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, 2013, 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 #if defined(__linux__)
46 #include <lnet/linux/lib-types.h>
47 #elif defined(__APPLE__)
48 #include <lnet/darwin/lib-types.h>
49 #elif defined(__WINNT__)
50 #include <lnet/winnt/lib-types.h>
51 #include <libcfs/libcfs_pack.h>
52 #include <libcfs/libcfs_unpack.h>
54 #error Unsupported Operating System
57 #include <libcfs/libcfs.h>
58 #include <libcfs/list.h>
59 #include <lnet/types.h>
61 #define WIRE_ATTR __attribute__((packed))
63 /* Packed version of lnet_process_id_t to transfer via network */
66 lnet_pid_t pid; /* node id / process id */
67 } WIRE_ATTR lnet_process_id_packed_t;
69 /* The wire handle's interface cookie only matches one network interface in
70 * one epoch (i.e. new cookie when the interface restarts or the node
71 * reboots). The object cookie only matches one object on that interface
72 * during that object's lifetime (i.e. no cookie re-use). */
74 __u64 wh_interface_cookie;
75 __u64 wh_object_cookie;
76 } WIRE_ATTR lnet_handle_wire_t;
86 /* The variant fields of the portals message header are aligned on an 8
87 * byte boundary in the message header. Note that all types used in these
88 * wire structs MUST be fixed size and the smaller types are placed at the
90 typedef struct lnet_ack {
91 lnet_handle_wire_t dst_wmd;
94 } WIRE_ATTR lnet_ack_t;
96 typedef struct lnet_put {
97 lnet_handle_wire_t ack_wmd;
102 } WIRE_ATTR lnet_put_t;
104 typedef struct lnet_get {
105 lnet_handle_wire_t return_wmd;
110 } WIRE_ATTR lnet_get_t;
112 typedef struct lnet_reply {
113 lnet_handle_wire_t dst_wmd;
114 } WIRE_ATTR lnet_reply_t;
116 typedef struct lnet_hello {
119 } WIRE_ATTR lnet_hello_t;
126 __u32 type; /* lnet_msg_type_t */
127 __u32 payload_length; /* payload data to follow */
128 /*<------__u64 aligned------->*/
136 } WIRE_ATTR lnet_hdr_t;
138 /* A HELLO message contains a magic number and protocol version
139 * code in the header's dest_nid, the peer's NID in the src_nid, and
140 * LNET_MSG_HELLO in the type field. All other common fields are zero
141 * (including payload_size; i.e. no payload).
142 * This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is
143 * running the same protocol and to find out its NID. These LNDs should
144 * exchange HELLO messages when a connection is first established. Individual
145 * LNDs can put whatever else they fancy in lnet_hdr_t::msg.
148 __u32 magic; /* LNET_PROTO_TCP_MAGIC */
149 __u16 version_major; /* increment on incompatible change */
150 __u16 version_minor; /* increment on compatible change */
151 } WIRE_ATTR lnet_magicversion_t;
153 /* PROTO MAGIC for LNDs */
154 #define LNET_PROTO_IB_MAGIC 0x0be91b91
155 #define LNET_PROTO_RA_MAGIC 0x0be91b92
156 #define LNET_PROTO_QSW_MAGIC 0x0be91b93
157 #define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */
158 #define LNET_PROTO_TCP_MAGIC 0xeebc0ded
159 #define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
160 #define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
161 #define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
162 #define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
164 /* Placeholder for a future "unified" protocol across all LNDs */
165 /* Current LNDs that receive a request with this magic will respond with a
166 * "stub" reply using their current protocol */
167 #define LNET_PROTO_MAGIC 0x45726963 /* ! */
170 #define LNET_PROTO_TCP_VERSION_MAJOR 1
171 #define LNET_PROTO_TCP_VERSION_MINOR 0
173 /* Acceptor connection request */
175 __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
176 __u32 acr_version; /* protocol version */
177 __u64 acr_nid; /* target NID */
178 } WIRE_ATTR lnet_acceptor_connreq_t;
180 #define LNET_PROTO_ACCEPTOR_VERSION 1
185 typedef struct lnet_msg {
186 struct list_head msg_activelist;
187 struct list_head msg_list; /* Q for credits/MD */
189 lnet_process_id_t msg_target;
190 /* where is it from, it's only for building event */
