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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lnet/include/lnet/lib-lnet.h
34 * Top level include for library side routines
37 #ifndef __LNET_LIB_LNET_H__
38 #define __LNET_LIB_LNET_H__
41 # error This include is only for kernel use.
44 #include <libcfs/libcfs.h>
46 #include <lnet/lnet.h>
47 #include <lnet/lib-types.h>
49 extern lnet_t the_lnet; /* THE network */
51 #if (BITS_PER_LONG == 32)
52 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
53 # define LNET_CPT_MAX_BITS 1
55 #else /* 64-bit system */
57 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
58 * under risk of consuming all lh_cookie.
60 # define LNET_CPT_MAX_BITS 8
61 #endif /* BITS_PER_LONG == 32 */
63 /* max allowed CPT number */
64 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
66 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
67 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
68 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
71 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
73 static inline int lnet_is_route_alive(lnet_route_t *route)
75 if (!route->lr_gateway->lp_alive)
76 return 0; /* gateway is down */
77 if ((route->lr_gateway->lp_ping_feats &
78 LNET_PING_FEAT_NI_STATUS) == 0)
79 return 1; /* no NI status, assume it's alive */
80 /* has NI status, check # down NIs */
81 return route->lr_downis == 0;
84 static inline int lnet_is_wire_handle_none(struct lnet_handle_wire *wh)
86 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
87 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
90 static inline int lnet_md_exhausted (lnet_libmd_t *md)
92 return (md->md_threshold == 0 ||
93 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
94 md->md_offset + md->md_max_size > md->md_length));
97 static inline int lnet_md_unlinkable (lnet_libmd_t *md)
99 /* Should unlink md when its refcount is 0 and either:
100 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
101 * in the latter case md may not be exhausted).
102 * - auto unlink is on and md is exhausted.
104 if (md->md_refcount != 0)
107 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
110 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
111 lnet_md_exhausted(md));
114 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
115 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
118 lnet_cpt_of_cookie(__u64 cookie)
120 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
122 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
123 * get illegal cpt from it's invalid cookie */
124 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
128 lnet_res_lock(int cpt)
130 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
134 lnet_res_unlock(int cpt)
136 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
140 lnet_res_lock_current(void)
142 int cpt = lnet_cpt_current();
149 lnet_net_lock(int cpt)
151 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
155 lnet_net_unlock(int cpt)
157 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
161 lnet_net_lock_current(void)
163 int cpt = lnet_cpt_current();
169 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
170 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
172 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
173 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
174 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
175 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
176 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
177 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
179 #define MAX_PORTALS 64
181 #define LNET_SMALL_MD_SIZE offsetof(lnet_libmd_t, md_iov.iov[1])
182 extern struct kmem_cache *lnet_mes_cachep; /* MEs kmem_cache */
183 extern struct kmem_cache *lnet_small_mds_cachep; /* <= LNET_SMALL_MD_SIZE bytes
186 static inline lnet_eq_t *
191 LIBCFS_ALLOC(eq, sizeof(*eq));
196 lnet_eq_free(lnet_eq_t *eq)
198 LIBCFS_FREE(eq, sizeof(*eq));
201 static inline lnet_libmd_t *
202 lnet_md_alloc (lnet_md_t *umd)
208 if ((umd->options & LNET_MD_KIOV) != 0) {
210 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
212 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
214 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
217 if (size <= LNET_SMALL_MD_SIZE) {
218 md = kmem_cache_alloc(lnet_small_mds_cachep,
219 GFP_NOFS | __GFP_ZERO);
221 CDEBUG(D_MALLOC, "slab-alloced 'md' of size %u at "
224 CDEBUG(D_MALLOC, "failed to allocate 'md' of size %u\n",
229 LIBCFS_ALLOC(md, size);
233 /* Set here in case of early free */
234 md->md_options = umd->options;
236 INIT_LIST_HEAD(&md->md_list);
243 lnet_md_free(lnet_libmd_t *md)
247 if ((md->md_options & LNET_MD_KIOV) != 0)
248 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
250 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
252 if (size <= LNET_SMALL_MD_SIZE) {
253 CDEBUG(D_MALLOC, "slab-freed 'md' at %p.\n", md);
254 kmem_cache_free(lnet_small_mds_cachep, md);
256 LIBCFS_FREE(md, size);
260 static inline lnet_me_t *
