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 struct lnet 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(struct lnet_route *route)
75 if (!route->lr_gateway->lpni_alive)
76 return 0; /* gateway is down */
77 if ((route->lr_gateway->lpni_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(struct lnet_libmd *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(struct lnet_libmd *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(struct lnet_libmd, 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 struct lnet_eq *
191 LIBCFS_ALLOC(eq, sizeof(*eq));
196 lnet_eq_free(struct lnet_eq *eq)
198 LIBCFS_FREE(eq, sizeof(*eq));
201 static inline struct lnet_libmd *
202 lnet_md_alloc(struct lnet_md *umd)
204 struct lnet_libmd *md;
208 if ((umd->options & LNET_MD_KIOV) != 0) {
210 size = offsetof(struct lnet_libmd, md_iov.kiov[niov]);
212 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
214 size = offsetof(struct lnet_libmd, 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(struct lnet_libmd *md)
247 if ((md->md_options & LNET_MD_KIOV) != 0)
248 size = offsetof(struct lnet_libmd, md_iov.kiov[md->md_niov]);
250 size = offsetof(struct lnet_libmd, 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 struct lnet_me *
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(struct lnet_me *me)
278 CDEBUG(D_MALLOC, "slab-freed 'me' at %p.\n", me);
279 kmem_cache_free(lnet_mes_cachep, me);
282 struct lnet_libhandle *lnet_res_lh_lookup(struct lnet_res_container *rec,
284 void lnet_res_lh_initialize(struct lnet_res_container *rec,
285 struct lnet_libhandle *lh);
287 lnet_res_lh_invalidate(struct lnet_libhandle *lh)
289 /* ALWAYS called with resource lock held */
290 /* NB: cookie is still useful, don't reset it */
291 list_del(&lh->lh_hash_chain);
295 lnet_eq2handle(struct lnet_handle_eq *handle, struct lnet_eq *eq)
298 LNetInvalidateEQHandle(handle);
302 handle->cookie = eq->eq_lh.lh_cookie;
305 static inline struct lnet_eq *
306 lnet_handle2eq(struct lnet_handle_eq *handle)
308 /* ALWAYS called with resource lock held */
309 struct lnet_libhandle *lh;
311 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
315 return lh_entry(lh, struct lnet_eq, eq_lh);
319 lnet_md2handle(struct lnet_handle_md *handle, struct lnet_libmd *md)
321 handle->cookie = md->md_lh.lh_cookie;
324 static inline struct lnet_libmd *
325 lnet_handle2md(struct lnet_handle_md *handle)
327 /* ALWAYS called with resource lock held */
328 struct lnet_libhandle *lh;
331 cpt = lnet_cpt_of_cookie(handle->cookie);
332 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
337 return lh_entry(lh, struct lnet_libmd, md_lh);
340 static inline struct lnet_libmd *
341 lnet_wire_handle2md(struct lnet_handle_wire *wh)
343 /* ALWAYS called with resource lock held */
344 struct lnet_libhandle *lh;
347 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
350 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
351 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
352 wh->wh_object_cookie);
356 return lh_entry(lh, struct lnet_libmd, md_lh);
360 lnet_me2handle(struct lnet_handle_me *handle, struct lnet_me *me)
362 handle->cookie = me->me_lh.lh_cookie;
365 static inline struct lnet_me *
366 lnet_handle2me(struct lnet_handle_me *handle)
368 /* ALWAYS called with resource lock held */
369 struct lnet_libhandle *lh;
372 cpt = lnet_cpt_of_cookie(handle->cookie);
373 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
378 return lh_entry(lh, struct lnet_me, me_lh);
382 lnet_peer_ni_addref_locked(struct lnet_peer_ni *lp)
384 LASSERT (atomic_read(&lp->lpni_refcount) > 0);
385 atomic_inc(&lp->lpni_refcount);
388 extern void lnet_destroy_peer_ni_locked(struct lnet_peer_ni *lp);
391 lnet_peer_ni_decref_locked(struct lnet_peer_ni *lp)
393 LASSERT (atomic_read(&lp->lpni_refcount) > 0);
394 atomic_dec(&lp->lpni_refcount);
395 if (atomic_read(&lp->lpni_refcount) == 0)
396 lnet_destroy_peer_ni_locked(lp);
