Commit | Line | Data |
---|---|---|
7725ccfd | 1 | /* |
a36c61f9 | 2 | * Copyright (c) 2005-2010 Brocade Communications Systems, Inc. |
7725ccfd JH |
3 | * All rights reserved |
4 | * www.brocade.com | |
5 | * | |
6 | * Linux driver for Brocade Fibre Channel Host Bus Adapter. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License (GPL) Version 2 as | |
10 | * published by the Free Software Foundation | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | */ | |
17 | ||
5fbe25c7 | 18 | /* |
7725ccfd JH |
19 | * fcpim.c - FCP initiator mode i-t nexus state machine |
20 | */ | |
21 | ||
f16a1750 | 22 | #include "bfad_drv.h" |
a36c61f9 KG |
23 | #include "bfa_fcs.h" |
24 | #include "bfa_fcbuild.h" | |
a36c61f9 | 25 | #include "bfad_im.h" |
7725ccfd JH |
26 | |
27 | BFA_TRC_FILE(FCS, FCPIM); | |
28 | ||
29 | /* | |
30 | * forward declarations | |
31 | */ | |
a36c61f9 KG |
32 | static void bfa_fcs_itnim_timeout(void *arg); |
33 | static void bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim); | |
34 | static void bfa_fcs_itnim_send_prli(void *itnim_cbarg, | |
7725ccfd | 35 | struct bfa_fcxp_s *fcxp_alloced); |
a36c61f9 KG |
36 | static void bfa_fcs_itnim_prli_response(void *fcsarg, |
37 | struct bfa_fcxp_s *fcxp, void *cbarg, | |
38 | bfa_status_t req_status, u32 rsp_len, | |
39 | u32 resid_len, struct fchs_s *rsp_fchs); | |
7725ccfd | 40 | |
5fbe25c7 | 41 | /* |
7725ccfd JH |
42 | * fcs_itnim_sm FCS itnim state machine events |
43 | */ | |
44 | ||
45 | enum bfa_fcs_itnim_event { | |
46 | BFA_FCS_ITNIM_SM_ONLINE = 1, /* rport online event */ | |
47 | BFA_FCS_ITNIM_SM_OFFLINE = 2, /* rport offline */ | |
48 | BFA_FCS_ITNIM_SM_FRMSENT = 3, /* prli frame is sent */ | |
49 | BFA_FCS_ITNIM_SM_RSP_OK = 4, /* good response */ | |
50 | BFA_FCS_ITNIM_SM_RSP_ERROR = 5, /* error response */ | |
51 | BFA_FCS_ITNIM_SM_TIMEOUT = 6, /* delay timeout */ | |
a36c61f9 KG |
52 | BFA_FCS_ITNIM_SM_HCB_OFFLINE = 7, /* BFA online callback */ |
53 | BFA_FCS_ITNIM_SM_HCB_ONLINE = 8, /* BFA offline callback */ | |
7725ccfd JH |
54 | BFA_FCS_ITNIM_SM_INITIATOR = 9, /* rport is initiator */ |
55 | BFA_FCS_ITNIM_SM_DELETE = 10, /* delete event from rport */ | |
56 | BFA_FCS_ITNIM_SM_PRLO = 11, /* delete event from rport */ | |
57 | }; | |
58 | ||
a36c61f9 | 59 | static void bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim, |
7725ccfd | 60 | enum bfa_fcs_itnim_event event); |
a36c61f9 | 61 | static void bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim, |
7725ccfd | 62 | enum bfa_fcs_itnim_event event); |
a36c61f9 | 63 | static void bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim, |
7725ccfd | 64 | enum bfa_fcs_itnim_event event); |
a36c61f9 | 65 | static void bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim, |
7725ccfd | 66 | enum bfa_fcs_itnim_event event); |
a36c61f9 | 67 | static void bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim, |
7725ccfd | 68 | enum bfa_fcs_itnim_event event); |
a36c61f9 | 69 | static void bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim, |
7725ccfd | 70 | enum bfa_fcs_itnim_event event); |
a36c61f9 | 71 | static void bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim, |
7725ccfd | 72 | enum bfa_fcs_itnim_event event); |
a36c61f9 | 73 | static void bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim, |
7725ccfd JH |
74 | enum bfa_fcs_itnim_event event); |
75 | ||
76 | static struct bfa_sm_table_s itnim_sm_table[] = { | |
77 | {BFA_SM(bfa_fcs_itnim_sm_offline), BFA_ITNIM_OFFLINE}, | |
78 | {BFA_SM(bfa_fcs_itnim_sm_prli_send), BFA_ITNIM_PRLI_SEND}, | |
79 | {BFA_SM(bfa_fcs_itnim_sm_prli), BFA_ITNIM_PRLI_SENT}, | |
