From: Stijn Tintel <stijn@linux-ipv6.be>
Date: Fri, 21 Jul 2017 18:57:47 +0000 (+0200)
Subject: system-linux: fix GRE ikey/okey endianness
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=34afb764077768a361d76256fb05cbba172de223;p=project%2Fnetifd.git

system-linux: fix GRE ikey/okey endianness

The kernel expects IFLA_GRE_IKEY and IFLA_GRE_OKEY to be in network byte
order, so convert the values from host byte order.

Fixes ikey/okey on little endian systems.

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
---

diff --git a/system-linux.c b/system-linux.c
index f7704cf..483a98d 100644
--- a/system-linux.c
+++ b/system-linux.c
@@ -2446,10 +2446,10 @@ static int system_add_gre_tunnel(const char *name, const char *kind,
 		nla_put_u16(nlm, IFLA_GRE_IFLAGS, iflags);
 
 	if (okey)
-		nla_put_u32(nlm, IFLA_GRE_OKEY, okey);
+		nla_put_u32(nlm, IFLA_GRE_OKEY, htonl(okey));
 
 	if (ikey)
-		nla_put_u32(nlm, IFLA_GRE_IKEY, ikey);
+		nla_put_u32(nlm, IFLA_GRE_IKEY, htonl(ikey));
 
 	nla_nest_end(nlm, infodata);
 	nla_nest_end(nlm, linkinfo);