4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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).
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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lnet/include/lnet/lib-types.h
38 * Types used by the library side routines that do not need to be
39 * exposed to the user application
42 #ifndef __LNET_LIB_TYPES_H__
43 #define __LNET_LIB_TYPES_H__
46 # include <linux/uio.h>
47 # include <linux/types.h>
48 #else /* !__KERNEL__ */
49 # include <sys/types.h>
50 #endif /* __KERNEL__ */
52 #include <libcfs/libcfs.h>
53 #include <libcfs/list.h>
54 #include <lnet/types.h>
55 #include <lnet/lnetctl.h>
57 #define WIRE_ATTR __attribute__((packed))
59 /* Packed version of lnet_process_id_t to transfer via network */
62 lnet_pid_t pid; /* node id / process id */
63 } WIRE_ATTR lnet_process_id_packed_t;
65 /* The wire handle's interface cookie only matches one network interface in
66 * one epoch (i.e. new cookie when the interface restarts or the node
67 * reboots). The object cookie only matches one object on that interface
68 * during that object's lifetime (i.e. no cookie re-use). */
70 __u64 wh_interface_cookie;
71 __u64 wh_object_cookie;
72 } WIRE_ATTR lnet_handle_wire_t;
82 /* The variant fields of the portals message header are aligned on an 8
83 * byte boundary in the message header. Note that all types used in these
84 * wire structs MUST be fixed size and the smaller types are placed at the
86 typedef struct lnet_ack {
87 lnet_handle_wire_t dst_wmd;
90 } WIRE_ATTR lnet_ack_t;
92 typedef struct lnet_put {
93 lnet_handle_wire_t ack_wmd;
98 } WIRE_ATTR lnet_put_t;
100 typedef struct lnet_get {
101 lnet_handle_wire_t return_wmd;
106 } WIRE_ATTR lnet_get_t;
108 typedef struct lnet_reply {
109 lnet_handle_wire_t dst_wmd;
110 } WIRE_ATTR lnet_reply_t;
112 typedef struct lnet_hello {
115 } WIRE_ATTR lnet_hello_t;
122 __u32 type; /* lnet_msg_type_t */
123 __u32 payload_length; /* payload data to follow */
124 /*<------__u64 aligned------->*/
132 } WIRE_ATTR lnet_hdr_t;
134 /* A HELLO message contains a magic number and protocol version
135 * code in the header's dest_nid, the peer's NID in the src_nid, and
136 * LNET_MSG_HELLO in the type field. All other common fields are zero
137 * (including payload_size; i.e. no payload).
138 * This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is
139 * running the same protocol and to find out its NID. These LNDs should
140 * exchange HELLO messages when a connection is first established. Individual
141 * LNDs can put whatever else they fancy in lnet_hdr_t::msg.
