Commit Graph

24109 Commits

Author SHA1 Message Date
David S. Miller 5943634fc5 ipv4: Maintain redirect and PMTU info in struct rtable again.
Maintaining this in the inetpeer entries was not the right way to do
this at all.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:40:14 -07:00
David S. Miller 87a50699cb rtnetlink: Remove ts/tsage args to rtnl_put_cacheinfo().
Nobody provides non-zero values any longer.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:40:13 -07:00
David S. Miller 3e12939a2a inet: Kill FLOWI_FLAG_PRECOW_METRICS.
No longer needed.  TCP writes metrics, but now in it's own special
cache that does not dirty the route metrics.  Therefore there is no
longer any reason to pre-cow metrics in this way.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:40:12 -07:00
David S. Miller 1d861aa4b3 inet: Minimize use of cached route inetpeer.
Only use it in the absolutely required cases:

1) COW'ing metrics

2) ipv4 PMTU

3) ipv4 redirects

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:40:11 -07:00
David S. Miller 16d1839907 inet: Remove ->get_peer() method.
No longer used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:40:10 -07:00
David S. Miller b6242b9b45 tcp: Remove tw->tw_peer
No longer used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:40:09 -07:00
David S. Miller 81166dd6fa tcp: Move timestamps from inetpeer to metrics cache.
With help from Lin Ming.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:40:08 -07:00
David S. Miller 794785bf12 net: Don't report route RTT metric value in cache dumps.
We don't maintain it dynamically any longer, so reporting it would
be extremely misleading.  Report zero instead.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:40:06 -07:00
David S. Miller 51c5d0c4b1 tcp: Maintain dynamic metrics in local cache.
Maintain a local hash table of TCP dynamic metrics blobs.

Computed TCP metrics are no longer maintained in the route metrics.

The table uses RCU and an extremely simple hash so that it has low
latency and low overhead.  A simple hash is legitimate because we only
make metrics blobs for fully established connections.

Some tweaking of the default hash table sizes, metric timeouts, and
the hash chain length limit certainly could use some tweaking.  But
the basic design seems sound.

With help from Eric Dumazet and Joe Perches.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 22:39:57 -07:00
David S. Miller ab92bb2f67 tcp: Abstract back handling peer aliveness test into helper function.
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 20:33:49 -07:00
David S. Miller 4aabd8ef8c tcp: Move dynamnic metrics handling into seperate file.
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10 20:31:36 -07:00
Thomas Graf 5d91efa8dd can: gw: Remove pointless casts
No need to cast return value of nla_data()

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-07-10 22:36:17 +02:00
Thomas Graf 1da0faa380 can: gw: Properly fill the netlink header when responding to RTM_GETROUTE
- set message type to RTM_NEWROUTE
 - relate to original request by inheriting the sequence and port number.
 - set NLM_F_MULTI because it's a dump and more messages will follow

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-07-10 22:36:01 +02:00
Thomas Graf 732d35fd08 can: gw: Use nla_policy to validate netlink attributes
Also use nla_get_u32() instead of nla_memcpy() to access u32 attribtues.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-07-10 22:35:41 +02:00
Thomas Graf 6eaf53ca7b can: gw: Don't bump nlmsg_len manually
nlmsg_end() will take care of this when we finalize the message.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-07-10 22:33:40 +02:00
Julia Lawall cae296c42c net/rxrpc/ar-peer.c: remove invalid reference to list iterator variable
If list_for_each_entry, etc complete a traversal of the list, the iterator
variable ends up pointing to an address at an offset from the list head,
and not a meaningful structure.  Thus this value should not be used after
the end of the iterator.  This seems to be a copy-paste bug from a previous
debugging message, and so the meaningless value is just deleted.

This problem was found using Coccinelle (http://coccinelle.lip6.fr/).

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09 15:24:33 -07:00
Eric Dumazet 91c68ce2b2 net: cgroup: fix out of bounds accesses
dev->priomap is allocated by extend_netdev_table() called from
update_netdev_tables().
And this is only called if write_priomap() is called.

But if write_priomap() is not called, it seems we can have out of bounds
accesses in cgrp_destroy(), read_priomap() & skb_update_prio()

With help from Gao Feng

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Cc: Gao feng <gaofeng@cn.fujitsu.com>
Acked-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09 14:50:54 -07:00
Samuel Ortiz fe3c094abc NFC: Check for llcp_sock and its device from llcp_sock_getname
They both can potentially be NULL.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:25 -04:00
Samuel Ortiz 01d719a228 NFC: Add ISO 14443 type B protocol
Some devices (e.g. Sony's PaSoRi) can not do type B polling, so we have
to make a distinction between ISO14443 type A and B poll modes.

