1 /* 2 * GPL HEADER START 3 * 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 only, 8 * as published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License version 2 for more details (a copy is included 14 * in the LICENSE file that accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License 17 * version 2 along with this program; If not, see 18 * http://www.gnu.org/licenses/gpl-2.0.html 19 * 20 * GPL HEADER END 21 */ 22 /* 23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Use is subject to license terms. 25 * 26 * Copyright (c) 2012, 2015, Intel Corporation. 27 */ 28 /* 29 * This file is part of Lustre, http://www.lustre.org/ 30 * Lustre is a trademark of Seagate, Inc. 31 * 32 * lnet/include/lnet/lib-types.h 33 */ 34 35 #ifndef __LNET_LIB_TYPES_H__ 36 #define __LNET_LIB_TYPES_H__ 37 38 #include <linux/kthread.h> 39 #include <linux/uio.h> 40 #include <linux/types.h> 41 #include <linux/completion.h> 42 43 #include "types.h" 44 #include "lnetctl.h" 45 46 /* Max payload size */ 47 #define LNET_MAX_PAYLOAD CONFIG_LNET_MAX_PAYLOAD 48 #if (LNET_MAX_PAYLOAD < LNET_MTU) 49 # error "LNET_MAX_PAYLOAD too small - error in configure --with-max-payload-mb" 50 #elif (LNET_MAX_PAYLOAD > (PAGE_SIZE * LNET_MAX_IOV)) 51 # error "LNET_MAX_PAYLOAD too large - error in configure --with-max-payload-mb" 52 #endif 53 54 /* forward refs */ 55 struct lnet_libmd; 56 57 typedef struct lnet_msg { 58 struct list_head msg_activelist; 59 struct list_head msg_list; /* Q for credits/MD */ 60 61 lnet_process_id_t msg_target; 62 /* where is it from, it's only for building event */ 63 lnet_nid_t msg_from; 64 __u32 msg_type; 65 66 /* committed for sending */ 67 unsigned int msg_tx_committed:1; 68 /* CPT # this message committed for sending */ 69 unsigned int msg_tx_cpt:15; 70 /* committed for receiving */ 71 unsigned int msg_rx_committed:1; 72 /* CPT # this message committed for receiving */ 73 unsigned int msg_rx_cpt:15; 74 /* queued for tx credit */ 75 unsigned int msg_tx_delayed:1; 76 /* queued for RX buffer */ 77 unsigned int msg_rx_delayed:1; 78 /* ready for pending on RX delay list */ 79 unsigned int msg_rx_ready_delay:1; 80 81 unsigned int msg_vmflush:1; /* VM trying to free memory */ 82 unsigned int msg_target_is_router:1; /* sending to a router */ 83 unsigned int msg_routing:1; /* being forwarded */ 84 unsigned int msg_ack:1; /* ack on finalize (PUT) */ 85 unsigned int msg_sending:1; /* outgoing message */ 86 unsigned int msg_receiving:1; /* being received */ 87 unsigned int msg_txcredit:1; /* taken an NI send credit */ 88 unsigned int msg_peertxcredit:1; /* taken a peer send credit */ 89 unsigned int msg_rtrcredit:1; /* taken a global router credit */ 90 unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */ 91 unsigned int msg_onactivelist:1; /* on the activelist */ 92 unsigned int msg_rdma_get:1; 93 94 struct lnet_peer *msg_txpeer; /* peer I'm sending to */ 95 struct lnet_peer *msg_rxpeer; /* peer I received from */ 96 97 void *msg_private; 98 struct lnet_libmd *msg_md; 99 100 unsigned int msg_len; 101 unsigned int msg_wanted; 102 unsigned int msg_offset; 103 unsigned int msg_niov; 104 struct kvec *msg_iov; 105 lnet_kiov_t *msg_kiov; 106 107 lnet_event_t msg_ev; 108 lnet_hdr_t msg_hdr; 109 } lnet_msg_t; 110 111 typedef struct lnet_libhandle { 112 struct list_head lh_hash_chain; 113 __u64 lh_cookie; 114 } lnet_libhandle_t; 115 116 #define lh_entry(ptr, type, member) \ 117 ((type *)((char *)(ptr) - (char *)(&((type *)0)->member))) 118 119 typedef struct lnet_eq { 120 struct list_head eq_list; 121 lnet_libhandle_t eq_lh; 122 lnet_seq_t eq_enq_seq; 123 lnet_seq_t eq_deq_seq; 124 unsigned int eq_size; 125 lnet_eq_handler_t eq_callback; 126 