411 lines
15 KiB
C
411 lines
15 KiB
C
/*
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* include/linux/tipc_config.h: Include file for TIPC configuration interface
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*
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* Copyright (c) 2003-2006, Ericsson AB
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* Copyright (c) 2005, Wind River Systems
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* All rights reserved.
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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 are met:
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*
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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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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_TIPC_CONFIG_H_
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#define _LINUX_TIPC_CONFIG_H_
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#include <linux/types.h>
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#include <linux/string.h>
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#include <asm/byteorder.h>
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/*
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* Configuration
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*
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* All configuration management messaging involves sending a request message
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* to the TIPC configuration service on a node, which sends a reply message
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* back. (In the future multi-message replies may be supported.)
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*
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* Both request and reply messages consist of a transport header and payload.
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* The transport header contains info about the desired operation;
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* the payload consists of zero or more type/length/value (TLV) items
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* which specify parameters or results for the operation.
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*
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* For many operations, the request and reply messages have a fixed number
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* of TLVs (usually zero or one); however, some reply messages may return
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* a variable number of TLVs. A failed request is denoted by the presence
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* of an "error string" TLV in the reply message instead of the TLV(s) the
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* reply should contain if the request succeeds.
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*/
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/*
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* Public commands:
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* May be issued by any process.
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* Accepted by own node, or by remote node only if remote management enabled.
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*/
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#define TIPC_CMD_NOOP 0x0000 /* tx none, rx none */
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#define TIPC_CMD_GET_NODES 0x0001 /* tx net_addr, rx node_info(s) */
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#define TIPC_CMD_GET_MEDIA_NAMES 0x0002 /* tx none, rx media_name(s) */
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#define TIPC_CMD_GET_BEARER_NAMES 0x0003 /* tx none, rx bearer_name(s) */
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#define TIPC_CMD_GET_LINKS 0x0004 /* tx net_addr, rx link_info(s) */
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#define TIPC_CMD_SHOW_NAME_TABLE 0x0005 /* tx name_tbl_query, rx ultra_string */
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#define TIPC_CMD_SHOW_PORTS 0x0006 /* tx none, rx ultra_string */
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#define TIPC_CMD_SHOW_LINK_STATS 0x000B /* tx link_name, rx ultra_string */
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#if 0
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#define TIPC_CMD_SHOW_PORT_STATS 0x0008 /* tx port_ref, rx ultra_string */
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#define TIPC_CMD_RESET_PORT_STATS 0x0009 /* tx port_ref, rx none */
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#define TIPC_CMD_GET_ROUTES 0x000A /* tx ?, rx ? */
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#define TIPC_CMD_GET_LINK_PEER 0x000D /* tx link_name, rx ? */
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#endif
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/*
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* Protected commands:
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* May only be issued by "network administration capable" process.
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* Accepted by own node, or by remote node only if remote management enabled
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* and this node is zone manager.
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*/
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#define TIPC_CMD_GET_REMOTE_MNG 0x4003 /* tx none, rx unsigned */
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#define TIPC_CMD_GET_MAX_PORTS 0x4004 /* tx none, rx unsigned */
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#define TIPC_CMD_GET_MAX_PUBL 0x4005 /* tx none, rx unsigned */
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#define TIPC_CMD_GET_MAX_SUBSCR 0x4006 /* tx none, rx unsigned */
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#define TIPC_CMD_GET_MAX_ZONES 0x4007 /* tx none, rx unsigned */
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#define TIPC_CMD_GET_MAX_CLUSTERS 0x4008 /* tx none, rx unsigned */
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#define TIPC_CMD_GET_MAX_NODES 0x4009 /* tx none, rx unsigned */
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#define TIPC_CMD_GET_MAX_SLAVES 0x400A /* tx none, rx unsigned */
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#define TIPC_CMD_GET_NETID 0x400B /* tx none, rx unsigned */
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#define TIPC_CMD_ENABLE_BEARER 0x4101 /* tx bearer_config, rx none */
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#define TIPC_CMD_DISABLE_BEARER 0x4102 /* tx bearer_name, rx none */
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#define TIPC_CMD_SET_LINK_TOL 0x4107 /* tx link_config, rx none */
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#define TIPC_CMD_SET_LINK_PRI 0x4108 /* tx link_config, rx none */
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#define TIPC_CMD_SET_LINK_WINDOW 0x4109 /* tx link_config, rx none */
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#define TIPC_CMD_SET_LOG_SIZE 0x410A /* tx unsigned, rx none */
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#define TIPC_CMD_DUMP_LOG 0x410B /* tx none, rx ultra_string */
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#define TIPC_CMD_RESET_LINK_STATS 0x410C /* tx link_name, rx none */
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#if 0
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#define TIPC_CMD_CREATE_LINK 0x4103 /* tx link_create, rx none */
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#define TIPC_CMD_REMOVE_LINK 0x4104 /* tx link_name, rx none */
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#define TIPC_CMD_BLOCK_LINK 0x4105 /* tx link_name, rx none */
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#define TIPC_CMD_UNBLOCK_LINK 0x4106 /* tx link_name, rx none */
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#endif
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/*
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* Private commands:
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* May only be issued by "network administration capable" process.
