Alexander Aring [Mon, 2 Mar 2015 14:10:04 +0000 (15:10 +0100)]
ieee802154: change wpan-phy name to phy
Currently the wpan_phy under /sys/class/ieee802154/ is named as
"wpan-phy#", this patch will change the name to phy. This will
introduce the same naming convention like wireless.
Note: wpan-tools users will not type "wpan-phy#" anymore, just a simple
"phy#" is enough.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Mon, 2 Mar 2015 14:10:03 +0000 (15:10 +0100)]
ieee802154: 6lowpan: fix ARPHRD to ARPHRD_6LOWPAN
Currently there exists two interface types with ARPHRD_IEEE802154. These
are the 802.15.4 interfaces and 802.15.4 6LoWPAN interfaces. This is
more a bug because some userspace applications checks on this value like
wireshark. This occurs that wireshark will always try to parse a lowpan
interface as 802.15.4 frames. With ARPHRD_6LOWPAN wireshark will parse
it as IPv6 frames which is correct.
Much applications checks on this value to readout the EUI64 mac address
which should be the same for ARPHRD_6LOWPAN. BTLE 6LoWPAN and ieee802154
6LoWPAN will share now the same ARPHRD.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Fri, 13 Mar 2015 17:20:35 +0000 (10:20 -0700)]
Bluetooth: Merge hdev->dbg_flags fields into hdev->dev_flags
With the extension of hdev->dev_flags utilizing a bitmap now, the space
is no longer restricted. Merge the hdev->dbg_flags into hdev->dev_flags
to save space on 64-bit architectures. On 32-bit architectures no size
reduction happens.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Daniel Drake [Tue, 24 Feb 2015 00:16:47 +0000 (18:16 -0600)]
Bluetooth: btusb: Add helper for READ_LOCAL_VERSION command
Multiple codepaths duplicate some simple code to read and
sanity-check local version information. Before I add a couple more
such codepaths, add a helper to reduce duplication.
Signed-off-by: Daniel Drake <drake@endlessm.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Marcel Holtmann [Fri, 13 Mar 2015 05:30:58 +0000 (22:30 -0700)]
Bluetooth: Add support connectable advertising setting
The patch adds a second advertising setting that allows switching of the
controller into connectable mode independent of the global connectable
setting.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Johan Hedberg [Wed, 11 Mar 2015 08:52:08 +0000 (10:52 +0200)]
Bluetooth: Check for matching IRK when looking for paired LE devices
If we're given an RPA when checking whether we're paired or not, we
should consult the local RPA storage whether there's a matching IRK.
This we we ensure that hci_bdaddr_is_paired() gives the right result
even when trying to pair a second time with the same device with an RPA.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Wed, 11 Mar 2015 06:55:51 +0000 (08:55 +0200)]
Bluetooth: Fix missing rcu_read_unlock() in hci_bdaddr_is_paired()
When finding a matching LTK the rcu_read_unlock() function was failing
to release the RCU read lock. This patch adds the missing call to
rcu_reaD_unlock().
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Bluetooth: btusb: Fix incorrect type in qca_device_info
While qca_device_info is not coming from outside communication,
no reason to use specific endian type inside and fix the wrong
version comparison on big-endian platform.
Signed-off-by: Ben Young Tae Kim <ytkim@qca.qualcomm.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Tue, 10 Mar 2015 20:34:40 +0000 (22:34 +0200)]
Bluetooth: Add 'Already Paired' error for Pair Device command
To make the behavior predictable when attempting to pair with a device
for which we already have a Link Key or Long Term Key, this patch adds a
new 'Already Paired' error which gets sent in such a scenario.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Tue, 10 Mar 2015 18:14:27 +0000 (20:14 +0200)]
Bluetooth: Make Fast Connectable available while powered off
To maximize the usability of the Fast Connectable feature we should make
it possible to set (or unset) it at any given moment. This means
removing the dependency on the 'connectable' setting as well as the
'powered' setting. The former makes also sense since page scan may get
enabled through add_device even if 'connectable' is false. To keep the
setting available over power cycles its flag also needs to be removed
from the flags that are cleared upon HCI_Reset.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sat, 7 Mar 2015 19:52:28 +0000 (20:52 +0100)]
Bluetooth: fix sco_exit compile warning
While compiling the following warning occurs:
WARNING: net/built-in.o(.init.text+0x602c): Section mismatch in
reference from the function bt_init() to the function
.exit.text:sco_exit()
The function __init bt_init() references
a function __exit sco_exit().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
sco_exit() so it may be used outside an exit section.