lnet_event_t *eq_events; 127 int **eq_refs; /* percpt refcount for EQ */ 128 } lnet_eq_t; 129 130 typedef struct lnet_me { 131 struct list_head me_list; 132 lnet_libhandle_t me_lh; 133 lnet_process_id_t me_match_id; 134 unsigned int me_portal; 135 unsigned int me_pos; /* hash offset in mt_hash */ 136 __u64 me_match_bits; 137 __u64 me_ignore_bits; 138 lnet_unlink_t me_unlink; 139 struct lnet_libmd *me_md; 140 } lnet_me_t; 141 142 typedef struct lnet_libmd { 143 struct list_head md_list; 144 lnet_libhandle_t md_lh; 145 lnet_me_t *md_me; 146 char *md_start; 147 unsigned int md_offset; 148 unsigned int md_length; 149 unsigned int md_max_size; 150 int md_threshold; 151 int md_refcount; 152 unsigned int md_options; 153 unsigned int md_flags; 154 void *md_user_ptr; 155 lnet_eq_t *md_eq; 156 unsigned int md_niov; /* # frags */ 157 union { 158 struct kvec iov[LNET_MAX_IOV]; 159 lnet_kiov_t kiov[LNET_MAX_IOV]; 160 } md_iov; 161 } lnet_libmd_t; 162 163 #define LNET_MD_FLAG_ZOMBIE (1 << 0) 164 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1) 165 #define LNET_MD_FLAG_ABORTED (1 << 2) 166 167 typedef struct { 168 /* info about peers we are trying to fail */ 169 struct list_head tp_list; /* ln_test_peers */ 170 lnet_nid_t tp_nid; /* matching nid */ 171 unsigned int tp_threshold; /* # failures to simulate */ 172 } lnet_test_peer_t; 173 174 #define LNET_COOKIE_TYPE_MD 1 175 #define LNET_COOKIE_TYPE_ME 2 176 #define LNET_COOKIE_TYPE_EQ 3 177 #define LNET_COOKIE_TYPE_BITS 2 178 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL) 179 180 struct lnet_ni; /* forward ref */ 181 182 typedef struct lnet_lnd { 183 /* fields managed by portals */ 184 struct list_head lnd_list; /* stash in the LND table */ 185 int lnd_refcount; /* # active instances */ 186 187 /* fields initialised by the LND */ 188 __u32 lnd_type; 189 190 int (*lnd_startup)(struct lnet_ni *ni); 191 void (*lnd_shutdown)(struct lnet_ni *ni); 192 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg); 193 194 /* 195 * In data movement APIs below, payload buffers are described as a set 196 * of 'niov' fragments which are... 197 * EITHER 198 * in virtual memory (struct iovec *iov != NULL) 199 * OR 200 * in pages (kernel only: plt_kiov_t *kiov != NULL). 201 * The LND may NOT overwrite these fragment descriptors. 202 * An 'offset' and may specify a byte offset within the set of 203 * fragments to start from 204 */ 205 206 /* 207 * Start sending a preformatted message. 'private' is NULL for PUT and 208 * GET messages; otherwise this is a response to an incoming message 209 * and 'private' is the 'private' passed to lnet_parse(). Return 210 * non-zero for immediate failure, otherwise complete later with 211 * lnet_finalize() 212 */ 213 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg); 214 215 /* 216 * Start receiving 'mlen' bytes of payload data, skipping the following 217 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to 218 * lnet_parse(). Return non-zero for immediate failure, otherwise 219 * complete later with lnet_finalize(). This also gives back a receive 220 * credit if the LND does flow control. 221 */ 222 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg, 223 int delayed, struct iov_iter *to, unsigned int rlen); 224 225 /* 226 * lnet_parse() has had to delay processing of this message 227 * (e.g. waiting for a forwarding buffer or send credits). Give the 228 * LND a chance to free urgently needed resources. If called, return 0 229 * for success and do NOT give back a receive credit; that has to wait 230 * until lnd_recv() gets called. On failure return < 0 and 231 * release resources; lnd_recv() will not be called. 