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.hor...@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicin...@netronome.com>
---
 include/net/dst_metadata.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/net/dst_metadata.h b/include/net/dst_metadata.h
index a803129a4849..9fba2ebf6dda 100644
--- a/include/net/dst_metadata.h
+++ b/include/net/dst_metadata.h
@@ -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;
-- 
2.1.4

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