net-timestamp: sock_tx_timestamp() fix

[mirror_ubuntu-artful-kernel.git] / include / net / sock.h

diff --git a/include/net/sock.h b/include/net/sock.h
index 52fe0bc5598a175f69da42203592c26f74befa80..38805fa02e48c466d57d80343abf7a1a93126ee6 100644 (file)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2199,9 +2199,11 @@ static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
 /**
  * sock_tx_timestamp - checks whether the outgoing packet is to be time stamped
  * @sk:                socket sending this packet
- * @tx_flags:  filled with instructions for time stamping
+ * @tx_flags:  completed with instructions for time stamping
+ *
+ * Note : callers should take care of initial *tx_flags value (usually 0)
  */
-void sock_tx_timestamp(struct sock *sk, __u8 *tx_flags);
+void sock_tx_timestamp(const struct sock *sk, __u8 *tx_flags);
 
 /**
  * sk_eat_skb - Release a skb if it is no longer needed