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* Accepted by own node only; cannot be used on a remote node.
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*/
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#define TIPC_CMD_SET_NODE_ADDR 0x8001 /* tx net_addr, rx none */
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#if 0
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#define TIPC_CMD_SET_ZONE_MASTER 0x8002 /* tx none, rx none */
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#endif
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#define TIPC_CMD_SET_REMOTE_MNG 0x8003 /* tx unsigned, rx none */
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#define TIPC_CMD_SET_MAX_PORTS 0x8004 /* tx unsigned, rx none */
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#define TIPC_CMD_SET_MAX_PUBL 0x8005 /* tx unsigned, rx none */
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#define TIPC_CMD_SET_MAX_SUBSCR 0x8006 /* tx unsigned, rx none */
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#define TIPC_CMD_SET_MAX_ZONES 0x8007 /* tx unsigned, rx none */
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#define TIPC_CMD_SET_MAX_CLUSTERS 0x8008 /* tx unsigned, rx none */
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#define TIPC_CMD_SET_MAX_NODES 0x8009 /* tx unsigned, rx none */
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#define TIPC_CMD_SET_MAX_SLAVES 0x800A /* tx unsigned, rx none */
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#define TIPC_CMD_SET_NETID 0x800B /* tx unsigned, rx none */
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/*
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* TLV types defined for TIPC
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*/
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#define TIPC_TLV_NONE 0 /* no TLV present */
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#define TIPC_TLV_VOID 1 /* empty TLV (0 data bytes)*/
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#define TIPC_TLV_UNSIGNED 2 /* 32-bit integer */
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#define TIPC_TLV_STRING 3 /* char[128] (max) */
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#define TIPC_TLV_LARGE_STRING 4 /* char[2048] (max) */
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#define TIPC_TLV_ULTRA_STRING 5 /* char[32768] (max) */
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#define TIPC_TLV_ERROR_STRING 16 /* char[128] containing "error code" */
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#define TIPC_TLV_NET_ADDR 17 /* 32-bit integer denoting <Z.C.N> */
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#define TIPC_TLV_MEDIA_NAME 18 /* char[TIPC_MAX_MEDIA_NAME] */
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#define TIPC_TLV_BEARER_NAME 19 /* char[TIPC_MAX_BEARER_NAME] */
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#define TIPC_TLV_LINK_NAME 20 /* char[TIPC_MAX_LINK_NAME] */
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#define TIPC_TLV_NODE_INFO 21 /* struct tipc_node_info */
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#define TIPC_TLV_LINK_INFO 22 /* struct tipc_link_info */
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#define TIPC_TLV_BEARER_CONFIG 23 /* struct tipc_bearer_config */
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#define TIPC_TLV_LINK_CONFIG 24 /* struct tipc_link_config */
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#define TIPC_TLV_NAME_TBL_QUERY 25 /* struct tipc_name_table_query */
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#define TIPC_TLV_PORT_REF 26 /* 32-bit port reference */
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/*
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* Maximum sizes of TIPC bearer-related names (including terminating NUL)
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*/
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#define TIPC_MAX_MEDIA_NAME 16 /* format = media */
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#define TIPC_MAX_IF_NAME 16 /* format = interface */
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#define TIPC_MAX_BEARER_NAME 32 /* format = media:interface */
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#define TIPC_MAX_LINK_NAME 60 /* format = Z.C.N:interface-Z.C.N:interface */
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/*
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* Link priority limits (min, default, max, media default)
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*/
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#define TIPC_MIN_LINK_PRI 0
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#define TIPC_DEF_LINK_PRI 10
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#define TIPC_MAX_LINK_PRI 31
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#define TIPC_MEDIA_LINK_PRI (TIPC_MAX_LINK_PRI + 1)
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/*
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* Link tolerance limits (min, default, max), in ms
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*/
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#define TIPC_MIN_LINK_TOL 50
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#define TIPC_DEF_LINK_TOL 1500
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#define TIPC_MAX_LINK_TOL 30000
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/*
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* Link window limits (min, default, max), in packets
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*/
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#define TIPC_MIN_LINK_WIN 16
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#define TIPC_DEF_LINK_WIN 50
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#define TIPC_MAX_LINK_WIN 150
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struct tipc_node_info {
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__u32 addr; /* network address of node */
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__u32 up; /* 0=down, 1= up */
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};
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struct tipc_link_info {
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__u32 dest; /* network address of peer node */
