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, 2017, 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 #define CFS_FAIL_PTLRPC_OST_BULK_CB2 0xe000
44 # error This include is only for kernel use.
47 #include <libcfs/libcfs.h>
49 #include <lnet/lib-types.h>
50 #include <uapi/linux/lnet/lnet-dlc.h>
51 #include <uapi/linux/lnet/lnet-types.h>
52 #include <uapi/linux/lnet/lnetctl.h>
53 #include <uapi/linux/lnet/nidstr.h>
55 extern struct lnet the_lnet; /* THE network */
57 #if (BITS_PER_LONG == 32)
58 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
59 # define LNET_CPT_MAX_BITS 1
61 #else /* 64-bit system */
63 * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
64 * under risk of consuming all lh_cookie.
66 # define LNET_CPT_MAX_BITS 8
67 #endif /* BITS_PER_LONG == 32 */
69 /* max allowed CPT number */
70 #define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
72 #define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
73 #define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
74 #define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
77 #define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
80 #define DEFAULT_PEER_TIMEOUT 180
81 #define LNET_LND_DEFAULT_TIMEOUT 5
83 #ifdef HAVE_KERN_SOCK_GETNAME_2ARGS
84 #define lnet_kernel_getpeername(sock, addr, addrlen) \
85 kernel_getpeername(sock, addr)
86 #define lnet_kernel_getsockname(sock, addr, addrlen) \
87 kernel_getsockname(sock, addr)
89 #define lnet_kernel_getpeername(sock, addr, addrlen) \
90 kernel_getpeername(sock, addr, addrlen)
91 #define lnet_kernel_getsockname(sock, addr, addrlen) \
92 kernel_getsockname(sock, addr, addrlen)
95 static inline int lnet_is_route_alive(struct lnet_route *route)
97 if (!route->lr_gateway->lpni_alive)
98 return 0; /* gateway is down */
99 if ((route->lr_gateway->lpni_ping_feats &
100 LNET_PING_FEAT_NI_STATUS) == 0)
101 return 1; /* no NI status, assume it's alive */
102 /* has NI status, check # down NIs */
103 return route->lr_downis == 0;
106 static inline int lnet_is_wire_handle_none(struct lnet_handle_wire *wh)
108 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
109 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
112 static inline int lnet_md_exhausted(struct lnet_libmd *md)
114 return (md->md_threshold == 0 ||
115 ((md->md_options & LNET_MD_MAX_SIZE) != 0 &&
116 md->md_offset + md->md_max_size > md->md_length));
119 static inline int lnet_md_unlinkable(struct lnet_libmd *md)
121 /* Should unlink md when its refcount is 0 and either:
122 * - md has been flagged for deletion (by auto unlink or LNetM[DE]Unlink,
123 * in the latter case md may not be exhausted).
124 * - auto unlink is on and md is exhausted.
126 if (md->md_refcount != 0)
129 if ((md->md_flags & LNET_MD_FLAG_ZOMBIE) != 0)
132 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) != 0 &&
133 lnet_md_exhausted(md));
136 #define lnet_cpt_table() (the_lnet.ln_cpt_table)
137 #define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
140 lnet_cpt_of_cookie(__u64 cookie)
142 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
144 /* LNET_CPT_NUMBER doesn't have to be power2, which means we can
145 * get illegal cpt from it's invalid cookie */
146 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
150 lnet_res_lock(int cpt)
152 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
156 lnet_res_unlock(int cpt)
158 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
