| Commit message (Collapse) | Author | Age | Files | Lines |
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[ 4593.956206] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
[ 4593.956219] IP: [<ffffffffa03357a4>] br_nf_forward_finish+0x154/0x170 [bridge]
[ 4593.956232] PGD 195ece067 PUD 1ba005067 PMD 0
[ 4593.956241] Oops: 0000 [#1] SMP
[ 4593.956248] last sysfs file:
/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:08/ATK0110:00/hwmon/hwmon0/temp2_label
[ 4593.956253] CPU 3
...
[ 4593.956380] Pid: 29512, comm: kvm Not tainted 2.6.34-rc7-net #195 P6T DELUXE/System Product Name
[ 4593.956384] RIP: 0010:[<ffffffffa03357a4>] [<ffffffffa03357a4>] br_nf_forward_finish+0x154/0x170 [bridge]
[ 4593.956395] RSP: 0018:ffff880001e63b78 EFLAGS: 00010246
[ 4593.956399] RAX: 0000000000000608 RBX: ffff880057181700 RCX: ffff8801b813d000
[ 4593.956402] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff880057181700
[ 4593.956406] RBP: ffff880001e63ba8 R08: ffff8801b9d97000 R09: ffffffffa0335650
[ 4593.956410] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801b813d000
[ 4593.956413] R13: ffffffff81ab3940 R14: ffff880057181700 R15: 0000000000000002
[ 4593.956418] FS: 00007fc40d380710(0000) GS:ffff880001e60000(0000) knlGS:0000000000000000
[ 4593.956422] CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b
[ 4593.956426] CR2: 0000000000000018 CR3: 00000001ba1d7000 CR4: 00000000000026e0
[ 4593.956429] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4593.956433] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 4593.956437] Process kvm (pid: 29512, threadinfo ffff8801ba566000, task ffff8801b8003870)
[ 4593.956441] Stack:
[ 4593.956443] 0000000100000020 ffff880001e63ba0 ffff880001e63ba0 ffff880057181700
[ 4593.956451] <0> ffffffffa0335650 ffffffff81ab3940 ffff880001e63bd8 ffffffffa03350e6
[ 4593.956462] <0> ffff880001e63c40 000000000000024d ffff880057181700 0000000080000000
[ 4593.956474] Call Trace:
[ 4593.956478] <IRQ>
[ 4593.956488] [<ffffffffa0335650>] ? br_nf_forward_finish+0x0/0x170 [bridge]
[ 4593.956496] [<ffffffffa03350e6>] NF_HOOK_THRESH+0x56/0x60 [bridge]
[ 4593.956504] [<ffffffffa0335282>] br_nf_forward_arp+0x112/0x120 [bridge]
[ 4593.956511] [<ffffffff813f7184>] nf_iterate+0x64/0xa0
[ 4593.956519] [<ffffffffa032f920>] ? br_forward_finish+0x0/0x60 [bridge]
[ 4593.956524] [<ffffffff813f722c>] nf_hook_slow+0x6c/0x100
[ 4593.956531] [<ffffffffa032f920>] ? br_forward_finish+0x0/0x60 [bridge]
[ 4593.956538] [<ffffffffa032f800>] ? __br_forward+0x0/0xc0 [bridge]
[ 4593.956545] [<ffffffffa032f86d>] __br_forward+0x6d/0xc0 [bridge]
[ 4593.956550] [<ffffffff813c5d8e>] ? skb_clone+0x3e/0x70
[ 4593.956557] [<ffffffffa032f462>] deliver_clone+0x32/0x60 [bridge]
[ 4593.956564] [<ffffffffa032f6b6>] br_flood+0xa6/0xe0 [bridge]
[ 4593.956571] [<ffffffffa032f800>] ? __br_forward+0x0/0xc0 [bridge]
Don't call nf_bridge_update_protocol() for ARP traffic as skb->nf_bridge isn't
used in the ARP case.
Reported-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Bart De Schuymer <bdschuym@pandora.be>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Prepare the arrays for use with the multiregister function. The
future layer-3 xt matches can then be easily added to it without
needing more (un)register code.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Since xt_action_param is writable, let's use it. The pointer to
'bool hotdrop' always worried (8 bytes (64-bit) to write 1 byte!).
