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 #include <lnet/linux/lib-types.h>
47 #include <libcfs/libcfs.h>
48 #include <libcfs/list.h>
49 #include <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 /* commited for sending */
185 unsigned int msg_tx_committed:1;
186 /* CPT # this message committed for sending */
187 unsigned int msg_tx_cpt:15;
188 /* commited 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)
283 #define LNET_MD_FLAG_ABORTED (1 << 2)
285 #ifdef LNET_USE_LIB_FREELIST
288 /* single contiguous array of objects */
290 /* the number of them */
292 /* the size (including overhead) of each of them */
294 /* where they are enqueued */
295 struct list_head fl_list;
300 struct list_head fo_list; /* enqueue on fl_list */
301 void *fo_contents; /* aligned contents */
306 /* info about peers we are trying to fail */
307 struct list_head tp_list; /* ln_test_peers */
308 lnet_nid_t tp_nid; /* matching nid */
309 unsigned int tp_threshold; /* # failures to simulate */
312 #define LNET_COOKIE_TYPE_MD 1
313 #define LNET_COOKIE_TYPE_ME 2
314 #define LNET_COOKIE_TYPE_EQ 3
315 #define LNET_COOKIE_TYPE_BITS 2
316 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
318 struct lnet_ni; /* forward ref */
320 typedef struct lnet_lnd
322 /* fields managed by portals */
323 struct list_head lnd_list; /* stash in the LND table */
324 int lnd_refcount; /* # active instances */
326 /* fields initialised by the LND */
327 unsigned int lnd_type;
329 int (*lnd_startup) (struct lnet_ni *ni);
330 void (*lnd_shutdown) (struct lnet_ni *ni);
331 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
333 /* In data movement APIs below, payload buffers are described as a set
334 * of 'niov' fragments which are...
336 * in virtual memory (struct iovec *iov != NULL)
338 * in pages (kernel only: plt_kiov_t *kiov != NULL).
339 * The LND may NOT overwrite these fragment descriptors.
340 * An 'offset' and may specify a byte offset within the set of
341 * fragments to start from
344 /* Start sending a preformatted message. 'private' is NULL for PUT and
345 * GET messages; otherwise this is a response to an incoming message
346 * and 'private' is the 'private' passed to lnet_parse(). Return
347 * non-zero for immediate failure, otherwise complete later with
349 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
351 /* Start receiving 'mlen' bytes of payload data, skipping the following
352 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
353 * lnet_parse(). Return non-zero for immedaite failure, otherwise
354 * complete later with lnet_finalize(). This also gives back a receive
355 * credit if the LND does flow control. */
356 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
357 int delayed, unsigned int niov,
358 struct iovec *iov, lnet_kiov_t *kiov,
359 unsigned int offset, unsigned int mlen, unsigned int rlen);
361 /* lnet_parse() has had to delay processing of this message
362 * (e.g. waiting for a forwarding buffer or send credits). Give the
363 * LND a chance to free urgently needed resources. If called, return 0
364 * for success and do NOT give back a receive credit; that has to wait
365 * until lnd_recv() gets called. On failure return < 0 and
366 * release resources; lnd_recv() will not be called. */
367 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
368 void **new_privatep);
370 /* notification of peer health */
371 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
373 /* query of peer aliveness */
374 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
376 #if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
377 /* accept a new connection */
378 int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
382 /* wait for something to happen */
383 void (*lnd_wait)(struct lnet_ni *ni, int milliseconds);
385 /* ensure non-RDMA messages can be received outside liblustre */
386 int (*lnd_setasync)(struct lnet_ni *ni, lnet_process_id_t id, int nasync);
390 #define LNET_NI_STATUS_UP 0x15aac0de
391 #define LNET_NI_STATUS_DOWN 0xdeadface
392 #define LNET_NI_STATUS_INVALID 0x00000000
397 } WIRE_ATTR lnet_ni_status_t;
399 struct lnet_tx_queue {
400 int tq_credits; /* # tx credits free */
401 int tq_credits_min; /* lowest it's been */
402 int tq_credits_max; /* total # tx credits */
