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a61127c2 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
42e9a92f RL |
2 | /* |
3 | * Copyright(c) 2007 Intel Corporation. All rights reserved. | |
4 | * | |
42e9a92f RL |
5 | * Maintained at www.Open-FCoE.org |
6 | */ | |
7 | ||
8 | #ifndef _LIBFC_H_ | |
9 | #define _LIBFC_H_ | |
10 | ||
11 | #include <linux/timer.h> | |
12 | #include <linux/if.h> | |
582b45bc | 13 | #include <linux/percpu.h> |
22c70d1a | 14 | #include <linux/refcount.h> |
42e9a92f RL |
15 | |
16 | #include <scsi/scsi_transport.h> | |
17 | #include <scsi/scsi_transport_fc.h> | |
a51ab396 | 18 | #include <scsi/scsi_bsg_fc.h> |
42e9a92f RL |
19 | |
20 | #include <scsi/fc/fc_fcp.h> | |
21 | #include <scsi/fc/fc_ns.h> | |
d78c317f | 22 | #include <scsi/fc/fc_ms.h> |
42e9a92f RL |
23 | #include <scsi/fc/fc_els.h> |
24 | #include <scsi/fc/fc_gs.h> | |
25 | ||
26 | #include <scsi/fc_frame.h> | |
27 | ||
96ad8464 JE |
28 | #define FC_FC4_PROV_SIZE (FC_TYPE_FCP + 1) /* size of tables */ |
29 | ||
42e9a92f RL |
30 | /* |
31 | * libfc error codes | |
32 | */ | |
33 | #define FC_NO_ERR 0 /* no error */ | |
34 | #define FC_EX_TIMEOUT 1 /* Exchange timeout */ | |
35 | #define FC_EX_CLOSED 2 /* Exchange closed */ | |
9f9504a7 HR |
36 | #define FC_EX_ALLOC_ERR 3 /* Exchange allocation failed */ |
37 | #define FC_EX_XMIT_ERR 4 /* Exchange transmit failed */ | |
38 | #define FC_EX_ELS_RJT 5 /* ELS rejected */ | |
39 | #define FC_EX_INV_LOGIN 6 /* Login not completed */ | |
40 | #define FC_EX_SEQ_ERR 6 /* Exchange sequence error */ | |
42e9a92f | 41 | |
3a3b42bf RL |
42 | /** |
43 | * enum fc_lport_state - Local port states | |
44 | * @LPORT_ST_DISABLED: Disabled | |
45 | * @LPORT_ST_FLOGI: Fabric login (FLOGI) sent | |
46 | * @LPORT_ST_DNS: Waiting for name server remote port to become ready | |
47 | * @LPORT_ST_RPN_ID: Register port name by ID (RPN_ID) sent | |
48 | * @LPORT_ST_RFT_ID: Register Fibre Channel types by ID (RFT_ID) sent | |
ab593b18 | 49 | * @LPORT_ST_RFF_ID: Register FC-4 Features by ID (RFF_ID) sent |
d78c317f NP |
50 | * @LPORT_ST_FDMI: Waiting for mgmt server rport to become ready |
51 | * @LPORT_ST_RHBA: | |
3a3b42bf RL |
52 | * @LPORT_ST_SCR: State Change Register (SCR) sent |
53 | * @LPORT_ST_READY: Ready for use | |
54 | * @LPORT_ST_LOGO: Local port logout (LOGO) sent | |
55 | * @LPORT_ST_RESET: Local port reset | |
42e9a92f | 56 | */ |
42e9a92f | 57 | enum fc_lport_state { |
b1d9fd55 | 58 | LPORT_ST_DISABLED = 0, |
42e9a92f RL |
59 | LPORT_ST_FLOGI, |
60 | LPORT_ST_DNS, | |
c9c7bd7a | 61 | LPORT_ST_RNN_ID, |
5baa17c3 | 62 | LPORT_ST_RSNN_NN, |
c9866a54 | 63 | LPORT_ST_RSPN_ID, |
42e9a92f | 64 | LPORT_ST_RFT_ID, |
ab593b18 | 65 | LPORT_ST_RFF_ID, |
d78c317f NP |
66 | LPORT_ST_FDMI, |
67 | LPORT_ST_RHBA, | |
68 | LPORT_ST_RPA, | |
69 | LPORT_ST_DHBA, | |
70 | LPORT_ST_DPRT, | |
42e9a92f RL |
71 | LPORT_ST_SCR, |
72 | LPORT_ST_READY, | |
73 | LPORT_ST_LOGO, | |
74 | LPORT_ST_RESET | |
75 | }; | |
76 | ||
77 | enum fc_disc_event { | |
78 | DISC_EV_NONE = 0, | |
79 | DISC_EV_SUCCESS, | |
80 | DISC_EV_FAILED | |
81 | }; | |
82 | ||
3a3b42bf RL |
83 | /** |
84 | * enum fc_rport_state - Remote port states | |
85 | * @RPORT_ST_INIT: Initialized | |
a7b12a27 JE |
86 | * @RPORT_ST_FLOGI: Waiting for FLOGI completion for point-to-multipoint |
87 | * @RPORT_ST_PLOGI_WAIT: Waiting for peer to login for point-to-multipoint | |
3a3b42bf RL |
88 | * @RPORT_ST_PLOGI: Waiting for PLOGI completion |
89 | * @RPORT_ST_PRLI: Waiting for PRLI completion | |
90 | * @RPORT_ST_RTV: Waiting for RTV completion | |
91 | * @RPORT_ST_READY: Ready for use | |
3a3b42bf RL |
92 | * @RPORT_ST_ADISC: Discover Address sent |
93 | * @RPORT_ST_DELETE: Remote port being deleted | |
3a3b42bf | 94 | */ |
42e9a92f | 95 | enum fc_rport_state { |
3a3b42bf | 96 | RPORT_ST_INIT, |
a7b12a27 JE |
97 | RPORT_ST_FLOGI, |
98 | RPORT_ST_PLOGI_WAIT, | |
3a3b42bf RL |
99 | RPORT_ST_PLOGI, |
100 | RPORT_ST_PRLI, | |
101 | RPORT_ST_RTV, | |
102 | RPORT_ST_READY, | |
3a3b42bf RL |
103 | RPORT_ST_ADISC, |
104 | RPORT_ST_DELETE, | |
42e9a92f RL |
105 | }; |
106 | ||
42e9a92f RL |
107 | /** |
108 | * struct fc_disc_port - temporary discovery port to hold rport identifiers | |
9737e6a7 RL |
109 | * @lp: Fibre Channel host port instance |
110 | * @peers: Node for list management during discovery and RSCN processing | |
111 | * @rport_work: Work struct for starting the rport state machine | |
112 | * @port_id: Port ID of the discovered port | |
42e9a92f RL |
113 | */ |
114 | struct fc_disc_port { | |
3a3b42bf RL |
115 | struct fc_lport *lp; |
116 | struct list_head peers; | |
117 | struct work_struct rport_work; | |
f3e4ff28 | 118 | u32 port_id; |
42e9a92f RL |
119 | }; |
120 | ||
3a3b42bf RL |
121 | /** |
122 | * enum fc_rport_event - Remote port events | |
123 | * @RPORT_EV_NONE: No event | |
124 | * @RPORT_EV_READY: Remote port is ready for use | |
125 | * @RPORT_EV_FAILED: State machine failed, remote port is not ready | |
126 | * @RPORT_EV_STOP: Remote port has been stopped | |
127 | * @RPORT_EV_LOGO: Remote port logout (LOGO) sent | |
128 | */ | |
42e9a92f RL |
129 | enum fc_rport_event { |
130 | RPORT_EV_NONE = 0, | |
4c0f62b5 | 131 | RPORT_EV_READY, |
42e9a92f RL |
132 | RPORT_EV_FAILED, |
133 | RPORT_EV_STOP, | |
134 | RPORT_EV_LOGO | |
135 | }; | |
