[PATCH] virtio_net: fix rx_drops stat for small pkts
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STALE1761d
From: Wenliang Wang <hidden>
Date: 2021-12-16 03:12:48
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Subsystem:
networking drivers, the rest, virtio net driver · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds, "Michael S. Tsirkin", Jason Wang, Eugenio Pérez
We found the stat of rx drops for small pkts does not increment when build_skb fail, it's not coherent with other mode's rx drops stat. Signed-off-by: Wenliang Wang <redacted> --- drivers/net/virtio_net.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 55db6a336f7e..b107835242ad 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c@@ -733,7 +733,7 @@ static struct sk_buff *receive_small(struct net_device *dev, pr_debug("%s: rx error: len %u exceeds max size %d\n", dev->name, len, GOOD_PACKET_LEN); dev->stats.rx_length_errors++; - goto err_len; + goto err; } if (likely(!vi->xdp_enabled)) {
@@ -825,10 +825,8 @@ static struct sk_buff *receive_small(struct net_device *dev, skip_xdp: skb = build_skb(buf, buflen); - if (!skb) { - put_page(page); + if (!skb) goto err; - } skb_reserve(skb, headroom - delta); skb_put(skb, len); if (!xdp_prog) {
@@ -839,13 +837,12 @@ static struct sk_buff *receive_small(struct net_device *dev, if (metasize) skb_metadata_set(skb, metasize); -err: return skb; err_xdp: rcu_read_unlock(); stats->xdp_drops++; -err_len: +err: stats->drops++; put_page(page); xdp_xmit:
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2.30.2