1 files changed, 5 insertions, 0 deletions

diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h
index 2e2f88acbcbcb..48305788d0976 100644
--- a/sys/netinet/tcp_var.h
+++ b/sys/netinet/tcp_var.h
@@ -580,6 +580,11 @@ struct	tcpstat {
 	uint64_t tcps_sig_err_sigopt;	/* No signature expected by socket */
 	uint64_t tcps_sig_err_nosigopt;	/* No signature provided by segment */
 
+	/* Path MTU Discovery Black Hole Detection related stats */
+	uint64_t tcps_pmtud_blackhole_activated;	 /* Black Hole Count */
+	uint64_t tcps_pmtud_blackhole_activated_min_mss; /* BH at min MSS Count */
+	uint64_t tcps_pmtud_blackhole_failed;		 /* Black Hole Failure Count */
+
 	uint64_t _pad[12];		/* 6 UTO, 6 TBD */
 };