Jason Wang 1576d98605 tun: switch to use skb array for tx ...

We used to queue tx packets in sk_receive_queue, this is less
efficient since it requires spinlocks to synchronize between producer
and consumer.

This patch tries to address this by:

- switch from sk_receive_queue to a skb_array, and resize it when
  tx_queue_len was changed.
- introduce a new proto_ops peek_len which was used for peeking the
  skb length.
- implement a tun version of peek_len for vhost_net to use and convert
  vhost_net to use peek_len if possible.

Pktgen test shows about 15.3% improvement on guest receiving pps for small
buffers:

Before: ~1300000pps
After : ~1500000pps

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2016-07-01 05:32:17 -04:00

..

Kconfig

vhost: cross-endian support for legacy devices

2015-06-01 15:48:55 +02:00

Makefile

vhost: Make vhost a separate module

2013-07-07 17:33:44 +03:00

net.c

tun: switch to use skb array for tx

2016-07-01 05:32:17 -04:00

scsi.c

target: make close_session optional

2016-05-10 01:19:26 -07:00

test.c

vhost: rename vhost_init_used()

2016-03-02 17:02:04 +02:00

test.h

vhost test module

2010-12-09 16:00:21 +02:00

vhost.c

vhost_net: basic polling support

2016-03-11 02:18:53 +02:00

vhost.h

vhost_net: basic polling support

2016-03-11 02:18:53 +02:00

vringh.c

vringh: update for virtio 1.0 APIs

2014-12-15 23:49:28 +02:00