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42e9a92f RL |
1 | /* |
2 | * Copyright(c) 2007 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 _LIBFC_H_ | |
21 | #define _LIBFC_H_ | |
22 | ||
23 | #include <linux/timer.h> | |
24 | #include <linux/if.h> | |
582b45bc | 25 | #include <linux/percpu.h> |
42e9a92f RL |
26 | |
27 | #include <scsi/scsi_transport.h> | |
28 | #include <scsi/scsi_transport_fc.h> | |
a51ab396 | 29 | #include <scsi/scsi_bsg_fc.h> |
42e9a92f RL |
30 | |
31 | #include <scsi/fc/fc_fcp.h> | |
32 | #include <scsi/fc/fc_ns.h> | |
33 | #include <scsi/fc/fc_els.h> | |
34 | #include <scsi/fc/fc_gs.h> | |
35 | ||
36 | #include <scsi/fc_frame.h> | |
37 | ||
42e9a92f RL |
38 | /* |
39 | * libfc error codes | |
40 | */ | |
41 | #define FC_NO_ERR 0 /* no error */ | |
42 | #define FC_EX_TIMEOUT 1 /* Exchange timeout */ | |
43 | #define FC_EX_CLOSED 2 /* Exchange closed */ | |
44 | ||
45 | /* some helpful macros */ | |
46 | ||
47 | #define ntohll(x) be64_to_cpu(x) | |
48 | #define htonll(x) cpu_to_be64(x) | |
49 | ||
50 | #define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2])) | |
51 | ||
52 | #define hton24(p, v) do { \ | |
53 | p[0] = (((v) >> 16) & 0xFF); \ | |
54 | p[1] = (((v) >> 8) & 0xFF); \ | |
55 | p[2] = ((v) & 0xFF); \ | |
56 | } while (0) | |
57 | ||
3a3b42bf RL |
58 | /** |
59 | * enum fc_lport_state - Local port states | |
60 | * @LPORT_ST_DISABLED: Disabled | |
61 | * @LPORT_ST_FLOGI: Fabric login (FLOGI) sent | |
62 | * @LPORT_ST_DNS: Waiting for name server remote port to become ready | |
63 | * @LPORT_ST_RPN_ID: Register port name by ID (RPN_ID) sent | |
64 | * @LPORT_ST_RFT_ID: Register Fibre Channel types by ID (RFT_ID) sent | |
ab593b18 | 65 | * @LPORT_ST_RFF_ID: Register FC-4 Features by ID (RFF_ID) sent |
3a3b42bf RL |
66 | * @LPORT_ST_SCR: State Change Register (SCR) sent |
67 | * @LPORT_ST_READY: Ready for use | |
68 | * @LPORT_ST_LOGO: Local port logout (LOGO) sent | |
69 | * @LPORT_ST_RESET: Local port reset | |
42e9a92f | 70 | */ |
42e9a92f | 71 | enum fc_lport_state { |
b1d9fd55 | 72 | LPORT_ST_DISABLED = 0, |
42e9a92f RL |
73 | LPORT_ST_FLOGI, |
74 | LPORT_ST_DNS, | |
c9c7bd7a | 75 | LPORT_ST_RNN_ID, |
5baa17c3 | 76 | LPORT_ST_RSNN_NN, |
c9866a54 | 77 | LPORT_ST_RSPN_ID, |
42e9a92f | 78 | LPORT_ST_RFT_ID, |
ab593b18 | 79 | LPORT_ST_RFF_ID, |
42e9a92f RL |
80 | LPORT_ST_SCR, |
81 | LPORT_ST_READY, | |
82 | LPORT_ST_LOGO, | |
83 | LPORT_ST_RESET | |
84 | }; | |
85 | ||
86 | enum fc_disc_event { | |
87 | DISC_EV_NONE = 0, | |
88 | DISC_EV_SUCCESS, | |
89 | DISC_EV_FAILED | |
90 | }; | |
91 | ||
3a3b42bf RL |
92 | /** |
93 | * enum fc_rport_state - Remote port states | |
94 | * @RPORT_ST_INIT: Initialized | |
95 | * @RPORT_ST_PLOGI: Waiting for PLOGI completion | |
96 | * @RPORT_ST_PRLI: Waiting for PRLI completion | |
97 | * @RPORT_ST_RTV: Waiting for RTV completion | |
98 | * @RPORT_ST_READY: Ready for use | |
99 | * @RPORT_ST_LOGO: Remote port logout (LOGO) sent | |
100 | * @RPORT_ST_ADISC: Discover Address sent | |
101 | * @RPORT_ST_DELETE: Remote port being deleted | |
102 | * @RPORT_ST_RESTART: Remote port being deleted and will restart | |
103 | */ | |
42e9a92f | 104 | enum fc_rport_state { |
3a3b42bf RL |
105 | RPORT_ST_INIT, |
106 | RPORT_ST_PLOGI, | |
107 | RPORT_ST_PRLI, | |
108 | RPORT_ST_RTV, | |
109 | RPORT_ST_READY, | |
110 | RPORT_ST_LOGO, | |
111 | RPORT_ST_ADISC, | |
112 | RPORT_ST_DELETE, | |
113 | RPORT_ST_RESTART, | |
42e9a92f RL |
114 | }; |
115 | ||
42e9a92f RL |
116 | /** |
117 | * struct fc_disc_port - temporary discovery port to hold rport identifiers | |
9737e6a7 RL |
118 | * @lp: Fibre Channel host port instance |
119 | * @peers: Node for list management during discovery and RSCN processing | |
120 | * @rport_work: Work struct for starting the rport state machine | |
121 | * @port_id: Port ID of the discovered port | |
42e9a92f RL |
122 | */ |
123 | struct fc_disc_port { | |
3a3b42bf RL |
124 | struct fc_lport *lp; |
125 | struct list_head peers; | |
126 | struct work_struct rport_work; | |
127 | u32 port_id; | |
42e9a92f RL |
128 | }; |
129 | ||
3a3b42bf RL |
130 | /** |
131 | * enum fc_rport_event - Remote port events | |
132 | * @RPORT_EV_NONE: No event | |
133 | * @RPORT_EV_READY: Remote port is ready for use | |
134 | * @RPORT_EV_FAILED: State machine failed, remote port is not ready | |
135 | * @RPORT_EV_STOP: Remote port has been stopped | |
136 | * @RPORT_EV_LOGO: Remote port logout (LOGO) sent | |
137 | */ | |
42e9a92f RL |
138 | enum fc_rport_event { |
139 | RPORT_EV_NONE = 0, | |
4c0f62b5 | 140 | RPORT_EV_READY, |
42e9a92f RL |
141 | RPORT_EV_FAILED, |
142 | RPORT_EV_STOP, | |
143 | RPORT_EV_LOGO | |
144 | }; | |
145 | ||
9fb9d328 JE |
146 | struct fc_rport_priv; |
147 | ||
3a3b42bf RL |
148 | /** |
149 | * struct fc_rport_operations - Operations for a remote port | |
150 | * @event_callback: Function to be called for remote port events | |
151 | */ | |
42e9a92f | 152 | struct fc_rport_operations { |
9fb9d328 | 153 | void (*event_callback)(struct fc_lport *, struct fc_rport_priv *, |
42e9a92f RL |
154 | enum fc_rport_event); |
155 | }; | |
156 | ||
157 | /** | |
