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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-08-24 12:18:09 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-23 00:08:42 +0200 |
| commit | 9d4a706d852411154d0c91b9ffb3bec68b94b25c (patch) | |
| tree | 1613607168baa8b654c300895cd7d0ffb6f18581 /include/net/xfrm.h | |
| parent | [XFRM]: Dynamic xfrm_state hash table sizing. (diff) | |
| download | linux-9d4a706d852411154d0c91b9ffb3bec68b94b25c.tar.xz linux-9d4a706d852411154d0c91b9ffb3bec68b94b25c.zip | |
[XFRM]: Add generation count to xfrm_state and xfrm_dst.
Each xfrm_state inserted gets a new generation counter
value. When a bundle is created, the xfrm_dst objects
get the current generation counter of the xfrm_state
they will attach to at dst->xfrm.
xfrm_bundle_ok() will return false if it sees an
xfrm_dst with a generation count different from the
generation count of the xfrm_state that dst points to.
This provides a facility by which to passively and
cheaply invalidate cached IPSEC routes during SA
database changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/xfrm.h')
| -rw-r--r-- | include/net/xfrm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h index 3405e5d9d51c..fd4a300b5baf 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -104,6 +104,8 @@ struct xfrm_state struct xfrm_id id; struct xfrm_selector sel; + u32 genid; + /* Key manger bits */ struct { u8 state; @@ -590,6 +592,7 @@ struct xfrm_dst struct rt6_info rt6; } u; struct dst_entry *route; + u32 genid; u32 route_mtu_cached; u32 child_mtu_cached; u32 route_cookie; |