int link_config_ctx_new(link_config_ctx **ret) {
_cleanup_link_config_ctx_free_ link_config_ctx *ctx = NULL;
- int r;
if (!ret)
return -EINVAL;
if (!ctx)
return -ENOMEM;
- r = ethtool_connect(&ctx->ethtool_fd);
- if (r < 0)
- return r;
-
- r = sd_rtnl_open(0, &ctx->rtnl);
- if (r < 0)
- return r;
-
LIST_HEAD_INIT(ctx->links);
+ ctx->ethtool_fd = -1;
+
ctx->link_dirs = strv_new("/etc/systemd/network",
"/run/systemd/network",
"/usr/lib/systemd/network",
return 0;
}
+static int link_config_ctx_connect(link_config_ctx *ctx) {
+ int r;
+
+ if (ctx->ethtool_fd >= 0 && ctx->rtnl)
+ return 0;
+
+ r = ethtool_connect(&ctx->ethtool_fd);
+ if (r < 0)
+ return r;
+
+ r = sd_rtnl_open(0, &ctx->rtnl);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
static void link_configs_free(link_config_ctx *ctx) {
link_config *link, *link_next;
struct ether_addr *mac = NULL;
int r, ifindex;
+ r = link_config_ctx_connect(ctx);
+ if (r < 0)
+ return r;
+
name = udev_device_get_sysname(device);
if (!name)
return -EINVAL;