/*

   * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.

   * All rights reserved
   * www.brocade.com
   *
   * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License (GPL) Version 2 as
   * published by the Free Software Foundation
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * General Public License for more details.
   */
  /*
   * fcbuild.c - FC link service frame building and parsing routines
   */

  #include "bfad_drv.h"

  #include "bfa_fcbuild.h"

  
  /*
   * static build functions
   */

  static void     fc_els_rsp_build(struct fchs_s *fchs, u32 d_id, u32 s_id,

  				 __be16 ox_id);

  static void     fc_bls_rsp_build(struct fchs_s *fchs, u32 d_id, u32 s_id,

  				 __be16 ox_id);

  static struct fchs_s fc_els_req_tmpl;
  static struct fchs_s fc_els_rsp_tmpl;
  static struct fchs_s fc_bls_req_tmpl;
  static struct fchs_s fc_bls_rsp_tmpl;

  static struct fc_ba_acc_s ba_acc_tmpl;
  static struct fc_logi_s plogi_tmpl;
  static struct fc_prli_s prli_tmpl;
  static struct fc_rrq_s rrq_tmpl;

  static struct fchs_s fcp_fchs_tmpl;

  
  void
  fcbuild_init(void)
  {
  	/*
  	 * fc_els_req_tmpl
  	 */
  	fc_els_req_tmpl.routing = FC_RTG_EXT_LINK;
  	fc_els_req_tmpl.cat_info = FC_CAT_LD_REQUEST;
  	fc_els_req_tmpl.type = FC_TYPE_ELS;
  	fc_els_req_tmpl.f_ctl =

  		bfa_hton3b(FCTL_SEQ_INI | FCTL_FS_EXCH | FCTL_END_SEQ |

  			      FCTL_SI_XFER);
  	fc_els_req_tmpl.rx_id = FC_RXID_ANY;
  
  	/*
  	 * fc_els_rsp_tmpl
  	 */
  	fc_els_rsp_tmpl.routing = FC_RTG_EXT_LINK;
  	fc_els_rsp_tmpl.cat_info = FC_CAT_LD_REPLY;
  	fc_els_rsp_tmpl.type = FC_TYPE_ELS;
  	fc_els_rsp_tmpl.f_ctl =

  		bfa_hton3b(FCTL_EC_RESP | FCTL_SEQ_INI | FCTL_LS_EXCH |

  			      FCTL_END_SEQ | FCTL_SI_XFER);
  	fc_els_rsp_tmpl.rx_id = FC_RXID_ANY;
  
  	/*
  	 * fc_bls_req_tmpl
  	 */
  	fc_bls_req_tmpl.routing = FC_RTG_BASIC_LINK;
  	fc_bls_req_tmpl.type = FC_TYPE_BLS;

  	fc_bls_req_tmpl.f_ctl = bfa_hton3b(FCTL_END_SEQ | FCTL_SI_XFER);

  	fc_bls_req_tmpl.rx_id = FC_RXID_ANY;
  
  	/*
  	 * fc_bls_rsp_tmpl
  	 */
  	fc_bls_rsp_tmpl.routing = FC_RTG_BASIC_LINK;
  	fc_bls_rsp_tmpl.cat_info = FC_CAT_BA_ACC;
  	fc_bls_rsp_tmpl.type = FC_TYPE_BLS;
  	fc_bls_rsp_tmpl.f_ctl =

  		bfa_hton3b(FCTL_EC_RESP | FCTL_SEQ_INI | FCTL_LS_EXCH |

  			      FCTL_END_SEQ | FCTL_SI_XFER);
  	fc_bls_rsp_tmpl.rx_id = FC_RXID_ANY;
  
  	/*
  	 * ba_acc_tmpl
  	 */
  	ba_acc_tmpl.seq_id_valid = 0;
  	ba_acc_tmpl.low_seq_cnt = 0;
  	ba_acc_tmpl.high_seq_cnt = 0xFFFF;
  
  	/*
  	 * plogi_tmpl
  	 */
  	plogi_tmpl.csp.verhi = FC_PH_VER_PH_3;
  	plogi_tmpl.csp.verlo = FC_PH_VER_4_3;

  	plogi_tmpl.csp.ciro = 0x1;
  	plogi_tmpl.csp.cisc = 0x0;
  	plogi_tmpl.csp.altbbcred = 0x0;

  	plogi_tmpl.csp.conseq = cpu_to_be16(0x00FF);
  	plogi_tmpl.csp.ro_bitmap = cpu_to_be16(0x0002);
  	plogi_tmpl.csp.e_d_tov = cpu_to_be32(2000);

  
  	plogi_tmpl.class3.class_valid = 1;
  	plogi_tmpl.class3.sequential = 1;
  	plogi_tmpl.class3.conseq = 0xFF;
  	plogi_tmpl.class3.ospx = 1;
  
  	/*
  	 * prli_tmpl
  	 */
  	prli_tmpl.command = FC_ELS_PRLI;
  	prli_tmpl.pglen = 0x10;

  	prli_tmpl.pagebytes = cpu_to_be16(0x0014);

  	prli_tmpl.parampage.type = FC_TYPE_FCP;
  	prli_tmpl.parampage.imagepair = 1;
  	prli_tmpl.parampage.servparams.rxrdisab = 1;
  
  	/*
  	 * rrq_tmpl
  	 */
  	rrq_tmpl.els_cmd.els_code = FC_ELS_RRQ;
  
  	/*

  	 * fcp_struct fchs_s mpl

  	 */
  	fcp_fchs_tmpl.routing = FC_RTG_FC4_DEV_DATA;
  	fcp_fchs_tmpl.cat_info = FC_CAT_UNSOLICIT_CMD;
  	fcp_fchs_tmpl.type = FC_TYPE_FCP;
  	fcp_fchs_tmpl.f_ctl =

  		bfa_hton3b(FCTL_FS_EXCH | FCTL_END_SEQ | FCTL_SI_XFER);

  	fcp_fchs_tmpl.seq_id = 1;
  	fcp_fchs_tmpl.rx_id = FC_RXID_ANY;
  }
  
  static void

  fc_gs_fchdr_build(struct fchs_s *fchs, u32 d_id, u32 s_id, u32 ox_id)

  {

  	memset(fchs, 0, sizeof(struct fchs_s));

  
  	fchs->routing = FC_RTG_FC4_DEV_DATA;
  	fchs->cat_info = FC_CAT_UNSOLICIT_CTRL;
  	fchs->type = FC_TYPE_SERVICES;
  	fchs->f_ctl =

  		bfa_hton3b(FCTL_SEQ_INI | FCTL_FS_EXCH | FCTL_END_SEQ |

  			      FCTL_SI_XFER);
  	fchs->rx_id = FC_RXID_ANY;
  	fchs->d_id = (d_id);
  	fchs->s_id = (s_id);

  	fchs->ox_id = cpu_to_be16(ox_id);