162 lnet_res_lock_current(void)
164 int cpt = lnet_cpt_current();
171 lnet_net_lock(int cpt)
173 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
177 lnet_net_unlock(int cpt)
179 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
183 lnet_net_lock_current(void)
185 int cpt = lnet_cpt_current();
191 #define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
192 #define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
194 #define lnet_ptl_lock(ptl) spin_lock(&(ptl)->ptl_lock)
195 #define lnet_ptl_unlock(ptl) spin_unlock(&(ptl)->ptl_lock)
196 #define lnet_eq_wait_lock() spin_lock(&the_lnet.ln_eq_wait_lock)
197 #define lnet_eq_wait_unlock() spin_unlock(&the_lnet.ln_eq_wait_lock)
198 #define lnet_ni_lock(ni) spin_lock(&(ni)->ni_lock)
199 #define lnet_ni_unlock(ni) spin_unlock(&(ni)->ni_lock)
201 #define MAX_PORTALS 64
203 #define LNET_SMALL_MD_SIZE offsetof(struct lnet_libmd, md_iov.iov[1])
204 extern struct kmem_cache *lnet_mes_cachep; /* MEs kmem_cache */
205 extern struct kmem_cache *lnet_small_mds_cachep; /* <= LNET_SMALL_MD_SIZE bytes
208 static inline struct lnet_eq *
213 LIBCFS_ALLOC(eq, sizeof(*eq));
218 lnet_eq_free(struct lnet_eq *eq)
220 LIBCFS_FREE(eq, sizeof(*eq));
223 static inline struct lnet_libmd *
224 lnet_md_alloc(struct lnet_md *umd)
226 struct lnet_libmd *md;
230 if ((umd->options & LNET_MD_KIOV) != 0) {
232 size = offsetof(struct lnet_libmd, md_iov.kiov[niov]);
234 niov = ((umd->options & LNET_MD_IOVEC) != 0) ?
236 size = offsetof(struct lnet_libmd, md_iov.iov[niov]);
239 if (size <= LNET_SMALL_MD_SIZE) {
240 md = kmem_cache_alloc(lnet_small_mds_cachep,
241 GFP_NOFS | __GFP_ZERO);
243 CDEBUG(D_MALLOC, "slab-alloced 'md' of size %u at "
246 CDEBUG(D_MALLOC, "failed to allocate 'md' of size %u\n",
251 LIBCFS_ALLOC(md, size);
255 /* Set here in case of early free */
256 md->md_options = umd->options;
258 INIT_LIST_HEAD(&md->md_list);
265 lnet_md_free(struct lnet_libmd *md)
269 if ((md->md_options & LNET_MD_KIOV) != 0)
270 size = offsetof(struct lnet_libmd, md_iov.kiov[md->md_niov]);
272 size = offsetof(struct lnet_libmd, md_iov.iov[md->md_niov]);
274 if (size <= LNET_SMALL_MD_SIZE) {
275 CDEBUG(D_MALLOC, "slab-freed 'md' at %p.\n", md);
276 kmem_cache_free(lnet_small_mds_cachep, md);
278 LIBCFS_FREE(md, size);
282 static inline struct lnet_me *
287 me = kmem_cache_alloc(lnet_mes_cachep, GFP_NOFS | __GFP_ZERO);
290 CDEBUG(D_MALLOC, "slab-alloced 'me' at %p.\n", me);
292 CDEBUG(D_MALLOC, "failed to allocate 'me'\n");
298 lnet_me_free(struct lnet_me *me)
300 CDEBUG(D_MALLOC, "slab-freed 'me' at %p.\n", me);
301 kmem_cache_free(lnet_mes_cachep, me);
304 struct lnet_libhandle *lnet_res_lh_lookup(struct lnet_res_container *rec,
306 void lnet_res_lh_initialize(struct lnet_res_container *rec,
307 struct lnet_libhandle *lh);
309 lnet_res_lh_invalidate(struct lnet_libhandle *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(struct lnet_handle_eq *handle, struct lnet_eq *eq)
320 LNetInvalidateEQHandle(handle);
324 handle->cookie = eq->eq_lh.lh_cookie;
327 static inline struct lnet_eq *
328 lnet_handle2eq(struct lnet_handle_eq *handle)
330 /* ALWAYS called with resource lock held */
331 struct lnet_libhandle *lh;
333 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
337 return lh_entry(lh, struct lnet_eq, eq_lh);
341 lnet_md2handle(struct lnet_handle_md *handle, struct lnet_libmd *md)
343 handle->cookie = md->md_lh.lh_cookie;
