Commit Graph

404 Commits

Author SHA1 Message Date
Jeff Hansen
30df94f800 bridge: Fix double-free in br_add_if.
There is a potential double-kfree in net/bridge/br_if.c.  If br_fdb_insert
fails, then the kobject is put back (which calls kfree due to the kobject
release), and then kfree is called again on the net_bridge_port.  This
patch fixes the crash.

Thanks to Stephen Hemminger for the one-line fix.

Signed-off-by: Jeff Hansen <x@jeffhansen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-28 12:54:25 -07:00
Alexey Dobriyan
8d65af789f sysctl: remove "struct file *" argument of ->proc_handler
It's unused.

It isn't needed -- read or write flag is already passed and sysctl
shouldn't care about the rest.

It _was_ used in two places at arch/frv for some reason.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-24 07:21:04 -07:00
Marcel Holtmann
384912ed19 net: Add DEVTYPE support for Ethernet based devices
The Ethernet framing is used for a lot of devices these days. Most
prominent are WiFi and WiMAX based devices. However for userspace
application it is important to classify these devices correctly and
not only see them as Ethernet devices. The daemons like HAL, DeviceKit
or even NetworkManager with udev support tries to do the classification
in userspace with a lot trickery and extra system calls. This is not
good and actually reaches its limitations. Especially since the kernel
does know the type of the Ethernet device it is pretty stupid.

To solve this problem the underlying device type needs to be set and
then the value will be exported as DEVTYPE via uevents and available
within udev.

  # cat /sys/class/net/wlan0/uevent
  DEVTYPE=wlan
  INTERFACE=wlan0
  IFINDEX=5

This is similar to subsystems like USB and SCSI that distinguish
between hosts, devices, disks, partitions etc.

The new SET_NETDEV_DEVTYPE() is a convenience helper to set the actual
device type. All device types are free form, but for convenience the
same strings as used with RFKILL are choosen.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-11 12:54:55 -07:00
David S. Miller
9a0da0d19c Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2009-09-10 18:17:09 -07:00
Patrick McHardy
8a56df0ae1 netfilter: ebt_ulog: fix checkentry return value
Commit 19eda87 (netfilter: change return types of check functions for
Ebtables extensions) broke the ebtables ulog module by missing a return
value conversion.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-09-01 14:34:01 +02:00
Stephen Hemminger
6fef4c0c8e netdev: convert pseudo-devices to netdev_tx_t
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01 01:13:07 -07:00
Eric Dumazet
f3abc9b963 netfilter: bridge: refcount fix
commit f216f082b2
([NETFILTER]: bridge netfilter: deal with martians correctly)
added a refcount leak on in_dev.

Instead of using in_dev_get(), we can use __in_dev_get_rcu(),
as netfilter hooks are running under rcu_read_lock(), as pointed
by Patrick.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-08-24 19:35:38 +02:00
Jan Engelhardt
35aad0ffdf netfilter: xtables: mark initial tables constant
The inputted table is never modified, so should be considered const.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-08-24 14:56:30 +02:00
Fischer, Anna
3982d3d28b net/bridge: Add 'hairpin' port forwarding mode
This patch adds a 'hairpin' (also called 'reflective relay') mode
port configuration to the Linux Ethernet bridge kernel module.
A bridge supporting hairpin forwarding mode can send frames back
out through the port the frame was received on.

Hairpin mode is required to support basic VEPA (Virtual
Ethernet Port Aggregator) capabilities.

You can find additional information on VEPA here:
http://tech.groups.yahoo.com/group/evb/
http://www.ieee802.org/1/files/public/docs2009/new-hudson-vepa_seminar-20090514d.pdf
http://www.internet2.edu/presentations/jt2009jul/20090719-congdon.pdf

An additional patch 'bridge-utils: Add 'hairpin' port forwarding mode'
is provided to allow configuring hairpin mode from userspace tools.

