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-lnet.h
38 * Top level include for library side routines
41 #ifndef __LNET_LIB_LNET_H__
42 #define __LNET_LIB_LNET_H__
44 #if defined(__linux__)
45 #include <lnet/linux/lib-lnet.h>
46 #elif defined(__APPLE__)
47 #include <lnet/darwin/lib-lnet.h>
49 #error Unsupported Operating System
52 #include <libcfs/libcfs.h>
53 #include <lnet/types.h>
54 #include <lnet/lnet.h>
55 #include <lnet/lib-types.h>
57 extern lnet_t the_lnet; /* THE network */
59 #if !defined(__KERNEL__) || defined(LNET_USE_LIB_FREELIST)
60 /* 1 CPT, simplify implementation... */
61 # define LNET_CPT_MAX_BITS 0
63 #else /* KERNEL and no freelist */
65 # if (BITS_PER_LONG == 32)
66 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
67 # define LNET_CPT_MAX_BITS 1
69 # else /* 64-bit system */
71 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
72 * under risk of consuming all lh_cookie.
74 # define LNET_CPT_MAX_BITS 8
75 # endif /* BITS_PER_LONG == 32 */
78 /* max allowed CPT number */
79 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
81 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
82 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
83 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
86 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
88 static inline int lnet_is_route_alive(lnet_route_t *route)
90 if (!route->lr_gateway->lp_alive)
91 return 0; /* gateway is down */
92 if ((route->lr_gateway->lp_ping_feats &
93 LNET_PING_FEAT_NI_STATUS) == 0)
94 return 1; /* no NI status, assume it's alive */
95 /* has NI status, check # down NIs */
96 return route->lr_downis == 0;
99 static inline int lnet_is_wire_handle_none (lnet_handle_wire_t *wh)
101 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
102 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
105 static inline int lnet_md_exhausted (lnet_libmd_t *md)
107 return (md->md_threshold == 0 ||
108 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
109 md->md_offset + md->md_max_size > md->md_length));
112 static inline int lnet_md_unlinkable (lnet_libmd_t *md)
114 /* Should unlink md when its refcount is 0 and either:
115 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
116 * in the latter case md may not be exhausted).
117 * - auto unlink is on and md is exhausted.
119 if (md->md_refcount != 0)
122 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
125 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
126 lnet_md_exhausted(md));
129 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
130 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
133 lnet_cpt_of_cookie(__u64 cookie)
135 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
137 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
138 * get illegal cpt from it's invalid cookie */
139 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
143 lnet_res_lock(int cpt)
145 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
149 lnet_res_unlock(int cpt)
151 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
155 lnet_res_lock_current(void)
157 int cpt = lnet_cpt_current();
164 lnet_net_lock(int cpt)
166 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
170 lnet_net_unlock(int cpt)
172 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
176 lnet_net_lock_current(void)
178 int cpt = lnet_cpt_current();
184 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
185 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
189 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
190 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
191 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
192 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
193 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
