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, 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__
45 #include <linux/lnet/linux/lib-types.h>
47 #include <linux/libcfs/libcfs.h>
48 #include <linux/list.h>
49 #include <linux/lnet/types.h>
51 #define WIRE_ATTR __attribute__((packed))
53 /* Packed version of lnet_process_id_t to transfer via network */
56 lnet_pid_t pid; /* node id / process id */
57 } WIRE_ATTR lnet_process_id_packed_t;
59 /* The wire handle's interface cookie only matches one network interface in
60 * one epoch (i.e. new cookie when the interface restarts or the node
61 * reboots). The object cookie only matches one object on that interface
62 * during that object's lifetime (i.e. no cookie re-use). */
64 __u64 wh_interface_cookie;
65 __u64 wh_object_cookie;
66 } WIRE_ATTR lnet_handle_wire_t;
76 /* The variant fields of the portals message header are aligned on an 8
77 * byte boundary in the message header. Note that all types used in these
78 * wire structs MUST be fixed size and the smaller types are placed at the
80 typedef struct lnet_ack {
81 lnet_handle_wire_t dst_wmd;
84 } WIRE_ATTR lnet_ack_t;
86 typedef struct lnet_put {
87 lnet_handle_wire_t ack_wmd;
92 } WIRE_ATTR lnet_put_t;
94 typedef struct lnet_get {
95 lnet_handle_wire_t return_wmd;
100 } WIRE_ATTR lnet_get_t;
102 typedef struct lnet_reply {
103 lnet_handle_wire_t dst_wmd;
104 } WIRE_ATTR lnet_reply_t;
106 typedef struct lnet_hello {
109 } WIRE_ATTR lnet_hello_t;
116 __u32 type; /* lnet_msg_type_t */
117 __u32 payload_length; /* payload data to follow */
118 /*<------__u64 aligned------->*/
126 } WIRE_ATTR lnet_hdr_t;
128 /* A HELLO message contains a magic number and protocol version
129 * code in the header's dest_nid, the peer's NID in the src_nid, and
130 * LNET_MSG_HELLO in the type field. All other common fields are zero
131 * (including payload_size; i.e. no payload).
132 * This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is
133 * running the same protocol and to find out its NID. These LNDs should
134 * exchange HELLO messages when a connection is first established. Individual
135 * LNDs can put whatever else they fancy in lnet_hdr_t::msg.
138 __u32 magic; /* LNET_PROTO_TCP_MAGIC */
139 __u16 version_major; /* increment on incompatible change */
140 __u16 version_minor; /* increment on compatible change */
141 } WIRE_ATTR lnet_magicversion_t;
143 /* PROTO MAGIC for LNDs */
144 #define LNET_PROTO_IB_MAGIC 0x0be91b91
145 #define LNET_PROTO_RA_MAGIC 0x0be91b92
146 #define LNET_PROTO_QSW_MAGIC 0x0be91b93
147 #define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */
148 #define LNET_PROTO_TCP_MAGIC 0xeebc0ded
149 #define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
150 #define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
151 #define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
152 #define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
154 /* Placeholder for a future "unified" protocol across all LNDs */
155 /* Current LNDs that receive a request with this magic will respond with a
156 * "stub" reply using their current protocol */
157 #define LNET_PROTO_MAGIC 0x45726963 /* ! */
160 #define LNET_PROTO_TCP_VERSION_MAJOR 1
161 #define LNET_PROTO_TCP_VERSION_MINOR 0
163 /* Acceptor connection request */
165 __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
166 __u32 acr_version; /* protocol version */
167 __u64 acr_nid; /* target NID */
168 } WIRE_ATTR lnet_acceptor_connreq_t;
170 #define LNET_PROTO_ACCEPTOR_VERSION 1
175 typedef struct lnet_msg {
176 struct list_head msg_activelist;
177 struct list_head msg_list; /* Q for credits/MD */
179 lnet_process_id_t msg_target;
180 /* where is it from, it's only for building event */
184 /* committed for sending */
185 unsigned int msg_tx_committed:1;
186 /* CPT # this message committed for sending */
187 unsigned int msg_tx_cpt:15;
188 /* committed for receiving */
189 unsigned int msg_rx_committed:1;
