[dpdk-dev] [PATCH v3] net/af_xdp: support need wakeup feature
xiaolong.ye at intel.com
Fri Jun 28 10:35:39 CEST 2019
On 06/27, Ferruh Yigit wrote:
>On 6/21/2019 2:19 PM, Xiaolong Ye wrote:
>> This patch enables need_wakeup flag for Tx and fill rings, when this flag
>> is set by the driver, it means that the userspace application has to
>> explicitly wake up the kernel Rx or kernel Tx processing by issuing a
>> syscall. Poll() can wake up both and sendto() or its alternatives will wake
>> up Tx processing only.
>> This feature is to provide efficient support for case that application and
>> driver executing on the same core.
>> Signed-off-by: Xiaolong Ye <xiaolong.ye at intel.com>
>> v3 changes:
>> 1. add introduction in 19.08 release note
>> v2 changes:
>> 1. remove need_wakeup devarg to make need_wakeup feature enabled
>> 2. add conditional compilation directive to avoid breaking build with
>> kernel which doesn't support need_wakeup feature yet.
>> Original busy poll feature has morphed into need_wakeup flag in
>> kernel side, the main purpose is the same, that is to support both
>> application and driver executing on the same core efficiently.
>> doc/guides/rel_notes/release_19_08.rst | 2 ++
>> drivers/net/af_xdp/rte_eth_af_xdp.c | 41 +++++++++++++++++++-------
>Can you please document this feature in af_xdp documentation? And if there
>specific kernel version requirement for this, can you please add this
Got it, will do in next version.
More information about the dev