netdev - [PATCH 54/54] if_vlan: Call dev_kfree_skb_any instead of kfree

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Message-Id: <1395727540-12148-54-git-send-email-ebiederm@xmission.com>
Date:	Mon, 24 Mar 2014 23:05:40 -0700
From:	"Eric W. Biederman" <ebiederm@...ssion.com>
To:	David Miller <davem@...emloft.net>
Cc:	eric.dumazet@...il.com, netdev@...r.kernel.org,
	xiyou.wangcong@...il.com, mpm@...enic.com, satyam.sharma@...il.com,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH 54/54] if_vlan: Call dev_kfree_skb_any instead of kfree_skb.

From: "Eric W. Biederman" <ebiederm@...ssion.com>

Replace kfree_skb with dev_kfree_skb_any in vlan_insert_tag as
vlan_insert_tag can be called from hard irq context (netpoll)
and from other contexts.

dev_kfree_skb_any is used as vlan_insert_tag only frees the skb if the
skb can not be modified to insert a tag, in which case vlan_insert_tag
drops the skb.

Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
 include/linux/if_vlan.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index bbedfb56bd66..d3d2306f00bf 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -288,7 +288,7 @@ static inline struct sk_buff *vlan_insert_tag(struct sk_buff *skb,
 	struct vlan_ethhdr *veth;
 
 	if (skb_cow_head(skb, VLAN_HLEN) < 0) {
-		kfree_skb(skb);
+		dev_kfree_skb_any(skb);
 		return NULL;
 	}
 	veth = (struct vlan_ethhdr *)skb_push(skb, VLAN_HLEN);
-- 
1.7.10.4

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