80 | {BFA_SM(bfa_fcs_itnim_sm_prli_retry), BFA_ITNIM_PRLI_RETRY}, | |
81 | {BFA_SM(bfa_fcs_itnim_sm_hcb_online), BFA_ITNIM_HCB_ONLINE}, | |
82 | {BFA_SM(bfa_fcs_itnim_sm_online), BFA_ITNIM_ONLINE}, | |
83 | {BFA_SM(bfa_fcs_itnim_sm_hcb_offline), BFA_ITNIM_HCB_OFFLINE}, | |
84 | {BFA_SM(bfa_fcs_itnim_sm_initiator), BFA_ITNIM_INITIATIOR}, | |
85 | }; | |
86 | ||
5fbe25c7 | 87 | /* |
7725ccfd JH |
88 | * fcs_itnim_sm FCS itnim state machine |
89 | */ | |
90 | ||
91 | static void | |
92 | bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim, | |
a36c61f9 | 93 | enum bfa_fcs_itnim_event event) |
7725ccfd JH |
94 | { |
95 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
96 | bfa_trc(itnim->fcs, event); | |
97 | ||
98 | switch (event) { | |
99 | case BFA_FCS_ITNIM_SM_ONLINE: | |
100 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send); | |
41188cf5 | 101 | itnim->prli_retries = 0; |
7725ccfd JH |
102 | bfa_fcs_itnim_send_prli(itnim, NULL); |
103 | break; | |
104 | ||
105 | case BFA_FCS_ITNIM_SM_OFFLINE: | |
f7f73812 | 106 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE); |
7725ccfd JH |
107 | break; |
108 | ||
109 | case BFA_FCS_ITNIM_SM_INITIATOR: | |
110 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator); | |
111 | break; | |
112 | ||
113 | case BFA_FCS_ITNIM_SM_DELETE: | |
114 | bfa_fcs_itnim_free(itnim); | |
115 | break; | |
116 | ||
117 | default: | |
e641de37 | 118 | bfa_sm_fault(itnim->fcs, event); |
7725ccfd JH |
119 | } |
120 | ||
121 | } | |
122 | ||
123 | static void | |
124 | bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim, | |
a36c61f9 | 125 | enum bfa_fcs_itnim_event event) |
7725ccfd JH |
126 | { |
127 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
128 | bfa_trc(itnim->fcs, event); | |
129 | ||
130 | switch (event) { | |
131 | case BFA_FCS_ITNIM_SM_FRMSENT: | |
132 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli); | |
133 | break; | |
134 | ||
135 | case BFA_FCS_ITNIM_SM_INITIATOR: | |
136 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator); | |
137 | bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe); | |
138 | break; | |
139 | ||
140 | case BFA_FCS_ITNIM_SM_OFFLINE: | |
141 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
142 | bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe); | |
f7f73812 | 143 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE); |
7725ccfd JH |
144 | break; |
145 | ||
146 | case BFA_FCS_ITNIM_SM_DELETE: | |
147 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
148 | bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe); | |
149 | bfa_fcs_itnim_free(itnim); | |
150 | break; | |
151 | ||
152 | default: | |
e641de37 | 153 | bfa_sm_fault(itnim->fcs, event); |
7725ccfd JH |
154 | } |
155 | } | |
156 | ||
157 | static void | |
158 | bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim, | |
a36c61f9 | 159 | enum bfa_fcs_itnim_event event) |
7725ccfd JH |
160 | { |
161 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
162 | bfa_trc(itnim->fcs, event); | |
163 | ||
164 | switch (event) { | |
165 | case BFA_FCS_ITNIM_SM_RSP_OK: | |
4b5e759d JH |
166 | if (itnim->rport->scsi_function == BFA_RPORT_INITIATOR) { |
167 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator); | |
168 | } else { | |
169 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_online); | |
170 | bfa_itnim_online(itnim->bfa_itnim, itnim->seq_rec); | |
171 | } | |
7725ccfd JH |
172 | break; |
173 | ||
174 | case BFA_FCS_ITNIM_SM_RSP_ERROR: | |
175 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_retry); | |
176 | bfa_timer_start(itnim->fcs->bfa, &itnim->timer, | |
