1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * ibcm_impl.c 28 * 29 * contains internal functions of IB CM module. 30 * 31 * TBD: 32 * 1. HCA CATASTROPHIC/RECOVERED not handled yet 33 */ 34 35 #include <sys/ib/mgt/ibcm/ibcm_impl.h> 36 #include <sys/disp.h> 37 38 39 /* function prototypes */ 40 static ibcm_status_t ibcm_init(void); 41 static ibcm_status_t ibcm_fini(void); 42 43 /* Routines to initialize and destory CM global locks and CVs */ 44 static void ibcm_init_locks(void); 45 static void ibcm_fini_locks(void); 46 47 /* Routines that initialize/teardown CM's global hca structures */ 48 static void ibcm_init_hcas(); 49 static ibcm_status_t ibcm_fini_hcas(); 50 51 static void ibcm_init_classportinfo(); 52 static void ibcm_stop_timeout_thread(); 53 54 /* Routines that handle HCA attach/detach asyncs */ 55 static void ibcm_hca_attach(ib_guid_t); 56 static ibcm_status_t ibcm_hca_detach(ibcm_hca_info_t *); 57 58 /* Routines that initialize the HCA's port related fields */ 59 static ibt_status_t ibcm_hca_init_port(ibcm_hca_info_t *hcap, 60 uint8_t port_index); 61 static ibcm_status_t ibcm_hca_fini_port(ibcm_hca_info_t *hcap, 62 uint8_t port_index); 63 64 static void ibcm_rc_flow_control_init(void); 65 static void ibcm_rc_flow_control_fini(void); 66 67 /* 68 * Routines that check if hca's avl trees and sidr lists are free of any 69 * active client resources ie., RC or UD state structures in certain states 70 */ 71 static ibcm_status_t ibcm_check_avl_clean(ibcm_hca_info_t *hcap); 72 static ibcm_status_t ibcm_check_sidr_clean(ibcm_hca_info_t *hcap); 73 74 /* Add a new hca structure to CM's global hca list */ 75 static ibcm_hca_info_t *ibcm_add_hca_entry(ib_guid_t hcaguid, uint_t nports); 76 77 static void ibcm_comm_est_handler(ibt_async_event_t *); 78 void ibcm_async_handler(void *, ibt_hca_hdl_t, 79 ibt_async_code_t, ibt_async_event_t *); 80 81 /* Global variables */ 82 char cmlog[] = "ibcm"; /* for debug log messages */ 83 ibt_clnt_hdl_t ibcm_ibt_handle; /* IBT handle */ 84 kmutex_t ibcm_svc_info_lock; /* list lock */ 85 kcondvar_t ibcm_svc_info_cv; /* cv for deregister */ 86 kmutex_t ibcm_recv_mutex; 87 avl_tree_t ibcm_svc_avl_tree; 88 taskq_t *ibcm_taskq = NULL; 89 int taskq_dispatch_fail_cnt; 90 91 kmutex_t ibcm_trace_mutex; /* Trace mutex */ 92 kmutex_t ibcm_trace_print_mutex; /* Trace print mutex */ 93 int ibcm_conn_max_trcnt = IBCM_MAX_CONN_TRCNT; 94 95 int ibcm_enable_trace = 2; /* Trace level 4 by default */ 96 int ibcm_dtrace = 0; /* conditionally enable more dtrace */ 97 98 _NOTE(MUTEX_PROTECTS_DATA(ibcm_svc_info_lock, ibcm_svc_info_s::{svc_bind_list 99 svc_ref_cnt svc_to_delete})) 100 101 _NOTE(MUTEX_PROTECTS_DATA(ibcm_svc_info_lock, ibcm_svc_bind_s::{sbind_link})) 102 103 _NOTE(MUTEX_PROTECTS_DATA(ibcm_trace_mutex, ibcm_conn_trace_s)) 104 105 _NOTE(DATA_READABLE_WITHOUT_LOCK(ibcm_conn_trace_s)) 106 107 _NOTE(MUTEX_PROTECTS_DATA(ibcm_trace_print_mutex, ibcm_debug_buf)) 108 109 _NOTE(DATA_READABLE_WITHOUT_LOCK(ibcm_debug_buf)) 110 111 /* 112 * Initial state is INIT. All hca dr's return success immediately in this 113 * state, without adding or deleting any hca's to CM. 114 */ 115 ibcm_finit_state_t ibcm_finit_state = IBCM_FINIT_INIT; 116 117 /* mutex and cv to manage hca's reference and resource count(s) */ 118 kmutex_t ibcm_global_hca_lock; 119 kcondvar_t ibcm_global_hca_cv; 120 121 /* mutex and cv to sa session open */ 122 kmutex_t ibcm_sa_open_lock; 123 kcondvar_t ibcm_sa_open_cv; 124 int ibcm_sa_timeout_delay = 1; /* in ticks */ 125 _NOTE(MUTEX_PROTECTS_DATA(ibcm_sa_open_lock, 126 ibcm_port_info_s::{port_ibmf_saa_hdl port_saa_open_in_progress})) 127 128 _NOTE(DATA_READABLE_WITHOUT_LOCK(ibcm_port_info_s::{port_ibmf_saa_hdl})) 129 130 /* serialize sm notice callbacks */ 131 kmutex_t ibcm_sm_notice_serialize_lock; 132 133 _NOTE(LOCK_ORDER(ibcm_sm_notice_serialize_lock ibcm_global_hca_lock)) 134 135 _NOTE(MUTEX_PROTECTS_DATA(ibcm_global_hca_lock, ibcm_hca_info_s::{hca_state 136 hca_svc_cnt hca_acc_cnt hca_res_cnt hca_next})) 137 138 _NOTE(MUTEX_PROTECTS_DATA(ibcm_global_hca_lock, 139 ibcm_port_info_s::{port_ibmf_hdl})) 140 141 _NOTE(MUTEX_PROTECTS_DATA(ibcm_sm_notice_serialize_lock, 142 ibcm_port_info_s::{port_event_status})) 143 144 _NOTE(DATA_READABLE_WITHOUT_LOCK(ibcm_hca_info_s::{hca_state})) 145 _NOTE(DATA_READABLE_WITHOUT_LOCK( 146 ibcm_hca_info_s::{hca_port_info.port_ibmf_hdl})) 147 148 /* mutex for CM's qp list management */ 149 kmutex_t ibcm_qp_list_lock; 150 151 _NOTE(MUTEX_PROTECTS_DATA(ibcm_qp_list_lock, ibcm_port_info_s::{port_qplist})) 152 _NOTE(MUTEX_PROTECTS_DATA(ibcm_qp_list_lock, ibcm_qp_list_s)) 153 _NOTE(MUTEX_PROTECTS_DATA(ibcm_qp_list_lock, ibcm_qp_list_s)) 154 155 kcondvar_t ibcm_timeout_list_cv; 156 kcondvar_t ibcm_timeout_thread_done_cv; 157 kt_did_t ibcm_timeout_thread_did; 158 ibcm_state_data_t *ibcm_timeout_list_hdr, *ibcm_timeout_list_tail; 159 ibcm_ud_state_data_t *ibcm_ud_timeout_list_hdr, *ibcm_ud_timeout_list_tail; 160 kmutex_t ibcm_timeout_list_lock; 161 uint8_t ibcm_timeout_list_flags = 0; 162 pri_t ibcm_timeout_thread_pri = MINCLSYSPRI; 163 164 _NOTE(MUTEX_PROTECTS_DATA(ibcm_timeout_list_lock, 165 ibcm_state_data_s::timeout_next)) 166 167 _NOTE(MUTEX_PROTECTS_DATA(ibcm_timeout_list_lock, 168 ibcm_ud_state_data_s::ud_timeout_next)) 169 170 /* 171 * Flow control logic for open_rc_channel uses the following. 172 */ 173 174 struct ibcm_open_s { 175 kmutex_t mutex; 176 kcondvar_t cv; 177 uint8_t task_running; 178 uint_t queued; 179 uint_t exit_deferred; 180 uint_t in_progress; 181 uint_t in_progress_max; 182 uint_t sends; 183 uint_t sends_max; 184 uint_t sends_lowat; 185 uint_t sends_hiwat; 186 ibcm_state_data_t *tail; 187 ibcm_state_data_t head; 188 } ibcm_open; 189 190 static void ibcm_open_task(void *); 191 192 /* 193 * Flow control logic for SA access and close_rc_channel calls follows. 194 */ 195 196 int ibcm_close_simul_max = 12; 197 int ibcm_lapr_simul_max = 12; 198 int ibcm_saa_simul_max = 8; 199 200 typedef struct ibcm_flow1_s { 201 struct ibcm_flow1_s *link; 202 kcondvar_t cv; 203 uint8_t waiters; /* 1 to IBCM_FLOW_SIMUL_MAX */ 204 } ibcm_flow1_t; 205 206 typedef struct ibcm_flow_s { 207 ibcm_flow1_t *list; 208 uint_t simul; /* #requests currently outstanding */ 209 uint_t simul_max; 210 uint_t waiters_per_chunk; 211 uint_t lowat; 212 uint_t lowat_default; 213 /* statistics */ 214 uint_t total; 215 } ibcm_flow_t; 216 217 ibcm_flow_t ibcm_saa_flow; 218 ibcm_flow_t ibcm_close_flow; 219 ibcm_flow_t ibcm_lapr_flow; 220 221 /* NONBLOCKING close requests are queued */ 222 struct ibcm_close_s { 223 kmutex_t mutex; 224 ibcm_state_data_t *tail; 225 ibcm_state_data_t head; 226 } ibcm_close; 227 228 static ibt_clnt_modinfo_t ibcm_ibt_modinfo = { /* Client's modinfop */ 229 IBTI_V_CURR, 230 IBT_CM, 231 ibcm_async_handler, 232 NULL, 233 "IBCM" 234 }; 235 236 /* IBCM's list of HCAs registered with it */ 237 static ibcm_hca_info_t *ibcm_hca_listp = NULL; /* CM's HCA list */ 238 239 /* Array of CM state call table functions */ 240 ibcm_state_handler_t ibcm_sm_funcs_tbl[] = { 241 ibcm_process_req_msg, 242 ibcm_process_mra_msg, 243 ibcm_process_rej_msg, 244 ibcm_process_rep_msg, 245 ibcm_process_rtu_msg, 246 ibcm_process_dreq_msg, 247 ibcm_process_drep_msg, 248 ibcm_process_sidr_req_msg, 249 ibcm_process_sidr_rep_msg, 250 ibcm_process_lap_msg, 251 ibcm_process_apr_msg 252 }; 253 254 /* the following globals are CM tunables */ 255 ibt_rnr_nak_time_t ibcm_default_rnr_nak_time = IBT_RNR_NAK_655ms; 256 257 uint32_t ibcm_max_retries = IBCM_MAX_RETRIES; 258 clock_t ibcm_local_processing_time = IBCM_LOCAL_RESPONSE_TIME; 259 clock_t ibcm_remote_response_time = IBCM_REMOTE_RESPONSE_TIME; 260 ib_time_t ibcm_max_sidr_rep_proctime = IBCM_MAX_SIDR_PROCESS_TIME; 261 ib_time_t ibcm_max_sidr_pktlife_time = IBCM_MAX_SIDR_PKT_LIFE_TIME; 262 263 ib_time_t ibcm_max_sidr_rep_store_time = 18; 264 uint32_t ibcm_wait_for_acc_cnt_timeout = 2000000; /* 2 sec */ 265 uint32_t ibcm_wait_for_res_cnt_timeout = 2000000; /* 2 sec */ 266 267 ib_time_t ibcm_max_ib_pkt_lt = IBCM_MAX_IB_PKT_LT; 268 ib_time_t ibcm_max_ib_mad_pkt_lt = IBCM_MAX_IB_MAD_PKT_LT; 269 270 /* 271 * This delay accounts for time involved in various activities as follows : 272 * 273 * IBMF delays for posting the MADs in non-blocking mode 274 * IBMF delays for receiving the MADs and delivering to CM 275 * CM delays in processing the MADs before invoking client handlers, 276 * Any other delays associated with HCA driver in processing the MADs and 277 * other subsystems that CM may invoke (ex : SA, HCA driver) 278 */ 279 uint32_t ibcm_sw_delay = 1000; /* 1000us / 1ms */ 280 uint32_t ibcm_max_sa_retries = IBCM_MAX_SA_RETRIES + 1; 281 282 /* approx boot time */ 283 uint32_t ibcm_adj_btime = 4; /* 4 seconds */ 284 285 /* 286 * The information in ibcm_clpinfo is kept in wireformat and is setup at 287 * init time, and used read-only after that 288 */ 289 ibcm_classportinfo_msg_t ibcm_clpinfo; 290 291 char *event_str[] = { 292 "NEVER SEE THIS ", 293 "SESSION_ID ", 294 "CHAN_HDL ", 295 "LOCAL_COMID/HCA/PORT ", 296 "LOCAL_QPN ", 297 "REMOTE_COMID/HCA ", 298 "REMOTE_QPN ", 299 "BASE_TIME ", 300 "INCOMING_REQ ", 301 "INCOMING_REP ", 302 "INCOMING_RTU ", 303 "INCOMING_COMEST ", 304 "INCOMING_MRA ", 305 "INCOMING_REJ ", 306 "INCOMING_LAP ", 307 "INCOMING_APR ", 308 "INCOMING_DREQ ", 309 "INCOMING_DREP ", 310 "OUTGOING_REQ ", 311 "OUTGOING_REP ", 312 "OUTGOING_RTU ", 313 "OUTGOING_LAP ", 314 "OUTGOING_APR ", 315 "OUTGOING_MRA ", 316 "OUTGOING_REJ ", 317 "OUTGOING_DREQ ", 318 "OUTGOING_DREP ", 319 "REQ_POST_COMPLETE ", 320 "REP_POST_COMPLETE ", 321 "RTU_POST_COMPLETE ", 322 "MRA_POST_COMPLETE ", 323 "REJ_POST_COMPLETE ", 324 "LAP_POST_COMPLETE ", 325 "APR_POST_COMPLETE ", 326 "DREQ_POST_COMPLETE ", 327 "DREP_POST_COMPLETE ", 328 "TIMEOUT_REP ", 329 "CALLED_REQ_RCVD_EVENT ", 330 "RET_REQ_RCVD_EVENT ", 331 "CALLED_REP_RCVD_EVENT ", 332 "RET_REP_RCVD_EVENT ", 333 "CALLED_CONN_EST_EVENT ", 334 "RET_CONN_EST_EVENT ", 335 "CALLED_CONN_FAIL_EVENT ", 336 "RET_CONN_FAIL_EVENT ", 337 "CALLED_CONN_CLOSE_EVENT ", 338 "RET_CONN_CLOSE_EVENT ", 339 "INIT_INIT ", 340 "INIT_INIT_FAIL ", 341 "INIT_RTR ", 342 "INIT_RTR_FAIL ", 343 "RTR_RTS ", 344 "RTR_RTS_FAIL ", 345 "RTS_RTS ", 346 "RTS_RTS_FAIL ", 347 "TO_ERROR ", 348 "ERROR_FAIL ", 349 "SET_ALT ", 350 "SET_ALT_FAIL ", 351 "STALE_DETECT ", 352 "OUTGOING_REQ_RETRY ", 353 "OUTGOING_REP_RETRY ", 354 "OUTGOING_LAP_RETRY ", 355 "OUTGOING_MRA_RETRY ", 356 "OUTGOING_DREQ_RETRY ", 357 "NEVER SEE THIS " 358 }; 359 360 char ibcm_debug_buf[IBCM_DEBUG_BUF_SIZE]; 361 362 _NOTE(SCHEME_PROTECTS_DATA("used in a localized function consistently", 363 ibcm_debug_buf)) 364 _NOTE(READ_ONLY_DATA(ibcm_taskq)) 365 366 _NOTE(MUTEX_PROTECTS_DATA(ibcm_timeout_list_lock, ibcm_timeout_list_flags)) 367 _NOTE(MUTEX_PROTECTS_DATA(ibcm_timeout_list_lock, ibcm_timeout_list_hdr)) 368 _NOTE(MUTEX_PROTECTS_DATA(ibcm_timeout_list_lock, ibcm_ud_timeout_list_hdr)) 369 370 #ifdef DEBUG 371 int ibcm_test_mode = 0; /* set to 1, if running tests */ 372 #endif 373 374 375 /* Module Driver Info */ 376 static struct modlmisc ibcm_modlmisc = { 377 &mod_miscops, 378 "IB Communication Manager" 379 }; 380 381 /* Module Linkage */ 382 static struct modlinkage ibcm_modlinkage = { 383 MODREV_1, 384 &ibcm_modlmisc, 385 NULL 386 }; 387 388 389 int 390 _init(void) 391 { 392 int rval; 393 ibcm_status_t status; 394 395 status = ibcm_init(); 396 if (status != IBCM_SUCCESS) { 397 IBTF_DPRINTF_L2(cmlog, "_init: ibcm failed %d", status); 398 return (EINVAL); 399 } 400 401 rval = mod_install(&ibcm_modlinkage); 402 if (rval != 0) { 403 IBTF_DPRINTF_L2(cmlog, "_init: ibcm mod_install failed %d", 404 rval); 405 (void) ibcm_fini(); 406 } 407 408 IBTF_DPRINTF_L5(cmlog, "_init: ibcm successful"); 409 return (rval); 410 411 } 412 413 414 int 415 _info(struct modinfo *modinfop) 416 { 417 return (mod_info(&ibcm_modlinkage, modinfop)); 418 } 419 420 421 int 422 _fini(void) 423 { 424 int status; 425 426 if (ibcm_fini() != IBCM_SUCCESS) 427 return (EBUSY); 428 429 if ((status = mod_remove(&ibcm_modlinkage)) != 0) { 430 IBTF_DPRINTF_L2(cmlog, "_fini: ibcm mod_remove failed %d", 431 status); 432 return (status); 433 } 434 435 IBTF_DPRINTF_L5(cmlog, "_fini: ibcm successful"); 436 437 return (status); 438 } 439 440 /* Initializes all global mutex and CV in cm module */ 441 static void 442 ibcm_init_locks() 443 { 444 445 /* Verify CM MAD sizes */ 446 #ifdef DEBUG 447 448 if (ibcm_test_mode > 1) { 449 450 IBTF_DPRINTF_L1(cmlog, "REQ MAD SIZE %d", 451 sizeof (ibcm_req_msg_t)); 452 IBTF_DPRINTF_L1(cmlog, "REP MAD SIZE %d", 453 sizeof (ibcm_rep_msg_t)); 454 IBTF_DPRINTF_L1(cmlog, "RTU MAD SIZE %d", 455 sizeof (ibcm_rtu_msg_t)); 456 IBTF_DPRINTF_L1(cmlog, "MRA MAD SIZE %d", 457 sizeof (ibcm_mra_msg_t)); 458 IBTF_DPRINTF_L1(cmlog, "REJ MAD SIZE %d", 459 sizeof (ibcm_rej_msg_t)); 460 IBTF_DPRINTF_L1(cmlog, "LAP MAD SIZE %d", 461 sizeof (ibcm_lap_msg_t)); 462 IBTF_DPRINTF_L1(cmlog, "APR MAD SIZE %d", 463 sizeof (ibcm_apr_msg_t)); 464 IBTF_DPRINTF_L1(cmlog, "DREQ MAD SIZE %d", 465 sizeof (ibcm_dreq_msg_t)); 466 IBTF_DPRINTF_L1(cmlog, "DREP MAD SIZE %d", 467 sizeof (ibcm_drep_msg_t)); 468 IBTF_DPRINTF_L1(cmlog, "SIDR REQ MAD SIZE %d", 469 sizeof (ibcm_sidr_req_msg_t)); 470 IBTF_DPRINTF_L1(cmlog, "SIDR REP MAD SIZE %d", 471 sizeof (ibcm_sidr_rep_msg_t)); 472 } 473 474 #endif 475 476 /* Create all global locks within cm module */ 477 mutex_init(&ibcm_svc_info_lock, NULL, MUTEX_DEFAULT, NULL); 478 mutex_init(&ibcm_timeout_list_lock, NULL, MUTEX_DEFAULT, NULL); 479 mutex_init(&ibcm_global_hca_lock, NULL, MUTEX_DEFAULT, NULL); 480 mutex_init(&ibcm_sa_open_lock, NULL, MUTEX_DEFAULT, NULL); 481 mutex_init(&ibcm_recv_mutex, NULL, MUTEX_DEFAULT, NULL); 482 mutex_init(&ibcm_sm_notice_serialize_lock, NULL, MUTEX_DEFAULT, NULL); 483 mutex_init(&ibcm_qp_list_lock, NULL, MUTEX_DEFAULT, NULL); 484 mutex_init(&ibcm_trace_mutex, NULL, MUTEX_DEFAULT, NULL); 485 mutex_init(&ibcm_trace_print_mutex, NULL, MUTEX_DEFAULT, NULL); 486 cv_init(&ibcm_svc_info_cv, NULL, CV_DRIVER, NULL); 487 cv_init(&ibcm_timeout_list_cv, NULL, CV_DRIVER, NULL); 488 cv_init(&ibcm_timeout_thread_done_cv, NULL, CV_DRIVER, NULL); 489 cv_init(&ibcm_global_hca_cv, NULL, CV_DRIVER, NULL); 490 cv_init(&ibcm_sa_open_cv, NULL, CV_DRIVER, NULL); 491 avl_create(&ibcm_svc_avl_tree, ibcm_svc_compare, 492 sizeof (ibcm_svc_info_t), 493 offsetof(struct ibcm_svc_info_s, svc_link)); 494 495 IBTF_DPRINTF_L5(cmlog, "ibcm_init_locks: done"); 496 } 497 498 /* Destroys all global mutex and CV in cm module */ 499 static void 500 ibcm_fini_locks() 501 { 502 /* Destroy all global locks within cm module */ 503 mutex_destroy(&ibcm_svc_info_lock); 504 mutex_destroy(&ibcm_timeout_list_lock); 505 mutex_destroy(&ibcm_global_hca_lock); 506 mutex_destroy(&ibcm_sa_open_lock); 507 mutex_destroy(&ibcm_recv_mutex); 508 mutex_destroy(&ibcm_sm_notice_serialize_lock); 509 mutex_destroy(&ibcm_qp_list_lock); 510 mutex_destroy(&ibcm_trace_mutex); 511 mutex_destroy(&ibcm_trace_print_mutex); 512 cv_destroy(&ibcm_svc_info_cv); 513 cv_destroy(&ibcm_timeout_list_cv); 514 cv_destroy(&ibcm_timeout_thread_done_cv); 515 cv_destroy(&ibcm_global_hca_cv); 516 cv_destroy(&ibcm_sa_open_cv); 517 avl_destroy(&ibcm_svc_avl_tree); 518 519 IBTF_DPRINTF_L5(cmlog, "ibcm_fini_locks: done"); 520 } 521 522 523 /* Initialize CM's classport info */ 524 static void 525 ibcm_init_classportinfo() 526 { 527 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibcm_clpinfo)); 528 529 ibcm_clpinfo.BaseVersion = IBCM_MAD_BASE_VERSION; 530 ibcm_clpinfo.ClassVersion = IBCM_MAD_CLASS_VERSION; 531 532 /* For now, CM supports same capabilities at all ports */ 533 ibcm_clpinfo.CapabilityMask = 534 h2b16(IBCM_CPINFO_CAP_RC | IBCM_CPINFO_CAP_SIDR); 535 536 /* Bits 0-7 are all 0 for Communication Mgmt Class */ 537 538 /* For now, CM has the same respvalue at all ports */ 539 ibcm_clpinfo.RespTimeValue_plus = 540 h2b32(ibt_usec2ib(ibcm_local_processing_time) & 0x1f); 541 542 /* For now, redirect fields are set to 0 */ 543 /* Trap fields are not applicable to CM, hence set to 0 */ 544 545 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibcm_clpinfo)); 546 IBTF_DPRINTF_L5(cmlog, "ibcm_init_classportinfo: done"); 547 } 548 549 /* 550 * ibcm_init(): 551 * - call ibt_attach() 552 * - create AVL trees 553 * - Attach HCA handlers that are already present before 554 * CM got loaded. 555 * 556 * Arguments: NONE 557 * 558 * Return values: 559 * IBCM_SUCCESS - success 560 */ 561 static ibcm_status_t 562 ibcm_init(void) 563 { 564 ibt_status_t status; 565 kthread_t *t; 566 567 IBTF_DPRINTF_L3(cmlog, "ibcm_init:"); 568 569 ibcm_init_classportinfo(); 570 571 if (ibcm_init_ids() != IBCM_SUCCESS) { 572 IBTF_DPRINTF_L1(cmlog, "ibcm_init: " 573 "fatal error: vmem_create() failed"); 574 return (IBCM_FAILURE); 575 } 576 ibcm_init_locks(); 577 578 if (ibcm_ar_init() != IBCM_SUCCESS) { 579 IBTF_DPRINTF_L1(cmlog, "ibcm_init: " 580 "fatal error: ibcm_ar_init() failed"); 581 ibcm_fini_ids(); 582 ibcm_fini_locks(); 583 return (IBCM_FAILURE); 584 } 585 ibcm_rc_flow_control_init(); 586 587 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibcm_taskq)) 588 ibcm_taskq = system_taskq; 589 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibcm_taskq)) 590 591 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibcm_timeout_list_flags)) 592 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibcm_timeout_thread_did)) 593 594 /* Start the timeout list processing thread */ 595 ibcm_timeout_list_flags = 0; 596 t = thread_create(NULL, 0, ibcm_process_tlist, 0, 0, &p0, TS_RUN, 597 ibcm_timeout_thread_pri); 598 ibcm_timeout_thread_did = t->t_did; 599 600 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibcm_timeout_list_flags)) 601 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibcm_timeout_thread_did)) 602 603 /* 604 * NOTE : if ibt_attach is done after ibcm_init_hcas, then some 605 * HCA DR events may be lost. CM could call re-init hca list 606 * again, but it is more complicated. Some HCA's DR's lost may 607 * be HCA detach, which makes hca list re-syncing and locking more 608 * complex 609 */ 610 status = ibt_attach(&ibcm_ibt_modinfo, NULL, NULL, &ibcm_ibt_handle); 611 if (status != IBT_SUCCESS) { 612 IBTF_DPRINTF_L2(cmlog, "ibcm_init(): ibt_attach failed %d", 613 status); 614 (void) ibcm_ar_fini(); 615 ibcm_stop_timeout_thread(); 616 ibcm_fini_ids(); 617 ibcm_fini_locks(); 618 ibcm_rc_flow_control_fini(); 619 return (IBCM_FAILURE); 