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 #include "linux/lib-lnet.h"
45 #include "../libcfs/libcfs.h"
48 #include "lib-types.h"
50 extern lnet_t the_lnet; /* THE network */
52 #if defined(LNET_USE_LIB_FREELIST)
53 /* 1 CPT, simplify implementation... */
54 # define LNET_CPT_MAX_BITS 0
56 #else /* KERNEL and no freelist */
58 # if (BITS_PER_LONG == 32)
59 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
60 # define LNET_CPT_MAX_BITS 1
62 # else /* 64-bit system */
64 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
65 * under risk of consuming all lh_cookie.
67 # define LNET_CPT_MAX_BITS 8
68 # endif /* BITS_PER_LONG == 32 */
71 /* max allowed CPT number */
72 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
74 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
75 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
76 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
79 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
81 static inline int lnet_is_wire_handle_none(lnet_handle_wire_t *wh)
83 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
84 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
87 static inline int lnet_md_exhausted(lnet_libmd_t *md)
89 return (md->md_threshold == 0 ||
90 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
91 md->md_offset + md->md_max_size > md->md_length));
94 static inline int lnet_md_unlinkable(lnet_libmd_t *md)
96 /* Should unlink md when its refcount is 0 and either:
97 * - md has been flagged for deletion (by auto unlink or
98 * LNetM[DE]Unlink, in the latter case md may not be exhausted).
99 * - auto unlink is on and md is exhausted.
101 if (md->md_refcount != 0)
104 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
107 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
108 lnet_md_exhausted(md));
111 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
112 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
115 lnet_cpt_of_cookie(__u64 cookie)
117 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
119 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
120 * get illegal cpt from it's invalid cookie */
121 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
125 lnet_res_lock(int cpt)
127 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
131 lnet_res_unlock(int cpt)
133 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
137 lnet_res_lock_current(void)
139 int cpt = lnet_cpt_current();
146 lnet_net_lock(int cpt)
148 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
152 lnet_net_unlock(int cpt)
154 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
158 lnet_net_lock_current(void)
160 int cpt = lnet_cpt_current();
166 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
167 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
169 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
170 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
171 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
172 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
173 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
174 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
175 #define LNET_MUTEX_LOCK(m) mutex_lock(m)
176 #define LNET_MUTEX_UNLOCK(m) mutex_unlock(m)
178 #define MAX_PORTALS 64
180 /* these are only used by code with LNET_USE_LIB_FREELIST, but we still
181 * exported them to !LNET_USE_LIB_FREELIST for easy implementation */
182 #define LNET_FL_MAX_MES 2048
183 #define LNET_FL_MAX_MDS 2048
184 #define LNET_FL_MAX_EQS 512
185 #define LNET_FL_MAX_MSGS 2048 /* Outstanding messages */
187 #ifdef LNET_USE_LIB_FREELIST
189 int lnet_freelist_init(lnet_freelist_t *fl, int n, int size);
190 void lnet_freelist_fini(lnet_freelist_t *fl);
193 lnet_freelist_alloc(lnet_freelist_t *fl)
195 /* ALWAYS called with liblock held */
198 if (list_empty(&fl->fl_list))
201 o = list_entry(fl->fl_list.next, lnet_freeobj_t, fo_list);
202 list_del(&o->fo_list);
203 return (void *)&o->fo_contents;
207 lnet_freelist_free(lnet_freelist_t *fl, void *obj)
209 /* ALWAYS called with liblock held */
210 lnet_freeobj_t *o = list_entry(obj, lnet_freeobj_t, fo_contents);
212 list_add(&o->fo_list, &fl->fl_list);
215 static inline lnet_eq_t *
218 /* NEVER called with resource lock held */
219 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
222 LASSERT(LNET_CPT_NUMBER == 1);
225 eq = (lnet_eq_t *)lnet_freelist_alloc(&rec->rec_freelist);
232 lnet_eq_free_locked(lnet_eq_t *eq)
234 /* ALWAYS called with resource lock held */
235 struct lnet_res_container *rec = &the_lnet.ln_eq_container;
237 LASSERT(LNET_CPT_NUMBER == 1);
238 lnet_freelist_free(&rec->rec_freelist, eq);
242 lnet_eq_free(lnet_eq_t *eq)
245 lnet_eq_free_locked(eq);
249 static inline lnet_libmd_t *
250 lnet_md_alloc(lnet_md_t *umd)
252 /* NEVER called with resource lock held */
253 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
