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[IPV6]: ROUTE: Add support for Router Preference (RFC4191).

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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki
2006-03-20 17:04:53 -08:00
committed by David S. Miller
parent 8238dd0698
commit ebacaaa0fd
6 changed files with 49 additions and 7 deletions
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11
net/ipv6/route.c
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@@ -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;