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>
50 #error Unsupported Operating System
53 #include <libcfs/libcfs.h>
54 #include <libcfs/list.h>
55 #include <lnet/types.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 */
217 struct lnet_peer *msg_txpeer; /* peer I'm sending to */
218 struct lnet_peer *msg_rxpeer; /* peer I received from */
221 struct lnet_libmd *msg_md;
223 unsigned int msg_len;
224 unsigned int msg_wanted;
225 unsigned int msg_offset;
226 unsigned int msg_niov;
227 struct iovec *msg_iov;
228 lnet_kiov_t *msg_kiov;
235 typedef struct lnet_libhandle {
236 struct list_head lh_hash_chain;
240 #define lh_entry(ptr, type, member) \
241 ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
243 typedef struct lnet_eq {
244 struct list_head eq_list;
245 lnet_libhandle_t eq_lh;
246 lnet_seq_t eq_enq_seq;
247 lnet_seq_t eq_deq_seq;
248 unsigned int eq_size;
249 lnet_eq_handler_t eq_callback;
250 lnet_event_t *eq_events;
251 int **eq_refs; /* percpt refcount for EQ */
254 typedef struct lnet_me {
255 struct list_head me_list;
256 lnet_libhandle_t me_lh;
257 lnet_process_id_t me_match_id;
258 unsigned int me_portal;
259 unsigned int me_pos; /* hash offset in mt_hash */
261 __u64 me_ignore_bits;
262 lnet_unlink_t me_unlink;
263 struct lnet_libmd *me_md;
266 typedef struct lnet_libmd {
267 struct list_head md_list;
268 lnet_libhandle_t md_lh;
271 unsigned int md_offset;
272 unsigned int md_length;
273 unsigned int md_max_size;
276 unsigned int md_options;
277 unsigned int md_flags;
280 unsigned int md_niov; /* # frags */
282 struct iovec iov[LNET_MAX_IOV];
283 lnet_kiov_t kiov[LNET_MAX_IOV];
287 #define LNET_MD_FLAG_ZOMBIE (1 << 0)
288 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
289 #define LNET_MD_FLAG_ABORTED (1 << 2)
291 #ifdef LNET_USE_LIB_FREELIST
294 /* single contiguous array of objects */
296 /* the number of them */
298 /* the size (including overhead) of each of them */
300 /* where they are enqueued */
301 struct list_head fl_list;
306 struct list_head fo_list; /* enqueue on fl_list */
307 void *fo_contents; /* aligned contents */
312 /* info about peers we are trying to fail */
313 struct list_head tp_list; /* ln_test_peers */
314 lnet_nid_t tp_nid; /* matching nid */
315 unsigned int tp_threshold; /* # failures to simulate */
318 #define LNET_COOKIE_TYPE_MD 1
319 #define LNET_COOKIE_TYPE_ME 2
320 #define LNET_COOKIE_TYPE_EQ 3
321 #define LNET_COOKIE_TYPE_BITS 2
322 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
324 struct lnet_ni; /* forward ref */
326 typedef struct lnet_lnd
328 /* fields managed by portals */
329 struct list_head lnd_list; /* stash in the LND table */
330 int lnd_refcount; /* # active instances */
332 /* fields initialised by the LND */
333 unsigned int lnd_type;
335 int (*lnd_startup) (struct lnet_ni *ni);
336 void (*lnd_shutdown) (struct lnet_ni *ni);
337 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
339 /* In data movement APIs below, payload buffers are described as a set
340 * of 'niov' fragments which are...
342 * in virtual memory (struct iovec *iov != NULL)
344 * in pages (kernel only: plt_kiov_t *kiov != NULL).
345 * The LND may NOT overwrite these fragment descriptors.
