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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 | ||
96ad8464 JE |
38 | #define FC_FC4_PROV_SIZE (FC_TYPE_FCP + 1) /* size of tables */ |
39 | ||
42e9a92f RL |
40 | /* |
41 | * libfc error codes | |
42 | */ | |
43 | #define FC_NO_ERR 0 /* no error */ | |
44 | #define FC_EX_TIMEOUT 1 /* Exchange timeout */ | |
45 | #define FC_EX_CLOSED 2 /* Exchange closed */ | |
46 | ||
3a3b42bf RL |
47 | /** |
48 | * enum fc_lport_state - Local port states | |
49 | * @LPORT_ST_DISABLED: Disabled | |
50 | * @LPORT_ST_FLOGI: Fabric login (FLOGI) sent | |
51 | * @LPORT_ST_DNS: Waiting for name server remote port to become ready | |
52 | * @LPORT_ST_RPN_ID: Register port name by ID (RPN_ID) sent | |
53 | * @LPORT_ST_RFT_ID: Register Fibre Channel types by ID (RFT_ID) sent | |
ab593b18 | 54 | * @LPORT_ST_RFF_ID: Register FC-4 Features by ID (RFF_ID) sent |
3a3b42bf RL |
55 | * @LPORT_ST_SCR: State Change Register (SCR) sent |
56 | * @LPORT_ST_READY: Ready for use | |
57 | * @LPORT_ST_LOGO: Local port logout (LOGO) sent | |
58 | * @LPORT_ST_RESET: Local port reset | |
42e9a92f | 59 | */ |
42e9a92f | 60 | enum fc_lport_state { |
b1d9fd55 | 61 | LPORT_ST_DISABLED = 0, |
42e9a92f RL |
62 | LPORT_ST_FLOGI, |
63 | LPORT_ST_DNS, | |
c9c7bd7a | 64 | LPORT_ST_RNN_ID, |
5baa17c3 | 65 | LPORT_ST_RSNN_NN, |
c9866a54 | 66 | LPORT_ST_RSPN_ID, |
42e9a92f | 67 | LPORT_ST_RFT_ID, |
ab593b18 | 68 | LPORT_ST_RFF_ID, |
42e9a92f RL |
69 | LPORT_ST_SCR, |
70 | LPORT_ST_READY, | |
71 | LPORT_ST_LOGO, | |
72 | LPORT_ST_RESET | |
73 | }; | |
74 | ||
75 | enum fc_disc_event { | |
76 | DISC_EV_NONE = 0, | |
77 | DISC_EV_SUCCESS, | |
78 | DISC_EV_FAILED | |
79 | }; | |
80 | ||
3a3b42bf RL |
81 | /** |
82 | * enum fc_rport_state - Remote port states | |
83 | * @RPORT_ST_INIT: Initialized | |
a7b12a27 JE |
84 | * @RPORT_ST_FLOGI: Waiting for FLOGI completion for point-to-multipoint |
85 | * @RPORT_ST_PLOGI_WAIT: Waiting for peer to login for point-to-multipoint | |
3a3b42bf RL |
86 | * @RPORT_ST_PLOGI: Waiting for PLOGI completion |
87 | * @RPORT_ST_PRLI: Waiting for PRLI completion | |
88 | * @RPORT_ST_RTV: Waiting for RTV completion | |
89 | * @RPORT_ST_READY: Ready for use | |
3a3b42bf RL |
90 | * @RPORT_ST_ADISC: Discover Address sent |
91 | * @RPORT_ST_DELETE: Remote port being deleted | |
3a3b42bf | 92 | */ |
42e9a92f | 93 | enum fc_rport_state { |
3a3b42bf | 94 | RPORT_ST_INIT, |
a7b12a27 JE |
95 | RPORT_ST_FLOGI, |
96 | RPORT_ST_PLOGI_WAIT, | |
3a3b42bf RL |
97 | RPORT_ST_PLOGI, |
98 | RPORT_ST_PRLI, | |
99 | RPORT_ST_RTV, | |
100 | RPORT_ST_READY, | |
3a3b42bf RL |
101 | RPORT_ST_ADISC, |
102 | RPORT_ST_DELETE, | |
42e9a92f RL |
103 | }; |
104 | ||
42e9a92f RL |
105 | /** |
106 | * struct fc_disc_port - temporary discovery port to hold rport identifiers | |
9737e6a7 RL |
107 | * @lp: Fibre Channel host port instance |
108 | * @peers: Node for list management during discovery and RSCN processing | |
109 | * @rport_work: Work struct for starting the rport state machine | |
110 | * @port_id: Port ID of the discovered port | |
42e9a92f RL |
111 | */ |
112 | struct fc_disc_port { | |
3a3b42bf RL |
113 | struct fc_lport *lp; |
114 | struct list_head peers; | |
115 | struct work_struct rport_work; | |
116 | u32 port_id; | |
42e9a92f RL |
117 | }; |
118 | ||
3a3b42bf RL |
119 | /** |
120 | * enum fc_rport_event - Remote port events | |
121 | * @RPORT_EV_NONE: No event | |
122 | * @RPORT_EV_READY: Remote port is ready for use | |
123 | * @RPORT_EV_FAILED: State machine failed, remote port is not ready | |
124 | * @RPORT_EV_STOP: Remote port has been stopped | |
125 | * @RPORT_EV_LOGO: Remote port logout (LOGO) sent | |
126 | */ | |
42e9a92f RL |
127 | enum fc_rport_event { |
128 | RPORT_EV_NONE = 0, | |
4c0f62b5 | 129 | RPORT_EV_READY, |
42e9a92f RL |
130 | RPORT_EV_FAILED, |
131 | RPORT_EV_STOP, | |
132 | RPORT_EV_LOGO | |
133 | }; | |
134 | ||
9fb9d328 JE |
135 | struct fc_rport_priv; |
136 | ||
3a3b42bf RL |
137 | /** |
138 | * struct fc_rport_operations - Operations for a remote port | |
139 | * @event_callback: Function to be called for remote port events | |
140 | */ | |
42e9a92f | 141 | struct fc_rport_operations { |
9fb9d328 | 142 | void (*event_callback)(struct fc_lport *, struct fc_rport_priv *, |
42e9a92f RL |
143 | enum fc_rport_event); |
144 | }; | |
145 | ||
146 | /** | |
147 | * struct fc_rport_libfc_priv - libfc internal information about a remote port | |
3a3b42bf RL |
148 | * @local_port: The associated local port |
149 | * @rp_state: Indicates READY for I/O or DELETE when blocked | |
150 | * @flags: REC and RETRY supported flags | |
151 | * @e_d_tov: Error detect timeout value (in msec) | |
