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, 2014, 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__
46 # include <linux/uio.h>
47 # include <linux/types.h>
48 #else /* !__KERNEL__ */
49 # define LNET_USE_LIB_FREELIST
50 # include <sys/types.h>
51 #endif /* __KERNEL__ */
53 #include <libcfs/libcfs.h>
54 #include <libcfs/list.h>
55 #include <lnet/types.h>
56 #include <lnet/lnetctl.h>
58 #define WIRE_ATTR __attribute__((packed))
60 /* Packed version of lnet_process_id_t to transfer via network */
63 lnet_pid_t pid; /* node id / process id */
64 } WIRE_ATTR lnet_process_id_packed_t;
66 /* The wire handle's interface cookie only matches one network interface in
67 * one epoch (i.e. new cookie when the interface restarts or the node
68 * reboots). The object cookie only matches one object on that interface
69 * during that object's lifetime (i.e. no cookie re-use). */
71 __u64 wh_interface_cookie;
72 __u64 wh_object_cookie;
73 } WIRE_ATTR lnet_handle_wire_t;
83 /* The variant fields of the portals message header are aligned on an 8
84 * byte boundary in the message header. Note that all types used in these
85 * wire structs MUST be fixed size and the smaller types are placed at the
87 typedef struct lnet_ack {
88 lnet_handle_wire_t dst_wmd;
91 } WIRE_ATTR lnet_ack_t;
93 typedef struct lnet_put {
94 lnet_handle_wire_t ack_wmd;
99 } WIRE_ATTR lnet_put_t;
101 typedef struct lnet_get {
102 lnet_handle_wire_t return_wmd;
107 } WIRE_ATTR lnet_get_t;
109 typedef struct lnet_reply {
110 lnet_handle_wire_t dst_wmd;
111 } WIRE_ATTR lnet_reply_t;
113 typedef struct lnet_hello {
116 } WIRE_ATTR lnet_hello_t;
123 __u32 type; /* lnet_msg_type_t */
124 __u32 payload_length; /* payload data to follow */
125 /*<------__u64 aligned------->*/
133 } WIRE_ATTR lnet_hdr_t;
135 /* A HELLO message contains a magic number and protocol version
136 * code in the header's dest_nid, the peer's NID in the src_nid, and
137 * LNET_MSG_HELLO in the type field. All other common fields are zero
138 * (including payload_size; i.e. no payload).
139 * This is for use by byte-stream LNDs (e.g. TCP/IP) to check the peer is
140 * running the same protocol and to find out its NID. These LNDs should
141 * exchange HELLO messages when a connection is first established. Individual
142 * LNDs can put whatever else they fancy in lnet_hdr_t::msg.
145 __u32 magic; /* LNET_PROTO_TCP_MAGIC */
146 __u16 version_major; /* increment on incompatible change */
147 __u16 version_minor; /* increment on compatible change */
148 } WIRE_ATTR lnet_magicversion_t;
150 /* PROTO MAGIC for LNDs */
151 #define LNET_PROTO_IB_MAGIC 0x0be91b91
152 #define LNET_PROTO_RA_MAGIC 0x0be91b92
153 #define LNET_PROTO_QSW_MAGIC 0x0be91b93
154 #define LNET_PROTO_GNI_MAGIC 0xb00fbabe /* ask Kim */
155 #define LNET_PROTO_TCP_MAGIC 0xeebc0ded
156 #define LNET_PROTO_PTL_MAGIC 0x50746C4E /* 'PtlN' unique magic */
157 #define LNET_PROTO_MX_MAGIC 0x4d583130 /* 'MX10'! */
158 #define LNET_PROTO_ACCEPTOR_MAGIC 0xacce7100
159 #define LNET_PROTO_PING_MAGIC 0x70696E67 /* 'ping' */
161 /* Placeholder for a future "unified" protocol across all LNDs */
162 /* Current LNDs that receive a request with this magic will respond with a
163 * "stub" reply using their current protocol */
164 #define LNET_PROTO_MAGIC 0x45726963 /* ! */
167 #define LNET_PROTO_TCP_VERSION_MAJOR 1
168 #define LNET_PROTO_TCP_VERSION_MINOR 0
170 /* Acceptor connection request */
172 __u32 acr_magic; /* PTL_ACCEPTOR_PROTO_MAGIC */
173 __u32 acr_version; /* protocol version */
174 __u64 acr_nid; /* target NID */
175 } WIRE_ATTR lnet_acceptor_connreq_t;
177 #define LNET_PROTO_ACCEPTOR_VERSION 1
182 typedef struct lnet_msg {
183 struct list_head msg_activelist;
184 struct list_head msg_list; /* Q for credits/MD */
186 lnet_process_id_t msg_target;
187 /* where is it from, it's only for building event */
191 /* commited for sending */
192 unsigned int msg_tx_committed:1;
193 /* CPT # this message committed for sending */
194 unsigned int msg_tx_cpt:15;
195 /* commited for receiving */
196 unsigned int msg_rx_committed:1;
197 /* CPT # this message committed for receiving */
198 unsigned int msg_rx_cpt:15;
199 /* queued for tx credit */
200 unsigned int msg_tx_delayed:1;
201 /* queued for RX buffer */
202 unsigned int msg_rx_delayed:1;
203 /* ready for pending on RX delay list */
204 unsigned int msg_rx_ready_delay:1;
206 unsigned int msg_vmflush:1; /* VM trying to free memory */
207 unsigned int msg_target_is_router:1; /* sending to a router */
208 unsigned int msg_routing:1; /* being forwarded */
209 unsigned int msg_ack:1; /* ack on finalize (PUT) */
210 unsigned int msg_sending:1; /* outgoing message */
211 unsigned int msg_receiving:1; /* being received */
212 unsigned int msg_txcredit:1; /* taken an NI send credit */
213 unsigned int msg_peertxcredit:1; /* taken a peer send credit */
214 unsigned int msg_rtrcredit:1; /* taken a globel router credit */
215 unsigned int msg_peerrtrcredit:1; /* taken a peer router credit */
216 unsigned int msg_onactivelist:1; /* on the activelist */
217 unsigned int msg_rdma_get:1;
219 struct lnet_peer *msg_txpeer; /* peer I'm sending to */
220 struct lnet_peer *msg_rxpeer; /* peer I received from */
223 struct lnet_libmd *msg_md;
225 unsigned int msg_len;
226 unsigned int msg_wanted;
227 unsigned int msg_offset;
228 unsigned int msg_niov;
229 struct iovec *msg_iov;
230 lnet_kiov_t *msg_kiov;
237 typedef struct lnet_libhandle {
238 struct list_head lh_hash_chain;
242 #define lh_entry(ptr, type, member) \
243 ((type *)((char *)(ptr)-(char *)(&((type *)0)->member)))
245 typedef struct lnet_eq {
246 struct list_head eq_list;
247 lnet_libhandle_t eq_lh;
248 lnet_seq_t eq_enq_seq;
249 lnet_seq_t eq_deq_seq;
250 unsigned int eq_size;
251 lnet_eq_handler_t eq_callback;
252 lnet_event_t *eq_events;
253 int **eq_refs; /* percpt refcount for EQ */
256 typedef struct lnet_me {
257 struct list_head me_list;
258 lnet_libhandle_t me_lh;
259 lnet_process_id_t me_match_id;
260 unsigned int me_portal;
261 unsigned int me_pos; /* hash offset in mt_hash */
263 __u64 me_ignore_bits;
264 lnet_unlink_t me_unlink;
265 struct lnet_libmd *me_md;
268 typedef struct lnet_libmd {
269 struct list_head md_list;
270 lnet_libhandle_t md_lh;
273 unsigned int md_offset;
274 unsigned int md_length;
275 unsigned int md_max_size;
278 unsigned int md_options;
279 unsigned int md_flags;
282 unsigned int md_niov; /* # frags */
284 struct iovec iov[LNET_MAX_IOV];
