;
if (likely(!skb->next)) {
- if (!list_empty(&ptype_all))
- dev_queue_xmit_nit(skb, dev);
-
/*
* If device doesnt need skb->dst, release it right now while
* its hot in this cpu cache
if (dev->priv_flags & IFF_XMIT_DST_RELEASE)
skb_dst_drop(skb);
+ if (!list_empty(&ptype_all))
+ dev_queue_xmit_nit(skb, dev);
+
skb_orphan_try(skb);
if (vlan_tx_tag_present(skb) &&
}
if (features & NETIF_F_UFO) {
- if (!(features & NETIF_F_GEN_CSUM)) {
+ /* maybe split UFO into V4 and V6? */
+ if (!((features & NETIF_F_GEN_CSUM) ||
+ (features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+ == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) {
if (name)
printk(KERN_ERR "%s: Dropping NETIF_F_UFO "
- "since no NETIF_F_HW_CSUM feature.\n",
+ "since no checksum offload features.\n",
name);
features &= ~NETIF_F_UFO;
}
}
#endif
+static void netdev_init_one_queue(struct net_device *dev,
+ struct netdev_queue *queue, void *_unused)
+{
+ /* Initialize queue lock */
+ spin_lock_init(&queue->_xmit_lock);
+ netdev_set_xmit_lockdep_class(&queue->_xmit_lock, dev->type);
+ queue->xmit_lock_owner = -1;
+ netdev_queue_numa_node_write(queue, -1);
+ queue->dev = dev;
+}
+
static int netif_alloc_netdev_queues(struct net_device *dev)
{
unsigned int count = dev->num_tx_queues;
struct netdev_queue *tx;
- int i;
BUG_ON(count < 1);
}
dev->_tx = tx;
- for (i = 0; i < count; i++) {
- netdev_queue_numa_node_write(&tx[i], -1);
- tx[i].dev = dev;
- }
- return 0;
-}
-
-static void netdev_init_one_queue(struct net_device *dev,
- struct netdev_queue *queue,
- void *_unused)
-{
- /* Initialize queue lock */
- spin_lock_init(&queue->_xmit_lock);
- netdev_set_xmit_lockdep_class(&queue->_xmit_lock, dev->type);
- queue->xmit_lock_owner = -1;
-}
-
-static void netdev_init_queues(struct net_device *dev)
-{
netdev_for_each_tx_queue(dev, netdev_init_one_queue, NULL);
spin_lock_init(&dev->tx_global_lock);
+
+ return 0;
}
/**
dev->iflink = -1;
- netdev_init_queues(dev);
-
/* Init, if this function is available */
if (dev->netdev_ops->ndo_init) {
ret = dev->netdev_ops->ndo_init(dev);
return -EFAULT;
if (edata.data && !(dev->features & NETIF_F_SG))
return -EINVAL;
- if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
+ if (edata.data && !((dev->features & NETIF_F_GEN_CSUM) ||
+ (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
+ == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
return -EINVAL;
return dev->ethtool_ops->set_ufo(dev, edata.data);
}
};
/* No hurry in this branch */
-static void *__load_pointer(struct sk_buff *skb, int k)
+static void *__load_pointer(const struct sk_buff *skb, int k, unsigned int size)
{
u8 *ptr = NULL;
else if (k >= SKF_LL_OFF)
ptr = skb_mac_header(skb) + k - SKF_LL_OFF;
- if (ptr >= skb->head && ptr < skb_tail_pointer(skb))
+ if (ptr >= skb->head && ptr + size <= skb_tail_pointer(skb))
return ptr;
return NULL;
}
-static inline void *load_pointer(struct sk_buff *skb, int k,
+static inline void *load_pointer(const struct sk_buff *skb, int k,
unsigned int size, void *buffer)
{
if (k >= 0)
else {
if (k >= SKF_AD_OFF)
return NULL;
- return __load_pointer(skb, k);
+ return __load_pointer(skb, k, size);
}
}
* and last instruction guaranteed to be a RET, we dont need to check
* flen. (We used to pass to this function the length of filter)
*/
-unsigned int sk_run_filter(struct sk_buff *skb, const struct sock_filter *fentry)
+unsigned int sk_run_filter(const struct sk_buff *skb,
+ const struct sock_filter *fentry)
{
void *ptr;
u32 A = 0; /* Accumulator */
u32 X = 0; /* Index Register */
u32 mem[BPF_MEMWORDS]; /* Scratch Memory Store */
- unsigned long memvalid = 0;
u32 tmp;
int k;
- BUILD_BUG_ON(BPF_MEMWORDS > BITS_PER_LONG);
/*
* Process array of filter instructions.
*/
X = K;
continue;
case BPF_S_LD_MEM:
- A = (memvalid & (1UL << K)) ?
- mem[K] : 0;
+ A = mem[K];
continue;
case BPF_S_LDX_MEM:
- X = (memvalid & (1UL << K)) ?
- mem[K] : 0;
+ X = mem[K];
continue;
case BPF_S_MISC_TAX:
X = A;
case BPF_S_RET_A:
return A;
case BPF_S_ST:
- memvalid |= 1UL << K;
mem[K] = A;
continue;
case BPF_S_STX:
- memvalid |= 1UL << K;
mem[K] = X;
continue;
default:
return 0;
A = skb->dev->type;
continue;
+ case SKF_AD_RXHASH:
+ A = skb->rxhash;
+ continue;
+ case SKF_AD_CPU:
+ A = raw_smp_processor_id();
+ continue;
case SKF_AD_NLATTR: {
struct nlattr *nla;
}
EXPORT_SYMBOL(sk_run_filter);
+/*
+ * Security :
+ * A BPF program is able to use 16 cells of memory to store intermediate
+ * values (check u32 mem[BPF_MEMWORDS] in sk_run_filter())
+ * As we dont want to clear mem[] array for each packet going through
+ * sk_run_filter(), we check that filter loaded by user never try to read
+ * a cell if not previously written, and we check all branches to be sure
+ * a malicious user doesnt try to abuse us.
+ */
+static int check_load_and_stores(struct sock_filter *filter, int flen)
+{
+ u16 *masks, memvalid = 0; /* one bit per cell, 16 cells */
+ int pc, ret = 0;
+
+ BUILD_BUG_ON(BPF_MEMWORDS > 16);
+ masks = kmalloc(flen * sizeof(*masks), GFP_KERNEL);
+ if (!masks)
+ return -ENOMEM;
+ memset(masks, 0xff, flen * sizeof(*masks));
+
+ for (pc = 0; pc < flen; pc++) {
+ memvalid &= masks[pc];
+
+ switch (filter[pc].code) {
+ case BPF_S_ST:
+ case BPF_S_STX:
+ memvalid |= (1 << filter[pc].k);
+ break;
+ case BPF_S_LD_MEM:
+ case BPF_S_LDX_MEM:
+ if (!(memvalid & (1 << filter[pc].k))) {
+ ret = -EINVAL;
+ goto error;
+ }
+ break;
+ case BPF_S_JMP_JA:
+ /* a jump must set masks on target */
+ masks[pc + 1 + filter[pc].k] &= memvalid;
+ memvalid = ~0;
+ break;
+ case BPF_S_JMP_JEQ_K:
+ case BPF_S_JMP_JEQ_X:
+ case BPF_S_JMP_JGE_K:
+ case BPF_S_JMP_JGE_X:
+ case BPF_S_JMP_JGT_K:
+ case BPF_S_JMP_JGT_X:
+ case BPF_S_JMP_JSET_X:
+ case BPF_S_JMP_JSET_K:
+ /* a jump must set masks on targets */
+ masks[pc + 1 + filter[pc].jt] &= memvalid;
+ masks[pc + 1 + filter[pc].jf] &= memvalid;
+ memvalid = ~0;
+ break;
+ }
+ }
+error:
+ kfree(masks);
+ return ret;
+}
+
/**
* sk_chk_filter - verify socket filter code
* @filter: filter to verify
switch (filter[flen - 1].code) {
case BPF_S_RET_K:
case BPF_S_RET_A:
- return 0;
+ return check_load_and_stores(filter, flen);
}
return -EINVAL;
}
EXPORT_SYMBOL(sk_chk_filter);
/**
- * sk_filter_rcu_release - Release a socket filter by rcu_head
+ * sk_filter_release_rcu - Release a socket filter by rcu_head
* @rcu: rcu_head that contains the sk_filter to free
*/
-static void sk_filter_rcu_release(struct rcu_head *rcu)
+void sk_filter_release_rcu(struct rcu_head *rcu)
{
struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu);
- sk_filter_release(fp);
-}
-
-static void sk_filter_delayed_uncharge(struct sock *sk, struct sk_filter *fp)
-{
- unsigned int size = sk_filter_len(fp);
-
- atomic_sub(size, &sk->sk_omem_alloc);
- call_rcu_bh(&fp->rcu, sk_filter_rcu_release);
+ kfree(fp);
}
+EXPORT_SYMBOL(sk_filter_release_rcu);
/**
* sk_attach_filter - attach a socket filter
rcu_assign_pointer(sk->sk_filter, fp);
if (old_fp)
- sk_filter_delayed_uncharge(sk, old_fp);
+ sk_filter_uncharge(sk, old_fp);
return 0;
}
EXPORT_SYMBOL_GPL(sk_attach_filter);
sock_owned_by_user(sk));
if (filter) {
rcu_assign_pointer(sk->sk_filter, NULL);
- sk_filter_delayed_uncharge(sk, filter);
+ sk_filter_uncharge(sk, filter);
ret = 0;
}
return ret;
nr_table_entries = roundup_pow_of_two(nr_table_entries + 1);
lopt_size += nr_table_entries * sizeof(struct request_sock *);
if (lopt_size > PAGE_SIZE)
- lopt = __vmalloc(lopt_size,
- GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO,
- PAGE_KERNEL);
+ lopt = vzalloc(lopt_size);
else
lopt = kzalloc(lopt_size, GFP_KERNEL);
if (lopt == NULL)
/*
* Copy all fields from osk to nsk but nsk->sk_refcnt must not change yet,
* even temporarly, because of RCU lookups. sk_node should also be left as is.
