netfilter 04/09: x_tables: fix match/target revision lookup

Commit 55b69e91 (netfilter: implement NFPROTO_UNSPEC as a wildcard
for extensions) broke revision probing for matches and targets that
are registered with NFPROTO_UNSPEC.

Fix by continuing the search on the NFPROTO_UNSPEC list if nothing
is found on the af-specific lists.

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

1 files changed, 8 insertions, 0 deletions

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 89837a4eef76..bfbf521f6ea5 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -273,6 +273,10 @@ static int match_revfn(u8 af, const char *name, u8 revision, int *bestp)
                                 have_rev = 1;
                 }
         }
+
+        if (af != NFPROTO_UNSPEC && !have_rev)
+                return match_revfn(NFPROTO_UNSPEC, name, revision, bestp);
+
         return have_rev;
 }
 
@@ -289,6 +293,10 @@ static int target_revfn(u8 af, const char *name, u8 revision, int *bestp)
                                 have_rev = 1;
                 }
         }
+
+        if (af != NFPROTO_UNSPEC && !have_rev)
+                return target_revfn(NFPROTO_UNSPEC, name, revision, bestp);
+
         return have_rev;
 }