Commit Graph

12708 Commits

Author SHA1 Message Date
David S. Miller
3ee40c376a Merge branch 'linux-2.6.31.y' of git://git.kernel.org/pub/scm/linux/kernel/git/inaky/wimax 2009-06-11 17:11:33 -07:00
Patrick McHardy
24992eacd8 netfilter: ip_tables: fix build error
Fix build error introduced by commit bb70dfa5 (netfilter: xtables:
consolidate comefrom debug cast access):

net/ipv4/netfilter/ip_tables.c: In function 'ipt_do_table':
net/ipv4/netfilter/ip_tables.c:421: error: 'comefrom' undeclared (first use in this function)
net/ipv4/netfilter/ip_tables.c:421: error: (Each undeclared identifier is reported only once
net/ipv4/netfilter/ip_tables.c:421: error: for each function it appears in.)

Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-12 01:53:09 +02:00
Inaky Perez-Gonzalez
d2f4c10544 wimax: fix warning caused by not checking retval of rfkill_set_hw_state()
Caused by an API update. The return value can be safely ignored, as
there is notthing we can do with it.

Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
2009-06-11 11:12:48 -07:00
Patrick McHardy
334a47f634 netfilter: nf_ct_tcp: fix up build after merge
Replace the last occurence of tcp_lock by the per-conntrack lock.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-11 16:16:09 +02:00
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
David S. Miller
bb400801c2 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-next-2.6 2009-06-11 05:47:43 -07:00
Timo Teras
5ef12d98a1 neigh: fix state transition INCOMPLETE->FAILED via Netlink request
The current code errors out the INCOMPLETE neigh entry skb queue only from
the timer if maximum probes have been attempted and there has been no reply.
This also causes the transtion to FAILED state.

However, the neigh entry can be also updated via Netlink to inform that the
address is unavailable.  Currently, neigh_update() just stops the timers and
leaves the pending skb's unreleased. This results that the clean up code in
the timer callback is never called, preventing also proper garbage collection.

This fixes neigh_update() to process the pending skb queue immediately if
INCOMPLETE -> FAILED state transtion occurs due to a Netlink request.

Signed-off-by: Timo Teras <timo.teras@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-11 04:16:28 -07:00
Eric Dumazet
2b85a34e91 net: No more expensive sock_hold()/sock_put() on each tx
One of the problem with sock memory accounting is it uses
a pair of sock_hold()/sock_put() for each transmitted packet.

This slows down bidirectional flows because the receive path
also needs to take a refcount on socket and might use a different
cpu than transmit path or transmit completion path. So these
two atomic operations also trigger cache line bounces.

We can see this in tx or tx/rx workloads (media gateways for example),
where sock_wfree() can be in top five functions in profiles.

We use this sock_hold()/sock_put() so that sock freeing
is delayed until all tx packets are completed.

As we also update sk_wmem_alloc, we could offset sk_wmem_alloc
by one unit at init time, until sk_free() is called.
Once sk_free() is called, we atomic_dec_and_test(sk_wmem_alloc)
to decrement initial offset and atomicaly check if any packets
are in flight.

skb_set_owner_w() doesnt call sock_hold() anymore

sock_wfree() doesnt call sock_put() anymore, but check if sk_wmem_alloc
reached 0 to perform the final freeing.

Drawback is that a skb->truesize error could lead to unfreeable sockets, or
even worse, prematurely calling __sk_free() on a live socket.

Nice speedups on SMP. tbench for example, going from 2691 MB/s to 2711 MB/s
on my 8 cpu dev machine, even if tbench was not really hitting sk_refcnt
contention point. 5 % speedup on a UDP transmit workload (depends
on number of flows), lowering TX completion cpu usage.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-11 02:55:43 -07:00
David S. Miller
e5241c448f ieee802154: Use '%Zu' printf format for size_t.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-11 02:10:19 -07:00
David S. Miller
84503ddd65 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-06-10 23:41:43 -07:00
Linus Torvalds
8623661180 Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (244 commits)
  Revert "x86, bts: reenable ptrace branch trace support"
  tracing: do not translate event helper macros in print format
  ftrace/documentation: fix typo in function grapher name
  tracing/events: convert block trace points to TRACE_EVENT(), fix !CONFIG_BLOCK
  tracing: add protection around module events unload
  tracing: add trace_seq_vprint interface
  tracing: fix the block trace points print size
  tracing/events: convert block trace points to TRACE_EVENT()
  ring-buffer: fix ret in rb_add_time_stamp
  ring-buffer: pass in lockdep class key for reader_lock
  tracing: add annotation to what type of stack trace is recorded
  tracing: fix multiple use of __print_flags and __print_symbolic
  tracing/events: fix output format of user stack
  tracing/events: fix output format of kernel stack
  tracing/trace_stack: fix the number of entries in the header
  ring-buffer: discard timestamps that are at the start of the buffer
  ring-buffer: try to discard unneeded timestamps
  ring-buffer: fix bug in ring_buffer_discard_commit
  ftrace: do not profile functions when disabled
  tracing: make trace pipe recognize latency format flag
  ...
2009-06-10 19:53:40 -07:00
Johannes Berg
2f0accc135 cfg80211: fix rfkill locking problem
rfkill currently requires a global lock within the
rfkill_register() function, and holds that lock over
calls to the set_block() methods. This means that we
cannot hold a lock around rfkill_register() that we
also require in set_block(), directly or indirectly.
Fix cfg80211 to register rfkill outside the block
locked by its global lock. Much of what cfg80211 does
in the locked block doesn't need to be locked anyway.

