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net/ipv6: Handle onlink flag with multipath routes 

For multipath routes the ONLINK flag can be specified per nexthop in
rtnh_flags or globally in rtm_flags. Update ip6_route_multipath_add
to consider the ONLINK setting coming from rtnh_flags. Each loop over
nexthops the config for the sibling route is initialized to the global
config and then per nexthop settings overlayed. The flag is 'or'ed into
fib6_config to handle the ONLINK flag coming from either rtm_flags or
rtnh_flags.

Fixes: fc1e64e109 ("net/ipv6: Add support for onlink flag")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2018-03-20 10:06:59 -07:00 committed by David S. Miller
parent 6d066734e9
commit 68e2ffdeb5
1 changed files with 1 additions and 0 deletions
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1
net/ipv6/route.c
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@ -4112,6 +4112,7 @@ static int ip6_route_multipath_add(struct fib6_config *cfg,
r_cfg.fc_encap_type = nla_get_u16(nla);
}
r_cfg.fc_flags |= (rtnh->rtnh_flags & RTNH_F_ONLINK);
rt = ip6_route_info_create(&r_cfg, extack);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);