@@ -452,6 +452,9 @@ sitnl_route_save(struct nlmsghdr *n, void *arg)
while (RTA_OK(rta, len))
{
+ struct rtnexthop *nh;
+ int nhlen;
+
switch (rta->rta_type)
{
/* route interface */
@@ -472,6 +475,38 @@ sitnl_route_save(struct nlmsghdr *n, void *arg)
case RTA_TABLE:
table = *(unsigned int *)RTA_DATA(rta);
break;
+
+ /* multipath nexthops */
+ case RTA_MULTIPATH:
+ nh = RTA_DATA(rta);
+ nhlen = RTA_PAYLOAD(rta);
+
+ while (RTNH_OK(nh, nhlen))
+ {
+ struct rtattr *nha = RTNH_DATA(nh);
+ int nhalen = nh->rtnh_len - sizeof(*nh);
+
+ /* route interface */
+ ifindex = nh->rtnh_ifindex;
+ /* initial route gateway */
+ gw = res->gw;
+
+ while (RTA_OK(nha, nhalen))
+ {
+ switch (nha->rta_type)
+ {
+ /* GW for the route */
+ case RTA_GATEWAY:
+ memcpy(&gw, RTA_DATA(nha), res->addr_size);
+ break;
+ }
+
+ nha = RTA_NEXT(nha, nhalen);
+ }
+
+ nh = RTNH_NEXT(nh);
+ }
+ break;
}
rta = RTA_NEXT(rta, len);
Load balancing setup over multiple upstreams may include multipath gateway route, which is not not supported by OpenVPN. Let's add basic support for that for selecting best route for zero destination address - use any one of nexthop addresses as a gateway, weights are not handled. Setup example: ip route add default \ nexthop via 192.168.1.1 dev eth1 weight 1 \ nexthop via 192.168.2.1 dev eth2 weight 1 Reported-By: Donald Sharp <donaldsharp72@gmail.com> Signed-off-by: Vladislav Grishenko <themiron@yandex-team.ru> --- src/openvpn/networking_sitnl.c | 35 ++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)