Reported-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:41 -04:00
Johannes Berg
4e751843d4 mac80211: disable PS while probing AP
When associated, but probing the AP because we detected
beacon loss, we need to disable powersave to be able to
receive the probe response. Change the code to do that by
checking whether we're trying to probe when determining
the possibility of going into PS, and recalculate the PS
ability at the necessary spots.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:41 -04:00
Luis R. Rodriguez
43f7853180 mac80211: disable moving between PS modes during scan
We don't want to trigger moving between PS mode during scan,
because then we will sometimes end up sending nullfunc frames
during scan. We're supposed to only send one prior to scan
and after scan.

This fixes an oops which occured due to an assert in ath9k:

http://marc.info/?l=linux-wireless&m=124277331319024

The assert was happening because the rate control algorithm
figures it should find at least one valid dual stream or
single stream rate. Since we allow mac80211 to send nullfunc
frames during scan and dynamic PS was enabled at times we ended
up trying to send nullfunc frames for the target sta on the
wrong band for which we have no valid rate to communicate with
it. This breaks the assumptions in rate control.

We determine we also need to disable moving between PS modes
when not associated so lets just add that now as well, and we
should not have a ps_sdata when that interface cannot actually
go into PS because it's not associated.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:40 -04:00
Johannes Berg
27004b10ce mac80211: clean up return value of __ieee80211_parse_tx_radiotap
The return type has more than two values, but it can validly
only ever return TX_DROP and TX_CONTINUE, so use a bool
instead of ieee80211_tx_result.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:39 -04:00
Johannes Berg
0bffe40f21 mac80211: don't use master netdev name
Always use the wiphy name instead.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:39 -04:00
Vasanthakumar Thiagarajan
736708bd04 mac80211: Fix the way ADDBA request count being modified
addba_req_num[tid] is supposed to have the count of consecutive
addba request attempts on 'tid' which failed. This count is checked
against a retry threshold (3 times) before starting the addba negotiation.
This patch fixes the way this addba count is incremented/reset and thereby
avoids indefinite addba attempts.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:38 -04:00
Luis R. Rodriguez
558f6d3229 cfg80211: fix for duplicate response for driver reg request
As Pavel puts userspace can be stupid and should not
cause kernel crashes. In this case Pavel was able to
find a crash here but unable to reproduce. Either way
lets deal with this.

This should fix:

------------[ cut here ]------------
kernel BUG at /home/proski/src/linux-2.6/net/wireless/reg.c:2132!
Oops: Exception in kernel mode, sig: 5 [#1]
PowerMac
Modules linked in: ath5k ath [last unloaded: scsi_wait_scan]
NIP: c02f3eac LR: c02f3d08 CTR: 00000000
REGS: ef107aa0 TRAP: 0700   Not tainted  (2.6.30-rc8-wl)
MSR: 00029032 <EE,ME,CE,IR,DR>  CR: 88002442  XER: 20000000
TASK = ef84acb0[834] 'crda' THREAD: ef106000
GPR00: ef953840 ef107b50 ef84acb0 ef1380bc 00000006 c035a5c8 ef107b90 c035a5c8
GPR08: 00080005 efb68980 c0445628 ef130004 28002422 10019ce0 10012d3c 00000001
GPR16: 1070b2ac 00000005 48023558 1070b380 4802304c 00000000 ef107ddc c035a5c8
GPR24: ef107b78 c0443350 ef8bcb00 00000005 ef138080 c04a6a70 c04a0000 ef8bcb00
NIP [c02f3eac] set_regdom+0x4c4/0x4ec
LR [c02f3d08] set_regdom+0x320/0x4ec
Call Trace:
[ef107b50] [c02f3d08] set_regdom+0x320/0x4ec (unreliable)
[ef107b70] [c02f9d10] nl80211_set_reg+0x140/0x2d0
[ef107bc0] [c02aa2b8] genl_rcv_msg+0x204/0x228
[ef107c10] [c02a97cc] netlink_rcv_skb+0xe8/0x10c
[ef107c30] [c02aa094] genl_rcv+0x3c/0x5c
[ef107c40] [c02a9050] netlink_unicast+0x308/0x36c
[ef107c80] [c02a92bc] netlink_sendmsg+0x208/0x2f0
[ef107cd0] [c0282048] sock_sendmsg+0xac/0xe4
[ef107db0] [c02822b4] sys_sendmsg+0x234/0x2d8
[ef107f00] [c0283a88] sys_socketcall+0x108/0x258
[ef107f40] [c0012790] ret_from_syscall+0x0/0x38

Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:37 -04:00
Alan Jenkins
908209c160 rfkill: don't impose global states on resume (just restore the previous states)
Once rfkill-input is disabled, the "global" states will only be used as
default initial states.

Since the states will always be the same after resume, we shouldn't
generate events on resume.

Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:37 -04:00
Alan Jenkins
b3fa1329ea rfkill: remove set_global_sw_state
rfkill_set_global_sw_state() (previously rfkill_set_default()) will no
longer be exported by the rewritten rfkill core.

Instead, platform drivers which can provide persistent soft-rfkill state
across power-down/reboot should indicate their initial state by calling
rfkill_set_sw_state() before registration.  Otherwise, they will be
initialized to a default value during registration by a set_block call.

We remove existing calls to rfkill_set_sw_state() which happen before
registration, since these had no effect in the old model.  If these
drivers do have persistent state, the calls can be put back (subject
to testing :-).  This affects hp-wmi and acer-wmi.

Drivers with persistent state will affect the global state only if
rfkill-input is enabled.  This is required, otherwise booting with
wireless soft-blocked and pressing the wireless-toggle key once would
have no apparent effect.  This special case will be removed in future
along with rfkill-input, in favour of a more flexible userspace daemon
(see Documentation/feature-removal-schedule.txt).