+ * We must not copy fields between sk_dontcopy_begin and sk_dontcopy_end
*/
static void sock_copy(struct sock *nsk, const struct sock *osk)
{
#ifdef CONFIG_SECURITY_NETWORK
void *sptr = nsk->sk_security;
#endif
- BUILD_BUG_ON(offsetof(struct sock, sk_copy_start) !=
- sizeof(osk->sk_node) + sizeof(osk->sk_refcnt) +
- sizeof(osk->sk_tx_queue_mapping));
- memcpy(&nsk->sk_copy_start, &osk->sk_copy_start,
- osk->sk_prot->obj_size - offsetof(struct sock, sk_copy_start));
+ memcpy(nsk, osk, offsetof(struct sock, sk_dontcopy_begin));
+
+ memcpy(&nsk->sk_dontcopy_end, &osk->sk_dontcopy_end,
+ osk->sk_prot->obj_size - offsetof(struct sock, sk_dontcopy_end));
+
#ifdef CONFIG_SECURITY_NETWORK
nsk->sk_security = sptr;
security_sk_clone(osk, nsk);
PTP_FILTER
};
-static unsigned int classify(struct sk_buff *skb)
+static unsigned int classify(const struct sk_buff *skb)
{
if (likely(skb->dev &&
skb->dev->phydev &&
obj-$(CONFIG_IP_DCCP) += dccp.o dccp_ipv4.o
-dccp-y := ccid.o feat.o input.o minisocks.o options.o output.o proto.o timer.o
-
+dccp-y := ccid.o feat.o input.o minisocks.o options.o output.o proto.o timer.o \
+ qpolicy.o
#
# CCID algorithms to be used by dccp.ko
#
extern void dccp_send_sync(struct sock *sk, const u64 seq,
const enum dccp_pkt_type pkt_type);
+/*
+ * TX Packet Dequeueing Interface
+ */
+extern void dccp_qpolicy_push(struct sock *sk, struct sk_buff *skb);
+extern bool dccp_qpolicy_full(struct sock *sk);
+extern void dccp_qpolicy_drop(struct sock *sk, struct sk_buff *skb);
+extern struct sk_buff *dccp_qpolicy_top(struct sock *sk);
+extern struct sk_buff *dccp_qpolicy_pop(struct sock *sk);
+extern bool dccp_qpolicy_param_ok(struct sock *sk, __be32 param);
+
+/*
+ * TX Packet Output and TX Timers
+ */
extern void dccp_write_xmit(struct sock *sk);
extern void dccp_write_space(struct sock *sk);
extern void dccp_flush_write_queue(struct sock *sk, long *time_budget);
dccp_update_gsr(sk, seqno);
if (dh->dccph_type != DCCP_PKT_SYNC &&
- (ackno != DCCP_PKT_WITHOUT_ACK_SEQ))
+ ackno != DCCP_PKT_WITHOUT_ACK_SEQ &&
+ after48(ackno, dp->dccps_gar))
dp->dccps_gar = ackno;
} else {
unsigned long now = jiffies;
{
int err, len;
struct dccp_sock *dp = dccp_sk(sk);
- struct sk_buff *skb = skb_dequeue(&sk->sk_write_queue);
+ struct sk_buff *skb = dccp_qpolicy_pop(sk);
if (unlikely(skb == NULL))
return;
struct dccp_sock *dp = dccp_sk(sk);
struct sk_buff *skb;
- while ((skb = skb_peek(&sk->sk_write_queue))) {
+ while ((skb = dccp_qpolicy_top(sk))) {
int rc = ccid_hc_tx_send_packet(dp->dccps_hc_tx_ccid, sk, skb);
switch (ccid_packet_dequeue_eval(rc)) {
dccp_xmit_packet(sk);
break;
case CCID_PACKET_ERR:
- skb_dequeue(&sk->sk_write_queue);
- kfree_skb(skb);
+ dccp_qpolicy_drop(sk, skb);
dccp_pr_debug("packet discarded due to err=%d\n", rc);
}
}
dp->dccps_role = DCCP_ROLE_UNDEFINED;
dp->dccps_service = DCCP_SERVICE_CODE_IS_ABSENT;
dp->dccps_l_ack_ratio = dp->dccps_r_ack_ratio = 1;
+ dp->dccps_tx_qlen = sysctl_dccp_tx_qlen;
dccp_init_xmit_timers(sk);
case DCCP_SOCKOPT_RECV_CSCOV:
err = dccp_setsockopt_cscov(sk, val, true);
break;
+ case DCCP_SOCKOPT_QPOLICY_ID:
+ if (sk->sk_state != DCCP_CLOSED)
+ err = -EISCONN;
+ else if (val < 0 || val >= DCCPQ_POLICY_MAX)
+ err = -EINVAL;
+ else
+ dp->dccps_qpolicy = val;
+ break;
+ case DCCP_SOCKOPT_QPOLICY_TXQLEN:
+ if (val < 0)
+ err = -EINVAL;
+ else
+ dp->dccps_tx_qlen = val;
+ break;
default:
err = -ENOPROTOOPT;
break;
case DCCP_SOCKOPT_RECV_CSCOV:
val = dp->dccps_pcrlen;
break;
+ case DCCP_SOCKOPT_QPOLICY_ID:
+ val = dp->dccps_qpolicy;
+ break;
+ case DCCP_SOCKOPT_QPOLICY_TXQLEN:
+ val = dp->dccps_tx_qlen;
+ break;
case 128 ... 191:
return ccid_hc_rx_getsockopt(dp->dccps_hc_rx_ccid, sk, optname,
len, (u32 __user *)optval, optlen);
EXPORT_SYMBOL_GPL(compat_dccp_getsockopt);
#endif
+static int dccp_msghdr_parse(struct msghdr *msg, struct sk_buff *skb)
+{
+ struct cmsghdr *cmsg = CMSG_FIRSTHDR(msg);
+
+ /*
+ * Assign an (opaque) qpolicy priority value to skb->priority.
+ *
+ * We are overloading this skb field for use with the qpolicy subystem.
+ * The skb->priority is normally used for the SO_PRIORITY option, which
+ * is initialised from sk_priority. Since the assignment of sk_priority
+ * to skb->priority happens later (on layer 3), we overload this field
+ * for use with queueing priorities as long as the skb is on layer 4.
+ * The default priority value (if nothing is set) is 0.
+ */
+ skb->priority = 0;
+
+ for (; cmsg != NULL; cmsg = CMSG_NXTHDR(msg, cmsg)) {
+
+ if (!CMSG_OK(msg, cmsg))
+ return -EINVAL;
+
+ if (cmsg->cmsg_level != SOL_DCCP)
+ continue;
+
+ if (cmsg->cmsg_type <= DCCP_SCM_QPOLICY_MAX &&
+ !dccp_qpolicy_param_ok(skb->sk, cmsg->cmsg_type))
+ return -EINVAL;
+
+ switch (cmsg->cmsg_type) {
+ case DCCP_SCM_PRIORITY:
+ if (cmsg->cmsg_len != CMSG_LEN(sizeof(__u32)))
+ return -EINVAL;
+ skb->priority = *(__u32 *)CMSG_DATA(cmsg);
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
int dccp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
size_t len)
{
lock_sock(sk);
- if (sysctl_dccp_tx_qlen &&
- (sk->sk_write_queue.qlen >= sysctl_dccp_tx_qlen)) {
+ if (dccp_qpolicy_full(sk)) {
rc = -EAGAIN;
goto out_release;
}
if (rc != 0)
goto out_discard;
- skb_queue_tail(&sk->sk_write_queue, skb);
+ rc = dccp_msghdr_parse(msg, skb);
+ if (rc != 0)
+ goto out_discard;
+
+ dccp_qpolicy_push(sk, skb);
/*
* The xmit_timer is set if the TX CCID is rate-based and will expire
* when congestion control permits to release further packets into the
--- /dev/null
+/*
+ * net/dccp/qpolicy.c
+ *
+ * Policy-based packet dequeueing interface for DCCP.
+ *
+ * Copyright (c) 2008 Tomasz Grobelny <tomasz@grobelny.oswiecenia.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License v2
+ * as published by the Free Software Foundation.
+ */
+#include "dccp.h"
+
+/*
+ * Simple Dequeueing Policy:
+ * If tx_qlen is different from 0, enqueue up to tx_qlen elements.
