/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
* include / uapi / linux / tipc_config . h : Header for TIPC configuration interface
*
* Copyright ( c ) 2003 - 2006 , Ericsson AB
* Copyright ( c ) 2005 - 2007 , 2010 - 2011 , Wind River Systems
* All rights reserved .
*
* 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 .
* 3 . Neither the names of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission .
*
* Alternatively , this software may be distributed under the terms of the
* GNU General Public License ( " GPL " ) version 2 as published by the Free
* Software Foundation .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 _LINUX_TIPC_CONFIG_H_
#define _LINUX_TIPC_CONFIG_H_
#include <linux/types.h>
#include <linux/string.h>
#include <linux/tipc.h>
#include <asm /byteorder.h>
/*
* Configuration
*
* All configuration management messaging involves sending a request message
* to the TIPC configuration service on a node , which sends a reply message
* back . ( In the future multi - message replies may be supported . )
*
* Both request and reply messages consist of a transport header and payload .
* The transport header contains info about the desired operation ;
* the payload consists of zero or more type / length / value ( TLV ) items
* which specify parameters or results for the operation .
*
* For many operations , the request and reply messages have a fixed number
* of TLVs ( usually zero or one ) ; however , some reply messages may return
* a variable number of TLVs . A failed request is denoted by the presence
* of an " error string " TLV in the reply message instead of the TLV ( s ) the
* reply should contain if the request succeeds .
*/
/*
* Public commands :
* May be issued by any process .
* Accepted by own node , or by remote node only if remote management enabled .
*/
#define TIPC_CMD_NOOP 0 x0000 /* tx none, rx none */
#define TIPC_CMD_GET_NODES 0 x0001 /* tx net_addr, rx node_info(s) */
#define TIPC_CMD_GET_MEDIA_NAMES 0 x0002 /* tx none, rx media_name(s) */
#define TIPC_CMD_GET_BEARER_NAMES 0 x0003 /* tx none, rx bearer_name(s) */
#define TIPC_CMD_GET_LINKS 0 x0004 /* tx net_addr, rx link_info(s) */
#define TIPC_CMD_SHOW_NAME_TABLE 0 x0005 /* tx name_tbl_query, rx ultra_string */
#define TIPC_CMD_SHOW_PORTS 0 x0006 /* tx none, rx ultra_string */
#define TIPC_CMD_SHOW_LINK_STATS 0 x000B /* tx link_name, rx ultra_string */
#define TIPC_CMD_SHOW_STATS 0 x000F /* tx unsigned, rx ultra_string */
/*
* Protected commands :
* May only be issued by " network administration capable " process .
* Accepted by own node , or by remote node only if remote management enabled
* and this node is zone manager .
*/
#define TIPC_CMD_GET_REMOTE_MNG 0 x4003 /* tx none, rx unsigned */
#define TIPC_CMD_GET_MAX_PORTS 0 x4004 /* tx none, rx unsigned */
#define TIPC_CMD_GET_MAX_PUBL 0 x4005 /* obsoleted */
#define TIPC_CMD_GET_MAX_SUBSCR 0 x4006 /* obsoleted */
#define TIPC_CMD_GET_MAX_ZONES 0 x4007 /* obsoleted */
#define TIPC_CMD_GET_MAX_CLUSTERS 0 x4008 /* obsoleted */
#define TIPC_CMD_GET_MAX_NODES 0 x4009 /* obsoleted */
#define TIPC_CMD_GET_MAX_SLAVES 0 x400A /* obsoleted */
#define TIPC_CMD_GET_NETID 0 x400B /* tx none, rx unsigned */
#define TIPC_CMD_ENABLE_BEARER 0 x4101 /* tx bearer_config, rx none */
#define TIPC_CMD_DISABLE_BEARER 0 x4102 /* tx bearer_name, rx none */
#define TIPC_CMD_SET_LINK_TOL 0 x4107 /* tx link_config, rx none */
#define TIPC_CMD_SET_LINK_PRI 0 x4108 /* tx link_config, rx none */
#define TIPC_CMD_SET_LINK_WINDOW 0 x4109 /* tx link_config, rx none */
#define TIPC_CMD_SET_LOG_SIZE 0 x410A /* obsoleted */
#define TIPC_CMD_DUMP_LOG 0 x410B /* obsoleted */
#define TIPC_CMD_RESET_LINK_STATS 0 x410C /* tx link_name, rx none */
/*
* Private commands :
* May only be issued by " network administration capable " process .
