linux/include/scsi/fc_encode.h
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   1/*
   2 * Copyright(c) 2008 Intel Corporation. All rights reserved.
   3 *
   4 * This program is free software; you can redistribute it and/or modify it
   5 * under the terms and conditions of the GNU General Public License,
   6 * version 2, as published by the Free Software Foundation.
   7 *
   8 * This program is distributed in the hope it will be useful, but WITHOUT
   9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11 * more details.
  12 *
  13 * You should have received a copy of the GNU General Public License along with
  14 * this program; if not, write to the Free Software Foundation, Inc.,
  15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  16 *
  17 * Maintained at www.Open-FCoE.org
  18 */
  19
  20#ifndef _FC_ENCODE_H_
  21#define _FC_ENCODE_H_
  22#include <asm/unaligned.h>
  23#include <linux/utsname.h>
  24
  25/*
  26 * F_CTL values for simple requests and responses.
  27 */
  28#define FC_FCTL_REQ     (FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT)
  29#define FC_FCTL_RESP    (FC_FC_EX_CTX | FC_FC_LAST_SEQ | \
  30                        FC_FC_END_SEQ | FC_FC_SEQ_INIT)
  31
  32struct fc_ns_rft {
  33        struct fc_ns_fid fid;   /* port ID object */
  34        struct fc_ns_fts fts;   /* FC4-types object */
  35};
  36
  37struct fc_ct_req {
  38        struct fc_ct_hdr hdr;
  39        union {
  40                struct fc_ns_gid_ft gid;
  41                struct fc_ns_rn_id  rn;
  42                struct fc_ns_rft rft;
  43                struct fc_ns_rff_id rff;
  44                struct fc_ns_fid fid;
  45                struct fc_ns_rsnn snn;
  46                struct fc_ns_rspn spn;
  47                struct fc_fdmi_rhba rhba;
  48                struct fc_fdmi_rpa  rpa;
  49                struct fc_fdmi_dprt dprt;
  50                struct fc_fdmi_dhba dhba;
  51        } payload;
  52};
  53
  54static inline void __fc_fill_fc_hdr(struct fc_frame_header *fh,
  55                                    enum fc_rctl r_ctl,
  56                                    u32 did, u32 sid, enum fc_fh_type type,
  57                                    u32 f_ctl, u32 parm_offset)
  58{
  59        WARN_ON(r_ctl == 0);
  60        fh->fh_r_ctl = r_ctl;
  61        hton24(fh->fh_d_id, did);
  62        hton24(fh->fh_s_id, sid);
  63        fh->fh_type = type;
  64        hton24(fh->fh_f_ctl, f_ctl);
  65        fh->fh_cs_ctl = 0;
  66        fh->fh_df_ctl = 0;
  67        fh->fh_parm_offset = htonl(parm_offset);
  68}
  69
  70/**
  71 * fill FC header fields in specified fc_frame
  72 */
  73static inline void fc_fill_fc_hdr(struct fc_frame *fp, enum fc_rctl r_ctl,
  74                                  u32 did, u32 sid, enum fc_fh_type type,
  75                                  u32 f_ctl, u32 parm_offset)
  76{
  77        struct fc_frame_header *fh;
  78
  79        fh = fc_frame_header_get(fp);
  80        __fc_fill_fc_hdr(fh, r_ctl, did, sid, type, f_ctl, parm_offset);
  81}
  82
  83/**
  84 * fc_adisc_fill() - Fill in adisc request frame
  85 * @lport: local port.
  86 * @fp: fc frame where payload will be placed.
  87 */
  88static inline void fc_adisc_fill(struct fc_lport *lport, struct fc_frame *fp)
  89{
  90        struct fc_els_adisc *adisc;
  91
  92        adisc = fc_frame_payload_get(fp, sizeof(*adisc));
  93        memset(adisc, 0, sizeof(*adisc));
  94        adisc->adisc_cmd = ELS_ADISC;
  95        put_unaligned_be64(lport->wwpn, &adisc->adisc_wwpn);
  96        put_unaligned_be64(lport->wwnn, &adisc->adisc_wwnn);
  97        hton24(adisc->adisc_port_id, lport->port_id);
  98}
  99
 100/**
 101 * fc_ct_hdr_fill- fills ct header and reset ct payload
 102 * returns pointer to ct request.
