Commit Graph

23713 Commits

Author SHA1 Message Date
Sven Eckelmann
f0530ee5fb batman-adv: Prefix unicast static inline functions with batadv_
All non-static symbols of batman-adv were prefixed with batadv_ to avoid
collisions with other symbols of the kernel. Other symbols of batman-adv
should use the same prefix to keep the naming scheme consistent.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-24 18:41:42 +02:00
Sven Eckelmann
da641193dd batman-adv: Prefix originator static inline functions with batadv_
All non-static symbols of batman-adv were prefixed with batadv_ to avoid
collisions with other symbols of the kernel. Other symbols of batman-adv
should use the same prefix to keep the naming scheme consistent.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-24 18:41:41 +02:00
Sven Eckelmann
c0a559295e batman-adv: Prefix hash static inline functions with batadv_
All non-static symbols of batman-adv were prefixed with batadv_ to avoid
collisions with other symbols of the kernel. Other symbols of batman-adv
should use the same prefix to keep the naming scheme consistent.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-24 18:41:41 +02:00
Sven Eckelmann
e5d89254bf batman-adv: Prefix hard-interface static inline functions with batadv_
All non-static symbols of batman-adv were prefixed with batadv_ to avoid
collisions with other symbols of the kernel. Other symbols of batman-adv
should use the same prefix to keep the naming scheme consistent.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-24 18:41:41 +02:00
Sven Eckelmann
9b4a1159df batman-adv: Prefix bitarray static inline functions with batadv_
All non-static symbols of batman-adv were prefixed with batadv_ to avoid
collisions with other symbols of the kernel. Other symbols of batman-adv
should use the same prefix to keep the naming scheme consistent.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-24 18:41:40 +02:00
Sven Eckelmann
9e466250ed batman-adv: Prefix bat_debugfs local static functions with batadv_
All non-static symbols of batman-adv were prefixed with batadv_ to avoid
collisions with other symbols of the kernel. Other symbols of batman-adv
should use the same prefix to keep the naming scheme consistent.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-24 18:41:40 +02:00
Vijay Subramanian
7011d0851b tcp: Fix bug in tcp socket early demux
The dest port for the call to __inet_lookup_established() in TCP early demux
code is passed with the wrong endian-ness. This causes the lookup to fail
leading to early demux not being used.

Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-23 23:22:38 -07:00
David S. Miller
0b4a9e1a59 Merge branch 'master' of git://1984.lsi.us.es/nf-next
Pablo says:

====================
The following four patches provide Netfilter fixes for the cthelper
infrastructure that was recently merged mainstream, they are:

* two fixes for compilation breakage with two different configurations:

  - CONFIG_NF_NAT=m and CONFIG_NF_CT_NETLINK=y
  - NF_CONNTRACK_EVENTS=n and CONFIG_NETFILTER_NETLINK_QUEUE_CT=y

* two fixes for sparse warnings.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-23 17:10:10 -07:00
Eric Dumazet
7586eceb0a ipv4: tcp: dont cache output dst for syncookies
Don't cache output dst for syncookies, as this adds pressure on IP route
cache and rcu subsystem for no gain.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Hans Schillstrom <hans.schillstrom@ericsson.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-22 21:47:33 -07:00
Pablo Neira Ayuso
8e36c4b5b6 netfilter: ctnetlink: fix compilation with NF_CONNTRACK_EVENTS=n
This patch fixes compilation with NF_CONNTRACK_EVENTS=n and
NETFILTER_NETLINK_QUEUE_CT=y.

I'm leaving all those static inline functions that calculate the size
of the event message out of the ifdef area of NF_CONNTRACK_EVENTS since
they will not be included by gcc in case they are unused.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-23 02:13:46 +02:00
Pablo Neira Ayuso
ab5e8b77d5 netfilter: nfnetlink_queue: fix sparse warning due to missing include
This patch fixes a sparse warning due to missing include header file.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-23 02:13:38 +02:00
Alexander Duyck
6648bd7e0e ipv4: Add sysctl knob to control early socket demux
This change is meant to add a control for disabling early socket demux.
The main motivation behind this patch is to provide an option to disable
the feature as it adds an additional cost to routing that reduces overall
throughput by up to 5%.  For example one of my systems went from 12.1Mpps
to 11.6 after the early socket demux was added.  It looks like the reason
for the regression is that we are now having to perform two lookups, first
the one for an established socket, and then the one for the routing table.

