From 53f41fb568ae43034c9876cc9bd3961fd6d13671 Mon Sep 17 00:00:00 2001
From: Kylie McClain <somasis@exherbo.org>
Date: Wed, 30 Dec 2015 17:24:02 -0500
Subject: netinet/tcp: Add TCPOPT, TCPOLEN constants

Programs such as iptables depend on these constants, which can also
be found defined in other libcs.

Since only TCP_* is reserved as part of tcp.h's namespace, we hide
them behind _BSD_SOURCE (and therefore _DEFAULT_SOURCE) to expose
them by default, but keep it standard conforming.
---
 include/netinet/tcp.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/netinet/tcp.h b/include/netinet/tcp.h
index 52358c75..f9b84648 100644
--- a/include/netinet/tcp.h
+++ b/include/netinet/tcp.h
@@ -41,7 +41,20 @@
 #define TCP_CLOSING      11
 
 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+#define TCPOPT_EOL              0
+#define TCPOPT_NOP              1
+#define TCPOPT_MAXSEG           2
+#define TCPOPT_WINDOW           3
+#define TCPOPT_SACK_PERMITTED   4
+#define TCPOPT_SACK             5
+#define TCPOPT_TIMESTAMP        8
+#define TCPOLEN_SACK_PERMITTED  2
+#define TCPOLEN_WINDOW          3
+#define TCPOLEN_MAXSEG          4
+#define TCPOLEN_TIMESTAMP       10
+
 #define SOL_TCP 6
+
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <stdint.h>
-- 
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