Yuanhan Liu 1d41d77cf8 vhost: optimize dequeue for small packets
A virtio driver normally uses at least 2 desc buffers for Tx: the
first for storing the header, and the others for storing the data.

Therefore, we could fetch the first data desc buf before the main
loop, and do the copy first before the check of "are we done yet?".
This could save one check for small packets that just have one data
desc buffer and need one mbuf to store it.

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Acked-by: Huawei Xie <huawei.xie@intel.com>
Tested-by: Rich Lane <rich.lane@bigswitch.com>
2016-06-22 09:47:12 +02:00
2016-06-22 09:47:12 +02:00
2016-06-22 09:47:12 +02:00
2016-04-11 23:56:34 +02:00
2013-03-07 10:57:42 +01:00
2015-05-22 15:51:38 +02:00
2013-07-25 14:43:06 +02:00
2014-06-11 00:29:34 +02:00
2015-12-13 22:06:58 +01:00

DPDK is a set of libraries and drivers for fast packet processing.
It supports many processor architectures and both FreeBSD and Linux.

The DPDK uses the Open Source BSD license for the core libraries and
drivers. The kernel components are GPLv2 licensed.

Please check the doc directory for release notes,
API documentation, and sample application information.

For questions and usage discussions, subscribe to: users@dpdk.org
Report bugs and issues to the development mailing list: dev@dpdk.org
Description
No description provided
Readme 128 MiB
Languages
C 99.1%
Meson 0.5%
Python 0.2%
Shell 0.1%