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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> |
22c70d1a | 26 | #include <linux/refcount.h> |
42e9a92f RL |
27 | |
28 | #include <scsi/scsi_transport.h> | |
29 | #include <scsi/scsi_transport_fc.h> | |
a51ab396 | 30 | #include <scsi/scsi_bsg_fc.h> |
42e9a92f RL |
31 | |
32 | #include <scsi/fc/fc_fcp.h> | |
33 | #include <scsi/fc/fc_ns.h> | |
d78c317f | 34 | #include <scsi/fc/fc_ms.h> |
42e9a92f RL |
35 | #include <scsi/fc/fc_els.h> |
36 | #include <scsi/fc/fc_gs.h> | |
37 | ||
38 | #include <scsi/fc_frame.h> | |
39 | ||
96ad8464 JE |
40 | #define FC_FC4_PROV_SIZE (FC_TYPE_FCP + 1) /* size of tables */ |
41 | ||
42e9a92f RL |
42 | /* |
43 | * libfc error codes | |
44 | */ | |
45 | #define FC_NO_ERR 0 /* no error */ | |
46 | #define FC_EX_TIMEOUT 1 /* Exchange timeout */ | |
47 | #define FC_EX_CLOSED 2 /* Exchange closed */ | |
9f9504a7 HR |
48 | #define FC_EX_ALLOC_ERR 3 /* Exchange allocation failed */ |
49 | #define FC_EX_XMIT_ERR 4 /* Exchange transmit failed */ | |
50 | #define FC_EX_ELS_RJT 5 /* ELS rejected */ | |
51 | #define FC_EX_INV_LOGIN 6 /* Login not completed */ | |
52 | #define FC_EX_SEQ_ERR 6 /* Exchange sequence error */ | |
42e9a92f | 53 | |
3a3b42bf RL |
54 | /** |
55 | * enum fc_lport_state - Local port states | |
56 | * @LPORT_ST_DISABLED: Disabled | |
57 | * @LPORT_ST_FLOGI: Fabric login (FLOGI) sent | |
58 | * @LPORT_ST_DNS: Waiting for name server remote port to become ready | |
59 | * @LPORT_ST_RPN_ID: Register port name by ID (RPN_ID) sent | |
60 | * @LPORT_ST_RFT_ID: Register Fibre Channel types by ID (RFT_ID) sent | |
ab593b18 | 61 | * @LPORT_ST_RFF_ID: Register FC-4 Features by ID (RFF_ID) sent |
d78c317f NP |
62 | * @LPORT_ST_FDMI: Waiting for mgmt server rport to become ready |
63 | * @LPORT_ST_RHBA: | |
3a3b42bf RL |
64 | * @LPORT_ST_SCR: State Change Register (SCR) sent |
65 | * @LPORT_ST_READY: Ready for use | |
66 | * @LPORT_ST_LOGO: Local port logout (LOGO) sent | |
67 | * @LPORT_ST_RESET: Local port reset | |
42e9a92f | 68 | */ |
42e9a92f | 69 | enum fc_lport_state { |
b1d9fd55 | 70 | LPORT_ST_DISABLED = 0, |
42e9a92f RL |
71 | LPORT_ST_FLOGI, |
72 | LPORT_ST_DNS, | |
c9c7bd7a | 73 | LPORT_ST_RNN_ID, |
5baa17c3 | 74 | LPORT_ST_RSNN_NN, |
c9866a54 | 75 | LPORT_ST_RSPN_ID, |
42e9a92f | 76 | LPORT_ST_RFT_ID, |
ab593b18 | 77 | LPORT_ST_RFF_ID, |
d78c317f NP |
78 | LPORT_ST_FDMI, |
79 | LPORT_ST_RHBA, | |
80 | LPORT_ST_RPA, | |
81 | LPORT_ST_DHBA, | |
82 | LPORT_ST_DPRT, | |
42e9a92f RL |
83 | LPORT_ST_SCR, |
84 | LPORT_ST_READY, | |
85 | LPORT_ST_LOGO, | |
86 | LPORT_ST_RESET | |
87 | }; | |
88 | ||
89 | enum fc_disc_event { | |
90 | DISC_EV_NONE = 0, | |
91 | DISC_EV_SUCCESS, | |
92 | DISC_EV_FAILED | |
93 | }; | |
94 | ||
3a3b42bf RL |
95 | /** |
96 | * enum fc_rport_state - Remote port states | |
97 | * @RPORT_ST_INIT: Initialized | |
a7b12a27 JE |
98 | * @RPORT_ST_FLOGI: Waiting for FLOGI completion for point-to-multipoint |
99 | * @RPORT_ST_PLOGI_WAIT: Waiting for peer to login for point-to-multipoint | |
3a3b42bf RL |
100 | * @RPORT_ST_PLOGI: Waiting for PLOGI completion |
101 | * @RPORT_ST_PRLI: Waiting for PRLI completion | |
102 | * @RPORT_ST_RTV: Waiting for RTV completion | |
103 | * @RPORT_ST_READY: Ready for use | |
3a3b42bf RL |
104 | * @RPORT_ST_ADISC: Discover Address sent |
105 | * @RPORT_ST_DELETE: Remote port being deleted | |
3a3b42bf | 106 | */ |
42e9a92f | 107 | enum fc_rport_state { |
3a3b42bf | 108 | RPORT_ST_INIT, |
a7b12a27 JE |
109 | RPORT_ST_FLOGI, |
110 | RPORT_ST_PLOGI_WAIT, | |
3a3b42bf RL |
111 | RPORT_ST_PLOGI, |
112 | RPORT_ST_PRLI, | |
113 | RPORT_ST_RTV, | |
114 | RPORT_ST_READY, | |
3a3b42bf RL |
115 | RPORT_ST_ADISC, |
116 | RPORT_ST_DELETE, | |
42e9a92f RL |
117 | }; |
118 | ||
42e9a92f RL |
119 | /** |
120 | * struct fc_disc_port - temporary discovery port to hold rport identifiers | |
9737e6a7 RL |
121 | * @lp: Fibre Channel host port instance |
122 | * @peers: Node for list management during discovery and RSCN processing | |
123 | * @rport_work: Work struct for starting the rport state machine | |
124 | * @port_id: Port ID of the discovered port | |
42e9a92f RL |
125 | */ |
126 | struct fc_disc_port { | |
3a3b42bf RL |
127 | struct fc_lport *lp; |
128 | struct list_head peers; | |
129 | struct work_struct rport_work; | |
130 | u32 port_id; | |
42e9a92f RL |
131 | }; |
132 | ||
3a3b42bf RL |
133 | /** |
134 | * enum fc_rport_event - Remote port events | |
135 | * @RPORT_EV_NONE: No event | |
136 | * @RPORT_EV_READY: Remote port is ready for use | |
137 | * @RPORT_EV_FAILED: State machine failed, remote port is not ready | |
138 | * @RPORT_EV_STOP: Remote port has been stopped | |
139 | * @RPORT_EV_LOGO: Remote port logout (LOGO) sent | |
140 | */ | |
42e9a92f RL |
141 | enum fc_rport_event { |
142 | RPORT_EV_NONE = 0, | |
4c0f62b5 | 143 | RPORT_EV_READY, |
42e9a92f RL |
144 | RPORT_EV_FAILED, |
145 | RPORT_EV_STOP, | |
146 | RPORT_EV_LOGO | |
147 | }; | |
148 | ||
9fb9d328 JE |
149 | struct fc_rport_priv; |
150 | ||
3a3b42bf RL |
151 | /** |
152 | * struct fc_rport_operations - Operations for a remote port | |
153 | * @event_callback: Function to be called for remote port events | |
154 | */ | |
