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 /* wait on response CV */ 991 absolute_time = ddi_get_lbolt() + 992 drv_usectohz(ibcm_wait_for_res_cnt_timeout); 993 994 while (hcap->hca_res_cnt > 0) 995 if (cv_timedwait(&ibcm_global_hca_cv, &ibcm_global_hca_lock, 996 absolute_time) == -1) 997 break; 998 999 if (hcap->hca_res_cnt != 0) { 1000 /* We got a timeout waiting for hca_res_cnt to become 0 */ 1001 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: Aborting due" 1002 " to timeout on res_cnt %d, \n Some CM connections are " 1003 "still in transient state, looks like we need to wait " 1004 "some more time (ibcm_wait_for_res_cnt_timeout).", 1005 hcap->hca_res_cnt); 1006 hcap->hca_state = IBCM_HCA_ACTIVE; 1007 return (IBCM_FAILURE); 1008 } 1009 1010 /* Re-assert the while loop step above */ 1011 ASSERT(hcap->hca_sidr_list == NULL); 1012 avl_destroy(&hcap->hca_active_tree); 1013 avl_destroy(&hcap->hca_passive_tree); 1014 avl_destroy(&hcap->hca_passive_comid_tree); 1015 1016 /* 1017 * Unregister all ports from IBMA 1018 * If there is a failure, re-initialize any free'd ibma handles. This 1019 * is required to receive the incoming mads 1020 */ 1021 status = IBCM_SUCCESS; 1022 for (port_index = 0; port_index < hcap->hca_num_ports; port_index++) { 1023 if ((status = ibcm_hca_fini_port(hcap, port_index)) != 1024 IBCM_SUCCESS) { 1025 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: " 1026 "Failed to free IBMA Handle for port_num %d", 1027 port_index + 1); 1028 break; 1029 } 1030 } 1031 1032 /* If detach fails, re-initialize ibma handles for incoming mads */ 1033 if (status != IBCM_SUCCESS) { 1034 for (i = 0; i < port_index; i++) { 1035 if (ibcm_hca_init_port(hcap, i) != IBT_SUCCESS) 1036 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_detach: " 1037 "Failed to re-allocate IBMA Handles for" 1038 " port_num %d", port_index + 1); 1039 } 1040 hcap->hca_state = IBCM_HCA_ACTIVE; 1041 return (IBCM_FAILURE); 1042 } 1043 1044 ibcm_fini_hca_ids(hcap); 1045 ibcm_delete_hca_entry(hcap); 1046 1047 IBTF_DPRINTF_L3(cmlog, "ibcm_hca_detach: DETACH succeeded"); 1048 return (IBCM_SUCCESS); 1049 } 1050 1051 /* Checks, if there are any active sidr state entries in the specified hca */ 1052 static ibcm_status_t 1053 ibcm_check_sidr_clean(ibcm_hca_info_t *hcap) 1054 { 1055 ibcm_ud_state_data_t *usp; 1056 uint32_t transient_cnt = 0; 1057 1058 IBTF_DPRINTF_L5(cmlog, "ibcm_check_sidr_clean:"); 1059 1060 rw_enter(&hcap->hca_sidr_list_lock, RW_WRITER); 1061 usp = hcap->hca_sidr_list; /* Point to the list */ 1062 while (usp != NULL) { 1063 mutex_enter(&usp->ud_state_mutex); 1064 if ((usp->ud_state != IBCM_STATE_SIDR_REP_SENT) && 1065 (usp->ud_state != IBCM_STATE_TIMED_OUT) && 1066 (usp->ud_state != IBCM_STATE_DELETE)) { 1067 1068 IBTF_DPRINTF_L3(cmlog, "ibcm_check_sidr_clean:" 1069 "usp = %p not in transient state = %d", usp, 1070 usp->ud_state); 1071 1072 mutex_exit(&usp->ud_state_mutex); 1073 rw_exit(&hcap->hca_sidr_list_lock); 1074 return (IBCM_FAILURE); 1075 } else { 1076 mutex_exit(&usp->ud_state_mutex); 1077 ++transient_cnt; 1078 } 1079 1080 usp = usp->ud_nextp; 1081 } 1082 rw_exit(&hcap->hca_sidr_list_lock); 1083 1084 IBTF_DPRINTF_L4(cmlog, "ibcm_check_sidr_clean: transient_cnt %d", 1085 transient_cnt); 1086 1087 return (IBCM_SUCCESS); 1088 } 1089 1090 /* Checks, if there are any active rc state entries, in the specified hca */ 1091 static ibcm_status_t 1092 ibcm_check_avl_clean(ibcm_hca_info_t *hcap) 1093 1094 { 1095 ibcm_state_data_t *sp; 1096 avl_tree_t *avl_tree; 1097 uint32_t transient_cnt = 0; 1098 1099 IBTF_DPRINTF_L5(cmlog, "ibcm_check_avl_clean:"); 1100 /* 1101 * Both the trees ie., active and passive must reference to all 1102 * statep's, so let's use one 1103 */ 1104 avl_tree = &hcap->hca_active_tree; 1105 1106 rw_enter(&hcap->hca_state_rwlock, RW_WRITER); 1107 1108 for (sp = avl_first(avl_tree); sp != NULL; 1109 sp = avl_walk(avl_tree, sp, AVL_AFTER)) { 1110 mutex_enter(&sp->state_mutex); 1111 if ((sp->state != IBCM_STATE_TIMEWAIT) && 1112 (sp->state != IBCM_STATE_REJ_SENT) && 1113 (sp->state != IBCM_STATE_DELETE)) { 1114 IBTF_DPRINTF_L3(cmlog, "ibcm_check_avl_clean: " 1115 "sp = %p not in transient state = %d", sp, 1116 sp->state); 1117 mutex_exit(&sp->state_mutex); 1118 rw_exit(&hcap->hca_state_rwlock); 1119 return (IBCM_FAILURE); 1120 } else { 1121 mutex_exit(&sp->state_mutex); 1122 ++transient_cnt; 1123 } 1124 } 1125 1126 rw_exit(&hcap->hca_state_rwlock); 1127 1128 IBTF_DPRINTF_L4(cmlog, "ibcm_check_avl_clean: transient_cnt %d", 1129 transient_cnt); 1130 1131 return (IBCM_SUCCESS); 1132 } 1133 1134 /* Adds a new entry into CM's global hca list, if hca_guid is not there yet */ 1135 static ibcm_hca_info_t * 1136 ibcm_add_hca_entry(ib_guid_t hcaguid, uint_t nports) 1137 { 1138 ibcm_hca_info_t *hcap; 1139 1140 IBTF_DPRINTF_L5(cmlog, "ibcm_add_hca_entry: guid = 0x%llX", 1141 hcaguid); 1142 1143 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 1144 1145 /* 1146 * Check if this hca_guid already in the list 1147 * If yes, then ignore this and return NULL 1148 */ 1149 1150 hcap = ibcm_hca_listp; 1151 1152 /* search for this HCA */ 1153 while (hcap != NULL) { 1154 if (hcap->hca_guid == hcaguid) { 1155 /* already exists */ 1156 IBTF_DPRINTF_L2(cmlog, "ibcm_add_hca_entry: " 1157 "hcap %p guid 0x%llX, entry already exists !!", 1158 hcap, hcap->hca_guid); 1159 return (NULL); 1160 } 1161 hcap = hcap->hca_next; 1162 } 1163 1164 /* Allocate storage for the new HCA entry found */ 1165 hcap = kmem_zalloc(sizeof (ibcm_hca_info_t) + 1166 (nports - 1) * sizeof (ibcm_port_info_t), KM_SLEEP); 1167 1168 /* initialize RW lock */ 1169 rw_init(&hcap->hca_state_rwlock, NULL, RW_DRIVER, NULL); 1170 /* initialize SIDR list lock */ 1171 rw_init(&hcap->hca_sidr_list_lock, NULL, RW_DRIVER, NULL); 1172 /* Insert "hcap" into the global HCA list maintained by CM */ 1173 hcap->hca_next = ibcm_hca_listp; 1174 ibcm_hca_listp = hcap; 1175 1176 IBTF_DPRINTF_L5(cmlog, "ibcm_add_hca_entry: done hcap = 0x%p", hcap); 1177 1178 return (hcap); 1179 1180 } 1181 1182 /* deletes the given ibcm_hca_info_t from CM's global hca list */ 1183 void 1184 ibcm_delete_hca_entry(ibcm_hca_info_t *hcap) 1185 { 1186 ibcm_hca_info_t *headp, *prevp = NULL; 1187 1188 /* ibcm_hca_global_lock is held */ 1189 IBTF_DPRINTF_L5(cmlog, "ibcm_delete_hca_entry: guid = 0x%llX " 1190 "hcap = 0x%p", hcap->hca_guid, hcap); 1191 1192 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 1193 1194 headp = ibcm_hca_listp; 1195 while (headp != NULL) { 1196 if (headp == hcap) { 1197 IBTF_DPRINTF_L3(cmlog, "ibcm_delete_hca_entry: " 1198 "deleting hcap %p hcaguid %llX", hcap, 1199 hcap->hca_guid); 1200 if (prevp) { 1201 prevp->hca_next = headp->hca_next; 1202 } else { 1203 prevp = headp->hca_next; 1204 ibcm_hca_listp = prevp; 1205 } 1206 rw_destroy(&hcap->hca_state_rwlock); 1207 rw_destroy(&hcap->hca_sidr_list_lock); 1208 kmem_free(hcap, sizeof (ibcm_hca_info_t) + 1209 (hcap->hca_num_ports - 1) * 1210 sizeof (ibcm_port_info_t)); 1211 return; 1212 } 1213 1214 prevp = headp; 1215 headp = headp->hca_next; 1216 } 1217 } 1218 1219 /* 1220 * ibcm_find_hca_entry: 1221 * Given a HCA's GUID find out ibcm_hca_info_t entry for that HCA 1222 * This entry can be then used to access AVL tree/SIDR list etc. 1223 * If entry exists and in HCA ATTACH state, then hca's ref cnt is 1224 * incremented and entry returned. Else NULL returned. 1225 * 1226 * All functions that use ibcm_find_hca_entry and get a non-NULL 1227 * return values must call ibcm_dec_hca_acc_cnt to decrement the 1228 * respective hca ref cnt. There shouldn't be any usage of 1229 * ibcm_hca_info_t * returned from ibcm_find_hca_entry, 1230 * after decrementing the hca_acc_cnt 1231 * 1232 * INPUTS: 1233 * hca_guid - HCA's guid 1234 * 1235 * RETURN VALUE: 1236 * hcap - if a match is found, else NULL 1237 */ 1238 ibcm_hca_info_t * 1239 ibcm_find_hca_entry(ib_guid_t hca_guid) 1240 { 1241 ibcm_hca_info_t *hcap; 1242 1243 IBTF_DPRINTF_L5(cmlog, "ibcm_find_hca_entry: guid = 0x%llX", hca_guid); 1244 1245 mutex_enter(&ibcm_global_hca_lock); 1246 1247 hcap = ibcm_hca_listp; 1248 /* search for this HCA */ 1249 while (hcap != NULL) { 1250 if (hcap->hca_guid == hca_guid) 1251 break; 1252 hcap = hcap->hca_next; 1253 } 1254 1255 /* if no hcap for the hca_guid, return NULL */ 1256 if (hcap == NULL) { 1257 mutex_exit(&ibcm_global_hca_lock); 1258 return (NULL); 1259 } 1260 1261 /* return hcap, only if it valid to use */ 1262 if (hcap->hca_state == IBCM_HCA_ACTIVE) { 1263 ++(hcap->hca_acc_cnt); 1264 1265 IBTF_DPRINTF_L5(cmlog, "ibcm_find_hca_entry: " 1266 "found hcap = 0x%p hca_acc_cnt %u", hcap, 1267 hcap->hca_acc_cnt); 1268 1269 mutex_exit(&ibcm_global_hca_lock); 1270 return (hcap); 1271 } else { 1272 mutex_exit(&ibcm_global_hca_lock); 1273 1274 IBTF_DPRINTF_L2(cmlog, "ibcm_find_hca_entry: " 1275 "found hcap = 0x%p not in active state", hcap); 1276 return (NULL); 1277 } 1278 } 1279 1280 /* 1281 * Searches for ibcm_hca_info_t entry based on hca_guid, but doesn't increment 1282 * the hca's reference count. This function is used, where the calling context 1283 * is attempting to delete hcap itself and hence acc_cnt cannot be incremented 1284 * OR assumes that valid hcap must be available in ibcm's global hca list. 1285 */ 1286 ibcm_hca_info_t * 1287 ibcm_find_hcap_entry(ib_guid_t hca_guid) 1288 { 1289 ibcm_hca_info_t *hcap; 1290 1291 IBTF_DPRINTF_L5(cmlog, "ibcm_find_hcap_entry: guid = 0x%llX", hca_guid); 1292 1293 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 1294 1295 hcap = ibcm_hca_listp; 1296 /* search for this HCA */ 1297 while (hcap != NULL) { 1298 if (hcap->hca_guid == hca_guid) 1299 break; 1300 hcap = hcap->hca_next; 1301 } 1302 1303 if (hcap == NULL) 1304 IBTF_DPRINTF_L2(cmlog, "ibcm_find_hcap_entry: No hcap found for" 1305 " hca_guid 0x%llX", hca_guid); 1306 else 1307 IBTF_DPRINTF_L5(cmlog, "ibcm_find_hcap_entry: hcap found for" 1308 " hca_guid 0x%llX", hca_guid); 1309 1310 return (hcap); 1311 } 1312 1313 /* increment the hca's temporary reference count */ 1314 ibcm_status_t 1315 ibcm_inc_hca_acc_cnt(ibcm_hca_info_t *hcap) 1316 { 1317 mutex_enter(&ibcm_global_hca_lock); 1318 if (hcap->hca_state == IBCM_HCA_ACTIVE) { 1319 ++(hcap->hca_acc_cnt); 1320 IBTF_DPRINTF_L5(cmlog, "ibcm_inc_hca_acc_cnt: " 1321 "hcap = 0x%p acc_cnt = %d ", hcap, hcap->hca_acc_cnt); 1322 mutex_exit(&ibcm_global_hca_lock); 1323 return (IBCM_SUCCESS); 1324 } else { 1325 IBTF_DPRINTF_L2(cmlog, "ibcm_inc_hca_acc_cnt: " 1326 "hcap INACTIVE 0x%p acc_cnt = %d ", hcap, 1327 hcap->hca_acc_cnt); 1328 mutex_exit(&ibcm_global_hca_lock); 1329 return (IBCM_FAILURE); 1330 } 1331 } 1332 1333 /* decrement the hca's ref count, and wake up any waiting threads */ 1334 void 1335 ibcm_dec_hca_acc_cnt(ibcm_hca_info_t *hcap) 1336 { 1337 mutex_enter(&ibcm_global_hca_lock); 1338 ASSERT(hcap->hca_acc_cnt > 0); 1339 --(hcap->hca_acc_cnt); 1340 IBTF_DPRINTF_L5(cmlog, "ibcm_dec_hca_acc_cnt: hcap = 0x%p " 1341 "acc_cnt = %d", hcap, hcap->hca_acc_cnt); 1342 if ((hcap->hca_state == IBCM_HCA_NOT_ACTIVE) && 1343 (hcap->hca_acc_cnt == 0)) { 1344 