1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * zfcp device driver |
4 | * |
5 | * Interface to the FSF support functions. |
6 | * |
7 | * Copyright IBM Corp. 2002, 2020 |
8 | */ |
9 | |
10 | #ifndef FSF_H |
11 | #define FSF_H |
12 | |
13 | #include <linux/pfn.h> |
14 | #include <linux/scatterlist.h> |
15 | #include <scsi/libfc.h> |
16 | |
17 | #define FSF_QTCB_CURRENT_VERSION 0x00000001 |
18 | |
19 | /* FSF commands */ |
20 | #define FSF_QTCB_FCP_CMND 0x00000001 |
21 | #define FSF_QTCB_ABORT_FCP_CMND 0x00000002 |
22 | #define FSF_QTCB_OPEN_PORT_WITH_DID 0x00000005 |
23 | #define FSF_QTCB_OPEN_LUN 0x00000006 |
24 | #define FSF_QTCB_CLOSE_LUN 0x00000007 |
25 | #define FSF_QTCB_CLOSE_PORT 0x00000008 |
26 | #define FSF_QTCB_CLOSE_PHYSICAL_PORT 0x00000009 |
27 | #define FSF_QTCB_SEND_ELS 0x0000000B |
28 | #define FSF_QTCB_SEND_GENERIC 0x0000000C |
29 | #define FSF_QTCB_EXCHANGE_CONFIG_DATA 0x0000000D |
30 | #define FSF_QTCB_EXCHANGE_PORT_DATA 0x0000000E |
31 | #define FSF_QTCB_DOWNLOAD_CONTROL_FILE 0x00000012 |
32 | #define FSF_QTCB_UPLOAD_CONTROL_FILE 0x00000013 |
33 | |
34 | /* FSF QTCB types */ |
35 | #define FSF_IO_COMMAND 0x00000001 |
36 | #define FSF_SUPPORT_COMMAND 0x00000002 |
37 | #define FSF_CONFIG_COMMAND 0x00000003 |
38 | #define FSF_PORT_COMMAND 0x00000004 |
39 | |
40 | /* FSF protocol states */ |
41 | #define FSF_PROT_GOOD 0x00000001 |
42 | #define FSF_PROT_QTCB_VERSION_ERROR 0x00000010 |
43 | #define FSF_PROT_SEQ_NUMB_ERROR 0x00000020 |
44 | #define FSF_PROT_UNSUPP_QTCB_TYPE 0x00000040 |
45 | #define FSF_PROT_HOST_CONNECTION_INITIALIZING 0x00000080 |
46 | #define FSF_PROT_FSF_STATUS_PRESENTED 0x00000100 |
47 | #define FSF_PROT_DUPLICATE_REQUEST_ID 0x00000200 |
48 | #define FSF_PROT_LINK_DOWN 0x00000400 |
49 | #define FSF_PROT_REEST_QUEUE 0x00000800 |
50 | #define FSF_PROT_ERROR_STATE 0x01000000 |
51 | |
52 | /* FSF states */ |
53 | #define FSF_GOOD 0x00000000 |
54 | #define FSF_PORT_ALREADY_OPEN 0x00000001 |
55 | #define FSF_LUN_ALREADY_OPEN 0x00000002 |
56 | #define FSF_PORT_HANDLE_NOT_VALID 0x00000003 |
57 | #define FSF_LUN_HANDLE_NOT_VALID 0x00000004 |
58 | #define FSF_HANDLE_MISMATCH 0x00000005 |
59 | #define FSF_SERVICE_CLASS_NOT_SUPPORTED 0x00000006 |
60 | #define FSF_FCPLUN_NOT_VALID 0x00000009 |
61 | #define FSF_LUN_SHARING_VIOLATION 0x00000012 |
62 | #define FSF_FCP_COMMAND_DOES_NOT_EXIST 0x00000022 |
63 | #define FSF_DIRECTION_INDICATOR_NOT_VALID 0x00000030 |
64 | #define FSF_CMND_LENGTH_NOT_VALID 0x00000033 |
65 | #define FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED 0x00000040 |
66 | #define FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED 0x00000041 |
67 | #define FSF_ELS_COMMAND_REJECTED 0x00000050 |
68 | #define FSF_GENERIC_COMMAND_REJECTED 0x00000051 |
69 | #define FSF_PORT_BOXED 0x00000059 |
70 | #define FSF_LUN_BOXED 0x0000005A |
71 | #define FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE 0x0000005B |
72 | #define FSF_PAYLOAD_SIZE_MISMATCH 0x00000060 |