158 | * struct fc_rport_libfc_priv - libfc internal information about a remote port | |
3a3b42bf RL |
159 | * @local_port: The associated local port |
160 | * @rp_state: Indicates READY for I/O or DELETE when blocked | |
161 | * @flags: REC and RETRY supported flags | |
162 | * @e_d_tov: Error detect timeout value (in msec) | |
163 | * @r_a_tov: Resource allocation timeout value (in msec) | |
9e9d0452 JE |
164 | */ |
165 | struct fc_rport_libfc_priv { | |
166 | struct fc_lport *local_port; | |
167 | enum fc_rport_state rp_state; | |
168 | u16 flags; | |
169 | #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0) | |
170 | #define FC_RP_FLAGS_RETRY (1 << 1) | |
171 | unsigned int e_d_tov; | |
172 | unsigned int r_a_tov; | |
173 | }; | |
174 | ||
175 | /** | |
3a3b42bf RL |
176 | * struct fc_rport_priv - libfc remote port and discovery info |
177 | * @local_port: The associated local port | |
178 | * @rport: The FC transport remote port | |
179 | * @kref: Reference counter | |
180 | * @rp_state: Enumeration that tracks progress of PLOGI, PRLI, | |
181 | * and RTV exchanges | |
182 | * @ids: The remote port identifiers and roles | |
183 | * @flags: REC and RETRY supported flags | |
184 | * @max_seq: Maximum number of concurrent sequences | |
185 | * @disc_id: The discovery identifier | |
186 | * @maxframe_size: The maximum frame size | |
187 | * @retries: The retry count for the current state | |
188 | * @e_d_tov: Error detect timeout value (in msec) | |
189 | * @r_a_tov: Resource allocation timeout value (in msec) | |
190 | * @rp_mutex: The mutex that protects the remote port | |
191 | * @retry_work: Handle for retries | |
192 | * @event_callback: Callback when READY, FAILED or LOGO states complete | |
42e9a92f | 193 | */ |
9e9d0452 | 194 | struct fc_rport_priv { |
3a3b42bf RL |
195 | struct fc_lport *local_port; |
196 | struct fc_rport *rport; | |
197 | struct kref kref; | |
198 | enum fc_rport_state rp_state; | |
f211fa51 | 199 | struct fc_rport_identifiers ids; |
3a3b42bf RL |
200 | u16 flags; |
201 | u16 max_seq; | |
202 | u16 disc_id; | |
203 | u16 maxframe_size; | |
204 | unsigned int retries; | |
205 | unsigned int e_d_tov; | |
206 | unsigned int r_a_tov; | |
207 | struct mutex rp_mutex; | |
208 | struct delayed_work retry_work; | |
209 | enum fc_rport_event event; | |
210 | struct fc_rport_operations *ops; | |
211 | struct list_head peers; | |
212 | struct work_struct event_work; | |
213 | u32 supported_classes; | |
42e9a92f RL |
214 | }; |
215 | ||
3a3b42bf RL |
216 | /** |
217 | * struct fcoe_dev_stats - fcoe stats structure | |
218 | * @SecondsSinceLastReset: Seconds since the last reset | |
219 | * @TxFrames: Number of transmitted frames | |
220 | * @TxWords: Number of transmitted words | |
221 | * @RxFrames: Number of received frames | |
222 | * @RxWords: Number of received words | |
223 | * @ErrorFrames: Number of received error frames | |
224 | * @DumpedFrames: Number of dumped frames | |
225 | * @LinkFailureCount: Number of link failures | |
226 | * @LossOfSignalCount: Number for signal losses | |
227 | * @InvalidTxWordCount: Number of invalid transmitted words | |
228 | * @InvalidCRCCount: Number of invalid CRCs | |
229 | * @InputRequests: Number of input requests | |
230 | * @OutputRequests: Number of output requests | |
231 | * @ControlRequests: Number of control requests | |
232 | * @InputMegabytes: Number of received megabytes | |
233 | * @OutputMegabytes: Number of transmitted megabytes | |
6580bbd0 YZ |
234 | * @VLinkFailureCount: Number of virtual link failures |
235 | * @MissDiscAdvCount: Number of missing FIP discovery advertisement | |
42e9a92f RL |
236 | */ |
237 | struct fcoe_dev_stats { | |
238 | u64 SecondsSinceLastReset; | |
239 | u64 TxFrames; | |
240 | u64 TxWords; | |
241 | u64 RxFrames; | |
242 | u64 RxWords; | |
243 | u64 ErrorFrames; | |
244 | u64 DumpedFrames; | |
245 | u64 LinkFailureCount; | |
246 | u64 LossOfSignalCount; | |
247 | u64 InvalidTxWordCount; | |
248 | u64 InvalidCRCCount; | |
249 | u64 InputRequests; | |
250 | u64 OutputRequests; | |
251 | u64 ControlRequests; | |
252 | u64 InputMegabytes; | |
253 | u64 OutputMegabytes; | |
6580bbd0 YZ |
254 | u64 VLinkFailureCount; |
255 | u64 MissDiscAdvCount; | |
42e9a92f RL |
256 | }; |
257 | ||
3a3b42bf RL |
258 | /** |
259 | * struct fc_seq_els_data - ELS data used for passing ELS specific responses | |
260 | * @fp: The ELS frame | |
261 | * @reason: The reason for rejection | |
262 | * @explan: The explaination of the rejection | |
263 | * | |
264 | * Mainly used by the exchange manager layer. | |
42e9a92f RL |
265 | */ |
266 | struct fc_seq_els_data { | |
267 | struct fc_frame *fp; | |
268 | enum fc_els_rjt_reason reason; | |
269 | enum fc_els_rjt_explan explan; | |
270 | }; | |
271 | ||
3a3b42bf RL |
272 | /** |
273 | * struct fc_fcp_pkt - FCP request structure (one for each scsi_cmnd request) | |
274 | * @lp: The associated local port | |
275 | * @state: The state of the I/O | |
276 | * @tgt_flags: Target's flags | |
277 | * @ref_cnt: Reference count | |
278 | * @scsi_pkt_lock: Lock to protect the SCSI packet (must be taken before the | |
