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>
48 #error Unsupported Operating System
51 #include <libcfs/libcfs.h>
52 #include <libcfs/list.h>
53 #include <lnet/types.h>
55 #define WIRE_ATTR __attribute__((packed))
57 /* Packed version of lnet_process_id_t to transfer via network */
60 lnet_pid_t pid; /* node id / process id */
61 } WIRE_ATTR lnet_process_id_packed_t;
63 /* The wire handle's interface cookie only matches one network interface in
64 * one epoch (i.e. new cookie when the interface restarts or the node
65 * reboots). The object cookie only matches one object on that interface
66 * during that object's lifetime (i.e. no cookie re-use). */
68 __u64 wh_interface_cookie;
69 __u64 wh_object_cookie;
70 } WIRE_ATTR lnet_handle_wire_t;
80 /* The variant fields of the portals message header are aligned on an 8
81 * byte boundary in the message header. Note that all types used in these
82 * wire structs MUST be fixed size and the smaller types are placed at the
84 typedef struct lnet_ack {
85 lnet_handle_wire_t dst_wmd;
88 } WIRE_ATTR lnet_ack_t;
90 typedef struct lnet_put {
91 lnet_handle_wire_t ack_wmd;
96 } WIRE_ATTR lnet_put_t;
98 typedef struct lnet_get {
99 lnet_handle_wire_t return_wmd;
104 } WIRE_ATTR lnet_get_t;
106 typedef struct lnet_reply {
107 lnet_handle_wire_t dst_wmd;
108 } WIRE_ATTR lnet_reply_t;
110 typedef struct lnet_hello {
113 } WIRE_ATTR lnet_hello_t;
120 __u32 type; /* lnet_msg_type_t */
121 __u32 payload_length; /* payload data to follow */
122 /*<------__u64 aligned------->*/
130 } WIRE_ATTR lnet_hdr_t;
132 /* A HELLO message contains a magic number and protocol version
133 * code in the header's dest_nid, the peer's NID in the src_nid, and
134 * LNET_MSG_HELLO in the type field. All other common fields are zero
135 * (including payload_size; i.e. no payload).
136 * This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is
137 * running the same protocol and to find out its NID. These LNDs should
138 * exchange HELLO messages when a connection is first established. Individual
139 * LNDs can put whatever else they fancy in lnet_hdr_t::msg.
142 __u32 magic; /* LNET_PROTO_TCP_MAGIC */
143 __u16 version_major; /* increment on incompatible change */
144 __u16 version_minor; /* increment on compatible change */
145 } WIRE_ATTR lnet_magicversion_t;
147 /* PROTO MAGIC for LNDs */
148 #define LNET_PROTO_IB_MAGIC 0x0be91b91
149 #define LNET_PROTO_RA_MAGIC 0x0be91b92
150 #define LNET_PROTO_QSW_MAGIC 0x0be91b93
151 #define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */
152 #define LNET_PROTO_TCP_MAGIC 0xeebc0ded
153 #define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
154 #define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
155 #define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
156 #define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
158 /* Placeholder for a future "unified" protocol across all LNDs */
159 /* Current LNDs that receive a request with this magic will respond with a
160 * "stub" reply using their current protocol */
161 #define LNET_PROTO_MAGIC 0x45726963 /* ! */
164 #define LNET_PROTO_TCP_VERSION_MAJOR 1
165 #define LNET_PROTO_TCP_VERSION_MINOR 0
167 /* Acceptor connection request */
169 __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
170 __u32 acr_version; /* protocol version */
171 __u64 acr_nid; /* target NID */
172 } WIRE_ATTR lnet_acceptor_connreq_t;
174 #define LNET_PROTO_ACCEPTOR_VERSION 1
179 typedef struct lnet_msg {
180 struct list_head msg_activelist;
181 struct list_head msg_list; /* Q for credits/MD */
183 lnet_process_id_t msg_target;
184 /* where is it from, it's only for building event */
188 /* commited for sending */
189 unsigned int msg_tx_committed:1;
190 /* CPT # this message committed for sending */
191 unsigned int msg_tx_cpt:15;
192 /* commited for receiving */