Surprisingly results in a reduction in size:
text data bss filename
5457066 692730 357892 vmlinux.o-prev
5456554 692730 357892 vmlinux.o
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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In future, layer-3 matches will be an xt module of their own, and
need to set the fragoff and thoff fields. Adding more pointers would
needlessy increase memory requirements (esp. so for 64-bit, where
pointers are wider).
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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The structures carried - besides match/target - almost the same data.
It is possible to combine them, as extensions are evaluated serially,
and so, the callers end up a little smaller.
text data bss filename
-15318 740 104 net/ipv4/netfilter/ip_tables.o
+15286 740 104 net/ipv4/netfilter/ip_tables.o
-15333 540 152 net/ipv6/netfilter/ip6_tables.o
+15269 540 152 net/ipv6/netfilter/ip6_tables.o
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/kaber/ipmr-2.6
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The ip6mr /proc interface (ip6_mr_cache) can't be extended to dump routes
from any tables but the main table in a backwards compatible fashion since
the output format ends in a variable amount of output interfaces.
Introduce a new netlink interface to dump multicast routes from all tables,
similar to the netlink interface for regular routes.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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This patch adds support for multiple independant multicast routing instances,
named "tables".
Userspace multicast routing daemons can bind to a specific table instance by
issuing a setsockopt call using a new option MRT6_TABLE. The table number is
stored in the raw socket data and affects all following ip6mr setsockopt(),
getsockopt() and ioctl() calls. By default, a single table (RT6_TABLE_DFLT)
is created with a default routing rule pointing to it. Newly created pim6reg
devices have the table number appended ("pim6regX"), with the exception of
devices created in the default table, which are named just "pim6reg" for
compatibility reasons.
Packets are directed to a specific table instance using routing rules,
similar to how regular routing rules work. Currently iif, oif and mark
are supported as keys, source and destination addresses could be supported
additionally.
Example usage:
- bind pimd/xorp/... to a specific table:
uint32_t table = 123;
setsockopt(fd, SOL_IPV6, MRT6_TABLE, &table, sizeof(table));
- create routing rules directing packets to the new table:
# ip -6 mrule add iif eth0 lookup 123
# ip -6 mrule add oif eth0 lookup 123
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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Signed-off-by: Patrick McHardy <kaber@trash.net>
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Now that cache entries in unres_queue don't need to be distinguished by their
network namespace pointer anymore, we can remove it from struct mfc6_cache
add pass the namespace as function argument to the functions that need it.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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The unres_queue is currently shared between all namespaces. Following patches
will additionally allow to create multiple multicast routing tables in each
namespace. Having a single shared queue for all these users seems to excessive,
move the queue and the cleanup timer to the per-namespace data to unshare it.
As a side-effect, this fixes a bug in the seq file iteration functions: the
first entry returned is always from the current namespace, entries returned
after that may belong to any namespace.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Convert tipc_msg_* inline routines that are more than one line into
standard functions, thereby eliminating some repeated code.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert buf_acquire inline routine that is more than one line into
a standard function, thereby eliminating some repeated code.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert bearer congestion inline routine that is more than one line into
a standard function, thereby eliminating some repeated code.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Converts port list inline routines that are more than one line into
standard functions, thereby eliminating a significant amount of
repeated code.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Converts nmap inline routines that are more than one line into standard
functions, thereby eliminating a significant amount of repeated code.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Convert address-related inline routines that are more than one
line into standard functions, thereby eliminating a significant
amount of repeated code.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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These functions have enough code in them such that they
seem like sensible targets for un-inlining. Prior to doing
that, this adds the tipc_ prefix to the functions, so that
in the event of a panic dump or similar, the subsystem from
which the functions come from is immediately clear.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rather than live in link.c where they can only be used in that file alone,
these helper routines are better served by being in link.h
Relocated are the following:
link_working_working
link_working_unknown
link_reset_unknown
link_reset_reset
link_blocked
link_congested
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is just a straight return of a field; there is no
value in the abstraction of hiding it behind a function.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Provide initial support for displaying overall TIPC status/statistics
information at runtime. Currently, only version info for the TIPC
kernel module is displayed.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Make a cosmetic change to the name displayed for the broadcast link,
to better reflect its true nature. Since TIPC utilizes this link to
distribute name table information, in addition to multicast messages
sent by user applications, the prior name "multicast-link" is
no longer appropriate.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eliminate a couple of instances where TIPC's native API send routines
were doing pointless initialization of local variables.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eliminate some unused data structures in the TIPC
configuration service that relate to the handling of link
subscriptions, which were not supported when TIPC 1.5 was
introduced. If and when support for link subscriptions is
offered in TIPC, these elements may need to be re-introduced.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eliminate an argument in a print statement that has no corresponding
format specification.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eliminate a field of the TIPC port structure that is populated,
but never referenced.
Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Aviod these link-time errors when IPV6=m, XT_TEE=y:
net/built-in.o: In function `tee_tg_route6':
xt_TEE.c:(.text+0x45ca5): undefined reference to `ip6_route_output'
net/built-in.o: In function `tee_tg6':
xt_TEE.c:(.text+0x45d79): undefined reference to `ip6_local_out'
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Acked-by: Randy Dunlap <randy.dunlap@oracle.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:
Documentation/feature-removal-schedule.txt
drivers/net/wireless/ath/ar9170/usb.c
drivers/scsi/iscsi_tcp.c
net/ipv4/ipmr.c
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
drivers/net/wireless/ath/ar9170/main.c
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Also simplify the flags assignment into a single statement at the
end of ieee80211_beacon_get_tim.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Currently, when one interface switches HT mode,
all others will follow along. This is clearly
undesirable, since the new one might switch to
no-HT while another one is operating in HT.
Address this issue by keeping track of the HT
mode per interface, and allowing only changes
that are compatible, i.e. switching into HT40+
is not possible when another interface is in
HT40-, in that case the second one needs to
fall back to HT20.
Also, to allow drivers to know what's going on,
store the per-interface HT mode (channel type)
in the virtual interface's bss_conf.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Currently (all tested with hwsim) you can do stupid
things like setting up an AP on a certain channel,
then adding another virtual interface and making
that associate on another channel -- this will make
the beaconing to move channel but obviously without
the necessary IEs data update.
In order to improve this situation, first make the
configuration APIs (cfg80211 and nl80211) aware of
multi-channel operation -- we'll eventually need
that in the future anyway. There's one userland API
change and one API addition. The API change is that
now SET_WIPHY must be called with virtual interface
index rather than only wiphy index in order to take
effect for that interface -- luckily all current
users (hostapd) do that. For monitor interfaces, the
old setting is preserved, but monitors are always
slaved to other devices anyway so no guarantees.
The second userland API change is the introduction
of a per virtual interface SET_CHANNEL command, that
hostapd should use going forward to make it easier
to understand what's going on (it can automatically
detect a kernel with this command).
Other than mac80211, no existing cfg80211 drivers
are affected by this change because they only allow
a single virtual interface.
mac80211, however, now needs to be aware that the
channel settings are per interface now, and needs
to disallow (for now) real multi-channel operation,
which is another important part of this patch.
One of the immediate benefits is that you can now
start hostapd to operate on a hardware that already
has a connection on another virtual interface, as
long as you specify the same channel.
Note that two things are left unhandled (this is an
improvement -- not a complete fix):
* different HT/no-HT modes
currently you could start an HT AP and then
connect to a non-HT network on the same channel
which would configure the hardware for no HT;
that can be fixed fairly easily
* CSA
An AP we're connected to on a virtual interface
might indicate switching channels, and in that
case we would follow it, regardless of how many
other interfaces are operating; this requires
more effort to fix but is pretty rare after all
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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When reconfiguring an interface due to a previous
hardware restart, mac80211 will currently include
the new IBSS flag on non-IBSS interfaces which may
confuse drivers.
Instead of doing the ~0 trick, simply spell out
which things are going to be reconfigured.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-next-2.6
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Restore the rcu_dereference() calls in conntrack/expectation notifier
and logger registration/unregistration, but use the _protected variant,
which will be required by the upcoming __rcu annotations.
