path: root/net/sched/sch_api.c
diff options
authorEric Dumazet <edumazet@google.com>2017-05-10 21:59:28 -0700
committerDavid S. Miller <davem@davemloft.net>2017-05-11 21:37:40 -0400
commitcb395b2010879a8461aa1b1c37025769708c32cf (patch)
tree6f2fbea893bf9e440268a336fa153b066166993d /net/sched/sch_api.c
parenttcp: avoid fragmenting peculiar skbs in SACK (diff)
net: sched: optimize class dumps
In commit 59cc1f61f09c ("net: sched: convert qdisc linked list to hashtable") we missed the opportunity to considerably speed up tc_dump_tclass_root() if a qdisc handle is provided by user. Instead of iterating all the qdiscs, use qdisc_match_from_root() to directly get the one we look for. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Cong Wang <xiyou.wangcong@gmail.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
1 files changed, 6 insertions, 0 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index bbe57d57b67f..e88342fde1bc 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -1831,6 +1831,12 @@ static int tc_dump_tclass_root(struct Qdisc *root, struct sk_buff *skb,
if (!qdisc_dev(root))
return 0;
+ if (tcm->tcm_parent) {
+ q = qdisc_match_from_root(root, TC_H_MAJ(tcm->tcm_parent));
+ if (q && tc_dump_tclass_qdisc(q, skb, tcm, cb, t_p, s_t) < 0)
+ return -1;
+ return 0;
+ }
hash_for_each(qdisc_dev(root)->qdisc_hash, b, q, hash) {
if (tc_dump_tclass_qdisc(q, skb, tcm, cb, t_p, s_t) < 0)
return -1;