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>
50 #include <lnet/lnetctl.h>
52 #define WIRE_ATTR __attribute__((packed))
54 /* Packed version of lnet_process_id_t to transfer via network */
57 lnet_pid_t pid; /* node id / process id */
58 } WIRE_ATTR lnet_process_id_packed_t;
60 /* The wire handle's interface cookie only matches one network interface in
61 * one epoch (i.e. new cookie when the interface restarts or the node
62 * reboots). The object cookie only matches one object on that interface
63 * during that object's lifetime (i.e. no cookie re-use). */
65 __u64 wh_interface_cookie;
66 __u64 wh_object_cookie;
67 } WIRE_ATTR lnet_handle_wire_t;
77 /* The variant fields of the portals message header are aligned on an 8
78 * byte boundary in the message header. Note that all types used in these
79 * wire structs MUST be fixed size and the smaller types are placed at the
81 typedef struct lnet_ack {
82 lnet_handle_wire_t dst_wmd;
85 } WIRE_ATTR lnet_ack_t;
87 typedef struct lnet_put {
88 lnet_handle_wire_t ack_wmd;
93 } WIRE_ATTR lnet_put_t;
95 typedef struct lnet_get {
96 lnet_handle_wire_t return_wmd;
101 } WIRE_ATTR lnet_get_t;
103 typedef struct lnet_reply {
104 lnet_handle_wire_t dst_wmd;
105 } WIRE_ATTR lnet_reply_t;
107 typedef struct lnet_hello {
110 } WIRE_ATTR lnet_hello_t;
117 __u32 type; /* lnet_msg_type_t */
118 __u32 payload_length; /* payload data to follow */
119 /*<------__u64 aligned------->*/
127 } WIRE_ATTR lnet_hdr_t;
129 /* A HELLO message contains a magic number and protocol version
130 * code in the header's dest_nid, the peer's NID in the src_nid, and
131 * LNET_MSG_HELLO in the type field. All other common fields are zero
132 * (including payload_size; i.e. no payload).
133 * This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is
134 * running the same protocol and to find out its NID. These LNDs should
135 * exchange HELLO messages when a connection is first established. Individual
136 * LNDs can put whatever else they fancy in lnet_hdr_t::msg.
139 __u32 magic; /* LNET_PROTO_TCP_MAGIC */
140 __u16 version_major; /* increment on incompatible change */
141 __u16 version_minor; /* increment on compatible change */
142 } WIRE_ATTR lnet_magicversion_t;
144 /* PROTO MAGIC for LNDs */
145 #define LNET_PROTO_IB_MAGIC 0x0be91b91
146 #define LNET_PROTO_RA_MAGIC 0x0be91b92
147 #define LNET_PROTO_QSW_MAGIC 0x0be91b93
148 #define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */
149 #define LNET_PROTO_TCP_MAGIC 0xeebc0ded
150 #define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
151 #define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
152 #define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
153 #define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
155 /* Placeholder for a future "unified" protocol across all LNDs */
156 /* Current LNDs that receive a request with this magic will respond with a
157 * "stub" reply using their current protocol */
158 #define LNET_PROTO_MAGIC 0x45726963 /* ! */
161 #define LNET_PROTO_TCP_VERSION_MAJOR 1
162 #define LNET_PROTO_TCP_VERSION_MINOR 0
164 /* Acceptor connection request */
166 __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
167 __u32 acr_version; /* protocol version */
168 __u64 acr_nid; /* target NID */
169 } WIRE_ATTR lnet_acceptor_connreq_t;
171 #define LNET_PROTO_ACCEPTOR_VERSION 1
176 typedef struct lnet_msg {
177 struct list_head msg_activelist;
178 struct list_head msg_list; /* Q for credits/MD */
180 lnet_process_id_t msg_target;
181 /* where is it from, it's only for building event */
185 /* commited for sending */
186 unsigned int msg_tx_committed:1;
187 /* CPT # this message committed for sending */
188 unsigned int msg_tx_cpt:15;
189 /* commited for receiving */
190 unsigned int msg_rx_committed:1;