Since commit 6d785aa345f525e1fdf098b7c590168f0b00f3f1 ("Bluetooth:
Convert mgmt to use HCI chan registration API") the function "sco_exit"
is used inside of function "bt_init". The suggested solution by remove
the __exit annotation solved this issue.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Johan Hedberg [Fri, 6 Mar 2015 19:08:56 +0000 (21:08 +0200)]
Bluetooth: Add mgmt_send_event() helper to send to any HCI channel
Currently the mgmt_event() function is only capable of sending to
HCI_CHANNEL_CONTROL. To void having to change all users of it, add a new
mgmt_send_event() function that takes a channel parameter, and make the
old mgmt_event() a wrapper that passes MGMT_CHANNEL_CONTROL to it.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Fri, 6 Mar 2015 19:08:55 +0000 (21:08 +0200)]
Bluetooth: Rename pending_cmd to mgmt_pending_cmd
This patch renames the pending_cmd struct (used for tracking pending mgmt
commands) to mgmt_pending_cmd, so that it can be moved to a more generic
place and be used also by other modules using other HCI channels.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Fri, 6 Mar 2015 19:08:52 +0000 (21:08 +0200)]
Bluetooth: Move all mgmt command quirks to handler table
In order to completely generalize the mgmt command handling we need to
move away command-specific information from mgmt_control() into the
actual command table. This patch adds a new 'flags' field to the handler
entries which can now contain the following command specific
information:
- Command takes variable length parameters
- Command doesn't target any specific HCI device
- Command can be sent when the HCI device is unconfigured
After this the mgmt_control() function is completely generic and can
potentially be reused by new HCI channels.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Johan Hedberg [Fri, 6 Mar 2015 19:08:50 +0000 (21:08 +0200)]
Bluetooth: Add mgmt HCI channel registration API
This patch adds an API for registering HCI channels with mgmt-like
semantics. For now the only user will be HCI_CHANNEL_CONTROL, but e.g.
6lowpan is intended to use this as well in the future.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Marcel Holtmann [Fri, 6 Mar 2015 18:11:21 +0000 (10:11 -0800)]
Bluetooth: Introduce controller setting information for static address
Currently it is not possible to determine if the static address is used
by the controller. It is also not possible to determine if using a
static on a dual-mode controller with disabled BR/EDR is possible or
not.
To address this issue, introduce a new setting called static-address. If
support for this setting is signaled that means that the kernel supports
using static addresses. And if used on dual-mode controllers with BR/EDR
disabled it means that a configured static address can be used.
In addition utilize the same setting for the list of current active
settings that indicates if a static address is configured and if that
address will be actually used.
With this in mind the existing Set Static Address management command
has been extended to return the current settings. That way the caller
of that command can easily determine if the programmed address will
be used or if extra steps are required.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Jakub Pawlowski [Thu, 5 Mar 2015 00:24:26 +0000 (16:24 -0800)]
Bluetooth: fix service discovery behaviour for empty uuids filter
This patch fixes service discovery behaviour, when provided uuid filter
is empty and HCI_QUIRK_STRICT_DUPLICATE_FILTER is set. Before this
patch, empty uuid filter was unable to trigger scan restart, and that
caused inconsistent behaviour in applications.
Example: two DBus clients call BlueZ, one to find all devices with
service abcd, second to find all devices with rssi smaller than -90.
Sum of those filters, that is passed to mgmt_service_scan is empty
filter, with no rssi or uuids set.
That caused kernel not to restart scan when quirk was set.
That was inconsistent with what happen when there's only one of those
two filters set (scan is restarted and reports devices).
To fix that, new variable hdev->discovery.result_filtering was
introduced. It can indicate that filtered scan is running, no matter
what uuid or rssi filter is set.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Jakub Pawlowski [Thu, 5 Mar 2015 00:24:25 +0000 (16:24 -0800)]
Bluetooth: Refactor service discovery filter logic
This patch refactor code responsible for filtering when service
discovery method is used. Previously this code was mixed with
mgmt_device found logic. Now when it's in one place whole logic can
be greatly simplified. That includes removing no longer necessary
length field and merging checks for eir and scan_rsp.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Jakub Pawlowski [Thu, 5 Mar 2015 00:24:24 +0000 (16:24 -0800)]
Bluetooth: Move Service Discovery logic before refactoring
This patch moves whole packet filering logic of service discovery
into new function is_filter_match. It's done because logic inside
mgmt_device_found is very complicated and needs some
simplification.
Also having whole logic in one place will allow to simplify it in
the future.
Signed-off-by: Jakub Pawlowski <jpawlowski@google.com> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Alexander Aring [Sun, 1 Mar 2015 20:55:33 +0000 (21:55 +0100)]
at86rf230: restore trx len when needed
In the most cases the spi messages has a length of two. Currently we
always set the the len field to two before transmit a spi message. In
cases for read out/write in the frame buffer we need another len. This
patch use trx len two as default. For the frame buffer cases we restore
the trx len to two on success and failure. This will reduce the len
setting of two when it's already two.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 1 Mar 2015 20:55:32 +0000 (21:55 +0100)]
at86rf230: remove multiple dereferencing for ctx
This patch cleanups the referencing for the state change context
variable. The state change context should only set once and this is by
initial a state change. This patch will use the initial state change
variable in the complete handler of the state change by using the ctx
context which should be always the same like the initial state change
context.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 1 Mar 2015 20:55:29 +0000 (21:55 +0100)]
at86rf230: cleanup and squash stack variable
I had this variable because I thought it would be protected by
disable/enable irq but this is not true. It's protected by stop/wake
netdev queue which is called by ieee802154_xmit_complete.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Sun, 1 Mar 2015 20:55:28 +0000 (21:55 +0100)]
at86rf230: add transmit retry support
This patch introduce a transmit retry handling into at86rf230 transmit
path. Current behaviour is to wait the normal receive time if we want
to go into STATE_TX_ON when the transceiver is in STATE_BUSY_RX_AACK
which indicates that a frame is currently receiving. A non force state
change will not interrupt the the receiving state.
The current behaviour is that after the normal receive time we will
start a force change into STATE_TX_ON. With this patch we do seven
retries to go into STATE_TX_ON without forcing. After we hit the
AT86RF2XX_MAX_TX_RETRIES we will start the force state change.