177 | bfa_fcs_itnim_timeout, itnim, | |
178 | BFA_FCS_RETRY_TIMEOUT); | |
179 | break; | |
180 | ||
181 | case BFA_FCS_ITNIM_SM_OFFLINE: | |
182 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
183 | bfa_fcxp_discard(itnim->fcxp); | |
f7f73812 | 184 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE); |
7725ccfd JH |
185 | break; |
186 | ||
187 | case BFA_FCS_ITNIM_SM_INITIATOR: | |
188 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator); | |
4b5e759d | 189 | bfa_fcxp_discard(itnim->fcxp); |
7725ccfd JH |
190 | break; |
191 | ||
192 | case BFA_FCS_ITNIM_SM_DELETE: | |
193 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
194 | bfa_fcxp_discard(itnim->fcxp); | |
195 | bfa_fcs_itnim_free(itnim); | |
196 | break; | |
197 | ||
198 | default: | |
e641de37 | 199 | bfa_sm_fault(itnim->fcs, event); |
7725ccfd JH |
200 | } |
201 | } | |
202 | ||
203 | static void | |
204 | bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim, | |
205 | enum bfa_fcs_itnim_event event) | |
206 | { | |
207 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
208 | bfa_trc(itnim->fcs, event); | |
209 | ||
210 | switch (event) { | |
211 | case BFA_FCS_ITNIM_SM_TIMEOUT: | |
41188cf5 JH |
212 | if (itnim->prli_retries < BFA_FCS_RPORT_MAX_RETRIES) { |
213 | itnim->prli_retries++; | |
214 | bfa_trc(itnim->fcs, itnim->prli_retries); | |
215 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send); | |
216 | bfa_fcs_itnim_send_prli(itnim, NULL); | |
217 | } else { | |
218 | /* invoke target offline */ | |
219 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
f7f73812 | 220 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_LOGO_IMP); |
41188cf5 | 221 | } |
7725ccfd JH |
222 | break; |
223 | ||
a36c61f9 | 224 | |
7725ccfd JH |
225 | case BFA_FCS_ITNIM_SM_OFFLINE: |
226 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
227 | bfa_timer_stop(&itnim->timer); | |
f7f73812 | 228 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE); |
7725ccfd JH |
229 | break; |
230 | ||
231 | case BFA_FCS_ITNIM_SM_INITIATOR: | |
232 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator); | |
233 | bfa_timer_stop(&itnim->timer); | |
234 | break; | |
235 | ||
236 | case BFA_FCS_ITNIM_SM_DELETE: | |
237 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
238 | bfa_timer_stop(&itnim->timer); | |
239 | bfa_fcs_itnim_free(itnim); | |
240 | break; | |
241 | ||
242 | default: | |
e641de37 | 243 | bfa_sm_fault(itnim->fcs, event); |
7725ccfd JH |
244 | } |
245 | } | |
246 | ||
247 | static void | |
248 | bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim, | |
249 | enum bfa_fcs_itnim_event event) | |
250 | { | |
a36c61f9 KG |
251 | struct bfad_s *bfad = (struct bfad_s *)itnim->fcs->bfad; |
252 | char lpwwn_buf[BFA_STRING_32]; | |
253 | char rpwwn_buf[BFA_STRING_32]; | |
254 | ||
7725ccfd JH |
255 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
256 | bfa_trc(itnim->fcs, event); | |
257 | ||
258 | switch (event) { | |
259 | case BFA_FCS_ITNIM_SM_HCB_ONLINE: | |
260 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_online); | |
261 | bfa_fcb_itnim_online(itnim->itnim_drv); | |
a36c61f9 KG |
262 | wwn2str(lpwwn_buf, bfa_fcs_lport_get_pwwn(itnim->rport->port)); |
263 | wwn2str(rpwwn_buf, itnim->rport->pwwn); | |
88166242 | 264 | BFA_LOG(KERN_INFO, bfad, bfa_log_level, |
a36c61f9 KG |
265 | "Target (WWN = %s) is online for initiator (WWN = %s)\n", |
266 | rpwwn_buf, lpwwn_buf); | |
7725ccfd JH |
267 | break; |
268 | ||
269 | case BFA_FCS_ITNIM_SM_OFFLINE: | |
270 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
271 | bfa_itnim_offline(itnim->bfa_itnim); | |