42e9a92f | 155 | struct fc_rport_operations { |
9fb9d328 | 156 | void (*event_callback)(struct fc_lport *, struct fc_rport_priv *, |
42e9a92f RL |
157 | enum fc_rport_event); |
158 | }; | |
159 | ||
160 | /** | |
161 | * struct fc_rport_libfc_priv - libfc internal information about a remote port | |
3a3b42bf RL |
162 | * @local_port: The associated local port |
163 | * @rp_state: Indicates READY for I/O or DELETE when blocked | |
164 | * @flags: REC and RETRY supported flags | |
165 | * @e_d_tov: Error detect timeout value (in msec) | |
166 | * @r_a_tov: Resource allocation timeout value (in msec) | |
9e9d0452 JE |
167 | */ |
168 | struct fc_rport_libfc_priv { | |
169 | struct fc_lport *local_port; | |
170 | enum fc_rport_state rp_state; | |
171 | u16 flags; | |
172 | #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0) | |
173 | #define FC_RP_FLAGS_RETRY (1 << 1) | |
4b2164d4 | 174 | #define FC_RP_STARTED (1 << 2) |
75a2792d | 175 | #define FC_RP_FLAGS_CONF_REQ (1 << 3) |
9e9d0452 JE |
176 | unsigned int e_d_tov; |
177 | unsigned int r_a_tov; | |
178 | }; | |
179 | ||
180 | /** | |
3a3b42bf RL |
181 | * struct fc_rport_priv - libfc remote port and discovery info |
182 | * @local_port: The associated local port | |
183 | * @rport: The FC transport remote port | |
184 | * @kref: Reference counter | |
185 | * @rp_state: Enumeration that tracks progress of PLOGI, PRLI, | |
186 | * and RTV exchanges | |
187 | * @ids: The remote port identifiers and roles | |
4b2164d4 | 188 | * @flags: STARTED, REC and RETRY_SUPPORTED flags |
3a3b42bf RL |
189 | * @max_seq: Maximum number of concurrent sequences |
190 | * @disc_id: The discovery identifier | |
191 | * @maxframe_size: The maximum frame size | |
192 | * @retries: The retry count for the current state | |
f034260d | 193 | * @major_retries: The retry count for the entire PLOGI/PRLI state machine |
3a3b42bf RL |
194 | * @e_d_tov: Error detect timeout value (in msec) |
195 | * @r_a_tov: Resource allocation timeout value (in msec) | |
196 | * @rp_mutex: The mutex that protects the remote port | |
197 | * @retry_work: Handle for retries | |
198 | * @event_callback: Callback when READY, FAILED or LOGO states complete | |
96ad8464 | 199 | * @prli_count: Count of open PRLI sessions in providers |
42e90414 | 200 | * @rcu: Structure used for freeing in an RCU-safe manner |
42e9a92f | 201 | */ |
9e9d0452 | 202 | struct fc_rport_priv { |
3a3b42bf RL |
203 | struct fc_lport *local_port; |
204 | struct fc_rport *rport; | |
205 | struct kref kref; | |
206 | enum fc_rport_state rp_state; | |
f211fa51 | 207 | struct fc_rport_identifiers ids; |
3a3b42bf RL |
208 | u16 flags; |
209 | u16 max_seq; | |
210 | u16 disc_id; | |
211 | u16 maxframe_size; | |
212 | unsigned int retries; | |
f034260d | 213 | unsigned int major_retries; |
3a3b42bf RL |
214 | unsigned int e_d_tov; |
215 | unsigned int r_a_tov; | |
216 | struct mutex rp_mutex; | |
217 | struct delayed_work retry_work; | |
218 | enum fc_rport_event event; | |
219 | struct fc_rport_operations *ops; | |
220 | struct list_head peers; | |
221 | struct work_struct event_work; | |
222 | u32 supported_classes; | |
96ad8464 | 223 | u16 prli_count; |
42e90414 | 224 | struct rcu_head rcu; |
75a2792d BPG |
225 | u16 sp_features; |
226 | u8 spp_type; | |
227 | void (*lld_event_callback)(struct fc_lport *, | |
228 | struct fc_rport_priv *, | |
229 | enum fc_rport_event); | |
42e9a92f RL |
230 | }; |
231 | ||
3a3b42bf | 232 | /** |
1bd49b48 | 233 | * struct fc_stats - fc stats structure |
3a3b42bf RL |
234 | * @SecondsSinceLastReset: Seconds since the last reset |
235 | * @TxFrames: Number of transmitted frames | |
236 | * @TxWords: Number of transmitted words | |
237 | * @RxFrames: Number of received frames | |
238 | * @RxWords: Number of received words | |
239 | * @ErrorFrames: Number of received error frames | |
240 | * @DumpedFrames: Number of dumped frames | |
0f02a665 VD |
241 | * @FcpPktAllocFails: Number of fcp packet allocation failures |
242 | * @FcpPktAborts: Number of fcp packet aborts | |
243 | * @FcpFrameAllocFails: Number of fcp frame allocation failures | |
3a3b42bf RL |
244 | * @LinkFailureCount: Number of link failures |
245 | * @LossOfSignalCount: Number for signal losses | |
246 | * @InvalidTxWordCount: Number of invalid transmitted words | |
247 | * @InvalidCRCCount: Number of invalid CRCs | |
248 | * @InputRequests: Number of input requests | |
249 | * @OutputRequests: Number of output requests | |
250 | * @ControlRequests: Number of control requests | |
5f0e385f JE |
251 | * @InputBytes: Number of received bytes |
252 | * @OutputBytes: Number of transmitted bytes | |
6580bbd0 YZ |
253 | * @VLinkFailureCount: Number of virtual link failures |
254 | * @MissDiscAdvCount: Number of missing FIP discovery advertisement | |
42e9a92f | 255 | */ |
1bd49b48 | 256 | struct fc_stats { |
42e9a92f RL |
257 | u64 SecondsSinceLastReset; |
258 | u64 TxFrames; | |
259 | u64 TxWords; | |
260 | u64 RxFrames; | |
261 | u64 RxWords; | |
262 | u64 ErrorFrames; | |
263 | u64 DumpedFrames; | |
0f02a665 VD |
264 | u64 FcpPktAllocFails; |
265 | u64 FcpPktAborts; | |
266 | u64 FcpFrameAllocFails; | |
42e9a92f RL |
267 | u64 LinkFailureCount; |
268 | u64 LossOfSignalCount; | |
