From: Jesper Dangaard Brouer Date: Thu, 14 May 2020 10:50:39 +0000 (+0200) Subject: vhost_net: Also populate XDP frame size X-Git-Tag: v5.10.7~2469^2~181^2~2^2~13 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=05afee298afc2f2497b7400b53e9d60fcc24d525;p=platform%2Fkernel%2Flinux-rpi.git vhost_net: Also populate XDP frame size In vhost_net_build_xdp() the 'buf' that gets queued via an xdp_buff have embedded a struct tun_xdp_hdr (located at xdp->data_hard_start) which contains the buffer length 'buflen' (with tailroom for skb_shared_info). Also storing this buflen in xdp->frame_sz, does not obsolete struct tun_xdp_hdr, as it also contains a struct virtio_net_hdr with other information. Signed-off-by: Jesper Dangaard Brouer Signed-off-by: Alexei Starovoitov Acked-by: Michael S. Tsirkin Acked-by: Jason Wang Link: https://lore.kernel.org/bpf/158945343928.97035.4620233649151726289.stgit@firesoul --- diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 2927f02..516519d 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -747,6 +747,7 @@ static int vhost_net_build_xdp(struct vhost_net_virtqueue *nvq, xdp->data = buf + pad; xdp->data_end = xdp->data + len; hdr->buflen = buflen; + xdp->frame_sz = buflen; --net->refcnt_bias; alloc_frag->offset += buflen;