 103 */
 104static inline struct fc_ct_req *fc_ct_hdr_fill(const struct fc_frame *fp,
 105                                               unsigned int op, size_t req_size,
 106                                               enum fc_ct_fs_type fs_type,
 107                                               u8 subtype)
 108{
 109        struct fc_ct_req *ct;
 110        size_t ct_plen;
 111
 112        ct_plen  = sizeof(struct fc_ct_hdr) + req_size;
 113        ct = fc_frame_payload_get(fp, ct_plen);
 114        memset(ct, 0, ct_plen);
 115        ct->hdr.ct_rev = FC_CT_REV;
 116        ct->hdr.ct_fs_type = fs_type;
 117        ct->hdr.ct_fs_subtype = subtype;
 118        ct->hdr.ct_cmd = htons((u16) op);
 119        return ct;
 120}
 121
 122/**
 123 * fc_ct_ns_fill() - Fill in a name service request frame
 124 * @lport: local port.
 125 * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 126 * @fp: frame to contain payload.
 127 * @op: CT opcode.
 128 * @r_ctl: pointer to FC header R_CTL.
 129 * @fh_type: pointer to FC-4 type.
 130 */
 131static inline int fc_ct_ns_fill(struct fc_lport *lport,
 132                      u32 fc_id, struct fc_frame *fp,
 133                      unsigned int op, enum fc_rctl *r_ctl,
 134                      enum fc_fh_type *fh_type)
 135{
 136        struct fc_ct_req *ct;
 137        size_t len;
 138
 139        switch (op) {
 140        case FC_NS_GPN_FT:
 141                ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_gid_ft),
 142                                    FC_FST_DIR, FC_NS_SUBTYPE);
 143                ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
 144                break;
 145
 146        case FC_NS_GPN_ID:
 147                ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_fid),
 148                                    FC_FST_DIR, FC_NS_SUBTYPE);
 149                ct->payload.gid.fn_fc4_type = FC_TYPE_FCP;
 150                hton24(ct->payload.fid.fp_fid, fc_id);
 151                break;
 152
 153        case FC_NS_RFT_ID:
 154                ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rft),
 155                                    FC_FST_DIR, FC_NS_SUBTYPE);
 156                hton24(ct->payload.rft.fid.fp_fid, lport->port_id);
 157                ct->payload.rft.fts = lport->fcts;
 158                break;
 159
 160        case FC_NS_RFF_ID:
 161                ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rff_id),
 162                                    FC_FST_DIR, FC_NS_SUBTYPE);
 163                hton24(ct->payload.rff.fr_fid.fp_fid, lport->port_id);
 164                ct->payload.rff.fr_type = FC_TYPE_FCP;
 165                if (lport->service_params & FCP_SPPF_INIT_FCN)
 166                        ct->payload.rff.fr_feat = FCP_FEAT_INIT;
 167                if (lport->service_params & FCP_SPPF_TARG_FCN)
 168                        ct->payload.rff.fr_feat |= FCP_FEAT_TARG;
 169                break;
 170
 171        case FC_NS_RNN_ID:
 172                ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rn_id),
 173                                    FC_FST_DIR, FC_NS_SUBTYPE);
 174                hton24(ct->payload.rn.fr_fid.fp_fid, lport->port_id);
 175                put_unaligned_be64(lport->wwnn, &ct->payload.rn.fr_wwn);
 176                break;
 177
 178        case FC_NS_RSPN_ID:
 179                len = strnlen(fc_host_symbolic_name(lport->host), 255);
 180                ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len,
 181                                    FC_FST_DIR, FC_NS_SUBTYPE);
 182                hton24(ct->payload.spn.fr_fid.fp_fid, lport->port_id);
 183                strncpy(ct->payload.spn.fr_name,
 184                        fc_host_symbolic_name(lport->host), len);
 185                ct->payload.spn.fr_name_len = len;
 186                break;
 187
 188        case FC_NS_RSNN_NN:
 189                len = strnlen(fc_host_symbolic_name(lport->host), 255);
 190                ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len,
 191                                    FC_FST_DIR, FC_NS_SUBTYPE);
 192                put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
 193                strncpy(ct->payload.snn.fr_name,
 194                        fc_host_symbolic_name(lport->host), len);
 195                ct->payload.snn.fr_name_len = len;
 196                break;
 197
 198        default:
 199                return -EINVAL;
 200        }
 201        *r_ctl = FC_RCTL_DD_UNSOL_CTL;
 202        *fh_type = FC_TYPE_CT;
 203        return 0;
 204}
 205
 206/**
 207 * fc_ct_ms_fill() - Fill in a mgmt service request frame
 208 * @lport: local port.
 209 * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 210 * @fp: frame to contain payload.
 211 * @op: CT opcode.
 212 * @r_ctl: pointer to FC header R_CTL.
 213 * @fh_type: pointer to FC-4 type.
 214 */
 215static inline int fc_ct_ms_fill(struct fc_lport *lport,
 216                      u32 fc_id, struct fc_frame *fp,
 217                      unsigned int op, enum fc_rctl *r_ctl,
 218                      enum fc_fh_type *fh_type)
 219{
 220        struct fc_ct_req *ct;
 221        size_t len;
 222        struct fc_fdmi_attr_entry *entry;
 223        struct fs_fdmi_attrs *hba_attrs;
 224        int numattrs = 0;
 225
 226        switch (op) {
 227        case FC_FDMI_RHBA:
 228                numattrs = 10;
 229                len = sizeof(struct fc_fdmi_rhba);
 230                len -= sizeof(struct fc_fdmi_attr_entry);
 231                len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
 232                len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
 233                len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
 234                len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
 235                len += FC_FDMI_HBA_ATTR_MODEL_LEN;
 236                len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
 237                len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
 238                len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
 239                len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
 240                len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
 241                len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
 242                ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 243                                    FC_FDMI_SUBTYPE);
 244
 245                /* HBA Identifier */
 246                put_unaligned_be64(lport->wwpn, &ct->payload.rhba.hbaid.id);
 247                /* Number of Ports - always 1 */
 248                put_unaligned_be32(1, &ct->payload.rhba.port.numport);
 249                /* Port Name */
 250                put_unaligned_be64(lport->wwpn,
 251                                   &ct->payload.rhba.port.port[0].portname);
 252
 253                /* HBA Attributes */
 254                put_unaligned_be32(numattrs,
 255                                   &ct->payload.rhba.hba_attrs.numattrs);
 256                hba_attrs = &ct->payload.rhba.hba_attrs;
 257                entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;
 258                /* NodeName*/
 259                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 260                len += FC_FDMI_HBA_ATTR_NODENAME_LEN;
 261                put_unaligned_be16(FC_FDMI_HBA_ATTR_NODENAME,
 262                                   &entry->type);
 263                put_unaligned_be16(len, &entry->len);
 264                put_unaligned_be64(lport->wwnn,
 265                                   (__be64 *)&entry->value[0]);
 266
 267                /* Manufacturer */
 268                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 269                                        FC_FDMI_HBA_ATTR_NODENAME_LEN);
 270                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 271                len += FC_FDMI_HBA_ATTR_MANUFACTURER_LEN;
 272                put_unaligned_be16(FC_FDMI_HBA_ATTR_MANUFACTURER,
 273                                   &entry->type);
 274                put_unaligned_be16(len, &entry->len);
 275                strncpy((char *)&entry->value,
 276                        fc_host_manufacturer(lport->host),
 277                        FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);
 278
 279                /* SerialNumber */
 280                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 281                                        FC_FDMI_HBA_ATTR_MANUFACTURER_LEN);
 282                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 283                len += FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN;
 284                put_unaligned_be16(FC_FDMI_HBA_ATTR_SERIALNUMBER,
 285                                   &entry->type);
 286                put_unaligned_be16(len, &entry->len);
 287                strncpy((char *)&entry->value,
 288                        fc_host_serial_number(lport->host),
 289                        FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);
 290
 291                /* Model */
 292                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 293                                        FC_FDMI_HBA_ATTR_SERIALNUMBER_LEN);
 294                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 295                len += FC_FDMI_HBA_ATTR_MODEL_LEN;