Cc: Eric Lapuyade <eric.lapuyade@intel.com>
Cc: Ilan Elias <ilane@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:24 -04:00
Samuel Ortiz c66433dc5d NFC: Dereference LLCP bind socket address after checking for it to be NULL
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:22 -04:00
Samuel Ortiz a831b91320 NFC: Do not return EBUSY when stopping a poll that's already stopped
We check for the polling flag before checking if the netlink PID caller
match.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:21 -04:00
Samuel Ortiz 1550bf2d59 NFC: Remove warning from nfc_llcp_local_put
The socket local pointer can be NULL when a socket is created but never
bound or connected.

Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:20 -04:00
Samuel Ortiz 5c0560b7a5 NFC: Handle LLCP Disconnected Mode frames
When receiving such frame, the sockets waiting for a connection to finish
should be woken up. Connecting to an unbound LLCP service will trigger a
DM as a response.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:20 -04:00
Samuel Ortiz 8f50020ed9 NFC: LLCP late binding
With the LLCP 16 local SAPs we can potentially quickly run out of source
SAPs for non well known services.
With the so called late binding we will reserve an SAP only when we actually
get a client connection for a local service. The SAP will be released once
the last client is gone, leaving it available to other services.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:19 -04:00
Samuel Ortiz ebbb16d9eb NFC: Forbid SSAP binding to a not well known LLCP service
With not Well Known Services there is no guarantees as to which
SSAP the server will be listening on, so there is no reason to
support binding to a specific source SAP.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:18 -04:00
Samuel Ortiz 8b7e8eda58 NFC: Forbid LLCP service name reusing
This patch fixes a typo and return the correct error when trying to
bind 2 sockets to the same service name.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:18 -04:00
Samuel Ortiz cbbf472181 NFC: Release LLCP SAP when the owner is released
The LLCP SAP should only be freed when the socket owning it is released.
As long as the socket is alive, the SAP should be reserved in order to
e.g. send the right wks array when bringing the MAC up.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:17 -04:00
Samuel Ortiz 4d22ea1532 NFC: Close listening LLCP sockets when the device is gone
When the MAC link goes down, we should only keep the bound sockets
alive. They will be closed by sock_release or when the underlying
NFC device is moving away.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:16 -04:00
Samuel Ortiz b8e7a06d9c NFC: Build LLCP general bytes upon request
Drivers will need them before starting a poll or when being activated
as targets. Mostly WKS can have changed between device registration and
then so we need to re-build the whole array.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:16 -04:00
Samuel Ortiz 12e5bdfefa NFC: Fix LLCP getname socket op
Set the right target index and use a better socket declaration routine.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:15 -04:00
Samuel Ortiz 025f152046 NFC: Update LLCP socket target index when getting a connection
Getting a valid CONNECT means we have a valid target index.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:14 -04:00
Samuel Ortiz 5df16cad44 NFC: Add netlink module alias for NFC
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:14 -04:00
Samuel Ortiz 1155bb617a NFC: Add modules alias for NFC sockets
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:13 -04:00
Eric Lapuyade a10d595b10 NFC: Allow HCI driver to pre-open pipes to some gates
Some NFC chips will statically create and open pipes for both standard
and proprietary gates. The driver can now pass this information to HCI
such that HCI will not attempt to create and open them, but will instead
directly use the passed pipe ids.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:12 -04:00
Eric Lapuyade 9eb334ac17 NFC: nfc_driver_failure() implementation
If the device is polling we sent a 0 target found event.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:11 -04:00
Eric Lapuyade d94f9c55ff NFC: nfc_targets_found() should accept zero target found
The semantics for a zero target found event is that the polling operation
could not complete.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:10 -04:00
Eric Lapuyade 8668fdd6ef NFC: Core must test the device polling state inside the device lock
There can ever be only one call to nfc_targets_found() after polling
has been engaged. This could be from a target discovered event from
the driver, or from an error handler to notify poll will never complete.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:09 -04:00
Eric Lapuyade a070c8591a NFC: Implement HCI driver or internal error management
If there is an ongoing HCI command executing, it will be completed,
thereby pushing the error up to the core. Otherwise, HCI will directly
notify the core with the error.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:09 -04:00
Eric Lapuyade ccca0d6e88 NFC: Factorize HCI cmd completion
HCI cmd can be completed either from an HCI response or from an
internal driver or HCI error. This requires to factorize the
completion code outside of the device lock.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:08 -04:00
Eric Lapuyade 456411ca81 NFC: Driver failure API
This API should be used by drivers, HCI, SHDLC or NCI stacks to report an
unrecoverable error.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:08 -04:00
Eric Lapuyade 6c1c5b9e1d NFC: Changed HCI cmd execution completion result to std linux errno
An HCI command can complete either from an HCI response
(with an HCI result) or as a consequence of any other system
error during processing. The completion therefore needs to take
a standard errno code. The HCI response will convert its result
to a standard errno before calling the completion.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:07 -04:00
Eric Lapuyade 72b06f75fe NFC: Implement HCP reaggregation allocation error case
We can now report an ENOMEM error up to the HCI layer.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:06 -04:00
Eric Lapuyade 1c215d79a1 NFC: Remove an impossible HCI error case
nfc_hci_recv_frame can not be called with a NULL skb.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:06 -04:00
Eric Lapuyade 5018e490c3 NFC: Handle SHDLC RSET frames from an SHDLC connected chip
shdlc reset may leave HCI in an inconsistent state by loosing parts of
HCI frames. Handle this case by reporting an unrecoverable error to HCI.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:05 -04:00
Eric Lapuyade d3b4044531 NFC: Removed addressed shdlc TODOs
The questions asked in the comments have been answered and addressed.

Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:05 -04:00
Eric Lapuyade a9a741a7e2 NFC: Prepare asynchronous error management for driver and shdlc
Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-07-09 16:42:04 -04:00
John W. Linville 0af5491c2f Merge branch 'for-john' of git://git.sipsolutions.net/mac80211-next 2012-07-09 16:34:39 -04:00
John W. Linville 635d999fd3 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts:
	net/mac80211/mlme.c
2012-07-09 16:34:34 -04:00
John W. Linville c1109736bc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2012-07-09 15:09:08 -04:00
Eliad Peller 10a9109f27 mac80211: destroy assoc_data correctly if assoc fails
If association failed due to internal error (e.g. no
supported rates IE), we call ieee80211_destroy_assoc_data()
with assoc=true, while we actually reject the association.

This results in the BSSID not being zeroed out.

After passing assoc=false, we no longer have to call
sta_info_destroy_addr() explicitly. While on it, move
the "associated" message after the assoc_success check.

Cc: stable@vger.kernel.org [3.4+]
Signed-off-by: Eliad Peller <eliad@wizery.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-09 15:01:00 -04:00
Sasha Levin 147f20e316 NFC: Prevent NULL deref when getting socket name
llcp_sock_getname can be called without a device attached to the nfc_llcp_sock.

This would lead to the following BUG:

[  362.341807] BUG: unable to handle kernel NULL pointer dereference at           (null)
[  362.341815] IP: [<ffffffff836258e5>] llcp_sock_getname+0x75/0xc0
[  362.341818] PGD 31b35067 PUD 30631067 PMD 0
[  362.341821] Oops: 0000 [#627] PREEMPT SMP DEBUG_PAGEALLOC
[  362.341826] CPU 3
[  362.341827] Pid: 7816, comm: trinity-child55 Tainted: G      D W    3.5.0-rc4-next-20120628-sasha-00005-g9f23eb7 #479
[  362.341831] RIP: 0010:[<ffffffff836258e5>]  [<ffffffff836258e5>] llcp_sock_getname+0x75/0xc0
[  362.341832] RSP: 0018:ffff8800304fde88  EFLAGS: 00010286
[  362.341834] RAX: 0000000000000000 RBX: ffff880033cb8000 RCX: 0000000000000001
[  362.341835] RDX: ffff8800304fdec4 RSI: ffff8800304fdec8 RDI: ffff8800304fdeda
[  362.341836] RBP: ffff8800304fdea8 R08: 7ebcebcb772b7ffb R09: 5fbfcb9c35bdfd53
[  362.341838] R10: 4220020c54326244 R11: 0000000000000246 R12: ffff8800304fdec8
[  362.341839] R13: ffff8800304fdec4 R14: ffff8800304fdec8 R15: 0000000000000044
[  362.341841] FS:  00007effa376e700(0000) GS:ffff880035a00000(0000) knlGS:0000000000000000
[  362.341843] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  362.341844] CR2: 0000000000000000 CR3: 0000000030438000 CR4: 00000000000406e0
[  362.341851] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  362.341856] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  362.341858] Process trinity-child55 (pid: 7816, threadinfo ffff8800304fc000, task ffff880031270000)
[  362.341858] Stack:
[  362.341862]  ffff8800304fdea8 ffff880035156780 0000000000000000 0000000000001000
[  362.341865]  ffff8800304fdf78 ffffffff83183b40 00000000304fdec8 0000006000000000
[  362.341868]  ffff8800304f0027 ffffffff83729649 ffff8800304fdee8 ffff8800304fdf48
[  362.341869] Call Trace:
[  362.341874]  [<ffffffff83183b40>] sys_getpeername+0xa0/0x110
[  362.341877]  [<ffffffff83729649>] ? _raw_spin_unlock_irq+0x59/0x80
[  362.341882]  [<ffffffff810f342b>] ? do_setitimer+0x23b/0x290
[  362.341886]  [<ffffffff81985ede>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[  362.341889]  [<ffffffff8372a539>] system_call_fastpath+0x16/0x1b
[  362.341921] Code: 84 00 00 00 00 00 b8 b3 ff ff ff 48 85 db 74 54 66 41 c7 04 24 27 00 49 8d 7c 24 12 41 c7 45 00 60 00 00 00 48 8b 83 28 05 00 00 <8b> 00 41 89 44 24 04 0f b6 83 41 05 00 00 41 88 44 24 10 0f b6
[  362.341924] RIP  [<ffffffff836258e5>] llcp_sock_getname+0x75/0xc0
[  362.341925]  RSP <ffff8800304fde88>
[  362.341926] CR2: 0000000000000000
[  362.341928] ---[ end trace 6d450e935ee18bf3 ]---

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-09 15:01:00 -04:00
Thomas Huehn 472dd35ccb mac80211: correct size the argument to kzalloc in minstrel_ht
msp has type struct minstrel_ht_sta_priv not struct minstrel_ht_sta.

(This incorporates the fixup originally posted as "mac80211: fix kzalloc
memory corruption introduced in minstrel_ht". -- JWL)

Reported-by: Fengguang Wu <wfg@linux.intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-09 14:59:58 -04:00
David S. Miller bb3bb3a5b8 Merge branch 'master' of git://1984.lsi.us.es/nf
Pablo Neira Ayuso says:

====================
* One to get the timeout special parameter for the SET target back working
  (this was introduced while trying to fix another bug in 3.4) from
  Jozsef Kadlecsik.

* One crash fix if containers and nf_conntrack are used reported by Hans
  Schillstrom by myself.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09 02:47:59 -07:00
Jozsef Kadlecsik a73f89a61f netfilter: ipset: timeout fixing bug broke SET target special timeout value
The patch "127f559 netfilter: ipset: fix timeout value overflow bug"
broke the SET target when no timeout was specified.

Reported-by: Jean-Philippe Menil <jean-philippe.menil@univ-nantes.fr>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-07-09 10:53:04 +02:00
Gao feng b761c9b1f4 cgroup: fix panic in netprio_cgroup
we set max_prioidx to the first zero bit index of prioidx_map in
function get_prioidx.

So when we delete the low index netprio cgroup and adding a new
netprio cgroup again,the max_prioidx will be set to the low index.

when we set the high index cgroup's net_prio.ifpriomap,the function
write_priomap will call update_netdev_tables to alloc memory which
size is sizeof(struct netprio_map) + sizeof(u32) * (max_prioidx + 1),
so the size of array that map->priomap point to is max_prioidx +1,
which is low than what we actually need.

fix this by adding check in get_prioidx,only set max_prioidx when
max_prioidx low than the new prioidx.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09 00:18:04 -07:00
Dan Carpenter 5c9df5fed1 small cleanup in ax25_addr_parse()
The comments were wrong here because "AX25_MAX_DIGIS" is 8 but the
comments say 6.  Also I've changed the "7" to "AX25_ADDR_LEN".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09 00:16:16 -07:00
Eric Dumazet 960fb66e52 netem: add limitation to reordered packets
Fix two netem bugs :

1) When a frame was dropped by tfifo_enqueue(), drop counter
   was incremented twice.