191 /* CPT # this message committed for receiving */
192 unsigned int msg_rx_cpt:15;
193 /* queued for tx credit */
194 unsigned int msg_tx_delayed:1;
195 /* queued for RX buffer */
196 unsigned int msg_rx_delayed:1;
197 /* ready for pending on RX delay list */
198 unsigned int msg_rx_ready_delay:1;
200 unsigned int msg_vmflush:1; /* VM trying to free memory */
201 unsigned int msg_target_is_router:1; /* sending to a router */
202 unsigned int msg_routing:1; /* being forwarded */
203 unsigned int msg_ack:1; /* ack on finalize (PUT) */
204 unsigned int msg_sending:1; /* outgoing message */
205 unsigned int msg_receiving:1; /* being received */
206 unsigned int msg_txcredit:1; /* taken an NI send credit */
207 unsigned int msg_peertxcredit:1; /* taken a peer send credit */
208 unsigned int msg_rtrcredit:1; /* taken a globel router credit */
209 unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
210 unsigned int msg_onactivelist:1; /* on the activelist */
211 unsigned int msg_rdma_get:1;
213 struct lnet_peer *msg_txpeer; /* peer I'm sending to */
214 struct lnet_peer *msg_rxpeer; /* peer I received from */
217 struct lnet_libmd *msg_md;
219 unsigned int msg_len;
220 unsigned int msg_wanted;
221 unsigned int msg_offset;
222 unsigned int msg_niov;
223 struct iovec *msg_iov;
224 lnet_kiov_t *msg_kiov;
231 typedef struct lnet_libhandle {
232 struct list_head lh_hash_chain;
236 #define lh_entry(ptr, type, member) \
237 ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
239 typedef struct lnet_eq {
240 struct list_head eq_list;
241 lnet_libhandle_t eq_lh;
242 lnet_seq_t eq_enq_seq;
243 lnet_seq_t eq_deq_seq;
244 unsigned int eq_size;
245 lnet_eq_handler_t eq_callback;
246 lnet_event_t *eq_events;
247 int **eq_refs; /* percpt refcount for EQ */
250 typedef struct lnet_me {
251 struct list_head me_list;
252 lnet_libhandle_t me_lh;
253 lnet_process_id_t me_match_id;
254 unsigned int me_portal;
255 unsigned int me_pos; /* hash offset in mt_hash */
257 __u64 me_ignore_bits;
258 lnet_unlink_t me_unlink;
259 struct lnet_libmd *me_md;
262 typedef struct lnet_libmd {
263 struct list_head md_list;
264 lnet_libhandle_t md_lh;
267 unsigned int md_offset;
268 unsigned int md_length;
269 unsigned int md_max_size;
272 unsigned int md_options;
273 unsigned int md_flags;
276 unsigned int md_niov; /* # frags */
278 struct iovec iov[LNET_MAX_IOV];
279 lnet_kiov_t kiov[LNET_MAX_IOV];
283 #define LNET_MD_FLAG_ZOMBIE (1 << 0)
284 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
285 #define LNET_MD_FLAG_ABORTED (1 << 2)
287 #ifdef LNET_USE_LIB_FREELIST
290 /* single contiguous array of objects */
292 /* the number of them */
294 /* the size (including overhead) of each of them */
296 /* where they are enqueued */
297 struct list_head fl_list;
302 struct list_head fo_list; /* enqueue on fl_list */
303 void *fo_contents; /* aligned contents */
308 /* info about peers we are trying to fail */
309 struct list_head tp_list; /* ln_test_peers */
310 lnet_nid_t tp_nid; /* matching nid */
311 unsigned int tp_threshold; /* # failures to simulate */
314 #define LNET_COOKIE_TYPE_MD 1
315 #define LNET_COOKIE_TYPE_ME 2
316 #define LNET_COOKIE_TYPE_EQ 3
317 #define LNET_COOKIE_TYPE_BITS 2
318 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
320 struct lnet_ni; /* forward ref */
322 typedef struct lnet_lnd
324 /* fields managed by portals */
325 struct list_head lnd_list; /* stash in the LND table */
326 int lnd_refcount; /* # active instances */
328 /* fields initialised by the LND */
329 unsigned int lnd_type;
331 int (*lnd_startup) (struct lnet_ni *ni);
332 void (*lnd_shutdown) (struct lnet_ni *ni);
333 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
335 /* In data movement APIs below, payload buffers are described as a set
336 * of 'niov' fragments which are...
