115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2022 Alexander V. Chernikov <melifaro@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Generic netlink message header and attributes
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*/
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#ifndef _NETLINK_NETLINK_GENERIC_H_
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#define _NETLINK_NETLINK_GENERIC_H_
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#include <netlink/netlink.h>
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/* Base header for all of the relevant messages */
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struct genlmsghdr {
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uint8_t cmd; /* CTRL_CMD_ */
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uint8_t version; /* ABI version for the cmd */
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uint16_t reserved; /* reserved: set to 0 */
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};
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#define GENL_HDRLEN NL_ITEM_ALIGN(sizeof(struct genlmsghdr))
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/* Dynamic family number range, inclusive */
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#define GENL_MIN_ID NLMSG_MIN_TYPE
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#define GENL_MAX_ID 1023
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/* Pre-defined family numbers */
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#define GENL_ID_CTRL GENL_MIN_ID
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/* Available commands */
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enum {
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CTRL_CMD_UNSPEC = 0,
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CTRL_CMD_NEWFAMILY = 1,
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CTRL_CMD_DELFAMILY = 2,
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CTRL_CMD_GETFAMILY = 3, /* lists all (or matching) genetlink families */
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CTRL_CMD_NEWOPS = 4,
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CTRL_CMD_DELOPS = 5,
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CTRL_CMD_GETOPS = 6,
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CTRL_CMD_NEWMCAST_GRP = 7,
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CTRL_CMD_DELMCAST_GRP = 8,
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CTRL_CMD_GETMCAST_GRP = 9,
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CTRL_CMD_GETPOLICY = 10,
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__CTRL_CMD_MAX,
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};
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#define CTRL_CMD_MAX (__CTRL_CMD_MAX - 1)
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/* Generic attributes */
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enum {
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CTRL_ATTR_UNSPEC,
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CTRL_ATTR_FAMILY_ID = 1, /* u16, dynamically-assigned ID */
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CTRL_ATTR_FAMILY_NAME = 2, /* string, family name */
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CTRL_ATTR_VERSION = 3, /* u32, command version */
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CTRL_ATTR_HDRSIZE = 4, /* u32, family header size */
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CTRL_ATTR_MAXATTR = 5, /* u32, maximum family attr # */
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CTRL_ATTR_OPS = 6, /* nested, available operations */
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CTRL_ATTR_MCAST_GROUPS = 7,
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CTRL_ATTR_POLICY = 8,
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CTRL_ATTR_OP_POLICY = 9,
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CTRL_ATTR_OP = 10,
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__CTRL_ATTR_MAX,
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};
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#define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
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#define GENL_NAMSIZ 16 /* max family name length including \0 */
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/* CTRL_ATTR_OPS attributes */
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enum {
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CTRL_ATTR_OP_UNSPEC,
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CTRL_ATTR_OP_ID = 1, /* u32, operation # */
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CTRL_ATTR_OP_FLAGS = 2, /* u32, flags-based op description */
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__CTRL_ATTR_OP_MAX,
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};
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#define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
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/* CTRL_ATTR_OP_FLAGS values */
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#define GENL_ADMIN_PERM 0x0001 /* Requires elevated permissions */
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#define GENL_CMD_CAP_DO 0x0002 /* Operation is a modification request */
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#define GENL_CMD_CAP_DUMP 0x0004 /* Operation is a get/dump request */
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#define GENL_CMD_CAP_HASPOL 0x0008 /* Operation has a validation policy */
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#define GENL_UNS_ADMIN_PERM 0x0010
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/* CTRL_ATTR_MCAST_GROUPS attributes */
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enum {
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CTRL_ATTR_MCAST_GRP_UNSPEC,
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CTRL_ATTR_MCAST_GRP_NAME, /* string, group name */
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CTRL_ATTR_MCAST_GRP_ID, /* u32, dynamically-assigned group id */
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__CTRL_ATTR_MCAST_GRP_MAX,
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};
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#define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1)
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#endif
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