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35#ifndef __LNET_LIB_LNET_H__
36#define __LNET_LIB_LNET_H__
37
38#include "../libcfs/libcfs.h"
39#include "api.h"
40#include "lnet.h"
41#include "lib-types.h"
42#include "lib-dlc.h"
43
44extern lnet_t the_lnet;
45
46#if (BITS_PER_LONG == 32)
47
48#define LNET_CPT_MAX_BITS 1
49
50#else
51
52
53
54
55#define LNET_CPT_MAX_BITS 8
56#endif
57
58
59#define LNET_CPT_MAX (1 << LNET_CPT_MAX_BITS)
60
61#define LNET_CPT_NUMBER (the_lnet.ln_cpt_number)
62#define LNET_CPT_BITS (the_lnet.ln_cpt_bits)
63#define LNET_CPT_MASK ((1ULL << LNET_CPT_BITS) - 1)
64
65
66#define LNET_LOCK_EX CFS_PERCPT_LOCK_EX
67
68static inline int lnet_is_route_alive(lnet_route_t *route)
69{
70
71 if (!route->lr_gateway->lp_alive)
72 return 0;
73
74 if ((route->lr_gateway->lp_ping_feats &
75 LNET_PING_FEAT_NI_STATUS) == 0)
76 return 1;
77
78 return route->lr_downis == 0;
79}
80
81static inline int lnet_is_wire_handle_none(lnet_handle_wire_t *wh)
82{
83 return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
84 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
85}
86
87static inline int lnet_md_exhausted(lnet_libmd_t *md)
88{
89 return (!md->md_threshold ||
90 ((md->md_options & LNET_MD_MAX_SIZE) &&
91 md->md_offset + md->md_max_size > md->md_length));
92}
93
94static inline int lnet_md_unlinkable(lnet_libmd_t *md)
95{
96
97
98
99
100
101
102 if (md->md_refcount)
103 return 0;
104
105 if (md->md_flags & LNET_MD_FLAG_ZOMBIE)
106 return 1;
107
108 return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) &&
109 lnet_md_exhausted(md));
110}
111
112#define lnet_cpt_table() (the_lnet.ln_cpt_table)
113#define lnet_cpt_current() cfs_cpt_current(the_lnet.ln_cpt_table, 1)
114
115static inline int
116lnet_cpt_of_cookie(__u64 cookie)
117{
118 unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
119
120
121
122
123
124 return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
125}
126
127static inline void
128lnet_res_lock(int cpt)
129{
130 cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
131}
132
133static inline void
134lnet_res_unlock(int cpt)
135{
136 cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
137}
138
139static inline int
140lnet_res_lock_current(void)
141{
142 int cpt = lnet_cpt_current();
143
144 lnet_res_lock(cpt);
145 return cpt;
146}
147
148static inline void
149lnet_net_lock(int cpt)
150{
151 cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
152}
153
154static inline void
155lnet_net_unlock(int cpt)
156{
157 cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
158}
159
160static inline int
161lnet_net_lock_current(void)
162{
163 int cpt = lnet_cpt_current();
164
165 lnet_net_lock(cpt);
166 return cpt;
167}
168
169#define LNET_LOCK() lnet_net_lock(LNET_LOCK_EX)
170#define LNET_UNLOCK() lnet_net_unlock(LNET_LOCK_EX)
171
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)
178
179#define MAX_PORTALS 64
180
181static inline lnet_eq_t *
182lnet_eq_alloc(void)
183{
184 lnet_eq_t *eq;
185
186 LIBCFS_ALLOC(eq, sizeof(*eq));
187 return eq;
188}
189
190static inline void
191lnet_eq_free(lnet_eq_t *eq)
192{
193 LIBCFS_FREE(eq, sizeof(*eq));
194}
195
196static inline lnet_libmd_t *
197lnet_md_alloc(lnet_md_t *umd)
198{
199 lnet_libmd_t *md;
200 unsigned int size;
201 unsigned int niov;
202
203 if (umd->options & LNET_MD_KIOV) {
204 niov = umd->length;
205 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
206 } else {
207 niov = umd->options & LNET_MD_IOVEC ? umd->length : 1;
208 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
209 }
210
211 LIBCFS_ALLOC(md, size);
212
213 if (md) {
214
215 md->md_options = umd->options;
216 md->md_niov = niov;
217 INIT_LIST_HEAD(&md->md_list);
218 }
219
220 return md;
221}
222
223static inline void
224lnet_md_free(lnet_libmd_t *md)
225{
226 unsigned int size;
227
228 if (md->md_options & LNET_MD_KIOV)
229 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
230 else
231 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
232
233 LIBCFS_FREE(md, size);
234}
235
236static inline lnet_me_t *
237lnet_me_alloc(void)
238{
239 lnet_me_t *me;
240
241 LIBCFS_ALLOC(me, sizeof(*me));
242 return me;
243}
244
245static inline void
246lnet_me_free(lnet_me_t *me)
247{
248 LIBCFS_FREE(me, sizeof(*me));
249}
250
251static inline lnet_msg_t *
252lnet_msg_alloc(void)
253{
254 lnet_msg_t *msg;
255
256 LIBCFS_ALLOC(msg, sizeof(*msg));
257
258
259 return msg;
260}
261
262static inline void
263lnet_msg_free(lnet_msg_t *msg)
264{