+ */
+static void qpolicy_simple_push(struct sock *sk, struct sk_buff *skb)
+{
+ skb_queue_tail(&sk->sk_write_queue, skb);
+}
+
+static bool qpolicy_simple_full(struct sock *sk)
+{
+ return dccp_sk(sk)->dccps_tx_qlen &&
+ sk->sk_write_queue.qlen >= dccp_sk(sk)->dccps_tx_qlen;
+}
+
+static struct sk_buff *qpolicy_simple_top(struct sock *sk)
+{
+ return skb_peek(&sk->sk_write_queue);
+}
+
+/*
+ * Priority-based Dequeueing Policy:
+ * If tx_qlen is different from 0 and the queue has reached its upper bound
+ * of tx_qlen elements, replace older packets lowest-priority-first.
+ */
+static struct sk_buff *qpolicy_prio_best_skb(struct sock *sk)
+{
+ struct sk_buff *skb, *best = NULL;
+
+ skb_queue_walk(&sk->sk_write_queue, skb)
+ if (best == NULL || skb->priority > best->priority)
+ best = skb;
+ return best;
+}
+
+static struct sk_buff *qpolicy_prio_worst_skb(struct sock *sk)
+{
+ struct sk_buff *skb, *worst = NULL;
+
+ skb_queue_walk(&sk->sk_write_queue, skb)
+ if (worst == NULL || skb->priority < worst->priority)
+ worst = skb;
+ return worst;
+}
+
+static bool qpolicy_prio_full(struct sock *sk)
+{
+ if (qpolicy_simple_full(sk))
+ dccp_qpolicy_drop(sk, qpolicy_prio_worst_skb(sk));
+ return false;
+}
+
+/**
+ * struct dccp_qpolicy_operations - TX Packet Dequeueing Interface
+ * @push: add a new @skb to the write queue
+ * @full: indicates that no more packets will be admitted
+ * @top: peeks at whatever the queueing policy defines as its `top'
+ */
+static struct dccp_qpolicy_operations {
+ void (*push) (struct sock *sk, struct sk_buff *skb);
+ bool (*full) (struct sock *sk);
+ struct sk_buff* (*top) (struct sock *sk);
+ __be32 params;
+
+} qpol_table[DCCPQ_POLICY_MAX] = {
+ [DCCPQ_POLICY_SIMPLE] = {
+ .push = qpolicy_simple_push,
+ .full = qpolicy_simple_full,
+ .top = qpolicy_simple_top,
+ .params = 0,
+ },
+ [DCCPQ_POLICY_PRIO] = {
+ .push = qpolicy_simple_push,
+ .full = qpolicy_prio_full,
+ .top = qpolicy_prio_best_skb,
+ .params = DCCP_SCM_PRIORITY,
+ },
+};
+
+/*
+ * Externally visible interface
+ */
+void dccp_qpolicy_push(struct sock *sk, struct sk_buff *skb)
+{
+ qpol_table[dccp_sk(sk)->dccps_qpolicy].push(sk, skb);
+}
+
+bool dccp_qpolicy_full(struct sock *sk)
+{
+ return qpol_table[dccp_sk(sk)->dccps_qpolicy].full(sk);
+}
+
+void dccp_qpolicy_drop(struct sock *sk, struct sk_buff *skb)
+{
+ if (skb != NULL) {
+ skb_unlink(skb, &sk->sk_write_queue);
+ kfree_skb(skb);
+ }
+}
+
+struct sk_buff *dccp_qpolicy_top(struct sock *sk)
+{
+ return qpol_table[dccp_sk(sk)->dccps_qpolicy].top(sk);
+}
+
+struct sk_buff *dccp_qpolicy_pop(struct sock *sk)
+{
+ struct sk_buff *skb = dccp_qpolicy_top(sk);
+
+ if (skb != NULL) {
+ /* Clear any skb fields that we used internally */
+ skb->priority = 0;
+ skb_unlink(skb, &sk->sk_write_queue);
+ }
+ return skb;
+}
+
+bool dccp_qpolicy_param_ok(struct sock *sk, __be32 param)
+{
+ /* check if exactly one bit is set */
+ if (!param || (param & (param - 1)))
+ return false;
+ return (qpol_table[dccp_sk(sk)->dccps_qpolicy].params & param) == param;
+}
if (r_len > sizeof(struct linkinfo_dn))
r_len = sizeof(struct linkinfo_dn);
+ memset(&link, 0, sizeof(link));
+
switch(sock->state) {
case SS_CONNECTING:
link.idn_linkstate = LL_CONNECTING;
if (dst_metric(dst, RTAX_MTU) > mtu && mtu >= min_mtu) {
if (!(dst_metric_locked(dst, RTAX_MTU))) {
- dst->metrics[RTAX_MTU-1] = mtu;
+ dst_metric_set(dst, RTAX_MTU, mtu);
dst_set_expires(dst, dn_rt_mtu_expires);
}
if (!(dst_metric_locked(dst, RTAX_ADVMSS))) {
u32 mss = mtu - DN_MAX_NSP_DATA_HEADER;
if (dst_metric(dst, RTAX_ADVMSS) > mss)
- dst->metrics[RTAX_ADVMSS-1] = mss;
+ dst_metric_set(dst, RTAX_ADVMSS, mss);
}
}
}
if (DN_FIB_RES_GW(*res) &&
DN_FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK)
rt->rt_gateway = DN_FIB_RES_GW(*res);
- memcpy(rt->dst.metrics, fi->fib_metrics,
- sizeof(rt->dst.metrics));
+ dst_import_metrics(&rt->dst, fi->fib_metrics);
}
rt->rt_type = res->type;
if (dst_metric(&rt->dst, RTAX_MTU) == 0 ||
dst_metric(&rt->dst, RTAX_MTU) > rt->dst.dev->mtu)
- rt->dst.metrics[RTAX_MTU-1] = rt->dst.dev->mtu;
+ dst_metric_set(&rt->dst, RTAX_MTU, rt->dst.dev->mtu);
mss = dn_mss_from_pmtu(dev, dst_mtu(&rt->dst));
if (dst_metric(&rt->dst, RTAX_ADVMSS) == 0 ||
dst_metric(&rt->dst, RTAX_ADVMSS) > mss)
- rt->dst.metrics[RTAX_ADVMSS-1] = mss;
+ dst_metric_set(&rt->dst, RTAX_ADVMSS, mss);
return 0;
}
RTA_PUT(skb, RTA_PREFSRC, 2, &rt->rt_local_src);
if (rt->rt_daddr != rt->rt_gateway)
RTA_PUT(skb, RTA_GATEWAY, 2, &rt->rt_gateway);
- if (rtnetlink_put_metrics(skb, rt->dst.metrics) < 0)
+ if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
goto rtattr_failure;
expires = rt->dst.expires ? rt->dst.expires - jiffies : 0;
if (rtnl_put_cacheinfo(skb, &rt->dst, 0, 0, 0, expires,
#include <linux/skbuff.h>
#include <linux/udp.h>
#include <linux/slab.h>
+#include <linux/vmalloc.h>
#include <net/sock.h>
#include <net/inet_common.h>
#include <linux/stat.h>
#endif
#ifdef CONFIG_ECONET_AUNUDP
struct msghdr udpmsg;
- struct iovec iov[msg->msg_iovlen+1];
+ struct iovec iov[2];
struct aunhdr ah;
struct sockaddr_in udpdest;
__kernel_size_t size;
- int i;
mm_segment_t oldfs;
+ char *userbuf;
#endif
/*
mutex_lock(&econet_mutex);
- if (saddr == NULL) {
- struct econet_sock *eo = ec_sk(sk);
-
- addr.station = eo->station;
- addr.net = eo->net;
- port = eo->port;
- cb = eo->cb;
- } else {
- if (msg->msg_namelen < sizeof(struct sockaddr_ec)) {
- mutex_unlock(&econet_mutex);
- return -EINVAL;
- }
- addr.station = saddr->addr.station;
- addr.net = saddr->addr.net;
- port = saddr->port;
- cb = saddr->cb;
- }
+ if (saddr == NULL || msg->msg_namelen < sizeof(struct sockaddr_ec)) {
+ mutex_unlock(&econet_mutex);
+ return -EINVAL;
+ }
+ addr.station = saddr->addr.station;
+ addr.net = saddr->addr.net;
+ port = saddr->port;
+ cb = saddr->cb;
/* Look for a device with the right network number. */
dev = net2dev_map[addr.net];
}
}
- if (len + 15 > dev->mtu) {
- mutex_unlock(&econet_mutex);
- return -EMSGSIZE;
- }
-
if (dev->type == ARPHRD_ECONET) {
/* Real hardware Econet. We're not worthy etc. */
#ifdef CONFIG_ECONET_NATIVE
unsigned short proto = 0;
int res;
+ if (len + 15 > dev->mtu) {
+ mutex_unlock(&econet_mutex);
+ return -EMSGSIZE;
+ }
+
dev_hold(dev);
skb = sock_alloc_send_skb(sk, len+LL_ALLOCATED_SPACE(dev),
eb = (struct ec_cb *)&skb->cb;