This is a polling like method to go into STATE_TX_ON in times of maximum
receiving time.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Bluetooth: btusb: Add support for QCA ROME chipset family
This patch supports ROME Bluetooth family from Qualcomm Atheros,
e.g. QCA61x4 or QCA6574.
New chipset have similar firmware downloading sequences to previous
chipset from Atheros, however, it doesn't support vid/pid switching
after downloading the patch so that firmware needs to be handled by
btusb module directly.
ROME chipset can be differentiated from previous version by reading
ROM version.
Bluetooth: btusb: Add setup callback for chip init on USB
Some of chipset does not allow to send a patch or config files through
HCI VS channel at early stage as well as they don't support to send
USB patch files to other channel except USB bulk path.
New callback added is for initialization of BT controller through USB
Signed-off-by: Ben Young Tae Kim <ytkim@qca.qualcomm.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Daniel Borkmann [Mon, 2 Mar 2015 11:25:51 +0000 (12:25 +0100)]
filter: refactor common filter attach code into __sk_attach_prog
Both sk_attach_filter() and sk_attach_bpf() are setting up sk_filter,
charging skmem and attaching it to the socket after we got the eBPF
prog up and ready. Lets refactor that into a common helper.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Here's the first bluetooth-next pull request targeting the 4.1 kernel:
- ieee802154/6lowpan cleanups
- SCO routing to host interface support for the btmrvl driver
- AMP code cleanups
- Fixes to AMP HCI init sequence
- Refactoring of the HCI callback mechanism
- Added shutdown routine for Intel controllers in the btusb driver
- New config option to enable/disable Bluetooth debugfs information
- Fix for early data reception on L2CAP fixed channels
Please let me know if there are any issues pulling. Thanks.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 2 Mar 2015 18:06:38 +0000 (13:06 -0500)]
Merge branch 'sendmsg_recvmsg_iocb_removal'
Ying Xue says:
====================
net: Remove iocb argument from sendmsg and recvmsg
Currently there is only one user - TIPC whose sendmsg() instances
using iocb argument. Meanwhile, there is no user using iocb argument
in its recvmsg() instance. Therefore, if we eliminate the werid usage
of iobc argument from TIPC, the iocb argument can be removed from
all sendmsg() and recvmsg() instances of the whole networking stack.
Ying Xue [Mon, 2 Mar 2015 07:37:48 +0000 (15:37 +0800)]
net: Remove iocb argument from sendmsg and recvmsg
After TIPC doesn't depend on iocb argument in its internal
implementations of sendmsg() and recvmsg() hooks defined in proto
structure, no any user is using iocb argument in them at all now.
Then we can drop the redundant iocb argument completely from kinds of
implementations of both sendmsg() and recvmsg() in the entire
networking stack.
Cc: Christoph Hellwig <hch@lst.de> Suggested-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ying Xue [Mon, 2 Mar 2015 07:37:47 +0000 (15:37 +0800)]
tipc: Don't use iocb argument in socket layer
Currently the iocb argument is used to idenfiy whether or not socket
lock is hold before tipc_sendmsg()/tipc_send_stream() is called. But
this usage prevents iocb argument from being dropped through sendmsg()
at socket common layer. Therefore, in the commit we introduce two new
functions called __tipc_sendmsg() and __tipc_send_stream(). When they
are invoked, it assumes that their callers have taken socket lock,
thereby avoiding the weird usage of iocb argument.
Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Reviewed-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 2 Mar 2015 05:19:35 +0000 (00:19 -0500)]
Merge branch 'dropcount'
Eyal Birger says:
====================
net: move skb->dropcount to skb->cb[]
Commit 977750076d98 ("af_packet: add interframe drop cmsg (v6)")
unionized skb->mark and skb->dropcount in order to allow recording
of the socket drop count while maintaining struct sk_buff size.
skb->dropcount was introduced since there was no available room
in skb->cb[] in packet sockets. However, its introduction led to
the inability to export skb->mark to userspace.
It was considered to alias skb->priority instead of skb->mark.
However, that would lead to the inabilty to export skb->priority
to userspace if desired. Such change may also lead to hard-to-find
issues as skb->priority is assumed to be alias free, and, as noted
by Shmulik Ladkani, is not 'naturally orthogonal' with other skb
fields.
This patch series follows the suggestions made by Eric Dumazet moving
the dropcount metric to skb->cb[], eliminating this problem
at the expense of 4 bytes less in skb->cb[] for protocol families
using it.
The patch series include compactization of bluetooth and packet
use of skb->cb[] as well as the infrastructure for placing dropcount
in skb->cb[].
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eyal Birger [Sun, 1 Mar 2015 12:58:31 +0000 (14:58 +0200)]
net: move skb->dropcount to skb->cb[]
Commit 977750076d98 ("af_packet: add interframe drop cmsg (v6)")
unionized skb->mark and skb->dropcount in order to allow recording
of the socket drop count while maintaining struct sk_buff size.
skb->dropcount was introduced since there was no available room
in skb->cb[] in packet sockets. However, its introduction led to
the inability to export skb->mark, or any other aliased field to
userspace if so desired.
Moving the dropcount metric to skb->cb[] eliminates this problem
at the expense of 4 bytes less in skb->cb[] for protocol families
using it.
Signed-off-by: Eyal Birger <eyal.birger@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eyal Birger [Sun, 1 Mar 2015 12:58:29 +0000 (14:58 +0200)]
net: use common macro for assering skb->cb[] available size in protocol families
As part of an effort to move skb->dropcount to skb->cb[] use a common
macro in protocol families using skb->cb[] for ancillary data to
validate available room in skb->cb[].
