Messages in this thread Patch in this message | | | From | Jason Wang <> | Subject | [PATCH net-next V2] tun/macvtap: use consume_skb() instead of kfree_skb() when needed | Date | Wed, 26 Nov 2014 15:43:30 +0800 |
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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 <eric.dumazet@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com> --- Changes from V1: - check the return value of tun/macvtap_put_user() --- drivers/net/macvtap.c | 5 ++++- drivers/net/tun.c | 5 ++++- 2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 42a80d3..c171ab6 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -862,7 +862,10 @@ static ssize_t macvtap_do_read(struct macvtap_queue *q, } iov_iter_init(&iter, READ, iv, segs, len); ret = macvtap_put_user(q, skb, &iter); - kfree_skb(skb); + if (ret < 0) + kfree_skb(skb); + else + consume_skb(skb); break; } diff --git a/drivers/net/tun.c b/drivers/net/tun.c index ac53a73..a21c130 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1363,7 +1363,10 @@ static ssize_t tun_do_read(struct tun_struct *tun, struct tun_file *tfile, iov_iter_init(&iter, READ, iv, segs, len); ret = tun_put_user(tun, tfile, skb, &iter); - kfree_skb(skb); + if (ret < 0) + kfree_skb(skb); + else + consume_skb(skb); return ret; } -- 1.9.1
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