403 struct list_head tq_delayed; /* delayed TXs */
406 #define LNET_MAX_INTERFACES 16
408 typedef struct lnet_ni {
412 # ifndef HAVE_LIBPTHREAD
415 pthread_mutex_t ni_lock;
418 struct list_head ni_list; /* chain on ln_nis */
419 struct list_head ni_cptlist; /* chain on ln_nis_cpt */
420 int ni_maxtxcredits; /* # tx credits */
421 /* # per-peer send credits */
422 int ni_peertxcredits;
423 /* # per-peer router buffer credits */
424 int ni_peerrtrcredits;
425 /* seconds to consider peer dead */
427 int ni_ncpts; /* number of CPTs */
428 __u32 *ni_cpts; /* bond NI on some CPTs */
429 lnet_nid_t ni_nid; /* interface's NID */
430 void *ni_data; /* instance-specific data */
431 lnd_t *ni_lnd; /* procedural interface */
432 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
433 int **ni_refs; /* percpt reference count */
434 long ni_last_alive; /* when I was last alive */
435 lnet_ni_status_t *ni_status; /* my health status */
436 /* equivalent interfaces to use */
437 char *ni_interfaces[LNET_MAX_INTERFACES];
440 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
442 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
443 * of old LNet, so there shouldn't be any compatibility issue */
444 #define LNET_PING_FEAT_INVAL (0) /* no feature */
445 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
446 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
447 #define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */
449 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
450 LNET_PING_FEAT_NI_STATUS)
457 lnet_ni_status_t pi_ni[0];
458 } WIRE_ATTR lnet_ping_info_t;
460 /* router checker data, per router */
461 #define LNET_MAX_RTR_NIS 16
462 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
464 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
465 struct list_head rcd_list;
466 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
467 struct lnet_peer *rcd_gateway; /* reference to gateway */
468 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
471 typedef struct lnet_peer {
472 /* chain on peer hash */
473 struct list_head lp_hashlist;
474 /* messages blocking for tx credits */
475 struct list_head lp_txq;
476 /* messages blocking for router credits */
477 struct list_head lp_rtrq;
478 /* chain on router list */
479 struct list_head lp_rtr_list;
480 /* # tx credits available */
484 /* # router credits */
487 int lp_minrtrcredits;
489 unsigned int lp_alive:1;
490 /* notification outstanding? */
491 unsigned int lp_notify:1;
492 /* outstanding notification for LND? */
493 unsigned int lp_notifylnd:1;
494 /* some thread is handling notification */
495 unsigned int lp_notifying:1;
496 /* SEND event outstanding from ping */
497 unsigned int lp_ping_notsent;
498 /* # times router went dead<->alive */
500 /* bytes queued for sending */
502 /* time of last aliveness news */
503 cfs_time_t lp_timestamp;
504 /* time of last ping attempt */
505 cfs_time_t lp_ping_timestamp;
506 /* != 0 if ping reply expected */
507 cfs_time_t lp_ping_deadline;
508 /* when I was last alive */
509 cfs_time_t lp_last_alive;
510 /* when lp_ni was queried last time */
511 cfs_time_t lp_last_query;
512 /* interface peer is on */
514 lnet_nid_t lp_nid; /* peer's NID */
515 int lp_refcount; /* # refs */
516 int lp_cpt; /* CPT this peer attached on */
517 /* # refs from lnet_route_t::lr_gateway */
519 /* returned RC ping features */
520 unsigned int lp_ping_feats;
521 struct list_head lp_routes; /* routers on this peer */
522 lnet_rc_data_t *lp_rcd; /* router checker state */
526 #define LNET_PEER_HASH_BITS 9
527 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
529 /* peer hash table */
530 struct lnet_peer_table {
531 int pt_version; /* /proc validity stamp */
532 int pt_number; /* # peers extant */
533 int pt_zombies; /* # zombies to go to deathrow
534 * (and not there yet) */
535 struct list_head pt_deathrow; /* zombie peers */
536 struct list_head *pt_hash; /* NID->peer hash */
539 /* peer aliveness is enabled only on routers for peers in a network where the
540 * lnet_ni_t::ni_peertimeout has been set to a positive value */
541 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
542 (lp)->lp_ni->ni_peertimeout > 0)
545 struct list_head lr_list; /* chain on net */
546 struct list_head lr_gwlist; /* chain on gateway */
547 lnet_peer_t *lr_gateway; /* router node */