73 | #define FSF_REQUEST_SIZE_TOO_LARGE 0x00000061 |
74 | #define FSF_RESPONSE_SIZE_TOO_LARGE 0x00000062 |
75 | #define FSF_SBAL_MISMATCH 0x00000063 |
76 | #define FSF_INCONSISTENT_PROT_DATA 0x00000070 |
77 | #define FSF_INVALID_PROT_PARM 0x00000071 |
78 | #define FSF_BLOCK_GUARD_CHECK_FAILURE 0x00000081 |
79 | #define FSF_APP_TAG_CHECK_FAILURE 0x00000082 |
80 | #define FSF_REF_TAG_CHECK_FAILURE 0x00000083 |
81 | #define FSF_SECURITY_ERROR 0x00000090 |
82 | #define FSF_ADAPTER_STATUS_AVAILABLE 0x000000AD |
83 | #define FSF_FCP_RSP_AVAILABLE 0x000000AF |
84 | #define FSF_UNKNOWN_COMMAND 0x000000E2 |
85 | #define FSF_UNKNOWN_OP_SUBTYPE 0x000000E3 |
86 | #define FSF_INVALID_COMMAND_OPTION 0x000000E5 |
87 | |
88 | #define FSF_PROT_STATUS_QUAL_SIZE 16 |
89 | #define FSF_STATUS_QUALIFIER_SIZE 16 |
90 | |
91 | /* FSF status qualifier, recommendations */ |
92 | #define FSF_SQ_NO_RECOM 0x00 |
93 | #define FSF_SQ_FCP_RSP_AVAILABLE 0x01 |
94 | #define FSF_SQ_RETRY_IF_POSSIBLE 0x02 |
95 | #define FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED 0x03 |
96 | #define FSF_SQ_INVOKE_LINK_TEST_PROCEDURE 0x04 |
97 | #define FSF_SQ_COMMAND_ABORTED 0x06 |
98 | #define FSF_SQ_NO_RETRY_POSSIBLE 0x07 |
99 | |
100 | /* FSF status qualifier (most significant 4 bytes), local link down */ |
101 | #define FSF_PSQ_LINK_NO_LIGHT 0x00000004 |
102 | #define FSF_PSQ_LINK_WRAP_PLUG 0x00000008 |
103 | #define FSF_PSQ_LINK_NO_FCP 0x00000010 |
104 | #define FSF_PSQ_LINK_FIRMWARE_UPDATE 0x00000020 |
105 | #define FSF_PSQ_LINK_INVALID_WWPN 0x00000100 |
106 | #define FSF_PSQ_LINK_NO_NPIV_SUPPORT 0x00000200 |
107 | #define FSF_PSQ_LINK_NO_FCP_RESOURCES 0x00000400 |
108 | #define FSF_PSQ_LINK_NO_FABRIC_RESOURCES 0x00000800 |
109 | #define FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE 0x00001000 |
110 | #define FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED 0x00002000 |
111 | #define FSF_PSQ_LINK_MODE_TABLE_CURRUPTED 0x00004000 |
112 | #define FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT 0x00008000 |
113 | |
114 | /* FSF status qualifier, security error */ |
115 | #define FSF_SQ_SECURITY_REQUIRED 0x00000001 |
116 | #define FSF_SQ_SECURITY_TIMEOUT 0x00000002 |
117 | #define FSF_SQ_SECURITY_KM_UNAVAILABLE 0x00000003 |
118 | #define FSF_SQ_SECURITY_RKM_UNAVAILABLE 0x00000004 |
119 | #define FSF_SQ_SECURITY_AUTH_FAILURE 0x00000005 |
120 | #define FSF_SQ_SECURITY_ENC_FAILURE 0x00000010 |
121 | |
122 | /* payload size in status read buffer */ |
123 | #define FSF_STATUS_READ_PAYLOAD_SIZE 4032 |
124 | |
125 | /* number of status read buffers that should be sent by ULP */ |
126 | #define FSF_STATUS_READS_RECOM 16 |
127 | |
128 | /* status types in status read buffer */ |
129 | #define FSF_STATUS_READ_PORT_CLOSED 0x00000001 |
130 | #define FSF_STATUS_READ_INCOMING_ELS 0x00000002 |
131 | #define FSF_STATUS_READ_SENSE_DATA_AVAIL 0x00000003 |
132 | #define FSF_STATUS_READ_BIT_ERROR_THRESHOLD 0x00000004 |
133 | #define FSF_STATUS_READ_LINK_DOWN 0x00000005 |