346 * An 'offset' and may specify a byte offset within the set of
347 * fragments to start from
350 /* Start sending a preformatted message. 'private' is NULL for PUT and
351 * GET messages; otherwise this is a response to an incoming message
352 * and 'private' is the 'private' passed to lnet_parse(). Return
353 * non-zero for immediate failure, otherwise complete later with
355 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
357 /* Start receiving 'mlen' bytes of payload data, skipping the following
358 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
359 * lnet_parse(). Return non-zero for immedaite failure, otherwise
360 * complete later with lnet_finalize(). This also gives back a receive
361 * credit if the LND does flow control. */
362 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
363 int delayed, unsigned int niov,
364 struct iovec *iov, lnet_kiov_t *kiov,
365 unsigned int offset, unsigned int mlen, unsigned int rlen);
367 /* lnet_parse() has had to delay processing of this message
368 * (e.g. waiting for a forwarding buffer or send credits). Give the
369 * LND a chance to free urgently needed resources. If called, return 0
370 * for success and do NOT give back a receive credit; that has to wait
371 * until lnd_recv() gets called. On failure return < 0 and
372 * release resources; lnd_recv() will not be called. */
373 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
374 void **new_privatep);
376 /* notification of peer health */
377 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
379 /* query of peer aliveness */
380 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
382 #if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
383 /* accept a new connection */
384 int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
388 /* wait for something to happen */
389 void (*lnd_wait)(struct lnet_ni *ni, int milliseconds);
391 /* ensure non-RDMA messages can be received outside liblustre */
392 int (*lnd_setasync)(struct lnet_ni *ni, lnet_process_id_t id, int nasync);
396 #define LNET_NI_STATUS_UP 0x15aac0de
397 #define LNET_NI_STATUS_DOWN 0xdeadface
398 #define LNET_NI_STATUS_INVALID 0x00000000
403 } WIRE_ATTR lnet_ni_status_t;
405 struct lnet_tx_queue {
406 int tq_credits; /* # tx credits free */
407 int tq_credits_min; /* lowest it's been */
408 int tq_credits_max; /* total # tx credits */
409 struct list_head tq_delayed; /* delayed TXs */
412 #define LNET_MAX_INTERFACES 16
414 typedef struct lnet_ni {
418 # ifndef HAVE_LIBPTHREAD
421 pthread_mutex_t ni_lock;
424 struct list_head ni_list; /* chain on ln_nis */
425 struct list_head ni_cptlist; /* chain on ln_nis_cpt */
426 int ni_maxtxcredits; /* # tx credits */
427 /* # per-peer send credits */
428 int ni_peertxcredits;
429 /* # per-peer router buffer credits */
430 int ni_peerrtrcredits;
431 /* seconds to consider peer dead */
433 int ni_ncpts; /* number of CPTs */
434 __u32 *ni_cpts; /* bond NI on some CPTs */
435 lnet_nid_t ni_nid; /* interface's NID */
436 void *ni_data; /* instance-specific data */
437 lnd_t *ni_lnd; /* procedural interface */
438 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
439 int **ni_refs; /* percpt reference count */
440 long ni_last_alive; /* when I was last alive */
441 lnet_ni_status_t *ni_status; /* my health status */
442 /* equivalent interfaces to use */
443 char *ni_interfaces[LNET_MAX_INTERFACES];
446 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
448 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
449 * of old LNet, so there shouldn't be any compatibility issue */
450 #define LNET_PING_FEAT_INVAL (0) /* no feature */
451 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
452 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
453 #define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */
455 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
456 LNET_PING_FEAT_NI_STATUS)
463 lnet_ni_status_t pi_ni[0];
464 } WIRE_ATTR lnet_ping_info_t;
466 /* router checker data, per router */
467 #define LNET_MAX_RTR_NIS 16
468 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
470 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
471 struct list_head rcd_list;
472 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
473 struct lnet_peer *rcd_gateway; /* reference to gateway */
474 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
477 typedef struct lnet_peer {
478 /* chain on peer hash */
479 struct list_head lp_hashlist;
480 /* messages blocking for tx credits */
481 struct list_head lp_txq;
482 /* messages blocking for router credits */
483 struct list_head lp_rtrq;
484 /* chain on router list */
485 struct list_head lp_rtr_list;
486 /* # tx credits available */
490 /* # router credits */
493 int lp_minrtrcredits;
495 unsigned int lp_alive:1;
496 /* notification outstanding? */
497 unsigned int lp_notify:1;
498 /* outstanding notification for LND? */
499 unsigned int lp_notifylnd:1;
500 /* some thread is handling notification */
501 unsigned int lp_notifying:1;
