Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. |
| 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 | |
| 18 | /** |
| 19 | * fcpim.c - FCP initiator mode i-t nexus state machine |
| 20 | */ |
| 21 | |
| 22 | #include <bfa.h> |
| 23 | #include <bfa_svc.h> |
| 24 | #include "fcs_fcpim.h" |
| 25 | #include "fcs_rport.h" |
| 26 | #include "fcs_lport.h" |
| 27 | #include "fcs_trcmod.h" |
| 28 | #include "fcs_fcxp.h" |
| 29 | #include "fcs.h" |
| 30 | #include <fcs/bfa_fcs_fcpim.h> |
| 31 | #include <fcb/bfa_fcb_fcpim.h> |
| 32 | #include <aen/bfa_aen_itnim.h> |
| 33 | |
| 34 | BFA_TRC_FILE(FCS, FCPIM); |
| 35 | |
| 36 | /* |
| 37 | * forward declarations |
| 38 | */ |
| 39 | static void bfa_fcs_itnim_timeout(void *arg); |
| 40 | static void bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim); |
| 41 | static void bfa_fcs_itnim_send_prli(void *itnim_cbarg, |
| 42 | struct bfa_fcxp_s *fcxp_alloced); |
| 43 | static void bfa_fcs_itnim_prli_response(void *fcsarg, |
| 44 | struct bfa_fcxp_s *fcxp, |
| 45 | void *cbarg, |
| 46 | bfa_status_t req_status, |
| 47 | u32 rsp_len, |
| 48 | u32 resid_len, |
| 49 | struct fchs_s *rsp_fchs); |
| 50 | static void bfa_fcs_itnim_aen_post(struct bfa_fcs_itnim_s *itnim, |
| 51 | enum bfa_itnim_aen_event event); |
| 52 | |
| 53 | /** |
| 54 | * fcs_itnim_sm FCS itnim state machine events |
| 55 | */ |
| 56 | |
| 57 | enum bfa_fcs_itnim_event { |
| 58 | BFA_FCS_ITNIM_SM_ONLINE = 1, /* rport online event */ |
| 59 | BFA_FCS_ITNIM_SM_OFFLINE = 2, /* rport offline */ |
| 60 | BFA_FCS_ITNIM_SM_FRMSENT = 3, /* prli frame is sent */ |
| 61 | BFA_FCS_ITNIM_SM_RSP_OK = 4, /* good response */ |
| 62 | BFA_FCS_ITNIM_SM_RSP_ERROR = 5, /* error response */ |
| 63 | BFA_FCS_ITNIM_SM_TIMEOUT = 6, /* delay timeout */ |
| 64 | BFA_FCS_ITNIM_SM_HCB_OFFLINE = 7, /* BFA online callback */ |
| 65 | BFA_FCS_ITNIM_SM_HCB_ONLINE = 8, /* BFA offline callback */ |
| 66 | BFA_FCS_ITNIM_SM_INITIATOR = 9, /* rport is initiator */ |
| 67 | BFA_FCS_ITNIM_SM_DELETE = 10, /* delete event from rport */ |
| 68 | BFA_FCS_ITNIM_SM_PRLO = 11, /* delete event from rport */ |
| 69 | }; |
| 70 | |
| 71 | static void bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim, |
| 72 | enum bfa_fcs_itnim_event event); |
| 73 | static void bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim, |
| 74 | enum bfa_fcs_itnim_event event); |
| 75 | static void bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim, |
| 76 | enum bfa_fcs_itnim_event event); |
| 77 | static void bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim, |
| 78 | enum bfa_fcs_itnim_event event); |
| 79 | static void bfa_fcs_itnim_sm_hcb_online(struct bfa_fcs_itnim_s *itnim, |
| 80 | enum bfa_fcs_itnim_event event); |
| 81 | static void bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim, |
| 82 | enum bfa_fcs_itnim_event event); |
| 83 | static void bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim, |
| 84 | enum bfa_fcs_itnim_event event); |
| 85 | static void bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim, |
| 86 | enum bfa_fcs_itnim_event event); |
| 87 | |
| 88 | static struct bfa_sm_table_s itnim_sm_table[] = { |
| 89 | {BFA_SM(bfa_fcs_itnim_sm_offline), BFA_ITNIM_OFFLINE}, |
| 90 | {BFA_SM(bfa_fcs_itnim_sm_prli_send), BFA_ITNIM_PRLI_SEND}, |
| 91 | {BFA_SM(bfa_fcs_itnim_sm_prli), BFA_ITNIM_PRLI_SENT}, |
| 92 | {BFA_SM(bfa_fcs_itnim_sm_prli_retry), BFA_ITNIM_PRLI_RETRY}, |
| 93 | {BFA_SM(bfa_fcs_itnim_sm_hcb_online), BFA_ITNIM_HCB_ONLINE}, |
