[DCCP]: Sample RTT from SYN exchange

Function:

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index fdd4217f1047..e668cf531bab 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -481,10 +481,12 @@ struct dccp_ackvec;
  * @dccps_hc_rx_insert_options -
  * @dccps_hc_tx_insert_options -
  * @dccps_xmit_timer - timer for when CCID is not ready to send
+ * @dccps_syn_rtt - RTT sample from Request/Response exchange (in usecs)
  */
 struct dccp_sock {
         /* inet_connection_sock has to be the first member of dccp_sock */
         struct inet_connection_sock     dccps_inet_connection;
+#define dccps_syn_rtt                   dccps_inet_connection.icsk_ack.lrcvtime
         __u64                           dccps_swl;
         __u64                           dccps_swh;
         __u64                           dccps_awl;