From af17a55dfd7a008dea74152e32f5d6c803b46bdd Mon Sep 17 00:00:00 2001
From: jhb <jhb@FreeBSD.org>
Date: Wed, 23 Jan 2013 21:44:48 +0000
Subject: Don't assume that all Linux TCP-level socket options are identical to
 FreeBSD TCP-level socket options (only the first two are).  Instead, using a
 mapping function and fail unsupported options as we do for other socket
 option levels.

MFC after:	2 weeks
---
 sys/compat/linux/linux_socket.c | 28 ++++++++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

(limited to 'sys/compat/linux/linux_socket.c')

diff --git a/sys/compat/linux/linux_socket.c b/sys/compat/linux/linux_socket.c
index 7271a18..cd288f8 100644
--- a/sys/compat/linux/linux_socket.c
+++ b/sys/compat/linux/linux_socket.c
@@ -56,6 +56,7 @@ __FBSDID("$FreeBSD$");
 #include <netinet/in.h>
 #include <netinet/in_systm.h>
 #include <netinet/ip.h>
+#include <netinet/tcp.h>
 #ifdef INET6
 #include <netinet/ip6.h>
 #include <netinet6/ip6_var.h>
@@ -326,6 +327,27 @@ linux_to_bsd_so_sockopt(int opt)
 }
 
 static int
+linux_to_bsd_tcp_sockopt(int opt)
+{
+
+	switch (opt) {
+	case LINUX_TCP_NODELAY:
+		return (TCP_NODELAY);
+	case LINUX_TCP_MAXSEG:
+		return (TCP_MAXSEG);
+	case LINUX_TCP_KEEPIDLE:
+		return (TCP_KEEPIDLE);
+	case LINUX_TCP_KEEPINTVL:
+		return (TCP_KEEPINTVL);
+	case LINUX_TCP_KEEPCNT:
+		return (TCP_KEEPCNT);
+	case LINUX_TCP_MD5SIG:
+		return (TCP_MD5SIG);
+	}
+	return (-1);
+}
+
+static int
 linux_to_bsd_msg_flags(int flags)
 {
 	int ret_flags = 0;
@@ -1496,8 +1518,7 @@ linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args)
 		name = linux_to_bsd_ip_sockopt(args->optname);
 		break;
 	case IPPROTO_TCP:
-		/* Linux TCP option values match BSD's */
-		name = args->optname;
+		name = linux_to_bsd_tcp_sockopt(args->optname);
 		break;
 	default:
 		name = -1;
@@ -1591,8 +1612,7 @@ linux_getsockopt(struct thread *td, struct linux_getsockopt_args *args)
 		name = linux_to_bsd_ip_sockopt(args->optname);
 		break;
 	case IPPROTO_TCP:
-		/* Linux TCP option values match BSD's */
-		name = args->optname;
+		name = linux_to_bsd_tcp_sockopt(args->optname);
 		break;
 	default:
 		name = -1;
-- 
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