IBTF_DPRINTF_L3(cmlog, "ibcm_dec_hca_acc_cnt: " 1345 "cv_broadcast for hcap = 0x%p", hcap); 1346 cv_broadcast(&ibcm_global_hca_cv); 1347 } 1348 mutex_exit(&ibcm_global_hca_lock); 1349 } 1350 1351 /* increment the hca's resource count */ 1352 void 1353 ibcm_inc_hca_res_cnt(ibcm_hca_info_t *hcap) 1354 1355 { 1356 mutex_enter(&ibcm_global_hca_lock); 1357 ++(hcap->hca_res_cnt); 1358 IBTF_DPRINTF_L5(cmlog, "ibcm_inc_hca_res_cnt: hcap = 0x%p " 1359 "ref_cnt = %d", hcap, hcap->hca_res_cnt); 1360 mutex_exit(&ibcm_global_hca_lock); 1361 } 1362 1363 /* decrement the hca's resource count, and wake up any waiting threads */ 1364 void 1365 ibcm_dec_hca_res_cnt(ibcm_hca_info_t *hcap) 1366 { 1367 mutex_enter(&ibcm_global_hca_lock); 1368 ASSERT(hcap->hca_res_cnt > 0); 1369 --(hcap->hca_res_cnt); 1370 IBTF_DPRINTF_L5(cmlog, "ibcm_dec_hca_res_cnt: hcap = 0x%p " 1371 "ref_cnt = %d", hcap, hcap->hca_res_cnt); 1372 if ((hcap->hca_state == IBCM_HCA_NOT_ACTIVE) && 1373 (hcap->hca_res_cnt == 0)) { 1374 IBTF_DPRINTF_L3(cmlog, "ibcm_dec_hca_res_cnt: " 1375 "cv_broadcast for hcap = 0x%p", hcap); 1376 cv_broadcast(&ibcm_global_hca_cv); 1377 } 1378 mutex_exit(&ibcm_global_hca_lock); 1379 } 1380 1381 /* increment the hca's service count */ 1382 void 1383 ibcm_inc_hca_svc_cnt(ibcm_hca_info_t *hcap) 1384 1385 { 1386 mutex_enter(&ibcm_global_hca_lock); 1387 ++(hcap->hca_svc_cnt); 1388 IBTF_DPRINTF_L5(cmlog, "ibcm_inc_hca_svc_cnt: hcap = 0x%p " 1389 "svc_cnt = %d", hcap, hcap->hca_svc_cnt); 1390 mutex_exit(&ibcm_global_hca_lock); 1391 } 1392 1393 /* decrement the hca's service count */ 1394 void 1395 ibcm_dec_hca_svc_cnt(ibcm_hca_info_t *hcap) 1396 { 1397 mutex_enter(&ibcm_global_hca_lock); 1398 ASSERT(hcap->hca_svc_cnt > 0); 1399 --(hcap->hca_svc_cnt); 1400 IBTF_DPRINTF_L5(cmlog, "ibcm_dec_hca_svc_cnt: hcap = 0x%p " 1401 "svc_cnt = %d", hcap, hcap->hca_svc_cnt); 1402 mutex_exit(&ibcm_global_hca_lock); 1403 } 1404 1405 /* 1406 * The following code manages three classes of requests that CM makes to 1407 * the fabric. Those three classes are SA_ACCESS, REQ/REP/RTU, and DREQ/DREP. 1408 * The main issue is that the fabric can become very busy, and the CM 1409 * protocols rely on responses being made based on a predefined timeout 1410 * value. By managing how many simultaneous sessions are allowed, there 1411 * is observed extremely high reliability of CM protocol succeeding when 1412 * it should. 1413 * 1414 * SA_ACCESS and DREQ/DREP are managed at the thread level, whereby the 1415 * thread blocks until there are less than some number of threads doing 1416 * similar requests. 1417 * 1418 * REQ/REP/RTU requests beyond a given limit are added to a list, 1419 * allowing the thread to return immediately to its caller in the 1420 * case where the "mode" is IBT_NONBLOCKING. This is the mode used 1421 * by uDAPL and seems to be an important feature/behavior. 1422 */ 1423 1424 static int 1425 ibcm_ok_to_start(struct ibcm_open_s *openp) 1426 { 1427 return (openp->sends < openp->sends_hiwat && 1428 openp->in_progress < openp->in_progress_max); 1429 } 1430 1431 void 1432 ibcm_open_done(ibcm_state_data_t *statep) 1433 { 1434 int run; 1435 ibcm_state_data_t **linkp, *tmp; 1436 1437 ASSERT(MUTEX_HELD(&statep->state_mutex)); 1438 if (statep->open_flow == 1) { 1439 statep->open_flow = 0; 1440 mutex_enter(&ibcm_open.mutex); 1441 if (statep->open_link == NULL) { 1442 ibcm_open.in_progress--; 1443 run = ibcm_ok_to_start(&ibcm_open); 1444 } else { 1445 ibcm_open.queued--; 1446 linkp = &ibcm_open.head.open_link; 1447 while (*linkp != statep) 1448 linkp = &((*linkp)->open_link); 1449 *linkp = statep->open_link; 1450 statep->open_link = NULL; 1451 /* 1452 * If we remove what tail pointed to, we need 1453 * to reassign tail (it is never NULL). 1454 * tail points to head for the empty list. 1455 */ 1456 if (ibcm_open.tail == statep) { 1457 tmp = &ibcm_open.head; 1458 while (tmp->open_link != &ibcm_open.head) 1459 tmp = tmp->open_link; 1460 ibcm_open.tail = tmp; 1461 } 1462 run = 0; 1463 } 1464 mutex_exit(&ibcm_open.mutex); 1465 if (run) 1466 ibcm_run_tlist_thread(); 1467 } 1468 } 1469 1470 /* dtrace */ 1471 void 1472 ibcm_open_wait(hrtime_t delta) 1473 { 1474 if (delta > 1000000) 1475 IBTF_DPRINTF_L2(cmlog, "ibcm_open_wait: flow more %lld", delta); 1476 } 1477 1478 void 1479 ibcm_open_start(ibcm_state_data_t *statep) 1480 { 1481 ibcm_insert_trace(statep, IBCM_TRACE_OUTGOING_REQ); 1482 1483 mutex_enter(&statep->state_mutex); 1484 ibcm_open_wait(gethrtime() - statep->post_time); 1485 mutex_exit(&statep->state_mutex); 1486 1487 ibcm_post_rc_mad(statep, statep->stored_msg, ibcm_post_req_complete, 1488 statep); 1489 1490 mutex_enter(&statep->state_mutex); 1491 IBCM_REF_CNT_DECR(statep); 1492 mutex_exit(&statep->state_mutex); 1493 } 1494 1495 void 1496 ibcm_open_enqueue(ibcm_state_data_t *statep) 1497 { 1498 int run; 1499 1500 mutex_enter(&statep->state_mutex); 1501 statep->post_time = gethrtime(); 1502 mutex_exit(&statep->state_mutex); 1503 mutex_enter(&ibcm_open.mutex); 1504 if (ibcm_open.queued == 0 && ibcm_ok_to_start(&ibcm_open)) { 1505 ibcm_open.in_progress++; 1506 mutex_exit(&ibcm_open.mutex); 1507 ibcm_open_start(statep); 1508 } else { 1509 ibcm_open.queued++; 1510 statep->open_link = &ibcm_open.head; 1511 ibcm_open.tail->open_link = statep; 1512 ibcm_open.tail = statep; 1513 run = ibcm_ok_to_start(&ibcm_open); 1514 mutex_exit(&ibcm_open.mutex); 1515 if (run) 1516 ibcm_run_tlist_thread(); 1517 } 1518 } 1519 1520 ibcm_state_data_t * 1521 ibcm_open_dequeue(void) 1522 { 1523 ibcm_state_data_t *statep; 1524 1525 ASSERT(MUTEX_HELD(&ibcm_open.mutex)); 1526 ibcm_open.queued--; 1527 ibcm_open.in_progress++; 1528 statep = ibcm_open.head.open_link; 1529 ibcm_open.head.open_link = statep->open_link; 1530 statep->open_link = NULL; 1531 /* 1532 * If we remove what tail pointed to, we need 1533 * to reassign tail (it is never NULL). 