194 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
195 #define LNET_MUTEX_LOCK(m) mutex_lock(m)
196 #define LNET_MUTEX_UNLOCK(m) mutex_unlock(m)
198 #else /* !__KERNEL__ */
200 # ifndef HAVE_LIBPTHREAD
201 #define LNET_SINGLE_THREADED_LOCK(l) \
203 LASSERT ((l) == 0); \
207 #define LNET_SINGLE_THREADED_UNLOCK(l) \
209 LASSERT ((l) == 1); \
213 #define LNET_MUTEX_LOCK(m) LNET_SINGLE_THREADED_LOCK(*(m))
214 #define LNET_MUTEX_UNLOCK(m) LNET_SINGLE_THREADED_UNLOCK(*(m))
216 #define lnet_ptl_lock(ptl) \
217 LNET_SINGLE_THREADED_LOCK((ptl)->ptl_lock)
218 #define lnet_ptl_unlock(ptl) \
219 LNET_SINGLE_THREADED_UNLOCK((ptl)->ptl_lock)
221 #define lnet_eq_wait_lock() \
222 LNET_SINGLE_THREADED_LOCK(the_lnet.ln_eq_wait_lock)
223 #define lnet_eq_wait_unlock() \
224 LNET_SINGLE_THREADED_UNLOCK(the_lnet.ln_eq_wait_lock)
226 #define lnet_ni_lock(ni) \
227 LNET_SINGLE_THREADED_LOCK((ni)->ni_lock)
228 #define lnet_ni_unlock(ni) \
229 LNET_SINGLE_THREADED_UNLOCK((ni)->ni_lock)
231 # else /* HAVE_LIBPTHREAD */
233 #define LNET_MUTEX_LOCK(m) pthread_mutex_lock(m)
234 #define LNET_MUTEX_UNLOCK(m) pthread_mutex_unlock(m)
236 #define lnet_ptl_lock(ptl) pthread_mutex_lock(&(ptl)->ptl_lock)
237 #define lnet_ptl_unlock(ptl) pthread_mutex_unlock(&(ptl)->ptl_lock)
239 #define lnet_eq_wait_lock() pthread_mutex_lock(&the_lnet.ln_eq_wait_lock)
240 #define lnet_eq_wait_unlock() pthread_mutex_unlock(&the_lnet.ln_eq_wait_lock)
242 #define lnet_ni_lock(ni) pthread_mutex_lock(&(ni)->ni_lock)
243 #define lnet_ni_unlock(ni) pthread_mutex_unlock(&(ni)->ni_lock)
245 # endif /* HAVE_LIBPTHREAD */
246 #endif /* __KERNEL__ */
248 #define MAX_PORTALS 64
250 /* these are only used by code with LNET_USE_LIB_FREELIST, but we still
251 * exported them to !LNET_USE_LIB_FREELIST for easy implemetation */
252 #define LNET_FL_MAX_MES 2048
253 #define LNET_FL_MAX_MDS 2048
254 #define LNET_FL_MAX_EQS 512
255 #define LNET_FL_MAX_MSGS 2048 /* Outstanding messages */
257 #ifdef LNET_USE_LIB_FREELIST
259 int lnet_freelist_init(lnet_freelist_t *fl, int n, int size);
260 void lnet_freelist_fini(lnet_freelist_t *fl);
263 lnet_freelist_alloc (lnet_freelist_t *fl)
265 /* ALWAYS called with liblock held */
268 if (list_empty(&fl->fl_list))
271 o = list_entry(fl->fl_list.next, lnet_freeobj_t, fo_list);
272 list_del(&o->fo_list);
273 return (void *)&o->fo_contents;
277 lnet_freelist_free (lnet_freelist_t *fl, void *obj)
279 /* ALWAYS called with liblock held */
280 lnet_freeobj_t *o = list_entry(obj, lnet_freeobj_t, fo_contents);
282 list_add(&o->fo_list, &fl->fl_list);
286 static inline lnet_eq_t *
289 /* NEVER called with resource lock held */
290 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
293 LASSERT(LNET_CPT_NUMBER == 1);
296 eq = (lnet_eq_t *)lnet_freelist_alloc(&rec->rec_freelist);
303 lnet_eq_free_locked(lnet_eq_t *eq)
305 /* ALWAYS called with resource lock held */
306 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
308 LASSERT(LNET_CPT_NUMBER == 1);
309 lnet_freelist_free(&rec->rec_freelist, eq);
313 lnet_eq_free(lnet_eq_t *eq)
316 lnet_eq_free_locked(eq);
320 static inline lnet_libmd_t *
321 lnet_md_alloc (lnet_md_t *umd)
323 /* NEVER called with resource lock held */
324 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
327 LASSERT(LNET_CPT_NUMBER == 1);
330 md = (lnet_libmd_t *)lnet_freelist_alloc(&rec->rec_freelist);
334 INIT_LIST_HEAD(&md->md_list);
340 lnet_md_free_locked(lnet_libmd_t *md)
342 /* ALWAYS called with resource lock held */
343 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
345 LASSERT(LNET_CPT_NUMBER == 1);
346 lnet_freelist_free(&rec->rec_freelist, md);
350 lnet_md_free(lnet_libmd_t *md)
353 lnet_md_free_locked(md);
357 static inline lnet_me_t *
360 /* NEVER called with resource lock held */
361 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
364 LASSERT(LNET_CPT_NUMBER == 1);
367 me = (lnet_me_t *)lnet_freelist_alloc(&rec->rec_freelist);
374 lnet_me_free_locked(lnet_me_t *me)
376 /* ALWAYS called with resource lock held */
377 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
379 LASSERT(LNET_CPT_NUMBER == 1);
380 lnet_freelist_free(&rec->rec_freelist, me);
384 lnet_me_free(lnet_me_t *me)
387 lnet_me_free_locked(me);
391 static inline lnet_msg_t *
392 lnet_msg_alloc (void)
394 /* NEVER called with network lock held */
395 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
398 LASSERT(LNET_CPT_NUMBER == 1);
401 msg = (lnet_msg_t *)lnet_freelist_alloc(&msc->msc_freelist);
405 /* NULL pointers, clear flags etc */
406 memset(msg, 0, sizeof(*msg));
412 lnet_msg_free_locked(lnet_msg_t *msg)
414 /* ALWAYS called with network lock held */
415 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
417 LASSERT(LNET_CPT_NUMBER == 1);
418 LASSERT(!msg->msg_onactivelist);
419 lnet_freelist_free(&msc->msc_freelist, msg);
423 lnet_msg_free (lnet_msg_t *msg)
426 lnet_msg_free_locked(msg);
430 #else /* !LNET_USE_LIB_FREELIST */
432 static inline lnet_eq_t *
435 /* NEVER called with liblock held */
438 LIBCFS_ALLOC(eq, sizeof(*eq));
443 lnet_eq_free(lnet_eq_t *eq)
445 /* ALWAYS called with resource lock held */
446 LIBCFS_FREE(eq, sizeof(*eq));
449 static inline lnet_libmd_t *
450 lnet_md_alloc (lnet_md_t *umd)
452 /* NEVER called with liblock held */
457 if ((umd->options & LNET_MD_KIOV) != 0) {
459 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
461 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
463 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
466 LIBCFS_ALLOC(md, size);
469 /* Set here in case of early free */
470 md->md_options = umd->options;
472 INIT_LIST_HEAD(&md->md_list);
479 lnet_md_free(lnet_libmd_t *md)
481 /* ALWAYS called with resource lock held */
484 if ((md->md_options & LNET_MD_KIOV) != 0)
485 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
487 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
489 LIBCFS_FREE(md, size);
492 static inline lnet_me_t *
495 /* NEVER called with liblock held */
498 LIBCFS_ALLOC(me, sizeof(*me));
503 lnet_me_free(lnet_me_t *me)
505 /* ALWAYS called with resource lock held */
506 LIBCFS_FREE(me, sizeof(*me));
509 static inline lnet_msg_t *
512 /* NEVER called with liblock held */
515 LIBCFS_ALLOC(msg, sizeof(*msg));
517 /* no need to zero, LIBCFS_ALLOC does for us */
522 lnet_msg_free(lnet_msg_t *msg)
524 /* ALWAYS called with network lock held */
525 LASSERT(!msg->msg_onactivelist);
526 LIBCFS_FREE(msg, sizeof(*msg));
529 #define lnet_eq_free_locked(eq) lnet_eq_free(eq)
530 #define lnet_md_free_locked(md) lnet_md_free(md)
531 #define lnet_me_free_locked(me) lnet_me_free(me)
532 #define lnet_msg_free_locked(msg) lnet_msg_free(msg)
534 #endif /* LNET_USE_LIB_FREELIST */
536 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
538 void lnet_res_lh_initialize(struct lnet_res_container *rec,
539 lnet_libhandle_t *lh);
541 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
543 /* ALWAYS called with resource lock held */
544 /* NB: cookie is still useful, don't reset it */
545 list_del(&lh->lh_hash_chain);
549 lnet_eq2handle (lnet_handle_eq_t *handle, lnet_eq_t *eq)
552 LNetInvalidateHandle(handle);
556 handle->cookie = eq->eq_lh.lh_cookie;
559 static inline lnet_eq_t *
560 lnet_handle2eq(lnet_handle_eq_t *handle)
562 /* ALWAYS called with resource lock held */
563 lnet_libhandle_t *lh;
565 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
569 return lh_entry(lh, lnet_eq_t, eq_lh);
573 lnet_md2handle (lnet_handle_md_t *handle, lnet_libmd_t *md)
