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>
48 #elif defined(__WINNT__)
49 #include <lnet/winnt/lib-lnet.h>
51 #error Unsupported Operating System
54 #include <libcfs/libcfs.h>
55 #include <lnet/types.h>
56 #include <lnet/lnet.h>
57 #include <lnet/lib-types.h>
59 extern lnet_t the_lnet; /* THE network */
61 #if !defined(__KERNEL__) || defined(LNET_USE_LIB_FREELIST)
62 /* 1 CPT, simplify implementation... */
63 # define LNET_CPT_MAX_BITS 0
65 #else /* KERNEL and no freelist */
67 # if (BITS_PER_LONG == 32)
68 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
69 # define LNET_CPT_MAX_BITS 1
71 # else /* 64-bit system */
73 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
74 * under risk of consuming all lh_cookie.
76 # define LNET_CPT_MAX_BITS 8
77 # endif /* BITS_PER_LONG == 32 */
80 /* max allowed CPT number */
81 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
83 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
84 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
85 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
88 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
90 static inline int lnet_is_route_alive(lnet_route_t *route)
92 if (!route->lr_gateway->lp_alive)
93 return 0; /* gateway is down */
94 if ((route->lr_gateway->lp_ping_feats &
95 LNET_PING_FEAT_NI_STATUS) == 0)
96 return 1; /* no NI status, assume it's alive */
97 /* has NI status, check # down NIs */
98 return route->lr_downis == 0;
101 static inline int lnet_is_wire_handle_none (lnet_handle_wire_t *wh)
103 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
104 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
107 static inline int lnet_md_exhausted (lnet_libmd_t *md)
109 return (md->md_threshold == 0 ||
110 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
111 md->md_offset + md->md_max_size > md->md_length));
114 static inline int lnet_md_unlinkable (lnet_libmd_t *md)
116 /* Should unlink md when its refcount is 0 and either:
117 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
118 * in the latter case md may not be exhausted).
119 * - auto unlink is on and md is exhausted.
121 if (md->md_refcount != 0)
124 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
127 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
128 lnet_md_exhausted(md));
131 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
132 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
135 lnet_cpt_of_cookie(__u64 cookie)
137 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
139 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
140 * get illegal cpt from it's invalid cookie */
141 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
145 lnet_res_lock(int cpt)
147 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
151 lnet_res_unlock(int cpt)
153 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
157 lnet_res_lock_current(void)
159 int cpt = lnet_cpt_current();
166 lnet_net_lock(int cpt)
168 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
172 lnet_net_unlock(int cpt)
174 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
178 lnet_net_lock_current(void)
180 int cpt = lnet_cpt_current();
186 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
187 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
191 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
192 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
193 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
194 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
195 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
196 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
197 #define LNET_MUTEX_LOCK(m) mutex_lock(m)