1534 * tail points to head for the empty list. 1535 */ 1536 if (ibcm_open.tail == statep) 1537 ibcm_open.tail = &ibcm_open.head; 1538 return (statep); 1539 } 1540 1541 void 1542 ibcm_check_for_opens(void) 1543 { 1544 ibcm_state_data_t *statep; 1545 1546 mutex_enter(&ibcm_open.mutex); 1547 1548 while (ibcm_open.queued > 0) { 1549 if (ibcm_ok_to_start(&ibcm_open)) { 1550 statep = ibcm_open_dequeue(); 1551 mutex_exit(&ibcm_open.mutex); 1552 1553 ibcm_open_start(statep); 1554 1555 mutex_enter(&ibcm_open.mutex); 1556 } else { 1557 break; 1558 } 1559 } 1560 mutex_exit(&ibcm_open.mutex); 1561 } 1562 1563 1564 static void 1565 ibcm_flow_init(ibcm_flow_t *flow, uint_t simul_max) 1566 { 1567 flow->list = NULL; 1568 flow->simul = 0; 1569 flow->waiters_per_chunk = 4; 1570 flow->simul_max = simul_max; 1571 flow->lowat = simul_max - flow->waiters_per_chunk; 1572 flow->lowat_default = flow->lowat; 1573 /* stats */ 1574 flow->total = 0; 1575 } 1576 1577 static void 1578 ibcm_rc_flow_control_init(void) 1579 { 1580 mutex_init(&ibcm_open.mutex, NULL, MUTEX_DEFAULT, NULL); 1581 mutex_enter(&ibcm_open.mutex); 1582 ibcm_flow_init(&ibcm_close_flow, ibcm_close_simul_max); 1583 ibcm_flow_init(&ibcm_lapr_flow, ibcm_lapr_simul_max); 1584 ibcm_flow_init(&ibcm_saa_flow, ibcm_saa_simul_max); 1585 1586 ibcm_open.queued = 0; 1587 ibcm_open.exit_deferred = 0; 1588 ibcm_open.in_progress = 0; 1589 ibcm_open.in_progress_max = 16; 1590 ibcm_open.sends = 0; 1591 ibcm_open.sends_max = 0; 1592 ibcm_open.sends_lowat = 8; 1593 ibcm_open.sends_hiwat = 16; 1594 ibcm_open.tail = &ibcm_open.head; 1595 ibcm_open.head.open_link = NULL; 1596 mutex_exit(&ibcm_open.mutex); 1597 1598 mutex_init(&ibcm_close.mutex, NULL, MUTEX_DEFAULT, NULL); 1599 mutex_enter(&ibcm_close.mutex); 1600 ibcm_close.tail = &ibcm_close.head; 1601 ibcm_close.head.close_link = NULL; 1602 mutex_exit(&ibcm_close.mutex); 1603 } 1604 1605 static void 1606 ibcm_rc_flow_control_fini(void) 1607 { 1608 mutex_destroy(&ibcm_open.mutex); 1609 mutex_destroy(&ibcm_close.mutex); 1610 } 1611 1612 static ibcm_flow1_t * 1613 ibcm_flow_find(ibcm_flow_t *flow) 1614 { 1615 ibcm_flow1_t *flow1; 1616 ibcm_flow1_t *f; 1617 1618 f = flow->list; 1619 if (f) { /* most likely code path */ 1620 while (f->link != NULL) 1621 f = f->link; 1622 if (f->waiters < flow->waiters_per_chunk) 1623 return (f); 1624 } 1625 1626 /* There was no flow1 list element ready for another waiter */ 1627 mutex_exit(&ibcm_open.mutex); 1628 flow1 = kmem_alloc(sizeof (*flow1), KM_SLEEP); 1629 mutex_enter(&ibcm_open.mutex); 1630 1631 f = flow->list; 1632 if (f) { 1633 while (f->link != NULL) 1634 f = f->link; 1635 if (f->waiters < flow->waiters_per_chunk) { 1636 kmem_free(flow1, sizeof (*flow1)); 1637 return (f); 1638 } 1639 f->link = flow1; 1640 } else { 1641 flow->list = flow1; 1642 } 1643 cv_init(&flow1->cv, NULL, CV_DRIVER, NULL); 1644 flow1->waiters = 0; 1645 flow1->link = NULL; 1646 return (flow1); 1647 } 1648 1649 static void 1650 ibcm_flow_enter(ibcm_flow_t *flow) 1651 { 1652 mutex_enter(&ibcm_open.mutex); 1653 if (flow->list == NULL && flow->simul < flow->simul_max) { 1654 flow->simul++; 1655 flow->total++; 1656 mutex_exit(&ibcm_open.mutex); 1657 } else { 1658 ibcm_flow1_t *flow1; 1659 1660 flow1 = ibcm_flow_find(flow); 1661 flow1->waiters++; 1662 cv_wait(&flow1->cv, &ibcm_open.mutex); 1663 if (--flow1->waiters == 0) { 1664 cv_destroy(&flow1->cv); 1665 mutex_exit(&ibcm_open.mutex); 1666 kmem_free(flow1, sizeof (*flow1)); 1667 } else 1668 mutex_exit(&ibcm_open.mutex); 1669 } 1670 } 1671 1672 static void 1673 ibcm_flow_exit(ibcm_flow_t *flow) 1674 { 1675 mutex_enter(&ibcm_open.mutex); 1676 if (--flow->simul < flow->lowat) { 1677 if (flow->lowat < flow->lowat_default) 1678 flow->lowat++; 1679 if (flow->list) { 1680 ibcm_flow1_t *flow1; 1681 1682 flow1 = flow->list; 1683 flow->list = flow1->link; /* unlink */ 1684 flow1->link = NULL; /* be clean */ 1685 flow->total += flow1->waiters; 1686 flow->simul += flow1->waiters; 1687 cv_broadcast(&flow1->cv); 1688 } 1689 } 1690 mutex_exit(&ibcm_open.mutex); 1691 } 1692 1693 void 1694 ibcm_flow_inc(void) 1695 { 1696 mutex_enter(&ibcm_open.mutex); 1697 if (++ibcm_open.sends > ibcm_open.sends_max) { 1698 ibcm_open.sends_max = ibcm_open.sends; 1699 IBTF_DPRINTF_L2(cmlog, "ibcm_flow_inc: sends max = %d", 1700 ibcm_open.sends_max); 1701 } 1702 mutex_exit(&ibcm_open.mutex); 1703 } 1704 1705 static void 1706 ibcm_check_send_cmpltn_time(hrtime_t delta, char *event_msg) 1707 { 1708 if (delta > 4000000LL) { 1709 IBTF_DPRINTF_L2(cmlog, "ibcm_check_send_cmpltn_time: " 1710 "%s: %lldns", event_msg, delta); 1711 } 1712 } 1713 1714 void 1715 ibcm_flow_dec(hrtime_t time, char *mad_type) 1716 { 1717 int flow_exit = 0; 1718 int run = 0; 1719 1720 if (ibcm_dtrace) 1721 ibcm_check_send_cmpltn_time(gethrtime() - time, mad_type); 1722 mutex_enter(&ibcm_open.mutex); 1723 ibcm_open.sends--; 1724 if (ibcm_open.sends < ibcm_open.sends_lowat) { 1725 run = ibcm_ok_to_start(&ibcm_open); 1726 if (ibcm_open.exit_deferred) { 1727 ibcm_open.exit_deferred--; 1728 flow_exit = 1; 1729 } 1730 } 1731 mutex_exit(&ibcm_open.mutex); 1732 if (flow_exit) 1733 ibcm_flow_exit(&ibcm_close_flow); 1734 if (run) 1735 ibcm_run_tlist_thread(); 1736 } 1737 1738 void 1739 ibcm_close_enqueue(ibcm_state_data_t *statep) 1740 { 1741 mutex_enter(&ibcm_close.mutex); 1742 statep->close_link = NULL; 1743 ibcm_close.tail->close_link = statep; 1744 ibcm_close.tail = statep; 1745 mutex_exit(&ibcm_close.mutex); 1746 ibcm_run_tlist_thread(); 1747 } 1748 1749 void 1750 ibcm_check_for_async_close() 1751 { 1752 ibcm_state_data_t *statep; 1753 1754 mutex_enter(&ibcm_close.mutex); 1755 1756 while (ibcm_close.head.close_link) { 1757 statep = ibcm_close.head.close_link; 1758 ibcm_close.head.close_link = statep->close_link; 1759 statep->close_link = NULL; 1760 if (ibcm_close.tail == statep) 1761 ibcm_close.tail = &ibcm_close.head; 1762 mutex_exit(&ibcm_close.mutex); 1763 ibcm_close_start(statep); 1764 mutex_enter(&ibcm_close.mutex); 1765 } 1766 mutex_exit(&ibcm_close.mutex); 1767 } 1768 1769 void 1770 ibcm_close_enter(void) 1771 { 1772 ibcm_flow_enter(&ibcm_close_flow); 1773 } 1774 1775 void 1776 ibcm_close_exit(void) 1777 { 1778 int flow_exit; 1779 1780 mutex_enter(&ibcm_open.mutex); 1781 if (ibcm_open.sends < ibcm_open.sends_lowat || 1782 ibcm_open.exit_deferred >= 4) 1783 flow_exit = 1; 1784 else { 1785 flow_exit = 0; 1786 ibcm_open.exit_deferred++; 1787 } 1788 mutex_exit(&ibcm_open.mutex); 1789 if (flow_exit) 1790 ibcm_flow_exit(&ibcm_close_flow); 1791 } 1792 1793 /* 1794 * This function needs to be called twice to finish our flow 1795 * control accounting when closing down a connection. One 1796 * call has send_done set to 1, while the other has it set to 0. 1797 * Because of retries, this could get called more than once 1798 * with either 0 or 1, but additional calls have no effect. 1799 */ 1800 void 1801 ibcm_close_done(ibcm_state_data_t *statep, int send_done) 1802 { 1803 int flow_exit; 1804 1805 ASSERT(MUTEX_HELD(&statep->state_mutex)); 1806 if (statep->close_flow == 1) { 1807 if (send_done) 1808 statep->close_flow = 3; 1809 else 1810 statep->close_flow = 2; 1811 } else if ((send_done && statep->close_flow == 2) || 1812 (!send_done && statep->close_flow == 3)) { 1813 statep->close_flow = 0; 1814 mutex_enter(&ibcm_open.mutex); 1815 if (ibcm_open.sends < ibcm_open.sends_lowat || 1816 ibcm_open.exit_deferred >= 4) 1817 flow_exit = 1; 1818 else { 1819 flow_exit = 0; 1820 ibcm_open.exit_deferred++; 1821 } 1822 mutex_exit(&ibcm_open.mutex); 1823 if (flow_exit) 1824 ibcm_flow_exit(&ibcm_close_flow); 1825 } 1826 } 1827 1828 void 1829 ibcm_lapr_enter(void) 1830 { 1831 ibcm_flow_enter(&ibcm_lapr_flow); 1832 } 1833 1834 void 1835 ibcm_lapr_exit(void) 1836 { 1837 ibcm_flow_exit(&ibcm_lapr_flow); 1838 } 1839 1840 void 1841 ibcm_sa_access_enter() 1842 { 1843 ibcm_flow_enter(&ibcm_saa_flow); 1844 } 1845 1846 void 1847 ibcm_sa_access_exit() 1848 { 1849 ibcm_flow_exit(&ibcm_saa_flow); 1850 } 1851 1852 static void 1853 ibcm_sm_notice_handler(ibmf_saa_handle_t saa_handle, 1854 ibmf_saa_subnet_event_t saa_event_code, 1855 ibmf_saa_event_details_t *saa_event_details, 1856 void *callback_arg) 1857 { 1858 ibcm_port_info_t *portp = (ibcm_port_info_t *)callback_arg; 1859 ibt_subnet_event_code_t code; 1860 ibt_subnet_event_t event; 1861 uint8_t event_status; 1862 1863 IBTF_DPRINTF_L3(cmlog, "ibcm_sm_notice_handler: saa_hdl %p, code = %d", 1864 saa_handle, saa_event_code); 1865 1866 mutex_enter(&ibcm_sm_notice_serialize_lock); 1867 1868 switch (saa_event_code) { 1869 case IBMF_SAA_EVENT_MCG_CREATED: 1870 code = IBT_SM_EVENT_MCG_CREATED; 1871 break; 1872 case IBMF_SAA_EVENT_MCG_DELETED: 1873 code = IBT_SM_EVENT_MCG_DELETED; 1874 break; 1875 case IBMF_SAA_EVENT_GID_AVAILABLE: 1876 code = IBT_SM_EVENT_GID_AVAIL; 1877 ibcm_path_cache_purge(); 1878 break; 1879 case IBMF_SAA_EVENT_GID_UNAVAILABLE: 1880 code = IBT_SM_EVENT_GID_UNAVAIL; 1881 ibcm_path_cache_purge(); 1882 break; 1883 case IBMF_SAA_EVENT_SUBSCRIBER_STATUS_CHG: 1884 event_status = 1885 saa_event_details->ie_producer_event_status_mask & 1886 IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM; 1887 if (event_status == (portp->port_event_status & 1888 IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM)) { 1889 mutex_exit(&ibcm_sm_notice_serialize_lock); 1890 return; /* no change */ 1891 } 1892 portp->port_event_status = event_status; 1893 if (event_status == IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM) 1894 code = IBT_SM_EVENT_AVAILABLE; 1895 else 1896 code = IBT_SM_EVENT_UNAVAILABLE; 1897 break; 1898 default: 1899 mutex_exit(&ibcm_sm_notice_serialize_lock); 1900 return; 1901 } 1902 1903 mutex_enter(&ibcm_global_hca_lock); 1904 1905 /* don't send the event if we're tearing down */ 1906 if (!IBCM_ACCESS_HCA_OK(portp->port_hcap)) { 1907 mutex_exit(&ibcm_global_hca_lock); 1908 mutex_exit(&ibcm_sm_notice_serialize_lock); 1909 return; 1910 } 1911 1912 ++(portp->port_hcap->hca_acc_cnt); 1913 mutex_exit(&ibcm_global_hca_lock); 1914 1915 event.sm_notice_gid = saa_event_details->ie_gid; 1916 ibtl_cm_sm_notice_handler(portp->port_sgid0, code, &event); 1917 1918 mutex_exit(&ibcm_sm_notice_serialize_lock); 1919 1920 ibcm_dec_hca_acc_cnt(portp->port_hcap); 1921 } 1922 1923 void 1924 ibt_register_subnet_notices(ibt_clnt_hdl_t ibt_hdl, 1925 ibt_sm_notice_handler_t sm_notice_handler, void *private) 1926 { 1927 ibcm_port_info_t *portp; 1928 ibcm_hca_info_t *hcap; 1929 uint8_t port; 1930 int num_failed_sgids; 1931 ibtl_cm_sm_init_fail_t *ifail; 1932 ib_gid_t *sgidp; 1933 1934 IBTF_DPRINTF_L3(cmlog, "ibt_register_subnet_notices: ibt_hdl = %p", 1935 ibt_hdl); 1936 1937 mutex_enter(&ibcm_sm_notice_serialize_lock); 1938 1939 ibtl_cm_set_sm_notice_handler(ibt_hdl, sm_notice_handler, private); 1940 if (sm_notice_handler == NULL) { 1941 mutex_exit(&ibcm_sm_notice_serialize_lock); 1942 return; 1943 } 1944 1945 /* for each port, if service is not available, make a call */ 1946 mutex_enter(&ibcm_global_hca_lock); 1947 num_failed_sgids = 0; 1948 hcap = ibcm_hca_listp; 1949 while (hcap != NULL) { 1950 portp = hcap->hca_port_info; 1951 for (port = 0; port < hcap->hca_num_ports; port++) { 1952 if (!