From: Doug Berger <opendmb@gmail.com>
Date: Wed, 18 Dec 2019 00:51:14 +0000 (-0800)
Subject: net: bcmgenet: Be drop monitor friendly while re-allocating headroom
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e3fa85883d1566d788960c0f31866a26c898c070;p=openwrt%2Fstaging%2Fblogic.git

net: bcmgenet: Be drop monitor friendly while re-allocating headroom

During bcmgenet_put_tx_csum() make sure we differentiate a SKB
headroom re-allocation failure from the normal swap and replace
path.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 13e9154db253..e2bca19bf10b 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -1499,11 +1499,12 @@ static struct sk_buff *bcmgenet_put_tx_csum(struct net_device *dev,
 		 * enough headroom for us to insert 64B status block.
 		 */
 		new_skb = skb_realloc_headroom(skb, sizeof(*status));
-		dev_kfree_skb(skb);
 		if (!new_skb) {
+			dev_kfree_skb_any(skb);
 			dev->stats.tx_dropped++;
 			return NULL;
 		}
+		dev_consume_skb_any(skb);
 		skb = new_skb;
 	}