575 handle->cookie = md->md_lh.lh_cookie;
578 static inline lnet_libmd_t *
579 lnet_handle2md(lnet_handle_md_t *handle)
581 /* ALWAYS called with resource lock held */
582 lnet_libhandle_t *lh;
585 cpt = lnet_cpt_of_cookie(handle->cookie);
586 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
591 return lh_entry(lh, lnet_libmd_t, md_lh);
594 static inline lnet_libmd_t *
595 lnet_wire_handle2md(lnet_handle_wire_t *wh)
597 /* ALWAYS called with resource lock held */
598 lnet_libhandle_t *lh;
601 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
604 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
605 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
606 wh->wh_object_cookie);
610 return lh_entry(lh, lnet_libmd_t, md_lh);
614 lnet_me2handle (lnet_handle_me_t *handle, lnet_me_t *me)
616 handle->cookie = me->me_lh.lh_cookie;
619 static inline lnet_me_t *
620 lnet_handle2me(lnet_handle_me_t *handle)
622 /* ALWAYS called with resource lock held */
623 lnet_libhandle_t *lh;
626 cpt = lnet_cpt_of_cookie(handle->cookie);
627 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
632 return lh_entry(lh, lnet_me_t, me_lh);
636 lnet_peer_addref_locked(lnet_peer_t *lp)
638 LASSERT (lp->lp_refcount > 0);
642 extern void lnet_destroy_peer_locked(lnet_peer_t *lp);
645 lnet_peer_decref_locked(lnet_peer_t *lp)
647 LASSERT (lp->lp_refcount > 0);
649 if (lp->lp_refcount == 0)
650 lnet_destroy_peer_locked(lp);
654 lnet_isrouter(lnet_peer_t *lp)
656 return lp->lp_rtr_refcount != 0;
660 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
662 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
663 LASSERT(*ni->ni_refs[cpt] >= 0);
665 (*ni->ni_refs[cpt])++;
669 lnet_ni_addref(lnet_ni_t *ni)
672 lnet_ni_addref_locked(ni, 0);
677 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
679 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
680 LASSERT(*ni->ni_refs[cpt] > 0);
682 (*ni->ni_refs[cpt])--;
686 lnet_ni_decref(lnet_ni_t *ni)
689 lnet_ni_decref_locked(ni, 0);
693 void lnet_ni_free(lnet_ni_t *ni);
696 lnet_nid2peerhash(lnet_nid_t nid)
698 return hash_long(nid, LNET_PEER_HASH_BITS);
701 static inline struct list_head *
702 lnet_net2rnethash(__u32 net)
704 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
706 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
709 extern lnd_t the_lolnd;
712 /* unconditional registration */
713 #define LNET_REGISTER_ULND(lnd) \
717 lnet_register_lnd(&(lnd)); \
720 /* conditional registration */
721 #define LNET_REGISTER_ULND_IF_PRESENT(lnd) \
723 extern lnd_t lnd __attribute__ ((weak, alias("the_lolnd"))); \
725 if (&(lnd) != &the_lolnd) \
726 lnet_register_lnd(&(lnd)); \
730 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid);
731 extern int lnet_cpt_of_nid(lnet_nid_t nid);
732 extern lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
733 extern lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
734 extern lnet_ni_t *lnet_net2ni(__u32 net);
736 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, cfs_time_t when);
737 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when);
738 int lnet_add_route(__u32 net, unsigned int hops, lnet_nid_t gateway_nid,
739 unsigned int priority);
740 int lnet_check_routes(void);
741 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
742 void lnet_destroy_routes(void);
743 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
744 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
745 void lnet_proc_init(void);
746 void lnet_proc_fini(void);
747 int lnet_rtrpools_alloc(int im_a_router);
748 void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages);
749 int lnet_rtrpools_adjust(int tiny, int small, int large);
750 int lnet_rtrpools_enable(void);