  	/*

  	 * @todo no need to set ox_id for request
  	 *       no need to set rx_id for response
  	 */
  }

  static void
  fc_gsresp_fchdr_build(struct fchs_s *fchs, u32 d_id, u32 s_id, u16 ox_id)
  {
  	memset(fchs, 0, sizeof(struct fchs_s));
  
  	fchs->routing = FC_RTG_FC4_DEV_DATA;
  	fchs->cat_info = FC_CAT_SOLICIT_CTRL;
  	fchs->type = FC_TYPE_SERVICES;
  	fchs->f_ctl =
  		bfa_hton3b(FCTL_EC_RESP | FCTL_SEQ_INI | FCTL_LS_EXCH |
  			   FCTL_END_SEQ | FCTL_SI_XFER);
  	fchs->d_id = d_id;
  	fchs->s_id = s_id;
  	fchs->ox_id = ox_id;
  }

  void

  fc_els_req_build(struct fchs_s *fchs, u32 d_id, u32 s_id, __be16 ox_id)

  {

  	memcpy(fchs, &fc_els_req_tmpl, sizeof(struct fchs_s));

  	fchs->d_id = (d_id);
  	fchs->s_id = (s_id);

  	fchs->ox_id = cpu_to_be16(ox_id);

  }
  
  static void

  fc_els_rsp_build(struct fchs_s *fchs, u32 d_id, u32 s_id, __be16 ox_id)

  {

  	memcpy(fchs, &fc_els_rsp_tmpl, sizeof(struct fchs_s));

  	fchs->d_id = d_id;
  	fchs->s_id = s_id;
  	fchs->ox_id = ox_id;
  }
  
  enum fc_parse_status
  fc_els_rsp_parse(struct fchs_s *fchs, int len)
  {

  	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
  	struct fc_ls_rjt_s *ls_rjt = (struct fc_ls_rjt_s *) els_cmd;

  
  	len = len;
  
  	switch (els_cmd->els_code) {
  	case FC_ELS_LS_RJT:
  		if (ls_rjt->reason_code == FC_LS_RJT_RSN_LOGICAL_BUSY)

  			return FC_PARSE_BUSY;

  		else

  			return FC_PARSE_FAILURE;

  
  	case FC_ELS_ACC:

  		return FC_PARSE_OK;

  	}

  	return FC_PARSE_OK;

  }
  
  static void

  fc_bls_rsp_build(struct fchs_s *fchs, u32 d_id, u32 s_id, __be16 ox_id)

  {

  	memcpy(fchs, &fc_bls_rsp_tmpl, sizeof(struct fchs_s));

  	fchs->d_id = d_id;
  	fchs->s_id = s_id;
  	fchs->ox_id = ox_id;
  }
  
  static          u16
  fc_plogi_x_build(struct fchs_s *fchs, void *pld, u32 d_id, u32 s_id,

  		 __be16 ox_id, wwn_t port_name, wwn_t node_name,

  		 u16 pdu_size, u16 bb_cr, u8 els_code)

  {

  	struct fc_logi_s *plogi = (struct fc_logi_s *) (pld);

  	memcpy(plogi, &plogi_tmpl, sizeof(struct fc_logi_s));

  
  	plogi->els_cmd.els_code = els_code;
  	if (els_code == FC_ELS_PLOGI)
  		fc_els_req_build(fchs, d_id, s_id, ox_id);
  	else
  		fc_els_rsp_build(fchs, d_id, s_id, ox_id);

  	plogi->csp.rxsz = plogi->class3.rxsz = cpu_to_be16(pdu_size);

  	plogi->csp.bbcred  = cpu_to_be16(bb_cr);

  	memcpy(&plogi->port_name, &port_name, sizeof(wwn_t));
  	memcpy(&plogi->node_name, &node_name, sizeof(wwn_t));

  	return sizeof(struct fc_logi_s);

  }
  
  u16
  fc_flogi_build(struct fchs_s *fchs, struct fc_logi_s *flogi, u32 s_id,

  		u16 ox_id, wwn_t port_name, wwn_t node_name, u16 pdu_size,
  	       u8 set_npiv, u8 set_auth, u16 local_bb_credits)

  {

  	u32        d_id = bfa_hton3b(FC_FABRIC_PORT);

  	__be32	*vvl_info;

  	memcpy(flogi, &plogi_tmpl, sizeof(struct fc_logi_s));

  
  	flogi->els_cmd.els_code = FC_ELS_FLOGI;
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	flogi->csp.rxsz = flogi->class3.rxsz = cpu_to_be16(pdu_size);

  	flogi->port_name = port_name;
  	flogi->node_name = node_name;
  
  	/*
  	 * Set the NPIV Capability Bit ( word 1, bit 31) of Common
  	 * Service Parameters.
  	 */
  	flogi->csp.ciro = set_npiv;
  
  	/* set AUTH capability */
  	flogi->csp.security = set_auth;

  	flogi->csp.bbcred = cpu_to_be16(local_bb_credits);

  
  	/* Set brcd token in VVL */
  	vvl_info = (u32 *)&flogi->vvl[0];
  
  	/* set the flag to indicate the presence of VVL */
  	flogi->csp.npiv_supp    = 1; /* @todo. field name is not correct */

  	vvl_info[0]	= cpu_to_be32(FLOGI_VVL_BRCD);

  	return sizeof(struct fc_logi_s);

  }
  
  u16
  fc_flogi_acc_build(struct fchs_s *fchs, struct fc_logi_s *flogi, u32 s_id,

  		   __be16 ox_id, wwn_t port_name, wwn_t node_name,

  		   u16 pdu_size, u16 local_bb_credits, u8 bb_scn)

  {
  	u32        d_id = 0;

  	u16	   bbscn_rxsz = (bb_scn << 12) | pdu_size;

  	memcpy(flogi, &plogi_tmpl, sizeof(struct fc_logi_s));

  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);
  
  	flogi->els_cmd.els_code = FC_ELS_ACC;

  	flogi->class3.rxsz = cpu_to_be16(pdu_size);
  	flogi->csp.rxsz  = cpu_to_be16(bbscn_rxsz);	/* bb_scn/rxsz */

  	flogi->port_name = port_name;
  	flogi->node_name = node_name;

  	flogi->csp.bbcred = cpu_to_be16(local_bb_credits);

  	return sizeof(struct fc_logi_s);

  }
  
  u16
  fc_fdisc_build(struct fchs_s *fchs, struct fc_logi_s *flogi, u32 s_id,

  		u16 ox_id, wwn_t port_name, wwn_t node_name, u16 pdu_size)

  {

  	u32        d_id = bfa_hton3b(FC_FABRIC_PORT);

  	memcpy(flogi, &plogi_tmpl, sizeof(struct fc_logi_s));

  
  	flogi->els_cmd.els_code = FC_ELS_FDISC;
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	flogi->csp.rxsz = flogi->class3.rxsz = cpu_to_be16(pdu_size);

  	flogi->port_name = port_name;
  	flogi->node_name = node_name;

  	return sizeof(struct fc_logi_s);