285 lnet_kiov_t kiov[LNET_MAX_IOV];
289 #define LNET_MD_FLAG_ZOMBIE (1 << 0)
290 #define LNET_MD_FLAG_AUTO_UNLINK (1 << 1)
291 #define LNET_MD_FLAG_ABORTED (1 << 2)
293 #ifdef LNET_USE_LIB_FREELIST
296 /* single contiguous array of objects */
298 /* the number of them */
300 /* the size (including overhead) of each of them */
302 /* where they are enqueued */
303 struct list_head fl_list;
308 struct list_head fo_list; /* enqueue on fl_list */
309 void *fo_contents; /* aligned contents */
314 /* info about peers we are trying to fail */
315 struct list_head tp_list; /* ln_test_peers */
316 lnet_nid_t tp_nid; /* matching nid */
317 unsigned int tp_threshold; /* # failures to simulate */
320 #define LNET_COOKIE_TYPE_MD 1
321 #define LNET_COOKIE_TYPE_ME 2
322 #define LNET_COOKIE_TYPE_EQ 3
323 #define LNET_COOKIE_TYPE_BITS 2
324 #define LNET_COOKIE_MASK ((1ULL << LNET_COOKIE_TYPE_BITS) - 1ULL)
326 struct lnet_ni; /* forward ref */
328 typedef struct lnet_lnd
330 /* fields managed by portals */
331 struct list_head lnd_list; /* stash in the LND table */
332 int lnd_refcount; /* # active instances */
334 /* fields initialised by the LND */
335 unsigned int lnd_type;
337 int (*lnd_startup) (struct lnet_ni *ni);
338 void (*lnd_shutdown) (struct lnet_ni *ni);
339 int (*lnd_ctl)(struct lnet_ni *ni, unsigned int cmd, void *arg);
341 /* In data movement APIs below, payload buffers are described as a set
342 * of 'niov' fragments which are...
344 * in virtual memory (struct iovec *iov != NULL)
346 * in pages (kernel only: plt_kiov_t *kiov != NULL).
347 * The LND may NOT overwrite these fragment descriptors.
348 * An 'offset' and may specify a byte offset within the set of
349 * fragments to start from
352 /* Start sending a preformatted message. 'private' is NULL for PUT and
353 * GET messages; otherwise this is a response to an incoming message
354 * and 'private' is the 'private' passed to lnet_parse(). Return
355 * non-zero for immediate failure, otherwise complete later with
357 int (*lnd_send)(struct lnet_ni *ni, void *private, lnet_msg_t *msg);
359 /* Start receiving 'mlen' bytes of payload data, skipping the following
360 * 'rlen' - 'mlen' bytes. 'private' is the 'private' passed to
361 * lnet_parse(). Return non-zero for immedaite failure, otherwise
362 * complete later with lnet_finalize(). This also gives back a receive
363 * credit if the LND does flow control. */
364 int (*lnd_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
365 int delayed, unsigned int niov,
366 struct iovec *iov, lnet_kiov_t *kiov,
367 unsigned int offset, unsigned int mlen, unsigned int rlen);
369 /* lnet_parse() has had to delay processing of this message
370 * (e.g. waiting for a forwarding buffer or send credits). Give the
371 * LND a chance to free urgently needed resources. If called, return 0
372 * for success and do NOT give back a receive credit; that has to wait
373 * until lnd_recv() gets called. On failure return < 0 and
374 * release resources; lnd_recv() will not be called. */
375 int (*lnd_eager_recv)(struct lnet_ni *ni, void *private, lnet_msg_t *msg,
376 void **new_privatep);
378 /* notification of peer health */
379 void (*lnd_notify)(struct lnet_ni *ni, lnet_nid_t peer, int alive);
