The time until the channel switch is in TU,
not in milliseconds, so use TU_TO_EXP_TIME()
to correctly program the timer.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Clean up the CSA handling code by moving some
of it out of the if and using a C99 initializer
for the struct passed to the driver method.
While at it, also add a comment that we should
wait for a beacon after switching the channel.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Support getting A-MPDU status information from the
drivers and reporting it to userspace via radiotap
in the standard fields.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Define the A-MPDU status field in radiotap, also
update the radiotap parser for it and the MCS field
that was apparently missed last time.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
In IBSS it is possible that the supported rates set for a station changes over
time (e.g. it gets first initialised as an empty set because of no available
information about rates and updated later). In this case the driver has to be
notified about the change in order to update its internal table accordingly (if
needed).
This behaviour is needed by all those drivers that handle rc internally but
leave stations management to mac80211
Reported-by: Gui Iribarren <gui@altermundi.net>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
[Johannes - add docs, validate IBSS mode only, fix compilation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Use skb_queue_walk_safe instead, and fix a few issues:
- didn't free old skbs on moving
- didn't react to failed skb alloc
- needlessly held a local pointer to the destination frame queue
- didn't check destination queue length before adding skb
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Since all we really want is just to iterate over all skbs, do just that
and avoid (de)queueing to a clusmy tmpq.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This could take a while (100ms+) and may delay sending assoc resp
in AP mode with WPS or P2P GO (as setting the probe resp takes place
there). We've encountered situations where the delay was big enough
to cause connection problems with devices like Galaxy Nexus.
Switch to using call_rcu with a free handler.
[Arik - rework to use plain buffer and instead of skb]
Signed-off-by: Eyal Shapira <eyal@wizery.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Locking the rtnl was added to nf_conntrack_l{3,4}_proto_unregister()
for walking the network namespace list. This is not done anymore since
we have proper namespace support in the protocols now, so we don't
need to take the RTNL anymore.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit removes the sk_rx_dst_set calls from
tcp_create_openreq_child(), because at that point the icsk_af_ops
field of ipv6_mapped TCP sockets has not been set to its proper final
value.
Instead, to make sure we get the right sk_rx_dst_set variant
appropriate for the address family of the new connection, we have
tcp_v{4,6}_syn_recv_sock() directly call the appropriate function
shortly after the call to tcp_create_openreq_child() returns.
This also moves inet6_sk_rx_dst_set() to avoid a forward declaration
with the new approach.
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Reported-by: Artem Savkov <artem.savkov@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix kernel-doc warning:
Warning(net/core/dev.c:5745): No description found for parameter 'dev'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
This netconsole_target_put() is obviously redundant, and it
causes a kernel segfault when removing a bridge device which has
netconsole running on it.
This is caused by:
commit 8d8fc29d02
Author: Amerigo Wang <amwang@redhat.com>
Date: Thu May 19 21:39:10 2011 +0000
netpoll: disable netpoll when enslave a device
Cc: David Miller <davem@davemloft.net>
(for all 3.x stable releases)
Cc: stable@vger.kernel.org
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When getting clock, give a chance to the CPUs without DT support,
which use Common Clock Framework, such as Loongson1B.
Signed-off-by: Kelvin Cheung <keguang.zhang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In net/caif/chnl_net.c::chnl_recv_cb() we call skb_header_pointer()
which may return NULL, but we do not check for a NULL pointer before
dereferencing it.
This patch adds such a NULL check and properly free's allocated memory
and return an error (-EINVAL) on failure - much better than crashing..
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pable Neira Ayuso says:
====================
The following five patches contain fixes for 3.6-rc, they are:
* Two fixes for message parsing in the SIP conntrack helper, from
Patrick McHardy.
* One fix for the SIP helper introduced in the user-space cthelper
infrastructure, from Patrick McHardy.
* fix missing appropriate locking while modifying one conntrack entry
from the nfqueue integration code, from myself.
* fix possible access to uninitiliazed timer in the nf_conntrack
expectation infrastructure, from myself.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This is resolved by two things:
1) allow dev_addr of different length than ETH_ALEN
2) during port add, check for dev->type and change it if necessary
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
If a packet is emitted on one socket in one group of fanout sockets,
it is transmitted again. It is thus read again on one of the sockets
of the fanout group. This result in a loop for software which
generate packets when receiving one.
This retransmission is not the intended behavior: a fanout group
must behave like a single socket. The packet should not be
transmitted on a socket if it originates from a socket belonging
to the same fanout group.
This patch fixes the issue by changing the transmission check to
take fanout group info account.
Reported-by: Aleksandr Kotov <a1k@mail.ru>
Signed-off-by: Eric Leblond <eric@regit.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
It's possible that these amps are settable somehow, e g through
secret codec verbs, but for now, don't create the controls (as
they won't be working anyway, and cause errors in amixer).
Cc: stable@kernel.org
BugLink: https://bugs.launchpad.net/bugs/1038651
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret;
expression e1,e2;
@@
if (ret < 0)
{ ... return ret; }
... when != ret = e1
when forall
*if(...)