152 | * @r_a_tov: Resource allocation timeout value (in msec) | |
9e9d0452 JE |
153 | */ |
154 | struct fc_rport_libfc_priv { | |
155 | struct fc_lport *local_port; | |
156 | enum fc_rport_state rp_state; | |
157 | u16 flags; | |
158 | #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0) | |
159 | #define FC_RP_FLAGS_RETRY (1 << 1) | |
4b2164d4 | 160 | #define FC_RP_STARTED (1 << 2) |
9e9d0452 JE |
161 | unsigned int e_d_tov; |
162 | unsigned int r_a_tov; | |
163 | }; | |
164 | ||
165 | /** | |
3a3b42bf RL |
166 | * struct fc_rport_priv - libfc remote port and discovery info |
167 | * @local_port: The associated local port | |
168 | * @rport: The FC transport remote port | |
169 | * @kref: Reference counter | |
170 | * @rp_state: Enumeration that tracks progress of PLOGI, PRLI, | |
171 | * and RTV exchanges | |
172 | * @ids: The remote port identifiers and roles | |
4b2164d4 | 173 | * @flags: STARTED, REC and RETRY_SUPPORTED flags |
3a3b42bf RL |
174 | * @max_seq: Maximum number of concurrent sequences |
175 | * @disc_id: The discovery identifier | |
176 | * @maxframe_size: The maximum frame size | |
177 | * @retries: The retry count for the current state | |
f034260d | 178 | * @major_retries: The retry count for the entire PLOGI/PRLI state machine |
3a3b42bf RL |
179 | * @e_d_tov: Error detect timeout value (in msec) |
180 | * @r_a_tov: Resource allocation timeout value (in msec) | |
181 | * @rp_mutex: The mutex that protects the remote port | |
182 | * @retry_work: Handle for retries | |
183 | * @event_callback: Callback when READY, FAILED or LOGO states complete | |
96ad8464 | 184 | * @prli_count: Count of open PRLI sessions in providers |
42e90414 | 185 | * @rcu: Structure used for freeing in an RCU-safe manner |
42e9a92f | 186 | */ |
9e9d0452 | 187 | struct fc_rport_priv { |
3a3b42bf RL |
188 | struct fc_lport *local_port; |
189 | struct fc_rport *rport; | |
190 | struct kref kref; | |
191 | enum fc_rport_state rp_state; | |
f211fa51 | 192 | struct fc_rport_identifiers ids; |
3a3b42bf RL |
193 | u16 flags; |
194 | u16 max_seq; | |
195 | u16 disc_id; | |
196 | u16 maxframe_size; | |
197 | unsigned int retries; | |
f034260d | 198 | unsigned int major_retries; |
3a3b42bf RL |
199 | unsigned int e_d_tov; |
200 | unsigned int r_a_tov; | |
201 | struct mutex rp_mutex; | |
202 | struct delayed_work retry_work; | |
203 | enum fc_rport_event event; | |
204 | struct fc_rport_operations *ops; | |
205 | struct list_head peers; | |
206 | struct work_struct event_work; | |
207 | u32 supported_classes; | |
96ad8464 | 208 | u16 prli_count; |
42e90414 | 209 | struct rcu_head rcu; |
42e9a92f RL |
210 | }; |
211 | ||
3a3b42bf RL |
212 | /** |
213 | * struct fcoe_dev_stats - fcoe stats structure | |
214 | * @SecondsSinceLastReset: Seconds since the last reset | |
215 | * @TxFrames: Number of transmitted frames | |
216 | * @TxWords: Number of transmitted words | |
217 | * @RxFrames: Number of received frames | |
218 | * @RxWords: Number of received words | |
219 | * @ErrorFrames: Number of received error frames | |
220 | * @DumpedFrames: Number of dumped frames | |
221 | * @LinkFailureCount: Number of link failures | |
222 | * @LossOfSignalCount: Number for signal losses | |
223 | * @InvalidTxWordCount: Number of invalid transmitted words | |
224 | * @InvalidCRCCount: Number of invalid CRCs | |
225 | * @InputRequests: Number of input requests | |
226 | * @OutputRequests: Number of output requests | |
227 | * @ControlRequests: Number of control requests | |
5f0e385f JE |
228 | * @InputBytes: Number of received bytes |
229 | * @OutputBytes: Number of transmitted bytes | |
6580bbd0 YZ |
230 | * @VLinkFailureCount: Number of virtual link failures |
231 | * @MissDiscAdvCount: Number of missing FIP discovery advertisement | |
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; | |
5f0e385f JE |
248 | u64 InputBytes; |
249 | u64 OutputBytes; | |
6580bbd0 YZ |
250 | u64 VLinkFailureCount; |
251 | u64 MissDiscAdvCount; | |
42e9a92f RL |
252 | }; |
253 | ||
3a3b42bf RL |
254 | /** |
255 | * struct fc_seq_els_data - ELS data used for passing ELS specific responses | |
3a3b42bf RL |
256 | * @reason: The reason for rejection |
257 | * @explan: The explaination of the rejection | |
258 | * | |
259 | * Mainly used by the exchange manager layer. | |
42e9a92f RL |
260 | */ |
261 | struct fc_seq_els_data { | |
42e9a92f RL |
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 | |
3a3b42bf RL |
270 | * @ref_cnt: Reference count |
271 | * @scsi_pkt_lock: Lock to protect the SCSI packet (must be taken before the | |
272 | * host_lock if both are to be held at the same time) | |