502 /* SEND event outstanding from ping */
503 unsigned int lp_ping_notsent;
504 /* # times router went dead<->alive */
506 /* bytes queued for sending */
508 /* time of last aliveness news */
509 cfs_time_t lp_timestamp;
510 /* time of last ping attempt */
511 cfs_time_t lp_ping_timestamp;
512 /* != 0 if ping reply expected */
513 cfs_time_t lp_ping_deadline;
514 /* when I was last alive */
515 cfs_time_t lp_last_alive;
516 /* when lp_ni was queried last time */
517 cfs_time_t lp_last_query;
518 /* interface peer is on */
520 lnet_nid_t lp_nid; /* peer's NID */
521 int lp_refcount; /* # refs */
522 int lp_cpt; /* CPT this peer attached on */
523 /* # refs from lnet_route_t::lr_gateway */
525 /* returned RC ping features */
526 unsigned int lp_ping_feats;
527 struct list_head lp_routes; /* routers on this peer */
528 lnet_rc_data_t *lp_rcd; /* router checker state */
532 #define LNET_PEER_HASH_BITS 9
533 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
535 /* peer hash table */
536 struct lnet_peer_table {
537 int pt_version; /* /proc validity stamp */
538 int pt_number; /* # peers extant */
539 int pt_zombies; /* # zombies to go to deathrow
540 * (and not there yet) */
541 struct list_head pt_deathrow; /* zombie peers */
542 struct list_head *pt_hash; /* NID->peer hash */
545 /* peer aliveness is enabled only on routers for peers in a network where the
546 * lnet_ni_t::ni_peertimeout has been set to a positive value */
547 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
548 (lp)->lp_ni->ni_peertimeout > 0)
551 struct list_head lr_list; /* chain on net */
552 struct list_head lr_gwlist; /* chain on gateway */
553 lnet_peer_t *lr_gateway; /* router node */
554 __u32 lr_net; /* remote network number */
555 int lr_seq; /* sequence for round-robin */
556 unsigned int lr_downis; /* number of down NIs */
557 unsigned int lr_hops; /* how far I am */
558 unsigned int lr_priority; /* route priority */
561 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
562 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
563 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
566 /* chain on ln_remote_nets_hash */
567 struct list_head lrn_list;
569 struct list_head lrn_routes;
575 /* my free buffer pool */
576 struct list_head rbp_bufs;
577 /* messages blocking for a buffer */
578 struct list_head rbp_msgs;
579 /* # pages in each buffer */
583 /* # free buffers / blocked messages */
590 struct list_head rb_list; /* chain on rbp_bufs */
591 lnet_rtrbufpool_t *rb_pool; /* owning pool */
592 lnet_kiov_t rb_kiov[0]; /* the buffer space */
607 } WIRE_ATTR lnet_counters_t;
609 #define LNET_PEER_HASHSIZE 503 /* prime! */
611 #define LNET_TINY_BUF_IDX 0
612 #define LNET_SMALL_BUF_IDX 1
613 #define LNET_LARGE_BUF_IDX 2
615 /* # different router buffer pools */
616 #define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1)
619 /* Didn't match anything */
620 LNET_MATCHMD_NONE = (1 << 0),
622 LNET_MATCHMD_OK = (1 << 1),
623 /* Must be discarded */
624 LNET_MATCHMD_DROP = (1 << 2),
625 /* match and buffer is exhausted */
626 LNET_MATCHMD_EXHAUSTED = (1 << 3),
628 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
631 /* Options for lnet_portal_t::ptl_options */
632 #define LNET_PTL_LAZY (1 << 0)
633 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
634 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
636 /* parameter for matching operations (GET, PUT) */
637 struct lnet_match_info {
639 lnet_process_id_t mi_id;
641 unsigned int mi_portal;
642 unsigned int mi_rlength;
643 unsigned int mi_roffset;
646 /* ME hash of RDMA portal */
647 #define LNET_MT_HASH_BITS 8
648 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
649 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
650 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
651 * the last entry is reserved for MEs with ignore-bits */
652 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
653 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
654 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
655 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
656 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
657 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
658 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
660 /* portal match table */
661 struct lnet_match_table {
662 /* reserved for upcoming patches, CPU partition ID */
664 unsigned int mt_portal; /* portal index */
665 /* match table is set as "enabled" if there's non-exhausted MD
666 * attached on mt_mhash, it's only valide for wildcard portal */
667 unsigned int mt_enabled;
668 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
669 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
670 struct list_head *mt_mhash; /* matching hash */
673 /* these are only useful for wildcard portal */
674 /* Turn off message rotor for wildcard portals */
675 #define LNET_PTL_ROTOR_OFF 0
676 /* round-robin dispatch all PUT messages for wildcard portals */
677 #define LNET_PTL_ROTOR_ON 1
