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/*-
* 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.
*/
/*
* Generic netlink message header and attributes
*/
#ifndef _NETLINK_NETLINK_GENERIC_H_
#define _NETLINK_NETLINK_GENERIC_H_
#include <netlink/netlink.h>
/* Base header for all of the relevant messages */
struct genlmsghdr {
uint8_t cmd; /* CTRL_CMD_ */
uint8_t version; /* ABI version for the cmd */
uint16_t reserved; /* reserved: set to 0 */
};
#define GENL_HDRLEN NL_ITEM_ALIGN(sizeof(struct genlmsghdr))
/* Dynamic family number range, inclusive */
#define GENL_MIN_ID NLMSG_MIN_TYPE
#define GENL_MAX_ID 1023
/* Pre-defined family numbers */
#define GENL_ID_CTRL GENL_MIN_ID
/* Available commands */
enum {
CTRL_CMD_UNSPEC = 0,
CTRL_CMD_NEWFAMILY = 1,
CTRL_CMD_DELFAMILY = 2,
CTRL_CMD_GETFAMILY = 3, /* lists all (or matching) genetlink families */
CTRL_CMD_NEWOPS = 4,
CTRL_CMD_DELOPS = 5,
CTRL_CMD_GETOPS = 6,
CTRL_CMD_NEWMCAST_GRP = 7,
CTRL_CMD_DELMCAST_GRP = 8,
CTRL_CMD_GETMCAST_GRP = 9,
CTRL_CMD_GETPOLICY = 10,
__CTRL_CMD_MAX,
};
#define CTRL_CMD_MAX (__CTRL_CMD_MAX - 1)
/* Generic attributes */
enum {
CTRL_ATTR_UNSPEC,
CTRL_ATTR_FAMILY_ID = 1, /* u16, dynamically-assigned ID */
CTRL_ATTR_FAMILY_NAME = 2, /* string, family name */
CTRL_ATTR_VERSION = 3, /* u32, command version */
CTRL_ATTR_HDRSIZE = 4, /* u32, family header size */
CTRL_ATTR_MAXATTR = 5, /* u32, maximum family attr # */
CTRL_ATTR_OPS = 6, /* nested, available operations */
CTRL_ATTR_MCAST_GROUPS = 7,
CTRL_ATTR_POLICY = 8,
CTRL_ATTR_OP_POLICY = 9,
CTRL_ATTR_OP = 10,
__CTRL_ATTR_MAX,
};
#define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
#define GENL_NAMSIZ 16 /* max family name length including \0 */
/* CTRL_ATTR_OPS attributes */
enum {
CTRL_ATTR_OP_UNSPEC,
CTRL_ATTR_OP_ID = 1, /* u32, operation # */
CTRL_ATTR_OP_FLAGS = 2, /* u32, flags-based op description */
__CTRL_ATTR_OP_MAX,
};
#define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
/* CTRL_ATTR_OP_FLAGS values */
#define GENL_ADMIN_PERM 0x0001 /* Requires elevated permissions */
#define GENL_CMD_CAP_DO 0x0002 /* Operation is a modification request */
#define GENL_CMD_CAP_DUMP 0x0004 /* Operation is a get/dump request */
#define GENL_CMD_CAP_HASPOL 0x0008 /* Operation has a validation policy */
#define GENL_UNS_ADMIN_PERM 0x0010
/* CTRL_ATTR_MCAST_GROUPS attributes */
enum {
CTRL_ATTR_MCAST_GRP_UNSPEC,
CTRL_ATTR_MCAST_GRP_NAME, /* string, group name */
CTRL_ATTR_MCAST_GRP_ID, /* u32, dynamically-assigned group id */
__CTRL_ATTR_MCAST_GRP_MAX,
};
#define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1)
#endif
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