269 | u64 InvalidTxWordCount; | |
270 | u64 InvalidCRCCount; | |
271 | u64 InputRequests; | |
272 | u64 OutputRequests; | |
273 | u64 ControlRequests; | |
5f0e385f JE |
274 | u64 InputBytes; |
275 | u64 OutputBytes; | |
6580bbd0 YZ |
276 | u64 VLinkFailureCount; |
277 | u64 MissDiscAdvCount; | |
42e9a92f RL |
278 | }; |
279 | ||
3a3b42bf RL |
280 | /** |
281 | * struct fc_seq_els_data - ELS data used for passing ELS specific responses | |
3a3b42bf | 282 | * @reason: The reason for rejection |
25985edc | 283 | * @explan: The explanation of the rejection |
3a3b42bf RL |
284 | * |
285 | * Mainly used by the exchange manager layer. | |
42e9a92f RL |
286 | */ |
287 | struct fc_seq_els_data { | |
42e9a92f RL |
288 | enum fc_els_rjt_reason reason; |
289 | enum fc_els_rjt_explan explan; | |
290 | }; | |
291 | ||
3a3b42bf RL |
292 | /** |
293 | * struct fc_fcp_pkt - FCP request structure (one for each scsi_cmnd request) | |
294 | * @lp: The associated local port | |
295 | * @state: The state of the I/O | |
3a3b42bf RL |
296 | * @ref_cnt: Reference count |
297 | * @scsi_pkt_lock: Lock to protect the SCSI packet (must be taken before the | |
298 | * host_lock if both are to be held at the same time) | |
299 | * @cmd: The SCSI command (set and clear with the host_lock held) | |
300 | * @list: Tracks queued commands (accessed with the host_lock held) | |
301 | * @timer: The command timer | |
302 | * @tm_done: Completion indicator | |
303 | * @wait_for_comp: Indicator to wait for completion of the I/O (in jiffies) | |
3a3b42bf RL |
304 | * @data_len: The length of the data |
305 | * @cdb_cmd: The CDB command | |
306 | * @xfer_len: The transfer length | |
307 | * @xfer_ddp: Indicates if this transfer used DDP (XID of the exchange | |
308 | * will be set here if DDP was setup) | |
309 | * @xfer_contig_end: The offset into the buffer if the buffer is contiguous | |
310 | * (Tx and Rx) | |
311 | * @max_payload: The maximum payload size (in bytes) | |
312 | * @io_status: SCSI result (upper 24 bits) | |
313 | * @cdb_status: CDB status | |
314 | * @status_code: FCP I/O status | |
315 | * @scsi_comp_flags: Completion flags (bit 3 Underrun bit 2: overrun) | |
316 | * @req_flags: Request flags (bit 0: read bit:1 write) | |
317 | * @scsi_resid: SCSI residule length | |
318 | * @rport: The remote port that the SCSI command is targeted at | |
319 | * @seq_ptr: The sequence that will carry the SCSI command | |
320 | * @recov_retry: Number of recovery retries | |
321 | * @recov_seq: The sequence for REC or SRR | |
42e9a92f RL |
322 | */ |
323 | struct fc_fcp_pkt { | |
3a3b42bf | 324 | spinlock_t scsi_pkt_lock; |
22c70d1a | 325 | refcount_t ref_cnt; |
ed26cfec VD |
326 | |
327 | /* SCSI command and data transfer information */ | |
328 | u32 data_len; | |
3a3b42bf RL |
329 | |
330 | /* SCSI I/O related information */ | |
331 | struct scsi_cmnd *cmd; | |
332 | struct list_head list; | |
333 | ||
ed26cfec VD |
334 | /* Housekeeping information */ |
335 | struct fc_lport *lp; | |
336 | u8 state; | |
3a3b42bf RL |
337 | |
338 | /* SCSI/FCP return status */ | |
3a3b42bf RL |
339 | u8 cdb_status; |
340 | u8 status_code; | |
341 | u8 scsi_comp_flags; | |
ed26cfec | 342 | u32 io_status; |
3a3b42bf RL |
343 | u32 req_flags; |
344 | u32 scsi_resid; | |
345 | ||
ed26cfec VD |
346 | /* Transport related veriables */ |
347 | size_t xfer_len; | |
348 | struct fcp_cmnd cdb_cmd; | |
349 | u32 xfer_contig_end; | |
350 | u16 max_payload; | |
351 | u16 xfer_ddp; | |
352 | ||
3a3b42bf RL |
353 | /* Associated structures */ |
354 | struct fc_rport *rport; | |
355 | struct fc_seq *seq_ptr; | |
356 | ||
ed26cfec VD |
357 | /* Timeout/error related information */ |
358 | struct timer_list timer; | |
ad3120cf HR |
359 | int wait_for_comp; |
360 | int timer_delay; | |
ed26cfec | 361 | u32 recov_retry; |
3a3b42bf | 362 | struct fc_seq *recov_seq; |
ed26cfec VD |
363 | struct completion tm_done; |
364 | } ____cacheline_aligned_in_smp; | |
42e9a92f RL |
365 | |
366 | /* | |
367 | * Structure and function definitions for managing Fibre Channel Exchanges | |
368 | * and Sequences | |
369 | * | |
370 | * fc_exch holds state for one exchange and links to its active sequence. | |
371 | * | |
372 | * fc_seq holds the state for an individual sequence. | |
373 | */ | |
374 | ||
375 | struct fc_exch_mgr; | |
96316099 | 376 | struct fc_exch_mgr_anchor; |
3a3b42bf | 377 | extern u16 fc_cpu_mask; /* cpu mask for possible cpus */ |
42e9a92f | 378 | |
3a3b42bf RL |
379 | /** |
380 | * struct fc_seq - FC sequence | |
381 | * @id: The sequence ID | |
382 | * @ssb_stat: Status flags for the sequence status block (SSB) | |
383 | * @cnt: Number of frames sent so far | |
384 | * @rec_data: FC-4 value for REC | |
42e9a92f RL |
385 | */ |
386 | struct fc_seq { | |
3a3b42bf RL |
387 | u8 id; |
388 | u16 ssb_stat; | |
389 | u16 cnt; | |
390 | u32 rec_data; | |
42e9a92f RL |
391 | }; |
392 | ||
393 | #define FC_EX_DONE (1 << 0) /* ep is completed */ | |
394 | #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */ | |
9ca1e182 | 395 | #define FC_EX_QUARANTINE (1 << 2) /* exch is quarantined */ |
42e9a92f | 396 | |
3a3b42bf RL |
397 | /** |
398 | * struct fc_exch - Fibre Channel Exchange | |
