net: buf: Make net_buf_user_data() parameter const

Johan Hedberg · jhedberg · commit 982385277b9c · 2018-06-28T10:49:52.000+03:00
This API doesn't modify the input buffer in anyway, so declare it as
const.

Signed-off-by: Johan Hedberg &lt;johan.hedberg@intel.com&gt;
diff --git a/include/net/buf.h b/include/net/buf.h
@@ -971,7 +971,7 @@ struct net_buf *net_buf_clone(struct net_buf *buf, s32_t timeout);
  *
  *  @return Pointer to the user data of the buffer.
  */
-static inline void *net_buf_user_data(struct net_buf *buf)
+static inline void *net_buf_user_data(const struct net_buf *buf)
 {
 	return (void *)buf->user_data;
 }

Original file line number	Diff line number	Diff line change
`@@ -971,7 +971,7 @@ struct net_buf net_buf_clone(struct net_buf buf, s32_t timeout);`
`971`	`971`	`*`
`972`	`972`	`* @return Pointer to the user data of the buffer.`
`973`	`973`	`*/`
`974`		`-static inline void net_buf_user_data(struct net_buf buf)`
	`974`	`+static inline void net_buf_user_data(const struct net_buf buf)`
`975`	`975`	`{`
`976`	`976`	`return (void *)buf->user_data;`
`977`	`977`	`}`