 296                put_unaligned_be16(FC_FDMI_HBA_ATTR_MODEL,
 297                                   &entry->type);
 298                put_unaligned_be16(len, &entry->len);
 299                strncpy((char *)&entry->value,
 300                        fc_host_model(lport->host),
 301                        FC_FDMI_HBA_ATTR_MODEL_LEN);
 302
 303                /* Model Description */
 304                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 305                                        FC_FDMI_HBA_ATTR_MODEL_LEN);
 306                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 307                len += FC_FDMI_HBA_ATTR_MODELDESCR_LEN;
 308                put_unaligned_be16(FC_FDMI_HBA_ATTR_MODELDESCRIPTION,
 309                                   &entry->type);
 310                put_unaligned_be16(len, &entry->len);
 311                strncpy((char *)&entry->value,
 312                        fc_host_model_description(lport->host),
 313                        FC_FDMI_HBA_ATTR_MODELDESCR_LEN);
 314
 315                /* Hardware Version */
 316                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 317                                        FC_FDMI_HBA_ATTR_MODELDESCR_LEN);
 318                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 319                len += FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN;
 320                put_unaligned_be16(FC_FDMI_HBA_ATTR_HARDWAREVERSION,
 321                                   &entry->type);
 322                put_unaligned_be16(len, &entry->len);
 323                strncpy((char *)&entry->value,
 324                        fc_host_hardware_version(lport->host),
 325                        FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);
 326
 327                /* Driver Version */
 328                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 329                                        FC_FDMI_HBA_ATTR_HARDWAREVERSION_LEN);
 330                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 331                len += FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN;
 332                put_unaligned_be16(FC_FDMI_HBA_ATTR_DRIVERVERSION,
 333                                   &entry->type);
 334                put_unaligned_be16(len, &entry->len);
 335                strncpy((char *)&entry->value,
 336                        fc_host_driver_version(lport->host),
 337                        FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);
 338
 339                /* OptionROM Version */
 340                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 341                                        FC_FDMI_HBA_ATTR_DRIVERVERSION_LEN);
 342                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 343                len += FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN;
 344                put_unaligned_be16(FC_FDMI_HBA_ATTR_OPTIONROMVERSION,
 345                                   &entry->type);
 346                put_unaligned_be16(len, &entry->len);
 347                strncpy((char *)&entry->value,
 348                        fc_host_optionrom_version(lport->host),
 349                        FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);
 350
 351                /* Firmware Version */
 352                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 353                                        FC_FDMI_HBA_ATTR_OPTIONROMVERSION_LEN);
 354                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 355                len += FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN;
 356                put_unaligned_be16(FC_FDMI_HBA_ATTR_FIRMWAREVERSION,
 357                                   &entry->type);
 358                put_unaligned_be16(len, &entry->len);
 359                strncpy((char *)&entry->value,
 360                        fc_host_firmware_version(lport->host),
 361                        FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);
 362
 363                /* OS Name and Version */
 364                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 365                                        FC_FDMI_HBA_ATTR_FIRMWAREVERSION_LEN);
 366                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 367                len += FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN;
 368                put_unaligned_be16(FC_FDMI_HBA_ATTR_OSNAMEVERSION,
 369                                   &entry->type);
 370                put_unaligned_be16(len, &entry->len);
 371                snprintf((char *)&entry->value,
 372                        FC_FDMI_HBA_ATTR_OSNAMEVERSION_LEN,
