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 #include "lib-dlc.h"
  43
  44 extern lnet_t   the_lnet;       /* THE network */
  45
  46 #if (BITS_PER_LONG == 32)
  47 /* 2 CPTs, allowing more CPTs might make us under memory pressure */
  48 #define LNET_CPT_MAX_BITS       1
  49
  50 #else /* 64-bit system */
  51 /*
  52  * 256 CPTs for thousands of CPUs, allowing more CPTs might make us
  53  * under risk of consuming all lh_cookie.
  54  */
  55 #define LNET_CPT_MAX_BITS       8
  56 #endif /* BITS_PER_LONG == 32 */
  57
  58 /* max allowed CPT number */
  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 /** exclusive lock */
  66 #define LNET_LOCK_EX            CFS_PERCPT_LOCK_EX
  67
  68 static inline int lnet_is_route_alive(lnet_route_t *route)
  69 {
  70         /* gateway is down */
  71         if (!route->lr_gateway->lp_alive)
  72                 return 0;
  73         /* no NI status, assume it's alive */
  74         if ((route->lr_gateway->lp_ping_feats &
  75              LNET_PING_FEAT_NI_STATUS) == 0)
  76                 return 1;
  77         /* has NI status, check # down NIs */
  78         return route->lr_downis == 0;
  79 }
  80
  81 static 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
  87 static 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
  94 static inline int lnet_md_unlinkable(lnet_libmd_t *md)
  95 {
  96         /*
  97          * Should unlink md when its refcount is 0 and either:
  98          *  - md has been flagged for deletion (by auto unlink or
  99          *    LNetM[DE]Unlink, in the latter case md may not be exhausted).
 100          *  - auto unlink is on and md is exhausted.
 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
 115 static inline int
 116 lnet_cpt_of_cookie(__u64 cookie)
 117 {
 118         unsigned int cpt = (cookie >> LNET_COOKIE_TYPE_BITS) & LNET_CPT_MASK;
 119
 120         /*
 121          * LNET_CPT_NUMBER doesn't have to be power2, which means we can
 122          * get illegal cpt from it's invalid cookie
 123          */
 124         return cpt < LNET_CPT_NUMBER ? cpt : cpt % LNET_CPT_NUMBER;
 125 }
 126
 127 static inline void
 128 lnet_res_lock(int cpt)
 129 {
 130         cfs_percpt_lock(the_lnet.ln_res_lock, cpt);
 131 }
 132
 133 static inline void
 134 lnet_res_unlock(int cpt)
 135 {
 136         cfs_percpt_unlock(the_lnet.ln_res_lock, cpt);
 137 }
 138
 139 static inline int
 140 lnet_res_lock_current(void)
 141 {
 142         int cpt = lnet_cpt_current();
 143
 144         lnet_res_lock(cpt);
 145         return cpt;
 146 }
 147
 148 static inline void
 149 lnet_net_lock(int cpt)
 150 {
 151         cfs_percpt_lock(the_lnet.ln_net_lock, cpt);
 152 }
 153
 154 static inline void
 155 lnet_net_unlock(int cpt)
 156 {
 157         cfs_percpt_unlock(the_lnet.ln_net_lock, cpt);
 158 }
 159
 160 static inline int
 161 lnet_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
 181 static inline lnet_eq_t *
 182 lnet_eq_alloc(void)
 183 {
 184         lnet_eq_t *eq;
 185
 186         LIBCFS_ALLOC(eq, sizeof(*eq));
 187         return eq;
 188 }
 189
 190 static inline void
 191 lnet_eq_free(lnet_eq_t *eq)
 192 {
 193         LIBCFS_FREE(eq, sizeof(*eq));
 194 }
 195
 196 static inline lnet_libmd_t *
 197 lnet_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                 /* Set here in case of early free */
 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
 223 static inline void
 224 lnet_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
 236 static inline lnet_me_t *
 237 lnet_me_alloc(void)
 238 {
 239         lnet_me_t *me;
 240
 241         LIBCFS_ALLOC(me, sizeof(*me));
 242         return me;
 243 }
 244
 245 static inline void
 246 lnet_me_free(lnet_me_t *me)
 247 {
 248         LIBCFS_FREE(me, sizeof(*me));
 249 }
 250
 251 static inline lnet_msg_t *
 252 lnet_msg_alloc(void)
 253 {
 254         lnet_msg_t *msg;
 255
 256         LIBCFS_ALLOC(msg, sizeof(*msg));
 257
 258         /* no need to zero, LIBCFS_ALLOC does for us */
 259         return msg;
 260 }
 261
 262 static inline void
 263 lnet_msg_free(lnet_msg_t *msg)
 264 {
 265         LASSERT(!msg->msg_onactivelist);
 266         LIBCFS_FREE(msg, sizeof(*msg));
 267 }
 268
 269 lnet_libhandle_t *lnet_res_lh_lookup(struct lnet_res_container *rec,
 270                                      __u64 cookie);
 271 void lnet_res_lh_initialize(struct lnet_res_container *rec,
 272                             lnet_libhandle_t *lh);
 273 static inline void
 274 lnet_res_lh_invalidate(lnet_libhandle_t *lh)
 275 {
 276         /* NB: cookie is still useful, don't reset it */
 277         list_del(&lh->lh_hash_chain);