190 /* CPT # this message committed for receiving */
191 unsigned int msg_rx_cpt:15;
192 /* queued for tx credit */
193 unsigned int msg_tx_delayed:1;
194 /* queued for RX buffer */
195 unsigned int msg_rx_delayed:1;
196 /* ready for pending on RX delay list */
197 unsigned int msg_rx_ready_delay:1;
199 unsigned int msg_vmflush:1; /* VM trying to free memory */
200 unsigned int msg_target_is_router:1; /* sending to a router */
201 unsigned int msg_routing:1; /* being forwarded */
202 unsigned int msg_ack:1; /* ack on finalize (PUT) */
203 unsigned int msg_sending:1; /* outgoing message */
204 unsigned int msg_receiving:1; /* being received */
205 unsigned int msg_txcredit:1; /* taken an NI send credit */
206 unsigned int msg_peertxcredit:1; /* taken a peer send credit */
207 unsigned int msg_rtrcredit:1; /* taken a globel router credit */
208 unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
209 unsigned int msg_onactivelist:1; /* on the activelist */
211 struct lnet_peer *msg_txpeer; /* peer I'm sending to */
212 struct lnet_peer *msg_rxpeer; /* peer I received from */
215 struct lnet_libmd *msg_md;
217 unsigned int msg_len;
218 unsigned int msg_wanted;
219 unsigned int msg_offset;
220 unsigned int msg_niov;
221 struct iovec *msg_iov;
222 lnet_kiov_t *msg_kiov;
229 typedef struct lnet_libhandle {
230 struct list_head lh_hash_chain;
234 #define lh_entry(ptr, type, member) \
235 ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
237 typedef struct lnet_eq {
238 struct list_head eq_list;
239 lnet_libhandle_t eq_lh;
240 lnet_seq_t eq_enq_seq;
241 lnet_seq_t eq_deq_seq;
242 unsigned int eq_size;
243 lnet_eq_handler_t eq_callback;
244 lnet_event_t *eq_events;
245 int **eq_refs; /* percpt refcount for EQ */
248 typedef struct lnet_me {
249 struct list_head me_list;
250 lnet_libhandle_t me_lh;
251 lnet_process_id_t me_match_id;
252 unsigned int me_portal;
253 unsigned int me_pos; /* hash offset in mt_hash */
255 __u64 me_ignore_bits;
256 lnet_unlink_t me_unlink;
257 struct lnet_libmd *me_md;
260 typedef struct lnet_libmd {
261 struct list_head md_list;
262 lnet_libhandle_t md_lh;
265 unsigned int md_offset;
266 unsigned int md_length;
267 unsigned int md_max_size;
270 unsigned int md_options;
271 unsigned int md_flags;
274 unsigned int md_niov; /* # frags */
276 struct iovec iov[LNET_MAX_IOV];
277 lnet_kiov_t kiov[LNET_MAX_IOV];
281 #define LNET_MD_FLAG_ZOMBIE (1 << 0)
282 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
284 #ifdef LNET_USE_LIB_FREELIST
287 void *fl_objs; /* single contiguous array of objects */
288 int fl_nobjs; /* the number of them */
289 int fl_objsize; /* the size (including overhead) of each of them */
290 struct list_head fl_list; /* where they are enqueued */
295 struct list_head fo_list; /* enqueue on fl_list */
296 void *fo_contents; /* aligned contents */
301 /* info about peers we are trying to fail */
302 struct list_head tp_list; /* ln_test_peers */
303 lnet_nid_t tp_nid; /* matching nid */
304 unsigned int tp_threshold; /* # failures to simulate */
307 #define LNET_COOKIE_TYPE_MD 1
308 #define LNET_COOKIE_TYPE_ME 2
309 #define LNET_COOKIE_TYPE_EQ 3
310 #define LNET_COOKIE_TYPE_BITS 2
311 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
313 struct lnet_ni; /* forward ref */
315 typedef struct lnet_lnd
317 /* fields managed by portals */
318 struct list_head lnd_list; /* stash in the LND table */
319 int lnd_refcount; /* # active instances */
321 /* fields initialised by the LND */
322 unsigned int lnd_type;
324 int (*lnd_startup) (struct lnet_ni *ni);
325 void (*lnd_shutdown) (struct lnet_ni *ni);
326 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
328 /* In data movement APIs below, payload buffers are described as a set
329 * of 'niov' fragments which are...
331 * in virtual memory (struct iovec *iov != NULL)
333 * in pages (kernel only: plt_kiov_t *kiov != NULL).
334 * The LND may NOT overwrite these fragment descriptors.