381 /* query of peer aliveness */
382 void (*lnd_query)(struct lnet_ni *ni, lnet_nid_t peer, cfs_time_t *when);
384 #if defined(__KERNEL__) || defined(HAVE_LIBPTHREAD)
385 /* accept a new connection */
386 int (*lnd_accept)(struct lnet_ni *ni, cfs_socket_t *sock);
390 /* wait for something to happen */
391 void (*lnd_wait)(struct lnet_ni *ni, int milliseconds);
393 /* ensure non-RDMA messages can be received outside liblustre */
394 int (*lnd_setasync)(struct lnet_ni *ni, lnet_process_id_t id, int nasync);
398 #define LNET_NI_STATUS_UP 0x15aac0de
399 #define LNET_NI_STATUS_DOWN 0xdeadface
400 #define LNET_NI_STATUS_INVALID 0x00000000
405 } WIRE_ATTR lnet_ni_status_t;
407 struct lnet_tx_queue {
408 int tq_credits; /* # tx credits free */
409 int tq_credits_min; /* lowest it's been */
410 int tq_credits_max; /* total # tx credits */
411 struct list_head tq_delayed; /* delayed TXs */
414 #define LNET_MAX_INTERFACES 16
416 typedef struct lnet_ni {
420 # ifndef HAVE_LIBPTHREAD
423 pthread_mutex_t ni_lock;
426 struct list_head ni_list; /* chain on ln_nis */
427 struct list_head ni_cptlist; /* chain on ln_nis_cpt */
428 int ni_maxtxcredits; /* # tx credits */
429 /* # per-peer send credits */
430 int ni_peertxcredits;
431 /* # per-peer router buffer credits */
432 int ni_peerrtrcredits;
433 /* seconds to consider peer dead */
435 int ni_ncpts; /* number of CPTs */
436 __u32 *ni_cpts; /* bond NI on some CPTs */
437 lnet_nid_t ni_nid; /* interface's NID */
438 void *ni_data; /* instance-specific data */
439 lnd_t *ni_lnd; /* procedural interface */
440 struct lnet_tx_queue **ni_tx_queues; /* percpt TX queues */
441 int **ni_refs; /* percpt reference count */
442 long ni_last_alive; /* when I was last alive */
443 lnet_ni_status_t *ni_status; /* my health status */
444 /* equivalent interfaces to use */
445 char *ni_interfaces[LNET_MAX_INTERFACES];
448 #define LNET_PROTO_PING_MATCHBITS 0x8000000000000000LL
450 /* NB: value of these features equal to LNET_PROTO_PING_VERSION_x
451 * of old LNet, so there shouldn't be any compatibility issue */
452 #define LNET_PING_FEAT_INVAL (0) /* no feature */
453 #define LNET_PING_FEAT_BASE (1 << 0) /* just a ping */
454 #define LNET_PING_FEAT_NI_STATUS (1 << 1) /* return NI status */
455 #define LNET_PING_FEAT_RTE_DISABLED (1 << 2) /* Routing enabled */
457 #define LNET_PING_FEAT_MASK (LNET_PING_FEAT_BASE | \
458 LNET_PING_FEAT_NI_STATUS)
465 lnet_ni_status_t pi_ni[0];
466 } WIRE_ATTR lnet_ping_info_t;
468 /* router checker data, per router */
469 #define LNET_MAX_RTR_NIS 16
470 #define LNET_PINGINFO_SIZE offsetof(lnet_ping_info_t, pi_ni[LNET_MAX_RTR_NIS])
472 /* chain on the_lnet.ln_zombie_rcd or ln_deathrow_rcd */
473 struct list_head rcd_list;
474 lnet_handle_md_t rcd_mdh; /* ping buffer MD */
475 struct lnet_peer *rcd_gateway; /* reference to gateway */
476 lnet_ping_info_t *rcd_pinginfo; /* ping buffer */
479 typedef struct lnet_peer {
480 /* chain on peer hash */
481 struct list_head lp_hashlist;
482 /* messages blocking for tx credits */
483 struct list_head lp_txq;
484 /* messages blocking for router credits */
485 struct list_head lp_rtrq;
486 /* chain on router list */
487 struct list_head lp_rtr_list;
