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Need to cleanup bridge device timers and ports when being bridge
device is being removed via netlink.
This fixes the problem of observed when doing:
ip link add br0 type bridge
ip link set dev eth1 master br0
ip link set br0 up
ip link del br0
which would cause br0 to hang in unregister_netdev because
of leftover reference count.
Reported-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
net/batman-adv/soft-interface.c
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This is based on an earlier patch by Nick Carter with comments
by David Lamparter but with some refinements. Thanks for their patience
this is a confusing area with overlap of standards, user requirements,
and compatibility with earlier releases.
It adds a new sysfs attribute
/sys/class/net/brX/bridge/group_fwd_mask
that controls forwarding of frames with address of: 01-80-C2-00-00-0X
The default setting has no forwarding to retain compatibility.
One change from earlier releases is that forwarding of group
addresses is not dependent on STP being enabled or disabled. This
choice was made based on interpretation of tie 802.1 standards.
I expect complaints will arise because of this, but better to follow
the standard than continue acting incorrectly by default.
The filtering mask is writeable, but only values that don't forward
known control frames are allowed. It intentionally blocks attempts
to filter control protocols. For example: writing a 8 allows
forwarding 802.1X PAE addresses which is the most common request.
Reported-by: David Lamparter <equinox@diac24.net>
Original-patch-by: Nick Carter <ncarter100@gmail.com>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Tested-by: Benjamin Poirier <benjamin.poirier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This resolves a regression seen by some users of bridging.
Some users use the bridge like a dummy device.
They expect to be able to put an IPv6 address on the device
with no ports attached. Although there are better ways of doing
this, there is no reason to not allow it.
Note: the bridge still will reflect the state of ports in the
bridge if there are any added.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Need to allow application to update existing fdb entries that already
exist. This makes bridge netlink neighbor API have same flags and
semantics as ip neighbor table.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When port is added to a bridge, the old code would send the new neighbor
netlink message before the subsequent new link message. This bug makes
it difficult to use the monitoring API in an application.
This code changes the ordering to add the forwarding entry
after the port is setup. One of the error checks (for invalid address)
is moved earlier in the process to avoid having to do unwind.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Conflicts:
MAINTAINERS
drivers/net/Kconfig
drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
drivers/net/ethernet/broadcom/tg3.c
drivers/net/wireless/iwlwifi/iwl-pci.c
drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
drivers/net/wireless/rt2x00/rt2800usb.c
drivers/net/wireless/wl12xx/main.c
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This patch does several things:
- introduces __ethtool_get_settings which is called from ethtool code and
from drivers as well. Put ASSERT_RTNL there.
- dev_ethtool_get_settings() is replaced by __ethtool_get_settings()
- changes calling in drivers so rtnl locking is respected. In
iboe_get_rate was previously ->get_settings() called unlocked. This
fixes it. Also prb_calc_retire_blk_tmo() in af_packet.c had the same
problem. Also fixed by calling __dev_get_by_index() instead of
dev_get_by_index() and holding rtnl_lock for both calls.
- introduces rtnl_lock in bnx2fc_vport_create() and fcoe_vport_create()
so bnx2fc_if_create() and fcoe_if_create() are called locked as they
are from other places.
- use __ethtool_get_settings() in bonding code
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
v2->v3:
-removed dev_ethtool_get_settings()
-added ASSERT_RTNL into __ethtool_get_settings()
-prb_calc_retire_blk_tmo - use __dev_get_by_index() and lock
around it and __ethtool_get_settings() call
v1->v2:
add missing export_symbol
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> [except FCoE bits]
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since these checks and initialization are done in
dev_ethtool_get_settings called later on, remove this redundancy.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6
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br_multicast_ipv6_rcv() can call pskb_trim_rcsum() and therefore skb
head can be reallocated.
Cache icmp6_type field instead of dereferencing twice the struct
icmp6hdr pointer.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Checksum of ICMPv6 is not properly computed because the pseudo header is not used.
Thus, the MLD packet gets dropped by the bridge.
Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>
Reported-by: Ang Way Chuang <wcang@sfc.wide.ad.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jan Beulich reported a possible net_device leak in bridge code after
commit bb900b27a2f4 (bridge: allow creating bridge devices with netlink)
Reported-by: Jan Beulich <JBeulich@novell.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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replace it by ndo_set_rx_mode
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Free the locally allocated table and newinfo as done in adjacent error
handling code.
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This ensures the neighbor entries associated with the bridge
dev are flushed, also invalidating the associated cached L2 headers.
This means we br_add_if/br_del_if ports to implement hand-over and
not wind up with bridge packets going out with stale MAC.
This means we can also change MAC of port device and also not wind
up with bridge packets going out with stale MAC.