2) When reordering is triggered, we enqueue a packet without
   checking queue limit. This can OOM pretty fast when this
   is repeated enough, since skbs are orphaned, no socket limit
   can help in this situation.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mark Gordon <msg@google.com>
Cc: Andreas Terzis <aterzis@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Hagen Paul Pfeifer <hagen@jauu.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09 00:01:49 -07:00
Neil Horman ed10627725 sctp: refactor sctp_packet_append_chunk and clenup some memory leaks
While doing some recent work on sctp sack bundling I noted that
sctp_packet_append_chunk was pretty inefficient.  Specifially, it was called
recursively while trying to bundle auth and sack chunks.  Because of that we
call sctp_packet_bundle_sack and sctp_packet_bundle_auth a total of 4 times for
every call to sctp_packet_append_chunk, knowing that at least 3 of those calls
will do nothing.

So lets refactor sctp_packet_bundle_auth to have an outer part that does the
attempted bundling, and an inner part that just does the chunk appends.  This
saves us several calls per iteration that we just don't need.

Also, noticed that the auth and sack bundling fail to free the chunks they
allocate if the append fails, so make sure we add that in

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Vlad Yasevich <vyasevich@gmail.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: linux-sctp@vger.kernel.org
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-08 23:56:16 -07:00
Sasha Levin 3da947b269 ieee802154: verify packet size before trying to allocate it
Currently when sending data over datagram, the send function will attempt to
allocate any size passed on from the userspace.

We should make sure that this size is checked and limited. We'll limit it
to the MTU of the device, which is checked later anyway.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-08 23:49:30 -07:00
David S. Miller 8f961faef7 Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-next 2012-07-07 16:29:29 -07:00
David S. Miller d3a5ea6e21 Merge branch 'master' of git://1984.lsi.us.es/nf-next 2012-07-07 16:18:50 -07:00
Johannes Berg a6f38ac3cc mac80211: fix crash with single-queue drivers
Larry (and some others I think) reported that with
single-queue drivers mac80211 crashes when waking
the queues. This happens because we allocate just
a single queue for each virtual interface in case
the driver doesn't have at least 4 queues, but the
code stopping/waking the virtual interface queues
wasn't taking this into account.

Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-06 15:26:58 +02:00
Eric Dumazet c56bf6fe78 ipv6: fix a bad cast in ip6_dst_lookup_tail()
Fix a bug in ip6_dst_lookup_tail(), where typeof(dst) is
"struct dst_entry **", not "struct dst_entry *"

Reported-by: Fengguang Wu <wfg@linux.intel.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-06 00:23:41 -07:00
Eric Dumazet 883dd4fb59 ipv6: remove redundant declarations
remove redundant declarations, they belong in include/net/tcp.h

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 23:40:28 -07:00
Eliad Peller c62094889f mac80211: always set in_reconfig=false on wakeup
If the interfaces were removed just before a restart
work was started, open_count will be 0, and most of
the reconfig work will be skipped, including the
resetting of local->in_reconfig to false.

Leaving local->inconfig = true will result in
dropping any incoming packet.

Fix it by always setting local->in_reconfig = false
(even if there are no active interfaces).

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-06 08:33:05 +02:00
Johannes Berg 135792ec24 mac80211: fix debugfs default key links
Due to the way the default key links are created,
it happens that a link is left dangling:
 * both unicast/multicast links are created
 * unicast link is destroyed, and the links
   are updated
 * during this update, adding the multicast
   link again fails because it is present,
   destroying the debugfs pointer
 * removing the multicast link won't work as
   the pointer has been destroyed

Fix this by always removing the links and then
re-creating them if needed.

Reported-by: Marek Lindner <lindner_marek@yahoo.de>
Reported-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-06 08:33:04 +02:00
David S. Miller f4530fa574 ipv4: Avoid overhead when no custom FIB rules are installed.
If the user hasn't actually installed any custom rules, or fiddled
with the default ones, don't go through the whole FIB rules layer.

It's just pure overhead.

Instead do what we do with CONFIG_IP_MULTIPLE_TABLES disabled, check
the individual tables by hand, one by one.

Also, move fib_num_tclassid_users into the ipv4 network namespace.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 22:13:13 -07:00
Simon Wunderlich 2d3f6ccc4e batman-adv: check incoming packet type for bla
If the gateway functionality is used, some broadcast packets (DHCP
requests) may be transmitted as unicast packets. As the bridge loop
avoidance code now only considers the payload Ethernet destination,
it may drop the DHCP request for clients which are claimed by other
backbone gateways, because it falsely infers from the broadcast address
that the right backbone gateway should havehandled the broadcast.

Fix this by checking and delegating the batman-adv packet type used
for transmission.