194 /* commited for sending */
195 unsigned int msg_tx_committed:1;
196 /* CPT # this message committed for sending */
197 unsigned int msg_tx_cpt:15;
198 /* commited for receiving */
199 unsigned int msg_rx_committed:1;
200 /* CPT # this message committed for receiving */
201 unsigned int msg_rx_cpt:15;
202 /* queued for tx credit */
203 unsigned int msg_tx_delayed:1;
204 /* queued for RX buffer */
205 unsigned int msg_rx_delayed:1;
206 /* ready for pending on RX delay list */
207 unsigned int msg_rx_ready_delay:1;
209 unsigned int msg_vmflush:1; /* VM trying to free memory */
210 unsigned int msg_target_is_router:1; /* sending to a router */
211 unsigned int msg_routing:1; /* being forwarded */
212 unsigned int msg_ack:1; /* ack on finalize (PUT) */
213 unsigned int msg_sending:1; /* outgoing message */
214 unsigned int msg_receiving:1; /* being received */
215 unsigned int msg_txcredit:1; /* taken an NI send credit */
216 unsigned int msg_peertxcredit:1; /* taken a peer send credit */
217 unsigned int msg_rtrcredit:1; /* taken a globel router credit */
218 unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
219 unsigned int msg_onactivelist:1; /* on the activelist */
221 struct lnet_peer *msg_txpeer; /* peer I'm sending to */
222 struct lnet_peer *msg_rxpeer; /* peer I received from */
225 struct lnet_libmd *msg_md;
227 unsigned int msg_len;
228 unsigned int msg_wanted;
229 unsigned int msg_offset;
230 unsigned int msg_niov;
231 struct iovec *msg_iov;
232 lnet_kiov_t *msg_kiov;
239 typedef struct lnet_libhandle {
240 struct list_head lh_hash_chain;
244 #define lh_entry(ptr, type, member) \
245 ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
247 typedef struct lnet_eq {
248 struct list_head eq_list;
249 lnet_libhandle_t eq_lh;
250 lnet_seq_t eq_enq_seq;
251 lnet_seq_t eq_deq_seq;
252 unsigned int eq_size;
253 lnet_eq_handler_t eq_callback;
254 lnet_event_t *eq_events;
255 int **eq_refs; /* percpt refcount for EQ */
258 typedef struct lnet_me {
259 struct list_head me_list;
260 lnet_libhandle_t me_lh;
261 lnet_process_id_t me_match_id;
262 unsigned int me_portal;
263 unsigned int me_pos; /* hash offset in mt_hash */
265 __u64 me_ignore_bits;
266 lnet_unlink_t me_unlink;
267 struct lnet_libmd *me_md;
270 typedef struct lnet_libmd {
271 struct list_head md_list;
272 lnet_libhandle_t md_lh;
275 unsigned int md_offset;
276 unsigned int md_length;
277 unsigned int md_max_size;
280 unsigned int md_options;
281 unsigned int md_flags;
284 unsigned int md_niov; /* # frags */
286 struct iovec iov[LNET_MAX_IOV];
287 lnet_kiov_t kiov[LNET_MAX_IOV];
291 #define LNET_MD_FLAG_ZOMBIE (1 << 0)
292 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
293 #define LNET_MD_FLAG_ABORTED (1 << 2)
295 #ifdef LNET_USE_LIB_FREELIST
298 /* single contiguous array of objects */
300 /* the number of them */
302 /* the size (including overhead) of each of them */
304 /* where they are enqueued */
305 struct list_head fl_list;
310 struct list_head fo_list; /* enqueue on fl_list */
311 void *fo_contents; /* aligned contents */
316 /* info about peers we are trying to fail */
317 struct list_head tp_list; /* ln_test_peers */
318 lnet_nid_t tp_nid; /* matching nid */
319 unsigned int tp_threshold; /* # failures to simulate */
322 #define LNET_COOKIE_TYPE_MD 1
323 #define LNET_COOKIE_TYPE_ME 2
324 #define LNET_COOKIE_TYPE_EQ 3
325 #define LNET_COOKIE_TYPE_BITS 2
326 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
328 struct lnet_ni; /* forward ref */
330 typedef struct lnet_lnd
332 /* fields managed by portals */
333 struct list_head lnd_list; /* stash in the LND table */
334 int lnd_refcount; /* # active instances */
336 /* fields initialised by the LND */
337 unsigned int lnd_type;
339 int (*lnd_startup) (struct lnet_ni *ni);
340 void (*lnd_shutdown) (struct lnet_ni *ni);
341 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
343 /* In data movement APIs below, payload buffers are described as a set
344 * of 'niov' fragments which are...