- /* BUG: saddr may be NULL */
eb->cookie = saddr->cookie;
eb->sec = *saddr;
eb->sent = ec_tx_done;
return -ENETDOWN; /* No socket - can't send */
}
+ if (len > 32768) {
+ err = -E2BIG;
+ goto error;
+ }
+
/* Make up a UDP datagram and hand it off to some higher intellect. */
memset(&udpdest, 0, sizeof(udpdest));
/* tack our header on the front of the iovec */
size = sizeof(struct aunhdr);
- /*
- * XXX: that is b0rken. We can't mix userland and kernel pointers
- * in iovec, since on a lot of platforms copy_from_user() will
- * *not* work with the kernel and userland ones at the same time,
- * regardless of what we do with set_fs(). And we are talking about
- * econet-over-ethernet here, so "it's only ARM anyway" doesn't
- * apply. Any suggestions on fixing that code? -- AV
- */
iov[0].iov_base = (void *)&ah;
iov[0].iov_len = size;
- for (i = 0; i < msg->msg_iovlen; i++) {
- void __user *base = msg->msg_iov[i].iov_base;
- size_t iov_len = msg->msg_iov[i].iov_len;
- /* Check it now since we switch to KERNEL_DS later. */
- if (!access_ok(VERIFY_READ, base, iov_len)) {
- mutex_unlock(&econet_mutex);
- return -EFAULT;
- }
- iov[i+1].iov_base = base;
- iov[i+1].iov_len = iov_len;
- size += iov_len;
+
+ userbuf = vmalloc(len);
+ if (userbuf == NULL) {
+ err = -ENOMEM;
+ goto error;
}
+ iov[1].iov_base = userbuf;
+ iov[1].iov_len = len;
+ err = memcpy_fromiovec(userbuf, msg->msg_iov, len);
+ if (err)
+ goto error_free_buf;
+
/* Get a skbuff (no data, just holds our cb information) */
if ((skb = sock_alloc_send_skb(sk, 0,
msg->msg_flags & MSG_DONTWAIT,
- &err)) == NULL) {
- mutex_unlock(&econet_mutex);
- return err;
- }
+ &err)) == NULL)
+ goto error_free_buf;
eb = (struct ec_cb *)&skb->cb;
udpmsg.msg_name = (void *)&udpdest;
udpmsg.msg_namelen = sizeof(udpdest);
udpmsg.msg_iov = &iov[0];
- udpmsg.msg_iovlen = msg->msg_iovlen + 1;
+ udpmsg.msg_iovlen = 2;
udpmsg.msg_control = NULL;
udpmsg.msg_controllen = 0;
udpmsg.msg_flags=0;
oldfs = get_fs(); set_fs(KERNEL_DS); /* More privs :-) */
err = sock_sendmsg(udpsock, &udpmsg, size);
set_fs(oldfs);
+
+error_free_buf:
+ vfree(userbuf);
#else
err = -EPROTOTYPE;
#endif
+ error:
mutex_unlock(&econet_mutex);
return err;
err = 0;
switch (cmd) {
case SIOCSIFADDR:
+ if (!capable(CAP_NET_ADMIN)) {
+ err = -EPERM;
+ break;
+ }
+
edev = dev->ec_ptr;
if (edev == NULL) {
/* Magic up a new one. */
switch (addr->addr_type) {
case IEEE802154_ADDR_LONG:
- rtnl_lock();
- dev = dev_getbyhwaddr(net, ARPHRD_IEEE802154, addr->hwaddr);
+ rcu_read_lock();
+ dev = dev_getbyhwaddr_rcu(net, ARPHRD_IEEE802154, addr->hwaddr);
if (dev)
dev_hold(dev);
- rtnl_unlock();
+ rcu_read_unlock();
break;
case IEEE802154_ADDR_SHORT:
if (addr->pan_id == 0xffff ||
dont_send = arp_ignore(in_dev, sip, tip);
if (!dont_send && IN_DEV_ARPFILTER(in_dev))
- dont_send |= arp_filter(sip, tip, dev);
+ dont_send = arp_filter(sip, tip, dev);
if (!dont_send) {
n = neigh_event_ns(&arp_tbl, sha, &sip, dev);
if (n) {
IPV4_DEVCONF_ALL(net, PROXY_ARP) = on;
return 0;
}
- if (__in_dev_get_rtnl(dev)) {
- IN_DEV_CONF_SET(__in_dev_get_rtnl(dev), PROXY_ARP, on);
+ if (__in_dev_get_rcu(dev)) {
+ IN_DEV_CONF_SET(__in_dev_get_rcu(dev), PROXY_ARP, on);
return 0;
}
return -ENXIO;
}
+/* must be called with rcu_read_lock() */
static int arp_req_set_public(struct net *net, struct arpreq *r,
struct net_device *dev)
{
if (mask && mask != htonl(0xFFFFFFFF))
return -EINVAL;
if (!dev && (r->arp_flags & ATF_COM)) {
- dev = dev_getbyhwaddr(net, r->arp_ha.sa_family,
+ dev = dev_getbyhwaddr_rcu(net, r->arp_ha.sa_family,
r->arp_ha.sa_data);
if (!dev)
return -ENODEV;
if (!(r.arp_flags & ATF_NETMASK))
((struct sockaddr_in *)&r.arp_netmask)->sin_addr.s_addr =
htonl(0xFFFFFFFFUL);
- rtnl_lock();
+ rcu_read_lock();
if (r.arp_dev[0]) {
err = -ENODEV;
- dev = __dev_get_by_name(net, r.arp_dev);
+ dev = dev_get_by_name_rcu(net, r.arp_dev);
if (dev == NULL)
goto out;
break;
case SIOCGARP:
err = arp_req_get(&r, dev);
- if (!err && copy_to_user(arg, &r, sizeof(r)))
- err = -EFAULT;
break;
}
out:
- rtnl_unlock();
+ rcu_read_unlock();
+ if (cmd == SIOCGARP && !err && copy_to_user(arg, &r, sizeof(r)))
+ err = -EFAULT;
return err;
}
static size_t inet_get_link_af_size(const struct net_device *dev)
{
- struct in_device *in_dev = __in_dev_get_rcu(dev);
+ struct in_device *in_dev = __in_dev_get_rtnl(dev);
if (!in_dev)
return 0;
static int inet_fill_link_af(struct sk_buff *skb, const struct net_device *dev)
{
- struct in_device *in_dev = __in_dev_get_rcu(dev);
+ struct in_device *in_dev = __in_dev_get_rtnl(dev);
struct nlattr *nla;
int i;
struct nlattr *a, *tb[IFLA_INET_MAX+1];
int err, rem;
- if (dev && !__in_dev_get_rcu(dev))
+ if (dev && !__in_dev_get_rtnl(dev))
return -EAFNOSUPPORT;
err = nla_parse_nested(tb, IFLA_INET_MAX, nla, inet_af_policy);
static int inet_set_link_af(struct net_device *dev, const struct nlattr *nla)
{
- struct in_device *in_dev = __in_dev_get_rcu(dev);
+ struct in_device *in_dev = __in_dev_get_rtnl(dev);
struct nlattr *a, *tb[IFLA_INET_MAX+1];
int rem;
if (size <= PAGE_SIZE)
return kzalloc(size, GFP_KERNEL);
else
- return __vmalloc(size, GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL);
+ return vzalloc(size);
}
static void __tnode_vfree(struct work_struct *arg)
int inet_csk_bind_conflict(const struct sock *sk,
const struct inet_bind_bucket *tb)
{
- const __be32 sk_rcv_saddr = inet_rcv_saddr(sk);
struct sock *sk2;
struct hlist_node *node;
int reuse = sk->sk_reuse;
sk->sk_bound_dev_if == sk2->sk_bound_dev_if)) {
if (!reuse || !sk2->sk_reuse ||
sk2->sk_state == TCP_LISTEN) {
- const __be32 sk2_rcv_saddr = inet_rcv_saddr(sk2);
- if (!sk2_rcv_saddr || !sk_rcv_saddr ||
- sk2_rcv_saddr == sk_rcv_saddr)
+ const __be32 sk2_rcv_saddr = sk_rcv_saddr(sk2);
+ if (!sk2_rcv_saddr || !sk_rcv_saddr(sk) ||
+ sk2_rcv_saddr == sk_rcv_saddr(sk))
break;
}
}
}
}
}
- sk_add_bind_node(child, &tb->owners);
- inet_csk(child)->icsk_bind_hash = tb;
+ inet_bind_hash(child, tb, port);
spin_unlock(&head->lock);
return 0;
!ipv4_is_multicast(tunnel->parms.iph.daddr)) ||
rt6->rt6i_dst.plen == 128) {
rt6->rt6i_flags |= RTF_MODIFIED;
- skb_dst(skb)->metrics[RTAX_MTU-1] = mtu;
+ dst_metric_set(skb_dst(skb), RTAX_MTU, mtu);
}
}
SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP),
SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER),
+ SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW),
SNMP_MIB_SENTINEL
};
if (mtu < dst_mtu(&rth->dst)) {
dst_confirm(&rth->dst);
if (mtu < ip_rt_min_pmtu) {
+ u32 lock = dst_metric(&rth->dst,
+ RTAX_LOCK);
mtu = ip_rt_min_pmtu;
- rth->dst.metrics[RTAX_LOCK-1] |=
- (1 << RTAX_MTU);
+ lock |= (1 << RTAX_MTU);
+ dst_metric_set(&rth->dst, RTAX_LOCK,
+ lock);
}
- rth->dst.metrics[RTAX_MTU-1] = mtu;
+ dst_metric_set(&rth->dst, RTAX_MTU, mtu);
dst_set_expires(&rth->dst,
ip_rt_mtu_expires);
}
if (dst_mtu(dst) > mtu && mtu >= 68 &&
!(dst_metric_locked(dst, RTAX_MTU))) {
if (mtu < ip_rt_min_pmtu) {
+ u32 lock = dst_metric(dst, RTAX_LOCK);
mtu = ip_rt_min_pmtu;
- dst->metrics[RTAX_LOCK-1] |= (1 << RTAX_MTU);
+ dst_metric_set(dst, RTAX_LOCK, lock | (1 << RTAX_MTU));
}
- dst->metrics[RTAX_MTU-1] = mtu;
+ dst_metric_set(dst, RTAX_MTU, mtu);
dst_set_expires(dst, ip_rt_mtu_expires);
call_netevent_notifiers(NETEVENT_PMTU_UPDATE, dst);
}
static void rt_set_nexthop(struct rtable *rt, struct fib_result *res, u32 itag)
{
+ struct dst_entry *dst = &rt->dst;
struct fib_info *fi = res->fi;
if (fi) {
if (FIB_RES_GW(*res) &&
FIB_RES_NH(*res).nh_scope == RT_SCOPE_LINK)
rt->rt_gateway = FIB_RES_GW(*res);
- memcpy(rt->dst.metrics, fi->fib_metrics,
- sizeof(rt->dst.metrics));
+ dst_import_metrics(dst, fi->fib_metrics);
if (fi->fib_mtu == 0) {
- rt->dst.metrics[RTAX_MTU-1] = rt->dst.dev->mtu;
- if (dst_metric_locked(&rt->dst, RTAX_MTU) &&
+ dst_metric_set(dst, RTAX_MTU, dst->dev->mtu);
+ if (dst_metric_locked(dst, RTAX_MTU) &&
rt->rt_gateway != rt->rt_dst &&
- rt->dst.dev->mtu > 576)
- rt->dst.metrics[RTAX_MTU-1] = 576;
+ dst->dev->mtu > 576)
+ dst_metric_set(dst, RTAX_MTU, 576);
}
#ifdef CONFIG_NET_CLS_ROUTE
- rt->dst.tclassid = FIB_RES_NH(*res).nh_tclassid;
+ dst->tclassid = FIB_RES_NH(*res).nh_tclassid;
#endif
} else
- rt->dst.metrics[RTAX_MTU-1]= rt->dst.dev->mtu;
-
- if (dst_metric(&rt->dst, RTAX_HOPLIMIT) == 0)
- rt->dst.metrics[RTAX_HOPLIMIT-1] = sysctl_ip_default_ttl;
- if (dst_mtu(&rt->dst) > IP_MAX_MTU)
- rt->dst.metrics[RTAX_MTU-1] = IP_MAX_MTU;
- if (dst_metric(&rt->dst, RTAX_ADVMSS) == 0)
- rt->dst.metrics[RTAX_ADVMSS-1] = max_t(unsigned int, rt->dst.dev->mtu - 40,
- ip_rt_min_advmss);
- if (dst_metric(&rt->dst, RTAX_ADVMSS) > 65535 - 40)
- rt->dst.metrics[RTAX_ADVMSS-1] = 65535 - 40;
+ dst_metric_set(dst, RTAX_MTU, dst->dev->mtu);
+
+ if (dst_metric(dst, RTAX_HOPLIMIT) == 0)
+ dst_metric_set(dst, RTAX_HOPLIMIT, sysctl_ip_default_ttl);
+ if (dst_mtu(dst) > IP_MAX_MTU)
+ dst_metric_set(dst, RTAX_MTU, IP_MAX_MTU);
+ if (dst_metric(dst, RTAX_ADVMSS) == 0)
+ dst_metric_set(dst, RTAX_ADVMSS,
+ max_t(unsigned int, dst->dev->mtu - 40,
+ ip_rt_min_advmss));
+ if (dst_metric(dst, RTAX_ADVMSS) > 65535 - 40)
+ dst_metric_set(dst, RTAX_ADVMSS, 65535 - 40);
#ifdef CONFIG_NET_CLS_ROUTE
#ifdef CONFIG_IP_MULTIPLE_TABLES
new->__use = 1;
new->input = dst_discard;
new->output = dst_discard;
- memcpy(new->metrics, ort->dst.metrics, RTAX_MAX*sizeof(u32));
+ dst_copy_metrics(new, &ort->dst);
new->dev = ort->dst.dev;
if (new->dev)
if (rt->rt_dst != rt->rt_gateway)
NLA_PUT_BE32(skb, RTA_GATEWAY, rt->rt_gateway);
- if (rtnetlink_put_metrics(skb, rt->dst.metrics) < 0)
+ if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
goto nla_put_failure;
if (rt->fl.mark)
static int tcp_retr1_max = 255;
static int ip_local_port_range_min[] = { 1, 1 };
static int ip_local_port_range_max[] = { 65535, 65535 };
+static int tcp_adv_win_scale_min = -31;
+static int tcp_adv_win_scale_max = 31;
/* Update system visible IP port range */
static void set_local_port_range(int range[2])
.data = &sysctl_tcp_adv_win_scale,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &tcp_adv_win_scale_min,
+ .extra2 = &tcp_adv_win_scale_max,
},
{
.procname = "tcp_tw_reuse",
/* Values greater than interface MTU won't take effect. However
* at the point when this call is done we typically don't yet
* know which interface is going to be used */
- if (val < 64 || val > MAX_TCP_WINDOW) {
+ if (val < TCP_MIN_MSS || val > MAX_TCP_WINDOW) {
err = -EINVAL;
break;
}
* Reset our results.
*/
if (!(dst_metric_locked(dst, RTAX_RTT)))
- dst->metrics[RTAX_RTT - 1] = 0;
+ dst_metric_set(dst, RTAX_RTT, 0);
return;
}
if (dst_metric(dst, RTAX_SSTHRESH) &&
!dst_metric_locked(dst, RTAX_SSTHRESH) &&
(tp->snd_cwnd >> 1) > dst_metric(dst, RTAX_SSTHRESH))
- dst->metrics[RTAX_SSTHRESH-1] = tp->snd_cwnd >> 1;
+ dst_metric_set(dst, RTAX_SSTHRESH, tp->snd_cwnd >> 1);
if (!dst_metric_locked(dst, RTAX_CWND) &&
tp->snd_cwnd > dst_metric(dst, RTAX_CWND))
- dst->metrics[RTAX_CWND - 1] = tp->snd_cwnd;
+ dst_metric_set(dst, RTAX_CWND, tp->snd_cwnd);
} else if (tp->snd_cwnd > tp->snd_ssthresh &&
icsk->icsk_ca_state == TCP_CA_Open) {
/* Cong. avoidance phase, cwnd is reliable. */
if (!dst_metric_locked(dst, RTAX_SSTHRESH))
- dst->metrics[RTAX_SSTHRESH-1] =
- max(tp->snd_cwnd >> 1, tp->snd_ssthresh);
+ dst_metric_set(dst, RTAX_SSTHRESH,
+ max(tp->snd_cwnd >> 1, tp->snd_ssthresh));
if (!dst_metric_locked(dst, RTAX_CWND))
- dst->metrics[RTAX_CWND-1] = (dst_metric(dst, RTAX_CWND) + tp->snd_cwnd) >> 1;
+ dst_metric_set(dst, RTAX_CWND,
+ (dst_metric(dst, RTAX_CWND) +
+ tp->snd_cwnd) >> 1);
} else {
/* Else slow start did not finish, cwnd is non-sense,
ssthresh may be also invalid.
*/
if (!dst_metric_locked(dst, RTAX_CWND))
- dst->metrics[RTAX_CWND-1] = (dst_metric(dst, RTAX_CWND) + tp->snd_ssthresh) >> 1;
+ dst_metric_set(dst, RTAX_CWND,
+ (dst_metric(dst, RTAX_CWND) +
+ tp->snd_ssthresh) >> 1);
if (dst_metric(dst, RTAX_SSTHRESH) &&
!dst_metric_locked(dst, RTAX_SSTHRESH) &&
tp->snd_ssthresh > dst_metric(dst, RTAX_SSTHRESH))
- dst->metrics[RTAX_SSTHRESH-1] = tp->snd_ssthresh;
+ dst_metric_set(dst, RTAX_SSTHRESH, tp->snd_ssthresh);
}
if (!dst_metric_locked(dst, RTAX_REORDERING)) {
if (dst_metric(dst, RTAX_REORDERING) < tp->reordering &&
tp->reordering != sysctl_tcp_reordering)
- dst->metrics[RTAX_REORDERING-1] = tp->reordering;
+ dst_metric_set(dst, RTAX_REORDERING, tp->reordering);
}
}
}
}
get_sk:
sk_nulls_for_each_from(sk, node) {
- if (sk->sk_family == st->family && net_eq(sock_net(sk), net)) {
+ if (!net_eq(sock_net(sk), net))
+ continue;
+ if (sk->sk_family == st->family) {
cur = sk;
goto out;
}
* socket up. We've got bigger problems than
* non-graceful socket closings.