136 | ||
9fb9d328 JE |
137 | struct fc_rport_priv; |
138 | ||
3a3b42bf RL |
139 | /** |
140 | * struct fc_rport_operations - Operations for a remote port | |
141 | * @event_callback: Function to be called for remote port events | |
142 | */ | |
42e9a92f | 143 | struct fc_rport_operations { |
9fb9d328 | 144 | void (*event_callback)(struct fc_lport *, struct fc_rport_priv *, |
42e9a92f RL |
145 | enum fc_rport_event); |
146 | }; | |
147 | ||
148 | /** | |
149 | * struct fc_rport_libfc_priv - libfc internal information about a remote port | |
3a3b42bf RL |
150 | * @local_port: The associated local port |
151 | * @rp_state: Indicates READY for I/O or DELETE when blocked | |
152 | * @flags: REC and RETRY supported flags | |
153 | * @e_d_tov: Error detect timeout value (in msec) | |
154 | * @r_a_tov: Resource allocation timeout value (in msec) | |
9e9d0452 JE |
155 | */ |
156 | struct fc_rport_libfc_priv { | |
157 | struct fc_lport *local_port; | |
f3e4ff28 | 158 | enum fc_rport_state rp_state; |
9e9d0452 JE |
159 | u16 flags; |
160 | #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0) | |
161 | #define FC_RP_FLAGS_RETRY (1 << 1) | |
4b2164d4 | 162 | #define FC_RP_STARTED (1 << 2) |
75a2792d | 163 | #define FC_RP_FLAGS_CONF_REQ (1 << 3) |
f3e4ff28 HR |
164 | unsigned int e_d_tov; |
165 | unsigned int r_a_tov; | |
9e9d0452 JE |
166 | }; |
167 | ||
168 | /** | |
3a3b42bf RL |
169 | * struct fc_rport_priv - libfc remote port and discovery info |
170 | * @local_port: The associated local port | |
171 | * @rport: The FC transport remote port | |
172 | * @kref: Reference counter | |
173 | * @rp_state: Enumeration that tracks progress of PLOGI, PRLI, | |
174 | * and RTV exchanges | |
175 | * @ids: The remote port identifiers and roles | |
4b2164d4 | 176 | * @flags: STARTED, REC and RETRY_SUPPORTED flags |
3a3b42bf RL |
177 | * @max_seq: Maximum number of concurrent sequences |
178 | * @disc_id: The discovery identifier | |
179 | * @maxframe_size: The maximum frame size | |
180 | * @retries: The retry count for the current state | |
f034260d | 181 | * @major_retries: The retry count for the entire PLOGI/PRLI state machine |
3a3b42bf RL |
182 | * @e_d_tov: Error detect timeout value (in msec) |
183 | * @r_a_tov: Resource allocation timeout value (in msec) | |
184 | * @rp_mutex: The mutex that protects the remote port | |
185 | * @retry_work: Handle for retries | |
186 | * @event_callback: Callback when READY, FAILED or LOGO states complete | |
96ad8464 | 187 | * @prli_count: Count of open PRLI sessions in providers |
42e90414 | 188 | * @rcu: Structure used for freeing in an RCU-safe manner |
42e9a92f | 189 | */ |
9e9d0452 | 190 | struct fc_rport_priv { |
3a3b42bf RL |
191 | struct fc_lport *local_port; |
192 | struct fc_rport *rport; | |
193 | struct kref kref; | |
f3e4ff28 | 194 | enum fc_rport_state rp_state; |
f211fa51 | 195 | struct fc_rport_identifiers ids; |
3a3b42bf | 196 | u16 flags; |
f3e4ff28 | 197 | u16 max_seq; |
3a3b42bf RL |
198 | u16 disc_id; |
199 | u16 maxframe_size; | |
f3e4ff28 HR |
200 | unsigned int retries; |
201 | unsigned int major_retries; | |
202 | unsigned int e_d_tov; | |
203 | unsigned int r_a_tov; | |
204 | struct mutex rp_mutex; | |
3a3b42bf | 205 | struct delayed_work retry_work; |
f3e4ff28 | 206 | enum fc_rport_event event; |
3a3b42bf | 207 | struct fc_rport_operations *ops; |
f3e4ff28 HR |
208 | struct list_head peers; |
209 | struct work_struct event_work; | |
3a3b42bf | 210 | u32 supported_classes; |
f3e4ff28 | 211 | u16 prli_count; |
42e90414 | 212 | struct rcu_head rcu; |
75a2792d BPG |
213 | u16 sp_features; |
214 | u8 spp_type; | |
215 | void (*lld_event_callback)(struct fc_lport *, | |
216 | struct fc_rport_priv *, | |
217 | enum fc_rport_event); | |
42e9a92f RL |
218 | }; |
219 | ||
3a3b42bf | 220 | /** |
1bd49b48 | 221 | * struct fc_stats - fc stats structure |
3a3b42bf RL |
222 | * @SecondsSinceLastReset: Seconds since the last reset |
223 | * @TxFrames: Number of transmitted frames | |
224 | * @TxWords: Number of transmitted words | |
225 | * @RxFrames: Number of received frames | |
226 | * @RxWords: Number of received words | |
227 | * @ErrorFrames: Number of received error frames | |
228 | * @DumpedFrames: Number of dumped frames | |
0f02a665 VD |
229 | * @FcpPktAllocFails: Number of fcp packet allocation failures |
230 | * @FcpPktAborts: Number of fcp packet aborts | |
231 | * @FcpFrameAllocFails: Number of fcp frame allocation failures | |
3a3b42bf RL |
232 | * @LinkFailureCount: Number of link failures |
233 | * @LossOfSignalCount: Number for signal losses | |
234 | * @InvalidTxWordCount: Number of invalid transmitted words | |
235 | * @InvalidCRCCount: Number of invalid CRCs | |
236 | * @InputRequests: Number of input requests | |
237 | * @OutputRequests: Number of output requests | |
238 | * @ControlRequests: Number of control requests | |
5f0e385f JE |
239 | * @InputBytes: Number of received bytes |
240 | * @OutputBytes: Number of transmitted bytes | |
6580bbd0 YZ |
241 | * @VLinkFailureCount: Number of virtual link failures |
242 | * @MissDiscAdvCount: Number of missing FIP discovery advertisement | |
42e9a92f | 243 | */ |
1bd49b48 | 244 | struct fc_stats { |
42e9a92f RL |
245 | u64 SecondsSinceLastReset; |
246 | u64 TxFrames; | |
247 | u64 TxWords; | |
248 | u64 RxFrames; | |