273 | * @cmd: The SCSI command (set and clear with the host_lock held) | |
274 | * @list: Tracks queued commands (accessed with the host_lock held) | |
275 | * @timer: The command timer | |
276 | * @tm_done: Completion indicator | |
277 | * @wait_for_comp: Indicator to wait for completion of the I/O (in jiffies) | |
278 | * @start_time: Timestamp indicating the start of the I/O (in jiffies) | |
279 | * @end_time: Timestamp indicating the end of the I/O (in jiffies) | |
280 | * @last_pkt_time: Timestamp of the last frame received (in jiffies) | |
281 | * @data_len: The length of the data | |
282 | * @cdb_cmd: The CDB command | |
283 | * @xfer_len: The transfer length | |
284 | * @xfer_ddp: Indicates if this transfer used DDP (XID of the exchange | |
285 | * will be set here if DDP was setup) | |
286 | * @xfer_contig_end: The offset into the buffer if the buffer is contiguous | |
287 | * (Tx and Rx) | |
288 | * @max_payload: The maximum payload size (in bytes) | |
289 | * @io_status: SCSI result (upper 24 bits) | |
290 | * @cdb_status: CDB status | |
291 | * @status_code: FCP I/O status | |
292 | * @scsi_comp_flags: Completion flags (bit 3 Underrun bit 2: overrun) | |
293 | * @req_flags: Request flags (bit 0: read bit:1 write) | |
294 | * @scsi_resid: SCSI residule length | |
295 | * @rport: The remote port that the SCSI command is targeted at | |
296 | * @seq_ptr: The sequence that will carry the SCSI command | |
297 | * @recov_retry: Number of recovery retries | |
298 | * @recov_seq: The sequence for REC or SRR | |
42e9a92f RL |
299 | */ |
300 | struct fc_fcp_pkt { | |
3a3b42bf RL |
301 | /* Housekeeping information */ |
302 | struct fc_lport *lp; | |
303 | u16 state; | |
3a3b42bf RL |
304 | atomic_t ref_cnt; |
305 | spinlock_t scsi_pkt_lock; | |
306 | ||
307 | /* SCSI I/O related information */ | |
308 | struct scsi_cmnd *cmd; | |
309 | struct list_head list; | |
310 | ||
311 | /* Timeout related information */ | |
312 | struct timer_list timer; | |
42e9a92f | 313 | struct completion tm_done; |
3a3b42bf RL |
314 | int wait_for_comp; |
315 | unsigned long start_time; | |
316 | unsigned long end_time; | |
317 | unsigned long last_pkt_time; | |
318 | ||
319 | /* SCSI command and data transfer information */ | |
320 | u32 data_len; | |
321 | ||
322 | /* Transport related veriables */ | |
323 | struct fcp_cmnd cdb_cmd; | |
324 | size_t xfer_len; | |
325 | u16 xfer_ddp; | |
326 | u32 xfer_contig_end; | |
327 | u16 max_payload; | |
328 | ||
329 | /* SCSI/FCP return status */ | |
330 | u32 io_status; | |
331 | u8 cdb_status; | |
332 | u8 status_code; | |
333 | u8 scsi_comp_flags; | |
334 | u32 req_flags; | |
335 | u32 scsi_resid; | |
336 | ||
337 | /* Associated structures */ | |
338 | struct fc_rport *rport; | |
339 | struct fc_seq *seq_ptr; | |
340 | ||
341 | /* Error Processing information */ | |
342 | u8 recov_retry; | |
343 | struct fc_seq *recov_seq; | |
42e9a92f RL |
344 | }; |
345 | ||
346 | /* | |
347 | * Structure and function definitions for managing Fibre Channel Exchanges | |
348 | * and Sequences | |
349 | * | |
350 | * fc_exch holds state for one exchange and links to its active sequence. | |
351 | * | |
352 | * fc_seq holds the state for an individual sequence. | |
353 | */ | |
354 | ||
355 | struct fc_exch_mgr; | |
96316099 | 356 | struct fc_exch_mgr_anchor; |
3a3b42bf | 357 | extern u16 fc_cpu_mask; /* cpu mask for possible cpus */ |
42e9a92f | 358 | |
3a3b42bf RL |
359 | /** |
360 | * struct fc_seq - FC sequence | |
361 | * @id: The sequence ID | |
362 | * @ssb_stat: Status flags for the sequence status block (SSB) | |
363 | * @cnt: Number of frames sent so far | |
364 | * @rec_data: FC-4 value for REC | |
42e9a92f RL |
365 | */ |
366 | struct fc_seq { | |
3a3b42bf RL |
367 | u8 id; |
368 | u16 ssb_stat; | |
369 | u16 cnt; | |
370 | u32 rec_data; | |
42e9a92f RL |
371 | }; |
372 | ||
373 | #define FC_EX_DONE (1 << 0) /* ep is completed */ | |
374 | #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */ | |
375 | ||
3a3b42bf RL |
376 | /** |
377 | * struct fc_exch - Fibre Channel Exchange | |
378 | * @em: Exchange manager | |
379 | * @pool: Exchange pool | |
380 | * @state: The exchange's state | |
381 | * @xid: The exchange ID | |
382 | * @ex_list: Handle used by the EM to track free exchanges | |
383 | * @ex_lock: Lock that protects the exchange | |
384 | * @ex_refcnt: Reference count | |
385 | * @timeout_work: Handle for timeout handler | |
386 | * @lp: The local port that this exchange is on | |
387 | * @oxid: Originator's exchange ID | |
388 | * @rxid: Responder's exchange ID | |
389 | * @oid: Originator's FCID | |
390 | * @sid: Source FCID | |
391 | * @did: Destination FCID | |
392 | * @esb_stat: ESB exchange status | |
