net: speedup sock_recv_ts_and_drops()

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

diff --git a/include/net/sock.h b/include/net/sock.h
index d361c7769fe0e6287d6ce761f9d7a223df2c3e3b..e1777db5b9ab07a9bf1b07453fa39941cc390018 100644 (file)
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1635,7 +1635,24 @@ sock_recv_timestamp(struct msghdr *msg, struct sock *sk, struct sk_buff *skb)
                sk->sk_stamp = kt;
 }
 
-extern void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk, struct sk_buff *skb);
+extern void __sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
+                                    struct sk_buff *skb);
+
+static inline void sock_recv_ts_and_drops(struct msghdr *msg, struct sock *sk,
+                                         struct sk_buff *skb)
+{
+#define FLAGS_TS_OR_DROPS ((1UL << SOCK_RXQ_OVFL)                      | \
+                          (1UL << SOCK_RCVTSTAMP)                      | \
+                          (1UL << SOCK_TIMESTAMPING_RX_SOFTWARE)       | \
+                          (1UL << SOCK_TIMESTAMPING_SOFTWARE)          | \
+                          (1UL << SOCK_TIMESTAMPING_RAW_HARDWARE)      | \
+                          (1UL << SOCK_TIMESTAMPING_SYS_HARDWARE))
+
+       if (sk->sk_flags & FLAGS_TS_OR_DROPS)
+               __sock_recv_ts_and_drops(msg, sk, skb);
+       else
+               sk->sk_stamp = skb->tstamp;
+}
 
 /**
  * sock_tx_timestamp - checks whether the outgoing packet is to be time stamped