Based on patch by Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Conflicts:
net/bridge/br_device.c
net/bridge/br_forward.c
Signed-off-by: Patrick McHardy <kaber@trash.net>
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===================================================
[ INFO: suspicious rcu_dereference_check() usage. ]
---------------------------------------------------
include/net/netfilter/nf_conntrack_l3proto.h:92 invoked rcu_dereference_check()
without protection!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
2 locks held by iptables/3197:
#0: (sk_lock-AF_INET){+.+.+.}, at: [<ffffffff8149bd8c>]
ip_setsockopt+0x7c/0xa0
#1: (&xt[i].mutex){+.+.+.}, at: [<ffffffff8148a5fe>]
xt_find_table_lock+0x3e/0x110
stack backtrace:
Pid: 3197, comm: iptables Not tainted 2.6.34-rc4 #2
Call Trace:
[<ffffffff8105e2e8>] lockdep_rcu_dereference+0xb8/0xc0
[<ffffffff8147fb3b>] nf_ct_l3proto_module_put+0x6b/0x70
[<ffffffff8148d891>] state_mt_destroy+0x11/0x20
[<ffffffff814d3baf>] cleanup_match+0x2f/0x50
[<ffffffff814d3c63>] cleanup_entry+0x33/0x90
[<ffffffff814d5653>] ? __do_replace+0x1a3/0x210
[<ffffffff814d564c>] __do_replace+0x19c/0x210
[<ffffffff814d651a>] do_ipt_set_ctl+0x16a/0x1b0
[<ffffffff8147a610>] nf_sockopt+0x60/0xa0
...
The __nf_ct_l3proto_find() call doesn't actually need rcu read side
protection since the caller holds a reference to the protocol. Use
rcu_read_lock() anyways to avoid the warning.
Kernel bugzilla #15781: https://bugzilla.kernel.org/show_bug.cgi?id=15781
Reported-by: Christian Casteyde <casteyde.christian@free.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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The message might be falsely triggered by non-H.323 traffic on port
1720.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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I suspect an unfortunatly series of events occuring under a DDoS
attack, in function __nf_conntrack_find() nf_contrack_core.c.
Adding a stats counter to see if the search is restarted too often.
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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We want to be able to use CONFIG_DYNAMIC_DEBUG in netfilter code, switch
the few existing pr_devel() calls to pr_debug().
Signed-off-by: Patrick McHardy <kaber@trash.net>
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The jumpstack allocation needs to be moved out of the critical region.
Corrects this notice:
BUG: sleeping function called from invalid context at mm/slub.c:1705
[ 428.295762] in_atomic(): 1, irqs_disabled(): 0, pid: 9111, name: iptables
[ 428.295771] Pid: 9111, comm: iptables Not tainted 2.6.34-rc1 #2
[ 428.295776] Call Trace:
[ 428.295791] [<c012138e>] __might_sleep+0xe5/0xed
[ 428.295801] [<c019e8ca>] __kmalloc+0x92/0xfc
[ 428.295825] [<f865b3bb>] ? xt_jumpstack_alloc+0x36/0xff [x_tables]
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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PPPoE traffic
The MTU for IP traffic encapsulated inside PPPoE traffic is smaller
than the MTU of the Ethernet device (1500). Connection tracking
gathers all IP packets and sometimes will refragment them in
ip_fragment(). We then need to subtract the length of the
encapsulating header from the mtu used in ip_fragment(). The check in
br_nf_dev_queue_xmit() which determines if ip_fragment() has to be
called is also updated for the PPPoE-encapsulated packets.
nf_bridge_copy_header() is also updated to make sure the PPPoE data
length field has the correct value.
Signed-off-by: Bart De Schuymer <bdschuym@pandora.be>
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Conflicts:
Documentation/feature-removal-schedule.txt
net/ipv6/netfilter/ip6t_REJECT.c
net/netfilter/xt_limit.c
Signed-off-by: Patrick McHardy <kaber@trash.net>
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Replace the runtime oif name resolving by netdevice notifier based
resolving. When an oif is given, a netdevice notifier is registered
to resolve the name on NETDEV_REGISTER or NETDEV_CHANGE and unresolve
it again on NETDEV_UNREGISTER or NETDEV_CHANGE to a different name.
Signed-off-by: Patrick McHardy <kaber@trash.net>
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