265 LASSERT(!msg->msg_onactivelist);
266 LIBCFS_FREE(msg, sizeof(*msg));
267}
268
269lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
270 __u64 cookie);
271void lnet_res_lh_initialize(struct lnet_res_container *rec,
272 lnet_libhandle_t *lh);
273static inline void
274lnet_res_lh_invalidate(lnet_libhandle_t *lh)
275{
276
277 list_del(&lh->lh_hash_chain);
278}
279
280static inline void
281lnet_eq2handle(lnet_handle_eq_t *handle, lnet_eq_t *eq)
282{
283 if (!eq) {
284 LNetInvalidateHandle(handle);
285 return;
286 }
287
288 handle->cookie = eq->eq_lh.lh_cookie;
289}
290
291static inline lnet_eq_t *
292lnet_handle2eq(lnet_handle_eq_t *handle)
293{
294 lnet_libhandle_t *lh;
295
296 lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
297 if (!lh)
298 return NULL;
299
300 return lh_entry(lh, lnet_eq_t, eq_lh);
301}
302
303static inline void
304lnet_md2handle(lnet_handle_md_t *handle, lnet_libmd_t *md)
305{
306 handle->cookie = md->md_lh.lh_cookie;
307}
308
309static inline lnet_libmd_t *
310lnet_handle2md(lnet_handle_md_t *handle)
311{
312
313 lnet_libhandle_t *lh;
314 int cpt;
315
316 cpt = lnet_cpt_of_cookie(handle->cookie);
317 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
318 handle->cookie);
319 if (!lh)
320 return NULL;
321
322 return lh_entry(lh, lnet_libmd_t, md_lh);
323}
324
325static inline lnet_libmd_t *
326lnet_wire_handle2md(lnet_handle_wire_t *wh)
327{
328
329 lnet_libhandle_t *lh;
330 int cpt;
331
332 if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
333 return NULL;
334
335 cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
336 lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
337 wh->wh_object_cookie);
338 if (!lh)
339 return NULL;
340
341 return lh_entry(lh, lnet_libmd_t, md_lh);
342}
343
344static inline void
345lnet_me2handle(lnet_handle_me_t *handle, lnet_me_t *me)
346{
347 handle->cookie = me->me_lh.lh_cookie;
348}
349
350static inline lnet_me_t *
351lnet_handle2me(lnet_handle_me_t *handle)
352{
353
354 lnet_libhandle_t *lh;
355 int cpt;
356
357 cpt = lnet_cpt_of_cookie(handle->cookie);
358 lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
359 handle->cookie);
360 if (!lh)
361 return NULL;
362
363 return lh_entry(lh, lnet_me_t, me_lh);
364}
365
366static inline void
367lnet_peer_addref_locked(lnet_peer_t *lp)
368{
369 LASSERT(lp->lp_refcount > 0);
370 lp->lp_refcount++;
371}
372
373void lnet_destroy_peer_locked(lnet_peer_t *lp);
374
375static inline void
376lnet_peer_decref_locked(lnet_peer_t *lp)
377{
378 LASSERT(lp->lp_refcount > 0);
379 lp->lp_refcount--;
380 if (!lp->lp_refcount)
381 lnet_destroy_peer_locked(lp);
382}
383
384static inline int
385lnet_isrouter(lnet_peer_t *lp)
386{
387 return lp->lp_rtr_refcount ? 1 : 0;
388}
389
390static inline void
391lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
392{
393 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
394 LASSERT(*ni->ni_refs[cpt] >= 0);
395
396 (*ni->ni_refs[cpt])++;
397}
398
399static inline void
400lnet_ni_addref(lnet_ni_t *ni)
401{
402 lnet_net_lock(0);
403 lnet_ni_addref_locked(ni, 0);
404 lnet_net_unlock(0);
405}
406
407static inline void
408lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
409{
410 LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
411 LASSERT(*ni->ni_refs[cpt] > 0);
412
413 (*ni->ni_refs[cpt])--;
414}
415
416static inline void
417lnet_ni_decref(lnet_ni_t *ni)
418{
419 lnet_net_lock(0);
420 lnet_ni_decref_locked(ni, 0);
421 lnet_net_unlock(0);
422}
423
424void lnet_ni_free(lnet_ni_t *ni);
425lnet_ni_t *
426lnet_ni_alloc(__u32 net, struct cfs_expr_list *el, struct list_head *nilist);
427
428static inline int
429lnet_nid2peerhash(lnet_nid_t nid)
430{
431 return hash_long(nid, LNET_PEER_HASH_BITS);
432}
433
434static inline struct list_head *
435lnet_net2rnethash(__u32 net)
436{
437 return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
438 LNET_NETTYP(net)) &
439 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
440}
441
442extern lnd_t the_lolnd;
443extern int avoid_asym_router_failure;
444
445int lnet_cpt_of_nid_locked(lnet_nid_t nid);
446int lnet_cpt_of_nid(lnet_nid_t nid);
447lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
448lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
449lnet_ni_t *lnet_net2ni(__u32 net);
450
451extern int portal_rotor;
452
453int lnet_lib_init(void);
454void lnet_lib_exit(void);
455
456int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, unsigned long when);
457void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive,
