pkt_sched: Add multiqueue scheduler support

This patch is intended to add a qdisc to support the new tx multiqueue
architecture by providing a band for each hardware queue.  By doing
this it is possible to support a different qdisc per physical hardware
queue.

This qdisc uses the skb->queue_mapping to select which band to place
the traffic onto.  It then uses a round robin w/ a check to see if the
subqueue is stopped to determine which band to dequeue the packet from.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 9437b27ff84d..efaa7a75e7f3 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -106,6 +106,15 @@ config NET_SCH_PRIO
           To compile this code as a module, choose M here: the
           module will be called sch_prio.
 
+config NET_SCH_MULTIQ
+        tristate "Hardware Multiqueue-aware Multi Band Queuing (MULTIQ)"
+        ---help---
+          Say Y here if you want to use an n-band queue packet scheduler
+          to support devices that have multiple hardware transmit queues.
+
+          To compile this code as a module, choose M here: the
+          module will be called sch_multiq.
+
 config NET_SCH_RED
         tristate "Random Early Detection (RED)"
         ---help---