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, 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_wire_handle_none (lnet_handle_wire_t *wh)
92 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
93 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
96 static inline int lnet_md_exhausted (lnet_libmd_t *md)
98 return (md->md_threshold == 0 ||
99 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
100 md->md_offset + md->md_max_size > md->md_length));
103 static inline int lnet_md_unlinkable (lnet_libmd_t *md)
105 /* Should unlink md when its refcount is 0 and either:
106 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
107 * in the latter case md may not be exhausted).
108 * - auto unlink is on and md is exhausted.
110 if (md->md_refcount != 0)
113 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
116 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
117 lnet_md_exhausted(md));
120 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
121 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
124 lnet_cpt_of_cookie(__u64 cookie)
126 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
128 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
129 * get illegal cpt from it's invalid cookie */
130 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
134 lnet_res_lock(int cpt)
136 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
140 lnet_res_unlock(int cpt)
142 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
146 lnet_res_lock_current(void)
148 int cpt = lnet_cpt_current();
155 lnet_net_lock(int cpt)
157 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
161 lnet_net_unlock(int cpt)
163 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
167 lnet_net_lock_current(void)
169 int cpt = lnet_cpt_current();
175 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
176 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
180 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
181 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
182 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
183 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
184 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
185 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
186 #define LNET_MUTEX_LOCK(m) mutex_lock(m)
187 #define LNET_MUTEX_UNLOCK(m) mutex_unlock(m)
189 #else /* !__KERNEL__ */
191 # ifndef HAVE_LIBPTHREAD
192 #define LNET_SINGLE_THREADED_LOCK(l) \
194 LASSERT ((l) == 0); \
198 #define LNET_SINGLE_THREADED_UNLOCK(l) \
200 LASSERT ((l) == 1); \
204 #define LNET_MUTEX_LOCK(m) LNET_SINGLE_THREADED_LOCK(*(m))
205 #define LNET_MUTEX_UNLOCK(m) LNET_SINGLE_THREADED_UNLOCK(*(m))
207 #define lnet_ptl_lock(ptl) \
208 LNET_SINGLE_THREADED_LOCK((ptl)->ptl_lock)
209 #define lnet_ptl_unlock(ptl) \
210 LNET_SINGLE_THREADED_UNLOCK((ptl)->ptl_lock)
212 #define lnet_eq_wait_lock() \
213 LNET_SINGLE_THREADED_LOCK(the_lnet.ln_eq_wait_lock)
214 #define lnet_eq_wait_unlock() \
215 LNET_SINGLE_THREADED_UNLOCK(the_lnet.ln_eq_wait_lock)
217 #define lnet_ni_lock(ni) \
218 LNET_SINGLE_THREADED_LOCK((ni)->ni_lock)
219 #define lnet_ni_unlock(ni) \
220 LNET_SINGLE_THREADED_UNLOCK((ni)->ni_lock)
222 # else /* HAVE_LIBPTHREAD */
224 #define LNET_MUTEX_LOCK(m) pthread_mutex_lock(m)
225 #define LNET_MUTEX_UNLOCK(m) pthread_mutex_unlock(m)
227 #define lnet_ptl_lock(ptl) pthread_mutex_lock(&(ptl)->ptl_lock)
228 #define lnet_ptl_unlock(ptl) pthread_mutex_unlock(&(ptl)->ptl_lock)
230 #define lnet_eq_wait_lock() pthread_mutex_lock(&the_lnet.ln_eq_wait_lock)
231 #define lnet_eq_wait_unlock() pthread_mutex_unlock(&the_lnet.ln_eq_wait_lock)
233 #define lnet_ni_lock(ni) pthread_mutex_lock(&(ni)->ni_lock)
234 #define lnet_ni_unlock(ni) pthread_mutex_unlock(&(ni)->ni_lock)
236 # endif /* HAVE_LIBPTHREAD */
237 #endif /* __KERNEL__ */
239 #define MAX_PORTALS 64
241 /* these are only used by code with LNET_USE_LIB_FREELIST, but we still
242 * exported them to !LNET_USE_LIB_FREELIST for easy implemetation */
243 #define LNET_FL_MAX_MES 2048
244 #define LNET_FL_MAX_MDS 2048
245 #define LNET_FL_MAX_EQS 512