Signed-off-by: Paul Congdon <paul.congdon@hp.com>
Signed-off-by: Anna Fischer <anna.fischer@hp.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-13 16:26:11 -07:00
Patrick McHardy
dc05a564ab Merge branch 'master' of git://dev.medozas.de/linux 2009-08-10 17:14:59 +02:00
Jan Engelhardt
24c232d8e9 netfilter: xtables: switch hook PFs to nfproto
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-08-10 13:35:21 +02:00
Tobias Klauser
be39ee11cd netfilter: ebtables: Use %pM conversion specifier
ebt_log uses its own implementation of print_mac to print MAC addresses.
This patch converts it to use the %pM conversion specifier for printk.

Signed-off-by: Tobias Klauser <klto@zhaw.ch>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-08-10 10:10:55 +02:00
Jan Engelhardt
36cbd3dcc1 net: mark read-only arrays as const
String literals are constant, and usually, we can also tag the array
of pointers const too, moving it to the .rodata section.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-05 10:42:58 -07:00
David S. Miller
df597efb57 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/wireless/iwlwifi/iwl-3945.h
	drivers/net/wireless/iwlwifi/iwl-tx.c
	drivers/net/wireless/iwlwifi/iwl3945-base.c
2009-07-30 19:22:43 -07:00
Xiaotian Feng
c587aea951 net/bridge: use kobject_put to release kobject in br_add_if error path
kobject_init_and_add will alloc memory for kobj->name, so in br_add_if
error path, simply use kobject_del will not free memory for kobj->name.
Fix by using kobject_put instead, kobject_put will internally calls
kobject_del and frees memory for kobj->name.

Signed-off-by: Xiaotian Feng <dfeng@redhat.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-26 19:20:51 -07:00
Cyrill Gorcunov
1490fd8947 net, bridge: align br_nf_ops assignment
No functional change -- just for easier reading.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-05 19:16:14 -07:00
Patrick McHardy
6ed106549d net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functions
This patch is the result of an automatic spatch transformation to convert
all ndo_start_xmit() return values of 0 to NETDEV_TX_OK.

Some occurences are missed by the automatic conversion, those will be
handled in a seperate patch.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-05 19:16:04 -07:00
Jesper Dangaard Brouer
473c22d759 bridge: Use rcu_barrier() instead of syncronize_net() on unload.
When unloading modules that uses call_rcu() callbacks, then we must
use rcu_barrier().  This module uses syncronize_net() which is not
enough to be sure that all callback has been completed.

Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-26 13:51:32 -07:00
Michał Mirosław
da6782927d bridge: Simplify interface for ATM LANE
This patch changes FDB entry check for ATM LANE bridge integration.
There's no point in holding a FDB entry around SKB building.

br_fdb_get()/br_fdb_put() pair are changed into single br_fdb_test_addr()
hook that checks if the addr has FDB entry pointing to other port
to the one the request arrived on.

FDB entry refcounting is removed as it's not used anywhere else.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-11 21:03:21 -07:00
Patrick McHardy
36432dae73 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-11 16:00:49 +02:00
Evgeniy Polyakov
a5e7882096 netfilter: x_tables: added hook number into match extension parameter structure.
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-04 16:54:42 +02:00
Eric Dumazet
adf30907d6 net: skb->dst accessors
Define three accessors to get/set dst attached to a skb

struct dst_entry *skb_dst(const struct sk_buff *skb)

void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)

void skb_dst_drop(struct sk_buff *skb)
This one should replace occurrences of :
dst_release(skb->dst)
skb->dst = NULL;

Delete skb->dst field

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-03 02:51:04 -07:00
Eric Dumazet
511c3f92ad net: skb->rtable accessor
Define skb_rtable(const struct sk_buff *skb) accessor to get rtable from skb

Delete skb->rtable field

Setting rtable is not allowed, just set dst instead as rtable is an alias.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-03 02:51:02 -07:00
Patrick McHardy
8cc848fa34 Merge branch 'master' of git://dev.medozas.de/linux 2009-06-02 13:44:56 +02:00
Jiri Pirko
0bb32417ff bridge: avoid an extra space in br_fdb_update()
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-27 15:46:54 -07:00
Eric W. Biederman
af38f29895 net: Fix bridgeing sysfs handling of rtnl_lock
Holding rtnl_lock when we are unregistering the sysfs files can
deadlock if we unconditionally take rtnl_lock in a sysfs file.  So fix
it with the now familiar patter of: rtnl_trylock and syscall_restart()

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-18 22:15:59 -07:00
Stephen Hemminger
4f0611af47 bridge: fix initial packet flood if !STP
If bridge is configured with no STP and forwarding delay of 0 (which
is typical for virtualization) then when link starts it will flood all
packets for the first 20 seconds.