232 */ 233 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, 234 lnet_msg_t *msg, void **new_privatep); 235 236 /* notification of peer health */ 237 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive); 238 239 /* query of peer aliveness */ 240 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, 241 unsigned long *when); 242 243 /* accept a new connection */ 244 int (*lnd_accept)(struct lnet_ni *ni, struct socket *sock); 245 } lnd_t; 246 247 struct lnet_tx_queue { 248 int tq_credits; /* # tx credits free */ 249 int tq_credits_min; /* lowest it's been */ 250 int tq_credits_max; /* total # tx credits */ 251 struct list_head tq_delayed; /* delayed TXs */ 252 }; 253 254 typedef struct lnet_ni { 255 spinlock_t ni_lock; 256 struct list_head ni_list; /* chain on ln_nis */ 257 struct list_head ni_cptlist; /* chain on ln_nis_cpt */ 258 int ni_maxtxcredits; /* # tx credits */ 259 /* # per-peer send credits */ 260 int ni_peertxcredits; 261 /* # per-peer router buffer credits */ 262 int ni_peerrtrcredits; 263 /* seconds to consider peer dead */ 264 int ni_peertimeout; 265 int ni_ncpts; /* number of CPTs */ 266 __u32 *ni_cpts; /* bond NI on some CPTs */ 267 lnet_nid_t ni_nid; /* interface's NID */ 268 void *ni_data; /* instance-specific data */ 269 lnd_t *ni_lnd; /* procedural interface */ 270 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */ 271 int **ni_refs; /* percpt reference count */ 272 time64_t ni_last_alive;/* when I was last alive */ 273 lnet_ni_status_t *ni_status; /* my health status */ 274 /* per NI LND tunables */ 275 struct lnet_ioctl_config_lnd_tunables *ni_lnd_tunables; 276 /* equivalent interfaces to use */ 277 char *ni_interfaces[LNET_MAX_INTERFACES]; 278 /* original net namespace */ 279 struct net *ni_net_ns; 280 } lnet_ni_t; 281 282 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL 283 284 /* 285 * NB: value of these features equal to LNET_PROTO_PING_VERSION_x 286 * of old LNet, so there shouldn't be any compatibility issue 287 */ 288 #define LNET_PING_FEAT_INVAL (0) /* no feature */ 289 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */ 290 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */ 291 #define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */ 292 293 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \ 294 LNET_PING_FEAT_NI_STATUS) 295 296 /* router checker data, per router */ 297 #define LNET_MAX_RTR_NIS 16 298 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS]) 299 typedef struct { 300 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */ 301 struct list_head rcd_list; 302 lnet_handle_md_t rcd_mdh; /* ping buffer MD */ 303 struct lnet_peer *rcd_gateway; /* reference to gateway */ 304 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */ 305 } lnet_rc_data_t; 306 307 typedef struct lnet_peer { 308 struct list_head lp_hashlist; /* chain on peer hash */ 309 struct list_head lp_txq; /* messages blocking for 310 tx credits */ 311 struct list_head lp_rtrq; /* messages blocking for 312 router credits */ 313 struct list_head lp_rtr_list; /* chain on router list */ 314 int lp_txcredits; /* # tx credits available */ 315 int lp_mintxcredits; /* low water mark */ 316 int lp_rtrcredits; /* # router credits */ 317 int lp_minrtrcredits; /* low water mark */ 318 unsigned int lp_alive:1; /* alive/dead? */ 319 unsigned int lp_notify:1; /* notification outstanding? */ 320 unsigned int lp_notifylnd:1;/* outstanding notification 321 for LND? */ 322 unsigned int lp_notifying:1; /* some thread is handling 323 notification */ 324 unsigned int lp_ping_notsent;/* SEND event outstanding 325 from ping */ 326 int lp_alive_count; /* # times router went 327 dead<->alive */ 328 long lp_txqnob; /* bytes queued for sending */ 329 unsigned long lp_timestamp; /* time