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>
47 #error Unsupported Operating System
50 #include <libcfs/libcfs.h>
51 #include <lnet/types.h>
52 #include <lnet/lnet.h>
53 #include <lnet/lib-types.h>
55 extern lnet_t the_lnet; /* THE network */
57 #if !defined(__KERNEL__) || defined(LNET_USE_LIB_FREELIST)
58 /* 1 CPT, simplify implementation... */
59 # define LNET_CPT_MAX_BITS 0
61 #else /* KERNEL and no freelist */
63 # if (BITS_PER_LONG == 32)
64 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
65 # define LNET_CPT_MAX_BITS 1
67 # else /* 64-bit system */
69 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
70 * under risk of consuming all lh_cookie.
72 # define LNET_CPT_MAX_BITS 8
73 # endif /* BITS_PER_LONG == 32 */
76 /* max allowed CPT number */
77 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
79 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
80 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
81 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
84 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
86 static inline int lnet_is_route_alive(lnet_route_t *route)
88 if (!route->lr_gateway->lp_alive)
89 return 0; /* gateway is down */
90 if ((route->lr_gateway->lp_ping_feats &
91 LNET_PING_FEAT_NI_STATUS) == 0)
92 return 1; /* no NI status, assume it's alive */
93 /* has NI status, check # down NIs */
94 return route->lr_downis == 0;
97 static inline int lnet_is_wire_handle_none (lnet_handle_wire_t *wh)
99 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
100 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
103 static inline int lnet_md_exhausted (lnet_libmd_t *md)
105 return (md->md_threshold == 0 ||
106 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
107 md->md_offset + md->md_max_size > md->md_length));
110 static inline int lnet_md_unlinkable (lnet_libmd_t *md)
112 /* Should unlink md when its refcount is 0 and either:
113 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
114 * in the latter case md may not be exhausted).
115 * - auto unlink is on and md is exhausted.
117 if (md->md_refcount != 0)
120 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
123 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
124 lnet_md_exhausted(md));
127 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
128 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
131 lnet_cpt_of_cookie(__u64 cookie)
133 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
135 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
136 * get illegal cpt from it's invalid cookie */
137 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
141 lnet_res_lock(int cpt)
143 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
147 lnet_res_unlock(int cpt)
149 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
153 lnet_res_lock_current(void)
155 int cpt = lnet_cpt_current();
162 lnet_net_lock(int cpt)
164 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
168 lnet_net_unlock(int cpt)
170 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
174 lnet_net_lock_current(void)
176 int cpt = lnet_cpt_current();
182 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
183 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
187 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
188 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
189 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
190 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
191 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
192 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
193 #define LNET_MUTEX_LOCK(m) mutex_lock(m)
194 #define LNET_MUTEX_UNLOCK(m) mutex_unlock(m)
196 #else /* !__KERNEL__ */
198 # ifndef HAVE_LIBPTHREAD
199 #define LNET_SINGLE_THREADED_LOCK(l) \
201 LASSERT ((l) == 0); \
205 #define LNET_SINGLE_THREADED_UNLOCK(l) \
207 LASSERT ((l) == 1); \
211 #define LNET_MUTEX_LOCK(m) LNET_SINGLE_THREADED_LOCK(*(m))
212 #define LNET_MUTEX_UNLOCK(m) LNET_SINGLE_THREADED_UNLOCK(*(m))
214 #define lnet_ptl_lock(ptl) \
215 LNET_SINGLE_THREADED_LOCK((ptl)->ptl_lock)
216 #define lnet_ptl_unlock(ptl) \
217 LNET_SINGLE_THREADED_UNLOCK((ptl)->ptl_lock)
219 #define lnet_eq_wait_lock() \
220 LNET_SINGLE_THREADED_LOCK(the_lnet.ln_eq_wait_lock)
