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sys/netlink/netlink_ctl.h
- This file was added.
| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
| * | |||||
| * Copyright (c) 2022 Alexander V. Chernikov <melifaro@FreeBSD.org> | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. Redistributions in binary form must reproduce the above copyright | |||||
| * notice, this list of conditions and the following disclaimer in the | |||||
| * documentation and/or other materials provided with the distribution. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
| * SUCH DAMAGE. | |||||
| */ | |||||
| #ifndef _NETLINK_NETLINK_CTL_H_ | |||||
| #define _NETLINK_NETLINK_CTL_H_ | |||||
| /* | |||||
| * This file provides headers for the public KPI of the netlink | |||||
| * subsystem | |||||
| */ | |||||
| MALLOC_DECLARE(M_NETLINK); | |||||
| /* | |||||
| * Macro for handling attribute TLVs | |||||
| */ | |||||
| #define _roundup2(x, y) (((x)+((y)-1))&(~((y)-1))) | |||||
| #define NETLINK_ALIGN_SIZE sizeof(uint32_t) | |||||
| #define NETLINK_ALIGN(_len) _roundup2(_len, NETLINK_ALIGN_SIZE) | |||||
| #define NLA_ALIGN_SIZE sizeof(uint32_t) | |||||
| #define NLA_ALIGN(_len) _roundup2(_len, NLA_ALIGN_SIZE) | |||||
| #define NLA_HDRLEN ((int)sizeof(struct nlattr)) | |||||
| #define NLA_DATA_LEN(_nla) ((int)((_nla)->nla_len - NLA_HDRLEN)) | |||||
| #define NLA_DATA(_nla) NL_ITEM_DATA(_nla, NLA_HDRLEN) | |||||
| #define NLA_DATA_CONST(_nla) NL_ITEM_DATA_CONST(_nla, NLA_HDRLEN) | |||||
| #define NLA_TYPE(_nla) ((_nla)->nla_type & 0x3FFF) | |||||
| #ifndef typeof | |||||
| #define typeof __typeof | |||||
| #endif | |||||
| #define NLA_NEXT(_attr) (struct nlattr *)((char *)_attr + NLA_ALIGN(_attr->nla_len)) | |||||
| #define _NLA_END(_start, _len) ((char *)(_start) + (_len)) | |||||
| #define NLA_FOREACH(_attr, _start, _len) \ | |||||
| for (typeof(_attr) _end = (typeof(_attr))_NLA_END(_start, _len), _attr = (_start); \ | |||||
| ((char *)_attr < (char *)_end) && \ | |||||
| ((char *)NLA_NEXT(_attr) <= (char *)_end); \ | |||||
| _attr = (_len -= NLA_ALIGN(_attr->nla_len), NLA_NEXT(_attr))) | |||||
| #define NL_ARRAY_LEN(_a) (sizeof(_a) / sizeof((_a)[0])) | |||||
| #include <netlink/netlink_message_writer.h> | |||||
| #include <netlink/netlink_message_parser.h> | |||||
| /* Protocol handlers */ | |||||
| struct nl_pstate; | |||||
| typedef int (*nl_handler_f)(struct nlmsghdr *hdr, struct nl_pstate *npt); | |||||
| bool netlink_register_proto(int proto, const char *proto_name, nl_handler_f handler); | |||||
| bool netlink_unregister_proto(int proto); | |||||
| /* Common helpers */ | |||||
| bool nl_has_listeners(int netlink_family, uint32_t groups_mask); | |||||
| bool nlp_has_priv(struct nlpcb *nlp, int priv); | |||||
| /* netlink_generic.c */ | |||||
| struct genl_cmd { | |||||
| const char *cmd_name; | |||||
| nl_handler_f cmd_cb; | |||||
| uint32_t cmd_flags; | |||||
| uint32_t cmd_priv; | |||||
| uint32_t cmd_num; | |||||
| }; | |||||
| uint32_t genl_register_family(const char *family_name, size_t hdrsize, | |||||
| int family_version, int max_attr_idx); | |||||
| bool genl_unregister_family(const char *family_name); | |||||
| bool genl_register_cmds(const char *family_name, const struct genl_cmd *cmds, | |||||
| int count); | |||||
| uint32_t genl_register_group(const char *family_name, const char *group_name); | |||||
| /* Debug */ | |||||
| uint32_t nlp_get_pid(const struct nlpcb *nlp); | |||||
| #endif | |||||