f7f73812 | 272 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE); |
7725ccfd JH |
273 | break; |
274 | ||
275 | case BFA_FCS_ITNIM_SM_DELETE: | |
276 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
277 | bfa_fcs_itnim_free(itnim); | |
278 | break; | |
279 | ||
280 | default: | |
e641de37 | 281 | bfa_sm_fault(itnim->fcs, event); |
7725ccfd JH |
282 | } |
283 | } | |
284 | ||
285 | static void | |
286 | bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim, | |
a36c61f9 | 287 | enum bfa_fcs_itnim_event event) |
7725ccfd | 288 | { |
a36c61f9 KG |
289 | struct bfad_s *bfad = (struct bfad_s *)itnim->fcs->bfad; |
290 | char lpwwn_buf[BFA_STRING_32]; | |
291 | char rpwwn_buf[BFA_STRING_32]; | |
292 | ||
7725ccfd JH |
293 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
294 | bfa_trc(itnim->fcs, event); | |
295 | ||
296 | switch (event) { | |
297 | case BFA_FCS_ITNIM_SM_OFFLINE: | |
298 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_offline); | |
299 | bfa_fcb_itnim_offline(itnim->itnim_drv); | |
300 | bfa_itnim_offline(itnim->bfa_itnim); | |
a36c61f9 KG |
301 | wwn2str(lpwwn_buf, bfa_fcs_lport_get_pwwn(itnim->rport->port)); |
302 | wwn2str(rpwwn_buf, itnim->rport->pwwn); | |
303 | if (bfa_fcs_lport_is_online(itnim->rport->port) == BFA_TRUE) | |
88166242 | 304 | BFA_LOG(KERN_ERR, bfad, bfa_log_level, |
a36c61f9 KG |
305 | "Target (WWN = %s) connectivity lost for " |
306 | "initiator (WWN = %s)\n", rpwwn_buf, lpwwn_buf); | |
f8ceafde | 307 | else |
88166242 | 308 | BFA_LOG(KERN_INFO, bfad, bfa_log_level, |
a36c61f9 KG |
309 | "Target (WWN = %s) offlined by initiator (WWN = %s)\n", |
310 | rpwwn_buf, lpwwn_buf); | |
7725ccfd JH |
311 | break; |
312 | ||
313 | case BFA_FCS_ITNIM_SM_DELETE: | |
314 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
315 | bfa_fcs_itnim_free(itnim); | |
316 | break; | |
317 | ||
318 | default: | |
e641de37 | 319 | bfa_sm_fault(itnim->fcs, event); |
7725ccfd JH |
320 | } |
321 | } | |
322 | ||
323 | static void | |
324 | bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim, | |
325 | enum bfa_fcs_itnim_event event) | |
326 | { | |
327 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
328 | bfa_trc(itnim->fcs, event); | |
329 | ||
330 | switch (event) { | |
331 | case BFA_FCS_ITNIM_SM_HCB_OFFLINE: | |
332 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
f7f73812 | 333 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE); |
7725ccfd JH |
334 | break; |
335 | ||
336 | case BFA_FCS_ITNIM_SM_DELETE: | |
337 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
338 | bfa_fcs_itnim_free(itnim); | |
339 | break; | |
340 | ||
341 | default: | |
e641de37 | 342 | bfa_sm_fault(itnim->fcs, event); |
7725ccfd JH |
343 | } |
344 | } | |
345 | ||
346 | /* | |
347 | * This state is set when a discovered rport is also in intiator mode. | |
348 | * This ITN is marked as no_op and is not active and will not be truned into | |
349 | * online state. | |
350 | */ | |
351 | static void | |
352 | bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim, | |
a36c61f9 | 353 | enum bfa_fcs_itnim_event event) |
7725ccfd JH |
354 | { |
355 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
356 | bfa_trc(itnim->fcs, event); | |
357 | ||
358 | switch (event) { | |
359 | case BFA_FCS_ITNIM_SM_OFFLINE: | |
360 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
f7f73812 | 361 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_FC4_OFFLINE); |
7725ccfd JH |
362 | break; |
363 | ||
364 | case BFA_FCS_ITNIM_SM_RSP_ERROR: | |
365 | case BFA_FCS_ITNIM_SM_ONLINE: | |
366 | case BFA_FCS_ITNIM_SM_INITIATOR: | |
367 | break; | |
368 | ||