This builds on Stephen Hemminger's patch, also handling the br_del_if
case and the port MAC change case.
Cc: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When assigning a NULL value to an RCU protected pointer, no barrier
is needed. The rcu_assign_pointer, used to handle that but will soon
change to not handle the special case.
Convert all rcu_assign_pointer of NULL value.
//smpl
@@ expression P; @@
- rcu_assign_pointer(P, NULL)
+ RCU_INIT_POINTER(P, NULL)
// </smpl>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The configuration of ebtables shouldn't depend on
CONFIG_BRIDGE_NETFILTER, only on CONFIG_NETFILTER.
Reported-by: Sébastien Laveze <slaveze@gmail.com>
Signed-off-by: Bart De Schuymer <bdschuym@pandora.be>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>
Signed-off-by: Arun Sharma <asharma@fb.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
fs: Merge split strings
treewide: fix potentially dangerous trailing ';' in #defined values/expressions
uwb: Fix misspelling of neighbourhood in comment
net, netfilter: Remove redundant goto in ebt_ulog_packet
trivial: don't touch files that are removed in the staging tree
lib/vsprintf: replace link to Draft by final RFC number
doc: Kconfig: `to be' -> `be'
doc: Kconfig: Typo: square -> squared
doc: Konfig: Documentation/power/{pm => apm-acpi}.txt
drivers/net: static should be at beginning of declaration
drivers/media: static should be at beginning of declaration
drivers/i2c: static should be at beginning of declaration
XTENSA: static should be at beginning of declaration
SH: static should be at beginning of declaration
MIPS: static should be at beginning of declaration
ARM: static should be at beginning of declaration
rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check
Update my e-mail address
PCIe ASPM: forcedly -> forcibly
gma500: push through device driver tree
...
Fix up trivial conflicts:
- arch/arm/mach-ep93xx/dma-m2p.c (deleted)
- drivers/gpio/gpio-ep93xx.c (renamed and context nearby)
- drivers/net/r8169.c (just context changes)
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Some minor cleanups that won't impact code:
1. Remove inline from non-critical functions; compiler will most
likely inline them anyway.
2. Make function args const where possible.
3. Whitespace cleanup
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When STP changes state of interface need to send a new link
message to reflect that change.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If a new device is added to a bridge, the ethernet address of the
bridge network device may change. When the address changes, the
appropriate callback is called, but with the wrong device argument.
The address of the bridge device (ie br0) changes not the address
of the device being passed to add_if (ie eth0).
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the message_age is already greater than the max_age, then the
BPDU is bogus. Linux won't generate BPDU, but conformance tester
or buggy implementation might.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A bridge topology with three systems:
+------+ +------+
| A(2) |--| B(1) |
+------+ +------+
\ /
+------+
| C(3) |
+------+
What is supposed to happen:
* bridge with the lowest ID is elected root (for example: B)
* C detects that A->C is higher cost path and puts in blocking state
What happens. Bridge with lowest id (B) is elected correctly as
root and things start out fine initially. But then config BPDU
doesn't get transmitted from A -> C. Because of that
the link from A-C is transistioned to the forwarding state.
The root cause of this is that the configuration messages
is generated with bogus message age, and dropped before
sending.
In the standardmessage_age is supposed to be:
the time since the generation of the Configuration BPDU by
the Root that instigated the generation of this Configuration BPDU.
Reimplement this by recording the timestamp (age + jiffies) when
recording config information. The old code incorrectly used the time
elapsed on the ageing timer which was incorrect.
See also:
https://bugzilla.vyatta.com/show_bug.cgi?id=7164
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In net/bridge/netfilter/ebt_ulog.c:ebt_ulog_packet() the 'goto unlock'
before the 'alloc_failure' label is completely redundant. This patch
removes it.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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In the future dst entries will be neigh-less. In that environment we
need to have an easy transition point for current users of
dst->neighbour outside of the packet output fast path.
Signed-off-by: David S. Miller <davem@davemloft.net>
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dst_{get,set}_neighbour()
Signed-off-by: David S. Miller <davem@davemloft.net>
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This will get us closer to being able to do "neigh stuff"
completely independent of the underlying dst_entry for
protocols (ipv4/ipv6) that wish to do so.
We will also be able to make dst entries neigh-less.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now that there is a one-to-one correspondance between neighbour
and hh_cache entries, we no longer need:
1) dynamic allocation
2) attachment to dst->hh
3) refcounting
Initialization of the hh_cache entry is indicated by hh_len
being non-zero, and such initialization is always done with
the neighbour's lock held as a writer.
Signed-off-by: David S. Miller <davem@davemloft.net>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
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As is_multicast_ether_addr returns true on broadcast packets as
well, we need to explicitly exclude broadcast packets so that
they're always flooded. This wasn't an issue before as broadcast
packets were considered to be an unregistered multicast group,
which were always flooded. However, as we now only flood such
packets to router ports, this is no longer acceptable.
