net-timestamp: optimize sock_tx_timestamp default path
Few packets have timestamping enabled. Exit sock_tx_timestamp quickly
in this common case.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sock.h b/include/net/sock.h
index 049ab1b..515a4d0 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2199,6 +2199,8 @@
sk->sk_stamp = skb->tstamp;
}
+void __sock_tx_timestamp(const struct sock *sk, __u8 *tx_flags);
+
/**
* sock_tx_timestamp - checks whether the outgoing packet is to be time stamped
* @sk: socket sending this packet
@@ -2206,7 +2208,13 @@
*
* Note : callers should take care of initial *tx_flags value (usually 0)
*/
-void sock_tx_timestamp(const struct sock *sk, __u8 *tx_flags);
+static inline void sock_tx_timestamp(const struct sock *sk, __u8 *tx_flags)
+{
+ if (unlikely(sk->sk_tsflags))
+ __sock_tx_timestamp(sk, tx_flags);
+ if (unlikely(sock_flag(sk, SOCK_WIFI_STATUS)))
+ *tx_flags |= SKBTX_WIFI_STATUS;
+}
/**
* sk_eat_skb - Release a skb if it is no longer needed