| 94 | {BFA_SM(bfa_fcs_itnim_sm_online), BFA_ITNIM_ONLINE}, |
| 95 | {BFA_SM(bfa_fcs_itnim_sm_hcb_offline), BFA_ITNIM_HCB_OFFLINE}, |
| 96 | {BFA_SM(bfa_fcs_itnim_sm_initiator), BFA_ITNIM_INITIATIOR}, |
| 97 | }; |
| 98 | |
| 99 | /** |
| 100 | * fcs_itnim_sm FCS itnim state machine |
| 101 | */ |
| 102 | |
| 103 | static void |
| 104 | bfa_fcs_itnim_sm_offline(struct bfa_fcs_itnim_s *itnim, |
| 105 | enum bfa_fcs_itnim_event event) |
| 106 | { |
| 107 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 108 | bfa_trc(itnim->fcs, event); |
| 109 | |
| 110 | switch (event) { |
| 111 | case BFA_FCS_ITNIM_SM_ONLINE: |
| 112 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send); |
| 113 | bfa_fcs_itnim_send_prli(itnim, NULL); |
| 114 | break; |
| 115 | |
| 116 | case BFA_FCS_ITNIM_SM_OFFLINE: |
| 117 | bfa_fcs_rport_itnim_ack(itnim->rport); |
| 118 | break; |
| 119 | |
| 120 | case BFA_FCS_ITNIM_SM_INITIATOR: |
| 121 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator); |
| 122 | break; |
| 123 | |
| 124 | case BFA_FCS_ITNIM_SM_DELETE: |
| 125 | bfa_fcs_itnim_free(itnim); |
| 126 | break; |
| 127 | |
| 128 | default: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame^] | 129 | bfa_sm_fault(itnim->fcs, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 130 | } |
| 131 | |
| 132 | } |
| 133 | |
| 134 | static void |
| 135 | bfa_fcs_itnim_sm_prli_send(struct bfa_fcs_itnim_s *itnim, |
| 136 | enum bfa_fcs_itnim_event event) |
| 137 | { |
| 138 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 139 | bfa_trc(itnim->fcs, event); |
| 140 | |
| 141 | switch (event) { |
| 142 | case BFA_FCS_ITNIM_SM_FRMSENT: |
| 143 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli); |
| 144 | break; |
| 145 | |
| 146 | case BFA_FCS_ITNIM_SM_INITIATOR: |
| 147 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator); |
| 148 | bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe); |
| 149 | break; |
| 150 | |
| 151 | case BFA_FCS_ITNIM_SM_OFFLINE: |
| 152 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 153 | bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe); |
| 154 | bfa_fcs_rport_itnim_ack(itnim->rport); |
| 155 | break; |
| 156 | |
| 157 | case BFA_FCS_ITNIM_SM_DELETE: |
| 158 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 159 | bfa_fcxp_walloc_cancel(itnim->fcs->bfa, &itnim->fcxp_wqe); |
| 160 | bfa_fcs_itnim_free(itnim); |
| 161 | break; |
| 162 | |
| 163 | default: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame^] | 164 | bfa_sm_fault(itnim->fcs, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 165 | } |
| 166 | } |
| 167 | |
| 168 | static void |
| 169 | bfa_fcs_itnim_sm_prli(struct bfa_fcs_itnim_s *itnim, |
| 170 | enum bfa_fcs_itnim_event event) |
| 171 | { |
| 172 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 173 | bfa_trc(itnim->fcs, event); |
| 174 | |
| 175 | switch (event) { |
| 176 | case BFA_FCS_ITNIM_SM_RSP_OK: |
| 177 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_online); |
| 178 | bfa_itnim_online(itnim->bfa_itnim, itnim->seq_rec); |
| 179 | break; |
| 180 | |
| 181 | case BFA_FCS_ITNIM_SM_RSP_ERROR: |
| 182 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_retry); |
| 183 | bfa_timer_start(itnim->fcs->bfa, &itnim->timer, |
| 184 | bfa_fcs_itnim_timeout, itnim, |
| 185 | BFA_FCS_RETRY_TIMEOUT); |
| 186 | break; |
| 187 | |
| 188 | case BFA_FCS_ITNIM_SM_OFFLINE: |
| 189 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 190 | bfa_fcxp_discard(itnim->fcxp); |