  }
  
  u16
  fc_plogi_build(struct fchs_s *fchs, void *pld, u32 d_id, u32 s_id,
  	       u16 ox_id, wwn_t port_name, wwn_t node_name,

  	       u16 pdu_size, u16 bb_cr)

  {
  	return fc_plogi_x_build(fchs, pld, d_id, s_id, ox_id, port_name,

  				node_name, pdu_size, bb_cr, FC_ELS_PLOGI);

  }
  
  u16
  fc_plogi_acc_build(struct fchs_s *fchs, void *pld, u32 d_id, u32 s_id,
  		   u16 ox_id, wwn_t port_name, wwn_t node_name,

  		   u16 pdu_size, u16 bb_cr)

  {
  	return fc_plogi_x_build(fchs, pld, d_id, s_id, ox_id, port_name,

  				node_name, pdu_size, bb_cr, FC_ELS_ACC);

  }
  
  enum fc_parse_status
  fc_plogi_rsp_parse(struct fchs_s *fchs, int len, wwn_t port_name)
  {

  	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
  	struct fc_logi_s *plogi;
  	struct fc_ls_rjt_s *ls_rjt;

  
  	switch (els_cmd->els_code) {
  	case FC_ELS_LS_RJT:
  		ls_rjt = (struct fc_ls_rjt_s *) (fchs + 1);
  		if (ls_rjt->reason_code == FC_LS_RJT_RSN_LOGICAL_BUSY)

  			return FC_PARSE_BUSY;

  		else

  			return FC_PARSE_FAILURE;

  	case FC_ELS_ACC:
  		plogi = (struct fc_logi_s *) (fchs + 1);
  		if (len < sizeof(struct fc_logi_s))

  			return FC_PARSE_FAILURE;

  
  		if (!wwn_is_equal(plogi->port_name, port_name))

  			return FC_PARSE_FAILURE;

  
  		if (!plogi->class3.class_valid)

  			return FC_PARSE_FAILURE;

  		if (be16_to_cpu(plogi->class3.rxsz) < (FC_MIN_PDUSZ))

  			return FC_PARSE_FAILURE;

  		return FC_PARSE_OK;

  	default:

  		return FC_PARSE_FAILURE;

  	}
  }
  
  enum fc_parse_status
  fc_plogi_parse(struct fchs_s *fchs)
  {

  	struct fc_logi_s *plogi = (struct fc_logi_s *) (fchs + 1);

  
  	if (plogi->class3.class_valid != 1)
  		return FC_PARSE_FAILURE;

  	if ((be16_to_cpu(plogi->class3.rxsz) < FC_MIN_PDUSZ)
  	    || (be16_to_cpu(plogi->class3.rxsz) > FC_MAX_PDUSZ)

  	    || (plogi->class3.rxsz == 0))

  		return FC_PARSE_FAILURE;

  
  	return FC_PARSE_OK;
  }
  
  u16
  fc_prli_build(struct fchs_s *fchs, void *pld, u32 d_id, u32 s_id,
  	      u16 ox_id)
  {

  	struct fc_prli_s *prli = (struct fc_prli_s *) (pld);

  
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	memcpy(prli, &prli_tmpl, sizeof(struct fc_prli_s));

  
  	prli->command = FC_ELS_PRLI;
  	prli->parampage.servparams.initiator     = 1;
  	prli->parampage.servparams.retry         = 1;
  	prli->parampage.servparams.rec_support   = 1;
  	prli->parampage.servparams.task_retry_id = 0;
  	prli->parampage.servparams.confirm       = 1;

  	return sizeof(struct fc_prli_s);

  }
  
  u16
  fc_prli_acc_build(struct fchs_s *fchs, void *pld, u32 d_id, u32 s_id,

  		  __be16 ox_id, enum bfa_lport_role role)

  {

  	struct fc_prli_s *prli = (struct fc_prli_s *) (pld);

  
  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);

  	memcpy(prli, &prli_tmpl, sizeof(struct fc_prli_s));

  
  	prli->command = FC_ELS_ACC;

  	prli->parampage.servparams.initiator = 1;

  
  	prli->parampage.rspcode = FC_PRLI_ACC_XQTD;

  	return sizeof(struct fc_prli_s);

  }
  
  enum fc_parse_status
  fc_prli_rsp_parse(struct fc_prli_s *prli, int len)
  {
  	if (len < sizeof(struct fc_prli_s))

  		return FC_PARSE_FAILURE;

  
  	if (prli->command != FC_ELS_ACC)

  		return FC_PARSE_FAILURE;

  
  	if ((prli->parampage.rspcode != FC_PRLI_ACC_XQTD)
  	    && (prli->parampage.rspcode != FC_PRLI_ACC_PREDEF_IMG))

  		return FC_PARSE_FAILURE;

  
  	if (prli->parampage.servparams.target != 1)

  		return FC_PARSE_FAILURE;

  	return FC_PARSE_OK;

  }
  
  enum fc_parse_status
  fc_prli_parse(struct fc_prli_s *prli)
  {
  	if (prli->parampage.type != FC_TYPE_FCP)

  		return FC_PARSE_FAILURE;

  
  	if (!prli->parampage.imagepair)

  		return FC_PARSE_FAILURE;

  
  	if (!prli->parampage.servparams.initiator)

  		return FC_PARSE_FAILURE;

  	return FC_PARSE_OK;

  }
  
  u16

  fc_logo_build(struct fchs_s *fchs, struct fc_logo_s *logo, u32 d_id, u32 s_id,
  	      u16 ox_id, wwn_t port_name)

  {
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	memset(logo, '\0', sizeof(struct fc_logo_s));

  	logo->els_cmd.els_code = FC_ELS_LOGO;
  	logo->nport_id = (s_id);
  	logo->orig_port_name = port_name;

  	return sizeof(struct fc_logo_s);

  }

  static u16

  fc_adisc_x_build(struct fchs_s *fchs, struct fc_adisc_s *adisc, u32 d_id,

  		 u32 s_id, __be16 ox_id, wwn_t port_name,

  		 wwn_t node_name, u8 els_code)
  {

  	memset(adisc, '\0', sizeof(struct fc_adisc_s));

  
  	adisc->els_cmd.els_code = els_code;
  
  	if (els_code == FC_ELS_ADISC)
  		fc_els_req_build(fchs, d_id, s_id, ox_id);
  	else
  		fc_els_rsp_build(fchs, d_id, s_id, ox_id);
  
  	adisc->orig_HA = 0;
  	adisc->orig_port_name = port_name;
  	adisc->orig_node_name = node_name;
  	adisc->nport_id = (s_id);

  	return sizeof(struct fc_adisc_s);

  }
  
  u16
  fc_adisc_build(struct fchs_s *fchs, struct fc_adisc_s *adisc, u32 d_id,

  		u32 s_id, __be16 ox_id, wwn_t port_name, wwn_t node_name)