193 unsigned int msg_rx_committed:1;
194 /* CPT # this message committed for receiving */
195 unsigned int msg_rx_cpt:15;
196 /* queued for tx credit */
197 unsigned int msg_tx_delayed:1;
198 /* queued for RX buffer */
199 unsigned int msg_rx_delayed:1;
200 /* ready for pending on RX delay list */
201 unsigned int msg_rx_ready_delay:1;
203 unsigned int msg_vmflush:1; /* VM trying to free memory */
204 unsigned int msg_target_is_router:1; /* sending to a router */
205 unsigned int msg_routing:1; /* being forwarded */
206 unsigned int msg_ack:1; /* ack on finalize (PUT) */
207 unsigned int msg_sending:1; /* outgoing message */
208 unsigned int msg_receiving:1; /* being received */
209 unsigned int msg_txcredit:1; /* taken an NI send credit */
210 unsigned int msg_peertxcredit:1; /* taken a peer send credit */
211 unsigned int msg_rtrcredit:1; /* taken a globel router credit */
212 unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
213 unsigned int msg_onactivelist:1; /* on the activelist */
215 struct lnet_peer *msg_txpeer; /* peer I'm sending to */
216 struct lnet_peer *msg_rxpeer; /* peer I received from */
219 struct lnet_libmd *msg_md;
221 unsigned int msg_len;
222 unsigned int msg_wanted;
223 unsigned int msg_offset;
224 unsigned int msg_niov;
225 struct iovec *msg_iov;
226 lnet_kiov_t *msg_kiov;
233 typedef struct lnet_libhandle {
234 struct list_head lh_hash_chain;
238 #define lh_entry(ptr, type, member) \
239 ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
241 typedef struct lnet_eq {
242 struct list_head eq_list;
243 lnet_libhandle_t eq_lh;
244 lnet_seq_t eq_enq_seq;
245 lnet_seq_t eq_deq_seq;
246 unsigned int eq_size;
247 lnet_eq_handler_t eq_callback;
248 lnet_event_t *eq_events;
249 int **eq_refs; /* percpt refcount for EQ */
252 typedef struct lnet_me {
253 struct list_head me_list;
254 lnet_libhandle_t me_lh;
255 lnet_process_id_t me_match_id;
256 unsigned int me_portal;
257 unsigned int me_pos; /* hash offset in mt_hash */
259 __u64 me_ignore_bits;
260 lnet_unlink_t me_unlink;
261 struct lnet_libmd *me_md;
264 typedef struct lnet_libmd {
265 struct list_head md_list;
266 lnet_libhandle_t md_lh;
269 unsigned int md_offset;
270 unsigned int md_length;
271 unsigned int md_max_size;
274 unsigned int md_options;
275 unsigned int md_flags;
278 unsigned int md_niov; /* # frags */
280 struct iovec iov[LNET_MAX_IOV];
281 lnet_kiov_t kiov[LNET_MAX_IOV];
285 #define LNET_MD_FLAG_ZOMBIE (1 << 0)
286 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
287 #define LNET_MD_FLAG_ABORTED (1 << 2)
289 #ifdef LNET_USE_LIB_FREELIST
292 /* single contiguous array of objects */
294 /* the number of them */
296 /* the size (including overhead) of each of them */
298 /* where they are enqueued */
299 struct list_head fl_list;
304 struct list_head fo_list; /* enqueue on fl_list */
305 void *fo_contents; /* aligned contents */
310 /* info about peers we are trying to fail */
311 struct list_head tp_list; /* ln_test_peers */
312 lnet_nid_t tp_nid; /* matching nid */
313 unsigned int tp_threshold; /* # failures to simulate */
316 #define LNET_COOKIE_TYPE_MD 1
317 #define LNET_COOKIE_TYPE_ME 2
318 #define LNET_COOKIE_TYPE_EQ 3
319 #define LNET_COOKIE_TYPE_BITS 2
320 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
322 struct lnet_ni; /* forward ref */
324 typedef struct lnet_lnd
326 /* fields managed by portals */
327 struct list_head lnd_list; /* stash in the LND table */
328 int lnd_refcount; /* # active instances */
330 /* fields initialised by the LND */
331 unsigned int lnd_type;
333 int (*lnd_startup) (struct lnet_ni *ni);
334 void (*lnd_shutdown) (struct lnet_ni *ni);
335 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
337 /* In data movement APIs below, payload buffers are described as a set
338 * of 'niov' fragments which are...