279 | * host_lock if both are to be held at the same time) | |
280 | * @cmd: The SCSI command (set and clear with the host_lock held) | |
281 | * @list: Tracks queued commands (accessed with the host_lock held) | |
282 | * @timer: The command timer | |
283 | * @tm_done: Completion indicator | |
284 | * @wait_for_comp: Indicator to wait for completion of the I/O (in jiffies) | |
285 | * @start_time: Timestamp indicating the start of the I/O (in jiffies) | |
286 | * @end_time: Timestamp indicating the end of the I/O (in jiffies) | |
287 | * @last_pkt_time: Timestamp of the last frame received (in jiffies) | |
288 | * @data_len: The length of the data | |
289 | * @cdb_cmd: The CDB command | |
290 | * @xfer_len: The transfer length | |
291 | * @xfer_ddp: Indicates if this transfer used DDP (XID of the exchange | |
292 | * will be set here if DDP was setup) | |
293 | * @xfer_contig_end: The offset into the buffer if the buffer is contiguous | |
294 | * (Tx and Rx) | |
295 | * @max_payload: The maximum payload size (in bytes) | |
296 | * @io_status: SCSI result (upper 24 bits) | |
297 | * @cdb_status: CDB status | |
298 | * @status_code: FCP I/O status | |
299 | * @scsi_comp_flags: Completion flags (bit 3 Underrun bit 2: overrun) | |
300 | * @req_flags: Request flags (bit 0: read bit:1 write) | |
301 | * @scsi_resid: SCSI residule length | |
302 | * @rport: The remote port that the SCSI command is targeted at | |
303 | * @seq_ptr: The sequence that will carry the SCSI command | |
304 | * @recov_retry: Number of recovery retries | |
305 | * @recov_seq: The sequence for REC or SRR | |
42e9a92f RL |
306 | */ |
307 | struct fc_fcp_pkt { | |
3a3b42bf RL |
308 | /* Housekeeping information */ |
309 | struct fc_lport *lp; | |
310 | u16 state; | |
311 | u16 tgt_flags; | |
312 | atomic_t ref_cnt; | |
313 | spinlock_t scsi_pkt_lock; | |
314 | ||
315 | /* SCSI I/O related information */ | |
316 | struct scsi_cmnd *cmd; | |
317 | struct list_head list; | |
318 | ||
319 | /* Timeout related information */ | |
320 | struct timer_list timer; | |
42e9a92f | 321 | struct completion tm_done; |
3a3b42bf RL |
322 | int wait_for_comp; |
323 | unsigned long start_time; | |
324 | unsigned long end_time; | |
325 | unsigned long last_pkt_time; | |
326 | ||
327 | /* SCSI command and data transfer information */ | |
328 | u32 data_len; | |
329 | ||
330 | /* Transport related veriables */ | |
331 | struct fcp_cmnd cdb_cmd; | |
332 | size_t xfer_len; | |
333 | u16 xfer_ddp; | |
334 | u32 xfer_contig_end; | |
335 | u16 max_payload; | |
336 | ||
337 | /* SCSI/FCP return status */ | |
338 | u32 io_status; | |
339 | u8 cdb_status; | |
340 | u8 status_code; | |
341 | u8 scsi_comp_flags; | |
342 | u32 req_flags; | |
343 | u32 scsi_resid; | |
344 | ||
345 | /* Associated structures */ | |
346 | struct fc_rport *rport; | |
347 | struct fc_seq *seq_ptr; | |
348 | ||
349 | /* Error Processing information */ | |
350 | u8 recov_retry; | |
351 | struct fc_seq *recov_seq; | |
42e9a92f RL |
352 | }; |
353 | ||
354 | /* | |
355 | * Structure and function definitions for managing Fibre Channel Exchanges | |
356 | * and Sequences | |
357 | * | |
358 | * fc_exch holds state for one exchange and links to its active sequence. | |
359 | * | |
360 | * fc_seq holds the state for an individual sequence. | |
361 | */ | |
362 | ||
363 | struct fc_exch_mgr; | |
96316099 | 364 | struct fc_exch_mgr_anchor; |
3a3b42bf | 365 | extern u16 fc_cpu_mask; /* cpu mask for possible cpus */ |
42e9a92f | 366 | |
3a3b42bf RL |
367 | /** |
368 | * struct fc_seq - FC sequence | |
369 | * @id: The sequence ID | |
370 | * @ssb_stat: Status flags for the sequence status block (SSB) | |
371 | * @cnt: Number of frames sent so far | |
372 | * @rec_data: FC-4 value for REC | |
42e9a92f RL |
373 | */ |
374 | struct fc_seq { | |
3a3b42bf RL |
375 | u8 id; |
376 | u16 ssb_stat; | |
377 | u16 cnt; | |
378 | u32 rec_data; | |
42e9a92f RL |
379 | }; |
380 | ||
381 | #define FC_EX_DONE (1 << 0) /* ep is completed */ | |
382 | #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */ | |
383 | ||
3a3b42bf RL |
384 | /** |
385 | * struct fc_exch - Fibre Channel Exchange | |
386 | * @em: Exchange manager | |
387 | * @pool: Exchange pool | |
388 | * @state: The exchange's state | |
389 | * @xid: The exchange ID | |
390 | * @ex_list: Handle used by the EM to track free exchanges | |
391 | * @ex_lock: Lock that protects the exchange | |
392 | * @ex_refcnt: Reference count | |
393 | * @timeout_work: Handle for timeout handler | |
394 | * @lp: The local port that this exchange is on | |
395 | * @oxid: Originator's exchange ID | |
396 | * @rxid: Responder's exchange ID | |
397 | * @oid: Originator's FCID | |
398 | * @sid: Source FCID | |
399 | * @did: Destination FCID | |
400 | * @esb_stat: ESB exchange status | |
401 | * @r_a_tov: Resouce allocation time out value (in msecs) | |
402 | * @seq_id: The next sequence ID to use | |
403 | * @f_ctl: F_CTL flags for the sequence | |
404 | * @fh_type: The frame type | |
405 | * @class: The class of service | |
406 | * @seq: The sequence in use on this exchange | |
407 | * @resp: Callback for responses on this exchange | |