346 static inline struct lnet_libmd *
347 lnet_handle2md(struct lnet_handle_md *handle)
349 /* ALWAYS called with resource lock held */
350 struct lnet_libhandle *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, struct lnet_libmd, md_lh);
362 static inline struct lnet_libmd *
363 lnet_wire_handle2md(struct lnet_handle_wire *wh)
365 /* ALWAYS called with resource lock held */
366 struct lnet_libhandle *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, struct lnet_libmd, md_lh);
382 lnet_me2handle(struct lnet_handle_me *handle, struct lnet_me *me)
384 handle->cookie = me->me_lh.lh_cookie;
387 static inline struct lnet_me *
388 lnet_handle2me(struct lnet_handle_me *handle)
390 /* ALWAYS called with resource lock held */
391 struct lnet_libhandle *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, struct lnet_me, me_lh);
404 lnet_peer_net_addref_locked(struct lnet_peer_net *lpn)
406 atomic_inc(&lpn->lpn_refcount);
409 extern void lnet_destroy_peer_net_locked(struct lnet_peer_net *lpn);
412 lnet_peer_net_decref_locked(struct lnet_peer_net *lpn)
414 if (atomic_dec_and_test(&lpn->lpn_refcount))
415 lnet_destroy_peer_net_locked(lpn);
419 lnet_peer_addref_locked(struct lnet_peer *lp)
421 atomic_inc(&lp->lp_refcount);
424 extern void lnet_destroy_peer_locked(struct lnet_peer *lp);
427 lnet_peer_decref_locked(struct lnet_peer *lp)
429 if (atomic_dec_and_test(&lp->lp_refcount))
430 lnet_destroy_peer_locked(lp);
434 lnet_peer_ni_addref_locked(struct lnet_peer_ni *lp)
436 LASSERT(atomic_read(&lp->lpni_refcount) > 0);
437 atomic_inc(&lp->lpni_refcount);
440 extern void lnet_destroy_peer_ni_locked(struct lnet_peer_ni *lp);
443 lnet_peer_ni_decref_locked(struct lnet_peer_ni *lp)
445 LASSERT(atomic_read(&lp->lpni_refcount) > 0);
446 if (atomic_dec_and_test(&lp->lpni_refcount))
447 lnet_destroy_peer_ni_locked(lp);
451 lnet_isrouter(struct lnet_peer_ni *lp)
453 return lp->lpni_rtr_refcount != 0;
457 lnet_ni_addref_locked(struct lnet_ni *ni, int cpt)
459 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
460 LASSERT(*ni->ni_refs[cpt] >= 0);
462 (*ni->ni_refs[cpt])++;
466 lnet_ni_addref(struct lnet_ni *ni)
469 lnet_ni_addref_locked(ni, 0);
474 lnet_ni_decref_locked(struct lnet_ni *ni, int cpt)
476 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
477 LASSERT(*ni->ni_refs[cpt] > 0);
479 (*ni->ni_refs[cpt])--;
483 lnet_ni_decref(struct lnet_ni *ni)
486 lnet_ni_decref_locked(ni, 0);
490 static inline struct lnet_msg *
493 struct lnet_msg *msg;
495 LIBCFS_ALLOC(msg, sizeof(*msg));
497 /* no need to zero, LIBCFS_ALLOC does for us */
502 lnet_msg_free(struct lnet_msg *msg)
504 LASSERT(!msg->msg_onactivelist);
505 LIBCFS_FREE(msg, sizeof(*msg));
508 static inline struct lnet_rsp_tracker *
509 lnet_rspt_alloc(int cpt)
511 struct lnet_rsp_tracker *rspt;
512 LIBCFS_ALLOC(rspt, sizeof(*rspt));
514 the_lnet.ln_counters[cpt]->lct_health.lch_rst_alloc++;
515 lnet_net_unlock(cpt);
520 lnet_rspt_free(struct lnet_rsp_tracker *rspt, int cpt)
522 LIBCFS_FREE(rspt, sizeof(*rspt));
524 the_lnet.ln_counters[cpt]->lct_health.lch_rst_alloc--;
525 lnet_net_unlock(cpt);
528 void lnet_ni_free(struct lnet_ni *ni);
529 void lnet_net_free(struct lnet_net *net);
532 lnet_net_alloc(__u32 net_type, struct list_head *netlist);
535 lnet_ni_alloc(struct lnet_net *net, struct cfs_expr_list *el,
538 lnet_ni_alloc_w_cpt_array(struct lnet_net *net, __u32 *cpts, __u32 ncpts,
542 lnet_nid2peerhash(lnet_nid_t nid)
