// SPDX-License-Identifier: GPL-2.0-or-later

  /* SCTP kernel implementation

   * (C) Copyright IBM Corp. 2001, 2004
   * Copyright (c) 1999-2000 Cisco, Inc.
   * Copyright (c) 1999-2001 Motorola, Inc.
   * Copyright (c) 2001 Intel Corp.

   *

   * This file is part of the SCTP kernel implementation

   *

   * This file converts numerical ID value to alphabetical names for SCTP
   * terms such as chunk type, parameter time, event type, etc.

   *

   * Please send any bug reports or fixes you make to the
   * email address(es):

   *    lksctp developers <linux-sctp@vger.kernel.org>

   *

   * Written or modified by:

   *    La Monte H.P. Yarroll <piggy@acm.org>
   *    Karl Knutson          <karl@athena.chicago.il.us>
   *    Xingang Guo           <xingang.guo@intel.com>
   *    Jon Grimm             <jgrimm@us.ibm.com>
   *    Daisy Chang	    <daisyc@us.ibm.com>
   *    Sridhar Samudrala	    <sri@us.ibm.com>

   */
  
  #include <net/sctp/sctp.h>

  /* These are printable forms of Chunk ID's from section 3.1.  */

  static const char *const sctp_cid_tbl[SCTP_NUM_BASE_CHUNK_TYPES] = {

  	"DATA",
  	"INIT",
  	"INIT_ACK",
  	"SACK",
  	"HEARTBEAT",
  	"HEARTBEAT_ACK",
  	"ABORT",
  	"SHUTDOWN",
  	"SHUTDOWN_ACK",
  	"ERROR",
  	"COOKIE_ECHO",
  	"COOKIE_ACK",
  	"ECN_ECNE",
  	"ECN_CWR",
  	"SHUTDOWN_COMPLETE",
  };
  
  /* Lookup "chunk type" debug name. */

  const char *sctp_cname(const union sctp_subtype cid)

  {

  	if (cid.chunk <= SCTP_CID_BASE_MAX)
  		return sctp_cid_tbl[cid.chunk];

  	switch (cid.chunk) {
  	case SCTP_CID_ASCONF:
  		return "ASCONF";
  
  	case SCTP_CID_ASCONF_ACK:
  		return "ASCONF_ACK";
  
  	case SCTP_CID_FWD_TSN:
  		return "FWD_TSN";

  	case SCTP_CID_AUTH:
  		return "AUTH";

  	case SCTP_CID_RECONF:
  		return "RECONF";

  	case SCTP_CID_I_DATA:
  		return "I_DATA";
  
  	case SCTP_CID_I_FWD_TSN:
  		return "I_FWD_TSN";

  	default:

  		break;
  	}

  	return "unknown chunk";
  }
  
  /* These are printable forms of the states.  */

  const char *const sctp_state_tbl[SCTP_STATE_NUM_STATES] = {

  	"STATE_CLOSED",
  	"STATE_COOKIE_WAIT",
  	"STATE_COOKIE_ECHOED",
  	"STATE_ESTABLISHED",
  	"STATE_SHUTDOWN_PENDING",
  	"STATE_SHUTDOWN_SENT",
  	"STATE_SHUTDOWN_RECEIVED",
  	"STATE_SHUTDOWN_ACK_SENT",
  };
  
  /* Events that could change the state of an association.  */

  const char *const sctp_evttype_tbl[] = {

  	"EVENT_T_unknown",
  	"EVENT_T_CHUNK",
  	"EVENT_T_TIMEOUT",
  	"EVENT_T_OTHER",
  	"EVENT_T_PRIMITIVE"
  };
  
  /* Return value of a state function */

  const char *const sctp_status_tbl[] = {

  	"DISPOSITION_DISCARD",
  	"DISPOSITION_CONSUME",
  	"DISPOSITION_NOMEM",
  	"DISPOSITION_DELETE_TCB",
  	"DISPOSITION_ABORT",
  	"DISPOSITION_VIOLATION",
  	"DISPOSITION_NOT_IMPL",
  	"DISPOSITION_ERROR",
  	"DISPOSITION_BUG"
  };
  
  /* Printable forms of primitives */

  static const char *const sctp_primitive_tbl[SCTP_NUM_PRIMITIVE_TYPES] = {

  	"PRIMITIVE_ASSOCIATE",
  	"PRIMITIVE_SHUTDOWN",
  	"PRIMITIVE_ABORT",
  	"PRIMITIVE_SEND",
  	"PRIMITIVE_REQUESTHEARTBEAT",

  	"PRIMITIVE_ASCONF",

  };
  
  /* Lookup primitive debug name. */

  const char *sctp_pname(const union sctp_subtype id)

  {

  	if (id.primitive <= SCTP_EVENT_PRIMITIVE_MAX)
  		return sctp_primitive_tbl[id.primitive];
  	return "unknown_primitive";
  }

  static const char *const sctp_other_tbl[] = {

  	"NO_PENDING_TSN",

  	"ICMP_PROTO_UNREACH",

  };
  
  /* Lookup "other" debug name. */

  const char *sctp_oname(const union sctp_subtype id)

  {

  	if (id.other <= SCTP_EVENT_OTHER_MAX)
  		return sctp_other_tbl[id.other];
  	return "unknown 'other' event";
  }

  static const char *const sctp_timer_tbl[] = {

  	"TIMEOUT_NONE",
  	"TIMEOUT_T1_COOKIE",
  	"TIMEOUT_T1_INIT",
  	"TIMEOUT_T2_SHUTDOWN",
  	"TIMEOUT_T3_RTX",
  	"TIMEOUT_T4_RTO",
  	"TIMEOUT_T5_SHUTDOWN_GUARD",
  	"TIMEOUT_HEARTBEAT",

  	"TIMEOUT_RECONF",

  	"TIMEOUT_SACK",
  	"TIMEOUT_AUTOCLOSE",
  };
  
  /* Lookup timer debug name. */

  const char *sctp_tname(const union sctp_subtype id)

  {

  	BUILD_BUG_ON(SCTP_EVENT_TIMEOUT_MAX + 1 != ARRAY_SIZE(sctp_timer_tbl));
  
  	if (id.timeout < ARRAY_SIZE(sctp_timer_tbl))

  		return sctp_timer_tbl[id.timeout];
  	return "unknown_timer";
  }