| 191 | bfa_fcs_rport_itnim_ack(itnim->rport); |
| 192 | break; |
| 193 | |
| 194 | case BFA_FCS_ITNIM_SM_INITIATOR: |
| 195 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_initiator); |
| 196 | /* |
| 197 | * dont discard fcxp. accept will reach same state |
| 198 | */ |
| 199 | break; |
| 200 | |
| 201 | case BFA_FCS_ITNIM_SM_DELETE: |
| 202 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 203 | bfa_fcxp_discard(itnim->fcxp); |
| 204 | bfa_fcs_itnim_free(itnim); |
| 205 | break; |
| 206 | |
| 207 | default: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame^] | 208 | bfa_sm_fault(itnim->fcs, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 209 | } |
| 210 | } |
| 211 | |
| 212 | static void |
| 213 | bfa_fcs_itnim_sm_prli_retry(struct bfa_fcs_itnim_s *itnim, |
| 214 | enum bfa_fcs_itnim_event event) |
| 215 | { |
| 216 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 217 | bfa_trc(itnim->fcs, event); |
| 218 | |
| 219 | switch (event) { |
| 220 | case BFA_FCS_ITNIM_SM_TIMEOUT: |
| 221 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_prli_send); |
| 222 | bfa_fcs_itnim_send_prli(itnim, NULL); |
| 223 | break; |
| 224 | |
| 225 | case BFA_FCS_ITNIM_SM_OFFLINE: |
| 226 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 227 | bfa_timer_stop(&itnim->timer); |
| 228 | bfa_fcs_rport_itnim_ack(itnim->rport); |
| 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: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame^] | 243 | bfa_sm_fault(itnim->fcs, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 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 | { |
| 251 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 252 | bfa_trc(itnim->fcs, event); |
| 253 | |
| 254 | switch (event) { |
| 255 | case BFA_FCS_ITNIM_SM_HCB_ONLINE: |
| 256 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_online); |
| 257 | bfa_fcb_itnim_online(itnim->itnim_drv); |
| 258 | bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_ONLINE); |
| 259 | break; |
| 260 | |
| 261 | case BFA_FCS_ITNIM_SM_OFFLINE: |
| 262 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 263 | bfa_itnim_offline(itnim->bfa_itnim); |
| 264 | bfa_fcs_rport_itnim_ack(itnim->rport); |
| 265 | break; |
| 266 | |
| 267 | case BFA_FCS_ITNIM_SM_DELETE: |
| 268 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 269 | bfa_fcs_itnim_free(itnim); |
| 270 | break; |
| 271 | |
| 272 | default: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame^] | 273 | bfa_sm_fault(itnim->fcs, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 274 | } |
| 275 | } |
| 276 | |
| 277 | static void |
| 278 | bfa_fcs_itnim_sm_online(struct bfa_fcs_itnim_s *itnim, |
| 279 | enum bfa_fcs_itnim_event event) |
| 280 | { |
| 281 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 282 | bfa_trc(itnim->fcs, event); |
| 283 | |
| 284 | switch (event) { |
| 285 | case BFA_FCS_ITNIM_SM_OFFLINE: |
| 286 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_hcb_offline); |
| 287 | bfa_fcb_itnim_offline(itnim->itnim_drv); |
| 288 | bfa_itnim_offline(itnim->bfa_itnim); |
Jing Huang | f8ceafd | 2009-09-25 12:29:54 -0700 | [diff] [blame] | 289 | if (bfa_fcs_port_is_online(itnim->rport->port) == BFA_TRUE) |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 290 | bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_DISCONNECT); |
Jing Huang | f8ceafd | 2009-09-25 12:29:54 -0700 | [diff] [blame] | 291 | else |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 292 | bfa_fcs_itnim_aen_post(itnim, BFA_ITNIM_AEN_OFFLINE); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 293 | break; |
