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-rw-r--r--include/linux/tcp.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index fb67f9a51b95..da6281c549a5 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -188,6 +188,9 @@ struct tcp_sock {
* sum(delta(snd_una)), or how many bytes
* were acked.
*/
+ u32 dsack_dups; /* RFC4898 tcpEStatsStackDSACKDups
+ * total number of DSACK blocks received
+ */
u32 snd_una; /* First byte we want an ack for */
u32 snd_sml; /* Last byte of the most recently transmitted small packet */
u32 rcv_tstamp; /* timestamp of last received ACK (for keepalives) */