393 | * @r_a_tov: Resouce allocation time out value (in msecs) | |
394 | * @seq_id: The next sequence ID to use | |
f60e12e9 | 395 | * @encaps: encapsulation information for lower-level driver |
3a3b42bf RL |
396 | * @f_ctl: F_CTL flags for the sequence |
397 | * @fh_type: The frame type | |
398 | * @class: The class of service | |
399 | * @seq: The sequence in use on this exchange | |
400 | * @resp: Callback for responses on this exchange | |
401 | * @destructor: Called when destroying the exchange | |
402 | * @arg: Passed as a void pointer to the resp() callback | |
42e9a92f RL |
403 | * |
404 | * Locking notes: The ex_lock protects following items: | |
405 | * state, esb_stat, f_ctl, seq.ssb_stat | |
406 | * seq_id | |
407 | * sequence allocation | |
408 | */ | |
409 | struct fc_exch { | |
3a3b42bf RL |
410 | struct fc_exch_mgr *em; |
411 | struct fc_exch_pool *pool; | |
412 | u32 state; | |
413 | u16 xid; | |
414 | struct list_head ex_list; | |
415 | spinlock_t ex_lock; | |
416 | atomic_t ex_refcnt; | |
417 | struct delayed_work timeout_work; | |
418 | struct fc_lport *lp; | |
419 | u16 oxid; | |
420 | u16 rxid; | |
421 | u32 oid; | |
422 | u32 sid; | |
423 | u32 did; | |
424 | u32 esb_stat; | |
425 | u32 r_a_tov; | |
426 | u8 seq_id; | |
f60e12e9 | 427 | u8 encaps; |
3a3b42bf RL |
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); |
b84056bf YZ |
507 | /* |
508 | * Allow LLD to fill its own Link Error Status Block | |
509 | * | |
510 | * STATUS: OPTIONAL | |
511 | */ | |
512 | void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); | |
42e9a92f | 513 | /* |
0ae4d4ae RL |
514 | * Send a frame using an existing sequence and exchange. |
515 | * | |
516 | * STATUS: OPTIONAL | |
42e9a92f | 517 | */ |
3a3b42bf RL |
518 | int (*seq_send)(struct fc_lport *, struct fc_seq *, |
519 | struct fc_frame *); | |
42e9a92f RL |
520 | |
521 | /* | |
92261156 | 522 | * Send an ELS response using infomation from the received frame. |
0ae4d4ae RL |
523 | * |
524 | * STATUS: OPTIONAL | |
42e9a92f | 525 | */ |
92261156 | 526 | void (*seq_els_rsp_send)(struct fc_frame *, enum fc_els_cmd, |
3a3b42bf | 527 | struct fc_seq_els_data *); |
42e9a92f RL |
528 | |
529 | /* | |
530 | * Abort an exchange and sequence. Generally called because of a | |
531 | * exchange timeout or an abort from the upper layer. | |
532 | * | |
533 | * A timer_msec can be specified for abort timeout, if non-zero | |
534 | * timer_msec value is specified then exchange resp handler | |
535 | * will be called with timeout error if no response to abort. | |
0ae4d4ae RL |
536 | * |
537 | * STATUS: OPTIONAL | |
42e9a92f | 538 | */ |
3a3b42bf | 539 | int (*seq_exch_abort)(const struct fc_seq *, |
42e9a92f RL |
540 | unsigned int timer_msec); |
541 | ||
542 | /* | |
543 | * Indicate that an exchange/sequence tuple is complete and the memory | |
544 | * allocated for the related objects may be freed. | |
0ae4d4ae RL |
545 | * |
546 | * STATUS: OPTIONAL | |
42e9a92f | 547 | */ |
3a3b42bf | 548 | void (*exch_done)(struct fc_seq *); |
42e9a92f | 549 | |
42e9a92f RL |
550 | /* |
551 | * Start a new sequence on the same exchange/sequence tuple. | |
0ae4d4ae RL |
552 | * |
553 | * STATUS: OPTIONAL | |
42e9a92f | 554 | */ |
3a3b42bf | 555 | struct fc_seq *(*seq_start_next)(struct fc_seq *); |
42e9a92f | 556 | |
239e8104 JE |
557 | /* |
558 | * Assign a sequence for an incoming request frame. | |
559 | * | |
560 | * STATUS: OPTIONAL | |
561 | */ | |
562 | struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *); | |
563 | ||
42e9a92f RL |
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 | */ |
92261156 | 585 | void (*lport_recv)(struct fc_lport *, struct fc_frame *); |
42e9a92f | 586 | |
0ae4d4ae RL |
587 | /* |
588 | * Reset the local port. | |
589 | * | |
590 | * STATUS: OPTIONAL | |
42e9a92f | 591 | */ |
0ae4d4ae | 592 | int (*lport_reset)(struct fc_lport *); |
42e9a92f | 593 | |
093bb6a2 JE |
594 | /* |
595 | * Set the local port FC_ID. | |
596 | * | |
597 | * This may be provided by the LLD to allow it to be | |
598 | * notified when the local port is assigned a FC-ID. | |
599 | * | |
600 | * The frame, if non-NULL, is the incoming frame with the | |
601 | * FLOGI LS_ACC or FLOGI, and may contain the granted MAC | |
602 | * address for the LLD. The frame pointer may be NULL if | |
603 | * no MAC is associated with this assignment (LOGO or PLOGI). | |
604 | * | |
605 | * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid. | |
606 | * | |
607 | * Note: this is called with the local port mutex held. | |
608 | * | |
609 | * STATUS: OPTIONAL | |
610 | */ | |
611 | void (*lport_set_port_id)(struct fc_lport *, u32 port_id, | |
