kernel.git/include/net/ip6_fib.h, branch linux-2.6.25.y

[IPV6] Minor cleanup: remove unused definitions in net/ip6_fib.h

2008-02-08T02:11:49Z

This patch removes some unused definitions and one method typedef declaration (f_pnode) in include/net/ip6_fib.h, as they are not used in the kernel. Signed-off-by: Rami Rosen Signed-off-by: David S. Miller

[XFRM] IPv6: Fix dst/routing check at transformation.

2008-01-28T22:59:36Z

IPv6 specific thing is wrongly removed from transformation at net-2.6.25. This patch recovers it with current design. o Update "path" of xfrm_dst since IPv6 transformation should care about routing changes. It is required by MIPv6 and off-link destined IPsec. o Rename nfheader_len which is for non-fragment transformation used by MIPv6 to rt6i_nfheader_len as IPv6 name space. Signed-off-by: Masahide NAKAMURA Acked-by: Herbert Xu Signed-off-by: David S. Miller

[IPV6]: route6 remove ifdef for fib_rules

2008-01-28T22:56:59Z

The patch defines the usual static inline functions when the code is disabled for fib6_rules. That's allow to remove some ifdef in route.c file and make the code a little more clear. Signed-off-by: Daniel Lezcano Acked-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller

[IPV6]: Make fib6_rules_init to return an error code.

2008-01-28T22:56:46Z

When the fib_rules initialization finished, no return code is provided so there is no way to know, for the caller, if the initialization has been successful or has failed. This patch fix that. Signed-off-by: Daniel Lezcano Acked-by: Benjamin Thery Signed-off-by: David S. Miller

[IPV6]: Make fib6_init to return an error code.

2008-01-28T22:56:45Z

If there is an error in the initialization function, nothing is followed up to the caller. So I add a return value to be set for the init function. Signed-off-by: Daniel Lezcano Acked-by: Benjamin Thery Signed-off-by: David S. Miller

[IPV6]: Move nfheader_len into rt6_info

2008-01-28T22:53:37Z

The dst member nfheader_len is only used by IPv6. It's also currently creating a rather ugly alignment hole in struct dst. Therefore this patch moves it from there into struct rt6_info. It also reorders the fields in rt6_info to minimize holes. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller

[IPV6] XFRM: Fix connected socket to use transformation.

2007-10-10T23:48:32Z

When XFRM policy and state are ready after TCP connection is started, the traffic should be transformed immediately, however it does not on IPv6 TCP. It depends on a dst cache replacement policy with connected socket. It seems that the replacement is always done for IPv4, however, on IPv6 case it is done only when routing cookie is changed. This patch fix that non-transformation dst can be changed to transformation one. This behavior is required by MIPv6 and improves IPv6 IPsec. Fixes by Masahide NAKAMURA. Signed-off-by: Noriaki TAKAMIYA Signed-off-by: Masahide NAKAMURA Signed-off-by: David S. Miller

[IPv6]: Use rtnl registration interface

2007-04-26T05:27:13Z

Signed-off-by: Thomas Graf Signed-off-by: David S. Miller

[IPV6]: Fix routing round-robin locking.

2007-03-26T01:48:05Z

As per RFC2461, section 6.3.6, item #2, when no routers on the matching list are known to be reachable or probably reachable we do round robin on those available routes so that we make sure to probe as many of them as possible to detect when one becomes reachable faster. Each routing table has a rwlock protecting the tree and the linked list of routes at each leaf. The round robin code executes during lookup and thus with the rwlock taken as a reader. A small local spinlock tries to provide protection but this does not work at all for two reasons: 1) The round-robin list manipulation, as coded, goes like this (with read lock held): walk routes finding head and tail spin_lock(); rotate list using head and tail spin_unlock(); While one thread is rotating the list, another thread can end up with stale values of head and tail and then proceed to corrupt the list when it gets the lock. This ends up causing the OOPS in fib6_add() later onthat many people have been hitting. 2) All the other code paths that run with the rwlock held as a reader do not expect the list to change on them, they expect it to remain completely fixed while they hold the lock in that way. So, simply stated, it is impossible to implement this correctly using a manipulation of the list without violating the rwlock locking semantics. Reimplement using a per-fib6_node round-robin pointer. This way we don't need to manipulate the list at all, and since the round-robin pointer can only ever point to real existing entries we don't need to perform any locking on the changing of the round-robin pointer itself. We only need to reset the round-robin pointer to NULL when the entry it is pointing to is removed. The idea is from Thomas Graf and it is very similar to how this was implemented before the advanced router selection code when in. Signed-off-by: David S. Miller

[IPV6]: Convert ipv6 route to use the new dst_entry 'next' pointer

2007-02-11T07:20:40Z

This patch removes the next pointer from 'struct rt6_info.u' union, and renames u.next to u.dst.rt6_next. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller