History log of /net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c
Revision Date Author Comments
30e0c6a6bee24db0166b7ca709277cd693e179f2 25-Mar-2013 Gao feng <gaofeng@cn.fujitsu.com> netfilter: nf_log: prepare net namespace support for loggers

This patch adds netns support to nf_log and it prepares netns
support for existing loggers. It is composed of four major
changes.

1) nf_log_register has been split to two functions: nf_log_register
and nf_log_set. The new nf_log_register is used to globally
register the nf_logger and nf_log_set is used for enabling
pernet support from nf_loggers.

Per netns is not yet complete after this patch, it comes in
separate follow up patches.

2) Add net as a parameter of nf_log_bind_pf. Per netns is not
yet complete after this patch, it only allows to bind the
nf_logger to the protocol family from init_net and it skips
other cases.

3) Adapt all nf_log_packet callers to pass netns as parameter.
After this patch, this function only works for init_net.

4) Make the sysctl net/netfilter/nf_log pernet.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
07a936260a94ae4798527ce8f79d4f3b589ab8a3 29-Oct-2012 Amerigo Wang <amwang@redhat.com> ipv6: use IS_ENABLED()

#if defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE)

can be replaced by

#if IS_ENABLED(CONFIG_FOO)

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
08911475d1d0921401e37d83292b217e1411d10b 29-Jun-2012 Pablo Neira Ayuso <pablo@netfilter.org> 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>
8fc02781688eda937657193ee28caf4914563d27 21-Jun-2012 Gao feng <gaofeng@cn.fujitsu.com> netfilter: nf_ct_icmpv6: add icmpv6_kmemdup_sysctl_table function

Split sysctl function into smaller chucks to cleanup code and prepare
patches to reduce ifdef pollution.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
f1caad274515ffd9841ac57ce9a7b5fc35bbf689 21-Jun-2012 Gao feng <gaofeng@cn.fujitsu.com> netfilter: nf_conntrack: prepare l4proto->init_net cleanup

l4proto->init contain quite redundant code. We can simplify this
by adding a new parameter l3proto.

This patch prepares that code simplification.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
8264deb81853462da5cbcfb19b54c4fd9f3d88ba 28-May-2012 Gao feng <gaofeng@cn.fujitsu.com> netfilter: nf_conntrack: add namespace support for cttimeout

This patch adds namespace support for cttimeout.

Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
e76d0af5e45f4152e3fdcc103b753a8aff93fcb5 05-Jun-2012 Pablo Neira Ayuso <pablo@netfilter.org> netfilter: nf_conntrack: remove now unused sysctl for nf_conntrack_l[3|4]proto

Since the sysctl data for l[3|4]proto now resides in pernet nf_proto_net.
We can now remove this unused fields from struct nf_contrack_l[3,4]proto.

Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
7080ba0955438ecd2885c1b73fbd9760b1594a41 28-May-2012 Gao feng <gaofeng@cn.fujitsu.com> netfilter: nf_ct_icmp: add namespace support

This patch adds namespace support for ICMPv6 protocol tracker.

Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
e549a6b3a5acff66f0427091e44f814943a26a86 02-Apr-2012 David S. Miller <davem@davemloft.net> netfilter: ipv6: Stop using NLA_PUT*().

These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.

Signed-off-by: David S. Miller <davem@davemloft.net>
50978462300f74dc48aea4a38471cb69bdf741a5 28-Feb-2012 Pablo Neira Ayuso <pablo@netfilter.org> netfilter: add cttimeout infrastructure for fine timeout tuning

This patch adds the infrastructure to add fine timeout tuning
over nfnetlink. Now you can use the NFNL_SUBSYS_CTNETLINK_TIMEOUT
subsystem to create/delete/dump timeout objects that contain some
specific timeout policy for one flow.

The follow up patches will allow you attach timeout policy object
to conntrack via the CT target and the conntrack extension
infrastructure.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2c8503f55fbdfbeff4164f133df804cf4d316290 28-Feb-2012 Pablo Neira Ayuso <pablo@netfilter.org> netfilter: nf_conntrack: pass timeout array to l4->new and l4->packet

This patch defines a new interface for l4 protocol trackers:

unsigned int *(*get_timeouts)(struct net *net);

that is used to return the array of unsigned int that contains
the timeouts that will be applied for this flow. This is passed
to the l4proto->new(...) and l4proto->packet(...) functions to
specify the timeout policy.

