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 #include <lnet/linux/lib-lnet.h>
46 #include <libcfs/libcfs.h>
47 #include <lnet/types.h>
48 #include <lnet/lnet.h>
49 #include <lnet/lib-types.h>
51 extern lnet_t the_lnet; /* THE network */
53 #if !defined(__KERNEL__) || defined(LNET_USE_LIB_FREELIST)
54 /* 1 CPT, simplify implementation... */
55 # define LNET_CPT_MAX_BITS 0
57 #else /* KERNEL and no freelist */
59 # if (BITS_PER_LONG == 32)
60 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
61 # define LNET_CPT_MAX_BITS 1
63 # else /* 64-bit system */
65 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
66 * under risk of consuming all lh_cookie.
68 # define LNET_CPT_MAX_BITS 8
69 # endif /* BITS_PER_LONG == 32 */
72 /* max allowed CPT number */
73 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
75 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
76 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
77 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
80 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
82 static inline int lnet_is_route_alive(lnet_route_t *route)
84 if (!route->lr_gateway->lp_alive)
85 return 0; /* gateway is down */
86 if ((route->lr_gateway->lp_ping_feats &
87 LNET_PING_FEAT_NI_STATUS) == 0)
88 return 1; /* no NI status, assume it's alive */
89 /* has NI status, check # down NIs */
90 return route->lr_downis == 0;
93 static inline int lnet_is_wire_handle_none (lnet_handle_wire_t *wh)
95 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
96 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
99 static inline int lnet_md_exhausted (lnet_libmd_t *md)
101 return (md->md_threshold == 0 ||
102 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
103 md->md_offset + md->md_max_size > md->md_length));
106 static inline int lnet_md_unlinkable (lnet_libmd_t *md)
108 /* Should unlink md when its refcount is 0 and either:
109 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
110 * in the latter case md may not be exhausted).
111 * - auto unlink is on and md is exhausted.
113 if (md->md_refcount != 0)
116 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
119 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
120 lnet_md_exhausted(md));
123 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
124 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
127 lnet_cpt_of_cookie(__u64 cookie)
129 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
131 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
132 * get illegal cpt from it's invalid cookie */
133 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
137 lnet_res_lock(int cpt)
139 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
143 lnet_res_unlock(int cpt)
145 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
149 lnet_res_lock_current(void)
151 int cpt = lnet_cpt_current();
158 lnet_net_lock(int cpt)
160 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
164 lnet_net_unlock(int cpt)
166 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
170 lnet_net_lock_current(void)
172 int cpt = lnet_cpt_current();
178 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
179 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
183 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
184 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
185 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
186 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
187 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
188 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
189 #define LNET_MUTEX_LOCK(m) mutex_lock(m)
190 #define LNET_MUTEX_UNLOCK(m) mutex_unlock(m)
192 #else /* !__KERNEL__ */
194 # ifndef HAVE_LIBPTHREAD