678 /* round-robin dispatch routed PUT message for wildcard portals */
679 #define LNET_PTL_ROTOR_RR_RT 2
680 /* dispatch routed PUT message by hashing source NID for wildcard portals */
681 #define LNET_PTL_ROTOR_HASH_RT 3
683 typedef struct lnet_portal {
687 # ifndef HAVE_LIBPTHREAD
690 pthread_mutex_t ptl_lock;
693 unsigned int ptl_index; /* portal ID, reserved */
694 /* flags on this portal: lazy, unique... */
695 unsigned int ptl_options;
696 /* list of messags which are stealing buffer */
697 struct list_head ptl_msg_stealing;
698 /* messages blocking for MD */
699 struct list_head ptl_msg_delayed;
700 /* Match table for each CPT */
701 struct lnet_match_table **ptl_mtables;
702 /* spread rotor of incoming "PUT" */
704 /* # active entries for this portal */
706 /* array of active entries' cpu-partition-id */
710 #define LNET_LH_HASH_BITS 12
711 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
712 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
714 /* resource container (ME, MD, EQ) */
715 struct lnet_res_container {
716 unsigned int rec_type; /* container type */
717 __u64 rec_lh_cookie; /* cookie generator */
718 struct list_head rec_active; /* active resource list */
719 struct list_head *rec_lh_hash; /* handle hash */
720 #ifdef LNET_USE_LIB_FREELIST
721 lnet_freelist_t rec_freelist; /* freelist for resources */
725 /* message container */
726 struct lnet_msg_container {
727 int msc_init; /* initialized or not */
728 /* max # threads finalizing */
730 /* msgs waiting to complete finalizing */
731 struct list_head msc_finalizing;
732 struct list_head msc_active; /* active message list */
733 /* threads doing finalization */
734 void **msc_finalizers;
735 #ifdef LNET_USE_LIB_FREELIST
736 lnet_freelist_t msc_freelist; /* freelist for messages */
740 /* Router Checker states */
741 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
742 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
743 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
747 /* CPU partition table of LNet */
748 struct cfs_cpt_table *ln_cpt_table;
749 /* number of CPTs in ln_cpt_table */
750 unsigned int ln_cpt_number;
751 unsigned int ln_cpt_bits;
753 /* protect LNet resources (ME/MD/EQ) */
754 struct cfs_percpt_lock *ln_res_lock;
757 /* the vector of portals */
758 lnet_portal_t **ln_portals;
759 /* percpt ME containers */
760 struct lnet_res_container **ln_me_containers;
761 /* percpt MD container */
762 struct lnet_res_container **ln_md_containers;
764 /* Event Queue container */
765 struct lnet_res_container ln_eq_container;
767 wait_queue_head_t ln_eq_waitq;
768 spinlock_t ln_eq_wait_lock;
770 # ifndef HAVE_LIBPTHREAD
773 pthread_cond_t ln_eq_cond;
774 pthread_mutex_t ln_eq_wait_lock;
777 unsigned int ln_remote_nets_hbits;
779 /* protect NI, peer table, credits, routers, rtrbuf... */
780 struct cfs_percpt_lock *ln_net_lock;
781 /* percpt message containers for active/finalizing/freed message */
782 struct lnet_msg_container **ln_msg_containers;
783 lnet_counters_t **ln_counters;
784 struct lnet_peer_table **ln_peer_tables;
785 /* failure simulation */
786 struct list_head ln_test_peers;
788 struct list_head ln_nis; /* LND instances */
789 /* NIs bond on specific CPT(s) */
790 struct list_head ln_nis_cpt;
791 /* dying LND instances */
792 struct list_head ln_nis_zombie;
793 lnet_ni_t *ln_loni; /* the loopback NI */
794 /* NI to wait for events in */
795 lnet_ni_t *ln_eq_waitni;
797 /* remote networks with routes to them */
798 struct list_head *ln_remote_nets_hash;
800 __u64 ln_remote_nets_version;
801 /* list of all known routers */
802 struct list_head ln_routers;
804 __u64 ln_routers_version;
805 /* percpt router buffer pools */
806 lnet_rtrbufpool_t **ln_rtrpools;
808 lnet_handle_md_t ln_ping_target_md;
809 lnet_handle_eq_t ln_ping_target_eq;
810 lnet_ping_info_t *ln_ping_info;
812 /* router checker startup/shutdown state */
814 /* router checker's event queue */
815 lnet_handle_eq_t ln_rc_eqh;
816 /* rcd still pending on net */
817 struct list_head ln_rcd_deathrow;
818 /* rcd ready for free */
819 struct list_head ln_rcd_zombie;
821 /* serialise startup/shutdown */
822 struct semaphore ln_rc_signal;
824 struct mutex ln_api_mutex;
825 struct mutex ln_lnd_mutex;
827 # ifndef HAVE_LIBPTHREAD
831 pthread_mutex_t ln_api_mutex;
832 pthread_mutex_t ln_lnd_mutex;
835 int ln_init; /* LNetInit() called? */
836 /* Have I called LNetNIInit myself? */
838 /* LNetNIInit/LNetNIFini counter */
840 /* shutdown in progress */
843 int ln_routing; /* am I a router? */
844 lnet_pid_t ln_pid; /* requested pid */
845 /* uniquely identifies this ni in this epoch */
846 __u64 ln_interface_cookie;
847 /* registered LNDs */
848 struct list_head ln_lnds;
850 /* test protocol compatibility flags */
851 int ln_testprotocompat;
854 /* Temporary workaround to allow uOSS and test programs force
855 * server mode in userspace. The only place where we use it is
856 * lnet_prepare(). The only way to turn this flag on is to
857 * call lnet_server_mode() */
858 int ln_server_mode_flag;