408 | * @destructor: Called when destroying the exchange | |
409 | * @arg: Passed as a void pointer to the resp() callback | |
42e9a92f RL |
410 | * |
411 | * Locking notes: The ex_lock protects following items: | |
412 | * state, esb_stat, f_ctl, seq.ssb_stat | |
413 | * seq_id | |
414 | * sequence allocation | |
415 | */ | |
416 | struct fc_exch { | |
3a3b42bf RL |
417 | struct fc_exch_mgr *em; |
418 | struct fc_exch_pool *pool; | |
419 | u32 state; | |
420 | u16 xid; | |
421 | struct list_head ex_list; | |
422 | spinlock_t ex_lock; | |
423 | atomic_t ex_refcnt; | |
424 | struct delayed_work timeout_work; | |
425 | struct fc_lport *lp; | |
426 | u16 oxid; | |
427 | u16 rxid; | |
428 | u32 oid; | |
429 | u32 sid; | |
430 | u32 did; | |
431 | u32 esb_stat; | |
432 | u32 r_a_tov; | |
433 | u8 seq_id; | |
434 | u32 f_ctl; | |
435 | u8 fh_type; | |
436 | enum fc_class class; | |
437 | struct fc_seq seq; | |
438 | ||
439 | void (*resp)(struct fc_seq *, struct fc_frame *, void *); | |
440 | void *arg; | |
441 | ||
442 | void (*destructor)(struct fc_seq *, void *); | |
443 | ||
42e9a92f RL |
444 | }; |
445 | #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) | |
446 | ||
42e9a92f | 447 | |
3a3b42bf | 448 | struct libfc_function_template { |
42e9a92f RL |
449 | /* |
450 | * Interface to send a FC frame | |
42e9a92f | 451 | * |
0ae4d4ae | 452 | * STATUS: REQUIRED |
42e9a92f | 453 | */ |
3a3b42bf | 454 | int (*frame_send)(struct fc_lport *, struct fc_frame *); |
42e9a92f RL |
455 | |
456 | /* | |
0ae4d4ae RL |
457 | * Interface to send ELS/CT frames |
458 | * | |
459 | * STATUS: OPTIONAL | |
42e9a92f | 460 | */ |
3a3b42bf RL |
461 | struct fc_seq *(*elsct_send)(struct fc_lport *, u32 did, |
462 | struct fc_frame *, unsigned int op, | |
42e9a92f | 463 | void (*resp)(struct fc_seq *, |
3a3b42bf | 464 | struct fc_frame *, void *arg), |
42e9a92f | 465 | void *arg, u32 timer_msec); |
42e9a92f RL |
466 | |
467 | /* | |
468 | * Send the FC frame payload using a new exchange and sequence. | |
469 | * | |
42e9a92f RL |
470 | * The exchange response handler is set in this routine to resp() |
471 | * function pointer. It can be called in two scenarios: if a timeout | |
472 | * occurs or if a response frame is received for the exchange. The | |
473 | * fc_frame pointer in response handler will also indicate timeout | |
474 | * as error using IS_ERR related macros. | |
475 | * | |
476 | * The exchange destructor handler is also set in this routine. | |
477 | * The destructor handler is invoked by EM layer when exchange | |
478 | * is about to free, this can be used by caller to free its | |
479 | * resources along with exchange free. | |
480 | * | |
481 | * The arg is passed back to resp and destructor handler. | |
482 | * | |
483 | * The timeout value (in msec) for an exchange is set if non zero | |
484 | * timer_msec argument is specified. The timer is canceled when | |
485 | * it fires or when the exchange is done. The exchange timeout handler | |
486 | * is registered by EM layer. | |
0ae4d4ae RL |
487 | * |
488 | * STATUS: OPTIONAL | |
42e9a92f | 489 | */ |
3a3b42bf RL |
490 | struct fc_seq *(*exch_seq_send)(struct fc_lport *, struct fc_frame *, |
491 | void (*resp)(struct fc_seq *, | |
492 | struct fc_frame *, | |
493 | void *), | |
494 | void (*destructor)(struct fc_seq *, | |
495 | void *), | |
496 | void *, unsigned int timer_msec); | |
42e9a92f | 497 | |
b277d2aa YZ |
498 | /* |
499 | * Sets up the DDP context for a given exchange id on the given | |
500 | * scatterlist if LLD supports DDP for large receive. | |
501 | * | |
502 | * STATUS: OPTIONAL | |
503 | */ | |
3a3b42bf RL |
504 | int (*ddp_setup)(struct fc_lport *, u16, struct scatterlist *, |
505 | unsigned int); | |
b277d2aa YZ |
506 | /* |
507 | * Completes the DDP transfer and returns the length of data DDPed | |
508 | * for the given exchange id. | |
509 | * | |
510 | * STATUS: OPTIONAL | |
511 | */ | |
3a3b42bf | 512 | int (*ddp_done)(struct fc_lport *, u16); |
b84056bf YZ |
513 | /* |
514 | * Allow LLD to fill its own Link Error Status Block | |
515 | * | |
516 | * STATUS: OPTIONAL | |
517 | */ | |
518 | void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); | |
42e9a92f | 519 | /* |
0ae4d4ae RL |
520 | * Send a frame using an existing sequence and exchange. |
521 | * | |
522 | * STATUS: OPTIONAL | |
42e9a92f | 523 | */ |
3a3b42bf RL |
524 | int (*seq_send)(struct fc_lport *, struct fc_seq *, |
525 | struct fc_frame *); | |
42e9a92f RL |
526 | |
527 | /* | |
0ae4d4ae RL |
528 | * Send an ELS response using infomation from a previous |
529 | * exchange and sequence. | |
530 | * | |
531 | * STATUS: OPTIONAL | |
42e9a92f | 532 | */ |
3a3b42bf RL |
533 | void (*seq_els_rsp_send)(struct fc_seq *, enum fc_els_cmd, |
534 | struct fc_seq_els_data *); | |
42e9a92f RL |
535 | |
536 | /* | |
537 | * Abort an exchange and sequence. Generally called because of a | |
538 | * exchange timeout or an abort from the upper layer. | |
539 | * | |
540 | * A timer_msec can be specified for abort timeout, if non-zero | |
541 | * timer_msec value is specified then exchange resp handler | |
