linux.git/net/ipv6/netfilter, branch v2.6.15

[NETFILTER]: Fix incorrect dependency for IP6_NF_TARGET_NFQUEUE

2005-12-19T21:53:26+00:00

IP6_NF_TARGET_NFQUEUE depends on IP6_NF_IPTABLES, not IP_NF_IPTABLES.

Signed-off-by: Patrick McHardy 
Signed-off-by: David S. Miller

[NETFILTER]: nf_conntrack: Fix missing check for ICMPv6 type

2005-12-05T21:32:50+00:00

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 
Signed-off-by: Patrick McHardy 
Signed-off-by: David S. Miller

[NET]: Add const markers to various variables.

2005-11-30T00:21:38+00:00

the patch below marks various variables const in net/; the goal is to
move them to the .rodata section so that they can't false-share
cachelines with things that get written to, as well as potentially
helping gcc a bit with optimisations.  (these were found using a gcc
patch to warn about such variables)

Signed-off-by: Arjan van de Ven 
Signed-off-by: David S. Miller

[NETFILTER] fix leak of fragment queue at unloading nf_conntrack_ipv6

2005-11-14T23:28:45+00:00

This patch makes nf_conntrack_ipv6 free all IPv6 fragment queues at module
unloading time.  Also introduce a BUG_ON if we ever again have leaks in
the memory accounting.

Signed-off-by: Yasuyuki Kozakai 
Signed-off-by: Harald Welte 
Signed-off-by: David S. Miller

[NETFILTER] nf_conntrack: fix possibility of infinite loop while evicting nf_ct_frag6_queue

2005-11-14T23:28:18+00:00

This synchronizes nf_ct_reasm with ipv6 reassembly, and fixes a possibility
of an infinite loop if CPUs evict and create nf_ct_frag6_queue in parallel.

Signed-off-by: Yasuyuki Kozakai 
Signed-off-by: Harald Welte 
Signed-off-by: David S. Miller

[NETFILTER]: fix type of sysctl variables in nf_conntrack_ipv6

2005-11-14T23:27:43+00:00

These variables should be unsigned.  This fixes sysctl handler for
nf_ct_frag6_{low,high}_thresh.

Signed-off-by: Yasuyuki Kozakai 
Signed-off-by: Harald Welte 
Signed-off-by: David S. Miller

[NETFILTER]: cleanup IPv6 Netfilter Kconfig

2005-11-14T23:26:58+00:00

This removes linux 2.4 configs in comments as TODO lists.
And this also move the entry of nf_conntrack to top like IPv4 Netfilter
Kconfig.

Based on original patch by Krzysztof Piotr Oledzki .

Signed-off-by: Yasuyuki Kozakai 
Signed-off-by: Harald Welte 
Signed-off-by: David S. Miller

[NETFILTER]: Add nf_conntrack subsystem.

2005-11-10T00:38:16+00:00

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 
Signed-off-by: Harald Welte 
Signed-off-by: Arnaldo Carvalho de Melo

[NETFILTER]: Add "revision" support to arp_tables and ip6_tables

2005-10-31T18:36:08+00:00

Like ip_tables already has it for some time, this adds support for
having multiple revisions for each match/target.  We steal one byte from
the name in order to accomodate a 8 bit version number.

Signed-off-by: Harald Welte 
Signed-off-by: Arnaldo Carvalho de Melo

[NETFILTER]: Fix ip6_table.c build with NETFILTER_DEBUG enabled.

2005-10-15T23:15:38+00:00

Signed-off-by: Andrew Morton 
Signed-off-by: David S. Miller