示例#1
0
int main(int argc, char *argv[])
{
	struct rtnl_link *link;
	struct nl_cache *link_cache;
	struct nl_sock *sk;
        struct nl_addr* addr;
	int err, master_index;

	sk = nl_socket_alloc();
	if ((err = nl_connect(sk, NETLINK_ROUTE)) < 0) {
		nl_perror(err, "Unable to connect socket");
		return err;
	}

	if ((err = rtnl_link_alloc_cache(sk, AF_UNSPEC, &link_cache)) < 0) {
		nl_perror(err, "Unable to allocate cache");
		return err;
	}

	if (!(master_index = rtnl_link_name2i(link_cache, "eth0"))) {
		fprintf(stderr, "Unable to lookup eth0");
		return -1;
	}

	link = rtnl_link_macvtap_alloc();

	rtnl_link_set_link(link, master_index);

	addr = nl_addr_build(AF_LLC, ether_aton("00:11:22:33:44:55"), ETH_ALEN);
	rtnl_link_set_addr(link, addr);
	nl_addr_put(addr);

	rtnl_link_macvtap_set_mode(link, rtnl_link_macvtap_str2mode("bridge"));

	if ((err = rtnl_link_add(sk, link, NLM_F_CREATE)) < 0) {
		nl_perror(err, "Unable to add link");
		return err;
	}

	rtnl_link_put(link);
	nl_close(sk);

	return 0;
}
示例#2
0
int main(int argc, char *argv[])
{
	struct rtnl_link *link;
	struct nl_cache *link_cache;
	struct nl_sock *sk;
	int err, master_index;

	sk = nl_socket_alloc();
	if ((err = nl_connect(sk, NETLINK_ROUTE)) < 0) {
		nl_perror(err, "Unable to connect socket");
		return err;
	}

	if ((err = rtnl_link_alloc_cache(sk, AF_UNSPEC, &link_cache)) < 0) {
		nl_perror(err, "Unable to allocate cache");
		return err;
	}

	if (!(master_index = rtnl_link_name2i(link_cache, "eth0"))) {
		fprintf(stderr, "Unable to lookup eth0");
		return -1;
	}

	if (!(link = rtnl_link_ipvlan_alloc())) {
		fprintf(stderr, "Unable to allocate link");
		return -1;
	}

	rtnl_link_set_link(link, master_index);
	rtnl_link_ipvlan_set_mode(link, rtnl_link_ipvlan_str2mode("l2"));

	if ((err = rtnl_link_add(sk, link, NLM_F_CREATE)) < 0) {
		nl_perror(err, "Unable to add link");
		return err;
	}

	rtnl_link_put(link);
	nl_close(sk);

	return 0;
}
示例#3
0
文件: vlan_util.c 项目: imw/hapd
/*
 * Add a vlan interface with name 'vlan_if_name', VLAN ID 'vid' and
 * tagged interface 'if_name'.
 *
 * returns -1 on error
 * returns 1 if the interface already exists
 * returns 0 otherwise
*/
int vlan_add(const char *if_name, int vid, const char *vlan_if_name)
{
	int ret = -1;
	struct nl_sock *handle = NULL;
	struct nl_cache *cache = NULL;
	struct rtnl_link *rlink = NULL;
	int if_idx = 0;

	wpa_printf(MSG_DEBUG, "VLAN: vlan_add(if_name=%s, vid=%d, "
		   "vlan_if_name=%s)", if_name, vid, vlan_if_name);

	if ((os_strlen(if_name) + 1) > IFNAMSIZ) {
		wpa_printf(MSG_ERROR, "VLAN: Interface name too long: '%s'",
			   if_name);
		return -1;
	}

	if ((os_strlen(vlan_if_name) + 1) > IFNAMSIZ) {
		wpa_printf(MSG_ERROR, "VLAN: Interface name too long: '%s'",
			   vlan_if_name);
		return -1;
	}

	handle = nl_socket_alloc();
	if (!handle) {
		wpa_printf(MSG_ERROR, "VLAN: failed to open netlink socket");
		goto vlan_add_error;
	}

	if (nl_connect(handle, NETLINK_ROUTE) < 0) {
		wpa_printf(MSG_ERROR, "VLAN: failed to connect to netlink");
		goto vlan_add_error;
	}

	if (rtnl_link_alloc_cache(handle, AF_UNSPEC, &cache) < 0) {
		cache = NULL;
		wpa_printf(MSG_ERROR, "VLAN: failed to alloc cache");
		goto vlan_add_error;
	}

	if (!(if_idx = rtnl_link_name2i(cache, if_name))) {
		/* link does not exist */
		wpa_printf(MSG_ERROR, "VLAN: interface %s does not exist",
			   if_name);
		goto vlan_add_error;
	}

	if ((rlink = rtnl_link_get_by_name(cache, vlan_if_name))) {
		/* link does exist */
		rtnl_link_put(rlink);
		rlink = NULL;
		wpa_printf(MSG_ERROR, "VLAN: interface %s already exists",
			   vlan_if_name);
		ret = 1;
		goto vlan_add_error;
	}

	rlink = rtnl_link_alloc();
	if (!rlink) {
		wpa_printf(MSG_ERROR, "VLAN: failed to allocate new link");
		goto vlan_add_error;
	}

	if (rtnl_link_set_type(rlink, "vlan") < 0) {
		wpa_printf(MSG_ERROR, "VLAN: failed to set link type");
		goto vlan_add_error;
	}

	rtnl_link_set_link(rlink, if_idx);
	rtnl_link_set_name(rlink, vlan_if_name);

	if (rtnl_link_vlan_set_id(rlink, vid) < 0) {
		wpa_printf(MSG_ERROR, "VLAN: failed to set link vlan id");
		goto vlan_add_error;
	}

	if (rtnl_link_add(handle, rlink, NLM_F_CREATE) < 0) {
		wpa_printf(MSG_ERROR, "VLAN: failed to create link %s for "
			   "vlan %d on %s (%d)",
			   vlan_if_name, vid, if_name, if_idx);
		goto vlan_add_error;
	}

	ret = 0;

vlan_add_error:
	if (rlink)
		rtnl_link_put(rlink);
	if (cache)
		nl_cache_free(cache);
	if (handle)
		nl_socket_free(handle);
	return ret;
}