From: Jesper Dangaard Brouer <brouer@redhat.com>
Date: Thu, 14 May 2020 12:49:12 +0200
Subject: sfc: Add XDP frame size
Patch-mainline: v5.8-rc1
Git-commit: 983e43451830742fa93f83656ccbdcb865ea4259
References: jsc#SLE-16683
This driver uses RX page-split when possible. It was recently fixed
in commit 86e85bf6981c ("sfc: fix XDP-redirect in this driver") to
add needed tailroom for XDP-redirect.
After the fix efx->rx_page_buf_step is the frame size, with enough
head and tail-room for XDP-redirect.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/158945335278.97035.14611425333184621652.stgit@firesoul
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/sfc/rx.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/net/ethernet/sfc/rx.c
+++ b/drivers/net/ethernet/sfc/rx.c
@@ -308,6 +308,7 @@ static bool efx_do_xdp(struct efx_nic *e
xdp_set_data_meta_invalid(&xdp);
xdp.data_end = xdp.data + rx_buf->len;
xdp.rxq = &rx_queue->xdp_rxq_info;
+ xdp.frame_sz = efx->rx_page_buf_step;
xdp_act = bpf_prog_run_xdp(xdp_prog, &xdp);
rcu_read_unlock();