335 * An 'offset' and may specify a byte offset within the set of
336 * fragments to start from
339 /* Start sending a preformatted message. 'private' is NULL for PUT and
340 * GET messages; otherwise this is a response to an incoming message
341 * and 'private' is the 'private' passed to lnet_parse(). Return
342 * non-zero for immediate failure, otherwise complete later with
344 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
346 /* Start receiving 'mlen' bytes of payload data, skipping the following
347 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
348 * lnet_parse(). Return non-zero for immedaite failure, otherwise
349 * complete later with lnet_finalize(). This also gives back a receive
350 * credit if the LND does flow control. */
351 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
352 int delayed, unsigned int niov,
353 struct iovec *iov, lnet_kiov_t *kiov,
354 unsigned int offset, unsigned int mlen, unsigned int rlen);
356 /* lnet_parse() has had to delay processing of this message
357 * (e.g. waiting for a forwarding buffer or send credits). Give the
358 * LND a chance to free urgently needed resources. If called, return 0
359 * for success and do NOT give back a receive credit; that has to wait
360 * until lnd_recv() gets called. On failure return < 0 and
361 * release resources; lnd_recv() will not be called. */
362 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
363 void **new_privatep);
365 /* notification of peer health */
366 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
368 /* query of peer aliveness */
369 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
371 /* accept a new connection */
372 int (*lnd_accept)(struct lnet_ni *ni, socket_t *sock);
376 #define LNET_NI_STATUS_UP 0x15aac0de
377 #define LNET_NI_STATUS_DOWN 0xdeadface
378 #define LNET_NI_STATUS_INVALID 0x00000000
383 } WIRE_ATTR lnet_ni_status_t;
385 struct lnet_tx_queue {
386 int tq_credits; /* # tx credits free */
387 int tq_credits_min; /* lowest it's been */
388 int tq_credits_max; /* total # tx credits */
389 struct list_head tq_delayed; /* delayed TXs */
392 #define LNET_MAX_INTERFACES 16
394 typedef struct lnet_ni {
396 struct list_head ni_list; /* chain on ln_nis */
397 struct list_head ni_cptlist; /* chain on ln_nis_cpt */
398 int ni_maxtxcredits; /* # tx credits */
399 /* # per-peer send credits */
400 int ni_peertxcredits;
401 /* # per-peer router buffer credits */
402 int ni_peerrtrcredits;
403 /* seconds to consider peer dead */
405 int ni_ncpts; /* number of CPTs */
406 __u32 *ni_cpts; /* bond NI on some CPTs */
407 lnet_nid_t ni_nid; /* interface's NID */
408 void *ni_data; /* instance-specific data */
409 lnd_t *ni_lnd; /* procedural interface */
410 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
411 int **ni_refs; /* percpt reference count */
412 long ni_last_alive; /* when I was last alive */
413 lnet_ni_status_t *ni_status; /* my health status */
414 /* equivalent interfaces to use */
415 char *ni_interfaces[LNET_MAX_INTERFACES];
418 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
420 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
421 * of old LNet, so there shouldn't be any compatibility issue */
422 #define LNET_PING_FEAT_INVAL (0) /* no feature */
423 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
424 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
426 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
427 LNET_PING_FEAT_NI_STATUS)
434 lnet_ni_status_t pi_ni[0];
435 } WIRE_ATTR lnet_ping_info_t;
437 /* router checker data, per router */
438 #define LNET_MAX_RTR_NIS 16
439 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
441 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
442 struct list_head rcd_list;
443 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
444 struct lnet_peer *rcd_gateway; /* reference to gateway */
445 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
448 typedef struct lnet_peer {
449 struct list_head lp_hashlist; /* chain on peer hash */
450 struct list_head lp_txq; /* messages blocking for tx credits */
451 struct list_head lp_rtrq; /* messages blocking for router credits */
452 struct list_head lp_rtr_list; /* chain on router list */
453 int lp_txcredits; /* # tx credits available */
454 int lp_mintxcredits; /* low water mark */
455 int lp_rtrcredits; /* # router credits */
456 int lp_minrtrcredits; /* low water mark */
457 unsigned int lp_alive:1; /* alive/dead? */
458 unsigned int lp_notify:1; /* notification outstanding? */
459 unsigned int lp_notifylnd:1; /* outstanding notification for LND? */
460 unsigned int lp_notifying:1; /* some thread is handling notification */
461 unsigned int lp_ping_notsent; /* SEND event outstanding from ping */
