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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lnet/include/lnet/lib-types.h
34 * Types used by the library side routines that do not need to be
35 * exposed to the user application
38 #ifndef __LNET_LIB_TYPES_H__
39 #define __LNET_LIB_TYPES_H__
42 # error This include is only for kernel use.
45 #include <linux/kthread.h>
46 #include <linux/uio.h>
47 #include <linux/types.h>
49 #include <lnet/lnetctl.h>
51 /* Max payload size */
52 #ifndef CONFIG_LNET_MAX_PAYLOAD
53 # error "CONFIG_LNET_MAX_PAYLOAD must be defined in config.h"
56 #define LNET_MAX_PAYLOAD CONFIG_LNET_MAX_PAYLOAD
57 #if (LNET_MAX_PAYLOAD < LNET_MTU)
58 # error "LNET_MAX_PAYLOAD too small - error in configure --with-max-payload-mb"
59 #elif (LNET_MAX_PAYLOAD > (PAGE_SIZE * LNET_MAX_IOV))
60 # error "LNET_MAX_PAYLOAD too large - error in configure --with-max-payload-mb"
66 typedef struct lnet_msg {
67 struct list_head msg_activelist;
68 struct list_head msg_list; /* Q for credits/MD */
70 lnet_process_id_t msg_target;
71 /* Primary NID of the source. */
72 lnet_nid_t msg_initiator;
73 /* where is it from, it's only for building event */
77 /* committed for sending */
78 unsigned int msg_tx_committed:1;
79 /* CPT # this message committed for sending */
80 unsigned int msg_tx_cpt:15;
81 /* committed for receiving */
82 unsigned int msg_rx_committed:1;
83 /* CPT # this message committed for receiving */
84 unsigned int msg_rx_cpt:15;
85 /* queued for tx credit */
86 unsigned int msg_tx_delayed:1;
87 /* queued for RX buffer */
88 unsigned int msg_rx_delayed:1;
89 /* ready for pending on RX delay list */
90 unsigned int msg_rx_ready_delay:1;
92 unsigned int msg_vmflush:1; /* VM trying to free memory */
93 unsigned int msg_target_is_router:1; /* sending to a router */
94 unsigned int msg_routing:1; /* being forwarded */
95 unsigned int msg_ack:1; /* ack on finalize (PUT) */
96 unsigned int msg_sending:1; /* outgoing message */
97 unsigned int msg_receiving:1; /* being received */
98 unsigned int msg_txcredit:1; /* taken an NI send credit */
99 unsigned int msg_peertxcredit:1; /* taken a peer send credit */
100 unsigned int msg_rtrcredit:1; /* taken a globel router credit */
101 unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
102 unsigned int msg_onactivelist:1; /* on the activelist */
103 unsigned int msg_rdma_get:1;
105 struct lnet_peer_ni *msg_txpeer; /* peer I'm sending to */
106 struct lnet_peer_ni *msg_rxpeer; /* peer I received from */
109 struct lnet_libmd *msg_md;
110 /* the NI the message was sent or received over */
111 struct lnet_ni *msg_txni;
112 struct lnet_ni *msg_rxni;
114 unsigned int msg_len;
115 unsigned int msg_wanted;
116 unsigned int msg_offset;
117 unsigned int msg_niov;
118 struct kvec *msg_iov;
119 lnet_kiov_t *msg_kiov;
126 typedef struct lnet_libhandle {
127 struct list_head lh_hash_chain;
131 #define lh_entry(ptr, type, member) \
132 ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
134 typedef struct lnet_eq {
135 struct list_head eq_list;
136 lnet_libhandle_t eq_lh;
137 lnet_seq_t eq_enq_seq;
138 lnet_seq_t eq_deq_seq;
139 unsigned int eq_size;
140 lnet_eq_handler_t eq_callback;
141 lnet_event_t *eq_events;
142 int **eq_refs; /* percpt refcount for EQ */
145 typedef struct lnet_me {
146 struct list_head me_list;
147 lnet_libhandle_t me_lh;
148 lnet_process_id_t me_match_id;
149 unsigned int me_portal;
150 unsigned int me_pos; /* hash offset in mt_hash */
152 __u64 me_ignore_bits;
153 lnet_unlink_t me_unlink;
154 struct lnet_libmd *me_md;
157 typedef struct lnet_libmd {
158 struct list_head md_list;
159 lnet_libhandle_t md_lh;
162 unsigned int md_offset;
163 unsigned int md_length;
164 unsigned int md_max_size;
167 unsigned int md_options;
168 unsigned int md_flags;
169 unsigned int md_niov; /* # frags at end of struct */
173 struct kvec iov[LNET_MAX_IOV];
174 lnet_kiov_t kiov[LNET_MAX_IOV];
178 #define LNET_MD_FLAG_ZOMBIE (1 << 0)
