2  * lib/route/link/veth.c	Virtual Ethernet
13  * @ingroup link
18  * \b Link Type Name: "veth"
31 #include <netlink-private/route/link/api.h>
32 #include <netlink/route/link/veth.h>
40 static int veth_parse(struct rtnl_link *link, struct nlattr *data,  in veth_parse()  argument
45 	struct rtnl_link *peer = link->l_info;  in veth_parse()
48 	NL_DBG(3, "Parsing veth link info");  in veth_parse()
83 static void veth_dump_line(struct rtnl_link *link, struct nl_dump_params *p)  in veth_dump_line()  argument
87 static void veth_dump_details(struct rtnl_link *link, struct nl_dump_params *p)  in veth_dump_details()  argument
89 	struct rtnl_link *peer = link->l_info;  in veth_dump_details()
117 static int veth_put_attrs(struct nl_msg *msg, struct rtnl_link *link)  in veth_put_attrs()  argument
119 	struct rtnl_link *peer = link->l_info;  in veth_put_attrs()
143 static int veth_alloc(struct rtnl_link *link)  in veth_alloc()  argument
149 	if (link->l_info)  in veth_alloc()
155 	/* We don't need to hold a reference here, as link and  in veth_alloc()
158 	peer->l_info = link;  in veth_alloc()
164 	link->l_info = peer;  in veth_alloc()
168 static void veth_free(struct rtnl_link *link)  in veth_free()  argument
170 	struct rtnl_link *peer = link->l_info;  in veth_free()
172 		link->l_info = NULL;  in veth_free()
177 	/* the caller should finally free link */  in veth_free()
195 #define IS_VETH_LINK_ASSERT(link) \  argument
196 	if ((link)->l_info_ops != &veth_info_ops) { \
197 		APPBUG("Link is not a veth link. set type \"veth\" first."); \
208  * Allocate link object of type veth
210  * @return Allocated link object or NULL.
214 	struct rtnl_link *link;  in rtnl_link_veth_alloc()  local
217 	if (!(link = rtnl_link_alloc()))  in rtnl_link_veth_alloc()
219 	if ((err = rtnl_link_set_type(link, "veth")) < 0) {  in rtnl_link_veth_alloc()
220 		rtnl_link_put(link);  in rtnl_link_veth_alloc()
224 	return link;  in rtnl_link_veth_alloc()
228  * Get the peer link of a veth link
230  * @return the peer link object.
232 struct rtnl_link *rtnl_link_veth_get_peer(struct rtnl_link *link)  in rtnl_link_veth_get_peer()  argument
234 	IS_VETH_LINK_ASSERT(link);  in rtnl_link_veth_get_peer()
235 	nl_object_get(OBJ_CAST(link->l_info));  in rtnl_link_veth_get_peer()
236 	return link->l_info;  in rtnl_link_veth_get_peer()
240  * Release a veth link and its peer
243 void rtnl_link_veth_release(struct rtnl_link *link)  in rtnl_link_veth_release()  argument
245 	veth_free(link);  in rtnl_link_veth_release()
246 	rtnl_link_put(link);  in rtnl_link_veth_release()
250  * Check if link is a veth link
251  * @arg link		Link object
253  * @return True if link is a veth link, otherwise false is returned.
255 int rtnl_link_is_veth(struct rtnl_link *link)  in rtnl_link_is_veth()  argument
257 	return link->l_info_ops && !strcmp(link->l_info_ops->io_name, "veth");  in rtnl_link_is_veth()
277 	struct rtnl_link *link, *peer;  in rtnl_link_veth_add()  local
280 	if (!(link = rtnl_link_veth_alloc()))  in rtnl_link_veth_add()
282 	peer = link->l_info;  in rtnl_link_veth_add()
285 		rtnl_link_set_name(link, name);  in rtnl_link_veth_add()
290 	err = rtnl_link_add(sock, link, NLM_F_CREATE | NLM_F_EXCL);  in rtnl_link_veth_add()
292 	rtnl_link_put(link);  in rtnl_link_veth_add()