338 * in virtual memory (struct iovec *iov != NULL)
340 * in pages (kernel only: plt_kiov_t *kiov != NULL).
341 * The LND may NOT overwrite these fragment descriptors.
342 * An 'offset' and may specify a byte offset within the set of
343 * fragments to start from
346 /* Start sending a preformatted message. 'private' is NULL for PUT and
347 * GET messages; otherwise this is a response to an incoming message
348 * and 'private' is the 'private' passed to lnet_parse(). Return
349 * non-zero for immediate failure, otherwise complete later with
351 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
353 /* Start receiving 'mlen' bytes of payload data, skipping the following
354 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
355 * lnet_parse(). Return non-zero for immedaite failure, otherwise
356 * complete later with lnet_finalize(). This also gives back a receive
357 * credit if the LND does flow control. */
358 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
359 int delayed, unsigned int niov,
360 struct iovec *iov, lnet_kiov_t *kiov,
361 unsigned int offset, unsigned int mlen, unsigned int rlen);
363 /* lnet_parse() has had to delay processing of this message
364 * (e.g. waiting for a forwarding buffer or send credits). Give the
365 * LND a chance to free urgently needed resources. If called, return 0
366 * for success and do NOT give back a receive credit; that has to wait
367 * until lnd_recv() gets called. On failure return < 0 and
368 * release resources; lnd_recv() will not be called. */
369 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
370 void **new_privatep);
372 /* notification of peer health */
373 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
375 /* query of peer aliveness */
376 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
378 #if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
379 /* accept a new connection */
380 int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
384 /* wait for something to happen */
385 void (*lnd_wait)(struct lnet_ni *ni, int milliseconds);
387 /* ensure non-RDMA messages can be received outside liblustre */
388 int (*lnd_setasync)(struct lnet_ni *ni, lnet_process_id_t id, int nasync);
392 #define LNET_NI_STATUS_UP 0x15aac0de
393 #define LNET_NI_STATUS_DOWN 0xdeadface
394 #define LNET_NI_STATUS_INVALID 0x00000000
399 } WIRE_ATTR lnet_ni_status_t;
401 struct lnet_tx_queue {
402 int tq_credits; /* # tx credits free */
403 int tq_credits_min; /* lowest it's been */
404 int tq_credits_max; /* total # tx credits */
405 struct list_head tq_delayed; /* delayed TXs */
408 #define LNET_MAX_INTERFACES 16
410 typedef struct lnet_ni {
414 # ifndef HAVE_LIBPTHREAD
417 pthread_mutex_t ni_lock;
420 struct list_head ni_list; /* chain on ln_nis */
421 struct list_head ni_cptlist; /* chain on ln_nis_cpt */
422 int ni_maxtxcredits; /* # tx credits */
423 /* # per-peer send credits */
424 int ni_peertxcredits;
425 /* # per-peer router buffer credits */
426 int ni_peerrtrcredits;
427 /* seconds to consider peer dead */
429 int ni_ncpts; /* number of CPTs */
430 __u32 *ni_cpts; /* bond NI on some CPTs */
431 lnet_nid_t ni_nid; /* interface's NID */
432 void *ni_data; /* instance-specific data */
433 lnd_t *ni_lnd; /* procedural interface */
434 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
435 int **ni_refs; /* percpt reference count */
436 long ni_last_alive; /* when I was last alive */
437 lnet_ni_status_t *ni_status; /* my health status */
438 /* equivalent interfaces to use */
439 char *ni_interfaces[LNET_MAX_INTERFACES];
442 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
444 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
445 * of old LNet, so there shouldn't be any compatibility issue */
446 #define LNET_PING_FEAT_INVAL (0) /* no feature */
447 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