400 lnet_isrouter(struct lnet_peer_ni *lp)
402 return lp->lpni_rtr_refcount != 0;
406 lnet_ni_addref_locked(struct lnet_ni *ni, int cpt)
408 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
409 LASSERT(*ni->ni_refs[cpt] >= 0);
411 (*ni->ni_refs[cpt])++;
415 lnet_ni_addref(struct lnet_ni *ni)
418 lnet_ni_addref_locked(ni, 0);
423 lnet_ni_decref_locked(struct lnet_ni *ni, int cpt)
425 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
426 LASSERT(*ni->ni_refs[cpt] > 0);
428 (*ni->ni_refs[cpt])--;
432 lnet_ni_decref(struct lnet_ni *ni)
435 lnet_ni_decref_locked(ni, 0);
439 static inline struct lnet_msg *
442 struct lnet_msg *msg;
444 LIBCFS_ALLOC(msg, sizeof(*msg));
446 /* no need to zero, LIBCFS_ALLOC does for us */
451 lnet_msg_free(struct lnet_msg *msg)
453 LASSERT(!msg->msg_onactivelist);
454 LIBCFS_FREE(msg, sizeof(*msg));
457 void lnet_ni_free(struct lnet_ni *ni);
458 void lnet_net_free(struct lnet_net *net);
461 lnet_net_alloc(__u32 net_type, struct list_head *netlist);
464 lnet_ni_alloc(struct lnet_net *net, struct cfs_expr_list *el,
467 lnet_ni_alloc_w_cpt_array(struct lnet_net *net, __u32 *cpts, __u32 ncpts,
471 lnet_nid2peerhash(lnet_nid_t nid)
473 return hash_long(nid, LNET_PEER_HASH_BITS);
476 static inline struct list_head *
477 lnet_net2rnethash(__u32 net)
479 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
481 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
484 extern struct lnet_lnd the_lolnd;
485 extern int avoid_asym_router_failure;
487 extern unsigned int lnet_nid_cpt_hash(lnet_nid_t nid, unsigned int number);
488 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid, struct lnet_ni *ni);
489 extern int lnet_cpt_of_nid(lnet_nid_t nid, struct lnet_ni *ni);
490 extern struct lnet_ni *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
491 extern struct lnet_ni *lnet_nid2ni_addref(lnet_nid_t nid);
492 extern struct lnet_ni *lnet_net2ni_locked(__u32 net, int cpt);
493 extern struct lnet_ni *lnet_net2ni_addref(__u32 net);
494 bool lnet_is_ni_healthy_locked(struct lnet_ni *ni);
495 struct lnet_net *lnet_get_net_locked(__u32 net_id);
497 int lnet_lib_init(void);
498 void lnet_lib_exit(void);
500 extern unsigned int lnet_numa_range;
501 extern int portal_rotor;
503 int lnet_notify(struct lnet_ni *ni, lnet_nid_t peer, int alive,
505 void lnet_notify_locked(struct lnet_peer_ni *lp, int notifylnd, int alive,
507 int lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway_nid,
508 unsigned int priority);
509 int lnet_check_routes(void);
510 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
511 void lnet_destroy_routes(void);
512 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
513 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
514 int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg);
515 struct lnet_ni *lnet_get_next_ni_locked(struct lnet_net *mynet,
516 struct lnet_ni *prev);
517 struct lnet_ni *lnet_get_ni_idx_locked(int idx);
519 struct libcfs_ioctl_handler {
520 struct list_head item;
521 int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_hdr *hdr);
524 #define DECLARE_IOCTL_HANDLER(ident, func) \
525 static struct libcfs_ioctl_handler ident = { \
526 .item = LIST_HEAD_INIT(ident.item), \
527 .handle_ioctl = func \
530 extern int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
531 extern int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
532 extern int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
533 struct libcfs_ioctl_hdr __user *uparam);
535 void lnet_proc_init(void);
536 void lnet_proc_fini(void);
537 int lnet_rtrpools_alloc(int im_a_router);
538 void lnet_destroy_rtrbuf(struct lnet_rtrbuf *rb, int npages);
539 int lnet_rtrpools_adjust(int tiny, int small, int large);
540 int lnet_rtrpools_enable(void);
541 void lnet_rtrpools_disable(void);
542 void lnet_rtrpools_free(int keep_pools);
543 struct lnet_remotenet *lnet_find_rnet_locked(__u32 net);
544 int lnet_dyn_add_net(struct lnet_ioctl_config_data *conf);