620 } 621 622 /* Block all HCA attach/detach asyncs */ 623 mutex_enter(&ibcm_global_hca_lock); 624 625 ibcm_init_hcas(); 626 ibcm_finit_state = IBCM_FINIT_IDLE; 627 628 ibcm_path_cache_init(); 629 630 /* Unblock any waiting HCA DR asyncs in CM */ 631 mutex_exit(&ibcm_global_hca_lock); 632 633 IBTF_DPRINTF_L4(cmlog, "ibcm_init: done"); 634 return (IBCM_SUCCESS); 635 } 636 637 /* Allocates and initializes the "per hca" global data in CM */ 638 static void 639 ibcm_init_hcas() 640 { 641 uint_t num_hcas = 0; 642 ib_guid_t *guid_array; 643 int i; 644 645 IBTF_DPRINTF_L5(cmlog, "ibcm_init_hcas:"); 646 647 /* Get the number of HCAs */ 648 num_hcas = ibt_get_hca_list(&guid_array); 649 IBTF_DPRINTF_L4(cmlog, "ibcm_init_hcas: ibt_get_hca_list() " 650 "returned %d hcas", num_hcas); 651 652 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 653 654 for (i = 0; i < num_hcas; i++) 655 ibcm_hca_attach(guid_array[i]); 656 657 if (num_hcas) 658 ibt_free_hca_list(guid_array, num_hcas); 659 660 IBTF_DPRINTF_L5(cmlog, "ibcm_init_hcas: done"); 661 } 662 663 664 /* 665 * ibcm_fini(): 666 * - Deregister w/ ibt 667 * - Cleanup IBCM HCA listp 668 * - Destroy mutexes 669 * 670 * Arguments: NONE 671 * 672 * Return values: 673 * IBCM_SUCCESS - success 674 */ 675 static ibcm_status_t 676 ibcm_fini(void) 677 { 678 ibt_status_t status; 679 680 IBTF_DPRINTF_L3(cmlog, "ibcm_fini:"); 681 682 /* 683 * CM assumes that the all general clients got rid of all the 684 * established connections and service registrations, completed all 685 * pending SIDR operations before a call to ibcm_fini() 686 */ 687 688 if (ibcm_ar_fini() != IBCM_SUCCESS) { 689 IBTF_DPRINTF_L2(cmlog, "ibcm_fini: ibcm_ar_fini failed"); 690 return (IBCM_FAILURE); 691 } 692 693 /* cleanup the svcinfo list */ 694 mutex_enter(&ibcm_svc_info_lock); 695 if (avl_first(&ibcm_svc_avl_tree) != NULL) { 696 IBTF_DPRINTF_L2(cmlog, "ibcm_fini: " 697 "ibcm_svc_avl_tree is not empty"); 698 mutex_exit(&ibcm_svc_info_lock); 699 return (IBCM_FAILURE); 700 } 701 mutex_exit(&ibcm_svc_info_lock); 702 703 /* disables any new hca attach/detaches */ 704 mutex_enter(&ibcm_global_hca_lock); 705 706 ibcm_finit_state = IBCM_FINIT_BUSY; 707 708 if (ibcm_fini_hcas() != IBCM_SUCCESS) { 709 IBTF_DPRINTF_L2(cmlog, "ibcm_fini: " 710 "some hca's still have client resources"); 711 712 /* First, re-initialize the hcas */ 713 ibcm_init_hcas(); 714 /* and then enable the HCA asyncs */ 715 ibcm_finit_state = IBCM_FINIT_IDLE; 716 mutex_exit(&ibcm_global_hca_lock); 717 if (ibcm_ar_init() != IBCM_SUCCESS) { 718 IBTF_DPRINTF_L1(cmlog, "ibcm_fini:ibcm_ar_init failed"); 719 } 720 return (IBCM_FAILURE); 721 } 722 723 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibcm_timeout_list_hdr)) 724 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(ibcm_ud_timeout_list_hdr)) 725 726 ASSERT(ibcm_timeout_list_hdr == NULL); 727 ASSERT(ibcm_ud_timeout_list_hdr == NULL); 728 729 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibcm_timeout_list_hdr)) 730 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(ibcm_ud_timeout_list_hdr)) 731 732 /* Release any pending asyncs on ibcm_global_hca_lock */ 733 ibcm_finit_state = IBCM_FINIT_SUCCESS; 734 mutex_exit(&ibcm_global_hca_lock); 735 736 ibcm_stop_timeout_thread(); 737 738 /* 739 * Detach from IBTL. Waits until all pending asyncs are complete. 740 * Above cv_broadcast wakes up any waiting hca attach/detach asyncs 741 */ 742 status = ibt_detach(ibcm_ibt_handle); 743 744 /* if detach fails, CM didn't free up some resources, so assert */ 745 if (status != IBT_SUCCESS) 746 IBTF_DPRINTF_L1(cmlog, "ibcm_fini: ibt_detach failed %d", 747 status); 748 749 ibcm_rc_flow_control_fini(); 750 751 ibcm_path_cache_fini(); 752 753 ibcm_fini_ids(); 754 ibcm_fini_locks(); 755 IBTF_DPRINTF_L3(cmlog, "ibcm_fini: done"); 756 return (IBCM_SUCCESS); 757 } 758 759 /* This routine exit's the ibcm timeout thread */ 760 static void 761 ibcm_stop_timeout_thread() 762 { 763 mutex_enter(&ibcm_timeout_list_lock); 764 765 /* Stop the timeout list processing thread */ 766 ibcm_timeout_list_flags = 767 ibcm_timeout_list_flags | IBCM_TIMEOUT_THREAD_EXIT; 768 769 /* Wake up, if the timeout thread is on a cv_wait */ 770 cv_signal(&ibcm_timeout_list_cv); 771 772 mutex_exit(&ibcm_timeout_list_lock); 773 thread_join(ibcm_timeout_thread_did); 774 775 IBTF_DPRINTF_L5(cmlog, "ibcm_stop_timeout_thread: done"); 776 } 777 778 779 /* Attempts to release all the hca's associated with CM */ 780 static ibcm_status_t 781 ibcm_fini_hcas() 782 { 783 ibcm_hca_info_t *hcap, *next; 784 785 IBTF_DPRINTF_L4(cmlog, "ibcm_fini_hcas:"); 786 787 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 788 789 hcap = ibcm_hca_listp; 790 while (hcap != NULL) { 791 next = hcap->hca_next; 792 if (ibcm_hca_detach(hcap) != IBCM_SUCCESS) { 793 ibcm_hca_listp = hcap; 794 return (IBCM_FAILURE); 795 } 796 hcap = next; 797 } 798 799 IBTF_DPRINTF_L4(cmlog, "ibcm_fini_hcas: SUCCEEDED"); 800 return (IBCM_SUCCESS); 801 } 802 803 804 /* 805 * ibcm_hca_attach(): 806 * Called as an asynchronous event to notify CM of an attach of HCA. 807 * Here ibcm_hca_info_t is initialized and all fields are 808 * filled in along with SA Access handles and IBMA handles. 809 * Also called from ibcm_init to initialize ibcm_hca_info_t's for each 810 * hca's 811 * 812 * Arguments: (WILL CHANGE BASED ON ASYNC EVENT CODE) 813 * hca_guid - HCA's guid 814 * 815 * Return values: NONE 816 */ 817 static void 818 ibcm_hca_attach(ib_guid_t hcaguid) 819 { 820 int i; 821 ibt_status_t status; 822 uint_t nports = 0; 823 ibcm_hca_info_t *hcap; 824 ibt_hca_attr_t hca_attrs; 825 826 IBTF_DPRINTF_L3(cmlog, "ibcm_hca_attach: guid = 0x%llX", hcaguid); 827 828 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 829 830 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*hcap)) 831 832 status = ibt_query_hca_byguid(hcaguid, &hca_attrs); 833 if (status != IBT_SUCCESS) { 834 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_attach: " 835 "ibt_query_hca_byguid failed = %d", status); 836 return; 837 } 838 nports = hca_attrs.hca_nports; 839 840 IBTF_DPRINTF_L4(cmlog, "ibcm_hca_attach: num ports = %x", nports); 841 842 if ((hcap = ibcm_add_hca_entry(hcaguid, nports)) == NULL) 843 return; 844 845 hcap->hca_guid = hcaguid; /* Set GUID */ 846 hcap->hca_num_ports = nports; /* Set number of ports */ 847 848 if (ibcm_init_hca_ids(hcap) != IBCM_SUCCESS) { 849 ibcm_delete_hca_entry(hcap); 850 return; 851 } 852 853 /* Store the static hca attribute data */ 854 hcap->hca_caps = hca_attrs.hca_flags; 855 hcap->hca_vendor_id = hca_attrs.hca_vendor_id; 856 hcap->hca_device_id = hca_attrs.hca_device_id; 857 hcap->hca_ack_delay = hca_attrs.hca_local_ack_delay; 858 hcap->hca_max_rdma_in_qp = hca_attrs.hca_max_rdma_in_qp; 859 hcap->hca_max_rdma_out_qp = hca_attrs.hca_max_rdma_out_qp; 860 861 /* loop thru nports and initialize IBMF handles */ 862 for (i = 0; i < hcap->hca_num_ports; i++) { 863 status = ibt_get_port_state_byguid(hcaguid, i + 1, NULL, NULL); 864 if (status != IBT_SUCCESS) { 865 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_attach: " 866 "port_num %d state DOWN", i + 1); 867 } 868 869 hcap->hca_port_info[i].port_hcap = hcap; 870 hcap->hca_port_info[i].port_num = i+1; 871 872 if (ibcm_hca_init_port(hcap, i) != IBT_SUCCESS) 873 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_attach: " 874 "ibcm_hca_init_port failed %d port_num %d", 875 status, i+1); 876 } 877 878 /* create the "active" CM AVL tree */ 879 avl_create(&hcap->hca_active_tree, ibcm_active_node_compare, 880 sizeof (ibcm_state_data_t), 881 offsetof(struct ibcm_state_data_s, avl_active_link)); 882 883 /* create the "passive" CM AVL tree */ 884 avl_create(&hcap->hca_passive_tree, ibcm_passive_node_compare, 885 sizeof (ibcm_state_data_t), 886 offsetof(struct ibcm_state_data_s, avl_passive_link)); 887 888 /* create the "passive comid" CM AVL tree */ 889 avl_create(&hcap->hca_passive_comid_tree, 890 ibcm_passive_comid_node_compare, 891 sizeof (ibcm_state_data_t), 892 offsetof(struct ibcm_state_data_s, avl_passive_comid_link)); 893 894 /* 895 * Mark the state of the HCA to "attach" only at the end 896 * Now CM starts accepting incoming MADs and client API calls 897 */ 898 hcap->hca_state = IBCM_HCA_ACTIVE; 899 900 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(*hcap)) 901 902 IBTF_DPRINTF_L3(cmlog, "ibcm_hca_attach: ATTACH Done"); 903 } 904 905 /* 906 * ibcm_hca_detach(): 907 * Called as an asynchronous event to notify CM of a detach of HCA. 908 * Here ibcm_hca_info_t is freed up and all fields that 909 * were initialized earlier are cleaned up 910 * 911 * Arguments: (WILL CHANGE BASED ON ASYNC EVENT CODE) 912 * hca_guid - HCA's guid 913 * 914 * Return values: 915 * IBCM_SUCCESS - able to detach HCA 916 * IBCM_FAILURE - failed to detach HCA 917 */ 918 static ibcm_status_t 919 ibcm_hca_detach(ibcm_hca_info_t *hcap) 920 { 921 int port_index, i; 922 ibcm_status_t status = IBCM_SUCCESS; 923 clock_t absolute_time; 924 925 IBTF_DPRINTF_L3(cmlog, "ibcm_hca_detach: hcap = 0x%p guid = 0x%llX", 926 hcap, hcap->hca_guid); 927 928 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 929 930 /* 931 * Declare hca is going away to all CM clients. Wait until the 932 * access count becomes zero. 933 */ 934 hcap->hca_state = IBCM_HCA_NOT_ACTIVE; 935 936 /* wait on response CV */ 937 absolute_time = ddi_get_lbolt() + 938 drv_usectohz(ibcm_wait_for_acc_cnt_timeout); 939 940 while (hcap->hca_acc_cnt > 0) 941 if (cv_timedwait(&ibcm_global_hca_cv, &ibcm_global_hca_lock, 942 absolute_time) == -1) 943 break; 944 945 if (hcap->hca_acc_cnt != 0) { 946 /* We got a timeout */ 947 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: Aborting due" 948 " to timeout on hca_acc_cnt %u, \n Some CM Clients are " 949 "still active, looks like we need to wait some more time " 950 "(ibcm_wait_for_acc_cnt_timeout).", hcap->hca_acc_cnt); 951 hcap->hca_state = IBCM_HCA_ACTIVE; 952 return (IBCM_FAILURE); 953 } 954 955 /* 956 * First make sure, there are no active users of ibma handles, 957 * and then de-register handles. 