* Accepted by own node only ; cannot be used on a remote node .
*/
#define TIPC_CMD_SET_NODE_ADDR 0 x8001 /* tx net_addr, rx none */
#define TIPC_CMD_SET_REMOTE_MNG 0 x8003 /* tx unsigned, rx none */
#define TIPC_CMD_SET_MAX_PORTS 0 x8004 /* tx unsigned, rx none */
#define TIPC_CMD_SET_MAX_PUBL 0 x8005 /* obsoleted */
#define TIPC_CMD_SET_MAX_SUBSCR 0 x8006 /* obsoleted */
#define TIPC_CMD_SET_MAX_ZONES 0 x8007 /* obsoleted */
#define TIPC_CMD_SET_MAX_CLUSTERS 0 x8008 /* obsoleted */
#define TIPC_CMD_SET_MAX_NODES 0 x8009 /* obsoleted */
#define TIPC_CMD_SET_MAX_SLAVES 0 x800A /* obsoleted */
#define TIPC_CMD_SET_NETID 0 x800B /* tx unsigned, rx none */
/*
* Reserved commands :
* May not be issued by any process .
* Used internally by TIPC .
*/
#define TIPC_CMD_NOT_NET_ADMIN 0 xC001 /* tx none, rx none */
/*
* TLV types defined for TIPC
*/
#define TIPC_TLV_NONE 0 /* no TLV present */
#define TIPC_TLV_VOID 1 /* empty TLV (0 data bytes)*/
#define TIPC_TLV_UNSIGNED 2 /* 32-bit integer */
#define TIPC_TLV_STRING 3 /* char[128] (max) */
#define TIPC_TLV_LARGE_STRING 4 /* char[2048] (max) */
#define TIPC_TLV_ULTRA_STRING 5 /* char[32768] (max) */
#define TIPC_TLV_ERROR_STRING 16 /* char[128] containing "error code" */
#define TIPC_TLV_NET_ADDR 17 /* 32-bit integer denoting <Z.C.N> */
#define TIPC_TLV_MEDIA_NAME 18 /* char[TIPC_MAX_MEDIA_NAME] */
#define TIPC_TLV_BEARER_NAME 19 /* char[TIPC_MAX_BEARER_NAME] */
#define TIPC_TLV_LINK_NAME 20 /* char[TIPC_MAX_LINK_NAME] */
#define TIPC_TLV_NODE_INFO 21 /* struct tipc_node_info */
#define TIPC_TLV_LINK_INFO 22 /* struct tipc_link_info */
#define TIPC_TLV_BEARER_CONFIG 23 /* struct tipc_bearer_config */
#define TIPC_TLV_LINK_CONFIG 24 /* struct tipc_link_config */
#define TIPC_TLV_NAME_TBL_QUERY 25 /* struct tipc_name_table_query */
#define TIPC_TLV_PORT_REF 26 /* 32-bit port reference */
/*
* Link priority limits ( min , default , max , media default )
*/
#define TIPC_MIN_LINK_PRI 0
#define TIPC_DEF_LINK_PRI 10
#define TIPC_MAX_LINK_PRI 31
#define TIPC_MEDIA_LINK_PRI (TIPC_MAX_LINK_PRI + 1 )
/*
* Link tolerance limits ( min , default , max ) , in ms
*/
#define TIPC_MIN_LINK_TOL 50
#define TIPC_DEF_LINK_TOL 1500
#define TIPC_MAX_LINK_TOL 30000
#if (TIPC_MIN_LINK_TOL < 16 )
#error "TIPC_MIN_LINK_TOL is too small (abort limit may be NaN)"
#endif
/*
* Link window limits ( min , default , max ) , in packets
*/
#define TIPC_MIN_LINK_WIN 16
#define TIPC_DEF_LINK_WIN 50
#define TIPC_MAX_LINK_WIN 8191
/*
* Default MTU for UDP media
*/
#define TIPC_DEF_LINK_UDP_MTU 14000
struct tipc_node_info {
__be32 addr; /* network address of node */
__be32 up; /* 0=down, 1= up */
};
struct tipc_link_info {
__be32 dest; /* network address of peer node */
__be32 up; /* 0=down, 1=up */
char str[TIPC_MAX_LINK_NAME]; /* link name */
};
struct tipc_bearer_config {
__be32 priority; /* Range [1,31]. Override per link */
__be32 disc_domain; /* <Z.C.N> describing desired nodes */
char name[TIPC_MAX_BEARER_NAME];
};
struct tipc_link_config {
__be32 value;
char name[TIPC_MAX_LINK_NAME];
};
#define TIPC_NTQ_ALLTYPES 0 x80000000
struct tipc_name_table_query {
__be32 depth; /* 1:type, 2:+name info, 3:+port info, 4+:+debug info */
__be32 type; /* {t,l,u} info ignored if high bit of "depth" is set */
__be32 lowbound; /* (i.e. displays all entries of name table) */
__be32 upbound;
};
/*
* The error string TLV is a null - terminated string describing the cause
* of the request failure . To simplify error processing ( and to save space )
* the first character of the string can be a special error code character
* ( lying by the range 0 x80 to 0 xFF ) which represents a pre - defined reason .
