Commit graph

358 commits

Author SHA1 Message Date
Dave Jones
c750360938 [IPV6]: remove useless test in ip6_append_data
We've already dereferenced 'np' a dozen
times at this point, so it's safe to say it's not null.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:44:52 -08:00
Ingo Molnar
57b47a53ec [NET]: sem2mutex part 2
Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:35:41 -08:00
Arjan van de Ven
4a3e2f711a [NET] sem2mutex: net/
Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:33:17 -08:00
Arnaldo Carvalho de Melo
c4d9390941 [ICSK]: Introduce inet_csk_ctl_sock_create
Consolidating open coded sequences in tcp and dccp, v4 and v6.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 22:01:03 -08:00
David S. Miller
d76e60a5b5 [IPV6]: Fix some code/comment formatting in ip6_dst_output().
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 21:35:50 -08:00
Jamal Hadi Salim
9500e8a81f [IPSEC]: Sync series - fast path
Fast path sequence updates that will generate ipsec async
events

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 19:15:29 -08:00
Patrick McHardy
c4b8851392 [NETFILTER]: x_tables: replace IPv4/IPv6 policy match by address family independant version
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:03:40 -08:00
Patrick McHardy
f2ffd9eeda [NETFILTER]: Move ip6_masked_addrcmp to include/net/ipv6.h
Replace netfilter's ip6_masked_addrcmp by a more efficient version
in include/net/ipv6.h to make it usable without module dependencies.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:03:16 -08:00
Patrick McHardy
c498673474 [NETFILTER]: x_tables: add xt_{match,target} arguments to match/target functions
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:02:56 -08:00
Patrick McHardy
1c524830d0 [NETFILTER]: x_tables: pass registered match/target data to match/target functions
This allows to make decisions based on the revision (and address family
with a follow-up patch) at runtime.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:02:15 -08:00
Patrick McHardy
7f9397138e [NETFILTER]: Convert ip6_tables matches/targets to centralized error checking
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:01:43 -08:00
Patrick McHardy
3cdc7c953e [NETFILTER]: Change {ip,ip6,arp}_tables to use centralized error checking
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 18:00:36 -08:00
Yasuyuki Kozakai
6ea46c9c12 [NETFILTER]: nf_conntrack: use ipv6_addr_equal in nf_ct_reasm
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>
2006-03-20 17:58:44 -08:00
Harald Welte
dc808fe28d [NETFILTER] nf_conntrack: clean up to reduce size of 'struct nf_conn'
This patch moves all helper related data fields of 'struct nf_conn'
into a separate structure 'struct nf_conn_help'.  This new structure
is only present in conntrack entries for which we actually have a
helper loaded.

Also, this patch cleans up the nf_conntrack 'features' mechanism to
resemble what the original idea was: Just glue the feature-specific
data structures at the end of 'struct nf_conn', and explicitly
re-calculate the pointer to it when needed rather than keeping
pointers around.

Saves 20 bytes per conntrack on my x86_64 box. A non-helped conntrack
is 276 bytes. We still need to save another 20 bytes in order to fit
into to target of 256bytes.