195 #define LNET_SINGLE_THREADED_LOCK(l) \
197 LASSERT ((l) == 0); \
201 #define LNET_SINGLE_THREADED_UNLOCK(l) \
203 LASSERT ((l) == 1); \
207 #define LNET_MUTEX_LOCK(m) LNET_SINGLE_THREADED_LOCK(*(m))
208 #define LNET_MUTEX_UNLOCK(m) LNET_SINGLE_THREADED_UNLOCK(*(m))
210 #define lnet_ptl_lock(ptl) \
211 LNET_SINGLE_THREADED_LOCK((ptl)->ptl_lock)
212 #define lnet_ptl_unlock(ptl) \
213 LNET_SINGLE_THREADED_UNLOCK((ptl)->ptl_lock)
215 #define lnet_eq_wait_lock() \
216 LNET_SINGLE_THREADED_LOCK(the_lnet.ln_eq_wait_lock)
217 #define lnet_eq_wait_unlock() \
218 LNET_SINGLE_THREADED_UNLOCK(the_lnet.ln_eq_wait_lock)
220 #define lnet_ni_lock(ni) \
221 LNET_SINGLE_THREADED_LOCK((ni)->ni_lock)
222 #define lnet_ni_unlock(ni) \
223 LNET_SINGLE_THREADED_UNLOCK((ni)->ni_lock)
225 # else /* HAVE_LIBPTHREAD */
227 #define LNET_MUTEX_LOCK(m) pthread_mutex_lock(m)
228 #define LNET_MUTEX_UNLOCK(m) pthread_mutex_unlock(m)
230 #define lnet_ptl_lock(ptl) pthread_mutex_lock(&(ptl)->ptl_lock)
231 #define lnet_ptl_unlock(ptl) pthread_mutex_unlock(&(ptl)->ptl_lock)
233 #define lnet_eq_wait_lock() pthread_mutex_lock(&the_lnet.ln_eq_wait_lock)
234 #define lnet_eq_wait_unlock() pthread_mutex_unlock(&the_lnet.ln_eq_wait_lock)
236 #define lnet_ni_lock(ni) pthread_mutex_lock(&(ni)->ni_lock)
237 #define lnet_ni_unlock(ni) pthread_mutex_unlock(&(ni)->ni_lock)
239 # endif /* HAVE_LIBPTHREAD */
240 #endif /* __KERNEL__ */
242 #define MAX_PORTALS 64
244 /* these are only used by code with LNET_USE_LIB_FREELIST, but we still
245 * exported them to !LNET_USE_LIB_FREELIST for easy implemetation */
246 #define LNET_FL_MAX_MES 2048
247 #define LNET_FL_MAX_MDS 2048
248 #define LNET_FL_MAX_EQS 512
249 #define LNET_FL_MAX_MSGS 2048 /* Outstanding messages */
251 #ifdef LNET_USE_LIB_FREELIST
253 int lnet_freelist_init(lnet_freelist_t *fl, int n, int size);
254 void lnet_freelist_fini(lnet_freelist_t *fl);
257 lnet_freelist_alloc (lnet_freelist_t *fl)
259 /* ALWAYS called with liblock held */
262 if (list_empty(&fl->fl_list))
265 o = list_entry(fl->fl_list.next, lnet_freeobj_t, fo_list);
266 list_del(&o->fo_list);
267 return (void *)&o->fo_contents;
271 lnet_freelist_free (lnet_freelist_t *fl, void *obj)
273 /* ALWAYS called with liblock held */
274 lnet_freeobj_t *o = list_entry(obj, lnet_freeobj_t, fo_contents);
276 list_add(&o->fo_list, &fl->fl_list);
280 static inline lnet_eq_t *
283 /* NEVER called with resource lock held */
284 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
287 LASSERT(LNET_CPT_NUMBER == 1);
290 eq = (lnet_eq_t *)lnet_freelist_alloc(&rec->rec_freelist);
297 lnet_eq_free_locked(lnet_eq_t *eq)
299 /* ALWAYS called with resource lock held */
300 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
302 LASSERT(LNET_CPT_NUMBER == 1);
303 lnet_freelist_free(&rec->rec_freelist, eq);
307 lnet_eq_free(lnet_eq_t *eq)
310 lnet_eq_free_locked(eq);
314 static inline lnet_libmd_t *
315 lnet_md_alloc (lnet_md_t *umd)
317 /* NEVER called with resource lock held */
318 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
321 LASSERT(LNET_CPT_NUMBER == 1);
324 md = (lnet_libmd_t *)lnet_freelist_alloc(&rec->rec_freelist);
328 INIT_LIST_HEAD(&md->md_list);
334 lnet_md_free_locked(lnet_libmd_t *md)
336 /* ALWAYS called with resource lock held */
337 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
339 LASSERT(LNET_CPT_NUMBER == 1);
340 lnet_freelist_free(&rec->rec_freelist, md);
344 lnet_md_free(lnet_libmd_t *md)
347 lnet_md_free_locked(md);
351 static inline lnet_me_t *
354 /* NEVER called with resource lock held */
355 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
358 LASSERT(LNET_CPT_NUMBER == 1);
361 me = (lnet_me_t *)lnet_freelist_alloc(&rec->rec_freelist);
368 lnet_me_free_locked(lnet_me_t *me)