*/
- LIMIT_NETDEBUG(KERN_INFO "TCP: time wait bucket table overflow\n");
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPTIMEWAITOVERFLOW);
}
tcp_update_metrics(sk);
/* when initializing use the value from init_rcv_wnd
* rather than the default from above
*/
- if (init_rcv_wnd &&
- (*rcv_wnd > init_rcv_wnd * mss))
- *rcv_wnd = init_rcv_wnd * mss;
- else if (*rcv_wnd > init_cwnd * mss)
- *rcv_wnd = init_cwnd * mss;
+ if (init_rcv_wnd)
+ *rcv_wnd = min(*rcv_wnd, init_rcv_wnd * mss);
+ else
+ *rcv_wnd = min(*rcv_wnd, init_cwnd * mss);
}
/* Set the clamp no higher than max representable value */
*/
static u8 tcp_cookie_size_check(u8 desired)
{
- if (desired > 0) {
+ int cookie_size;
+
+ if (desired > 0)
/* previously specified */
return desired;
- }
- if (sysctl_tcp_cookie_size <= 0) {
+
+ cookie_size = ACCESS_ONCE(sysctl_tcp_cookie_size);
+ if (cookie_size <= 0)
/* no default specified */
return 0;
- }
- if (sysctl_tcp_cookie_size <= TCP_COOKIE_MIN) {
+
+ if (cookie_size <= TCP_COOKIE_MIN)
/* value too small, specify minimum */
return TCP_COOKIE_MIN;
- }
- if (sysctl_tcp_cookie_size >= TCP_COOKIE_MAX) {
+
+ if (cookie_size >= TCP_COOKIE_MAX)
/* value too large, specify maximum */
return TCP_COOKIE_MAX;
- }
- if (0x1 & sysctl_tcp_cookie_size) {
+
+ if (cookie_size & 1)
/* 8-bit multiple, illegal, fix it */
- return (u8)(sysctl_tcp_cookie_size + 0x1);
- }
- return (u8)sysctl_tcp_cookie_size;
+ cookie_size++;
+
+ return (u8)cookie_size;
}
/* Write previously computed TCP options to the packet.
struct tcp_sock *tp = tcp_sk(sk);
const struct inet_connection_sock *icsk = inet_csk(sk);
u32 send_win, cong_win, limit, in_flight;
+ int win_divisor;
if (TCP_SKB_CB(skb)->flags & TCPHDR_FIN)
goto send_now;
if ((skb != tcp_write_queue_tail(sk)) && (limit >= skb->len))
goto send_now;
- if (sysctl_tcp_tso_win_divisor) {
+ win_divisor = ACCESS_ONCE(sysctl_tcp_tso_win_divisor);
+ if (win_divisor) {
u32 chunk = min(tp->snd_wnd, tp->snd_cwnd * tp->mss_cache);
/* If at least some fraction of a window is available,
* just use it.
*/
- chunk /= sysctl_tcp_tso_win_divisor;
+ chunk /= win_divisor;
if (limit >= chunk)
goto send_now;
} else {
sizeof (struct ipv6hdr);
dev->mtu = rt->rt6i_dev->mtu - sizeof (struct ipv6hdr);
+ if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
+ dev->mtu-=8;
if (dev->mtu < IPV6_MIN_MTU)
dev->mtu = IPV6_MIN_MTU;
static void ip6_tnl_dev_setup(struct net_device *dev)
{
+ struct ip6_tnl *t;
+
dev->netdev_ops = &ip6_tnl_netdev_ops;
dev->destructor = ip6_dev_free;
dev->type = ARPHRD_TUNNEL6;
dev->hard_header_len = LL_MAX_HEADER + sizeof (struct ipv6hdr);
dev->mtu = ETH_DATA_LEN - sizeof (struct ipv6hdr);
+ t = netdev_priv(dev);
+ if (!(t->parms.flags & IP6_TNL_F_IGN_ENCAP_LIMIT))
+ dev->mtu-=8;
dev->flags |= IFF_NOARP;
dev->addr_len = sizeof(struct in6_addr);
dev->features |= NETIF_F_NETNS_LOCAL;
if (ra_msg->icmph.icmp6_hop_limit) {
in6_dev->cnf.hop_limit = ra_msg->icmph.icmp6_hop_limit;
if (rt)
- rt->dst.metrics[RTAX_HOPLIMIT-1] = ra_msg->icmph.icmp6_hop_limit;
+ dst_metric_set(&rt->dst, RTAX_HOPLIMIT,
+ ra_msg->icmph.icmp6_hop_limit);
}
skip_defrtr:
in6_dev->cnf.mtu6 = mtu;
if (rt)
- rt->dst.metrics[RTAX_MTU-1] = mtu;
+ dst_metric_set(&rt->dst, RTAX_MTU, mtu);
rt6_mtu_change(skb->dev, mtu);
}
.__use = 1,
.obsolete = -1,
.error = -ENETUNREACH,
- .metrics = { [RTAX_HOPLIMIT - 1] = 255, },
.input = ip6_pkt_discard,
.output = ip6_pkt_discard_out,
},
.__use = 1,
.obsolete = -1,
.error = -EACCES,
- .metrics = { [RTAX_HOPLIMIT - 1] = 255, },
.input = ip6_pkt_prohibit,
.output = ip6_pkt_prohibit_out,
},
.__use = 1,
.obsolete = -1,
.error = -EINVAL,
- .metrics = { [RTAX_HOPLIMIT - 1] = 255, },
.input = dst_discard,
.output = dst_discard,
},
new->input = dst_discard;
new->output = dst_discard;
- memcpy(new->metrics, ort->dst.metrics, RTAX_MAX*sizeof(u32));
+ dst_copy_metrics(new, &ort->dst);
new->dev = ort->dst.dev;
if (new->dev)
dev_hold(new->dev);
if (mtu < dst_mtu(dst) && rt6->rt6i_dst.plen == 128) {
rt6->rt6i_flags |= RTF_MODIFIED;
if (mtu < IPV6_MIN_MTU) {
+ u32 features = dst_metric(dst, RTAX_FEATURES);
mtu = IPV6_MIN_MTU;
- dst->metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
+ features |= RTAX_FEATURE_ALLFRAG;
+ dst_metric_set(dst, RTAX_FEATURES, features);
}
- dst->metrics[RTAX_MTU-1] = mtu;
+ dst_metric_set(dst, RTAX_MTU, mtu);
call_netevent_notifiers(NETEVENT_PMTU_UPDATE, dst);
}
}
rt->rt6i_idev = idev;
rt->rt6i_nexthop = neigh;
atomic_set(&rt->dst.__refcnt, 1);
- rt->dst.metrics[RTAX_HOPLIMIT-1] = 255;
- rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
- rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
+ dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
+ dst_metric_set(&rt->dst, RTAX_MTU, ipv6_get_mtu(rt->rt6i_dev));
+ dst_metric_set(&rt->dst, RTAX_ADVMSS, ipv6_advmss(net, dst_mtu(&rt->dst)));
rt->dst.output = ip6_output;
#if 0 /* there's no chance to use these for ndisc */
goto out;
}
- rt->dst.metrics[type - 1] = nla_get_u32(nla);
+ dst_metric_set(&rt->dst, type, nla_get_u32(nla));
}
}
}
if (dst_metric(&rt->dst, RTAX_HOPLIMIT) == 0)
- rt->dst.metrics[RTAX_HOPLIMIT-1] = -1;
+ dst_metric_set(&rt->dst, RTAX_HOPLIMIT, -1);
if (!dst_mtu(&rt->dst))
- rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(dev);
+ dst_metric_set(&rt->dst, RTAX_MTU, ipv6_get_mtu(dev));
if (!dst_metric(&rt->dst, RTAX_ADVMSS))
- rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
+ dst_metric_set(&rt->dst, RTAX_ADVMSS, ipv6_advmss(net, dst_mtu(&rt->dst)));
rt->dst.dev = dev;
rt->rt6i_idev = idev;
rt->rt6i_table = table;
ipv6_addr_copy(&nrt->rt6i_gateway, (struct in6_addr*)neigh->primary_key);
nrt->rt6i_nexthop = neigh_clone(neigh);
/* Reset pmtu, it may be better */
- nrt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(neigh->dev);
- nrt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(dev_net(neigh->dev),
- dst_mtu(&nrt->dst));
+ dst_metric_set(&nrt->dst, RTAX_MTU, ipv6_get_mtu(neigh->dev));
+ dst_metric_set(&nrt->dst, RTAX_ADVMSS, ipv6_advmss(dev_net(neigh->dev),
+ dst_mtu(&nrt->dst)));
if (ip6_ins_rt(nrt))
goto out;
would return automatically.