542 | * will be called with timeout error if no response to abort. | |
0ae4d4ae RL |
543 | * |
544 | * STATUS: OPTIONAL | |
42e9a92f | 545 | */ |
3a3b42bf | 546 | int (*seq_exch_abort)(const struct fc_seq *, |
42e9a92f RL |
547 | unsigned int timer_msec); |
548 | ||
549 | /* | |
550 | * Indicate that an exchange/sequence tuple is complete and the memory | |
551 | * allocated for the related objects may be freed. | |
0ae4d4ae RL |
552 | * |
553 | * STATUS: OPTIONAL | |
42e9a92f | 554 | */ |
3a3b42bf | 555 | void (*exch_done)(struct fc_seq *); |
42e9a92f | 556 | |
42e9a92f RL |
557 | /* |
558 | * Start a new sequence on the same exchange/sequence tuple. | |
0ae4d4ae RL |
559 | * |
560 | * STATUS: OPTIONAL | |
42e9a92f | 561 | */ |
3a3b42bf | 562 | struct fc_seq *(*seq_start_next)(struct fc_seq *); |
42e9a92f RL |
563 | |
564 | /* | |
565 | * Reset an exchange manager, completing all sequences and exchanges. | |
566 | * If s_id is non-zero, reset only exchanges originating from that FID. | |
567 | * If d_id is non-zero, reset only exchanges sending to that FID. | |
0ae4d4ae RL |
568 | * |
569 | * STATUS: OPTIONAL | |
42e9a92f | 570 | */ |
3a3b42bf | 571 | void (*exch_mgr_reset)(struct fc_lport *, u32 s_id, u32 d_id); |
42e9a92f | 572 | |
0ae4d4ae RL |
573 | /* |
574 | * Flush the rport work queue. Generally used before shutdown. | |
575 | * | |
576 | * STATUS: OPTIONAL | |
42e9a92f | 577 | */ |
0ae4d4ae | 578 | void (*rport_flush_queue)(void); |
42e9a92f RL |
579 | |
580 | /* | |
0ae4d4ae RL |
581 | * Receive a frame for a local port. |
582 | * | |
583 | * STATUS: OPTIONAL | |
42e9a92f | 584 | */ |
3a3b42bf RL |
585 | void (*lport_recv)(struct fc_lport *, struct fc_seq *, |
586 | struct fc_frame *); | |
42e9a92f | 587 | |
0ae4d4ae RL |
588 | /* |
589 | * Reset the local port. | |
590 | * | |
591 | * STATUS: OPTIONAL | |
42e9a92f | 592 | */ |
0ae4d4ae | 593 | int (*lport_reset)(struct fc_lport *); |
42e9a92f | 594 | |
093bb6a2 JE |
595 | /* |
596 | * Set the local port FC_ID. | |
597 | * | |
598 | * This may be provided by the LLD to allow it to be | |
599 | * notified when the local port is assigned a FC-ID. | |
600 | * | |
601 | * The frame, if non-NULL, is the incoming frame with the | |
602 | * FLOGI LS_ACC or FLOGI, and may contain the granted MAC | |
603 | * address for the LLD. The frame pointer may be NULL if | |
604 | * no MAC is associated with this assignment (LOGO or PLOGI). | |
605 | * | |
606 | * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid. | |
607 | * | |
608 | * Note: this is called with the local port mutex held. | |
609 | * | |
610 | * STATUS: OPTIONAL | |
611 | */ | |
612 | void (*lport_set_port_id)(struct fc_lport *, u32 port_id, | |
613 | struct fc_frame *); | |
614 | ||
5101ff99 | 615 | /* |
9737e6a7 RL |
616 | * Create a remote port with a given port ID |
617 | * | |
618 | * STATUS: OPTIONAL | |
5101ff99 | 619 | */ |
9737e6a7 | 620 | struct fc_rport_priv *(*rport_create)(struct fc_lport *, u32); |
5101ff99 | 621 | |
42e9a92f RL |
622 | /* |
623 | * Initiates the RP state machine. It is called from the LP module. | |
624 | * This function will issue the following commands to the N_Port | |
625 | * identified by the FC ID provided. | |
626 | * | |
627 | * - PLOGI | |
628 | * - PRLI | |
629 | * - RTV | |
0ae4d4ae RL |
630 | * |
631 | * STATUS: OPTIONAL | |
42e9a92f | 632 | */ |
9fb9d328 | 633 | int (*rport_login)(struct fc_rport_priv *); |
42e9a92f RL |
634 | |
635 | /* | |
636 | * Logoff, and remove the rport from the transport if | |
637 | * it had been added. This will send a LOGO to the target. | |
0ae4d4ae RL |
638 | * |
639 | * STATUS: OPTIONAL | |
42e9a92f | 640 | */ |
9fb9d328 | 641 | int (*rport_logoff)(struct fc_rport_priv *); |
42e9a92f RL |
642 | |
643 | /* | |
644 | * Recieve a request from a remote port. | |
0ae4d4ae RL |
645 | * |
646 | * STATUS: OPTIONAL | |
42e9a92f RL |
647 | */ |
648 | void (*rport_recv_req)(struct fc_seq *, struct fc_frame *, | |
131203a1 | 649 | struct fc_lport *); |
42e9a92f | 650 | |
0ae4d4ae RL |
651 | /* |
652 | * lookup an rport by it's port ID. | |
653 | * | |
654 | * STATUS: OPTIONAL | |
42e9a92f | 655 | */ |
9fb9d328 | 656 | struct fc_rport_priv *(*rport_lookup)(const struct fc_lport *, u32); |
42e9a92f | 657 | |
f211fa51 JE |
658 | /* |
659 | * Destroy an rport after final kref_put(). | |
660 | * The argument is a pointer to the kref inside the fc_rport_priv. | |
661 | */ | |
662 | void (*rport_destroy)(struct kref *); | |
663 | ||
42e9a92f RL |
664 | /* |
665 | * Send a fcp cmd from fsp pkt. | |
666 | * Called with the SCSI host lock unlocked and irqs disabled. | |
667 | * | |
668 | * The resp handler is called when FCP_RSP received. | |
669 | * | |
0ae4d4ae | 670 | * STATUS: OPTIONAL |
42e9a92f | 671 | */ |
3a3b42bf RL |
672 | int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *, |
673 | void (*resp)(struct fc_seq *, struct fc_frame *, | |
674 | void *)); | |
42e9a92f RL |
675 | |
676 | /* | |
0ae4d4ae RL |
677 | * Cleanup the FCP layer, used durring link down and reset |
678 | * | |
679 | * STATUS: OPTIONAL | |
42e9a92f | 680 | */ |
3a3b42bf | 681 | void (*fcp_cleanup)(struct fc_lport *); |