 373                        "%s v%s",
 374                        init_utsname()->sysname,
 375                        init_utsname()->release);
 376                break;
 377        case FC_FDMI_RPA:
 378                numattrs = 6;
 379                len = sizeof(struct fc_fdmi_rpa);
 380                len -= sizeof(struct fc_fdmi_attr_entry);
 381                len += (numattrs * FC_FDMI_ATTR_ENTRY_HEADER_LEN);
 382                len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
 383                len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
 384                len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
 385                len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
 386                len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
 387                len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
 388                ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 389                                    FC_FDMI_SUBTYPE);
 390
 391                /* Port Name */
 392                put_unaligned_be64(lport->wwpn,
 393                                   &ct->payload.rpa.port.portname);
 394
 395                /* Port Attributes */
 396                put_unaligned_be32(numattrs,
 397                                   &ct->payload.rpa.hba_attrs.numattrs);
 398
 399                hba_attrs = &ct->payload.rpa.hba_attrs;
 400                entry = (struct fc_fdmi_attr_entry *)hba_attrs->attr;
 401
 402                /* FC4 types */
 403                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 404                len += FC_FDMI_PORT_ATTR_FC4TYPES_LEN;
 405                put_unaligned_be16(FC_FDMI_PORT_ATTR_FC4TYPES,
 406                                   &entry->type);
 407                put_unaligned_be16(len, &entry->len);
 408                memcpy(&entry->value, fc_host_supported_fc4s(lport->host),
 409                       FC_FDMI_PORT_ATTR_FC4TYPES_LEN);
 410
 411                /* Supported Speed */
 412                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 413                                        FC_FDMI_PORT_ATTR_FC4TYPES_LEN);
 414                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 415                len += FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN;
 416                put_unaligned_be16(FC_FDMI_PORT_ATTR_SUPPORTEDSPEED,
 417                                   &entry->type);
 418                put_unaligned_be16(len, &entry->len);
 419
 420                put_unaligned_be32(fc_host_supported_speeds(lport->host),
 421                                   &entry->value);
 422
 423                /* Current Port Speed */
 424                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 425                                        FC_FDMI_PORT_ATTR_SUPPORTEDSPEED_LEN);
 426                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 427                len += FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN;
 428                put_unaligned_be16(FC_FDMI_PORT_ATTR_CURRENTPORTSPEED,
 429                                   &entry->type);
 430                put_unaligned_be16(len, &entry->len);
 431                put_unaligned_be32(lport->link_speed,
 432                                   &entry->value);
 433
 434                /* Max Frame Size */
 435                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 436                                        FC_FDMI_PORT_ATTR_CURRENTPORTSPEED_LEN);
 437                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 438                len += FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN;
 439                put_unaligned_be16(FC_FDMI_PORT_ATTR_MAXFRAMESIZE,
 440                                   &entry->type);
 441                put_unaligned_be16(len, &entry->len);
 442                put_unaligned_be32(fc_host_maxframe_size(lport->host),
 443                                   &entry->value);
 444
 445                /* OS Device Name */
 446                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 447                                        FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN);
 448                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 449                len += FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN;
 450                put_unaligned_be16(FC_FDMI_PORT_ATTR_OSDEVICENAME,
 451                                   &entry->type);
 452                put_unaligned_be16(len, &entry->len);
 453                /* Use the sysfs device name */
 454                strncpy((char *)&entry->value,
