linux-kernel - [PATCH net-next] virtio

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Message-ID: <20190115012847.14730-1-mst@redhat.com>
Date:   Mon, 14 Jan 2019 20:34:26 -0500
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Subject: [PATCH net-next] virtio_net: bulk free tx skbs

Use napi_consume_skb() to get bulk free.  Note that napi_consume_skb is
safe to call in a non-napi context as long as the napi_budget flag is
correct.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---

My perf testing setup is down but it works fine on my devel box and
should be fairly uncontroversial.

 drivers/net/virtio_net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 023725086046..d76dcc68cbb6 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1343,7 +1343,7 @@ static void free_old_xmit_skbs(struct send_queue *sq)
 		bytes += skb->len;
 		packets++;
 
-		dev_consume_skb_any(skb);
+		napi_consume_skb(skb, use_napi);
 	}
 
 	/* Avoid overhead when no packets have been processed
-- 
MST