*/
if (rt->rt6i_flags & RTF_CACHE) {
- rt->dst.metrics[RTAX_MTU-1] = pmtu;
- if (allfrag)
- rt->dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
+ dst_metric_set(&rt->dst, RTAX_MTU, pmtu);
+ if (allfrag) {
+ u32 features = dst_metric(&rt->dst, RTAX_FEATURES);
+ features |= RTAX_FEATURE_ALLFRAG;
+ dst_metric_set(&rt->dst, RTAX_FEATURES, features);
+ }
dst_set_expires(&rt->dst, net->ipv6.sysctl.ip6_rt_mtu_expires);
rt->rt6i_flags |= RTF_MODIFIED|RTF_EXPIRES;
goto out;
nrt = rt6_alloc_clone(rt, daddr);
if (nrt) {
- nrt->dst.metrics[RTAX_MTU-1] = pmtu;
- if (allfrag)
- nrt->dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
+ dst_metric_set(&nrt->dst, RTAX_MTU, pmtu);
+ if (allfrag) {
+ u32 features = dst_metric(&nrt->dst, RTAX_FEATURES);
+ features |= RTAX_FEATURE_ALLFRAG;
+ dst_metric_set(&nrt->dst, RTAX_FEATURES, features);
+ }
/* According to RFC 1981, detecting PMTU increase shouldn't be
* happened within 5 mins, the recommended timer is 10 mins.
rt->dst.input = ort->dst.input;
rt->dst.output = ort->dst.output;
- memcpy(rt->dst.metrics, ort->dst.metrics, RTAX_MAX*sizeof(u32));
+ dst_copy_metrics(&rt->dst, &ort->dst);
rt->dst.error = ort->dst.error;
rt->dst.dev = ort->dst.dev;
if (rt->dst.dev)
rt->dst.output = ip6_output;
rt->rt6i_dev = net->loopback_dev;
rt->rt6i_idev = idev;
- rt->dst.metrics[RTAX_MTU-1] = ipv6_get_mtu(rt->rt6i_dev);
- rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, dst_mtu(&rt->dst));
- rt->dst.metrics[RTAX_HOPLIMIT-1] = -1;
+ dst_metric_set(&rt->dst, RTAX_MTU, ipv6_get_mtu(rt->rt6i_dev));
+ dst_metric_set(&rt->dst, RTAX_ADVMSS, ipv6_advmss(net, dst_mtu(&rt->dst)));
+ dst_metric_set(&rt->dst, RTAX_HOPLIMIT, -1);
rt->dst.obsolete = -1;
rt->rt6i_flags = RTF_UP | RTF_NONEXTHOP;
(dst_mtu(&rt->dst) >= arg->mtu ||
(dst_mtu(&rt->dst) < arg->mtu &&
dst_mtu(&rt->dst) == idev->cnf.mtu6))) {
- rt->dst.metrics[RTAX_MTU-1] = arg->mtu;
- rt->dst.metrics[RTAX_ADVMSS-1] = ipv6_advmss(net, arg->mtu);
+ dst_metric_set(&rt->dst, RTAX_MTU, arg->mtu);
+ dst_metric_set(&rt->dst, RTAX_ADVMSS, ipv6_advmss(net, arg->mtu));
}
return 0;
}
NLA_PUT(skb, RTA_PREFSRC, 16, &saddr_buf);
}
- if (rtnetlink_put_metrics(skb, rt->dst.metrics) < 0)
+ if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
goto nla_put_failure;
if (rt->dst.neighbour)
net->ipv6.ip6_null_entry->dst.path =
(struct dst_entry *)net->ipv6.ip6_null_entry;
net->ipv6.ip6_null_entry->dst.ops = &net->ipv6.ip6_dst_ops;
+ dst_metric_set(&net->ipv6.ip6_null_entry->dst, RTAX_HOPLIMIT, 255);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
net->ipv6.ip6_prohibit_entry = kmemdup(&ip6_prohibit_entry_template,
net->ipv6.ip6_prohibit_entry->dst.path =
(struct dst_entry *)net->ipv6.ip6_prohibit_entry;
net->ipv6.ip6_prohibit_entry->dst.ops = &net->ipv6.ip6_dst_ops;
+ dst_metric_set(&net->ipv6.ip6_prohibit_entry->dst, RTAX_HOPLIMIT, 255);
net->ipv6.ip6_blk_hole_entry = kmemdup(&ip6_blk_hole_entry_template,
sizeof(*net->ipv6.ip6_blk_hole_entry),
net->ipv6.ip6_blk_hole_entry->dst.path =
(struct dst_entry *)net->ipv6.ip6_blk_hole_entry;
net->ipv6.ip6_blk_hole_entry->dst.ops = &net->ipv6.ip6_dst_ops;
+ dst_metric_set(&net->ipv6.ip6_blk_hole_entry->dst, RTAX_HOPLIMIT, 255);
#endif
net->ipv6.sysctl.flush_delay = 0;
return 0;
}
- icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
+ /* no tunnel matched, let upstream know, ipsec may handle it */
rcu_read_unlock();
+ return 1;
out:
kfree_skb(skb);
return 0;
{
const struct in6_addr *sk_rcv_saddr6 = &inet6_sk(sk)->rcv_saddr;
const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
- __be32 sk1_rcv_saddr = inet_sk(sk)->inet_rcv_saddr;
- __be32 sk2_rcv_saddr = inet_rcv_saddr(sk2);
+ __be32 sk1_rcv_saddr = sk_rcv_saddr(sk);
+ __be32 sk2_rcv_saddr = sk_rcv_saddr(sk2);
int sk_ipv6only = ipv6_only_sock(sk);
int sk2_ipv6only = inet_v6_ipv6only(sk2);
int addr_type = ipv6_addr_type(sk_rcv_saddr6);
MODULE_AUTHOR("James Chapman <jchapman@katalix.com>");
MODULE_DESCRIPTION("L2TP over IP");
MODULE_VERSION("1.0");
-MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, SOCK_DGRAM, IPPROTO_L2TP);
+
+/* Use the value of SOCK_DGRAM (2) directory, because __stringify does't like
+ * enums
+ */
+MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_INET, 2, IPPROTO_L2TP);
if (unlikely(addr->sllc_family != AF_LLC))
goto out;
rc = -ENODEV;
- rtnl_lock();
+ rcu_read_lock();
if (sk->sk_bound_dev_if) {
- llc->dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
+ llc->dev = dev_get_by_index_rcu(&init_net, sk->sk_bound_dev_if);
if (llc->dev) {
if (!addr->sllc_arphrd)
addr->sllc_arphrd = llc->dev->type;
!llc_mac_match(addr->sllc_mac,
llc->dev->dev_addr)) {
rc = -EINVAL;
- dev_put(llc->dev);
llc->dev = NULL;
}
}
} else
- llc->dev = dev_getbyhwaddr(&init_net, addr->sllc_arphrd,
+ llc->dev = dev_getbyhwaddr_rcu(&init_net, addr->sllc_arphrd,
addr->sllc_mac);
- rtnl_unlock();
+ if (llc->dev)
+ dev_hold(llc->dev);
+ rcu_read_unlock();
if (!llc->dev)
goto out;
if (!addr->sllc_sap) {
#define PGV_FROM_VMALLOC 1
struct pgv {
char *buffer;
- unsigned char flags;
};
struct packet_ring_buffer {
#define PACKET_SKB_CB(__skb) ((struct packet_skb_cb *)((__skb)->cb))
+static inline __pure struct page *pgv_to_page(void *addr)
+{
+ if (is_vmalloc_addr(addr))
+ return vmalloc_to_page(addr);
+ return virt_to_page(addr);
+}
+
static void __packet_set_status(struct packet_sock *po, void *frame, int status)
{
union {
switch (po->tp_version) {
case TPACKET_V1:
h.h1->tp_status = status;
- flush_dcache_page(virt_to_page(&h.h1->tp_status));
+ flush_dcache_page(pgv_to_page(&h.h1->tp_status));
break;
case TPACKET_V2:
h.h2->tp_status = status;
- flush_dcache_page(virt_to_page(&h.h2->tp_status));
+ flush_dcache_page(pgv_to_page(&h.h2->tp_status));
break;
default:
pr_err("TPACKET version not supported\n");
h.raw = frame;
switch (po->tp_version) {
case TPACKET_V1:
- flush_dcache_page(virt_to_page(&h.h1->tp_status));
+ flush_dcache_page(pgv_to_page(&h.h1->tp_status));
return h.h1->tp_status;
case TPACKET_V2:
- flush_dcache_page(virt_to_page(&h.h2->tp_status));
+ flush_dcache_page(pgv_to_page(&h.h2->tp_status));
return h.h2->tp_status;
default:
pr_err("TPACKET version not supported\n");
return err;
}
-static inline unsigned int run_filter(struct sk_buff *skb, struct sock *sk,
+static inline unsigned int run_filter(const struct sk_buff *skb,
+ const struct sock *sk,
unsigned int res)
{
struct sk_filter *filter;
}
/*
- This function makes lazy skb cloning in hope that most of packets
- are discarded by BPF.
-
- Note tricky part: we DO mangle shared skb! skb->data, skb->len
- and skb->cb are mangled. It works because (and until) packets
- falling here are owned by current CPU. Output packets are cloned
- by dev_queue_xmit_nit(), input packets are processed by net_bh
- sequencially, so that if we return skb to original state on exit,
- we will not harm anyone.
+ * This function makes lazy skb cloning in hope that most of packets
+ * are discarded by BPF.
+ *
+ * Note tricky part: we DO mangle shared skb! skb->data, skb->len
+ * and skb->cb are mangled. It works because (and until) packets
+ * falling here are owned by current CPU. Output packets are cloned
+ * by dev_queue_xmit_nit(), input packets are processed by net_bh
+ * sequencially, so that if we return skb to original state on exit,
+ * we will not harm anyone.
*/
static int packet_rcv(struct sk_buff *skb, struct net_device *dev,
if (dev->header_ops) {
/* The device has an explicit notion of ll header,
- exported to higher levels.