| 294 | |
| 295 | case BFA_FCS_ITNIM_SM_DELETE: |
| 296 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 297 | bfa_fcs_itnim_free(itnim); |
| 298 | break; |
| 299 | |
| 300 | default: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame^] | 301 | bfa_sm_fault(itnim->fcs, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 302 | } |
| 303 | } |
| 304 | |
| 305 | static void |
| 306 | bfa_fcs_itnim_sm_hcb_offline(struct bfa_fcs_itnim_s *itnim, |
| 307 | enum bfa_fcs_itnim_event event) |
| 308 | { |
| 309 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 310 | bfa_trc(itnim->fcs, event); |
| 311 | |
| 312 | switch (event) { |
| 313 | case BFA_FCS_ITNIM_SM_HCB_OFFLINE: |
| 314 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 315 | bfa_fcs_rport_itnim_ack(itnim->rport); |
| 316 | break; |
| 317 | |
| 318 | case BFA_FCS_ITNIM_SM_DELETE: |
| 319 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 320 | bfa_fcs_itnim_free(itnim); |
| 321 | break; |
| 322 | |
| 323 | default: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame^] | 324 | bfa_sm_fault(itnim->fcs, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 325 | } |
| 326 | } |
| 327 | |
| 328 | /* |
| 329 | * This state is set when a discovered rport is also in intiator mode. |
| 330 | * This ITN is marked as no_op and is not active and will not be truned into |
| 331 | * online state. |
| 332 | */ |
| 333 | static void |
| 334 | bfa_fcs_itnim_sm_initiator(struct bfa_fcs_itnim_s *itnim, |
| 335 | enum bfa_fcs_itnim_event event) |
| 336 | { |
| 337 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 338 | bfa_trc(itnim->fcs, event); |
| 339 | |
| 340 | switch (event) { |
| 341 | case BFA_FCS_ITNIM_SM_OFFLINE: |
| 342 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 343 | bfa_fcs_rport_itnim_ack(itnim->rport); |
| 344 | break; |
| 345 | |
| 346 | case BFA_FCS_ITNIM_SM_RSP_ERROR: |
| 347 | case BFA_FCS_ITNIM_SM_ONLINE: |
| 348 | case BFA_FCS_ITNIM_SM_INITIATOR: |
| 349 | break; |
| 350 | |
| 351 | case BFA_FCS_ITNIM_SM_DELETE: |
| 352 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 353 | bfa_fcs_itnim_free(itnim); |
| 354 | break; |
| 355 | |
| 356 | default: |
Krishna Gudipati | e641de3 | 2010-03-05 19:35:02 -0800 | [diff] [blame^] | 357 | bfa_sm_fault(itnim->fcs, event); |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 358 | } |
| 359 | } |
| 360 | |
| 361 | |
| 362 | |
| 363 | /** |
| 364 | * itnim_private FCS ITNIM private interfaces |
| 365 | */ |
| 366 | |
| 367 | static void |
| 368 | bfa_fcs_itnim_aen_post(struct bfa_fcs_itnim_s *itnim, |
| 369 | enum bfa_itnim_aen_event event) |
| 370 | { |
| 371 | struct bfa_fcs_rport_s *rport = itnim->rport; |
| 372 | union bfa_aen_data_u aen_data; |
| 373 | struct bfa_log_mod_s *logmod = rport->fcs->logm; |
| 374 | wwn_t lpwwn = bfa_fcs_port_get_pwwn(rport->port); |
| 375 | wwn_t rpwwn = rport->pwwn; |
| 376 | char lpwwn_ptr[BFA_STRING_32]; |
| 377 | char rpwwn_ptr[BFA_STRING_32]; |
| 378 | |
| 379 | /* |
| 380 | * Don't post events for well known addresses |
| 381 | */ |
| 382 | if (BFA_FCS_PID_IS_WKA(rport->pid)) |
| 383 | return; |
| 384 | |
| 385 | wwn2str(lpwwn_ptr, lpwwn); |
| 386 | wwn2str(rpwwn_ptr, rpwwn); |
| 387 | |
| 388 | switch (event) { |
| 389 | case BFA_ITNIM_AEN_ONLINE: |
| 390 | bfa_log(logmod, BFA_AEN_ITNIM_ONLINE, rpwwn_ptr, lpwwn_ptr); |
| 391 | break; |
| 392 | case BFA_ITNIM_AEN_OFFLINE: |