256 LASSERT(LNET_CPT_NUMBER == 1);
259 md = (lnet_libmd_t *)lnet_freelist_alloc(&rec->rec_freelist);
263 INIT_LIST_HEAD(&md->md_list);
269 lnet_md_free_locked(lnet_libmd_t *md)
271 /* ALWAYS called with resource lock held */
272 struct lnet_res_container *rec = the_lnet.ln_md_containers[0];
274 LASSERT(LNET_CPT_NUMBER == 1);
275 lnet_freelist_free(&rec->rec_freelist, md);
279 lnet_md_free(lnet_libmd_t *md)
282 lnet_md_free_locked(md);
286 static inline lnet_me_t *
289 /* NEVER called with resource lock held */
290 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
293 LASSERT(LNET_CPT_NUMBER == 1);
296 me = (lnet_me_t *)lnet_freelist_alloc(&rec->rec_freelist);
303 lnet_me_free_locked(lnet_me_t *me)
305 /* ALWAYS called with resource lock held */
306 struct lnet_res_container *rec = the_lnet.ln_me_containers[0];
308 LASSERT(LNET_CPT_NUMBER == 1);
309 lnet_freelist_free(&rec->rec_freelist, me);
313 lnet_me_free(lnet_me_t *me)
316 lnet_me_free_locked(me);
320 static inline lnet_msg_t *
323 /* NEVER called with network lock held */
324 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
327 LASSERT(LNET_CPT_NUMBER == 1);
330 msg = (lnet_msg_t *)lnet_freelist_alloc(&msc->msc_freelist);
334 /* NULL pointers, clear flags etc */
335 memset(msg, 0, sizeof(*msg));
341 lnet_msg_free_locked(lnet_msg_t *msg)
343 /* ALWAYS called with network lock held */
344 struct lnet_msg_container *msc = the_lnet.ln_msg_containers[0];
346 LASSERT(LNET_CPT_NUMBER == 1);
347 LASSERT(!msg->msg_onactivelist);
348 lnet_freelist_free(&msc->msc_freelist, msg);
352 lnet_msg_free(lnet_msg_t *msg)
355 lnet_msg_free_locked(msg);
359 #else /* !LNET_USE_LIB_FREELIST */
361 static inline lnet_eq_t *
364 /* NEVER called with liblock held */
367 LIBCFS_ALLOC(eq, sizeof(*eq));
372 lnet_eq_free(lnet_eq_t *eq)
374 /* ALWAYS called with resource lock held */
375 LIBCFS_FREE(eq, sizeof(*eq));
378 static inline lnet_libmd_t *
379 lnet_md_alloc(lnet_md_t *umd)
381 /* NEVER called with liblock held */
386 if ((umd->options & LNET_MD_KIOV) != 0) {
388 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
390 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
392 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
395 LIBCFS_ALLOC(md, size);
398 /* Set here in case of early free */
399 md->md_options = umd->options;
401 INIT_LIST_HEAD(&md->md_list);
408 lnet_md_free(lnet_libmd_t *md)
410 /* ALWAYS called with resource lock held */
413 if ((md->md_options & LNET_MD_KIOV) != 0)
414 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
416 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
418 LIBCFS_FREE(md, size);
421 static inline lnet_me_t *
424 /* NEVER called with liblock held */
427 LIBCFS_ALLOC(me, sizeof(*me));
432 lnet_me_free(lnet_me_t *me)
434 /* ALWAYS called with resource lock held */
435 LIBCFS_FREE(me, sizeof(*me));
438 static inline lnet_msg_t *
441 /* NEVER called with liblock held */
444 LIBCFS_ALLOC(msg, sizeof(*msg));
446 /* no need to zero, LIBCFS_ALLOC does for us */
451 lnet_msg_free(lnet_msg_t *msg)
453 /* ALWAYS called with network lock held */
454 LASSERT(!msg->msg_onactivelist);
455 LIBCFS_FREE(msg, sizeof(*msg));
458 #define lnet_eq_free_locked(eq) lnet_eq_free(eq)
459 #define lnet_md_free_locked(md) lnet_md_free(md)
460 #define lnet_me_free_locked(me) lnet_me_free(me)
461 #define lnet_msg_free_locked(msg) lnet_msg_free(msg)
463 #endif /* LNET_USE_LIB_FREELIST */
465 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
467 void lnet_res_lh_initialize(struct lnet_res_container *rec,
468 lnet_libhandle_t *lh);
470 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
472 /* ALWAYS called with resource lock held */
473 /* NB: cookie is still useful, don't reset it */
474 list_del(&lh->lh_hash_chain);
478 lnet_eq2handle(lnet_handle_eq_t *handle, lnet_eq_t *eq)
481 LNetInvalidateHandle(handle);
485 handle->cookie = eq->eq_lh.lh_cookie;
488 static inline lnet_eq_t *
489 lnet_handle2eq(lnet_handle_eq_t *handle)
491 /* ALWAYS called with resource lock held */
492 lnet_libhandle_t *lh;
494 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
498 return lh_entry(lh, lnet_eq_t, eq_lh);
502 lnet_md2handle(lnet_handle_md_t *handle, lnet_libmd_t *md)
504 handle->cookie = md->md_lh.lh_cookie;
507 static inline lnet_libmd_t *
508 lnet_handle2md(lnet_handle_md_t *handle)
510 /* ALWAYS called with resource lock held */
511 lnet_libhandle_t *lh;
514 cpt = lnet_cpt_of_cookie(handle->cookie);
515 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
520 return lh_entry(lh, lnet_libmd_t, md_lh);
523 static inline lnet_libmd_t *
524 lnet_wire_handle2md(lnet_handle_wire_t *wh)
526 /* ALWAYS called with resource lock held */
527 lnet_libhandle_t *lh;
530 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
533 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
534 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
535 wh->wh_object_cookie);
