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net_sched: only create filter chains for new filters/actions

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tcf_chain_get() always creates a new filter chain if not found
in existing ones. This is totally unnecessary when we get or
delete filters, new chain should be only created for new filters
(or new actions).

Fixes: 5bc1701881 ("net: sched: introduce multichain support for filters")
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong
2017-05-23 09:42:37 -07:00
committed by David S. Miller
parent ee538dcea2
commit 367a8ce896
3 changed files with 12 additions and 6 deletions
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2
net/sched/act_api.c
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@@ -34,7 +34,7 @@ static int tcf_action_goto_chain_init(struct tc_action *a, struct tcf_proto *tp)
if (!tp)
return -EINVAL;
a->goto_chain = tcf_chain_get(tp->chain->block, chain_index);
a->goto_chain = tcf_chain_get(tp->chain->block, chain_index, true);
if (!a->goto_chain)
return -ENOMEM;
return 0;