179 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
180 #define LNET_MD_FLAG_ABORTED (1 << 2)
183 /* info about peers we are trying to fail */
184 struct list_head tp_list; /* ln_test_peers */
185 lnet_nid_t tp_nid; /* matching nid */
186 unsigned int tp_threshold; /* # failures to simulate */
189 #define LNET_COOKIE_TYPE_MD 1
190 #define LNET_COOKIE_TYPE_ME 2
191 #define LNET_COOKIE_TYPE_EQ 3
192 #define LNET_COOKIE_TYPE_BITS 2
193 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
195 struct lnet_ni; /* forward ref */
198 typedef struct lnet_lnd
200 /* fields managed by portals */
201 struct list_head lnd_list; /* stash in the LND table */
202 int lnd_refcount; /* # active instances */
204 /* fields initialized by the LND */
207 int (*lnd_startup)(struct lnet_ni *ni);
208 void (*lnd_shutdown)(struct lnet_ni *ni);
209 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
211 /* In data movement APIs below, payload buffers are described as a set
212 * of 'niov' fragments which are...
214 * in virtual memory (struct kvec *iov != NULL)
216 * in pages (kernel only: plt_kiov_t *kiov != NULL).
217 * The LND may NOT overwrite these fragment descriptors.
218 * An 'offset' and may specify a byte offset within the set of
219 * fragments to start from
222 /* Start sending a preformatted message. 'private' is NULL for PUT and
223 * GET messages; otherwise this is a response to an incoming message
224 * and 'private' is the 'private' passed to lnet_parse(). Return
225 * non-zero for immediate failure, otherwise complete later with
227 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
229 /* Start receiving 'mlen' bytes of payload data, skipping the following
230 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
231 * lnet_parse(). Return non-zero for immedaite failure, otherwise
232 * complete later with lnet_finalize(). This also gives back a receive
233 * credit if the LND does flow control. */
234 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
235 int delayed, unsigned int niov,
236 struct kvec *iov, lnet_kiov_t *kiov,
237 unsigned int offset, unsigned int mlen, unsigned int rlen);
239 /* lnet_parse() has had to delay processing of this message
240 * (e.g. waiting for a forwarding buffer or send credits). Give the
241 * LND a chance to free urgently needed resources. If called, return 0
242 * for success and do NOT give back a receive credit; that has to wait
243 * until lnd_recv() gets called. On failure return < 0 and
244 * release resources; lnd_recv() will not be called. */
245 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
246 void **new_privatep);
248 /* notification of peer health */
249 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
251 /* query of peer aliveness */
252 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
254 /* accept a new connection */
255 int (*lnd_accept)(struct lnet_ni *ni, struct socket *sock);
258 typedef struct lnet_ni_status {
262 } WIRE_ATTR lnet_ni_status_t;
264 struct lnet_tx_queue {
265 int tq_credits; /* # tx credits free */
266 int tq_credits_min; /* lowest it's been */
267 int tq_credits_max; /* total # tx credits */
268 struct list_head tq_delayed; /* delayed TXs */
271 enum lnet_net_state {
272 /* set when net block is allocated */
273 LNET_NET_STATE_INIT = 0,
274 /* set when NIs in net are started successfully */
275 LNET_NET_STATE_ACTIVE,
276 /* set if all NIs in net are in FAILED state */
277 LNET_NET_STATE_INACTIVE,
278 /* set when shutting down a NET */
279 LNET_NET_STATE_DELETING
283 /* set when NI block is allocated */
284 LNET_NI_STATE_INIT = 0,
285 /* set when NI is started successfully */
286 LNET_NI_STATE_ACTIVE,
287 /* set when LND notifies NI failed */
288 LNET_NI_STATE_FAILED,
289 /* set when LND notifies NI degraded */
290 LNET_NI_STATE_DEGRADED,
291 /* set when shuttding down NI */
292 LNET_NI_STATE_DELETING
296 /* chain on the ln_nets */
297 struct list_head net_list;
299 /* net ID, which is compoed of
300 * (net_type << 16) | net_num.