488 /* # tx credits available */
492 /* # router credits */
495 int lp_minrtrcredits;
497 unsigned int lp_alive:1;
498 /* notification outstanding? */
499 unsigned int lp_notify:1;
500 /* outstanding notification for LND? */
501 unsigned int lp_notifylnd:1;
502 /* some thread is handling notification */
503 unsigned int lp_notifying:1;
504 /* SEND event outstanding from ping */
505 unsigned int lp_ping_notsent;
506 /* # times router went dead<->alive */
508 /* bytes queued for sending */
510 /* time of last aliveness news */
511 cfs_time_t lp_timestamp;
512 /* time of last ping attempt */
513 cfs_time_t lp_ping_timestamp;
514 /* != 0 if ping reply expected */
515 cfs_time_t lp_ping_deadline;
516 /* when I was last alive */
517 cfs_time_t lp_last_alive;
518 /* when lp_ni was queried last time */
519 cfs_time_t lp_last_query;
520 /* interface peer is on */
522 lnet_nid_t lp_nid; /* peer's NID */
523 int lp_refcount; /* # refs */
524 int lp_cpt; /* CPT this peer attached on */
525 /* # refs from lnet_route_t::lr_gateway */
527 /* returned RC ping features */
528 unsigned int lp_ping_feats;
529 struct list_head lp_routes; /* routers on this peer */
530 lnet_rc_data_t *lp_rcd; /* router checker state */
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)->lp_ni->ni_peertimeout > 0)
553 struct list_head lr_list; /* chain on net */
554 struct list_head lr_gwlist; /* chain on gateway */
555 lnet_peer_t *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 unsigned int 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 */
590 /* # free buffers / blocked messages */
597 struct list_head rb_list; /* chain on rbp_bufs */
598 lnet_rtrbufpool_t *rb_pool; /* owning pool */
599 lnet_kiov_t rb_kiov[0]; /* the buffer space */
602 typedef struct lnet_counters {
614 } WIRE_ATTR lnet_counters_t;
616 #define LNET_PEER_HASHSIZE 503 /* prime! */
618 #define LNET_TINY_BUF_IDX 0
619 #define LNET_SMALL_BUF_IDX 1
620 #define LNET_LARGE_BUF_IDX 2
622 /* # different router buffer pools */
623 #define LNET_NRBPOOLS (LNET_LARGE_BUF_IDX + 1)
626 /* Didn't match anything */
627 LNET_MATCHMD_NONE = (1 << 0),
629 LNET_MATCHMD_OK = (1 << 1),
630 /* Must be discarded */
631 LNET_MATCHMD_DROP = (1 << 2),
632 /* match and buffer is exhausted */
633 LNET_MATCHMD_EXHAUSTED = (1 << 3),
635 LNET_MATCHMD_FINISH = (LNET_MATCHMD_OK | LNET_MATCHMD_DROP),
638 /* Options for lnet_portal_t::ptl_options */
639 #define LNET_PTL_LAZY (1 << 0)
640 #define LNET_PTL_MATCH_UNIQUE (1 << 1) /* unique match, for RDMA */
641 #define LNET_PTL_MATCH_WILDCARD (1 << 2) /* wildcard match, request portal */
643 /* parameter for matching operations (GET, PUT) */
644 struct lnet_match_info {
646 lnet_process_id_t mi_id;
648 unsigned int mi_portal;
649 unsigned int mi_rlength;
650 unsigned int mi_roffset;
653 /* ME hash of RDMA portal */
654 #define LNET_MT_HASH_BITS 8
655 #define LNET_MT_HASH_SIZE (1 << LNET_MT_HASH_BITS)
656 #define LNET_MT_HASH_MASK (LNET_MT_HASH_SIZE - 1)
657 /* we allocate (LNET_MT_HASH_SIZE + 1) entries for lnet_match_table::mt_hash,
658 * the last entry is reserved for MEs with ignore-bits */
659 #define LNET_MT_HASH_IGNORE LNET_MT_HASH_SIZE
660 /* __u64 has 2^6 bits, so need 2^(LNET_MT_HASH_BITS - LNET_MT_BITS_U64) which
