1 /* 2 * netlink/route/link/info-api.h Link Info API 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Lesser General Public 6 * License as published by the Free Software Foundation version 2.1 7 * of the License. 8 * 9 * Copyright (c) 2003-2008 Thomas Graf <tgraf (at) suug.ch> 10 */ 11 12 #ifndef NETLINK_LINK_INFO_API_H_ 13 #define NETLINK_LINK_INFO_API_H_ 14 15 #include <netlink/netlink.h> 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 /** 22 * @ingroup link_info 23 * 24 * Link info operations 25 */ 26 struct rtnl_link_info_ops 27 { 28 /** Name of operations, must match name on kernel side */ 29 char * io_name; 30 31 /** Reference count (internal, do not use) */ 32 int io_refcnt; 33 34 /** Called to assign an info type to a link. 35 * Has to allocate enough resources to hold attributes. Can 36 * use link->l_info to store a pointer. */ 37 int (*io_alloc)(struct rtnl_link *); 38 39 /** Called to parse the link info attribute. 40 * Must parse the attribute and assign all values to the link. 41 */ 42 int (*io_parse)(struct rtnl_link *, 43 struct nlattr *, 44 struct nlattr *); 45 46 /** Called when the link object is dumped. 47 * Must dump the info type specific attributes. */ 48 void (*io_dump[NL_DUMP_MAX+1])(struct rtnl_link *, 49 struct nl_dump_params *); 50 51 /** Called when a link object is cloned. 52 * Must clone all info type specific attributes. */ 53 int (*io_clone)(struct rtnl_link *, struct rtnl_link *); 54 55 /** Called when construction a link netlink message. 56 * Must append all info type specific attributes to the message. */ 57 int (*io_put_attrs)(struct nl_msg *, struct rtnl_link *); 58 59 /** Called to release all resources previously allocated 60 * in either io_alloc() or io_parse(). */ 61 void (*io_free)(struct rtnl_link *); 62 63 struct rtnl_link_info_ops * io_next; 64 }; 65 66 extern struct rtnl_link_info_ops *rtnl_link_info_ops_lookup(const char *); 67 68 extern int rtnl_link_register_info(struct rtnl_link_info_ops *); 69 extern int rtnl_link_unregister_info(struct rtnl_link_info_ops *); 70 71 #endif 72