246 #define LNET_FL_MAX_MSGS 2048 /* Outstanding messages */
248 #ifdef LNET_USE_LIB_FREELIST
250 int lnet_freelist_init(lnet_freelist_t *fl, int n, int size);
251 void lnet_freelist_fini(lnet_freelist_t *fl);
254 lnet_freelist_alloc (lnet_freelist_t *fl)
256 /* ALWAYS called with liblock held */
259 if (cfs_list_empty (&fl->fl_list))
262 o = cfs_list_entry (fl->fl_list.next, lnet_freeobj_t, fo_list);
263 cfs_list_del (&o->fo_list);
264 return ((void *)&o->fo_contents);
268 lnet_freelist_free (lnet_freelist_t *fl, void *obj)
270 /* ALWAYS called with liblock held */
271 lnet_freeobj_t *o = cfs_list_entry (obj, lnet_freeobj_t, fo_contents);
273 cfs_list_add (&o->fo_list, &fl->fl_list);
277 static inline lnet_eq_t *
280 /* NEVER called with resource lock held */
281 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
284 LASSERT(LNET_CPT_NUMBER == 1);
287 eq = (lnet_eq_t *)lnet_freelist_alloc(&rec->rec_freelist);
294 lnet_eq_free_locked(lnet_eq_t *eq)
296 /* ALWAYS called with resource lock held */
297 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
299 LASSERT(LNET_CPT_NUMBER == 1);
300 lnet_freelist_free(&rec->rec_freelist, eq);
304 lnet_eq_free(lnet_eq_t *eq)
307 lnet_eq_free_locked(eq);
311 static inline lnet_libmd_t *
312 lnet_md_alloc (lnet_md_t *umd)
314 /* NEVER called with resource lock held */
315 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
318 LASSERT(LNET_CPT_NUMBER == 1);
321 md = (lnet_libmd_t *)lnet_freelist_alloc(&rec->rec_freelist);
325 CFS_INIT_LIST_HEAD(&md->md_list);
331 lnet_md_free_locked(lnet_libmd_t *md)
333 /* ALWAYS called with resource lock held */
334 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
336 LASSERT(LNET_CPT_NUMBER == 1);
337 lnet_freelist_free(&rec->rec_freelist, md);
341 lnet_md_free(lnet_libmd_t *md)
344 lnet_md_free_locked(md);
348 static inline lnet_me_t *
351 /* NEVER called with resource lock held */
352 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
355 LASSERT(LNET_CPT_NUMBER == 1);
358 me = (lnet_me_t *)lnet_freelist_alloc(&rec->rec_freelist);
365 lnet_me_free_locked(lnet_me_t *me)
367 /* ALWAYS called with resource lock held */
368 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
370 LASSERT(LNET_CPT_NUMBER == 1);
371 lnet_freelist_free(&rec->rec_freelist, me);
375 lnet_me_free(lnet_me_t *me)
378 lnet_me_free_locked(me);
382 static inline lnet_msg_t *
383 lnet_msg_alloc (void)
385 /* NEVER called with network lock held */
386 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
389 LASSERT(LNET_CPT_NUMBER == 1);
392 msg = (lnet_msg_t *)lnet_freelist_alloc(&msc->msc_freelist);
396 /* NULL pointers, clear flags etc */
397 memset(msg, 0, sizeof(*msg));
403 lnet_msg_free_locked(lnet_msg_t *msg)
405 /* ALWAYS called with network lock held */
406 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
408 LASSERT(LNET_CPT_NUMBER == 1);
409 LASSERT(!msg->msg_onactivelist);
410 lnet_freelist_free(&msc->msc_freelist, msg);
414 lnet_msg_free (lnet_msg_t *msg)
417 lnet_msg_free_locked(msg);
421 #else /* !LNET_USE_LIB_FREELIST */
423 static inline lnet_eq_t *
426 /* NEVER called with liblock held */
429 LIBCFS_ALLOC(eq, sizeof(*eq));
434 lnet_eq_free(lnet_eq_t *eq)
436 /* ALWAYS called with resource lock held */
437 LIBCFS_FREE(eq, sizeof(*eq));
440 static inline lnet_libmd_t *
441 lnet_md_alloc (lnet_md_t *umd)
443 /* NEVER called with liblock held */
448 if ((umd->options & LNET_MD_KIOV) != 0) {
450 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
452 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
454 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
457 LIBCFS_ALLOC(md, size);
460 /* Set here in case of early free */
461 md->md_options = umd->options;
463 CFS_INIT_LIST_HEAD(&md->md_list);
470 lnet_md_free(lnet_libmd_t *md)
472 /* ALWAYS called with resource lock held */
475 if ((md->md_options & LNET_MD_KIOV) != 0)
476 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
478 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
480 LIBCFS_FREE(md, size);
483 static inline lnet_me_t *
486 /* NEVER called with liblock held */
489 LIBCFS_ALLOC(me, sizeof(*me));
