netdev - [RFC PATCH 3/9] virtio_net: update bytes calculation for xdp

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Message-Id: <20221122074348.88601-4-hengqi@linux.alibaba.com>
Date:   Tue, 22 Nov 2022 15:43:42 +0800
From:   Heng Qi <hengqi@...ux.alibaba.com>
To:     netdev@...r.kernel.org, bpf@...r.kernel.org
Cc:     Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        John Fastabend <john.fastabend@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>
Subject: [RFC PATCH 3/9] virtio_net: update bytes calculation for xdp_frame

Update relative record value for xdp_frame as basis
for multi-buffer xdp transmission.

Signed-off-by: Heng Qi <hengqi@...ux.alibaba.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
---
 drivers/net/virtio_net.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 8f7d207d58d6..d3e8c63b9c4b 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -658,7 +658,7 @@ static int virtnet_xdp_xmit(struct net_device *dev,
 		if (likely(is_xdp_frame(ptr))) {
 			struct xdp_frame *frame = ptr_to_xdp(ptr);
 
-			bytes += frame->len;
+			bytes += xdp_get_frame_len(frame);
 			xdp_return_frame(frame);
 		} else {
 			struct sk_buff *skb = ptr;
@@ -1604,7 +1604,7 @@ static void free_old_xmit_skbs(struct send_queue *sq, bool in_napi)
 		} else {
 			struct xdp_frame *frame = ptr_to_xdp(ptr);
 
-			bytes += frame->len;
+			bytes += xdp_get_frame_len(frame);
 			xdp_return_frame(frame);
 		}
 		packets++;
-- 
2.19.1.6.gb485710b