221 #define lnet_eq_wait_unlock() \
222 LNET_SINGLE_THREADED_UNLOCK(the_lnet.ln_eq_wait_lock)
224 #define lnet_ni_lock(ni) \
225 LNET_SINGLE_THREADED_LOCK((ni)->ni_lock)
226 #define lnet_ni_unlock(ni) \
227 LNET_SINGLE_THREADED_UNLOCK((ni)->ni_lock)
229 # else /* HAVE_LIBPTHREAD */
231 #define LNET_MUTEX_LOCK(m) pthread_mutex_lock(m)
232 #define LNET_MUTEX_UNLOCK(m) pthread_mutex_unlock(m)
234 #define lnet_ptl_lock(ptl) pthread_mutex_lock(&(ptl)->ptl_lock)
235 #define lnet_ptl_unlock(ptl) pthread_mutex_unlock(&(ptl)->ptl_lock)
237 #define lnet_eq_wait_lock() pthread_mutex_lock(&the_lnet.ln_eq_wait_lock)
238 #define lnet_eq_wait_unlock() pthread_mutex_unlock(&the_lnet.ln_eq_wait_lock)
240 #define lnet_ni_lock(ni) pthread_mutex_lock(&(ni)->ni_lock)
241 #define lnet_ni_unlock(ni) pthread_mutex_unlock(&(ni)->ni_lock)
243 # endif /* HAVE_LIBPTHREAD */
244 #endif /* __KERNEL__ */
246 #define MAX_PORTALS 64
248 /* these are only used by code with LNET_USE_LIB_FREELIST, but we still
249 * exported them to !LNET_USE_LIB_FREELIST for easy implemetation */
250 #define LNET_FL_MAX_MES 2048
251 #define LNET_FL_MAX_MDS 2048
252 #define LNET_FL_MAX_EQS 512
253 #define LNET_FL_MAX_MSGS 2048 /* Outstanding messages */
255 #ifdef LNET_USE_LIB_FREELIST
257 int lnet_freelist_init(lnet_freelist_t *fl, int n, int size);
258 void lnet_freelist_fini(lnet_freelist_t *fl);
261 lnet_freelist_alloc (lnet_freelist_t *fl)
263 /* ALWAYS called with liblock held */
266 if (list_empty(&fl->fl_list))
269 o = list_entry(fl->fl_list.next, lnet_freeobj_t, fo_list);
270 list_del(&o->fo_list);
271 return (void *)&o->fo_contents;
275 lnet_freelist_free (lnet_freelist_t *fl, void *obj)
277 /* ALWAYS called with liblock held */
278 lnet_freeobj_t *o = list_entry(obj, lnet_freeobj_t, fo_contents);
280 list_add(&o->fo_list, &fl->fl_list);
284 static inline lnet_eq_t *
287 /* NEVER called with resource lock held */
288 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
291 LASSERT(LNET_CPT_NUMBER == 1);
294 eq = (lnet_eq_t *)lnet_freelist_alloc(&rec->rec_freelist);
301 lnet_eq_free_locked(lnet_eq_t *eq)
303 /* ALWAYS called with resource lock held */
304 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
306 LASSERT(LNET_CPT_NUMBER == 1);
307 lnet_freelist_free(&rec->rec_freelist, eq);
311 lnet_eq_free(lnet_eq_t *eq)
314 lnet_eq_free_locked(eq);
318 static inline lnet_libmd_t *
319 lnet_md_alloc (lnet_md_t *umd)
321 /* NEVER called with resource lock held */
322 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
325 LASSERT(LNET_CPT_NUMBER == 1);
328 md = (lnet_libmd_t *)lnet_freelist_alloc(&rec->rec_freelist);
332 INIT_LIST_HEAD(&md->md_list);
338 lnet_md_free_locked(lnet_libmd_t *md)
340 /* ALWAYS called with resource lock held */
341 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
343 LASSERT(LNET_CPT_NUMBER == 1);
344 lnet_freelist_free(&rec->rec_freelist, md);
348 lnet_md_free(lnet_libmd_t *md)
351 lnet_md_free_locked(md);
355 static inline lnet_me_t *
358 /* NEVER called with resource lock held */
359 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
362 LASSERT(LNET_CPT_NUMBER == 1);
365 me = (lnet_me_t *)lnet_freelist_alloc(&rec->rec_freelist);
372 lnet_me_free_locked(lnet_me_t *me)
374 /* ALWAYS called with resource lock held */
375 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
377 LASSERT(LNET_CPT_NUMBER == 1);
378 lnet_freelist_free(&rec->rec_freelist, me);
382 lnet_me_free(lnet_me_t *me)
385 lnet_me_free_locked(me);
389 static inline lnet_msg_t *
390 lnet_msg_alloc (void)
392 /* NEVER called with network lock held */
393 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
396 LASSERT(LNET_CPT_NUMBER == 1);
399 msg = (lnet_msg_t *)lnet_freelist_alloc(&msc->msc_freelist);
403 /* NULL pointers, clear flags etc */
404 memset(msg, 0, sizeof(*msg));
410 lnet_msg_free_locked(lnet_msg_t *msg)
412 /* ALWAYS called with network lock held */
413 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
415 LASSERT(LNET_CPT_NUMBER == 1);
416 LASSERT(!msg->msg_onactivelist);
417 lnet_freelist_free(&msc->msc_freelist, msg);
421 lnet_msg_free (lnet_msg_t *msg)
424 lnet_msg_free_locked(msg);
428 #else /* !LNET_USE_LIB_FREELIST */
430 static inline lnet_eq_t *