340 * in virtual memory (struct iovec *iov != NULL)
342 * in pages (kernel only: plt_kiov_t *kiov != NULL).
343 * The LND may NOT overwrite these fragment descriptors.
344 * An 'offset' and may specify a byte offset within the set of
345 * fragments to start from
348 /* Start sending a preformatted message. 'private' is NULL for PUT and
349 * GET messages; otherwise this is a response to an incoming message
350 * and 'private' is the 'private' passed to lnet_parse(). Return
351 * non-zero for immediate failure, otherwise complete later with
353 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
355 /* Start receiving 'mlen' bytes of payload data, skipping the following
356 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
357 * lnet_parse(). Return non-zero for immedaite failure, otherwise
358 * complete later with lnet_finalize(). This also gives back a receive
359 * credit if the LND does flow control. */
360 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
361 int delayed, unsigned int niov,
362 struct iovec *iov, lnet_kiov_t *kiov,
363 unsigned int offset, unsigned int mlen, unsigned int rlen);
365 /* lnet_parse() has had to delay processing of this message
366 * (e.g. waiting for a forwarding buffer or send credits). Give the
367 * LND a chance to free urgently needed resources. If called, return 0
368 * for success and do NOT give back a receive credit; that has to wait
369 * until lnd_recv() gets called. On failure return < 0 and
370 * release resources; lnd_recv() will not be called. */
371 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
372 void **new_privatep);
374 /* notification of peer health */
375 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
377 /* query of peer aliveness */
378 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
380 #if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
381 /* accept a new connection */
382 int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
386 /* wait for something to happen */
387 void (*lnd_wait)(struct lnet_ni *ni, int milliseconds);
389 /* ensure non-RDMA messages can be received outside liblustre */
390 int (*lnd_setasync)(struct lnet_ni *ni, lnet_process_id_t id, int nasync);
394 #define LNET_NI_STATUS_UP 0x15aac0de
395 #define LNET_NI_STATUS_DOWN 0xdeadface
396 #define LNET_NI_STATUS_INVALID 0x00000000
401 } WIRE_ATTR lnet_ni_status_t;
403 struct lnet_tx_queue {
404 int tq_credits; /* # tx credits free */
405 int tq_credits_min; /* lowest it's been */
406 int tq_credits_max; /* total # tx credits */
407 struct list_head tq_delayed; /* delayed TXs */
410 #define LNET_MAX_INTERFACES 16
412 typedef struct lnet_ni {
416 # ifndef HAVE_LIBPTHREAD
419 pthread_mutex_t ni_lock;
422 struct list_head ni_list; /* chain on ln_nis */
423 struct list_head ni_cptlist; /* chain on ln_nis_cpt */
424 int ni_maxtxcredits; /* # tx credits */
425 /* # per-peer send credits */
426 int ni_peertxcredits;
427 /* # per-peer router buffer credits */
428 int ni_peerrtrcredits;
429 /* seconds to consider peer dead */
431 int ni_ncpts; /* number of CPTs */
432 __u32 *ni_cpts; /* bond NI on some CPTs */
433 lnet_nid_t ni_nid; /* interface's NID */
434 void *ni_data; /* instance-specific data */
435 lnd_t *ni_lnd; /* procedural interface */
436 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
437 int **ni_refs; /* percpt reference count */
438 long ni_last_alive; /* when I was last alive */
439 lnet_ni_status_t *ni_status; /* my health status */
440 /* equivalent interfaces to use */
441 char *ni_interfaces[LNET_MAX_INTERFACES];
444 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
446 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
447 * of old LNet, so there shouldn't be any compatibility issue */
448 #define LNET_PING_FEAT_INVAL (0) /* no feature */