301 * net_type can be one of the enumarated types defined in
302 * lnet/include/lnet/nidstr.h */
305 /* priority of the network */
308 /* total number of CPTs in the array */
311 /* cumulative CPTs of all NIs in this net */
314 /* network tunables */
315 struct lnet_ioctl_config_lnd_cmn_tunables net_tunables;
318 * boolean to indicate that the tunables have been set and
321 bool net_tunables_set;
323 /* procedural interface */
326 /* list of NIs on this net */
327 struct list_head net_ni_list;
329 /* list of NIs being added, but not started yet */
330 struct list_head net_ni_added;
332 /* dying LND instances */
333 struct list_head net_ni_zombie;
336 enum lnet_net_state net_state;
339 typedef struct lnet_ni {
340 /* chain on the lnet_net structure */
341 struct list_head ni_netlist;
343 /* chain on net_ni_cpt */
344 struct list_head ni_cptlist;
351 /* bond NI on some CPTs */
354 /* interface's NID */
357 /* instance-specific data */
360 /* percpt TX queues */
361 struct lnet_tx_queue **ni_tx_queues;
363 /* percpt reference count */
366 /* when I was last alive */
369 /* pointer to parent network */
370 struct lnet_net *ni_net;
372 /* my health status */
373 lnet_ni_status_t *ni_status;
376 enum lnet_ni_state ni_state;
378 /* per NI LND tunables */
379 struct lnet_lnd_tunables ni_lnd_tunables;
381 /* lnd tunables set explicitly */
382 bool ni_lnd_tunables_set;
384 /* physical device CPT */
387 /* sequence number used to round robin over nis within a net */
391 * equivalent interfaces to use
392 * This is an array because socklnd bonding can still be configured
394 char *ni_interfaces[LNET_MAX_INTERFACES];
395 struct net *ni_net_ns; /* original net namespace */
398 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
400 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
401 * of old LNet, so there shouldn't be any compatibility issue */
402 #define LNET_PING_FEAT_INVAL (0) /* no feature */
403 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
404 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
405 #define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */
407 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
408 LNET_PING_FEAT_NI_STATUS)
410 typedef struct lnet_ping_info {
415 struct lnet_ni_status pi_ni[0];
416 } WIRE_ATTR lnet_ping_info_t;
418 /* router checker data, per router */
419 #define LNET_MAX_RTR_NIS 16
420 #define LNET_PINGINFO_SIZE offsetof(struct lnet_ping_info, pi_ni[LNET_MAX_RTR_NIS])
422 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
423 struct list_head rcd_list;
424 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
425 struct lnet_peer_ni *rcd_gateway; /* reference to gateway */
426 struct lnet_ping_info *rcd_pinginfo; /* ping buffer */
429 struct lnet_peer_ni {
430 /* cahian on peer_net */
431 struct list_head lpni_on_peer_net_list;
432 /* chain on remote peer list */
433 struct list_head lpni_on_remote_peer_ni_list;
434 /* chain on peer hash */
435 struct list_head lpni_hashlist;
436 /* messages blocking for tx credits */
437 struct list_head lpni_txq;
438 /* messages blocking for router credits */
439 struct list_head lpni_rtrq;
440 /* chain on router list */
441 struct list_head lpni_rtr_list;
442 /* pointer to peer net I'm part of */
443 struct lnet_peer_net *lpni_peer_net;
444 /* # tx credits available */
447 int lpni_mintxcredits;
448 /* # router credits */
451 int lpni_minrtrcredits;
453 unsigned int lpni_alive:1;
454 /* notification outstanding? */
455 unsigned int lpni_notify:1;
456 /* outstanding notification for LND? */
457 unsigned int lpni_notifylnd:1;
