1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 86a7edaa6797..90edef5508f9 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -217,6 +217,9 @@ struct tcp_sock {
         u32     mdev_max_us;    /* maximal mdev for the last rtt period */
         u32     rttvar_us;      /* smoothed mdev_max                    */
         u32     rtt_seq;        /* sequence number to update rttvar     */
+        struct rtt_meas {
+                u32 rtt, ts;    /* RTT in usec and sampling time in jiffies. */
+        } rtt_min[3];
 
         u32     packets_out;    /* Packets which are "in flight"        */
         u32     retrans_out;    /* Retransmitted packets out            */