751 void lnet_rtrpools_disable(void);
752 void lnet_rtrpools_free(int keep_pools);
753 lnet_remotenet_t *lnet_find_net_locked (__u32 net);
755 int lnet_islocalnid(lnet_nid_t nid);
756 int lnet_islocalnet(__u32 net);
758 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
759 unsigned int offset, unsigned int mlen);
760 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
761 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
762 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
763 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
764 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
766 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
767 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
768 unsigned int offset, unsigned int len);
769 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
770 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
771 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
772 void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp);
773 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
775 /* portals functions */
776 /* portals attributes */
778 lnet_ptl_is_lazy(lnet_portal_t *ptl)
780 return !!(ptl->ptl_options & LNET_PTL_LAZY);
784 lnet_ptl_is_unique(lnet_portal_t *ptl)
786 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
790 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
792 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
796 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
798 ptl->ptl_options |= opt;
802 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
804 ptl->ptl_options &= ~opt;
807 /* match-table functions */
808 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
809 lnet_process_id_t id, __u64 mbits);
810 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
811 lnet_process_id_t id, __u64 mbits,
814 int lnet_mt_match_md(struct lnet_match_table *mtable,
815 struct lnet_match_info *info, struct lnet_msg *msg);
817 /* portals match/attach functions */
818 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
819 struct list_head *matches, struct list_head *drops);
820 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
821 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
823 /* initialized and finalize portals */
824 int lnet_portals_create(void);
825 void lnet_portals_destroy(void);
827 /* message functions */
828 int lnet_parse (lnet_ni_t *ni, lnet_hdr_t *hdr,
829 lnet_nid_t fromnid, void *private, int rdma_req);
830 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
831 unsigned int offset, unsigned int mlen, unsigned int rlen);
832 lnet_msg_t *lnet_create_reply_msg (lnet_ni_t *ni, lnet_msg_t *get_msg);
833 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
834 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
835 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
836 void lnet_recv_delayed_msg_list(struct list_head *head);
838 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
839 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
840 void lnet_msg_containers_destroy(void);
841 int lnet_msg_containers_create(void);
843 char *lnet_msgtyp2str (int type);
844 void lnet_print_hdr (lnet_hdr_t * hdr);
845 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
847 void lnet_counters_get(lnet_counters_t *counters);
848 void lnet_counters_reset(void);
850 unsigned int lnet_iov_nob (unsigned int niov, struct iovec *iov);
851 int lnet_extract_iov (int dst_niov, struct iovec *dst,
852 int src_niov, struct iovec *src,
853 unsigned int offset, unsigned int len);
855 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
856 int lnet_extract_kiov (int dst_niov, lnet_kiov_t *dst,
857 int src_niov, lnet_kiov_t *src,
858 unsigned int offset, unsigned int len);