612 | struct fc_frame *); | |
613 | ||
5101ff99 | 614 | /* |
9737e6a7 RL |
615 | * Create a remote port with a given port ID |
616 | * | |
617 | * STATUS: OPTIONAL | |
5101ff99 | 618 | */ |
9737e6a7 | 619 | struct fc_rport_priv *(*rport_create)(struct fc_lport *, u32); |
5101ff99 | 620 | |
42e9a92f RL |
621 | /* |
622 | * Initiates the RP state machine. It is called from the LP module. | |
623 | * This function will issue the following commands to the N_Port | |
624 | * identified by the FC ID provided. | |
625 | * | |
626 | * - PLOGI | |
627 | * - PRLI | |
628 | * - RTV | |
0ae4d4ae RL |
629 | * |
630 | * STATUS: OPTIONAL | |
42e9a92f | 631 | */ |
9fb9d328 | 632 | int (*rport_login)(struct fc_rport_priv *); |
42e9a92f RL |
633 | |
634 | /* | |
635 | * Logoff, and remove the rport from the transport if | |
636 | * it had been added. This will send a LOGO to the target. | |
0ae4d4ae RL |
637 | * |
638 | * STATUS: OPTIONAL | |
42e9a92f | 639 | */ |
9fb9d328 | 640 | int (*rport_logoff)(struct fc_rport_priv *); |
42e9a92f RL |
641 | |
642 | /* | |
643 | * Recieve a request from a remote port. | |
0ae4d4ae RL |
644 | * |
645 | * STATUS: OPTIONAL | |
42e9a92f | 646 | */ |
92261156 | 647 | void (*rport_recv_req)(struct fc_lport *, struct fc_frame *); |
42e9a92f | 648 | |
0ae4d4ae RL |
649 | /* |
650 | * lookup an rport by it's port ID. | |
651 | * | |
652 | * STATUS: OPTIONAL | |
42e9a92f | 653 | */ |
9fb9d328 | 654 | struct fc_rport_priv *(*rport_lookup)(const struct fc_lport *, u32); |
42e9a92f | 655 | |
f211fa51 JE |
656 | /* |
657 | * Destroy an rport after final kref_put(). | |
658 | * The argument is a pointer to the kref inside the fc_rport_priv. | |
659 | */ | |
660 | void (*rport_destroy)(struct kref *); | |
661 | ||
42e9a92f RL |
662 | /* |
663 | * Send a fcp cmd from fsp pkt. | |
664 | * Called with the SCSI host lock unlocked and irqs disabled. | |
665 | * | |
666 | * The resp handler is called when FCP_RSP received. | |
667 | * | |
0ae4d4ae | 668 | * STATUS: OPTIONAL |
42e9a92f | 669 | */ |
3a3b42bf RL |
670 | int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *, |
671 | void (*resp)(struct fc_seq *, struct fc_frame *, | |
672 | void *)); | |
42e9a92f RL |
673 | |
674 | /* | |
0ae4d4ae RL |
675 | * Cleanup the FCP layer, used durring link down and reset |
676 | * | |
677 | * STATUS: OPTIONAL | |
42e9a92f | 678 | */ |
3a3b42bf | 679 | void (*fcp_cleanup)(struct fc_lport *); |
42e9a92f RL |
680 | |
681 | /* | |
682 | * Abort all I/O on a local port | |
0ae4d4ae RL |
683 | * |
684 | * STATUS: OPTIONAL | |
42e9a92f | 685 | */ |
3a3b42bf | 686 | void (*fcp_abort_io)(struct fc_lport *); |
42e9a92f | 687 | |
0ae4d4ae RL |
688 | /* |
689 | * Receive a request for the discovery layer. | |
690 | * | |
691 | * STATUS: OPTIONAL | |
42e9a92f | 692 | */ |
92261156 | 693 | void (*disc_recv_req)(struct fc_lport *, struct fc_frame *); |
42e9a92f RL |
694 | |
695 | /* | |
696 | * Start discovery for a local port. | |
0ae4d4ae RL |
697 | * |
698 | * STATUS: OPTIONAL | |
42e9a92f RL |
699 | */ |
700 | void (*disc_start)(void (*disc_callback)(struct fc_lport *, | |
701 | enum fc_disc_event), | |
702 | struct fc_lport *); | |
703 | ||
704 | /* | |
705 | * Stop discovery for a given lport. This will remove | |
706 | * all discovered rports | |
0ae4d4ae RL |
707 | * |
708 | * STATUS: OPTIONAL | |
42e9a92f RL |
709 | */ |
710 | void (*disc_stop) (struct fc_lport *); | |
711 | ||
712 | /* | |
713 | * Stop discovery for a given lport. This will block | |
714 | * until all discovered rports are deleted from the | |
715 | * FC transport class | |
0ae4d4ae RL |
716 | * |
717 | * STATUS: OPTIONAL | |
42e9a92f RL |
718 | */ |
719 | void (*disc_stop_final) (struct fc_lport *); | |
720 | }; | |
721 | ||
3a3b42bf RL |
722 | /** |
723 | * struct fc_disc - Discovery context | |
724 | * @retry_count: Number of retries | |
725 | * @pending: 1 if discovery is pending, 0 if not | |
c531b9b4 | 726 | * @requested: 1 if discovery has been requested, 0 if not |
3a3b42bf RL |
727 | * @seq_count: Number of sequences used for discovery |
728 | * @buf_len: Length of the discovery buffer | |
729 | * @disc_id: Discovery ID | |
730 | * @rports: List of discovered remote ports | |
0685230c | 731 | * @priv: Private pointer for use by discovery code |
3a3b42bf RL |
732 | * @disc_mutex: Mutex that protects the discovery context |
733 | * @partial_buf: Partial name buffer (if names are returned | |
734 | * in multiple frames) | |
735 | * @disc_work: handle for delayed work context | |
736 | * @disc_callback: Callback routine called when discovery completes | |
737 | */ | |
42e9a92f | 738 | struct fc_disc { |
3a3b42bf RL |
739 | unsigned char retry_count; |
