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net_sched: act: refuse to remove bound action outside

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When an action is bonnd to a filter, there is no point to
remove it outside. Currently we just silently decrease the refcnt,
we should reject this explicitly with EPERM.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong
2014-02-11 17:07:34 -08:00
committed by David S. Miller
parent 4f1e9d8949
commit 55334a5db5
2 changed files with 21 additions and 7 deletions
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2
include/net/act_api.h
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@@ -109,7 +109,7 @@ void tcf_hash_insert(struct tc_action *a);
int tcf_register_action(struct tc_action_ops *a, unsigned int mask);
int tcf_unregister_action(struct tc_action_ops *a);
void tcf_action_destroy(struct list_head *actions, int bind);
int tcf_action_destroy(struct list_head *actions, int bind);
int tcf_action_exec(struct sk_buff *skb, const struct list_head *actions,
struct tcf_result *res);
int tcf_action_init(struct net *net, struct nlattr *nla,