661 * is 4 __u64s as bit-map, and add an extra __u64 (only use one bit) for the
662 * ME-list with ignore-bits, which is mtable::mt_hash[LNET_MT_HASH_IGNORE] */
663 #define LNET_MT_BITS_U64 6 /* 2^6 bits */
664 #define LNET_MT_EXHAUSTED_BITS (LNET_MT_HASH_BITS - LNET_MT_BITS_U64)
665 #define LNET_MT_EXHAUSTED_BMAP ((1 << LNET_MT_EXHAUSTED_BITS) + 1)
667 /* portal match table */
668 struct lnet_match_table {
669 /* reserved for upcoming patches, CPU partition ID */
671 unsigned int mt_portal; /* portal index */
672 /* match table is set as "enabled" if there's non-exhausted MD
673 * attached on mt_mhash, it's only valide for wildcard portal */
674 unsigned int mt_enabled;
675 /* bitmap to flag whether MEs on mt_hash are exhausted or not */
676 __u64 mt_exhausted[LNET_MT_EXHAUSTED_BMAP];
677 struct list_head *mt_mhash; /* matching hash */
680 /* these are only useful for wildcard portal */
681 /* Turn off message rotor for wildcard portals */
682 #define LNET_PTL_ROTOR_OFF 0
683 /* round-robin dispatch all PUT messages for wildcard portals */
684 #define LNET_PTL_ROTOR_ON 1
685 /* round-robin dispatch routed PUT message for wildcard portals */
686 #define LNET_PTL_ROTOR_RR_RT 2
687 /* dispatch routed PUT message by hashing source NID for wildcard portals */
688 #define LNET_PTL_ROTOR_HASH_RT 3
690 typedef struct lnet_portal {
694 # ifndef HAVE_LIBPTHREAD
697 pthread_mutex_t ptl_lock;
700 unsigned int ptl_index; /* portal ID, reserved */
701 /* flags on this portal: lazy, unique... */
702 unsigned int ptl_options;
703 /* list of messags which are stealing buffer */
704 struct list_head ptl_msg_stealing;
705 /* messages blocking for MD */
706 struct list_head ptl_msg_delayed;
707 /* Match table for each CPT */
708 struct lnet_match_table **ptl_mtables;
709 /* spread rotor of incoming "PUT" */
710 unsigned int ptl_rotor;
711 /* # active entries for this portal */
713 /* array of active entries' cpu-partition-id */
717 #define LNET_LH_HASH_BITS 12
718 #define LNET_LH_HASH_SIZE (1ULL << LNET_LH_HASH_BITS)
719 #define LNET_LH_HASH_MASK (LNET_LH_HASH_SIZE - 1)
721 /* resource container (ME, MD, EQ) */
722 struct lnet_res_container {
723 unsigned int rec_type; /* container type */
724 __u64 rec_lh_cookie; /* cookie generator */
725 struct list_head rec_active; /* active resource list */
726 struct list_head *rec_lh_hash; /* handle hash */
727 #ifdef LNET_USE_LIB_FREELIST
728 lnet_freelist_t rec_freelist; /* freelist for resources */
732 /* message container */
733 struct lnet_msg_container {
734 int msc_init; /* initialized or not */
735 /* max # threads finalizing */
737 /* msgs waiting to complete finalizing */
738 struct list_head msc_finalizing;
739 struct list_head msc_active; /* active message list */
740 /* threads doing finalization */
741 void **msc_finalizers;
742 #ifdef LNET_USE_LIB_FREELIST
743 lnet_freelist_t msc_freelist; /* freelist for messages */
747 /* Router Checker states */
748 #define LNET_RC_STATE_SHUTDOWN 0 /* not started */
749 #define LNET_RC_STATE_RUNNING 1 /* started up OK */
750 #define LNET_RC_STATE_STOPPING 2 /* telling thread to stop */
754 /* CPU partition table of LNet */
755 struct cfs_cpt_table *ln_cpt_table;
756 /* number of CPTs in ln_cpt_table */