448 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
449 #define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */
451 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
452 LNET_PING_FEAT_NI_STATUS)
459 lnet_ni_status_t pi_ni[0];
460 } WIRE_ATTR lnet_ping_info_t;
462 /* router checker data, per router */
463 #define LNET_MAX_RTR_NIS 16
464 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
466 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
467 struct list_head rcd_list;
468 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
469 struct lnet_peer *rcd_gateway; /* reference to gateway */
470 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
473 typedef struct lnet_peer {
474 /* chain on peer hash */
475 struct list_head lp_hashlist;
476 /* messages blocking for tx credits */
477 struct list_head lp_txq;
478 /* messages blocking for router credits */
479 struct list_head lp_rtrq;
480 /* chain on router list */
481 struct list_head lp_rtr_list;
482 /* # tx credits available */
486 /* # router credits */
489 int lp_minrtrcredits;
491 unsigned int lp_alive:1;
492 /* notification outstanding? */
493 unsigned int lp_notify:1;
494 /* outstanding notification for LND? */
495 unsigned int lp_notifylnd:1;
496 /* some thread is handling notification */
497 unsigned int lp_notifying:1;
498 /* SEND event outstanding from ping */
499 unsigned int lp_ping_notsent;
500 /* # times router went dead<->alive */
502 /* bytes queued for sending */
504 /* time of last aliveness news */
505 cfs_time_t lp_timestamp;
506 /* time of last ping attempt */
507 cfs_time_t lp_ping_timestamp;
508 /* != 0 if ping reply expected */
509 cfs_time_t lp_ping_deadline;
510 /* when I was last alive */
511 cfs_time_t lp_last_alive;
512 /* when lp_ni was queried last time */
513 cfs_time_t lp_last_query;
514 /* interface peer is on */
516 lnet_nid_t lp_nid; /* peer's NID */
517 int lp_refcount; /* # refs */
518 int lp_cpt; /* CPT this peer attached on */
519 /* # refs from lnet_route_t::lr_gateway */
521 /* returned RC ping features */
522 unsigned int lp_ping_feats;
523 struct list_head lp_routes; /* routers on this peer */
524 lnet_rc_data_t *lp_rcd; /* router checker state */
528 #define LNET_PEER_HASH_BITS 9
529 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
531 /* peer hash table */
532 struct lnet_peer_table {
533 int pt_version; /* /proc validity stamp */
534 int pt_number; /* # peers extant */
535 int pt_zombies; /* # zombies to go to deathrow
536 * (and not there yet) */
537 struct list_head pt_deathrow; /* zombie peers */
538 struct list_head *pt_hash; /* NID->peer hash */
541 /* peer aliveness is enabled only on routers for peers in a network where the
542 * lnet_ni_t::ni_peertimeout has been set to a positive value */
543 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
544 (lp)->lp_ni->ni_peertimeout > 0)
547 struct list_head lr_list; /* chain on net */
548 struct list_head lr_gwlist; /* chain on gateway */
549 lnet_peer_t *lr_gateway; /* router node */
550 __u32 lr_net; /* remote network number */
551 int lr_seq; /* sequence for round-robin */
552 unsigned int lr_downis; /* number of down NIs */
553 unsigned int lr_hops; /* how far I am */
554 unsigned int lr_priority; /* route priority */
557 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
558 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
559 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
562 /* chain on ln_remote_nets_hash */
563 struct list_head lrn_list;
565 struct list_head lrn_routes;
570 /** lnet message has credit and can be submitted to lnd for send/receive */
571 #define LNET_CREDIT_OK 0
572 /** lnet message is waiting for credit */
573 #define LNET_CREDIT_WAIT 1
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 */
596 typedef struct lnet_counters {
608 } WIRE_ATTR lnet_counters_t;
610 #define LNET_PEER_HASHSIZE 503 /* prime! */
