diff options
| author | Magnus Karlsson <magnus.karlsson@intel.com> | 2020-12-02 18:07:23 +0300 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-03-15 22:04:51 +0300 |
| commit | 7d52fe2eaddfa3d7255d43c3e89ebf2748b7ea7a (patch) | |
| tree | be2547e8b101382eb77f797b268fcc7b8b162807 /drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | |
| parent | 346497c78d15cdd5bdc3b642a895009359e5457f (diff) | |
| download | linux-7d52fe2eaddfa3d7255d43c3e89ebf2748b7ea7a.tar.xz | |
ixgbe: optimize for XDP_REDIRECT in xsk path
Optimize ixgbe_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 under 100k extra
packets in throughput on my server when running l2fwd in xdpsock.
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Tested-by: Vishakha Jambekar <vishakha.jambekar@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c index 3771857cf887..91ad5b902673 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c @@ -104,6 +104,13 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter, xdp_prog = READ_ONCE(rx_ring->xdp_prog); act = bpf_prog_run_xdp(xdp_prog, xdp); + if (likely(act == XDP_REDIRECT)) { + err = xdp_do_redirect(rx_ring->netdev, xdp, xdp_prog); + result = !err ? IXGBE_XDP_REDIR : IXGBE_XDP_CONSUMED; + rcu_read_unlock(); + return result; + } + switch (act) { case XDP_PASS: break; @@ -115,10 +122,6 @@ static int ixgbe_run_xdp_zc(struct ixgbe_adapter *adapter, } result = ixgbe_xmit_xdp_ring(adapter, xdpf); break; - case XDP_REDIRECT: - err = xdp_do_redirect(rx_ring->netdev, xdp, xdp_prog); - result = !err ? IXGBE_XDP_REDIR : IXGBE_XDP_CONSUMED; - break; default: bpf_warn_invalid_xdp_action(act); fallthrough; |