757 unsigned int ln_cpt_number;
758 unsigned int ln_cpt_bits;
760 /* protect LNet resources (ME/MD/EQ) */
761 struct cfs_percpt_lock *ln_res_lock;
764 /* the vector of portals */
765 lnet_portal_t **ln_portals;
766 /* percpt ME containers */
767 struct lnet_res_container **ln_me_containers;
768 /* percpt MD container */
769 struct lnet_res_container **ln_md_containers;
771 /* Event Queue container */
772 struct lnet_res_container ln_eq_container;
774 wait_queue_head_t ln_eq_waitq;
775 spinlock_t ln_eq_wait_lock;
777 # ifndef HAVE_LIBPTHREAD
780 pthread_cond_t ln_eq_cond;
781 pthread_mutex_t ln_eq_wait_lock;
784 unsigned int ln_remote_nets_hbits;
786 /* protect NI, peer table, credits, routers, rtrbuf... */
787 struct cfs_percpt_lock *ln_net_lock;
788 /* percpt message containers for active/finalizing/freed message */
789 struct lnet_msg_container **ln_msg_containers;
790 lnet_counters_t **ln_counters;
791 struct lnet_peer_table **ln_peer_tables;
792 /* failure simulation */
793 struct list_head ln_test_peers;
794 struct list_head ln_drop_rules;
795 struct list_head ln_delay_rules;
797 struct list_head ln_nis; /* LND instances */
798 /* NIs bond on specific CPT(s) */
799 struct list_head ln_nis_cpt;
800 /* dying LND instances */
801 struct list_head ln_nis_zombie;
802 lnet_ni_t *ln_loni; /* the loopback NI */
803 /* NI to wait for events in */
804 lnet_ni_t *ln_eq_waitni;
806 /* remote networks with routes to them */
807 struct list_head *ln_remote_nets_hash;
809 __u64 ln_remote_nets_version;
810 /* list of all known routers */
811 struct list_head ln_routers;
813 __u64 ln_routers_version;
814 /* percpt router buffer pools */
815 lnet_rtrbufpool_t **ln_rtrpools;
817 lnet_handle_md_t ln_ping_target_md;
818 lnet_handle_eq_t ln_ping_target_eq;
819 lnet_ping_info_t *ln_ping_info;
821 /* router checker startup/shutdown state */
823 /* router checker's event queue */
824 lnet_handle_eq_t ln_rc_eqh;
825 /* rcd still pending on net */
826 struct list_head ln_rcd_deathrow;
827 /* rcd ready for free */
828 struct list_head ln_rcd_zombie;
830 /* serialise startup/shutdown */
831 struct semaphore ln_rc_signal;
833 struct mutex ln_api_mutex;
834 struct mutex ln_lnd_mutex;
835 struct mutex ln_delay_mutex;
837 # ifndef HAVE_LIBPTHREAD
841 pthread_mutex_t ln_api_mutex;
842 pthread_mutex_t ln_lnd_mutex;
845 int ln_init; /* LNetInit() called? */
846 /* Have I called LNetNIInit myself? */
848 /* LNetNIInit/LNetNIFini counter */
850 /* shutdown in progress */
853 int ln_routing; /* am I a router? */
854 lnet_pid_t ln_pid; /* requested pid */
855 /* uniquely identifies this ni in this epoch */
856 __u64 ln_interface_cookie;
857 /* registered LNDs */
858 struct list_head ln_lnds;
860 /* test protocol compatibility flags */
861 int ln_testprotocompat;
863 /* 0 - load the NIs from the mod params
864 * 1 - do not load the NIs from the mod params
865 * Reverse logic to ensure that other calls to LNetNIInit
868 bool ln_nis_from_mod_params;
871 /* Temporary workaround to allow uOSS and test programs force
872 * server mode in userspace. The only place where we use it is
873 * lnet_prepare(). The only way to turn this flag on is to
874 * call lnet_server_mode() */
875 int ln_server_mode_flag;