544 return hash_long(nid, LNET_PEER_HASH_BITS);
547 static inline struct list_head *
548 lnet_net2rnethash(__u32 net)
550 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
552 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
555 extern struct lnet_lnd the_lolnd;
556 extern int avoid_asym_router_failure;
558 extern unsigned int lnet_nid_cpt_hash(lnet_nid_t nid, unsigned int number);
559 extern int lnet_cpt_of_nid_locked(lnet_nid_t nid, struct lnet_ni *ni);
560 extern int lnet_cpt_of_nid(lnet_nid_t nid, struct lnet_ni *ni);
561 extern struct lnet_ni *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
562 extern struct lnet_ni *lnet_nid2ni_addref(lnet_nid_t nid);
563 extern struct lnet_ni *lnet_net2ni_locked(__u32 net, int cpt);
564 extern struct lnet_ni *lnet_net2ni_addref(__u32 net);
565 struct lnet_net *lnet_get_net_locked(__u32 net_id);
567 int lnet_lib_init(void);
568 void lnet_lib_exit(void);
570 extern unsigned lnet_transaction_timeout;
571 extern unsigned lnet_retry_count;
572 extern unsigned int lnet_numa_range;
573 extern unsigned int lnet_health_sensitivity;
574 extern unsigned int lnet_recovery_interval;
575 extern unsigned int lnet_peer_discovery_disabled;
576 extern unsigned int lnet_drop_asym_route;
577 extern int portal_rotor;
579 int lnet_notify(struct lnet_ni *ni, lnet_nid_t peer, int alive,
581 void lnet_notify_locked(struct lnet_peer_ni *lp, int notifylnd, int alive,
583 int lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway_nid,
584 unsigned int priority);
585 int lnet_check_routes(void);
586 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
587 void lnet_destroy_routes(void);
588 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
589 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
590 int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg);
591 struct lnet_ni *lnet_get_next_ni_locked(struct lnet_net *mynet,
592 struct lnet_ni *prev);
593 struct lnet_ni *lnet_get_ni_idx_locked(int idx);
595 extern int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
596 struct libcfs_ioctl_hdr __user *uparam);
597 extern int lnet_get_peer_list(__u32 *countp, __u32 *sizep,
598 struct lnet_process_id __user *ids);
599 extern void lnet_peer_ni_set_healthv(lnet_nid_t nid, int value, bool all);
600 extern void lnet_peer_ni_add_to_recoveryq_locked(struct lnet_peer_ni *lpni);
602 void lnet_router_debugfs_init(void);
603 void lnet_router_debugfs_fini(void);
604 int lnet_rtrpools_alloc(int im_a_router);
605 void lnet_destroy_rtrbuf(struct lnet_rtrbuf *rb, int npages);
606 int lnet_rtrpools_adjust(int tiny, int small, int large);
607 int lnet_rtrpools_enable(void);
608 void lnet_rtrpools_disable(void);
609 void lnet_rtrpools_free(int keep_pools);
610 struct lnet_remotenet *lnet_find_rnet_locked(__u32 net);
611 int lnet_dyn_add_net(struct lnet_ioctl_config_data *conf);
612 int lnet_dyn_del_net(__u32 net);
613 int lnet_dyn_add_ni(struct lnet_ioctl_config_ni *conf);
614 int lnet_dyn_del_ni(struct lnet_ioctl_config_ni *conf);
615 int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason);
616 struct lnet_net *lnet_get_net_locked(__u32 net_id);
618 int lnet_islocalnid(lnet_nid_t nid);
619 int lnet_islocalnet(__u32 net);
621 void lnet_msg_attach_md(struct lnet_msg *msg, struct lnet_libmd *md,
622 unsigned int offset, unsigned int mlen);
623 void lnet_build_unlink_event(struct lnet_libmd *md, struct lnet_event *ev);