(portp->port_event_status & 1953 IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM)) 1954 num_failed_sgids++; 1955 portp++; 1956 } 1957 hcap = hcap->hca_next; 1958 } 1959 if (num_failed_sgids != 0) { 1960 ifail = kmem_alloc(sizeof (*ifail) + 1961 (num_failed_sgids - 1) * sizeof (ib_gid_t), KM_SLEEP); 1962 ifail->smf_num_sgids = num_failed_sgids; 1963 ifail->smf_ibt_hdl = ibt_hdl; 1964 sgidp = &ifail->smf_sgid[0]; 1965 hcap = ibcm_hca_listp; 1966 while (hcap != NULL) { 1967 portp = hcap->hca_port_info; 1968 for (port = 0; port < hcap->hca_num_ports; port++) { 1969 if (!(portp->port_event_status & 1970 IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM)) 1971 *sgidp++ = portp->port_sgid0; 1972 portp++; 1973 } 1974 hcap = hcap->hca_next; 1975 } 1976 } 1977 mutex_exit(&ibcm_global_hca_lock); 1978 1979 if (num_failed_sgids != 0) { 1980 ibtl_cm_sm_notice_init_failure(ifail); 1981 kmem_free(ifail, sizeof (*ifail) + 1982 (num_failed_sgids - 1) * sizeof (ib_gid_t)); 1983 } 1984 mutex_exit(&ibcm_sm_notice_serialize_lock); 1985 } 1986 1987 /* The following is run from a taskq because we've seen the stack overflow. */ 1988 static void 1989 ibcm_init_saa(void *arg) 1990 { 1991 ibcm_port_info_t *portp = (ibcm_port_info_t *)arg; 1992 int status; 1993 ib_guid_t port_guid; 1994 ibmf_saa_subnet_event_args_t event_args; 1995 1996 port_guid = portp->port_sgid0.gid_guid; 1997 1998 IBTF_DPRINTF_L3(cmlog, "ibcm_init_saa: port guid %llX", port_guid); 1999 2000 event_args.is_event_callback_arg = portp; 2001 event_args.is_event_callback = ibcm_sm_notice_handler; 2002 2003 if ((status = ibmf_sa_session_open(port_guid, 0, &event_args, 2004 IBMF_VERSION, 0, &portp->port_ibmf_saa_hdl)) != IBMF_SUCCESS) { 2005 IBTF_DPRINTF_L2(cmlog, "ibcm_init_saa: " 2006 "ibmf_sa_session_open failed for port guid %llX " 2007 "status = %d", port_guid, status); 2008 } else { 2009 IBTF_DPRINTF_L2(cmlog, "ibcm_init_saa: " 2010 "registered sa_hdl 0x%p for port guid %llX", 2011 portp->port_ibmf_saa_hdl, port_guid); 2012 } 2013 2014 mutex_enter(&ibcm_sa_open_lock); 2015 portp->port_saa_open_in_progress = 0; 2016 cv_broadcast(&ibcm_sa_open_cv); 2017 mutex_exit(&ibcm_sa_open_lock); 2018 } 2019 2020 void 2021 ibcm_init_saa_handle(ibcm_hca_info_t *hcap, uint8_t port) 2022 { 2023 ibmf_saa_handle_t saa_handle; 2024 uint8_t port_index = port - 1; 2025 ibcm_port_info_t *portp = &hcap->hca_port_info[port_index]; 2026 ibt_status_t ibt_status; 2027 2028 if (port_index >= hcap->hca_num_ports) 2029 return; 2030 2031 mutex_enter(&ibcm_sa_open_lock); 2032 if (portp->port_saa_open_in_progress) { 2033 mutex_exit(&ibcm_sa_open_lock); 2034 return; 2035 } 2036 2037 saa_handle = portp->port_ibmf_saa_hdl; 2038 if (saa_handle != NULL) { 2039 mutex_exit(&ibcm_sa_open_lock); 2040 return; 2041 } 2042 2043 portp->port_saa_open_in_progress = 1; 2044 mutex_exit(&ibcm_sa_open_lock); 2045 2046 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(portp->port_event_status)) 2047 2048 /* The assumption is that we're getting event notifications */ 2049 portp->port_event_status = IBMF_SAA_EVENT_STATUS_MASK_PRODUCER_SM; 2050 2051 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(portp->port_event_status)) 2052 2053 ibt_status = ibt_get_port_state_byguid(portp->port_hcap->hca_guid, 2054 portp->port_num, &portp->port_sgid0, NULL); 2055 if (ibt_status != IBT_SUCCESS) { 2056 IBTF_DPRINTF_L2(cmlog, "ibcm_init_saa_handle: " 2057 "ibt_get_port_state_byguid failed for guid %llX " 2058 "with status %d", portp->port_hcap->hca_guid, ibt_status); 2059 mutex_enter(&ibcm_sa_open_lock); 2060 portp->port_saa_open_in_progress = 0; 2061 cv_broadcast(&ibcm_sa_open_cv); 2062 mutex_exit(&ibcm_sa_open_lock); 2063 return; 2064 } 2065 /* if the port is UP, try sa_session_open */ 2066 (void) taskq_dispatch(ibcm_taskq, ibcm_init_saa, portp, TQ_SLEEP); 2067 } 2068 2069 2070 ibmf_saa_handle_t 2071 ibcm_get_saa_handle(ibcm_hca_info_t *hcap, uint8_t port) 2072 { 2073 ibmf_saa_handle_t saa_handle; 2074 uint8_t port_index = port - 1; 2075 ibcm_port_info_t *portp = &hcap->hca_port_info[port_index]; 2076 ibt_status_t ibt_status; 2077 2078 if (port_index >= hcap->hca_num_ports) 2079 return (NULL); 2080 2081 mutex_enter(&ibcm_sa_open_lock); 2082 while (portp->port_saa_open_in_progress) { 2083 cv_wait(&ibcm_sa_open_cv, &ibcm_sa_open_lock); 2084 } 2085 2086 saa_handle = portp->port_ibmf_saa_hdl; 2087 if (saa_handle != NULL) { 2088 mutex_exit(&ibcm_sa_open_lock); 2089 return (saa_handle); 2090 } 2091 2092 portp->port_saa_open_in_progress = 1; 2093 mutex_exit(&ibcm_sa_open_lock); 2094 2095 ibt_status = ibt_get_port_state_byguid(portp->port_hcap->hca_guid, 2096 portp->port_num, &portp->port_sgid0, NULL); 2097 if (ibt_status != IBT_SUCCESS) { 2098 IBTF_DPRINTF_L2(cmlog, "ibcm_get_saa_handle: " 2099 "ibt_get_port_state_byguid failed for guid %llX " 2100 "with status %d", portp->port_hcap->hca_guid, ibt_status); 2101 mutex_enter(&ibcm_sa_open_lock); 2102 portp->port_saa_open_in_progress = 0; 2103 cv_broadcast(&ibcm_sa_open_cv); 2104 mutex_exit(&ibcm_sa_open_lock); 2105 return (NULL); 2106 } 2107 /* if the port is UP, try