346 * in virtual memory (struct iovec *iov != NULL)
348 * in pages (kernel only: plt_kiov_t *kiov != NULL).
349 * The LND may NOT overwrite these fragment descriptors.
350 * An 'offset' and may specify a byte offset within the set of
351 * fragments to start from
354 /* Start sending a preformatted message. 'private' is NULL for PUT and
355 * GET messages; otherwise this is a response to an incoming message
356 * and 'private' is the 'private' passed to lnet_parse(). Return
357 * non-zero for immediate failure, otherwise complete later with
359 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
361 /* Start receiving 'mlen' bytes of payload data, skipping the following
362 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
363 * lnet_parse(). Return non-zero for immedaite failure, otherwise
364 * complete later with lnet_finalize(). This also gives back a receive
365 * credit if the LND does flow control. */
366 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
367 int delayed, unsigned int niov,
368 struct iovec *iov, lnet_kiov_t *kiov,
369 unsigned int offset, unsigned int mlen, unsigned int rlen);
371 /* lnet_parse() has had to delay processing of this message
372 * (e.g. waiting for a forwarding buffer or send credits). Give the
373 * LND a chance to free urgently needed resources. If called, return 0
374 * for success and do NOT give back a receive credit; that has to wait
375 * until lnd_recv() gets called. On failure return < 0 and
376 * release resources; lnd_recv() will not be called. */
377 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
378 void **new_privatep);
380 /* notification of peer health */
381 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
383 /* query of peer aliveness */
384 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
386 #if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
387 /* accept a new connection */
388 int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
392 /* wait for something to happen */
393 void (*lnd_wait)(struct lnet_ni *ni, int milliseconds);
395 /* ensure non-RDMA messages can be received outside liblustre */
396 int (*lnd_setasync)(struct lnet_ni *ni, lnet_process_id_t id, int nasync);
400 #define LNET_NI_STATUS_UP 0x15aac0de
401 #define LNET_NI_STATUS_DOWN 0xdeadface
402 #define LNET_NI_STATUS_INVALID 0x00000000
407 } WIRE_ATTR lnet_ni_status_t;
409 struct lnet_tx_queue {
410 int tq_credits; /* # tx credits free */
411 int tq_credits_min; /* lowest it's been */
412 int tq_credits_max; /* total # tx credits */
413 struct list_head tq_delayed; /* delayed TXs */
416 #define LNET_MAX_INTERFACES 16
418 typedef struct lnet_ni {
422 # ifndef HAVE_LIBPTHREAD
425 pthread_mutex_t ni_lock;
428 struct list_head ni_list; /* chain on ln_nis */
429 struct list_head ni_cptlist; /* chain on ln_nis_cpt */
430 int ni_maxtxcredits; /* # tx credits */
431 /* # per-peer send credits */
432 int ni_peertxcredits;
433 /* # per-peer router buffer credits */
434 int ni_peerrtrcredits;
435 /* seconds to consider peer dead */
437 int ni_ncpts; /* number of CPTs */
438 __u32 *ni_cpts; /* bond NI on some CPTs */
439 lnet_nid_t ni_nid; /* interface's NID */
440 void *ni_data; /* instance-specific data */
441 lnd_t *ni_lnd; /* procedural interface */
442 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
443 int **ni_refs; /* percpt reference count */
444 long ni_last_alive; /* when I was last alive */
445 lnet_ni_status_t *ni_status; /* my health status */
446 /* equivalent interfaces to use */
447 char *ni_interfaces[LNET_MAX_INTERFACES];
450 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
452 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
453 * of old LNet, so there shouldn't be any compatibility issue */
