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Date: Sun, 7 Jan 2018 12:45:02 +0200 From: Ido Schimmel <idosch@...lanox.com> To: netdev@...r.kernel.org Cc: davem@...emloft.net, dsahern@...il.com, roopa@...ulusnetworks.com, nicolas.dichtel@...nd.com, weiwan@...gle.com, kafai@...com, yoshfuji@...ux-ipv6.org, mlxsw@...lanox.com, Ido Schimmel <idosch@...lanox.com> Subject: [PATCH net-next 02/18] ipv6: Mark dead nexthops with appropriate flags When a netdev is put administratively down or unregistered all the nexthops using it as their nexthop device should be marked with the 'dead' and 'linkdown' flags. Currently, when a route is dumped its nexthop device is tested and the flags are set accordingly. A similar check is performed during route lookup. Instead, we can simply mark the nexthops based on netdev events and avoid checking the netdev's state during route dump and lookup. Signed-off-by: Ido Schimmel <idosch@...lanox.com> --- net/ipv6/route.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index c557362daa23..f5eda0aeab55 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -3473,8 +3473,10 @@ static int fib6_ifdown(struct rt6_info *rt, void *arg) if (rt->dst.dev == dev && rt != adn->net->ipv6.ip6_null_entry && (rt->rt6i_nsiblings == 0 || netdev_unregistering(dev) || - !rt->rt6i_idev->cnf.ignore_routes_with_linkdown)) + !rt->rt6i_idev->cnf.ignore_routes_with_linkdown)) { + rt->rt6i_nh_flags |= (RTNH_F_DEAD | RTNH_F_LINKDOWN); return -1; + } return 0; } -- 2.14.3
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