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net/dst: Make skb parameter of skb{metadata_dst, tunnel_info}() const 

Make the skb parameter of skb_metadata_dst() and skb_tunnel_info()
const as they are not modified. This is in preparation for using
them in call-sites where skb is const.

Signed-off-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Simon Horman 2017-10-02 10:41:15 +02:00 committed by David S. Miller
parent 0929567a7a
commit 32f16369e5
1 changed files with 3 additions and 2 deletions
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5
include/net/dst_metadata.h
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@ -24,7 +24,7 @@ struct metadata_dst {
} u;
};
static inline struct metadata_dst *skb_metadata_dst(struct sk_buff *skb)
static inline struct metadata_dst *skb_metadata_dst(const struct sk_buff *skb)
{
struct metadata_dst *md_dst = (struct metadata_dst *) skb_dst(skb);
@ -34,7 +34,8 @@ static inline struct metadata_dst *skb_metadata_dst(struct sk_buff *skb)
return NULL;
}
static inline struct ip_tunnel_info *skb_tunnel_info(struct sk_buff *skb)
static inline struct ip_tunnel_info *
skb_tunnel_info(const struct sk_buff *skb)
{
struct metadata_dst *md_dst = skb_metadata_dst(skb);
struct dst_entry *dst;