740 | unsigned char pending; | |
741 | unsigned char requested; | |
742 | unsigned short seq_count; | |
743 | unsigned char buf_len; | |
744 | u16 disc_id; | |
745 | ||
746 | struct list_head rports; | |
0685230c | 747 | void *priv; |
3a3b42bf RL |
748 | struct mutex disc_mutex; |
749 | struct fc_gpn_ft_resp partial_buf; | |
750 | struct delayed_work disc_work; | |
42e9a92f RL |
751 | |
752 | void (*disc_callback)(struct fc_lport *, | |
753 | enum fc_disc_event); | |
42e9a92f RL |
754 | }; |
755 | ||
3a3b42bf RL |
756 | /** |
757 | * struct fc_lport - Local port | |
758 | * @host: The SCSI host associated with a local port | |
759 | * @ema_list: Exchange manager anchor list | |
760 | * @dns_rdata: The directory server remote port | |
761 | * @ptp_rdata: Point to point remote port | |
762 | * @scsi_priv: FCP layer internal data | |
763 | * @disc: Discovery context | |
764 | * @vports: Child vports if N_Port | |
765 | * @vport: Parent vport if VN_Port | |
766 | * @tt: Libfc function template | |
767 | * @link_up: Link state (1 = link up, 0 = link down) | |
768 | * @qfull: Queue state (1 queue is full, 0 queue is not full) | |
769 | * @state: Identifies the state | |
770 | * @boot_time: Timestamp indicating when the local port came online | |
771 | * @host_stats: SCSI host statistics | |
772 | * @dev_stats: FCoE device stats (TODO: libfc should not be | |
773 | * FCoE aware) | |
774 | * @retry_count: Number of retries in the current state | |
7b2787ec | 775 | * @port_id: FC Port ID |
3a3b42bf RL |
776 | * @wwpn: World Wide Port Name |
777 | * @wwnn: World Wide Node Name | |
778 | * @service_params: Common service parameters | |
779 | * @e_d_tov: Error detection timeout value | |
780 | * @r_a_tov: Resouce allocation timeout value | |
781 | * @rnid_gen: RNID information | |
782 | * @sg_supp: Indicates if scatter gather is supported | |
783 | * @seq_offload: Indicates if sequence offload is supported | |
784 | * @crc_offload: Indicates if CRC offload is supported | |
785 | * @lro_enabled: Indicates if large receive offload is supported | |
786 | * @does_npiv: Supports multiple vports | |
787 | * @npiv_enabled: Switch/fabric allows NPIV | |
788 | * @mfs: The maximum Fibre Channel payload size | |
789 | * @max_retry_count: The maximum retry attempts | |
790 | * @max_rport_retry_count: The maximum remote port retry attempts | |
f90377ab | 791 | * @rport_priv_size: Size needed by driver after struct fc_rport_priv |
3a3b42bf RL |
792 | * @lro_xid: The maximum XID for LRO |
793 | * @lso_max: The maximum large offload send size | |
794 | * @fcts: FC-4 type mask | |
795 | * @lp_mutex: Mutex to protect the local port | |
796 | * @list: Handle for list of local ports | |
797 | * @retry_work: Handle to local port for delayed retry context | |
798 | */ | |
42e9a92f | 799 | struct fc_lport { |
42e9a92f | 800 | /* Associations */ |
3a3b42bf RL |
801 | struct Scsi_Host *host; |
802 | struct list_head ema_list; | |
803 | struct fc_rport_priv *dns_rdata; | |
804 | struct fc_rport_priv *ptp_rdata; | |
805 | void *scsi_priv; | |
806 | struct fc_disc disc; | |
807 | ||
808 | /* Virtual port information */ | |
809 | struct list_head vports; | |
810 | struct fc_vport *vport; | |
42e9a92f RL |
811 | |
812 | /* Operational Information */ | |
813 | struct libfc_function_template tt; | |
3a3b42bf RL |
814 | u8 link_up; |
815 | u8 qfull; | |
816 | enum fc_lport_state state; | |
817 | unsigned long boot_time; | |
818 | struct fc_host_statistics host_stats; | |
819 | struct fcoe_dev_stats *dev_stats; | |
820 | u8 retry_count; | |
821 | ||
822 | /* Fabric information */ | |
7b2787ec | 823 | u32 port_id; |
3a3b42bf RL |
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; | |
3726f358 | 838 | u32 point_to_multipoint:1; |
3a3b42bf RL |
839 | u32 mfs; |
840 | u8 max_retry_count; | |
841 | u8 max_rport_retry_count; | |
f90377ab | 842 | u16 rport_priv_size; |
3a3b42bf RL |
843 | u16 link_speed; |
844 | u16 link_supported_speeds; | |
845 | u16 lro_xid; | |
846 | unsigned int lso_max; | |
847 | struct fc_ns_fts fcts; | |
42e9a92f RL |
848 | |
849 | /* Miscellaneous */ | |
3a3b42bf RL |
850 | struct mutex lp_mutex; |
851 | struct list_head list; | |
852 | struct delayed_work retry_work; | |
42e9a92f RL |
853 | }; |
854 | ||
96ad8464 JE |
855 | /** |
856 | * struct fc4_prov - FC-4 provider registration | |
857 | * @prli: Handler for incoming PRLI | |
858 | * @prlo: Handler for session reset | |
859 | * @recv: Handler for incoming request | |
860 | * @module: Pointer to module. May be NULL. | |
861 | */ | |
862 | struct fc4_prov { | |
863 | int (*prli)(struct fc_rport_priv *, u32 spp_len, | |
864 | const struct fc_els_spp *spp_in, | |