Signed-off-by: Eyal Birger <eyal.birger@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eyal Birger [Sun, 1 Mar 2015 12:58:27 +0000 (14:58 +0200)]
net: rxrpc: change call to sock_recv_ts_and_drops() on rxrpc recvmsg to sock_recv_timestamp()
Commit 3b885787ea4112 ("net: Generalize socket rx gap / receive queue overflow cmsg")
allowed receiving packet dropcount information as a socket level option.
RXRPC sockets recvmsg function was changed to support this by calling
sock_recv_ts_and_drops() instead of sock_recv_timestamp().
However, protocol families wishing to receive dropcount should call
sock_queue_rcv_skb() or set the dropcount specifically (as done
in packet_rcv()). This was not done for rxrpc and thus this feature
never worked on these sockets.
Formalizing this by not calling sock_recv_ts_and_drops() in rxrpc as
part of an effort to move skb->dropcount into skb->cb[]
Signed-off-by: Eyal Birger <eyal.birger@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eyal Birger [Sun, 1 Mar 2015 12:58:26 +0000 (14:58 +0200)]
net: bluetooth: compact struct bt_skb_cb by converting boolean fields to bit fields
Convert boolean fields incoming and req_start to bit fields and move
force_active in order save space in bt_skb_cb in an effort to use
a portion of skb->cb[] for storing skb->dropcount.
Signed-off-by: Eyal Birger <eyal.birger@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eyal Birger [Sun, 1 Mar 2015 12:58:25 +0000 (14:58 +0200)]
net: bluetooth: compact struct bt_skb_cb by inlining struct hci_req_ctrl
struct hci_req_ctrl is never used outside of struct bt_skb_cb;
Inlining it frees 8 bytes on a 64 bit system in skb->cb[] allowing
the addition of more ancillary data.
Signed-off-by: Eyal Birger <eyal.birger@gmail.com> Reviewed-by: Shmulik Ladkani <shmulik.ladkani@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
pppoe: Use workqueue to die properly when a PADT is received
When a PADT frame is received, the socket may not be in a good state to
close down the PPP interface. The current implementation handles this by
simply blocking all further PPP traffic, and hoping that the lack of traffic
will trigger the user to investigate.
Use schedule_work to get to a process context from which we clear down the
PPP interface, in a fashion analogous to hangup on a TTY-based PPP
interface. This causes pppd to disconnect immediately, and allows tools to
take immediate corrective action.
Note that pppd's rp_pppoe.so plugin has code in it to disable the session
when it disconnects; however, as a consequence of this patch, the session is
already disabled before rp_pppoe.so is asked to disable the session. The
result is a harmless error message:
Failed to disconnect PPPoE socket: 114 Operation already in progress
This message is safe to ignore, as long as the error is 114 Operation
already in progress; in that specific case, it means that the PPPoE session
has already been disabled before pppd tried to disable it.
Signed-off-by: Simon Farnsworth <simon@farnz.org.uk> Tested-by: Dan Williams <dcbw@redhat.com> Tested-by: Christoph Schulz <develop@kristov.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Vecera [Thu, 26 Feb 2015 13:48:07 +0000 (14:48 +0100)]
bnx2: disable toggling of rxvlan if necessary
The bnx2 driver uses .ndo_fix_features to force enable of Rx VLAN tag
stripping when the card cannot disable it. The driver should remove
NETIF_F_HW_VLAN_CTAG_RX flag from hw_features instead so it is fixed
for the ethtool.
Cc: Sony Chacko <sony.chacko@qlogic.com> Cc: Dept-HSGLinuxNICDev@qlogic.com Signed-off-by: Ivan Vecera <ivecera@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Arun Chandran [Sun, 1 Mar 2015 06:08:03 +0000 (11:38 +0530)]
net: macb: Properly add DMACFG bit definitions
Add *_SIZE macros for the bits ENDIA_DESC and
ENDIA_PKT
Signed-off-by: Arun Chandran <achandran@mvista.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Arun Chandran [Sun, 1 Mar 2015 06:08:02 +0000 (11:38 +0530)]
net: macb: Add on the fly CPU endianness detection
Program management descriptor's access mode according to the
dynamically detected CPU endianness.
Signed-off-by: Arun Chandran <achandran@mvista.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Driver: Vmxnet3: Copy TCP header to mapped frame for IPv6 packets
Allows for packet parsing to be done by the fast path. This performance
optimization already exists for IPv4. Add similar logic for IPv6.
Signed-off-by: Amitabha Banerjee <banerjeea@vmware.com> Signed-off-by: Shrikrishna Khare <skhare@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 1 Mar 2015 19:05:24 +0000 (14:05 -0500)]
Merge branch 'ebpf_support_for_cls_bpf'
Daniel Borkmann says:
====================
eBPF support for cls_bpf
This is the non-RFC version of my patchset posted before netdev01 [1]
conference. It contains a couple of eBPF cleanups and preparation
patches to get eBPF support into cls_bpf. The last patch adds the
actual support. I'll post the iproute2 parts after the kernel bits
are merged, an initial preview link to the code is mentioned in the
last patch.
Patch 4 and 5 were originally one patch, but I've split them into
two parts upon request as patch 4 only is also needed for Alexei's
tracing patches that go via tip tree.
