From: Florian Fainelli <f.fainelli@gmail.com>
Date: Sat, 8 Apr 2017 15:55:21 +0000 (-0700)
Subject: net: dsa: Do not check for NULL dst in tag parsers
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=9d7f9c4f78e95dd9d17199a53d903262530be62e;p=openwrt%2Fstaging%2Fblogic.git

net: dsa: Do not check for NULL dst in tag parsers

dsa_switch_rcv() already tests for dst == NULL, so there is no need to duplicate
the same check within the tag receive functions.

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

diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c
index e2ed6cf68261..68d4feef96d4 100644
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -100,9 +100,6 @@ static int brcm_tag_rcv(struct sk_buff *skb, struct net_device *dev,
 	int source_port;
 	u8 *brcm_tag;
 
-	if (unlikely(dst == NULL))
-		goto out_drop;
-
 	ds = dst->cpu_switch;
 
 	skb = skb_unshare(skb, GFP_ATOMIC);
diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c
index e42ba906100c..377569c0e4f7 100644
--- a/net/dsa/tag_dsa.c
+++ b/net/dsa/tag_dsa.c
@@ -77,9 +77,6 @@ static int dsa_rcv(struct sk_buff *skb, struct net_device *dev,
 	int source_device;
 	int source_port;
 
-	if (unlikely(dst == NULL))
-		goto out_drop;
-
 	skb = skb_unshare(skb, GFP_ATOMIC);
 	if (skb == NULL)
 		goto out;
diff --git a/net/dsa/tag_edsa.c b/net/dsa/tag_edsa.c
index 6a9b7a9e4e15..30520ff9c9a2 100644
--- a/net/dsa/tag_edsa.c
+++ b/net/dsa/tag_edsa.c
@@ -90,9 +90,6 @@ static int edsa_rcv(struct sk_buff *skb, struct net_device *dev,
 	int source_device;
 	int source_port;
 
-	if (unlikely(dst == NULL))
-		goto out_drop;
-
 	skb = skb_unshare(skb, GFP_ATOMIC);
 	if (skb == NULL)
 		goto out;
diff --git a/net/dsa/tag_mtk.c b/net/dsa/tag_mtk.c
index 44ae6353a521..836c311a3c38 100644
--- a/net/dsa/tag_mtk.c
+++ b/net/dsa/tag_mtk.c
@@ -55,9 +55,6 @@ static int mtk_tag_rcv(struct sk_buff *skb, struct net_device *dev,
 	int port;
 	__be16 *phdr, hdr;
 
-	if (unlikely(!dst))
-		goto out_drop;
-
 	skb = skb_unshare(skb, GFP_ATOMIC);
 	if (!skb)
 		goto out;
diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c
index 4e0dad759d04..6579d6db1bc6 100644
--- a/net/dsa/tag_qca.c
+++ b/net/dsa/tag_qca.c
@@ -75,9 +75,6 @@ static int qca_tag_rcv(struct sk_buff *skb, struct net_device *dev,
 	int port;
 	__be16 *phdr, hdr;
 
-	if (unlikely(!dst))
-		goto out_drop;
-
 	skb = skb_unshare(skb, GFP_ATOMIC);
 	if (!skb)
 		goto out;
diff --git a/net/dsa/tag_trailer.c b/net/dsa/tag_trailer.c
index 74c948512550..f5c764ee2968 100644
--- a/net/dsa/tag_trailer.c
+++ b/net/dsa/tag_trailer.c
@@ -66,8 +66,6 @@ static int trailer_rcv(struct sk_buff *skb, struct net_device *dev,
 	u8 *trailer;
 	int source_port;
 
-	if (unlikely(dst == NULL))
-		goto out_drop;
 	ds = dst->cpu_switch;
 
 	skb = skb_unshare(skb, GFP_ATOMIC);