diff options
| author | Christian Franke <chris@opensourcerouting.org> | 2013-07-05 15:35:39 +0000 |
|---|---|---|
| committer | David Lamparter <equinox@opensourcerouting.org> | 2013-09-19 18:04:40 +0200 |
| commit | e8d3d2991f72613edb76dea244a8c8e4684873dd (patch) | |
| tree | d02f768800ebaac51439368ff3d851e63ed6359e /zebra/rt_netlink.c | |
| parent | 48a53dc71cb422e619859b79d5069e02fcd867d0 (diff) | |
zebra: implement NEXTHOP_FLAG_ONLINK
On Linux, the kernel will only allow for a route to be installed when
its gateway is directly attached according the kernel fib.
There are cases when this restriction by the kernel is too strong, in
those cases, we deploy the RTNH_F_ONLINK netlink flag.
Signed-off-by: Christian Franke <chris@opensourcerouting.org>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Diffstat (limited to 'zebra/rt_netlink.c')
| -rw-r--r-- | zebra/rt_netlink.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/zebra/rt_netlink.c b/zebra/rt_netlink.c index b0ade058..7a820bfd 100644 --- a/zebra/rt_netlink.c +++ b/zebra/rt_netlink.c @@ -1443,8 +1443,11 @@ _netlink_route_build_singlepath( int bytelen, struct nexthop *nexthop, struct nlmsghdr *nlmsg, + struct rtmsg *rtmsg, size_t req_size) { + if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ONLINK)) + rtmsg->rtm_flags |= RTNH_F_ONLINK; if (nexthop->type == NEXTHOP_TYPE_IPV4 || nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX) { @@ -1534,6 +1537,9 @@ _netlink_route_build_multipath( rtnh->rtnh_hops = 0; rta->rta_len += rtnh->rtnh_len; + if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_ONLINK)) + rtnh->rtnh_flags |= RTNH_F_ONLINK; + if (nexthop->type == NEXTHOP_TYPE_IPV4 || nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX) { @@ -1733,7 +1739,8 @@ netlink_route_multipath (int cmd, struct prefix *p, struct rib *rib, _netlink_route_debug(cmd, p, nexthop, routedesc, family); _netlink_route_build_singlepath(routedesc, bytelen, - nexthop, &req.n, sizeof req); + nexthop, &req.n, &req.r, + sizeof req); if (cmd == RTM_NEWROUTE) SET_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB); |