| 393 | bfa_log(logmod, BFA_AEN_ITNIM_OFFLINE, rpwwn_ptr, lpwwn_ptr); |
| 394 | break; |
| 395 | case BFA_ITNIM_AEN_DISCONNECT: |
| 396 | bfa_log(logmod, BFA_AEN_ITNIM_DISCONNECT, rpwwn_ptr, lpwwn_ptr); |
| 397 | break; |
| 398 | default: |
| 399 | break; |
| 400 | } |
| 401 | |
| 402 | aen_data.itnim.vf_id = rport->port->fabric->vf_id; |
| 403 | aen_data.itnim.ppwwn = |
| 404 | bfa_fcs_port_get_pwwn(bfa_fcs_get_base_port(itnim->fcs)); |
| 405 | aen_data.itnim.lpwwn = lpwwn; |
| 406 | aen_data.itnim.rpwwn = rpwwn; |
| 407 | } |
| 408 | |
| 409 | static void |
| 410 | bfa_fcs_itnim_send_prli(void *itnim_cbarg, struct bfa_fcxp_s *fcxp_alloced) |
| 411 | { |
| 412 | struct bfa_fcs_itnim_s *itnim = itnim_cbarg; |
| 413 | struct bfa_fcs_rport_s *rport = itnim->rport; |
| 414 | struct bfa_fcs_port_s *port = rport->port; |
| 415 | struct fchs_s fchs; |
| 416 | struct bfa_fcxp_s *fcxp; |
| 417 | int len; |
| 418 | |
| 419 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 420 | |
| 421 | fcxp = fcxp_alloced ? fcxp_alloced : bfa_fcs_fcxp_alloc(port->fcs); |
| 422 | if (!fcxp) { |
| 423 | itnim->stats.fcxp_alloc_wait++; |
| 424 | bfa_fcxp_alloc_wait(port->fcs->bfa, &itnim->fcxp_wqe, |
| 425 | bfa_fcs_itnim_send_prli, itnim); |
| 426 | return; |
| 427 | } |
| 428 | itnim->fcxp = fcxp; |
| 429 | |
| 430 | len = fc_prli_build(&fchs, bfa_fcxp_get_reqbuf(fcxp), itnim->rport->pid, |
| 431 | bfa_fcs_port_get_fcid(port), 0); |
| 432 | |
| 433 | bfa_fcxp_send(fcxp, rport->bfa_rport, port->fabric->vf_id, port->lp_tag, |
| 434 | BFA_FALSE, FC_CLASS_3, len, &fchs, |
| 435 | bfa_fcs_itnim_prli_response, (void *)itnim, FC_MAX_PDUSZ, |
| 436 | FC_RA_TOV); |
| 437 | |
| 438 | itnim->stats.prli_sent++; |
| 439 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_FRMSENT); |
| 440 | } |
| 441 | |
| 442 | static void |
| 443 | bfa_fcs_itnim_prli_response(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg, |
| 444 | bfa_status_t req_status, u32 rsp_len, |
| 445 | u32 resid_len, struct fchs_s *rsp_fchs) |
| 446 | { |
| 447 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cbarg; |
| 448 | struct fc_els_cmd_s *els_cmd; |
| 449 | struct fc_prli_s *prli_resp; |
| 450 | struct fc_ls_rjt_s *ls_rjt; |
| 451 | struct fc_prli_params_s *sparams; |
| 452 | |
| 453 | bfa_trc(itnim->fcs, req_status); |
| 454 | |
| 455 | /* |
| 456 | * Sanity Checks |
| 457 | */ |
| 458 | if (req_status != BFA_STATUS_OK) { |
| 459 | itnim->stats.prli_rsp_err++; |
| 460 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR); |
| 461 | return; |
| 462 | } |
| 463 | |
| 464 | els_cmd = (struct fc_els_cmd_s *) BFA_FCXP_RSP_PLD(fcxp); |
| 465 | |
| 466 | if (els_cmd->els_code == FC_ELS_ACC) { |
| 467 | prli_resp = (struct fc_prli_s *) els_cmd; |
| 468 | |
| 469 | if (fc_prli_rsp_parse(prli_resp, rsp_len) != FC_PARSE_OK) { |
| 470 | bfa_trc(itnim->fcs, rsp_len); |
| 471 | /* |
| 472 | * Check if this r-port is also in Initiator mode. |
| 473 | * If so, we need to set this ITN as a no-op. |
| 474 | */ |
| 475 | if (prli_resp->parampage.servparams.initiator) { |
| 476 | bfa_trc(itnim->fcs, prli_resp->parampage.type); |
| 477 | itnim->rport->scsi_function = |
| 478 | BFA_RPORT_INITIATOR; |
| 479 | itnim->stats.prli_rsp_acc++; |
| 480 | bfa_sm_send_event(itnim, |
| 481 | BFA_FCS_ITNIM_SM_INITIATOR); |
| 482 | return; |
| 483 | } |
| 484 | |
| 485 | itnim->stats.prli_rsp_parse_err++; |
| 486 | return; |
| 487 | } |
| 488 | itnim->rport->scsi_function = BFA_RPORT_TARGET; |
| 489 | |
| 490 | sparams = &prli_resp->parampage.servparams; |