144 __u32 magic; /* LNET_PROTO_TCP_MAGIC */
145 __u16 version_major; /* increment on incompatible change */
146 __u16 version_minor; /* increment on compatible change */
147 } WIRE_ATTR lnet_magicversion_t;
149 /* PROTO MAGIC for LNDs */
150 #define LNET_PROTO_IB_MAGIC 0x0be91b91
151 #define LNET_PROTO_RA_MAGIC 0x0be91b92
152 #define LNET_PROTO_QSW_MAGIC 0x0be91b93
153 #define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */
154 #define LNET_PROTO_TCP_MAGIC 0xeebc0ded
155 #define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
156 #define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
157 #define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
158 #define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
160 /* Placeholder for a future "unified" protocol across all LNDs */
161 /* Current LNDs that receive a request with this magic will respond with a
162 * "stub" reply using their current protocol */
163 #define LNET_PROTO_MAGIC 0x45726963 /* ! */
166 #define LNET_PROTO_TCP_VERSION_MAJOR 1
167 #define LNET_PROTO_TCP_VERSION_MINOR 0
169 /* Acceptor connection request */
171 __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
172 __u32 acr_version; /* protocol version */
173 __u64 acr_nid; /* target NID */
174 } WIRE_ATTR lnet_acceptor_connreq_t;
176 #define LNET_PROTO_ACCEPTOR_VERSION 1
181 typedef struct lnet_msg {
182 struct list_head msg_activelist;
183 struct list_head msg_list; /* Q for credits/MD */
185 lnet_process_id_t msg_target;
186 /* where is it from, it's only for building event */
190 /* commited for sending */
191 unsigned int msg_tx_committed:1;
192 /* CPT # this message committed for sending */
193 unsigned int msg_tx_cpt:15;
194 /* commited for receiving */
195 unsigned int msg_rx_committed:1;
196 /* CPT # this message committed for receiving */
197 unsigned int msg_rx_cpt:15;
198 /* queued for tx credit */
199 unsigned int msg_tx_delayed:1;
200 /* queued for RX buffer */
201 unsigned int msg_rx_delayed:1;
202 /* ready for pending on RX delay list */
203 unsigned int msg_rx_ready_delay:1;
205 unsigned int msg_vmflush:1; /* VM trying to free memory */
206 unsigned int msg_target_is_router:1; /* sending to a router */
207 unsigned int msg_routing:1; /* being forwarded */
208 unsigned int msg_ack:1; /* ack on finalize (PUT) */
209 unsigned int msg_sending:1; /* outgoing message */
210 unsigned int msg_receiving:1; /* being received */
211 unsigned int msg_txcredit:1; /* taken an NI send credit */
212 unsigned int msg_peertxcredit:1; /* taken a peer send credit */
213 unsigned int msg_rtrcredit:1; /* taken a globel router credit */
214 unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
215 unsigned int msg_onactivelist:1; /* on the activelist */
216 unsigned int msg_rdma_get:1;
218 struct lnet_peer *msg_txpeer; /* peer I'm sending to */
219 struct lnet_peer *msg_rxpeer; /* peer I received from */
222 struct lnet_libmd *msg_md;
224 unsigned int msg_len;
225 unsigned int msg_wanted;
226 unsigned int msg_offset;
227 unsigned int msg_niov;
228 struct iovec *msg_iov;
229 lnet_kiov_t *msg_kiov;
236 typedef struct lnet_libhandle {
237 struct list_head lh_hash_chain;
241 #define lh_entry(ptr, type, member) \
242 ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
244 typedef struct lnet_eq {
245 struct list_head eq_list;
246 lnet_libhandle_t eq_lh;
247 lnet_seq_t eq_enq_seq;
248 lnet_seq_t eq_deq_seq;
249 unsigned int eq_size;
250 lnet_eq_handler_t eq_callback;
251 lnet_event_t *eq_events;
252 int **eq_refs; /* percpt refcount for EQ */
255 typedef struct lnet_me {
256 struct list_head me_list;
257 lnet_libhandle_t me_lh;
258 lnet_process_id_t me_match_id;
259 unsigned int me_portal;
260 unsigned int me_pos; /* hash offset in mt_hash */
262 __u64 me_ignore_bits;
263 lnet_unlink_t me_unlink;
264 struct lnet_libmd *me_md;
267 typedef struct lnet_libmd {
268 struct list_head md_list;
269 lnet_libhandle_t md_lh;
272 unsigned int md_offset;
273 unsigned int md_length;
274 unsigned int md_max_size;
277 unsigned int md_options;
278 unsigned int md_flags;
281 unsigned int md_niov; /* # frags */
283 struct iovec iov[LNET_MAX_IOV];
284 lnet_kiov_t kiov[LNET_MAX_IOV];
288 #define LNET_MD_FLAG_ZOMBIE (1 << 0)
289 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
290 #define LNET_MD_FLAG_ABORTED (1 << 2)
293 /* info about peers we are trying to fail */
294 struct list_head tp_list; /* ln_test_peers */
295 lnet_nid_t tp_nid; /* matching nid */
296 unsigned int tp_threshold; /* # failures to simulate */
299 #define LNET_COOKIE_TYPE_MD 1
300 #define LNET_COOKIE_TYPE_ME 2
301 #define LNET_COOKIE_TYPE_EQ 3
302 #define LNET_COOKIE_TYPE_BITS 2
303 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
305 struct lnet_ni; /* forward ref */
307 typedef struct lnet_lnd
309 /* fields managed by portals */
310 struct list_head lnd_list; /* stash in the LND table */
311 int lnd_refcount; /* # active instances */
313 /* fields initialized by the LND */
316 int (*lnd_startup) (struct lnet_ni *ni);
317 void (*lnd_shutdown) (struct lnet_ni *ni);
318 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
320 /* In data movement APIs below, payload buffers are described as a set
321 * of 'niov' fragments which are...