458 /* some thread is handling notification */
459 unsigned int lpni_notifying:1;
460 /* SEND event outstanding from ping */
461 unsigned int lpni_ping_notsent;
462 /* # times router went dead<->alive */
463 int lpni_alive_count;
464 /* bytes queued for sending */
466 /* time of last aliveness news */
467 cfs_time_t lpni_timestamp;
468 /* time of last ping attempt */
469 cfs_time_t lpni_ping_timestamp;
470 /* != 0 if ping reply expected */
471 cfs_time_t lpni_ping_deadline;
472 /* when I was last alive */
473 cfs_time_t lpni_last_alive;
474 /* when lpni_ni was queried last time */
475 cfs_time_t lpni_last_query;
476 /* network peer is on */
477 struct lnet_net *lpni_net;
481 atomic_t lpni_refcount;
482 /* CPT this peer attached on */
484 /* # refs from lnet_route_t::lr_gateway */
485 int lpni_rtr_refcount;
486 /* sequence number used to round robin over peer nis within a net */
490 /* returned RC ping features */
491 unsigned int lpni_ping_feats;
492 /* routes on this peer */
493 struct list_head lpni_routes;
494 /* array of preferred local nids */
495 lnet_nid_t *lpni_pref_nids;
496 /* number of preferred NIDs in lnpi_pref_nids */
497 __u32 lpni_pref_nnids;
498 /* router checker state */
499 lnet_rc_data_t *lpni_rcd;
503 /* chain on global peer list */
504 struct list_head lp_on_lnet_peer_list;
506 /* list of peer nets */
507 struct list_head lp_peer_nets;
509 /* primary NID of the peer */
510 lnet_nid_t lp_primary_nid;
512 /* peer is Multi-Rail enabled peer */
516 struct lnet_peer_net {
517 /* chain on peer block */
518 struct list_head lpn_on_peer_list;
520 /* list of peer_nis on this network */
521 struct list_head lpn_peer_nis;
523 /* pointer to the peer I'm part of */
524 struct lnet_peer *lpn_peer;
534 #define LNET_PEER_HASH_BITS 9
535 #define LNET_PEER_HASH_SIZE (1 << LNET_PEER_HASH_BITS)
537 /* peer hash table */
538 struct lnet_peer_table {
539 int pt_version; /* /proc validity stamp */
540 int pt_number; /* # peers extant */
541 int pt_zombies; /* # zombies to go to deathrow
542 * (and not there yet) */
543 struct list_head pt_deathrow; /* zombie peers */
544 struct list_head *pt_hash; /* NID->peer hash */
547 /* peer aliveness is enabled only on routers for peers in a network where the
548 * lnet_ni_t::ni_peertimeout has been set to a positive value */
549 #define lnet_peer_aliveness_enabled(lp) (the_lnet.ln_routing != 0 && \
550 (lp)->lpni_net->net_tunables.lct_peer_timeout > 0)
553 struct list_head lr_list; /* chain on net */
554 struct list_head lr_gwlist; /* chain on gateway */
555 struct lnet_peer_ni *lr_gateway; /* router node */
556 __u32 lr_net; /* remote network number */
557 int lr_seq; /* sequence for round-robin */
558 unsigned int lr_downis; /* number of down NIs */
559 __u32 lr_hops; /* how far I am */
560 unsigned int lr_priority; /* route priority */
563 #define LNET_REMOTE_NETS_HASH_DEFAULT (1U << 7)
564 #define LNET_REMOTE_NETS_HASH_MAX (1U << 16)
565 #define LNET_REMOTE_NETS_HASH_SIZE (1 << the_lnet.ln_remote_nets_hbits)
568 /* chain on ln_remote_nets_hash */
569 struct list_head lrn_list;
571 struct list_head lrn_routes;
576 /** lnet message has credit and can be submitted to lnd for send/receive */
577 #define LNET_CREDIT_OK 0
578 /** lnet message is waiting for credit */
579 #define LNET_CREDIT_WAIT 1
582 /* my free buffer pool */
583 struct list_head rbp_bufs;
584 /* messages blocking for a buffer */
585 struct list_head rbp_msgs;
586 /* # pages in each buffer */
588 /* requested number of buffers */
589 int rbp_req_nbuffers;
590 /* # buffers actually allocated */
592 /* # free buffers / blocked messages */
