drivers/staging/lustre/include/linux/lnet/lib-lnet.h

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2012, 2015, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Seagate, Inc.
  31  *
  32  * lnet/include/lnet/lib-lnet.h
  33  */
  34
  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
  43 extern lnet_t   the_lnet;       /* THE network */
  44
  45 #if (BITS_PER_LONG == 32)
  46 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
  47 #define LNET_CPT_MAX_BITS       1
  48
  49 #else /* 64-bit system */
  50 /*
  51  * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
  52  * under risk of consuming all lh_cookie.
  53  */
  54 #define LNET_CPT_MAX_BITS       8
  55 #endif /* BITS_PER_LONG == 32 */
  56
  57 /* max allowed CPT number */
  58 #define LNET_CPT_MAX            (1 << LNET_CPT_MAX_BITS)
  59
  60 #define LNET_CPT_NUMBER         (the_lnet.ln_cpt_number)
  61 #define LNET_CPT_BITS           (the_lnet.ln_cpt_bits)
  62 #define LNET_CPT_MASK           ((1ULL << LNET_CPT_BITS) - 1)
  63
  64 /** exclusive lock */
  65 #define LNET_LOCK_EX            CFS_PERCPT_LOCK_EX
  66
  67 static inline int lnet_is_route_alive(lnet_route_t *route)
  68 {
  69         /* gateway is down */
  70         if (!route->lr_gateway->lp_alive)
  71                 return 0;
  72         /* no NI status, assume it's alive */
  73         if ((route->lr_gateway->lp_ping_feats &
  74              LNET_PING_FEAT_NI_STATUS) == 0)
  75                 return 1;
  76         /* has NI status, check # down NIs */
  77         return route->lr_downis == 0;
  78 }
  79
  80 static inline int lnet_is_wire_handle_none(lnet_handle_wire_t *wh)
  81 {
  82         return (wh->wh_interface_cookie == LNET_WIRE_HANDLE_COOKIE_NONE &&
  83                 wh->wh_object_cookie == LNET_WIRE_HANDLE_COOKIE_NONE);
  84 }
  85
  86 static inline int lnet_md_exhausted(lnet_libmd_t *md)
  87 {
  88         return (!md->md_threshold ||
  89                 ((md->md_options & LNET_MD_MAX_SIZE) &&
  90                  md->md_offset + md->md_max_size > md->md_length));
  91 }
  92
  93 static inline int lnet_md_unlinkable(lnet_libmd_t *md)
  94 {
  95         /*
  96          * Should unlink md when its refcount is 0 and either:
  97          *  - md has been flagged for deletion (by auto unlink or
  98          *    LNetM[DE]Unlink, in the latter case md may not be exhausted).
  99          *  - auto unlink is on and md is exhausted.
 100          */
 101         if (md->md_refcount)
 102                 return 0;
 103
 104         if (md->md_flags & LNET_MD_FLAG_ZOMBIE)
 105                 return 1;
 106
 107         return ((md->md_flags & LNET_MD_FLAG_AUTO_UNLINK) &&
 108                 lnet_md_exhausted(md));
 109 }
 110
 111 #define lnet_cpt_table()        (the_lnet.ln_cpt_table)
 112 #define lnet_cpt_current()      cfs_cpt_current(the_lnet.ln_cpt_table, 1)
 113
 114 static inline int
 115 lnet_cpt_of_cookie(__u64 cookie)
 116 {
 117         unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
 118
 119         /*
 120          * LNET_CPT_NUMBER doesn't have to be power2, which means we can
 121          * get illegal cpt from it's invalid cookie
 122          */
 123         return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
 124 }
 125
 126 static inline void
 127 lnet_res_lock(int cpt)
 128 {
 129         cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
 130 }
 131
 132 static inline void
 133 lnet_res_unlock(int cpt)
 134 {
 135         cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
 136 }
 137
 138 static inline int
 139 lnet_res_lock_current(void)
 140 {
 141         int cpt = lnet_cpt_current();
 142
 143         lnet_res_lock(cpt);
 144         return cpt;
 145 }
 146
 147 static inline void
 148 lnet_net_lock(int cpt)
 149 {
 150         cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
 151 }
 152