369 | case BFA_FCS_ITNIM_SM_DELETE: | |
370 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
371 | bfa_fcs_itnim_free(itnim); | |
372 | break; | |
373 | ||
374 | default: | |
e641de37 | 375 | bfa_sm_fault(itnim->fcs, event); |
7725ccfd JH |
376 | } |
377 | } | |
378 | ||
7725ccfd JH |
379 | static void |
380 | bfa_fcs_itnim_send_prli(void *itnim_cbarg, struct bfa_fcxp_s *fcxp_alloced) | |
381 | { | |
382 | struct bfa_fcs_itnim_s *itnim = itnim_cbarg; | |
383 | struct bfa_fcs_rport_s *rport = itnim->rport; | |
a36c61f9 KG |
384 | struct bfa_fcs_lport_s *port = rport->port; |
385 | struct fchs_s fchs; | |
7725ccfd | 386 | struct bfa_fcxp_s *fcxp; |
a36c61f9 | 387 | int len; |
7725ccfd JH |
388 | |
389 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
390 | ||
391 | fcxp = fcxp_alloced ? fcxp_alloced : bfa_fcs_fcxp_alloc(port->fcs); | |
392 | if (!fcxp) { | |
393 | itnim->stats.fcxp_alloc_wait++; | |
a36c61f9 | 394 | bfa_fcs_fcxp_alloc_wait(port->fcs->bfa, &itnim->fcxp_wqe, |
7725ccfd JH |
395 | bfa_fcs_itnim_send_prli, itnim); |
396 | return; | |
397 | } | |
398 | itnim->fcxp = fcxp; | |
399 | ||
a36c61f9 KG |
400 | len = fc_prli_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), |
401 | itnim->rport->pid, bfa_fcs_lport_get_fcid(port), 0); | |
7725ccfd JH |
402 | |
403 | bfa_fcxp_send(fcxp, rport->bfa_rport, port->fabric->vf_id, port->lp_tag, | |
404 | BFA_FALSE, FC_CLASS_3, len, &fchs, | |
a36c61f9 KG |
405 | bfa_fcs_itnim_prli_response, (void *)itnim, |
406 | FC_MAX_PDUSZ, FC_ELS_TOV); | |
7725ccfd JH |
407 | |
408 | itnim->stats.prli_sent++; | |
409 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_FRMSENT); | |
410 | } | |
411 | ||
412 | static void | |
413 | bfa_fcs_itnim_prli_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, | |
414 | bfa_status_t req_status, u32 rsp_len, | |
415 | u32 resid_len, struct fchs_s *rsp_fchs) | |
416 | { | |
a36c61f9 KG |
417 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cbarg; |
418 | struct fc_els_cmd_s *els_cmd; | |
419 | struct fc_prli_s *prli_resp; | |
420 | struct fc_ls_rjt_s *ls_rjt; | |
7725ccfd JH |
421 | struct fc_prli_params_s *sparams; |
422 | ||
423 | bfa_trc(itnim->fcs, req_status); | |
424 | ||
425 | /* | |
426 | * Sanity Checks | |
427 | */ | |
428 | if (req_status != BFA_STATUS_OK) { | |
429 | itnim->stats.prli_rsp_err++; | |
430 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR); | |
431 | return; | |
432 | } | |
433 | ||
434 | els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp); | |
435 | ||
436 | if (els_cmd->els_code == FC_ELS_ACC) { | |
437 | prli_resp = (struct fc_prli_s *) els_cmd; | |
438 | ||
439 | if (fc_prli_rsp_parse(prli_resp, rsp_len) != FC_PARSE_OK) { | |
440 | bfa_trc(itnim->fcs, rsp_len); | |
441 | /* | |
442 | * Check if this r-port is also in Initiator mode. | |
443 | * If so, we need to set this ITN as a no-op. | |
444 | */ | |
445 | if (prli_resp->parampage.servparams.initiator) { | |
446 | bfa_trc(itnim->fcs, prli_resp->parampage.type); | |
447 | itnim->rport->scsi_function = | |
a36c61f9 | 448 | BFA_RPORT_INITIATOR; |
7725ccfd JH |
449 | itnim->stats.prli_rsp_acc++; |
450 | bfa_sm_send_event(itnim, | |
4b5e759d | 451 | BFA_FCS_ITNIM_SM_RSP_OK); |
7725ccfd JH |
452 | return; |
453 | } | |
454 | ||
455 | itnim->stats.prli_rsp_parse_err++; | |
456 | return; | |
457 | } | |
458 | itnim->rport->scsi_function = BFA_RPORT_TARGET; | |
459 | ||
460 | sparams = &prli_resp->parampage.servparams; | |
a36c61f9 KG |
461 | itnim->seq_rec = sparams->retry; |
462 | itnim->rec_support = sparams->rec_support; | |
7725ccfd | 463 | itnim->task_retry_id = sparams->task_retry_id; |