This interface allows per-net global timeout configuration
(although only DCCP supports this by now) and it will allow
custom custom timeout configuration by means of follow-up
patches.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
88ed01d17b44bc2bed4ad4835d3b1099bff3dd71 02-Jun-2011 Pablo Neira Ayuso <pablo@netfilter.org> netfilter: nf_conntrack: fix ct refcount leak in l4proto->error()

This patch fixes a refcount leak of ct objects that may occur if
l4proto->error() assigns one conntrack object to one skbuff. In
that case, we have to skip further processing in nf_conntrack_in().

With this patch, we can also fix wrong return values (-NF_ACCEPT)
for special cases in ICMP[v6] that should not bump the invalid/error
statistic counters.

Reported-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
5bfddbd46a95c978f4d3c992339cbdf4f4b790a3 08-Jun-2010 Eric Dumazet <eric.dumazet@gmail.com> netfilter: nf_conntrack: IPS_UNTRACKED bit

NOTRACK makes all cpus share a cache line on nf_conntrack_untracked
twice per packet. This is bad for performance.
__read_mostly annotation is also a bad choice.

This patch introduces IPS_UNTRACKED bit so that we can use later a
per_cpu untrack structure more easily.

A new helper, nf_ct_untracked_get() returns a pointer to
nf_conntrack_untracked.

Another one, nf_ct_untracked_status_or() is used by nf_nat_init() to add
IPS_NAT_DONE_MASK bits to untracked status.

nf_ct_is_untracked() prototype is changed to work on a nf_conn pointer.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
5d0aa2ccd4699a01cfdf14886191c249d7b45a01 15-Feb-2010 Patrick McHardy <kaber@trash.net> netfilter: nf_conntrack: add support for "conntrack zones"

Normally, each connection needs a unique identity. Conntrack zones allow
to specify a numerical zone using the CT target, connections in different
zones can use the same identity.

Example:

iptables -t raw -A PREROUTING -i veth0 -j CT --zone 1
iptables -t raw -A OUTPUT -o veth1 -j CT --zone 1

Signed-off-by: Patrick McHardy <kaber@trash.net>
8fea97ec1772bbf553d89187340ef624d548e115 15-Feb-2010 Patrick McHardy <kaber@trash.net> netfilter: nf_conntrack: pass template to l4proto ->error() handler

The error handlers might need the template to get the conntrack zone
introduced in the next patches to perform a conntrack lookup.

Signed-off-by: Patrick McHardy <kaber@trash.net>
3666ed1c4837fd6906da0224c5373d7a2186a193 23-Nov-2009 Joe Perches <joe@perches.com> netfilter: net/ipv[46]/netfilter: Move && and || to end of previous line

Compile tested only.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
f8572d8f2a2ba75408b97dc24ef47c83671795d7 05-Nov-2009 Eric W. Biederman <ebiederm@xmission.com> sysctl net: Remove unused binary sysctl code

Now that sys_sysctl is a compatiblity wrapper around /proc/sys
all sysctl strategy routines, and all ctl_name and strategy
entries in the sysctl tables are unused, and can be
revmoed.

In addition neigh_sysctl_register has been modified to no longer
take a strategy argument and it's callers have been modified not
to pass one.

Cc: "David Miller" <davem@davemloft.net>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: netdev@vger.kernel.org
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
f87fb666bb00a7afcbd7992d236e42ac544996f9 08-Jun-2009 Jan Kasprzak <kas@fi.muni.cz> netfilter: nf_ct_icmp: keep the ICMP ct entries longer

Current conntrack code kills the ICMP conntrack entry as soon as
the first reply is received. This is incorrect, as we then see only
the first ICMP echo reply out of several possible duplicates as
ESTABLISHED, while the rest will be INVALID. Also this unnecessarily
increases the conntrackd traffic on H-A firewalls.

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

Signed-off-by: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Signed-off-by: Patrick McHardy <kaber@trash.net>
17e6e4eac070607a35464ea7e2c5eceac32e5eca 02-Jun-2009 Pablo Neira Ayuso <pablo@netfilter.org> netfilter: conntrack: simplify event caching system

This patch simplifies the conntrack event caching system by removing
several events:

* IPCT_[*]_VOLATILE, IPCT_HELPINFO and IPCT_NATINFO has been deleted
since the have no clients.
* IPCT_COUNTER_FILLING which is a leftover of the 32-bits counter
days.
* IPCT_REFRESH which is not of any use since we always include the
timeout in the messages.