of last aliveness 330 news */ 331 unsigned long lp_ping_timestamp;/* time of last ping 332 attempt */ 333 unsigned long lp_ping_deadline; /* != 0 if ping reply 334 expected */ 335 unsigned long lp_last_alive; /* when I was last alive */ 336 unsigned long lp_last_query; /* when lp_ni was queried 337 last time */ 338 lnet_ni_t *lp_ni; /* interface peer is on */ 339 lnet_nid_t lp_nid; /* peer's NID */ 340 int lp_refcount; /* # refs */ 341 int lp_cpt; /* CPT this peer attached on */ 342 /* # refs from lnet_route_t::lr_gateway */ 343 int lp_rtr_refcount; 344 /* returned RC ping features */ 345 unsigned int lp_ping_feats; 346 struct list_head lp_routes; /* routers on this peer */ 347 lnet_rc_data_t *lp_rcd; /* router checker state */ 348 } lnet_peer_t; 349 350 /* peer hash size */ 351 #define LNET_PEER_HASH_BITS 9 352 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS) 353 354 /* peer hash table */ 355 struct lnet_peer_table { 356 int pt_version; /* /proc validity stamp */ 357 int pt_number; /* # peers extant */ 358 /* # zombies to go to deathrow (and not there yet) */ 359 int pt_zombies; 360 struct list_head pt_deathrow; /* zombie peers */ 361 struct list_head *pt_hash; /* NID->peer hash */ 362 }; 363 364 /* 365 * peer aliveness is enabled only on routers for peers in a network where the 366 * lnet_ni_t::ni_peertimeout has been set to a positive value 367 */ 368 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing && \ 369 (lp)->lp_ni->ni_peertimeout > 0) 370 371 typedef struct { 372 struct list_head lr_list; /* chain on net */ 373 struct list_head lr_gwlist; /* chain on gateway */ 374 lnet_peer_t *lr_gateway; /* router node */ 375 __u32 lr_net; /* remote network number */ 376 int lr_seq; /* sequence for round-robin */ 377 unsigned int lr_downis; /* number of down NIs */ 378 __u32 lr_hops; /* how far I am */ 379 unsigned int lr_priority; /* route priority */ 380 } lnet_route_t; 381 382 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7) 383 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16) 384 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits) 385 386 typedef struct { 387 struct list_head lrn_list; /* chain on 388 ln_remote_nets_hash */ 389 struct list_head lrn_routes; /* routes to me */ 390 __u32 lrn_net; /* my net number */ 391 } lnet_remotenet_t; 392 393 /** lnet message has credit and can be submitted to lnd for send/receive */ 394 #define LNET_CREDIT_OK 0 395 /** lnet message is waiting for credit */ 396 #define LNET_CREDIT_WAIT 1 397 398 typedef struct { 399 struct list_head rbp_bufs; /* my free buffer pool */ 400 struct list_head rbp_msgs; /* messages blocking 401 for a buffer */ 402 int rbp_npages; /* # pages in each buffer */ 403 /* requested number of buffers */ 404 int rbp_req_nbuffers; 405 /* # buffers actually allocated */ 406 int rbp_nbuffers; 407 int rbp_credits; /* # free buffers / 408 blocked messages */ 409 int rbp_mincredits; /* low water mark */ 410 } lnet_rtrbufpool_t; 411 412 typedef struct { 413 struct list_head rb_list; /* chain on rbp_bufs */ 414 lnet_rtrbufpool_t *rb_pool; /* owning pool */ 415 lnet_kiov_t rb_kiov[0]; /* the buffer space */ 416 } lnet_rtrbuf_t; 417 418 #define LNET_PEER_HASHSIZE 503 /* prime! */ 419 420 #define LNET_TINY_BUF_IDX 0 421 #define LNET_SMALL_BUF_IDX 1 422 #define LNET_LARGE_BUF_IDX 2 423 424 /* # different router buffer pools */ 425 #define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1) 426 427 enum { 428 /* Didn't match anything */ 429 LNET_MATCHMD_NONE = (1 << 0), 430 /* Matched OK */ 431 LNET_MATCHMD_OK = (1 << 1), 432 /* Must be discarded */ 433 LNET_MATCHMD_DROP = (1 << 2), 434 /* match and buffer is exhausted */ 435 LNET_MATCHMD_EXHAUSTED = (1 << 3), 436 /* match or drop */ 437 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP), 438 }; 439 440 /* Options for lnet_portal_t::ptl_options */ 441 #define LNET_PTL_LAZY (1 << 0) 442 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */ 443 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, 444 request portal */ 445 446 /* parameter for matching operations (GET, PUT) */ 447 struct lnet_match_info { 448 __u64 mi_mbits; 449 lnet_process_id_t mi_id; 450 unsigned int mi_opc; 451 unsigned int mi_portal; 452 unsigned int mi_rlength; 453 unsigned int mi_roffset; 454 }; 455 456 /* ME hash of RDMA portal */ 457 #define LNET_MT_HASH_BITS 8 458 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS) 459 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1) 460 /* 461 * we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash, 462 * the last entry is reserved for MEs with ignore-bits 463 */ 464 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE 465 /* 466 * __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which 467 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the 468 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] 469 */ 470 #define LNET_MT_BITS_U64 6 /* 2^6 bits */ 471 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64) 472 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1) 473 474 /* portal match table */ 475 struct lnet_match_table { 476 /* reserved for upcoming patches, CPU partition ID */ 477 unsigned int mt_cpt; 478 unsigned int mt_portal; /* portal index */ 479 /* 480 * match table is set as "enabled" if there's non-exhausted MD 481 * attached on mt_mhash, it's only valid for wildcard portal 482 */ 483 unsigned int mt_enabled; 484 /* bitmap to flag whether MEs on mt_hash are exhausted or not */ 485 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP]; 486 struct list_head *mt_mhash; /* matching hash */ 487 }; 488 489 /* these are only useful for wildcard portal */ 490 /* Turn off message rotor for wildcard portals */ 491 #define LNET_PTL_ROTOR_OFF 0 492 /* round-robin dispatch all PUT messages for wildcard portals */ 493 #define LNET_PTL_ROTOR_ON 1 494 /* round-robin dispatch routed PUT message for wildcard portals */ 495 #define LNET_PTL_ROTOR_RR_RT 2 496 /* dispatch routed PUT message by hashing source NID for wildcard portals */ 497 #define LNET_PTL_ROTOR_HASH_RT 3 498 499 typedef struct lnet_portal { 500 spinlock_t ptl_lock; 501 unsigned int ptl_index; /* portal ID, reserved */ 502 /* flags on this portal: lazy, unique... */ 503 unsigned int ptl_options; 504 /* list of messages which are stealing buffer */ 505 struct list_head ptl_msg_stealing; 506 /* messages blocking for MD */ 507 struct list_head ptl_msg_delayed; 508 /* Match table for each CPT */ 509 struct lnet_match_table **ptl_mtables; 510 /* spread rotor of incoming "PUT" */ 511 unsigned int ptl_rotor; 512 /* # active entries for this portal */ 513 int ptl_mt_nmaps; 514 /* array of active entries' cpu-partition-id */ 515 int ptl_mt_maps[0]; 516 } lnet_portal_t; 517 518 #define LNET_LH_HASH_BITS 12 519 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS) 520 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1) 521 522 /* resource container (ME, MD, EQ) */ 523 struct lnet_res_container { 524 unsigned int rec_type; /* container type */ 525 __u64 rec_lh_cookie; /* cookie generator */ 526 struct list_head rec_active; /* active resource list */ 527 struct list_head *rec_lh_hash; /* handle hash */ 528 }; 529 530 /* message container */ 531 struct lnet_msg_container { 532 int msc_init; /* initialized or not */ 533 /* max # threads finalizing */ 534 int msc_nfinalizers; 535 /* msgs waiting to complete finalizing */ 536 struct