433 /* NEVER called with liblock held */
436 LIBCFS_ALLOC(eq, sizeof(*eq));
441 lnet_eq_free(lnet_eq_t *eq)
443 /* ALWAYS called with resource lock held */
444 LIBCFS_FREE(eq, sizeof(*eq));
447 static inline lnet_libmd_t *
448 lnet_md_alloc (lnet_md_t *umd)
450 /* NEVER called with liblock held */
455 if ((umd->options & LNET_MD_KIOV) != 0) {
457 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
459 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
461 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
464 LIBCFS_ALLOC(md, size);
467 /* Set here in case of early free */
468 md->md_options = umd->options;
470 INIT_LIST_HEAD(&md->md_list);
477 lnet_md_free(lnet_libmd_t *md)
479 /* ALWAYS called with resource lock held */
482 if ((md->md_options & LNET_MD_KIOV) != 0)
483 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
485 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
487 LIBCFS_FREE(md, size);
490 static inline lnet_me_t *
493 /* NEVER called with liblock held */
496 LIBCFS_ALLOC(me, sizeof(*me));
501 lnet_me_free(lnet_me_t *me)
503 /* ALWAYS called with resource lock held */
504 LIBCFS_FREE(me, sizeof(*me));
507 static inline lnet_msg_t *
510 /* NEVER called with liblock held */
513 LIBCFS_ALLOC(msg, sizeof(*msg));
515 /* no need to zero, LIBCFS_ALLOC does for us */
520 lnet_msg_free(lnet_msg_t *msg)
522 /* ALWAYS called with network lock held */
523 LASSERT(!msg->msg_onactivelist);
524 LIBCFS_FREE(msg, sizeof(*msg));
527 #define lnet_eq_free_locked(eq) lnet_eq_free(eq)
528 #define lnet_md_free_locked(md) lnet_md_free(md)
529 #define lnet_me_free_locked(me) lnet_me_free(me)
530 #define lnet_msg_free_locked(msg) lnet_msg_free(msg)
532 #endif /* LNET_USE_LIB_FREELIST */
534 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
536 void lnet_res_lh_initialize(struct lnet_res_container *rec,
537 lnet_libhandle_t *lh);
539 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
541 /* ALWAYS called with resource lock held */
542 /* NB: cookie is still useful, don't reset it */
543 list_del(&lh->lh_hash_chain);
547 lnet_eq2handle (lnet_handle_eq_t *handle, lnet_eq_t *eq)
550 LNetInvalidateHandle(handle);
554 handle->cookie = eq->eq_lh.lh_cookie;
557 static inline lnet_eq_t *
558 lnet_handle2eq(lnet_handle_eq_t *handle)
560 /* ALWAYS called with resource lock held */
561 lnet_libhandle_t *lh;
563 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
567 return lh_entry(lh, lnet_eq_t, eq_lh);
571 lnet_md2handle (lnet_handle_md_t *handle, lnet_libmd_t *md)
573 handle->cookie = md->md_lh.lh_cookie;
576 static inline lnet_libmd_t *
577 lnet_handle2md(lnet_handle_md_t *handle)
579 /* ALWAYS called with resource lock held */
580 lnet_libhandle_t *lh;
583 cpt = lnet_cpt_of_cookie(handle->cookie);
584 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
589 return lh_entry(lh, lnet_libmd_t, md_lh);
592 static inline lnet_libmd_t *
593 lnet_wire_handle2md(lnet_handle_wire_t *wh)
595 /* ALWAYS called with resource lock held */
596 lnet_libhandle_t *lh;
599 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
602 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
603 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
604 wh->wh_object_cookie);
608 return lh_entry(lh, lnet_libmd_t, md_lh);
612 lnet_me2handle (lnet_handle_me_t *handle, lnet_me_t *me)
614 handle->cookie = me->me_lh.lh_cookie;
617 static inline lnet_me_t *
618 lnet_handle2me(lnet_handle_me_t *handle)
620 /* ALWAYS called with resource lock held */
621 lnet_libhandle_t *lh;
624 cpt = lnet_cpt_of_cookie(handle->cookie);
625 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
630 return lh_entry(lh, lnet_me_t, me_lh);
634 lnet_peer_addref_locked(lnet_peer_t *lp)
636 LASSERT (lp->lp_refcount > 0);
640 extern void lnet_destroy_peer_locked(lnet_peer_t *lp);
643 lnet_peer_decref_locked(lnet_peer_t *lp)
645 LASSERT (lp->lp_refcount > 0);
647 if (lp->lp_refcount == 0)
648 lnet_destroy_peer_locked(lp);
652 lnet_isrouter(lnet_peer_t *lp)
654 return lp->lp_rtr_refcount != 0;
658 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
660 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
661 LASSERT(*ni->ni_refs[cpt] >= 0);
663 (*ni->ni_refs[cpt])++;
667 lnet_ni_addref(lnet_ni_t *ni)
