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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2006-03-21 02:04:53 +0100
committerDavid S. Miller <davem@davemloft.net>2006-03-21 02:04:53 +0100
commitebacaaa0fdf4402cdf4c8e569f54af36b6f0aa2d (patch)
tree5d1cc0c6d94b5226507434bb86e6e2a69fdd4204 /net/ipv6/route.c
parent[IPV6]: ROUTE: Handle finding the next best route in reachability in BACKTRAC... (diff)
downloadlinux-ebacaaa0fdf4402cdf4c8e569f54af36b6f0aa2d.tar.xz
linux-ebacaaa0fdf4402cdf4c8e569f54af36b6f0aa2d.zip
[IPV6]: ROUTE: Add support for Router Preference (RFC4191).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--net/ipv6/route.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 6a068e7f81f1..a7030fed1a18 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -251,8 +251,11 @@ static int rt6_score_route(struct rt6_info *rt, int oif,
int m = rt6_check_dev(rt, oif);
if (!m && (strict & RT6_SELECT_F_IFACE))
return -1;
+#ifdef CONFIG_IPV6_ROUTER_PREF
+ m |= IPV6_DECODE_PREF(IPV6_EXTRACT_PREF(rt->rt6i_flags)) << 2;
+#endif
if (rt6_check_neigh(rt))
- m |= 4;
+ m |= 16;
else if (strict & RT6_SELECT_F_REACHABLE)
return -1;
return m;
@@ -1256,7 +1259,8 @@ struct rt6_info *rt6_get_dflt_router(struct in6_addr *addr, struct net_device *d
}
struct rt6_info *rt6_add_dflt_router(struct in6_addr *gwaddr,
- struct net_device *dev)
+ struct net_device *dev,
+ unsigned int pref)
{
struct in6_rtmsg rtmsg;
@@ -1264,7 +1268,8 @@ struct rt6_info *rt6_add_dflt_router(struct in6_addr *gwaddr,
rtmsg.rtmsg_type = RTMSG_NEWROUTE;
ipv6_addr_copy(&rtmsg.rtmsg_gateway, gwaddr);
rtmsg.rtmsg_metric = 1024;
- rtmsg.rtmsg_flags = RTF_GATEWAY | RTF_ADDRCONF | RTF_DEFAULT | RTF_UP | RTF_EXPIRES;
+ rtmsg.rtmsg_flags = RTF_GATEWAY | RTF_ADDRCONF | RTF_DEFAULT | RTF_UP | RTF_EXPIRES |
+ RTF_PREF(pref);
rtmsg.rtmsg_ifindex = dev->ifindex;