624 void lnet_build_msg_event(struct lnet_msg *msg, enum lnet_event_kind ev_type);
625 void lnet_msg_commit(struct lnet_msg *msg, int cpt);
626 void lnet_msg_decommit(struct lnet_msg *msg, int cpt, int status);
628 void lnet_eq_enqueue_event(struct lnet_eq *eq, struct lnet_event *ev);
629 void lnet_prep_send(struct lnet_msg *msg, int type,
630 struct lnet_process_id target, unsigned int offset,
632 int lnet_send(lnet_nid_t nid, struct lnet_msg *msg, lnet_nid_t rtr_nid);
633 int lnet_send_ping(lnet_nid_t dest_nid, struct lnet_handle_md *mdh, int nnis,
634 void *user_ptr, struct lnet_handle_eq eqh, bool recovery);
635 void lnet_return_tx_credits_locked(struct lnet_msg *msg);
636 void lnet_return_rx_credits_locked(struct lnet_msg *msg);
637 void lnet_schedule_blocked_locked(struct lnet_rtrbufpool *rbp);
638 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
640 /* portals functions */
641 /* portals attributes */
643 lnet_ptl_is_lazy(struct lnet_portal *ptl)
645 return !!(ptl->ptl_options & LNET_PTL_LAZY);
649 lnet_ptl_is_unique(struct lnet_portal *ptl)
651 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
655 lnet_ptl_is_wildcard(struct lnet_portal *ptl)
657 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
661 lnet_ptl_setopt(struct lnet_portal *ptl, int opt)
663 ptl->ptl_options |= opt;
667 lnet_ptl_unsetopt(struct lnet_portal *ptl, int opt)
669 ptl->ptl_options &= ~opt;
672 /* match-table functions */
673 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
674 struct lnet_process_id id, __u64 mbits);
675 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
676 struct lnet_process_id id,
677 __u64 mbits, __u64 ignore_bits,
678 enum lnet_ins_pos pos);
679 int lnet_mt_match_md(struct lnet_match_table *mtable,
680 struct lnet_match_info *info, struct lnet_msg *msg);
682 /* portals match/attach functions */
683 void lnet_ptl_attach_md(struct lnet_me *me, struct lnet_libmd *md,
684 struct list_head *matches, struct list_head *drops);
685 void lnet_ptl_detach_md(struct lnet_me *me, struct lnet_libmd *md);
686 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
688 /* initialized and finalize portals */
689 int lnet_portals_create(void);
690 void lnet_portals_destroy(void);
692 /* message functions */
693 int lnet_parse(struct lnet_ni *ni, struct lnet_hdr *hdr,
694 lnet_nid_t fromnid, void *private, int rdma_req);
695 int lnet_parse_local(struct lnet_ni *ni, struct lnet_msg *msg);
696 int lnet_parse_forward_locked(struct lnet_ni *ni, struct lnet_msg *msg);
698 void lnet_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
699 int delayed, unsigned int offset, unsigned int mlen,
701 void lnet_ni_recv(struct lnet_ni *ni, void *private, struct lnet_msg *msg,
702 int delayed, unsigned int offset,
703 unsigned int mlen, unsigned int rlen);
705 struct lnet_msg *lnet_create_reply_msg(struct lnet_ni *ni,
706 struct lnet_msg *get_msg);
707 void lnet_set_reply_msg_len(struct lnet_ni *ni, struct lnet_msg *msg,
709 void lnet_detach_rsp_tracker(struct lnet_libmd *md, int cpt);
711 void lnet_finalize(struct lnet_msg *msg, int rc);
712 bool lnet_send_error_simulation(struct lnet_msg *msg,
713 enum lnet_msg_hstatus *hstatus);
714 void lnet_handle_remote_failure_locked(struct lnet_peer_ni *lpni);
716 void lnet_drop_message(struct lnet_ni *ni, int cpt, void *private,
717 unsigned int nob, __u32 msg_type);
718 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
