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