198 #define LNET_MUTEX_UNLOCK(m) mutex_unlock(m)
200 #else /* !__KERNEL__ */
202 # ifndef HAVE_LIBPTHREAD
203 #define LNET_SINGLE_THREADED_LOCK(l) \
205 LASSERT ((l) == 0); \
209 #define LNET_SINGLE_THREADED_UNLOCK(l) \
211 LASSERT ((l) == 1); \
215 #define LNET_MUTEX_LOCK(m) LNET_SINGLE_THREADED_LOCK(*(m))
216 #define LNET_MUTEX_UNLOCK(m) LNET_SINGLE_THREADED_UNLOCK(*(m))
218 #define lnet_ptl_lock(ptl) \
219 LNET_SINGLE_THREADED_LOCK((ptl)->ptl_lock)
220 #define lnet_ptl_unlock(ptl) \
221 LNET_SINGLE_THREADED_UNLOCK((ptl)->ptl_lock)
223 #define lnet_eq_wait_lock() \
224 LNET_SINGLE_THREADED_LOCK(the_lnet.ln_eq_wait_lock)
225 #define lnet_eq_wait_unlock() \
226 LNET_SINGLE_THREADED_UNLOCK(the_lnet.ln_eq_wait_lock)
228 #define lnet_ni_lock(ni) \
229 LNET_SINGLE_THREADED_LOCK((ni)->ni_lock)
230 #define lnet_ni_unlock(ni) \
231 LNET_SINGLE_THREADED_UNLOCK((ni)->ni_lock)
233 # else /* HAVE_LIBPTHREAD */
235 #define LNET_MUTEX_LOCK(m) pthread_mutex_lock(m)
236 #define LNET_MUTEX_UNLOCK(m) pthread_mutex_unlock(m)
238 #define lnet_ptl_lock(ptl) pthread_mutex_lock(&(ptl)->ptl_lock)
239 #define lnet_ptl_unlock(ptl) pthread_mutex_unlock(&(ptl)->ptl_lock)
241 #define lnet_eq_wait_lock() pthread_mutex_lock(&the_lnet.ln_eq_wait_lock)
242 #define lnet_eq_wait_unlock() pthread_mutex_unlock(&the_lnet.ln_eq_wait_lock)
244 #define lnet_ni_lock(ni) pthread_mutex_lock(&(ni)->ni_lock)
245 #define lnet_ni_unlock(ni) pthread_mutex_unlock(&(ni)->ni_lock)
247 # endif /* HAVE_LIBPTHREAD */
248 #endif /* __KERNEL__ */
250 #define MAX_PORTALS 64
252 /* these are only used by code with LNET_USE_LIB_FREELIST, but we still
253 * exported them to !LNET_USE_LIB_FREELIST for easy implemetation */
254 #define LNET_FL_MAX_MES 2048
255 #define LNET_FL_MAX_MDS 2048
256 #define LNET_FL_MAX_EQS 512
257 #define LNET_FL_MAX_MSGS 2048 /* Outstanding messages */
259 #ifdef LNET_USE_LIB_FREELIST
261 int lnet_freelist_init(lnet_freelist_t *fl, int n, int size);
262 void lnet_freelist_fini(lnet_freelist_t *fl);
265 lnet_freelist_alloc (lnet_freelist_t *fl)
267 /* ALWAYS called with liblock held */
270 if (cfs_list_empty (&fl->fl_list))
273 o = cfs_list_entry (fl->fl_list.next, lnet_freeobj_t, fo_list);
274 cfs_list_del (&o->fo_list);
275 return ((void *)&o->fo_contents);
279 lnet_freelist_free (lnet_freelist_t *fl, void *obj)
281 /* ALWAYS called with liblock held */
282 lnet_freeobj_t *o = cfs_list_entry (obj, lnet_freeobj_t, fo_contents);
284 cfs_list_add (&o->fo_list, &fl->fl_list);
288 static inline lnet_eq_t *
291 /* NEVER called with resource lock held */
292 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
295 LASSERT(LNET_CPT_NUMBER == 1);
298 eq = (lnet_eq_t *)lnet_freelist_alloc(&rec->rec_freelist);
305 lnet_eq_free_locked(lnet_eq_t *eq)
307 /* ALWAYS called with resource lock held */
308 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
310 LASSERT(LNET_CPT_NUMBER == 1);
311 lnet_freelist_free(&rec->rec_freelist, eq);
315 lnet_eq_free(lnet_eq_t *eq)
318 lnet_eq_free_locked(eq);
322 static inline lnet_libmd_t *
323 lnet_md_alloc (lnet_md_t *umd)
325 /* NEVER called with resource lock held */
326 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
329 LASSERT(LNET_CPT_NUMBER == 1);
332 md = (lnet_libmd_t *)lnet_freelist_alloc(&rec->rec_freelist);
336 CFS_INIT_LIST_HEAD(&md->md_list);
342 lnet_md_free_locked(lnet_libmd_t *md)
344 /* ALWAYS called with resource lock held */
345 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
347 LASSERT(LNET_CPT_NUMBER == 1);
348 lnet_freelist_free(&rec->rec_freelist, md);
352 lnet_md_free(lnet_libmd_t *md)
355 lnet_md_free_locked(md);
359 static inline lnet_me_t *