719 void lnet_recv_delayed_msg_list(struct list_head *head);
721 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
722 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
723 void lnet_msg_containers_destroy(void);
724 int lnet_msg_containers_create(void);
726 char *lnet_health_error2str(enum lnet_msg_hstatus hstatus);
727 char *lnet_msgtyp2str(int type);
728 void lnet_print_hdr(struct lnet_hdr *hdr);
729 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
731 /** \addtogroup lnet_fault_simulation @{ */
733 int lnet_fault_ctl(int cmd, struct libcfs_ioctl_data *data);
734 int lnet_fault_init(void);
735 void lnet_fault_fini(void);
737 bool lnet_drop_rule_match(struct lnet_hdr *hdr, enum lnet_msg_hstatus *hstatus);
739 int lnet_delay_rule_add(struct lnet_fault_attr *attr);
740 int lnet_delay_rule_del(lnet_nid_t src, lnet_nid_t dst, bool shutdown);
741 int lnet_delay_rule_list(int pos, struct lnet_fault_attr *attr,
742 struct lnet_fault_stat *stat);
743 void lnet_delay_rule_reset(void);
744 void lnet_delay_rule_check(void);
745 bool lnet_delay_rule_match_locked(struct lnet_hdr *hdr, struct lnet_msg *msg);
747 /** @} lnet_fault_simulation */
749 void lnet_counters_get_common(struct lnet_counters_common *common);
750 void lnet_counters_get(struct lnet_counters *counters);
751 void lnet_counters_reset(void);
753 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
754 int lnet_extract_iov(int dst_niov, struct kvec *dst,
755 int src_niov, struct kvec *src,
756 unsigned int offset, unsigned int len);
758 unsigned int lnet_kiov_nob (unsigned int niov, lnet_kiov_t *iov);
759 int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst,
760 int src_niov, lnet_kiov_t *src,
761 unsigned int offset, unsigned int len);
763 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
764 unsigned int doffset,
765 unsigned int nsiov, struct kvec *siov,
766 unsigned int soffset, unsigned int nob);
767 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
768 unsigned int iovoffset,
769 unsigned int nkiov, lnet_kiov_t *kiov,
770 unsigned int kiovoffset, unsigned int nob);
771 void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
772 unsigned int kiovoffset,
773 unsigned int niov, struct kvec *iov,
774 unsigned int iovoffset, unsigned int nob);
775 void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov,
776 unsigned int doffset,
777 unsigned int nskiov, lnet_kiov_t *skiov,
778 unsigned int soffset, unsigned int nob);
781 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
782 unsigned int nsiov, struct kvec *siov, unsigned int soffset,
785 struct kvec diov = { .iov_base = dest, .iov_len = dlen };
787 lnet_copy_iov2iov(1, &diov, doffset,
788 nsiov, siov, soffset, nob);
792 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
793 unsigned int nsiov, lnet_kiov_t *skiov,
794 unsigned int soffset, unsigned int nob)
796 struct kvec diov = { .iov_base = dest, .iov_len = dlen };
798 lnet_copy_kiov2iov(1, &diov, doffset,
799 nsiov, skiov, soffset, nob);
803 lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
804 int slen, void *src, unsigned int soffset,
807 struct kvec siov = { .iov_base = src, .iov_len = slen };
808 lnet_copy_iov2iov(ndiov, diov, doffset,
809 1, &siov, soffset, nob);
813 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov,
814 unsigned int doffset, int slen, void *src,
815 unsigned int soffset, unsigned int nob)
817 struct kvec siov = { .iov_base = src, .iov_len = slen };
