netdev - [PATCH v3 net-next 2/2] net: skbuff: Coding: Use eth_type

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Date:   Tue, 20 Sep 2016 12:48:37 +0300
From:   Shmulik Ladkani <shmulik.ladkani@...ellosystems.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Jiri Pirko <jiri@...lanox.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Pravin Shelar <pshelar@....org>,
        Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org,
        Shmulik Ladkani <shmulik.ladkani@...il.com>
Subject: [PATCH v3 net-next 2/2] net: skbuff: Coding: Use eth_type_vlan() instead of open coding it

Fix 'skb_vlan_pop' to use eth_type_vlan instead of directly comparing
skb->protocol to ETH_P_8021Q or ETH_P_8021AD.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@...il.com>
---
 net/core/skbuff.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 93d6c5c..d6d0da5 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4564,8 +4564,7 @@ int skb_vlan_pop(struct sk_buff *skb)
 	if (likely(skb_vlan_tag_present(skb))) {
 		skb->vlan_tci = 0;
 	} else {
-		if (unlikely(skb->protocol != htons(ETH_P_8021Q) &&
-			     skb->protocol != htons(ETH_P_8021AD)))
+		if (unlikely(!eth_type_vlan(skb->protocol)))
 			return 0;
 
 		err = __skb_vlan_pop(skb, &vlan_tci);
@@ -4573,8 +4572,7 @@ int skb_vlan_pop(struct sk_buff *skb)
 			return err;
 	}
 	/* move next vlan tag to hw accel tag */
-	if (likely(skb->protocol != htons(ETH_P_8021Q) &&
-		   skb->protocol != htons(ETH_P_8021AD)))
+	if (likely(!eth_type_vlan(skb->protocol)))
 		return 0;
 
 	vlan_proto = skb->protocol;
-- 
1.9.1