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net: sched: avoid duplicates in classes dump 

This is a follow up of commit ea32746953 ("net: sched: avoid
duplicates in qdisc dump") which has fixed the issue only for the qdisc
dump.

The duplicate printing also occurs when dumping the classes via
  tc class show dev eth0

Fixes: 59cc1f61f0 ("net: sched: convert qdisc linked list to hashtable")
Signed-off-by: Maximilian Heyne <mheyne@amazon.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maximilian Heyne 2021-03-04 14:43:17 +00:00 committed by David S. Miller
parent 6c59cff38e
commit bfc2560563
1 changed files with 4 additions and 4 deletions
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8
net/sched/sch_api.c
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@ -2168,7 +2168,7 @@ static int tc_dump_tclass_qdisc(struct Qdisc *q, struct sk_buff *skb,
static int tc_dump_tclass_root(struct Qdisc *root, struct sk_buff *skb,
struct tcmsg *tcm, struct netlink_callback *cb,
int *t_p, int s_t)
int *t_p, int s_t, bool recur)
{
struct Qdisc *q;
int b;
@ -2179,7 +2179,7 @@ static int tc_dump_tclass_root(struct Qdisc *root, struct sk_buff *skb,
if (tc_dump_tclass_qdisc(root, skb, tcm, cb, t_p, s_t) < 0)
return -1;
if (!qdisc_dev(root))
if (!qdisc_dev(root) || !recur)
return 0;
if (tcm->tcm_parent) {
@ -2214,13 +2214,13 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
s_t = cb->args[0];
t = 0;
if (tc_dump_tclass_root(dev->qdisc, skb, tcm, cb, &t, s_t) < 0)
if (tc_dump_tclass_root(dev->qdisc, skb, tcm, cb, &t, s_t, true) < 0)
goto done;
dev_queue = dev_ingress_queue(dev);
if (dev_queue &&
tc_dump_tclass_root(dev_queue->qdisc_sleeping, skb, tcm, cb,
&t, s_t) < 0)
&t, s_t, false) < 0)
goto done;
done: