From f51a5e82ea9aaf05106c00d976e772ca384a9199 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Mon, 1 Dec 2014 16:53:15 +0800 Subject: tun/macvtap: use consume_skb() instead of kfree_skb() when needed To be more friendly with drop monitor, we should only call kfree_skb() when the packets were dropped and use consume_skb() in other cases. Cc: Eric Dumazet Signed-off-by: Jason Wang Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller --- drivers/net/macvtap.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/net/macvtap.c') diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 22b4cf2fa108..ba1e5db2152e 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -859,7 +859,10 @@ static ssize_t macvtap_do_read(struct macvtap_queue *q, } if (skb) { ret = macvtap_put_user(q, skb, to); - kfree_skb(skb); + if (unlikely(ret < 0)) + kfree_skb(skb); + else + consume_skb(skb); } if (!noblock) finish_wait(sk_sleep(&q->sk), &wait); -- cgit v1.2.3