  {
  	return fc_adisc_x_build(fchs, adisc, d_id, s_id, ox_id, port_name,
  				node_name, FC_ELS_ADISC);
  }
  
  u16
  fc_adisc_acc_build(struct fchs_s *fchs, struct fc_adisc_s *adisc, u32 d_id,

  		   u32 s_id, __be16 ox_id, wwn_t port_name,

  		   wwn_t node_name)
  {
  	return fc_adisc_x_build(fchs, adisc, d_id, s_id, ox_id, port_name,
  				node_name, FC_ELS_ACC);
  }
  
  enum fc_parse_status
  fc_adisc_rsp_parse(struct fc_adisc_s *adisc, int len, wwn_t port_name,
  				 wwn_t node_name)
  {
  
  	if (len < sizeof(struct fc_adisc_s))

  		return FC_PARSE_FAILURE;

  
  	if (adisc->els_cmd.els_code != FC_ELS_ACC)

  		return FC_PARSE_FAILURE;

  
  	if (!wwn_is_equal(adisc->orig_port_name, port_name))

  		return FC_PARSE_FAILURE;

  	return FC_PARSE_OK;

  }
  
  enum fc_parse_status

  fc_adisc_parse(struct fchs_s *fchs, void *pld, u32 host_dap, wwn_t node_name,
  	       wwn_t port_name)

  {

  	struct fc_adisc_s *adisc = (struct fc_adisc_s *) pld;

  
  	if (adisc->els_cmd.els_code != FC_ELS_ACC)

  		return FC_PARSE_FAILURE;

  
  	if ((adisc->nport_id == (host_dap))
  	    && wwn_is_equal(adisc->orig_port_name, port_name)
  	    && wwn_is_equal(adisc->orig_node_name, node_name))

  		return FC_PARSE_OK;

  	return FC_PARSE_FAILURE;

  }
  
  enum fc_parse_status
  fc_pdisc_parse(struct fchs_s *fchs, wwn_t node_name, wwn_t port_name)
  {

  	struct fc_logi_s *pdisc = (struct fc_logi_s *) (fchs + 1);

  
  	if (pdisc->class3.class_valid != 1)
  		return FC_PARSE_FAILURE;

  	if ((be16_to_cpu(pdisc->class3.rxsz) <

  		(FC_MIN_PDUSZ - sizeof(struct fchs_s)))

  	    || (pdisc->class3.rxsz == 0))

  		return FC_PARSE_FAILURE;

  
  	if (!wwn_is_equal(pdisc->port_name, port_name))

  		return FC_PARSE_FAILURE;

  
  	if (!wwn_is_equal(pdisc->node_name, node_name))

  		return FC_PARSE_FAILURE;

  
  	return FC_PARSE_OK;
  }
  
  u16
  fc_abts_build(struct fchs_s *fchs, u32 d_id, u32 s_id, u16 ox_id)
  {

  	memcpy(fchs, &fc_bls_req_tmpl, sizeof(struct fchs_s));

  	fchs->cat_info = FC_CAT_ABTS;
  	fchs->d_id = (d_id);
  	fchs->s_id = (s_id);

  	fchs->ox_id = cpu_to_be16(ox_id);

  	return sizeof(struct fchs_s);

  }
  
  enum fc_parse_status
  fc_abts_rsp_parse(struct fchs_s *fchs, int len)
  {
  	if ((fchs->cat_info == FC_CAT_BA_ACC)
  	    || (fchs->cat_info == FC_CAT_BA_RJT))

  		return FC_PARSE_OK;

  	return FC_PARSE_FAILURE;

  }
  
  u16

  fc_rrq_build(struct fchs_s *fchs, struct fc_rrq_s *rrq, u32 d_id, u32 s_id,
  	     u16 ox_id, u16 rrq_oxid)

  {
  	fc_els_req_build(fchs, d_id, s_id, ox_id);
  
  	/*
  	 * build rrq payload
  	 */

  	memcpy(rrq, &rrq_tmpl, sizeof(struct fc_rrq_s));

  	rrq->s_id = (s_id);

  	rrq->ox_id = cpu_to_be16(rrq_oxid);

  	rrq->rx_id = FC_RXID_ANY;

  	return sizeof(struct fc_rrq_s);

  }
  
  u16
  fc_logo_acc_build(struct fchs_s *fchs, void *pld, u32 d_id, u32 s_id,

  		  __be16 ox_id)

  {

  	struct fc_els_cmd_s *acc = pld;

  
  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);

  	memset(acc, 0, sizeof(struct fc_els_cmd_s));

  	acc->els_code = FC_ELS_ACC;

  	return sizeof(struct fc_els_cmd_s);

  }
  
  u16
  fc_ls_rjt_build(struct fchs_s *fchs, struct fc_ls_rjt_s *ls_rjt, u32 d_id,

  		u32 s_id, __be16 ox_id, u8 reason_code,

  		u8 reason_code_expl)
  {
  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);

  	memset(ls_rjt, 0, sizeof(struct fc_ls_rjt_s));

  
  	ls_rjt->els_cmd.els_code = FC_ELS_LS_RJT;
  	ls_rjt->reason_code = reason_code;
  	ls_rjt->reason_code_expl = reason_code_expl;
  	ls_rjt->vendor_unique = 0x00;

  	return sizeof(struct fc_ls_rjt_s);

  }
  
  u16
  fc_ba_acc_build(struct fchs_s *fchs, struct fc_ba_acc_s *ba_acc, u32 d_id,

  		u32 s_id, __be16 ox_id, u16 rx_id)

  {
  	fc_bls_rsp_build(fchs, d_id, s_id, ox_id);

  	memcpy(ba_acc, &ba_acc_tmpl, sizeof(struct fc_ba_acc_s));

  
  	fchs->rx_id = rx_id;
  
  	ba_acc->ox_id = fchs->ox_id;
  	ba_acc->rx_id = fchs->rx_id;

  	return sizeof(struct fc_ba_acc_s);

  }
  
  u16

  fc_ls_acc_build(struct fchs_s *fchs, struct fc_els_cmd_s *els_cmd, u32 d_id,

  		u32 s_id, __be16 ox_id)

  {
  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);

  	memset(els_cmd, 0, sizeof(struct fc_els_cmd_s));

  	els_cmd->els_code = FC_ELS_ACC;

  	return sizeof(struct fc_els_cmd_s);

  }
  
  int
  fc_logout_params_pages(struct fchs_s *fc_frame, u8 els_code)
  {
  	int             num_pages = 0;

  	struct fc_prlo_s *prlo;
  	struct fc_tprlo_s *tprlo;

  
  	if (els_code == FC_ELS_PRLO) {
  		prlo = (struct fc_prlo_s *) (fc_frame + 1);

  		num_pages = (be16_to_cpu(prlo->payload_len) - 4) / 16;

  	} else {
  		tprlo = (struct fc_tprlo_s *) (fc_frame + 1);

  		num_pages = (be16_to_cpu(tprlo->payload_len) - 4) / 16;

  	}
  	return num_pages;
  }
  
  u16
  fc_tprlo_acc_build(struct fchs_s *fchs, struct fc_tprlo_acc_s *tprlo_acc,

  		u32 d_id, u32 s_id, __be16 ox_id, int num_pages)