323 * in virtual memory (struct iovec *iov != NULL)
325 * in pages (kernel only: plt_kiov_t *kiov != NULL).
326 * The LND may NOT overwrite these fragment descriptors.
327 * An 'offset' and may specify a byte offset within the set of
328 * fragments to start from
331 /* Start sending a preformatted message. 'private' is NULL for PUT and
332 * GET messages; otherwise this is a response to an incoming message
333 * and 'private' is the 'private' passed to lnet_parse(). Return
334 * non-zero for immediate failure, otherwise complete later with
336 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
338 /* Start receiving 'mlen' bytes of payload data, skipping the following
339 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
340 * lnet_parse(). Return non-zero for immedaite failure, otherwise
341 * complete later with lnet_finalize(). This also gives back a receive
342 * credit if the LND does flow control. */
343 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
344 int delayed, unsigned int niov,
345 struct iovec *iov, lnet_kiov_t *kiov,
346 unsigned int offset, unsigned int mlen, unsigned int rlen);
348 /* lnet_parse() has had to delay processing of this message
349 * (e.g. waiting for a forwarding buffer or send credits). Give the
350 * LND a chance to free urgently needed resources. If called, return 0
351 * for success and do NOT give back a receive credit; that has to wait
352 * until lnd_recv() gets called. On failure return < 0 and
353 * release resources; lnd_recv() will not be called. */
354 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
355 void **new_privatep);
357 /* notification of peer health */
358 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
360 /* query of peer aliveness */
361 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
363 /* accept a new connection */
364 int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
367 #define LNET_NI_STATUS_UP 0x15aac0de
368 #define LNET_NI_STATUS_DOWN 0xdeadface
369 #define LNET_NI_STATUS_INVALID 0x00000000
374 } WIRE_ATTR lnet_ni_status_t;
376 struct lnet_tx_queue {
377 int tq_credits; /* # tx credits free */
378 int tq_credits_min; /* lowest it's been */
379 int tq_credits_max; /* total # tx credits */
380 struct list_head tq_delayed; /* delayed TXs */
383 #define LNET_MAX_INTERFACES 16
385 typedef struct lnet_ni {
387 struct list_head ni_list; /* chain on ln_nis */
388 struct list_head ni_cptlist; /* chain on ln_nis_cpt */
389 int ni_maxtxcredits; /* # tx credits */
390 /* # per-peer send credits */
391 int ni_peertxcredits;
392 /* # per-peer router buffer credits */
393 int ni_peerrtrcredits;
394 /* seconds to consider peer dead */
396 int ni_ncpts; /* number of CPTs */
397 __u32 *ni_cpts; /* bond NI on some CPTs */
398 lnet_nid_t ni_nid; /* interface's NID */
399 void *ni_data; /* instance-specific data */
400 lnd_t *ni_lnd; /* procedural interface */
401 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
402 int **ni_refs; /* percpt reference count */
403 long ni_last_alive; /* when I was last alive */
404 lnet_ni_status_t *ni_status; /* my health status */
405 /* equivalent interfaces to use */
406 char *ni_interfaces[LNET_MAX_INTERFACES];
409 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
411 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
412 * of old LNet, so there shouldn't be any compatibility issue */
413 #define LNET_PING_FEAT_INVAL (0) /* no feature */
414 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
415 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
416 #define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */
418 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
419 LNET_PING_FEAT_NI_STATUS)