958 */ 959 960 /* make sure that there are no "Service"s registered w/ this HCA. */ 961 if (hcap->hca_svc_cnt != 0) { 962 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: " 963 "Active services still there %d", hcap->hca_svc_cnt); 964 hcap->hca_state = IBCM_HCA_ACTIVE; 965 return (IBCM_FAILURE); 966 } 967 968 if (ibcm_check_sidr_clean(hcap) != IBCM_SUCCESS) { 969 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach:" 970 "There are active SIDR operations"); 971 hcap->hca_state = IBCM_HCA_ACTIVE; 972 return (IBCM_FAILURE); 973 } 974 975 if (ibcm_check_avl_clean(hcap) != IBCM_SUCCESS) { 976 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: " 977 "There are active RC connections"); 978 hcap->hca_state = IBCM_HCA_ACTIVE; 979 return (IBCM_FAILURE); 980 } 981 982 /* 983 * Now, wait until all rc and sidr stateps go away 984 * All these stateps must be short lived ones, waiting to be cleaned 985 * up after some timeout value, based on the current state. 986 */ 987 IBTF_DPRINTF_L3(cmlog, "ibcm_hca_detach:hca_guid = 0x%llX res_cnt = %d", 988 hcap->hca_guid, hcap->hca_res_cnt); 989 990 while (hcap->hca_res_cnt > 0) 991 cv_wait(&ibcm_global_hca_cv, &ibcm_global_hca_lock); 992 993 if (hcap->hca_res_cnt != 0) { 994 /* We got a timeout waiting for hca_res_cnt to become 0 */ 995 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: Aborting due" 996 " to timeout on res_cnt %d, \n Some CM connections are " 997 "still in transient state, looks like we need to wait " 998 "some more time (ibcm_wait_for_res_cnt_timeout).", 999 hcap->hca_res_cnt); 1000 hcap->hca_state = IBCM_HCA_ACTIVE; 1001 return (IBCM_FAILURE); 1002 } 1003 1004 /* Re-assert the while loop step above */ 1005 ASSERT(hcap->hca_sidr_list == NULL); 1006 avl_destroy(&hcap->hca_active_tree); 1007 avl_destroy(&hcap->hca_passive_tree); 1008 avl_destroy(&hcap->hca_passive_comid_tree); 1009 1010 /* 1011 * Unregister all ports from IBMA 1012 * If there is a failure, re-initialize any free'd ibma handles. This 1013 * is required to receive the incoming mads 1014 */ 1015 status = IBCM_SUCCESS; 1016 for (port_index = 0; port_index < hcap->hca_num_ports; port_index++) { 1017 if ((status = ibcm_hca_fini_port(hcap, port_index)) != 1018 IBCM_SUCCESS) { 1019 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: " 1020 "Failed to free IBMA Handle for port_num %d", 1021 port_index + 1); 1022 break; 1023 } 1024 } 1025 1026 /* If detach fails, re-initialize ibma handles for incoming mads */ 1027 if (status != IBCM_SUCCESS) { 1028 for (i = 0; i < port_index; i++) { 1029 if (ibcm_hca_init_port(hcap, i) != IBT_SUCCESS) 1030 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: " 1031 "Failed to re-allocate IBMA Handles for" 1032 " port_num %d", port_index + 1); 1033 } 1034 hcap->hca_state = IBCM_HCA_ACTIVE; 1035 return (IBCM_FAILURE); 1036 } 1037 1038 ibcm_fini_hca_ids(hcap); 1039 ibcm_delete_hca_entry(hcap); 1040 1041 IBTF_DPRINTF_L3(cmlog, "ibcm_hca_detach: DETACH succeeded"); 1042 return (IBCM_SUCCESS); 1043 } 1044 1045 /* Checks, if there are any active sidr state entries in the specified hca */ 1046 static ibcm_status_t 1047 ibcm_check_sidr_clean(ibcm_hca_info_t *hcap) 1048 { 1049 ibcm_ud_state_data_t *usp; 1050 uint32_t transient_cnt = 0; 1051 1052 IBTF_DPRINTF_L5(cmlog, "ibcm_check_sidr_clean:"); 1053 1054 rw_enter(&hcap->hca_sidr_list_lock, RW_WRITER); 1055 usp = hcap->hca_sidr_list; /* Point to the list */ 1056 while (usp != NULL) { 1057 mutex_enter(&usp->ud_state_mutex); 1058 if ((usp->ud_state != IBCM_STATE_SIDR_REP_SENT) && 1059 (usp->ud_state != IBCM_STATE_TIMED_OUT) && 1060 (usp->ud_state != IBCM_STATE_DELETE)) { 1061 1062 IBTF_DPRINTF_L3(cmlog, "ibcm_check_sidr_clean:" 1063 "usp = %p not in transient state = %d", usp, 1064 usp->ud_state); 1065 1066 mutex_exit(&usp->ud_state_mutex); 1067 rw_exit(&hcap->hca_sidr_list_lock); 1068 return (IBCM_FAILURE); 1069 } else { 1070 mutex_exit(&usp->ud_state_mutex); 1071 ++transient_cnt; 1072 } 1073 1074 usp = usp->ud_nextp; 1075 } 1076 rw_exit(&hcap->hca_sidr_list_lock); 1077 1078 IBTF_DPRINTF_L4(cmlog, "ibcm_check_sidr_clean: transient_cnt %d", 1079 transient_cnt); 1080 1081 return (IBCM_SUCCESS); 1082 } 1083 1084 /* Checks, if there are any active rc state entries, in the specified hca */ 1085 static ibcm_status_t 1086 ibcm_check_avl_clean(ibcm_hca_info_t *hcap) 1087 1088 { 1089 ibcm_state_data_t *sp; 1090 avl_tree_t *avl_tree; 1091 uint32_t transient_cnt = 0; 1092 1093 IBTF_DPRINTF_L5(cmlog, "ibcm_check_avl_clean:"); 1094 /* 1095 * Both the trees ie., active and passive must reference to all 1096 * statep's, so let's use one 1097 */ 1098 avl_tree = &hcap->hca_active_tree; 1099 1100 rw_enter(&hcap->hca_state_rwlock, RW_WRITER); 1101 1102 for (sp = avl_first(avl_tree); sp != NULL; 1103 sp = avl_walk(avl_tree, sp, AVL_AFTER)) { 1104 mutex_enter(&sp->state_mutex); 1105 if ((sp->state != IBCM_STATE_TIMEWAIT) && 1106 (sp->state != IBCM_STATE_REJ_SENT) && 1107 (sp->state != IBCM_STATE_DELETE)) { 1108 IBTF_DPRINTF_L3(cmlog, "ibcm_check_avl_clean: " 1109 "sp = %p not in transient state = %d", sp, 1110 sp->state); 1111 mutex_exit(&sp->state_mutex); 1112 rw_exit(&hcap->hca_state_rwlock); 1113 return (IBCM_FAILURE); 1114 } else { 1115 mutex_exit(&sp->state_mutex); 1116 ++transient_cnt; 1117 } 1118 } 1119 1120 rw_exit(&hcap->hca_state_rwlock); 1121 1122 IBTF_DPRINTF_L4(cmlog, "ibcm_check_avl_clean: transient_cnt %d", 1123 transient_cnt); 1124 1125 return (IBCM_SUCCESS); 1126 } 1127 1128 /* Adds a new entry into CM's global hca list, if hca_guid is not there yet */ 1129 static ibcm_hca_info_t * 1130 ibcm_add_hca_entry(ib_guid_t hcaguid, uint_t nports) 1131 { 1132 ibcm_hca_info_t *hcap; 1133 1134 IBTF_DPRINTF_L5(cmlog, "ibcm_add_hca_entry: guid = 0x%llX", 1135 hcaguid); 1136 1137 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 1138 1139 /* 1140 * Check if this hca_guid already in the list 1141 * If yes, then ignore this and return NULL 1142 */ 1143 1144 hcap = ibcm_hca_listp; 1145 1146 /* search for this HCA */ 1147 while (hcap != NULL) { 1148 if (hcap->hca_guid == hcaguid) { 1149 /* already exists */ 1150 IBTF_DPRINTF_L2(cmlog, "ibcm_add_hca_entry: " 1151 "hcap %p guid 0x%llX, entry already exists !!", 1152 hcap, hcap->hca_guid); 1153 return (NULL); 1154 } 1155 hcap = hcap->hca_next; 1156 } 1157 1158 /* Allocate storage for the new HCA entry found */ 1159 hcap = kmem_zalloc(sizeof (ibcm_hca_info_t) + 1160 (nports - 1) * sizeof (ibcm_port_info_t), KM_SLEEP); 1161 1162 /* initialize RW lock */ 1163 rw_init(&hcap->hca_state_rwlock, NULL, RW_DRIVER, NULL); 1164 /* initialize SIDR list lock */ 1165 rw_init(&hcap->hca_sidr_list_lock, NULL, RW_DRIVER, NULL); 1166 /* Insert "hcap" into the global HCA list maintained by CM */ 1167 hcap->hca_next = ibcm_hca_listp; 1168 ibcm_hca_listp = hcap; 1169 1170 IBTF_DPRINTF_L5(cmlog, "ibcm_add_hca_entry: done hcap = 0x%p", hcap); 1171 1172 return (hcap); 1173 1174 } 1175 1176 /* deletes the given ibcm_hca_info_t from CM's global hca list */ 1177 void 1178 ibcm_delete_hca_entry(ibcm_hca_info_t *hcap) 1179 { 1180 ibcm_hca_info_t *headp, *prevp = NULL; 1181 1182 /* ibcm_hca_global_lock is held */ 1183 IBTF_DPRINTF_L5(cmlog, "ibcm_delete_hca_entry: guid = 0x%llX " 1184 "hcap = 0x%p", hcap->hca_guid, hcap); 1185 1186 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 1187 1188 headp = ibcm_hca_listp; 1189 while (headp != NULL) { 1190 if (headp == hcap) { 1191 IBTF_DPRINTF_L3(cmlog, "ibcm_delete_hca_entry: " 1192 "deleting hcap %p hcaguid %llX", hcap, 1193 hcap->hca_guid); 1194 if (prevp) { 1195 prevp->hca_next = headp->hca_next; 1196 } else { 1197 prevp = headp->hca_next; 1198 ibcm_hca_listp = prevp; 1199 } 1200 rw_destroy(&hcap->hca_state_rwlock); 1201 rw_destroy(&hcap->hca_sidr_list_lock); 1202 kmem_free(hcap, sizeof (ibcm_hca_info_t) + 1203 (hcap->hca_num_ports - 1) * 1204 sizeof (ibcm_port_info_t)); 1205 return; 1206 } 1207 1208 prevp = headp; 1209 headp = headp->hca_next; 1210 } 1211 } 1212 1213 /* 1214 * ibcm_find_hca_entry: 1215 * Given a HCA's GUID find out ibcm_hca_info_t entry for that HCA 1216 * This entry can be then used to access AVL tree/SIDR list etc. 1217 * If entry exists and in HCA ATTACH state, then hca's ref cnt is 1218 * incremented and entry returned. Else NULL returned. 