545 int lnet_dyn_del_net(__u32 net);
546 int lnet_dyn_add_ni(struct lnet_ioctl_config_ni *conf);
547 int lnet_dyn_del_ni(struct lnet_ioctl_config_ni *conf);
548 int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason);
549 struct lnet_net *lnet_get_net_locked(__u32 net_id);
551 int lnet_islocalnid(lnet_nid_t nid);
552 int lnet_islocalnet(__u32 net);
554 void lnet_msg_attach_md(struct lnet_msg *msg, struct lnet_libmd *md,
555 unsigned int offset, unsigned int mlen);
556 void lnet_msg_detach_md(struct lnet_msg *msg, int status);
557 void lnet_build_unlink_event(struct lnet_libmd *md, struct lnet_event *ev);
558 void lnet_build_msg_event(struct lnet_msg *msg, enum lnet_event_kind ev_type);
559 void lnet_msg_commit(struct lnet_msg *msg, int cpt);
560 void lnet_msg_decommit(struct lnet_msg *msg, int cpt, int status);
562 void lnet_eq_enqueue_event(struct lnet_eq *eq, struct lnet_event *ev);
563 void lnet_prep_send(struct lnet_msg *msg, int type,
564 struct lnet_process_id target, unsigned int offset,
566 int lnet_send(lnet_nid_t nid, struct lnet_msg *msg, lnet_nid_t rtr_nid);
567 void lnet_return_tx_credits_locked(struct lnet_msg *msg);
568 void lnet_return_rx_credits_locked(struct lnet_msg *msg);
569 void lnet_schedule_blocked_locked(struct lnet_rtrbufpool *rbp);
570 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
572 /* portals functions */
573 /* portals attributes */
575 lnet_ptl_is_lazy(struct lnet_portal *ptl)
577 return !!(ptl->ptl_options & LNET_PTL_LAZY);
581 lnet_ptl_is_unique(struct lnet_portal *ptl)
583 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
587 lnet_ptl_is_wildcard(struct lnet_portal *ptl)
589 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
593 lnet_ptl_setopt(struct lnet_portal *ptl, int opt)
595 ptl->ptl_options |= opt;
599 lnet_ptl_unsetopt(struct lnet_portal *ptl, int opt)
601 ptl->ptl_options &= ~opt;
604 /* match-table functions */
605 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
606 struct lnet_process_id id, __u64 mbits);
607 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
608 struct lnet_process_id id,
609 __u64 mbits, __u64 ignore_bits,
610 enum lnet_ins_pos pos);
611 int lnet_mt_match_md(struct lnet_match_table *mtable,
612 struct lnet_match_info *info, struct lnet_msg *msg);
614 /* portals match/attach functions */
615 void lnet_ptl_attach_md(struct lnet_me *me, struct lnet_libmd *md,
616 struct list_head *matches, struct list_head *drops);
617 void lnet_ptl_detach_md(struct lnet_me *me, struct lnet_libmd *md);
618 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
620 /* initialized and finalize portals */
621 int lnet_portals_create(void);
622 void lnet_portals_destroy(void);
624 /* message functions */
625 int lnet_parse(struct lnet_ni *ni, struct lnet_hdr *hdr,
626 lnet_nid_t fromnid, void *private, int rdma_req);
627 int lnet_parse_local(struct lnet_ni *ni, struct lnet_msg *msg);
628 int lnet_parse_forward_locked(struct lnet_ni *ni, struct lnet_msg *msg);
630 void lnet_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
631 int delayed, unsigned int offset, unsigned int mlen,
633 void lnet_ni_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
634 int delayed, unsigned int offset,
635 unsigned int mlen, unsigned int rlen);
637 struct lnet_msg *lnet_create_reply_msg(struct lnet_ni *ni,
638 struct lnet_msg *get_msg);
639 void lnet_set_reply_msg_len(struct lnet_ni *ni, struct lnet_msg *msg,
642 void lnet_finalize(struct lnet_msg *msg, int rc);
644 void lnet_drop_message(struct lnet_ni *ni, int cpt, void *private,
646 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
647 void lnet_recv_delayed_msg_list(struct list_head *head);
649 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
650 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
651 void lnet_msg_containers_destroy(void);
652 int lnet_msg_containers_create(void);
654 char *lnet_msgtyp2str(int type);