494 lnet_me_free(lnet_me_t *me)
496 /* ALWAYS called with resource lock held */
497 LIBCFS_FREE(me, sizeof(*me));
500 static inline lnet_msg_t *
503 /* NEVER called with liblock held */
506 LIBCFS_ALLOC(msg, sizeof(*msg));
508 /* no need to zero, LIBCFS_ALLOC does for us */
513 lnet_msg_free(lnet_msg_t *msg)
515 /* ALWAYS called with network lock held */
516 LASSERT(!msg->msg_onactivelist);
517 LIBCFS_FREE(msg, sizeof(*msg));
520 #define lnet_eq_free_locked(eq) lnet_eq_free(eq)
521 #define lnet_md_free_locked(md) lnet_md_free(md)
522 #define lnet_me_free_locked(me) lnet_me_free(me)
523 #define lnet_msg_free_locked(msg) lnet_msg_free(msg)
525 #endif /* LNET_USE_LIB_FREELIST */
527 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
529 void lnet_res_lh_initialize(struct lnet_res_container *rec,
530 lnet_libhandle_t *lh);
532 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
534 /* ALWAYS called with resource lock held */
535 /* NB: cookie is still useful, don't reset it */
536 cfs_list_del(&lh->lh_hash_chain);
540 lnet_eq2handle (lnet_handle_eq_t *handle, lnet_eq_t *eq)
543 LNetInvalidateHandle(handle);
547 handle->cookie = eq->eq_lh.lh_cookie;
550 static inline lnet_eq_t *
551 lnet_handle2eq(lnet_handle_eq_t *handle)
553 /* ALWAYS called with resource lock held */
554 lnet_libhandle_t *lh;
556 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
560 return lh_entry(lh, lnet_eq_t, eq_lh);
564 lnet_md2handle (lnet_handle_md_t *handle, lnet_libmd_t *md)
566 handle->cookie = md->md_lh.lh_cookie;
569 static inline lnet_libmd_t *
570 lnet_handle2md(lnet_handle_md_t *handle)
572 /* ALWAYS called with resource lock held */
573 lnet_libhandle_t *lh;
576 cpt = lnet_cpt_of_cookie(handle->cookie);
577 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
582 return lh_entry(lh, lnet_libmd_t, md_lh);
585 static inline lnet_libmd_t *
586 lnet_wire_handle2md(lnet_handle_wire_t *wh)
588 /* ALWAYS called with resource lock held */
589 lnet_libhandle_t *lh;
592 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
595 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
596 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
597 wh->wh_object_cookie);
601 return lh_entry(lh, lnet_libmd_t, md_lh);
605 lnet_me2handle (lnet_handle_me_t *handle, lnet_me_t *me)
607 handle->cookie = me->me_lh.lh_cookie;
610 static inline lnet_me_t *
611 lnet_handle2me(lnet_handle_me_t *handle)
613 /* ALWAYS called with resource lock held */
614 lnet_libhandle_t *lh;
617 cpt = lnet_cpt_of_cookie(handle->cookie);
618 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
623 return lh_entry(lh, lnet_me_t, me_lh);
627 lnet_peer_addref_locked(lnet_peer_t *lp)
629 LASSERT (lp->lp_refcount > 0);
633 extern void lnet_destroy_peer_locked(lnet_peer_t *lp);
636 lnet_peer_decref_locked(lnet_peer_t *lp)
638 LASSERT (lp->lp_refcount > 0);
640 if (lp->lp_refcount == 0)
641 lnet_destroy_peer_locked(lp);
645 lnet_isrouter(lnet_peer_t *lp)
647 return lp->lp_rtr_refcount != 0;
651 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
653 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
654 LASSERT(*ni->ni_refs[cpt] >= 0);
656 (*ni->ni_refs[cpt])++;
660 lnet_ni_addref(lnet_ni_t *ni)
663 lnet_ni_addref_locked(ni, 0);
668 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
670 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
671 LASSERT(*ni->ni_refs[cpt] > 0);
673 (*ni->ni_refs[cpt])--;
677 lnet_ni_decref(lnet_ni_t *ni)
680 lnet_ni_decref_locked(ni, 0);
684 void lnet_ni_free(lnet_ni_t *ni);
687 lnet_nid2peerhash(lnet_nid_t nid)
689 return cfs_hash_long(nid, LNET_PEER_HASH_BITS);
692 static inline cfs_list_t *
693 lnet_net2rnethash(__u32 net)
695 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
697 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
700 extern lnd_t the_lolnd;
703 /* unconditional registration */
704 #define LNET_REGISTER_ULND(lnd) \
708 lnet_register_lnd(&(lnd)); \
711 /* conditional registration */
712 #define LNET_REGISTER_ULND_IF_PRESENT(lnd) \
714 extern lnd_t lnd __attribute__ ((weak, alias("the_lolnd"))); \
716 if (&(lnd) != &the_lolnd) \