1219 * 1220 * All functions that use ibcm_find_hca_entry and get a non-NULL 1221 * return values must call ibcm_dec_hca_acc_cnt to decrement the 1222 * respective hca ref cnt. There shouldn't be any usage of 1223 * ibcm_hca_info_t * returned from ibcm_find_hca_entry, 1224 * after decrementing the hca_acc_cnt 1225 * 1226 * INPUTS: 1227 * hca_guid - HCA's guid 1228 * 1229 * RETURN VALUE: 1230 * hcap - if a match is found, else NULL 1231 */ 1232 ibcm_hca_info_t * 1233 ibcm_find_hca_entry(ib_guid_t hca_guid) 1234 { 1235 ibcm_hca_info_t *hcap; 1236 1237 IBTF_DPRINTF_L5(cmlog, "ibcm_find_hca_entry: guid = 0x%llX", hca_guid); 1238 1239 mutex_enter(&ibcm_global_hca_lock); 1240 1241 hcap = ibcm_hca_listp; 1242 /* search for this HCA */ 1243 while (hcap != NULL) { 1244 if (hcap->hca_guid == hca_guid) 1245 break; 1246 hcap = hcap->hca_next; 1247 } 1248 1249 /* if no hcap for the hca_guid, return NULL */ 1250 if (hcap == NULL) { 1251 mutex_exit(&ibcm_global_hca_lock); 1252 return (NULL); 1253 } 1254 1255 /* return hcap, only if it valid to use */ 1256 if (hcap->hca_state == IBCM_HCA_ACTIVE) { 1257 ++(hcap->hca_acc_cnt); 1258 1259 IBTF_DPRINTF_L5(cmlog, "ibcm_find_hca_entry: " 1260 "found hcap = 0x%p hca_acc_cnt %u", hcap, 1261 hcap->hca_acc_cnt); 1262 1263 mutex_exit(&ibcm_global_hca_lock); 1264 return (hcap); 1265 } else { 1266 mutex_exit(&ibcm_global_hca_lock); 1267 1268 IBTF_DPRINTF_L2(cmlog, "ibcm_find_hca_entry: " 1269 "found hcap = 0x%p not in active state", hcap); 1270 return (NULL); 1271 } 1272 } 1273 1274 /* 1275 * Searches for ibcm_hca_info_t entry based on hca_guid, but doesn't increment 1276 * the hca's reference count. This function is used, where the calling context 1277 * is attempting to delete hcap itself and hence acc_cnt cannot be incremented 1278 * OR assumes that valid hcap must be available in ibcm's global hca list. 1279 */ 1280 ibcm_hca_info_t * 1281 ibcm_find_hcap_entry(ib_guid_t hca_guid) 1282 { 1283 ibcm_hca_info_t *hcap; 1284 1285 IBTF_DPRINTF_L5(cmlog, "ibcm_find_hcap_entry: guid = 0x%llX", hca_guid); 1286 1287 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 1288 1289 hcap = ibcm_hca_listp; 1290 /* search for this HCA */ 1291 while (hcap != NULL) { 1292 if (hcap->hca_guid == hca_guid) 1293 break; 1294 hcap = hcap->hca_next; 1295 } 1296 1297 if (hcap == NULL) 1298 IBTF_DPRINTF_L2(cmlog, "ibcm_find_hcap_entry: No hcap found for" 1299 " hca_guid 0x%llX", hca_guid); 1300 else 1301 IBTF_DPRINTF_L5(cmlog, "ibcm_find_hcap_entry: hcap found for" 1302 " hca_guid 0x%llX", hca_guid); 1303 1304 return (hcap); 1305 } 1306 1307 /* increment the hca's temporary reference count */ 1308 ibcm_status_t 1309 ibcm_inc_hca_acc_cnt(ibcm_hca_info_t *hcap) 1310 { 1311 mutex_enter(&ibcm_global_hca_lock); 1312 if (hcap->hca_state == IBCM_HCA_ACTIVE) { 1313 ++(hcap->hca_acc_cnt); 1314 IBTF_DPRINTF_L5(cmlog, "ibcm_inc_hca_acc_cnt: " 1315 "hcap = 0x%p acc_cnt = %d ", hcap, hcap->hca_acc_cnt); 1316 mutex_exit(&ibcm_global_hca_lock); 1317 return (IBCM_SUCCESS); 1318 } else { 1319 IBTF_DPRINTF_L2(cmlog, "ibcm_inc_hca_acc_cnt: " 1320 "hcap INACTIVE 0x%p acc_cnt = %d ", hcap, 1321 hcap->hca_acc_cnt); 1322 mutex_exit(&ibcm_global_hca_lock); 1323 return (IBCM_FAILURE); 1324 } 1325 } 1326 1327 /* decrement the hca's ref count, and wake up any waiting threads */ 1328 void 1329 ibcm_dec_hca_acc_cnt(ibcm_hca_info_t *hcap) 1330 { 1331 mutex_enter(&ibcm_global_hca_lock); 1332 ASSERT(hcap->hca_acc_cnt > 0); 1333 --(hcap->hca_acc_cnt); 1334 IBTF_DPRINTF_L5(cmlog, "ibcm_dec_hca_acc_cnt: hcap = 0x%p " 1335 "acc_cnt = %d", hcap, hcap->hca_acc_cnt); 1336 if ((hcap->hca_state == IBCM_HCA_NOT_ACTIVE) && 1337 (hcap->hca_acc_cnt == 0)) { 1338 IBTF_DPRINTF_L3(cmlog, "ibcm_dec_hca_acc_cnt: " 1339 "cv_broadcast for hcap = 0x%p", hcap); 1340 cv_broadcast(&ibcm_global_hca_cv); 1341 } 1342 mutex_exit(&ibcm_global_hca_lock); 1343 } 1344 1345 /* increment the hca's resource count */ 1346 void 1347 ibcm_inc_hca_res_cnt(ibcm_hca_info_t *hcap) 1348 1349 { 1350 mutex_enter(&ibcm_global_hca_lock); 1351 ++(hcap->hca_res_cnt); 1352 IBTF_DPRINTF_L5(cmlog, "ibcm_inc_hca_res_cnt: hcap = 0x%p " 1353 "ref_cnt = %d", hcap, hcap->hca_res_cnt); 1354 mutex_exit(&ibcm_global_hca_lock); 1355 } 1356 1357 /* decrement the hca's resource count, and wake up any waiting threads */ 1358 void 1359 ibcm_dec_hca_res_cnt(ibcm_hca_info_t *hcap) 1360 { 1361 mutex_enter(&ibcm_global_hca_lock); 1362 ASSERT(hcap->hca_res_cnt > 0); 1363 --(hcap->hca_res_cnt); 1364 IBTF_DPRINTF_L5(cmlog, "ibcm_dec_hca_res_cnt: hcap = 0x%p " 1365 "ref_cnt = %d", hcap, hcap->hca_res_cnt); 1366 if ((hcap->hca_state == IBCM_HCA_NOT_ACTIVE) && 1367 (hcap->hca_res_cnt == 0)) { 1368 IBTF_DPRINTF_L3(cmlog, "ibcm_dec_hca_res_cnt: " 1369 "cv_broadcast for hcap = 0x%p", hcap); 1370 cv_broadcast(&ibcm_global_hca_cv); 1371 } 1372 mutex_exit(&ibcm_global_hca_lock); 1373 } 1374 1375 /* increment the hca's service count */ 1376 void 1377 ibcm_inc_hca_svc_cnt(ibcm_hca_info_t *hcap) 1378 1379 { 1380 mutex_enter(&ibcm_global_hca_lock); 1381 ++(hcap->hca_svc_cnt); 1382 IBTF_DPRINTF_L5(cmlog, "ibcm_inc_hca_svc_cnt: hcap = 0x%p " 1383 "svc_cnt = %d", hcap, hcap->hca_svc_cnt); 1384 mutex_exit(&ibcm_global_hca_lock); 1385 } 1386 1387 /* decrement the hca's service count */ 1388 void 1389 ibcm_dec_hca_svc_cnt(ibcm_hca_info_t *hcap) 1390 { 1391 mutex_enter(&ibcm_global_hca_lock); 1392 ASSERT(hcap->hca_svc_cnt > 0); 1393 --(hcap->hca_svc_cnt); 1394 IBTF_DPRINTF_L5(cmlog, "ibcm_dec_hca_svc_cnt: hcap = 0x%p " 1395 "svc_cnt = %d", hcap, hcap->hca_svc_cnt); 1396 mutex_exit(&ibcm_global_hca_lock); 1397 } 1398 1399 /* 1400 * The following code manages three classes of requests that CM makes to 1401 * the fabric. Those three classes are SA_ACCESS, REQ/REP/RTU, and DREQ/DREP. 1402 * The main issue is that the fabric can become very busy, and the CM 1403 * protocols rely on responses being made based on a predefined timeout 1404 * value. By managing how many simultaneous sessions are allowed, there 1405 * is observed extremely high reliability of CM protocol succeeding when 1406 * it should. 1407 * 1408 * SA_ACCESS and DREQ/DREP are managed at the thread level, whereby the 1409 * thread blocks until there are less than some number of threads doing 1410 * similar requests. 1411 * 1412 * REQ/REP/RTU requests beyond a given limit are added to a list, 1413 * allowing the thread to return immediately to its caller in the 1414 * case where the "mode" is IBT_NONBLOCKING. This is the mode used 1415 * by uDAPL and seems to be an important feature/behavior. 1416 */ 1417 1418 static int 1419 ibcm_ok_to_start(struct ibcm_open_s *openp) 1420 { 1421 return (openp->sends < openp->sends_hiwat && 1422 openp->in_progress < openp->in_progress_max); 1423 } 1424 1425 void 1426 ibcm_open_done(ibcm_state_data_t *statep) 1427 { 1428 int run; 1429 ibcm_state_data_t **linkp, *tmp; 1430 1431 ASSERT(MUTEX_HELD(&statep->state_mutex)); 1432 if (statep->open_flow == 1) { 1433 statep->open_flow = 0; 1434 mutex_enter(&ibcm_open.mutex); 1435 if (statep->open_link == NULL) { 1436 ibcm_open.in_progress--; 1437 run = ibcm_ok_to_start(&ibcm_open); 1438 } else { 1439 ibcm_open.queued--; 1440 linkp = &ibcm_open.head.open_link; 1441 while (*linkp != statep) 1442 linkp = &((*linkp)->open_link); 1443 *linkp = statep->open_link; 1444 statep->open_link = NULL; 1445 /* 1446 * If we remove what tail pointed to, we need 1447 * to reassign tail (it is never NULL). 1448 * tail points to head for the empty list. 1449 */ 1450 if (ibcm_open.tail == statep) { 1451 tmp = &ibcm_open.head; 1452 while (tmp->open_link != &ibcm_open.head) 1453 tmp = tmp->open_link; 1454 ibcm_open.tail = tmp; 1455 } 1456 run = 0; 1457 } 1458 mutex_exit(&ibcm_open.mutex); 1459 if (run) 1460 ibcm_run_tlist_thread(); 1461 } 1462 } 1463 1464 /* dtrace */ 1465 void 1466 ibcm_open_wait(hrtime_t delta) 1467 { 1468 if (delta > 1000000) 1469 IBTF_DPRINTF_L2(cmlog, "ibcm_open_wait: flow more %lld", delta); 1470 } 1471 1472 void 1473 ibcm_open_start(ibcm_state_data_t *statep) 1474 { 1475 ibcm_insert_trace(statep, IBCM_TRACE_OUTGOING_REQ); 1476 1477 mutex_enter(&statep->state_mutex); 1478 ibcm_open_wait(gethrtime() - statep->post_time); 1479 mutex_exit(&statep->state_mutex); 1480 1481 ibcm_post_rc_mad(statep, statep->stored_msg, ibcm_post_req_complete, 1482 statep); 1483 1484 mutex_enter(&statep->state_mutex); 1485 IBCM_REF_CNT_DECR(statep); 1486 mutex_exit(&statep->state_mutex); 1487 } 1488 1489 void 1490 ibcm_open_enqueue(ibcm_state_data_t *statep) 1491 { 1492 int run; 1493 1494 mutex_enter(&statep->state_mutex); 1495 statep->post_time = gethrtime(); 1496 mutex_exit(&statep->state_mutex); 1497 mutex_enter(&ibcm_open.mutex); 1498 if (ibcm_open.queued == 0 && ibcm_ok_to_start(&ibcm_open)) { 1499 ibcm_open.in_progress++; 1500 mutex_exit(&ibcm_open.mutex); 1501 ibcm_open_start(statep); 1502 } else { 1503 ibcm_open.queued++; 1504 statep->open_link = &ibcm_open.head; 1505 ibcm_open.tail->open_link = statep; 1506 ibcm_open.tail = statep; 1507 run = ibcm_ok_to_start(&ibcm_open); 1508 mutex_exit(&ibcm_open.mutex); 1509 if (run) 1510 ibcm_run_tlist_thread(); 1511 } 1512 } 1513 1514 ibcm_state_data_t * 1515 ibcm_open_dequeue(void) 1516 { 1517 ibcm_state_data_t *statep; 1518 1519 ASSERT(MUTEX_HELD(&ibcm_open.mutex)); 1520 ibcm_open.queued--; 1521 ibcm_open.in_progress++; 1522 statep = ibcm_open.head.open_link; 1523 ibcm_open.head.open_link = statep->open_link; 1524 statep->open_link = NULL; 1525 /* 1526 * If we remove what tail pointed to, we need 1527 * to reassign tail (it is never NULL). 