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authorGavin Li <git@thegavinli.com>2014-11-24 15:51:31 -0800
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-11-27 00:24:52 -0500
commit59580681f5f950335b5ec40bb4c4a70dca6b2830 (patch)
treeb10899ee0dbb38ea2d261b7f43061d541d1b3d74 /src/network/networkd-route.c
parentbedd083aaedb3bbb14ef579a047bf4b4fed56d9b (diff)
networkd: route - allow routes without a gateway
For IPv6, the kernel returns EINVAL if a route is added with the RTA_GATEWAY attribute set to in6addr_any (::). A route without a gateway is useful in some situations, such as layer 3 tunneling (sit, gre, etc.). This patch prevents the RTA_GATEWAY attribute from being added when route.in_addr is ip6addr_any (::).
Diffstat (limited to 'src/network/networkd-route.c')
-rw-r--r--src/network/networkd-route.c32
1 files changed, 18 insertions, 14 deletions
diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c
index 10d8cd902a..82c9e002fd 100644
--- a/src/network/networkd-route.c
+++ b/src/network/networkd-route.c
@@ -118,13 +118,15 @@ int route_drop(Route *route, Link *link,
return r;
}
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
- if (r < 0) {
- log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
- return r;
+ if (!in_addr_is_null(route->family, &route->in_addr)) {
+ if (route->family == AF_INET)
+ r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
+ else if (route->family == AF_INET6)
+ r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
+ if (r < 0) {
+ log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
+ return r;
+ }
}
if (route->dst_prefixlen) {
@@ -203,13 +205,15 @@ int route_configure(Route *route, Link *link,
return r;
}
- if (route->family == AF_INET)
- r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
- else if (route->family == AF_INET6)
- r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
- if (r < 0) {
- log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
- return r;
+ if (!in_addr_is_null(route->family, &route->in_addr)) {
+ if (route->family == AF_INET)
+ r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
+ else if (route->family == AF_INET6)
+ r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
+ if (r < 0) {
+ log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
+ return r;
+ }
}
if (route->dst_prefixlen) {