Reported-by: Michael Guntsche <mike@it-loops.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The bridge currently floods packets to groups that we have never
seen before to all ports. This is not required by RFC4541 and
in fact it is not desirable in environment where traffic to
unregistered group is always present.
This patch changes the behaviour so that we only send traffic
to unregistered groups to ports marked as routers.
The user can always force flooding behaviour to any given port
by marking it as a router.
Note that this change does not apply to traffic to 224.0.0.X
as traffic to those groups must always be flooded to all ports.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/iwlwifi/iwl-agn-rxon.c
drivers/net/wireless/rtlwifi/pci.c
net/netfilter/ipvs/ip_vs_core.c
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Otherwise we will not see the name of the slave dev in error
message:
[ 388.469446] (null): doesn't support polling, aborting.
Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Upon reception of a MGM report packet the kernel sets the mrouters_only flag
in a skb that is a clone of the original skb, which means that the bridge
loses track of MGM packets (cb buffers are tied to a specific skb and not
shared) and it ends up forwading join requests to the bridge interface.
This can cause unexpected membership timeouts and intermitent/permanent loss
of connectivity as described in RFC 4541 [2.1.1. IGMP Forwarding Rules]:
A snooping switch should forward IGMP Membership Reports only to
those ports where multicast routers are attached.
[...]
Sending membership reports to other hosts can result, for IGMPv1
and IGMPv2, in unintentionally preventing a host from joining a
specific multicast group.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
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Upon reception of a IGMP/IGMPv2 membership report the kernel sets the
mrouters_only flag in a skb that may be a clone of the original skb, which
means that sometimes the bridge loses track of membership report packets (cb
buffers are tied to a specific skb and not shared) and it ends up forwading
join requests to the bridge interface.
This can cause unexpected membership timeouts and intermitent/permanent loss
of connectivity as described in RFC 4541 [2.1.1. IGMP Forwarding Rules]:
A snooping switch should forward IGMP Membership Reports only to
those ports where multicast routers are attached.
[...]
Sending membership reports to other hosts can result, for IGMPv1
and IGMPv2, in unintentionally preventing a host from joining a
specific multicast group.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Tested-by: Hayato Kakuta <kakuta.hayato@oss.ntt.co.jp>
Signed-off-by: David S. Miller <davem@conan.davemloft.net>
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The message size allocated for rtnl ifinfo dumps was limited to
a single page. This is not enough for additional interface info
available with devices that support SR-IOV and caused a bug in
which VF info would not be displayed if more than approximately
40 VFs were created per interface.
Implement a new function pointer for the rtnl_register service that will
calculate the amount of data required for the ifinfo dump and allocate
enough data to satisfy the request.
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Like in commit 0972ddb237 (provide cow_metrics() methods to blackhole
dst_ops), we must provide a cow_metrics for bridges fake_dst_ops as
well.
This fixes a regression coming from commits 62fa8a846d7d (net: Implement
read-only protection and COW'ing of metrics.) and 33eb9873a28 (bridge:
initialize fake_rtable metrics)
ip link set mybridge mtu 1234
-->
[ 136.546243] Pid: 8415, comm: ip Tainted: P
2.6.39.1-00006-g40545b7 #103 ASUSTeK Computer Inc. V1Sn
/V1Sn
[ 136.546256] EIP: 0060:[<00000000>] EFLAGS: 00010202 CPU: 0
[ 136.546268] EIP is at 0x0
[ 136.546273] EAX: f14a389c EBX: 000005d4 ECX: f80d32c0 EDX: f80d1da1
[ 136.546279] ESI: f14a3000 EDI: f255bf10 EBP: f15c3b54 ESP: f15c3b48
[ 136.546285] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 136.546293] Process ip (pid: 8415, ti=f15c2000 task=f4741f80
task.ti=f15c2000)
[ 136.546297] Stack:
[ 136.546301] f80c658f f14a3000 ffffffed f15c3b64 c12cb9c8 f80d1b80
ffffffa1 f15c3bbc
[ 136.546315] c12da347 c12d9c7d 00000000 f7670b00 00000000 f80d1b80
ffffffa6 f15c3be4
[ 136.546329] 00000004 f14a3000 f255bf20 00000008 f15c3bbc c11d6cae