458 unsigned long when);
459int lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway_nid,
460 unsigned int priority);
461int lnet_check_routes(void);
462int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
463void lnet_destroy_routes(void);
464int lnet_get_route(int idx, __u32 *net, __u32 *hops,
465 lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
466int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg);
467
468void lnet_router_debugfs_init(void);
469void lnet_router_debugfs_fini(void);
470int lnet_rtrpools_alloc(int im_a_router);
471void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages);
472int lnet_rtrpools_adjust(int tiny, int small, int large);
473int lnet_rtrpools_enable(void);
474void lnet_rtrpools_disable(void);
475void lnet_rtrpools_free(int keep_pools);
476lnet_remotenet_t *lnet_find_net_locked(__u32 net);
477int lnet_dyn_add_ni(lnet_pid_t requested_pid,
478 struct lnet_ioctl_config_data *conf);
479int lnet_dyn_del_ni(__u32 net);
480int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason);
481
482int lnet_islocalnid(lnet_nid_t nid);
483int lnet_islocalnet(__u32 net);
484
485void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
486 unsigned int offset, unsigned int mlen);
487void lnet_msg_detach_md(lnet_msg_t *msg, int status);
488void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
489void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
490void lnet_msg_commit(lnet_msg_t *msg, int cpt);
491void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
492
493void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
494void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
495 unsigned int offset, unsigned int len);
496int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
497void lnet_return_tx_credits_locked(lnet_msg_t *msg);
498void lnet_return_rx_credits_locked(lnet_msg_t *msg);
499void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp);
500void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
501
502
503
504static inline int
505lnet_ptl_is_lazy(lnet_portal_t *ptl)
506{
507 return !!(ptl->ptl_options & LNET_PTL_LAZY);
508}
509
510static inline int
511lnet_ptl_is_unique(lnet_portal_t *ptl)
512{
513 return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
514}
515
516static inline int
517lnet_ptl_is_wildcard(lnet_portal_t *ptl)
518{
519 return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
520}
521
522static inline void
523lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
524{
525 ptl->ptl_options |= opt;
526}
527
528static inline void
529lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
530{
531 ptl->ptl_options &= ~opt;
532}
533
534
535struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
536 lnet_process_id_t id, __u64 mbits);
537struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
538 lnet_process_id_t id, __u64 mbits,
539 __u64 ignore_bits,
540 lnet_ins_pos_t pos);
541int lnet_mt_match_md(struct lnet_match_table *mtable,
542 struct lnet_match_info *info, struct lnet_msg *msg);
543
544
545void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
546 struct list_head *matches, struct list_head *drops);
547void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
548int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
549
550
551int lnet_portals_create(void);
552void lnet_portals_destroy(void);
553
554
555int lnet_parse(lnet_ni_t *ni, lnet_hdr_t *hdr,
556 lnet_nid_t fromnid, void *private, int rdma_req);
557int lnet_parse_local(lnet_ni_t *ni, lnet_msg_t *msg);
558int lnet_parse_forward_locked(lnet_ni_t *ni, lnet_msg_t *msg);
559
560void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
561 unsigned int offset, unsigned int mlen, unsigned int rlen);
562void lnet_ni_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg,
563 int delayed, unsigned int offset,
564 unsigned int mlen, unsigned int rlen);
565
566lnet_msg_t *lnet_create_reply_msg(lnet_ni_t *ni, lnet_msg_t *get_msg);
567void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
568
569void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
570
571void lnet_drop_message(lnet_ni_t *ni, int cpt, void *private,
572 unsigned int nob);
573void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
574void lnet_recv_delayed_msg_list(struct list_head *head);
575
576int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
577void lnet_msg_container_cleanup(struct lnet_msg_container *container);
578void lnet_msg_containers_destroy(void);