717 lnet_register_lnd(&(lnd)); \
721 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid);
722 extern int lnet_cpt_of_nid(lnet_nid_t nid);
723 extern lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
724 extern lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
725 extern lnet_ni_t *lnet_net2ni(__u32 net);
727 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, cfs_time_t when);
728 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when);
729 int lnet_add_route(__u32 net, unsigned int hops, lnet_nid_t gateway_nid);
730 int lnet_check_routes(void);
731 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
732 void lnet_destroy_routes(void);
733 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
734 lnet_nid_t *gateway, __u32 *alive);
735 void lnet_proc_init(void);
736 void lnet_proc_fini(void);
737 int lnet_rtrpools_alloc(int im_a_router);
738 void lnet_rtrpools_free(void);
739 lnet_remotenet_t *lnet_find_net_locked (__u32 net);
741 int lnet_islocalnid(lnet_nid_t nid);
742 int lnet_islocalnet(__u32 net);
744 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
745 unsigned int offset, unsigned int mlen);
746 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
747 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
748 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
749 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
750 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
752 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
753 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
754 unsigned int offset, unsigned int len);
755 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
756 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
757 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
759 /* portals functions */
760 /* portals attributes */
762 lnet_ptl_is_lazy(lnet_portal_t *ptl)
764 return !!(ptl->ptl_options & LNET_PTL_LAZY);
768 lnet_ptl_is_unique(lnet_portal_t *ptl)
770 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
774 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
776 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
780 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
782 ptl->ptl_options |= opt;
786 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
788 ptl->ptl_options &= ~opt;
791 /* match-table functions */
792 cfs_list_t *lnet_mt_match_head(struct lnet_match_table *mtable,
793 lnet_process_id_t id, __u64 mbits);
794 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
795 lnet_process_id_t id, __u64 mbits,
798 int lnet_mt_match_md(struct lnet_match_table *mtable,
799 struct lnet_match_info *info, struct lnet_msg *msg);
801 /* portals match/attach functions */
802 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
803 cfs_list_t *matches, cfs_list_t *drops);
804 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
805 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
807 /* initialized and finalize portals */
808 int lnet_portals_create(void);
809 void lnet_portals_destroy(void);
811 /* message functions */
812 int lnet_parse (lnet_ni_t *ni, lnet_hdr_t *hdr,
813 lnet_nid_t fromnid, void *private, int rdma_req);
814 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
815 unsigned int offset, unsigned int mlen, unsigned int rlen);
816 lnet_msg_t *lnet_create_reply_msg (lnet_ni_t *ni, lnet_msg_t *get_msg);
817 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
818 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
819 void lnet_drop_delayed_msg_list(cfs_list_t *head, char *reason);
820 void lnet_recv_delayed_msg_list(cfs_list_t *head);
822 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
823 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
824 void lnet_msg_containers_destroy(void);
825 int lnet_msg_containers_create(void);
827 char *lnet_msgtyp2str (int type);
828 void lnet_print_hdr (lnet_hdr_t * hdr);
829 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
831 void lnet_counters_get(lnet_counters_t *counters);
832 void lnet_counters_reset(void);
834 unsigned int lnet_iov_nob (unsigned int niov, struct iovec *iov);