265 me = kmem_cache_alloc(lnet_mes_cachep, GFP_NOFS | __GFP_ZERO);
268 CDEBUG(D_MALLOC, "slab-alloced 'me' at %p.\n", me);
270 CDEBUG(D_MALLOC, "failed to allocate 'me'\n");
276 lnet_me_free(lnet_me_t *me)
278 CDEBUG(D_MALLOC, "slab-freed 'me' at %p.\n", me);
279 kmem_cache_free(lnet_mes_cachep, me);
282 static inline lnet_msg_t *
287 LIBCFS_ALLOC(msg, sizeof(*msg));
289 /* no need to zero, LIBCFS_ALLOC does for us */
294 lnet_msg_free(lnet_msg_t *msg)
296 LASSERT(!msg->msg_onactivelist);
297 LIBCFS_FREE(msg, sizeof(*msg));
300 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
302 void lnet_res_lh_initialize(struct lnet_res_container *rec,
303 lnet_libhandle_t *lh);
305 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
307 /* ALWAYS called with resource lock held */
308 /* NB: cookie is still useful, don't reset it */
309 list_del(&lh->lh_hash_chain);
313 lnet_eq2handle (lnet_handle_eq_t *handle, lnet_eq_t *eq)
316 LNetInvalidateHandle(handle);
320 handle->cookie = eq->eq_lh.lh_cookie;
323 static inline lnet_eq_t *
324 lnet_handle2eq(lnet_handle_eq_t *handle)
326 /* ALWAYS called with resource lock held */
327 lnet_libhandle_t *lh;
329 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
333 return lh_entry(lh, lnet_eq_t, eq_lh);
337 lnet_md2handle (lnet_handle_md_t *handle, lnet_libmd_t *md)
339 handle->cookie = md->md_lh.lh_cookie;
342 static inline lnet_libmd_t *
343 lnet_handle2md(lnet_handle_md_t *handle)
345 /* ALWAYS called with resource lock held */
346 lnet_libhandle_t *lh;
349 cpt = lnet_cpt_of_cookie(handle->cookie);
350 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
355 return lh_entry(lh, lnet_libmd_t, md_lh);
358 static inline lnet_libmd_t *
359 lnet_wire_handle2md(struct lnet_handle_wire *wh)
361 /* ALWAYS called with resource lock held */
362 lnet_libhandle_t *lh;
365 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
368 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
369 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
370 wh->wh_object_cookie);
374 return lh_entry(lh, lnet_libmd_t, md_lh);
378 lnet_me2handle (lnet_handle_me_t *handle, lnet_me_t *me)
380 handle->cookie = me->me_lh.lh_cookie;
383 static inline lnet_me_t *
384 lnet_handle2me(lnet_handle_me_t *handle)
386 /* ALWAYS called with resource lock held */
387 lnet_libhandle_t *lh;
390 cpt = lnet_cpt_of_cookie(handle->cookie);
391 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
396 return lh_entry(lh, lnet_me_t, me_lh);
400 lnet_peer_addref_locked(lnet_peer_t *lp)
402 LASSERT(lp->lp_refcount > 0);
406 extern void lnet_destroy_peer_locked(lnet_peer_t *lp);
409 lnet_peer_decref_locked(lnet_peer_t *lp)
411 LASSERT(lp->lp_refcount > 0);
413 if (lp->lp_refcount == 0)
414 lnet_destroy_peer_locked(lp);
418 lnet_isrouter(lnet_peer_t *lp)
420 return lp->lp_rtr_refcount != 0;
424 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
426 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
427 LASSERT(*ni->ni_refs[cpt] >= 0);
429 (*ni->ni_refs[cpt])++;
433 lnet_ni_addref(lnet_ni_t *ni)
436 lnet_ni_addref_locked(ni, 0);
441 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
443 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
444 LASSERT(*ni->ni_refs[cpt] > 0);
446 (*ni->ni_refs[cpt])--;
450 lnet_ni_decref(lnet_ni_t *ni)
453 lnet_ni_decref_locked(ni, 0);
457 void lnet_ni_free(lnet_ni_t *ni);
459 lnet_ni_alloc(__u32 net, struct cfs_expr_list *el, struct list_head *nilist);
462 lnet_nid2peerhash(lnet_nid_t nid)
464 return hash_long(nid, LNET_PEER_HASH_BITS);
467 static inline struct list_head *
468 lnet_net2rnethash(__u32 net)
470 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
472 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
475 extern lnd_t the_lolnd;
476 extern int avoid_asym_router_failure;
478 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid);
479 extern int lnet_cpt_of_nid(lnet_nid_t nid);
480 extern lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
481 extern lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
482 extern lnet_ni_t *lnet_net2ni(__u32 net);
484 int lnet_lib_init(void);
485 void lnet_lib_exit(void);
487 extern int portal_rotor;
489 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, cfs_time_t when);
490 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when);
491 int lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway_nid,
492 unsigned int priority);
493 int lnet_check_routes(void);
494 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
495 void lnet_destroy_routes(void);
496 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
497 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
498 int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg);
500 struct libcfs_ioctl_handler {
501 struct list_head item;
502 int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_hdr *hdr);
505 #define DECLARE_IOCTL_HANDLER(ident, func) \
506 static struct libcfs_ioctl_handler ident = { \
507 /* .item = */ LIST_HEAD_INIT(ident.item), \