By adding this patch and toggling the value for ip_early_demux to 0 I am
able to get back to the 12.1Mpps I was previously seeing.

[ Move local variables in ip_rcv_finish() down into the basic
  block in which they are actually used.  -DaveM ]

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-22 17:11:13 -07:00
Pablo Neira Ayuso
d584a61a93 netfilter: nfnetlink_queue: fix compilation with CONFIG_NF_NAT=m and CONFIG_NF_CT_NETLINK=y
LD      init/built-in.o
net/built-in.o:(.data+0x4408): undefined reference to `nf_nat_tcp_seq_adjust'
make: *** [vmlinux] Error 1

This patch adds a new pointer hook (nfq_ct_nat_hook) similar to other existing
in Netfilter to solve our complicated configuration dependencies.

Reported-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-22 02:49:52 +02:00
John Fastabend
bb1dfefdc6 net: dcb: fix small regression in __dcbnl_pg_setcfg()
A small regression was introduced in the reply command of
dcbnl_pg_setcfg(). User space apps may be expecting the
DCB_ATTR_PG_CFG attribute to be returned with the patch
below TX or RX variants are returned.

commit 7be994138b
Author: Thomas Graf <tgraf@suug.ch>
Date:   Wed Jun 13 02:54:55 2012 +0000

    dcbnl: Shorten all command handling functions

This patch reverts this behavior and returns DCB_ATTR_PG_CFG

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-21 15:06:00 -07:00
David S. Miller
fd62e09b94 tcp: Validate route interface in early demux.
Otherwise we might violate reverse path filtering.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-21 14:58:10 -07:00
David S. Miller
3e428fe038 Included changes:
- first set of patches that add the batadv_ prefix to all the exported symbols
 - restyling of comments
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Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge

Included changes:
- first set of patches that add the batadv_ prefix to all the exported symbols
- restyling of comments
2012-06-21 13:34:09 -07:00
Eric Dumazet
da55737467 inetpeer: inetpeer_invalidate_tree() cleanup
No need to use cmpxchg() in inetpeer_invalidate_tree() since we hold
base lock.

Also use correct rcu annotations to remove sparse errors
(CONFIG_SPARSE_RCU_POINTER=y)

net/ipv4/inetpeer.c:144:19: error: incompatible types in comparison
expression (different address spaces)
net/ipv4/inetpeer.c:149:20: error: incompatible types in comparison
expression (different address spaces)
net/ipv4/inetpeer.c:595:10: error: incompatible types in comparison
expression (different address spaces)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-20 14:38:55 -07:00
Sven Eckelmann
9cfc7bd608 batman-adv: Reformat multiline comments to consistent style
batman-adv doesn't follow the style for multiline comments that David S. Miller
prefers. All comments should be reformatted to follow this consistent style to
make the code slightly more readable.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:33 +02:00
Sven Eckelmann
3193e8fdfa batman-adv: Prefix main non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:32 +02:00
Sven Eckelmann
d0f714f472 batman-adv: Prefix vis non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:31 +02:00
Sven Eckelmann
88ed1e7772 batman-adv: Prefix unicast non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:30 +02:00
Sven Eckelmann
08c36d3e8a batman-adv: Prefix translation-table non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:29 +02:00
Sven Eckelmann
04b482a21a batman-adv: Prefix soft-interface non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:28 +02:00
Sven Eckelmann
9455e34cb2 batman-adv: Prefix send non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:26 +02:00
Sven Eckelmann
30d3c5113f batman-adv: Prefix routing non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:25 +02:00
Sven Eckelmann
925a6672fa batman-adv: Prefix ring_buffer non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:24 +02:00
Sven Eckelmann
7d211efc50 batman-adv: Prefix originator non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:23 +02:00
Sven Eckelmann
9039dc7e8a batman-adv: Prefix icmp-socket non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:22 +02:00
Sven Eckelmann
1a8eaf0733 batman-adv: Prefix hash non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:21 +02:00
Sven Eckelmann
9563877ea5 batman-adv: Prefix hard-interface non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:20 +02:00
Sven Eckelmann
84d5e5e003 batman-adv: Prefix gateway-common non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:19 +02:00
Sven Eckelmann
7cf06bc6ff batman-adv: Prefix gateway-client non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:18 +02:00
Sven Eckelmann
08adf15122 batman-adv: Prefix bridge_loop_avoidance non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:17 +02:00
Sven Eckelmann
0f5f932268 batman-adv: Prefix bitarray non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:16 +02:00
Sven Eckelmann
5853e22c58 batman-adv: Prefix bat_sysfs non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:15 +02:00
Sven Eckelmann
40a072d777 batman-adv: Prefix bat_debugfs non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:14 +02:00
Sven Eckelmann
81c524f76a batman-adv: Prefix bat_algo non-static functions with batadv_
batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
2012-06-20 22:15:13 +02:00
Pablo Neira Ayuso
5a05fae5ca netfilter: nfq_ct_hook needs __rcu and __read_mostly
This removes some sparse warnings.

Reported-by: Fengguang Wu <wfg@linux.intel.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-20 20:50:31 +02:00
David S. Miller
41063e9dd1 ipv4: Early TCP socket demux.
Input packet processing for local sockets involves two major demuxes.
One for the route and one for the socket.

But we can optimize this down to one demux for certain kinds of local
sockets.

Currently we only do this for established TCP sockets, but it could
at least in theory be expanded to other kinds of connections.

If a TCP socket is established then it's identity is fully specified.

This means that whatever input route was used during the three-way
handshake must work equally well for the rest of the connection since
the keys will not change.

Once we move to established state, we cache the receive packet's input
route to use later.

Like the existing cached route in sk->sk_dst_cache used for output
packets, we have to check for route invalidations using dst->obsolete
and dst->ops->check().

Early demux occurs outside of a socket locked section, so when a route
invalidation occurs we defer the fixup of sk->sk_rx_dst until we are
actually inside of established state packet processing and thus have
the socket locked.

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 21:22:05 -07:00
David S. Miller
f9242b6b28 inet: Sanitize inet{,6} protocol demux.
Don't pretend that inet_protos[] and inet6_protos[] are hashes, thay
are just a straight arrays.  Remove all unnecessary hash masking.

Document MAX_INET_PROTOS.

Use RAW_HTABLE_SIZE when appropriate.

Reported-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 18:56:21 -07:00
David S. Miller
3879d4e397 Merge branch 'master' of git://gitorious.org/linux-can/linux-can-next
Marc Kleine-Budde says:

====================
here is our second pull request for net-next. In this series Federico
Vaga adds a pci driver for c_can/d_can hardware using the existing
generic c_can driver. The remaining 6 patches are by Oliver Hartkopp.
He adds CANFD support to the CAN stack while keeping binary
compatibility for existing applications. CANFD is an extension to the
existing CAN standard, it allows longer CAN frames and/or higher data
rates. There's no real hardware available yet, but this series adds
CANFD support to the vcan driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 14:47:13 -07:00
David S. Miller
a77f4b4acf Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
John Linville says:

====================
This is a sizeable batch of updates intended for 3.6...

The bulk of the changes here are Bluetooth.  Gustavo says:

	Here goes the first Bluetooth pull request for 3.6, we have
	queued quite a lot of work. Andrei Emeltchenko added the AMP
	Manager code, a lot of work is needed, but the first bit are
	already there. This code is disabled by default.  Mat Martineau
	changed the whole L2CAP ERTM state machine code, replacing
	the old one with a new implementation. Besides that we had
	lot of coding style fixes (to follow net rules), more l2cap
	core separation from socket and many clean ups and fixed all
	over the tree.

Along with the above, there is a healthy dose of ath9k, iwlwifi,
and other driver updates.  There is also another pull from the
wireless tree to resolve some merge issues.  I also fixed-up some
merge discrepencies between net-next and wireless-next.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-19 14:37:15 -07:00
Oliver Hartkopp
e2d265d3b5 canfd: add support for CAN FD in CAN_RAW sockets
- introduce a new sockopt CAN_RAW_FD_FRAMES to allow CAN FD frames
- handle CAN frames and CAN FD frames simultaneously when enabled

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-06-19 21:40:08 +02:00
Oliver Hartkopp
8b01939f35 canfd: add support for CAN FD in PF_CAN core
- handle ETH_P_CAN and ETH_P_CANFD skbuffs
- update sanity checks for CAN and CAN FD
- make sure the CAN frame can pass the selected CAN netdevice on send
- bump core version and abi version to indicate the new CAN FD support