449 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
450 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
451 #define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */
453 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
454 LNET_PING_FEAT_NI_STATUS)
461 lnet_ni_status_t pi_ni[0];
462 } WIRE_ATTR lnet_ping_info_t;
464 /* router checker data, per router */
465 #define LNET_MAX_RTR_NIS 16
466 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
468 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
469 struct list_head rcd_list;
470 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
471 struct lnet_peer *rcd_gateway; /* reference to gateway */
472 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
475 typedef struct lnet_peer {
476 /* chain on peer hash */
477 struct list_head lp_hashlist;
478 /* messages blocking for tx credits */
479 struct list_head lp_txq;
480 /* messages blocking for router credits */
481 struct list_head lp_rtrq;
482 /* chain on router list */
483 struct list_head lp_rtr_list;
484 /* # tx credits available */
488 /* # router credits */
491 int lp_minrtrcredits;
493 unsigned int lp_alive:1;
494 /* notification outstanding? */
495 unsigned int lp_notify:1;
496 /* outstanding notification for LND? */
497 unsigned int lp_notifylnd:1;
498 /* some thread is handling notification */
499 unsigned int lp_notifying:1;
500 /* SEND event outstanding from ping */
501 unsigned int lp_ping_notsent;
502 /* # times router went dead<->alive */
504 /* bytes queued for sending */
506 /* time of last aliveness news */
507 cfs_time_t lp_timestamp;
508 /* time of last ping attempt */
509 cfs_time_t lp_ping_timestamp;
510 /* != 0 if ping reply expected */
511 cfs_time_t lp_ping_deadline;
512 /* when I was last alive */
513 cfs_time_t lp_last_alive;
514 /* when lp_ni was queried last time */
515 cfs_time_t lp_last_query;
516 /* interface peer is on */
518 lnet_nid_t lp_nid; /* peer's NID */
519 int lp_refcount; /* # refs */
520 int lp_cpt; /* CPT this peer attached on */
521 /* # refs from lnet_route_t::lr_gateway */
523 /* returned RC ping features */
524 unsigned int lp_ping_feats;
525 struct list_head lp_routes; /* routers on this peer */
526 lnet_rc_data_t *lp_rcd; /* router checker state */
530 #define LNET_PEER_HASH_BITS 9
531 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
533 /* peer hash table */
534 struct lnet_peer_table {
535 int pt_version; /* /proc validity stamp */
536 int pt_number; /* # peers extant */
537 int pt_zombies; /* # zombies to go to deathrow
538 * (and not there yet) */
539 struct list_head pt_deathrow; /* zombie peers */
540 struct list_head *pt_hash; /* NID->peer hash */
543 /* peer aliveness is enabled only on routers for peers in a network where the
544 * lnet_ni_t::ni_peertimeout has been set to a positive value */
545 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
546 (lp)->lp_ni->ni_peertimeout > 0)
549 struct list_head lr_list; /* chain on net */
550 struct list_head lr_gwlist; /* chain on gateway */
551 lnet_peer_t *lr_gateway; /* router node */
552 __u32 lr_net; /* remote network number */
553 int lr_seq; /* sequence for round-robin */
554 unsigned int lr_downis; /* number of down NIs */
555 unsigned int lr_hops; /* how far I am */
556 unsigned int lr_priority; /* route priority */
559 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
560 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
561 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
564 /* chain on ln_remote_nets_hash */
565 struct list_head lrn_list;
567 struct list_head lrn_routes;
573 /* my free buffer pool */
574 struct list_head rbp_bufs;
575 /* messages blocking for a buffer */
576 struct list_head rbp_msgs;
577 /* # pages in each buffer */
581 /* # free buffers / blocked messages */
