Add support to track current link status of ipv6 nexthops to match
recent changes that added support for ipv4 nexthops. This takes a
simple approach to track linkdown status for next-hops and simply
checks the dev for the dst entry and sets proper flags that to be used
in the netlink message.
v2: drop use of rt6i_nhflags since it is not needed right now
Signed-off-by: Andy Gospodarek <go...@cumulusnetworks.com>
Signed-off-by: Dinesh Dutt <dd...@cumulusnetworks.com>
---
I realize this patch might be a bit different expected based on
conversations on netdev yesterday, but I got a few off-list
communications that indicated a preference to not expand rt6_info at
this time -- despite the fact that expansion will likely be needed for
switchdev offload of ipv6 fib entries in the near future.
net/ipv6/route.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 54fccf0..26b51e1 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2885,6 +2885,8 @@ static int rt6_fill_node(struct net *net,
else
rtm->rtm_type = RTN_UNICAST;
rtm->rtm_flags = 0;
+ if (!netif_carrier_ok(rt->dst.dev))
+ rtm->rtm_flags |= RTNH_F_LINKDOWN;
rtm->rtm_scope = RT_SCOPE_UNIVERSE;
rtm->rtm_protocol = rt->rt6i_protocol;
if (rt->rt6i_flags & RTF_DYNAMIC)
--
1.9.3
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