Tested with tc and all in-kernel available BPF test suites.
I have configured and built LLVM with --enable-experimental-targets=BPF
but as Alexei put it, the plan is to get rid of the experimental
status in future [2].
Thanks a lot!
v1 -> v2:
- Removed arch patches from this series
- x86 is already queued in tip tree, under x86/mm
- arm64 just reposted directly to arm folks
- Rest is unchanged
Daniel Borkmann [Sun, 1 Mar 2015 11:31:48 +0000 (12:31 +0100)]
cls_bpf: add initial eBPF support for programmable classifiers
This work extends the "classic" BPF programmable tc classifier by
extending its scope also to native eBPF code!
This allows for user space to implement own custom, 'safe' C like
classifiers (or whatever other frontend language LLVM et al may
provide in future), that can then be compiled with the LLVM eBPF
backend to an eBPF elf file. The result of this can be loaded into
the kernel via iproute2's tc. In the kernel, they can be JITed on
major archs and thus run in native performance.
Simple, minimal toy example to demonstrate the workflow:
As it has been demonstrated, the scope can even reach up to a fully
fledged flow dissector (similarly as in samples/bpf/sockex2_kern.c).
For tc, maps are allowed to be used, but from kernel context only,
in other words, eBPF code can keep state across filter invocations.
In future, we perhaps may reattach from a different application to
those maps e.g., to read out collected statistics/state.
Similarly as in socket filters, we may extend functionality for eBPF
classifiers over time depending on the use cases. For that purpose,
cls_bpf programs are using BPF_PROG_TYPE_SCHED_CLS program type, so
we can allow additional functions/accessors (e.g. an ABI compatible
offset translation to skb fields/metadata). For an initial cls_bpf
support, we allow the same set of helper functions as eBPF socket
filters, but we could diverge at some point in time w/o problem.
I was wondering whether cls_bpf and act_bpf could share C programs,
I can imagine that at some point, we introduce i) further common
handlers for both (or even beyond their scope), and/or if truly needed
ii) some restricted function space for each of them. Both can be
abstracted easily through struct bpf_verifier_ops in future.
The context of cls_bpf versus act_bpf is slightly different though:
a cls_bpf program will return a specific classid whereas act_bpf a
drop/non-drop return code, latter may also in future mangle skbs.
That said, we can surely have a "classify" and "action" section in
a single object file, or considered mentioned constraint add a
possibility of a shared section.
The workflow for getting native eBPF running from tc [1] is as
follows: for f_bpf, I've added a slightly modified ELF parser code
from Alexei's kernel sample, which reads out the LLVM compiled
object, sets up maps (and dynamically fixes up map fds) if any, and
loads the eBPF instructions all centrally through the bpf syscall.
The resulting fd from the loaded program itself is being passed down
to cls_bpf, which looks up struct bpf_prog from the fd store, and
holds reference, so that it stays available also after tc program
lifetime. On tc filter destruction, it will then drop its reference.
Moreover, I've also added the optional possibility to annotate an
eBPF filter with a name (e.g. path to object file, or something
else if preferred) so that when tc dumps currently installed filters,
some more context can be given to an admin for a given instance (as
opposed to just the file descriptor number).
Last but not least, bpf_prog_get() and bpf_prog_put() needed to be
exported, so that eBPF can be used from cls_bpf built as a module.
Thanks to 60a3b2253c41 ("net: bpf: make eBPF interpreter images
read-only") I think this is of no concern since anything wanting to
alter eBPF opcode after verification stage would crash the kernel.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sun, 1 Mar 2015 11:31:47 +0000 (12:31 +0100)]
ebpf: move read-only fields to bpf_prog and shrink bpf_prog_aux
is_gpl_compatible and prog_type should be moved directly into bpf_prog
as they stay immutable during bpf_prog's lifetime, are core attributes
and they can be locked as read-only later on via bpf_prog_select_runtime().
With a bit of rearranging, this also allows us to shrink bpf_prog_aux
to exactly 1 cacheline.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sun, 1 Mar 2015 11:31:46 +0000 (12:31 +0100)]
ebpf: add sched_cls_type and map it to sk_filter's verifier ops
As discussed recently and at netconf/netdev01, we want to prevent making
bpf_verifier_ops registration available for modules, but have them at a
controlled place inside the kernel instead.
The reason for this is, that out-of-tree modules can go crazy and define
and register any verfifier ops they want, doing all sorts of crap, even
bypassing available GPLed eBPF helper functions. We don't want to offer
such a shiny playground, of course, but keep strict control to ourselves
inside the core kernel.
This also encourages us to design eBPF user helpers carefully and
generically, so they can be shared among various subsystems using eBPF.
For the eBPF traffic classifier (cls_bpf), it's a good start to share
the same helper facilities as we currently do in eBPF for socket filters.
That way, we have BPF_PROG_TYPE_SCHED_CLS look like it's own type, thus
one day if there's a good reason to diverge the set of helper functions
from the set available to socket filters, we keep ABI compatibility.
In future, we could place all bpf_prog_type_list at a central place,
perhaps.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sun, 1 Mar 2015 11:31:45 +0000 (12:31 +0100)]
ebpf: remove CONFIG_BPF_SYSCALL ifdefs in socket filter code
This gets rid of CONFIG_BPF_SYSCALL ifdefs in the socket filter code,
now that the BPF internal header can deal with it.
