i40e: optimize for XDP_REDIRECT in xsk path
authorMagnus Karlsson <magnus.karlsson@intel.com>
Wed, 2 Dec 2020 15:07:22 +0000 (16:07 +0100)
committerTony Nguyen <anthony.l.nguyen@intel.com>
Mon, 15 Mar 2021 19:04:51 +0000 (12:04 -0700)
commit346497c78d15cdd5bdc3b642a895009359e5457f
treeef0b31b17cf2e1f206caafb0f428e2f0b123faf1
parent2117fce81f6b862aac0673abe8df0c60dca64bfa
i40e: optimize for XDP_REDIRECT in xsk path

Optimize i40e_run_xdp_zc() for the XDP program verdict being
XDP_REDIRECT in the xsk zero-copy path. This path is only used when
having AF_XDP zero-copy on and in that case most packets will be
directed to user space. This provides a little over 100k extra packets
in throughput on my server when running l2fwd in xdpsock.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: George Kuruvinakunnel <george.kuruvinakunnel@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
drivers/net/ethernet/intel/i40e/i40e_xsk.c