This patch documents how DPDK app should handle the event of switch quit-restart to resume its network without an app-level restart.
Signed-off-by: Xiao Wang <xiao.w.w...@intel.com> --- doc/guides/nics/fm10k.rst | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/doc/guides/nics/fm10k.rst b/doc/guides/nics/fm10k.rst index 7fc4862..51b8326 100644 --- a/doc/guides/nics/fm10k.rst +++ b/doc/guides/nics/fm10k.rst @@ -161,6 +161,16 @@ FM10000 PMD driver. The switch driver can be acquired from Intel support. Only Testpoint is validated with DPDK, the latest version that has been validated with DPDK is 4.1.6. +Support Switch Restart +~~~~~~~~~~~~~~~~~~~~~~ + +For fm10k multi host based design, DPDK app running in VM or host needs to +get aware of the switch's state because switch may undergo a quit-restart. +When switch goes down, DPDK app receives a LSC event indicating link status +turns down, and app should stop the worker threads that are polling on the +Rx/Tx queues. When switch gets up, a LSC event indicating LINK_UP is sent to +the app, then app can restart fm10k port to resume its network processing. + CRC striping ~~~~~~~~~~~~ -- 1.8.3.1
