[XFRM] STATE: Add source address list.

Support source address based searching.
Mobile IPv6 will use it.
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>

1 files changed, 26 insertions, 0 deletions

diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index aa3be68041be..88145e3348d0 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -95,6 +95,7 @@ struct xfrm_state
 {
         /* Note: bydst is re-used during gc */
         struct list_head        bydst;
+        struct list_head        bysrc;
         struct list_head        byspi;
 
         atomic_t                refcnt;
@@ -236,6 +237,7 @@ extern int __xfrm_state_delete(struct xfrm_state *x);
 struct xfrm_state_afinfo {
         unsigned short          family;
         struct list_head        *state_bydst;
+        struct list_head        *state_bysrc;
         struct list_head        *state_byspi;
         int                     (*init_flags)(struct xfrm_state *x);
         void                    (*init_tempsel)(struct xfrm_state *x, struct flowi *fl,
@@ -421,6 +423,30 @@ unsigned xfrm_dst_hash(xfrm_address_t *addr, unsigned short family)
 }
 
 static __inline__
+unsigned __xfrm4_src_hash(xfrm_address_t *addr)
+{
+        return __xfrm4_dst_hash(addr);
+}
+
+static __inline__
+unsigned __xfrm6_src_hash(xfrm_address_t *addr)
+{
+        return __xfrm6_dst_hash(addr);
+}
+
+static __inline__
+unsigned xfrm_src_hash(xfrm_address_t *addr, unsigned short family)
+{
+        switch (family) {
+        case AF_INET:
+                return __xfrm4_src_hash(addr);
+        case AF_INET6:
+                return __xfrm6_src_hash(addr);
+        }
+        return 0;
+}
+
+static __inline__
 unsigned __xfrm4_spi_hash(xfrm_address_t *addr, u32 spi, u8 proto)
 {
         unsigned h;