 153 static inline void
 154 lnet_net_unlock(int cpt)
 155 {
 156         cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
 157 }
 158
 159 static inline int
 160 lnet_net_lock_current(void)
 161 {
 162         int cpt = lnet_cpt_current();
 163
 164         lnet_net_lock(cpt);
 165         return cpt;
 166 }
 167
 168 #define LNET_LOCK()             lnet_net_lock(LNET_LOCK_EX)
 169 #define LNET_UNLOCK()           lnet_net_unlock(LNET_LOCK_EX)
 170
 171 #define lnet_ptl_lock(ptl)      spin_lock(&(ptl)->ptl_lock)
 172 #define lnet_ptl_unlock(ptl)    spin_unlock(&(ptl)->ptl_lock)
 173 #define lnet_eq_wait_lock()     spin_lock(&the_lnet.ln_eq_wait_lock)
 174 #define lnet_eq_wait_unlock()   spin_unlock(&the_lnet.ln_eq_wait_lock)
 175 #define lnet_ni_lock(ni)        spin_lock(&(ni)->ni_lock)
 176 #define lnet_ni_unlock(ni)      spin_unlock(&(ni)->ni_lock)
 177
 178 #define MAX_PORTALS             64
 179
 180 static inline lnet_eq_t *
 181 lnet_eq_alloc(void)
 182 {
 183         lnet_eq_t *eq;
 184
 185         LIBCFS_ALLOC(eq, sizeof(*eq));
 186         return eq;
 187 }
 188
 189 static inline void
 190 lnet_eq_free(lnet_eq_t *eq)
 191 {
 192         LIBCFS_FREE(eq, sizeof(*eq));
 193 }
 194
 195 static inline lnet_libmd_t *
 196 lnet_md_alloc(lnet_md_t *umd)
 197 {
 198         lnet_libmd_t *md;
 199         unsigned int size;
 200         unsigned int niov;
 201
 202         if (umd->options & LNET_MD_KIOV) {
 203                 niov = umd->length;
 204                 size = offsetof(lnet_libmd_t, md_iov.kiov[niov]);
 205         } else {
 206                 niov = umd->options & LNET_MD_IOVEC ? umd->length : 1;
 207                 size = offsetof(lnet_libmd_t, md_iov.iov[niov]);
 208         }
 209
 210         LIBCFS_ALLOC(md, size);
 211
 212         if (md) {
 213                 /* Set here in case of early free */
 214                 md->md_options = umd->options;
 215                 md->md_niov = niov;
 216                 INIT_LIST_HEAD(&md->md_list);
 217         }
 218
 219         return md;
 220 }
 221
 222 static inline void
 223 lnet_md_free(lnet_libmd_t *md)
 224 {
 225         unsigned int size;
 226
 227         if (md->md_options & LNET_MD_KIOV)
 228                 size = offsetof(lnet_libmd_t, md_iov.kiov[md->md_niov]);
 229         else
 230                 size = offsetof(lnet_libmd_t, md_iov.iov[md->md_niov]);
 231
 232         LIBCFS_FREE(md, size);
 233 }
 234
 235 static inline lnet_me_t *
 236 lnet_me_alloc(void)
 237 {
 238         lnet_me_t *me;
 239
 240         LIBCFS_ALLOC(me, sizeof(*me));
 241         return me;
 242 }
 243
 244 static inline void
 245 lnet_me_free(lnet_me_t *me)
 246 {
 247         LIBCFS_FREE(me, sizeof(*me));
 248 }
 249
 250 static inline lnet_msg_t *
 251 lnet_msg_alloc(void)
 252 {
 253         lnet_msg_t *msg;
 254
 255         LIBCFS_ALLOC(msg, sizeof(*msg));
 256
 257         /* no need to zero, LIBCFS_ALLOC does for us */
 258         return msg;
 259 }
 260
 261 static inline void
 262 lnet_msg_free(lnet_msg_t *msg)
 263 {
 264         LASSERT(!msg->msg_onactivelist);
 265         LIBCFS_FREE(msg, sizeof(*msg));
 266 }
 267
 268 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
 269                                      __u64 cookie);
 270 void lnet_res_lh_initialize(struct lnet_res_container *rec,
 271                             lnet_libhandle_t *lh);
 272 static inline void
 273 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
 274 {
 275         /* NB: cookie is still useful, don't reset it */
 276         list_del(&lh->lh_hash_chain);
 277 }
 278
 279 static inline void
 280 lnet_eq2handle(lnet_handle_eq_t *handle, lnet_eq_t *eq)
 281 {
 282         if (!eq) {
 283                 LNetInvalidateHandle(handle);
 284                 return;
 285         }
 286
 287         handle->cookie = eq->eq_lh.lh_cookie;
 288 }
 289
 290 static inline lnet_eq_t *