1528 * tail points to head for the empty list. 1529 */ 1530 if (ibcm_open.tail == statep) 1531 ibcm_open.tail = &ibcm_open.head; 1532 return (statep); 1533 } 1534 1535 void 1536 ibcm_check_for_opens(void) 1537 { 1538 ibcm_state_data_t *statep; 1539 1540 mutex_enter(&ibcm_open.mutex); 1541 1542 while (ibcm_open.queued > 0) { 1543 if (ibcm_ok_to_start(&ibcm_open)) { 1544 statep = ibcm_open_dequeue(); 1545 mutex_exit(&ibcm_open.mutex); 1546 1547 ibcm_open_start(statep); 1548 1549 mutex_enter(&ibcm_open.mutex); 1550 } else { 1551 break; 1552 } 1553 } 1554 mutex_exit(&ibcm_open.mutex); 1555 } 1556 1557 1558 static void 1559 ibcm_flow_init(ibcm_flow_t *flow, uint_t simul_max) 1560 { 1561 flow->list = NULL; 1562 flow->simul = 0; 1563 flow->waiters_per_chunk = 4; 1564 flow->simul_max = simul_max; 1565 flow->lowat = simul_max - flow->waiters_per_chunk; 1566 flow->lowat_default = flow->lowat; 1567 /* stats */ 1568 flow->total = 0; 1569 } 1570 1571 static void 1572 ibcm_rc_flow_control_init(void) 1573 { 1574 mutex_init(&ibcm_open.mutex, NULL, MUTEX_DEFAULT, NULL); 1575 mutex_enter(&ibcm_open.mutex); 1576 ibcm_flow_init(&ibcm_close_flow, ibcm_close_simul_max); 1577 ibcm_flow_init(&ibcm_lapr_flow, ibcm_lapr_simul_max); 1578 ibcm_flow_init(&ibcm_saa_flow, ibcm_saa_simul_max); 1579 1580 ibcm_open.queued = 0; 1581 ibcm_open.exit_deferred = 0; 1582 ibcm_open.in_progress = 0; 1583 ibcm_open.in_progress_max = 16; 1584 ibcm_open.sends = 0; 1585 ibcm_open.sends_max = 0; 1586 ibcm_open.sends_lowat = 8; 1587 ibcm_open.sends_hiwat = 16; 1588 ibcm_open.tail = &ibcm_open.head; 1589 ibcm_open.head.open_link = NULL; 1590 mutex_exit(&ibcm_open.mutex); 1591 1592 mutex_init(&ibcm_close.mutex, NULL, MUTEX_DEFAULT, NULL); 1593 mutex_enter(&ibcm_close.mutex); 1594 ibcm_close.tail = &ibcm_close.head; 1595 ibcm_close.head.close_link = NULL; 1596 mutex_exit(&ibcm_close.mutex); 1597 } 1598 1599 static void 1600 ibcm_rc_flow_control_fini(void) 1601 { 1602 mutex_destroy(&ibcm_open.mutex); 1603 mutex_destroy(&ibcm_close.mutex); 1604 } 1605 1606 static ibcm_flow1_t * 1607 ibcm_flow_find(ibcm_flow_t *flow) 1608 { 1609 ibcm_flow1_t *flow1; 1610 ibcm_flow1_t *f; 1611 1612 f = flow->list; 1613 if (f) { /* most likely code path */ 1614 while (f->link != NULL) 1615 f = f->link; 1616 if (f->waiters < flow->waiters_per_chunk) 1617 return (f); 1618 } 1619 1620 /* There was no flow1 list element ready for another waiter */ 1621 mutex_exit(&ibcm_open.mutex); 1622 flow1 = kmem_alloc(sizeof (*flow1), KM_SLEEP); 1623 mutex_enter(&ibcm_open.mutex); 1624 1625 f = flow->list; 1626 if (f) { 1627 while (f->link != NULL) 1628 f = f->link; 1629 if (f->waiters < flow->waiters_per_chunk) { 1630 kmem_free(flow1, sizeof (*flow1)); 1631 return (f); 1632 } 1633 f->link = flow1; 1634 } else { 1635 flow->list = flow1; 1636 } 1637 cv_init(&flow1->cv, NULL, CV_DRIVER, NULL); 1638 flow1->waiters = 0; 1639 flow1->link = NULL; 1640 return (flow1); 1641 } 1642 1643 static void 1644 ibcm_flow_enter(ibcm_flow_t *flow) 1645 { 1646 mutex_enter(&ibcm_open.mutex); 1647 if (flow->list == NULL && flow->simul < flow->simul_max) { 1648 flow->simul++; 1649 flow->total++; 1650 mutex_exit(&ibcm_open.mutex); 1651 } else { 1652 ibcm_flow1_t *flow1; 1653 1654 flow1 = ibcm_flow_find(flow); 1655 flow1->waiters++; 1656 cv_wait(&flow1->cv, &ibcm_open.mutex); 1657 if (--flow1->waiters == 0) { 1658 cv_destroy(&flow1->cv); 1659 mutex_exit(&ibcm_open.mutex); 1660 kmem_free(flow1, sizeof (*flow1)); 1661 } else 1662 mutex_exit(&ibcm_open.mutex); 1663 } 1664 } 1665 1666 static void 1667 ibcm_flow_exit(ibcm_flow_t *flow) 1668 { 1669 mutex_enter(&ibcm_open.mutex); 1670 if (--flow->simul < flow->lowat) { 1671 if (flow->lowat < flow->lowat_default) 1672 flow->lowat++; 1673 if (flow->list) { 1674 ibcm_flow1_t *flow1; 1675 1676 flow1 = flow->list; 1677 flow->list = flow1->link; /* unlink */ 1678 flow1->link = NULL; /* be clean */ 1679 flow->total += flow1->waiters; 1680 flow->simul += flow1->waiters; 1681 cv_broadcast(&flow1->cv); 1682 } 1683 } 1684 mutex_exit(&ibcm_open.mutex); 1685 } 1686 1687 void 1688 ibcm_flow_inc(void) 1689 { 1690 mutex_enter(&ibcm_open.mutex); 1691 if (++ibcm_open.sends > ibcm_open.sends_max) { 1692 ibcm_open.sends_max = ibcm_open.sends; 1693 IBTF_DPRINTF_L2(cmlog, "ibcm_flow_inc: sends max = %d", 1694 ibcm_open.sends_max); 1695 } 1696 mutex_exit(&ibcm_open.mutex); 1697 } 1698 1699 static void 1700 ibcm_check_send_cmpltn_time(hrtime_t delta, char *event_msg) 1701 { 1702 if (delta > 4000000LL) { 1703 IBTF_DPRINTF_L2(cmlog, "ibcm_check_send_cmpltn_time: " 1704 "%s: %lldns", event_msg, delta); 1705 } 1706 } 1707 1708 void 1709 ibcm_flow_dec(hrtime_t time, char *mad_type) 1710 { 1711 int flow_exit = 0; 1712 int run = 0; 1713 1714 if (ibcm_dtrace) 1715 ibcm_check_send_cmpltn_time(gethrtime() - time, mad_type); 1716 mutex_enter(&ibcm_open.mutex); 1717 ibcm_open.sends--; 1718 if (ibcm_open.sends < ibcm_open.sends_lowat) { 1719 run = ibcm_ok_to_start(&ibcm_open); 1720 if (ibcm_open.exit_deferred) { 1721 ibcm_open.exit_deferred--; 1722 flow_exit = 1; 1723 } 1724 } 1725 mutex_exit(&ibcm_open.mutex); 1726 if (flow_exit) 1727 ibcm_flow_exit(&ibcm_close_flow); 1728 if (run) 1729 ibcm_run_tlist_thread(); 1730 } 1731 1732 void 1733 ibcm_close_enqueue(ibcm_state_data_t *statep) 1734 { 1735 mutex_enter(&ibcm_close.mutex); 1736 statep->close_link = NULL; 1737 ibcm_close.tail->close_link = statep; 1738 ibcm_close.tail = statep; 1739 mutex_exit(&ibcm_close.mutex); 1740 ibcm_run_tlist_thread(); 1741 } 1742 1743 void 1744 ibcm_check_for_async_close() 1745 { 1746 ibcm_state_data_t *statep; 1747 1748 mutex_enter(&ibcm_close.mutex); 1749 1750 while (ibcm_close.head.close_link) { 1751 statep = ibcm_close.head.close_link; 1752 ibcm_close.head.close_link = statep->close_link; 1753 statep->close_link = NULL; 1754 if (ibcm_close.tail == statep) 1755 ibcm_close.tail = &ibcm_close.head; 1756 mutex_exit(&ibcm_close.mutex); 1757 ibcm_close_start(statep); 1758 mutex_enter(&ibcm_close.mutex); 1759 } 1760 mutex_exit(&ibcm_close.mutex); 1761 } 1762 1763 void 1764 ibcm_close_enter(void) 1765 { 1766 ibcm_flow_enter(&ibcm_close_flow); 1767 } 1768 1769 void 1770 ibcm_close_exit(void) 1771 { 1772 int flow_exit; 1773 1774 mutex_enter(&ibcm_open.mutex); 1775 if (ibcm_open.sends < ibcm_open.sends_lowat || 1776 ibcm_open.exit_deferred >= 4) 1777 flow_exit = 1; 1778 else { 1779 flow_exit = 0; 1780 ibcm_open.exit_deferred++; 1781 } 1782 mutex_exit(&ibcm_open.mutex); 1783 if (flow_exit) 1784 ibcm_flow_exit(&ibcm_close_flow); 1785 } 1786 1787 /* 1788 * This function needs to be called twice to finish our flow 1789 * control accounting when closing down a connection. One 1790 * call has send_done set to 1, while the other has it set to 0. 1791 * Because of retries, this could get called more than once 1792 * with either 0 or 1, but additional calls have no effect. 1793 */ 1794 void 1795 ibcm_close_done(ibcm_state_data_t *statep, int send_done) 1796 { 1797 int flow_exit; 1798 1799 ASSERT(MUTEX_HELD(&statep->state_mutex)); 1800 if (statep->close_flow == 1) { 1801 if (send_done) 1802 statep->close_flow = 3; 1803 else 1804 statep->close_flow = 2; 1805 } else if ((send_done && statep->close_flow == 2) || 1806 (!send_done && statep->close_flow == 3)) { 1807 statep->close_flow = 0; 1808 mutex_enter(&ibcm_open.mutex); 1809 if (ibcm_open.sends < ibcm_open.sends_lowat || 1810 ibcm_open.exit_deferred >= 4) 1811 flow_exit = 1; 1812 else { 1813 flow_exit = 0; 1814 ibcm_open.exit_deferred++; 1815 } 1816 mutex_exit(&ibcm_open.mutex); 1817 if (flow_exit) 1818 ibcm_flow_exit(&ibcm_close_flow); 1819 } 1820 } 1821 1822 void 1823 ibcm_lapr_enter(void) 1824 { 1825 ibcm_flow_enter(&ibcm_lapr_flow); 1826 } 1827 1828 void 1829 ibcm_lapr_exit(void) 1830 { 1831 ibcm_flow_exit(&ibcm_lapr_flow); 1832 } 1833 1834 void 1835 ibcm_sa_access_enter() 1836 { 1837 ibcm_flow_enter(&ibcm_saa_flow); 1838 } 1839 1840 void 1841 ibcm_sa_access_exit() 1842 { 1843 ibcm_flow_exit(&ibcm_saa_flow); 1844 } 1845 1846 static void 1847 ibcm_sm_notice_handler(ibmf_saa_handle_t saa_handle, 1848 ibmf_saa_subnet_event_t saa_event_code, 1849 ibmf_saa_event_details_t *saa_event_details, 1850 void *callback_arg) 1851 { 1852 ibcm_port_info_t *portp = (ibcm_port_info_t *)callback_arg; 1853 ibt_subnet_event_code_t code; 1854 ibt_subnet_event_t event; 1855 uint8_t event_status; 1856 1857 IBTF_DPRINTF_L3(cmlog, "ibcm_sm_notice_handler: saa_hdl %p, code = %d", 1858 saa_handle, saa_event_code); 1859 1860 mutex_enter(&ibcm_sm_notice_serialize_lock); 1861 1862 switch (saa_event_code) { 1863 case IBMF_SAA_EVENT_MCG_CREATED: 1864 code = IBT_SM_EVENT_MCG_CREATED; 1865 break; 1866 case IBMF_SAA_EVENT_MCG_DELETED: 1867 code = IBT_SM_EVENT_MCG_DELETED; 1868 break; 1869 case IBMF_SAA_EVENT_GID_AVAILABLE: 1870 code = IBT_SM_EVENT_GID_AVAIL; 1871 ibcm_path_cache_purge(); 1872 break; 1873 case IBMF_SAA_EVENT_GID_UNAVAILABLE: 1874 code = IBT_SM_EVENT_GID_UNAVAIL; 1875 ibcm_path_cache_purge(); 1876 break; 1877 case IBMF_SAA_EVENT_SUBSCRIBER_STATUS_CHG: 