netdev - [PATCH net-next] net: constify is_skb

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Date:	Thu, 28 Apr 2016 17:59:28 +0200
From:	Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, roopa@...ulusnetworks.com,
	Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
Subject: [PATCH net-next] net: constify is_skb_forwardable's arguments

is_skb_forwardable is not supposed to change anything so constify its
arguments

Signed-off-by: Nikolay Aleksandrov <nikolay@...ulusnetworks.com>
---
Hit this while working on the bridge per-vlan stats and needed to pass a
constified skb down. skb_is_gso() already takes a const skb.

 include/linux/netdevice.h | 3 ++-
 net/core/dev.c            | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 18d8394f2e5d..f9d573e26db3 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -3260,7 +3260,8 @@ struct sk_buff *dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
 				    struct netdev_queue *txq, int *ret);
 int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb);
 int dev_forward_skb(struct net_device *dev, struct sk_buff *skb);
-bool is_skb_forwardable(struct net_device *dev, struct sk_buff *skb);
+bool is_skb_forwardable(const struct net_device *dev,
+			const struct sk_buff *skb);
 
 extern int		netdev_budget;
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 6324bc9267f7..36f0170a0754 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1741,7 +1741,7 @@ static inline void net_timestamp_set(struct sk_buff *skb)
 			__net_timestamp(SKB);		\
 	}						\
 
-bool is_skb_forwardable(struct net_device *dev, struct sk_buff *skb)
+bool is_skb_forwardable(const struct net_device *dev, const struct sk_buff *skb)
 {
 	unsigned int len;
 
-- 
2.4.11