/*
 * include/uapi/linux/tipc.h: Header for TIPC socket interface
 *
 * Copyright (c) 2003-2006, Ericsson AB
 * Copyright (c) 2005, 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_H_
#define _LINUX_TIPC_H_

#include <linux/types.h>
#include <linux/sockios.h>

/*
 * TIPC addressing primitives
 */

struct tipc_portid {
        __u32 ref;
        __u32 node;
};

struct tipc_name {
        __u32 type;
        __u32 instance;
};

struct tipc_name_seq {
        __u32 type;
        __u32 lower;
        __u32 upper;
};

static inline __u32 tipc_addr(unsigned int zone,
                              unsigned int cluster,
                              unsigned int node)
{
        return (zone << 24) | (cluster << 12) | node;
}

static inline unsigned int tipc_zone(__u32 addr)
{
        return addr >> 24;
}

static inline unsigned int tipc_cluster(__u32 addr)
{
        return (addr >> 12) & 0xfff;
}

static inline unsigned int tipc_node(__u32 addr)
{
        return addr & 0xfff;
}

/*
 * Application-accessible port name types
 */

#define TIPC_CFG_SRV            0       /* configuration service name type */
#define TIPC_TOP_SRV            1       /* topology service name type */
#define TIPC_LINK_STATE         2       /* link state name type */
#define TIPC_RESERVED_TYPES     64      /* lowest user-publishable name type */

/*
 * Publication scopes when binding port names and port name sequences
 */

#define TIPC_ZONE_SCOPE         1
#define TIPC_CLUSTER_SCOPE      2
#define TIPC_NODE_SCOPE         3

/*
 * Limiting values for messages
 */

#define TIPC_MAX_USER_MSG_SIZE  66000U

/*
 * Message importance levels
 */

#define TIPC_LOW_IMPORTANCE             0
#define TIPC_MEDIUM_IMPORTANCE          1
#define TIPC_HIGH_IMPORTANCE            2
#define TIPC_CRITICAL_IMPORTANCE        3

/*
 * Msg rejection/connection shutdown reasons
 */

#define TIPC_OK                 0
#define TIPC_ERR_NO_NAME        1
#define TIPC_ERR_NO_PORT        2
#define TIPC_ERR_NO_NODE        3
#define TIPC_ERR_OVERLOAD       4
#define TIPC_CONN_SHUTDOWN      5

/*
 * TIPC topology subscription service definitions
 */

#define TIPC_SUB_PORTS          0x01    /* filter for port availability */
#define TIPC_SUB_SERVICE        0x02    /* filter for service availability */
#define TIPC_SUB_CANCEL         0x04    /* cancel a subscription */

#define TIPC_WAIT_FOREVER       (~0)    /* timeout for permanent subscription */

struct tipc_subscr {
        struct tipc_name_seq seq;       /* name sequence of interest */
        __u32 timeout;                  /* subscription duration (in ms) */
        __u32 filter;                   /* bitmask of filter options */
        char usr_handle[8];             /* available for subscriber use */
};

#define TIPC_PUBLISHED          1       /* publication event */
#define TIPC_WITHDRAWN          2       /* withdraw event */
#define TIPC_SUBSCR_TIMEOUT     3       /* subscription timeout event */

struct tipc_event {
        __u32 event;                    /* event type */
        __u32 found_lower;              /* matching name seq instances */
        __u32 found_upper;              /*    "      "    "     "      */
        struct tipc_portid port;        /* associated port */
        struct tipc_subscr s;           /* associated subscription */
};

/*
 * Socket API
 */

#ifndef AF_TIPC
#define AF_TIPC         30
#endif

#ifndef PF_TIPC
#define PF_TIPC         AF_TIPC
#endif

#ifndef SOL_TIPC
#define SOL_TIPC        271
#endif

#define TIPC_ADDR_NAMESEQ       1
#define TIPC_ADDR_MCAST         1
#define TIPC_ADDR_NAME          2
#define TIPC_ADDR_ID            3

struct sockaddr_tipc {
        unsigned short family;
        unsigned char  addrtype;
        signed   char  scope;
        union {
                struct tipc_portid id;
                struct tipc_name_seq nameseq;
                struct {
                        struct tipc_name name;
                        __u32 domain;
                } name;
        } addr;
};

/*
 * Ancillary data objects supported by recvmsg()
 */

#define TIPC_ERRINFO    1       /* error info */
#define TIPC_RETDATA    2       /* returned data */
#define TIPC_DESTNAME   3       /* destination name */

/*
 * TIPC-specific socket option values
 */

#define TIPC_IMPORTANCE         127     /* Default: TIPC_LOW_IMPORTANCE */
#define TIPC_SRC_DROPPABLE      128     /* Default: based on socket type */
#define TIPC_DEST_DROPPABLE     129     /* Default: based on socket type */
#define TIPC_CONN_TIMEOUT       130     /* Default: 8000 (ms)  */
#define TIPC_NODE_RECVQ_DEPTH   131     /* Default: none (read only) */
#define TIPC_SOCK_RECVQ_DEPTH   132     /* Default: none (read only) */

/*
 * Maximum sizes of TIPC bearer-related names (including terminating NULL)
 * The string formatting for each name element is:
 * media: media
 * interface: media:interface name
 * link: Z.C.N:interface-Z.C.N:interface
 *
 */

#define TIPC_MAX_MEDIA_NAME     16
#define TIPC_MAX_IF_NAME        16
#define TIPC_MAX_BEARER_NAME    32
#define TIPC_MAX_LINK_NAME      60

#define SIOCGETLINKNAME         SIOCPROTOPRIVATE

struct tipc_sioc_ln_req {
        __u32 peer;
        __u32 bearer_id;
        char linkname[TIPC_MAX_LINK_NAME];
};
#endif