| 491 | itnim->seq_rec = sparams->retry; |
| 492 | itnim->rec_support = sparams->rec_support; |
| 493 | itnim->task_retry_id = sparams->task_retry_id; |
| 494 | itnim->conf_comp = sparams->confirm; |
| 495 | |
| 496 | itnim->stats.prli_rsp_acc++; |
| 497 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_OK); |
| 498 | } else { |
| 499 | ls_rjt = (struct fc_ls_rjt_s *) BFA_FCXP_RSP_PLD(fcxp); |
| 500 | |
| 501 | bfa_trc(itnim->fcs, ls_rjt->reason_code); |
| 502 | bfa_trc(itnim->fcs, ls_rjt->reason_code_expl); |
| 503 | |
| 504 | itnim->stats.prli_rsp_rjt++; |
| 505 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_RSP_ERROR); |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | static void |
| 510 | bfa_fcs_itnim_timeout(void *arg) |
| 511 | { |
| 512 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)arg; |
| 513 | |
| 514 | itnim->stats.timeout++; |
| 515 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_TIMEOUT); |
| 516 | } |
| 517 | |
| 518 | static void |
| 519 | bfa_fcs_itnim_free(struct bfa_fcs_itnim_s *itnim) |
| 520 | { |
| 521 | bfa_itnim_delete(itnim->bfa_itnim); |
| 522 | bfa_fcb_itnim_free(itnim->fcs->bfad, itnim->itnim_drv); |
| 523 | } |
| 524 | |
| 525 | |
| 526 | |
| 527 | /** |
| 528 | * itnim_public FCS ITNIM public interfaces |
| 529 | */ |
| 530 | |
| 531 | /** |
| 532 | * Called by rport when a new rport is created. |
| 533 | * |
| 534 | * @param[in] rport - remote port. |
| 535 | */ |
| 536 | struct bfa_fcs_itnim_s * |
| 537 | bfa_fcs_itnim_create(struct bfa_fcs_rport_s *rport) |
| 538 | { |
| 539 | struct bfa_fcs_port_s *port = rport->port; |
| 540 | struct bfa_fcs_itnim_s *itnim; |
| 541 | struct bfad_itnim_s *itnim_drv; |
| 542 | struct bfa_itnim_s *bfa_itnim; |
| 543 | |
| 544 | /* |
| 545 | * call bfad to allocate the itnim |
| 546 | */ |
| 547 | bfa_fcb_itnim_alloc(port->fcs->bfad, &itnim, &itnim_drv); |
| 548 | if (itnim == NULL) { |
| 549 | bfa_trc(port->fcs, rport->pwwn); |
| 550 | return NULL; |
| 551 | } |
| 552 | |
| 553 | /* |
| 554 | * Initialize itnim |
| 555 | */ |
| 556 | itnim->rport = rport; |
| 557 | itnim->fcs = rport->fcs; |
| 558 | itnim->itnim_drv = itnim_drv; |
| 559 | |
| 560 | /* |
| 561 | * call BFA to create the itnim |
| 562 | */ |
| 563 | bfa_itnim = bfa_itnim_create(port->fcs->bfa, rport->bfa_rport, itnim); |
| 564 | |
| 565 | if (bfa_itnim == NULL) { |
| 566 | bfa_trc(port->fcs, rport->pwwn); |
| 567 | bfa_fcb_itnim_free(port->fcs->bfad, itnim_drv); |
| 568 | bfa_assert(0); |
| 569 | return NULL; |
| 570 | } |
| 571 | |
| 572 | itnim->bfa_itnim = bfa_itnim; |
| 573 | itnim->seq_rec = BFA_FALSE; |
| 574 | itnim->rec_support = BFA_FALSE; |
| 575 | itnim->conf_comp = BFA_FALSE; |
| 576 | itnim->task_retry_id = BFA_FALSE; |
| 577 | |
| 578 | /* |
| 579 | * Set State machine |
| 580 | */ |
| 581 | bfa_sm_set_state(itnim, bfa_fcs_itnim_sm_offline); |
| 582 | |
| 583 | return itnim; |
| 584 | } |
| 585 | |
| 586 | /** |
| 587 | * Called by rport to delete the instance of FCPIM. |
| 588 | * |
| 589 | * @param[in] rport - remote port. |
| 590 | */ |
| 591 | void |
| 592 | bfa_fcs_itnim_delete(struct bfa_fcs_itnim_s *itnim) |
| 593 | { |
| 594 | bfa_trc(itnim->fcs, itnim->rport->pid); |
| 595 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_DELETE); |
| 596 | } |
| 597 | |
| 598 | /** |
| 599 | * Notification from rport that PLOGI is complete to initiate FC-4 session. |
| 600 | */ |
| 601 | void |
| 602 | bfa_fcs_itnim_rport_online(struct bfa_fcs_itnim_s *itnim) |