 291 lnet_handle2eq(lnet_handle_eq_t *handle)
 292 {
 293         lnet_libhandle_t *lh;
 294
 295         lh = lnet_res_lh_lookup(&the_lnet.ln_eq_container, handle->cookie);
 296         if (!lh)
 297                 return NULL;
 298
 299         return lh_entry(lh, lnet_eq_t, eq_lh);
 300 }
 301
 302 static inline void
 303 lnet_md2handle(lnet_handle_md_t *handle, lnet_libmd_t *md)
 304 {
 305         handle->cookie = md->md_lh.lh_cookie;
 306 }
 307
 308 static inline lnet_libmd_t *
 309 lnet_handle2md(lnet_handle_md_t *handle)
 310 {
 311         /* ALWAYS called with resource lock held */
 312         lnet_libhandle_t *lh;
 313         int cpt;
 314
 315         cpt = lnet_cpt_of_cookie(handle->cookie);
 316         lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
 317                                 handle->cookie);
 318         if (!lh)
 319                 return NULL;
 320
 321         return lh_entry(lh, lnet_libmd_t, md_lh);
 322 }
 323
 324 static inline lnet_libmd_t *
 325 lnet_wire_handle2md(lnet_handle_wire_t *wh)
 326 {
 327         /* ALWAYS called with resource lock held */
 328         lnet_libhandle_t *lh;
 329         int cpt;
 330
 331         if (wh->wh_interface_cookie != the_lnet.ln_interface_cookie)
 332                 return NULL;
 333
 334         cpt = lnet_cpt_of_cookie(wh->wh_object_cookie);
 335         lh = lnet_res_lh_lookup(the_lnet.ln_md_containers[cpt],
 336                                 wh->wh_object_cookie);
 337         if (!lh)
 338                 return NULL;
 339
 340         return lh_entry(lh, lnet_libmd_t, md_lh);
 341 }
 342
 343 static inline void
 344 lnet_me2handle(lnet_handle_me_t *handle, lnet_me_t *me)
 345 {
 346         handle->cookie = me->me_lh.lh_cookie;
 347 }
 348
 349 static inline lnet_me_t *
 350 lnet_handle2me(lnet_handle_me_t *handle)
 351 {
 352         /* ALWAYS called with resource lock held */
 353         lnet_libhandle_t *lh;
 354         int cpt;
 355
 356         cpt = lnet_cpt_of_cookie(handle->cookie);
 357         lh = lnet_res_lh_lookup(the_lnet.ln_me_containers[cpt],
 358                                 handle->cookie);
 359         if (!lh)
 360                 return NULL;
 361
 362         return lh_entry(lh, lnet_me_t, me_lh);
 363 }
 364
 365 static inline void
 366 lnet_peer_addref_locked(lnet_peer_t *lp)
 367 {
 368         LASSERT(lp->lp_refcount > 0);
 369         lp->lp_refcount++;
 370 }
 371
 372 void lnet_destroy_peer_locked(lnet_peer_t *lp);
 373
 374 static inline void
 375 lnet_peer_decref_locked(lnet_peer_t *lp)
 376 {
 377         LASSERT(lp->lp_refcount > 0);
 378         lp->lp_refcount--;
 379         if (!lp->lp_refcount)
 380                 lnet_destroy_peer_locked(lp);
 381 }
 382
 383 static inline int
 384 lnet_isrouter(lnet_peer_t *lp)
 385 {
 386         return lp->lp_rtr_refcount ? 1 : 0;
 387 }
 388
 389 static inline void
 390 lnet_ni_addref_locked(lnet_ni_t *ni, int cpt)
 391 {
 392         LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
 393         LASSERT(*ni->ni_refs[cpt] >= 0);
 394
 395         (*ni->ni_refs[cpt])++;
 396 }
 397
 398 static inline void
 399 lnet_ni_addref(lnet_ni_t *ni)
 400 {
 401         lnet_net_lock(0);
 402         lnet_ni_addref_locked(ni, 0);
 403         lnet_net_unlock(0);
 404 }
 405
 406 static inline void
 407 lnet_ni_decref_locked(lnet_ni_t *ni, int cpt)
 408 {
 409         LASSERT(cpt >= 0 && cpt < LNET_CPT_NUMBER);
 410         LASSERT(*ni->ni_refs[cpt] > 0);
 411
 412         (*ni->ni_refs[cpt])--;
 413 }
 414
 415 static inline void
 416 lnet_ni_decref(lnet_ni_t *ni)
 417 {
 418         lnet_net_lock(0);
 419         lnet_ni_decref_locked(ni, 0);
 420         lnet_net_unlock(0);
 421 }
 422
 423 void lnet_ni_free(lnet_ni_t *ni);
 424
 425 static inline int
 426 lnet_nid2peerhash(lnet_nid_t nid)
 427 {
 428         return hash_long(nid, LNET_PEER_HASH_BITS);
 429 }
 430