362 /* NEVER called with resource lock held */
363 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
366 LASSERT(LNET_CPT_NUMBER == 1);
369 me = (lnet_me_t *)lnet_freelist_alloc(&rec->rec_freelist);
376 lnet_me_free_locked(lnet_me_t *me)
378 /* ALWAYS called with resource lock held */
379 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
381 LASSERT(LNET_CPT_NUMBER == 1);
382 lnet_freelist_free(&rec->rec_freelist, me);
386 lnet_me_free(lnet_me_t *me)
389 lnet_me_free_locked(me);
393 static inline lnet_msg_t *
394 lnet_msg_alloc (void)
396 /* NEVER called with network lock held */
397 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
400 LASSERT(LNET_CPT_NUMBER == 1);
403 msg = (lnet_msg_t *)lnet_freelist_alloc(&msc->msc_freelist);
407 /* NULL pointers, clear flags etc */
408 memset(msg, 0, sizeof(*msg));
414 lnet_msg_free_locked(lnet_msg_t *msg)
416 /* ALWAYS called with network lock held */
417 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
419 LASSERT(LNET_CPT_NUMBER == 1);
420 LASSERT(!msg->msg_onactivelist);
421 lnet_freelist_free(&msc->msc_freelist, msg);
425 lnet_msg_free (lnet_msg_t *msg)
428 lnet_msg_free_locked(msg);
432 #else /* !LNET_USE_LIB_FREELIST */
434 static inline lnet_eq_t *
437 /* NEVER called with liblock held */
440 LIBCFS_ALLOC(eq, sizeof(*eq));
445 lnet_eq_free(lnet_eq_t *eq)
447 /* ALWAYS called with resource lock held */
448 LIBCFS_FREE(eq, sizeof(*eq));
451 static inline lnet_libmd_t *
452 lnet_md_alloc (lnet_md_t *umd)
454 /* NEVER called with liblock held */
459 if ((umd->options & LNET_MD_KIOV) != 0) {
461 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
463 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
465 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
468 LIBCFS_ALLOC(md, size);
471 /* Set here in case of early free */
472 md->md_options = umd->options;
474 CFS_INIT_LIST_HEAD(&md->md_list);
481 lnet_md_free(lnet_libmd_t *md)
483 /* ALWAYS called with resource lock held */
486 if ((md->md_options & LNET_MD_KIOV) != 0)
487 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
489 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
491 LIBCFS_FREE(md, size);
494 static inline lnet_me_t *
497 /* NEVER called with liblock held */
500 LIBCFS_ALLOC(me, sizeof(*me));
505 lnet_me_free(lnet_me_t *me)
507 /* ALWAYS called with resource lock held */
508 LIBCFS_FREE(me, sizeof(*me));
511 static inline lnet_msg_t *
514 /* NEVER called with liblock held */
517 LIBCFS_ALLOC(msg, sizeof(*msg));
519 /* no need to zero, LIBCFS_ALLOC does for us */
524 lnet_msg_free(lnet_msg_t *msg)
526 /* ALWAYS called with network lock held */
527 LASSERT(!msg->msg_onactivelist);
528 LIBCFS_FREE(msg, sizeof(*msg));
531 #define lnet_eq_free_locked(eq) lnet_eq_free(eq)
532 #define lnet_md_free_locked(md) lnet_md_free(md)
533 #define lnet_me_free_locked(me) lnet_me_free(me)
534 #define lnet_msg_free_locked(msg) lnet_msg_free(msg)
536 #endif /* LNET_USE_LIB_FREELIST */
538 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
540 void lnet_res_lh_initialize(struct lnet_res_container *rec,
541 lnet_libhandle_t *lh);
543 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
545 /* ALWAYS called with resource lock held */
546 /* NB: cookie is still useful, don't reset it */
547 cfs_list_del(&lh->lh_hash_chain);
551 lnet_eq2handle (lnet_handle_eq_t *handle, lnet_eq_t *eq)
554 LNetInvalidateHandle(handle);
558 handle->cookie = eq->eq_lh.lh_cookie;
561 static inline lnet_eq_t *
562 lnet_handle2eq(lnet_handle_eq_t *handle)
564 /* ALWAYS called with resource lock held */
565 lnet_libhandle_t *lh;
567 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