370 /* ALWAYS called with resource lock held */
371 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
373 LASSERT(LNET_CPT_NUMBER == 1);
374 lnet_freelist_free(&rec->rec_freelist, me);
378 lnet_me_free(lnet_me_t *me)
381 lnet_me_free_locked(me);
385 static inline lnet_msg_t *
386 lnet_msg_alloc (void)
388 /* NEVER called with network lock held */
389 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
392 LASSERT(LNET_CPT_NUMBER == 1);
395 msg = (lnet_msg_t *)lnet_freelist_alloc(&msc->msc_freelist);
399 /* NULL pointers, clear flags etc */
400 memset(msg, 0, sizeof(*msg));
406 lnet_msg_free_locked(lnet_msg_t *msg)
408 /* ALWAYS called with network lock held */
409 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
411 LASSERT(LNET_CPT_NUMBER == 1);
412 LASSERT(!msg->msg_onactivelist);
413 lnet_freelist_free(&msc->msc_freelist, msg);
417 lnet_msg_free (lnet_msg_t *msg)
420 lnet_msg_free_locked(msg);
424 #else /* !LNET_USE_LIB_FREELIST */
426 static inline lnet_eq_t *
429 /* NEVER called with liblock held */
432 LIBCFS_ALLOC(eq, sizeof(*eq));
437 lnet_eq_free(lnet_eq_t *eq)
439 /* ALWAYS called with resource lock held */
440 LIBCFS_FREE(eq, sizeof(*eq));
443 static inline lnet_libmd_t *
444 lnet_md_alloc (lnet_md_t *umd)
446 /* NEVER called with liblock held */
451 if ((umd->options & LNET_MD_KIOV) != 0) {
453 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
455 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
457 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
460 LIBCFS_ALLOC(md, size);
463 /* Set here in case of early free */
464 md->md_options = umd->options;
466 INIT_LIST_HEAD(&md->md_list);
473 lnet_md_free(lnet_libmd_t *md)
475 /* ALWAYS called with resource lock held */
478 if ((md->md_options & LNET_MD_KIOV) != 0)
479 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
481 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
483 LIBCFS_FREE(md, size);
486 static inline lnet_me_t *
489 /* NEVER called with liblock held */
492 LIBCFS_ALLOC(me, sizeof(*me));
497 lnet_me_free(lnet_me_t *me)
499 /* ALWAYS called with resource lock held */
500 LIBCFS_FREE(me, sizeof(*me));
503 static inline lnet_msg_t *
506 /* NEVER called with liblock held */
509 LIBCFS_ALLOC(msg, sizeof(*msg));
511 /* no need to zero, LIBCFS_ALLOC does for us */
516 lnet_msg_free(lnet_msg_t *msg)
518 /* ALWAYS called with network lock held */
519 LASSERT(!msg->msg_onactivelist);
520 LIBCFS_FREE(msg, sizeof(*msg));
523 #define lnet_eq_free_locked(eq) lnet_eq_free(eq)
524 #define lnet_md_free_locked(md) lnet_md_free(md)
525 #define lnet_me_free_locked(me) lnet_me_free(me)
526 #define lnet_msg_free_locked(msg) lnet_msg_free(msg)
528 #endif /* LNET_USE_LIB_FREELIST */
530 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
532 void lnet_res_lh_initialize(struct lnet_res_container *rec,
533 lnet_libhandle_t *lh);
535 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
537 /* ALWAYS called with resource lock held */
538 /* NB: cookie is still useful, don't reset it */
539 list_del(&lh->lh_hash_chain);
543 lnet_eq2handle (lnet_handle_eq_t *handle, lnet_eq_t *eq)
546 LNetInvalidateHandle(handle);
550 handle->cookie = eq->eq_lh.lh_cookie;
553 static inline lnet_eq_t *
554 lnet_handle2eq(lnet_handle_eq_t *handle)
556 /* ALWAYS called with resource lock held */
557 lnet_libhandle_t *lh;
559 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
563 return lh_entry(lh, lnet_eq_t, eq_lh);
567 lnet_md2handle (lnet_handle_md_t *handle, lnet_libmd_t *md)
569 handle->cookie = md->md_lh.lh_cookie;
572 static inline lnet_libmd_t *
573 lnet_handle2md(lnet_handle_md_t *handle)
575 /* ALWAYS called with resource lock held */
576 lnet_libhandle_t *lh;
579 cpt = lnet_cpt_of_cookie(handle->cookie);
580 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
585 return lh_entry(lh, lnet_libmd_t, md_lh);
588 static inline lnet_libmd_t *
589 lnet_wire_handle2md(lnet_handle_wire_t *wh)
591 /* ALWAYS called with resource lock held */
592 lnet_libhandle_t *lh;
595 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
598 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
599 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
600 wh->wh_object_cookie);
604 return lh_entry(lh, lnet_libmd_t, md_lh);
608 lnet_me2handle (lnet_handle_me_t *handle, lnet_me_t *me)
610 handle->cookie = me->me_lh.lh_cookie;
613 static inline lnet_me_t *
614 lnet_handle2me(lnet_handle_me_t *handle)
616 /* ALWAYS called with resource lock held */
617 lnet_libhandle_t *lh;
620 cpt = lnet_cpt_of_cookie(handle->cookie);
621 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
626 return lh_entry(lh, lnet_me_t, me_lh);
630 lnet_peer_addref_locked(lnet_peer_t *lp)
632 LASSERT (lp->lp_refcount > 0);
636 extern void lnet_destroy_peer_locked(lnet_peer_t *lp);
639 lnet_peer_decref_locked(lnet_peer_t *lp)
641 LASSERT (lp->lp_refcount > 0);
643 if (lp->lp_refcount == 0)
644 lnet_destroy_peer_locked(lp);
648 lnet_isrouter(lnet_peer_t *lp)
650 return lp->lp_rtr_refcount != 0;
654 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
656 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
657 LASSERT(*ni->ni_refs[cpt] >= 0);
659 (*ni->ni_refs[cpt])++;
663 lnet_ni_addref(lnet_ni_t *ni)
666 lnet_ni_addref_locked(ni, 0);
671 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
673 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
674 LASSERT(*ni->ni_refs[cpt] > 0);
676 (*ni->ni_refs[cpt])--;
680 lnet_ni_decref(lnet_ni_t *ni)
683 lnet_ni_decref_locked(ni, 0);
687 void lnet_ni_free(lnet_ni_t *ni);
690 lnet_nid2peerhash(lnet_nid_t nid)
692 return hash_long(nid, LNET_PEER_HASH_BITS);
695 static inline struct list_head *
696 lnet_net2rnethash(__u32 net)
698 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
700 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
703 extern lnd_t the_lolnd;
706 /* unconditional registration */
707 #define LNET_REGISTER_ULND(lnd) \
711 lnet_register_lnd(&(lnd)); \
714 /* conditional registration */
715 #define LNET_REGISTER_ULND_IF_PRESENT(lnd) \
717 extern lnd_t lnd __attribute__ ((weak, alias("the_lolnd"))); \
719 if (&(lnd) != &the_lolnd) \
720 lnet_register_lnd(&(lnd)); \
724 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid);
725 extern int lnet_cpt_of_nid(lnet_nid_t nid);
726 extern lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
727 extern lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
728 extern lnet_ni_t *lnet_net2ni(__u32 net);
730 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, cfs_time_t when);
731 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when);
732 int lnet_add_route(__u32 net, unsigned int hops, lnet_nid_t gateway_nid,
733 unsigned int priority);
734 int lnet_check_routes(void);
735 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
736 void lnet_destroy_routes(void);
737 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
738 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
739 void lnet_proc_init(void);
740 void lnet_proc_fini(void);
741 int lnet_rtrpools_alloc(int im_a_router);
742 void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages);
743 int lnet_rtrpools_adjust(int tiny, int small, int large);
744 int lnet_rtrpools_enable(void);
745 void lnet_rtrpools_disable(void);
746 void lnet_rtrpools_free(int keep_pools);
747 lnet_remotenet_t *lnet_find_net_locked (__u32 net);
749 int lnet_islocalnid(lnet_nid_t nid);
750 int lnet_islocalnet(__u32 net);