  {
  	int             page;
  
  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);

  	memset(tprlo_acc, 0, (num_pages * 16) + 4);

  	tprlo_acc->command = FC_ELS_ACC;
  
  	tprlo_acc->page_len = 0x10;

  	tprlo_acc->payload_len = cpu_to_be16((num_pages * 16) + 4);

  
  	for (page = 0; page < num_pages; page++) {
  		tprlo_acc->tprlo_acc_params[page].opa_valid = 0;
  		tprlo_acc->tprlo_acc_params[page].rpa_valid = 0;
  		tprlo_acc->tprlo_acc_params[page].fc4type_csp = FC_TYPE_FCP;
  		tprlo_acc->tprlo_acc_params[page].orig_process_assc = 0;
  		tprlo_acc->tprlo_acc_params[page].resp_process_assc = 0;
  	}

  	return be16_to_cpu(tprlo_acc->payload_len);

  }
  
  u16

  fc_prlo_acc_build(struct fchs_s *fchs, struct fc_prlo_acc_s *prlo_acc, u32 d_id,

  		  u32 s_id, __be16 ox_id, int num_pages)

  {
  	int             page;
  
  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);

  	memset(prlo_acc, 0, (num_pages * 16) + 4);

  	prlo_acc->command = FC_ELS_ACC;
  	prlo_acc->page_len = 0x10;

  	prlo_acc->payload_len = cpu_to_be16((num_pages * 16) + 4);

  
  	for (page = 0; page < num_pages; page++) {
  		prlo_acc->prlo_acc_params[page].opa_valid = 0;
  		prlo_acc->prlo_acc_params[page].rpa_valid = 0;
  		prlo_acc->prlo_acc_params[page].fc4type_csp = FC_TYPE_FCP;
  		prlo_acc->prlo_acc_params[page].orig_process_assc = 0;
  		prlo_acc->prlo_acc_params[page].resp_process_assc = 0;
  	}

  	return be16_to_cpu(prlo_acc->payload_len);

  }
  
  u16
  fc_rnid_build(struct fchs_s *fchs, struct fc_rnid_cmd_s *rnid, u32 d_id,

  		u32 s_id, u16 ox_id, u32 data_format)

  {
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	memset(rnid, 0, sizeof(struct fc_rnid_cmd_s));

  
  	rnid->els_cmd.els_code = FC_ELS_RNID;
  	rnid->node_id_data_format = data_format;

  	return sizeof(struct fc_rnid_cmd_s);

  }
  
  u16

  fc_rnid_acc_build(struct fchs_s *fchs, struct fc_rnid_acc_s *rnid_acc, u32 d_id,

  		  u32 s_id, __be16 ox_id, u32 data_format,

  		  struct fc_rnid_common_id_data_s *common_id_data,
  		  struct fc_rnid_general_topology_data_s *gen_topo_data)

  {

  	memset(rnid_acc, 0, sizeof(struct fc_rnid_acc_s));

  
  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);
  
  	rnid_acc->els_cmd.els_code = FC_ELS_ACC;
  	rnid_acc->node_id_data_format = data_format;
  	rnid_acc->common_id_data_length =
  			sizeof(struct fc_rnid_common_id_data_s);
  	rnid_acc->common_id_data = *common_id_data;
  
  	if (data_format == RNID_NODEID_DATA_FORMAT_DISCOVERY) {
  		rnid_acc->specific_id_data_length =
  			sizeof(struct fc_rnid_general_topology_data_s);

  		rnid_acc->gen_topology_data = *gen_topo_data;

  		return sizeof(struct fc_rnid_acc_s);

  	} else {

  		return sizeof(struct fc_rnid_acc_s) -
  			sizeof(struct fc_rnid_general_topology_data_s);

  	}
  
  }
  
  u16
  fc_rpsc_build(struct fchs_s *fchs, struct fc_rpsc_cmd_s *rpsc, u32 d_id,

  		u32 s_id, u16 ox_id)

  {
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	memset(rpsc, 0, sizeof(struct fc_rpsc_cmd_s));

  
  	rpsc->els_cmd.els_code = FC_ELS_RPSC;

  	return sizeof(struct fc_rpsc_cmd_s);

  }
  
  u16

  fc_rpsc2_build(struct fchs_s *fchs, struct fc_rpsc2_cmd_s *rpsc2, u32 d_id,
  		u32 s_id, u32 *pid_list, u16 npids)

  {

  	u32 dctlr_id = FC_DOMAIN_CTRLR(bfa_hton3b(d_id));

  	int i = 0;

  	fc_els_req_build(fchs, bfa_hton3b(dctlr_id), s_id, 0);

  	memset(rpsc2, 0, sizeof(struct fc_rpsc2_cmd_s));

  
  	rpsc2->els_cmd.els_code = FC_ELS_RPSC;

  	rpsc2->token = cpu_to_be32(FC_BRCD_TOKEN);
  	rpsc2->num_pids  = cpu_to_be16(npids);

  	for (i = 0; i < npids; i++)
  		rpsc2->pid_list[i].pid = pid_list[i];

  	return sizeof(struct fc_rpsc2_cmd_s) + ((npids - 1) * (sizeof(u32)));

  }
  
  u16
  fc_rpsc_acc_build(struct fchs_s *fchs, struct fc_rpsc_acc_s *rpsc_acc,

  		u32 d_id, u32 s_id, __be16 ox_id,

  		  struct fc_rpsc_speed_info_s *oper_speed)

  {

  	memset(rpsc_acc, 0, sizeof(struct fc_rpsc_acc_s));

  
  	fc_els_rsp_build(fchs, d_id, s_id, ox_id);
  
  	rpsc_acc->command = FC_ELS_ACC;

  	rpsc_acc->num_entries = cpu_to_be16(1);

  
  	rpsc_acc->speed_info[0].port_speed_cap =

  		cpu_to_be16(oper_speed->port_speed_cap);

  
  	rpsc_acc->speed_info[0].port_op_speed =

  		cpu_to_be16(oper_speed->port_op_speed);

  	return sizeof(struct fc_rpsc_acc_s);

  }

  u16
  fc_logo_rsp_parse(struct fchs_s *fchs, int len)
  {

  	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);

  
  	len = len;
  	if (els_cmd->els_code != FC_ELS_ACC)
  		return FC_PARSE_FAILURE;
  
  	return FC_PARSE_OK;
  }
  
  u16

  fc_pdisc_build(struct fchs_s *fchs, u32 d_id, u32 s_id, u16 ox_id,
  	       wwn_t port_name, wwn_t node_name, u16 pdu_size)

  {

  	struct fc_logi_s *pdisc = (struct fc_logi_s *) (fchs + 1);

  	memcpy(pdisc, &plogi_tmpl, sizeof(struct fc_logi_s));

  
  	pdisc->els_cmd.els_code = FC_ELS_PDISC;
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	pdisc->csp.rxsz = pdisc->class3.rxsz = cpu_to_be16(pdu_size);

  	pdisc->port_name = port_name;
  	pdisc->node_name = node_name;

  	return sizeof(struct fc_logi_s);