399 | * @em: Exchange manager | |
400 | * @pool: Exchange pool | |
401 | * @state: The exchange's state | |
402 | * @xid: The exchange ID | |
403 | * @ex_list: Handle used by the EM to track free exchanges | |
404 | * @ex_lock: Lock that protects the exchange | |
405 | * @ex_refcnt: Reference count | |
406 | * @timeout_work: Handle for timeout handler | |
407 | * @lp: The local port that this exchange is on | |
408 | * @oxid: Originator's exchange ID | |
409 | * @rxid: Responder's exchange ID | |
410 | * @oid: Originator's FCID | |
411 | * @sid: Source FCID | |
412 | * @did: Destination FCID | |
413 | * @esb_stat: ESB exchange status | |
414 | * @r_a_tov: Resouce allocation time out value (in msecs) | |
415 | * @seq_id: The next sequence ID to use | |
f60e12e9 | 416 | * @encaps: encapsulation information for lower-level driver |
3a3b42bf RL |
417 | * @f_ctl: F_CTL flags for the sequence |
418 | * @fh_type: The frame type | |
419 | * @class: The class of service | |
420 | * @seq: The sequence in use on this exchange | |
7030fd62 BVA |
421 | * @resp_active: Number of tasks that are concurrently executing @resp(). |
422 | * @resp_task: If @resp_active > 0, either the task executing @resp(), the | |
423 | * task that has been interrupted to execute the soft-IRQ | |
424 | * executing @resp() or NULL if more than one task is executing | |
425 | * @resp concurrently. | |
426 | * @resp_wq: Waitqueue for the tasks waiting on @resp_active. | |
3a3b42bf RL |
427 | * @resp: Callback for responses on this exchange |
428 | * @destructor: Called when destroying the exchange | |
429 | * @arg: Passed as a void pointer to the resp() callback | |
42e9a92f RL |
430 | * |
431 | * Locking notes: The ex_lock protects following items: | |
432 | * state, esb_stat, f_ctl, seq.ssb_stat | |
433 | * seq_id | |
434 | * sequence allocation | |
435 | */ | |
436 | struct fc_exch { | |
49a19889 VD |
437 | spinlock_t ex_lock; |
438 | atomic_t ex_refcnt; | |
439 | enum fc_class class; | |
3a3b42bf RL |
440 | struct fc_exch_mgr *em; |
441 | struct fc_exch_pool *pool; | |
3a3b42bf | 442 | struct list_head ex_list; |
3a3b42bf | 443 | struct fc_lport *lp; |
49a19889 VD |
444 | u32 esb_stat; |
445 | u8 state; | |
446 | u8 fh_type; | |
447 | u8 seq_id; | |
448 | u8 encaps; | |
449 | u16 xid; | |
3a3b42bf RL |
450 | u16 oxid; |
451 | u16 rxid; | |
452 | u32 oid; | |
453 | u32 sid; | |
454 | u32 did; | |
3a3b42bf | 455 | u32 r_a_tov; |
3a3b42bf | 456 | u32 f_ctl; |
49a19889 | 457 | struct fc_seq seq; |
7030fd62 BVA |
458 | int resp_active; |
459 | struct task_struct *resp_task; | |
460 | wait_queue_head_t resp_wq; | |
3a3b42bf RL |
461 | void (*resp)(struct fc_seq *, struct fc_frame *, void *); |
462 | void *arg; | |
3a3b42bf | 463 | void (*destructor)(struct fc_seq *, void *); |
49a19889 VD |
464 | struct delayed_work timeout_work; |
465 | } ____cacheline_aligned_in_smp; | |
42e9a92f RL |
466 | #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) |
467 | ||
42e9a92f | 468 | |
3a3b42bf | 469 | struct libfc_function_template { |
42e9a92f RL |
470 | /* |
471 | * Interface to send a FC frame | |
42e9a92f | 472 | * |
0ae4d4ae | 473 | * STATUS: REQUIRED |
42e9a92f | 474 | */ |
3a3b42bf | 475 | int (*frame_send)(struct fc_lport *, struct fc_frame *); |
42e9a92f RL |
476 | |
477 | /* | |
0ae4d4ae RL |
478 | * Interface to send ELS/CT frames |
479 | * | |
480 | * STATUS: OPTIONAL | |
42e9a92f | 481 | */ |
3a3b42bf RL |
482 | struct fc_seq *(*elsct_send)(struct fc_lport *, u32 did, |
483 | struct fc_frame *, unsigned int op, | |
42e9a92f | 484 | void (*resp)(struct fc_seq *, |
3a3b42bf | 485 | struct fc_frame *, void *arg), |
42e9a92f | 486 | void *arg, u32 timer_msec); |
42e9a92f | 487 | |
b277d2aa YZ |
488 | /* |
489 | * Sets up the DDP context for a given exchange id on the given | |
490 | * scatterlist if LLD supports DDP for large receive. | |
491 | * | |
492 | * STATUS: OPTIONAL | |
493 | */ | |
3a3b42bf RL |
494 | int (*ddp_setup)(struct fc_lport *, u16, struct scatterlist *, |
495 | unsigned int); | |
b277d2aa YZ |
496 | /* |
497 | * Completes the DDP transfer and returns the length of data DDPed | |
498 | * for the given exchange id. | |
499 | * | |
500 | * STATUS: OPTIONAL | |
501 | */ | |
3a3b42bf | 502 | int (*ddp_done)(struct fc_lport *, u16); |
33dc362b YZ |
503 | /* |
504 | * Sets up the DDP context for a given exchange id on the given | |
1bd49b48 | 505 | * scatterlist if LLD supports DDP for target. |
33dc362b YZ |
506 | * |
507 | * STATUS: OPTIONAL | |
508 | */ | |
509 | int (*ddp_target)(struct fc_lport *, u16, struct scatterlist *, | |
510 | unsigned int); | |
b84056bf YZ |
511 | /* |
512 | * Allow LLD to fill its own Link Error Status Block | |
513 | * | |
514 | * STATUS: OPTIONAL | |
515 | */ | |
516 | void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); | |
42e9a92f | 517 | |
42e9a92f RL |
518 | /* |
519 | * Reset an exchange manager, completing all sequences and exchanges. | |
520 | * If s_id is non-zero, reset only exchanges originating from that FID. | |
521 | * If d_id is non-zero, reset only exchanges sending to that FID. | |
0ae4d4ae RL |
522 | * |
523 | * STATUS: OPTIONAL | |
42e9a92f | 524 | */ |
3a3b42bf | 525 | void (*exch_mgr_reset)(struct fc_lport *, u32 s_id, u32 d_id); |
