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?