835 int lnet_extract_iov (int dst_niov, struct iovec *dst,
836 int src_niov, struct iovec *src,
837 unsigned int offset, unsigned int len);
839 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
840 int lnet_extract_kiov (int dst_niov, lnet_kiov_t *dst,
841 int src_niov, lnet_kiov_t *src,
842 unsigned int offset, unsigned int len);
844 void lnet_copy_iov2iov (unsigned int ndiov, struct iovec *diov,
845 unsigned int doffset,
846 unsigned int nsiov, struct iovec *siov,
847 unsigned int soffset, unsigned int nob);
848 void lnet_copy_kiov2iov (unsigned int niov, struct iovec *iov,
849 unsigned int iovoffset,
850 unsigned int nkiov, lnet_kiov_t *kiov,
851 unsigned int kiovoffset, unsigned int nob);
852 void lnet_copy_iov2kiov (unsigned int nkiov, lnet_kiov_t *kiov,
853 unsigned int kiovoffset,
854 unsigned int niov, struct iovec *iov,
855 unsigned int iovoffset, unsigned int nob);
856 void lnet_copy_kiov2kiov (unsigned int ndkiov, lnet_kiov_t *dkiov,
857 unsigned int doffset,
858 unsigned int nskiov, lnet_kiov_t *skiov,
859 unsigned int soffset, unsigned int nob);
862 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
863 unsigned int nsiov, struct iovec *siov, unsigned int soffset,
866 struct iovec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
868 lnet_copy_iov2iov(1, &diov, doffset,
869 nsiov, siov, soffset, nob);
873 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
874 unsigned int nsiov, lnet_kiov_t *skiov, unsigned int soffset,
877 struct iovec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
879 lnet_copy_kiov2iov(1, &diov, doffset,
880 nsiov, skiov, soffset, nob);
884 lnet_copy_flat2iov(unsigned int ndiov, struct iovec *diov, unsigned int doffset,
885 int slen, void *src, unsigned int soffset, unsigned int nob)
887 struct iovec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
888 lnet_copy_iov2iov(ndiov, diov, doffset,
889 1, &siov, soffset, nob);
893 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov, unsigned int doffset,
894 int slen, void *src, unsigned int soffset, unsigned int nob)
896 struct iovec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
897 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
898 1, &siov, soffset, nob);
901 void lnet_me_unlink(lnet_me_t *me);
903 void lnet_md_unlink(lnet_libmd_t *md);
904 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
906 void lnet_register_lnd(lnd_t *lnd);
907 void lnet_unregister_lnd(lnd_t *lnd);
908 int lnet_set_ip_niaddr (lnet_ni_t *ni);
911 int lnet_connect(cfs_socket_t **sockp, lnet_nid_t peer_nid,
912 __u32 local_ip, __u32 peer_ip, int peer_port);
913 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
914 __u32 peer_ip, int port);
915 int lnet_count_acceptor_nis(void);
916 int lnet_acceptor_timeout(void);
917 int lnet_acceptor_port(void);
919 void lnet_router_checker(void);
922 #ifdef HAVE_LIBPTHREAD
923 int lnet_count_acceptor_nis(void);
924 int lnet_acceptor_port(void);
927 int lnet_acceptor_start(void);
928 void lnet_acceptor_stop(void);
930 void lnet_get_tunables(void);
931 int lnet_peers_start_down(void);
932 int lnet_peer_buffer_credits(lnet_ni_t *ni);
934 int lnet_router_checker_start(void);
935 void lnet_router_checker_stop(void);
936 void lnet_swap_pinginfo(lnet_ping_info_t *info);
938 int lnet_ping_target_init(void);
939 void lnet_ping_target_fini(void);
940 int lnet_ping(lnet_process_id_t id, int timeout_ms,
941 lnet_process_id_t *ids, int n_ids);
943 int lnet_parse_ip2nets (char **networksp, char *ip2nets);
944 int lnet_parse_routes (char *route_str, int *im_a_router);
945 int lnet_parse_networks (cfs_list_t *nilist, char *networks);
947 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
948 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
950 void lnet_peer_tables_cleanup(void);
951 void lnet_peer_tables_destroy(void);
952 int lnet_peer_tables_create(void);
953 void lnet_debug_peer(lnet_nid_t nid);
957 lnet_parse_int_tunable(int *value, char *name)
959 char *env = getenv(name);
965 *value = strtoull(env, &end, 0);
969 CERROR("Can't parse tunable %s=%s\n", name, env);