462 int lp_alive_count; /* # times router went dead<->alive */
463 long lp_txqnob; /* bytes queued for sending */
464 cfs_time_t lp_timestamp; /* time of last aliveness news */
465 cfs_time_t lp_ping_timestamp; /* time of last ping attempt */
466 cfs_time_t lp_ping_deadline; /* != 0 if ping reply expected */
467 cfs_time_t lp_last_alive; /* when I was last alive */
468 cfs_time_t lp_last_query; /* when lp_ni was queried last time */
469 lnet_ni_t *lp_ni; /* interface peer is on */
470 lnet_nid_t lp_nid; /* peer's NID */
471 int lp_refcount; /* # refs */
472 int lp_cpt; /* CPT this peer attached on */
473 /* # refs from lnet_route_t::lr_gateway */
475 /* returned RC ping features */
476 unsigned int lp_ping_feats;
477 struct list_head lp_routes; /* routers on this peer */
478 lnet_rc_data_t *lp_rcd; /* router checker state */
482 #define LNET_PEER_HASH_BITS 9
483 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
485 /* peer hash table */
486 struct lnet_peer_table {
487 int pt_version; /* /proc validity stamp */
488 int pt_number; /* # peers extant */
489 struct list_head pt_deathrow; /* zombie peers */
490 struct list_head *pt_hash; /* NID->peer hash */
493 /* peer aliveness is enabled only on routers for peers in a network where the
494 * lnet_ni_t::ni_peertimeout has been set to a positive value */
495 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
496 (lp)->lp_ni->ni_peertimeout > 0)
499 struct list_head lr_list; /* chain on net */
500 struct list_head lr_gwlist; /* chain on gateway */
501 lnet_peer_t *lr_gateway; /* router node */
502 __u32 lr_net; /* remote network number */
503 int lr_seq; /* sequence for round-robin */
504 unsigned int lr_downis; /* number of down NIs */
505 unsigned int lr_hops; /* how far I am */
506 unsigned int lr_priority; /* route priority */
509 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
510 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
511 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
514 struct list_head lrn_list; /* chain on ln_remote_nets_hash */
515 struct list_head lrn_routes; /* routes to me */
516 __u32 lrn_net; /* my net number */
520 struct list_head rbp_bufs; /* my free buffer pool */
521 struct list_head rbp_msgs; /* messages blocking for a buffer */
522 int rbp_npages; /* # pages in each buffer */
523 int rbp_nbuffers; /* # buffers */
524 int rbp_credits; /* # free buffers / blocked messages */
525 int rbp_mincredits; /* low water mark */
529 struct list_head rb_list; /* chain on rbp_bufs */
530 lnet_rtrbufpool_t *rb_pool; /* owning pool */
531 lnet_kiov_t rb_kiov[0]; /* the buffer space */
546 } WIRE_ATTR lnet_counters_t;
548 #define LNET_PEER_HASHSIZE 503 /* prime! */
550 #define LNET_NRBPOOLS 3 /* # different router buffer pools */
553 /* Didn't match anything */
554 LNET_MATCHMD_NONE = (1 << 0),
556 LNET_MATCHMD_OK = (1 << 1),
557 /* Must be discarded */
558 LNET_MATCHMD_DROP = (1 << 2),
559 /* match and buffer is exhausted */
560 LNET_MATCHMD_EXHAUSTED = (1 << 3),
562 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
565 /* Options for lnet_portal_t::ptl_options */
566 #define LNET_PTL_LAZY (1 << 0)
567 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
568 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
570 /* parameter for matching operations (GET, PUT) */
571 struct lnet_match_info {
573 lnet_process_id_t mi_id;
575 unsigned int mi_portal;
576 unsigned int mi_rlength;
577 unsigned int mi_roffset;
580 /* ME hash of RDMA portal */
581 #define LNET_MT_HASH_BITS 8
582 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
583 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
584 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
585 * the last entry is reserved for MEs with ignore-bits */
586 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
587 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
588 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
589 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
590 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
591 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
592 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
594 /* portal match table */
595 struct lnet_match_table {
596 /* reserved for upcoming patches, CPU partition ID */
598 unsigned int mt_portal; /* portal index */
599 /* match table is set as "enabled" if there's non-exhausted MD
600 * attached on mt_mhash, it's only valide for wildcard portal */
601 unsigned int mt_enabled;
602 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
603 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
604 struct list_head *mt_mhash; /* matching hash */
607 /* these are only useful for wildcard portal */
608 /* Turn off message rotor for wildcard portals */