42e9a92f | 526 | |
093bb6a2 JE |
527 | /* |
528 | * Set the local port FC_ID. | |
529 | * | |
530 | * This may be provided by the LLD to allow it to be | |
531 | * notified when the local port is assigned a FC-ID. | |
532 | * | |
533 | * The frame, if non-NULL, is the incoming frame with the | |
534 | * FLOGI LS_ACC or FLOGI, and may contain the granted MAC | |
535 | * address for the LLD. The frame pointer may be NULL if | |
536 | * no MAC is associated with this assignment (LOGO or PLOGI). | |
537 | * | |
538 | * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid. | |
539 | * | |
540 | * Note: this is called with the local port mutex held. | |
541 | * | |
542 | * STATUS: OPTIONAL | |
543 | */ | |
544 | void (*lport_set_port_id)(struct fc_lport *, u32 port_id, | |
545 | struct fc_frame *); | |
546 | ||
75a2792d BPG |
547 | /* |
548 | * Callback routine after the remote port is logged in | |
549 | * | |
550 | * STATUS: OPTIONAL | |
551 | */ | |
552 | void (*rport_event_callback)(struct fc_lport *, | |
553 | struct fc_rport_priv *, | |
554 | enum fc_rport_event); | |
555 | ||
42e9a92f RL |
556 | /* |
557 | * Send a fcp cmd from fsp pkt. | |
558 | * Called with the SCSI host lock unlocked and irqs disabled. | |
559 | * | |
560 | * The resp handler is called when FCP_RSP received. | |
561 | * | |
0ae4d4ae | 562 | * STATUS: OPTIONAL |
42e9a92f | 563 | */ |
3a3b42bf RL |
564 | int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *, |
565 | void (*resp)(struct fc_seq *, struct fc_frame *, | |
566 | void *)); | |
42e9a92f RL |
567 | |
568 | /* | |
25985edc | 569 | * Cleanup the FCP layer, used during link down and reset |
0ae4d4ae RL |
570 | * |
571 | * STATUS: OPTIONAL | |
42e9a92f | 572 | */ |
3a3b42bf | 573 | void (*fcp_cleanup)(struct fc_lport *); |
42e9a92f RL |
574 | |
575 | /* | |
576 | * Abort all I/O on a local port | |
0ae4d4ae RL |
577 | * |
578 | * STATUS: OPTIONAL | |
42e9a92f | 579 | */ |
3a3b42bf | 580 | void (*fcp_abort_io)(struct fc_lport *); |
42e9a92f | 581 | |
0ae4d4ae RL |
582 | /* |
583 | * Receive a request for the discovery layer. | |
584 | * | |
585 | * STATUS: OPTIONAL | |
42e9a92f | 586 | */ |
92261156 | 587 | void (*disc_recv_req)(struct fc_lport *, struct fc_frame *); |
42e9a92f RL |
588 | |
589 | /* | |
590 | * Start discovery for a local port. | |
0ae4d4ae RL |
591 | * |
592 | * STATUS: OPTIONAL | |
42e9a92f RL |
593 | */ |
594 | void (*disc_start)(void (*disc_callback)(struct fc_lport *, | |
595 | enum fc_disc_event), | |
596 | struct fc_lport *); | |
597 | ||
598 | /* | |
599 | * Stop discovery for a given lport. This will remove | |
600 | * all discovered rports | |
0ae4d4ae RL |
601 | * |
602 | * STATUS: OPTIONAL | |
42e9a92f RL |
603 | */ |
604 | void (*disc_stop) (struct fc_lport *); | |
605 | ||
606 | /* | |
607 | * Stop discovery for a given lport. This will block | |
608 | * until all discovered rports are deleted from the | |
609 | * FC transport class | |
0ae4d4ae RL |
610 | * |
611 | * STATUS: OPTIONAL | |
42e9a92f RL |
612 | */ |
613 | void (*disc_stop_final) (struct fc_lport *); | |
614 | }; | |
615 | ||
3a3b42bf RL |
616 | /** |
617 | * struct fc_disc - Discovery context | |
618 | * @retry_count: Number of retries | |
619 | * @pending: 1 if discovery is pending, 0 if not | |
c531b9b4 | 620 | * @requested: 1 if discovery has been requested, 0 if not |
3a3b42bf RL |
621 | * @seq_count: Number of sequences used for discovery |
622 | * @buf_len: Length of the discovery buffer | |
623 | * @disc_id: Discovery ID | |
624 | * @rports: List of discovered remote ports | |
0685230c | 625 | * @priv: Private pointer for use by discovery code |
3a3b42bf RL |
626 | * @disc_mutex: Mutex that protects the discovery context |
627 | * @partial_buf: Partial name buffer (if names are returned | |
628 | * in multiple frames) | |
629 | * @disc_work: handle for delayed work context | |
630 | * @disc_callback: Callback routine called when discovery completes | |
631 | */ | |
42e9a92f | 632 | struct fc_disc { |
3a3b42bf RL |
633 | unsigned char retry_count; |
634 | unsigned char pending; | |
635 | unsigned char requested; | |
636 | unsigned short seq_count; | |
637 | unsigned char buf_len; | |
638 | u16 disc_id; | |
639 | ||
640 | struct list_head rports; | |
0685230c | 641 | void *priv; |
3a3b42bf RL |
642 | struct mutex disc_mutex; |
643 | struct fc_gpn_ft_resp partial_buf; | |
644 | struct delayed_work disc_work; | |
42e9a92f RL |
645 | |
646 | void (*disc_callback)(struct fc_lport *, | |
647 | enum fc_disc_event); | |
42e9a92f RL |
648 | }; |
649 | ||
70d53b04 JE |
650 | /* |
651 | * Local port notifier and events. | |
652 | */ | |
653 | extern struct blocking_notifier_head fc_lport_notifier_head; | |
654 | enum fc_lport_event { | |
655 | FC_LPORT_EV_ADD, | |
656 | FC_LPORT_EV_DEL, | |
657 | }; | |
658 | ||
3a3b42bf RL |
659 | /** |
660 | * struct fc_lport - Local port | |
661 | * @host: The SCSI host associated with a local port | |
662 | * @ema_list: Exchange manager anchor list | |
663 | * @dns_rdata: The directory server remote port | |
d78c317f | 664 | * @ms_rdata: The management server remote port |
3a3b42bf RL |
665 | * @ptp_rdata: Point to point remote port |