*/
#define TIPC_CFG_TLV_ERROR "\x80" /* request contains incorrect TLV(s) */
#define TIPC_CFG_NOT_NET_ADMIN "\x81" /* must be network administrator */
#define TIPC_CFG_NOT_ZONE_MSTR "\x82" /* must be zone master */
#define TIPC_CFG_NO_REMOTE "\x83" /* remote management not enabled */
#define TIPC_CFG_NOT_SUPPORTED "\x84" /* request is not supported by TIPC */
#define TIPC_CFG_INVALID_VALUE "\x85" /* request has invalid argument value */
/*
* A TLV consists of a descriptor , followed by the TLV value .
* TLV descriptor fields are stored in network byte order ;
* TLV values must also be stored in network byte order ( where applicable ) .
* TLV descriptors must be aligned to addresses which are multiple of 4 ,
* so up to 3 bytes of padding may exist at the end of the TLV value area .
* There must not be any padding between the TLV descriptor and its value .
*/
struct tlv_desc {
__be16 tlv_len; /* TLV length (descriptor + value) */
__be16 tlv_type; /* TLV identifier */
};
#define TLV_ALIGNTO 4
#define TLV_ALIGN(datalen) (((datalen)+(TLV_ALIGNTO-1 )) & ~(TLV_ALIGNTO-1 ))
#define TLV_LENGTH(datalen) (sizeof (struct tlv_desc) + (datalen))
#define TLV_SPACE(datalen) (TLV_ALIGN(TLV_LENGTH(datalen)))
#define TLV_DATA(tlv) ((void *)((char *)(tlv) + TLV_LENGTH(0 )))
static inline int TLV_OK(const void *tlv, __u16 space)
{
/*
* Would also like to check that " tlv " is a multiple of 4 ,
* but don ' t know how to do this in a portable way .
* - Tried doing ( ! ( tlv & ( TLV_ALIGNTO - 1 ) ) ) , but GCC compiler
* won ' t allow binary " & " with a pointer .
* - Tried casting " tlv " to integer type , but causes warning about size
* mismatch when pointer is bigger than chosen type ( int , long , . . . ) .
*/
return (space >= TLV_SPACE(0 )) &&
(__be16_to_cpu(((struct tlv_desc *)tlv)->tlv_len) <= space);
}
static inline int TLV_CHECK(const void *tlv, __u16 space, __u16 exp_type)
{
return TLV_OK(tlv, space) &&
(__be16_to_cpu(((struct tlv_desc *)tlv)->tlv_type) == exp_type);
}
static inline int TLV_GET_LEN(struct tlv_desc *tlv)
{
return __be16_to_cpu(tlv->tlv_len);
}
static inline void TLV_SET_LEN(struct tlv_desc *tlv, __u16 len)
{
tlv->tlv_len = __cpu_to_be16(len);
}
static inline int TLV_CHECK_TYPE(struct tlv_desc *tlv, __u16 type)
{
return (__be16_to_cpu(tlv->tlv_type) == type);
}
static inline void TLV_SET_TYPE(struct tlv_desc *tlv, __u16 type)
{
tlv->tlv_type = __cpu_to_be16(type);
}
static inline int TLV_SET(void *tlv, __u16 type, void *data, __u16 len)
{
struct tlv_desc *tlv_ptr;
int tlv_len;
tlv_len = TLV_LENGTH(len);
tlv_ptr = (struct tlv_desc *)tlv;
tlv_ptr->tlv_type = __cpu_to_be16(type);
tlv_ptr->tlv_len = __cpu_to_be16(tlv_len);
if (len && data) {
memcpy(TLV_DATA(tlv_ptr), data, len);
memset((char *)TLV_DATA(tlv_ptr) + len, 0 , TLV_SPACE(len) - tlv_len);
}
return TLV_SPACE(len);
}
/*
* A TLV list descriptor simplifies processing of messages
* containing multiple TLVs .