249 | u64 RxWords; | |
250 | u64 ErrorFrames; | |
251 | u64 DumpedFrames; | |
0f02a665 VD |
252 | u64 FcpPktAllocFails; |
253 | u64 FcpPktAborts; | |
254 | u64 FcpFrameAllocFails; | |
42e9a92f RL |
255 | u64 LinkFailureCount; |
256 | u64 LossOfSignalCount; | |
257 | u64 InvalidTxWordCount; | |
258 | u64 InvalidCRCCount; | |
259 | u64 InputRequests; | |
260 | u64 OutputRequests; | |
261 | u64 ControlRequests; | |
5f0e385f JE |
262 | u64 InputBytes; |
263 | u64 OutputBytes; | |
6580bbd0 YZ |
264 | u64 VLinkFailureCount; |
265 | u64 MissDiscAdvCount; | |
42e9a92f RL |
266 | }; |
267 | ||
3a3b42bf RL |
268 | /** |
269 | * struct fc_seq_els_data - ELS data used for passing ELS specific responses | |
3a3b42bf | 270 | * @reason: The reason for rejection |
25985edc | 271 | * @explan: The explanation of the rejection |
3a3b42bf RL |
272 | * |
273 | * Mainly used by the exchange manager layer. | |
42e9a92f RL |
274 | */ |
275 | struct fc_seq_els_data { | |
42e9a92f RL |
276 | enum fc_els_rjt_reason reason; |
277 | enum fc_els_rjt_explan explan; | |
278 | }; | |
279 | ||
3a3b42bf RL |
280 | /** |
281 | * struct fc_fcp_pkt - FCP request structure (one for each scsi_cmnd request) | |
282 | * @lp: The associated local port | |
283 | * @state: The state of the I/O | |
3a3b42bf RL |
284 | * @ref_cnt: Reference count |
285 | * @scsi_pkt_lock: Lock to protect the SCSI packet (must be taken before the | |
286 | * host_lock if both are to be held at the same time) | |
287 | * @cmd: The SCSI command (set and clear with the host_lock held) | |
288 | * @list: Tracks queued commands (accessed with the host_lock held) | |
289 | * @timer: The command timer | |
290 | * @tm_done: Completion indicator | |
291 | * @wait_for_comp: Indicator to wait for completion of the I/O (in jiffies) | |
3a3b42bf RL |
292 | * @data_len: The length of the data |
293 | * @cdb_cmd: The CDB command | |
294 | * @xfer_len: The transfer length | |
295 | * @xfer_ddp: Indicates if this transfer used DDP (XID of the exchange | |
296 | * will be set here if DDP was setup) | |
297 | * @xfer_contig_end: The offset into the buffer if the buffer is contiguous | |
298 | * (Tx and Rx) | |
299 | * @max_payload: The maximum payload size (in bytes) | |
300 | * @io_status: SCSI result (upper 24 bits) | |
301 | * @cdb_status: CDB status | |
302 | * @status_code: FCP I/O status | |
303 | * @scsi_comp_flags: Completion flags (bit 3 Underrun bit 2: overrun) | |
304 | * @req_flags: Request flags (bit 0: read bit:1 write) | |
305 | * @scsi_resid: SCSI residule length | |
306 | * @rport: The remote port that the SCSI command is targeted at | |
307 | * @seq_ptr: The sequence that will carry the SCSI command | |
308 | * @recov_retry: Number of recovery retries | |
309 | * @recov_seq: The sequence for REC or SRR | |
42e9a92f RL |
310 | */ |
311 | struct fc_fcp_pkt { | |
3a3b42bf | 312 | spinlock_t scsi_pkt_lock; |
22c70d1a | 313 | refcount_t ref_cnt; |
ed26cfec VD |
314 | |
315 | /* SCSI command and data transfer information */ | |
316 | u32 data_len; | |
3a3b42bf RL |
317 | |
318 | /* SCSI I/O related information */ | |
319 | struct scsi_cmnd *cmd; | |
320 | struct list_head list; | |
321 | ||
ed26cfec VD |
322 | /* Housekeeping information */ |
323 | struct fc_lport *lp; | |
324 | u8 state; | |
3a3b42bf RL |
325 | |
326 | /* SCSI/FCP return status */ | |
3a3b42bf RL |
327 | u8 cdb_status; |
328 | u8 status_code; | |
329 | u8 scsi_comp_flags; | |
ed26cfec | 330 | u32 io_status; |
3a3b42bf RL |
331 | u32 req_flags; |
332 | u32 scsi_resid; | |
333 | ||
ed26cfec VD |
334 | /* Transport related veriables */ |
335 | size_t xfer_len; | |
336 | struct fcp_cmnd cdb_cmd; | |
337 | u32 xfer_contig_end; | |
338 | u16 max_payload; | |
339 | u16 xfer_ddp; | |
340 | ||
3a3b42bf RL |
341 | /* Associated structures */ |
342 | struct fc_rport *rport; | |
343 | struct fc_seq *seq_ptr; | |
344 | ||
ed26cfec VD |
345 | /* Timeout/error related information */ |
346 | struct timer_list timer; | |
ad3120cf HR |
347 | int wait_for_comp; |
348 | int timer_delay; | |
ed26cfec | 349 | u32 recov_retry; |
3a3b42bf | 350 | struct fc_seq *recov_seq; |
ed26cfec VD |
351 | struct completion tm_done; |
352 | } ____cacheline_aligned_in_smp; | |
42e9a92f | 353 | |
5d21aa36 BVA |
354 | /* |
355 | * @fsp should be tested and set under the scsi_pkt_queue lock | |
356 | */ | |
357 | struct libfc_cmd_priv { | |
358 | struct fc_fcp_pkt *fsp; | |
359 | u32 resid_len; | |
360 | u8 status; | |
361 | }; | |
362 | ||
42e9a92f RL |
363 | /* |
364 | * Structure and function definitions for managing Fibre Channel Exchanges | |
365 | * and Sequences | |
366 | * | |
367 | * fc_exch holds state for one exchange and links to its active sequence. | |
368 | * | |
369 | * fc_seq holds the state for an individual sequence. | |
370 | */ | |
371 | ||
372 | struct fc_exch_mgr; | |
96316099 | 373 | struct fc_exch_mgr_anchor; |
3a3b42bf | 374 | extern u16 fc_cpu_mask; /* cpu mask for possible cpus */ |
42e9a92f | 375 | |
3a3b42bf RL |
376 | /** |
377 | * struct fc_seq - FC sequence | |
378 | * @id: The sequence ID | |
379 | * @ssb_stat: Status flags for the sequence status block (SSB) | |
380 | * @cnt: Number of frames sent so far | |
381 | * @rec_data: FC-4 value for REC | |
42e9a92f RL |
382 | */ |
383 | struct fc_seq { | |
3a3b42bf RL |
384 | u8 id; |
385 | u16 ssb_stat; | |