508 /* .handle_ioctl = */ func \
511 extern int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
512 extern int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
513 extern int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
514 struct libcfs_ioctl_hdr __user *uparam);
516 void lnet_proc_init(void);
517 void lnet_proc_fini(void);
518 int lnet_rtrpools_alloc(int im_a_router);
519 void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages);
520 int lnet_rtrpools_adjust(int tiny, int small, int large);
521 int lnet_rtrpools_enable(void);
522 void lnet_rtrpools_disable(void);
523 void lnet_rtrpools_free(int keep_pools);
524 lnet_remotenet_t *lnet_find_net_locked (__u32 net);
525 int lnet_dyn_add_ni(lnet_pid_t requested_pid,
526 struct lnet_ioctl_config_data *conf);
527 int lnet_dyn_del_ni(__u32 net);
528 int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason);
530 int lnet_islocalnid(lnet_nid_t nid);
531 int lnet_islocalnet(__u32 net);
533 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
534 unsigned int offset, unsigned int mlen);
535 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
536 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
537 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
538 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
539 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
541 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
542 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
543 unsigned int offset, unsigned int len);
544 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
545 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
546 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
547 void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp);
548 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
550 /* portals functions */
551 /* portals attributes */
553 lnet_ptl_is_lazy(lnet_portal_t *ptl)
555 return !!(ptl->ptl_options & LNET_PTL_LAZY);
559 lnet_ptl_is_unique(lnet_portal_t *ptl)
561 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
565 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
567 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
571 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
573 ptl->ptl_options |= opt;
577 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
579 ptl->ptl_options &= ~opt;
582 /* match-table functions */
583 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
584 lnet_process_id_t id, __u64 mbits);
585 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
586 lnet_process_id_t id, __u64 mbits,
589 int lnet_mt_match_md(struct lnet_match_table *mtable,
590 struct lnet_match_info *info, struct lnet_msg *msg);
592 /* portals match/attach functions */
593 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
594 struct list_head *matches, struct list_head *drops);
595 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
596 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
598 /* initialized and finalize portals */
599 int lnet_portals_create(void);
600 void lnet_portals_destroy(void);
602 /* message functions */
603 int lnet_parse (lnet_ni_t *ni, lnet_hdr_t *hdr,
604 lnet_nid_t fromnid, void *private, int rdma_req);
605 int lnet_parse_local(lnet_ni_t *ni, lnet_msg_t *msg);
606 int lnet_parse_forward_locked(lnet_ni_t *ni, lnet_msg_t *msg);
608 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
609 unsigned int offset, unsigned int mlen, unsigned int rlen);
610 void lnet_ni_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg,
611 int delayed, unsigned int offset,
612 unsigned int mlen, unsigned int rlen);
614 lnet_msg_t *lnet_create_reply_msg (lnet_ni_t *ni, lnet_msg_t *get_msg);
615 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
617 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
619 void lnet_drop_message(lnet_ni_t *ni, int cpt, void *private,
621 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
622 void lnet_recv_delayed_msg_list(struct list_head *head);
624 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
625 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
626 void lnet_msg_containers_destroy(void);
627 int lnet_msg_containers_create(void);
629 char *lnet_msgtyp2str (int type);
630 void lnet_print_hdr (lnet_hdr_t * hdr);
631 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
633 /** \addtogroup lnet_fault_simulation @{ */
635 int lnet_fault_ctl(int cmd, struct libcfs_ioctl_data *data);
636 int lnet_fault_init(void);
637 void lnet_fault_fini(void);
639 bool lnet_drop_rule_match(lnet_hdr_t *hdr);
641 int lnet_delay_rule_add(struct lnet_fault_attr *attr);
642 int lnet_delay_rule_del(lnet_nid_t src, lnet_nid_t dst, bool shutdown);
643 int lnet_delay_rule_list(int pos, struct lnet_fault_attr *attr,
644 struct lnet_fault_stat *stat);
645 void lnet_delay_rule_reset(void);
646 void lnet_delay_rule_check(void);
647 bool lnet_delay_rule_match_locked(lnet_hdr_t *hdr, struct lnet_msg *msg);
649 /** @} lnet_fault_simulation */
