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authorMasahide NAKAMURA <nakam@linux-ipv6.org>2007-12-20 20:41:12 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:59:36 -0800
commita1b051405bc16222d92c73b0c26d65b333a154ee (patch)
tree2950e34bbb51838f8da3e1d03c8ee608d3b56f55 /net/xfrm
parentbd515c3e48ececd774eb3128e81b669dbbd32637 (diff)
[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.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 8023a3c0dad..521cb6e1256 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) {