588 struct list_head rb_list; /* chain on rbp_bufs */
589 lnet_rtrbufpool_t *rb_pool; /* owning pool */
590 lnet_kiov_t rb_kiov[0]; /* the buffer space */
605 } WIRE_ATTR lnet_counters_t;
607 #define LNET_PEER_HASHSIZE 503 /* prime! */
609 #define LNET_TINY_BUF_IDX 0
610 #define LNET_SMALL_BUF_IDX 1
611 #define LNET_LARGE_BUF_IDX 2
613 /* # different router buffer pools */
614 #define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1)
617 /* Didn't match anything */
618 LNET_MATCHMD_NONE = (1 << 0),
620 LNET_MATCHMD_OK = (1 << 1),
621 /* Must be discarded */
622 LNET_MATCHMD_DROP = (1 << 2),
623 /* match and buffer is exhausted */
624 LNET_MATCHMD_EXHAUSTED = (1 << 3),
626 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
629 /* Options for lnet_portal_t::ptl_options */
630 #define LNET_PTL_LAZY (1 << 0)
631 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
632 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
634 /* parameter for matching operations (GET, PUT) */
635 struct lnet_match_info {
637 lnet_process_id_t mi_id;
639 unsigned int mi_portal;
640 unsigned int mi_rlength;
641 unsigned int mi_roffset;
644 /* ME hash of RDMA portal */
645 #define LNET_MT_HASH_BITS 8
646 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
647 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
648 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
649 * the last entry is reserved for MEs with ignore-bits */
650 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
651 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
652 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
653 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
654 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
655 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
656 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
658 /* portal match table */
659 struct lnet_match_table {
660 /* reserved for upcoming patches, CPU partition ID */
662 unsigned int mt_portal; /* portal index */
663 /* match table is set as "enabled" if there's non-exhausted MD
664 * attached on mt_mhash, it's only valide for wildcard portal */
665 unsigned int mt_enabled;
666 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
667 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
668 struct list_head *mt_mhash; /* matching hash */
671 /* these are only useful for wildcard portal */
672 /* Turn off message rotor for wildcard portals */
673 #define LNET_PTL_ROTOR_OFF 0
674 /* round-robin dispatch all PUT messages for wildcard portals */
675 #define LNET_PTL_ROTOR_ON 1
676 /* round-robin dispatch routed PUT message for wildcard portals */
677 #define LNET_PTL_ROTOR_RR_RT 2
678 /* dispatch routed PUT message by hashing source NID for wildcard portals */
679 #define LNET_PTL_ROTOR_HASH_RT 3
681 typedef struct lnet_portal {
685 # ifndef HAVE_LIBPTHREAD
688 pthread_mutex_t ptl_lock;
691 unsigned int ptl_index; /* portal ID, reserved */
692 /* flags on this portal: lazy, unique... */
693 unsigned int ptl_options;
694 /* list of messags which are stealing buffer */
695 struct list_head ptl_msg_stealing;
696 /* messages blocking for MD */
697 struct list_head ptl_msg_delayed;
698 /* Match table for each CPT */
699 struct lnet_match_table **ptl_mtables;
700 /* spread rotor of incoming "PUT" */
702 /* # active entries for this portal */
704 /* array of active entries' cpu-partition-id */
708 #define LNET_LH_HASH_BITS 12
709 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
710 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
712 /* resource container (ME, MD, EQ) */
713 struct lnet_res_container {
714 unsigned int rec_type; /* container type */
715 __u64 rec_lh_cookie; /* cookie generator */
716 struct list_head rec_active; /* active resource list */
717 struct list_head *rec_lh_hash; /* handle hash */