a36c61f9 | 464 | itnim->conf_comp = sparams->confirm; |
7725ccfd JH |
465 | |
466 | itnim->stats.prli_rsp_acc++; | |
467 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_OK); | |
468 | } else { | |
469 | ls_rjt = (struct fc_ls_rjt_s *) BFA_FCXP_RSP_PLD(fcxp); | |
470 | ||
471 | bfa_trc(itnim->fcs, ls_rjt->reason_code); | |
472 | bfa_trc(itnim->fcs, ls_rjt->reason_code_expl); | |
473 | ||
474 | itnim->stats.prli_rsp_rjt++; | |
475 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR); | |
476 | } | |
477 | } | |
478 | ||
479 | static void | |
480 | bfa_fcs_itnim_timeout(void *arg) | |
481 | { | |
a36c61f9 | 482 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) arg; |
7725ccfd JH |
483 | |
484 | itnim->stats.timeout++; | |
485 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_TIMEOUT); | |
486 | } | |
487 | ||
488 | static void | |
489 | bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim) | |
490 | { | |
491 | bfa_itnim_delete(itnim->bfa_itnim); | |
492 | bfa_fcb_itnim_free(itnim->fcs->bfad, itnim->itnim_drv); | |
493 | } | |
494 | ||
495 | ||
496 | ||
5fbe25c7 | 497 | /* |
7725ccfd JH |
498 | * itnim_public FCS ITNIM public interfaces |
499 | */ | |
500 | ||
5fbe25c7 | 501 | /* |
a36c61f9 | 502 | * Called by rport when a new rport is created. |
7725ccfd JH |
503 | * |
504 | * @param[in] rport - remote port. | |
505 | */ | |
506 | struct bfa_fcs_itnim_s * | |
507 | bfa_fcs_itnim_create(struct bfa_fcs_rport_s *rport) | |
508 | { | |
a36c61f9 | 509 | struct bfa_fcs_lport_s *port = rport->port; |
7725ccfd | 510 | struct bfa_fcs_itnim_s *itnim; |
a36c61f9 | 511 | struct bfad_itnim_s *itnim_drv; |
7725ccfd JH |
512 | struct bfa_itnim_s *bfa_itnim; |
513 | ||
514 | /* | |
515 | * call bfad to allocate the itnim | |
516 | */ | |
517 | bfa_fcb_itnim_alloc(port->fcs->bfad, &itnim, &itnim_drv); | |
518 | if (itnim == NULL) { | |
519 | bfa_trc(port->fcs, rport->pwwn); | |
520 | return NULL; | |
521 | } | |
522 | ||
523 | /* | |
524 | * Initialize itnim | |
525 | */ | |
526 | itnim->rport = rport; | |
527 | itnim->fcs = rport->fcs; | |
528 | itnim->itnim_drv = itnim_drv; | |
529 | ||
530 | /* | |
531 | * call BFA to create the itnim | |
532 | */ | |
a36c61f9 KG |
533 | bfa_itnim = |
534 | bfa_itnim_create(port->fcs->bfa, rport->bfa_rport, itnim); | |
7725ccfd JH |
535 | |
536 | if (bfa_itnim == NULL) { | |
537 | bfa_trc(port->fcs, rport->pwwn); | |
538 | bfa_fcb_itnim_free(port->fcs->bfad, itnim_drv); | |
d4b671c5 | 539 | WARN_ON(1); |
7725ccfd JH |
540 | return NULL; |
541 | } | |
542 | ||
a36c61f9 KG |
543 | itnim->bfa_itnim = bfa_itnim; |
544 | itnim->seq_rec = BFA_FALSE; | |
545 | itnim->rec_support = BFA_FALSE; | |
546 | itnim->conf_comp = BFA_FALSE; | |
7725ccfd JH |
547 | itnim->task_retry_id = BFA_FALSE; |
548 | ||
549 | /* | |
550 | * Set State machine | |
551 | */ | |
552 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); | |
553 | ||
554 | return itnim; | |
555 | } | |
556 | ||
5fbe25c7 | 557 | /* |
a36c61f9 | 558 | * Called by rport to delete the instance of FCPIM. |
7725ccfd JH |
559 | * |
560 | * @param[in] rport - remote port. | |
561 | */ | |
562 | void | |
563 | bfa_fcs_itnim_delete(struct bfa_fcs_itnim_s *itnim) | |
564 | { | |
565 | bfa_trc(itnim->fcs, itnim->rport->pid); | |
566 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_DELETE); | |
567 | } | |
568 | ||
5fbe25c7 | 569 | /* |
7725ccfd JH |
570 | * Notification from rport that PLOGI is complete to initiate FC-4 session. |
571 | */ | |
572 | void | |
573 | bfa_fcs_itnim_rport_online(struct bfa_fcs_itnim_s *itnim) | |
574 | { | |
575 | itnim->stats.onlines++; | |
