[XFRM]: Fix wildcard as tunnel source

Hashing SAs by source address breaks templates with wildcards as tunnel
source since the source address used for hashing/lookup is still 0/0.
Move source address lookup to xfrm_tmpl_resolve_one() so we can use the
real address in the lookup.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 4d6dc627df9b..11e0b1d6bd47 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -222,6 +222,7 @@ struct xfrm_policy_afinfo {
         struct dst_ops          *dst_ops;
         void                    (*garbage_collect)(void);
         int                     (*dst_lookup)(struct xfrm_dst **dst, struct flowi *fl);
+        int                     (*get_saddr)(xfrm_address_t *saddr, xfrm_address_t *daddr);
         struct dst_entry        *(*find_bundle)(struct flowi *fl, struct xfrm_policy *policy);
         int                     (*bundle_create)(struct xfrm_policy *policy, 
                                                  struct xfrm_state **xfrm, 
@@ -631,6 +632,18 @@ secpath_reset(struct sk_buff *skb)
 }
 
 static inline int
+xfrm_addr_any(xfrm_address_t *addr, unsigned short family)
+{
+        switch (family) {
+        case AF_INET:
+                return addr->a4 == 0;
+        case AF_INET6:
+                return ipv6_addr_any((struct in6_addr *)&addr->a6);
+        }
+        return 0;
+}
+
+static inline int
 __xfrm4_state_addr_cmp(struct xfrm_tmpl *tmpl, struct xfrm_state *x)
 {
         return  (tmpl->saddr.a4 &&