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net: sched: sch_api: set an error msg when qdisc_alloc_handle() fails 

This patch sets an error message in extack when the number of qdisc
handles exceeds the maximum. Also the error-code ENOSPC is more
appropriate than ENOMEM in this situation.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reported-by: Li Shuang <shuali@redhat.com>
Reviewed-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivan Vecera 2019-02-15 11:23:25 +01:00 committed by David S. Miller
parent 5642563883
commit aaeb1dea51
1 changed files with 4 additions and 2 deletions
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6
net/sched/sch_api.c
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@ -1201,9 +1201,11 @@ static struct Qdisc *qdisc_create(struct net_device *dev,
} else {
if (handle == 0) {
handle = qdisc_alloc_handle(dev);
err = -ENOMEM;
if (handle == 0)
if (handle == 0) {
NL_SET_ERR_MSG(extack, "Maximum number of qdisc handles was exceeded");
err = -ENOSPC;
goto err_out3;
}
}
if (!netif_is_multiqueue(dev))
sch->flags |= TCQ_F_ONETXQUEUE;