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, 2015, 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__
45 # error This include is only for kernel use.
48 #include <libcfs/libcfs.h>
50 #include <lnet/lnet.h>
51 #include <lnet/lib-types.h>
53 extern lnet_t the_lnet; /* THE network */
55 #if (BITS_PER_LONG == 32)
56 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
57 # define LNET_CPT_MAX_BITS 1
59 #else /* 64-bit system */
61 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
62 * under risk of consuming all lh_cookie.
64 # define LNET_CPT_MAX_BITS 8
65 #endif /* BITS_PER_LONG == 32 */
67 /* max allowed CPT number */
68 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
70 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
71 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
72 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
75 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
77 static inline int lnet_is_route_alive(lnet_route_t *route)
79 if (!route->lr_gateway->lp_alive)
80 return 0; /* gateway is down */
81 if ((route->lr_gateway->lp_ping_feats &
82 LNET_PING_FEAT_NI_STATUS) == 0)
83 return 1; /* no NI status, assume it's alive */
84 /* has NI status, check # down NIs */
85 return route->lr_downis == 0;
88 static inline int lnet_is_wire_handle_none (lnet_handle_wire_t *wh)
90 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
91 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
94 static inline int lnet_md_exhausted (lnet_libmd_t *md)
96 return (md->md_threshold == 0 ||
97 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
98 md->md_offset + md->md_max_size > md->md_length));
101 static inline int lnet_md_unlinkable (lnet_libmd_t *md)
103 /* Should unlink md when its refcount is 0 and either:
104 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
105 * in the latter case md may not be exhausted).
106 * - auto unlink is on and md is exhausted.
108 if (md->md_refcount != 0)
111 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
114 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
115 lnet_md_exhausted(md));
118 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
119 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
122 lnet_cpt_of_cookie(__u64 cookie)
124 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
126 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
127 * get illegal cpt from it's invalid cookie */
128 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
132 lnet_res_lock(int cpt)
134 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
138 lnet_res_unlock(int cpt)
140 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
144 lnet_res_lock_current(void)
146 int cpt = lnet_cpt_current();
153 lnet_net_lock(int cpt)
155 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
159 lnet_net_unlock(int cpt)
161 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
165 lnet_net_lock_current(void)
167 int cpt = lnet_cpt_current();
173 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
174 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
176 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
177 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
178 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
179 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
180 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
181 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
183 #define MAX_PORTALS 64
185 #define LNET_SMALL_MD_SIZE offsetof(lnet_libmd_t, md_iov.iov[1])
186 extern struct kmem_cache *lnet_mes_cachep; /* MEs kmem_cache */
187 extern struct kmem_cache *lnet_small_mds_cachep; /* <= LNET_SMALL_MD_SIZE bytes
190 static inline lnet_eq_t *
195 LIBCFS_ALLOC(eq, sizeof(*eq));
200 lnet_eq_free(lnet_eq_t *eq)
202 LIBCFS_FREE(eq, sizeof(*eq));
205 static inline lnet_libmd_t *
206 lnet_md_alloc (lnet_md_t *umd)
212 if ((umd->options & LNET_MD_KIOV) != 0) {
214 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
216 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
218 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
221 if (size <= LNET_SMALL_MD_SIZE) {
222 md = kmem_cache_alloc(lnet_small_mds_cachep,
223 GFP_NOFS | __GFP_ZERO);
225 CDEBUG(D_MALLOC, "slab-alloced 'md' of size %u at "
228 CDEBUG(D_MALLOC, "failed to allocate 'md' of size %u\n",
233 LIBCFS_ALLOC(md, size);
237 /* Set here in case of early free */
238 md->md_options = umd->options;
240 INIT_LIST_HEAD(&md->md_list);
247 lnet_md_free(lnet_libmd_t *md)
251 if ((md->md_options & LNET_MD_KIOV) != 0)
252 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
254 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
256 if (size <= LNET_SMALL_MD_SIZE) {
257 CDEBUG(D_MALLOC, "slab-freed 'md' at %p.\n", md);
258 kmem_cache_free(lnet_small_mds_cachep, md);
260 LIBCFS_FREE(md, size);
264 static inline lnet_me_t *
269 me = kmem_cache_alloc(lnet_mes_cachep, GFP_NOFS | __GFP_ZERO);
272 CDEBUG(D_MALLOC, "slab-alloced 'me' at %p.\n", me);
274 CDEBUG(D_MALLOC, "failed to allocate 'me'\n");
280 lnet_me_free(lnet_me_t *me)
282 CDEBUG(D_MALLOC, "slab-freed 'me' at %p.\n", me);
283 kmem_cache_free(lnet_mes_cachep, me);
286 static inline lnet_msg_t *
291 LIBCFS_ALLOC(msg, sizeof(*msg));
293 /* no need to zero, LIBCFS_ALLOC does for us */
298 lnet_msg_free(lnet_msg_t *msg)
300 LASSERT(!msg->msg_onactivelist);
301 LIBCFS_FREE(msg, sizeof(*msg));
304 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
306 void lnet_res_lh_initialize(struct lnet_res_container *rec,
307 lnet_libhandle_t *lh);
309 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
311 /* ALWAYS called with resource lock held */
312 /* NB: cookie is still useful, don't reset it */
313 list_del(&lh->lh_hash_chain);
317 lnet_eq2handle (lnet_handle_eq_t *handle, lnet_eq_t *eq)
320 LNetInvalidateHandle(handle);
324 handle->cookie = eq->eq_lh.lh_cookie;
327 static inline lnet_eq_t *
328 lnet_handle2eq(lnet_handle_eq_t *handle)
330 /* ALWAYS called with resource lock held */
331 lnet_libhandle_t *lh;
333 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
337 return lh_entry(lh, lnet_eq_t, eq_lh);
341 lnet_md2handle (lnet_handle_md_t *handle, lnet_libmd_t *md)
343 handle->cookie = md->md_lh.lh_cookie;
346 static inline lnet_libmd_t *
347 lnet_handle2md(lnet_handle_md_t *handle)
349 /* ALWAYS called with resource lock held */
350 lnet_libhandle_t *lh;
353 cpt = lnet_cpt_of_cookie(handle->cookie);
354 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
359 return lh_entry(lh, lnet_libmd_t, md_lh);
362 static inline lnet_libmd_t *
363 lnet_wire_handle2md(lnet_handle_wire_t *wh)
365 /* ALWAYS called with resource lock held */
366 lnet_libhandle_t *lh;
369 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
372 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
373 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
374 wh->wh_object_cookie);
378 return lh_entry(lh, lnet_libmd_t, md_lh);
382 lnet_me2handle (lnet_handle_me_t *handle, lnet_me_t *me)
384 handle->cookie = me->me_lh.lh_cookie;
387 static inline lnet_me_t *
388 lnet_handle2me(lnet_handle_me_t *handle)
390 /* ALWAYS called with resource lock held */
391 lnet_libhandle_t *lh;
394 cpt = lnet_cpt_of_cookie(handle->cookie);
395 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
400 return lh_entry(lh, lnet_me_t, me_lh);
404 lnet_peer_addref_locked(lnet_peer_t *lp)
406 LASSERT (lp->lp_refcount > 0);
410 extern void lnet_destroy_peer_locked(lnet_peer_t *lp);
413 lnet_peer_decref_locked(lnet_peer_t *lp)
415 LASSERT (lp->lp_refcount > 0);
417 if (lp->lp_refcount == 0)
418 lnet_destroy_peer_locked(lp);
422 lnet_isrouter(lnet_peer_t *lp)
424 return lp->lp_rtr_refcount != 0;
428 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
430 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
431 LASSERT(*ni->ni_refs[cpt] >= 0);
433 (*ni->ni_refs[cpt])++;
437 lnet_ni_addref(lnet_ni_t *ni)
440 lnet_ni_addref_locked(ni, 0);
445 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
447 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
448 LASSERT(*ni->ni_refs[cpt] > 0);
450 (*ni->ni_refs[cpt])--;
454 lnet_ni_decref(lnet_ni_t *ni)
457 lnet_ni_decref_locked(ni, 0);
461 void lnet_ni_free(lnet_ni_t *ni);
463 lnet_ni_alloc(__u32 net, struct cfs_expr_list *el, struct list_head *nilist);
466 lnet_nid2peerhash(lnet_nid_t nid)
468 return hash_long(nid, LNET_PEER_HASH_BITS);
471 static inline struct list_head *
472 lnet_net2rnethash(__u32 net)
474 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
476 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
479 extern lnd_t the_lolnd;
480 extern int avoid_asym_router_failure;
482 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid);
483 extern int lnet_cpt_of_nid(lnet_nid_t nid);
484 extern lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
485 extern lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
486 extern lnet_ni_t *lnet_net2ni(__u32 net);
488 int lnet_lib_init(void);
489 void lnet_lib_exit(void);
491 extern int portal_rotor;
493 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, cfs_time_t when);
494 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive, cfs_time_t when);
495 int lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway_nid,
496 unsigned int priority);
497 int lnet_check_routes(void);
498 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
499 void lnet_destroy_routes(void);
500 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
501 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
502 int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg);
504 struct libcfs_ioctl_handler {
505 struct list_head item;
506 int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_hdr *hdr);
509 #define DECLARE_IOCTL_HANDLER(ident, func) \
510 static struct libcfs_ioctl_handler ident = { \
511 /* .item = */ LIST_HEAD_INIT(ident.item), \
512 /* .handle_ioctl = */ func \