 431 static inline struct list_head *
 432 lnet_net2rnethash(__u32 net)
 433 {
 434         return &the_lnet.ln_remote_nets_hash[(LNET_NETNUM(net) +
 435                 LNET_NETTYP(net)) &
 436                 ((1U << the_lnet.ln_remote_nets_hbits) - 1)];
 437 }
 438
 439 extern lnd_t the_lolnd;
 440 extern int avoid_asym_router_failure;
 441
 442 int lnet_cpt_of_nid_locked(lnet_nid_t nid);
 443 int lnet_cpt_of_nid(lnet_nid_t nid);
 444 lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
 445 lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
 446 lnet_ni_t *lnet_net2ni(__u32 net);
 447
 448 int lnet_init(void);
 449 void lnet_fini(void);
 450
 451 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, unsigned long when);
 452 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive,
 453                         unsigned long when);
 454 int lnet_add_route(__u32 net, unsigned int hops, lnet_nid_t gateway_nid,
 455                    unsigned int priority);
 456 int lnet_check_routes(void);
 457 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
 458 void lnet_destroy_routes(void);
 459 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
 460                    lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
 461 void lnet_router_debugfs_init(void);
 462 void lnet_router_debugfs_fini(void);
 463 int  lnet_rtrpools_alloc(int im_a_router);
 464 void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages);
 465 int lnet_rtrpools_adjust(int tiny, int small, int large);
 466 int lnet_rtrpools_enable(void);
 467 void lnet_rtrpools_disable(void);
 468 void lnet_rtrpools_free(int keep_pools);
 469 lnet_remotenet_t *lnet_find_net_locked(__u32 net);
 470
 471 int lnet_islocalnid(lnet_nid_t nid);
 472 int lnet_islocalnet(__u32 net);
 473
 474 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
 475                         unsigned int offset, unsigned int mlen);
 476 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
 477 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
 478 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
 479 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
 480 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
 481
 482 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
 483 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
 484                     unsigned int offset, unsigned int len);
 485 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
 486 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
 487 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
 488 void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp);
 489 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
 490
 491 /* portals functions */
 492 /* portals attributes */
 493 static inline int
 494 lnet_ptl_is_lazy(lnet_portal_t *ptl)
 495 {
 496         return !!(ptl->ptl_options & LNET_PTL_LAZY);
 497 }
 498
 499 static inline int
 500 lnet_ptl_is_unique(lnet_portal_t *ptl)
 501 {
 502         return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
 503 }
 504
 505 static inline int
 506 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
 507 {
 508         return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
 509 }
 510
 511 static inline void
 512 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
 513 {
 514         ptl->ptl_options |= opt;
 515 }
 516
 517 static inline void
 518 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
 519 {
 520         ptl->ptl_options &= ~opt;
 521 }
 522
 523 /* match-table functions */
 524 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
 525                                      lnet_process_id_t id, __u64 mbits);
 526 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
 527                                            lnet_process_id_t id, __u64 mbits,
 528                                            __u64 ignore_bits,