386 | u16 cnt; | |
387 | u32 rec_data; | |
42e9a92f RL |
388 | }; |
389 | ||
390 | #define FC_EX_DONE (1 << 0) /* ep is completed */ | |
391 | #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */ | |
9ca1e182 | 392 | #define FC_EX_QUARANTINE (1 << 2) /* exch is quarantined */ |
42e9a92f | 393 | |
3a3b42bf RL |
394 | /** |
395 | * struct fc_exch - Fibre Channel Exchange | |
396 | * @em: Exchange manager | |
397 | * @pool: Exchange pool | |
398 | * @state: The exchange's state | |
399 | * @xid: The exchange ID | |
400 | * @ex_list: Handle used by the EM to track free exchanges | |
401 | * @ex_lock: Lock that protects the exchange | |
402 | * @ex_refcnt: Reference count | |
403 | * @timeout_work: Handle for timeout handler | |
404 | * @lp: The local port that this exchange is on | |
405 | * @oxid: Originator's exchange ID | |
406 | * @rxid: Responder's exchange ID | |
407 | * @oid: Originator's FCID | |
408 | * @sid: Source FCID | |
409 | * @did: Destination FCID | |
410 | * @esb_stat: ESB exchange status | |
40d6b939 | 411 | * @r_a_tov: Resource allocation time out value (in msecs) |
3a3b42bf | 412 | * @seq_id: The next sequence ID to use |
f60e12e9 | 413 | * @encaps: encapsulation information for lower-level driver |
3a3b42bf RL |
414 | * @f_ctl: F_CTL flags for the sequence |
415 | * @fh_type: The frame type | |
416 | * @class: The class of service | |
417 | * @seq: The sequence in use on this exchange | |
7030fd62 BVA |
418 | * @resp_active: Number of tasks that are concurrently executing @resp(). |
419 | * @resp_task: If @resp_active > 0, either the task executing @resp(), the | |
420 | * task that has been interrupted to execute the soft-IRQ | |
421 | * executing @resp() or NULL if more than one task is executing | |
422 | * @resp concurrently. | |
423 | * @resp_wq: Waitqueue for the tasks waiting on @resp_active. | |
3a3b42bf RL |
424 | * @resp: Callback for responses on this exchange |
425 | * @destructor: Called when destroying the exchange | |
426 | * @arg: Passed as a void pointer to the resp() callback | |
42e9a92f RL |
427 | * |
428 | * Locking notes: The ex_lock protects following items: | |
429 | * state, esb_stat, f_ctl, seq.ssb_stat | |
430 | * seq_id | |
431 | * sequence allocation | |
432 | */ | |
433 | struct fc_exch { | |
49a19889 VD |
434 | spinlock_t ex_lock; |
435 | atomic_t ex_refcnt; | |
436 | enum fc_class class; | |
3a3b42bf RL |
437 | struct fc_exch_mgr *em; |
438 | struct fc_exch_pool *pool; | |
3a3b42bf | 439 | struct list_head ex_list; |
3a3b42bf | 440 | struct fc_lport *lp; |
49a19889 VD |
441 | u32 esb_stat; |
442 | u8 state; | |
443 | u8 fh_type; | |
444 | u8 seq_id; | |
445 | u8 encaps; | |
446 | u16 xid; | |
3a3b42bf RL |
447 | u16 oxid; |
448 | u16 rxid; | |
449 | u32 oid; | |
450 | u32 sid; | |
451 | u32 did; | |
3a3b42bf | 452 | u32 r_a_tov; |
3a3b42bf | 453 | u32 f_ctl; |
49a19889 | 454 | struct fc_seq seq; |
7030fd62 BVA |
455 | int resp_active; |
456 | struct task_struct *resp_task; | |
457 | wait_queue_head_t resp_wq; | |
3a3b42bf RL |
458 | void (*resp)(struct fc_seq *, struct fc_frame *, void *); |
459 | void *arg; | |
3a3b42bf | 460 | void (*destructor)(struct fc_seq *, void *); |
49a19889 VD |
461 | struct delayed_work timeout_work; |
462 | } ____cacheline_aligned_in_smp; | |
42e9a92f RL |
463 | #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) |
464 | ||
42e9a92f | 465 | |
3a3b42bf | 466 | struct libfc_function_template { |
42e9a92f RL |
467 | /* |
468 | * Interface to send a FC frame | |
42e9a92f | 469 | * |
0ae4d4ae | 470 | * STATUS: REQUIRED |
42e9a92f | 471 | */ |
3a3b42bf | 472 | int (*frame_send)(struct fc_lport *, struct fc_frame *); |
42e9a92f RL |
473 | |
474 | /* | |
0ae4d4ae RL |
475 | * Interface to send ELS/CT frames |
476 | * | |
477 | * STATUS: OPTIONAL | |
42e9a92f | 478 | */ |
3a3b42bf RL |
479 | struct fc_seq *(*elsct_send)(struct fc_lport *, u32 did, |
480 | struct fc_frame *, unsigned int op, | |
42e9a92f | 481 | void (*resp)(struct fc_seq *, |
3a3b42bf | 482 | struct fc_frame *, void *arg), |
42e9a92f | 483 | void *arg, u32 timer_msec); |
42e9a92f | 484 | |
b277d2aa YZ |
485 | /* |
486 | * Sets up the DDP context for a given exchange id on the given | |
487 | * scatterlist if LLD supports DDP for large receive. | |
488 | * | |
489 | * STATUS: OPTIONAL | |
490 | */ | |
3a3b42bf RL |
491 | int (*ddp_setup)(struct fc_lport *, u16, struct scatterlist *, |
492 | unsigned int); | |
b277d2aa YZ |
493 | /* |
494 | * Completes the DDP transfer and returns the length of data DDPed | |
495 | * for the given exchange id. | |
496 | * | |
497 | * STATUS: OPTIONAL | |
498 | */ | |
3a3b42bf | 499 | int (*ddp_done)(struct fc_lport *, u16); |
33dc362b YZ |
500 | /* |
501 | * Sets up the DDP context for a given exchange id on the given | |
1bd49b48 | 502 | * scatterlist if LLD supports DDP for target. |
33dc362b YZ |
503 | * |
504 | * STATUS: OPTIONAL | |
505 | */ | |
506 | int (*ddp_target)(struct fc_lport *, u16, struct scatterlist *, | |
507 | unsigned int); | |
b84056bf YZ |
508 | /* |
509 | * Allow LLD to fill its own Link Error Status Block | |
510 | * | |
511 | * STATUS: OPTIONAL | |
512 | */ | |
513 | void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); | |
42e9a92f | 514 | |
42e9a92f RL |
515 | /* |
516 | * Reset an exchange manager, completing all sequences and exchanges. | |
