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pkt_sched: Add multiqueue scheduler support

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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>
This commit is contained in:
Alexander Duyck
2008-09-12 16:29:34 -07:00
committed by David S. Miller
parent 78d15e8275
commit 92651940ab
5 changed files with 530 additions and 1 deletions
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7
include/linux/pkt_sched.h
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@ -123,6 +123,13 @@ struct tc_prio_qopt
__u8 priomap[TC_PRIO_MAX+1]; /* Map: logical priority -> PRIO band */
};
/* MULTIQ section */
struct tc_multiq_qopt {
__u16 bands; /* Number of bands */
__u16 max_bands; /* Maximum number of queues */
};
/* TBF section */
struct tc_tbf_qopt