612 #define LNET_TINY_BUF_IDX 0
613 #define LNET_SMALL_BUF_IDX 1
614 #define LNET_LARGE_BUF_IDX 2
616 /* # different router buffer pools */
617 #define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1)
620 /* Didn't match anything */
621 LNET_MATCHMD_NONE = (1 << 0),
623 LNET_MATCHMD_OK = (1 << 1),
624 /* Must be discarded */
625 LNET_MATCHMD_DROP = (1 << 2),
626 /* match and buffer is exhausted */
627 LNET_MATCHMD_EXHAUSTED = (1 << 3),
629 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
632 /* Options for lnet_portal_t::ptl_options */
633 #define LNET_PTL_LAZY (1 << 0)
634 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
635 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
637 /* parameter for matching operations (GET, PUT) */
638 struct lnet_match_info {
640 lnet_process_id_t mi_id;
642 unsigned int mi_portal;
643 unsigned int mi_rlength;
644 unsigned int mi_roffset;
647 /* ME hash of RDMA portal */
648 #define LNET_MT_HASH_BITS 8
649 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
650 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
651 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
652 * the last entry is reserved for MEs with ignore-bits */
653 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
654 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
655 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
656 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
657 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
658 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
659 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
661 /* portal match table */
662 struct lnet_match_table {
663 /* reserved for upcoming patches, CPU partition ID */
665 unsigned int mt_portal; /* portal index */
666 /* match table is set as "enabled" if there's non-exhausted MD
667 * attached on mt_mhash, it's only valide for wildcard portal */
668 unsigned int mt_enabled;
669 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
670 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
671 struct list_head *mt_mhash; /* matching hash */
674 /* these are only useful for wildcard portal */
675 /* Turn off message rotor for wildcard portals */
676 #define LNET_PTL_ROTOR_OFF 0
677 /* round-robin dispatch all PUT messages for wildcard portals */
678 #define LNET_PTL_ROTOR_ON 1
679 /* round-robin dispatch routed PUT message for wildcard portals */
680 #define LNET_PTL_ROTOR_RR_RT 2
681 /* dispatch routed PUT message by hashing source NID for wildcard portals */
682 #define LNET_PTL_ROTOR_HASH_RT 3
684 typedef struct lnet_portal {
688 # ifndef HAVE_LIBPTHREAD
691 pthread_mutex_t ptl_lock;
694 unsigned int ptl_index; /* portal ID, reserved */
695 /* flags on this portal: lazy, unique... */
696 unsigned int ptl_options;
697 /* list of messags which are stealing buffer */
698 struct list_head ptl_msg_stealing;
699 /* messages blocking for MD */
700 struct list_head ptl_msg_delayed;
701 /* Match table for each CPT */
702 struct lnet_match_table **ptl_mtables;
703 /* spread rotor of incoming "PUT" */
704 unsigned int ptl_rotor;
705 /* # active entries for this portal */
707 /* array of active entries' cpu-partition-id */
711 #define LNET_LH_HASH_BITS 12
712 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
713 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
715 /* resource container (ME, MD, EQ) */
716 struct lnet_res_container {
717 unsigned int rec_type; /* container type */
718 __u64 rec_lh_cookie; /* cookie generator */
719 struct list_head rec_active; /* active resource list */
720 struct list_head *rec_lh_hash; /* handle hash */
721 #ifdef LNET_USE_LIB_FREELIST
722 lnet_freelist_t rec_freelist; /* freelist for resources */
726 /* message container */
727 struct lnet_msg_container {
728 int msc_init; /* initialized or not */