517 | * If s_id is non-zero, reset only exchanges originating from that FID. | |
518 | * If d_id is non-zero, reset only exchanges sending to that FID. | |
0ae4d4ae RL |
519 | * |
520 | * STATUS: OPTIONAL | |
42e9a92f | 521 | */ |
3a3b42bf | 522 | void (*exch_mgr_reset)(struct fc_lport *, u32 s_id, u32 d_id); |
42e9a92f | 523 | |
093bb6a2 JE |
524 | /* |
525 | * Set the local port FC_ID. | |
526 | * | |
527 | * This may be provided by the LLD to allow it to be | |
528 | * notified when the local port is assigned a FC-ID. | |
529 | * | |
530 | * The frame, if non-NULL, is the incoming frame with the | |
531 | * FLOGI LS_ACC or FLOGI, and may contain the granted MAC | |
532 | * address for the LLD. The frame pointer may be NULL if | |
533 | * no MAC is associated with this assignment (LOGO or PLOGI). | |
534 | * | |
535 | * If FC_ID is non-zero, r_a_tov and e_d_tov must be valid. | |
536 | * | |
537 | * Note: this is called with the local port mutex held. | |
538 | * | |
539 | * STATUS: OPTIONAL | |
540 | */ | |
541 | void (*lport_set_port_id)(struct fc_lport *, u32 port_id, | |
542 | struct fc_frame *); | |
543 | ||
75a2792d BPG |
544 | /* |
545 | * Callback routine after the remote port is logged in | |
546 | * | |
547 | * STATUS: OPTIONAL | |
548 | */ | |
549 | void (*rport_event_callback)(struct fc_lport *, | |
550 | struct fc_rport_priv *, | |
551 | enum fc_rport_event); | |
552 | ||
42e9a92f RL |
553 | /* |
554 | * Send a fcp cmd from fsp pkt. | |
555 | * Called with the SCSI host lock unlocked and irqs disabled. | |
556 | * | |
557 | * The resp handler is called when FCP_RSP received. | |
558 | * | |
0ae4d4ae | 559 | * STATUS: OPTIONAL |
42e9a92f | 560 | */ |
3a3b42bf RL |
561 | int (*fcp_cmd_send)(struct fc_lport *, struct fc_fcp_pkt *, |
562 | void (*resp)(struct fc_seq *, struct fc_frame *, | |
563 | void *)); | |
42e9a92f RL |
564 | |
565 | /* | |
25985edc | 566 | * Cleanup the FCP layer, used during link down and reset |
0ae4d4ae RL |
567 | * |
568 | * STATUS: OPTIONAL | |
42e9a92f | 569 | */ |
3a3b42bf | 570 | void (*fcp_cleanup)(struct fc_lport *); |
42e9a92f RL |
571 | |
572 | /* | |
573 | * Abort all I/O on a local port | |
0ae4d4ae RL |
574 | * |
575 | * STATUS: OPTIONAL | |
42e9a92f | 576 | */ |
3a3b42bf | 577 | void (*fcp_abort_io)(struct fc_lport *); |
42e9a92f | 578 | |
0ae4d4ae RL |
579 | /* |
580 | * Receive a request for the discovery layer. | |
581 | * | |
582 | * STATUS: OPTIONAL | |
42e9a92f | 583 | */ |
92261156 | 584 | void (*disc_recv_req)(struct fc_lport *, struct fc_frame *); |
42e9a92f RL |
585 | |
586 | /* | |
587 | * Start discovery for a local port. | |
0ae4d4ae RL |
588 | * |
589 | * STATUS: OPTIONAL | |
42e9a92f RL |
590 | */ |
591 | void (*disc_start)(void (*disc_callback)(struct fc_lport *, | |
592 | enum fc_disc_event), | |
593 | struct fc_lport *); | |
594 | ||
595 | /* | |
596 | * Stop discovery for a given lport. This will remove | |
597 | * all discovered rports | |
0ae4d4ae RL |
598 | * |
599 | * STATUS: OPTIONAL | |
42e9a92f RL |
600 | */ |
601 | void (*disc_stop) (struct fc_lport *); | |
602 | ||
603 | /* | |
604 | * Stop discovery for a given lport. This will block | |
605 | * until all discovered rports are deleted from the | |
606 | * FC transport class | |
0ae4d4ae RL |
607 | * |
608 | * STATUS: OPTIONAL | |
42e9a92f RL |
609 | */ |
610 | void (*disc_stop_final) (struct fc_lport *); | |
611 | }; | |
612 | ||
3a3b42bf RL |
613 | /** |
614 | * struct fc_disc - Discovery context | |
615 | * @retry_count: Number of retries | |
616 | * @pending: 1 if discovery is pending, 0 if not | |
c531b9b4 | 617 | * @requested: 1 if discovery has been requested, 0 if not |
3a3b42bf RL |
618 | * @seq_count: Number of sequences used for discovery |
619 | * @buf_len: Length of the discovery buffer | |
620 | * @disc_id: Discovery ID | |
621 | * @rports: List of discovered remote ports | |
0685230c | 622 | * @priv: Private pointer for use by discovery code |
3a3b42bf RL |
623 | * @disc_mutex: Mutex that protects the discovery context |
624 | * @partial_buf: Partial name buffer (if names are returned | |
625 | * in multiple frames) | |
626 | * @disc_work: handle for delayed work context | |
627 | * @disc_callback: Callback routine called when discovery completes | |
628 | */ | |
42e9a92f | 629 | struct fc_disc { |
f3e4ff28 HR |
630 | unsigned char retry_count; |
631 | unsigned char pending; | |
632 | unsigned char requested; | |
633 | unsigned short seq_count; | |
634 | unsigned char buf_len; | |
635 | u16 disc_id; | |
3a3b42bf RL |
636 | |
637 | struct list_head rports; | |
0685230c | 638 | void *priv; |
3a3b42bf RL |
639 | struct mutex disc_mutex; |
640 | struct fc_gpn_ft_resp partial_buf; | |
641 | struct delayed_work disc_work; | |
42e9a92f RL |
642 | |
643 | void (*disc_callback)(struct fc_lport *, | |
644 | enum fc_disc_event); | |
42e9a92f RL |
645 | }; |
646 | ||
70d53b04 JE |
647 | /* |
648 | * Local port notifier and events. | |
649 | */ | |
650 | extern struct blocking_notifier_head fc_lport_notifier_head; | |
651 | enum fc_lport_event { | |
652 | FC_LPORT_EV_ADD, | |
653 | FC_LPORT_EV_DEL, | |
654 | }; | |
655 | ||
3a3b42bf RL |
656 | /** |
657 | * struct fc_lport - Local port | |
658 | * @host: The SCSI host associated with a local port | |