42e9a92f RL |
682 | |
683 | /* | |
684 | * Abort all I/O on a local port | |
0ae4d4ae RL |
685 | * |
686 | * STATUS: OPTIONAL | |
42e9a92f | 687 | */ |
3a3b42bf | 688 | void (*fcp_abort_io)(struct fc_lport *); |
42e9a92f | 689 | |
0ae4d4ae RL |
690 | /* |
691 | * Receive a request for the discovery layer. | |
692 | * | |
693 | * STATUS: OPTIONAL | |
42e9a92f | 694 | */ |
3a3b42bf RL |
695 | void (*disc_recv_req)(struct fc_seq *, struct fc_frame *, |
696 | struct fc_lport *); | |
42e9a92f RL |
697 | |
698 | /* | |
699 | * Start discovery for a local port. | |
0ae4d4ae RL |
700 | * |
701 | * STATUS: OPTIONAL | |
42e9a92f RL |
702 | */ |
703 | void (*disc_start)(void (*disc_callback)(struct fc_lport *, | |
704 | enum fc_disc_event), | |
705 | struct fc_lport *); | |
706 | ||
707 | /* | |
708 | * Stop discovery for a given lport. This will remove | |
709 | * all discovered rports | |
0ae4d4ae RL |
710 | * |
711 | * STATUS: OPTIONAL | |
42e9a92f RL |
712 | */ |
713 | void (*disc_stop) (struct fc_lport *); | |
714 | ||
715 | /* | |
716 | * Stop discovery for a given lport. This will block | |
717 | * until all discovered rports are deleted from the | |
718 | * FC transport class | |
0ae4d4ae RL |
719 | * |
720 | * STATUS: OPTIONAL | |
42e9a92f RL |
721 | */ |
722 | void (*disc_stop_final) (struct fc_lport *); | |
723 | }; | |
724 | ||
3a3b42bf RL |
725 | /** |
726 | * struct fc_disc - Discovery context | |
727 | * @retry_count: Number of retries | |
728 | * @pending: 1 if discovery is pending, 0 if not | |
729 | * @requesting: 1 if discovery has been requested, 0 if not | |
730 | * @seq_count: Number of sequences used for discovery | |
731 | * @buf_len: Length of the discovery buffer | |
732 | * @disc_id: Discovery ID | |
733 | * @rports: List of discovered remote ports | |
734 | * @lport: The local port that discovery is for | |
735 | * @disc_mutex: Mutex that protects the discovery context | |
736 | * @partial_buf: Partial name buffer (if names are returned | |
737 | * in multiple frames) | |
738 | * @disc_work: handle for delayed work context | |
739 | * @disc_callback: Callback routine called when discovery completes | |
740 | */ | |
42e9a92f | 741 | struct fc_disc { |
3a3b42bf RL |
742 | unsigned char retry_count; |
743 | unsigned char pending; | |
744 | unsigned char requested; | |
745 | unsigned short seq_count; | |
746 | unsigned char buf_len; | |
747 | u16 disc_id; | |
748 | ||
749 | struct list_head rports; | |
750 | struct fc_lport *lport; | |
751 | struct mutex disc_mutex; | |
752 | struct fc_gpn_ft_resp partial_buf; | |
753 | struct delayed_work disc_work; | |
42e9a92f RL |
754 | |
755 | void (*disc_callback)(struct fc_lport *, | |
756 | enum fc_disc_event); | |
42e9a92f RL |
757 | }; |
758 | ||
3a3b42bf RL |
759 | /** |
760 | * struct fc_lport - Local port | |
761 | * @host: The SCSI host associated with a local port | |
762 | * @ema_list: Exchange manager anchor list | |
763 | * @dns_rdata: The directory server remote port | |
764 | * @ptp_rdata: Point to point remote port | |
765 | * @scsi_priv: FCP layer internal data | |
766 | * @disc: Discovery context | |
767 | * @vports: Child vports if N_Port | |
768 | * @vport: Parent vport if VN_Port | |
769 | * @tt: Libfc function template | |
770 | * @link_up: Link state (1 = link up, 0 = link down) | |
771 | * @qfull: Queue state (1 queue is full, 0 queue is not full) | |
772 | * @state: Identifies the state | |
773 | * @boot_time: Timestamp indicating when the local port came online | |
774 | * @host_stats: SCSI host statistics | |
775 | * @dev_stats: FCoE device stats (TODO: libfc should not be | |
776 | * FCoE aware) | |
777 | * @retry_count: Number of retries in the current state | |
778 | * @wwpn: World Wide Port Name | |
779 | * @wwnn: World Wide Node Name | |
780 | * @service_params: Common service parameters | |
781 | * @e_d_tov: Error detection timeout value | |
782 | * @r_a_tov: Resouce allocation timeout value | |
783 | * @rnid_gen: RNID information | |
784 | * @sg_supp: Indicates if scatter gather is supported | |
785 | * @seq_offload: Indicates if sequence offload is supported | |
786 | * @crc_offload: Indicates if CRC offload is supported | |
787 | * @lro_enabled: Indicates if large receive offload is supported | |
788 | * @does_npiv: Supports multiple vports | |
789 | * @npiv_enabled: Switch/fabric allows NPIV | |
790 | * @mfs: The maximum Fibre Channel payload size | |
791 | * @max_retry_count: The maximum retry attempts | |
792 | * @max_rport_retry_count: The maximum remote port retry attempts | |
793 | * @lro_xid: The maximum XID for LRO | |
794 | * @lso_max: The maximum large offload send size | |
795 | * @fcts: FC-4 type mask | |
796 | * @lp_mutex: Mutex to protect the local port | |
797 | * @list: Handle for list of local ports | |
798 | * @retry_work: Handle to local port for delayed retry context | |
799 | */ | |
42e9a92f | 800 | struct fc_lport { |
42e9a92f | 801 | /* Associations */ |
3a3b42bf RL |
802 | struct Scsi_Host *host; |
803 | struct list_head ema_list; | |
804 | struct fc_rport_priv *dns_rdata; | |
805 | struct fc_rport_priv *ptp_rdata; | |