576 | ||
577 | if (!BFA_FCS_PID_IS_WKA(itnim->rport->pid)) { | |
578 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_ONLINE); | |
579 | } else { | |
580 | /* | |
a36c61f9 KG |
581 | * For well known addresses, we set the itnim to initiator |
582 | * state | |
7725ccfd JH |
583 | */ |
584 | itnim->stats.initiator++; | |
585 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR); | |
586 | } | |
587 | } | |
588 | ||
5fbe25c7 | 589 | /* |
7725ccfd JH |
590 | * Called by rport to handle a remote device offline. |
591 | */ | |
592 | void | |
593 | bfa_fcs_itnim_rport_offline(struct bfa_fcs_itnim_s *itnim) | |
594 | { | |
595 | itnim->stats.offlines++; | |
596 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_OFFLINE); | |
597 | } | |
598 | ||
5fbe25c7 | 599 | /* |
7725ccfd JH |
600 | * Called by rport when remote port is known to be an initiator from |
601 | * PRLI received. | |
602 | */ | |
603 | void | |
604 | bfa_fcs_itnim_is_initiator(struct bfa_fcs_itnim_s *itnim) | |
605 | { | |
606 | bfa_trc(itnim->fcs, itnim->rport->pid); | |
607 | itnim->stats.initiator++; | |
608 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR); | |
609 | } | |
610 | ||
5fbe25c7 | 611 | /* |
7725ccfd JH |
612 | * Called by rport to check if the itnim is online. |
613 | */ | |
614 | bfa_status_t | |
615 | bfa_fcs_itnim_get_online_state(struct bfa_fcs_itnim_s *itnim) | |
616 | { | |
617 | bfa_trc(itnim->fcs, itnim->rport->pid); | |
618 | switch (bfa_sm_to_state(itnim_sm_table, itnim->sm)) { | |
619 | case BFA_ITNIM_ONLINE: | |
620 | case BFA_ITNIM_INITIATIOR: | |
621 | return BFA_STATUS_OK; | |
622 | ||
623 | default: | |
624 | return BFA_STATUS_NO_FCPIM_NEXUS; | |
7725ccfd JH |
625 | } |
626 | } | |
627 | ||
5fbe25c7 | 628 | /* |
7725ccfd JH |
629 | * BFA completion callback for bfa_itnim_online(). |
630 | */ | |
631 | void | |
632 | bfa_cb_itnim_online(void *cbarg) | |
633 | { | |
a36c61f9 | 634 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cbarg; |
7725ccfd JH |
635 | |
636 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
637 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_ONLINE); | |
638 | } | |
639 | ||
5fbe25c7 | 640 | /* |
7725ccfd JH |
641 | * BFA completion callback for bfa_itnim_offline(). |
642 | */ | |
643 | void | |
644 | bfa_cb_itnim_offline(void *cb_arg) | |
645 | { | |
a36c61f9 | 646 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cb_arg; |
7725ccfd JH |
647 | |
648 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
649 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_OFFLINE); | |
650 | } | |
651 | ||
5fbe25c7 | 652 | /* |
7725ccfd JH |
653 | * Mark the beginning of PATH TOV handling. IO completion callbacks |
654 | * are still pending. | |
655 | */ | |
656 | void | |
657 | bfa_cb_itnim_tov_begin(void *cb_arg) | |
658 | { | |
a36c61f9 | 659 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cb_arg; |
7725ccfd JH |
660 | |
661 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
7725ccfd JH |
662 | } |
663 | ||
5fbe25c7 | 664 | /* |
7725ccfd JH |
665 | * Mark the end of PATH TOV handling. All pending IOs are already cleaned up. |
666 | */ | |
667 | void | |
668 | bfa_cb_itnim_tov(void *cb_arg) | |
669 | { | |
a36c61f9 KG |
670 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cb_arg; |
671 | struct bfad_itnim_s *itnim_drv = itnim->itnim_drv; | |
7725ccfd JH |
672 | |
673 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
a36c61f9 | 674 | itnim_drv->state = ITNIM_STATE_TIMEOUT; |
7725ccfd JH |
675 | } |
676 | ||
5fbe25c7 | 677 | /* |
a36c61f9 | 678 | * BFA notification to FCS/driver for second level error recovery. |