{
... when != ret = e2
* return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Move up the initialization of rc so that failure of pci_alloc_consistent
returns -ENOMEM as well.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret;
expression e1,e2;
@@
if (ret < 0)
{ ... return ret; }
... when != ret = e1
when forall
*if(...)
{
... when != ret = e2
* return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret;
expression e1,e2;
@@
if (ret < 0)
{ ... return ret; }
... when != ret = e1
when forall
*if(...)
{
... when != ret = e2
* return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Peter P Waskiewicz Jr says:
====================
This series contains multiple updates to the ixgbe driver.
The following are changes since commit 02644a1745:
sctp: fix bogus if statement in sctp_auth_recv_cid()
and are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/ppwaskie/net-next master
Alexander Duyck (9):
ixgbe: Remove code that was initializing Rx page offset
ixgbe: combine ixgbe_add_rx_frag and ixgbe_can_reuse_page
ixgbe: Only use double buffering if page size is less than 8K
ixgbe: Have the CPU take ownership of the buffers sooner
ixgbe: Make pull tail function separate from rest of cleanup_headers
ixgbe: Copybreak sooner to avoid get_page/put_page and offset change
overhead
ixgbe: Make allocating skb and placing data in it a separate function
ixgbe: Roll RSC code into non-EOP code
ixgbe: Rewrite code related to configuring IFCS bit in Tx descriptor
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Gets rid of the need for users to specify the maximum number of
name publications supported by TIPC. TIPC now automatically provides
support for the maximum number of name publications to 65535.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gets rid of the need for users to specify the maximum number of
name subscriptions supported by TIPC. TIPC now automatically provides
support for the maximum number of name subscriptions to 65535.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Added to the following:
- tipc_random
- tipc_own_addr
- tipc_max_ports
- tipc_net_id
- tipc_remote_management
- handler_enabled
The above global variables are read often, but written rarely. Use
__read_mostly to prevent them being on the same cacheline as another
variable which is written to often, which would cause cacheline
bouncing.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is nothing changing this variable dynamically, so change
it to a macro to make that more obvious when reading the code.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Since now tipc_net_start() always returns a success code - 0, its
return value type should be changed from integer to void, which can
avoid unnecessary check for its return value.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
After eliminating the mechanism which checks whether all letters
in media name string are within a given character set, the
media_name_valid routine becomes trivial. It is also only
used once, so it is unnecessary to keep it as a separate function.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is no real reason to check whether all letters in the given
media name and network interface name are within the character set
defined in tipc_alphabet array. Even if we eliminate the checking,
the rest of checking conditions in tipc_enable_bearer() can ensure
we do not enable an invalid or illegal bearer.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When the lockdep validator is enabled, it will report the below
warning when we enable a TIPC bearer:
[ INFO: possible irq lock inversion dependency detected ]
---------------------------------------------------------
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(ptype_lock);
local_irq_disable();
lock(tipc_net_lock);
lock(ptype_lock);
<Interrupt>
lock(tipc_net_lock);
*** DEADLOCK ***
the shortest dependencies between 2nd lock and 1st lock:
-> (ptype_lock){+.+...} ops: 10 {
[...]
SOFTIRQ-ON-W at:
[<c1089418>] __lock_acquire+0x528/0x13e0
[<c108a360>] lock_acquire+0x90/0x100
[<c1553c38>] _raw_spin_lock+0x38/0x50
[<c14651ca>] dev_add_pack+0x3a/0x60
[<c182da75>] arp_init+0x1a/0x48
[<c182dce5>] inet_init+0x181/0x27e
[<c1001114>] do_one_initcall+0x34/0x170
[<c17f7329>] kernel_init+0x110/0x1b2
[<c155b6a2>] kernel_thread_helper+0x6/0x10
[...]
... key at: [<c17e4b10>] ptype_lock+0x10/0x20
... acquired at:
[<c108a360>] lock_acquire+0x90/0x100
[<c1553c38>] _raw_spin_lock+0x38/0x50
[<c14651ca>] dev_add_pack+0x3a/0x60
[<c8bc18d2>] enable_bearer+0xf2/0x140 [tipc]
[<c8bb283a>] tipc_enable_bearer+0x1ba/0x450 [tipc]
[<c8bb3a04>] tipc_cfg_do_cmd+0x5c4/0x830 [tipc]
[<c8bbc032>] handle_cmd+0x42/0xd0 [tipc]
[<c148e802>] genl_rcv_msg+0x232/0x280
[<c148d3f6>] netlink_rcv_skb+0x86/0xb0
[<c148e5bc>] genl_rcv+0x1c/0x30
[<c148d144>] netlink_unicast+0x174/0x1f0
[<c148ddab>] netlink_sendmsg+0x1eb/0x2d0
[<c1456bc1>] sock_aio_write+0x161/0x170
[<c1135a7c>] do_sync_write+0xac/0xf0
[<c11360f6>] vfs_write+0x156/0x170
[<c11361e2>] sys_write+0x42/0x70
[<c155b0df>] sysenter_do_call+0x12/0x38
[...]