659 | * @ema_list: Exchange manager anchor list | |
660 | * @dns_rdata: The directory server remote port | |
d78c317f | 661 | * @ms_rdata: The management server remote port |
3a3b42bf RL |
662 | * @ptp_rdata: Point to point remote port |
663 | * @scsi_priv: FCP layer internal data | |
664 | * @disc: Discovery context | |
665 | * @vports: Child vports if N_Port | |
666 | * @vport: Parent vport if VN_Port | |
667 | * @tt: Libfc function template | |
668 | * @link_up: Link state (1 = link up, 0 = link down) | |
669 | * @qfull: Queue state (1 queue is full, 0 queue is not full) | |
670 | * @state: Identifies the state | |
671 | * @boot_time: Timestamp indicating when the local port came online | |
672 | * @host_stats: SCSI host statistics | |
1bd49b48 | 673 | * @stats: FC local port stats (TODO separate libfc LLD stats) |
3a3b42bf | 674 | * @retry_count: Number of retries in the current state |
7b2787ec | 675 | * @port_id: FC Port ID |
3a3b42bf RL |
676 | * @wwpn: World Wide Port Name |
677 | * @wwnn: World Wide Node Name | |
678 | * @service_params: Common service parameters | |
679 | * @e_d_tov: Error detection timeout value | |
40d6b939 | 680 | * @r_a_tov: Resource allocation timeout value |
3a3b42bf RL |
681 | * @rnid_gen: RNID information |
682 | * @sg_supp: Indicates if scatter gather is supported | |
683 | * @seq_offload: Indicates if sequence offload is supported | |
684 | * @crc_offload: Indicates if CRC offload is supported | |
685 | * @lro_enabled: Indicates if large receive offload is supported | |
686 | * @does_npiv: Supports multiple vports | |
687 | * @npiv_enabled: Switch/fabric allows NPIV | |
688 | * @mfs: The maximum Fibre Channel payload size | |
689 | * @max_retry_count: The maximum retry attempts | |
690 | * @max_rport_retry_count: The maximum remote port retry attempts | |
f90377ab | 691 | * @rport_priv_size: Size needed by driver after struct fc_rport_priv |
3a3b42bf RL |
692 | * @lro_xid: The maximum XID for LRO |
693 | * @lso_max: The maximum large offload send size | |
694 | * @fcts: FC-4 type mask | |
695 | * @lp_mutex: Mutex to protect the local port | |
70d53b04 | 696 | * @list: Linkage on list of vport peers |
3a3b42bf | 697 | * @retry_work: Handle to local port for delayed retry context |
baf9fdf0 | 698 | * @prov: Pointers available for use by passive FC-4 providers |
70d53b04 | 699 | * @lport_list: Linkage on module-wide list of local ports |
3a3b42bf | 700 | */ |
42e9a92f | 701 | struct fc_lport { |
42e9a92f | 702 | /* Associations */ |
3a3b42bf RL |
703 | struct Scsi_Host *host; |
704 | struct list_head ema_list; | |
705 | struct fc_rport_priv *dns_rdata; | |
d78c317f | 706 | struct fc_rport_priv *ms_rdata; |
3a3b42bf RL |
707 | struct fc_rport_priv *ptp_rdata; |
708 | void *scsi_priv; | |
f3e4ff28 | 709 | struct fc_disc disc; |
3a3b42bf RL |
710 | |
711 | /* Virtual port information */ | |
712 | struct list_head vports; | |
713 | struct fc_vport *vport; | |
42e9a92f RL |
714 | |
715 | /* Operational Information */ | |
716 | struct libfc_function_template tt; | |
3a3b42bf RL |
717 | u8 link_up; |
718 | u8 qfull; | |
9a6cf881 | 719 | u16 vlan; |
3a3b42bf RL |
720 | enum fc_lport_state state; |
721 | unsigned long boot_time; | |
722 | struct fc_host_statistics host_stats; | |
1bd49b48 | 723 | struct fc_stats __percpu *stats; |
3a3b42bf RL |
724 | u8 retry_count; |
725 | ||
726 | /* Fabric information */ | |
f3e4ff28 | 727 | u32 port_id; |
3a3b42bf RL |
728 | u64 wwpn; |
729 | u64 wwnn; | |
730 | unsigned int service_params; | |
731 | unsigned int e_d_tov; | |
732 | unsigned int r_a_tov; | |
733 | struct fc_els_rnid_gen rnid_gen; | |
42e9a92f RL |
734 | |
735 | /* Capabilities */ | |
3a3b42bf RL |
736 | u32 sg_supp:1; |
737 | u32 seq_offload:1; | |
738 | u32 crc_offload:1; | |
739 | u32 lro_enabled:1; | |
740 | u32 does_npiv:1; | |
741 | u32 npiv_enabled:1; | |
3726f358 | 742 | u32 point_to_multipoint:1; |
d78c317f | 743 | u32 fdmi_enabled:1; |
3a3b42bf RL |
744 | u32 mfs; |
745 | u8 max_retry_count; | |
746 | u8 max_rport_retry_count; | |
f90377ab | 747 | u16 rport_priv_size; |
3a3b42bf RL |
748 | u16 link_speed; |
749 | u16 link_supported_speeds; | |
750 | u16 lro_xid; | |
751 | unsigned int lso_max; | |
752 | struct fc_ns_fts fcts; | |
42e9a92f RL |
753 | |
754 | /* Miscellaneous */ | |
f3e4ff28 HR |
755 | struct mutex lp_mutex; |
756 | struct list_head list; | |
3a3b42bf | 757 | struct delayed_work retry_work; |
baf9fdf0 | 758 | void *prov[FC_FC4_PROV_SIZE]; |
f3e4ff28 | 759 | struct list_head lport_list; |
42e9a92f RL |
760 | }; |
761 | ||
96ad8464 JE |
762 | /** |
763 | * struct fc4_prov - FC-4 provider registration | |
764 | * @prli: Handler for incoming PRLI | |
765 | * @prlo: Handler for session reset | |
766 | * @recv: Handler for incoming request | |
767 | * @module: Pointer to module. May be NULL. | |
768 | */ | |
769 | struct fc4_prov { | |
770 | int (*prli)(struct fc_rport_priv *, u32 spp_len, | |
771 | const struct fc_els_spp *spp_in, | |
772 | struct fc_els_spp *spp_out); | |
773 | void (*prlo)(struct fc_rport_priv *); | |
774 | void (*recv)(struct fc_lport *, struct fc_frame *); | |
775 | struct module *module; | |
776 | }; | |
777 | ||
778 | /* | |
779 | * Register FC-4 provider with libfc. | |
780 | */ | |
781 | int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *); | |