718 #ifdef LNET_USE_LIB_FREELIST
719 lnet_freelist_t rec_freelist; /* freelist for resources */
723 /* message container */
724 struct lnet_msg_container {
725 int msc_init; /* initialized or not */
726 /* max # threads finalizing */
728 /* msgs waiting to complete finalizing */
729 struct list_head msc_finalizing;
730 struct list_head msc_active; /* active message list */
731 /* threads doing finalization */
732 void **msc_finalizers;
733 #ifdef LNET_USE_LIB_FREELIST
734 lnet_freelist_t msc_freelist; /* freelist for messages */
738 /* Router Checker states */
739 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
740 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
741 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
745 /* CPU partition table of LNet */
746 struct cfs_cpt_table *ln_cpt_table;
747 /* number of CPTs in ln_cpt_table */
748 unsigned int ln_cpt_number;
749 unsigned int ln_cpt_bits;
751 /* protect LNet resources (ME/MD/EQ) */
752 struct cfs_percpt_lock *ln_res_lock;
755 /* the vector of portals */
756 lnet_portal_t **ln_portals;
757 /* percpt ME containers */
758 struct lnet_res_container **ln_me_containers;
759 /* percpt MD container */
760 struct lnet_res_container **ln_md_containers;
762 /* Event Queue container */
763 struct lnet_res_container ln_eq_container;
765 wait_queue_head_t ln_eq_waitq;
766 spinlock_t ln_eq_wait_lock;
768 # ifndef HAVE_LIBPTHREAD
771 pthread_cond_t ln_eq_cond;
772 pthread_mutex_t ln_eq_wait_lock;
775 unsigned int ln_remote_nets_hbits;
777 /* protect NI, peer table, credits, routers, rtrbuf... */
778 struct cfs_percpt_lock *ln_net_lock;
779 /* percpt message containers for active/finalizing/freed message */
780 struct lnet_msg_container **ln_msg_containers;
781 lnet_counters_t **ln_counters;
782 struct lnet_peer_table **ln_peer_tables;
783 /* failure simulation */
784 struct list_head ln_test_peers;
786 struct list_head ln_nis; /* LND instances */
787 /* NIs bond on specific CPT(s) */
788 struct list_head ln_nis_cpt;
789 /* dying LND instances */
790 struct list_head ln_nis_zombie;
791 lnet_ni_t *ln_loni; /* the loopback NI */
792 /* NI to wait for events in */
793 lnet_ni_t *ln_eq_waitni;
795 /* remote networks with routes to them */
796 struct list_head *ln_remote_nets_hash;
798 __u64 ln_remote_nets_version;
799 /* list of all known routers */
800 struct list_head ln_routers;
802 __u64 ln_routers_version;
803 /* percpt router buffer pools */
804 lnet_rtrbufpool_t **ln_rtrpools;
806 lnet_handle_md_t ln_ping_target_md;
807 lnet_handle_eq_t ln_ping_target_eq;
808 lnet_ping_info_t *ln_ping_info;
810 /* router checker startup/shutdown state */
812 /* router checker's event queue */
813 lnet_handle_eq_t ln_rc_eqh;
814 /* rcd still pending on net */
815 struct list_head ln_rcd_deathrow;
816 /* rcd ready for free */
817 struct list_head ln_rcd_zombie;
819 /* serialise startup/shutdown */
820 struct semaphore ln_rc_signal;
822 struct mutex ln_api_mutex;
823 struct mutex ln_lnd_mutex;
825 # ifndef HAVE_LIBPTHREAD
829 pthread_mutex_t ln_api_mutex;
830 pthread_mutex_t ln_lnd_mutex;
833 int ln_init; /* LNetInit() called? */
834 /* Have I called LNetNIInit myself? */
836 /* LNetNIInit/LNetNIFini counter */
838 /* shutdown in progress */
841 int ln_routing; /* am I a router? */
842 lnet_pid_t ln_pid; /* requested pid */
843 /* uniquely identifies this ni in this epoch */
844 __u64 ln_interface_cookie;
845 /* registered LNDs */
846 struct list_head ln_lnds;
848 /* test protocol compatibility flags */
849 int ln_testprotocompat;
852 /* Temporary workaround to allow uOSS and test programs force
853 * server mode in userspace. The only place where we use it is
854 * lnet_prepare(). The only way to turn this flag on is to
855 * call lnet_server_mode() */
856 int ln_server_mode_flag;