}
-> (tipc_net_lock){+..-..} ops: 4 {
[...]
IN-SOFTIRQ-R at:
[<c108953a>] __lock_acquire+0x64a/0x13e0
[<c108a360>] lock_acquire+0x90/0x100
[<c15541cd>] _raw_read_lock_bh+0x3d/0x50
[<c8bb874d>] tipc_recv_msg+0x1d/0x830 [tipc]
[<c8bc195f>] recv_msg+0x3f/0x50 [tipc]
[<c146a5fa>] __netif_receive_skb+0x22a/0x590
[<c146ab0b>] netif_receive_skb+0x2b/0xf0
[<c13c43d2>] pcnet32_poll+0x292/0x780
[<c146b00a>] net_rx_action+0xfa/0x1e0
[<c103a4be>] __do_softirq+0xae/0x1e0
[...]
}
>From the log, we can see three different call chains between
CPU0 and CPU1:
Time 0 on CPU0:
kernel_init()->inet_init()->dev_add_pack()
At time 0, the ptype_lock is held by CPU0 in dev_add_pack();
Time 1 on CPU1:
tipc_enable_bearer()->enable_bearer()->dev_add_pack()
At time 1, tipc_enable_bearer() first holds tipc_net_lock, and then
wants to take ptype_lock to register TIPC protocol handler into the
networking stack. But the ptype_lock has been taken by dev_add_pack()
on CPU0, so at this time the dev_add_pack() running on CPU1 has to be
busy looping.
Time 2 on CPU0:
netif_receive_skb()->recv_msg()->tipc_recv_msg()
At time 2, an incoming TIPC packet arrives at CPU0, hence
tipc_recv_msg() will be invoked. In tipc_recv_msg(), it first wants
to hold tipc_net_lock. At the moment, below scenario happens:
On CPU0, below is our sequence of taking locks:
lock(ptype_lock)->lock(tipc_net_lock)
On CPU1, our sequence of taking locks looks like:
lock(tipc_net_lock)->lock(ptype_lock)
Obviously deadlock may happen in this case.
But please note the deadlock possibly doesn't occur at all when the
first TIPC bearer is enabled. Before enable_bearer() -- running on
CPU1 does not hold ptype_lock, so the TIPC receive handler (i.e.
recv_msg()) is not registered successfully via dev_add_pack(), so
the tipc_recv_msg() cannot be called by recv_msg() even if a TIPC
message comes to CPU0. But when the second TIPC bearer is
registered, the deadlock can perhaps really happen.
To fix it, we will push the work of registering TIPC protocol
handler into workqueue context. After the change, both paths taking
ptype_lock are always in process contexts, thus, the deadlock should
never occur.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ethernet media initialization is only done when TIPC is started or
switched to network mode. So the initialization of the network device
notifier structure can be moved out of this function and done
statically instead.
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reported value is the same reported by the FANOUT getsockoption, but
unlike it, the absent fanout setup results in absent nlattr, rather
than in nlattr with zero value. This is done so, since zero fanout
report may mean both -- no fanout, and fanout with both id and type zero.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
One extension bit may result in two nlattrs -- one per ring type.
If some ring type is not configured, then the respective nlatts
will be empty.
The structure reported contains the data, that is given to the
corresponding ring setup socket option.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is a one byte hole between p->hop_limit and p->flowinfo where
stack memory is leaked to the user. This was introduced in c12b395a46
"gre: Support GRE over IPv6".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Newer firmware versions for the Pantech UML290 use a different
subclass ID. The Windows driver match on both IDs, so we do
that as well.
The ZTE (Vodafone) K5006-Z is a new device.
Cc: Dan Williams <dcbw@redhat.com>
Cc: Thomas Schäfer <tschaefer@t-online.de>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mdio-mux driver scans all child mdio nodes, without regard to whether
the node is actually used. Some device trees include all possible
mdio-mux nodes and rely on the boot loader to disable those that are not
present, based on some run-time configuration. Those nodes need to be
skipped.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Macro for_each_child_of_node() makes it easy to iterate over all of the
children for a given device tree node, including those nodes that are
marked as unavailable (i.e. status = "disabled").
Introduce for_each_available_child_of_node(), which is like
for_each_child_of_node(), but it automatically skips unavailable nodes.
This also requires the introduction of helper function
of_get_next_available_child(), which returns the next available child
node.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Initialize ret before returning on failure, as done elsewhere in the
function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Initialize rc before returning on failure, as done elsewhere in the
function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Initialize err before returning on failure, as done elsewhere in the
function.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
In the first case, the second test of whether retval is negative is
redundant. It is dropped and the previous and subsequent tests are
combined.
In the second case, add an initialization of retval on failure of ioremap.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Initialize retval before returning from a failed call to ioremap.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Fix kernel-doc warning in <sound/pcm.h> and add function name to make
the kernel-doc notation complete.
Warning(include/sound/pcm.h:1081): No description found for parameter 'substream'
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