Reported-by: Guido Iribarren <guidoiribarren@buenosaireslibre.org>
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
2012-07-06 00:08:46 +02:00
Steffen Klassert a2de86f63c ipv6: Initialize the neighbour pointer of rt6_info on allocation
git commit 97cac082 (ipv6: Store route neighbour in rt6_info struct)
added a neighbour pointer to rt6_info. Currently we don't initialize
this pointer at allocation time. We assume this pointer to be valid
if it is not a null pointer, so initialize it on allocation.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 14:20:07 -07:00
Vladimir Kondratiev 95ddc1fc45 cfg80211: bitrate calculation for 60g
60g band uses different from .11n MCS scheme, so bitrate
should be calculated differently

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-05 15:18:32 +02:00
Vladimir Kondratiev 8eb41c8dfb {nl,cfg}80211: support high bitrates
Until now, a u16 value was used to represent bitrate value.
With VHT bitrates this becomes too small.

Introduce a new 32-bit bitrate attribute. nl80211 will report
both the new and the old attribute, unless the bitrate doesn't
fit into the old u16 attribute in which case only the new one
will be reported.

User space tools encouraged to prefer the 32-bit attribute, if
available (since it won't be available on older kernels.)

Signed-off-by: Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
[reword commit message and comments a bit]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-05 15:18:30 +02:00
David S. Miller c90a9bb907 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-05 03:44:25 -07:00
alex.bluesman.smirnov@gmail.com 42c3629551 6lowpan: revert 'reuse eth_mac_addr()'
This reverts the commit cdf49c283e which
replaces lowpan '.ndo_set_mac_address' method by ethernet's one.

Accorind to the IEEE 802.15.4 standard, device has 8-byte length address,
so this hook loses the last 2 bytes which may rise a compatibility problems
with other IEEE 802.15.4 standard implementations.

Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 03:11:15 -07:00
RongQing.Li 0979e465c5 dccp: remove unnecessary codes in ipv6.c
opt always equals np->opts, so it is meaningless to define opt, and
check if opt does not equal np->opts and then try to free opt.

Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 03:11:15 -07:00
RongQing.Li 43264e0bd9 ipv6: remove unnecessary codes in tcp_ipv6.c
opt always equals np->opts, so it is meaningless to define opt, and
check if opt does not equal np->opts and then try to free opt.

Signed-off-by: RongQing.Li <roy.qing.li@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 03:11:15 -07:00
Yuval Mintz 16917b87a2 net-next: Add netif_get_num_default_rss_queues
Most multi-queue networking driver consider the number of online cpus when
configuring RSS queues.
This patch adds a wrapper to the number of cpus, setting an upper limit on the
number of cpus a driver should consider (by default) when allocating resources
for his queues.

Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 03:06:44 -07:00
Eric Dumazet bf5e53e371 ipv4: defer fib_compute_spec_dst() call
ip_options_compile() can avoid calling fib_compute_spec_dst()
by default, and perform the call only if needed.

David suggested to add a helper to make the call only once.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 03:03:32 -07:00
David S. Miller 36bdbcae2f net: Kill dst->_neighbour, accessors, and final uses.
No longer used.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 02:42:00 -07:00
David S. Miller d1e31fb02b xfrm: No need to copy generic neighbour pointer.
Nobody reads it any longer.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 02:42:00 -07:00
David S. Miller f187bc6efb ipv4: No need to set generic neighbour pointer.
Nobody reads it any longer.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 02:41:59 -07:00
David S. Miller 97cac0821a ipv6: Store route neighbour in rt6_info struct.
This makes for a simplified conversion away from dst_get_neighbour*().

All code outside of ipv6 will use neigh lookups via dst_neigh_lookup*().

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 02:41:58 -07:00
David S. Miller 1d248b1cf4 net: Pass neighbours and dest address into NETEVENT_REDIRECT events.
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 02:21:55 -07:00
David S. Miller fccd7d5c77 decnet: Use neighbours privately in dn_route struct.
This allows an easy conversion away from dst_get_neighbour*().

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:12:14 -07:00
David S. Miller 13a43d94ab neigh: Convert over to dst_neigh_lookup_skb().
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:12:00 -07:00
David S. Miller f9d751667f br_netfilter: Convert to dst_neigh_lookup_skb().
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:10:05 -07:00
David S. Miller dbedbe6d56 sch_teql: Convert over to dev_neigh_lookup_skb().
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:09:06 -07:00
David S. Miller f894cbf847 net: Add optional SKB arg to dst_ops->neigh_lookup().
Causes the handler to use the daddr in the ipv4/ipv6 header when
the route gateway is unspecified (local subnet).

