tree 9760eae6030cbdb60ee41d79506be33941260488
parent 20f8c874789a80fbc1ab44451274bbde52bfa4b8
author Vinicius Costa Gomes <vinicius.gomes@intel.com> 1598377444 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1599913135 +0200

taprio: Fix using wrong queues in gate mask

[ Upstream commit 09e31cf0c528dac3358a081dc4e773d1b3de1bc9 ]

Since commit 9c66d1564676 ("taprio: Add support for hardware
offloading") there's a bit of inconsistency when offloading schedules
to the hardware:

In software mode, the gate masks are specified in terms of traffic
classes, so if say "sched-entry S 03 20000", it means that the traffic
classes 0 and 1 are open for 20us; when taprio is offloaded to
hardware, the gate masks are specified in terms of hardware queues.

The idea here is to fix hardware offloading, so schedules in hardware
and software mode have the same behavior. What's needed to do is to
map traffic classes to queues when applying the offload to the driver.

Fixes: 9c66d1564676 ("taprio: Add support for hardware offloading")
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>