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:56:32 -08:00
John Heffner
5d424d5a67 [TCP]: MTU probing
Implementation of packetization layer path mtu discovery for TCP, based on
the internet-draft currently found at
<http://www.ietf.org/internet-drafts/draft-ietf-pmtud-method-05.txt>.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:53:41 -08:00
Jesper Juhl
2b191befe2 [IPCOMP6]: don't check vfree() argument for NULL.
vfree does it's own NULL checking, so checking a pointer before
handing it to vfree is pointless.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:46:29 -08:00
YOSHIFUJI Hideaki
e843b9e1be [IPV6]: ROUTE: Ensure to accept redirects from nexthop for the target.
It is possible to get redirects from nexthop of "more-specific"
routes.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:07:49 -08:00
YOSHIFUJI Hideaki
09c884d4c3 [IPV6]: ROUTE: Add accept_ra_rt_info_max_plen sysctl.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:07:03 -08:00
YOSHIFUJI Hideaki
e317da9622 [IPV6]: ROUTE: Flag RTF_DEFAULT for Route Infomation for ::/0.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:42 -08:00
YOSHIFUJI Hideaki
70ceb4f539 [IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:06:24 -08:00
YOSHIFUJI Hideaki
52e1635631 [IPV6]: ROUTE: Add router_probe_interval sysctl.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:05:47 -08:00
YOSHIFUJI Hideaki
930d6ff2e2 [IPV6]: ROUTE: Add accept_ra_rtr_pref sysctl.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:05:30 -08:00
YOSHIFUJI Hideaki
270972554c [IPV6]: ROUTE: Add Router Reachability Probing (RFC4191).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:05:13 -08:00
YOSHIFUJI Hideaki
ebacaaa0fd [IPV6]: ROUTE: Add support for Router Preference (RFC4191).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:04:53 -08:00
YOSHIFUJI Hideaki
8238dd0698 [IPV6]: ROUTE: Handle finding the next best route in reachability in BACKTRACK().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:04:35 -08:00
YOSHIFUJI Hideaki
bb133964e0 [IPV6]: ROUTE: Try finding the next best route.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:01:43 -08:00
YOSHIFUJI Hideaki
1ddef044ed [IPV6]: ROUTE: Clean up rt6_select() code path in ip6_route_{intput,output}().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:01:24 -08:00
YOSHIFUJI Hideaki
118f8c1654 [IPV6]: ROUTE: Try selecting better route for non-default routes as well.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:01:06 -08:00
YOSHIFUJI Hideaki
045927ff84 [IPV6]: ROUTE: More strict check for default routers in rt6_get_dflt_router().
Check RTF_ADDRCONF|RTF_DEFAULT in rt6_get_dflt_router().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:00:48 -08:00
YOSHIFUJI Hideaki
554cfb7ee5 [IPV6]: ROUTE: Eliminate lock for default route pointer.
And prepare for more advanced router selection.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:00:26 -08:00
YOSHIFUJI Hideaki
519fbd8715 [IPV6]: ROUTE: Clean-up cow'ing in ip6_route_{intput,output}().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 17:00:05 -08:00
YOSHIFUJI Hideaki
e40cf3533c [IPV6]: ROUTE: Convert rt6_cow() to rt6_alloc_cow().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:59:27 -08:00
YOSHIFUJI Hideaki
fb9de91ea8 [IPV6]: ROUTE: Clean up reference counting / unlocking for returning object.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:59:08 -08:00
YOSHIFUJI Hideaki
d5315b500b [IPV6]: ROUTE: Unify two code paths for pmtu disc.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:58:48 -08:00
YOSHIFUJI Hideaki
299d993908 [IPV6]: ROUTE: Add rt6_alloc_clone() for cloning route allocation.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:58:32 -08:00
YOSHIFUJI Hideaki
76f9edd17d [IPV6]: ROUTE: Copy u.dst.error for RTF_REJECT routes when cloning.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:56:50 -08:00
YOSHIFUJI Hideaki
a1e783634a [IPV6]: ROUTE: Set appropriate information before inserting a route.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:56:32 -08:00
YOSHIFUJI Hideaki
95a9a5ba02 [IPV6]: ROUTE: Split up rt6_cow() for future changes.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:55:51 -08:00
YOSHIFUJI Hideaki
c4fd30eb18 [IPV6]: ADDRCONF: Add accept_ra_pinfo sysctl.
This controls whether we accept Prefix Information in RAs.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:55:26 -08:00
YOSHIFUJI Hideaki
65f5c7c114 [IPV6]: ROUTE: Add accept_ra_defrtr sysctl.
This controls whether we accept default router information
in RAs.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:55:08 -08:00
YOSHIFUJI Hideaki
073a8e0e15 [IPV6]: ADDRCONF: Split up ipv6_generate_eui64() by device type.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:54:49 -08:00
YOSHIFUJI Hideaki
955189efb4 [IPV6]: ADDRCONF: Use our standard algorithm for randomized ifid.
RFC 3041 describes an algorithm to generate random interface
identifier.  In RFC 3041bis, it is allowed to use different
algorithm than one described in RFC 3041.

So, let's use our standard pseudo random algorithm to simplify
our implementation.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:54:09 -08:00
YOSHIFUJI Hideaki
74a3a0ed90 [IPV6]: TUNNEL6: Don't try to add multicast route twice.
Since addrconf_add_dev() has already called addrconf_add_mroute()
to added route for multicast prefix, there's no point to call it
again in addrconf_ip6_tnl_config().