134 | #define FSF_STATUS_READ_LINK_UP 0x00000006 |
135 | #define FSF_STATUS_READ_NOTIFICATION_LOST 0x00000009 |
136 | #define FSF_STATUS_READ_FEATURE_UPDATE_ALERT 0x0000000C |
137 | #define FSF_STATUS_READ_VERSION_CHANGE 0x0000000D |
138 | |
139 | /* status subtypes for link down */ |
140 | #define FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK 0x00000000 |
141 | #define FSF_STATUS_READ_SUB_FDISC_FAILED 0x00000001 |
142 | #define FSF_STATUS_READ_SUB_FIRMWARE_UPDATE 0x00000002 |
143 | |
144 | /* status subtypes for unsolicited status notification lost */ |
145 | #define FSF_STATUS_READ_SUB_INCOMING_ELS 0x00000001 |
146 | #define FSF_STATUS_READ_SUB_VERSION_CHANGE 0x00000100 |
147 | |
148 | /* status subtypes for version change */ |
149 | #define FSF_STATUS_READ_SUB_LIC_CHANGE 0x00000001 |
150 | |
151 | /* topologie that is detected by the adapter */ |
152 | #define FSF_TOPO_P2P 0x00000001 |
153 | #define FSF_TOPO_FABRIC 0x00000002 |
154 | #define FSF_TOPO_AL 0x00000003 |
155 | |
156 | /* data direction for FCP commands */ |
157 | #define FSF_DATADIR_WRITE 0x00000001 |
158 | #define FSF_DATADIR_READ 0x00000002 |
159 | #define FSF_DATADIR_CMND 0x00000004 |
160 | #define FSF_DATADIR_DIF_WRITE_INSERT 0x00000009 |
161 | #define FSF_DATADIR_DIF_READ_STRIP 0x0000000a |
162 | #define FSF_DATADIR_DIF_WRITE_CONVERT 0x0000000b |
163 | #define FSF_DATADIR_DIF_READ_CONVERT 0X0000000c |
164 | |
165 | /* data protection control flags */ |
166 | #define FSF_APP_TAG_CHECK_ENABLE 0x10 |
167 | |
168 | /* fc service class */ |
169 | #define FSF_CLASS_3 0x00000003 |
170 | |
171 | /* logging space behind QTCB */ |
172 | #define FSF_QTCB_LOG_SIZE 1024 |
173 | |
174 | /* channel features */ |
175 | #define FSF_FEATURE_NOTIFICATION_LOST 0x00000008 |
176 | #define FSF_FEATURE_HBAAPI_MANAGEMENT 0x00000010 |
177 | #define FSF_FEATURE_ELS_CT_CHAINED_SBALS 0x00000020 |
178 | #define FSF_FEATURE_UPDATE_ALERT 0x00000100 |
179 | #define FSF_FEATURE_MEASUREMENT_DATA 0x00000200 |
180 | #define FSF_FEATURE_REQUEST_SFP_DATA 0x00000200 |
181 | #define FSF_FEATURE_REPORT_SFP_DATA 0x00000800 |
182 | #define FSF_FEATURE_FC_SECURITY 0x00001000 |
183 | #define FSF_FEATURE_DIF_PROT_TYPE1 0x00010000 |
184 | #define FSF_FEATURE_DIX_PROT_TCPIP 0x00020000 |
185 | |
186 | /* host connection features */ |
187 | #define FSF_FEATURE_NPIV_MODE 0x00000001 |
188 | |
189 | /* option */ |
190 | #define FSF_OPEN_LUN_SUPPRESS_BOXING 0x00000001 |
191 | |
192 | /* FC security algorithms */ |
193 | #define FSF_FC_SECURITY_AUTH 0x00000001 |
194 | #define FSF_FC_SECURITY_ENC_FCSP2 0x00000002 |
195 | #define FSF_FC_SECURITY_ENC_ERAS 0x00000004 |
196 | |
197 | struct fsf_queue_designator { |
198 | u8 cssid; |
199 | u8 chpid; |
200 | u8 hla; |
201 | u8 ua; |
202 | u32 res1; |
203 | } __attribute__ ((packed)); |
204 | |
205 | struct fsf_bit_error_payload { |
206 | u32 res1; |
207 | u32 link_failure_error_count; |
208 | u32 loss_of_sync_error_count; |
209 | u32 loss_of_signal_error_count; |