865 | struct fc_els_spp *spp_out); | |
866 | void (*prlo)(struct fc_rport_priv *); | |
867 | void (*recv)(struct fc_lport *, struct fc_frame *); | |
868 | struct module *module; | |
869 | }; | |
870 | ||
871 | /* | |
872 | * Register FC-4 provider with libfc. | |
873 | */ | |
874 | int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *); | |
875 | void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *); | |
876 | ||
34f42a07 | 877 | /* |
42e9a92f RL |
878 | * FC_LPORT HELPER FUNCTIONS |
879 | *****************************/ | |
3a3b42bf RL |
880 | |
881 | /** | |
882 | * fc_lport_test_ready() - Determine if a local port is in the READY state | |
883 | * @lport: The local port to test | |
884 | */ | |
885 | static inline int fc_lport_test_ready(struct fc_lport *lport) | |
42e9a92f | 886 | { |
3a3b42bf | 887 | return lport->state == LPORT_ST_READY; |
42e9a92f RL |
888 | } |
889 | ||
3a3b42bf RL |
890 | /** |
891 | * fc_set_wwnn() - Set the World Wide Node Name of a local port | |
892 | * @lport: The local port whose WWNN is to be set | |
893 | * @wwnn: The new WWNN | |
894 | */ | |
895 | static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn) | |
42e9a92f | 896 | { |
3a3b42bf | 897 | lport->wwnn = wwnn; |
42e9a92f RL |
898 | } |
899 | ||
3a3b42bf RL |
900 | /** |
901 | * fc_set_wwpn() - Set the World Wide Port Name of a local port | |
902 | * @lport: The local port whose WWPN is to be set | |
903 | * @wwnn: The new WWPN | |
904 | */ | |
905 | static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwnn) | |
42e9a92f | 906 | { |
3a3b42bf | 907 | lport->wwpn = wwnn; |
42e9a92f RL |
908 | } |
909 | ||
3a3b42bf RL |
910 | /** |
911 | * fc_lport_state_enter() - Change a local port's state | |
912 | * @lport: The local port whose state is to change | |
913 | * @state: The new state | |
914 | */ | |
915 | static inline void fc_lport_state_enter(struct fc_lport *lport, | |
42e9a92f RL |
916 | enum fc_lport_state state) |
917 | { | |
3a3b42bf RL |
918 | if (state != lport->state) |
919 | lport->retry_count = 0; | |
920 | lport->state = state; | |
42e9a92f RL |
921 | } |
922 | ||
3a3b42bf RL |
923 | /** |
924 | * fc_lport_init_stats() - Allocate per-CPU statistics for a local port | |
925 | * @lport: The local port whose statistics are to be initialized | |
926 | */ | |
927 | static inline int fc_lport_init_stats(struct fc_lport *lport) | |
582b45bc | 928 | { |
3a3b42bf RL |
929 | lport->dev_stats = alloc_percpu(struct fcoe_dev_stats); |
930 | if (!lport->dev_stats) | |
582b45bc RL |
931 | return -ENOMEM; |
932 | return 0; | |
933 | } | |
934 | ||
3a3b42bf RL |
935 | /** |
936 | * fc_lport_free_stats() - Free memory for a local port's statistics | |
937 | * @lport: The local port whose statistics are to be freed | |
938 | */ | |
939 | static inline void fc_lport_free_stats(struct fc_lport *lport) | |
582b45bc | 940 | { |
3a3b42bf | 941 | free_percpu(lport->dev_stats); |
582b45bc RL |
942 | } |
943 | ||
3a3b42bf RL |
944 | /** |
945 | * lport_priv() - Return the private data from a local port | |
946 | * @lport: The local port whose private data is to be retreived | |
947 | */ | |
948 | static inline void *lport_priv(const struct fc_lport *lport) | |
a0a25da2 | 949 | { |
3a3b42bf | 950 | return (void *)(lport + 1); |
a0a25da2 VD |
951 | } |
952 | ||
953 | /** | |
3a3b42bf RL |
954 | * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and |
955 | * LLD private data | |
956 | * @sht: The SCSI host template | |
957 | * @priv_size: Size of private data | |
a0a25da2 | 958 | * |
86221969 | 959 | * Returns: libfc lport |
a0a25da2 | 960 | */ |
86221969 | 961 | static inline struct fc_lport * |
a0a25da2 VD |
962 | libfc_host_alloc(struct scsi_host_template *sht, int priv_size) |
963 | { | |
86221969 CL |
964 | struct fc_lport *lport; |
965 | struct Scsi_Host *shost; | |
966 | ||
967 | shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size); | |
968 | if (!shost) | |
969 | return NULL; | |
970 | lport = shost_priv(shost); | |
971 | lport->host = shost; | |
972 | INIT_LIST_HEAD(&lport->ema_list); | |
174e1ebf | 973 | INIT_LIST_HEAD(&lport->vports); |
86221969 | 974 | return lport; |
a0a25da2 | 975 | } |
42e9a92f | 976 | |
34f42a07 | 977 | /* |
3a3b42bf | 978 | * FC_FCP HELPER FUNCTIONS |
42e9a92f | 979 | *****************************/ |
3a3b42bf RL |
980 | static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp) |
981 | { | |
982 | if (fsp && fsp->cmd) | |
983 | return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE; | |
984 | return false; | |
985 | } | |
42e9a92f RL |
986 | |
987 | /* | |
3a3b42bf RL |
988 | * LOCAL PORT LAYER |
989 | *****************************/ | |
990 | int fc_lport_init(struct fc_lport *); | |
