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taprio: Use taprio_reset_tc() to reset Traffic Classes configuration

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[ Upstream commit 7c16680a08ee1e444a67d232c679ccf5b30fad16 ]

When destroying the current taprio instance, which can happen when the
creation of one fails, we should reset the traffic class configuration
back to the default state.

netdev_reset_tc() is a better way because in addition to setting the
number of traffic classes to zero, it also resets the priority to
traffic classes mapping to the default value.

Fixes: 5a781ccbd19e ("tc: Add support for configuring the taprio scheduler")
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vinicius Costa Gomes 2020-02-06 13:46:09 -08:00 committed by Greg Kroah-Hartman
parent ee6adcf2c3
commit a5b959885c
1 changed files with 1 additions and 1 deletions
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2
net/sched/sch_taprio.c
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@ -1588,7 +1588,7 @@ static void taprio_destroy(struct Qdisc *sch)
}
q->qdiscs = NULL;
netdev_set_num_tc(dev, 0);
netdev_reset_tc(dev);
if (q->oper_sched)
call_rcu(&q->oper_sched->rcu, taprio_free_sched_cb);