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| author | stephen hemminger <stephen@networkplumber.org> | 2013-10-06 15:16:49 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-11 17:30:38 -0400 |
| commit | ff704050f2fc0f3382b5a70bba56a51a3feca79d (patch) | |
| tree | d4ba003c5b40b929ab08a50d720a9df2e69be58a | |
| parent | 638a52b801e40ed276ceb69b73579ad99365361a (diff) | |
| download | linux-exynos-ff704050f2fc0f3382b5a70bba56a51a3feca79d.tar.gz linux-exynos-ff704050f2fc0f3382b5a70bba56a51a3feca79d.tar.bz2 linux-exynos-ff704050f2fc0f3382b5a70bba56a51a3feca79d.zip | |
netem: free skb's in tree on reset
Netem can leak memory because packets get stored in red-black
tree and it is not cleared on reset.
Reported by: Сергеев Сергей <adron@yapic.net>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sched/sch_netem.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c index 6b75b6733e8e..b87e83d07478 100644 --- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -358,6 +358,21 @@ static psched_time_t packet_len_2_sched_time(unsigned int len, struct netem_sche return PSCHED_NS2TICKS(ticks); } +static void tfifo_reset(struct Qdisc *sch) +{ + struct netem_sched_data *q = qdisc_priv(sch); + struct rb_node *p; + + while ((p = rb_first(&q->t_root))) { + struct sk_buff *skb = netem_rb_to_skb(p); + + rb_erase(p, &q->t_root); + skb->next = NULL; + skb->prev = NULL; + kfree_skb(skb); + } +} + static void tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch) { struct netem_sched_data *q = qdisc_priv(sch); @@ -610,6 +625,7 @@ static void netem_reset(struct Qdisc *sch) struct netem_sched_data *q = qdisc_priv(sch); qdisc_reset_queue(sch); + tfifo_reset(sch); if (q->qdisc) qdisc_reset(q->qdisc); qdisc_watchdog_cancel(&q->watchdog); |