599 struct list_head rb_list; /* chain on rbp_bufs */
600 lnet_rtrbufpool_t *rb_pool; /* owning pool */
601 lnet_kiov_t rb_kiov[0]; /* the buffer space */
604 #define LNET_PEER_HASHSIZE 503 /* prime! */
607 /* Didn't match anything */
608 LNET_MATCHMD_NONE = (1 << 0),
610 LNET_MATCHMD_OK = (1 << 1),
611 /* Must be discarded */
612 LNET_MATCHMD_DROP = (1 << 2),
613 /* match and buffer is exhausted */
614 LNET_MATCHMD_EXHAUSTED = (1 << 3),
616 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
619 /* Options for lnet_portal_t::ptl_options */
620 #define LNET_PTL_LAZY (1 << 0)
621 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
622 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
624 /* parameter for matching operations (GET, PUT) */
625 struct lnet_match_info {
627 lnet_process_id_t mi_id;
630 unsigned int mi_portal;
631 unsigned int mi_rlength;
632 unsigned int mi_roffset;
635 /* ME hash of RDMA portal */
636 #define LNET_MT_HASH_BITS 8
637 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
638 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
639 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
640 * the last entry is reserved for MEs with ignore-bits */
641 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
642 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
643 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
644 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
645 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
646 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
647 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
649 /* portal match table */
650 struct lnet_match_table {
651 /* reserved for upcoming patches, CPU partition ID */
653 unsigned int mt_portal; /* portal index */
654 /* match table is set as "enabled" if there's non-exhausted MD
655 * attached on mt_mhash, it's only valid for wildcard portal */
656 unsigned int mt_enabled;
657 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
658 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
659 struct list_head *mt_mhash; /* matching hash */
662 /* these are only useful for wildcard portal */
663 /* Turn off message rotor for wildcard portals */
664 #define LNET_PTL_ROTOR_OFF 0
665 /* round-robin dispatch all PUT messages for wildcard portals */
666 #define LNET_PTL_ROTOR_ON 1
667 /* round-robin dispatch routed PUT message for wildcard portals */
668 #define LNET_PTL_ROTOR_RR_RT 2
669 /* dispatch routed PUT message by hashing source NID for wildcard portals */
670 #define LNET_PTL_ROTOR_HASH_RT 3
672 typedef struct lnet_portal {
674 unsigned int ptl_index; /* portal ID, reserved */
675 /* flags on this portal: lazy, unique... */
676 unsigned int ptl_options;
677 /* list of messages which are stealing buffer */
678 struct list_head ptl_msg_stealing;
679 /* messages blocking for MD */
680 struct list_head ptl_msg_delayed;
681 /* Match table for each CPT */
682 struct lnet_match_table **ptl_mtables;
683 /* spread rotor of incoming "PUT" */
684 unsigned int ptl_rotor;
685 /* # active entries for this portal */
687 /* array of active entries' cpu-partition-id */
691 #define LNET_LH_HASH_BITS 12
692 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
693 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
695 /* resource container (ME, MD, EQ) */
696 struct lnet_res_container {
697 unsigned int rec_type; /* container type */
698 __u64 rec_lh_cookie; /* cookie generator */
699 struct list_head rec_active; /* active resource list */
700 struct list_head *rec_lh_hash; /* handle hash */
703 /* message container */