 455                        dev_name(&lport->host->shost_gendev),
 456                        strnlen(dev_name(&lport->host->shost_gendev),
 457                                FC_FDMI_PORT_ATTR_HOSTNAME_LEN));
 458
 459                /* Host Name */
 460                entry = (struct fc_fdmi_attr_entry *)((char *)entry->value +
 461                                        FC_FDMI_PORT_ATTR_OSDEVICENAME_LEN);
 462                len = FC_FDMI_ATTR_ENTRY_HEADER_LEN;
 463                len += FC_FDMI_PORT_ATTR_HOSTNAME_LEN;
 464                put_unaligned_be16(FC_FDMI_PORT_ATTR_HOSTNAME,
 465                                   &entry->type);
 466                put_unaligned_be16(len, &entry->len);
 467                if (strlen(fc_host_system_hostname(lport->host)))
 468                        strncpy((char *)&entry->value,
 469                                fc_host_system_hostname(lport->host),
 470                                strnlen(fc_host_system_hostname(lport->host),
 471                                        FC_FDMI_PORT_ATTR_HOSTNAME_LEN));
 472                else
 473                        strncpy((char *)&entry->value,
 474                                init_utsname()->nodename,
 475                                FC_FDMI_PORT_ATTR_HOSTNAME_LEN);
 476                break;
 477        case FC_FDMI_DPRT:
 478                len = sizeof(struct fc_fdmi_dprt);
 479                ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 480                                    FC_FDMI_SUBTYPE);
 481                /* Port Name */
 482                put_unaligned_be64(lport->wwpn,
 483                                   &ct->payload.dprt.port.portname);
 484                break;
 485        case FC_FDMI_DHBA:
 486                len = sizeof(struct fc_fdmi_dhba);
 487                ct = fc_ct_hdr_fill(fp, op, len, FC_FST_MGMT,
 488                                    FC_FDMI_SUBTYPE);
 489                /* HBA Identifier */
 490                put_unaligned_be64(lport->wwpn, &ct->payload.dhba.hbaid.id);
 491                break;
 492        default:
 493                return -EINVAL;
 494        }
 495        *r_ctl = FC_RCTL_DD_UNSOL_CTL;
 496        *fh_type = FC_TYPE_CT;
 497        return 0;
 498}
 499
 500/**
 501 * fc_ct_fill() - Fill in a common transport service request frame
 502 * @lport: local port.
 503 * @fc_id: FC_ID of non-destination rport for GPN_ID and similar inquiries.
 504 * @fp: frame to contain payload.
 505 * @op: CT opcode.
 506 * @r_ctl: pointer to FC header R_CTL.
 507 * @fh_type: pointer to FC-4 type.
 508 */
 509static inline int fc_ct_fill(struct fc_lport *lport,
 510                      u32 fc_id, struct fc_frame *fp,
 511                      unsigned int op, enum fc_rctl *r_ctl,
 512                      enum fc_fh_type *fh_type, u32 *did)
 513{
 514        int rc = -EINVAL;
 515
 516        switch (fc_id) {
 517        case FC_FID_MGMT_SERV:
 518                rc = fc_ct_ms_fill(lport, fc_id, fp, op, r_ctl, fh_type);
 519                *did = FC_FID_MGMT_SERV;
 520                break;
 521        case FC_FID_DIR_SERV:
 522        default:
 523                rc = fc_ct_ns_fill(lport, fc_id, fp, op, r_ctl, fh_type);
 524                *did = FC_FID_DIR_SERV;
 525                break;
 526        }
 527
 528        return rc;
 529}
 530/**
 531 * fc_plogi_fill - Fill in plogi request frame
 532 */
 533static inline void fc_plogi_fill(struct fc_lport *lport, struct fc_frame *fp,
 534                                 unsigned int op)
 535{
 536        struct fc_els_flogi *plogi;
 537        struct fc_els_csp *csp;
 538        struct fc_els_cssp *cp;
 539
 540        plogi = fc_frame_payload_get(fp, sizeof(*plogi));
 541        memset(plogi, 0, sizeof(*plogi));
 542        plogi->fl_cmd = (u8) op;
 543        put_unaligned_be64(lport->wwpn, &plogi->fl_wwpn);
 544        put_unaligned_be64(lport->wwnn, &plogi->fl_wwnn);
 545
 546        csp = &plogi->fl_csp;
 547        csp->sp_hi_ver = 0x20;
 548        csp->sp_lo_ver = 0x20;
 549        csp->sp_bb_cred = htons(10);    /* this gets set by gateway */
 550        csp->sp_bb_data = htons((u16) lport->mfs);
 551        cp = &plogi->fl_cssp[3 - 1];    /* class 3 parameters */
 552        cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 553        csp->sp_features = htons(FC_SP_FT_CIRO);
 554        csp->sp_tot_seq = htons(255);   /* seq. we accept */
 555        csp->sp_rel_off = htons(0x1f);
 556        csp->sp_e_d_tov = htonl(lport->e_d_tov);
 557
 558        cp->cp_rdfs = htons((u16) lport->mfs);
 559        cp->cp_con_seq = htons(255);
 560        cp->cp_open_seq = 1;
 561}
 562
 563/**
 564 * fc_flogi_fill - Fill in a flogi request frame.
