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authorDavid Ahern <dsa@cumulusnetworks.com>2016-04-24 21:26:04 -0700
committerDavid S. Miller <davem@davemloft.net>2016-04-27 15:34:42 -0400
commit8c14586fc320acfed8a0048eb21d1f2e2856fc36 (patch)
tree28a510b3ec96dcd894d7b4f420bc1cbc1167ec2a /kernel/bpf
parent570d8e9398011a63590c281a36cdce311196608e (diff)
downloadlinux-sh-8c14586fc320acfed8a0048eb21d1f2e2856fc36.tar.gz
net: ipv6: Use passed in table for nexthop lookups
Similar to 3bfd847203c6 ("net: Use passed in table for nexthop lookups") for IPv4, if the route spec contains a table id use that to lookup the next hop first and fall back to a full lookup if it fails (per the fix 4c9bcd117918b ("net: Fix nexthop lookups")). Example: root@kenny:~# ip -6 ro ls table red local 2100:1::1 dev lo proto none metric 0 pref medium 2100:1::/120 dev eth1 proto kernel metric 256 pref medium local 2100:2::1 dev lo proto none metric 0 pref medium 2100:2::/120 dev eth2 proto kernel metric 256 pref medium local fe80::e0:f9ff:fe09:3cac dev lo proto none metric 0 pref medium local fe80::e0:f9ff:fe1c:b974 dev lo proto none metric 0 pref medium fe80::/64 dev eth1 proto kernel metric 256 pref medium fe80::/64 dev eth2 proto kernel metric 256 pref medium ff00::/8 dev red metric 256 pref medium ff00::/8 dev eth1 metric 256 pref medium ff00::/8 dev eth2 metric 256 pref medium unreachable default dev lo metric 240 error -113 pref medium root@kenny:~# ip -6 ro add table red 2100:3::/64 via 2100:1::64 RTNETLINK answers: No route to host Route add fails even though 2100:1::64 is a reachable next hop: root@kenny:~# ping6 -I red 2100:1::64 ping6: Warning: source address might be selected on device other than red. PING 2100:1::64(2100:1::64) from 2100:1::1 red: 56 data bytes 64 bytes from 2100:1::64: icmp_seq=1 ttl=64 time=1.33 ms With this patch: root@kenny:~# ip -6 ro add table red 2100:3::/64 via 2100:1::64 root@kenny:~# ip -6 ro ls table red local 2100:1::1 dev lo proto none metric 0 pref medium 2100:1::/120 dev eth1 proto kernel metric 256 pref medium local 2100:2::1 dev lo proto none metric 0 pref medium 2100:2::/120 dev eth2 proto kernel metric 256 pref medium 2100:3::/64 via 2100:1::64 dev eth1 metric 1024 pref medium local fe80::e0:f9ff:fe09:3cac dev lo proto none metric 0 pref medium local fe80::e0:f9ff:fe1c:b974 dev lo proto none metric 0 pref medium fe80::/64 dev eth1 proto kernel metric 256 pref medium fe80::/64 dev eth2 proto kernel metric 256 pref medium ff00::/8 dev red metric 256 pref medium ff00::/8 dev eth1 metric 256 pref medium ff00::/8 dev eth2 metric 256 pref medium unreachable default dev lo metric 240 error -113 pref medium Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf')
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