609 #define LNET_PTL_ROTOR_OFF 0
610 /* round-robin dispatch all PUT messages for wildcard portals */
611 #define LNET_PTL_ROTOR_ON 1
612 /* round-robin dispatch routed PUT message for wildcard portals */
613 #define LNET_PTL_ROTOR_RR_RT 2
614 /* dispatch routed PUT message by hashing source NID for wildcard portals */
615 #define LNET_PTL_ROTOR_HASH_RT 3
617 typedef struct lnet_portal {
619 unsigned int ptl_index; /* portal ID, reserved */
620 /* flags on this portal: lazy, unique... */
621 unsigned int ptl_options;
622 /* list of messages which are stealing buffer */
623 struct list_head ptl_msg_stealing;
624 /* messages blocking for MD */
625 struct list_head ptl_msg_delayed;
626 /* Match table for each CPT */
627 struct lnet_match_table **ptl_mtables;
628 /* spread rotor of incoming "PUT" */
630 /* # active entries for this portal */
632 /* array of active entries' cpu-partition-id */
636 #define LNET_LH_HASH_BITS 12
637 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
638 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
640 /* resource container (ME, MD, EQ) */
641 struct lnet_res_container {
642 unsigned int rec_type; /* container type */
643 __u64 rec_lh_cookie; /* cookie generator */
644 struct list_head rec_active; /* active resource list */
645 struct list_head *rec_lh_hash; /* handle hash */
646 #ifdef LNET_USE_LIB_FREELIST
647 lnet_freelist_t rec_freelist; /* freelist for resources */
651 /* message container */
652 struct lnet_msg_container {
653 int msc_init; /* initialized or not */
654 /* max # threads finalizing */
656 /* msgs waiting to complete finalizing */
657 struct list_head msc_finalizing;
658 struct list_head msc_active; /* active message list */
659 /* threads doing finalization */
660 void **msc_finalizers;
661 #ifdef LNET_USE_LIB_FREELIST
662 lnet_freelist_t msc_freelist; /* freelist for messages */
666 /* Router Checker states */
667 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
668 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
669 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
673 /* CPU partition table of LNet */
674 struct cfs_cpt_table *ln_cpt_table;
675 /* number of CPTs in ln_cpt_table */
676 unsigned int ln_cpt_number;
677 unsigned int ln_cpt_bits;
679 /* protect LNet resources (ME/MD/EQ) */
680 struct cfs_percpt_lock *ln_res_lock;
683 /* the vector of portals */
684 lnet_portal_t **ln_portals;
685 /* percpt ME containers */
686 struct lnet_res_container **ln_me_containers;
687 /* percpt MD container */
688 struct lnet_res_container **ln_md_containers;
690 /* Event Queue container */
691 struct lnet_res_container ln_eq_container;
692 wait_queue_head_t ln_eq_waitq;
693 spinlock_t ln_eq_wait_lock;
694 unsigned int ln_remote_nets_hbits;
696 /* protect NI, peer table, credits, routers, rtrbuf... */
697 struct cfs_percpt_lock *ln_net_lock;
698 /* percpt message containers for active/finalizing/freed message */
699 struct lnet_msg_container **ln_msg_containers;
700 lnet_counters_t **ln_counters;
701 struct lnet_peer_table **ln_peer_tables;
702 /* failure simulation */
703 struct list_head ln_test_peers;
705 struct list_head ln_nis; /* LND instances */
706 /* NIs bond on specific CPT(s) */
707 struct list_head ln_nis_cpt;
708 /* dying LND instances */
709 struct list_head ln_nis_zombie;
710 lnet_ni_t *ln_loni; /* the loopback NI */
711 /* NI to wait for events in */
712 lnet_ni_t *ln_eq_waitni;
714 /* remote networks with routes to them */
715 struct list_head *ln_remote_nets_hash;
717 __u64 ln_remote_nets_version;
718 /* list of all known routers */
719 struct list_head ln_routers;
721 __u64 ln_routers_version;
722 /* percpt router buffer pools */
723 lnet_rtrbufpool_t **ln_rtrpools;
725 lnet_handle_md_t ln_ping_target_md;
726 lnet_handle_eq_t ln_ping_target_eq;
727 lnet_ping_info_t *ln_ping_info;
729 /* router checker startup/shutdown state */
731 /* router checker's event queue */
732 lnet_handle_eq_t ln_rc_eqh;
733 /* rcd still pending on net */
734 struct list_head ln_rcd_deathrow;
735 /* rcd ready for free */
736 struct list_head ln_rcd_zombie;
737 /* serialise startup/shutdown */
738 struct semaphore ln_rc_signal;
740 struct mutex ln_api_mutex;
741 struct mutex ln_lnd_mutex;
742 int ln_init; /* LNetInit() called? */
743 /* Have I called LNetNIInit myself? */
745 /* LNetNIInit/LNetNIFini counter */
747 /* shutdown in progress */
750 int ln_routing; /* am I a router? */
751 lnet_pid_t ln_pid; /* requested pid */
752 /* uniquely identifies this ni in this epoch */
753 __u64 ln_interface_cookie;
754 /* registered LNDs */
755 struct list_head ln_lnds;
757 /* space for network names */
758 char *ln_network_tokens;
759 int ln_network_tokens_nob;
760 /* test protocol compatibility flags */
761 int ln_testprotocompat;