Now rfkill_global_states[n].def is only used to preserve global states
over EPO, it is renamed to ".sav".

Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:37 -04:00
Johannes Berg
8f77f3849c mac80211: do not pass PS frames out of mac80211 again
In order to handle powersave frames properly we had needed
to pass these out to the device queues again, and introduce
the skb->requeue bit. This, however, also has unnecessary
overhead by needing to 'clean up' already tried frames, and
this clean-up code is also buggy when software encryption
is used.

Instead of sending the frames via the master netdev queue
again, simply put them into the pending queue. This also
fixes a problem where frames for that particular station
could be reordered when some were still on the software
queues and older ones are re-injected into the software
queue after them.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:28:37 -04:00
Johannes Berg
b91d0e3640 rfkill: remove input Kconfig
Now that we added the ioctl, there's no need to ask
the user to configure this. We will keep it enabled
for now, and eventually swap the default to n. Also
let embedded users select it only if they need it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:27:54 -04:00
Johannes Berg
207ee16217 rfkill: print events when input handler is disabled/enabled
It is useful for debugging when we know if something disabled
the in-kernel rfkill input handler.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:27:54 -04:00
matthieu castet
dacb6f1d8f mac80211 : fix unaligned rx skb
mac80211 is checking is the skb is aligned on 32 bit boundary.
But it is checking against ethernet header, whereas Linux expect IP
header aligned.  And ethernet ether size is 6*2+2=14, so aligning
ethernet header make IP header unaligned.

Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:27:53 -04:00
Bob Copeland
5ee58d7e6a mac80211: fix minstrel single-rate memory corruption
The minstrel rate controller periodically looks up rate indexes in
a sampling table.  When accessing a specific row and column, minstrel
correctly does a bounds check which, on the surface, appears to handle
the case where mi->n_rates < 2.  However, mi->sample_idx is actually
defined as an unsigned, so the right hand side is taken to be a huge
positive number when negative, and the check will always fail.

Consequently, the RC will overrun the array and cause random memory
corruption when communicating with a peer that has only a single rate.
The max value of mi->sample_idx is around 25 so casting to int should
have no ill effects.

Without the change, uptime is a few minutes under load with an AP
that has a single hard-coded rate, and both the AP and STA could
potentially crash.  With the change, both lasted 12 hours with a
steady load.

Thanks to Ognjen Maric for providing the single-rate clue so I could
reproduce this.

This fixes http://bugzilla.kernel.org/show_bug.cgi?id=12490 on the
regression list (also http://bugzilla.kernel.org/show_bug.cgi?id=13000).

Cc: stable@kernel.org
Reported-by: Sergey S. Kostyliov <rathamahata@gmail.com>
Reported-by: Ognjen Maric <ognjen.maric@gmail.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-10 13:27:51 -04:00
Patrick McHardy
440f0d5885 netfilter: nf_conntrack: use per-conntrack locks for protocol data
Introduce per-conntrack locks and use them instead of the global protocol
locks to avoid contention. Especially tcp_lock shows up very high in
profiles on larger machines.

This will also allow to simplify the upcoming reliable event delivery patches.

Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-10 14:32:47 +02:00
Jesper Dangaard Brouer
bf12691d84 sunrpc/auth_gss: Call rcu_barrier() on module unload.
As the module uses rcu_call() we should make sure that all
rcu callback has been completed before removing the code.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-10 01:11:27 -07:00
Jesper Dangaard Brouer
eaa184a1a1 sctp: protocol.c call rcu_barrier() on unload.
On module unload call rcu_barrier(), this is needed as synchronize_rcu()
is not strong enough.  The kmem_cache_destroy() does invoke
synchronize_rcu() but it does not provide same protection.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-10 01:11:25 -07:00
Jesper Dangaard Brouer
382bfeec48 can: af_can.c use rcu_barrier() on module unload.
This module uses rcu_call() thus it should use rcu_barrier()
on module unload.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Acked-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-10 01:11:24 -07:00
Jesper Dangaard Brouer
67137f3cc7 nfnetlink_queue: Use rcu_barrier() on module unload.
This module uses rcu_call() thus it should use rcu_barrier() on module unload.

Also fixed a trivial typo 'nfetlink' -> 'nfnetlink' in comment.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-10 01:11:23 -07:00
Jesper Dangaard Brouer
6e327c11a9 8021q: Vlan driver should use rcu_barrier() on unload instead of syncronize_net()
The VLAN 8021q driver needs to call rcu_barrier() when unloading the module,
instead of syncronize_net().  This is needed to make sure that outstanding
call_rcu() callbacks have completed, before the callback function code is
removed on module unload.

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-10 01:11:22 -07:00
David S. Miller
0808dc8093 netfilter: Fix extra semi-colon in skb_walk_frags() changes.
Noticed by Jesper Dangaard Brouer

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 18:05:28 -07:00
Linus Torvalds
fd4d34295b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  cls_cgroup: Fix oops when user send improperly 'tc filter add' request
  r8169: fix crash when large packets are received
2009-06-09 08:47:27 -07:00
Laszlo Attila Toth
a31e1ffd22 netfilter: xt_socket: added new revision of the 'socket' match supporting flags
If the XT_SOCKET_TRANSPARENT flag is set, enabled 'transparent'
socket option is required for the socket to be matched.