210 | u32 primitive_sequence_error_count; |
211 | u32 invalid_transmission_word_error_count; |
212 | u32 crc_error_count; |
213 | u32 primitive_sequence_event_timeout_count; |
214 | u32 elastic_buffer_overrun_error_count; |
215 | u32 fcal_arbitration_timeout_count; |
216 | u32 advertised_receive_b2b_credit; |
217 | u32 current_receive_b2b_credit; |
218 | u32 advertised_transmit_b2b_credit; |
219 | u32 current_transmit_b2b_credit; |
220 | } __attribute__ ((packed)); |
221 | |
222 | struct fsf_link_down_info { |
223 | u32 error_code; |
224 | u32 res1; |
225 | u8 res2[2]; |
226 | u8 primary_status; |
227 | u8 ioerr_code; |
228 | u8 action_code; |
229 | u8 reason_code; |
230 | u8 explanation_code; |
231 | u8 vendor_specific_code; |
232 | } __attribute__ ((packed)); |
233 | |
234 | struct fsf_version_change { |
235 | u32 current_version; |
236 | u32 previous_version; |
237 | } __packed; |
238 | |
239 | struct fsf_status_read_buffer { |
240 | u32 status_type; |
241 | u32 status_subtype; |
242 | u32 length; |
243 | u32 res1; |
244 | struct fsf_queue_designator queue_designator; |
245 | u8 res2; |
246 | u8 d_id[3]; |
247 | u32 class; |
248 | u64 fcp_lun; |
249 | u8 res3[24]; |
250 | union { |
251 | u8 data[FSF_STATUS_READ_PAYLOAD_SIZE]; |
252 | u32 word[FSF_STATUS_READ_PAYLOAD_SIZE/sizeof(u32)]; |
253 | struct fsf_link_down_info link_down_info; |
254 | struct fsf_bit_error_payload bit_error; |
255 | struct fsf_version_change version_change; |
256 | } payload; |
257 | } __attribute__ ((packed)); |
258 | |
259 | struct fsf_qual_version_error { |
260 | u32 fsf_version; |
261 | u32 res1[3]; |
262 | } __attribute__ ((packed)); |
263 | |
264 | struct fsf_qual_sequence_error { |
265 | u32 exp_req_seq_no; |
266 | u32 res1[3]; |
267 | } __attribute__ ((packed)); |
268 | |
269 | struct fsf_qual_latency_info { |
270 | u32 channel_lat; |
271 | u32 fabric_lat; |
272 | u8 res1[8]; |
273 | } __attribute__ ((packed)); |
274 | |
275 | union fsf_prot_status_qual { |
276 | u32 word[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u32)]; |
277 | u64 doubleword[FSF_PROT_STATUS_QUAL_SIZE / sizeof(u64)]; |
278 | struct fsf_qual_version_error version_error; |
279 | struct fsf_qual_sequence_error sequence_error; |
280 | struct fsf_link_down_info link_down_info; |
281 | struct fsf_qual_latency_info latency_info; |
282 | } __attribute__ ((packed)); |
283 | |
284 | struct fsf_qtcb_prefix { |
285 | u64 req_id; |
286 | u32 qtcb_version; |
287 | u32 ulp_info; |
288 | u32 qtcb_type; |
289 | u32 req_seq_no; |
290 | u32 prot_status; |
291 | union fsf_prot_status_qual prot_status_qual; |
292 | u8 res1[20]; |
293 | } __attribute__ ((packed)); |
294 | |
295 | struct fsf_statistics_info { |
296 | u64 input_req; |
297 | u64 output_req; |
298 | u64 control_req; |
299 | u64 input_mb; |
300 | u64 output_mb; |
301 | u64 seconds_act; |
302 | } __attribute__ ((packed)); |
303 | |
304 | union fsf_status_qual { |
305 | u8 byte[FSF_STATUS_QUALIFIER_SIZE]; |
306 | u16 halfword[FSF_STATUS_QUALIFIER_SIZE / sizeof (u16)]; |