539 return lh_entry(lh, lnet_libmd_t, md_lh);
543 lnet_me2handle(lnet_handle_me_t *handle, lnet_me_t *me)
545 handle->cookie = me->me_lh.lh_cookie;
548 static inline lnet_me_t *
549 lnet_handle2me(lnet_handle_me_t *handle)
551 /* ALWAYS called with resource lock held */
552 lnet_libhandle_t *lh;
555 cpt = lnet_cpt_of_cookie(handle->cookie);
556 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
561 return lh_entry(lh, lnet_me_t, me_lh);
565 lnet_peer_addref_locked(lnet_peer_t *lp)
567 LASSERT(lp->lp_refcount > 0);
571 void lnet_destroy_peer_locked(lnet_peer_t *lp);
574 lnet_peer_decref_locked(lnet_peer_t *lp)
576 LASSERT(lp->lp_refcount > 0);
578 if (lp->lp_refcount == 0)
579 lnet_destroy_peer_locked(lp);
583 lnet_isrouter(lnet_peer_t *lp)
585 return lp->lp_rtr_refcount != 0;
589 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
591 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
592 LASSERT(*ni->ni_refs[cpt] >= 0);
594 (*ni->ni_refs[cpt])++;
598 lnet_ni_addref(lnet_ni_t *ni)
601 lnet_ni_addref_locked(ni, 0);
606 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
608 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
609 LASSERT(*ni->ni_refs[cpt] > 0);
611 (*ni->ni_refs[cpt])--;
615 lnet_ni_decref(lnet_ni_t *ni)
618 lnet_ni_decref_locked(ni, 0);
622 void lnet_ni_free(lnet_ni_t *ni);
625 lnet_nid2peerhash(lnet_nid_t nid)
627 return hash_long(nid, LNET_PEER_HASH_BITS);
630 static inline struct list_head *
631 lnet_net2rnethash(__u32 net)
633 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
635 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
638 extern lnd_t the_lolnd;
639 extern int avoid_asym_router_failure;
641 int lnet_cpt_of_nid_locked(lnet_nid_t nid);
642 int lnet_cpt_of_nid(lnet_nid_t nid);
643 lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
644 lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
645 lnet_ni_t *lnet_net2ni(__u32 net);
647 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, unsigned long when);
648 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive,
650 int lnet_add_route(__u32 net, unsigned int hops, lnet_nid_t gateway_nid,
651 unsigned int priority);
652 int lnet_check_routes(void);
653 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
654 void lnet_destroy_routes(void);
655 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
656 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
657 void lnet_proc_init(void);
658 void lnet_proc_fini(void);
659 int lnet_rtrpools_alloc(int im_a_router);
660 void lnet_rtrpools_free(void);
661 lnet_remotenet_t *lnet_find_net_locked(__u32 net);
663 int lnet_islocalnid(lnet_nid_t nid);
664 int lnet_islocalnet(__u32 net);
666 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
667 unsigned int offset, unsigned int mlen);
668 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
669 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
670 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
671 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
672 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
674 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
675 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
676 unsigned int offset, unsigned int len);
677 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
678 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
679 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
681 /* portals functions */
682 /* portals attributes */
684 lnet_ptl_is_lazy(lnet_portal_t *ptl)
686 return !!(ptl->ptl_options & LNET_PTL_LAZY);
690 lnet_ptl_is_unique(lnet_portal_t *ptl)
692 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
696 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
698 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
702 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
704 ptl->ptl_options |= opt;
708 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
710 ptl->ptl_options &= ~opt;
713 /* match-table functions */
714 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
715 lnet_process_id_t id, __u64 mbits);
716 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
717 lnet_process_id_t id, __u64 mbits,
720 int lnet_mt_match_md(struct lnet_match_table *mtable,
721 struct lnet_match_info *info, struct lnet_msg *msg);
723 /* portals match/attach functions */
724 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
725 struct list_head *matches, struct list_head *drops);
726 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
727 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
729 /* initialized and finalize portals */
730 int lnet_portals_create(void);
731 void lnet_portals_destroy(void);
733 /* message functions */
734 int lnet_parse(lnet_ni_t *ni, lnet_hdr_t *hdr,
735 lnet_nid_t fromnid, void *private, int rdma_req);
736 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
