XDP progs are likely to read/write xdp->data. This improves the performance of xdp_flow. Signed-off-by: Toshiaki Makita <toshiaki.makita1@xxxxxxxxx> --- drivers/net/ethernet/intel/i40e/i40e_txrx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index e3f29dc..a85a4ae 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -2207,6 +2207,7 @@ static struct sk_buff *i40e_run_xdp(struct i40e_ring *rx_ring, if (!xdp_prog) goto xdp_out; + prefetchw(xdp->data); prefetchw(xdp->data_hard_start); /* xdp_frame write */ act = bpf_prog_run_xdp(xdp_prog, xdp); -- 1.8.3.1