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:04:01 -07:00
David S. Miller 5110effee8 net: Do delayed neigh confirmation.
When a dst_confirm() happens, mark the confirmation as pending in the
dst.  Then on the next packet out, when we have the neigh in-hand, do
the update.

This removes the dependency in dst_confirm() of dst's having an
attached neigh.

While we're here, remove the explicit 'dst' NULL check, all except 2
or 3 call sites ensure it's not NULL.  So just fix those cases up.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:03:06 -07:00
David S. Miller 60d354ebeb sunrpc: Don't do a dst_confirm() on an input routes.
xs_udp_data_ready() is operating on received packets, and tries to
do a dst_confirm() on the dst attached to the SKB.

This isn't right, dst confirmation is for output routes, not input
rights.  It's for resetting the timers on the nexthop neighbour entry
for the route, indicating that we've got good evidence that we've
successfully reached it.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:02:43 -07:00
David S. Miller 3c521f2ba9 ipv4: Don't report neigh uptodate state in rtcache procfs.
Soon routes will not have a cached neigh attached, nor will we
be able to necessarily go directly to a neigh from an arbitrary
route.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:02:31 -07:00
David S. Miller a263b30936 ipv4: Make neigh lookups directly in output packet path.
Do not use the dst cached neigh, we'll be getting rid of that.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05 01:02:12 -07:00
David S. Miller 11604721a3 ipv4: Fix crashes in ip_options_compile().
The spec_dst uses should be guarded by skb_rtable() being non-NULL
not just the SKB being non-null.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-04 16:13:17 -07:00
Krishna Kumar 46ba5a25f5 netfilter: nfnetlink_queue: do not allow to set unsupported flag bits
Allow setting of only supported flag bits in queue->flags.

Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-07-04 19:51:50 +02:00
Tomasz Bursztyka 59560a38a3 netfilter: nfnetlink: check callbacks before using those in nfnetlink_rcv_msg
nfnetlink_rcv_msg() might call a NULL callback which will cause NULL pointer
dereference.

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-07-04 19:47:53 +02:00
Pablo Neira Ayuso be0593c678 netfilter: nf_ct_tcp: missing per-net support for cttimeout
This patch adds missing per-net support for the cttimeout
infrastructure to TCP.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Gao feng <gaofeng@cn.fujitsu.com>
2012-07-04 19:37:42 +02:00
Pablo Neira Ayuso 08911475d1 netfilter: nf_conntrack: generalize nf_ct_l4proto_net
This patch generalizes nf_ct_l4proto_net by splitting it into chunks and
moving the corresponding protocol part to where it really belongs to.

To clarify, note that we follow two different approaches to support per-net
depending if it's built-in or run-time loadable protocol tracker.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Gao feng <gaofeng@cn.fujitsu.com>
2012-07-04 19:37:22 +02:00
Johannes Berg c5a7e58249 cfg80211: fix locking regression in monitor channel tracking
Michal's monitor channel tracking introduce a locking problem
as it locked the rdev lock inside the netdev notifier which
isn't allowed as we might already hold it if we get there by
removing an interface that is up.

Fix this by relying only on the RTNL to protect the interface
counters, the RTNL is always held in these code paths anyway.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-04 13:30:23 +02:00
Rostislav Lisovy f057bbb6f9 net: em_canid: Ematch rule to match CAN frames according to their identifiers
This ematch makes it possible to classify CAN frames (AF_CAN) according
to their identifiers. This functionality can not be easily achieved with
existing classifiers, such as u32, because CAN identifier is always stored
in native endianness, whereas u32 expects Network byte order.

Signed-off-by: Rostislav Lisovy <lisovy@gmail.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-07-04 13:07:05 +02:00
Linus Torvalds 5672874889 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking update from David Miller:

 1) Fix RX sequence number handling in mwifiex, from Stone Piao.

 2) Netfilter ipset mis-compares device names, fix from Florian
    Westphal.

 3) Fix route leak in ipv6 IPVS, from Eric Dumazet.

 4) NFS fixes.  Several buffer overflows in NCI layer from Dan
    Rosenberg, and release sock OOPS'er fix from Eric Dumazet.

 5) Fix WEP handling ath9k, we started using a bit the chip provides to
    indicate undecrypted packets but that bit turns out to be unreliable
    in certain configurations.  Fix from Felix Fietkau.

 6) Fix Kconfig dependency bug in wlcore, from Randy Dunlap.

