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net_sched: properly handle failure case of tcf_exts_init()

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After commit 22dc13c837 ("net_sched: convert tcf_exts from list to pointer array")
we do dynamic allocation in tcf_exts_init(), therefore we need
to handle the ENOMEM case properly.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong 2016-08-19 12:36:54 -07:00 • committed by David S. Miller
parent c1346a7e70
commit b9a24bb76b
11 changed files with 182 additions and 75 deletions
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6
include/net/pkt_cls.h
View file

@ -69,17 +69,19 @@ struct tcf_exts {
int police;
};
static inline void tcf_exts_init(struct tcf_exts *exts, int action, int police)
static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police)
{
#ifdef CONFIG_NET_CLS_ACT
exts->type = 0;
exts->nr_actions = 0;
exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *),
GFP_KERNEL);
WARN_ON(!exts->actions); /* TODO: propagate the error to callers */
if (!exts->actions)
return -ENOMEM;
#endif
exts->action = action;
exts->police = police;
return 0;
}
/**