670 lnet_ni_addref_locked(ni, 0);
675 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
677 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
678 LASSERT(*ni->ni_refs[cpt] > 0);
680 (*ni->ni_refs[cpt])--;
684 lnet_ni_decref(lnet_ni_t *ni)
687 lnet_ni_decref_locked(ni, 0);
691 void lnet_ni_free(lnet_ni_t *ni);
694 lnet_nid2peerhash(lnet_nid_t nid)
696 return hash_long(nid, LNET_PEER_HASH_BITS);
699 static inline struct list_head *
700 lnet_net2rnethash(__u32 net)
702 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
704 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
707 extern lnd_t the_lolnd;
710 /* unconditional registration */
711 #define LNET_REGISTER_ULND(lnd) \
715 lnet_register_lnd(&(lnd)); \
718 /* conditional registration */
719 #define LNET_REGISTER_ULND_IF_PRESENT(lnd) \
721 extern lnd_t lnd __attribute__ ((weak, alias("the_lolnd"))); \
723 if (&(lnd) != &the_lolnd) \
724 lnet_register_lnd(&(lnd)); \
728 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid);
729 extern int lnet_cpt_of_nid(lnet_nid_t nid);
730 extern lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
731 extern lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
732 extern lnet_ni_t *lnet_net2ni(__u32 net);
734 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, cfs_time_t when);
735 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when);
736 int lnet_add_route(__u32 net, unsigned int hops, lnet_nid_t gateway_nid,
737 unsigned int priority);
738 int lnet_check_routes(void);
739 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
740 void lnet_destroy_routes(void);
741 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
742 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
743 void lnet_proc_init(void);
744 void lnet_proc_fini(void);
745 int lnet_rtrpools_alloc(int im_a_router);
746 void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages);
747 int lnet_rtrpools_adjust(int tiny, int small, int large);
748 int lnet_rtrpools_enable(void);
749 void lnet_rtrpools_disable(void);
750 void lnet_rtrpools_free(int keep_pools);
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);
770 void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp);
771 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
773 /* portals functions */
774 /* portals attributes */
776 lnet_ptl_is_lazy(lnet_portal_t *ptl)
778 return !!(ptl->ptl_options & LNET_PTL_LAZY);
782 lnet_ptl_is_unique(lnet_portal_t *ptl)
784 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
788 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
790 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
794 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
796 ptl->ptl_options |= opt;
800 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
802 ptl->ptl_options &= ~opt;
805 /* match-table functions */
806 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
807 lnet_process_id_t id, __u64 mbits);
808 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
809 lnet_process_id_t id, __u64 mbits,
812 int lnet_mt_match_md(struct lnet_match_table *mtable,
813 struct lnet_match_info *info, struct lnet_msg *msg);
815 /* portals match/attach functions */
816 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
817 struct list_head *matches, struct list_head *drops);
818 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
819 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
821 /* initialized and finalize portals */
822 int lnet_portals_create(void);
823 void lnet_portals_destroy(void);
825 /* message functions */
826 int lnet_parse (lnet_ni_t *ni, lnet_hdr_t *hdr,
827 lnet_nid_t fromnid, void *private, int rdma_req);
828 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
829 unsigned int offset, unsigned int mlen, unsigned int rlen);
830 lnet_msg_t *lnet_create_reply_msg (lnet_ni_t *ni, lnet_msg_t *get_msg);
831 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
832 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
833 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
834 void lnet_recv_delayed_msg_list(struct list_head *head);
836 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
837 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
838 void lnet_msg_containers_destroy(void);