655 void lnet_print_hdr(struct lnet_hdr *hdr);
656 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
658 /** \addtogroup lnet_fault_simulation @{ */
660 int lnet_fault_ctl(int cmd, struct libcfs_ioctl_data *data);
661 int lnet_fault_init(void);
662 void lnet_fault_fini(void);
664 bool lnet_drop_rule_match(struct lnet_hdr *hdr);
666 int lnet_delay_rule_add(struct lnet_fault_attr *attr);
667 int lnet_delay_rule_del(lnet_nid_t src, lnet_nid_t dst, bool shutdown);
668 int lnet_delay_rule_list(int pos, struct lnet_fault_attr *attr,
669 struct lnet_fault_stat *stat);
670 void lnet_delay_rule_reset(void);
671 void lnet_delay_rule_check(void);
672 bool lnet_delay_rule_match_locked(struct lnet_hdr *hdr, struct lnet_msg *msg);
674 /** @} lnet_fault_simulation */
676 void lnet_counters_get(struct lnet_counters *counters);
677 void lnet_counters_reset(void);
679 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
680 int lnet_extract_iov(int dst_niov, struct kvec *dst,
681 int src_niov, struct kvec *src,
682 unsigned int offset, unsigned int len);
684 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
685 int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst,
686 int src_niov, lnet_kiov_t *src,
687 unsigned int offset, unsigned int len);
689 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
690 unsigned int doffset,
691 unsigned int nsiov, struct kvec *siov,
692 unsigned int soffset, unsigned int nob);
693 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
694 unsigned int iovoffset,
695 unsigned int nkiov, lnet_kiov_t *kiov,
696 unsigned int kiovoffset, unsigned int nob);
697 void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
698 unsigned int kiovoffset,
699 unsigned int niov, struct kvec *iov,
700 unsigned int iovoffset, unsigned int nob);
701 void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov,
702 unsigned int doffset,
703 unsigned int nskiov, lnet_kiov_t *skiov,
704 unsigned int soffset, unsigned int nob);
707 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
708 unsigned int nsiov, struct kvec *siov, unsigned int soffset,
711 struct kvec diov = { .iov_base = dest, .iov_len = dlen };
713 lnet_copy_iov2iov(1, &diov, doffset,
714 nsiov, siov, soffset, nob);
718 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
719 unsigned int nsiov, lnet_kiov_t *skiov,
720 unsigned int soffset, unsigned int nob)
722 struct kvec diov = { .iov_base = dest, .iov_len = dlen };
724 lnet_copy_kiov2iov(1, &diov, doffset,
725 nsiov, skiov, soffset, nob);
729 lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
730 int slen, void *src, unsigned int soffset,
733 struct kvec siov = { .iov_base = src, .iov_len = slen };
734 lnet_copy_iov2iov(ndiov, diov, doffset,
735 1, &siov, soffset, nob);
739 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov,
740 unsigned int doffset, int slen, void *src,
741 unsigned int soffset, unsigned int nob)
743 struct kvec siov = { .iov_base = src, .iov_len = slen };
744 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
745 1, &siov, soffset, nob);
748 void lnet_me_unlink(struct lnet_me *me);
750 void lnet_md_unlink(struct lnet_libmd *md);
751 void lnet_md_deconstruct(struct lnet_libmd *lmd, struct lnet_md *umd);
752 int lnet_cpt_of_md(struct lnet_libmd *md);
754 void lnet_register_lnd(struct lnet_lnd *lnd);
755 void lnet_unregister_lnd(struct lnet_lnd *lnd);
757 int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid,
758 __u32 local_ip, __u32 peer_ip, int peer_port);
759 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
760 __u32 peer_ip, int port);
761 int lnet_count_acceptor_nets(void);
762 int lnet_acceptor_timeout(void);
763 int lnet_acceptor_port(void);
764 int lnet_acceptor_start(void);
765 void lnet_acceptor_stop(void);
767 int lnet_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
768 int lnet_ipif_enumerate(char ***names);
769 void lnet_ipif_free_enumeration(char **names, int n);