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__u32 up; /* 0=down, 1=up */
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char str[TIPC_MAX_LINK_NAME]; /* link name */
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};
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struct tipc_bearer_config {
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__u32 priority; /* Range [1,31]. Override per link */
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__u32 detect_scope;
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char name[TIPC_MAX_BEARER_NAME];
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};
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struct tipc_link_config {
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__u32 value;
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char name[TIPC_MAX_LINK_NAME];
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};
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#define TIPC_NTQ_ALLTYPES 0x80000000
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struct tipc_name_table_query {
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__u32 depth; /* 1:type, 2:+name info, 3:+port info, 4+:+debug info */
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__u32 type; /* {t,l,u} info ignored if high bit of "depth" is set */
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__u32 lowbound; /* (i.e. displays all entries of name table) */
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__u32 upbound;
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};
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/*
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* The error string TLV is a null-terminated string describing the cause
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* of the request failure. To simplify error processing (and to save space)
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* the first character of the string can be a special error code character
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* (lying by the range 0x80 to 0xFF) which represents a pre-defined reason.
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*/
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#define TIPC_CFG_TLV_ERROR "\x80" /* request contains incorrect TLV(s) */
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#define TIPC_CFG_NOT_NET_ADMIN "\x81" /* must be network administrator */
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#define TIPC_CFG_NOT_ZONE_MSTR "\x82" /* must be zone master */
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#define TIPC_CFG_NO_REMOTE "\x83" /* remote management not enabled */
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#define TIPC_CFG_NOT_SUPPORTED "\x84" /* request is not supported by TIPC */
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#define TIPC_CFG_INVALID_VALUE "\x85" /* request has invalid argument value */
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#if 0
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/* prototypes TLV structures for proposed commands */
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struct tipc_link_create {
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__u32 domain;
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struct tipc_media_addr peer_addr;
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char bearer_name[TIPC_MAX_BEARER_NAME];
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};
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struct tipc_route_info {
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__u32 dest;
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__u32 router;
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};
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#endif
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/*
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* A TLV consists of a descriptor, followed by the TLV value.
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* TLV descriptor fields are stored in network byte order;
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* TLV values must also be stored in network byte order (where applicable).
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* TLV descriptors must be aligned to addresses which are multiple of 4,
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* so up to 3 bytes of padding may exist at the end of the TLV value area.
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* There must not be any padding between the TLV descriptor and its value.
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*/
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struct tlv_desc {
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__u16 tlv_len; /* TLV length (descriptor + value) */
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__u16 tlv_type; /* TLV identifier */
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};
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#define TLV_ALIGNTO 4
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#define TLV_ALIGN(datalen) (((datalen)+(TLV_ALIGNTO-1)) & ~(TLV_ALIGNTO-1))
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#define TLV_LENGTH(datalen) (sizeof(struct tlv_desc) + (datalen))
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#define TLV_SPACE(datalen) (TLV_ALIGN(TLV_LENGTH(datalen)))
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#define TLV_DATA(tlv) ((void *)((char *)(tlv) + TLV_LENGTH(0)))
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static inline int TLV_OK(const void *tlv, __u16 space)
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{
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/*
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* Would also like to check that "tlv" is a multiple of 4,
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* but don't know how to do this in a portable way.
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* - Tried doing (!(tlv & (TLV_ALIGNTO-1))), but GCC compiler
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* won't allow binary "&" with a pointer.
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* - Tried casting "tlv" to integer type, but causes warning about size
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* mismatch when pointer is bigger than chosen type (int, long, ...).
