net/ipv6: Handle reject routes with onlink flag
Verification of nexthops with onlink flag need to handle unreachable
routes. The lookup is only intended to validate the gateway address
is not a local address and if the gateway resolves the egress device
must match the given device. Hence, hitting any default reject route
is ok.
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:
parent
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@ -2488,7 +2488,8 @@ static int ip6_route_check_nh_onlink(struct net *net,
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err = 0;
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err = 0;
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grt = ip6_nh_lookup_table(net, cfg, gw_addr, tbid, 0);
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grt = ip6_nh_lookup_table(net, cfg, gw_addr, tbid, 0);
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if (grt) {
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if (grt) {
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if (grt->rt6i_flags & flags || dev != grt->dst.dev) {
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if (!grt->dst.error &&
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(grt->rt6i_flags & flags || dev != grt->dst.dev)) {
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NL_SET_ERR_MSG(extack, "Nexthop has invalid gateway");
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NL_SET_ERR_MSG(extack, "Nexthop has invalid gateway");
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err = -EINVAL;
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err = -EINVAL;
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}
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}
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