454 #define LNET_PING_FEAT_INVAL (0) /* no feature */
455 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
456 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
458 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
459 LNET_PING_FEAT_NI_STATUS)
466 lnet_ni_status_t pi_ni[0];
467 } WIRE_ATTR lnet_ping_info_t;
469 /* router checker data, per router */
470 #define LNET_MAX_RTR_NIS 16
471 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
473 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
474 struct list_head rcd_list;
475 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
476 struct lnet_peer *rcd_gateway; /* reference to gateway */
477 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
480 typedef struct lnet_peer {
481 /* chain on peer hash */
482 struct list_head lp_hashlist;
483 /* messages blocking for tx credits */
484 struct list_head lp_txq;
485 /* messages blocking for router credits */
486 struct list_head lp_rtrq;
487 /* chain on router list */
488 struct list_head lp_rtr_list;
489 /* # tx credits available */
493 /* # router credits */
496 int lp_minrtrcredits;
498 unsigned int lp_alive:1;
499 /* notification outstanding? */
500 unsigned int lp_notify:1;
501 /* outstanding notification for LND? */
502 unsigned int lp_notifylnd:1;
503 /* some thread is handling notification */
504 unsigned int lp_notifying:1;
505 /* SEND event outstanding from ping */
506 unsigned int lp_ping_notsent;
507 /* # times router went dead<->alive */
509 /* bytes queued for sending */
511 /* time of last aliveness news */
512 cfs_time_t lp_timestamp;
513 /* time of last ping attempt */
514 cfs_time_t lp_ping_timestamp;
515 /* != 0 if ping reply expected */
516 cfs_time_t lp_ping_deadline;
517 /* when I was last alive */
518 cfs_time_t lp_last_alive;
519 /* when lp_ni was queried last time */
520 cfs_time_t lp_last_query;
521 /* interface peer is on */
523 lnet_nid_t lp_nid; /* peer's NID */
524 int lp_refcount; /* # refs */
525 int lp_cpt; /* CPT this peer attached on */
526 /* # refs from lnet_route_t::lr_gateway */
528 /* returned RC ping features */
529 unsigned int lp_ping_feats;
530 struct list_head lp_routes; /* routers on this peer */
531 lnet_rc_data_t *lp_rcd; /* router checker state */
535 #define LNET_PEER_HASH_BITS 9
536 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
538 /* peer hash table */
539 struct lnet_peer_table {
540 int pt_version; /* /proc validity stamp */
541 int pt_number; /* # peers extant */
542 struct list_head pt_deathrow; /* zombie peers */
543 struct list_head *pt_hash; /* NID->peer hash */
546 /* peer aliveness is enabled only on routers for peers in a network where the
547 * lnet_ni_t::ni_peertimeout has been set to a positive value */
548 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
549 (lp)->lp_ni->ni_peertimeout > 0)
552 struct list_head lr_list; /* chain on net */
553 struct list_head lr_gwlist; /* chain on gateway */
554 lnet_peer_t *lr_gateway; /* router node */
555 __u32 lr_net; /* remote network number */
556 int lr_seq; /* sequence for round-robin */
557 unsigned int lr_downis; /* number of down NIs */
558 unsigned int lr_hops; /* how far I am */
559 unsigned int lr_priority; /* route priority */
562 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
563 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
564 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
567 /* chain on ln_remote_nets_hash */
568 struct list_head lrn_list;
570 struct list_head lrn_routes;
576 /* my free buffer pool */
577 struct list_head rbp_bufs;
578 /* messages blocking for a buffer */
579 struct list_head rbp_msgs;
580 /* # pages in each buffer */
584 /* # free buffers / blocked messages */
591 struct list_head rb_list; /* chain on rbp_bufs */