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-06-19 21:40:01 +02:00
Oliver Hartkopp
7c9416365c canfd: add new data structures and constants
- add new struct canfd_frame
- check identical element offsets in struct can_frame and struct canfd_frame
- new ETH_P_CANFD definition to tag CAN FD skbs correctly
- add CAN_MTU and CANFD_MTU definitions for easy frame and mode detection
- add CAN[FD]_MAX_[DLC|DLEN] helper constants to remove hard coded values
- update existing struct can_frame with helper constants and comments

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2012-06-19 21:39:50 +02:00
John W. Linville
b3c911eeb4 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Conflicts:
	drivers/net/wireless/iwlwifi/dvm/testmode.c
	drivers/net/wireless/iwlwifi/pcie/trans.c
2012-06-19 14:41:22 -04:00
David S. Miller
6bdc5f49e3 Merge branch 'master' of git://1984.lsi.us.es/nf-next
Pablo says:

====================
The following patchset provides fixes for issues that were recently introduced
by my new cthelper infrastructure. They have been spotted by Randy Dunlap,
Andrew Morton and Dan Carpenter.

The patches provide:

* compilation fixes if CONFIG_NF_CONNTRACK is disabled: I moved all the
  conntrack code from nfnetlink_queue.c to nfnetlink_queue_ct.c to avoid
  peppering the entire code with lots of ifdefs. I needed to rename
  nfnetlink_queue.c to nfnetlink_queue_core.c to get it working with the
  Makefile tweaks I've added.

* fix NULL pointer dereference via ctnetlink while trying to change the helper
  for an existing conntrack entry. I don't find any reasonable use case for
  changing the helper from one to another in run-time. Thus, now ctnetlink
  returns -EOPNOTSUPP for this operation.

* fix possible out-of-bound zeroing of the conntrack extension area due to
  the helper automatic assignation routine.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-18 20:26:06 -07:00
Pablo Neira Ayuso
7c62234547 netfilter: nfnetlink_queue: fix compilation with NF_CONNTRACK disabled
In "9cb0176 netfilter: add glue code to integrate nfnetlink_queue and ctnetlink"
the compilation with NF_CONNTRACK disabled is broken. This patch fixes this
issue.

I have moved the conntrack part into nfnetlink_queue_ct.c to avoid
peppering the entire nfnetlink_queue.c code with ifdefs.

I also needed to rename nfnetlink_queue.c to nfnetlink_queue_pkt.c
to update the net/netfilter/Makefile to support conditional compilation
of the conntrack integration.

This patch also adds CONFIG_NETFILTER_QUEUE_CT in case you want to explicitly
disable the integration between nf_conntrack and nfnetlink_queue.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-19 04:44:57 +02:00
Pablo Neira Ayuso
6e9c2db3aa netfilter: fix compilation of the nfnl_cthelper if NF_CONNTRACK is unset
This patch fixes the compilation of net/netfilter/nfnetlink_cthelper.c
if CONFIG_NF_CONNTRACK is not set.

This patch also moves the definition of the cthelper infrastructure to
the scope of NF_CONNTRACK things.

I have also renamed NETFILTER_NETLINK_CTHELPER by NF_CT_NETLINK_HELPER,
to use similar names to other nf_conntrack_netlink extensions. Better now
that this has been only for two days in David's tree.

Two new dependencies have been added:

* NF_CT_NETLINK
* NETFILTER_NETLINK_QUEUE

Since these infrastructure requires both ctnetlink and nfqueue.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-19 01:25:08 +02:00
Pablo Neira Ayuso
32f5376003 netfilter: nf_ct_helper: disable automatic helper re-assignment of different type
This patch modifies __nf_ct_try_assign_helper in a way that invalidates support
for the following scenario:

1) attach the helper A for first time when the conntrack is created
2) attach new (different) helper B due to changes the reply tuple caused by NAT

eg. port redirection from TCP/21 to TCP/5060 with both FTP and SIP helpers
loaded, which seems to be a quite unorthodox scenario.

I can provide a more elaborated patch to support this scenario but explicit
helper attachment provides a better solution for this since now the use can
attach the helpers consistently, without relying on the automatic helper
lookup magic.

This patch fixes a possible out of bound zeroing of the conntrack helper
extension if the helper B uses more memory for its private data than
helper A.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-06-19 01:24:52 +02:00