1878 event_status = 1879 saa_event_details->ie_producer_event_status_mask & 1880 IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM; 1881 if (event_status == (portp->port_event_status & 1882 IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM)) { 1883 mutex_exit(&ibcm_sm_notice_serialize_lock); 1884 return; /* no change */ 1885 } 1886 portp->port_event_status = event_status; 1887 if (event_status == IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM) 1888 code = IBT_SM_EVENT_AVAILABLE; 1889 else 1890 code = IBT_SM_EVENT_UNAVAILABLE; 1891 break; 1892 default: 1893 mutex_exit(&ibcm_sm_notice_serialize_lock); 1894 return; 1895 } 1896 1897 mutex_enter(&ibcm_global_hca_lock); 1898 1899 /* don't send the event if we're tearing down */ 1900 if (!IBCM_ACCESS_HCA_OK(portp->port_hcap)) { 1901 mutex_exit(&ibcm_global_hca_lock); 1902 mutex_exit(&ibcm_sm_notice_serialize_lock); 1903 return; 1904 } 1905 1906 ++(portp->port_hcap->hca_acc_cnt); 1907 mutex_exit(&ibcm_global_hca_lock); 1908 1909 event.sm_notice_gid = saa_event_details->ie_gid; 1910 ibtl_cm_sm_notice_handler(portp->port_sgid0, code, &event); 1911 1912 mutex_exit(&ibcm_sm_notice_serialize_lock); 1913 1914 ibcm_dec_hca_acc_cnt(portp->port_hcap); 1915 } 1916 1917 void 1918 ibt_register_subnet_notices(ibt_clnt_hdl_t ibt_hdl, 1919 ibt_sm_notice_handler_t sm_notice_handler, void *private) 1920 { 1921 ibcm_port_info_t *portp; 1922 ibcm_hca_info_t *hcap; 1923 uint8_t port; 1924 int num_failed_sgids; 1925 ibtl_cm_sm_init_fail_t *ifail; 1926 ib_gid_t *sgidp; 1927 1928 IBTF_DPRINTF_L3(cmlog, "ibt_register_subnet_notices: ibt_hdl = %p", 1929 ibt_hdl); 1930 1931 mutex_enter(&ibcm_sm_notice_serialize_lock); 1932 1933 ibtl_cm_set_sm_notice_handler(ibt_hdl, sm_notice_handler, private); 1934 if (sm_notice_handler == NULL) { 1935 mutex_exit(&ibcm_sm_notice_serialize_lock); 1936 return; 1937 } 1938 1939 /* for each port, if service is not available, make a call */ 1940 mutex_enter(&ibcm_global_hca_lock); 1941 num_failed_sgids = 0; 1942 hcap = ibcm_hca_listp; 1943 while (hcap != NULL) { 1944 portp = hcap->hca_port_info; 1945 for (port = 0; port < hcap->hca_num_ports; port++) { 1946 if (!(portp->port_event_status & 1947 IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM)) 1948 num_failed_sgids++; 1949 portp++; 1950 } 1951 hcap = hcap->hca_next; 1952 } 1953 if (num_failed_sgids != 0) { 1954 ifail = kmem_alloc(sizeof (*ifail) + 1955 (num_failed_sgids - 1) * sizeof (ib_gid_t), KM_SLEEP); 1956 ifail->smf_num_sgids = num_failed_sgids; 1957 ifail->smf_ibt_hdl = ibt_hdl; 1958 sgidp = &ifail->smf_sgid[0]; 1959 hcap = ibcm_hca_listp; 1960 while (hcap != NULL) { 1961 portp = hcap->hca_port_info; 1962 for (port = 0; port < hcap->hca_num_ports; port++) { 1963 if (!(portp->port_event_status & 1964 IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM)) 1965 *sgidp++ = portp->port_sgid0; 1966 portp++; 1967 } 1968 hcap = hcap->hca_next; 1969 } 1970 } 1971 mutex_exit(&ibcm_global_hca_lock); 1972 1973 if (num_failed_sgids != 0) { 1974 ibtl_cm_sm_notice_init_failure(ifail); 1975 kmem_free(ifail, sizeof (*ifail) + 1976 (num_failed_sgids - 1) * sizeof (ib_gid_t)); 1977 } 1978 mutex_exit(&ibcm_sm_notice_serialize_lock); 1979 } 1980 1981 /* The following is run from a taskq because we've seen the stack overflow. */ 1982 static void 1983 ibcm_init_saa(void *arg) 1984 { 1985 ibcm_port_info_t *portp = (ibcm_port_info_t *)arg; 1986 int status; 1987 ib_guid_t port_guid; 1988 ibmf_saa_subnet_event_args_t event_args; 1989 1990 port_guid = portp->port_sgid0.gid_guid; 1991 1992 IBTF_DPRINTF_L3(cmlog, "ibcm_init_saa: port guid %llX", port_guid); 1993 1994 event_args.is_event_callback_arg = portp; 1995 event_args.is_event_callback = ibcm_sm_notice_handler; 1996 1997 if ((status = ibmf_sa_session_open(port_guid, 0, &event_args, 1998 IBMF_VERSION, 0, &portp->port_ibmf_saa_hdl)) != IBMF_SUCCESS) { 1999 IBTF_DPRINTF_L2(cmlog, "ibcm_init_saa: " 2000 "ibmf_sa_session_open failed for port guid %llX " 2001 "status = %d", port_guid, status); 2002 } else { 2003 IBTF_DPRINTF_L2(cmlog, "ibcm_init_saa: " 2004 "registered sa_hdl 0x%p for port guid %llX", 2005 portp->port_ibmf_saa_hdl, port_guid); 2006 } 2007 2008 mutex_enter(&ibcm_sa_open_lock); 2009 portp->port_saa_open_in_progress = 0; 2010 cv_broadcast(&ibcm_sa_open_cv); 2011 mutex_exit(&ibcm_sa_open_lock); 2012 } 2013 2014 void 2015 ibcm_init_saa_handle(ibcm_hca_info_t *hcap, uint8_t port) 2016 { 2017 ibmf_saa_handle_t saa_handle; 2018 uint8_t port_index = port - 1; 2019 ibcm_port_info_t *portp = &hcap->hca_port_info[port_index]; 2020 ibt_status_t ibt_status; 2021 2022 if (port_index >= hcap->hca_num_ports) 2023 return; 2024 2025 mutex_enter(&ibcm_sa_open_lock); 2026 if (portp->port_saa_open_in_progress) { 2027 mutex_exit(&ibcm_sa_open_lock); 2028 return; 2029 } 2030 2031 saa_handle = portp->port_ibmf_saa_hdl; 2032 if (saa_handle != NULL) { 2033 mutex_exit(&ibcm_sa_open_lock); 2034 return; 2035 } 2036 2037 portp->port_saa_open_in_progress = 1; 2038 mutex_exit(&ibcm_sa_open_lock); 2039 2040 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(portp->port_event_status)) 2041 2042 /* The assumption is that we're getting event notifications */ 2043 portp->port_event_status = IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM; 2044 2045 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(portp->port_event_status)) 2046 2047 ibt_status = ibt_get_port_state_byguid(portp->port_hcap->hca_guid, 2048 portp->port_num, &portp->port_sgid0, NULL); 2049 if (ibt_status != IBT_SUCCESS) { 2050 IBTF_DPRINTF_L2(cmlog, "ibcm_init_saa_handle: " 2051 "ibt_get_port_state_byguid failed for guid %llX " 2052 "with status %d", portp->port_hcap->hca_guid, ibt_status); 2053 mutex_enter(&ibcm_sa_open_lock); 2054 portp->port_saa_open_in_progress = 0; 2055 cv_broadcast(&ibcm_sa_open_cv); 2056 mutex_exit(&ibcm_sa_open_lock); 2057 return; 2058 } 2059 /* if the port is UP, try sa_session_open */ 2060 (void) taskq_dispatch(ibcm_taskq, ibcm_init_saa, portp, TQ_SLEEP); 2061 } 2062 2063 2064 ibmf_saa_handle_t 2065 ibcm_get_saa_handle(ibcm_hca_info_t *hcap, uint8_t port) 2066 { 2067 ibmf_saa_handle_t saa_handle; 2068 uint8_t port_index = port - 1; 2069 ibcm_port_info_t *portp = &hcap->hca_port_info[port_index]; 2070 ibt_status_t ibt_status; 2071 2072 if (port_index >= hcap->hca_num_ports) 2073 return (NULL); 2074 2075 mutex_enter(&ibcm_sa_open_lock); 2076 while (portp->port_saa_open_in_progress) { 2077 cv_wait(&ibcm_sa_open_cv, &ibcm_sa_open_lock); 2078 } 2079 2080 saa_handle = portp->port_ibmf_saa_hdl; 2081 if (saa_handle != NULL) { 2082 mutex_exit(&ibcm_sa_open_lock); 2083 return (saa_handle); 2084 } 2085 2086 portp->port_saa_open_in_progress = 1; 2087 mutex_exit(&ibcm_sa_open_lock); 2088 2089 ibt_status = ibt_get_port_state_byguid(portp->port_hcap->hca_guid, 2090 portp->port_num, &portp->port_sgid0, NULL); 2091 if (ibt_status != IBT_SUCCESS) { 2092 IBTF_DPRINTF_L2(cmlog, "ibcm_get_saa_handle: " 2093 "ibt_get_port_state_byguid failed for guid %llX " 2094 "with status %d", portp->port_hcap->hca_guid, ibt_status); 2095 mutex_enter(&ibcm_sa_open_lock); 2096 portp->port_saa_open_in_progress = 0; 2097 cv_broadcast(&ibcm_sa_open_cv); 2098 mutex_exit(&ibcm_sa_open_lock); 2099 return (NULL); 2100 } 2101 /* if the port is UP, try sa_session_open */ 2102 (void) taskq_dispatch(ibcm_taskq, ibcm_init_saa, portp, TQ_SLEEP); 2103 2104 mutex_enter(&ibcm_sa_open_lock); 2105 while (portp->port_saa_open_in_progress) { 2106 cv_wait(&ibcm_sa_open_cv, &ibcm_sa_open_lock); 2107 } 2108 saa_handle = portp->port_ibmf_saa_hdl; 2109 mutex_exit(&ibcm_sa_open_lock); 2110 return (saa_handle); 2111 } 2112 2113 2114 /* 2115 * ibcm_hca_init_port(): 2116 * - Register port with IBMA 2117 * 2118 * Arguments: 2119 * hcap - HCA's guid 2120 * port_index - port number minus 1 2121 * 2122 * Return values: 2123 * IBCM_SUCCESS - success 2124 */ 2125 ibt_status_t 2126 ibcm_hca_init_port(ibcm_hca_info_t *hcap, uint8_t port_index) 2127 { 2128 int status; 2129 ibmf_register_info_t *ibmf_reg; 2130 2131 IBTF_DPRINTF_L4(cmlog, "ibcm_hca_init_port: hcap = 0x%p port_num %d", 2132 hcap, port_index + 1); 2133 2134 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 2135 2136 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(hcap->hca_port_info)) 2137 2138 if (hcap->hca_port_info[port_index].port_ibmf_hdl == NULL) { 2139 /* Register with IBMF */ 2140 ibmf_reg = &hcap->hca_port_info[port_index].port_ibmf_reg; 2141 ibmf_reg->ir_ci_guid = hcap->hca_guid; 2142 ibmf_reg->ir_port_num = port_index + 1; 2143 ibmf_reg->ir_client_class = COMM_MGT_MANAGER_AGENT; 2144 2145 /* 2146 * register with management framework 2147 */ 2148 status = ibmf_register(ibmf_reg, IBMF_VERSION, 2149 IBMF_REG_FLAG_NO_OFFLOAD, NULL, NULL, 2150 &(hcap->hca_port_info[port_index].port_ibmf_hdl), 2151 &(hcap->hca_port_info[port_index].port_ibmf_caps)); 2152 2153 if (status != IBMF_SUCCESS) { 2154 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_init_port: " 2155 "ibmf_register failed for port_num %x, " 2156 "status = %x", port_index + 1, status); 2157 return (ibcm_ibmf_analyze_error(status)); 2158 } 2159 2160 hcap->hca_port_info[port_index].port_qp1.qp_cm = 2161 IBMF_QP_HANDLE_DEFAULT; 2162 