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| author | Masahide NAKAMURA <nakam@linux-ipv6.org> | 2007-12-20 20:41:12 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-01-28 14:59:36 -0800 |
| commit | a1b051405bc16222d92c73b0c26d65b333a154ee (patch) | |
| tree | 2950e34bbb51838f8da3e1d03c8ee608d3b56f55 /net/xfrm | |
| parent | bd515c3e48ececd774eb3128e81b669dbbd32637 (diff) | |
| download | linux-a1b051405bc16222d92c73b0c26d65b333a154ee.tar.bz2 | |
[XFRM] IPv6: Fix dst/routing check at transformation.
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 <nakam@linux-ipv6.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_policy.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 8023a3c0dad5..521cb6e12561 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -1266,6 +1266,23 @@ static inline struct xfrm_dst *xfrm_alloc_dst(int family) return xdst; } +static inline int xfrm_init_path(struct xfrm_dst *path, struct dst_entry *dst, + int nfheader_len) +{ + struct xfrm_policy_afinfo *afinfo = + xfrm_policy_get_afinfo(dst->ops->family); + int err; + + if (!afinfo) + return -EINVAL; + + err = afinfo->init_path(path, dst, nfheader_len); + + xfrm_policy_put_afinfo(afinfo); + + return err; +} + static inline int xfrm_fill_dst(struct xfrm_dst *xdst, struct net_device *dev) { struct xfrm_policy_afinfo *afinfo = @@ -1298,6 +1315,7 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy, int i = 0; int err; int header_len = 0; + int nfheader_len = 0; int trailer_len = 0; int tos; int family = policy->selector.family; @@ -1352,6 +1370,8 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy, dst_prev = dst1; header_len += xfrm[i]->props.header_len; + if (xfrm[i]->type->flags & XFRM_TYPE_NON_FRAGMENT) + nfheader_len += xfrm[i]->props.header_len; trailer_len += xfrm[i]->props.trailer_len; } @@ -1366,6 +1386,7 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy, /* Copy neighbout for reachability confirmation */ dst0->neighbour = neigh_clone(dst->neighbour); + xfrm_init_path((struct xfrm_dst *)dst0, dst, nfheader_len); xfrm_init_pmtu(dst_prev); for (dst_prev = dst0; dst_prev != dst; dst_prev = dst_prev->child) { |