While going over it, I also changed eBPF related functions to a sk_filter
prefix to be more consistent with the rest of the file.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sun, 1 Mar 2015 11:31:44 +0000 (12:31 +0100)]
ebpf: make internal bpf API independent of CONFIG_BPF_SYSCALL ifdefs
Socket filter code and other subsystems with upcoming eBPF support should
not need to deal with the fact that we have CONFIG_BPF_SYSCALL defined or
not.
Having the bpf syscall as a config option is a nice thing and I'd expect
it to stay that way for expert users (I presume one day the default setting
of it might change, though), but code making use of it should not care if
it's actually enabled or not.
Instead, hide this via header files and let the rest deal with it.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sun, 1 Mar 2015 11:31:43 +0000 (12:31 +0100)]
ebpf: export BPF_PSEUDO_MAP_FD to uapi
We need to export BPF_PSEUDO_MAP_FD to user space, as it's used in the
ELF BPF loader where instructions are being loaded that need map fixups.
An initial stage loads all maps into the kernel, and later on replaces
related instructions in the eBPF blob with BPF_PSEUDO_MAP_FD as source
register and the actual fd as immediate value.
The kernel verifier recognizes this keyword and replaces the map fd with
a real pointer internally.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sun, 1 Mar 2015 11:31:42 +0000 (12:31 +0100)]
ebpf: constify various function pointer structs
We can move bpf_map_ops and bpf_verifier_ops and other structs into ro
section, bpf_map_type_list and bpf_prog_type_list into read mostly.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sun, 1 Mar 2015 11:31:41 +0000 (12:31 +0100)]
ebpf: remove kernel test stubs
Now that we have BPF_PROG_TYPE_SOCKET_FILTER up and running, we can
remove the test stubs which were added to get the verifier suite up.
We can just let the test cases probe under socket filter type instead.
In the fill/spill test case, we cannot (yet) access fields from the
context (skb), but we may adapt that test case in future.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
remove Frank Blaschka as S390 NETWORK DRIVERS maintainer
Acked-by: Frank Blaschka <blaschka@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Stefan Raspl [Fri, 27 Feb 2015 11:52:33 +0000 (12:52 +0100)]
qeth: Fix command sizes
This patch adjusts two instances where we were using the (too big)
struct qeth_ipacmd_setadpparms size instead of the commands' actual
size. This didn't do any harm, but wasted a few bytes.
Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This adds support for reporting the actual and maximum combined channels
count of the hv_netvsc driver via 'ethtool --show-channels'.
This required adding 'max_chn' to 'struct netvsc_device', and assigning
it 'rsscap.num_recv_que' in 'rndis_filter_device_add'. Now we can access
the combined maximum channel count via 'struct netvsc_device' in the
ethtool callback.
Signed-off-by: Andrew Schwartzmeyer <andrew@schwartzmeyer.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 26 Feb 2015 22:10:20 +0000 (14:10 -0800)]
tcp: tso: allow CA_CWR state in tcp_tso_should_defer()
Another TCP issue is triggered by ECN.
Under pressure, receiver gets ECN marks, and send back ACK packets
with ECE TCP flag. Senders enter CA_CWR state.
In this state, tcp_tso_should_defer() is short cut :
if (icsk->icsk_ca_state != TCP_CA_Open)
goto send_now;
This means that about all ACK packets we receive are triggering
a partial send, and because cwnd is kept small, we can only send
a small amount of data for each incoming ACK,
which in return generate more ACK packets.
Allowing CA_Open and CA_CWR states to enable TSO defer in
tcp_tso_should_defer() brings performance back :
TSO autodefer has more chance to defer under pressure.
This patch increases TSO and LRO/GRO efficiency back to normal levels,
and does not impact overall ECN behavior.
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 26 Feb 2015 22:10:19 +0000 (14:10 -0800)]
tcp: tso: restore IW10 after TSO autosizing
With sysctl_tcp_min_tso_segs being 4, it is very possible
that tcp_tso_should_defer() decides not sending last 2 MSS
of initial window of 10 packets. This also applies if
autosizing decides to send X MSS per GSO packet, and cwnd
is not a multiple of X.
This patch implements an heuristic based on age of first
skb in write queue : If it was sent very recently (less than half srtt),
we can predict that no ACK packet will come in less than half rtt,
so deferring might cause an under utilization of our window.
This is visible on initial send (IW10) on web servers,
but more generally on some RPC, as the last part of the message
might need an extra RTT to get delivered.
Tested:
Ran following packetdrill test
// A simple server-side test that sends exactly an initial window (IW10)
// worth of packets.
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 26 Feb 2015 22:10:18 +0000 (14:10 -0800)]
tcp: tso: remove tp->tso_deferred
TSO relies on ability to defer sending a small amount of packets.
Heuristic is to wait for future ACKS in hope to send more packets at once.
Current algorithm uses a per socket tso_deferred field as a pseudo timer.
This pseudo timer relies on future ACK, but there is no guarantee
we receive them in time.
Fix would be to use a real timer, but cost of such timer is probably too
expensive for typical cases.
This patch changes the logic to test the time of last transmit,
because we should not add bursts of more than 1ms for any given flow.
We've used this patch for about two years at Google, before FQ/pacing
as it would reduce a fair amount of bursts.
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ben Hutchings [Thu, 26 Feb 2015 19:34:37 +0000 (19:34 +0000)]
usbnet: Fix tx_packets stat for FLAG_MULTI_FRAME drivers
Currently the usbnet core does not update the tx_packets statistic for
drivers with FLAG_MULTI_PACKET and there is no hook in the TX
completion path where they could do this.
cdc_ncm and dependent drivers are bumping tx_packets stat on the
transmit path while asix and sr9800 aren't updating it at all.
Add a packet count in struct skb_data so these drivers can fill it
in, initialise it to 1 for other drivers, and add the packet count
to the tx_packets statistic on completion.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Tested-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 27 Feb 2015 23:18:52 +0000 (18:18 -0500)]
Merge branch 'tipc-next'
Erik Hugne says:
====================
tipc: bug fix and some improvements
Most important is a fix for a nullptr exception that would occur when
name table subscriptions fail. The remaining patches are performance
improvements and cosmetic changes.
v2: remove unnecessary whitespace in patch #2
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Fri, 27 Feb 2015 07:56:58 +0000 (08:56 +0100)]
tipc: make media address offset a common define
With the exception of infiniband media which does not use media
offsets, the media address is always located at offset 4 in the
media info field as defined by the protocol, so we move the
definition to the generic bearer.h
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Fri, 27 Feb 2015 07:56:57 +0000 (08:56 +0100)]
tipc: rename media/msg related definitions
The TIPC_MEDIA_ADDR_SIZE and TIPC_MEDIA_ADDR_OFFSET names
are misleading, as they actually define the size and offset of
the whole media info field and not the address part. This patch
does not have any functional changes.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Fri, 27 Feb 2015 07:56:56 +0000 (08:56 +0100)]
tipc: purge links when bearer is disabled
If a bearer is disabled by manual intervention, all links over that
bearer should be purged, indicated with the 'shutting_down' flag.
Otherwise tipc will get confused if a new bearer is enabled using
a different media type.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Fri, 27 Feb 2015 07:56:55 +0000 (08:56 +0100)]
tipc: fix nullpointer bug when subscribing to events
If a subscription request is sent to a topology server
connection, and any error occurs (malformed request, oom
or limit reached) while processing this request, TIPC should
terminate the subscriber connection. While doing so, it tries
to access fields in an already freed (or never allocated)
subscription element leading to a nullpointer exception.
We fix this by removing the subscr_terminate function and
terminate the connection immediately upon any subscription
failure.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Erik Hugne [Fri, 27 Feb 2015 07:56:54 +0000 (08:56 +0100)]
tipc: only create header copy for name distr messages
The TIPC name distributor pushes topology updates to the cluster
neighbors. Currently this is done in a unicast manner, and the
skb holding the update is cloned for each cluster member. This
is unnecessary, as we only modify the destnode field in the header
so we change it to do pskb_copy instead.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Wed, 25 Feb 2015 18:52:11 +0000 (19:52 +0100)]
team: allow TSO being set on master
This patch allows TSO being set/unset on the master, so that GSO
segmentation is done after team layer.
Similar patch is present for bonding: b0ce3508b25e ("bonding: allow TSO being set on bonding master")
and bridge: f902e8812ef6 ("bridge: Add ability to enable TSO")
Suggested-by: Jiri Prochazka <jprochaz@redhat.com> Signed-off-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch set removes the leaf_info structure from the IPv4 fib_trie. The
general idea is that the leaf_info structure itself only held about 6
actual bits of data, beyond that it was mostly just waste. As such we can
drop the structure, move the 1 byte representing the prefix/suffix length
into the fib_alias and just link it all into one list.
My testing shows that this saves somewhere between 4 to 10ns depending on
the type of test performed. I'm suspecting that this represents 1 to 2 L1
cache misses saved per look-up.
One side effect of this change is that semantic_match_miss will now only
increment once per leaf instead of once per leaf_info miss. However the
stat is already skewed now that we perform a preliminary check on the leaf
as a part of the look-up.
I also have gone through and addressed a number of ordering issues in the
first patch since I had misread the behavior of list_add_tail.
I have since run some additional testing and verified the resulting lists
are in the same order when combining multiple prefix length and tos values
in a single leaf.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 25 Feb 2015 23:31:51 +0000 (15:31 -0800)]
fib_trie: Remove leaf_info
At this point the leaf_info hash is redundant. By adding the suffix length
to the fib_alias hash list we no longer have need of leaf_info as we can
determine the prefix length from fa_slen. So we can compress things by
dropping the leaf_info structure from fib_trie and instead directly connect
the leaves to the fib_alias hash list.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 25 Feb 2015 23:31:44 +0000 (15:31 -0800)]
fib_trie: Add slen to fib alias
Make use of an empty spot in the alias to store the suffix length so that
we don't need to pull that information from the leaf_info structure.
This patch also makes a slight change to the user statistics. Instead of
incrementing semantic_match_miss once per leaf_info miss we now just
increment it once per leaf if a match was not found.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 25 Feb 2015 23:31:37 +0000 (15:31 -0800)]
fib_trie: Replace plen with slen in leaf_info
This replaces the prefix length variable in the leaf_info structure with a
suffix length value, or host identifier length in bits. By doing this it
makes it easier to sort out since the tnodes and leaf are carrying this
value as well since it is compatible with the ->pos field in tnodes.
I also cleaned up one spot that had some list manipulation that could be
simplified. I basically updated it so that we just use hlist_add_head_rcu
instead of calling hlist_add_before_rcu on the first node in the list.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Wed, 25 Feb 2015 23:31:31 +0000 (15:31 -0800)]
fib_trie: Convert fib_alias to hlist from list
There isn't any advantage to having it as a list and by making it an hlist
we make the fib_alias more compatible with the list_info in terms of the
type of list used.