7725ccfd JH |
679 | * |
680 | * Atleast one I/O request has timedout and target is unresponsive to | |
681 | * repeated abort requests. Second level error recovery should be initiated | |
682 | * by starting implicit logout and recovery procedures. | |
683 | */ | |
684 | void | |
685 | bfa_cb_itnim_sler(void *cb_arg) | |
686 | { | |
a36c61f9 | 687 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *) cb_arg; |
7725ccfd JH |
688 | |
689 | itnim->stats.sler++; | |
690 | bfa_trc(itnim->fcs, itnim->rport->pwwn); | |
f7f73812 | 691 | bfa_sm_send_event(itnim->rport, RPSM_EVENT_LOGO_IMP); |
7725ccfd JH |
692 | } |
693 | ||
694 | struct bfa_fcs_itnim_s * | |
a36c61f9 | 695 | bfa_fcs_itnim_lookup(struct bfa_fcs_lport_s *port, wwn_t rpwwn) |
7725ccfd JH |
696 | { |
697 | struct bfa_fcs_rport_s *rport; | |
698 | rport = bfa_fcs_rport_lookup(port, rpwwn); | |
699 | ||
700 | if (!rport) | |
701 | return NULL; | |
702 | ||
d4b671c5 | 703 | WARN_ON(rport->itnim == NULL); |
f8ceafde | 704 | return rport->itnim; |
7725ccfd JH |
705 | } |
706 | ||
707 | bfa_status_t | |
a36c61f9 | 708 | bfa_fcs_itnim_attr_get(struct bfa_fcs_lport_s *port, wwn_t rpwwn, |
7725ccfd JH |
709 | struct bfa_itnim_attr_s *attr) |
710 | { | |
711 | struct bfa_fcs_itnim_s *itnim = NULL; | |
712 | ||
713 | itnim = bfa_fcs_itnim_lookup(port, rpwwn); | |
714 | ||
715 | if (itnim == NULL) | |
716 | return BFA_STATUS_NO_FCPIM_NEXUS; | |
717 | ||
a36c61f9 KG |
718 | attr->state = bfa_sm_to_state(itnim_sm_table, itnim->sm); |
719 | attr->retry = itnim->seq_rec; | |
720 | attr->rec_support = itnim->rec_support; | |
721 | attr->conf_comp = itnim->conf_comp; | |
7725ccfd | 722 | attr->task_retry_id = itnim->task_retry_id; |
7725ccfd JH |
723 | return BFA_STATUS_OK; |
724 | } | |
725 | ||
726 | bfa_status_t | |
a36c61f9 | 727 | bfa_fcs_itnim_stats_get(struct bfa_fcs_lport_s *port, wwn_t rpwwn, |
7725ccfd JH |
728 | struct bfa_itnim_stats_s *stats) |
729 | { | |
730 | struct bfa_fcs_itnim_s *itnim = NULL; | |
731 | ||
d4b671c5 | 732 | WARN_ON(port == NULL); |
7725ccfd JH |
733 | |
734 | itnim = bfa_fcs_itnim_lookup(port, rpwwn); | |
735 | ||
736 | if (itnim == NULL) | |
737 | return BFA_STATUS_NO_FCPIM_NEXUS; | |
738 | ||
6a18b167 | 739 | memcpy(stats, &itnim->stats, sizeof(struct bfa_itnim_stats_s)); |
7725ccfd JH |
740 | |
741 | return BFA_STATUS_OK; | |
742 | } | |
743 | ||
744 | bfa_status_t | |
a36c61f9 | 745 | bfa_fcs_itnim_stats_clear(struct bfa_fcs_lport_s *port, wwn_t rpwwn) |
7725ccfd JH |
746 | { |
747 | struct bfa_fcs_itnim_s *itnim = NULL; | |
748 | ||
d4b671c5 | 749 | WARN_ON(port == NULL); |
7725ccfd JH |
750 | |
751 | itnim = bfa_fcs_itnim_lookup(port, rpwwn); | |
752 | ||
753 | if (itnim == NULL) | |
754 | return BFA_STATUS_NO_FCPIM_NEXUS; | |
755 | ||
6a18b167 | 756 | memset(&itnim->stats, 0, sizeof(struct bfa_itnim_stats_s)); |
7725ccfd JH |
757 | return BFA_STATUS_OK; |
758 | } | |
759 | ||
760 | void | |
a36c61f9 KG |
761 | bfa_fcs_fcpim_uf_recv(struct bfa_fcs_itnim_s *itnim, |
762 | struct fchs_s *fchs, u16 len) | |
7725ccfd | 763 | { |
a36c61f9 | 764 | struct fc_els_cmd_s *els_cmd; |
7725ccfd JH |
765 | |
766 | bfa_trc(itnim->fcs, fchs->type); | |
767 | ||
768 | if (fchs->type != FC_TYPE_ELS) | |
769 | return; | |
770 | ||
771 | els_cmd = (struct fc_els_cmd_s *) (fchs + 1); | |
772 | ||
773 | bfa_trc(itnim->fcs, els_cmd->els_code); | |
774 | ||
775 | switch (els_cmd->els_code) { | |
776 | case FC_ELS_PRLO: | |
4b5e759d | 777 | bfa_fcs_rport_prlo(itnim->rport, fchs->ox_id); |
7725ccfd JH |
778 | break; |
779 | ||
780 | default: | |
d4b671c5 | 781 | WARN_ON(1); |
7725ccfd JH |
782 | } |
783 | } |