After this patch, the existing events are:

* IPCT_NEW, IPCT_RELATED and IPCT_DESTROY, that are used to identify
addition and deletion of entries.
* IPCT_STATUS, that notes that the status bits have changes,
eg. IPS_SEEN_REPLY and IPS_ASSURED.
* IPCT_PROTOINFO, that reports that internal protocol information has
changed, eg. the TCP, DCCP and SCTP protocol state.
* IPCT_HELPER, that a helper has been assigned or unassigned to this
entry.
* IPCT_MARK and IPCT_SECMARK, that reports that the mark has changed, this
covers the case when a mark is set to zero.
* IPCT_NATSEQADJ, to report that there's updates in the NAT sequence
adjustment.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
a400c30edb1958ceb53c4b8ce78989189b36df47 25-Mar-2009 Holger Eitzenberger <holger@eitzenberger.org> netfilter: nf_conntrack: calculate per-protocol nlattr size

Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
55df4ac0c927c7f1f84e6d75532f0ca45d391e64 18-Feb-2009 Eric Leblond <eric@inl.fr> netfilter: log invalid new icmpv6 packet with nf_log_packet()

This patch adds a logging message for invalid new icmpv6 packet.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>
4aa3b2ee1945ed082430ae1fb988d60eef64ca07 18-Feb-2009 Eric Leblond <eric@inl.fr> netfilter: nf_conntrack_ipv6: fix nf_log_packet message in icmpv6 conntrack

This patch fixes a trivial typo that was adding a new line at end of
the nf_log_packet() prefix. It also make the logging conditionnal by
adding a LOG_INVALID test.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>
3f9007135c1dc896db9a9e35920aafc65b157230 09-Feb-2009 Eric Leblond <eric@inl.fr> netfilter: nf_conntrack_ipv6: don't track ICMPv6 negotiation message

This patch removes connection tracking handling for ICMPv6 messages
related to Stateless Address Autoconfiguration, MLD, and MLDv2. They
can not be tracked because they are massively using multicast (on
pre-defined address). But they are not invalid and should not be
detected as such.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
a51f42f3c940e5582c40454ece066d033bc7e24f 09-Feb-2009 Eric Leblond <eric@inl.fr> netfilter: fix tuple inversion for Node information request

The patch fixes a typo in the inverse mapping of Node Information
request. Following draft-ietf-ipngwg-icmp-name-lookups-09, "Querier"
sends a type 139 (ICMPV6_NI_QUERY) packet to "Responder" which answer
with a type 140 (ICMPV6_NI_REPLY) packet.

Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
71320afcdb33b3f0b754ba1fac6a8c77aa469041 12-Jan-2009 Patrick McHardy <kaber@trash.net> netfilter 06/09: nf_conntrack: fix ICMP/ICMPv6 timeout sysctls on big-endian

An old bug crept back into the ICMP/ICMPv6 conntrack protocols: the timeout
values are defined as unsigned longs, the sysctl's maxsize is set to
sizeof(unsigned int). Use unsigned int for the timeout values as in the
other conntrack protocols.

Reported-by: Jean-Mickael Guerin <jean-mickael.guerin@6wind.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6d9f239a1edb31d6133230f478fd1dc2da338ec5 04-Nov-2008 Alexey Dobriyan <adobriyan@gmail.com> net: '&' redux

I want to compile out proc_* and sysctl_* handlers totally and
stub them to NULL depending on config options, however usage of &
will prevent this, since taking adress of NULL pointer will break
compilation.

So, drop & in front of every ->proc_handler and every ->strategy
handler, it was never needed in fact.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
c2a2c7e0cc39e7f9336cd67e8307a110bdba82f3 08-Oct-2008 Alexey Dobriyan <adobriyan@gmail.com> netfilter: netns nf_conntrack: per-netns net.netfilter.nf_conntrack_log_invalid sysctl

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
c04d05529a6e0bf97183a2caf76a0c7f07f5b78c 08-Oct-2008 Alexey Dobriyan <adobriyan@gmail.com> netfilter: netns nf_conntrack: per-netns net.netfilter.nf_conntrack_checksum sysctl

