diff options
Diffstat (limited to 'Documentation/networking/multiqueue.txt')
| -rw-r--r-- | Documentation/networking/multiqueue.txt | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/Documentation/networking/multiqueue.txt b/Documentation/networking/multiqueue.txt index 8c2b06b77f61..4caa0e314cc2 100644 --- a/Documentation/networking/multiqueue.txt +++ b/Documentation/networking/multiqueue.txt | |||
| @@ -29,15 +29,15 @@ Section 2: Qdisc support for multiqueue devices | |||
| 29 | 29 | ||
| 30 | ----------------------------------------------- | 30 | ----------------------------------------------- |
| 31 | 31 | ||
| 32 | Currently two qdiscs support multiqueue devices. The first is the default | 32 | Currently two qdiscs are optimized for multiqueue devices. The first is the |
| 33 | pfifo_fast qdisc. This qdisc supports one qdisc per hardware queue. A new | 33 | default pfifo_fast qdisc. This qdisc supports one qdisc per hardware queue. |
| 34 | round-robin qdisc, sch_multiq also supports multiple hardware queues. The | 34 | A new round-robin qdisc, sch_multiq also supports multiple hardware queues. The |
| 35 | qdisc is responsible for classifying the skb's and then directing the skb's to | 35 | qdisc is responsible for classifying the skb's and then directing the skb's to |
| 36 | bands and queues based on the value in skb->queue_mapping. Use this field in | 36 | bands and queues based on the value in skb->queue_mapping. Use this field in |
| 37 | the base driver to determine which queue to send the skb to. | 37 | the base driver to determine which queue to send the skb to. |
| 38 | 38 | ||
| 39 | sch_multiq has been added for hardware that wishes to avoid unnecessary | 39 | sch_multiq has been added for hardware that wishes to avoid head-of-line |
| 40 | requeuing. It will cycle though the bands and verify that the hardware queue | 40 | blocking. It will cycle though the bands and verify that the hardware queue |
| 41 | associated with the band is not stopped prior to dequeuing a packet. | 41 | associated with the band is not stopped prior to dequeuing a packet. |
| 42 | 42 | ||
| 43 | On qdisc load, the number of bands is based on the number of queues on the | 43 | On qdisc load, the number of bands is based on the number of queues on the |
| @@ -63,8 +63,8 @@ band 1 => queue 1 | |||
| 63 | band 2 => queue 2 | 63 | band 2 => queue 2 |
| 64 | band 3 => queue 3 | 64 | band 3 => queue 3 |
| 65 | 65 | ||
| 66 | Traffic will begin flowing through each queue if your base device has either | 66 | Traffic will begin flowing through each queue based on either the simple_tx_hash |
| 67 | the default simple_tx_hash or a custom netdev->select_queue() defined. | 67 | function or based on netdev->select_queue() if you have it defined. |
| 68 | 68 | ||
| 69 | The behavior of tc filters remains the same. However a new tc action, | 69 | The behavior of tc filters remains the same. However a new tc action, |
| 70 | skbedit, has been added. Assuming you wanted to route all traffic to a | 70 | skbedit, has been added. Assuming you wanted to route all traffic to a |