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net_sched: sch_fq: defer skb freeing

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Both fq_change() and fq_reset() can use rtnl_kfree_skbs()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2016-06-13 20:21:53 -07:00 committed by David S. Miller
parent b3d7e2b29b
commit e14ffdfdd6
1 changed files with 13 additions and 6 deletions
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19
net/sched/sch_fq.c
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@ -514,17 +514,25 @@ out:
return skb;
}
static void fq_flow_purge(struct fq_flow *flow)
{
rtnl_kfree_skbs(flow->head, flow->tail);
flow->head = NULL;
flow->qlen = 0;
}
static void fq_reset(struct Qdisc *sch)
{
struct fq_sched_data *q = qdisc_priv(sch);
struct rb_root *root;
struct sk_buff *skb;
struct rb_node *p;
struct fq_flow *f;
unsigned int idx;
while ((skb = fq_dequeue_head(sch, &q->internal)) != NULL)
kfree_skb(skb);
sch->q.qlen = 0;
sch->qstats.backlog = 0;
fq_flow_purge(&q->internal);
if (!q->fq_root)
return;
@ -535,8 +543,7 @@ static void fq_reset(struct Qdisc *sch)
f = container_of(p, struct fq_flow, fq_node);
rb_erase(p, root);
while ((skb = fq_dequeue_head(sch, f)) != NULL)
kfree_skb(skb);
fq_flow_purge(f);
kmem_cache_free(fq_flow_cachep, f);
}
@ -737,7 +744,7 @@ static int fq_change(struct Qdisc *sch, struct nlattr *opt)
if (!skb)
break;
drop_len += qdisc_pkt_len(skb);
kfree_skb(skb);
rtnl_kfree_skbs(skb, skb);
drop_count++;
}
qdisc_tree_reduce_backlog(sch, drop_count, drop_len);