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
a71996fccce4b2086a26036aa3c915365ca36926 08-Oct-2008 Alexey Dobriyan <adobriyan@gmail.com> netfilter: netns nf_conntrack: pass conntrack to nf_conntrack_event_cache() not skb

This is cleaner, we already know conntrack to which event is relevant.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
74c51a1497033e6ff7b8096797daca233a4a30df 08-Oct-2008 Alexey Dobriyan <adobriyan@gmail.com> netfilter: netns nf_conntrack: pass netns pointer to L4 protocol's ->error hook

Again, it's deducible from skb, but we're going to use it for
nf_conntrack_checksum and statistics, so just pass it from upper layer.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
400dad39d1c33fe797e47326d87a3f54d0ac5181 08-Oct-2008 Alexey Dobriyan <adobriyan@gmail.com> netfilter: netns nf_conntrack: per-netns conntrack hash

* make per-netns conntrack hash

Other solution is to add ->ct_net pointer to tuplehashes and still has one
hash, I tried that it's ugly and requires more code deep down in protocol
modules et al.

* propagate netns pointer to where needed, e. g. to conntrack iterators.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
76108cea065cda58366d16a7eb6ca90d717a1396 08-Oct-2008 Jan Engelhardt <jengelh@medozas.de> netfilter: Use unsigned types for hooknum and pf vars

and (try to) consistently use u_int8_t for the L3 family.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
718d4ad98e272daebc258e49dc02f52a6a8de9d3 10-Jun-2008 Fabian Hugelshofer <hugelshofer2006@gmx.ch> netfilter: nf_conntrack: properly account terminating packets

Currently the last packet of a connection isn't accounted when its causing
abnormal termination.

Introduces nf_ct_kill_acct() which increments the accounting counters on
conntrack kill. The new function was necessary, because there are calls
to nf_ct_kill() which don't need accounting:

nf_conntrack_proto_tcp.c line ~847:
Kills ct and returns NF_REPEAT. We don't want to count twice.

nf_conntrack_proto_tcp.c line ~880:
Kills ct and returns NF_DROP. I think we don't want to count dropped
packets.

nf_conntrack_netlink.c line ~824:
As far as I can see ctnetlink_del_conntrack() is used to destroy a
conntrack on behalf of the user. There is an sk_buff, but I don't think
this is an actual packet. Incrementing counters here is therefore not
desired.

Signed-off-by: Fabian Hugelshofer <hugelshofer2006@gmx.ch>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
51091764f26ec36c02e35166f083193a30f426fc 10-Jun-2008 Patrick McHardy <kaber@trash.net> netfilter: nf_conntrack: add nf_ct_kill()

Encapsulate the common

if (del_timer(&ct->timeout))
ct->timeout.function((unsigned long)ct)

sequence in a new function.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
3c9fba656a185cf56872a325e5594d9b4d4168ec 14-Apr-2008 Jan Engelhardt <jengelh@computergmbh.de> [NETFILTER]: nf_conntrack: replace NF_CT_DUMP_TUPLE macro indrection by function call

Directly call IPv4 and IPv6 variants where the address family is
easily known.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
09f263cd39751cada63dec2dccc71e67c00bc38c 14-Apr-2008 Jan Engelhardt <jengelh@computergmbh.de> [NETFILTER]: nf_conntrack: use bool type in struct nf_conntrack_l4proto

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
7cc3864d39837549c5ccb33c5b85183d6e6986bc 31-Jan-2008 Jan Engelhardt <jengelh@computergmbh.de> [NETFILTER]: nf_{conntrack,nat}_icmp: constify and annotate

Constify a few data tables use const qualifiers on variables where
possible in the nf_conntrack_icmp* sources.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
c88130bcd546e73e66165f9c29113dae9facf1ec 31-Jan-2008 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack: naming unification

Rename all "conntrack" variables to "ct" for more consistency and
avoiding some overly long lines.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
c71e9167081a6a0d2a076cda674b696b89bb31c2 15-Jan-2008 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack: make print_conntrack function optional for l4protos

Allows to remove five empty implementations.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
f01ffbd6e7d001ccf9168b33507958a51ce0ffcf 18-Dec-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_log: move logging stuff to seperate header

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
77236b6e33b06aaf756a86ed1965ca7d460b1b53 18-Dec-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: ctnetlink: use netlink attribute helpers