806 | void *scsi_priv; | |
807 | struct fc_disc disc; | |
808 | ||
809 | /* Virtual port information */ | |
810 | struct list_head vports; | |
811 | struct fc_vport *vport; | |
42e9a92f RL |
812 | |
813 | /* Operational Information */ | |
814 | struct libfc_function_template tt; | |
3a3b42bf RL |
815 | u8 link_up; |
816 | u8 qfull; | |
817 | enum fc_lport_state state; | |
818 | unsigned long boot_time; | |
819 | struct fc_host_statistics host_stats; | |
820 | struct fcoe_dev_stats *dev_stats; | |
821 | u8 retry_count; | |
822 | ||
823 | /* Fabric information */ | |
824 | u64 wwpn; | |
825 | u64 wwnn; | |
826 | unsigned int service_params; | |
827 | unsigned int e_d_tov; | |
828 | unsigned int r_a_tov; | |
829 | struct fc_els_rnid_gen rnid_gen; | |
42e9a92f RL |
830 | |
831 | /* Capabilities */ | |
3a3b42bf RL |
832 | u32 sg_supp:1; |
833 | u32 seq_offload:1; | |
834 | u32 crc_offload:1; | |
835 | u32 lro_enabled:1; | |
836 | u32 does_npiv:1; | |
837 | u32 npiv_enabled:1; | |
838 | u32 mfs; | |
839 | u8 max_retry_count; | |
840 | u8 max_rport_retry_count; | |
841 | u16 link_speed; | |
842 | u16 link_supported_speeds; | |
843 | u16 lro_xid; | |
844 | unsigned int lso_max; | |
845 | struct fc_ns_fts fcts; | |
42e9a92f RL |
846 | |
847 | /* Miscellaneous */ | |
3a3b42bf RL |
848 | struct mutex lp_mutex; |
849 | struct list_head list; | |
850 | struct delayed_work retry_work; | |
42e9a92f RL |
851 | }; |
852 | ||
34f42a07 | 853 | /* |
42e9a92f RL |
854 | * FC_LPORT HELPER FUNCTIONS |
855 | *****************************/ | |
3a3b42bf RL |
856 | |
857 | /** | |
858 | * fc_lport_test_ready() - Determine if a local port is in the READY state | |
859 | * @lport: The local port to test | |
860 | */ | |
861 | static inline int fc_lport_test_ready(struct fc_lport *lport) | |
42e9a92f | 862 | { |
3a3b42bf | 863 | return lport->state == LPORT_ST_READY; |
42e9a92f RL |
864 | } |
865 | ||
3a3b42bf RL |
866 | /** |
867 | * fc_set_wwnn() - Set the World Wide Node Name of a local port | |
868 | * @lport: The local port whose WWNN is to be set | |
869 | * @wwnn: The new WWNN | |
870 | */ | |
871 | static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn) | |
42e9a92f | 872 | { |
3a3b42bf | 873 | lport->wwnn = wwnn; |
42e9a92f RL |
874 | } |
875 | ||
3a3b42bf RL |
876 | /** |
877 | * fc_set_wwpn() - Set the World Wide Port Name of a local port | |
878 | * @lport: The local port whose WWPN is to be set | |
879 | * @wwnn: The new WWPN | |
880 | */ | |
881 | static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwnn) | |
42e9a92f | 882 | { |
3a3b42bf | 883 | lport->wwpn = wwnn; |
42e9a92f RL |
884 | } |
885 | ||
3a3b42bf RL |
886 | /** |
887 | * fc_lport_state_enter() - Change a local port's state | |
888 | * @lport: The local port whose state is to change | |
889 | * @state: The new state | |
890 | */ | |
891 | static inline void fc_lport_state_enter(struct fc_lport *lport, | |
42e9a92f RL |
892 | enum fc_lport_state state) |
893 | { | |
3a3b42bf RL |
894 | if (state != lport->state) |
895 | lport->retry_count = 0; | |
896 | lport->state = state; | |
42e9a92f RL |
897 | } |
898 | ||
3a3b42bf RL |
899 | /** |
900 | * fc_lport_init_stats() - Allocate per-CPU statistics for a local port | |
901 | * @lport: The local port whose statistics are to be initialized | |
902 | */ | |
903 | static inline int fc_lport_init_stats(struct fc_lport *lport) | |
582b45bc | 904 | { |
3a3b42bf RL |
905 | lport->dev_stats = alloc_percpu(struct fcoe_dev_stats); |
906 | if (!lport->dev_stats) | |
582b45bc RL |
907 | return -ENOMEM; |
908 | return 0; | |
909 | } | |
910 | ||
3a3b42bf RL |
911 | /** |
912 | * fc_lport_free_stats() - Free memory for a local port's statistics | |
913 | * @lport: The local port whose statistics are to be freed | |
914 | */ | |
915 | static inline void fc_lport_free_stats(struct fc_lport *lport) | |
582b45bc | 916 | { |
3a3b42bf | 917 | free_percpu(lport->dev_stats); |
582b45bc RL |
918 | } |
919 | ||
3a3b42bf RL |
920 | /** |
921 | * fc_lport_get_stats() - Get a local port's statistics | |
922 | * @lport: The local port whose statistics are to be retreived | |
923 | */ | |
924 | static inline struct fcoe_dev_stats *fc_lport_get_stats(struct fc_lport *lport) | |
582b45bc | 925 | { |
3a3b42bf | 926 | return per_cpu_ptr(lport->dev_stats, smp_processor_id()); |
582b45bc RL |
927 | } |
928 | ||
3a3b42bf RL |
929 | /** |
930 | * lport_priv() - Return the private data from a local port | |
931 | * @lport: The local port whose private data is to be retreived | |
932 | */ | |
933 | static inline void *lport_priv(const struct fc_lport *lport) | |
a0a25da2 | 934 | { |
3a3b42bf | 935 | return (void *)(lport + 1); |
a0a25da2 VD |
936 | } |
937 | ||
938 | /** | |
3a3b42bf RL |
939 | * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and |
940 | * LLD private data | |
941 | * @sht: The SCSI host template | |
942 | * @priv_size: Size of private data | |
a0a25da2 | 943 | * |
86221969 | 944 | * Returns: libfc lport |
a0a25da2 | 945 | */ |
86221969 | 946 | static inline struct fc_lport * |
a0a25da2 VD |
947 | libfc_host_alloc(struct scsi_host_template *sht, int priv_size) |
948 | { | |
