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net_sched: remove useless NULL to tp->root

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There is no need to NULL tp->root in ->destroy(), since tp is
going to be freed very soon, and existing readers are still
safe to read them.

For cls_route, we always init its tp->root, so it can't be NULL,
we can drop more useless code.

Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.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
2017-04-19 14:21:22 -07:00
committed by David S. Miller
parent 763dbf6328
commit 4392053879
3 changed files with 0 additions and 20 deletions
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4
net/sched/cls_rsvp.h
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@@ -152,8 +152,6 @@ static int rsvp_classify(struct sk_buff *skb, const struct tcf_proto *tp,
return -1;
nhptr = ip_hdr(skb);
#endif
if (unlikely(!head))
return -1;
restart:
#if RSVP_DST_LEN == 4
@@ -310,8 +308,6 @@ static void rsvp_destroy(struct tcf_proto *tp)
if (data == NULL)
return;
RCU_INIT_POINTER(tp->root, NULL);
for (h1 = 0; h1 < 256; h1++) {
struct rsvp_session *s;