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*/
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return (space >= TLV_SPACE(0)) &&
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(ntohs(((struct tlv_desc *)tlv)->tlv_len) <= space);
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}
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static inline int TLV_CHECK(const void *tlv, __u16 space, __u16 exp_type)
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{
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return TLV_OK(tlv, space) &&
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(ntohs(((struct tlv_desc *)tlv)->tlv_type) == exp_type);
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}
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static inline int TLV_SET(void *tlv, __u16 type, void *data, __u16 len)
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{
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struct tlv_desc *tlv_ptr;
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int tlv_len;
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tlv_len = TLV_LENGTH(len);
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tlv_ptr = (struct tlv_desc *)tlv;
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tlv_ptr->tlv_type = htons(type);
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tlv_ptr->tlv_len = htons(tlv_len);
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if (len && data)
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memcpy(TLV_DATA(tlv_ptr), data, tlv_len);
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return TLV_SPACE(len);
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}
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/*
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* A TLV list descriptor simplifies processing of messages
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* containing multiple TLVs.
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*/
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struct tlv_list_desc {
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struct tlv_desc *tlv_ptr; /* ptr to current TLV */
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__u32 tlv_space; /* # bytes from curr TLV to list end */
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};
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static inline void TLV_LIST_INIT(struct tlv_list_desc *list,
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void *data, __u32 space)
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{
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list->tlv_ptr = (struct tlv_desc *)data;
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list->tlv_space = space;
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}
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static inline int TLV_LIST_EMPTY(struct tlv_list_desc *list)
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{
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return (list->tlv_space == 0);
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}
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static inline int TLV_LIST_CHECK(struct tlv_list_desc *list, __u16 exp_type)
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{
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return TLV_CHECK(list->tlv_ptr, list->tlv_space, exp_type);
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}
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static inline void *TLV_LIST_DATA(struct tlv_list_desc *list)
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{
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return TLV_DATA(list->tlv_ptr);
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}
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static inline void TLV_LIST_STEP(struct tlv_list_desc *list)
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{
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__u16 tlv_space = TLV_ALIGN(ntohs(list->tlv_ptr->tlv_len));
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list->tlv_ptr = (struct tlv_desc *)((char *)list->tlv_ptr + tlv_space);
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list->tlv_space -= tlv_space;
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}
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/*
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* Configuration messages exchanged via NETLINK_GENERIC use the following
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* family id, name, version and command.
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*/
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#define TIPC_GENL_NAME "TIPC"
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#define TIPC_GENL_VERSION 0x1
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#define TIPC_GENL_CMD 0x1
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/*
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* TIPC specific header used in NETLINK_GENERIC requests.
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*/
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struct tipc_genlmsghdr {
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__u32 dest; /* Destination address */
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__u16 cmd; /* Command */
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__u16 reserved; /* Unused */
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};
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#define TIPC_GENL_HDRLEN NLMSG_ALIGN(sizeof(struct tipc_genlmsghdr))
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/*
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* Configuration messages exchanged via TIPC sockets use the TIPC configuration
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* message header, which is defined below. This structure is analogous
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* to the Netlink message header, but fields are stored in network byte order
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* and no padding is permitted between the header and the message data
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* that follows.
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*/
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struct tipc_cfg_msg_hdr
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{
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__u32 tcm_len; /* Message length (including header) */
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__u16 tcm_type; /* Command type */
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__u16 tcm_flags; /* Additional flags */
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char tcm_reserved[8]; /* Unused */
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};
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#define TCM_F_REQUEST 0x1 /* Flag: Request message */
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#define TCM_F_MORE 0x2 /* Flag: Message to be continued */
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#define TCM_ALIGN(datalen) (((datalen)+3) & ~3)
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#define TCM_LENGTH(datalen) (sizeof(struct tipc_cfg_msg_hdr) + datalen)
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#define TCM_SPACE(datalen) (TCM_ALIGN(TCM_LENGTH(datalen)))
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#define TCM_DATA(tcm_hdr) ((void *)((char *)(tcm_hdr) + TCM_LENGTH(0)))
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static inline int TCM_SET(void *msg, __u16 cmd, __u16 flags,
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void *data, __u16 data_len)
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{
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struct tipc_cfg_msg_hdr *tcm_hdr;
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int msg_len;
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msg_len = TCM_LENGTH(data_len);
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tcm_hdr = (struct tipc_cfg_msg_hdr *)msg;
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tcm_hdr->tcm_len = htonl(msg_len);
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tcm_hdr->tcm_type = htons(cmd);
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tcm_hdr->tcm_flags = htons(flags);
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if (data_len && data)
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memcpy(TCM_DATA(msg), data, data_len);
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return TCM_SPACE(data_len);
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}
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#endif
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