839 int lnet_msg_containers_create(void);
841 char *lnet_msgtyp2str (int type);
842 void lnet_print_hdr (lnet_hdr_t * hdr);
843 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
845 void lnet_counters_get(lnet_counters_t *counters);
846 void lnet_counters_reset(void);
848 unsigned int lnet_iov_nob (unsigned int niov, struct iovec *iov);
849 int lnet_extract_iov (int dst_niov, struct iovec *dst,
850 int src_niov, struct iovec *src,
851 unsigned int offset, unsigned int len);
853 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
854 int lnet_extract_kiov (int dst_niov, lnet_kiov_t *dst,
855 int src_niov, lnet_kiov_t *src,
856 unsigned int offset, unsigned int len);
858 void lnet_copy_iov2iov (unsigned int ndiov, struct iovec *diov,
859 unsigned int doffset,
860 unsigned int nsiov, struct iovec *siov,
861 unsigned int soffset, unsigned int nob);
862 void lnet_copy_kiov2iov (unsigned int niov, struct iovec *iov,
863 unsigned int iovoffset,
864 unsigned int nkiov, lnet_kiov_t *kiov,
865 unsigned int kiovoffset, unsigned int nob);
866 void lnet_copy_iov2kiov (unsigned int nkiov, lnet_kiov_t *kiov,
867 unsigned int kiovoffset,
868 unsigned int niov, struct iovec *iov,
869 unsigned int iovoffset, unsigned int nob);
870 void lnet_copy_kiov2kiov (unsigned int ndkiov, lnet_kiov_t *dkiov,
871 unsigned int doffset,
872 unsigned int nskiov, lnet_kiov_t *skiov,
873 unsigned int soffset, unsigned int nob);
876 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
877 unsigned int nsiov, struct iovec *siov, unsigned int soffset,
880 struct iovec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
882 lnet_copy_iov2iov(1, &diov, doffset,
883 nsiov, siov, soffset, nob);
887 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
888 unsigned int nsiov, lnet_kiov_t *skiov, unsigned int soffset,
891 struct iovec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
893 lnet_copy_kiov2iov(1, &diov, doffset,
894 nsiov, skiov, soffset, nob);
898 lnet_copy_flat2iov(unsigned int ndiov, struct iovec *diov, unsigned int doffset,
899 int slen, void *src, unsigned int soffset, unsigned int nob)
901 struct iovec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
902 lnet_copy_iov2iov(ndiov, diov, doffset,
903 1, &siov, soffset, nob);
907 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov, unsigned int doffset,
908 int slen, void *src, unsigned int soffset, unsigned int nob)
910 struct iovec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
911 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
912 1, &siov, soffset, nob);
915 void lnet_me_unlink(lnet_me_t *me);
917 void lnet_md_unlink(lnet_libmd_t *md);
918 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
920 void lnet_register_lnd(lnd_t *lnd);
921 void lnet_unregister_lnd(lnd_t *lnd);
922 int lnet_set_ip_niaddr (lnet_ni_t *ni);
925 int lnet_connect(cfs_socket_t **sockp, lnet_nid_t peer_nid,
926 __u32 local_ip, __u32 peer_ip, int peer_port);
927 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
928 __u32 peer_ip, int port);
929 int lnet_count_acceptor_nis(void);
930 int lnet_acceptor_timeout(void);
931 int lnet_acceptor_port(void);
933 void lnet_router_checker(void);
936 #ifdef HAVE_LIBPTHREAD
937 int lnet_count_acceptor_nis(void);
938 int lnet_acceptor_port(void);
941 int lnet_acceptor_start(void);
942 void lnet_acceptor_stop(void);
944 void lnet_get_tunables(void);
945 int lnet_peers_start_down(void);
946 int lnet_peer_buffer_credits(lnet_ni_t *ni);
948 int lnet_router_checker_start(void);
949 void lnet_router_checker_stop(void);
950 void lnet_swap_pinginfo(lnet_ping_info_t *info);
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(struct list_head *nilist, char *networks);
958 int lnet_net_unique(__u32 net, struct list_head *nilist);
960 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
961 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
963 void lnet_peer_tables_cleanup(lnet_ni_t *ni);
964 void lnet_peer_tables_destroy(void);
965 int lnet_peer_tables_create(void);
966 void lnet_debug_peer(lnet_nid_t nid);
970 lnet_parse_int_tunable(int *value, char *name)
972 char *env = getenv(name);
978 *value = strtoull(env, &end, 0);
982 CERROR("Can't parse tunable %s=%s\n", name, env);