307 | u32 word[FSF_STATUS_QUALIFIER_SIZE / sizeof (u32)]; |
308 | u64 doubleword[FSF_STATUS_QUALIFIER_SIZE / sizeof(u64)]; |
309 | struct fsf_queue_designator fsf_queue_designator; |
310 | struct fsf_link_down_info link_down_info; |
311 | } __attribute__ ((packed)); |
312 | |
313 | struct { |
314 | u64 req_handle; |
315 | u32 fsf_command; |
316 | u32 ; |
317 | u32 port_handle; |
318 | u32 lun_handle; |
319 | u32 ; |
320 | u32 ; |
321 | union fsf_status_qual ; |
322 | u8 [28]; |
323 | u16 ; |
324 | u16 ; |
325 | u8 [16]; |
326 | } __attribute__ ((packed)); |
327 | |
328 | #define FSF_PLOGI_MIN_LEN 112 |
329 | |
330 | #define FSF_FCP_CMND_SIZE 288 |
331 | #define FSF_FCP_RSP_SIZE 128 |
332 | |
333 | struct fsf_qtcb_bottom_io { |
334 | u32 data_direction; |
335 | u32 service_class; |
336 | u8 res1; |
337 | u8 data_prot_flags; |
338 | u16 app_tag_value; |
339 | u32 ref_tag_value; |
340 | u32 fcp_cmnd_length; |
341 | u32 data_block_length; |
342 | u32 prot_data_length; |
343 | u8 res2[4]; |
344 | union { |
345 | u8 byte[FSF_FCP_CMND_SIZE]; |
346 | struct fcp_cmnd iu; |
347 | } fcp_cmnd; |
348 | union { |
349 | u8 byte[FSF_FCP_RSP_SIZE]; |
350 | struct fcp_resp_with_ext iu; |
351 | } fcp_rsp; |
352 | u8 res3[64]; |
353 | } __attribute__ ((packed)); |
354 | |
355 | struct fsf_qtcb_bottom_support { |
356 | u32 operation_subtype; |
357 | u8 res1[13]; |
358 | u8 d_id[3]; |
359 | u32 option; |
360 | u64 fcp_lun; |
361 | u64 res2; |
362 | u64 req_handle; |
363 | u32 service_class; |
364 | u8 res3[3]; |
365 | u8 timeout; |
366 | u32 lun_access_info; |
367 | u32 connection_info; |
368 | u8 res4[176]; |
369 | u32 els1_length; |
370 | u32 els2_length; |
371 | u32 req_buf_length; |
372 | u32 resp_buf_length; |
373 | u8 els[256]; |
374 | } __attribute__ ((packed)); |
375 | |
376 | #define ZFCP_FSF_TIMER_INT_MASK 0x3FFF |
377 | |
378 | struct fsf_qtcb_bottom_config { |
379 | u32 lic_version; |
380 | u32 feature_selection; |
381 | u32 high_qtcb_version; |
382 | u32 low_qtcb_version; |
383 | u32 max_qtcb_size; |
384 | u32 max_data_transfer_size; |
385 | u32 adapter_features; |
386 | u32 connection_features; |
387 | u32 fc_topology; |
388 | u32 fc_link_speed; /* one of ZFCP_FSF_PORTSPEED_* */ |
389 | u32 adapter_type; |
390 | u8 res0; |
391 | u8 peer_d_id[3]; |
392 | u16 status_read_buf_num; |
393 | u16 timer_interval; |
394 | u8 res2[9]; |
395 | u8 s_id[3]; |
396 | u8 nport_serv_param[128]; |
397 | u8 res3[8]; |
398 | u32 adapter_ports; |
399 | u32 hardware_version; |
400 | u8 serial_number[32]; |
401 | u8 plogi_payload[112]; |
402 | struct fsf_statistics_info stat_info; |
403 | u8 res4[112]; |
404 | } __attribute__ ((packed)); |
405 | |
406 | struct fsf_qtcb_bottom_port { |
407 | u64 wwpn; |
408 | u32 fc_port_id; |
409 | u32 port_type; |
410 | u32 port_state; |
411 | u32 class_of_service; /* should be 0x00000006 for class 2 and 3 */ |
412 | u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */ |
413 | u8 active_fc4_types[32]; |