 529                                            lnet_ins_pos_t pos);
 530 int lnet_mt_match_md(struct lnet_match_table *mtable,
 531                      struct lnet_match_info *info, struct lnet_msg *msg);
 532
 533 /* portals match/attach functions */
 534 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
 535                         struct list_head *matches, struct list_head *drops);
 536 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
 537 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
 538
 539 /* initialized and finalize portals */
 540 int lnet_portals_create(void);
 541 void lnet_portals_destroy(void);
 542
 543 /* message functions */
 544 int lnet_parse(lnet_ni_t *ni, lnet_hdr_t *hdr,
 545                lnet_nid_t fromnid, void *private, int rdma_req);
 546 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
 547                unsigned int offset, unsigned int mlen, unsigned int rlen);
 548 lnet_msg_t *lnet_create_reply_msg(lnet_ni_t *ni, lnet_msg_t *get_msg);
 549 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
 550
 551 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
 552
 553 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
 554 void lnet_recv_delayed_msg_list(struct list_head *head);
 555
 556 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
 557 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
 558 void lnet_msg_containers_destroy(void);
 559 int lnet_msg_containers_create(void);
 560
 561 char *lnet_msgtyp2str(int type);
 562 void lnet_print_hdr(lnet_hdr_t *hdr);
 563 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
 564
 565 void lnet_counters_get(lnet_counters_t *counters);
 566 void lnet_counters_reset(void);
 567
 568 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
 569 int lnet_extract_iov(int dst_niov, struct kvec *dst,
 570                      int src_niov, struct kvec *src,
 571                       unsigned int offset, unsigned int len);
 572
 573 unsigned int lnet_kiov_nob(unsigned int niov, lnet_kiov_t *iov);
 574 int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst,
 575                       int src_niov, lnet_kiov_t *src,
 576                       unsigned int offset, unsigned int len);
 577
 578 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
 579                        unsigned int doffset,
 580                         unsigned int nsiov, struct kvec *siov,
 581                         unsigned int soffset, unsigned int nob);
 582 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
 583                         unsigned int iovoffset,
 584                          unsigned int nkiov, lnet_kiov_t *kiov,
 585                          unsigned int kiovoffset, unsigned int nob);
 586 void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
 587                         unsigned int kiovoffset,
 588                          unsigned int niov, struct kvec *iov,
 589                          unsigned int iovoffset, unsigned int nob);
 590 void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov,
 591                          unsigned int doffset,
 592                           unsigned int nskiov, lnet_kiov_t *skiov,
 593                           unsigned int soffset, unsigned int nob);
 594
 595 static inline void
 596 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
 597                    unsigned int nsiov, struct kvec *siov, unsigned int soffset,
 598                    unsigned int nob)
 599 {
 600         struct kvec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
 601
 602         lnet_copy_iov2iov(1, &diov, doffset,
 603                           nsiov, siov, soffset, nob);
 604 }
 605
 606 static inline void
 607 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
 608                     unsigned int nsiov, lnet_kiov_t *skiov,
 609                     unsigned int soffset, unsigned int nob)
 610 {