770 int lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
771 int lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
772 int lnet_sock_getaddr(struct socket *socket, bool remote, __u32 *ip, int *port);
773 int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
774 int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
776 int lnet_sock_listen(struct socket **sockp, __u32 ip, int port, int backlog);
777 int lnet_sock_accept(struct socket **newsockp, struct socket *sock);
778 int lnet_sock_connect(struct socket **sockp, int *fatal,
779 __u32 local_ip, int local_port,
780 __u32 peer_ip, int peer_port);
782 int lnet_peers_start_down(void);
783 int lnet_peer_buffer_credits(struct lnet_net *net);
785 int lnet_router_checker_start(void);
786 void lnet_router_checker_stop(void);
787 void lnet_router_ni_update_locked(struct lnet_peer_ni *gw, __u32 net);
788 void lnet_swap_pinginfo(struct lnet_ping_info *info);
790 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
791 int lnet_parse_routes(char *route_str, int *im_a_router);
792 int lnet_parse_networks(struct list_head *nilist, char *networks,
793 bool use_tcp_bonding);
794 bool lnet_net_unique(__u32 net_id, struct list_head *nilist,
795 struct lnet_net **net);
796 bool lnet_ni_unique_net(struct list_head *nilist, char *iface);
797 void lnet_incr_dlc_seq(void);
798 __u32 lnet_get_dlc_seq_locked(void);
800 struct lnet_peer_ni *lnet_get_next_peer_ni_locked(struct lnet_peer *peer,
801 struct lnet_peer_net *peer_net,
802 struct lnet_peer_ni *prev);
803 struct lnet_peer *lnet_find_or_create_peer_locked(lnet_nid_t dst_nid, int cpt);
804 struct lnet_peer_ni *lnet_nid2peerni_locked(lnet_nid_t nid, int cpt);
805 struct lnet_peer_ni *lnet_nid2peerni_ex(lnet_nid_t nid, int cpt);
806 struct lnet_peer_ni *lnet_find_peer_ni_locked(lnet_nid_t nid);
807 void lnet_peer_net_added(struct lnet_net *net);
808 lnet_nid_t lnet_peer_primary_nid(lnet_nid_t nid);
809 void lnet_peer_tables_cleanup(struct lnet_net *net);
810 void lnet_peer_uninit(void);
811 int lnet_peer_tables_create(void);
812 void lnet_debug_peer(lnet_nid_t nid);
813 struct lnet_peer_net *lnet_peer_get_net_locked(struct lnet_peer *peer,
815 bool lnet_peer_is_ni_pref_locked(struct lnet_peer_ni *lpni,
817 int lnet_add_peer_ni_to_peer(lnet_nid_t key_nid, lnet_nid_t nid, bool mr);
818 int lnet_del_peer_ni_from_peer(lnet_nid_t key_nid, lnet_nid_t nid);
819 int lnet_get_peer_info(__u32 idx, lnet_nid_t *primary_nid, lnet_nid_t *nid,
820 bool *mr, struct lnet_peer_ni_credit_info *peer_ni_info,
821 struct lnet_ioctl_element_stats *peer_ni_stats);
822 int lnet_get_peer_ni_info(__u32 peer_index, __u64 *nid,
823 char alivness[LNET_MAX_STR_LEN],
824 __u32 *cpt_iter, __u32 *refcount,
825 __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits,
826 __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis,
827 __u32 *peer_tx_qnob);
831 lnet_get_num_peer_nis(struct lnet_peer *peer)
833 struct lnet_peer_net *lpn;
834 struct lnet_peer_ni *lpni;
837 list_for_each_entry(lpn, &peer->lp_peer_nets, lpn_on_peer_list)
838 list_for_each_entry(lpni, &lpn->lpn_peer_nis,
839 lpni_on_peer_net_list)
846 lnet_is_peer_ni_healthy_locked(struct lnet_peer_ni *lpni)
848 return lpni->lpni_healthy;
852 lnet_set_peer_ni_health_locked(struct lnet_peer_ni *lpni, bool health)
854 lpni->lpni_healthy = health;
858 lnet_is_peer_net_healthy_locked(struct lnet_peer_net *peer_net)
860 struct lnet_peer_ni *lpni;
862 list_for_each_entry(lpni, &peer_net->lpn_peer_nis,
863 lpni_on_peer_net_list) {
864 if (lnet_is_peer_ni_healthy_locked(lpni))
872 lnet_is_peer_healthy_locked(struct lnet_peer *peer)
874 struct lnet_peer_net *peer_net;
876 list_for_each_entry(peer_net, &peer->lp_peer_nets, lpn_on_peer_list) {
877 if (lnet_is_peer_net_healthy_locked(peer_net))
885 lnet_peer_set_alive(struct lnet_peer_ni *lp)
887 lp->lpni_last_alive = lp->lpni_last_query = cfs_time_current();
889 lnet_notify_locked(lp, 0, 1, lp->lpni_last_alive);