515 extern int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
516 extern int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
517 extern int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
518 struct libcfs_ioctl_hdr __user *uparam);
520 void lnet_proc_init(void);
521 void lnet_proc_fini(void);
522 int lnet_rtrpools_alloc(int im_a_router);
523 void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages);
524 int lnet_rtrpools_adjust(int tiny, int small, int large);
525 int lnet_rtrpools_enable(void);
526 void lnet_rtrpools_disable(void);
527 void lnet_rtrpools_free(int keep_pools);
528 lnet_remotenet_t *lnet_find_net_locked (__u32 net);
529 int lnet_dyn_add_ni(lnet_pid_t requested_pid,
530 struct lnet_ioctl_config_data *conf);
531 int lnet_dyn_del_ni(__u32 net);
532 int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason);
534 int lnet_islocalnid(lnet_nid_t nid);
535 int lnet_islocalnet(__u32 net);
537 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
538 unsigned int offset, unsigned int mlen);
539 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
540 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
541 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
542 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
543 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
545 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
546 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
547 unsigned int offset, unsigned int len);
548 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
549 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
550 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
551 void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp);
552 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
554 /* portals functions */
555 /* portals attributes */
557 lnet_ptl_is_lazy(lnet_portal_t *ptl)
559 return !!(ptl->ptl_options & LNET_PTL_LAZY);
563 lnet_ptl_is_unique(lnet_portal_t *ptl)
565 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
569 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
571 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
575 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
577 ptl->ptl_options |= opt;
581 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
583 ptl->ptl_options &= ~opt;
586 /* match-table functions */
587 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
588 lnet_process_id_t id, __u64 mbits);
589 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
590 lnet_process_id_t id, __u64 mbits,
593 int lnet_mt_match_md(struct lnet_match_table *mtable,
594 struct lnet_match_info *info, struct lnet_msg *msg);
596 /* portals match/attach functions */
597 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
598 struct list_head *matches, struct list_head *drops);
599 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
600 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
602 /* initialized and finalize portals */
603 int lnet_portals_create(void);
604 void lnet_portals_destroy(void);
606 /* message functions */
607 int lnet_parse (lnet_ni_t *ni, lnet_hdr_t *hdr,
608 lnet_nid_t fromnid, void *private, int rdma_req);
609 int lnet_parse_local(lnet_ni_t *ni, lnet_msg_t *msg);
610 int lnet_parse_forward_locked(lnet_ni_t *ni, lnet_msg_t *msg);
612 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
613 unsigned int offset, unsigned int mlen, unsigned int rlen);
614 void lnet_ni_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg,
615 int delayed, unsigned int offset,
616 unsigned int mlen, unsigned int rlen);
618 lnet_msg_t *lnet_create_reply_msg (lnet_ni_t *ni, lnet_msg_t *get_msg);
619 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
621 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
623 void lnet_drop_message(lnet_ni_t *ni, int cpt, void *private,
625 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
626 void lnet_recv_delayed_msg_list(struct list_head *head);
628 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
629 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
630 void lnet_msg_containers_destroy(void);
631 int lnet_msg_containers_create(void);
633 char *lnet_msgtyp2str (int type);
634 void lnet_print_hdr (lnet_hdr_t * hdr);
635 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
637 /** \addtogroup lnet_fault_simulation @{ */
639 int lnet_fault_ctl(int cmd, struct libcfs_ioctl_data *data);
640 int lnet_fault_init(void);
641 void lnet_fault_fini(void);
643 bool lnet_drop_rule_match(lnet_hdr_t *hdr);
645 int lnet_delay_rule_add(struct lnet_fault_attr *attr);
646 int lnet_delay_rule_del(lnet_nid_t src, lnet_nid_t dst, bool shutdown);
647 int lnet_delay_rule_list(int pos, struct lnet_fault_attr *attr,
648 struct lnet_fault_stat *stat);
649 void lnet_delay_rule_reset(void);
650 void lnet_delay_rule_check(void);
651 bool lnet_delay_rule_match_locked(lnet_hdr_t *hdr, struct lnet_msg *msg);
653 /** @} lnet_fault_simulation */