592 lnet_rtrbufpool_t *rb_pool; /* owning pool */
593 lnet_kiov_t rb_kiov[0]; /* the buffer space */
608 } WIRE_ATTR lnet_counters_t;
610 #define LNET_PEER_HASHSIZE 503 /* prime! */
612 #define LNET_NRBPOOLS 3 /* # different router buffer pools */
615 /* Didn't match anything */
616 LNET_MATCHMD_NONE = (1 << 0),
618 LNET_MATCHMD_OK = (1 << 1),
619 /* Must be discarded */
620 LNET_MATCHMD_DROP = (1 << 2),
621 /* match and buffer is exhausted */
622 LNET_MATCHMD_EXHAUSTED = (1 << 3),
624 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
627 /* Options for lnet_portal_t::ptl_options */
628 #define LNET_PTL_LAZY (1 << 0)
629 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
630 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
632 /* parameter for matching operations (GET, PUT) */
633 struct lnet_match_info {
635 lnet_process_id_t mi_id;
637 unsigned int mi_portal;
638 unsigned int mi_rlength;
639 unsigned int mi_roffset;
642 /* ME hash of RDMA portal */
643 #define LNET_MT_HASH_BITS 8
644 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
645 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
646 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
647 * the last entry is reserved for MEs with ignore-bits */
648 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
649 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
650 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
651 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
652 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
653 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
654 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
656 /* portal match table */
657 struct lnet_match_table {
658 /* reserved for upcoming patches, CPU partition ID */
660 unsigned int mt_portal; /* portal index */
661 /* match table is set as "enabled" if there's non-exhausted MD
662 * attached on mt_mhash, it's only valide for wildcard portal */
663 unsigned int mt_enabled;
664 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
665 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
666 struct list_head *mt_mhash; /* matching hash */
669 /* these are only useful for wildcard portal */
670 /* Turn off message rotor for wildcard portals */
671 #define LNET_PTL_ROTOR_OFF 0
672 /* round-robin dispatch all PUT messages for wildcard portals */
673 #define LNET_PTL_ROTOR_ON 1
674 /* round-robin dispatch routed PUT message for wildcard portals */
675 #define LNET_PTL_ROTOR_RR_RT 2
676 /* dispatch routed PUT message by hashing source NID for wildcard portals */
677 #define LNET_PTL_ROTOR_HASH_RT 3
679 typedef struct lnet_portal {
683 # ifndef HAVE_LIBPTHREAD
686 pthread_mutex_t ptl_lock;
689 unsigned int ptl_index; /* portal ID, reserved */
690 /* flags on this portal: lazy, unique... */
691 unsigned int ptl_options;
692 /* list of messags which are stealing buffer */
693 struct list_head ptl_msg_stealing;
694 /* messages blocking for MD */
695 struct list_head ptl_msg_delayed;
696 /* Match table for each CPT */
697 struct lnet_match_table **ptl_mtables;
698 /* spread rotor of incoming "PUT" */
700 /* # active entries for this portal */
702 /* array of active entries' cpu-partition-id */
706 #define LNET_LH_HASH_BITS 12
707 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
708 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
710 /* resource container (ME, MD, EQ) */
711 struct lnet_res_container {
712 unsigned int rec_type; /* container type */
713 __u64 rec_lh_cookie; /* cookie generator */
714 struct list_head rec_active; /* active resource list */
715 struct list_head *rec_lh_hash; /* handle hash */
716 #ifdef LNET_USE_LIB_FREELIST
717 lnet_freelist_t rec_freelist; /* freelist for resources */
721 /* message container */