 7) New USB IDs for rtlwifi driver from Larry Finger.

 8) Fix crashes in qmi_wwan usbnet driver when disconnecting, from Bjørn
    Mork.

 9) Gianfar driver programs coalescing settings properly in single queue
    mode, but does not do so in multi-queue mode.  Fix from Claudiu
    Manoil.

10) Missing module.h include in davinci_cpdma.c, from Daniel Mack.

11) Need dummy handler for IPSET_CMD_NONE otherwise we crash in ipset if
    we get this via nfnetlink, fix from Tomasz Bursztyka.

12) Missing RCU unlock in nfnetlink error path, also from Tomasz.

13) Fix divide by zero in igbvf when the user tries to set an RX
    coalescing value of 0 usecs, from Mitch A Williams.

14) We can process SCTP sacks for the wrong transport, oops.  Fix from
    Neil Horman.

15) Remove hw IP payload checksumming from e1000e driver.  This has zery
    value in our stack, and turning it on creates a very unintuitive
    restriction for users when using jumbo MTUs.

    Specifically, when IP payload checksums are on you cannot use both
    receive hashing offload and jumbo MTU.  Fix from Bruce Allan.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (27 commits)
  e1000e: remove use of IP payload checksum
  sctp: be more restrictive in transport selection on bundled sacks
  igbvf: fix divide by zero
  netfilter: nfnetlink: fix missing rcu_read_unlock in nfnetlink_rcv_msg
  netfilter: ipset: fix crash if IPSET_CMD_NONE command is sent
  davinci_cpdma: include linux/module.h
  gianfar: Fix RXICr/TXICr programming for multi-queue mode
  net: Downgrade CAP_SYS_MODULE deprecated message from error to warning.
  net: qmi_wwan: fix Oops while disconnecting
  mwifiex: fix memory leak associated with IE manamgement
  ath9k: fix panic caused by returning a descriptor we have queued for reuse
  mac80211: correct behaviour on unrecognised action frames
  ath9k: enable serialize_regmode for non-PCIE AR9287
  rtlwifi: rtl8192cu: New USB IDs
  NFC: Return from rawsock_release when sk is NULL
  iwlwifi: fix activating inactive stations
  wlcore: drop INET dependency
  ath9k: fix dynamic WEP related regression
  NFC: Prevent multiple buffer overflows in NCI
  netfilter: update location of my trees
  ...
2012-07-03 18:01:54 -07:00
Linus Torvalds a3da2c6913 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block bits from Jens Axboe:
 "As vacation is coming up, thought I'd better get rid of my pending
  changes in my for-linus branch for this iteration.  It contains:

   - Two patches for mtip32xx.  Killing a non-compliant sysfs interface
     and moving it to debugfs, where it belongs.

   - A few patches from Asias.  Two legit bug fixes, and one killing an
     interface that is no longer in use.

   - A patch from Jan, making the annoying partition ioctl warning a bit
     less annoying, by restricting it to !CAP_SYS_RAWIO only.

   - Three bug fixes for drbd from Lars Ellenberg.

   - A fix for an old regression for umem, it hasn't really worked since
     the plugging scheme was changed in 3.0.

   - A few fixes from Tejun.

   - A splice fix from Eric Dumazet, fixing an issue with pipe
     resizing."

* 'for-linus' of git://git.kernel.dk/linux-block:
  scsi: Silence unnecessary warnings about ioctl to partition
  block: Drop dead function blk_abort_queue()
  block: Mitigate lock unbalance caused by lock switching
  block: Avoid missed wakeup in request waitqueue
  umem: fix up unplugging
  splice: fix racy pipe->buffers uses
  drbd: fix null pointer dereference with on-congestion policy when diskless
  drbd: fix list corruption by failing but already aborted reads
  drbd: fix access of unallocated pages and kernel panic
  xen/blkfront: Add WARN to deal with misbehaving backends.
  blkcg: drop local variable @q from blkg_destroy()
  mtip32xx: Create debugfs entries for troubleshooting
  mtip32xx: Remove 'registers' and 'flags' from sysfs
  blkcg: fix blkg_alloc() failure path
  block: blkcg_policy_cfq shouldn't be used if !CONFIG_CFQ_GROUP_IOSCHED
  block: fix return value on cfq_init() failure
  mtip32xx: Remove version.h header file inclusion
  xen/blkback: Copy id field when doing BLKIF_DISCARD.
2012-07-03 15:45:10 -07:00