426 lnet_ni_status_t pi_ni[0];
427 } WIRE_ATTR lnet_ping_info_t;
429 /* router checker data, per router */
430 #define LNET_MAX_RTR_NIS 16
431 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
433 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
434 struct list_head rcd_list;
435 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
436 struct lnet_peer *rcd_gateway; /* reference to gateway */
437 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
440 typedef struct lnet_peer {
441 /* chain on peer hash */
442 struct list_head lp_hashlist;
443 /* messages blocking for tx credits */
444 struct list_head lp_txq;
445 /* messages blocking for router credits */
446 struct list_head lp_rtrq;
447 /* chain on router list */
448 struct list_head lp_rtr_list;
449 /* # tx credits available */
453 /* # router credits */
456 int lp_minrtrcredits;
458 unsigned int lp_alive:1;
459 /* notification outstanding? */
460 unsigned int lp_notify:1;
461 /* outstanding notification for LND? */
462 unsigned int lp_notifylnd:1;
463 /* some thread is handling notification */
464 unsigned int lp_notifying:1;
465 /* SEND event outstanding from ping */
466 unsigned int lp_ping_notsent;
467 /* # times router went dead<->alive */
469 /* bytes queued for sending */
471 /* time of last aliveness news */
472 cfs_time_t lp_timestamp;
473 /* time of last ping attempt */
474 cfs_time_t lp_ping_timestamp;
475 /* != 0 if ping reply expected */
476 cfs_time_t lp_ping_deadline;
477 /* when I was last alive */
478 cfs_time_t lp_last_alive;
479 /* when lp_ni was queried last time */
480 cfs_time_t lp_last_query;
481 /* interface peer is on */
483 lnet_nid_t lp_nid; /* peer's NID */
484 int lp_refcount; /* # refs */
485 int lp_cpt; /* CPT this peer attached on */
486 /* # refs from lnet_route_t::lr_gateway */
488 /* returned RC ping features */
489 unsigned int lp_ping_feats;
490 struct list_head lp_routes; /* routers on this peer */
491 lnet_rc_data_t *lp_rcd; /* router checker state */
495 #define LNET_PEER_HASH_BITS 9
496 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
498 /* peer hash table */
499 struct lnet_peer_table {
500 int pt_version; /* /proc validity stamp */
501 int pt_number; /* # peers extant */
502 int pt_zombies; /* # zombies to go to deathrow
503 * (and not there yet) */
504 struct list_head pt_deathrow; /* zombie peers */
505 struct list_head *pt_hash; /* NID->peer hash */
508 /* peer aliveness is enabled only on routers for peers in a network where the
509 * lnet_ni_t::ni_peertimeout has been set to a positive value */
510 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
511 (lp)->lp_ni->ni_peertimeout > 0)
514 struct list_head lr_list; /* chain on net */
515 struct list_head lr_gwlist; /* chain on gateway */
516 lnet_peer_t *lr_gateway; /* router node */
517 __u32 lr_net; /* remote network number */
518 int lr_seq; /* sequence for round-robin */
519 unsigned int lr_downis; /* number of down NIs */
520 unsigned int lr_hops; /* how far I am */
521 unsigned int lr_priority; /* route priority */
524 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
525 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
526 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
529 /* chain on ln_remote_nets_hash */
530 struct list_head lrn_list;
532 struct list_head lrn_routes;
537 /** lnet message has credit and can be submitted to lnd for send/receive */
538 #define LNET_CREDIT_OK 0
539 /** lnet message is waiting for credit */
540 #define LNET_CREDIT_WAIT 1
543 /* my free buffer pool */
544 struct list_head rbp_bufs;
545 /* messages blocking for a buffer */
546 struct list_head rbp_msgs;
547 /* # pages in each buffer */