571 return lh_entry(lh, lnet_eq_t, eq_lh);
575 lnet_md2handle (lnet_handle_md_t *handle, lnet_libmd_t *md)
577 handle->cookie = md->md_lh.lh_cookie;
580 static inline lnet_libmd_t *
581 lnet_handle2md(lnet_handle_md_t *handle)
583 /* ALWAYS called with resource lock held */
584 lnet_libhandle_t *lh;
587 cpt = lnet_cpt_of_cookie(handle->cookie);
588 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
593 return lh_entry(lh, lnet_libmd_t, md_lh);
596 static inline lnet_libmd_t *
597 lnet_wire_handle2md(lnet_handle_wire_t *wh)
599 /* ALWAYS called with resource lock held */
600 lnet_libhandle_t *lh;
603 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
606 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
607 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
608 wh->wh_object_cookie);
612 return lh_entry(lh, lnet_libmd_t, md_lh);
616 lnet_me2handle (lnet_handle_me_t *handle, lnet_me_t *me)
618 handle->cookie = me->me_lh.lh_cookie;
621 static inline lnet_me_t *
622 lnet_handle2me(lnet_handle_me_t *handle)
624 /* ALWAYS called with resource lock held */
625 lnet_libhandle_t *lh;
628 cpt = lnet_cpt_of_cookie(handle->cookie);
629 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
634 return lh_entry(lh, lnet_me_t, me_lh);
638 lnet_peer_addref_locked(lnet_peer_t *lp)
640 LASSERT (lp->lp_refcount > 0);
644 extern void lnet_destroy_peer_locked(lnet_peer_t *lp);
647 lnet_peer_decref_locked(lnet_peer_t *lp)
649 LASSERT (lp->lp_refcount > 0);
651 if (lp->lp_refcount == 0)
652 lnet_destroy_peer_locked(lp);
656 lnet_isrouter(lnet_peer_t *lp)
658 return lp->lp_rtr_refcount != 0;
662 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
664 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
665 LASSERT(*ni->ni_refs[cpt] >= 0);
667 (*ni->ni_refs[cpt])++;
671 lnet_ni_addref(lnet_ni_t *ni)
674 lnet_ni_addref_locked(ni, 0);
679 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
681 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
682 LASSERT(*ni->ni_refs[cpt] > 0);
684 (*ni->ni_refs[cpt])--;
688 lnet_ni_decref(lnet_ni_t *ni)
691 lnet_ni_decref_locked(ni, 0);
695 void lnet_ni_free(lnet_ni_t *ni);
698 lnet_nid2peerhash(lnet_nid_t nid)
700 return cfs_hash_long(nid, LNET_PEER_HASH_BITS);
703 static inline cfs_list_t *
704 lnet_net2rnethash(__u32 net)
706 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
708 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
711 extern lnd_t the_lolnd;
714 /* unconditional registration */
715 #define LNET_REGISTER_ULND(lnd) \
719 lnet_register_lnd(&(lnd)); \
722 /* conditional registration */
723 #define LNET_REGISTER_ULND_IF_PRESENT(lnd) \
725 extern lnd_t lnd __attribute__ ((weak, alias("the_lolnd"))); \
727 if (&(lnd) != &the_lolnd) \
728 lnet_register_lnd(&(lnd)); \
732 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid);
733 extern int lnet_cpt_of_nid(lnet_nid_t nid);
734 extern lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
735 extern lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
736 extern lnet_ni_t *lnet_net2ni(__u32 net);
738 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, cfs_time_t when);
739 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when);
740 int lnet_add_route(__u32 net, unsigned int hops, lnet_nid_t gateway_nid,
741 unsigned int priority);
742 int lnet_check_routes(void);
743 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
744 void lnet_destroy_routes(void);
745 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
746 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
747 void lnet_proc_init(void);
748 void lnet_proc_fini(void);
749 int lnet_rtrpools_alloc(int im_a_router);
