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50fba2aa7c
linux/net/ipv4
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Herbert Xu 50fba2aa7c [INET]: Move no-tunnel ICMP error to tunnel4/tunnel6 
This patch moves the sending of ICMP messages when there are no IPv4/IPv6
tunnels present to tunnel4/tunnel6 respectively.  Please note that for now
if xfrm4_tunnel/xfrm6_tunnel is loaded then no ICMP messages will ever be
sent.  This is similar to how we handle AH/ESP/IPCOMP.

This move fixes the bug where we always send an ICMP message when there is
no ip6_tunnel device present for a given packet even if it is later handled
by IPsec.  It also causes ICMP messages to be sent when no IPIP tunnel is
present.

I've decided to use the "port unreachable" ICMP message over the current
value of "address unreachable" (and "protocol unreachable" by GRE) because
it is not ambiguous unlike the other ones which can be triggered by other
conditions.  There seems to be no standard specifying what value must be
used so this change should be OK.  In fact we should change GRE to use
this value as well.

Incidentally, this patch also fixes a fairly serious bug in xfrm6_tunnel
where we don't check whether the embedded IPv6 header is present before
dereferencing it for the inside source address.

This patch is inspired by a previous patch by Hugo Santos <hsantos@av.it.pt>.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2006-04-09 22:25:25 -07:00
..
ipvs [PATCH] sem2mutex: misc static one-file mutexes 2006-03-26 08:56:55 -08:00
netfilter [NETFILTER]: iptables 32bit compat layer 2006-04-01 02:25:19 -08:00
af_inet.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
ah4.c [IPSEC]: Kill unused decap state argument 2006-04-01 00:52:46 -08:00
arp.c [IPV4] ARP: Alloc acceptance of unsolicited ARP via netdevice sysctl. 2006-03-20 22:39:47 -08:00
datagram.c [NET]: Fix sparse warnings 2005-08-29 16:01:32 -07:00
devinet.c [PATCH] Notifier chain update: API changes 2006-03-27 08:44:50 -08:00
esp4.c [IPSEC]: Kill unused decap state argument 2006-04-01 00:52:46 -08:00
fib_frontend.c x86: Work around compiler code generation bug with -Os 2006-01-14 22:08:28 -08:00
fib_hash.c [INET_SOCK]: Move struct inet_sock & helper functions to net/inet_sock.h 2006-01-03 13:11:21 -08:00
fib_lookup.h [IPV4]: Prepare FIB core for RCU. 2005-08-29 16:08:31 -07:00
fib_rules.c [IPV4]: Add fib rule netlink notifications 2006-03-23 01:16:06 -08:00
fib_semantics.c [NETLINK]: illegal use of pid in rtnetlink 2006-02-09 16:43:41 -08:00
fib_trie.c [FIB_TRIE]: Fix leaf freeing. 2006-04-09 22:25:23 -07:00
icmp.c [IPV4]: Aggregate route entries with different TOS values 2006-03-25 01:38:55 -08:00
igmp.c [NET]: dev_put/dev_hold cleanup 2006-03-20 22:32:28 -08:00
inet_connection_sock.c [INET]: Fix typo in Arnaldo's connection sock compat fixups. 2006-03-20 22:52:32 -08:00
inet_diag.c [INET_DIAG]: Introduce sk_diag_fill 2006-01-09 14:56:56 -08:00
inet_hashtables.c [PATCH] s/;;/;/g 2006-03-24 07:33:24 -08:00
inet_timewait_sock.c [TWSK]: Introduce struct timewait_sock_ops 2006-01-03 13:10:54 -08:00
inetpeer.c [NET]: Change some "if (x) BUG();" to "BUG_ON(x);" 2006-01-09 14:16:18 -08:00
ip_forward.c [IPV4]: Remove some dead code from ip_forward() 2005-08-29 16:03:06 -07:00
ip_fragment.c [NET]: Endian-annotate struct iphdr 2006-01-06 13:24:29 -08:00
ip_gre.c [XFRM]: Fix SNAT-related crash in xfrm4_output_finish 2006-02-15 15:10:22 -08:00
ip_input.c [NETFILTER]: Keep conntrack reference until IPsec policy checks are done 2006-01-07 12:57:36 -08:00
ip_options.c [PATCH] capable/capability.h (net/) 2006-01-11 18:42:14 -08:00