00000000 00000000
[ 136.546343] Call Trace:
[ 136.546359] [<f80c658f>] ? br_change_mtu+0x5f/0x80 [bridge]
[ 136.546372] [<c12cb9c8>] dev_set_mtu+0x38/0x80
[ 136.546381] [<c12da347>] do_setlink+0x1a7/0x860
[ 136.546390] [<c12d9c7d>] ? rtnl_fill_ifinfo+0x9bd/0xc70
[ 136.546400] [<c11d6cae>] ? nla_parse+0x6e/0xb0
[ 136.546409] [<c12db931>] rtnl_newlink+0x361/0x510
[ 136.546420] [<c1023240>] ? vmalloc_sync_all+0x100/0x100
[ 136.546429] [<c1362762>] ? error_code+0x5a/0x60
[ 136.546438] [<c12db5d0>] ? rtnl_configure_link+0x80/0x80
[ 136.546446] [<c12db27a>] rtnetlink_rcv_msg+0xfa/0x210
[ 136.546454] [<c12db180>] ? __rtnl_unlock+0x20/0x20
[ 136.546463] [<c12ee0fe>] netlink_rcv_skb+0x8e/0xb0
[ 136.546471] [<c12daf1c>] rtnetlink_rcv+0x1c/0x30
[ 136.546479] [<c12edafa>] netlink_unicast+0x23a/0x280
[ 136.546487] [<c12ede6b>] netlink_sendmsg+0x26b/0x2f0
[ 136.546497] [<c12bb828>] sock_sendmsg+0xc8/0x100
[ 136.546508] [<c10adf61>] ? __alloc_pages_nodemask+0xe1/0x750
[ 136.546517] [<c11d0602>] ? _copy_from_user+0x42/0x60
[ 136.546525] [<c12c5e4c>] ? verify_iovec+0x4c/0xc0
[ 136.546534] [<c12bd805>] sys_sendmsg+0x1c5/0x200
[ 136.546542] [<c10c2150>] ? __do_fault+0x310/0x410
[ 136.546549] [<c10c2c46>] ? do_wp_page+0x1d6/0x6b0
[ 136.546557] [<c10c47d1>] ? handle_pte_fault+0xe1/0x720
[ 136.546565] [<c12bd1af>] ? sys_getsockname+0x7f/0x90
[ 136.546574] [<c10c4ec1>] ? handle_mm_fault+0xb1/0x180
[ 136.546582] [<c1023240>] ? vmalloc_sync_all+0x100/0x100
[ 136.546589] [<c10233b3>] ? do_page_fault+0x173/0x3d0
[ 136.546596] [<c12bd87b>] ? sys_recvmsg+0x3b/0x60
[ 136.546605] [<c12bdd83>] sys_socketcall+0x293/0x2d0
[ 136.546614] [<c13629d0>] sysenter_do_call+0x12/0x26
[ 136.546619] Code: Bad EIP value.
[ 136.546627] EIP: [<00000000>] 0x0 SS:ESP 0068:f15c3b48
[ 136.546645] CR2: 0000000000000000
[ 136.546652] ---[ end trace 6909b560e78934fa ]---
Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Kill set but not used 'entry_offset'.
Add a default case to the switch statement so the compiler
can see that we always initialize off and size_kern before
using them.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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bridge netfilter code uses a fake_rtable, and we must init its _metric
field or risk NULL dereference later.
Ref: https://bugzilla.kernel.org/show_bug.cgi?id=35672
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In the old days, we used to access dev->master in __netif_receive_skb()
in a rcu_read_lock section.
So one synchronize_net() call was needed in netdev_set_master() to make
sure another cpu could not use old master while/after we release it.
We now use netdev_rx_handler infrastructure and added one
synchronize_net() call in bond_release()/bond_release_all()
Remove the obsolete synchronize_net() from netdev_set_master() and add
one in bridge del_nbp() after its netdev_rx_handler_unregister() call.
This makes enslave -d a bit faster.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Jiri Pirko <jpirko@redhat.com>
CC: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In the previous patch I added NETDEV_JOIN, now
we can notify netconsole when adding a device to a bridge too.
Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Neil Horman <nhorman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/vmxnet3/vmxnet3_ethtool.c
net/core/dev.c
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The commit 6b1e960fdbd75dcd9bcc3ba5ff8898ff1ad30b6e
bridge: Reset IPCB when entering IP stack on NF_FORWARD
broke forwarding of IPV6 packets in bridge because it would
call bp_parse_ip_options with an IPV6 packet.
Reported-by: Noah Meyerhans <noahm@debian.org>
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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master.kernel.org:/pub/scm/linux/kernel/git/davem/net-3.6
Conflicts:
drivers/net/benet/be_main.c
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The optimizations in commit 255d0dc34068a976
(netfilter: x_table: speedup compat operations) assume that
xt_compat_add_offset is called once per rule.
ebtables however called it for each match/target found in a rule.
The match/watcher/target parser already returns the needed delta, so it
is sufficient to move the xt_compat_add_offset call to a more reasonable
location.
While at it, also get rid of the unused COMPAT iterator macros.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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