991 | int fc_lport_destroy(struct fc_lport *); | |
992 | int fc_fabric_logoff(struct fc_lport *); | |
993 | int fc_fabric_login(struct fc_lport *); | |
8faecddb | 994 | void __fc_linkup(struct fc_lport *); |
42e9a92f | 995 | void fc_linkup(struct fc_lport *); |
8faecddb | 996 | void __fc_linkdown(struct fc_lport *); |
42e9a92f | 997 | void fc_linkdown(struct fc_lport *); |
3a3b42bf RL |
998 | void fc_vport_setlink(struct fc_lport *); |
999 | void fc_vports_linkchange(struct fc_lport *); | |
42e9a92f | 1000 | int fc_lport_config(struct fc_lport *); |
42e9a92f | 1001 | int fc_lport_reset(struct fc_lport *); |
3a3b42bf RL |
1002 | int fc_set_mfs(struct fc_lport *, u32 mfs); |
1003 | struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize); | |
1004 | struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id); | |
1005 | int fc_lport_bsg_request(struct fc_bsg_job *); | |
3726f358 | 1006 | void fc_lport_set_local_id(struct fc_lport *, u32 port_id); |
a51ab396 | 1007 | |
34f42a07 | 1008 | /* |
42e9a92f RL |
1009 | * REMOTE PORT LAYER |
1010 | *****************************/ | |
3a3b42bf RL |
1011 | int fc_rport_init(struct fc_lport *); |
1012 | void fc_rport_terminate_io(struct fc_rport *); | |
42e9a92f | 1013 | |
34f42a07 | 1014 | /* |
42e9a92f RL |
1015 | * DISCOVERY LAYER |
1016 | *****************************/ | |
3a3b42bf | 1017 | int fc_disc_init(struct fc_lport *); |
42e9a92f | 1018 | |
0685230c JE |
1019 | static inline struct fc_lport *fc_disc_lport(struct fc_disc *disc) |
1020 | { | |
1021 | return container_of(disc, struct fc_lport, disc); | |
1022 | } | |
1023 | ||
34f42a07 | 1024 | /* |
3a3b42bf | 1025 | * FCP LAYER |
42e9a92f | 1026 | *****************************/ |
42e9a92f | 1027 | int fc_fcp_init(struct fc_lport *); |
3a3b42bf | 1028 | void fc_fcp_destroy(struct fc_lport *); |
42e9a92f RL |
1029 | |
1030 | /* | |
3a3b42bf RL |
1031 | * SCSI INTERACTION LAYER |
1032 | *****************************/ | |
f281233d | 1033 | int fc_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); |
3a3b42bf RL |
1034 | int fc_eh_abort(struct scsi_cmnd *); |
1035 | int fc_eh_device_reset(struct scsi_cmnd *); | |
1036 | int fc_eh_host_reset(struct scsi_cmnd *); | |
1037 | int fc_slave_alloc(struct scsi_device *); | |
1038 | int fc_change_queue_depth(struct scsi_device *, int qdepth, int reason); | |
1039 | int fc_change_queue_type(struct scsi_device *, int tag_type); | |
42e9a92f | 1040 | |
34f42a07 | 1041 | /* |
42e9a92f RL |
1042 | * ELS/CT interface |
1043 | *****************************/ | |
3a3b42bf RL |
1044 | int fc_elsct_init(struct fc_lport *); |
1045 | struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did, | |
1046 | struct fc_frame *, | |
11b56188 CL |
1047 | unsigned int op, |
1048 | void (*resp)(struct fc_seq *, | |
3a3b42bf | 1049 | struct fc_frame *, |
11b56188 CL |
1050 | void *arg), |
1051 | void *arg, u32 timer_msec); | |
1052 | void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *); | |
1053 | void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *); | |
24f089e2 JE |
1054 | void fc_fill_reply_hdr(struct fc_frame *, const struct fc_frame *, |
1055 | enum fc_rctl, u32 parm_offset); | |
1056 | void fc_fill_hdr(struct fc_frame *, const struct fc_frame *, | |
1057 | enum fc_rctl, u32 f_ctl, u16 seq_cnt, u32 parm_offset); | |
42e9a92f RL |
1058 | |
1059 | ||
34f42a07 | 1060 | /* |
42e9a92f RL |
1061 | * EXCHANGE MANAGER LAYER |
1062 | *****************************/ | |
3a3b42bf RL |
1063 | int fc_exch_init(struct fc_lport *); |
1064 | struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *, | |
1065 | struct fc_exch_mgr *, | |
96316099 | 1066 | bool (*match)(struct fc_frame *)); |
3a3b42bf | 1067 | void fc_exch_mgr_del(struct fc_exch_mgr_anchor *); |
174e1ebf | 1068 | int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst); |
3a3b42bf RL |
1069 | struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class, |
1070 | u16 min_xid, u16 max_xid, | |
52ff878c | 1071 | bool (*match)(struct fc_frame *)); |
3a3b42bf RL |
1072 | void fc_exch_mgr_free(struct fc_lport *); |
1073 | void fc_exch_recv(struct fc_lport *, struct fc_frame *); | |
1f6ff364 | 1074 | void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); |
42e9a92f RL |
1075 | |
1076 | /* | |
1077 | * Functions for fc_functions_template | |
1078 | */ | |
3a3b42bf | 1079 | void fc_get_host_speed(struct Scsi_Host *); |
3a3b42bf RL |
1080 | void fc_get_host_port_state(struct Scsi_Host *); |
1081 | void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout); | |
42e9a92f RL |
1082 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *); |
1083 | ||
42e9a92f | 1084 | #endif /* _LIBFC_H_ */ |