Add information about TCP_INFO. Be a bit vague about struct tcp_info since

it is not standardised.

diff --git a/share/man/man4/tcp.4 b/share/man/man4/tcp.4
index dc3f769..7a81b9a 100644 (file)
--- a/share/man/man4/tcp.4
+++ b/share/man/man4/tcp.4
@@ -1,4 +1,4 @@
-.\"    $OpenBSD: tcp.4,v 1.25 2022/03/31 17:27:21 naddy Exp $
+.\"    $OpenBSD: tcp.4,v 1.26 2022/08/11 09:15:35 claudio Exp $
 .\"    $NetBSD: tcp.4,v 1.3 1994/11/30 16:22:35 jtc Exp $
 .\"
 .\" Copyright (c) 1983, 1991, 1993
@@ -30,7 +30,7 @@
 .\"
 .\"     @(#)tcp.4      8.1 (Berkeley) 6/5/93
 .\"
-.Dd $Mdocdate: March 31 2022 $
+.Dd $Mdocdate: August 11 2022 $
 .Dt TCP 4
 .Os
 .Sh NAME
@@ -113,6 +113,16 @@ supports several socket options which are set with
 and tested with
 .Xr getsockopt 2 .
 .Bl -ohang
+.It Cd TCP_INFO
+Retrieve information about a socket's underlying TCP session.
+.Dv TCP_INFO
+is only used with
+.Fn getsockopt .
+The argument is a pointer to an instance of
+.Vt "struct tcp_info"
+(from
+.In netinet/tcp.h ) .
+.Pp
 .It Cd TCP_NODELAY
 Under most circumstances,
 .Tn TCP