551 /* # free buffers / blocked messages */
558 struct list_head rb_list; /* chain on rbp_bufs */
559 lnet_rtrbufpool_t *rb_pool; /* owning pool */
560 lnet_kiov_t rb_kiov[0]; /* the buffer space */
563 typedef struct lnet_counters {
575 } WIRE_ATTR lnet_counters_t;
577 #define LNET_PEER_HASHSIZE 503 /* prime! */
579 #define LNET_TINY_BUF_IDX 0
580 #define LNET_SMALL_BUF_IDX 1
581 #define LNET_LARGE_BUF_IDX 2
583 /* # different router buffer pools */
584 #define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1)
587 /* Didn't match anything */
588 LNET_MATCHMD_NONE = (1 << 0),
590 LNET_MATCHMD_OK = (1 << 1),
591 /* Must be discarded */
592 LNET_MATCHMD_DROP = (1 << 2),
593 /* match and buffer is exhausted */
594 LNET_MATCHMD_EXHAUSTED = (1 << 3),
596 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
599 /* Options for lnet_portal_t::ptl_options */
600 #define LNET_PTL_LAZY (1 << 0)
601 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
602 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
604 /* parameter for matching operations (GET, PUT) */
605 struct lnet_match_info {
607 lnet_process_id_t mi_id;
609 unsigned int mi_portal;
610 unsigned int mi_rlength;
611 unsigned int mi_roffset;
614 /* ME hash of RDMA portal */
615 #define LNET_MT_HASH_BITS 8
616 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
617 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
618 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
619 * the last entry is reserved for MEs with ignore-bits */
620 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
621 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
622 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
623 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
624 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
625 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
626 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
628 /* portal match table */
629 struct lnet_match_table {
630 /* reserved for upcoming patches, CPU partition ID */
632 unsigned int mt_portal; /* portal index */
633 /* match table is set as "enabled" if there's non-exhausted MD
634 * attached on mt_mhash, it's only valide for wildcard portal */
635 unsigned int mt_enabled;
636 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
637 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
638 struct list_head *mt_mhash; /* matching hash */
641 /* these are only useful for wildcard portal */
642 /* Turn off message rotor for wildcard portals */
643 #define LNET_PTL_ROTOR_OFF 0
644 /* round-robin dispatch all PUT messages for wildcard portals */
645 #define LNET_PTL_ROTOR_ON 1
646 /* round-robin dispatch routed PUT message for wildcard portals */
647 #define LNET_PTL_ROTOR_RR_RT 2
648 /* dispatch routed PUT message by hashing source NID for wildcard portals */
649 #define LNET_PTL_ROTOR_HASH_RT 3
651 typedef struct lnet_portal {
653 unsigned int ptl_index; /* portal ID, reserved */
654 /* flags on this portal: lazy, unique... */
655 unsigned int ptl_options;
656 /* list of messags which are stealing buffer */
657 struct list_head ptl_msg_stealing;
658 /* messages blocking for MD */
659 struct list_head ptl_msg_delayed;
660 /* Match table for each CPT */
661 struct lnet_match_table **ptl_mtables;
662 /* spread rotor of incoming "PUT" */
663 unsigned int ptl_rotor;
664 /* # active entries for this portal */
666 /* array of active entries' cpu-partition-id */
670 #define LNET_LH_HASH_BITS 12
671 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
672 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
674 /* resource container (ME, MD, EQ) */
675 struct lnet_res_container {
676 unsigned int rec_type; /* container type */