818 lnet_copy_iov2kiov(ndiov, dkiov, doffset,
819 1, &siov, soffset, nob);
822 void lnet_me_unlink(struct lnet_me *me);
824 void lnet_md_unlink(struct lnet_libmd *md);
825 void lnet_md_deconstruct(struct lnet_libmd *lmd, struct lnet_md *umd);
826 struct page *lnet_kvaddr_to_page(unsigned long vaddr);
827 int lnet_cpt_of_md(struct lnet_libmd *md, unsigned int offset);
829 unsigned int lnet_get_lnd_timeout(void);
830 void lnet_register_lnd(struct lnet_lnd *lnd);
831 void lnet_unregister_lnd(struct lnet_lnd *lnd);
833 int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid,
834 __u32 local_ip, __u32 peer_ip, int peer_port);
835 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
836 __u32 peer_ip, int port);
837 int lnet_count_acceptor_nets(void);
838 int lnet_acceptor_timeout(void);
839 int lnet_acceptor_port(void);
840 int lnet_acceptor_start(void);
841 void lnet_acceptor_stop(void);
843 int lnet_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
844 int lnet_ipif_enumerate(char ***names);
845 void lnet_ipif_free_enumeration(char **names, int n);
846 int lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
847 int lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
848 int lnet_sock_getaddr(struct socket *socket, bool remote, __u32 *ip, int *port);
849 int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
850 int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
852 int lnet_sock_listen(struct socket **sockp, __u32 ip, int port, int backlog);
853 int lnet_sock_accept(struct socket **newsockp, struct socket *sock);
854 int lnet_sock_connect(struct socket **sockp, int *fatal,
855 __u32 local_ip, int local_port,
856 __u32 peer_ip, int peer_port);
858 int lnet_peers_start_down(void);
859 int lnet_peer_buffer_credits(struct lnet_net *net);
861 int lnet_monitor_thr_start(void);
862 void lnet_monitor_thr_stop(void);
864 bool lnet_router_checker_active(void);
865 void lnet_check_routers(void);
866 int lnet_router_pre_mt_start(void);
867 void lnet_router_post_mt_start(void);
868 void lnet_prune_rc_data(int wait_unlink);
869 void lnet_router_cleanup(void);
870 void lnet_router_ni_update_locked(struct lnet_peer_ni *gw, __u32 net);
871 void lnet_swap_pinginfo(struct lnet_ping_buffer *pbuf);
873 int lnet_ping_info_validate(struct lnet_ping_info *pinfo);
874 struct lnet_ping_buffer *lnet_ping_buffer_alloc(int nnis, gfp_t gfp);
875 void lnet_ping_buffer_free(struct lnet_ping_buffer *pbuf);
877 static inline void lnet_ping_buffer_addref(struct lnet_ping_buffer *pbuf)
879 atomic_inc(&pbuf->pb_refcnt);
882 static inline void lnet_ping_buffer_decref(struct lnet_ping_buffer *pbuf)
884 if (atomic_dec_and_test(&pbuf->pb_refcnt))
885 lnet_ping_buffer_free(pbuf);
888 static inline int lnet_ping_buffer_numref(struct lnet_ping_buffer *pbuf)
890 return atomic_read(&pbuf->pb_refcnt);
893 static inline int lnet_push_target_resize_needed(void)
895 return the_lnet.ln_push_target->pb_nnis < the_lnet.ln_push_target_nnis;
898 int lnet_push_target_resize(void);
899 void lnet_peer_push_event(struct lnet_event *ev);
901 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
902 int lnet_parse_routes(char *route_str, int *im_a_router);
903 int lnet_parse_networks(struct list_head *nilist, char *networks,
904 bool use_tcp_bonding);
905 bool lnet_net_unique(__u32 net_id, struct list_head *nilist,
906 struct lnet_net **net);