860 void lnet_copy_iov2iov (unsigned int ndiov, struct iovec *diov,
861 unsigned int doffset,
862 unsigned int nsiov, struct iovec *siov,
863 unsigned int soffset, unsigned int nob);
864 void lnet_copy_kiov2iov (unsigned int niov, struct iovec *iov,
865 unsigned int iovoffset,
866 unsigned int nkiov, lnet_kiov_t *kiov,
867 unsigned int kiovoffset, unsigned int nob);
868 void lnet_copy_iov2kiov (unsigned int nkiov, lnet_kiov_t *kiov,
869 unsigned int kiovoffset,
870 unsigned int niov, struct iovec *iov,
871 unsigned int iovoffset, unsigned int nob);
872 void lnet_copy_kiov2kiov (unsigned int ndkiov, lnet_kiov_t *dkiov,
873 unsigned int doffset,
874 unsigned int nskiov, lnet_kiov_t *skiov,
875 unsigned int soffset, unsigned int nob);
878 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
879 unsigned int nsiov, struct iovec *siov, unsigned int soffset,
882 struct iovec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
884 lnet_copy_iov2iov(1, &diov, doffset,
885 nsiov, siov, soffset, nob);
889 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
890 unsigned int nsiov, lnet_kiov_t *skiov, unsigned int soffset,
893 struct iovec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
895 lnet_copy_kiov2iov(1, &diov, doffset,
896 nsiov, skiov, soffset, nob);
900 lnet_copy_flat2iov(unsigned int ndiov, struct iovec *diov, unsigned int doffset,
901 int slen, void *src, unsigned int soffset, unsigned int nob)
903 struct iovec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
904 lnet_copy_iov2iov(ndiov, diov, doffset,
905 1, &siov, soffset, nob);
909 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov, unsigned int doffset,
910 int slen, void *src, unsigned int soffset, unsigned int nob)
912 struct iovec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
913 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
914 1, &siov, soffset, nob);
917 void lnet_me_unlink(lnet_me_t *me);
919 void lnet_md_unlink(lnet_libmd_t *md);
920 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
922 void lnet_register_lnd(lnd_t *lnd);
923 void lnet_unregister_lnd(lnd_t *lnd);
924 int lnet_set_ip_niaddr (lnet_ni_t *ni);
927 int lnet_connect(cfs_socket_t **sockp, lnet_nid_t peer_nid,
928 __u32 local_ip, __u32 peer_ip, int peer_port);
929 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
930 __u32 peer_ip, int port);
931 int lnet_count_acceptor_nis(void);
932 int lnet_acceptor_timeout(void);
933 int lnet_acceptor_port(void);
935 void lnet_router_checker(void);
938 #ifdef HAVE_LIBPTHREAD
939 int lnet_count_acceptor_nis(void);
940 int lnet_acceptor_port(void);
943 int lnet_acceptor_start(void);
944 void lnet_acceptor_stop(void);
946 void lnet_get_tunables(void);
947 int lnet_peers_start_down(void);
948 int lnet_peer_buffer_credits(lnet_ni_t *ni);
950 int lnet_router_checker_start(void);
951 void lnet_router_checker_stop(void);
952 void lnet_swap_pinginfo(lnet_ping_info_t *info);
954 int lnet_ping_target_init(void);
955 void lnet_ping_target_fini(void);
956 int lnet_ping(lnet_process_id_t id, int timeout_ms,
957 lnet_process_id_t *ids, int n_ids);
959 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
960 int lnet_parse_routes(char *route_str, int *im_a_router);
961 int lnet_parse_networks(struct list_head *nilist, char *networks);
963 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
964 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
966 void lnet_peer_tables_cleanup(lnet_ni_t *ni);
967 void lnet_peer_tables_destroy(void);
968 int lnet_peer_tables_create(void);
969 void lnet_debug_peer(lnet_nid_t nid);
973 lnet_parse_int_tunable(int *value, char *name)
975 char *env = getenv(name);
981 *value = strtoull(env, &end, 0);
985 CERROR("Can't parse tunable %s=%s\n", name, env);