548 __u32 lr_net; /* remote network number */
549 int lr_seq; /* sequence for round-robin */
550 unsigned int lr_downis; /* number of down NIs */
551 unsigned int lr_hops; /* how far I am */
552 unsigned int lr_priority; /* route priority */
555 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
556 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
557 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
560 /* chain on ln_remote_nets_hash */
561 struct list_head lrn_list;
563 struct list_head lrn_routes;
569 /* my free buffer pool */
570 struct list_head rbp_bufs;
571 /* messages blocking for a buffer */
572 struct list_head rbp_msgs;
573 /* # pages in each buffer */
577 /* # free buffers / blocked messages */
584 struct list_head rb_list; /* chain on rbp_bufs */
585 lnet_rtrbufpool_t *rb_pool; /* owning pool */
586 lnet_kiov_t rb_kiov[0]; /* the buffer space */
589 typedef struct lnet_counters {
601 } WIRE_ATTR lnet_counters_t;
603 #define LNET_PEER_HASHSIZE 503 /* prime! */
605 #define LNET_TINY_BUF_IDX 0
606 #define LNET_SMALL_BUF_IDX 1
607 #define LNET_LARGE_BUF_IDX 2
609 /* # different router buffer pools */
610 #define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1)
613 /* Didn't match anything */
614 LNET_MATCHMD_NONE = (1 << 0),
616 LNET_MATCHMD_OK = (1 << 1),
617 /* Must be discarded */
618 LNET_MATCHMD_DROP = (1 << 2),
619 /* match and buffer is exhausted */
620 LNET_MATCHMD_EXHAUSTED = (1 << 3),
622 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
625 /* Options for lnet_portal_t::ptl_options */
626 #define LNET_PTL_LAZY (1 << 0)
627 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
628 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
630 /* parameter for matching operations (GET, PUT) */
631 struct lnet_match_info {
633 lnet_process_id_t mi_id;
635 unsigned int mi_portal;
636 unsigned int mi_rlength;
637 unsigned int mi_roffset;
640 /* ME hash of RDMA portal */
641 #define LNET_MT_HASH_BITS 8
642 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
643 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
644 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
645 * the last entry is reserved for MEs with ignore-bits */
646 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
647 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
648 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
649 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
650 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
651 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
652 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
654 /* portal match table */
655 struct lnet_match_table {
656 /* reserved for upcoming patches, CPU partition ID */
658 unsigned int mt_portal; /* portal index */
659 /* match table is set as "enabled" if there's non-exhausted MD
660 * attached on mt_mhash, it's only valide for wildcard portal */
661 unsigned int mt_enabled;
662 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
663 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
664 struct list_head *mt_mhash; /* matching hash */
667 /* these are only useful for wildcard portal */
668 /* Turn off message rotor for wildcard portals */
669 #define LNET_PTL_ROTOR_OFF 0
670 /* round-robin dispatch all PUT messages for wildcard portals */
671 #define LNET_PTL_ROTOR_ON 1
672 /* round-robin dispatch routed PUT message for wildcard portals */
673 #define LNET_PTL_ROTOR_RR_RT 2
674 /* dispatch routed PUT message by hashing source NID for wildcard portals */
675 #define LNET_PTL_ROTOR_HASH_RT 3
677 typedef struct lnet_portal {
681 # ifndef HAVE_LIBPTHREAD
684 pthread_mutex_t ptl_lock;
687 unsigned int ptl_index; /* portal ID, reserved */
688 /* flags on this portal: lazy, unique... */
689 unsigned int ptl_options;
690 /* list of messags which are stealing buffer */
691 struct list_head ptl_msg_stealing;
692 /* messages blocking for MD */
693 struct list_head ptl_msg_delayed;
694 /* Match table for each CPT */
695 struct lnet_match_table **ptl_mtables;
696 /* spread rotor of incoming "PUT" */
698 /* # active entries for this portal */
700 /* array of active entries' cpu-partition-id */
704 #define LNET_LH_HASH_BITS 12
705 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
