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path: root/net/ipv6/ip6_tunnel.c
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2006-04-09[INET]: Move no-tunnel ICMP error to tunnel4/tunnel6Herbert Xu
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>
2006-03-28[INET]: Introduce tunnel4/tunnel6Herbert Xu
Basically this patch moves the generic tunnel protocol stuff out of xfrm4_tunnel/xfrm6_tunnel and moves it into the new files of tunnel4.c and tunnel6 respectively. The reason for this is that the problem that Hugo uncovered is only the tip of the iceberg. The real problem is that when we removed the dependency of ipip on xfrm4_tunnel we didn't really consider the module case at all. For instance, as it is it's possible to build both ipip and xfrm4_tunnel as modules and if the latter is loaded then ipip simply won't load. After considering the alternatives I've decided that the best way out of this is to restore the dependency of ipip on the non-xfrm-specific part of xfrm4_tunnel. This is acceptable IMHO because the intention of the removal was really to be able to use ipip without the xfrm subsystem. This is still preserved by this patch. So now both ipip/xfrm4_tunnel depend on the new tunnel4.c which handles the arbitration between the two. The order of processing is determined by a simple integer which ensures that ipip gets processed before xfrm4_tunnel. The situation for ICMP handling is a little bit more complicated since we may not have enough information to determine who it's for. It's not a big deal at the moment since the xfrm ICMP handlers are basically no-ops. In future we can deal with this when we look at ICMP caching in general. The user-visible change to this is the removal of the TUNNEL Kconfig prompts. This makes sense because it can only be used through IPCOMP as it stands. The addition of the new modules shouldn't introduce any problems since module dependency will cause them to be loaded. Oh and I also turned some unnecessary pskb's in IPv6 related to this patch to skb's. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-02-24[IPV6] ip6_tunnel: release cached dst on change of tunnel paramsHugo Santos
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>
2006-02-18[PATCH] missing ntohs() in ip6_tunnelAl Viro
->payload_len is net-endian Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2006-01-11[PATCH] capable/capability.h (net/)Randy Dunlap
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>
2006-01-09[NET]: Convert net/{ipv4,ipv6,sched} to netdev_privPatrick McHardy
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-01-07[IPV6]: Move nextheader offset to the IP6CBPatrick McHardy
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>
2005-11-09[IPV6]: ip6ip6_lock is not unlocked in error path.Ken-ichirou MATSUZAWA
From: Ken-ichirou MATSUZAWA <chamas@h4.dion.ne.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-11-08[NET]: kfree cleanupJesper Juhl
From: Jesper Juhl <jesper.juhl@gmail.com> This is the net/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in net/. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Arnaldo Carvalho de Melo <acme@conectiva.com.br> Acked-by: Marcel Holtmann <marcel@holtmann.org> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Andrew Morton <akpm@osdl.org>
2005-09-08[IPV6]: Don't redo xfrm_lookup for cached dst entriesPatrick McHardy
The xfrm lookup is already done when the dst entry is looked up first and stored in the cache. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-07-24[IPV6]: fix implicit declaration of function `xfrm6_tunnel_unregister'Cal Peake
Signed-off-by: Cal Peake <cp@absolutedigital.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-07-19[NET]: Make ipip/ip6_tunnel independant of XFRMPatrick McHardy
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-06-08[IPV6]: Update parm.link in ip6ip6_tnl_change()Gabor Fekete
Signed-off-by: Gabor Fekete <gfekete@cc.jyu.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!