diff options
Diffstat (limited to 'package/libs/libnl-tiny/src/genl_mngt.c')
| -rw-r--r-- | package/libs/libnl-tiny/src/genl_mngt.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/package/libs/libnl-tiny/src/genl_mngt.c b/package/libs/libnl-tiny/src/genl_mngt.c deleted file mode 100644 index 246521f696..0000000000 --- a/package/libs/libnl-tiny/src/genl_mngt.c +++ /dev/null @@ -1,193 +0,0 @@ -/* - * lib/genl/mngt.c Generic Netlink Management - * - * 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 genl - * @defgroup genl_mngt Management - * - * @par 1) Registering a generic netlink module - * @code - * #include <netlink/genl/mngt.h> - * - * // First step is to define all the commands being used in - * // particular generic netlink family. The ID and name are - * // mandatory to be filled out. A callback function and - * // most the attribute policy that comes with it must be - * // defined for commands expected to be issued towards - * // userspace. - * static struct genl_cmd foo_cmds[] = { - * { - * .c_id = FOO_CMD_NEW, - * .c_name = "NEWFOO" , - * .c_maxattr = FOO_ATTR_MAX, - * .c_attr_policy = foo_policy, - * .c_msg_parser = foo_msg_parser, - * }, - * { - * .c_id = FOO_CMD_DEL, - * .c_name = "DELFOO" , - * }, - * }; - * - * // The list of commands must then be integrated into a - * // struct genl_ops serving as handle for this particular - * // family. - * static struct genl_ops my_genl_ops = { - * .o_cmds = foo_cmds, - * .o_ncmds = ARRAY_SIZE(foo_cmds), - * }; - * - * // Using the above struct genl_ops an arbitary number of - * // cache handles can be associated to it. - * // - * // The macro GENL_HDRSIZE() must be used to specify the - * // length of the header to automatically take headers on - * // generic layers into account. - * // - * // The macro GENL_FAMILY() is used to represent the generic - * // netlink family id. - * static struct nl_cache_ops genl_foo_ops = { - * .co_name = "genl/foo", - * .co_hdrsize = GENL_HDRSIZE(sizeof(struct my_hdr)), - * .co_msgtypes = GENL_FAMILY(GENL_ID_GENERATE, "foo"), - * .co_genl = &my_genl_ops, - * .co_protocol = NETLINK_GENERIC, - * .co_request_update = foo_request_update, - * .co_obj_ops = &genl_foo_ops, - * }; - * - * // Finally each cache handle for a generic netlink family - * // must be registered using genl_register(). - * static void __init foo_init(void) - * { - * genl_register(&genl_foo_ops); - * } - * - * // ... respectively unregsted again. - * static void __exit foo_exit(void) - * { - * genl_unregister(&genl_foo_ops); - * } - * @endcode - * @{ - */ - -#include <netlink-generic.h> -#include <netlink/netlink.h> -#include <netlink/genl/genl.h> -#include <netlink/genl/mngt.h> -#include <netlink/genl/family.h> -#include <netlink/genl/ctrl.h> -#include <netlink/utils.h> - -static NL_LIST_HEAD(genl_ops_list); - -static int genl_msg_parser(struct nl_cache_ops *ops, struct sockaddr_nl *who, - struct nlmsghdr *nlh, struct nl_parser_param *pp) -{ - int i, err; - struct genlmsghdr *ghdr; - struct genl_cmd *cmd; - - ghdr = nlmsg_data(nlh); - - if (ops->co_genl == NULL) - BUG(); - - for (i = 0; i < ops->co_genl->o_ncmds; i++) { - cmd = &ops->co_genl->o_cmds[i]; - if (cmd->c_id == ghdr->cmd) - goto found; - } - - err = -NLE_MSGTYPE_NOSUPPORT; - goto errout; - -found: - if (cmd->c_msg_parser == NULL) - err = -NLE_OPNOTSUPP; - else { - struct nlattr *tb[cmd->c_maxattr + 1]; - struct genl_info info = { - .who = who, - .nlh = nlh, - .genlhdr = ghdr, - .userhdr = genlmsg_data(ghdr), - .attrs = tb, - }; - - err = nlmsg_parse(nlh, ops->co_hdrsize, tb, cmd->c_maxattr, - cmd->c_attr_policy); - if (err < 0) - goto errout; - - err = cmd->c_msg_parser(ops, cmd, &info, pp); - } -errout: - return err; - -} - -/** - * @name Register/Unregister - * @{ - */ - -/** - * Register generic netlink operations - * @arg ops cache operations - */ -int genl_register(struct nl_cache_ops *ops) -{ - int err; - - if (ops->co_protocol != NETLINK_GENERIC) { - err = -NLE_PROTO_MISMATCH; - goto errout; - } - - if (ops->co_hdrsize < GENL_HDRSIZE(0)) { - err = -NLE_INVAL; - goto errout; - } - - if (ops->co_genl == NULL) { - err = -NLE_INVAL; - goto errout; - } - - ops->co_genl->o_cache_ops = ops; - ops->co_genl->o_name = ops->co_msgtypes[0].mt_name; - ops->co_genl->o_family = ops->co_msgtypes[0].mt_id; - ops->co_msg_parser = genl_msg_parser; - - /* FIXME: check for dup */ - - nl_list_add_tail(&ops->co_genl->o_list, &genl_ops_list); - - err = nl_cache_mngt_register(ops); -errout: - return err; -} - -/** - * Unregister generic netlink operations - * @arg ops cache operations - */ -void genl_unregister(struct nl_cache_ops *ops) -{ - nl_cache_mngt_unregister(ops); - nl_list_del(&ops->co_genl->o_list); -} - -/** @} */ - -/** @} */ |