86221969 CL |
949 | struct fc_lport *lport; |
950 | struct Scsi_Host *shost; | |
951 | ||
952 | shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size); | |
953 | if (!shost) | |
954 | return NULL; | |
955 | lport = shost_priv(shost); | |
956 | lport->host = shost; | |
957 | INIT_LIST_HEAD(&lport->ema_list); | |
174e1ebf | 958 | INIT_LIST_HEAD(&lport->vports); |
86221969 | 959 | return lport; |
a0a25da2 | 960 | } |
42e9a92f | 961 | |
34f42a07 | 962 | /* |
3a3b42bf | 963 | * FC_FCP HELPER FUNCTIONS |
42e9a92f | 964 | *****************************/ |
3a3b42bf RL |
965 | static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp) |
966 | { | |
967 | if (fsp && fsp->cmd) | |
968 | return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE; | |
969 | return false; | |
970 | } | |
42e9a92f RL |
971 | |
972 | /* | |
3a3b42bf RL |
973 | * LOCAL PORT LAYER |
974 | *****************************/ | |
975 | int fc_lport_init(struct fc_lport *); | |
976 | int fc_lport_destroy(struct fc_lport *); | |
977 | int fc_fabric_logoff(struct fc_lport *); | |
978 | int fc_fabric_login(struct fc_lport *); | |
8faecddb | 979 | void __fc_linkup(struct fc_lport *); |
42e9a92f | 980 | void fc_linkup(struct fc_lport *); |
8faecddb | 981 | void __fc_linkdown(struct fc_lport *); |
42e9a92f | 982 | void fc_linkdown(struct fc_lport *); |
3a3b42bf RL |
983 | void fc_vport_setlink(struct fc_lport *); |
984 | void fc_vports_linkchange(struct fc_lport *); | |
42e9a92f | 985 | int fc_lport_config(struct fc_lport *); |
42e9a92f | 986 | int fc_lport_reset(struct fc_lport *); |
3a3b42bf RL |
987 | int fc_set_mfs(struct fc_lport *, u32 mfs); |
988 | struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize); | |
989 | struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id); | |
990 | int fc_lport_bsg_request(struct fc_bsg_job *); | |
a51ab396 | 991 | |
34f42a07 | 992 | /* |
42e9a92f RL |
993 | * REMOTE PORT LAYER |
994 | *****************************/ | |
3a3b42bf RL |
995 | int fc_rport_init(struct fc_lport *); |
996 | void fc_rport_terminate_io(struct fc_rport *); | |
42e9a92f | 997 | |
34f42a07 | 998 | /* |
42e9a92f RL |
999 | * DISCOVERY LAYER |
1000 | *****************************/ | |
3a3b42bf | 1001 | int fc_disc_init(struct fc_lport *); |
42e9a92f | 1002 | |
34f42a07 | 1003 | /* |
3a3b42bf | 1004 | * FCP LAYER |
42e9a92f | 1005 | *****************************/ |
42e9a92f | 1006 | int fc_fcp_init(struct fc_lport *); |
3a3b42bf | 1007 | void fc_fcp_destroy(struct fc_lport *); |
42e9a92f RL |
1008 | |
1009 | /* | |
3a3b42bf RL |
1010 | * SCSI INTERACTION LAYER |
1011 | *****************************/ | |
1012 | int fc_queuecommand(struct scsi_cmnd *, | |
42e9a92f | 1013 | void (*done)(struct scsi_cmnd *)); |
3a3b42bf RL |
1014 | int fc_eh_abort(struct scsi_cmnd *); |
1015 | int fc_eh_device_reset(struct scsi_cmnd *); | |
1016 | int fc_eh_host_reset(struct scsi_cmnd *); | |
1017 | int fc_slave_alloc(struct scsi_device *); | |
1018 | int fc_change_queue_depth(struct scsi_device *, int qdepth, int reason); | |
1019 | int fc_change_queue_type(struct scsi_device *, int tag_type); | |
42e9a92f | 1020 | |
34f42a07 | 1021 | /* |
42e9a92f RL |
1022 | * ELS/CT interface |
1023 | *****************************/ | |
3a3b42bf RL |
1024 | int fc_elsct_init(struct fc_lport *); |
1025 | struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did, | |
1026 | struct fc_frame *, | |
11b56188 CL |
1027 | unsigned int op, |
1028 | void (*resp)(struct fc_seq *, | |
3a3b42bf | 1029 | struct fc_frame *, |
11b56188 CL |
1030 | void *arg), |
1031 | void *arg, u32 timer_msec); | |
1032 | void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *); | |
1033 | void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *); | |
42e9a92f RL |
1034 | |
1035 | ||
34f42a07 | 1036 | /* |
42e9a92f RL |
1037 | * EXCHANGE MANAGER LAYER |
1038 | *****************************/ | |
3a3b42bf RL |
1039 | int fc_exch_init(struct fc_lport *); |
1040 | struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *, | |
1041 | struct fc_exch_mgr *, | |
96316099 | 1042 | bool (*match)(struct fc_frame *)); |
3a3b42bf | 1043 | void fc_exch_mgr_del(struct fc_exch_mgr_anchor *); |
174e1ebf | 1044 | int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst); |
3a3b42bf RL |
1045 | struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class, |
1046 | u16 min_xid, u16 max_xid, | |
52ff878c | 1047 | bool (*match)(struct fc_frame *)); |
3a3b42bf RL |
1048 | void fc_exch_mgr_free(struct fc_lport *); |
1049 | void fc_exch_recv(struct fc_lport *, struct fc_frame *); | |
1f6ff364 | 1050 | void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); |
42e9a92f RL |
1051 | |
1052 | /* | |
1053 | * Functions for fc_functions_template | |
1054 | */ | |
3a3b42bf RL |
1055 | void fc_get_host_speed(struct Scsi_Host *); |
1056 | void fc_get_host_port_type(struct Scsi_Host *); | |
1057 | void fc_get_host_port_state(struct Scsi_Host *); | |
1058 | void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout); | |
42e9a92f RL |
1059 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *); |
1060 | ||
42e9a92f | 1061 | #endif /* _LIBFC_H_ */ |