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authorMasahide NAKAMURA <nakam@linux-ipv6.org>2006-08-23 17:56:04 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2006-09-22 15:06:35 -0700
commiteb2971b68a7d17a7d0fa2c7fc6fbc4bfe41cd694 (patch)
tree5f6e98ac376d0d2faa69e8a6644706a7312a1ff1 /net/ipv6/xfrm6_state.c
parent6c44e6b7ab500d7e3e3f406c83325671be51a752 (diff)
[XFRM] STATE: Search by address using source address list.
This is a support to search transformation states by its addresses by using source address list for Mobile IPv6 usage. To use it from user-space, it is also added a message type for source address as a xfrm state option. 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/ipv6/xfrm6_state.c')
-rw-r--r--net/ipv6/xfrm6_state.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c
index 2fb07850449..9c95b9d3e11 100644
--- a/net/ipv6/xfrm6_state.c
+++ b/net/ipv6/xfrm6_state.c
@@ -64,6 +64,26 @@ __xfrm6_init_tempsel(struct xfrm_state *x, struct flowi *fl,
}
static struct xfrm_state *
+__xfrm6_state_lookup_byaddr(xfrm_address_t *daddr, xfrm_address_t *saddr,
+ u8 proto)
+{
+ struct xfrm_state *x = NULL;
+ unsigned h;
+
+ h = __xfrm6_src_hash(saddr);
+ list_for_each_entry(x, xfrm6_state_afinfo.state_bysrc+h, bysrc) {
+ if (x->props.family == AF_INET6 &&
+ ipv6_addr_equal((struct in6_addr *)daddr, (struct in6_addr *)x->id.daddr.a6) &&
+ ipv6_addr_equal((struct in6_addr *)saddr, (struct in6_addr *)x->props.saddr.a6) &&
+ proto == x->id.proto) {
+ xfrm_state_hold(x);
+ return x;
+ }
+ }
+ return NULL;
+}
+
+static struct xfrm_state *
__xfrm6_state_lookup(xfrm_address_t *daddr, u32 spi, u8 proto)
{
unsigned h = __xfrm6_spi_hash(daddr, spi, proto);
@@ -140,6 +160,7 @@ static struct xfrm_state_afinfo xfrm6_state_afinfo = {
.family = AF_INET6,
.init_tempsel = __xfrm6_init_tempsel,
.state_lookup = __xfrm6_state_lookup,
+ .state_lookup_byaddr = __xfrm6_state_lookup_byaddr,
.find_acq = __xfrm6_find_acq,
};