Use NLA_PUT_BE32, nla_get_be32() etc.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6e23ae2a48750bda407a4a58f52a4865d7308bf5 20-Nov-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: Introduce NF_INET_ hook values

The IPv4 and IPv6 hook values are identical, yet some code tries to figure
out the "correct" value by looking at the address family. Introduce NF_INET_*
values for both IPv4 and IPv6. The old values are kept in a #ifndef __KERNEL__
section for userspace compatibility.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
064b5bba0cc495201729285c6a6ce205df0a386a 18-Oct-2007 Eric W. Biederman <ebiederm@xmission.com> sysctl: remove broken netfilter binary sysctls

No one has bothered to set strategy routine for the the netfilter sysctls that
return jiffies to be sysctl_jiffies.

So it appears the sys_sysctl path is unused and untested, so this patch
removes the binary sysctl numbers.

Which fixes the netfilter oops in 2.6.23-rc2-mm2 for me.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
f73e924cdd166360e8cc9a1b193008fdc9b3e3e2 28-Sep-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: ctnetlink: use netlink policy

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
fdf708322d4658daa6eb795d1a835b97efdb335e 28-Sep-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: nfnetlink: rename functions containing 'nfattr'

There is no struct nfattr anymore, rename functions to 'nlattr'.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
df6fb868d6118686805c2fa566e213a8f31c8e4f 28-Sep-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: nfnetlink: convert to generic netlink attribute functions

Get rid of the duplicated rtnetlink macros and use the generic netlink
attribute functions. The old duplicated stuff is moved to a new header
file that exists just for userspace.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
61075af51f252913401c41fbe94075b46c94e9f1 15-Jul-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack: mark protocols __read_mostly

Also remove two unnecessary EXPORT_SYMBOLs and move the
nf_conntrack_l3proto_ipv4 declaration to the correct file.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
e2a3123fbe58da9fd3f35cd242087896ace6049f 15-Jul-2007 Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> [NETFILTER]: nf_conntrack: Introduces nf_ct_get_tuplepr and uses it

nf_ct_get_tuple() requires the offset to transport header and that bothers
callers such as icmp[v6] l4proto modules. This introduces new function
to simplify them.

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
0d53778e81ac7af266dac8a20cc328328c327112 08-Jul-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: Convert DEBUGP to pr_debug

Convert DEBUGP to pr_debug and fix lots of non-compiling debug statements.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
330f7db5e578e1e298ba3a41748e5ea333a64a2b 08-Jul-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack: remove 'ignore_conntrack' argument from nf_conntrack_find_get

All callers pass NULL, this also doesn't seem very useful for modules.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
75202e76893c11ce7f8bcc9a07f994d71e3d5113 01-Jun-2007 Bill Nottingham <notting@redhat.com> [NET]: Fix comparisons of unsigned < 0.

Recent gcc versions emit warnings when unsigned variables are
compared < 0 or >= 0.

Signed-off-by: Bill Nottingham <notting@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1b53d9042c04b8eb875d02e65792e9884efc3784 23-Mar-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: Remove changelogs and CVS IDs

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
e281db5cdfc3ab077ab3e459d098cb4fde0bc57a 05-Mar-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack/nf_nat: fix incorrect config ifdefs

The nf_conntrack_netlink config option is named CONFIG_NF_CT_NETLINK,
but multiple files use CONFIG_IP_NF_CONNTRACK_NETLINK or
CONFIG_NF_CONNTRACK_NETLINK for ifdefs.

Fix this and reformat all CONFIG_NF_CT_NETLINK ifdefs to only use a line.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
cd354f1ae75e6466a7e31b727faede57a1f89ca5 14-Feb-2007 Tim Schmielau <tim@physik3.uni-rostock.de> [PATCH] remove many unneeded #includes of sched.h

After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there. Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm. I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
923f4902fefdf4e89b0fb32c4e069d4f57d704f5 12-Feb-2007 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack: properly use RCU API for nf_ct_protos/nf_ct_l3protos arrays

Replace preempt_{enable,disable} based RCU by proper use of the
RCU API and add missing rcu_read_lock/rcu_read_unlock calls in
all paths not obviously only used within packet process context
(nfnetlink_conntrack).

