The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
130 lines
4.6 KiB
C
130 lines
4.6 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* 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_
|
|
|
|
#ifdef _KERNEL
|
|
/*
|
|
* This file provides headers for the public KPI of the netlink
|
|
* subsystem
|
|
*/
|
|
#include <sys/_eventhandler.h>
|
|
|
|
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);
|
|
struct ucred *nlp_get_cred(struct nlpcb *nlp);
|
|
uint32_t nlp_get_pid(const struct nlpcb *nlp);
|
|
bool nlp_unconstrained_vnet(const struct nlpcb *nlp);
|
|
|
|
/* 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);
|
|
|
|
struct genl_family;
|
|
const char *genl_get_family_name(const struct genl_family *gf);
|
|
uint32_t genl_get_family_id(const struct genl_family *gf);
|
|
|
|
typedef void (*genl_family_event_handler_t)(void *arg, const struct genl_family *gf, int action);
|
|
EVENTHANDLER_DECLARE(genl_family_event, genl_family_event_handler_t);
|
|
|
|
struct thread;
|
|
#if defined(NETLINK) || defined(NETLINK_MODULE)
|
|
/* Provide optimized calls to the functions inside the same linking unit */
|
|
struct nlpcb *_nl_get_thread_nlp(struct thread *td);
|
|
|
|
static inline struct nlpcb *
|
|
nl_get_thread_nlp(struct thread *td)
|
|
{
|
|
return (_nl_get_thread_nlp(td));
|
|
}
|
|
|
|
#else
|
|
/* Provide access to the functions via netlink_glue.c */
|
|
struct nlpcb *nl_get_thread_nlp(struct thread *td);
|
|
|
|
#endif /* defined(NETLINK) || defined(NETLINK_MODULE) */
|
|
|
|
#endif
|
|
#endif
|