This bug was introduced by a combination of earlier changes:
  * forwarding database uses hold time of zero to indicate
    user wants to always flood packets
  * optimzation of the case of forwarding delay of 0 avoids the initial
    timer tick

The fix is to just skip all the topology change detection code if
kernel STP is not being used.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:12:55 -07:00
Stephen Hemminger
a598f6aebe bridge: relay bridge multicast pkgs if !STP
Currently the bridge catches all STP packets; even if STP is turned
off.  This prevents other systems (which do have STP turned on)
from being able to detect loops in the network.

With this patch, if STP is off, then any packet sent to the STP
multicast group address is forwarded to all ports.

Based on earlier patch by Joakim Tjernlund with changes
to go through forwarding (not local chain), and optimization
that only last octet needs to be checked.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:12:54 -07:00
Jan Engelhardt
98e8640316 netfilter: xtables: consolidate open-coded logic
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
2009-05-08 10:30:48 +02:00
hummerbliss@gmail.com
c197facc8e netfilter: bridge: allow fragmentation of VLAN packets traversing a bridge
br_nf_dev_queue_xmit only checks for ETH_P_IP packets for fragmenting but not
VLAN packets. This results in dropping of large VLAN packets. This can be
observed when connection tracking is enabled. Connection tracking re-assembles
fragmented packets, and these have to re-fragmented when transmitting out. Also,
make sure only refragmented packets are defragmented as per suggestion from
Patrick McHardy.

Signed-off-by: Saikiran Madugula <hummerbliss@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-04-20 17:12:35 +02:00
David S. Miller
f0de70f8bb Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-03-26 01:22:01 -07:00
Eric Leblond
7249dee5bd netfilter: fix nf_logger name in ebt_ulog.
This patch renames the ebt_ulog nf_logger from "ulog" to "ebt_ulog" to
be in sync with other modules naming. As this name was currently only
used for informational purpose, the renaming should be harmless.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-26 01:04:28 -07:00
Eric Leblond
3b334d427c netfilter: fix warning in ebt_ulog init function.
The ebt_ulog module does not follow the fixed convention about function
return. Loading the module is triggering the following message:

sys_init_module: 'ebt_ulog'->init suspiciously returned 1, it should follow 0/-E convention
sys_init_module: loading module anyway...
Pid: 2334, comm: modprobe Not tainted 2.6.29-rc5edenwall0-00883-g199e57b #146
Call Trace:
 [<c0441b81>] ? printk+0xf/0x16
 [<c02311af>] sys_init_module+0x107/0x186
 [<c0202cfa>] syscall_call+0x7/0xb

The following patch fixes the return treatment in ebt_ulog_init()
function.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-26 01:04:02 -07:00
Eric Leblond
704b3ea3b9 netfilter: fix warning about invalid const usage
This patch fixes the declaration of the logger structure in ebt_log
and ebt_ulog: I forgot to remove the const option from their declaration
in the commit ca735b3aaa ("netfilter:
use a linked list of loggers").

Pointed-out-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-26 01:03:23 -07:00
Stephen Hemminger
cda6d377ec bridge: bad error handling when adding invalid ether address
This fixes an crash when empty bond device is added to a bridge.
If an interface with invalid ethernet address (all zero) is added
to a bridge, then bridge code detects it when setting up the forward
databas entry. But the error unwind is broken, the bridge port object 
can get freed twice: once when ref count went to zeo, and once by kfree.
Since object is never really accessible, just free it.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-25 21:01:47 -07:00
David S. Miller
b5bb14386e Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6 2009-03-24 13:24:36 -07:00
Pablo Neira Ayuso
1ce85fe402 netlink: change nlmsg_notify() return value logic
This patch changes the return value of nlmsg_notify() as follows:

If NETLINK_BROADCAST_ERROR is set by any of the listeners and
an error in the delivery happened, return the broadcast error;
else if there are no listeners apart from the socket that
requested a change with the echo flag, return the result of the
unicast notification. Thus, with this patch, the unicast
notification is handled in the same way of a broadcast listener
that has set the NETLINK_BROADCAST_ERROR socket flag.

