Previous patch marked nexthops with the 'dead' and 'linkdown' flags.
Clear these flags when the netdev comes back up.
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
---
include/net/ip6_route.h | 1 +
net/ipv6/addrconf.c | 3 +++
net/ipv6/route.c | 29 +++++++++++++++++++++++++++++
3 files changed, 33 insertions(+)
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 18e442ea93d8..caad39198c2a 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -169,6 +169,7 @@ void rt6_ifdown(struct net *net, struct net_device *dev);
void rt6_mtu_change(struct net_device *dev, unsigned int mtu);
void rt6_remove_prefsrc(struct inet6_ifaddr *ifp);
void rt6_clean_tohost(struct net *net, struct in6_addr *gateway);
+void rt6_sync_up(struct net_device *dev, unsigned int nh_flags);
static inline const struct rt6_info *skb_rt6_info(const struct sk_buff *skb)
{
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index ed06b1190f05..b6405568ed7b 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3484,6 +3484,9 @@ static int addrconf_notify(struct notifier_block *this,
unsigned long event,
if (run_pending)
addrconf_dad_run(idev);
+ /* Device has an address by now */
+ rt6_sync_up(dev, RTNH_F_DEAD);
+
/*
* If the MTU changed during the interface down,
* when the interface up, the changed MTU must be
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f5eda0aeab55..4796d87e0b93 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3459,6 +3459,35 @@ void rt6_clean_tohost(struct net *net, struct in6_addr
*gateway)
fib6_clean_all(net, fib6_clean_tohost, gateway);
}
+struct arg_netdev_event {
+ const struct net_device *dev;
+ unsigned int nh_flags;
+};
+
+static int fib6_ifup(struct rt6_info *rt, void *p_arg)
+{
+ const struct arg_netdev_event *arg = p_arg;
+ const struct net *net = dev_net(arg->dev);
+
+ if (rt != net->ipv6.ip6_null_entry && rt->dst.dev == arg->dev)
+ rt->rt6i_nh_flags &= ~arg->nh_flags;
+
+ return 0;
+}
+
+void rt6_sync_up(struct net_device *dev, unsigned int nh_flags)
+{
+ struct arg_netdev_event arg = {
+ .dev = dev,
+ .nh_flags = nh_flags,
+ };
+
+ if (nh_flags & RTNH_F_DEAD && netif_carrier_ok(dev))
+ arg.nh_flags |= RTNH_F_LINKDOWN;
+
+ fib6_clean_all(dev_net(dev), fib6_ifup, &arg);
+}
+
struct arg_dev_net {
struct net_device *dev;
struct net *net;
--
2.14.3