ip_output.c [NETFILTER]: Fix fragmentation issues with bridge netfilter 2006-04-09 22:25:23 -07:00
ip_sockglue.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
ipcomp.c [IPSEC]: Kill unused decap state argument 2006-04-01 00:52:46 -08:00
ipconfig.c [NET]: Convert RTNL to mutex. 2006-03-20 22:23:58 -08:00
ipip.c [INET]: Move no-tunnel ICMP error to tunnel4/tunnel6 2006-04-09 22:25:25 -07:00
ipmr.c [NET]: dev_put/dev_hold cleanup 2006-03-20 22:32:28 -08:00
Kconfig [INET]: Introduce tunnel4/tunnel6 2006-03-28 17:02:46 -08:00
Makefile [INET]: Introduce tunnel4/tunnel6 2006-03-28 17:02:46 -08:00
multipath_drr.c [IPV4]: possible cleanups 2005-08-29 15:33:20 -07:00
multipath_random.c [IPV4]: Multipath modules need a license to prevent kernel tainting. 2005-06-13 14:29:06 -07:00
multipath_rr.c [IPV4]: Multipath modules need a license to prevent kernel tainting. 2005-06-13 14:29:06 -07:00
multipath_wrandom.c [IPV4] multipath_wrandom: Fix softirq-unsafe spin lock usage 2006-02-02 16:59:16 -08:00
multipath.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
netfilter.c [NETFILTER]: Rename init functions. 2006-03-28 17:02:48 -08:00
proc.c [PATCH] percpu data: only iterate over possible CPUs 2006-02-05 11:06:51 -08:00
protocol.c [TCP]: Move the tcp sock states to net/tcp_states.h 2005-08-29 15:41:54 -07:00
raw.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
route.c [IPV4]: Aggregate route entries with different TOS values 2006-03-25 01:38:55 -08:00
syncookies.c [ICSK]: Rename struct tcp_func to struct inet_connection_sock_af_ops 2006-01-03 13:10:38 -08:00
sysctl_net_ipv4.c [TCP]: sysctl to allow TCP window > 32767 sans wscale 2006-03-20 22:40:29 -08:00
tcp_bic.c [TCP] BIC: spelling and whitespace 2006-01-03 13:10:27 -08:00
tcp_cong.c [TCP]: Fix RFC2465 typo. 2006-03-28 17:02:47 -08:00
tcp_cubic.c [TCP] cubic: use Newton-Raphson 2006-01-03 13:11:09 -08:00
tcp_diag.c [INET_DIAG]: Move the tcp_diag interface to the proper place 2005-08-29 15:57:54 -07:00
tcp_highspeed.c [TCP]: tcp_highspeed: fix AIMD table out-of-bounds access 2006-03-12 20:39:39 -08:00
tcp_htcp.c [TCP] H-TCP: Better time accounting 2006-03-20 22:23:10 -08:00
tcp_hybla.c [TCP]: fix congestion window update when using TSO deferal 2005-11-10 16:53:30 -08:00
tcp_input.c [TCP] mtu probing: move tcp-specific data out of inet_connection_sock 2006-03-20 21:32:58 -08:00
tcp_ipv4.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
tcp_minisocks.c [IPV6]: Introduce inet6_timewait_sock 2006-01-03 13:10:47 -08:00
tcp_output.c [TCP]: sysctl to allow TCP window > 32767 sans wscale 2006-03-20 22:40:29 -08:00
tcp_scalable.c [TCP]: add tcp_slow_start helper 2005-11-10 17:07:24 -08:00
tcp_timer.c [TCP]: MTU probing 2006-03-20 17:53:41 -08:00
tcp_vegas.c [TCP] tcp_vegas: Fix slow start 2006-01-04 13:59:32 -08:00
tcp_westwood.c [INET_DIAG]: Rename tcp_diag.[ch] to inet_diag.[ch] 2005-08-29 15:57:48 -07:00
tcp.c Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2006-03-25 08:39:20 -08:00
tunnel4.c [INET]: Move no-tunnel ICMP error to tunnel4/tunnel6 2006-04-09 22:25:25 -07:00
udp.c [NET]: Identation & other cleanups related to compat_[gs]etsockopt cset 2006-03-20 22:48:35 -08:00
xfrm4_input.c [INET]: Move no-tunnel ICMP error to tunnel4/tunnel6 2006-04-09 22:25:25 -07:00
xfrm4_output.c [XFRM]: Fix SNAT-related crash in xfrm4_output_finish 2006-02-15 15:10:22 -08:00
xfrm4_policy.c [IPSEC]: Use TOS when doing tunnel lookups 2006-02-23 16:19:26 -08:00
xfrm4_state.c [XFRM]: IPsec tunnel wildcard address support 2006-01-13 14:34:36 -08:00
xfrm4_tunnel.c [IPSEC]: Kill unused decap state argument 2006-04-01 00:52:46 -08:00