750 void lnet_rtrpools_free(void);
751 lnet_remotenet_t *lnet_find_net_locked (__u32 net);
753 int lnet_islocalnid(lnet_nid_t nid);
754 int lnet_islocalnet(__u32 net);
756 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
757 unsigned int offset, unsigned int mlen);
758 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
759 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
760 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
761 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
762 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
764 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
765 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
766 unsigned int offset, unsigned int len);
767 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
768 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
769 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
771 /* portals functions */
772 /* portals attributes */
774 lnet_ptl_is_lazy(lnet_portal_t *ptl)
776 return !!(ptl->ptl_options & LNET_PTL_LAZY);
780 lnet_ptl_is_unique(lnet_portal_t *ptl)
782 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
786 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
788 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
792 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
794 ptl->ptl_options |= opt;
798 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
800 ptl->ptl_options &= ~opt;
803 /* match-table functions */
804 cfs_list_t *lnet_mt_match_head(struct lnet_match_table *mtable,
805 lnet_process_id_t id, __u64 mbits);
806 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
807 lnet_process_id_t id, __u64 mbits,
810 int lnet_mt_match_md(struct lnet_match_table *mtable,
811 struct lnet_match_info *info, struct lnet_msg *msg);
813 /* portals match/attach functions */
814 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
815 cfs_list_t *matches, cfs_list_t *drops);
816 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
817 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
819 /* initialized and finalize portals */
820 int lnet_portals_create(void);
821 void lnet_portals_destroy(void);
823 /* message functions */
824 int lnet_parse (lnet_ni_t *ni, lnet_hdr_t *hdr,
825 lnet_nid_t fromnid, void *private, int rdma_req);
826 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
827 unsigned int offset, unsigned int mlen, unsigned int rlen);
828 lnet_msg_t *lnet_create_reply_msg (lnet_ni_t *ni, lnet_msg_t *get_msg);
829 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
830 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
831 void lnet_drop_delayed_msg_list(cfs_list_t *head, char *reason);
832 void lnet_recv_delayed_msg_list(cfs_list_t *head);
834 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
835 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
836 void lnet_msg_containers_destroy(void);
837 int lnet_msg_containers_create(void);
839 char *lnet_msgtyp2str (int type);
840 void lnet_print_hdr (lnet_hdr_t * hdr);
841 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
843 void lnet_counters_get(lnet_counters_t *counters);
844 void lnet_counters_reset(void);
846 unsigned int lnet_iov_nob (unsigned int niov, struct iovec *iov);
847 int lnet_extract_iov (int dst_niov, struct iovec *dst,
848 int src_niov, struct iovec *src,
849 unsigned int offset, unsigned int len);
851 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
852 int lnet_extract_kiov (int dst_niov, lnet_kiov_t *dst,
853 int src_niov, lnet_kiov_t *src,
854 unsigned int offset, unsigned int len);
856 void lnet_copy_iov2iov (unsigned int ndiov, struct iovec *diov,