907 bool lnet_ni_unique_net(struct list_head *nilist, char *iface);
908 void lnet_incr_dlc_seq(void);
909 __u32 lnet_get_dlc_seq_locked(void);
911 struct lnet_peer_ni *lnet_get_next_peer_ni_locked(struct lnet_peer *peer,
912 struct lnet_peer_net *peer_net,
913 struct lnet_peer_ni *prev);
914 struct lnet_peer_ni *lnet_nid2peerni_locked(lnet_nid_t nid, lnet_nid_t pref,
916 struct lnet_peer_ni *lnet_nid2peerni_ex(lnet_nid_t nid, int cpt);
917 struct lnet_peer_ni *lnet_find_peer_ni_locked(lnet_nid_t nid);
918 struct lnet_peer *lnet_find_peer(lnet_nid_t nid);
919 void lnet_peer_net_added(struct lnet_net *net);
920 lnet_nid_t lnet_peer_primary_nid_locked(lnet_nid_t nid);
921 int lnet_discover_peer_locked(struct lnet_peer_ni *lpni, int cpt, bool block);
922 int lnet_peer_discovery_start(void);
923 void lnet_peer_discovery_stop(void);
924 void lnet_push_update_to_peers(int force);
925 void lnet_peer_tables_cleanup(struct lnet_net *net);
926 void lnet_peer_uninit(void);
927 int lnet_peer_tables_create(void);
928 void lnet_debug_peer(lnet_nid_t nid);
929 struct lnet_peer_net *lnet_peer_get_net_locked(struct lnet_peer *peer,
931 bool lnet_peer_is_pref_nid_locked(struct lnet_peer_ni *lpni, lnet_nid_t nid);
932 int lnet_peer_ni_set_non_mr_pref_nid(struct lnet_peer_ni *lpni, lnet_nid_t nid);
933 int lnet_add_peer_ni(lnet_nid_t key_nid, lnet_nid_t nid, bool mr);
934 int lnet_del_peer_ni(lnet_nid_t key_nid, lnet_nid_t nid);
935 int lnet_get_peer_info(struct lnet_ioctl_peer_cfg *cfg, void __user *bulk);
936 int lnet_get_peer_ni_info(__u32 peer_index, __u64 *nid,
937 char alivness[LNET_MAX_STR_LEN],
938 __u32 *cpt_iter, __u32 *refcount,
939 __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits,
940 __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis,
941 __u32 *peer_tx_qnob);
942 int lnet_get_peer_ni_hstats(struct lnet_ioctl_peer_ni_hstats *stats);
944 static inline struct lnet_peer_net *
945 lnet_find_peer_net_locked(struct lnet_peer *peer, __u32 net_id)
947 struct lnet_peer_net *peer_net;
949 list_for_each_entry(peer_net, &peer->lp_peer_nets, lpn_peer_nets) {
950 if (peer_net->lpn_net_id == net_id)
958 lnet_peer_set_alive(struct lnet_peer_ni *lp)
960 lp->lpni_last_alive = ktime_get_seconds();
961 lp->lpni_last_query = lp->lpni_last_alive;
963 lnet_notify_locked(lp, 0, 1, lp->lpni_last_alive);
967 lnet_peer_is_multi_rail(struct lnet_peer *lp)
969 if (lp->lp_state & LNET_PEER_MULTI_RAIL)
975 lnet_peer_ni_is_configured(struct lnet_peer_ni *lpni)
977 if (lpni->lpni_peer_net->lpn_peer->lp_state & LNET_PEER_CONFIGURED)
983 lnet_peer_ni_is_primary(struct lnet_peer_ni *lpni)
985 return lpni->lpni_nid == lpni->lpni_peer_net->lpn_peer->lp_primary_nid;
988 bool lnet_peer_is_uptodate(struct lnet_peer *lp);
991 lnet_peer_needs_push(struct lnet_peer *lp)
993 if (!(lp->lp_state & LNET_PEER_MULTI_RAIL))
995 if (lp->lp_state & LNET_PEER_FORCE_PUSH)
997 if (lp->lp_state & LNET_PEER_NO_DISCOVERY)
999 if (lp->lp_node_seqno < atomic_read(&the_lnet.ln_ping_target_seqno))
1005 lnet_inc_healthv(atomic_t *healthv)
1007 atomic_add_unless(healthv, 1, LNET_MAX_HEALTH_VALUE);
1010 void lnet_incr_stats(struct lnet_element_stats *stats,
1011 enum lnet_msg_type msg_type,
1012 enum lnet_stats_type stats_type);
1014 __u32 lnet_sum_stats(struct lnet_element_stats *stats,
1015 enum lnet_stats_type stats_type);
1017 void lnet_usr_translate_stats(struct lnet_ioctl_element_msg_stats *msg_stats,
1018 struct lnet_element_stats *stats);