Hi, Ferruh 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...@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 >> unconditionally. >> 2. add conditional compilation directive to avoid breaking build with >> kernel which doesn't support need_wakeup feature yet. >> >> Note: >> >> 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 +++++++++++++++++++------- > >Hi Xiaolong, > >Can you please document this feature in af_xdp documentation? And if there >specific kernel version requirement for this, can you please add this >information too?
Got it, will do in next version. Thanks, Xiaolong >