-
- Otherwise, the device hides datails of it frame
- structure, so that corresponding packet head
- never delivered to user.
+ * exported to higher levels.
+ *
+ * Otherwise, the device hides details of its frame
+ * structure, so that corresponding packet head is
+ * never delivered to user.
*/
if (sk->sk_type != SOCK_DGRAM)
skb_push(skb, skb->data - skb_mac_header(skb));
__packet_set_status(po, h.raw, status);
smp_mb();
+#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 1
{
- struct page *p_start, *p_end;
- u8 *h_end = h.raw + macoff + snaplen - 1;
-
- p_start = virt_to_page(h.raw);
- p_end = virt_to_page(h_end);
- while (p_start <= p_end) {
- flush_dcache_page(p_start);
- p_start++;
- }
+ u8 *start, *end;
+
+ end = (u8 *)PAGE_ALIGN((unsigned long)h.raw + macoff + snaplen);
+ for (start = h.raw; start < end; start += PAGE_SIZE)
+ flush_dcache_page(pgv_to_page(start));
}
+#endif
sk->sk_data_ready(sk, 0);
}
err = -EFAULT;
- page = virt_to_page(data);
offset = offset_in_page(data);
len_max = PAGE_SIZE - offset;
len = ((to_write > len_max) ? len_max : to_write);
return -EFAULT;
}
+ page = pgv_to_page(data);
+ data += len;
flush_dcache_page(page);
get_page(page);
- skb_fill_page_desc(skb,
- nr_frags,
- page++, offset, len);
+ skb_fill_page_desc(skb, nr_frags, page, offset, len);
to_write -= len;
offset = 0;
len_max = PAGE_SIZE;
for (i = 0; i < len; i++) {
if (likely(pg_vec[i].buffer)) {
- if (pg_vec[i].flags & PGV_FROM_VMALLOC)
+ if (is_vmalloc_addr(pg_vec[i].buffer))
vfree(pg_vec[i].buffer);
else
free_pages((unsigned long)pg_vec[i].buffer,
kfree(pg_vec);
}
-static inline char *alloc_one_pg_vec_page(unsigned long order,
- unsigned char *flags)
+static inline char *alloc_one_pg_vec_page(unsigned long order)
{
char *buffer = NULL;
gfp_t gfp_flags = GFP_KERNEL | __GFP_COMP |
/*
* __get_free_pages failed, fall back to vmalloc
*/
- *flags |= PGV_FROM_VMALLOC;
buffer = vzalloc((1 << order) * PAGE_SIZE);
if (buffer)
/*
* vmalloc failed, lets dig into swap here
*/
- *flags = 0;
gfp_flags &= ~__GFP_NORETRY;
buffer = (char *)__get_free_pages(gfp_flags, order);
if (buffer)
goto out;
for (i = 0; i < block_nr; i++) {
- pg_vec[i].buffer = alloc_one_pg_vec_page(order,
- &pg_vec[i].flags);
+ pg_vec[i].buffer = alloc_one_pg_vec_page(order);
if (unlikely(!pg_vec[i].buffer))
goto out_free_pgvec;
}
out_free_pgvec:
free_pg_vec(pg_vec, order, block_nr);
- kfree(pg_vec);
pg_vec = NULL;
goto out;
}
void *kaddr = rb->pg_vec[i].buffer;
int pg_num;
- for (pg_num = 0; pg_num < rb->pg_vec_pages;
- pg_num++) {
- if (rb->pg_vec[i].flags & PGV_FROM_VMALLOC)
- page = vmalloc_to_page(kaddr);
- else
- page = virt_to_page(kaddr);
-
+ for (pg_num = 0; pg_num < rb->pg_vec_pages; pg_num++) {
+ page = pgv_to_page(kaddr);
err = vm_insert_page(vma, start, page);
if (unlikely(err))
goto out;
* will suddenly eat the receive_queue.
*
* Look at current nfs client by the way...
- * However, this function was corrent in any case. 8)
+ * However, this function was correct in any case. 8)
*/
if (flags & MSG_PEEK) {
spin_lock_bh(&sk->sk_receive_queue.lock);
sock_wfree(skb);
}
+#define MAX_RECURSION_LEVEL 4
+
static int unix_attach_fds(struct scm_cookie *scm, struct sk_buff *skb)
{
int i;
+ unsigned char max_level = 0;
+ int unix_sock_count = 0;
+
+ for (i = scm->fp->count - 1; i >= 0; i--) {
+ struct sock *sk = unix_get_socket(scm->fp->fp[i]);
+
+ if (sk) {
+ unix_sock_count++;
+ max_level = max(max_level,
+ unix_sk(sk)->recursion_level);
+ }
+ }
+ if (unlikely(max_level > MAX_RECURSION_LEVEL))
+ return -ETOOMANYREFS;
/*
* Need to duplicate file references for the sake of garbage
if (!UNIXCB(skb).fp)
return -ENOMEM;
- for (i = scm->fp->count-1; i >= 0; i--)
- unix_inflight(scm->fp->fp[i]);
- return 0;
+ if (unix_sock_count) {
+ for (i = scm->fp->count - 1; i >= 0; i--)
+ unix_inflight(scm->fp->fp[i]);
+ }
+ return max_level;
}
static int unix_scm_to_skb(struct scm_cookie *scm, struct sk_buff *skb, bool send_fds)
struct sk_buff *skb;
long timeo;
struct scm_cookie tmp_scm;
+ int max_level;
if (NULL == siocb->scm)
siocb->scm = &tmp_scm;
goto out;
err = unix_scm_to_skb(siocb->scm, skb, true);
- if (err)
+ if (err < 0)
goto out_free;
+ max_level = err + 1;
unix_get_secdata(siocb->scm, skb);
skb_reset_transport_header(skb);
if (sock_flag(other, SOCK_RCVTSTAMP))
__net_timestamp(skb);
skb_queue_tail(&other->sk_receive_queue, skb);
+ if (max_level > unix_sk(other)->recursion_level)
+ unix_sk(other)->recursion_level = max_level;
unix_state_unlock(other);
other->sk_data_ready(other, len);
sock_put(other);
int sent = 0;
struct scm_cookie tmp_scm;
bool fds_sent = false;
+ int max_level;
if (NULL == siocb->scm)
siocb->scm = &tmp_scm;
/* Only send the fds in the first buffer */
err = unix_scm_to_skb(siocb->scm, skb, !fds_sent);
- if (err) {
+ if (err < 0) {
kfree_skb(skb);
goto out_err;
}
+ max_level = err + 1;
fds_sent = true;
err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
goto pipe_err_free;
skb_queue_tail(&other->sk_receive_queue, skb);
+ if (max_level > unix_sk(other)->recursion_level)
+ unix_sk(other)->recursion_level = max_level;
unix_state_unlock(other);
other->sk_data_ready(other, size);
sent += size;
unix_state_lock(sk);
skb = skb_dequeue(&sk->sk_receive_queue);
if (skb == NULL) {
+ unix_sk(sk)->recursion_level = 0;
if (copied >= target)
goto unlock;
unsigned int unix_tot_inflight;
-static struct sock *unix_get_socket(struct file *filp)
+struct sock *unix_get_socket(struct file *filp)
{
struct sock *u_sock = NULL;
struct inode *inode = filp->f_path.dentry->d_inode;
}
static bool gc_in_progress = false;
+#define UNIX_INFLIGHT_TRIGGER_GC 16000
void wait_for_unix_gc(void)
{
+ /*
+ * If number of inflight sockets is insane,
+ * force a garbage collect right now.
+ */
+ if (unix_tot_inflight > UNIX_INFLIGHT_TRIGGER_GC && !gc_in_progress)
+ unix_gc();
wait_event(unix_gc_wait, gc_in_progress == false);
}
list_for_each_safe(entry, tmp, &x25_neigh_list) {
nb = list_entry(entry, struct x25_neigh, node);
__x25_remove_neigh(nb);
+ dev_put(nb->dev);
}
write_unlock_bh(&x25_neigh_list_lock);
}
if (sz <= PAGE_SIZE)
n = kzalloc(sz, GFP_KERNEL);
else if (hashdist)
- n = __vmalloc(sz, GFP_KERNEL | __GFP_ZERO, PAGE_KERNEL);
+ n = vzalloc(sz);
else
n = (struct hlist_head *)
__get_free_pages(GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO,
}
xdst->route = dst;
- memcpy(&dst1->metrics, &dst->metrics, sizeof(dst->metrics));
+ dst_copy_metrics(dst1, dst);
if (xfrm[i]->props.mode != XFRM_MODE_TRANSPORT) {
family = xfrm[i]->props.family;
if (pmtu > route_mtu_cached)
pmtu = route_mtu_cached;
- dst->metrics[RTAX_MTU-1] = pmtu;
+ dst_metric_set(dst, RTAX_MTU, pmtu);
} while ((dst = dst->next));
}
mtu = xfrm_state_mtu(dst->xfrm, mtu);
if (mtu > last->route_mtu_cached)
mtu = last->route_mtu_cached;
- dst->metrics[RTAX_MTU-1] = mtu;
+ dst_metric_set(dst, RTAX_MTU, mtu);
if (last == first)
break;
projects / mv-sheeva.git / commitdiff