| 603 | { |
| 604 | itnim->stats.onlines++; |
| 605 | |
| 606 | if (!BFA_FCS_PID_IS_WKA(itnim->rport->pid)) { |
| 607 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_ONLINE); |
| 608 | } else { |
| 609 | /* |
| 610 | * For well known addresses, we set the itnim to initiator |
| 611 | * state |
| 612 | */ |
| 613 | itnim->stats.initiator++; |
| 614 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR); |
| 615 | } |
| 616 | } |
| 617 | |
| 618 | /** |
| 619 | * Called by rport to handle a remote device offline. |
| 620 | */ |
| 621 | void |
| 622 | bfa_fcs_itnim_rport_offline(struct bfa_fcs_itnim_s *itnim) |
| 623 | { |
| 624 | itnim->stats.offlines++; |
| 625 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_OFFLINE); |
| 626 | } |
| 627 | |
| 628 | /** |
| 629 | * Called by rport when remote port is known to be an initiator from |
| 630 | * PRLI received. |
| 631 | */ |
| 632 | void |
| 633 | bfa_fcs_itnim_is_initiator(struct bfa_fcs_itnim_s *itnim) |
| 634 | { |
| 635 | bfa_trc(itnim->fcs, itnim->rport->pid); |
| 636 | itnim->stats.initiator++; |
| 637 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_INITIATOR); |
| 638 | } |
| 639 | |
| 640 | /** |
| 641 | * Called by rport to check if the itnim is online. |
| 642 | */ |
| 643 | bfa_status_t |
| 644 | bfa_fcs_itnim_get_online_state(struct bfa_fcs_itnim_s *itnim) |
| 645 | { |
| 646 | bfa_trc(itnim->fcs, itnim->rport->pid); |
| 647 | switch (bfa_sm_to_state(itnim_sm_table, itnim->sm)) { |
| 648 | case BFA_ITNIM_ONLINE: |
| 649 | case BFA_ITNIM_INITIATIOR: |
| 650 | return BFA_STATUS_OK; |
| 651 | |
| 652 | default: |
| 653 | return BFA_STATUS_NO_FCPIM_NEXUS; |
| 654 | |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * BFA completion callback for bfa_itnim_online(). |
| 660 | */ |
| 661 | void |
| 662 | bfa_cb_itnim_online(void *cbarg) |
| 663 | { |
| 664 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cbarg; |
| 665 | |
| 666 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 667 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_ONLINE); |
| 668 | } |
| 669 | |
| 670 | /** |
| 671 | * BFA completion callback for bfa_itnim_offline(). |
| 672 | */ |
| 673 | void |
| 674 | bfa_cb_itnim_offline(void *cb_arg) |
| 675 | { |
| 676 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg; |
| 677 | |
| 678 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 679 | bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_HCB_OFFLINE); |
| 680 | } |
| 681 | |
| 682 | /** |
| 683 | * Mark the beginning of PATH TOV handling. IO completion callbacks |
| 684 | * are still pending. |
| 685 | */ |
| 686 | void |
| 687 | bfa_cb_itnim_tov_begin(void *cb_arg) |
| 688 | { |
| 689 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg; |
| 690 | |
| 691 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 692 | bfa_fcb_itnim_tov_begin(itnim->itnim_drv); |
| 693 | } |
| 694 | |
| 695 | /** |
| 696 | * Mark the end of PATH TOV handling. All pending IOs are already cleaned up. |
| 697 | */ |
| 698 | void |
| 699 | bfa_cb_itnim_tov(void *cb_arg) |
| 700 | { |
| 701 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg; |
| 702 | |
| 703 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 704 | bfa_fcb_itnim_tov(itnim->itnim_drv); |
| 705 | } |
| 706 | |
| 707 | /** |
| 708 | * BFA notification to FCS/driver for second level error recovery. |
| 709 | * |
| 710 | * Atleast one I/O request has timedout and target is unresponsive to |
| 711 | * repeated abort requests. Second level error recovery should be initiated |