Signed-off-by: Laszlo Attila Toth <panther@balabit.hu>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-09 15:16:34 +02:00
Sergey Lapin
2c21d11518 net: add NL802154 interface for configuration of 802.15.4 devices
Add a netlink interface for configuration of IEEE 802.15.4 device. Also this
interface specifies events notification sent by devices towards higher layers.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 05:25:33 -07:00
Sergey Lapin
9ec7671603 net: add IEEE 802.15.4 socket family implementation
Add support for communication over IEEE 802.15.4 networks. This implementation
is neither certified nor complete, but aims to that goal. This commit contains
only the socket interface for communication over IEEE 802.15.4 networks.
One can either send RAW datagrams or use SOCK_DGRAM to encapsulate data
inside normal IEEE 802.15.4 packets.

Configuration interface, drivers and software MAC 802.15.4 implementation will
follow.

Initial implementation was done by Maxim Gorbachyov, Maxim Osipov and Pavel
Smolensky as a research project at Siemens AG. Later the stack was heavily
reworked to better suit the linux networking model, and is now maitained
as an open project partially sponsored by Siemens.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 05:25:32 -07:00
Sergey Lapin
fcb94e4224 Add constants for the ieee 802.15.4 stack
IEEE 802.15.4 stack requires several constants to be defined/adjusted.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 05:25:30 -07:00
Jarek Poplawski
728bf09827 pkt_sched: Use PSCHED_SHIFT in PSCHED time conversion
Use PSCHED_SHIFT constant instead of '10' in PSCHED_US2NS() and
PSCHED_NS2US() macros to enable changing this value later.

Additionally use PSCHED_SHIFT in sch_hfsc SM_SHIFT and ISM_SHIFT
definitions. This part of the patch is based on feedback from
Patrick McHardy <kaber@trash.net>.

Reported-by: Antonio Almeida <vexwek@gmail.com>
Tested-by: Antonio Almeida <vexwek@gmail.com>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 05:25:29 -07:00
Eric Dumazet
0c27922e49 net: dev_addr_init() fix
commit f001fde5ea
(net: introduce a list of device addresses dev_addr_list (v6))
added one regression Vegard Nossum found in its testings.

With kmemcheck help, Vegard found some uninitialized memory
was read and reported to user, potentialy leaking kernel data.
( thread can be found on http://lkml.org/lkml/2009/5/30/177 )

dev_addr_init() incorrectly uses sizeof() operator. We were
initializing one byte instead of MAX_ADDR_LEN bytes.

Reported-by: Vegard Nossum <vegard.nossum@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 05:11:42 -07:00
Minoru Usui
52ea3a56a3 cls_cgroup: Fix oops when user send improperly 'tc filter add' request
I found a bug in cls_cgroup_change() in cls_cgroup.c.
cls_cgroup_change() expected tca[TCA_OPTIONS] was set from user space properly,
but tc in iproute2-2.6.29-1 (which I used) didn't set it.

In the current source code of tc in git, it set tca[TCA_OPTIONS].

  git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git

If we always use a newest iproute2 in git when we use cls_cgroup, 
we don't face this oops probably.
But I think, kernel shouldn't panic regardless of use program's behaviour. 

Signed-off-by: Minoru Usui <usui@mxm.nes.nec.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 04:03:09 -07:00
David S. Miller
d4fd3bc101 xfrm: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:24:07 -07:00
David S. Miller
1b003be39e sctp: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:24:07 -07:00
David S. Miller
5c313e9a77 phonet: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:24:06 -07:00
David S. Miller
343a99724e netfilter: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:23:58 -07:00
David S. Miller
4d9092bb41 ipv6: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:20:05 -07:00
David S. Miller
d7fcf1a5ca ipv4: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:19:37 -07:00
David S. Miller
285e42802b net/core/user_dma.c: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:19:10 -07:00
David S. Miller
fbb398a832 net/core/skbuff.c: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:18:59 -07:00
David S. Miller
4cf704fbea net/core/dev.c: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:18:51 -07:00
David S. Miller
5b1a002ade datagram: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:18:15 -07:00
David S. Miller
c32ba3f9b8 appletalk: Use frag list abstraction interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-09 00:17:44 -07:00
Evgeniy Polyakov
11eeef41d5 netfilter: passive OS fingerprint xtables match
Passive OS fingerprinting netfilter module allows to passively detect
remote OS and perform various netfilter actions based on that knowledge.
This module compares some data (WS, MSS, options and it's order, ttl, df
and others) from packets with SYN bit set with dynamically loaded OS
fingerprints.

Fingerprint matching rules can be downloaded from OpenBSD source tree
or found in archive and loaded via netfilter netlink subsystem into
the kernel via special util found in archive.

Archive contains library file (also attached), which was shipped
with iptables extensions some time ago (at least when ipt_osf existed
in patch-o-matic).

Following changes were made in this release:
 * added NLM_F_CREATE/NLM_F_EXCL checks
 * dropped _rcu list traversing helpers in the protected add/remove calls
 * dropped unneded structures, debug prints, obscure comment and check

Fingerprints can be downloaded from
http://www.openbsd.org/cgi-bin/cvsweb/src/etc/pf.os
or can be found in archive

Example usage:
-d switch removes fingerprints

Please consider for inclusion.
Thank you.

Passive OS fingerprint homepage (archives, examples):
http://www.ioremap.net/projects/osf

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-08 17:01:51 +02:00
Jan Kasprzak
f87fb666bb netfilter: nf_ct_icmp: keep the ICMP ct entries longer
Current conntrack code kills the ICMP conntrack entry as soon as
the first reply is received. This is incorrect, as we then see only
the first ICMP echo reply out of several possible duplicates as
ESTABLISHED, while the rest will be INVALID. Also this unnecessarily
increases the conntrackd traffic on H-A firewalls.

Make all the ICMP conntrack entries (including the replied ones)
last for the default of nf_conntrack_icmp{,v6}_timeout seconds.

