diff --git a/sys/netinet/tcp.h b/sys/netinet/tcp.h
--- a/sys/netinet/tcp.h
+++ b/sys/netinet/tcp.h
@@ -348,6 +348,8 @@
 	u_int8_t	tcpi_options;		/* Options enabled on conn. */
 	u_int8_t	tcpi_snd_wscale:4,	/* RFC1323 send shift value. */
 			tcpi_rcv_wscale:4;	/* RFC1323 recv shift value. */
+	u_int8_t	__tcpi_delivery_rate_app_limited:1,
+			__tcpi_fastopen_client_fail:2;
 
 	u_int32_t	tcpi_rto;		/* Retransmission timeout (usec). */
 	u_int32_t	__tcpi_ato;
@@ -379,8 +381,49 @@
 	u_int32_t	__tcpi_rcv_rtt;
 	u_int32_t	tcpi_rcv_space;		/* Advertised recv window. */
 
+	u_int32_t	__tcpi_total_retrans;
+
+	u_int64_t	__tcpi_pacing_rate;
+	u_int64_t	__tcpi_max_pacing_rate;
+	u_int64_t	__tcpi_bytes_acked;	/* RFC4898 tcpEStatsAppHCThruOctetsAcked */
+	u_int64_t	__tcpi_bytes_received;	/* RFC4898 tcpEStatsAppHCThruOctetsReceived */
+	u_int32_t	__tcpi_segs_out;	/* RFC4898 tcpEStatsPerfSegsOut */
+	u_int32_t	__tcpi_segs_in;	/* RFC4898 tcpEStatsPerfSegsIn */
+
+	u_int32_t	__tcpi_notsent_bytes;
+	u_int32_t	__tcpi_min_rtt;
+	u_int32_t	__tcpi_data_segs_in;	/* RFC4898 tcpEStatsDataSegsIn */
+	u_int32_t	__tcpi_data_segs_out;	/* RFC4898 tcpEStatsDataSegsOut */
+
+	u_int64_t	__tcpi_delivery_rate;
+
+	u_int64_t	__tcpi_busy_time;	/* Time (usec) busy sending data */
+	u_int64_t	__tcpi_rwnd_limited;	/* Time (usec) limited by receive window */
+	u_int64_t	__tcpi_sndbuf_limited;	/* Time (usec) limited by send buffer */
+
+	u_int32_t	__tcpi_delivered;
+	u_int32_t	__tcpi_delivered_ce;
+
+	u_int64_t	__tcpi_bytes_sent;	/* RFC4898 tcpEStatsPerfHCDataOctetsOut */
+	u_int64_t	__tcpi_bytes_retrans;	/* RFC4898 tcpEStatsPerfOctetsRetrans */
+	u_int32_t	__tcpi_dsack_dups;	/* RFC4898 tcpEStatsStackDSACKDups */
+	u_int32_t	__tcpi_reord_seen;	/* reordering events seen */
+
+	u_int32_t	__tcpi_rcv_ooopack;	/* Out-of-order packets received */
+
+	u_int32_t	tcpi_snd_wnd;		/* peer's advertised receive window after
+						 * scaling (bytes)
+						 */
+	u_int32_t	__tcpi_received_ce;		/* # of CE marks received */
+	u_int32_t	__tcpi_delivered_e1_bytes;	/* Accurate ECN byte counters */
+	u_int32_t	__tcpi_delivered_e0_bytes;
+	u_int32_t	__tcpi_delivered_ce_bytes;
+	u_int32_t	__tcpi_received_e1_bytes;
+	u_int32_t	__tcpi_received_e0_bytes;
+	u_int32_t	__tcpi_received_ce_bytes;
+
+
 	/* FreeBSD extensions to tcp_info. */
-	u_int32_t	tcpi_snd_wnd;		/* Advertised send window. */
 	u_int32_t	tcpi_snd_bwnd;		/* No longer used. */
 	u_int32_t	tcpi_snd_nxt;		/* Next egress seqno */
 	u_int32_t	tcpi_rcv_nxt;		/* Next ingress seqno */
@@ -390,7 +433,7 @@
 	u_int32_t	tcpi_snd_zerowin;	/* Zero-sized windows sent */
 
 	/* Padding to grow without breaking ABI. */
-	u_int32_t	__tcpi_pad[26];		/* Padding. */
+	u_int32_t	__tcpi_pad[8];		/* Padding. */
 };
 
 /*