This patch is useful in case that the caller of nlmsg_notify()
wants to know the result of the delivery of a netlink notification
(including the broadcast delivery) and take any action in case
that the delivery failed. For example, ctnetlink can drop packets
if the event delivery failed to provide reliable logging and
state-synchronization at the cost of dropping packets.

This patch also modifies the rtnetlink code to ignore the return
value of rtnl_notify() in all callers. The function rtnl_notify()
(before this patch) returned the error of the unicast notification
which makes rtnl_set_sk_err() reports errors to all listeners. This
is not of any help since the origin of the change (the socket that
requested the echoing) notices the ENOBUFS error if the notification
fails and should resync itself.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-24 23:18:28 -08:00
Stephen Hemminger
842bff366b netfilter: ebtables: remove unneeded initializations
The initialization of the lock element is not needed
since the lock is always initialized in ebt_register_table.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-02-18 16:30:38 +01:00
David S. Miller
0ecc103aec Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
	drivers/net/gianfar.c
2009-02-09 23:22:21 -08:00
Herbert Xu
4906f9985e bridge: Fix LRO crash with tun
> Kernel BUG at drivers/net/tun.c:444
> invalid opcode: 0000 [1] SMP
> last sysfs file: /class/net/lo/ifindex
> CPU 0
> Modules linked in: tun ipt_MASQUERADE iptable_nat ip_nat xt_state ip_conntrack
> nfnetlink ipt_REJECT xt_tcpudp iptable_filter d
> Pid: 6912, comm: qemu-kvm Tainted: G      2.6.18-128.el5 #1
> RIP: 0010:[<ffffffff886f57b0>]  [<ffffffff886f57b0>]
> :tun:tun_chr_readv+0x2b1/0x3a6
> RSP: 0018:ffff8102202c5e48  EFLAGS: 00010246
> RAX: 0000000000000000 RBX: ffff8102202c5e98 RCX: 0000000004010000
> RDX: ffff810227063680 RSI: ffff8102202c5e9e RDI: ffff8102202c5e92
> RBP: 0000000000010ff6 R08: 0000000000000000 R09: 0000000000000001
> R10: ffff8102202c5e94 R11: 0000000000000202 R12: ffff8102275357c0
> R13: ffff81022755e500 R14: 0000000000000000 R15: ffff8102202c5ef8
> FS:  00002ae4398db980(0000) GS:ffffffff803ac000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00002ae4ab514000 CR3: 0000000221344000 CR4: 00000000000026e0
> Process qemu-kvm (pid: 6912, threadinfo ffff8102202c4000, task
> ffff81022e58d820)
> Stack:  00000000498735cb ffff810229d1a3c0 0000000000000000 ffff81022e58d820
>  ffffffff8008a461 ffff81022755e528 ffff81022755e528 ffffffff8009f925
>  000005ea05ea0000 ffff8102209d0000 00001051143e1600 ffffffff8003c00e
> Call Trace:
>  [<ffffffff8008a461>] default_wake_function+0x0/0xe
>  [<ffffffff8009f925>] enqueue_hrtimer+0x55/0x70
>  [<ffffffff8003c00e>] hrtimer_start+0xbc/0xce
>  [<ffffffff886f58bf>] :tun:tun_chr_read+0x1a/0x1f
>  [<ffffffff8000b3f3>] vfs_read+0xcb/0x171
>  [<ffffffff800117d4>] sys_read+0x45/0x6e
>  [<ffffffff8005d116>] system_call+0x7e/0x83
>
>
> Code: 0f 0b 68 40 62 6f 88 c2 bc 01 f6 42 0a 08 74 0c 80 4c 24 41
> RIP  [<ffffffff886f57b0>] :tun:tun_chr_readv+0x2b1/0x3a6
>  RSP <ffff8102202c5e48>
>  <0>Kernel panic - not syncing: Fatal exception

This crashed when an LRO packet generated by bnx2x reached a
tun device through the bridge.  We're supposed to drop it at
the bridge.  However, because the check was placed in br_forward
instead of __br_forward, it's only effective if we are sending
the packet through a single port.