579int lnet_msg_containers_create(void);
580
581char *lnet_msgtyp2str(int type);
582void lnet_print_hdr(lnet_hdr_t *hdr);
583int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
584
585
586
587int lnet_fault_ctl(int cmd, struct libcfs_ioctl_data *data);
588int lnet_fault_init(void);
589void lnet_fault_fini(void);
590
591bool lnet_drop_rule_match(lnet_hdr_t *hdr);
592
593int lnet_delay_rule_add(struct lnet_fault_attr *attr);
594int lnet_delay_rule_del(lnet_nid_t src, lnet_nid_t dst, bool shutdown);
595int lnet_delay_rule_list(int pos, struct lnet_fault_attr *attr,
596 struct lnet_fault_stat *stat);
597void lnet_delay_rule_reset(void);
598void lnet_delay_rule_check(void);
599bool lnet_delay_rule_match_locked(lnet_hdr_t *hdr, struct lnet_msg *msg);
600
601
602
603void lnet_counters_get(lnet_counters_t *counters);
604void lnet_counters_reset(void);
605
606unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
607int lnet_extract_iov(int dst_niov, struct kvec *dst,
608 int src_niov, const struct kvec *src,
609 unsigned int offset, unsigned int len);
610
611unsigned int lnet_kiov_nob(unsigned int niov, lnet_kiov_t *iov);
612int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst,
613 int src_niov, const lnet_kiov_t *src,
614 unsigned int offset, unsigned int len);
615
616void lnet_copy_iov2iter(struct iov_iter *to,
617 unsigned int nsiov, const struct kvec *siov,
618 unsigned int soffset, unsigned int nob);
619void lnet_copy_kiov2iter(struct iov_iter *to,
620 unsigned int nkiov, const lnet_kiov_t *kiov,
621 unsigned int kiovoffset, unsigned int nob);
622
623void lnet_me_unlink(lnet_me_t *me);
624
625void lnet_md_unlink(lnet_libmd_t *md);
626void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
627
628void lnet_register_lnd(lnd_t *lnd);
629void lnet_unregister_lnd(lnd_t *lnd);
630
631int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid,
632 __u32 local_ip, __u32 peer_ip, int peer_port);
633void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
634 __u32 peer_ip, int port);
635int lnet_count_acceptor_nis(void);
636int lnet_acceptor_timeout(void);
637int lnet_acceptor_port(void);
638
639int lnet_count_acceptor_nis(void);
640int lnet_acceptor_port(void);
641
642int lnet_acceptor_start(void);
643void lnet_acceptor_stop(void);
644
645int lnet_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
646int lnet_ipif_enumerate(char ***names);
647void lnet_ipif_free_enumeration(char **names, int n);
648int lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
649int lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
650int lnet_sock_getaddr(struct socket *socket, bool remote, __u32 *ip, int *port);
651int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
652int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
653
654int lnet_sock_listen(struct socket **sockp, __u32 ip, int port, int backlog);
655int lnet_sock_accept(struct socket **newsockp, struct socket *sock);
656int lnet_sock_connect(struct socket **sockp, int *fatal,
657 __u32 local_ip, int local_port,
658 __u32 peer_ip, int peer_port);
659void libcfs_sock_release(struct socket *sock);
660
661int lnet_peers_start_down(void);
662int lnet_peer_buffer_credits(lnet_ni_t *ni);
663
664int lnet_router_checker_start(void);
665void lnet_router_checker_stop(void);
666void lnet_router_ni_update_locked(lnet_peer_t *gw, __u32 net);
667void lnet_swap_pinginfo(lnet_ping_info_t *info);
668
669int lnet_parse_ip2nets(char **networksp, char *ip2nets);
670int lnet_parse_routes(char *route_str, int *im_a_router);
671int lnet_parse_networks(struct list_head *nilist, char *networks);
672int lnet_net_unique(__u32 net, struct list_head *nilist);
673
674int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
675lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
676 lnet_nid_t nid);
677void lnet_peer_tables_cleanup(lnet_ni_t *ni);
678void lnet_peer_tables_destroy(void);
679int lnet_peer_tables_create(void);
680void lnet_debug_peer(lnet_nid_t nid);
681int lnet_get_peer_info(__u32 peer_index, __u64 *nid,
682 char alivness[LNET_MAX_STR_LEN],
683 __u32 *cpt_iter, __u32 *refcount,
684 __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits,
685 __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis,
686 __u32 *peer_tx_qnob);
687
688static inline void
689lnet_peer_set_alive(lnet_peer_t *lp)
690{
691 lp->lp_last_query = jiffies;
692 lp->lp_last_alive = jiffies;
693 if (!lp->lp_alive)
694 lnet_notify_locked(lp, 0, 1, lp->lp_last_alive);
695}
696
697#endif
698