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-20 16:51:48 -08:00
Herbert Xu
3759fa9c55 [TCP]: Fix zero port problem in IPv6
When we link a socket into the hash table, we need to make sure that we
set the num/port fields so that it shows us with a non-zero port value
in proc/netlink and on the wire.  This code and comment is copied over
from the IPv4 stack as is.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2006-03-13 14:26:12 -08:00
Patrick McHardy
baa829d892 [IPV4/6]: Fix UFO error propagation
When ufo_append_data fails err is uninitialized, but returned back.
Strangely gcc doesn't notice it.

Coverity #901 and #902

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-12 20:39:40 -08:00
Patrick McHardy
f8dc01f543 [XFRM]: Fix leak in ah6_input
tmp_hdr is not freed when ipv6_clear_mutable_options fails.

Coverity #650

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-12 20:39:37 -08:00
Brian Haley
0d27b42739 [IPV6]: fix ipv6_saddr_score struct element
The scope element in the ipv6_saddr_score struct used in 
ipv6_dev_get_saddr() is an unsigned integer, but __ipv6_addr_src_scope() 
returns a signed integer (and can return -1).

Signed-off-by: Brian Haley <brian.haley@hp.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-11 18:50:14 -08:00
Thomas Graf
850a9a4e3c [NETFILTER] ip_queue: Fix wrong skb->len == nlmsg_len assumption
The size of the skb carrying the netlink message is not
equivalent to the length of the actual netlink message
due to padding. ip_queue matches the length of the payload
against the original packet size to determine if packet
mangling is desired, due to the above wrong assumption
arbitary packets may not be mangled depening on their
original size.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-03-07 14:56:12 -08:00
Patrick McHardy
bafac2a512 [NETFILTER]: Restore {ipt,ip6t,ebt}_LOG compatibility
The nfnetlink_log infrastructure changes broke compatiblity of the LOG
targets. They currently use whatever log backend was registered first,
which means that if ipt_ULOG was loaded first, no messages will be printed
to the ring buffer anymore.

Restore compatiblity by using the old log functions by default and only use
the nf_log backend if the user explicitly said so.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-27 13:04:17 -08:00
YOSHIFUJI Hideaki
d91675f9c7 [IPV6]: Do not ignore IPV6_MTU socket option.
Based on patch by Hoerdt Mickael <hoerdt@clarinet.u-strasbg.fr>.

Signed-off-by: YOSHIFUJI Hideaki <yosufuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-24 13:18:33 -08:00
Hugo Santos
0c0888908d [IPV6] ip6_tunnel: release cached dst on change of tunnel params
The included patch fixes ip6_tunnel to release the cached dst entry
when the tunnel parameters (such as tunnel endpoints) are changed so
they are used immediatly for the next encapsulated packets.

Signed-off-by: Hugo Santos <hsantos@av.it.pt>
Acked-by: Ville Nuorvala <vnuorval@tcs.hut.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-24 13:16:25 -08:00
Al Viro
cc6cdac0cf [PATCH] missing ntohs() in ip6_tunnel
->payload_len is net-endian

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-02-18 16:02:18 -05:00
Yasuyuki Kozakai
763ecff187 [NETFILTER]: nf_conntrack: attach conntrack to locally generated ICMPv6 error
Locally generated ICMPv6 errors should be associated with the conntrack
of the original packet. Since the conntrack entry may not be in the hash
tables (for the first packet), it must be manually attached.

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>
2006-02-15 15:24:15 -08:00
Yasuyuki Kozakai
08857fa745 [NETFILTER]: nf_conntrack: attach conntrack to TCP RST generated by ip6t_REJECT
TCP RSTs generated by the REJECT target should be associated with the
conntrack of the original TCP packet. Since the conntrack entry is
usually not is the hash tables, it must be manually attached.

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>
2006-02-15 15:23:28 -08:00
Nicolas DICHTEL
6d3e85ecf2 [IPV6] Don't store dst_entry for RAW socket
Signed-off-by: Nicolas DICHTEL <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-13 15:56:13 -08:00
Kristian Slavov
9908104935 [IPV6]: Address autoconfiguration does not work after device down/up cycle
If you set network interface down and up again, the IPv6 address
autoconfiguration does not work. 'ip addr' shows that the link-local
address is in tentative state. We don't even react to periodical router
advertisements.

During NETDEV_DOWN we clear IF_READY, and we don't set it back in
NETDEV_UP. While starting to perform DAD on the link-local address, we
notice that the device is not in IF_READY, and we abort autoconfiguration
process (which would eventually send router solicitations).