655 void lnet_counters_get(lnet_counters_t *counters);
656 void lnet_counters_reset(void);
658 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
659 int lnet_extract_iov(int dst_niov, struct kvec *dst,
660 int src_niov, struct kvec *src,
661 unsigned int offset, unsigned int len);
663 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
664 int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst,
665 int src_niov, lnet_kiov_t *src,
666 unsigned int offset, unsigned int len);
668 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
669 unsigned int doffset,
670 unsigned int nsiov, struct kvec *siov,
671 unsigned int soffset, unsigned int nob);
672 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
673 unsigned int iovoffset,
674 unsigned int nkiov, lnet_kiov_t *kiov,
675 unsigned int kiovoffset, unsigned int nob);
676 void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
677 unsigned int kiovoffset,
678 unsigned int niov, struct kvec *iov,
679 unsigned int iovoffset, unsigned int nob);
680 void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov,
681 unsigned int doffset,
682 unsigned int nskiov, lnet_kiov_t *skiov,
683 unsigned int soffset, unsigned int nob);
686 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
687 unsigned int nsiov, struct kvec *siov, unsigned int soffset,
690 struct kvec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
692 lnet_copy_iov2iov(1, &diov, doffset,
693 nsiov, siov, soffset, nob);
697 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
698 unsigned int nsiov, lnet_kiov_t *skiov,
699 unsigned int soffset, unsigned int nob)
701 struct kvec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
703 lnet_copy_kiov2iov(1, &diov, doffset,
704 nsiov, skiov, soffset, nob);
708 lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
709 int slen, void *src, unsigned int soffset,
712 struct kvec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
713 lnet_copy_iov2iov(ndiov, diov, doffset,
714 1, &siov, soffset, nob);
718 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov,
719 unsigned int doffset, int slen, void *src,
720 unsigned int soffset, unsigned int nob)
722 struct kvec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
723 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
724 1, &siov, soffset, nob);
727 void lnet_me_unlink(lnet_me_t *me);
729 void lnet_md_unlink(lnet_libmd_t *md);
730 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
732 void lnet_register_lnd(lnd_t *lnd);
733 void lnet_unregister_lnd(lnd_t *lnd);
735 int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid,
736 __u32 local_ip, __u32 peer_ip, int peer_port);
737 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
738 __u32 peer_ip, int port);
739 int lnet_count_acceptor_nis(void);
740 int lnet_acceptor_timeout(void);
741 int lnet_acceptor_port(void);
742 int lnet_acceptor_start(void);
743 void lnet_acceptor_stop(void);
745 int lnet_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
746 int lnet_ipif_enumerate(char ***names);
747 void lnet_ipif_free_enumeration(char **names, int n);
748 int lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
749 int lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
750 int lnet_sock_getaddr(struct socket *socket, bool remote, __u32 *ip, int *port);
751 int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
752 int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
754 int lnet_sock_listen(struct socket **sockp, __u32 ip, int port, int backlog);
755 int lnet_sock_accept(struct socket **newsockp, struct socket *sock);
756 int lnet_sock_connect(struct socket **sockp, int *fatal,
757 __u32 local_ip, int local_port,
758 __u32 peer_ip, int peer_port);
760 int lnet_peers_start_down(void);
761 int lnet_peer_buffer_credits(lnet_ni_t *ni);
763 int lnet_router_checker_start(void);
764 void lnet_router_checker_stop(void);
765 void lnet_router_ni_update_locked(lnet_peer_t *gw, __u32 net);
766 void lnet_swap_pinginfo(lnet_ping_info_t *info);
768 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
769 int lnet_parse_routes(char *route_str, int *im_a_router);
770 int lnet_parse_networks(struct list_head *nilist, char *networks);
771 int lnet_net_unique(__u32 net, struct list_head *nilist);
773 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
774 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
776 void lnet_peer_tables_cleanup(lnet_ni_t *ni);
777 void lnet_peer_tables_destroy(void);
778 int lnet_peer_tables_create(void);
779 void lnet_debug_peer(lnet_nid_t nid);
780 int lnet_get_peer_info(__u32 peer_index, __u64 *nid,
781 char alivness[LNET_MAX_STR_LEN],
782 __u32 *cpt_iter, __u32 *refcount,
783 __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits,
784 __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis,
785 __u32 *peer_tx_qnob);
788 lnet_peer_set_alive(lnet_peer_t *lp)
790 lp->lp_last_alive = lp->lp_last_query = cfs_time_current();
792 lnet_notify_locked(lp, 0, 1, lp->lp_last_alive);