[SCSI] libsas: let libata handle command timeouts
[linux-2.6.git] / include / scsi / fc_encode.h
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
32 struct fc_ns_rft {
33         struct fc_ns_fid fid;   /* port ID object */
34         struct fc_ns_fts fts;   /* FC4-types object */
35 };
36
37 struct 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
54 static 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  */
73 static 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  */
88 static 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  */
104 static 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  */
131 static 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  */
215 static 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  */
509 static 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  */
533 static 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  */
566 static 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  */
591 static 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  */
614 static 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  */
628 static 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  */
640 static 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  */
656 static 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  */
676 static 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  */
689 static 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_ */