Signed-off-by: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-08 15:53:43 +02:00
Marcel Holtmann
611b30f74b Bluetooth: Add native RFKILL soft-switch support for all devices
With the re-write of the RFKILL subsystem it is now possible to easily
integrate RFKILL soft-switch support into the Bluetooth subsystem. All
Bluetooth devices will now get automatically RFKILL support.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-06-08 14:50:01 +02:00
Marcel Holtmann
b4324b5dc5 Bluetooth: Remove pointless endian conversion helpers
The Bluetooth source uses some endian conversion helpers, that in the end
translate to kernel standard routines. So remove this obfuscation since it
is fully pointless.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-06-08 14:50:01 +02:00
Marcel Holtmann
47ec1dcd69 Bluetooth: Add basic constants for L2CAP ERTM support and use them
This adds the basic constants required to add support for L2CAP Enhanced
Retransmission feature.

Based on a patch from Nathan Holstein <nathan@lampreynetworks.com>

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-06-08 14:50:00 +02:00
Gustavo F. Padovan
af05b30bcb Bluetooth: Fix errors and warnings in L2CAP reported by checkpatch.pl
This patch fixes the errors without changing the l2cap.o binary:

 text    data     bss     dec     hex filename
18059     568       0   18627    48c3 l2cap.o.after
18059     568       0   18627    48c3 l2cap.o.before

Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-06-08 14:50:00 +02:00
Marcel Holtmann
44d0e48e8a Bluetooth: Remove unnecessary variable initialization
The initial value of err is not used until it is set to -ENOMEM. So just
remove the initialization completely.

Based on a patch from Gustavo F. Padovan <gustavo@las.ic.unicamp.br>

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-06-08 14:50:00 +02:00
Gustavo F. Padovan
589d274648 Bluetooth: Use macro for L2CAP hint mask on receiving config request
Using the L2CAP_CONF_HINT macro is easier to understand than using a
hardcoded 0x80 value.

Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-06-08 14:50:00 +02:00
Gustavo F. Padovan
8db4dc46dc Bluetooth: Use macros for L2CAP channel identifiers
Use macros instead of hardcoded numbers to make the L2CAP source code
more readable.

Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2009-06-08 14:49:59 +02:00
Tilman Schmidt
4e32997205 isdn: rename capi_ctr_reseted() to capi_ctr_down()
Change the name of the Kernel CAPI exported function capi_ctr_reseted()
to something representing its purpose better.

Impact: renaming, no functional change
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-08 00:45:50 -07:00
Figo.zhang
1d0ebfe7c9 net pkgen.c:fix no need for check
vfree() does its own 'NULL' check, so no need for check before
calling it.

Signed-off-by: Figo.zhang <figo1802@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-08 00:40:35 -07:00
Sridhar Samudrala
2faef52b72 net: Fix memcpy_toiovecend() to use the right offset
Increment the iovec base by the offset passed in for the initial
copy_to_user() in memcpy_to_iovecend().

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-08 00:25:39 -07:00
Sridhar Samudrala
d2d27bfd11 net: Fix skb_copy_datagram_from_iovec() to pass the right offset
I am working on enabling UFO between KVM guests using virtio-net and i have
some patches that i got working with 2.6.30-rc8. When i wanted to try them
with net-next-2.6, i noticed that virtio-net is not working with that tree.

After some debugging, it turned out to be several bugs in the recent patches
to fix aio with tun driver, specifically the following 2 commits.

http://git.kernel.org/?p=linux/kernel/git/davem/net-next-2.6.git;a=commitdiff;h=0a1ec07a67bd8b0033dace237249654d015efa21
http://git.kernel.org/?p=linux/kernel/git/davem/net-next-2.6.git;a=commitdiff;h=6f26c9a7555e5bcca3560919db9b852015077dae

Fix the call to memcpy_from_iovecend() in skb_copy_datagram_from_iovec
to pass the right iovec offset.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-08 00:25:38 -07:00
Eric Dumazet
042a53a9e4 net: skb_shared_info optimization
skb_dma_unmap() is quite expensive for small packets,
because we use two different cache lines from skb_shared_info.

One to access nr_frags, one to access dma_maps[0]

Instead of dma_maps being an array of MAX_SKB_FRAGS + 1 elements,
let dma_head alone in a new dma_head field, close to nr_frags,
to reduce cache lines misses.

Tested on my dev machine (bnx2 & tg3 adapters), nice speedup !

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-08 00:21:48 -07:00
Eric Dumazet
eae3f29cc7 net: num_dma_maps is not used
Get rid of num_dma_maps in struct skb_shared_info, as it seems unused.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-08 00:20:23 -07:00
Herbert Xu
5ff8dda303 net: Ensure partial checksum offset is inside the skb head
On Thu, Jun 04, 2009 at 09:06:00PM +1000, Herbert Xu wrote:
>
> tun: Optimise handling of bogus gso->hdr_len
>
> As all current versions of virtio_net generate a value for the
> header length that's too small, we should optimise this so that
> we don't copy it twice.  This can be done by ensuring that it is
> at least as large as the place where we'll write the checksum.
>
> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

With this applied we can strengthen the partial checksum check:

In skb_partial_csum_set we check to see if the checksum offset
is within the packet.  However, we really should check that it
is within the skb head as that's the only bit we can modify
without copying.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-08 00:20:19 -07:00
David S. Miller
b1bc81a0ef Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2009-06-07 04:24:21 -07:00
Florian Westphal
17f2f52be0 netfilter: ipt_MASQUERADE: remove redundant rwlock
The lock "protects" an assignment and a comparision of an integer.
When the caller of device_cmp() evaluates the result, nat->masq_index
may already have been changed (regardless if the lock is there or not).

