On 4/22/2023 12:20 AM, Joshua Washington wrote: > Google cloud routes traffic using IP addresses without the support of MAC > addresses, so changing source IP address for txonly-multi-flow can have > negative performance implications for net/gve when using testpmd. This > patch updates txonly multiflow mode to modify source ports instead of > source IP addresses. > > The change can be tested with the following command: > dpdk-testpmd -- --forward-mode=txonly --txonly-multi-flow \ > --tx-ip=<SRC>,<DST> > > Signed-off-by: Joshua Washington <joshw...@google.com> > Reviewed-by: Rushil Gupta <rush...@google.com>
Hi Joshua, Aman, The reason to support multi-flow in Tx-only mode is, to test RSS in the Rx side. When used in guest, in a hypervisor infrastructure what is the usecase for multi-flow, why not use default single IP? And if there is a need to support multi-flow without updating source IP, what about to support various modes as "--txonly-multi-flow=XXX", where XXX can be src_ip, dst_ip, src_port, dst_port? If possible by keeping no param '--txonly-multi-flow' same as current usage (src_ip) for backward capability.. This extends testing capability and lets different platforms select different config based on their needs.