hcap->hca_port_info[port_index].port_qp1.qp_port = 2163 &(hcap->hca_port_info[port_index]); 2164 2165 /* 2166 * Register the read callback with IBMF. 2167 * Since we just did an ibmf_register, handle is 2168 * valid and ibcm_recv_cb() is valid so we can 2169 * safely assert for success of ibmf_setup_recv_cb() 2170 * 2171 * Depending on the "state" of the HCA, 2172 * CM may drop incoming packets 2173 */ 2174 status = ibmf_setup_async_cb( 2175 hcap->hca_port_info[port_index].port_ibmf_hdl, 2176 IBMF_QP_HANDLE_DEFAULT, ibcm_recv_cb, 2177 &(hcap->hca_port_info[port_index].port_qp1), 0); 2178 ASSERT(status == IBMF_SUCCESS); 2179 2180 IBTF_DPRINTF_L5(cmlog, "ibcm_hca_init_port: " 2181 "IBMF hdl[%x] = 0x%p", port_index, 2182 hcap->hca_port_info[port_index].port_ibmf_hdl); 2183 2184 /* Attempt to get the saa_handle for this port */ 2185 ibcm_init_saa_handle(hcap, port_index + 1); 2186 } 2187 2188 return (IBT_SUCCESS); 2189 } 2190 2191 /* 2192 * useful, to re attempt to initialize port ibma handles from elsewhere in 2193 * cm code 2194 */ 2195 ibt_status_t 2196 ibcm_hca_reinit_port(ibcm_hca_info_t *hcap, uint8_t port_index) 2197 { 2198 ibt_status_t status; 2199 2200 IBTF_DPRINTF_L5(cmlog, "ibcm_hca_reinit_port: hcap 0x%p port_num %d", 2201 hcap, port_index + 1); 2202 2203 mutex_enter(&ibcm_global_hca_lock); 2204 status = ibcm_hca_init_port(hcap, port_index); 2205 mutex_exit(&ibcm_global_hca_lock); 2206 return (status); 2207 } 2208 2209 2210 /* 2211 * ibcm_hca_fini_port(): 2212 * - Deregister port with IBMA 2213 * 2214 * Arguments: 2215 * hcap - HCA's guid 2216 * port_index - port number minus 1 2217 * 2218 * Return values: 2219 * IBCM_SUCCESS - success 2220 */ 2221 static ibcm_status_t 2222 ibcm_hca_fini_port(ibcm_hca_info_t *hcap, uint8_t port_index) 2223 { 2224 int ibmf_status; 2225 ibcm_status_t ibcm_status; 2226 2227 IBTF_DPRINTF_L4(cmlog, "ibcm_hca_fini_port: hcap = 0x%p port_num %d ", 2228 hcap, port_index + 1); 2229 2230 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 2231 2232 if (hcap->hca_port_info[port_index].port_ibmf_saa_hdl != NULL) { 2233 IBTF_DPRINTF_L5(cmlog, "ibcm_hca_fini_port: " 2234 "ibmf_sa_session_close IBMF SAA hdl %p", 2235 hcap->hca_port_info[port_index].port_ibmf_saa_hdl); 2236 2237 ibmf_status = ibmf_sa_session_close( 2238 &hcap->hca_port_info[port_index].port_ibmf_saa_hdl, 0); 2239 if (ibmf_status != IBMF_SUCCESS) { 2240 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_fini_port: " 2241 "ibmf_sa_session_close of port %d returned %x", 2242 port_index + 1, ibmf_status); 2243 return (IBCM_FAILURE); 2244 } 2245 } 2246 2247 if (hcap->hca_port_info[port_index].port_ibmf_hdl != NULL) { 2248 IBTF_DPRINTF_L5(cmlog, "ibcm_hca_fini_port: " 2249 "ibmf_unregister IBMF Hdl %p", 2250 hcap->hca_port_info[port_index].port_ibmf_hdl); 2251 2252 /* clean-up all the ibmf qp's allocated on this port */ 2253 ibcm_status = ibcm_free_allqps(hcap, port_index + 1); 2254 2255 if (ibcm_status != IBCM_SUCCESS) { 2256 2257 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_fini_port: " 2258 "ibcm_free_allqps failed for port_num %d", 2259 port_index + 1); 2260 return (IBCM_FAILURE); 2261 } 2262 2263 /* Tear down the receive callback */ 2264 ibmf_status = ibmf_tear_down_async_cb( 2265 hcap->hca_port_info[port_index].port_ibmf_hdl, 2266 IBMF_QP_HANDLE_DEFAULT, 0); 2267 2268 if (ibmf_status != IBMF_SUCCESS) { 2269 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_fini_port: " 2270 "ibmf_tear_down_async_cb failed %d port_num %d", 2271 ibmf_status, port_index + 1); 2272 return (IBCM_FAILURE); 2273 } 2274 2275 /* Now, unregister with IBMF */ 2276 ibmf_status = ibmf_unregister( 2277 &hcap->hca_port_info[port_index].port_ibmf_hdl, 0); 2278 IBTF_DPRINTF_L4(cmlog, "ibcm_hca_fini_port: " 2279 "ibmf_unregister of port_num %x returned %x", 2280 port_index + 1, ibmf_status); 2281 2282 if (ibmf_status == IBMF_SUCCESS) 2283 hcap->hca_port_info[port_index].port_ibmf_hdl = NULL; 2284 else { 2285 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_fini_port: " 2286 "ibmf_unregister failed %d port_num %d", 2287 ibmf_status, port_index + 1); 2288 return (IBCM_FAILURE); 2289 } 2290 } 2291 return (IBCM_SUCCESS); 2292 } 2293 2294 /* 2295 * ibcm_comm_est_handler(): 2296 * Check if the given channel is in ESTABLISHED state or not 2297 * 2298 * Arguments: 2299 * eventp - A pointer to an ibt_async_event_t struct 2300 * 2301 * Return values: NONE 2302 */ 2303 static void 2304 ibcm_comm_est_handler(ibt_async_event_t *eventp) 2305 { 2306 ibcm_state_data_t *statep; 2307 2308 IBTF_DPRINTF_L4(cmlog, "ibcm_comm_est_handler:"); 2309 2310 /* Both QP and EEC handles can't be NULL */ 2311 if (eventp->ev_chan_hdl == NULL) { 2312 IBTF_DPRINTF_L2(cmlog, "ibcm_comm_est_handler: " 2313 "both QP and EEC handles are NULL"); 2314 return; 2315 } 2316 2317 /* get the "statep" from qp/eec handles */ 2318 IBCM_GET_CHAN_PRIVATE(eventp->ev_chan_hdl, statep); 2319 if (statep == NULL) { 2320 IBTF_DPRINTF_L2(cmlog, "ibcm_comm_est_handler: statep is NULL"); 2321 return; 2322 } 2323 2324 mutex_enter(&statep->state_mutex); 2325 2326 IBCM_RELEASE_CHAN_PRIVATE(eventp->ev_chan_hdl); 2327 2328 IBTF_DPRINTF_L4(cmlog, "ibcm_comm_est_handler: statep = %p", statep); 2329 2330 IBCM_REF_CNT_INCR(statep); 2331 2332 if ((statep->state == IBCM_STATE_REP_SENT) || 2333 (statep->state == IBCM_STATE_MRA_REP_RCVD)) { 2334 timeout_id_t timer_val = statep->timerid; 2335 2336 statep->state = IBCM_STATE_TRANSIENT_ESTABLISHED; 2337 2338 if (timer_val) { 2339 statep->timerid = 0; 2340 mutex_exit(&statep->state_mutex); 2341 (void) untimeout(timer_val); 2342 } else 2343 mutex_exit(&statep->state_mutex); 2344 2345 /* CM doesn't have RTU message here */ 2346 ibcm_cep_state_rtu(statep, NULL); 2347 2348 } else { 2349 if (statep->state == IBCM_STATE_ESTABLISHED || 2350 statep->state == IBCM_STATE_TRANSIENT_ESTABLISHED) { 2351 IBTF_DPRINTF_L4(cmlog, "ibcm_comm_est_handler: " 2352 "Channel already in ESTABLISHED state"); 2353 } else { 2354 /* An unexpected behavior from remote */ 2355 IBTF_DPRINTF_L2(cmlog, "ibcm_comm_est_handler: " 2356 "Unexpected in state = %d", statep->state); 2357 } 2358 mutex_exit(&statep->state_mutex); 2359 2360 ibcm_insert_trace(statep, IBCM_TRACE_INCOMING_COMEST); 2361 } 2362 2363 mutex_enter(&statep->state_mutex); 2364 IBCM_REF_CNT_DECR(statep); 2365 mutex_exit(&statep->state_mutex); 2366 } 2367 2368 2369 /* 2370 * ibcm_async_handler(): 2371 * CM's Async Handler 2372 * (Handles ATTACH, DETACH, COM_EST events) 2373 * 2374 * Arguments: 2375 * eventp - A pointer to an ibt_async_event_t struct 2376 * 2377 * Return values: None 2378 * 2379 * NOTE : CM assumes that all HCA DR events are delivered sequentially 2380 * i.e., until ibcm_async_handler completes for a given HCA DR, framework 2381 * shall not invoke ibcm_async_handler with another DR event for the same 2382 * HCA 2383 */ 2384 /* ARGSUSED */ 2385 void 2386 ibcm_async_handler(void *clnt_hdl, ibt_hca_hdl_t hca_hdl, 2387 ibt_async_code_t code, ibt_async_event_t *eventp) 2388 { 2389 ibcm_hca_info_t *hcap; 2390 ibcm_port_up_t *pup; 2391 2392 IBTF_DPRINTF_L3(cmlog, "ibcm_async_handler: " 2393 "clnt_hdl = %p, code = 0x%x, eventp = 0x%p", 2394 clnt_hdl, code, eventp); 2395 2396 mutex_enter(&ibcm_global_hca_lock); 2397 2398 /* If fini is going to complete successfully, then return */ 2399 if (ibcm_finit_state != IBCM_FINIT_IDLE) { 2400 2401 /* 2402 * This finit state implies one of the following: 2403 * Init either didn't start or didn't complete OR 2404 * Fini is about to return SUCCESS and release the global lock. 2405 * In all these cases, it is safe to ignore the async. 2406 */ 2407 2408 IBTF_DPRINTF_L2(cmlog, "ibcm_async_handler: ignoring event %x, " 2409 "as either init didn't complete or fini about to succeed", 2410 code); 2411 mutex_exit(&ibcm_global_hca_lock); 2412 return; 2413 } 2414 2415 switch (code) { 2416 case IBT_EVENT_PORT_UP: 2417 mutex_exit(&ibcm_global_hca_lock); 2418 pup = kmem_alloc(sizeof (ibcm_port_up_t), KM_SLEEP); 2419 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*pup)) 2420 pup->pup_hca_guid = eventp->ev_hca_guid; 2421 pup->pup_port = eventp->ev_port; 2422 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(*pup)) 2423 (void) taskq_dispatch(ibcm_taskq, 2424 ibcm_service_record_rewrite_task, pup, TQ_SLEEP); 2425 ibcm_path_cache_purge(); 2426 return; 2427 2428 case IBT_HCA_ATTACH_EVENT: 2429 2430 /* eventp->ev_hcaguid is the HCA GUID of interest */ 2431 ibcm_hca_attach(eventp->ev_hca_guid); 2432 break; 2433 2434 case IBT_HCA_DETACH_EVENT: 2435 2436 /* eventp->ev_hca_guid is the HCA GUID of interest */ 2437 if ((hcap = ibcm_find_hcap_entry(eventp->ev_hca_guid)) == 2438 NULL) { 2439 IBTF_DPRINTF_L2(cmlog, "ibcm_async_handler:" 2440 " hca %llX doesn't exist", eventp->ev_hca_guid); 2441 break; 2442 } 2443 2444 (void) ibcm_hca_detach(hcap); 2445 break; 2446 2447 case IBT_EVENT_COM_EST_QP: 2448 /* eventp->ev_qp_hdl is the ibt_qp_hdl_t of interest */ 2449 case IBT_EVENT_COM_EST_EEC: 2450 /* eventp->ev_eec_hdl is the ibt_eec_hdl_t of interest */ 2451 ibcm_comm_est_handler(eventp); 2452 break; 2453 default: 2454 break; 2455 } 2456 2457 /* Unblock, any blocked fini/init operations */ 2458 mutex_exit(&ibcm_global_hca_lock); 2459 } 2460