651 void lnet_counters_get(lnet_counters_t *counters);
652 void lnet_counters_reset(void);
654 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
655 int lnet_extract_iov(int dst_niov, struct kvec *dst,
656 int src_niov, struct kvec *src,
657 unsigned int offset, unsigned int len);
659 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
660 int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst,
661 int src_niov, lnet_kiov_t *src,
662 unsigned int offset, unsigned int len);
664 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
665 unsigned int doffset,
666 unsigned int nsiov, struct kvec *siov,
667 unsigned int soffset, unsigned int nob);
668 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
669 unsigned int iovoffset,
670 unsigned int nkiov, lnet_kiov_t *kiov,
671 unsigned int kiovoffset, unsigned int nob);
672 void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
673 unsigned int kiovoffset,
674 unsigned int niov, struct kvec *iov,
675 unsigned int iovoffset, unsigned int nob);
676 void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov,
677 unsigned int doffset,
678 unsigned int nskiov, lnet_kiov_t *skiov,
679 unsigned int soffset, unsigned int nob);
682 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
683 unsigned int nsiov, struct kvec *siov, unsigned int soffset,
686 struct kvec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
688 lnet_copy_iov2iov(1, &diov, doffset,
689 nsiov, siov, soffset, nob);
693 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
694 unsigned int nsiov, lnet_kiov_t *skiov,
695 unsigned int soffset, unsigned int nob)
697 struct kvec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
699 lnet_copy_kiov2iov(1, &diov, doffset,
700 nsiov, skiov, soffset, nob);
704 lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
705 int slen, void *src, unsigned int soffset,
708 struct kvec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
709 lnet_copy_iov2iov(ndiov, diov, doffset,
710 1, &siov, soffset, nob);
714 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov,
715 unsigned int doffset, int slen, void *src,
716 unsigned int soffset, unsigned int nob)
718 struct kvec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
719 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
720 1, &siov, soffset, nob);
723 void lnet_me_unlink(lnet_me_t *me);
725 void lnet_md_unlink(lnet_libmd_t *md);
726 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
728 void lnet_register_lnd(lnd_t *lnd);
729 void lnet_unregister_lnd(lnd_t *lnd);
731 int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid,
732 __u32 local_ip, __u32 peer_ip, int peer_port);
733 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
734 __u32 peer_ip, int port);
735 int lnet_count_acceptor_nis(void);
736 int lnet_acceptor_timeout(void);
737 int lnet_acceptor_port(void);
738 int lnet_acceptor_start(void);
739 void lnet_acceptor_stop(void);
741 int lnet_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
742 int lnet_ipif_enumerate(char ***names);
743 void lnet_ipif_free_enumeration(char **names, int n);
744 int lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
745 int lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
746 int lnet_sock_getaddr(struct socket *socket, bool remote, __u32 *ip, int *port);
747 int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
748 int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
750 int lnet_sock_listen(struct socket **sockp, __u32 ip, int port, int backlog);
751 int lnet_sock_accept(struct socket **newsockp, struct socket *sock);
752 int lnet_sock_connect(struct socket **sockp, int *fatal,
753 __u32 local_ip, int local_port,
754 __u32 peer_ip, int peer_port);
756 int lnet_peers_start_down(void);
757 int lnet_peer_buffer_credits(lnet_ni_t *ni);
759 int lnet_router_checker_start(void);
760 void lnet_router_checker_stop(void);
761 void lnet_router_ni_update_locked(lnet_peer_t *gw, __u32 net);
762 void lnet_swap_pinginfo(struct lnet_ping_info *info);
764 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
765 int lnet_parse_routes(char *route_str, int *im_a_router);
766 int lnet_parse_networks(struct list_head *nilist, char *networks);
767 int lnet_net_unique(__u32 net, struct list_head *nilist);
769 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
770 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
772 void lnet_peer_tables_cleanup(lnet_ni_t *ni);
773 void lnet_peer_tables_destroy(void);
774 int lnet_peer_tables_create(void);
775 void lnet_debug_peer(lnet_nid_t nid);
776 int lnet_get_peer_info(__u32 peer_index, __u64 *nid,
777 char alivness[LNET_MAX_STR_LEN],
778 __u32 *cpt_iter, __u32 *refcount,
779 __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits,
780 __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis,
781 __u32 *peer_tx_qnob);
784 lnet_peer_set_alive(lnet_peer_t *lp)
786 lp->lp_last_alive = lp->lp_last_query = cfs_time_current();
788 lnet_notify_locked(lp, 0, 1, lp->lp_last_alive);