782 | void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *); | |
783 | ||
34f42a07 | 784 | /* |
42e9a92f RL |
785 | * FC_LPORT HELPER FUNCTIONS |
786 | *****************************/ | |
3a3b42bf RL |
787 | |
788 | /** | |
789 | * fc_lport_test_ready() - Determine if a local port is in the READY state | |
790 | * @lport: The local port to test | |
791 | */ | |
792 | static inline int fc_lport_test_ready(struct fc_lport *lport) | |
42e9a92f | 793 | { |
3a3b42bf | 794 | return lport->state == LPORT_ST_READY; |
42e9a92f RL |
795 | } |
796 | ||
3a3b42bf RL |
797 | /** |
798 | * fc_set_wwnn() - Set the World Wide Node Name of a local port | |
799 | * @lport: The local port whose WWNN is to be set | |
800 | * @wwnn: The new WWNN | |
801 | */ | |
802 | static inline void fc_set_wwnn(struct fc_lport *lport, u64 wwnn) | |
42e9a92f | 803 | { |
3a3b42bf | 804 | lport->wwnn = wwnn; |
42e9a92f RL |
805 | } |
806 | ||
3a3b42bf RL |
807 | /** |
808 | * fc_set_wwpn() - Set the World Wide Port Name of a local port | |
809 | * @lport: The local port whose WWPN is to be set | |
67d35e70 | 810 | * @wwpn: The new WWPN |
3a3b42bf | 811 | */ |
67d35e70 | 812 | static inline void fc_set_wwpn(struct fc_lport *lport, u64 wwpn) |
42e9a92f | 813 | { |
67d35e70 | 814 | lport->wwpn = wwpn; |
42e9a92f RL |
815 | } |
816 | ||
3a3b42bf RL |
817 | /** |
818 | * fc_lport_state_enter() - Change a local port's state | |
819 | * @lport: The local port whose state is to change | |
820 | * @state: The new state | |
821 | */ | |
822 | static inline void fc_lport_state_enter(struct fc_lport *lport, | |
42e9a92f RL |
823 | enum fc_lport_state state) |
824 | { | |
3a3b42bf RL |
825 | if (state != lport->state) |
826 | lport->retry_count = 0; | |
827 | lport->state = state; | |
42e9a92f RL |
828 | } |
829 | ||
3a3b42bf RL |
830 | /** |
831 | * fc_lport_init_stats() - Allocate per-CPU statistics for a local port | |
832 | * @lport: The local port whose statistics are to be initialized | |
833 | */ | |
834 | static inline int fc_lport_init_stats(struct fc_lport *lport) | |
582b45bc | 835 | { |
1bd49b48 VD |
836 | lport->stats = alloc_percpu(struct fc_stats); |
837 | if (!lport->stats) | |
582b45bc RL |
838 | return -ENOMEM; |
839 | return 0; | |
840 | } | |
841 | ||
3a3b42bf RL |
842 | /** |
843 | * fc_lport_free_stats() - Free memory for a local port's statistics | |
844 | * @lport: The local port whose statistics are to be freed | |
845 | */ | |
846 | static inline void fc_lport_free_stats(struct fc_lport *lport) | |
582b45bc | 847 | { |
1bd49b48 | 848 | free_percpu(lport->stats); |
582b45bc RL |
849 | } |
850 | ||
3a3b42bf RL |
851 | /** |
852 | * lport_priv() - Return the private data from a local port | |
40d6b939 | 853 | * @lport: The local port whose private data is to be retrieved |
3a3b42bf RL |
854 | */ |
855 | static inline void *lport_priv(const struct fc_lport *lport) | |
a0a25da2 | 856 | { |
3a3b42bf | 857 | return (void *)(lport + 1); |
a0a25da2 VD |
858 | } |
859 | ||
860 | /** | |
3a3b42bf RL |
861 | * libfc_host_alloc() - Allocate a Scsi_Host with room for a local port and |
862 | * LLD private data | |
863 | * @sht: The SCSI host template | |
864 | * @priv_size: Size of private data | |
a0a25da2 | 865 | * |
86221969 | 866 | * Returns: libfc lport |
a0a25da2 | 867 | */ |
86221969 | 868 | static inline struct fc_lport * |
a0a25da2 VD |
869 | libfc_host_alloc(struct scsi_host_template *sht, int priv_size) |
870 | { | |
86221969 CL |
871 | struct fc_lport *lport; |
872 | struct Scsi_Host *shost; | |
873 | ||
874 | shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size); | |
875 | if (!shost) | |
876 | return NULL; | |
877 | lport = shost_priv(shost); | |
878 | lport->host = shost; | |
879 | INIT_LIST_HEAD(&lport->ema_list); | |
174e1ebf | 880 | INIT_LIST_HEAD(&lport->vports); |
86221969 | 881 | return lport; |
a0a25da2 | 882 | } |
42e9a92f | 883 | |
34f42a07 | 884 | /* |
3a3b42bf | 885 | * FC_FCP HELPER FUNCTIONS |
42e9a92f | 886 | *****************************/ |
3a3b42bf RL |
887 | static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp) |
888 | { | |
889 | if (fsp && fsp->cmd) | |
890 | return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE; | |
891 | return false; | |
892 | } | |
42e9a92f RL |
893 | |
894 | /* | |
3a3b42bf RL |
895 | * LOCAL PORT LAYER |
896 | *****************************/ | |
897 | int fc_lport_init(struct fc_lport *); | |
898 | int fc_lport_destroy(struct fc_lport *); | |
899 | int fc_fabric_logoff(struct fc_lport *); | |
900 | int fc_fabric_login(struct fc_lport *); | |
8faecddb | 901 | void __fc_linkup(struct fc_lport *); |
42e9a92f | 902 | void fc_linkup(struct fc_lport *); |
8faecddb | 903 | void __fc_linkdown(struct fc_lport *); |
42e9a92f | 904 | void fc_linkdown(struct fc_lport *); |
3a3b42bf RL |
905 | void fc_vport_setlink(struct fc_lport *); |
906 | void fc_vports_linkchange(struct fc_lport *); | |
42e9a92f | 907 | int fc_lport_config(struct fc_lport *); |
42e9a92f | 908 | int fc_lport_reset(struct fc_lport *); |
c5cb444c | 909 | void fc_lport_recv(struct fc_lport *lport, struct fc_frame *fp); |
3a3b42bf RL |
910 | int fc_set_mfs(struct fc_lport *, u32 mfs); |
911 | struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize); | |
912 | struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id); | |