677 __u64 rec_lh_cookie; /* cookie generator */
678 struct list_head rec_active; /* active resource list */
679 struct list_head *rec_lh_hash; /* handle hash */
682 /* message container */
683 struct lnet_msg_container {
684 int msc_init; /* initialized or not */
685 /* max # threads finalizing */
687 /* msgs waiting to complete finalizing */
688 struct list_head msc_finalizing;
689 struct list_head msc_active; /* active message list */
690 /* threads doing finalization */
691 void **msc_finalizers;
694 /* Router Checker states */
695 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
696 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
697 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
701 /* CPU partition table of LNet */
702 struct cfs_cpt_table *ln_cpt_table;
703 /* number of CPTs in ln_cpt_table */
704 unsigned int ln_cpt_number;
705 unsigned int ln_cpt_bits;
707 /* protect LNet resources (ME/MD/EQ) */
708 struct cfs_percpt_lock *ln_res_lock;
711 /* the vector of portals */
712 lnet_portal_t **ln_portals;
713 /* percpt ME containers */
714 struct lnet_res_container **ln_me_containers;
715 /* percpt MD container */
716 struct lnet_res_container **ln_md_containers;
718 /* Event Queue container */
719 struct lnet_res_container ln_eq_container;
720 wait_queue_head_t ln_eq_waitq;
721 spinlock_t ln_eq_wait_lock;
723 unsigned int ln_remote_nets_hbits;
725 /* protect NI, peer table, credits, routers, rtrbuf... */
726 struct cfs_percpt_lock *ln_net_lock;
727 /* percpt message containers for active/finalizing/freed message */
728 struct lnet_msg_container **ln_msg_containers;
729 lnet_counters_t **ln_counters;
730 struct lnet_peer_table **ln_peer_tables;
731 /* failure simulation */
732 struct list_head ln_test_peers;
733 struct list_head ln_drop_rules;
734 struct list_head ln_delay_rules;
736 struct list_head ln_nis; /* LND instances */
737 /* NIs bond on specific CPT(s) */
738 struct list_head ln_nis_cpt;
739 /* dying LND instances */
740 struct list_head ln_nis_zombie;
741 lnet_ni_t *ln_loni; /* the loopback NI */
743 /* remote networks with routes to them */
744 struct list_head *ln_remote_nets_hash;
746 __u64 ln_remote_nets_version;
747 /* list of all known routers */
748 struct list_head ln_routers;
750 __u64 ln_routers_version;
751 /* percpt router buffer pools */
752 lnet_rtrbufpool_t **ln_rtrpools;
754 lnet_handle_md_t ln_ping_target_md;
755 lnet_handle_eq_t ln_ping_target_eq;
756 lnet_ping_info_t *ln_ping_info;
758 /* router checker startup/shutdown state */
760 /* router checker's event queue */
761 lnet_handle_eq_t ln_rc_eqh;
762 /* rcd still pending on net */
763 struct list_head ln_rcd_deathrow;
764 /* rcd ready for free */
765 struct list_head ln_rcd_zombie;
766 /* serialise startup/shutdown */
767 struct semaphore ln_rc_signal;
769 struct mutex ln_api_mutex;
770 struct mutex ln_lnd_mutex;
771 /* Have I called LNetNIInit myself? */
773 /* LNetNIInit/LNetNIFini counter */
775 /* shutdown in progress */
778 int ln_routing; /* am I a router? */
779 lnet_pid_t ln_pid; /* requested pid */
780 /* uniquely identifies this ni in this epoch */
781 __u64 ln_interface_cookie;
782 /* registered LNDs */
783 struct list_head ln_lnds;
785 /* test protocol compatibility flags */
786 int ln_testprotocompat;
788 /* 0 - load the NIs from the mod params
789 * 1 - do not load the NIs from the mod params
790 * Reverse logic to ensure that other calls to LNetNIInit
793 bool ln_nis_from_mod_params;
795 /* waitq for router checker. As long as there are no routes in
796 * the list, the router checker will sleep on this queue. when
797 * routes are added the thread will wake up */
798 wait_queue_head_t ln_rc_waitq;