*/
struct tlv_list_desc {
struct tlv_desc *tlv_ptr; /* ptr to current TLV */
__u32 tlv_space; /* # bytes from curr TLV to list end */
};
static inline void TLV_LIST_INIT(struct tlv_list_desc *list,
void *data, __u32 space)
{
list->tlv_ptr = (struct tlv_desc *)data;
list->tlv_space = space;
}
static inline int TLV_LIST_EMPTY(struct tlv_list_desc *list)
{
return (list->tlv_space == 0 );
}
static inline int TLV_LIST_CHECK(struct tlv_list_desc *list, __u16 exp_type)
{
return TLV_CHECK(list->tlv_ptr, list->tlv_space, exp_type);
}
static inline void *TLV_LIST_DATA(struct tlv_list_desc *list)
{
return TLV_DATA(list->tlv_ptr);
}
static inline void TLV_LIST_STEP(struct tlv_list_desc *list)
{
__u16 tlv_space = TLV_ALIGN(__be16_to_cpu(list->tlv_ptr->tlv_len));
list->tlv_ptr = (struct tlv_desc *)((char *)list->tlv_ptr + tlv_space);
list->tlv_space -= tlv_space;
}
/*
* Configuration messages exchanged via NETLINK_GENERIC use the following
* family id , name , version and command .
*/
#define TIPC_GENL_NAME "TIPC"
#define TIPC_GENL_VERSION 0 x1
#define TIPC_GENL_CMD 0 x1
/*
* TIPC specific header used in NETLINK_GENERIC requests .
*/
struct tipc_genlmsghdr {
__u32 dest; /* Destination address */
__u16 cmd; /* Command */
__u16 reserved; /* Unused */
};
#define TIPC_GENL_HDRLEN NLMSG_ALIGN(sizeof (struct tipc_genlmsghdr))
/*
* Configuration messages exchanged via TIPC sockets use the TIPC configuration
* message header , which is defined below . This structure is analogous
* to the Netlink message header , but fields are stored in network byte order
* and no padding is permitted between the header and the message data
* that follows .
*/
struct tipc_cfg_msg_hdr {
__be32 tcm_len; /* Message length (including header) */
__be16 tcm_type; /* Command type */
__be16 tcm_flags; /* Additional flags */
char tcm_reserved[8 ]; /* Unused */
};
#define TCM_F_REQUEST 0 x1 /* Flag: Request message */
#define TCM_F_MORE 0 x2 /* Flag: Message to be continued */
#define TCM_ALIGN(datalen) (((datalen)+3 ) & ~3 )
#define TCM_LENGTH(datalen) (sizeof (struct tipc_cfg_msg_hdr) + datalen)
#define TCM_SPACE(datalen) (TCM_ALIGN(TCM_LENGTH(datalen)))
#define TCM_DATA(tcm_hdr) ((void *)((char *)(tcm_hdr) + TCM_LENGTH(0 )))
static inline int TCM_SET(void *msg, __u16 cmd, __u16 flags,
void *data, __u16 data_len)
{
struct tipc_cfg_msg_hdr *tcm_hdr;
int msg_len;
msg_len = TCM_LENGTH(data_len);
tcm_hdr = (struct tipc_cfg_msg_hdr *)msg;
tcm_hdr->tcm_len = __cpu_to_be32(msg_len);
tcm_hdr->tcm_type = __cpu_to_be16(cmd);
tcm_hdr->tcm_flags = __cpu_to_be16(flags);
if (data_len && data) {
memcpy(TCM_DATA(msg), data, data_len);
memset((char *)TCM_DATA(msg) + data_len, 0 , TCM_SPACE(data_len) - msg_len);
}
return TCM_SPACE(data_len);
}
#endif
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