diff options
Diffstat (limited to 'target/linux/generic/backport-4.19/362-v4.18-netfilter-nf_flow_table-in-flow_offload_lookup-skip-.patch')
| -rw-r--r-- | target/linux/generic/backport-4.19/362-v4.18-netfilter-nf_flow_table-in-flow_offload_lookup-skip-.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/target/linux/generic/backport-4.19/362-v4.18-netfilter-nf_flow_table-in-flow_offload_lookup-skip-.patch b/target/linux/generic/backport-4.19/362-v4.18-netfilter-nf_flow_table-in-flow_offload_lookup-skip-.patch new file mode 100644 index 0000000000..d14ac97a59 --- /dev/null +++ b/target/linux/generic/backport-4.19/362-v4.18-netfilter-nf_flow_table-in-flow_offload_lookup-skip-.patch @@ -0,0 +1,36 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Sun, 25 Feb 2018 15:39:56 +0100 +Subject: [PATCH] netfilter: nf_flow_table: in flow_offload_lookup, skip + entries being deleted + +Preparation for sending flows back to the slow path + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/net/netfilter/nf_flow_table_core.c ++++ b/net/netfilter/nf_flow_table_core.c +@@ -184,8 +184,21 @@ struct flow_offload_tuple_rhash * + flow_offload_lookup(struct nf_flowtable *flow_table, + struct flow_offload_tuple *tuple) + { +- return rhashtable_lookup_fast(&flow_table->rhashtable, tuple, +- nf_flow_offload_rhash_params); ++ struct flow_offload_tuple_rhash *tuplehash; ++ struct flow_offload *flow; ++ int dir; ++ ++ tuplehash = rhashtable_lookup_fast(&flow_table->rhashtable, tuple, ++ nf_flow_offload_rhash_params); ++ if (!tuplehash) ++ return NULL; ++ ++ dir = tuplehash->tuple.dir; ++ flow = container_of(tuplehash, struct flow_offload, tuplehash[dir]); ++ if (flow->flags & (FLOW_OFFLOAD_DYING | FLOW_OFFLOAD_TEARDOWN)) ++ return NULL; ++ ++ return tuplehash; + } + EXPORT_SYMBOL_GPL(flow_offload_lookup); + |