704 struct lnet_msg_container {
705 int msc_init; /* initialized or not */
706 /* max # threads finalizing */
708 /* msgs waiting to complete finalizing */
709 struct list_head msc_finalizing;
710 struct list_head msc_active; /* active message list */
711 /* threads doing finalization */
712 void **msc_finalizers;
715 /* Router Checker states */
716 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
717 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
718 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
722 /* CPU partition table of LNet */
723 struct cfs_cpt_table *ln_cpt_table;
724 /* number of CPTs in ln_cpt_table */
725 unsigned int ln_cpt_number;
726 unsigned int ln_cpt_bits;
728 /* protect LNet resources (ME/MD/EQ) */
729 struct cfs_percpt_lock *ln_res_lock;
732 /* the vector of portals */
733 lnet_portal_t **ln_portals;
734 /* percpt ME containers */
735 struct lnet_res_container **ln_me_containers;
736 /* percpt MD container */
737 struct lnet_res_container **ln_md_containers;
739 /* Event Queue container */
740 struct lnet_res_container ln_eq_container;
741 wait_queue_head_t ln_eq_waitq;
742 spinlock_t ln_eq_wait_lock;
744 unsigned int ln_remote_nets_hbits;
746 /* protect NI, peer table, credits, routers, rtrbuf... */
747 struct cfs_percpt_lock *ln_net_lock;
748 /* percpt message containers for active/finalizing/freed message */
749 struct lnet_msg_container **ln_msg_containers;
750 lnet_counters_t **ln_counters;
751 struct lnet_peer_table **ln_peer_tables;
752 /* list of configured or discovered peers */
753 struct list_head ln_peers;
754 /* list of peer nis not on a local network */
755 struct list_head ln_remote_peer_ni_list;
756 /* failure simulation */
757 struct list_head ln_test_peers;
758 struct list_head ln_drop_rules;
759 struct list_head ln_delay_rules;
761 struct list_head ln_nets;
762 /* the loopback NI */
763 struct lnet_ni *ln_loni;
764 /* network zombie list */
765 struct list_head ln_net_zombie;
767 /* remote networks with routes to them */
768 struct list_head *ln_remote_nets_hash;
770 __u64 ln_remote_nets_version;
771 /* list of all known routers */
772 struct list_head ln_routers;
774 __u64 ln_routers_version;
775 /* percpt router buffer pools */
776 lnet_rtrbufpool_t **ln_rtrpools;
778 lnet_handle_md_t ln_ping_target_md;
779 lnet_handle_eq_t ln_ping_target_eq;
780 struct lnet_ping_info *ln_ping_info;
782 /* router checker startup/shutdown state */
784 /* router checker's event queue */
785 lnet_handle_eq_t ln_rc_eqh;
786 /* rcd still pending on net */
787 struct list_head ln_rcd_deathrow;
788 /* rcd ready for free */
789 struct list_head ln_rcd_zombie;
790 /* serialise startup/shutdown */
791 struct semaphore ln_rc_signal;
793 struct mutex ln_api_mutex;
794 struct mutex ln_lnd_mutex;
795 /* Have I called LNetNIInit myself? */
797 /* LNetNIInit/LNetNIFini counter */
799 /* shutdown in progress */
802 int ln_routing; /* am I a router? */
803 lnet_pid_t ln_pid; /* requested pid */
804 /* uniquely identifies this ni in this epoch */
805 __u64 ln_interface_cookie;
806 /* registered LNDs */
807 struct list_head ln_lnds;
809 /* test protocol compatibility flags */
810 int ln_testprotocompat;
812 /* 0 - load the NIs from the mod params
813 * 1 - do not load the NIs from the mod params
814 * Reverse logic to ensure that other calls to LNetNIInit
817 bool ln_nis_from_mod_params;
819 /* waitq for router checker. As long as there are no routes in
820 * the list, the router checker will sleep on this queue. when
821 * routes are added the thread will wake up */
822 wait_queue_head_t ln_rc_waitq;