From 43b5169d8355ccf26d726fbc75f083b2429113e4 Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Tue, 22 Dec 2020 22:09:28 +0100 Subject: net, xdp: Introduce xdp_init_buff utility routine Introduce xdp_init_buff utility routine to initialize xdp_buff fields const over NAPI iterations (e.g. frame_sz or rxq pointer). Rely on xdp_init_buff in all XDP capable drivers. Signed-off-by: Lorenzo Bianconi Signed-off-by: Daniel Borkmann Reviewed-by: Alexander Duyck Acked-by: Jesper Dangaard Brouer Acked-by: John Fastabend Acked-by: Shay Agroskin Acked-by: Martin Habets Acked-by: Camelia Groza Acked-by: Marcin Wojtas Link: https://lore.kernel.org/bpf/7f8329b6da1434dc2b05a77f2e800b29628a8913.1608670965.git.lorenzo@kernel.org Signed-off-by: Alexei Starovoitov --- drivers/net/xen-netfront.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/net/xen-netfront.c') diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index b01848ef4649..329397c60d84 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -864,12 +864,12 @@ static u32 xennet_run_xdp(struct netfront_queue *queue, struct page *pdata, u32 act; int err; + xdp_init_buff(xdp, XEN_PAGE_SIZE - XDP_PACKET_HEADROOM, + &queue->xdp_rxq); xdp->data_hard_start = page_address(pdata); xdp->data = xdp->data_hard_start + XDP_PACKET_HEADROOM; xdp_set_data_meta_invalid(xdp); xdp->data_end = xdp->data + len; - xdp->rxq = &queue->xdp_rxq; - xdp->frame_sz = XEN_PAGE_SIZE - XDP_PACKET_HEADROOM; act = bpf_prog_run_xdp(prog, xdp); switch (act) { -- cgit v1.2.3