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 27 Feb 2015 21:25:30 +0000 (16:25 -0500)]
Merge branch 'ip_level_multicast_join_leave'
Madhu Challa says:
====================
Multicast group join/leave at ip level
This series enables configuring multicast group join/leave at ip level
by extending the "ip address" command.
It adds a new control socket mc_autojoin_sock and ifa_flag IFA_F_MCAUTOJOIN
to invoke the corresponding igmp group join/leave api.
Since the igmp group join/leave api takes the rtnl_lock the code had to
be refactored by adding a shim layer prefixed by __ that can be invoked
by code that already has the rtnl_lock. This way we avoid proliferation of
work queues.
The first patch in this series does the refactoring for igmp v6.
Its based on igmp v4 changes that were added by Eric Dumazet.
The second patch in this series does the group join/leave based on the
setting of the IFA_F_MCAUTOJOIN flag.
v5:
- addressed comments from Daniel Borkmann.
- removed blank line in patch 1/2
- removed unused variable, const arg in patch 2/2
v4:
- addressed comments from Yoshifuji Hideaki.
- Remove WARN_ON not needed because we return a value from v2.
- addressed comments from Daniel Borkmann.
- rename sock to mc_autojoin_sk
- ip_mc_config() pass ifa so it needs one less argument.
- igmp_net_{init|destroy}() use inet_ctl_sock_{create|destroy}
- inet_rtm_newaddr() change scope of ret.
- igmp_net_init() no need to initialize sock to NULL.
v3:
- addressed comments from David Miller.
- fixed indentation and local variable order.
v2:
- addressed comments from Eric Dumazet.
- removed workqueue and call __ip_mc_{join|leave}_group or
__ipv6_sock_mc_{join|drop}
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Madhu Challa [Wed, 25 Feb 2015 17:58:35 +0000 (09:58 -0800)]
multicast: Extend ip address command to enable multicast group join/leave on
Joining multicast group on ethernet level via "ip maddr" command would
not work if we have an Ethernet switch that does igmp snooping since
the switch would not replicate multicast packets on ports that did not
have IGMP reports for the multicast addresses.
Linux vxlan interfaces created via "ip link add vxlan" have the group option
that enables then to do the required join.
By extending ip address command with option "autojoin" we can get similar
functionality for openvswitch vxlan interfaces as well as other tunneling
mechanisms that need to receive multicast traffic. The kernel code is
structured similar to how the vxlan driver does a group join / leave.
example:
ip address add 224.1.1.10/24 dev eth5 autojoin
ip address del 224.1.1.10/24 dev eth5
Signed-off-by: Madhu Challa <challa@noironetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Madhu Challa [Wed, 25 Feb 2015 17:58:34 +0000 (09:58 -0800)]
igmp v6: add __ipv6_sock_mc_join and __ipv6_sock_mc_drop
Based on the igmp v4 changes from Eric Dumazet. 959d10f6bbf6("igmp: add __ip_mc_{join|leave}_group()")
These changes are needed to perform igmp v6 join/leave while
RTNL is held.
Make ipv6_sock_mc_join and ipv6_sock_mc_drop wrappers around
__ipv6_sock_mc_join and __ipv6_sock_mc_drop to avoid
proliferation of work queues.
Signed-off-by: Madhu Challa <challa@noironetworks.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tom Herbert [Tue, 24 Feb 2015 17:17:31 +0000 (09:17 -0800)]
udp: In udp_flow_src_port use random hash value if skb_get_hash fails
In the unlikely event that skb_get_hash is unable to deduce a hash
in udp_flow_src_port we use a consistent random value instead.
This is specified in GRE/UDP draft section 3.2.1:
https://tools.ietf.org/html/draft-ietf-tsvwg-gre-in-udp-encap-04
Signed-off-by: Tom Herbert <therbert@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Aring [Fri, 27 Feb 2015 08:58:30 +0000 (09:58 +0100)]
at86rf230: add warning if edge-triggered irq
While testing I experience a deadlock while using the at86rf233 on a
raspberry pi. The reason was an edge triggered gpio irq because the irq
triggered while irq was disabled. This issue doesn't happend on a level
triggered irq because the irq will hit after calling enable_irq.
This patch adds a warning that it's not recommended to use a edge-triggered
irq type. Also change the examples to high-level irqtype.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Fri, 27 Feb 2015 08:58:29 +0000 (09:58 +0100)]
at86rf230: add irq low-level for polarity
The at86rf2xx chips supports the setting of irq polarity if active low
or active high. This patch adds a handling for IRQ_ACTIVE_LOW if the
irq_type is IRQ_TYPE_LEVEL_LOW.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Fri, 27 Feb 2015 08:58:28 +0000 (09:58 +0100)]
at86rf230: add irqmask mode setting
Since we support at86rf233 we need to ensure that basic operation
default values are the same. This patch always sets IRQ_MASK_MODE to 0
which is after reset 1 at the at86rf233 and 0 at the at86rf231.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Alexander Aring [Fri, 27 Feb 2015 08:58:27 +0000 (09:58 +0100)]
at86rf230: remove tx_timeout
This patch removes tx_timeout handling. We used it in sync xmit
handling. Since we support async xmit handling a xmit timeout handling
isn't easy to implement and should be implemented by netdev watchdog
mechanism.
Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>