  }
  
  u16
  fc_pdisc_rsp_parse(struct fchs_s *fchs, int len, wwn_t port_name)
  {

  	struct fc_logi_s *pdisc = (struct fc_logi_s *) (fchs + 1);

  
  	if (len < sizeof(struct fc_logi_s))

  		return FC_PARSE_LEN_INVAL;

  
  	if (pdisc->els_cmd.els_code != FC_ELS_ACC)

  		return FC_PARSE_ACC_INVAL;

  
  	if (!wwn_is_equal(pdisc->port_name, port_name))

  		return FC_PARSE_PWWN_NOT_EQUAL;

  
  	if (!pdisc->class3.class_valid)

  		return FC_PARSE_NWWN_NOT_EQUAL;

  	if (be16_to_cpu(pdisc->class3.rxsz) < (FC_MIN_PDUSZ))

  		return FC_PARSE_RXSZ_INVAL;

  	return FC_PARSE_OK;

  }
  
  u16
  fc_prlo_build(struct fchs_s *fchs, u32 d_id, u32 s_id, u16 ox_id,
  	      int num_pages)
  {

  	struct fc_prlo_s *prlo = (struct fc_prlo_s *) (fchs + 1);

  	int             page;
  
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	memset(prlo, 0, (num_pages * 16) + 4);

  	prlo->command = FC_ELS_PRLO;
  	prlo->page_len = 0x10;

  	prlo->payload_len = cpu_to_be16((num_pages * 16) + 4);

  
  	for (page = 0; page < num_pages; page++) {
  		prlo->prlo_params[page].type = FC_TYPE_FCP;
  		prlo->prlo_params[page].opa_valid = 0;
  		prlo->prlo_params[page].rpa_valid = 0;
  		prlo->prlo_params[page].orig_process_assc = 0;
  		prlo->prlo_params[page].resp_process_assc = 0;
  	}

  	return be16_to_cpu(prlo->payload_len);

  }
  
  u16
  fc_prlo_rsp_parse(struct fchs_s *fchs, int len)
  {

  	struct fc_prlo_acc_s *prlo = (struct fc_prlo_acc_s *) (fchs + 1);

  	int             num_pages = 0;
  	int             page = 0;
  
  	len = len;
  
  	if (prlo->command != FC_ELS_ACC)

  		return FC_PARSE_FAILURE;

  	num_pages = ((be16_to_cpu(prlo->payload_len)) - 4) / 16;

  
  	for (page = 0; page < num_pages; page++) {
  		if (prlo->prlo_acc_params[page].type != FC_TYPE_FCP)
  			return FC_PARSE_FAILURE;
  
  		if (prlo->prlo_acc_params[page].opa_valid != 0)
  			return FC_PARSE_FAILURE;
  
  		if (prlo->prlo_acc_params[page].rpa_valid != 0)
  			return FC_PARSE_FAILURE;
  
  		if (prlo->prlo_acc_params[page].orig_process_assc != 0)
  			return FC_PARSE_FAILURE;
  
  		if (prlo->prlo_acc_params[page].resp_process_assc != 0)
  			return FC_PARSE_FAILURE;
  	}

  	return FC_PARSE_OK;

  
  }
  
  u16

  fc_tprlo_build(struct fchs_s *fchs, u32 d_id, u32 s_id, u16 ox_id,
  	       int num_pages, enum fc_tprlo_type tprlo_type, u32 tpr_id)

  {

  	struct fc_tprlo_s *tprlo = (struct fc_tprlo_s *) (fchs + 1);

  	int             page;
  
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	memset(tprlo, 0, (num_pages * 16) + 4);

  	tprlo->command = FC_ELS_TPRLO;
  	tprlo->page_len = 0x10;

  	tprlo->payload_len = cpu_to_be16((num_pages * 16) + 4);

  
  	for (page = 0; page < num_pages; page++) {
  		tprlo->tprlo_params[page].type = FC_TYPE_FCP;
  		tprlo->tprlo_params[page].opa_valid = 0;
  		tprlo->tprlo_params[page].rpa_valid = 0;
  		tprlo->tprlo_params[page].orig_process_assc = 0;
  		tprlo->tprlo_params[page].resp_process_assc = 0;
  		if (tprlo_type == FC_GLOBAL_LOGO) {
  			tprlo->tprlo_params[page].global_process_logout = 1;
  		} else if (tprlo_type == FC_TPR_LOGO) {
  			tprlo->tprlo_params[page].tpo_nport_valid = 1;
  			tprlo->tprlo_params[page].tpo_nport_id = (tpr_id);
  		}
  	}

  	return be16_to_cpu(tprlo->payload_len);

  }
  
  u16
  fc_tprlo_rsp_parse(struct fchs_s *fchs, int len)
  {
  	struct fc_tprlo_acc_s *tprlo = (struct fc_tprlo_acc_s *) (fchs + 1);
  	int             num_pages = 0;
  	int             page = 0;
  
  	len = len;
  
  	if (tprlo->command != FC_ELS_ACC)

  		return FC_PARSE_ACC_INVAL;

  	num_pages = (be16_to_cpu(tprlo->payload_len) - 4) / 16;

  
  	for (page = 0; page < num_pages; page++) {
  		if (tprlo->tprlo_acc_params[page].type != FC_TYPE_FCP)

  			return FC_PARSE_NOT_FCP;

  		if (tprlo->tprlo_acc_params[page].opa_valid != 0)

  			return FC_PARSE_OPAFLAG_INVAL;

  		if (tprlo->tprlo_acc_params[page].rpa_valid != 0)

  			return FC_PARSE_RPAFLAG_INVAL;

  		if (tprlo->tprlo_acc_params[page].orig_process_assc != 0)

  			return FC_PARSE_OPA_INVAL;

  		if (tprlo->tprlo_acc_params[page].resp_process_assc != 0)

  			return FC_PARSE_RPA_INVAL;

  	}

  	return FC_PARSE_OK;

  }
  
  enum fc_parse_status
  fc_rrq_rsp_parse(struct fchs_s *fchs, int len)
  {

  	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);

  
  	len = len;
  	if (els_cmd->els_code != FC_ELS_ACC)
  		return FC_PARSE_FAILURE;
  
  	return FC_PARSE_OK;
  }
  
  u16

  fc_ba_rjt_build(struct fchs_s *fchs, u32 d_id, u32 s_id, __be16 ox_id,

  		u32 reason_code, u32 reason_expl)

  {

  	struct fc_ba_rjt_s *ba_rjt = (struct fc_ba_rjt_s *) (fchs + 1);

  
  	fc_bls_rsp_build(fchs, d_id, s_id, ox_id);
  
  	fchs->cat_info = FC_CAT_BA_RJT;
  	ba_rjt->reason_code = reason_code;
  	ba_rjt->reason_expl = reason_expl;

  	return sizeof(struct fc_ba_rjt_s);