So, the lock either has to be held during nf_ct_iterate_cleanup(),
or can be removed.

This does the latter.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-05 13:26:21 +02:00
Florian Westphal
10662aa308 netfilter: xt_NFQUEUE: queue balancing support
Adds support for specifying a range of queues instead of a single queue
id. Flows will be distributed across the given range.

This is useful for multicore systems: Instead of having a single
application read packets from a queue, start multiple
instances on queues x, x+1, .. x+n. Each instance can process
flows independently.

Packets for the same connection are put into the same queue.

Signed-off-by: Holger Eitzenberger <heitzenberger@astaro.com>
Signed-off-by: Florian Westphal <fwestphal@astaro.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-05 13:24:24 +02:00
Florian Westphal
61f5abcab1 netfilter: xt_NFQUEUE: use NFPROTO_UNSPEC
We can use wildcard matching here, just like
ab4f21e6fb ("xtables: use NFPROTO_UNSPEC
in more extensions").

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-05 13:18:07 +02:00
Johannes Berg
0c0c9e7076 wimax: depend on rfkill properly
My mistake, I should have added that when cleaning up
rfkill and changing wimax.

Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-04 10:58:15 -04:00
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
David S. Miller
a8c617eae4 Merge branch 'net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vxy/lksctp-dev 2009-06-03 21:43:52 -07:00
Rami Rosen
2307f866f5 ipv4: remove ip_mc_drop_socket() declaration from af_inet.c.
ip_mc_drop_socket() method is declared in linux/igmp.h, which
is included anyhow in af_inet.c. So there is no need for this declaration.
This patch removes it from af_inet.c.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-03 21:43:26 -07:00
Johannes Berg
0aa8204b46 cfg80211: fix Kconfig for users of cfg80211
* iwm doesn't depend on cfg80211 or wireless extensions
 * rndis wlan selects cfg80211 - needs to depend
 * mac80211 selects cfg80211 - needs to depend

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:09:08 -04:00
Johannes Berg
2ec2c68c11 rfkill: always init poll delayed work
The rfkill core didn't initialise the poll delayed work
because it assumed that polling was always done by specifying
the poll function. cfg80211, however, would like to start
polling only later, which is a valid use case and easy to
support, so change rfkill to always initialise the poll
delayed work and thus allow starting polling by calling the
rfkill_resume_polling() function after registration.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:15 -04:00
Luis R. Rodriguez
894df1cbc3 mac80211: removed unused variable in ieee80211_tx()
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:15 -04:00
Luis R. Rodriguez
7e189a12c2 mac80211: extend sta kdoc - explain when they are added
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:15 -04:00
Luis R. Rodriguez
60fd2b6701 cfg80211: make ieee80211_get_mesh_hdrlen() static
Fixes spares warning:
net/wireless/util.c:261:5: warning:
symbol 'ieee80211_get_mesh_hdrlen' was not declared. Should it be static?

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:15 -04:00
Johannes Berg
1f87f7d3a3 cfg80211: add rfkill support
To be easier on drivers and users, have cfg80211 register an
rfkill structure that drivers can access. When soft-killed,
simply take down all interfaces; when hard-killed the driver
needs to notify us and we will take down the interfaces
after the fact. While rfkilled, interfaces cannot be set UP.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:14 -04:00
Johannes Berg
6081162e2e rfkill: add function to query state
Sometimes it is necessary to know how the state is,
and it is easier to query rfkill than keep track of
it somewhere else, so add a function for that. This
could later be expanded to return hard/soft block,
but so far that isn't necessary.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:14 -04:00
Johannes Berg
7643a2c3fc cfg80211: move txpower wext from mac80211
This patch introduces new cfg80211 API to set the TX power
via cfg80211, puts the wext code into cfg80211 and updates
mac80211 to use all that. The -ENETDOWN bits are a hack but
will go away soon.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:14 -04:00
Johannes Berg
c64fb01627 rfkill: create useful userspace interface
The new code added by this patch will make rfkill create
a misc character device /dev/rfkill that userspace can use
to control rfkill soft blocks and get status of devices as
well as events when the status changes.

Using it is very simple -- when you open it you can read
a number of times to get the initial state, and every
further read blocks (you can poll) on getting the next
event from the kernel. The same structure you read is
also used when writing to it to change the soft block of
a given device, all devices of a given type, or all
devices.

This also makes CONFIG_RFKILL_INPUT selectable again in
order to be able to test without it present since its
functionality can now be replaced by userspace entirely
and distros and users may not want the input part of
rfkill interfering with their userspace code. We will
also write a userspace daemon to handle all that and
consequently add the input code to the feature removal
schedule.

In order to have rfkilld support both kernels with and
without CONFIG_RFKILL_INPUT (or new kernels after its
eventual removal) we also add an ioctl (that only exists
if rfkill-input is present) to disable rfkill-input.
It is not very efficient, but at least gives the correct
behaviour in all cases.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:14 -04:00
Johannes Berg
19d337dff9 rfkill: rewrite
This patch completely rewrites the rfkill core to address
the following deficiencies:

 * all rfkill drivers need to implement polling where necessary
   rather than having one central implementation

 * updating the rfkill state cannot be done from arbitrary
   contexts, forcing drivers to use schedule_work and requiring
   lots of code

 * rfkill drivers need to keep track of soft/hard blocked
   internally -- the core should do this

 * the rfkill API has many unexpected quirks, for example being
   asymmetric wrt. alloc/free and register/unregister

 * rfkill can call back into a driver from within a function the
   driver called -- this is prone to deadlocks and generally
   should be avoided

 * rfkill-input pointlessly is a separate module

 * drivers need to #ifdef rfkill functions (unless they want to
   depend on or select RFKILL) -- rfkill should provide inlines
   that do nothing if it isn't compiled in