706 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
708 /* resource container (ME, MD, EQ) */
709 struct lnet_res_container {
710 unsigned int rec_type; /* container type */
711 __u64 rec_lh_cookie; /* cookie generator */
712 struct list_head rec_active; /* active resource list */
713 struct list_head *rec_lh_hash; /* handle hash */
714 #ifdef LNET_USE_LIB_FREELIST
715 lnet_freelist_t rec_freelist; /* freelist for resources */
719 /* message container */
720 struct lnet_msg_container {
721 int msc_init; /* initialized or not */
722 /* max # threads finalizing */
724 /* msgs waiting to complete finalizing */
725 struct list_head msc_finalizing;
726 struct list_head msc_active; /* active message list */
727 /* threads doing finalization */
728 void **msc_finalizers;
729 #ifdef LNET_USE_LIB_FREELIST
730 lnet_freelist_t msc_freelist; /* freelist for messages */
734 /* Router Checker states */
735 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
736 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
737 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
741 /* CPU partition table of LNet */
742 struct cfs_cpt_table *ln_cpt_table;
743 /* number of CPTs in ln_cpt_table */
744 unsigned int ln_cpt_number;
745 unsigned int ln_cpt_bits;
747 /* protect LNet resources (ME/MD/EQ) */
748 struct cfs_percpt_lock *ln_res_lock;
751 /* the vector of portals */
752 lnet_portal_t **ln_portals;
753 /* percpt ME containers */
754 struct lnet_res_container **ln_me_containers;
755 /* percpt MD container */
756 struct lnet_res_container **ln_md_containers;
758 /* Event Queue container */
759 struct lnet_res_container ln_eq_container;
761 wait_queue_head_t ln_eq_waitq;
762 spinlock_t ln_eq_wait_lock;
764 # ifndef HAVE_LIBPTHREAD
767 pthread_cond_t ln_eq_cond;
768 pthread_mutex_t ln_eq_wait_lock;
771 unsigned int ln_remote_nets_hbits;
773 /* protect NI, peer table, credits, routers, rtrbuf... */
774 struct cfs_percpt_lock *ln_net_lock;
775 /* percpt message containers for active/finalizing/freed message */
776 struct lnet_msg_container **ln_msg_containers;
777 lnet_counters_t **ln_counters;
778 struct lnet_peer_table **ln_peer_tables;
779 /* failure simulation */
780 struct list_head ln_test_peers;
782 struct list_head ln_nis; /* LND instances */
783 /* NIs bond on specific CPT(s) */
784 struct list_head ln_nis_cpt;
785 /* dying LND instances */
786 struct list_head ln_nis_zombie;
787 lnet_ni_t *ln_loni; /* the loopback NI */
788 /* NI to wait for events in */
789 lnet_ni_t *ln_eq_waitni;
791 /* remote networks with routes to them */
792 struct list_head *ln_remote_nets_hash;
794 __u64 ln_remote_nets_version;
795 /* list of all known routers */
796 struct list_head ln_routers;
798 __u64 ln_routers_version;
799 /* percpt router buffer pools */
800 lnet_rtrbufpool_t **ln_rtrpools;
802 lnet_handle_md_t ln_ping_target_md;
803 lnet_handle_eq_t ln_ping_target_eq;
804 lnet_ping_info_t *ln_ping_info;
806 /* router checker startup/shutdown state */
808 /* router checker's event queue */
809 lnet_handle_eq_t ln_rc_eqh;
810 /* rcd still pending on net */
811 struct list_head ln_rcd_deathrow;
812 /* rcd ready for free */
813 struct list_head ln_rcd_zombie;
815 /* serialise startup/shutdown */
816 struct semaphore ln_rc_signal;
818 struct mutex ln_api_mutex;
819 struct mutex ln_lnd_mutex;
821 # ifndef HAVE_LIBPTHREAD
825 pthread_mutex_t ln_api_mutex;
826 pthread_mutex_t ln_lnd_mutex;
829 int ln_init; /* LNetInit() called? */
830 /* Have I called LNetNIInit myself? */
832 /* LNetNIInit/LNetNIFini counter */
834 /* shutdown in progress */
837 int ln_routing; /* am I a router? */
838 lnet_pid_t ln_pid; /* requested pid */
839 /* uniquely identifies this ni in this epoch */
840 __u64 ln_interface_cookie;
841 /* registered LNDs */
842 struct list_head ln_lnds;
844 /* test protocol compatibility flags */
845 int ln_testprotocompat;
847 /* 0 - load the NIs from the mod params
848 * 1 - do not load the NIs from the mod params
849 * Reverse logic to ensure that other calls to LNetNIInit
852 bool ln_nis_from_mod_params;
855 /* Temporary workaround to allow uOSS and test programs force
856 * server mode in userspace. The only place where we use it is
857 * lnet_prepare(). The only way to turn this flag on is to
858 * call lnet_server_mode() */
859 int ln_server_mode_flag;