729 /* max # threads finalizing */
731 /* msgs waiting to complete finalizing */
732 struct list_head msc_finalizing;
733 struct list_head msc_active; /* active message list */
734 /* threads doing finalization */
735 void **msc_finalizers;
736 #ifdef LNET_USE_LIB_FREELIST
737 lnet_freelist_t msc_freelist; /* freelist for messages */
741 /* Router Checker states */
742 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
743 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
744 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
748 /* CPU partition table of LNet */
749 struct cfs_cpt_table *ln_cpt_table;
750 /* number of CPTs in ln_cpt_table */
751 unsigned int ln_cpt_number;
752 unsigned int ln_cpt_bits;
754 /* protect LNet resources (ME/MD/EQ) */
755 struct cfs_percpt_lock *ln_res_lock;
758 /* the vector of portals */
759 lnet_portal_t **ln_portals;
760 /* percpt ME containers */
761 struct lnet_res_container **ln_me_containers;
762 /* percpt MD container */
763 struct lnet_res_container **ln_md_containers;
765 /* Event Queue container */
766 struct lnet_res_container ln_eq_container;
768 wait_queue_head_t ln_eq_waitq;
769 spinlock_t ln_eq_wait_lock;
771 # ifndef HAVE_LIBPTHREAD
774 pthread_cond_t ln_eq_cond;
775 pthread_mutex_t ln_eq_wait_lock;
778 unsigned int ln_remote_nets_hbits;
780 /* protect NI, peer table, credits, routers, rtrbuf... */
781 struct cfs_percpt_lock *ln_net_lock;
782 /* percpt message containers for active/finalizing/freed message */
783 struct lnet_msg_container **ln_msg_containers;
784 lnet_counters_t **ln_counters;
785 struct lnet_peer_table **ln_peer_tables;
786 /* failure simulation */
787 struct list_head ln_test_peers;
788 struct list_head ln_drop_rules;
789 struct list_head ln_delay_rules;
791 struct list_head ln_nis; /* LND instances */
792 /* NIs bond on specific CPT(s) */
793 struct list_head ln_nis_cpt;
794 /* dying LND instances */
795 struct list_head ln_nis_zombie;
796 lnet_ni_t *ln_loni; /* the loopback NI */
797 /* NI to wait for events in */
798 lnet_ni_t *ln_eq_waitni;
800 /* remote networks with routes to them */
801 struct list_head *ln_remote_nets_hash;
803 __u64 ln_remote_nets_version;
804 /* list of all known routers */
805 struct list_head ln_routers;
807 __u64 ln_routers_version;
808 /* percpt router buffer pools */
809 lnet_rtrbufpool_t **ln_rtrpools;
811 lnet_handle_md_t ln_ping_target_md;
812 lnet_handle_eq_t ln_ping_target_eq;
813 lnet_ping_info_t *ln_ping_info;
815 /* router checker startup/shutdown state */
817 /* router checker's event queue */
818 lnet_handle_eq_t ln_rc_eqh;
819 /* rcd still pending on net */
820 struct list_head ln_rcd_deathrow;
821 /* rcd ready for free */
822 struct list_head ln_rcd_zombie;
824 /* serialise startup/shutdown */
825 struct semaphore ln_rc_signal;
827 struct mutex ln_api_mutex;
828 struct mutex ln_lnd_mutex;
829 struct mutex ln_delay_mutex;
831 # ifndef HAVE_LIBPTHREAD
835 pthread_mutex_t ln_api_mutex;
836 pthread_mutex_t ln_lnd_mutex;
839 int ln_init; /* LNetInit() called? */
840 /* Have I called LNetNIInit myself? */
842 /* LNetNIInit/LNetNIFini counter */
844 /* shutdown in progress */
847 int ln_routing; /* am I a router? */
848 lnet_pid_t ln_pid; /* requested pid */
849 /* uniquely identifies this ni in this epoch */
850 __u64 ln_interface_cookie;
851 /* registered LNDs */
852 struct list_head ln_lnds;
854 /* test protocol compatibility flags */
855 int ln_testprotocompat;
857 /* 0 - load the NIs from the mod params
858 * 1 - do not load the NIs from the mod params
859 * Reverse logic to ensure that other calls to LNetNIInit
862 bool ln_nis_from_mod_params;
865 /* Temporary workaround to allow uOSS and test programs force
866 * server mode in userspace. The only place where we use it is
867 * lnet_prepare(). The only way to turn this flag on is to
868 * call lnet_server_mode() */
869 int ln_server_mode_flag;