752 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
753 unsigned int offset, unsigned int mlen);
754 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
755 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
756 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
757 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
758 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
760 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
761 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
762 unsigned int offset, unsigned int len);
763 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
764 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
765 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
766 void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp);
767 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
769 /* portals functions */
770 /* portals attributes */
772 lnet_ptl_is_lazy(lnet_portal_t *ptl)
774 return !!(ptl->ptl_options & LNET_PTL_LAZY);
778 lnet_ptl_is_unique(lnet_portal_t *ptl)
780 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
784 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
786 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
790 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
792 ptl->ptl_options |= opt;
796 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
798 ptl->ptl_options &= ~opt;
801 /* match-table functions */
802 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
803 lnet_process_id_t id, __u64 mbits);
804 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
805 lnet_process_id_t id, __u64 mbits,
808 int lnet_mt_match_md(struct lnet_match_table *mtable,
809 struct lnet_match_info *info, struct lnet_msg *msg);
811 /* portals match/attach functions */
812 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
813 struct list_head *matches, struct list_head *drops);
814 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
815 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
817 /* initialized and finalize portals */
818 int lnet_portals_create(void);
819 void lnet_portals_destroy(void);
821 /* message functions */
822 int lnet_parse (lnet_ni_t *ni, lnet_hdr_t *hdr,
823 lnet_nid_t fromnid, void *private, int rdma_req);
824 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
825 unsigned int offset, unsigned int mlen, unsigned int rlen);
826 lnet_msg_t *lnet_create_reply_msg (lnet_ni_t *ni, lnet_msg_t *get_msg);
827 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
828 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
829 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
830 void lnet_recv_delayed_msg_list(struct list_head *head);
832 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
833 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
834 void lnet_msg_containers_destroy(void);
835 int lnet_msg_containers_create(void);
837 char *lnet_msgtyp2str (int type);
838 void lnet_print_hdr (lnet_hdr_t * hdr);
839 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
841 void lnet_counters_get(lnet_counters_t *counters);
842 void lnet_counters_reset(void);
844 unsigned int lnet_iov_nob (unsigned int niov, struct iovec *iov);
845 int lnet_extract_iov (int dst_niov, struct iovec *dst,
846 int src_niov, struct iovec *src,
847 unsigned int offset, unsigned int len);
849 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
850 int lnet_extract_kiov (int dst_niov, lnet_kiov_t *dst,
851 int src_niov, lnet_kiov_t *src,
852 unsigned int offset, unsigned int len);
854 void lnet_copy_iov2iov (unsigned int ndiov, struct iovec *diov,
855 unsigned int doffset,
856 unsigned int nsiov, struct iovec *siov,
857 unsigned int soffset, unsigned int nob);