 565 */
 566static inline void fc_flogi_fill(struct fc_lport *lport, struct fc_frame *fp)
 567{
 568        struct fc_els_csp *sp;
 569        struct fc_els_cssp *cp;
 570        struct fc_els_flogi *flogi;
 571
 572        flogi = fc_frame_payload_get(fp, sizeof(*flogi));
 573        memset(flogi, 0, sizeof(*flogi));
 574        flogi->fl_cmd = (u8) ELS_FLOGI;
 575        put_unaligned_be64(lport->wwpn, &flogi->fl_wwpn);
 576        put_unaligned_be64(lport->wwnn, &flogi->fl_wwnn);
 577        sp = &flogi->fl_csp;
 578        sp->sp_hi_ver = 0x20;
 579        sp->sp_lo_ver = 0x20;
 580        sp->sp_bb_cred = htons(10);     /* this gets set by gateway */
 581        sp->sp_bb_data = htons((u16) lport->mfs);
 582        cp = &flogi->fl_cssp[3 - 1];    /* class 3 parameters */
 583        cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 584        if (lport->does_npiv)
 585                sp->sp_features = htons(FC_SP_FT_NPIV);
 586}
 587
 588/**
 589 * fc_fdisc_fill - Fill in a fdisc request frame.
 590 */
 591static inline void fc_fdisc_fill(struct fc_lport *lport, struct fc_frame *fp)
 592{
 593        struct fc_els_csp *sp;
 594        struct fc_els_cssp *cp;
 595        struct fc_els_flogi *fdisc;
 596
 597        fdisc = fc_frame_payload_get(fp, sizeof(*fdisc));
 598        memset(fdisc, 0, sizeof(*fdisc));
 599        fdisc->fl_cmd = (u8) ELS_FDISC;
 600        put_unaligned_be64(lport->wwpn, &fdisc->fl_wwpn);
 601        put_unaligned_be64(lport->wwnn, &fdisc->fl_wwnn);
 602        sp = &fdisc->fl_csp;
 603        sp->sp_hi_ver = 0x20;
 604        sp->sp_lo_ver = 0x20;
 605        sp->sp_bb_cred = htons(10);     /* this gets set by gateway */
 606        sp->sp_bb_data = htons((u16) lport->mfs);
 607        cp = &fdisc->fl_cssp[3 - 1];    /* class 3 parameters */
 608        cp->cp_class = htons(FC_CPC_VALID | FC_CPC_SEQ);
 609}
 610
 611/**
 612 * fc_logo_fill - Fill in a logo request frame.
 613 */
 614static inline void fc_logo_fill(struct fc_lport *lport, struct fc_frame *fp)
 615{
 616        struct fc_els_logo *logo;
 617
 618        logo = fc_frame_payload_get(fp, sizeof(*logo));
 619        memset(logo, 0, sizeof(*logo));
 620        logo->fl_cmd = ELS_LOGO;
 621        hton24(logo->fl_n_port_id, lport->port_id);
 622        logo->fl_n_port_wwn = htonll(lport->wwpn);
 623}
 624
 625/**
 626 * fc_rtv_fill - Fill in RTV (read timeout value) request frame.
