Messages in this thread | | | Date | Thu, 27 Nov 2014 13:02:04 +0800 | From | Jason Wang <> | Subject | Re: [PATCH net-next V2] tun/macvtap: use consume_skb() instead of kfree_skb() when needed |
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On 11/26/2014 09:47 PM, Michael S. Tsirkin wrote: > On Wed, Nov 26, 2014 at 03:43:30PM +0800, Jason Wang wrote: >> >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) > Maybe unlikely() here? >
Better, will post V3.
Thanks
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