Acked-by: Juha-Matti Tapio <jmtapio@verkkotelakka.net>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-08 16:13:28 -08:00
Al Viro
e80e28b6b6 [PATCH] net/ipv6/mcast.c NULL noise removal
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-02-07 20:58:56 -05:00
Al Viro
1b8623545b [PATCH] remove bogus asm/bug.h includes.
A bunch of asm/bug.h includes are both not needed (since it will get
pulled anyway) and bogus (since they are done too early).  Removed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-02-07 20:56:35 -05:00
Linus Torvalds
98bd0c07b6 Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2006-02-05 11:10:29 -08:00
Eric Dumazet
88a2a4ac6b [PATCH] percpu data: only iterate over possible CPUs
percpu_data blindly allocates bootmem memory to store NR_CPUS instances of
cpudata, instead of allocating memory only for possible cpus.

As a preparation for changing that, we need to convert various 0 -> NR_CPUS
loops to use for_each_cpu().

(The above only applies to users of asm-generic/percpu.h.  powerpc has gone it
alone and is presently only allocating memory for present CPUs, so it's
currently corrupting memory).

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Cc: Anton Blanchard <anton@samba.org>
Acked-by: William Irwin <wli@holomorphy.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-02-05 11:06:51 -08:00
Patrick McHardy
0047c65a60 [NETFILTER]: Prepare {ipt,ip6t}_policy match for x_tables unification
The IPv4 and IPv6 version of the policy match are identical besides address
comparison and the data structure used for userspace communication. Unify
the data structures to break compatiblity now (before it is released), so
we can port it to x_tables in 2.6.17.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-04 23:51:28 -08:00
Patrick McHardy
878c41ce57 [NETFILTER]: Fix ip6t_policy address matching
Fix two bugs in ip6t_policy address matching:
- misorder arguments to ip6_masked_addrcmp, mask must be the second argument
- inversion incorrectly applied to the entire expression instead of just
  the address comparison

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-04 23:51:27 -08:00
Patrick McHardy
e55f1bc5dc [NETFILTER]: Check policy length in policy match strict mode
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-04 23:51:26 -08:00
Kirill Korotaev
ee4bb818ae [NETFILTER]: Fix possible overflow in netfilters do_replace()
netfilter's do_replace() can overflow on addition within SMP_ALIGN()
and/or on multiplication by NR_CPUS, resulting in a buffer overflow on
the copy_from_user().  In practice, the overflow on addition is
triggerable on all systems, whereas the multiplication one might require
much physical memory to be present due to the check above.  Either is
sufficient to overwrite arbitrary amounts of kernel memory.

I really hate adding the same check to all 4 versions of do_replace(),
but the code is duplicate...

Found by Solar Designer during security audit of OpenVZ.org

Signed-Off-By: Kirill Korotaev <dev@openvz.org>
Signed-Off-By: Solar Designer <solar@openwall.com>
Signed-off-by: Patrck McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-04 23:51:25 -08:00
Herbert Xu
6f4b6ec1cf [IPV6]: Fix illegal dst locking in softirq context.
On Tue, Jan 31, 2006 at 10:24:32PM +0100, Ingo Molnar wrote:
>
>  [<c04de9e8>] _write_lock+0x8/0x10
>  [<c0499015>] inet6_destroy_sock+0x25/0x100
>  [<c04b8672>] tcp_v6_destroy_sock+0x12/0x20
>  [<c046bbda>] inet_csk_destroy_sock+0x4a/0x150
>  [<c047625c>] tcp_rcv_state_process+0xd4c/0xdd0
>  [<c047d8e9>] tcp_v4_do_rcv+0xa9/0x340
>  [<c047eabb>] tcp_v4_rcv+0x8eb/0x9d0

OK this is definitely broken.  We should never touch the dst lock in
softirq context.  Since inet6_destroy_sock may be called from that
context due to the asynchronous nature of sockets, we can't take the
lock there.

In fact this sk_dst_reset is totally redundant since all IPv6 sockets
use inet_sock_destruct as their socket destructor which always cleans
up the dst anyway.  So the solution is to simply remove the call.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-02 17:01:13 -08:00
Herbert Xu
4641e7a334 [IPV6]: Don't hold extra ref count in ipv6_ifa_notify
Currently the logic in ipv6_ifa_notify is to hold an extra reference
count for addrconf dst's that get added to the routing table.  Thus,
when addrconf dst entries are taken out of the routing table, we need
to drop that dst.  However, addrconf dst entries may be removed from
the routing table by means other than __ipv6_ifa_notify.

