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authorMasahide NAKAMURA <nakam@linux-ipv6.org>2006-08-23 18:10:33 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 15:06:41 -0700
commit99505a843673faeae962a8cde128c7c034ba6b5e (patch)
treef12a7409b5981881e56fcf5ca973de0d5d6001bd /net
parent9e51fd371a022318c5b64b831c43026e89bc4f75 (diff)
[XFRM] STATE: Add a hook to obtain local/remote outbound address.
Outbound transformation replaces both source and destination address with state's end-point addresses at the same time when IPsec tunnel mode. It is also required to change them for Mobile IPv6 route optimization, but we should care about the following differences: - changing result is not end-point but care-of address - either source or destination is replaced for each state This hook is a common platform to change outbound address. Based on MIPL2 kernel patch. Signed-off-by: Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/xfrm6_policy.c20
1 files changed, 18 insertions, 2 deletions
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 81355bb50328..9328fc88708a 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -59,6 +59,22 @@ __xfrm6_find_bundle(struct flowi *fl, struct xfrm_policy *policy)
return dst;
}
+static inline struct in6_addr*
+__xfrm6_bundle_addr_remote(struct xfrm_state *x, struct in6_addr *addr)
+{
+ return (x->type->remote_addr) ?
+ (struct in6_addr*)x->type->remote_addr(x, (xfrm_address_t *)addr) :
+ (struct in6_addr*)&x->id.daddr;
+}
+
+static inline struct in6_addr*
+__xfrm6_bundle_addr_local(struct xfrm_state *x, struct in6_addr *addr)
+{
+ return (x->type->local_addr) ?
+ (struct in6_addr*)x->type->local_addr(x, (xfrm_address_t *)addr) :
+ (struct in6_addr*)&x->props.saddr;
+}
+
/* Allocate chain of dst_entry's, attach known xfrm's, calculate
* all the metrics... Shortly, bundle a bundle.
*/
@@ -115,8 +131,8 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int
dst1->next = dst_prev;
dst_prev = dst1;
if (xfrm[i]->props.mode != XFRM_MODE_TRANSPORT) {
- remote = (struct in6_addr*)&xfrm[i]->id.daddr;
- local = (struct in6_addr*)&xfrm[i]->props.saddr;
+ remote = __xfrm6_bundle_addr_remote(xfrm[i], remote);
+ local = __xfrm6_bundle_addr_local(xfrm[i], local);
tunnel = 1;
}
header_len += xfrm[i]->props.header_len;