75cc8cfc | 913 | int fc_lport_bsg_request(struct bsg_job *); |
3726f358 | 914 | void fc_lport_set_local_id(struct fc_lport *, u32 port_id); |
70d53b04 | 915 | void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *); |
a51ab396 | 916 | |
34f42a07 | 917 | /* |
42e9a92f RL |
918 | * REMOTE PORT LAYER |
919 | *****************************/ | |
3a3b42bf | 920 | void fc_rport_terminate_io(struct fc_rport *); |
e87b7777 HR |
921 | struct fc_rport_priv *fc_rport_lookup(const struct fc_lport *lport, |
922 | u32 port_id); | |
2580064b | 923 | struct fc_rport_priv *fc_rport_create(struct fc_lport *, u32); |
944ef968 | 924 | void fc_rport_destroy(struct kref *kref); |
05d7d3b0 | 925 | int fc_rport_login(struct fc_rport_priv *rdata); |
c96c792a | 926 | int fc_rport_logoff(struct fc_rport_priv *rdata); |
e76ee65f | 927 | void fc_rport_recv_req(struct fc_lport *lport, struct fc_frame *fp); |
5922a957 | 928 | void fc_rport_flush_queue(void); |
42e9a92f | 929 | |
34f42a07 | 930 | /* |
42e9a92f RL |
931 | * DISCOVERY LAYER |
932 | *****************************/ | |
0807619d RL |
933 | void fc_disc_init(struct fc_lport *); |
934 | void fc_disc_config(struct fc_lport *, void *); | |
42e9a92f | 935 | |
0685230c JE |
936 | static inline struct fc_lport *fc_disc_lport(struct fc_disc *disc) |
937 | { | |
938 | return container_of(disc, struct fc_lport, disc); | |
939 | } | |
940 | ||
34f42a07 | 941 | /* |
3a3b42bf | 942 | * FCP LAYER |
42e9a92f | 943 | *****************************/ |
42e9a92f | 944 | int fc_fcp_init(struct fc_lport *); |
3a3b42bf | 945 | void fc_fcp_destroy(struct fc_lport *); |
42e9a92f RL |
946 | |
947 | /* | |
3a3b42bf RL |
948 | * SCSI INTERACTION LAYER |
949 | *****************************/ | |
f281233d | 950 | int fc_queuecommand(struct Scsi_Host *, struct scsi_cmnd *); |
3a3b42bf RL |
951 | int fc_eh_abort(struct scsi_cmnd *); |
952 | int fc_eh_device_reset(struct scsi_cmnd *); | |
953 | int fc_eh_host_reset(struct scsi_cmnd *); | |
954 | int fc_slave_alloc(struct scsi_device *); | |
42e9a92f | 955 | |
34f42a07 | 956 | /* |
42e9a92f RL |
957 | * ELS/CT interface |
958 | *****************************/ | |
3a3b42bf RL |
959 | int fc_elsct_init(struct fc_lport *); |
960 | struct fc_seq *fc_elsct_send(struct fc_lport *, u32 did, | |
961 | struct fc_frame *, | |
11b56188 CL |
962 | unsigned int op, |
963 | void (*resp)(struct fc_seq *, | |
3a3b42bf | 964 | struct fc_frame *, |
11b56188 CL |
965 | void *arg), |
966 | void *arg, u32 timer_msec); | |
967 | void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *); | |
968 | void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *); | |
24f089e2 JE |
969 | void fc_fill_reply_hdr(struct fc_frame *, const struct fc_frame *, |
970 | enum fc_rctl, u32 parm_offset); | |
971 | void fc_fill_hdr(struct fc_frame *, const struct fc_frame *, | |
972 | enum fc_rctl, u32 f_ctl, u16 seq_cnt, u32 parm_offset); | |
42e9a92f RL |
973 | |
974 | ||
34f42a07 | 975 | /* |
42e9a92f RL |
976 | * EXCHANGE MANAGER LAYER |
977 | *****************************/ | |
3a3b42bf | 978 | int fc_exch_init(struct fc_lport *); |
4e5fae7a | 979 | void fc_exch_update_stats(struct fc_lport *lport); |
3afd2d15 HR |
980 | struct fc_seq *fc_exch_seq_send(struct fc_lport *lport, |
981 | struct fc_frame *fp, | |
982 | void (*resp)(struct fc_seq *, | |
983 | struct fc_frame *fp, | |
984 | void *arg), | |
985 | void (*destructor)(struct fc_seq *, void *), | |
986 | void *arg, u32 timer_msec); | |
7ab24dd1 HR |
987 | void fc_seq_els_rsp_send(struct fc_frame *, enum fc_els_cmd, |
988 | struct fc_seq_els_data *); | |
c6865b30 | 989 | struct fc_seq *fc_seq_start_next(struct fc_seq *sp); |
f1d61e6e HR |
990 | void fc_seq_set_resp(struct fc_seq *sp, |
991 | void (*resp)(struct fc_seq *, struct fc_frame *, void *), | |
992 | void *arg); | |
96d564e2 | 993 | struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp); |
9625cc48 | 994 | void fc_seq_release(struct fc_seq *sp); |
3a3b42bf RL |
995 | struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *, |
996 | struct fc_exch_mgr *, | |
96316099 | 997 | bool (*match)(struct fc_frame *)); |
3a3b42bf | 998 | void fc_exch_mgr_del(struct fc_exch_mgr_anchor *); |
174e1ebf | 999 | int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst); |
3a3b42bf RL |
1000 | struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class, |
1001 | u16 min_xid, u16 max_xid, | |
52ff878c | 1002 | bool (*match)(struct fc_frame *)); |
3a3b42bf RL |
1003 | void fc_exch_mgr_free(struct fc_lport *); |
1004 | void fc_exch_recv(struct fc_lport *, struct fc_frame *); | |
1f6ff364 | 1005 | void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); |
0cac937d | 1006 | int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, struct fc_frame *fp); |
0ebaed17 | 1007 | int fc_seq_exch_abort(const struct fc_seq *, unsigned int timer_msec); |
768c72cc | 1008 | void fc_exch_done(struct fc_seq *sp); |
42e9a92f RL |
1009 | |
1010 | /* | |
1011 | * Functions for fc_functions_template | |
1012 | */ | |
3a3b42bf | 1013 | void fc_get_host_speed(struct Scsi_Host *); |
3a3b42bf RL |
1014 | void fc_get_host_port_state(struct Scsi_Host *); |
1015 | void fc_set_rport_loss_tmo(struct fc_rport *, u32 timeout); | |
42e9a92f RL |
1016 | struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *); |
1017 | ||
42e9a92f | 1018 | #endif /* _LIBFC_H_ */ |