666 | * @scsi_priv: FCP layer internal data | |
667 | * @disc: Discovery context | |
668 | * @vports: Child vports if N_Port | |
669 | * @vport: Parent vport if VN_Port | |
670 | * @tt: Libfc function template | |
671 | * @link_up: Link state (1 = link up, 0 = link down) | |
672 | * @qfull: Queue state (1 queue is full, 0 queue is not full) | |
673 | * @state: Identifies the state | |
674 | * @boot_time: Timestamp indicating when the local port came online | |
675 | * @host_stats: SCSI host statistics | |
1bd49b48 | 676 | * @stats: FC local port stats (TODO separate libfc LLD stats) |
3a3b42bf | 677 | * @retry_count: Number of retries in the current state |
7b2787ec | 678 | * @port_id: FC Port ID |
3a3b42bf RL |
679 | * @wwpn: World Wide Port Name |
680 | * @wwnn: World Wide Node Name | |
681 | * @service_params: Common service parameters | |
682 | * @e_d_tov: Error detection timeout value | |
683 | * @r_a_tov: Resouce allocation timeout value | |
684 | * @rnid_gen: RNID information | |
685 | * @sg_supp: Indicates if scatter gather is supported | |
686 | * @seq_offload: Indicates if sequence offload is supported | |
687 | * @crc_offload: Indicates if CRC offload is supported | |
688 | * @lro_enabled: Indicates if large receive offload is supported | |
689 | * @does_npiv: Supports multiple vports | |
690 | * @npiv_enabled: Switch/fabric allows NPIV | |
691 | * @mfs: The maximum Fibre Channel payload size | |
692 | * @max_retry_count: The maximum retry attempts | |
693 | * @max_rport_retry_count: The maximum remote port retry attempts | |
f90377ab | 694 | * @rport_priv_size: Size needed by driver after struct fc_rport_priv |
3a3b42bf RL |
695 | * @lro_xid: The maximum XID for LRO |
696 | * @lso_max: The maximum large offload send size | |
697 | * @fcts: FC-4 type mask | |
698 | * @lp_mutex: Mutex to protect the local port | |
70d53b04 | 699 | * @list: Linkage on list of vport peers |
3a3b42bf | 700 | * @retry_work: Handle to local port for delayed retry context |
baf9fdf0 | 701 | * @prov: Pointers available for use by passive FC-4 providers |
70d53b04 | 702 | * @lport_list: Linkage on module-wide list of local ports |
3a3b42bf | 703 | */ |
42e9a92f | 704 | struct fc_lport { |
42e9a92f | 705 | /* Associations */ |
3a3b42bf RL |
706 | struct Scsi_Host *host; |
707 | struct list_head ema_list; | |
708 | struct fc_rport_priv *dns_rdata; | |
d78c317f | 709 | struct fc_rport_priv *ms_rdata; |
3a3b42bf RL |
710 | struct fc_rport_priv *ptp_rdata; |
711 | void *scsi_priv; | |
712 | struct fc_disc disc; | |
713 | ||
714 | /* Virtual port information */ | |
715 | struct list_head vports; | |
716 | struct fc_vport *vport; | |
42e9a92f RL |
717 | |
718 | /* Operational Information */ | |
719 | struct libfc_function_template tt; | |
3a3b42bf RL |
720 | u8 link_up; |
721 | u8 qfull; | |
9a6cf881 | 722 | u16 vlan; |
3a3b42bf RL |
723 | enum fc_lport_state state; |
724 | unsigned long boot_time; | |
725 | struct fc_host_statistics host_stats; | |
1bd49b48 | 726 | struct fc_stats __percpu *stats; |
3a3b42bf RL |
727 | u8 retry_count; |
728 | ||
729 | /* Fabric information */ | |
7b2787ec | 730 | u32 port_id; |
3a3b42bf RL |
731 | u64 wwpn; |
732 | u64 wwnn; | |
733 | unsigned int service_params; | |
734 | unsigned int e_d_tov; | |
735 | unsigned int r_a_tov; | |
736 | struct fc_els_rnid_gen rnid_gen; | |
42e9a92f RL |
737 | |
738 | /* Capabilities */ | |
3a3b42bf RL |
739 | u32 sg_supp:1; |
740 | u32 seq_offload:1; | |
741 | u32 crc_offload:1; | |
742 | u32 lro_enabled:1; | |
743 | u32 does_npiv:1; | |
744 | u32 npiv_enabled:1; | |
3726f358 | 745 | u32 point_to_multipoint:1; |
d78c317f | 746 | u32 fdmi_enabled:1; |
3a3b42bf RL |
747 | u32 mfs; |
748 | u8 max_retry_count; | |
749 | u8 max_rport_retry_count; | |
f90377ab | 750 | u16 rport_priv_size; |
3a3b42bf RL |
751 | u16 link_speed; |
752 | u16 link_supported_speeds; | |
753 | u16 lro_xid; | |
754 | unsigned int lso_max; | |
755 | struct fc_ns_fts fcts; | |
42e9a92f RL |
756 | |
757 | /* Miscellaneous */ | |
3a3b42bf RL |
758 | struct mutex lp_mutex; |
759 | struct list_head list; | |
760 | struct delayed_work retry_work; | |
baf9fdf0 | 761 | void *prov[FC_FC4_PROV_SIZE]; |
70d53b04 | 762 | struct list_head lport_list; |
42e9a92f RL |
763 | }; |
764 | ||
96ad8464 JE |
765 | /** |
766 | * struct fc4_prov - FC-4 provider registration | |
767 | * @prli: Handler for incoming PRLI | |
768 | * @prlo: Handler for session reset | |
769 | * @recv: Handler for incoming request | |
770 | * @module: Pointer to module. May be NULL. | |
771 | */ | |
772 | struct fc4_prov { | |
773 | int (*prli)(struct fc_rport_priv *, u32 spp_len, | |
774 | const struct fc_els_spp *spp_in, | |
775 | struct fc_els_spp *spp_out); | |
776 | void (*prlo)(struct fc_rport_priv *); | |
777 | void (*recv)(struct fc_lport *, struct fc_frame *); | |
778 | struct module *module; | |
779 | }; | |
780 | ||
781 | /* | |
782 | * Register FC-4 provider with libfc. | |
783 | */ | |
784 | int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *); | |
785 | void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *); | |
786 | ||
34f42a07 | 787 | /* |
42e9a92f RL |
788 | * FC_LPORT HELPER FUNCTIONS |
789 | *****************************/ | |