So we're faced with the choice of either fixing up all places where
addrconf dst entries are removed, or dropping the extra reference count
altogether.

I chose the latter because the ifp itself always holds a dst reference
count of 1 while it's alive.  This is dropped just before we kfree the
ifp object.  Therefore we know that in __ipv6_ifa_notify we will always
hold that count.

This bug was found by Eric W. Biederman.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-02 16:55:45 -08:00
Eric W. Biederman
78b910429e [IPV6] tcp_v6_send_synack: release the destination
This patch fix dst reference counting in tcp_v6_send_synack

Analysis:
Currently tcp_v6_send_synack is never called with a dst entry
so dst always comes in as NULL.

ip6_dst_lookup calls ip6_route_output which calls dst_hold
before it returns the dst entry.   Neither xfrm_lookup
nor tcp_make_synack consume the dst entry so we still have
a dst_entry with a bumped refrence count at the end of
this function.

Therefore we need to call dst_release just before we return
just like tcp_v4_send_synack does.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-31 17:51:44 -08:00
David L Stevens
7add2a4398 [IPV6] MLDv2: fix change records when transitioning to/from inactive
The following patch fixes these problems in MLDv2:

1) Add/remove "delete" records for sending change reports when
        addition of a filter results in that filter transitioning to/from
        inactive. [same as recent IPv4 IGMPv3 fix]
2) Remove 2 redundant "group_type" checks (can't be IPV6_ADDR_ANY
        within that loop, so checks are always true)
3) change an is_in() "return 0" to "return type == MLD2_MODE_IS_INCLUDE".
        It should always be "0" to get here, but it improves code locality 
        to not assume it, and if some race allowed otherwise, doing
        the check would return the correct result.

Signed-off-by: David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-24 13:06:39 -08:00
Yasuyuki Kozakai
f0daaa654a [NETFILTER] ip6tables: whitespace and indent cosmetic cleanup
Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-17 02:39:39 -08:00
Yasuyuki Kozakai
6dd42af790 [NETFILTER] Makefile cleanup
These are replaced with x_tables matches and no longer exist.

Signed-off-by: Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-17 02:38:56 -08:00
Benoit Boissinot
ccc91324a1 [NETFILTER] ip[6]t_policy: Fix compilation warnings
ip[6]t_policy argument conversion slipped when merging with x_tables

Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-17 02:26:34 -08:00
YOSHIFUJI Hideaki
9343e79a7b [IPV6]: Preserve procfs IPV6 address output format
Procfs always output IPV6 addresses without the colon
characters, and we cannot change that.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-17 02:10:53 -08:00
Patrick McHardy
ee51b1b6ce [XFRM]: IPsec tunnel wildcard address support
When the source address of a tunnel is given as 0.0.0.0 do a routing lookup
to get the real source address for the destination and fill that into the
acquire message. This allows to specify policies like this:

spdadd 172.16.128.13/32 172.16.0.0/20 any -P out ipsec
        esp/tunnel/0.0.0.0-x.x.x.x/require;
spdadd 172.16.0.0/20 172.16.128.13/32 any -P in ipsec
        esp/tunnel/x.x.x.x-0.0.0.0/require;

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-13 14:34:36 -08:00
Joe Perches
46b86a2da0 [NET]: Use NIP6_FMT in kernel.h
There are errors and inconsistency in the display of NIP6 strings.
	ie: net/ipv6/ip6_flowlabel.c

There are errors and inconsistency in the display of NIPQUAD strings too.
	ie: net/netfilter/nf_conntrack_ftp.c

This patch:
	adds NIP6_FMT to kernel.h
	changes all code to use NIP6_FMT
	fixes net/ipv6/ip6_flowlabel.c
	adds NIPQUAD_FMT to kernel.h
	fixes net/netfilter/nf_conntrack_ftp.c
	changes a few uses of "%u.%u.%u.%u" to NIPQUAD_FMT for symmetry to NIP6_FMT

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-13 14:29:07 -08:00
Harald Welte
2e4e6a17af [NETFILTER] x_tables: Abstraction layer for {ip,ip6,arp}_tables
This monster-patch tries to do the best job for unifying the data
structures and backend interfaces for the three evil clones ip_tables,
ip6_tables and arp_tables.  In an ideal world we would never have
allowed this kind of copy+paste programming... but well, our world
isn't (yet?) ideal.