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
1ab1457c42bc078e5a9becd82a7f9f940b55c53a 09-Feb-2007 YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> [NET] IPV6: Fix whitespace errors.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
bff9a89bcac5b68ac0a1ea856b1726a35ae1eabb 03-Dec-2006 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack: endian annotations

Resync with Al Viro's ip_conntrack annotations and fix a missed
spot in ip_nat_proto_icmp.c.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
933a41e7e12b773d1dd026018f02b86b5d257a22 29-Nov-2006 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack: move conntrack protocol sysctls to individual modules

Signed-off-by: Patrick McHardy <kaber@trash.net>
f8eb24a89afa12b48fa7e39775faea6d64b8e538 29-Nov-2006 Patrick McHardy <kaber@trash.net> [NETFILTER]: nf_conntrack: move extern declaration to header files

Using extern in a C file is a bad idea because the compiler can't
catch type errors.

Signed-off-by: Patrick McHardy <kaber@trash.net>
605dcad6c85226e6d43387917b329d65b95cef39 29-Nov-2006 Martin Josefsson <gandalf@wlug.westbo.se> [NETFILTER]: nf_conntrack: rename struct nf_conntrack_protocol

Rename 'struct nf_conntrack_protocol' to 'struct nf_conntrack_l4proto' in
order to help distinguish it from 'struct nf_conntrack_l3proto'. It gets
rather confusing with 'nf_conntrack_protocol'.

Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se>
Signed-off-by: Patrick McHardy <kaber@trash.net>
94aec08ea426903a3fb3cafd4d8b900cd50df702 18-Sep-2006 Brian Haley <brian.haley@hp.com> [NETFILTER]: Change tunables to __read_mostly

Change some netfilter tunables to __read_mostly. Also fixed some
incorrect file reference comments while I was in there.

(this will be my last __read_mostly patch unless someone points out
something else that needs it)

Signed-off-by: Brian Haley <brian.haley@hp.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
39a27a35c5c1b5be499a0576a35c45a011788bf8 30-May-2006 Patrick McHardy <kaber@trash.net> [NETFILTER]: conntrack: add sysctl to disable checksumming

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
96f6bf82ea3abc77d255d5d554df5f349651f6de 06-Apr-2006 Patrick McHardy <kaber@trash.net> [NETFILTER]: Convert conntrack/ipt_REJECT to new checksumming functions

Besides removing lots of duplicate code, all converted users benefit
from improved HW checksum error handling. Tested with and without HW
checksums in almost all combinations.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
c1d10adb4a521de5760112853f42aaeefcec96eb 05-Jan-2006 Pablo Neira Ayuso <pablo@netfilter.org> [NETFILTER]: Add ctnetlink port for nf_conntrack

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
f16c910724250c1af0f53111b4c76505000819f6 05-Dec-2005 Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> [NETFILTER]: nf_conntrack: Fix missing check for ICMPv6 type

This makes nf_conntrack_icmpv6 check that ICMPv6 type isn't < 128
to avoid accessing out of array valid_new[] and invmap[].

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1 10-Nov-2005 Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> [NETFILTER]: Add nf_conntrack subsystem.

The existing connection tracking subsystem in netfilter can only
handle ipv4. There were basically two choices present to add
connection tracking support for ipv6. We could either duplicate all
of the ipv4 connection tracking code into an ipv6 counterpart, or (the
choice taken by these patches) we could design a generic layer that
could handle both ipv4 and ipv6 and thus requiring only one sub-protocol
(TCP, UDP, etc.) connection tracking helper module to be written.

In fact nf_conntrack is capable of working with any layer 3
protocol.

The existing ipv4 specific conntrack code could also not deal
with the pecularities of doing connection tracking on ipv6,
which is also cured here. For example, these issues include:

1) ICMPv6 handling, which is used for neighbour discovery in
ipv6 thus some messages such as these should not participate
in connection tracking since effectively they are like ARP
messages

2) fragmentation must be handled differently in ipv6, because
the simplistic "defrag, connection track and NAT, refrag"
(which the existing ipv4 connection tracking does) approach simply
isn't feasible in ipv6

3) ipv6 extension header parsing must occur at the correct spots
before and after connection tracking decisions, and there were
no provisions for this in the existing connection tracking
design

4) ipv6 has no need for stateful NAT

The ipv4 specific conntrack layer is kept around, until all of
the ipv4 specific conntrack helpers are ported over to nf_conntrack
and it is feature complete. Once that occurs, the old conntrack
stuff will get placed into the feature-removal-schedule and we will
fully kill it off 6 months later.

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>