3a3b42bf RL |
790 | |
791 | /** | |
792 | * fc_lport_test_ready() - Determine if a local port is in the READY state | |
793 | * @lport: The local port to test | |
794 | */ | |
795 | static inline int fc_lport_test_ready(struct fc_lport *lport) | |
42e9a92f | 796 | { |
3a3b42bf | 797 | return lport->state == LPORT_ST_READY; |
42e9a92f RL |
798 | } |
799 | ||
3a3b42bf RL |
800 | /** |
801 | * fc_set_wwnn() - Set the World Wide Node Name of a local port | |
802 | * @lport: The local port whose WWNN is to be set | |
803 | * @wwnn: The new WWNN | |
804 | */ | |
805 | static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn) | |
42e9a92f | 806 | { |
3a3b42bf | 807 | lport->wwnn = wwnn; |
42e9a92f RL |
808 | } |
809 | ||
3a3b42bf RL |
810 | /** |
811 | * fc_set_wwpn() - Set the World Wide Port Name of a local port | |
812 | * @lport: The local port whose WWPN is to be set | |
67d35e70 | 813 | * @wwpn: The new WWPN |
3a3b42bf | 814 | */ |
67d35e70 | 815 | static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwpn) |
42e9a92f | 816 | { |
67d35e70 | 817 | lport->wwpn = wwpn; |
42e9a92f RL |
818 | } |
819 | ||
3a3b42bf RL |
820 | /** |
821 | * fc_lport_state_enter() - Change a local port's state | |
822 | * @lport: The local port whose state is to change | |
823 | * @state: The new state | |
824 | */ | |
825 | static inline void fc_lport_state_enter(struct fc_lport *lport, | |
42e9a92f RL |
826 | enum fc_lport_state state) |
827 | { | |
3a3b42bf RL |
828 | if (state != lport->state) |
829 | lport->retry_count = 0; | |
830 | lport->state = state; | |
42e9a92f RL |
831 | } |
832 | ||
3a3b42bf RL |
833 | /** |
834 | * fc_lport_init_stats() - Allocate per-CPU statistics for a local port | |
835 | * @lport: The local port whose statistics are to be initialized | |
836 | */ | |
837 | static inline int fc_lport_init_stats(struct fc_lport *lport) | |
582b45bc | 838 | { |
1bd49b48 VD |
839 | lport->stats = alloc_percpu(struct fc_stats); |
840 | if (!lport->stats) | |
582b45bc RL |
841 | return -ENOMEM; |
842 | return 0; | |
843 | } | |
844 | ||
3a3b42bf RL |
845 | /** |
846 | * fc_lport_free_stats() - Free memory for a local port's statistics | |
847 | * @lport: The local port whose statistics are to be freed | |
848 | */ | |
849 | static inline void fc_lport_free_stats(struct fc_lport *lport) | |
582b45bc | 850 | { |
1bd49b48 | 851 | free_percpu(lport->stats); |
582b45bc RL |
852 | } |
853 | ||
3a3b42bf RL |
854 | /** |
855 | * lport_priv() - Return the private data from a local port | |
856 | * @lport: The local port whose private data is to be retreived | |
857 | */ | |
858 | static inline void *lport_priv(const struct fc_lport *lport) | |
a0a25da2 | 859 | { |
3a3b42bf | 860 | return (void *)(lport + 1); |
a0a25da2 VD |
861 | } |
862 | ||
863 | /** | |
3a3b42bf RL |
864 | * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and |
865 | * LLD private data | |
866 | * @sht: The SCSI host template | |
867 | * @priv_size: Size of private data | |
a0a25da2 | 868 | * |
86221969 | 869 | * Returns: libfc lport |
a0a25da2 | 870 | */ |
86221969 | 871 | static inline struct fc_lport * |
a0a25da2 VD |
872 | libfc_host_alloc(struct scsi_host_template *sht, int priv_size) |
873 | { | |
86221969 CL |
874 | struct fc_lport *lport; |
875 | struct Scsi_Host *shost; | |
876 | ||
877 | shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size); | |
878 | if (!shost) | |
879 | return NULL; | |
880 | lport = shost_priv(shost); | |
881 | lport->host = shost; | |
882 | INIT_LIST_HEAD(&lport->ema_list); | |
174e1ebf | 883 | INIT_LIST_HEAD(&lport->vports); |
86221969 | 884 | return lport; |
a0a25da2 | 885 | } |
42e9a92f | 886 | |
34f42a07 | 887 | /* |
3a3b42bf | 888 | * FC_FCP HELPER FUNCTIONS |
42e9a92f | 889 | *****************************/ |
3a3b42bf RL |
890 | static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp) |
891 | { | |
892 | if (fsp && fsp->cmd) | |
893 | return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE; | |
894 | return false; | |
895 | } | |
42e9a92f RL |
896 | |
897 | /* | |
3a3b42bf RL |
898 | * LOCAL PORT LAYER |
899 | *****************************/ | |
900 | int fc_lport_init(struct fc_lport *); | |
901 | int fc_lport_destroy(struct fc_lport *); | |
902 | int fc_fabric_logoff(struct fc_lport *); | |
903 | int fc_fabric_login(struct fc_lport *); | |
8faecddb | 904 | void __fc_linkup(struct fc_lport *); |
42e9a92f | 905 | void fc_linkup(struct fc_lport *); |
8faecddb | 906 | void __fc_linkdown(struct fc_lport *); |
42e9a92f | 907 | void fc_linkdown(struct fc_lport *); |
3a3b42bf RL |
908 | void fc_vport_setlink(struct fc_lport *); |
909 | void fc_vports_linkchange(struct fc_lport *); | |
42e9a92f | 910 | int fc_lport_config(struct fc_lport *); |
42e9a92f | 911 | int fc_lport_reset(struct fc_lport *); |
c5cb444c | 912 | void fc_lport_recv(struct fc_lport *lport, struct fc_frame *fp); |
3a3b42bf RL |
913 | int fc_set_mfs(struct fc_lport *, u32 mfs); |
914 | struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize); | |
915 | struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id); | |
75cc8cfc | 916 | int fc_lport_bsg_request(struct bsg_job *); |
3726f358 | 917 | void fc_lport_set_local_id(struct fc_lport *, u32 port_id); |