  }
  
  static void
  fc_gs_cthdr_build(struct ct_hdr_s *cthdr, u32 s_id, u16 cmd_code)
  {

  	memset(cthdr, 0, sizeof(struct ct_hdr_s));

  	cthdr->rev_id = CT_GS3_REVISION;
  	cthdr->gs_type = CT_GSTYPE_DIRSERVICE;
  	cthdr->gs_sub_type = CT_GSSUBTYPE_NAMESERVER;

  	cthdr->cmd_rsp_code = cpu_to_be16(cmd_code);

  }
  
  static void
  fc_gs_fdmi_cthdr_build(struct ct_hdr_s *cthdr, u32 s_id, u16 cmd_code)
  {

  	memset(cthdr, 0, sizeof(struct ct_hdr_s));

  	cthdr->rev_id = CT_GS3_REVISION;
  	cthdr->gs_type = CT_GSTYPE_MGMTSERVICE;
  	cthdr->gs_sub_type = CT_GSSUBTYPE_HBA_MGMTSERVER;

  	cthdr->cmd_rsp_code = cpu_to_be16(cmd_code);

  }
  
  static void
  fc_gs_ms_cthdr_build(struct ct_hdr_s *cthdr, u32 s_id, u16 cmd_code,
  					 u8 sub_type)
  {

  	memset(cthdr, 0, sizeof(struct ct_hdr_s));

  	cthdr->rev_id = CT_GS3_REVISION;
  	cthdr->gs_type = CT_GSTYPE_MGMTSERVICE;
  	cthdr->gs_sub_type = sub_type;

  	cthdr->cmd_rsp_code = cpu_to_be16(cmd_code);

  }
  
  u16
  fc_gidpn_build(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,
  	       wwn_t port_name)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_gidpn_req_s *gidpn = (struct fcgs_gidpn_req_s *)(cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, ox_id);
  	fc_gs_cthdr_build(cthdr, s_id, GS_GID_PN);

  	memset(gidpn, 0, sizeof(struct fcgs_gidpn_req_s));

  	gidpn->port_name = port_name;

  	return sizeof(struct fcgs_gidpn_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_gpnid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,
  	       u32 port_id)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;

  	fcgs_gpnid_req_t *gpnid = (fcgs_gpnid_req_t *) (cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, ox_id);
  	fc_gs_cthdr_build(cthdr, s_id, GS_GPN_ID);

  	memset(gpnid, 0, sizeof(fcgs_gpnid_req_t));

  	gpnid->dap = port_id;

  	return sizeof(fcgs_gpnid_req_t) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_gnnid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,
  	       u32 port_id)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;

  	fcgs_gnnid_req_t *gnnid = (fcgs_gnnid_req_t *) (cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, ox_id);
  	fc_gs_cthdr_build(cthdr, s_id, GS_GNN_ID);

  	memset(gnnid, 0, sizeof(fcgs_gnnid_req_t));

  	gnnid->dap = port_id;

  	return sizeof(fcgs_gnnid_req_t) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_ct_rsp_parse(struct ct_hdr_s *cthdr)
  {

  	if (be16_to_cpu(cthdr->cmd_rsp_code) != CT_RSP_ACCEPT) {

  		if (cthdr->reason_code == CT_RSN_LOGICAL_BUSY)
  			return FC_PARSE_BUSY;
  		else
  			return FC_PARSE_FAILURE;
  	}
  
  	return FC_PARSE_OK;
  }
  
  u16

  fc_gs_rjt_build(struct fchs_s *fchs,  struct ct_hdr_s *cthdr,
  		u32 d_id, u32 s_id, u16 ox_id, u8 reason_code,
  		u8 reason_code_expl)
  {
  	fc_gsresp_fchdr_build(fchs, d_id, s_id, ox_id);
  
  	cthdr->cmd_rsp_code = cpu_to_be16(CT_RSP_REJECT);
  	cthdr->rev_id = CT_GS3_REVISION;
  
  	cthdr->reason_code = reason_code;
  	cthdr->exp_code    = reason_code_expl;
  	return sizeof(struct ct_hdr_s);
  }
  
  u16

  fc_scr_build(struct fchs_s *fchs, struct fc_scr_s *scr,
  		u8 set_br_reg, u32 s_id, u16 ox_id)

  {

  	u32        d_id = bfa_hton3b(FC_FABRIC_CONTROLLER);

  
  	fc_els_req_build(fchs, d_id, s_id, ox_id);

  	memset(scr, 0, sizeof(struct fc_scr_s));

  	scr->command = FC_ELS_SCR;
  	scr->reg_func = FC_SCR_REG_FUNC_FULL;
  	if (set_br_reg)
  		scr->vu_reg_func = FC_VU_SCR_REG_FUNC_FABRIC_NAME_CHANGE;

  	return sizeof(struct fc_scr_s);

  }
  
  u16

  fc_rscn_build(struct fchs_s *fchs, struct fc_rscn_pl_s *rscn,
  		u32 s_id, u16 ox_id)

  {

  	u32        d_id = bfa_hton3b(FC_FABRIC_CONTROLLER);

  	u16        payldlen;
  
  	fc_els_req_build(fchs, d_id, s_id, ox_id);
  	rscn->command = FC_ELS_RSCN;
  	rscn->pagelen = sizeof(rscn->event[0]);
  
  	payldlen = sizeof(u32) + rscn->pagelen;

  	rscn->payldlen = cpu_to_be16(payldlen);

  
  	rscn->event[0].format = FC_RSCN_FORMAT_PORTID;
  	rscn->event[0].portid = s_id;

  	return sizeof(struct fc_rscn_pl_s);

  }
  
  u16
  fc_rftid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,

  	       enum bfa_lport_role roles)

  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_rftid_req_s *rftid = (struct fcgs_rftid_req_s *)(cthdr + 1);

  	u32        type_value, d_id = bfa_hton3b(FC_NAME_SERVER);

  	u8         index;
  
  	fc_gs_fchdr_build(fchs, d_id, s_id, ox_id);
  	fc_gs_cthdr_build(cthdr, s_id, GS_RFT_ID);

  	memset(rftid, 0, sizeof(struct fcgs_rftid_req_s));

  
  	rftid->dap = s_id;
  
  	/* By default, FCP FC4 Type is registered */
  	index = FC_TYPE_FCP >> 5;
  	type_value = 1 << (FC_TYPE_FCP % 32);

  	rftid->fc4_type[index] = cpu_to_be32(type_value);

  	return sizeof(struct fcgs_rftid_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16

  fc_rftid_build_sol(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,
  		   u8 *fc4_bitmap, u32 bitmap_size)