 * the rfkill structure is not opaque -- drivers need to initialise
   it correctly (lots of sanity checking code required) -- instead
   force drivers to pass the right variables to rfkill_alloc()

 * the documentation is hard to read because it always assumes the
   reader is completely clueless and contains way TOO MANY CAPS

 * the rfkill code needlessly uses a lot of locks and atomic
   operations in locked sections

 * fix LED trigger to actually change the LED when the radio state
   changes -- this wasn't done before

Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad]
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:13 -04:00
Bob Copeland
0f6399c4c5 nl80211: use GFP_ATOMIC for michael mic failure message
nl80211_michael_mic_failure can be called in atomic context but
does a GFP_KERNEL allocation.  Fixes the error below:

[  126.793225] BUG: sleeping function called from invalid context at mm/slab.c:3055
[  126.793234] in_atomic(): 1, irqs_disabled(): 0, pid: 0, name: swapper
[  126.793241] 2 locks held by swapper/0:
[  126.793246]  #0:  (&sc->rxbuflock){+.-.+.}, at: [<f94e1b46>] ath5k_tasklet_rx+0x34/0x55e [ath5k]
[  126.793294]  #1:  (rcu_read_lock){.+.+.+}, at: [<f92872f3>] __ieee80211_rx+0x7e/0x563 [mac80211]
[  126.793342] Pid: 0, comm: swapper Not tainted 2.6.30-rc7-wl #124
[  126.793347] Call Trace:
[  126.793361]  [<c014499d>] ? __debug_show_held_locks+0x1e/0x20
[  126.793380]  [<c011e9a3>] __might_sleep+0x100/0x107
[  126.793386]  [<c018ea99>] kmem_cache_alloc+0x35/0x170
[  126.793393]  [<c02e8bb1>] ? __alloc_skb+0x2e/0x117
[  126.793397]  [<c014517d>] ? mark_held_locks+0x43/0x5b
[  126.793402]  [<c02e8bb1>] __alloc_skb+0x2e/0x117
[  126.793419]  [<f851a836>] nl80211_michael_mic_failure+0x2a/0x1fa [cfg80211]
[  126.793425]  [<c01453b8>] ? trace_hardirqs_on_caller+0xf6/0x130
[  126.793430]  [<c01453fd>] ? trace_hardirqs_on+0xb/0xd
[  126.793444]  [<f851b2b8>] cfg80211_michael_mic_failure+0x30/0x38 [cfg80211]
[  126.793463]  [<f928bf69>] mac80211_ev_michael_mic_failure+0xfd/0x108 [mac80211]
[  126.793480]  [<f9279fbd>] ieee80211_rx_h_michael_mic_verify+0xd4/0x117 [mac80211]
[  126.793499]  [<f9285ef3>] ieee80211_invoke_rx_handlers+0xdde/0x1963 [mac80211]
[  126.793505]  [<c0107152>] ? sched_clock+0x3f/0x64
[  126.793511]  [<c0107152>] ? sched_clock+0x3f/0x64
[  126.793516]  [<c01445d7>] ? trace_hardirqs_off+0xb/0xd
[  126.793521]  [<c0107152>] ? sched_clock+0x3f/0x64
[  126.793526]  [<c0146454>] ? __lock_acquire+0x62c/0x1271
[  126.793545]  [<f9286fbb>] __ieee80211_rx_handle_packet+0x543/0x564 [mac80211]
[  126.793564]  [<f9287757>] __ieee80211_rx+0x4e2/0x563 [mac80211]
[  126.793577]  [<f94e1ff6>] ath5k_tasklet_rx+0x4e4/0x55e [ath5k]
[  126.793583]  [<c0102b54>] ? restore_nocheck_notrace+0x0/0xe
[  126.793589]  [<c0129aa2>] tasklet_action+0x92/0xe5
[  126.793594]  [<c0129f22>] __do_softirq+0xb1/0x182
[  126.793599]  [<c012a023>] do_softirq+0x30/0x48
[  126.793603]  [<c012a19b>] irq_exit+0x3d/0x74
[  126.793609]  [<c0358016>] do_IRQ+0x76/0x8c
[  126.793613]  [<c010312e>] common_interrupt+0x2e/0x34
[  126.793618]  [<c014007b>] ? timer_list_show+0x277/0x939
[  126.793630]  [<f88eb321>] ? acpi_idle_enter_bm+0x266/0x291 [processor]
[  126.793636]  [<c02d00f6>] cpuidle_idle_call+0x6a/0x9c
[  126.793640]  [<c0101cc8>] cpu_idle+0x53/0x87
[  126.793645]  [<c0344510>] rest_init+0x6c/0x6e
[  126.793651]  [<c04dd74d>] start_kernel+0x286/0x28b
[  126.793656]  [<c04dd037>] __init_begin+0x37/0x3c

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:06:13 -04:00
Luis R. Rodriguez
729e9c7663 cfg80211: fix for duplicate userspace replies
This fixes an incorrect assumption (BUG_ON) made in
cfg80211 when handling country IE regulatory requests.
The assumption was that we won't try to call_crda()
twice for the same event and therefore we will not
recieve two replies through nl80211 for the regulatory
request. As it turns out it is true we don't call_crda()
twice for the same event, however, kobject_uevent_env()
*might* send the udev event twice and/or userspace can
simply process the udev event twice. We remove the BUG_ON()
and simply ignore the duplicate request.