70d53b04 | 918 | void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *); |
a51ab396 | 919 | |
34f42a07 | 920 | /* |
42e9a92f RL |
921 | * REMOTE PORT LAYER |
922 | *****************************/ | |
3a3b42bf | 923 | void fc_rport_terminate_io(struct fc_rport *); |
e87b7777 HR |
924 | struct fc_rport_priv *fc_rport_lookup(const struct fc_lport *lport, |
925 | u32 port_id); | |
2580064b | 926 | struct fc_rport_priv *fc_rport_create(struct fc_lport *, u32); |
944ef968 | 927 | void fc_rport_destroy(struct kref *kref); |
05d7d3b0 | 928 | int fc_rport_login(struct fc_rport_priv *rdata); |
c96c792a | 929 | int fc_rport_logoff(struct fc_rport_priv *rdata); |
e76ee65f | 930 | void fc_rport_recv_req(struct fc_lport *lport, struct fc_frame *fp); |
5922a957 | 931 | void fc_rport_flush_queue(void); |
42e9a92f | 932 | |
34f42a07 | 933 | /* |
42e9a92f RL |
934 | * DISCOVERY LAYER |
935 | *****************************/ | |
0807619d RL |
936 | void fc_disc_init(struct fc_lport *); |
937 | void fc_disc_config(struct fc_lport *, void *); | |
42e9a92f | 938 | |
0685230c JE |
939 | static inline struct fc_lport *fc_disc_lport(struct fc_disc *disc) |
940 | { | |
941 | return container_of(disc, struct fc_lport, disc); | |
942 | } | |
943 | ||
34f42a07 | 944 | /* |
3a3b42bf | 945 | * FCP LAYER |
42e9a92f | 946 | *****************************/ |
42e9a92f | 947 | int fc_fcp_init(struct fc_lport *); |
3a3b42bf | 948 | void fc_fcp_destroy(struct fc_lport *); |
42e9a92f RL |
949 | |
950 | /* | |
3a3b42bf RL |
951 | * SCSI INTERACTION LAYER |
952 | *****************************/ | |
f281233d | 953 | int fc_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); |
3a3b42bf RL |
954 | int fc_eh_abort(struct scsi_cmnd *); |
955 | int fc_eh_device_reset(struct scsi_cmnd *); | |
956 | int fc_eh_host_reset(struct scsi_cmnd *); | |
957 | int fc_slave_alloc(struct scsi_device *); | |
42e9a92f | 958 | |
34f42a07 | 959 | /* |
42e9a92f RL |
960 | * ELS/CT interface |
961 | *****************************/ | |
3a3b42bf RL |
962 | int fc_elsct_init(struct fc_lport *); |
963 | struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did, | |
964 | struct fc_frame *, | |
11b56188 CL |
965 | unsigned int op, |
966 | void (*resp)(struct fc_seq *, | |
3a3b42bf | 967 | struct fc_frame *, |
11b56188 CL |
968 | void *arg), |
969 | void *arg, u32 timer_msec); | |
970 | void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *); | |
971 | void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *); | |
24f089e2 JE |
972 | void fc_fill_reply_hdr(struct fc_frame *, const struct fc_frame *, |
973 | enum fc_rctl, u32 parm_offset); | |
974 | void fc_fill_hdr(struct fc_frame *, const struct fc_frame *, | |
975 | enum fc_rctl, u32 f_ctl, u16 seq_cnt, u32 parm_offset); | |
42e9a92f RL |
976 | |
977 | ||
34f42a07 | 978 | /* |
42e9a92f RL |
979 | * EXCHANGE MANAGER LAYER |
980 | *****************************/ | |
3a3b42bf | 981 | int fc_exch_init(struct fc_lport *); |
4e5fae7a | 982 | void fc_exch_update_stats(struct fc_lport *lport); |
3afd2d15 HR |
983 | struct fc_seq *fc_exch_seq_send(struct fc_lport *lport, |
984 | struct fc_frame *fp, | |
985 | void (*resp)(struct fc_seq *, | |
986 | struct fc_frame *fp, | |
987 | void *arg), | |
988 | void (*destructor)(struct fc_seq *, void *), | |
989 | void *arg, u32 timer_msec); | |
7ab24dd1 HR |
990 | void fc_seq_els_rsp_send(struct fc_frame *, enum fc_els_cmd, |
991 | struct fc_seq_els_data *); | |
c6865b30 | 992 | struct fc_seq *fc_seq_start_next(struct fc_seq *sp); |
f1d61e6e HR |
993 | void fc_seq_set_resp(struct fc_seq *sp, |
994 | void (*resp)(struct fc_seq *, struct fc_frame *, void *), | |
995 | void *arg); | |
96d564e2 | 996 | struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp); |
9625cc48 | 997 | void fc_seq_release(struct fc_seq *sp); |
3a3b42bf RL |
998 | struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *, |
999 | struct fc_exch_mgr *, | |
96316099 | 1000 | bool (*match)(struct fc_frame *)); |
3a3b42bf | 1001 | void fc_exch_mgr_del(struct fc_exch_mgr_anchor *); |
174e1ebf | 1002 | int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst); |
3a3b42bf RL |
1003 | struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class, |
1004 | u16 min_xid, u16 max_xid, | |
52ff878c | 1005 | bool (*match)(struct fc_frame *)); |
3a3b42bf RL |
1006 | void fc_exch_mgr_free(struct fc_lport *); |
1007 | void fc_exch_recv(struct fc_lport *, struct fc_frame *); | |
1f6ff364 | 1008 | void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); |
0cac937d | 1009 | int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, struct fc_frame *fp); |
0ebaed17 | 1010 | int fc_seq_exch_abort(const struct fc_seq *, unsigned int timer_msec); |
768c72cc | 1011 | void fc_exch_done(struct fc_seq *sp); |
42e9a92f RL |
1012 | |
1013 | /* | |
1014 | * Functions for fc_functions_template | |
1015 | */ | |
3a3b42bf | 1016 | void fc_get_host_speed(struct Scsi_Host *); |
3a3b42bf RL |
1017 | void fc_get_host_port_state(struct Scsi_Host *); |
1018 | void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout); | |
42e9a92f RL |
1019 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *); |
1020 | ||
42e9a92f | 1021 | #endif /* _LIBFC_H_ */ |