 627 */
 628static inline void fc_rtv_fill(struct fc_lport *lport, struct fc_frame *fp)
 629{
 630        struct fc_els_rtv *rtv;
 631
 632        rtv = fc_frame_payload_get(fp, sizeof(*rtv));
 633        memset(rtv, 0, sizeof(*rtv));
 634        rtv->rtv_cmd = ELS_RTV;
 635}
 636
 637/**
 638 * fc_rec_fill - Fill in rec request frame
 639 */
 640static inline void fc_rec_fill(struct fc_lport *lport, struct fc_frame *fp)
 641{
 642        struct fc_els_rec *rec;
 643        struct fc_exch *ep = fc_seq_exch(fr_seq(fp));
 644
 645        rec = fc_frame_payload_get(fp, sizeof(*rec));
 646        memset(rec, 0, sizeof(*rec));
 647        rec->rec_cmd = ELS_REC;
 648        hton24(rec->rec_s_id, lport->port_id);
 649        rec->rec_ox_id = htons(ep->oxid);
 650        rec->rec_rx_id = htons(ep->rxid);
 651}
 652
 653/**
 654 * fc_prli_fill - Fill in prli request frame
 655 */
 656static inline void fc_prli_fill(struct fc_lport *lport, struct fc_frame *fp)
 657{
 658        struct {
 659                struct fc_els_prli prli;
 660                struct fc_els_spp spp;
 661        } *pp;
 662
 663        pp = fc_frame_payload_get(fp, sizeof(*pp));
 664        memset(pp, 0, sizeof(*pp));
 665        pp->prli.prli_cmd = ELS_PRLI;
 666        pp->prli.prli_spp_len = sizeof(struct fc_els_spp);
 667        pp->prli.prli_len = htons(sizeof(*pp));
 668        pp->spp.spp_type = FC_TYPE_FCP;
 669        pp->spp.spp_flags = FC_SPP_EST_IMG_PAIR;
 670        pp->spp.spp_params = htonl(lport->service_params);
 671}
 672
 673/**
 674 * fc_scr_fill - Fill in a scr request frame.
 675 */
 676static inline void fc_scr_fill(struct fc_lport *lport, struct fc_frame *fp)
 677{
 678        struct fc_els_scr *scr;
 679
 680        scr = fc_frame_payload_get(fp, sizeof(*scr));
 681        memset(scr, 0, sizeof(*scr));
 682        scr->scr_cmd = ELS_SCR;
 683        scr->scr_reg_func = ELS_SCRF_FULL;
 684}
 685
 686/**
 687 * fc_els_fill - Fill in an ELS  request frame
 688 */
 689static inline int fc_els_fill(struct fc_lport *lport,
 690                       u32 did,
 691                       struct fc_frame *fp, unsigned int op,
 692                       enum fc_rctl *r_ctl, enum fc_fh_type *fh_type)
 693{
 694        switch (op) {
 695        case ELS_ADISC:
 696                fc_adisc_fill(lport, fp);
 697                break;
 698
 699        case ELS_PLOGI:
 700                fc_plogi_fill(lport, fp, ELS_PLOGI);
 701                break;
 702
 703        case ELS_FLOGI:
 704                fc_flogi_fill(lport, fp);
 705                break;
 706
 707        case ELS_FDISC:
 708                fc_fdisc_fill(lport, fp);
 709                break;
 710
 711        case ELS_LOGO:
 712                fc_logo_fill(lport, fp);
 713                break;
 714
 715        case ELS_RTV:
 716                fc_rtv_fill(lport, fp);
 717                break;
 718
 719        case ELS_REC:
 720                fc_rec_fill(lport, fp);
 721                break;
 722
 723        case ELS_PRLI:
 724                fc_prli_fill(lport, fp);
 725                break;
 726
 727        case ELS_SCR:
 728                fc_scr_fill(lport, fp);
 729                break;
 730
 731        default:
 732                return -EINVAL;
 733        }
 734
 735        *r_ctl = FC_RCTL_ELS_REQ;
 736        *fh_type = FC_TYPE_ELS;
 737        return 0;
 738}
 739#endif /* _FC_ENCODE_H_ */
 740
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