sa_session_open */ 2108 (void) taskq_dispatch(ibcm_taskq, ibcm_init_saa, portp, TQ_SLEEP); 2109 2110 mutex_enter(&ibcm_sa_open_lock); 2111 while (portp->port_saa_open_in_progress) { 2112 cv_wait(&ibcm_sa_open_cv, &ibcm_sa_open_lock); 2113 } 2114 saa_handle = portp->port_ibmf_saa_hdl; 2115 mutex_exit(&ibcm_sa_open_lock); 2116 return (saa_handle); 2117 } 2118 2119 2120 /* 2121 * ibcm_hca_init_port(): 2122 * - Register port with IBMA 2123 * 2124 * Arguments: 2125 * hcap - HCA's guid 2126 * port_index - port number minus 1 2127 * 2128 * Return values: 2129 * IBCM_SUCCESS - success 2130 */ 2131 ibt_status_t 2132 ibcm_hca_init_port(ibcm_hca_info_t *hcap, uint8_t port_index) 2133 { 2134 int status; 2135 ibmf_register_info_t *ibmf_reg; 2136 2137 IBTF_DPRINTF_L4(cmlog, "ibcm_hca_init_port: hcap = 0x%p port_num %d", 2138 hcap, port_index + 1); 2139 2140 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 2141 2142 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(hcap->hca_port_info)) 2143 2144 if (hcap->hca_port_info[port_index].port_ibmf_hdl == NULL) { 2145 /* Register with IBMF */ 2146 ibmf_reg = &hcap->hca_port_info[port_index].port_ibmf_reg; 2147 ibmf_reg->ir_ci_guid = hcap->hca_guid; 2148 ibmf_reg->ir_port_num = port_index + 1; 2149 ibmf_reg->ir_client_class = COMM_MGT_MANAGER_AGENT; 2150 2151 /* 2152 * register with management framework 2153 */ 2154 status = ibmf_register(ibmf_reg, IBMF_VERSION, 2155 IBMF_REG_FLAG_NO_OFFLOAD, NULL, NULL, 2156 &(hcap->hca_port_info[port_index].port_ibmf_hdl), 2157 &(hcap->hca_port_info[port_index].port_ibmf_caps)); 2158 2159 if (status != IBMF_SUCCESS) { 2160 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_init_port: " 2161 "ibmf_register failed for port_num %x, " 2162 "status = %x", port_index + 1, status); 2163 return (ibcm_ibmf_analyze_error(status)); 2164 } 2165 2166 hcap->hca_port_info[port_index].port_qp1.qp_cm = 2167 IBMF_QP_HANDLE_DEFAULT; 2168 hcap->hca_port_info[port_index].port_qp1.qp_port = 2169 &(hcap->hca_port_info[port_index]); 2170 2171 /* 2172 * Register the read callback with IBMF. 2173 * Since we just did an ibmf_register, handle is 2174 * valid and ibcm_recv_cb() is valid so we can 2175 * safely assert for success of ibmf_setup_recv_cb() 2176 * 2177 * Depending on the "state" of the HCA, 2178 * CM may drop incoming packets 2179 */ 2180 status = ibmf_setup_async_cb( 2181 hcap->hca_port_info[port_index].port_ibmf_hdl, 2182 IBMF_QP_HANDLE_DEFAULT, ibcm_recv_cb, 2183 &(hcap->hca_port_info[port_index].port_qp1), 0); 2184 ASSERT(status == IBMF_SUCCESS); 2185 2186 IBTF_DPRINTF_L5(cmlog, "ibcm_hca_init_port: " 2187 "IBMF hdl[%x] = 0x%p", port_index, 2188 hcap->hca_port_info[port_index].port_ibmf_hdl); 2189 2190 /* Attempt to get the saa_handle for this port */ 2191 ibcm_init_saa_handle(hcap, port_index + 1); 2192 } 2193 2194 return (IBT_SUCCESS); 2195 } 2196 2197 /* 2198 * useful, to re attempt to initialize port ibma handles from elsewhere in 2199 * cm code 2200 */ 2201 ibt_status_t 2202 ibcm_hca_reinit_port(ibcm_hca_info_t *hcap, uint8_t port_index) 2203 { 2204 ibt_status_t status; 2205 2206 IBTF_DPRINTF_L5(cmlog, "ibcm_hca_reinit_port: hcap 0x%p port_num %d", 2207 hcap, port_index + 1); 2208 2209 mutex_enter(&ibcm_global_hca_lock); 2210 status = ibcm_hca_init_port(hcap, port_index); 2211 mutex_exit(&ibcm_global_hca_lock); 2212 return (status); 2213 } 2214 2215 2216 /* 2217 * ibcm_hca_fini_port(): 2218 * - Deregister port with IBMA 2219 * 2220 * Arguments: 2221 * hcap - HCA's guid 2222 * port_index - port number minus 1 2223 * 2224 * Return values: 2225 * IBCM_SUCCESS - success 2226 */ 2227 static ibcm_status_t 2228 ibcm_hca_fini_port(ibcm_hca_info_t *hcap, uint8_t port_index) 2229 { 2230 int ibmf_status; 2231 ibcm_status_t ibcm_status; 2232 2233 IBTF_DPRINTF_L4(cmlog, "ibcm_hca_fini_port: hcap = 0x%p port_num %d ", 2234 hcap, port_index + 1); 2235 2236 ASSERT(MUTEX_HELD(&ibcm_global_hca_lock)); 2237 2238 if (hcap->hca_port_info[port_index].port_ibmf_saa_hdl != NULL) { 2239 IBTF_DPRINTF_L5(cmlog, "ibcm_hca_fini_port: " 2240 "ibmf_sa_session_close IBMF SAA hdl %p", 2241 hcap->hca_port_info[port_index].port_ibmf_saa_hdl); 2242 2243 ibmf_status = ibmf_sa_session_close( 2244 &hcap->hca_port_info[port_index].port_ibmf_saa_hdl, 0); 2245 if (ibmf_status != IBMF_SUCCESS) { 2246 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_fini_port: " 2247 "ibmf_sa_session_close of port %d returned %x", 2248 port_index + 1, ibmf_status); 2249 return (IBCM_FAILURE); 2250 } 2251 } 2252 2253 if (hcap->hca_port_info[port_index].port_ibmf_hdl != NULL) { 2254 IBTF_DPRINTF_L5(cmlog, "ibcm_hca_fini_port: " 2255 "ibmf_unregister IBMF Hdl %p", 2256 hcap->hca_port_info[port_index].port_ibmf_hdl); 2257 2258 /* clean-up all the ibmf qp's allocated on this port */ 2259 ibcm_status = ibcm_free_allqps(hcap, port_index + 1); 2260 2261 if (ibcm_status != IBCM_SUCCESS) { 2262 2263 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_fini_port: " 2264 "ibcm_free_allqps failed for port_num %d", 2265 port_index + 1); 2266 return (IBCM_FAILURE); 2267 } 2268 2269 /* Tear down the receive callback */ 2270 ibmf_status = ibmf_tear_down_async_cb( 2271 hcap->hca_port_info[port_index].port_ibmf_hdl, 2272 IBMF_QP_HANDLE_DEFAULT, 0); 2273 2274 if (ibmf_status != IBMF_SUCCESS) { 2275 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_fini_port: " 2276 "ibmf_tear_down_async_cb failed %d port_num %d", 2277 ibmf_status, port_index + 1); 2278 return (IBCM_FAILURE); 2279 } 2280 2281 /* Now, unregister with IBMF */ 2282 ibmf_status = ibmf_unregister( 2283 &hcap->hca_port_info[port_index].port_ibmf_hdl, 0); 2284 IBTF_DPRINTF_L4(cmlog, "ibcm_hca_fini_port: " 2285 "ibmf_unregister of port_num %x returned %x", 2286 port_index + 1, ibmf_status); 2287 2288 if (ibmf_status == IBMF_SUCCESS) 2289 hcap->hca_port_info[port_index].port_ibmf_hdl = NULL; 2290 else { 2291 IBTF_DPRINTF_L2(cmlog, "ibcm_hca_fini_port: " 2292 "ibmf_unregister failed %d port_num %d", 2293 ibmf_status, port_index + 1); 2294 return (IBCM_FAILURE); 2295 } 2296 } 2297 return (IBCM_SUCCESS); 2298 } 2299 2300 /* 2301 * ibcm_comm_est_handler(): 2302 * Check if the given channel is in ESTABLISHED state or not 2303 * 2304 * Arguments: 2305 * eventp - A pointer to an ibt_async_event_t struct 2306 * 2307 * Return values: NONE 2308 */ 2309 static void 2310 ibcm_comm_est_handler(ibt_async_event_t *eventp) 2311 { 2312 ibcm_state_data_t *statep; 2313 2314 IBTF_DPRINTF_L4(cmlog, "ibcm_comm_est_handler:"); 2315 2316 /* Both QP and EEC handles can't be NULL */ 2317 if (eventp->ev_chan_hdl == NULL) { 2318 IBTF_DPRINTF_L2(cmlog, "ibcm_comm_est_handler: " 2319 "both QP and EEC handles are NULL"); 2320 return; 2321 } 2322 2323 /* get the "statep" from qp/eec handles */ 2324 IBCM_GET_CHAN_PRIVATE(eventp->ev_chan_hdl, statep); 2325 if (statep == NULL) { 2326 IBTF_DPRINTF_L2(cmlog, "ibcm_comm_est_handler: statep is NULL"); 2327 return; 2328 } 2329 2330 mutex_enter(&statep->state_mutex); 2331 2332 IBCM_RELEASE_CHAN_PRIVATE(eventp->ev_chan_hdl); 2333 2334 IBTF_DPRINTF_L4(cmlog, "ibcm_comm_est_handler: statep = %p", statep); 2335 2336 IBCM_REF_CNT_INCR(statep); 2337 2338 if ((statep->state == IBCM_STATE_REP_SENT) || 2339 (statep->state == IBCM_STATE_MRA_REP_RCVD)) { 2340 timeout_id_t timer_val = statep->timerid; 2341 2342 statep->state = IBCM_STATE_TRANSIENT_ESTABLISHED; 2343 2344 if (timer_val) { 2345 statep->timerid = 0; 2346 mutex_exit(&statep->state_mutex); 2347 (void) untimeout(timer_val); 2348 } else 2349 mutex_exit(&statep->state_mutex); 2350 2351 /* CM doesn't have RTU message here */ 2352 ibcm_cep_state_rtu(statep, NULL); 2353 2354 } else { 2355 if (statep->state == IBCM_STATE_ESTABLISHED || 2356 statep->state == IBCM_STATE_TRANSIENT_ESTABLISHED) { 2357 IBTF_DPRINTF_L4(cmlog, "ibcm_comm_est_handler: " 2358 "Channel already in ESTABLISHED state"); 2359 } else { 2360 /* An unexpected behavior from remote */ 2361 IBTF_DPRINTF_L2(cmlog, "ibcm_comm_est_handler: " 2362 "Unexpected in state = %d", statep->state); 2363 } 2364 mutex_exit(&statep->state_mutex); 2365 2366 ibcm_insert_trace(statep, IBCM_TRACE_INCOMING_COMEST); 2367 } 2368 2369 mutex_enter(&statep->state_mutex); 2370 IBCM_REF_CNT_DECR(statep); 2371 mutex_exit(&statep->state_mutex); 2372 } 2373 2374 2375 /* 2376 * ibcm_async_handler(): 2377 * CM's Async Handler 2378 * (Handles ATTACH, DETACH, COM_EST events) 2379 * 2380 * Arguments: 2381 * eventp - A pointer to an ibt_async_event_t struct 2382 * 2383 * Return values: None 2384 * 2385 * NOTE : CM assumes that all HCA DR events are delivered sequentially 2386 * i.e., until ibcm_async_handler completes for a given HCA DR, framework 2387 * shall not invoke ibcm_async_handler with another DR event for the same 2388 * HCA 2389 */ 2390 /* ARGSUSED */ 2391 void 2392 ibcm_async_handler(void *clnt_hdl, ibt_hca_hdl_t hca_hdl, 2393 ibt_async_code_t code, ibt_async_event_t *eventp) 2394 { 2395 ibcm_hca_info_t *hcap; 2396 ibcm_port_up_t *pup; 2397 2398 IBTF_DPRINTF_L3(cmlog, "ibcm_async_handler: " 2399 "clnt_hdl = %p, code = 0x%x, eventp = 0x%p", 2400 clnt_hdl, code, eventp); 2401 2402 mutex_enter(&ibcm_global_hca_lock); 2403 2404 /* If fini is going to complete successfully, then return */ 2405 if (ibcm_finit_state != IBCM_FINIT_IDLE) { 2406 2407 /* 2408 * This finit state implies one of the following: 2409 * Init either didn't start or didn't complete OR 2410 * Fini is about to return SUCCESS and release the global lock. 2411 * In all these cases, it is safe to ignore the async. 2412 */ 2413 2414 IBTF_DPRINTF_L2(cmlog, "ibcm_async_handler: ignoring event %x, " 2415 "as either init didn't complete or fini about to succeed", 2416 code); 2417 mutex_exit(&ibcm_global_hca_lock); 2418 return; 2419 } 2420 2421 switch (code) { 2422 case IBT_EVENT_PORT_UP: 2423 mutex_exit(&ibcm_global_hca_lock); 2424 pup = kmem_alloc(sizeof (ibcm_port_up_t), KM_SLEEP); 2425 _NOTE(NOW_INVISIBLE_TO_OTHER_THREADS(*pup)) 2426 pup->pup_hca_guid = eventp->ev_hca_guid; 2427 pup->pup_port = eventp->ev_port; 2428 _NOTE(NOW_VISIBLE_TO_OTHER_THREADS(*pup)) 2429 (void) taskq_dispatch(ibcm_taskq, 2430 ibcm_service_record_rewrite_task, pup, TQ_SLEEP); 2431 ibcm_path_cache_purge(); 2432 return; 2433 2434 case IBT_HCA_ATTACH_EVENT: 2435 2436 /* eventp->ev_hcaguid is the HCA GUID of interest */ 2437 ibcm_hca_attach(eventp->ev_hca_guid); 2438 break; 2439 2440 case IBT_HCA_DETACH_EVENT: 2441 2442 /* eventp->ev_hca_guid is the HCA GUID of interest */ 2443 if ((hcap = ibcm_find_hcap_entry(eventp->ev_hca_guid)) == 2444 NULL) { 2445 IBTF_DPRINTF_L2(cmlog, "ibcm_async_handler:" 2446 " hca %llX doesn't exist", eventp->ev_hca_guid); 2447 break; 2448 } 2449 2450 (void) ibcm_hca_detach(hcap); 2451 break; 2452 2453 case IBT_EVENT_COM_EST_QP: 2454 /* eventp->ev_qp_hdl is the ibt_qp_hdl_t of interest */ 2455 case IBT_EVENT_COM_EST_EEC: 2456 /* eventp->ev_eec_hdl is the ibt_eec_hdl_t of interest */ 2457 ibcm_comm_est_handler(eventp); 2458 break; 2459 default: 2460 break; 2461 } 2462 2463 /* Unblock, any blocked fini/init operations */ 2464 mutex_exit(&ibcm_global_hca_lock); 2465 } 2466