list_head msc_finalizing; 537 struct list_head msc_active; /* active message list */ 538 /* threads doing finalization */ 539 void **msc_finalizers; 540 }; 541 542 /* Router Checker states */ 543 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */ 544 #define LNET_RC_STATE_RUNNING 1 /* started up OK */ 545 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */ 546 547 typedef struct { 548 /* CPU partition table of LNet */ 549 struct cfs_cpt_table *ln_cpt_table; 550 /* number of CPTs in ln_cpt_table */ 551 unsigned int ln_cpt_number; 552 unsigned int ln_cpt_bits; 553 554 /* protect LNet resources (ME/MD/EQ) */ 555 struct cfs_percpt_lock *ln_res_lock; 556 /* # portals */ 557 int ln_nportals; 558 /* the vector of portals */ 559 lnet_portal_t **ln_portals; 560 /* percpt ME containers */ 561 struct lnet_res_container **ln_me_containers; 562 /* percpt MD container */ 563 struct lnet_res_container **ln_md_containers; 564 565 /* Event Queue container */ 566 struct lnet_res_container ln_eq_container; 567 wait_queue_head_t ln_eq_waitq; 568 spinlock_t ln_eq_wait_lock; 569 unsigned int ln_remote_nets_hbits; 570 571 /* protect NI, peer table, credits, routers, rtrbuf... */ 572 struct cfs_percpt_lock *ln_net_lock; 573 /* percpt message containers for active/finalizing/freed message */ 574 struct lnet_msg_container **ln_msg_containers; 575 lnet_counters_t **ln_counters; 576 struct lnet_peer_table **ln_peer_tables; 577 /* failure simulation */ 578 struct list_head ln_test_peers; 579 struct list_head ln_drop_rules; 580 struct list_head ln_delay_rules; 581 582 struct list_head ln_nis; /* LND instances */ 583 /* NIs bond on specific CPT(s) */ 584 struct list_head ln_nis_cpt; 585 /* dying LND instances */ 586 struct list_head ln_nis_zombie; 587 lnet_ni_t *ln_loni; /* the loopback NI */ 588 589 /* remote networks with routes to them */ 590 struct list_head *ln_remote_nets_hash; 591 /* validity stamp */ 592 __u64 ln_remote_nets_version; 593 /* list of all known routers */ 594 struct list_head ln_routers; 595 /* validity stamp */ 596 __u64 ln_routers_version; 597 /* percpt router buffer pools */ 598 lnet_rtrbufpool_t **ln_rtrpools; 599 600 lnet_handle_md_t ln_ping_target_md; 601 lnet_handle_eq_t ln_ping_target_eq; 602 lnet_ping_info_t *ln_ping_info; 603 604 /* router checker startup/shutdown state */ 605 int ln_rc_state; 606 /* router checker's event queue */ 607 lnet_handle_eq_t ln_rc_eqh; 608 /* rcd still pending on net */ 609 struct list_head ln_rcd_deathrow; 610 /* rcd ready for free */ 611 struct list_head ln_rcd_zombie; 612 /* serialise startup/shutdown */ 613 struct completion ln_rc_signal; 614 615 struct mutex ln_api_mutex; 616 struct mutex ln_lnd_mutex; 617 struct mutex ln_delay_mutex; 618 /* Have I called LNetNIInit myself? */ 619 int ln_niinit_self; 620 /* LNetNIInit/LNetNIFini counter */ 621 int ln_refcount; 622 /* shutdown in progress */ 623 int ln_shutdown; 624 625 int ln_routing; /* am I a router? */ 626 lnet_pid_t ln_pid; /* requested pid */ 627 /* uniquely identifies this ni in this epoch */ 628 __u64 ln_interface_cookie; 629 /* registered LNDs */ 630 struct list_head ln_lnds; 631 632 /* test protocol compatibility flags */ 633 int ln_testprotocompat; 634 635 /* 636 * 0 - load the NIs from the mod params 637 * 1 - do not load the NIs from the mod params 638 * Reverse logic to ensure that other calls to LNetNIInit 639 * need no change 640 */ 641 bool ln_nis_from_mod_params; 642 643 /* 644 * waitq for router checker. As long as there are no routes in 645 * the list, the router checker will sleep on this queue. when 646 * routes are added the thread will wake up 647 */ 648 wait_queue_head_t ln_rc_waitq; 649 650 } lnet_t; 651 652 #endif 653