linux-kernel - [PATCH 4.4 262/312] macvtap: segmented packet is consumed

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Date:   Fri,  8 May 2020 14:34:13 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
        Vlad Yasevich <vyasevic@...hat.com>,
        Shmulik Ladkani <shmulik.ladkani@...il.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.4 262/312] macvtap: segmented packet is consumed

From: Eric Dumazet <edumazet@...gle.com>

commit be0bd3160165e42783d8215f426e41c07179c08a upstream.

If GSO packet is segmented and its segments are properly queued,
we call consume_skb() instead of kfree_skb() to be drop monitor
friendly.

Fixes: 3e4f8b7873709 ("macvtap: Perform GSO on forwarding path.")
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Cc: Vlad Yasevich <vyasevic@...hat.com>
Reviewed-by: Shmulik Ladkani <shmulik.ladkani@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -373,7 +373,7 @@ static rx_handler_result_t macvtap_handl
 			goto wake_up;
 		}

-		kfree_skb(skb);
+		consume_skb(skb);
 		while (segs) {
 			struct sk_buff *nskb = segs->next;