ipv4: Remember FIB alias list head and table in lookup results.

This will be used later to implement fib_select_default() in a
completely generic manner, instead of the current situation where the
default route is re-looked up in the TRIE/HASH table and then the
available aliases are analyzed.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 2 deletions

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 48e93a560077..1bf6fb906cfc 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -889,8 +889,9 @@ failure:
 }
 
 /* Note! fib_semantic_match intentionally uses  RCU list functions. */
-int fib_semantic_match(struct list_head *head, const struct flowi *flp,
-                       struct fib_result *res, int prefixlen, int fib_flags)
+int fib_semantic_match(struct fib_table *tb, struct list_head *head,
+                       const struct flowi *flp, struct fib_result *res,
+                       int prefixlen, int fib_flags)
 {
         struct fib_alias *fa;
         int nh_sel = 0;
@@ -954,6 +955,8 @@ out_fill_res:
         res->type = fa->fa_type;
         res->scope = fa->fa_scope;
         res->fi = fa->fa_info;
+        res->table = tb;
+        res->fa_head = head;
         if (!(fib_flags & FIB_LOOKUP_NOREF))
                 atomic_inc(&res->fi->fib_clntref);
         return 0;