netdev - [PATCH net-next v4 2/2] virtio-net: remove GUEST

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Date: Wed, 28 Jun 2023 11:05:06 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: netdev@...r.kernel.org,
	bpf@...r.kernel.org,
	"Michael S . Tsirkin" <mst@...hat.com>,
	Jason Wang <jasowang@...hat.com>
Cc: "David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Jesper Dangaard Brouer <hawk@...nel.org>,
	John Fastabend <john.fastabend@...il.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: [PATCH net-next v4 2/2] virtio-net: remove GUEST_CSUM check for XDP

XDP and GUEST_CSUM no longer conflict now, so we remove the
check for GUEST_CSUM for XDP loading/unloading.

Signed-off-by: Heng Qi <hengqi@...ux.alibaba.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
---
v3->v4:
  - 'removed' -> 'remove'

v1->v2:
  - Rewrite the commit log.

 drivers/net/virtio_net.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index a47342f972b5..bd387f3c5d35 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -60,7 +60,6 @@ static const unsigned long guest_offloads[] = {
 	VIRTIO_NET_F_GUEST_TSO6,
 	VIRTIO_NET_F_GUEST_ECN,
 	VIRTIO_NET_F_GUEST_UFO,
-	VIRTIO_NET_F_GUEST_CSUM,
 	VIRTIO_NET_F_GUEST_USO4,
 	VIRTIO_NET_F_GUEST_USO6,
 	VIRTIO_NET_F_GUEST_HDRLEN
@@ -3433,10 +3432,9 @@ static int virtnet_xdp_set(struct net_device *dev, struct bpf_prog *prog,
 	        virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_TSO6) ||
 	        virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_ECN) ||
 		virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_UFO) ||
-		virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_CSUM) ||
 		virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_USO4) ||
 		virtio_has_feature(vi->vdev, VIRTIO_NET_F_GUEST_USO6))) {
-		NL_SET_ERR_MSG_MOD(extack, "Can't set XDP while host is implementing GRO_HW/CSUM, disable GRO_HW/CSUM first");
+		NL_SET_ERR_MSG_MOD(extack, "Can't set XDP while host is implementing GRO_HW, disable GRO_HW first");
 		return -EOPNOTSUPP;
 	}
 
-- 
2.19.1.6.gb485710b