 611         struct kvec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
 612
 613         lnet_copy_kiov2iov(1, &diov, doffset,
 614                            nsiov, skiov, soffset, nob);
 615 }
 616
 617 static inline void
 618 lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
 619                    int slen, void *src, unsigned int soffset, unsigned int nob)
 620 {
 621         struct kvec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
 622
 623         lnet_copy_iov2iov(ndiov, diov, doffset,
 624                           1, &siov, soffset, nob);
 625 }
 626
 627 static inline void
 628 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov,
 629                     unsigned int doffset, int slen, void *src,
 630                     unsigned int soffset, unsigned int nob)
 631 {
 632         struct kvec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
 633
 634         lnet_copy_iov2kiov(ndiov, dkiov, doffset,
 635                            1, &siov, soffset, nob);
 636 }
 637
 638 void lnet_me_unlink(lnet_me_t *me);
 639
 640 void lnet_md_unlink(lnet_libmd_t *md);
 641 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
 642
 643 void lnet_register_lnd(lnd_t *lnd);
 644 void lnet_unregister_lnd(lnd_t *lnd);
 645
 646 int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid,
 647                  __u32 local_ip, __u32 peer_ip, int peer_port);
 648 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
 649                                 __u32 peer_ip, int port);
 650 int lnet_count_acceptor_nis(void);
 651 int lnet_acceptor_timeout(void);
 652 int lnet_acceptor_port(void);
 653
 654 int lnet_count_acceptor_nis(void);
 655 int lnet_acceptor_port(void);
 656
 657 int lnet_acceptor_start(void);
 658 void lnet_acceptor_stop(void);
 659
 660 int lnet_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
 661 int lnet_ipif_enumerate(char ***names);
 662 void lnet_ipif_free_enumeration(char **names, int n);
 663 int lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
 664 int lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
 665 int lnet_sock_getaddr(struct socket *socket, bool remote, __u32 *ip, int *port);
 666 int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
 667 int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
 668
 669 int lnet_sock_listen(struct socket **sockp, __u32 ip, int port, int backlog);
 670 int lnet_sock_accept(struct socket **newsockp, struct socket *sock);
 671 int lnet_sock_connect(struct socket **sockp, int *fatal,
 672                       __u32 local_ip, int local_port,
 673                       __u32 peer_ip, int peer_port);
 674 void libcfs_sock_release(struct socket *sock);
 675
 676 int lnet_peers_start_down(void);
 677 int lnet_peer_buffer_credits(lnet_ni_t *ni);
 678
 679 int lnet_router_checker_start(void);
 680 void lnet_router_checker_stop(void);
 681 void lnet_router_ni_update_locked(lnet_peer_t *gw, __u32 net);
 682 void lnet_swap_pinginfo(lnet_ping_info_t *info);
 683
 684 int lnet_ping_target_init(void);
 685 void lnet_ping_target_fini(void);
 686
 687 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
 688 int lnet_parse_routes(char *route_str, int *im_a_router);
 689 int lnet_parse_networks(struct list_head *nilist, char *networks);
 690
 691 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
 692 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
 693                                    lnet_nid_t nid);
 694 void lnet_peer_tables_cleanup(lnet_ni_t *ni);
 695 void lnet_peer_tables_destroy(void);
 696 int lnet_peer_tables_create(void);
 697 void lnet_debug_peer(lnet_nid_t nid);
 698
 699 static inline void
 700 lnet_peer_set_alive(lnet_peer_t *lp)
 701 {
 702         lp->lp_last_query = jiffies;
 703         lp->lp_last_alive = jiffies;
 704         if (!lp->lp_alive)
 705                 lnet_notify_locked(lp, 0, 1, lp->lp_last_alive);
 706 }
 707
 708 #endif