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