netfilter: nft_meta: cancel register tracking after meta update

[linux-2.6-microblaze.git] / net / bridge / netfilter / nft_meta_bridge.c

diff --git a/net/bridge/netfilter/nft_meta_bridge.c b/net/bridge/netfilter/nft_meta_bridge.c
index 97805ec..c1ef9cc 100644 (file)
--- a/net/bridge/netfilter/nft_meta_bridge.c
+++ b/net/bridge/netfilter/nft_meta_bridge.c
@@ -100,6 +100,25 @@ static const struct nft_expr_ops nft_meta_bridge_get_ops = {
        .dump           = nft_meta_get_dump,
 };
 
+static bool nft_meta_bridge_set_reduce(struct nft_regs_track *track,
+                                      const struct nft_expr *expr)
+{
+       int i;
+
+       for (i = 0; i < NFT_REG32_NUM; i++) {
+               if (!track->regs[i].selector)
+                       continue;
+
+               if (track->regs[i].selector->ops != &nft_meta_bridge_get_ops)
+                       continue;
+
+               track->regs[i].selector = NULL;
+               track->regs[i].bitwise = NULL;
+       }
+
+       return false;
+}
+
 static const struct nft_expr_ops nft_meta_bridge_set_ops = {
        .type           = &nft_meta_bridge_type,
        .size           = NFT_EXPR_SIZE(sizeof(struct nft_meta)),
@@ -107,6 +126,7 @@ static const struct nft_expr_ops nft_meta_bridge_set_ops = {
        .init           = nft_meta_set_init,
        .destroy        = nft_meta_set_destroy,
        .dump           = nft_meta_set_dump,
+       .reduce         = nft_meta_bridge_set_reduce,
        .validate       = nft_meta_set_validate,
 };