diff options
Diffstat (limited to 'zebra/rt_netlink.c')
| -rw-r--r-- | zebra/rt_netlink.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/zebra/rt_netlink.c b/zebra/rt_netlink.c index 882babec81..466e985494 100644 --- a/zebra/rt_netlink.c +++ b/zebra/rt_netlink.c @@ -90,6 +90,18 @@ struct gw_family_t { static const char ipv4_ll_buf[16] = "169.254.0.1"; static struct in_addr ipv4_ll; +/* Is this a ipv4 over ipv6 route? */ +static bool is_route_v4_over_v6(unsigned char rtm_family, + enum nexthop_types_t nexthop_type) +{ + if (rtm_family == AF_INET + && (nexthop_type == NEXTHOP_TYPE_IPV6 + || nexthop_type == NEXTHOP_TYPE_IPV6_IFINDEX)) + return true; + + return false; +} + /* Helper to control use of kernel-level nexthop ids */ static bool kernel_nexthops_supported(void) { @@ -1165,9 +1177,7 @@ static void _netlink_route_build_singlepath(const struct prefix *p, if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK)) rtmsg->rtm_flags |= RTNH_F_ONLINK; - if (rtmsg->rtm_family == AF_INET - && (nexthop->type == NEXTHOP_TYPE_IPV6 - || nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX)) { + if (is_route_v4_over_v6(rtmsg->rtm_family, nexthop->type)) { rtmsg->rtm_flags |= RTNH_F_ONLINK; addattr_l(nlmsg, req_size, RTA_GATEWAY, &ipv4_ll, 4); addattr32(nlmsg, req_size, RTA_OIF, nexthop->ifindex); @@ -1342,9 +1352,7 @@ _netlink_route_build_multipath(const struct prefix *p, const char *routedesc, if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_ONLINK)) rtnh->rtnh_flags |= RTNH_F_ONLINK; - if (rtmsg->rtm_family == AF_INET - && (nexthop->type == NEXTHOP_TYPE_IPV6 - || nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX)) { + if (is_route_v4_over_v6(rtmsg->rtm_family, nexthop->type)) { bytelen = 4; rtnh->rtnh_flags |= RTNH_F_ONLINK; rta_addattr_l(rta, NL_PKT_BUF_SIZE, RTA_GATEWAY, &ipv4_ll, |