  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_rftid_req_s *rftid = (struct fcgs_rftid_req_s *)(cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, ox_id);
  	fc_gs_cthdr_build(cthdr, s_id, GS_RFT_ID);

  	memset(rftid, 0, sizeof(struct fcgs_rftid_req_s));

  
  	rftid->dap = s_id;

  	memcpy((void *)rftid->fc4_type, (void *)fc4_bitmap,

  		(bitmap_size < 32 ? bitmap_size : 32));

  	return sizeof(struct fcgs_rftid_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_rffid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,
  	       u8 fc4_type, u8 fc4_ftrs)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_rffid_req_s *rffid = (struct fcgs_rffid_req_s *)(cthdr + 1);

  	u32         d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, ox_id);
  	fc_gs_cthdr_build(cthdr, s_id, GS_RFF_ID);

  	memset(rffid, 0, sizeof(struct fcgs_rffid_req_s));

  	rffid->dap	    = s_id;

  	rffid->fc4ftr_bits  = fc4_ftrs;

  	rffid->fc4_type	    = fc4_type;

  	return sizeof(struct fcgs_rffid_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_rspnid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u16 ox_id,
  		u8 *name)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;

  	struct fcgs_rspnid_req_s *rspnid =

  			(struct fcgs_rspnid_req_s *)(cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, ox_id);
  	fc_gs_cthdr_build(cthdr, s_id, GS_RSPN_ID);

  	memset(rspnid, 0, sizeof(struct fcgs_rspnid_req_s));

  
  	rspnid->dap = s_id;
  	rspnid->spn_len = (u8) strlen((char *)name);
  	strncpy((char *)rspnid->spn, (char *)name, rspnid->spn_len);

  	return sizeof(struct fcgs_rspnid_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16

  fc_gid_ft_build(struct fchs_s *fchs, void *pyld, u32 s_id, u8 fc4_type)

  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_gidft_req_s *gidft = (struct fcgs_gidft_req_s *)(cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  
  	fc_gs_cthdr_build(cthdr, s_id, GS_GID_FT);

  	memset(gidft, 0, sizeof(struct fcgs_gidft_req_s));

  	gidft->fc4_type = fc4_type;
  	gidft->domain_id = 0;
  	gidft->area_id = 0;

  	return sizeof(struct fcgs_gidft_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_rpnid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u32 port_id,
  	       wwn_t port_name)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_rpnid_req_s *rpnid = (struct fcgs_rpnid_req_s *)(cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  	fc_gs_cthdr_build(cthdr, s_id, GS_RPN_ID);

  	memset(rpnid, 0, sizeof(struct fcgs_rpnid_req_s));

  	rpnid->port_id = port_id;
  	rpnid->port_name = port_name;

  	return sizeof(struct fcgs_rpnid_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_rnnid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u32 port_id,
  	       wwn_t node_name)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_rnnid_req_s *rnnid = (struct fcgs_rnnid_req_s *)(cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  	fc_gs_cthdr_build(cthdr, s_id, GS_RNN_ID);

  	memset(rnnid, 0, sizeof(struct fcgs_rnnid_req_s));

  	rnnid->port_id = port_id;
  	rnnid->node_name = node_name;

  	return sizeof(struct fcgs_rnnid_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_rcsid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u32 port_id,
  	       u32 cos)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;

  	struct fcgs_rcsid_req_s *rcsid =
  			(struct fcgs_rcsid_req_s *) (cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  	fc_gs_cthdr_build(cthdr, s_id, GS_RCS_ID);

  	memset(rcsid, 0, sizeof(struct fcgs_rcsid_req_s));

  	rcsid->port_id = port_id;
  	rcsid->cos = cos;

  	return sizeof(struct fcgs_rcsid_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_rptid_build(struct fchs_s *fchs, void *pyld, u32 s_id, u32 port_id,
  	       u8 port_type)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_rptid_req_s *rptid = (struct fcgs_rptid_req_s *)(cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  	fc_gs_cthdr_build(cthdr, s_id, GS_RPT_ID);

  	memset(rptid, 0, sizeof(struct fcgs_rptid_req_s));

  	rptid->port_id = port_id;
  	rptid->port_type = port_type;

  	return sizeof(struct fcgs_rptid_req_s) + sizeof(struct ct_hdr_s);

  }
  
  u16
  fc_ganxt_build(struct fchs_s *fchs, void *pyld, u32 s_id, u32 port_id)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;
  	struct fcgs_ganxt_req_s *ganxt = (struct fcgs_ganxt_req_s *)(cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_NAME_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  	fc_gs_cthdr_build(cthdr, s_id, GS_GA_NXT);

  	memset(ganxt, 0, sizeof(struct fcgs_ganxt_req_s));

  	ganxt->port_id = port_id;

  	return sizeof(struct ct_hdr_s) + sizeof(struct fcgs_ganxt_req_s);

  }
  
  /*
   * Builds fc hdr and ct hdr for FDMI requests.
   */
  u16
  fc_fdmi_reqhdr_build(struct fchs_s *fchs, void *pyld, u32 s_id,
  		     u16 cmd_code)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;

  	u32        d_id = bfa_hton3b(FC_MGMT_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  	fc_gs_fdmi_cthdr_build(cthdr, s_id, cmd_code);

  	return sizeof(struct ct_hdr_s);

  }
  
  /*
   * Given a FC4 Type, this function returns a fc4 type bitmask
   */
  void
  fc_get_fc4type_bitmask(u8 fc4_type, u8 *bit_mask)
  {
  	u8         index;

  	__be32       *ptr = (__be32 *) bit_mask;

  	u32        type_value;
  
  	/*
  	 * @todo : Check for bitmask size
  	 */
  
  	index = fc4_type >> 5;
  	type_value = 1 << (fc4_type % 32);

  	ptr[index] = cpu_to_be32(type_value);

  
  }
  
  /*

   *	GMAL Request

   */
  u16
  fc_gmal_req_build(struct fchs_s *fchs, void *pyld, u32 s_id, wwn_t wwn)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;

  	fcgs_gmal_req_t *gmal = (fcgs_gmal_req_t *) (cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_MGMT_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  	fc_gs_ms_cthdr_build(cthdr, s_id, GS_FC_GMAL_CMD,
  			CT_GSSUBTYPE_CFGSERVER);

  	memset(gmal, 0, sizeof(fcgs_gmal_req_t));

  	gmal->wwn = wwn;

  	return sizeof(struct ct_hdr_s) + sizeof(fcgs_gmal_req_t);

  }
  
  /*
   * GFN (Get Fabric Name) Request
   */
  u16
  fc_gfn_req_build(struct fchs_s *fchs, void *pyld, u32 s_id, wwn_t wwn)
  {

  	struct ct_hdr_s *cthdr = (struct ct_hdr_s *) pyld;

  	fcgs_gfn_req_t *gfn = (fcgs_gfn_req_t *) (cthdr + 1);

  	u32        d_id = bfa_hton3b(FC_MGMT_SERVER);

  
  	fc_gs_fchdr_build(fchs, d_id, s_id, 0);
  	fc_gs_ms_cthdr_build(cthdr, s_id, GS_FC_GFN_CMD,
  			CT_GSSUBTYPE_CFGSERVER);

  	memset(gfn, 0, sizeof(fcgs_gfn_req_t));

  	gfn->wwn = wwn;

  	return sizeof(struct ct_hdr_s) + sizeof(fcgs_gfn_req_t);

  }