diff options
Diffstat (limited to 'package/libs/libnl-tiny/src/genl_ctrl.c')
| -rw-r--r-- | package/libs/libnl-tiny/src/genl_ctrl.c | 380 |
1 files changed, 0 insertions, 380 deletions
diff --git a/package/libs/libnl-tiny/src/genl_ctrl.c b/package/libs/libnl-tiny/src/genl_ctrl.c deleted file mode 100644 index 0045459b2f..0000000000 --- a/package/libs/libnl-tiny/src/genl_ctrl.c +++ /dev/null @@ -1,380 +0,0 @@ -/* - * lib/genl/ctrl.c Generic Netlink Controller - * - * 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_mngt - * @defgroup ctrl Controller - * @brief - * - * @{ - */ - -#include <netlink-generic.h> -#include <netlink/netlink.h> -#include <netlink/genl/genl.h> -#include <netlink/genl/family.h> -#include <netlink/genl/mngt.h> -#include <netlink/genl/ctrl.h> -#include <netlink/utils.h> - -/** @cond SKIP */ -#define CTRL_VERSION 0x0001 - -static struct nl_cache_ops genl_ctrl_ops; -/** @endcond */ - -static int ctrl_request_update(struct nl_cache *c, struct nl_sock *h) -{ - return genl_send_simple(h, GENL_ID_CTRL, CTRL_CMD_GETFAMILY, - CTRL_VERSION, NLM_F_DUMP); -} - -static struct nla_policy ctrl_policy[CTRL_ATTR_MAX+1] = { - [CTRL_ATTR_FAMILY_ID] = { .type = NLA_U16 }, - [CTRL_ATTR_FAMILY_NAME] = { .type = NLA_STRING, - .maxlen = GENL_NAMSIZ }, - [CTRL_ATTR_VERSION] = { .type = NLA_U32 }, - [CTRL_ATTR_HDRSIZE] = { .type = NLA_U32 }, - [CTRL_ATTR_MAXATTR] = { .type = NLA_U32 }, - [CTRL_ATTR_OPS] = { .type = NLA_NESTED }, - [CTRL_ATTR_MCAST_GROUPS] = { .type = NLA_NESTED }, -}; - -static struct nla_policy family_op_policy[CTRL_ATTR_OP_MAX+1] = { - [CTRL_ATTR_OP_ID] = { .type = NLA_U32 }, - [CTRL_ATTR_OP_FLAGS] = { .type = NLA_U32 }, -}; - -static struct nla_policy family_grp_policy[CTRL_ATTR_MCAST_GRP_MAX+1] = { - [CTRL_ATTR_MCAST_GRP_NAME] = { .type = NLA_STRING }, - [CTRL_ATTR_MCAST_GRP_ID] = { .type = NLA_U32 }, -}; - -static int ctrl_msg_parser(struct nl_cache_ops *ops, struct genl_cmd *cmd, - struct genl_info *info, void *arg) -{ - struct genl_family *family; - struct nl_parser_param *pp = arg; - int err; - - family = genl_family_alloc(); - if (family == NULL) { - err = -NLE_NOMEM; - goto errout; - } - - if (info->attrs[CTRL_ATTR_FAMILY_NAME] == NULL) { - err = -NLE_MISSING_ATTR; - goto errout; - } - - if (info->attrs[CTRL_ATTR_FAMILY_ID] == NULL) { - err = -NLE_MISSING_ATTR; - goto errout; - } - - family->ce_msgtype = info->nlh->nlmsg_type; - genl_family_set_id(family, - nla_get_u16(info->attrs[CTRL_ATTR_FAMILY_ID])); - genl_family_set_name(family, - nla_get_string(info->attrs[CTRL_ATTR_FAMILY_NAME])); - - if (info->attrs[CTRL_ATTR_VERSION]) { - uint32_t version = nla_get_u32(info->attrs[CTRL_ATTR_VERSION]); - genl_family_set_version(family, version); - } - - if (info->attrs[CTRL_ATTR_HDRSIZE]) { - uint32_t hdrsize = nla_get_u32(info->attrs[CTRL_ATTR_HDRSIZE]); - genl_family_set_hdrsize(family, hdrsize); - } - - if (info->attrs[CTRL_ATTR_MAXATTR]) { - uint32_t maxattr = nla_get_u32(info->attrs[CTRL_ATTR_MAXATTR]); - genl_family_set_maxattr(family, maxattr); - } - - if (info->attrs[CTRL_ATTR_OPS]) { - struct nlattr *nla, *nla_ops; - int remaining; - - nla_ops = info->attrs[CTRL_ATTR_OPS]; - nla_for_each_nested(nla, nla_ops, remaining) { - struct nlattr *tb[CTRL_ATTR_OP_MAX+1]; - int flags = 0, id; - - err = nla_parse_nested(tb, CTRL_ATTR_OP_MAX, nla, - family_op_policy); - if (err < 0) - goto errout; - - if (tb[CTRL_ATTR_OP_ID] == NULL) { - err = -NLE_MISSING_ATTR; - goto errout; - } - - id = nla_get_u32(tb[CTRL_ATTR_OP_ID]); - - if (tb[CTRL_ATTR_OP_FLAGS]) - flags = nla_get_u32(tb[CTRL_ATTR_OP_FLAGS]); - - err = genl_family_add_op(family, id, flags); - if (err < 0) - goto errout; - - } - } - - if (info->attrs[CTRL_ATTR_MCAST_GROUPS]) { - struct nlattr *nla, *nla_grps; - int remaining; - - nla_grps = info->attrs[CTRL_ATTR_MCAST_GROUPS]; - nla_for_each_nested(nla, nla_grps, remaining) { - struct nlattr *tb[CTRL_ATTR_MCAST_GRP_MAX+1]; - int id; - const char * name; - - err = nla_parse_nested(tb, CTRL_ATTR_MCAST_GRP_MAX, nla, - family_grp_policy); - if (err < 0) - goto errout; - - if (tb[CTRL_ATTR_MCAST_GRP_ID] == NULL) { - err = -NLE_MISSING_ATTR; - goto errout; - } - id = nla_get_u32(tb[CTRL_ATTR_MCAST_GRP_ID]); - - if (tb[CTRL_ATTR_MCAST_GRP_NAME] == NULL) { - err = -NLE_MISSING_ATTR; - goto errout; - } - name = nla_get_string(tb[CTRL_ATTR_MCAST_GRP_NAME]); - - err = genl_family_add_grp(family, id, name); - if (err < 0) - goto errout; - } - - } - - err = pp->pp_cb((struct nl_object *) family, pp); -errout: - genl_family_put(family); - return err; -} - -/** - * @name Cache Management - * @{ - */ - -int genl_ctrl_alloc_cache(struct nl_sock *sock, struct nl_cache **result) -{ - return nl_cache_alloc_and_fill(&genl_ctrl_ops, sock, result); -} - -/** - * Look up generic netlink family by id in the provided cache. - * @arg cache Generic netlink family cache. - * @arg id Family identifier. - * - * Searches through the cache looking for a registered family - * matching the specified identifier. The caller will own a - * reference on the returned object which needs to be given - * back after usage using genl_family_put(). - * - * @return Generic netlink family object or NULL if no match was found. - */ -struct genl_family *genl_ctrl_search(struct nl_cache *cache, int id) -{ - struct genl_family *fam; - - if (cache->c_ops != &genl_ctrl_ops) - BUG(); - - nl_list_for_each_entry(fam, &cache->c_items, ce_list) { - if (fam->gf_id == id) { - nl_object_get((struct nl_object *) fam); - return fam; - } - } - - return NULL; -} - -/** - * @name Resolver - * @{ - */ - -/** - * Look up generic netlink family by family name in the provided cache. - * @arg cache Generic netlink family cache. - * @arg name Family name. - * - * Searches through the cache looking for a registered family - * matching the specified name. The caller will own a reference - * on the returned object which needs to be given back after - * usage using genl_family_put(). - * - * @return Generic netlink family object or NULL if no match was found. - */ -struct genl_family *genl_ctrl_search_by_name(struct nl_cache *cache, - const char *name) -{ - struct genl_family *fam; - - if (cache->c_ops != &genl_ctrl_ops) - BUG(); - - nl_list_for_each_entry(fam, &cache->c_items, ce_list) { - if (!strcmp(name, fam->gf_name)) { - nl_object_get((struct nl_object *) fam); - return fam; - } - } - - return NULL; -} - -/** @} */ - -/** - * Resolve generic netlink family name to its identifier - * @arg sk Netlink socket. - * @arg name Name of generic netlink family - * - * Resolves the generic netlink family name to its identifer and returns - * it. - * - * @return A positive identifier or a negative error code. - */ -int genl_ctrl_resolve(struct nl_sock *sk, const char *name) -{ - struct nl_cache *cache; - struct genl_family *family; - int err; - - if ((err = genl_ctrl_alloc_cache(sk, &cache)) < 0) - return err; - - family = genl_ctrl_search_by_name(cache, name); - if (family == NULL) { - err = -NLE_OBJ_NOTFOUND; - goto errout; - } - - err = genl_family_get_id(family); - genl_family_put(family); -errout: - nl_cache_free(cache); - - return err; -} - -static int genl_ctrl_grp_by_name(const struct genl_family *family, - const char *grp_name) -{ - struct genl_family_grp *grp; - - nl_list_for_each_entry(grp, &family->gf_mc_grps, list) { - if (!strcmp(grp->name, grp_name)) { - return grp->id; - } - } - - return -NLE_OBJ_NOTFOUND; -} - -int genl_ctrl_resolve_grp(struct nl_sock *sk, const char *family_name, - const char *grp_name) -{ - struct nl_cache *cache; - struct genl_family *family; - int err; - - if ((err = genl_ctrl_alloc_cache(sk, &cache)) < 0) - return err; - - family = genl_ctrl_search_by_name(cache, family_name); - if (family == NULL) { - err = -NLE_OBJ_NOTFOUND; - goto errout; - } - - err = genl_ctrl_grp_by_name(family, grp_name); - genl_family_put(family); -errout: - nl_cache_free(cache); - - return err; -} - -/** @} */ - -static struct genl_cmd genl_cmds[] = { - { - .c_id = CTRL_CMD_NEWFAMILY, - .c_name = "NEWFAMILY" , - .c_maxattr = CTRL_ATTR_MAX, - .c_attr_policy = ctrl_policy, - .c_msg_parser = ctrl_msg_parser, - }, - { - .c_id = CTRL_CMD_DELFAMILY, - .c_name = "DELFAMILY" , - }, - { - .c_id = CTRL_CMD_GETFAMILY, - .c_name = "GETFAMILY" , - }, - { - .c_id = CTRL_CMD_NEWOPS, - .c_name = "NEWOPS" , - }, - { - .c_id = CTRL_CMD_DELOPS, - .c_name = "DELOPS" , - }, -}; - -static struct genl_ops genl_ops = { - .o_cmds = genl_cmds, - .o_ncmds = ARRAY_SIZE(genl_cmds), -}; - -/** @cond SKIP */ -extern struct nl_object_ops genl_family_ops; -/** @endcond */ - -static struct nl_cache_ops genl_ctrl_ops = { - .co_name = "genl/family", - .co_hdrsize = GENL_HDRSIZE(0), - .co_msgtypes = GENL_FAMILY(GENL_ID_CTRL, "nlctrl"), - .co_genl = &genl_ops, - .co_protocol = NETLINK_GENERIC, - .co_request_update = ctrl_request_update, - .co_obj_ops = &genl_family_ops, -}; - -static void __init ctrl_init(void) -{ - genl_register(&genl_ctrl_ops); -} - -static void __exit ctrl_exit(void) -{ - genl_unregister(&genl_ctrl_ops); -} - -/** @} */ |