722 struct lnet_msg_container {
723 int msc_init; /* initialized or not */
724 /* max # threads finalizing */
726 /* msgs waiting to complete finalizing */
727 struct list_head msc_finalizing;
728 struct list_head msc_active; /* active message list */
729 /* threads doing finalization */
730 void **msc_finalizers;
731 #ifdef LNET_USE_LIB_FREELIST
732 lnet_freelist_t msc_freelist; /* freelist for messages */
736 /* Router Checker states */
737 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
738 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
739 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
743 /* CPU partition table of LNet */
744 struct cfs_cpt_table *ln_cpt_table;
745 /* number of CPTs in ln_cpt_table */
746 unsigned int ln_cpt_number;
747 unsigned int ln_cpt_bits;
749 /* protect LNet resources (ME/MD/EQ) */
750 struct cfs_percpt_lock *ln_res_lock;
753 /* the vector of portals */
754 lnet_portal_t **ln_portals;
755 /* percpt ME containers */
756 struct lnet_res_container **ln_me_containers;
757 /* percpt MD container */
758 struct lnet_res_container **ln_md_containers;
760 /* Event Queue container */
761 struct lnet_res_container ln_eq_container;
763 wait_queue_head_t ln_eq_waitq;
764 spinlock_t ln_eq_wait_lock;
766 # ifndef HAVE_LIBPTHREAD
769 pthread_cond_t ln_eq_cond;
770 pthread_mutex_t ln_eq_wait_lock;
773 unsigned int ln_remote_nets_hbits;
775 /* protect NI, peer table, credits, routers, rtrbuf... */
776 struct cfs_percpt_lock *ln_net_lock;
777 /* percpt message containers for active/finalizing/freed message */
778 struct lnet_msg_container **ln_msg_containers;
779 lnet_counters_t **ln_counters;
780 struct lnet_peer_table **ln_peer_tables;
781 /* failure simulation */
782 struct list_head ln_test_peers;
784 struct list_head ln_nis; /* LND instances */
785 /* NIs bond on specific CPT(s) */
786 struct list_head ln_nis_cpt;
787 /* dying LND instances */
788 struct list_head ln_nis_zombie;
789 lnet_ni_t *ln_loni; /* the loopback NI */
790 /* NI to wait for events in */
791 lnet_ni_t *ln_eq_waitni;
793 /* remote networks with routes to them */
794 struct list_head *ln_remote_nets_hash;
796 __u64 ln_remote_nets_version;
797 /* list of all known routers */
798 struct list_head ln_routers;
800 __u64 ln_routers_version;
801 /* percpt router buffer pools */
802 lnet_rtrbufpool_t **ln_rtrpools;
804 lnet_handle_md_t ln_ping_target_md;
805 lnet_handle_eq_t ln_ping_target_eq;
806 lnet_ping_info_t *ln_ping_info;
808 /* router checker startup/shutdown state */
810 /* router checker's event queue */
811 lnet_handle_eq_t ln_rc_eqh;
812 /* rcd still pending on net */
813 struct list_head ln_rcd_deathrow;
814 /* rcd ready for free */
815 struct list_head ln_rcd_zombie;
817 /* serialise startup/shutdown */
818 struct semaphore ln_rc_signal;
820 struct mutex ln_api_mutex;
821 struct mutex ln_lnd_mutex;
823 # ifndef HAVE_LIBPTHREAD
827 pthread_mutex_t ln_api_mutex;
828 pthread_mutex_t ln_lnd_mutex;
831 int ln_init; /* LNetInit() called? */
832 /* Have I called LNetNIInit myself? */
834 /* LNetNIInit/LNetNIFini counter */
836 /* shutdown in progress */
839 int ln_routing; /* am I a router? */
840 lnet_pid_t ln_pid; /* requested pid */
841 /* uniquely identifies this ni in this epoch */
842 __u64 ln_interface_cookie;
843 /* registered LNDs */
844 struct list_head ln_lnds;
846 /* space for network names */
847 char *ln_network_tokens;
848 int ln_network_tokens_nob;
849 /* test protocol compatibility flags */
850 int ln_testprotocompat;
853 /* Temporary workaround to allow uOSS and test programs force
854 * server mode in userspace. The only place where we use it is
855 * lnet_prepare(). The only way to turn this flag on is to
856 * call lnet_server_mode() */
857 int ln_server_mode_flag;