This patch fixes it by moving the check into __br_forward.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-09 15:07:18 -08:00
Harvey Harrison
09640e6365 net: replace uses of __constant_{endian}
Base versions handle constant folding now.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-01 00:45:17 -08:00
Jan Engelhardt
d61ba9fd55 netfilter 05/09: ebtables: fix inversion in match code
Commit 8cc784ee (netfilter: change return types of match functions
for ebtables extensions) broke ebtables matches by inverting the
sense of match/nomatch.

Reported-by: Matt Cross <matthltc@us.ibm.com>
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-12 21:18:35 -08:00
Herbert Xu
47e0e1ca13 netfilter 03/09: bridge: Disable PPPOE/VLAN processing by default
The PPPOE/VLAN processing code in the bridge netfilter is broken
by design.  The VLAN tag and the PPPOE session ID are an integral
part of the packet flow information, yet they're completely
ignored by the bridge netfilter.  This is potentially a security
hole as it treats all VLANs and PPPOE sessions as the same.

What's more, it's actually broken for PPPOE as the bridge netfilter
tries to trim the packets to the IP length without adjusting the
PPPOE header (and adjusting the PPPOE header isn't much better
since the PPPOE peer may require the padding to be present).

Therefore we should disable this by default.

It does mean that people relying on this feature may lose networking
depending on how their bridge netfilter rules are configured.
However, IMHO the problems this code causes are serious enough to
warrant this.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-12 21:18:34 -08:00
Herbert Xu
a2bd40ad31 netfilter 02/09: bridge: Fix handling of non-IP packets in FORWARD/POST_ROUTING
Currently the bridge FORWARD/POST_ROUTING chains treats all
non-IPv4 packets as IPv6.  This packet fixes that by returning
NF_ACCEPT on non-IP packets instead, just as is done in PRE_ROUTING.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-12 21:18:33 -08:00
Julia Lawall
f3d8b2e467 net/bridge/netfilter: move a dereference below a NULL test
In each case, if the NULL test is necessary, then the dereference should be
moved below the NULL test.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T;
expression E;
identifier i,fld;
statement S;
@@

- T i = E->fld;
+ T i;
  ... when != E
      when != i
  if (E == NULL) S
+ i = E->fld;
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-01-11 00:06:33 -08:00
David S. Miller
ed77a89c30 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
Conflicts:

	net/netfilter/nf_conntrack_netlink.c
2008-11-28 02:19:15 -08:00
David S. Miller
5b9ab2ec04 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/hp-plus.c
	drivers/net/wireless/ath5k/base.c
	drivers/net/wireless/ath9k/recv.c
	net/wireless/reg.c
2008-11-26 23:48:40 -08:00
Herbert Xu
631339f1e5 bridge: netfilter: fix update_pmtu crash with GRE
As GRE tries to call the update_pmtu function on skb->dst and
bridge supplies an skb->dst that has a NULL ops field, all is
not well.

This patch fixes this by giving the bridge device an ops field
with an update_pmtu function.  For the moment I've left all
other fields blank but we can fill them in later should the
need arise.

Based on report and patch by Philip Craig.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-24 16:06:50 -08:00
Stephen Hemminger
008298231a netdev: add more functions to netdevice ops
This patch moves neigh_setup and hard_start_xmit into the network device ops
structure. For bisection, fix all the previously converted drivers as well.
Bonding driver took the biggest hit on this.

Added a prefetch of the hard_start_xmit in the fast path to try and reduce
any impact this would have.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-20 20:14:53 -08:00
Stephen Hemminger
a2dbb88210 bridge: convert to net_device_ops
Convert to net_device_ops function table.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-19 22:42:38 -08:00