For details refer to this thread:

http://marc.info/?l=linux-wireless&m=124149987921337&w=2

Cc: stable@kernel.org
Reported-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:12 -04:00
Johannes Berg
3b8bcfd5d3 net: introduce pre-up netdev notifier
NETDEV_UP is called after the device is set UP, but sometimes
it is useful to be able to veto the device UP. Introduce a
new NETDEV_PRE_UP notifier that can be used for exactly this.
The first use case will be cfg80211 denying interfaces to be
set UP if the device is known to be rfkill'ed.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:12 -04:00
Luis R. Rodriguez
86ab04c8c1 mac80211: handle -EALREADY on cfg80211 op assoc req
When the SME requests to associate to an open AP
ieee80211_sta_set_extra_ie() can be called with zero IE
length. When this happens or when the extra IE has already
been set -EALREADY is passed down and the supplicant will
complain that the operation is already in progress and it will
not let us associate. We correct this by treating -EALREADY
from ieee80211_sta_set_extra_ie() as a success just as we do
for wext.

Cc: Shan.Palanisamy@Atheros.com
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:11 -04:00
Johannes Berg
034d655ee7 cfg80211: disallow interfering with stations on non-AP (part 2)
On non-AP interfaces userspace has no business interfering with
the station management, this can confuse mac80211 (and other
drivers probably wouldn't support it anyway). Allow adding and
removing stations only on AP interfaces.

(Reconcile this w/ previous version of patch posted with same
subject... -- JWL)

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:10 -04:00
Johannes Berg
7ba10a8efe mac80211: fix transposed min/max CW values
I accidentally transposed these in the patch that "fixed" the defaults,
leading to extremely low throughput because of the huge min CW.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:10 -04:00
Johannes Berg
8fc0fee092 cfg80211: use key size constants
Instead of hardcoding the key length for validation, use the
constants Zhu Yi recently added and add one for AES_CMAC too.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:10 -04:00
Johannes Berg
362a415dce nl80211: bounce scan request back to userspace
When a scan finishes only the program that asked for it
knows what kind of scan it was; let's tell everybody else
about the scan parameters as well so they can evaluate
the result of the scan better. Also helps with debugging.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:10 -04:00
Johannes Berg
51b50fbeb5 cfg80211: validate AID of stations being added
We have some validation code in mac80211 but said code will
force an invalid AID to 0 which isn't a valid AID either;
instead require a valid AID (1-2007) to be passed in from
userspace in cfg80211 already. Also move the code before
the race comment since it can only be executed during STA
addition and thus is not racy.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:10 -04:00
Johannes Berg
e535c7566e mac80211: deprecate conf.beacon_int properly
Ivo has updated the driver to no longer use the change flag,
so we can remove that, but rt2x00 and ath5k still use the
actual value so let's mark it as deprecated too.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-03 14:05:09 -04:00
Vlad Yasevich
c6ba68a266 sctp: support non-blocking version of the new sctp_connectx() API
Prior implementation of the new sctp_connectx() call that returns
an association ID did not work correctly on non-blocking socket.
This is because we could not return both a EINPROGRESS error and
an association id.  This is a new implementation that supports this.

Originally from Ivan Skytte Jørgensen <isj-sctp@i1.dk

Signed-off-by: Ivan Skytte Jørgensen <isj-sctp@i1.dk
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2009-06-03 09:14:47 -04:00
Wei Yongjun
9919b455fc sctp: fix to choose alternate destination when retransmit ASCONF chunk
RFC 5061 Section 5.1 ASCONF Chunk Procedures said:

B4)  Re-transmit the ASCONF Chunk last sent and if possible choose an
     alternate destination address (please refer to [RFC4960],
     Section 6.4.1).  An endpoint MUST NOT add new parameters to this
     chunk; it MUST be the same (including its Sequence Number) as
     the last ASCONF sent.  An endpoint MAY, however, bundle an
     additional ASCONF with new ASCONF parameters with the next
     Sequence Number.  For details, see Section 5.5.

This patch fix to choose an alternate destination address when
re-transmit the ASCONF chunk, with some dup codes cleanup.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2009-06-03 09:14:46 -04:00
Jean-Mickael Guerin
d48e074dfd sctp: fix sack_timeout sysctl min and max types
sctp_sack_timeout is defined as int, but the sysctl's maxsize is set
to sizeof(long) and the min/max are defined as long.

Signed-off-by: jean-mickael.guerin@6wind.com
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2009-06-03 09:14:46 -04:00
Wei Yongjun
10a43cea7d sctp: fix panic when T4-rto timer expire on removed transport
If T4-rto timer is expired on a removed transport, kernel panic
will occur when we do failure management on that transport.
You can reproduce this use the following sequence:

Endpoint A                           Endpoint B
(ESTABLISHED)                        (ESTABLISHED)

            <-----------------      ASCONF
                                    (SRC=X)
ASCONF        ----------------->
(Delete IP Address = X)
            <-----------------      ASCONF-ACK
                                    (Success Indication)
            <-----------------      ASCONF
                                    (T4-rto timer expire)

This patch fixed the problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2009-06-03 09:14:46 -04:00
Wei Yongjun
6345b19985 sctp: fix panic when T2-shutdown timer expire on removed transport
If T2-shutdown timer is expired on a removed transport, kernel
panic will occur when we do failure management on that transport.
You can reproduce this use the following sequence:

  Endpoint A                           Endpoint B
  (ESTABLISHED)                        (ESTABLISHED)

                <-----------------      SHUTDOWN
                                        (SRC=X)
  ASCONF        ----------------->
  (Delete IP Address = X)
                <-----------------      ASCONF-ACK
                                        (Success Indication)
                <-----------------      SHUTDOWN
                                        (T2-shutdown timer expire)
This patch fixed the problem.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2009-06-03 09:14:46 -04:00