| /* |
| * lib/route/link/api.c Link Info API |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation version 2.1 |
| * of the License. |
| * |
| * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch> |
| */ |
| |
| /** |
| * @ingroup link |
| * @defgroup link_info Link Info API |
| * @brief |
| * |
| * @par 1) Registering/Unregistering a new link info type |
| * @code |
| * static struct rtnl_link_info_ops vlan_info_ops = { |
| * .io_name = "vlan", |
| * .io_alloc = vlan_alloc, |
| * .io_parse = vlan_parse, |
| * .io_dump[NL_DUMP_BRIEF] = vlan_dump_brief, |
| * .io_dump[NL_DUMP_FULL] = vlan_dump_full, |
| * .io_free = vlan_free, |
| * }; |
| * |
| * static void __init vlan_init(void) |
| * { |
| * rtnl_link_register_info(&vlan_info_ops); |
| * } |
| * |
| * static void __exit vlan_exit(void) |
| * { |
| * rtnl_link_unregister_info(&vlan_info_ops); |
| * } |
| * @endcode |
| * |
| * @{ |
| */ |
| |
| #include <netlink-local.h> |
| #include <netlink/netlink.h> |
| #include <netlink/utils.h> |
| #include <netlink/route/link.h> |
| #include <netlink/route/link/info-api.h> |
| |
| static struct rtnl_link_info_ops *info_ops; |
| |
| struct rtnl_link_info_ops *rtnl_link_info_ops_lookup(const char *name) |
| { |
| struct rtnl_link_info_ops *ops; |
| |
| for (ops = info_ops; ops; ops = ops->io_next) |
| if (!strcmp(ops->io_name, name)) |
| return ops; |
| |
| return NULL; |
| } |
| |
| int rtnl_link_register_info(struct rtnl_link_info_ops *ops) |
| { |
| if (ops->io_name == NULL) |
| return -NLE_INVAL; |
| |
| if (rtnl_link_info_ops_lookup(ops->io_name)) |
| return -NLE_EXIST; |
| |
| NL_DBG(1, "Registered link info operations %s\n", ops->io_name); |
| |
| ops->io_next = info_ops; |
| info_ops = ops; |
| |
| return 0; |
| } |
| |
| int rtnl_link_unregister_info(struct rtnl_link_info_ops *ops) |
| { |
| struct rtnl_link_info_ops *t, **tp; |
| |
| for (tp = &info_ops; (t=*tp) != NULL; tp = &t->io_next) |
| if (t == ops) |
| break; |
| |
| if (!t) |
| return -NLE_OPNOTSUPP; |
| |
| if (t->io_refcnt > 0) |
| return -NLE_BUSY; |
| |
| NL_DBG(1, "Unregistered link info perations %s\n", ops->io_name); |
| |
| *tp = t->io_next; |
| return 0; |
| } |
| |
| /** @} */ |
| |