o introduce a new x_tables module
o {ip,arp,ip6}_tables depend on this x_tables module
o registration functions for tables, matches and targets are only
  wrappers around x_tables provided functions
o all matches/targets that are used from ip_tables and ip6_tables
  are now implemented as xt_FOOBAR.c files and provide module aliases
  to ipt_FOOBAR and ip6t_FOOBAR
o header files for xt_matches are in include/linux/netfilter/,
  include/linux/netfilter_{ipv4,ipv6} contains compatibility wrappers
  around the xt_FOOBAR.h headers

Based on this patchset we're going to further unify the code,
gradually getting rid of all the layer 3 specific assumptions.

Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-12 14:06:43 -08:00
Randy Dunlap
4fc268d24c [PATCH] capable/capability.h (net/)
net: Use <linux/capability.h> where capable() is used.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-11 18:42:14 -08:00
Kris Katterjohn
8b3a70058b [NET]: Remove more unneeded typecasts on *malloc()
This removes more unneeded casts on the return value for kmalloc(),
sock_kmalloc(), and vmalloc().

Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-11 16:32:14 -08:00
David Woodhouse
ae0f7d5f83 [IPV6]: Avoid calling ip6_xmit() with NULL sk
The ip6_xmit() function now assumes that its sk argument is non-NULL,
which isn't currently true when TCPv6 code is sending RST or ACK
packets. This fixes that code to use a socket of its own for sending
such packets, as TCPv4 does. (Thanks Andi for the pointer).

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-11 16:32:13 -08:00
David S. Miller
82bf7e97ac [NET]: Some more missing include/etherdevice.h includes
For compare_ether_addr()

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-11 16:32:11 -08:00
David S. Miller
5bf887f2ff [IPV6]: Fix modular build with netfilter enabled.
Also, drop __exit marker from ipv6_netfilter_fini() as this
can be invoked from inet6_init() error handling paths.

Based upon a report from Stephen Hemminger.

Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-10 21:02:21 -08:00
Patrick McHardy
babbdb1a18 [NETFILTER]: Fix timeout sysctls on big-endian 64bit architectures
The connection tracking timeout variables are unsigned long, but
proc_dointvec_jiffies is used with sizeof(unsigned int) in the sysctl
tables. Since there is no proc_doulongvec_jiffies function, change the
timeout variables to unsigned int.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-10 12:54:35 -08:00
Patrick McHardy
bb94aa169e [NETFILTER]: net/ipv[46]/netfilter.c cleanups
Don't wrap entire file in #ifdef CONFIG_NETFILTER, remove a few
unneccessary includes.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-10 12:54:29 -08:00
Kris Katterjohn
d3f4a687f6 [NET]: Change memcmp(,,ETH_ALEN) to compare_ether_addr()
This changes some memcmp(one,two,ETH_ALEN) to compare_ether_addr(one,two).

Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-10 12:54:28 -08:00
Patrick McHardy
a2c2064f7f [IPV6]: Set skb->priority in ip6_output.c
Set skb->priority = sk->sk_priority as in raw.c and IPv4.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-09 14:16:31 -08:00
Patrick McHardy
2941a48631 [NET]: Convert net/{ipv4,ipv6,sched} to netdev_priv
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-09 14:16:03 -08:00
Pekka Enberg
f9f7500521 [PATCH] slab: remove unused align parameter from alloc_percpu
__alloc_percpu and alloc_percpu both take an 'align' argument which is
completely ignored.  snmp6_mib_init() in net/ipv6/af_inet6.c attempts to use
it, but it will be ignored.  Therefore, remove the 'align' argument and fixup
the lone caller.

Signed-off-by: Matthew Dobson <colpatch@us.ibm.com>
Acked-by: Manfred Spraul <manfred@colorfullife.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:12:39 -08:00
Adrian Bunk
9f5336e218 [IPV6]: small cleanups
This patch contains the following cleanups:
- addrconf.c: make addrconf_dad_stop() static
- inet6_connection_sock.c should #include <net/inet6_connection_sock.h>
  for getting the prototypes of it's global functions

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-07 13:24:25 -08:00
Patrick McHardy
e16a8f0b8c [NETFILTER]: Add ipt_policy/ip6t_policy matches
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-07 12:57:38 -08:00
Patrick McHardy
3e3850e989 [NETFILTER]: Fix xfrm lookup in ip_route_me_harder/ip6_route_me_harder
ip_route_me_harder doesn't use the port numbers of the xfrm lookup and
uses ip_route_input for non-local addresses which doesn't do a xfrm
lookup, ip6_route_me_harder doesn't do a xfrm lookup at all.