414 | u32 supported_speed; /* any combination of ZFCP_FSF_PORTSPEED_* */ |
415 | u32 maximum_frame_size; /* fixed value of 2112 */ |
416 | u64 seconds_since_last_reset; |
417 | u64 tx_frames; |
418 | u64 tx_words; |
419 | u64 rx_frames; |
420 | u64 rx_words; |
421 | u64 lip; /* 0 */ |
422 | u64 nos; /* currently 0 */ |
423 | u64 error_frames; /* currently 0 */ |
424 | u64 dumped_frames; /* currently 0 */ |
425 | u64 link_failure; |
426 | u64 loss_of_sync; |
427 | u64 loss_of_signal; |
428 | u64 psp_error_counts; |
429 | u64 invalid_tx_words; |
430 | u64 invalid_crcs; |
431 | u64 input_requests; |
432 | u64 output_requests; |
433 | u64 control_requests; |
434 | u64 input_mb; /* where 1 MByte == 1.000.000 Bytes */ |
435 | u64 output_mb; /* where 1 MByte == 1.000.000 Bytes */ |
436 | u8 cp_util; |
437 | u8 cb_util; |
438 | u8 a_util; |
439 | u8 res2; |
440 | s16 temperature; |
441 | u16 vcc; |
442 | u16 tx_bias; |
443 | u16 tx_power; |
444 | u16 rx_power; |
445 | union { |
446 | u16 raw; |
447 | struct { |
448 | u16 fec_active :1; |
449 | u16:7; |
450 | u16 connector_type :2; |
451 | u16 sfp_invalid :1; |
452 | u16 optical_port :1; |
453 | u16 port_tx_type :4; |
454 | }; |
455 | } sfp_flags; |
456 | u32 fc_security_algorithms; |
457 | u8 res3[236]; |
458 | } __attribute__ ((packed)); |
459 | |
460 | union fsf_qtcb_bottom { |
461 | struct fsf_qtcb_bottom_io io; |
462 | struct fsf_qtcb_bottom_support support; |
463 | struct fsf_qtcb_bottom_config config; |
464 | struct fsf_qtcb_bottom_port port; |
465 | }; |
466 | |
467 | struct fsf_qtcb { |
468 | struct fsf_qtcb_prefix prefix; |
469 | struct fsf_qtcb_header ; |
470 | union fsf_qtcb_bottom bottom; |
471 | u8 log[FSF_QTCB_LOG_SIZE]; |
472 | } __attribute__ ((packed)); |
473 | |
474 | struct zfcp_blk_drv_data { |
475 | #define ZFCP_BLK_DRV_DATA_MAGIC 0x1 |
476 | u32 magic; |
477 | #define ZFCP_BLK_LAT_VALID 0x1 |
478 | #define ZFCP_BLK_REQ_ERROR 0x2 |
479 | u16 flags; |
480 | u8 inb_usage; |
481 | u8 outb_usage; |
482 | u64 channel_lat; |
483 | u64 fabric_lat; |
484 | } __attribute__ ((packed)); |
485 | |
486 | /** |
487 | * struct zfcp_fsf_ct_els - zfcp data for ct or els request |
488 | * @req: scatter-gather list for request, points to &zfcp_fc_req.sg_req or BSG |
489 | * @resp: scatter-gather list for response, points to &zfcp_fc_req.sg_rsp or BSG |
490 | * @handler: handler function (called for response to the request) |
491 | * @handler_data: data passed to handler function |
492 | * @port: Optional pointer to port for zfcp internal ELS (only test link ADISC) |
493 | * @status: used to pass error status to calling function |
494 | * @d_id: Destination ID of either open WKA port for CT or of D_ID for ELS |
495 | */ |
496 | struct zfcp_fsf_ct_els { |
497 | struct scatterlist *req; |
498 | struct scatterlist *resp; |
499 | void (*handler)(void *); |
500 | void *handler_data; |
501 | struct zfcp_port *port; |
502 | int status; |
503 | u32 d_id; |
504 | }; |
505 | |
506 | #endif /* FSF_H */ |
507 | |