858 void lnet_copy_kiov2iov (unsigned int niov, struct iovec *iov,
859 unsigned int iovoffset,
860 unsigned int nkiov, lnet_kiov_t *kiov,
861 unsigned int kiovoffset, unsigned int nob);
862 void lnet_copy_iov2kiov (unsigned int nkiov, lnet_kiov_t *kiov,
863 unsigned int kiovoffset,
864 unsigned int niov, struct iovec *iov,
865 unsigned int iovoffset, unsigned int nob);
866 void lnet_copy_kiov2kiov (unsigned int ndkiov, lnet_kiov_t *dkiov,
867 unsigned int doffset,
868 unsigned int nskiov, lnet_kiov_t *skiov,
869 unsigned int soffset, unsigned int nob);
872 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
873 unsigned int nsiov, struct iovec *siov, unsigned int soffset,
876 struct iovec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
878 lnet_copy_iov2iov(1, &diov, doffset,
879 nsiov, siov, soffset, nob);
883 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
884 unsigned int nsiov, lnet_kiov_t *skiov, unsigned int soffset,
887 struct iovec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
889 lnet_copy_kiov2iov(1, &diov, doffset,
890 nsiov, skiov, soffset, nob);
894 lnet_copy_flat2iov(unsigned int ndiov, struct iovec *diov, unsigned int doffset,
895 int slen, void *src, unsigned int soffset, unsigned int nob)
897 struct iovec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
898 lnet_copy_iov2iov(ndiov, diov, doffset,
899 1, &siov, soffset, nob);
903 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov, unsigned int doffset,
904 int slen, void *src, unsigned int soffset, unsigned int nob)
906 struct iovec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
907 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
908 1, &siov, soffset, nob);
911 void lnet_me_unlink(lnet_me_t *me);
913 void lnet_md_unlink(lnet_libmd_t *md);
914 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
916 void lnet_register_lnd(lnd_t *lnd);
917 void lnet_unregister_lnd(lnd_t *lnd);
918 int lnet_set_ip_niaddr (lnet_ni_t *ni);
921 int lnet_connect(cfs_socket_t **sockp, lnet_nid_t peer_nid,
922 __u32 local_ip, __u32 peer_ip, int peer_port);
923 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
924 __u32 peer_ip, int port);
925 int lnet_count_acceptor_nis(void);
926 int lnet_acceptor_timeout(void);
927 int lnet_acceptor_port(void);
929 void lnet_router_checker(void);
932 #ifdef HAVE_LIBPTHREAD
933 int lnet_count_acceptor_nis(void);
934 int lnet_acceptor_port(void);
937 int lnet_acceptor_start(void);
938 void lnet_acceptor_stop(void);
940 void lnet_get_tunables(void);
941 int lnet_peers_start_down(void);
942 int lnet_peer_buffer_credits(lnet_ni_t *ni);
944 int lnet_router_checker_start(void);
945 void lnet_router_checker_stop(void);
946 void lnet_swap_pinginfo(lnet_ping_info_t *info);
948 int lnet_ping(lnet_process_id_t id, int timeout_ms,
949 lnet_process_id_t *ids, int n_ids);
951 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
952 int lnet_parse_routes(char *route_str, int *im_a_router);
953 int lnet_parse_networks(struct list_head *nilist, char *networks);
954 int lnet_net_unique(__u32 net, struct list_head *nilist);
956 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
957 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
959 void lnet_peer_tables_cleanup(lnet_ni_t *ni);
960 void lnet_peer_tables_destroy(void);
961 int lnet_peer_tables_create(void);
962 void lnet_debug_peer(lnet_nid_t nid);
963 int lnet_get_peers(int count, __u64 *nid, char *alivness,
964 int *ncpt, int *refcount,
965 int *ni_peer_tx_credits, int *peer_tx_credits,
966 int *peer_rtr_credits, int *peer_min_rtr_credtis,
971 lnet_parse_int_tunable(int *value, char *name)
973 char *env = getenv(name);
979 *value = strtoull(env, &end, 0);
983 CERROR("Can't parse tunable %s=%s\n", name, env);