737 unsigned int offset, unsigned int mlen, unsigned int rlen);
738 lnet_msg_t *lnet_create_reply_msg(lnet_ni_t *ni, lnet_msg_t *get_msg);
739 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
740 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
741 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
742 void lnet_recv_delayed_msg_list(struct list_head *head);
744 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
745 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
746 void lnet_msg_containers_destroy(void);
747 int lnet_msg_containers_create(void);
749 char *lnet_msgtyp2str(int type);
750 void lnet_print_hdr(lnet_hdr_t *hdr);
751 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
753 void lnet_counters_get(lnet_counters_t *counters);
754 void lnet_counters_reset(void);
756 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
757 int lnet_extract_iov(int dst_niov, struct kvec *dst,
758 int src_niov, struct kvec *src,
759 unsigned int offset, unsigned int len);
761 unsigned int lnet_kiov_nob(unsigned int niov, lnet_kiov_t *iov);
762 int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst,
763 int src_niov, lnet_kiov_t *src,
764 unsigned int offset, unsigned int len);
766 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
767 unsigned int doffset,
768 unsigned int nsiov, struct kvec *siov,
769 unsigned int soffset, unsigned int nob);
770 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
771 unsigned int iovoffset,
772 unsigned int nkiov, lnet_kiov_t *kiov,
773 unsigned int kiovoffset, unsigned int nob);
774 void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
775 unsigned int kiovoffset,
776 unsigned int niov, struct kvec *iov,
777 unsigned int iovoffset, unsigned int nob);
778 void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov,
779 unsigned int doffset,
780 unsigned int nskiov, lnet_kiov_t *skiov,
781 unsigned int soffset, unsigned int nob);
784 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
785 unsigned int nsiov, struct kvec *siov, unsigned int soffset,
788 struct kvec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
790 lnet_copy_iov2iov(1, &diov, doffset,
791 nsiov, siov, soffset, nob);
795 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
796 unsigned int nsiov, lnet_kiov_t *skiov,
797 unsigned int soffset, unsigned int nob)
799 struct kvec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
801 lnet_copy_kiov2iov(1, &diov, doffset,
802 nsiov, skiov, soffset, nob);
806 lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
807 int slen, void *src, unsigned int soffset, unsigned int nob)
809 struct kvec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
811 lnet_copy_iov2iov(ndiov, diov, doffset,
812 1, &siov, soffset, nob);
816 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov,
817 unsigned int doffset, int slen, void *src,
818 unsigned int soffset, unsigned int nob)
820 struct kvec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
822 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
823 1, &siov, soffset, nob);
826 void lnet_me_unlink(lnet_me_t *me);
828 void lnet_md_unlink(lnet_libmd_t *md);
829 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
831 void lnet_register_lnd(lnd_t *lnd);
832 void lnet_unregister_lnd(lnd_t *lnd);
833 int lnet_set_ip_niaddr(lnet_ni_t *ni);
835 int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid,
836 __u32 local_ip, __u32 peer_ip, int peer_port);
837 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
838 __u32 peer_ip, int port);
839 int lnet_count_acceptor_nis(void);
840 int lnet_acceptor_timeout(void);
841 int lnet_acceptor_port(void);
843 int lnet_count_acceptor_nis(void);
844 int lnet_acceptor_port(void);
846 int lnet_acceptor_start(void);
847 void lnet_acceptor_stop(void);
849 void lnet_get_tunables(void);
850 int lnet_peers_start_down(void);
851 int lnet_peer_buffer_credits(lnet_ni_t *ni);
853 int lnet_router_checker_start(void);
854 void lnet_router_checker_stop(void);
855 void lnet_router_ni_update_locked(lnet_peer_t *gw, __u32 net);
856 void lnet_swap_pinginfo(lnet_ping_info_t *info);
858 int lnet_ping_target_init(void);
859 void lnet_ping_target_fini(void);
860 int lnet_ping(lnet_process_id_t id, int timeout_ms,
861 lnet_process_id_t *ids, int n_ids);
863 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
864 int lnet_parse_routes(char *route_str, int *im_a_router);
865 int lnet_parse_networks(struct list_head *nilist, char *networks);
867 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
868 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
870 void lnet_peer_tables_cleanup(void);
871 void lnet_peer_tables_destroy(void);
872 int lnet_peer_tables_create(void);
873 void lnet_debug_peer(lnet_nid_t nid);
875 static inline void lnet_peer_set_alive(lnet_peer_t *lp)
877 lp->lp_last_alive = lp->lp_last_query = get_seconds();
879 lnet_notify_locked(lp, 0, 1, lp->lp_last_alive);