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Commit ba03137f authored by Felix Fietkau's avatar Felix Fietkau Committed by Pablo Neira Ayuso
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netfilter: nf_flow_table: in flow_offload_lookup, skip entries being deleted 



Preparation for sending flows back to the slow path

Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent 59c466dd

net/netfilter/nf_flow_table_core.c

+15 −2
Original line number Diff line number Diff line
@@ -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,

	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);