| 712 | * by starting implicit logout and recovery procedures. |
| 713 | */ |
| 714 | void |
| 715 | bfa_cb_itnim_sler(void *cb_arg) |
| 716 | { |
| 717 | struct bfa_fcs_itnim_s *itnim = (struct bfa_fcs_itnim_s *)cb_arg; |
| 718 | |
| 719 | itnim->stats.sler++; |
| 720 | bfa_trc(itnim->fcs, itnim->rport->pwwn); |
| 721 | bfa_fcs_rport_logo_imp(itnim->rport); |
| 722 | } |
| 723 | |
| 724 | struct bfa_fcs_itnim_s * |
| 725 | bfa_fcs_itnim_lookup(struct bfa_fcs_port_s *port, wwn_t rpwwn) |
| 726 | { |
| 727 | struct bfa_fcs_rport_s *rport; |
| 728 | rport = bfa_fcs_rport_lookup(port, rpwwn); |
| 729 | |
| 730 | if (!rport) |
| 731 | return NULL; |
| 732 | |
| 733 | bfa_assert(rport->itnim != NULL); |
Jing Huang | f8ceafd | 2009-09-25 12:29:54 -0700 | [diff] [blame] | 734 | return rport->itnim; |
Jing Huang | 7725ccf | 2009-09-23 17:46:15 -0700 | [diff] [blame] | 735 | } |
| 736 | |
| 737 | bfa_status_t |
| 738 | bfa_fcs_itnim_attr_get(struct bfa_fcs_port_s *port, wwn_t rpwwn, |
| 739 | struct bfa_itnim_attr_s *attr) |
| 740 | { |
| 741 | struct bfa_fcs_itnim_s *itnim = NULL; |
| 742 | |
| 743 | itnim = bfa_fcs_itnim_lookup(port, rpwwn); |
| 744 | |
| 745 | if (itnim == NULL) |
| 746 | return BFA_STATUS_NO_FCPIM_NEXUS; |
| 747 | |
| 748 | attr->state = bfa_sm_to_state(itnim_sm_table, itnim->sm); |
| 749 | attr->retry = itnim->seq_rec; |
| 750 | attr->rec_support = itnim->rec_support; |
| 751 | attr->conf_comp = itnim->conf_comp; |
| 752 | attr->task_retry_id = itnim->task_retry_id; |
| 753 | |
| 754 | return BFA_STATUS_OK; |
| 755 | } |
| 756 | |
| 757 | bfa_status_t |
| 758 | bfa_fcs_itnim_stats_get(struct bfa_fcs_port_s *port, wwn_t rpwwn, |
| 759 | struct bfa_itnim_stats_s *stats) |
| 760 | { |
| 761 | struct bfa_fcs_itnim_s *itnim = NULL; |
| 762 | |
| 763 | bfa_assert(port != NULL); |
| 764 | |
| 765 | itnim = bfa_fcs_itnim_lookup(port, rpwwn); |
| 766 | |
| 767 | if (itnim == NULL) |
| 768 | return BFA_STATUS_NO_FCPIM_NEXUS; |
| 769 | |
| 770 | bfa_os_memcpy(stats, &itnim->stats, sizeof(struct bfa_itnim_stats_s)); |
| 771 | |
| 772 | return BFA_STATUS_OK; |
| 773 | } |
| 774 | |
| 775 | bfa_status_t |
| 776 | bfa_fcs_itnim_stats_clear(struct bfa_fcs_port_s *port, wwn_t rpwwn) |
| 777 | { |
| 778 | struct bfa_fcs_itnim_s *itnim = NULL; |
| 779 | |
| 780 | bfa_assert(port != NULL); |
| 781 | |
| 782 | itnim = bfa_fcs_itnim_lookup(port, rpwwn); |
| 783 | |
| 784 | if (itnim == NULL) |
| 785 | return BFA_STATUS_NO_FCPIM_NEXUS; |
| 786 | |
| 787 | bfa_os_memset(&itnim->stats, 0, sizeof(struct bfa_itnim_stats_s)); |
| 788 | return BFA_STATUS_OK; |
| 789 | } |
| 790 | |
| 791 | void |
| 792 | bfa_fcs_fcpim_uf_recv(struct bfa_fcs_itnim_s *itnim, struct fchs_s *fchs, |
| 793 | u16 len) |
| 794 | { |
| 795 | struct fc_els_cmd_s *els_cmd; |
| 796 | |
| 797 | bfa_trc(itnim->fcs, fchs->type); |
| 798 | |
| 799 | if (fchs->type != FC_TYPE_ELS) |
| 800 | return; |
| 801 | |
| 802 | els_cmd = (struct fc_els_cmd_s *) (fchs + 1); |
| 803 | |
| 804 | bfa_trc(itnim->fcs, els_cmd->els_code); |
| 805 | |
| 806 | switch (els_cmd->els_code) { |
| 807 | case FC_ELS_PRLO: |
| 808 | /* bfa_sm_send_event(itnim, BFA_FCS_ITNIM_SM_PRLO); */ |
| 809 | break; |
| 810 | |
| 811 | default: |
| 812 | bfa_assert(0); |
| 813 | } |
| 814 | } |
| 815 | |
| 816 | void |
| 817 | bfa_fcs_itnim_pause(struct bfa_fcs_itnim_s *itnim) |
| 818 | { |
| 819 | } |
| 820 | |
| 821 | void |
| 822 | bfa_fcs_itnim_resume(struct bfa_fcs_itnim_s *itnim) |
| 823 | { |
| 824 | } |