Use xfrm_decode_session and do the lookup manually, make sure both
only do the lookup if the packet hasn't been transformed already.

Makeing sure the lookup only happens once needs a new field in the
IP6CB, which exceeds the size of skb->cb. The size of skb->cb is
increased to 48b. Apparently the IPv6 mobile extensions need some
more room anyway.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-07 12:57:33 -08:00
Patrick McHardy
8cdfab8a43 [IPV4]: reset IPCB flags when neccessary
Reset IPSKB_XFRM_TUNNEL_SIZE flags in ipip and ip_gre hard_start_xmit
function before the packet reenters IP. This is neccessary so the
encapsulated packets are checked not to be oversized in xfrm4_output.c
again. Reset all flags in sit when a packet changes its address family.

Also remove some obsolete IPSKB flags.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-07 12:57:32 -08:00
Patrick McHardy
b05e106698 [IPV4/6]: Netfilter IPsec input hooks
When the innermost transform uses transport mode the decapsulated packet
is not visible to netfilter. Pass the packet through the PRE_ROUTING and
LOCAL_IN hooks again before handing it to upper layer protocols to make
netfilter-visibility symetrical to the output path.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-07 12:57:31 -08:00
Patrick McHardy
951dbc8ac7 [IPV6]: Move nextheader offset to the IP6CB
Move nextheader offset to the IP6CB to make it possible to pass a
packet to ip6_input_finish multiple times and have it skip already
parsed headers. As a nice side effect this gets rid of the manual
hopopts skipping in ip6_input_finish.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-07 12:57:29 -08:00
Patrick McHardy
16a6677fdf [XFRM]: Netfilter IPsec output hooks
Call netfilter hooks before IPsec transforms. Packets visit the
FORWARD/LOCAL_OUT and POST_ROUTING hook before the first encapsulation
and the LOCAL_OUT and POST_ROUTING hook before each following tunnel mode
transform.

Patch from Herbert Xu <herbert@gondor.apana.org.au>:

Move the loop from dst_output into xfrm4_output/xfrm6_output since they're
the only ones who need to it. xfrm{4,6}_output_one() processes the first SA
all subsequent transport mode SAs and is called in a loop that calls the
netfilter hooks between each two calls.

In order to avoid the tail call issue, I've added the inline function
nf_hook which is nf_hook_slow plus the empty list check.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-07 12:57:28 -08:00
Kris Katterjohn
46f25dffba [NET]: Change 1500 to ETH_DATA_LEN in some files
These patches add the header linux/if_ether.h and change 1500 to
ETH_DATA_LEN in some files.

Signed-off-by: Kris Katterjohn <kjak@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-05 16:48:56 -08:00
Patrick McHardy
22dea562bb [NETFILTER]: Export ip6_masked_addrcmp, don't pass IPv6 addresses on stack
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-05 12:21:34 -08:00
Patrick McHardy
b777e0ce74 [NETFILTER]: make ipv6_find_hdr() find transport protocol header
The original ipv6_find_hdr() finds the specified header in IPv6 packets.
This makes it possible to get transport header so that we can kill similar
loop in ip6_match_packet().

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-05 12:21:16 -08:00
Pablo Neira Ayuso
c1d10adb4a [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>
2006-01-05 12:19:05 -08:00
YOSHIFUJI Hideaki
181a46a56e [NETFILTER]: Use macro for spinlock_t/rwlock_t initializations/definition.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-04 13:56:54 -08:00
YOSHIFUJI Hideaki
196433c5b7 [IPV6]: Use macro for rwlock_t initialization.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-04 13:56:31 -08:00
Christoph Hellwig
b5e5fa5e09 [NET]: Add a dev_ioctl() fallback to sock_ioctl()
Currently all network protocols need to call dev_ioctl as the default
fallback in their ioctl implementations.  This patch adds a fallback
to dev_ioctl to sock_ioctl if the protocol returned -ENOIOCTLCMD.
This way all the procotol ioctl handlers can be simplified and we don't
need to export dev_ioctl.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-03 14:18:33 -08:00