857 unsigned int doffset,
858 unsigned int nsiov, struct iovec *siov,
859 unsigned int soffset, unsigned int nob);
860 void lnet_copy_kiov2iov (unsigned int niov, struct iovec *iov,
861 unsigned int iovoffset,
862 unsigned int nkiov, lnet_kiov_t *kiov,
863 unsigned int kiovoffset, unsigned int nob);
864 void lnet_copy_iov2kiov (unsigned int nkiov, lnet_kiov_t *kiov,
865 unsigned int kiovoffset,
866 unsigned int niov, struct iovec *iov,
867 unsigned int iovoffset, unsigned int nob);
868 void lnet_copy_kiov2kiov (unsigned int ndkiov, lnet_kiov_t *dkiov,
869 unsigned int doffset,
870 unsigned int nskiov, lnet_kiov_t *skiov,
871 unsigned int soffset, unsigned int nob);
874 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
875 unsigned int nsiov, struct iovec *siov, unsigned int soffset,
878 struct iovec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
880 lnet_copy_iov2iov(1, &diov, doffset,
881 nsiov, siov, soffset, nob);
885 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
886 unsigned int nsiov, lnet_kiov_t *skiov, unsigned int soffset,
889 struct iovec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
891 lnet_copy_kiov2iov(1, &diov, doffset,
892 nsiov, skiov, soffset, nob);
896 lnet_copy_flat2iov(unsigned int ndiov, struct iovec *diov, unsigned int doffset,
897 int slen, void *src, unsigned int soffset, unsigned int nob)
899 struct iovec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
900 lnet_copy_iov2iov(ndiov, diov, doffset,
901 1, &siov, soffset, nob);
905 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov, unsigned int doffset,
906 int slen, void *src, unsigned int soffset, unsigned int nob)
908 struct iovec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
909 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
910 1, &siov, soffset, nob);
913 void lnet_me_unlink(lnet_me_t *me);
915 void lnet_md_unlink(lnet_libmd_t *md);
916 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
918 void lnet_register_lnd(lnd_t *lnd);
919 void lnet_unregister_lnd(lnd_t *lnd);
920 int lnet_set_ip_niaddr (lnet_ni_t *ni);
923 int lnet_connect(cfs_socket_t **sockp, lnet_nid_t peer_nid,
924 __u32 local_ip, __u32 peer_ip, int peer_port);
925 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
926 __u32 peer_ip, int port);
927 int lnet_count_acceptor_nis(void);
928 int lnet_acceptor_timeout(void);
929 int lnet_acceptor_port(void);
931 void lnet_router_checker(void);
934 #ifdef HAVE_LIBPTHREAD
935 int lnet_count_acceptor_nis(void);
936 int lnet_acceptor_port(void);
939 int lnet_acceptor_start(void);
940 void lnet_acceptor_stop(void);
942 void lnet_get_tunables(void);
943 int lnet_peers_start_down(void);
944 int lnet_peer_buffer_credits(lnet_ni_t *ni);
946 int lnet_router_checker_start(void);
947 void lnet_router_checker_stop(void);
948 void lnet_swap_pinginfo(lnet_ping_info_t *info);
950 int lnet_ping_target_init(void);
951 void lnet_ping_target_fini(void);
952 int lnet_ping(lnet_process_id_t id, int timeout_ms,
953 lnet_process_id_t *ids, int n_ids);
955 int lnet_parse_ip2nets (char **networksp, char *ip2nets);
956 int lnet_parse_routes (char *route_str, int *im_a_router);
957 int lnet_parse_networks (cfs_list_t *nilist, char *networks);
959 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
960 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
962 void lnet_peer_tables_cleanup(void);
963 void lnet_peer_tables_destroy(void);
964 int lnet_peer_tables_create(void);
965 void lnet_debug_peer(lnet_nid_t nid);
969 lnet_parse_int_tunable(int *value, char *name)
971 char *env = getenv(name);
977 *value = strtoull(env, &end, 0);
981 CERROR("Can't parse tunable %s=%s\n", name, env);