 278 }
 279
 280 static inline void
 281 lnet_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
 291 static inline lnet_eq_t *
 292 lnet_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
 303 static inline void
 304 lnet_md2handle(lnet_handle_md_t *handle, lnet_libmd_t *md)
 305 {
 306         handle->cookie = md->md_lh.lh_cookie;
 307 }
 308
 309 static inline lnet_libmd_t *
 310 lnet_handle2md(lnet_handle_md_t *handle)
 311 {
 312         /* ALWAYS called with resource lock held */
 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
 325 static inline lnet_libmd_t *
 326 lnet_wire_handle2md(lnet_handle_wire_t *wh)
 327 {
 328         /* ALWAYS called with resource lock held */
 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
 344 static inline void
 345 lnet_me2handle(lnet_handle_me_t *handle, lnet_me_t *me)
 346 {
 347         handle->cookie = me->me_lh.lh_cookie;
 348 }
 349
 350 static inline lnet_me_t *
 351 lnet_handle2me(lnet_handle_me_t *handle)
 352 {
 353         /* ALWAYS called with resource lock held */
 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
 366 static inline void
 367 lnet_peer_addref_locked(lnet_peer_t *lp)
 368 {
 369         LASSERT(lp->lp_refcount > 0);
 370         lp->lp_refcount++;
 371 }
 372
 373 void lnet_destroy_peer_locked(lnet_peer_t *lp);
 374
 375 static inline void
 376 lnet_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
 384 static inline int
 385 lnet_isrouter(lnet_peer_t *lp)
 386 {
 387         return lp->lp_rtr_refcount ? 1 : 0;
 388 }
 389
 390 static inline void
 391 lnet_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
 399 static inline void
 400 lnet_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
 407 static inline void
 408 lnet_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
 416 static inline void
 417 lnet_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
 424 void lnet_ni_free(lnet_ni_t *ni);
 425 lnet_ni_t *
 426 lnet_ni_alloc(__u32 net, struct cfs_expr_list *el, struct list_head *nilist);
 427
 428 static inline int
 429 lnet_nid2peerhash(lnet_nid_t nid)
 430 {
 431         return hash_long(nid, LNET_PEER_HASH_BITS);
 432 }
 433
 434 static inline struct list_head *
 435 lnet_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
 442 extern lnd_t the_lolnd;
 443 extern int avoid_asym_router_failure;
 444
 445 int lnet_cpt_of_nid_locked(lnet_nid_t nid);
 446 int lnet_cpt_of_nid(lnet_nid_t nid);
 447 lnet_ni_t *lnet_nid2ni_locked(lnet_nid_t nid, int cpt);
 448 lnet_ni_t *lnet_net2ni_locked(__u32 net, int cpt);
 449 lnet_ni_t *lnet_net2ni(__u32 net);
 450
 451 extern int portal_rotor;
 452
 453 int lnet_lib_init(void);
 454 void lnet_lib_exit(void);
 455
 456 int lnet_notify(lnet_ni_t *ni, lnet_nid_t peer, int alive, unsigned long when);
 457 void lnet_notify_locked(lnet_peer_t *lp, int notifylnd, int alive,
 458                         unsigned long when);
 459 int lnet_add_route(__u32 net, __u32 hops, lnet_nid_t gateway_nid,
 460                    unsigned int priority);
 461 int lnet_check_routes(void);
 462 int lnet_del_route(__u32 net, lnet_nid_t gw_nid);
 463 void lnet_destroy_routes(void);
 464 int lnet_get_route(int idx, __u32 *net, __u32 *hops,
 465                    lnet_nid_t *gateway, __u32 *alive, __u32 *priority);
 466 int lnet_get_net_config(int idx, __u32 *cpt_count, __u64 *nid,
 467                         int *peer_timeout, int *peer_tx_credits,
 468                         int *peer_rtr_cr, int *max_tx_credits,
 469                         struct lnet_ioctl_net_config *net_config);
 470 int lnet_get_rtr_pool_cfg(int idx, struct lnet_ioctl_pool_cfg *pool_cfg);
 471
 472 void lnet_router_debugfs_init(void);
 473 void lnet_router_debugfs_fini(void);
 474 int  lnet_rtrpools_alloc(int im_a_router);
 475 void lnet_destroy_rtrbuf(lnet_rtrbuf_t *rb, int npages);
 476 int lnet_rtrpools_adjust(int tiny, int small, int large);
 477 int lnet_rtrpools_enable(void);
 478 void lnet_rtrpools_disable(void);
 479 void lnet_rtrpools_free(int keep_pools);
 480 lnet_remotenet_t *lnet_find_net_locked(__u32 net);
 481 int lnet_dyn_add_ni(lnet_pid_t requested_pid, char *nets,
 482                     __s32 peer_timeout, __s32 peer_cr, __s32 peer_buf_cr,
 483                     __s32 credits);
 484 int lnet_dyn_del_ni(__u32 net);
 485 int lnet_clear_lazy_portal(struct lnet_ni *ni, int portal, char *reason);
 486
 487 int lnet_islocalnid(lnet_nid_t nid);
 488 int lnet_islocalnet(__u32 net);
 489
 490 void lnet_msg_attach_md(lnet_msg_t *msg, lnet_libmd_t *md,
 491                         unsigned int offset, unsigned int mlen);
 492 void lnet_msg_detach_md(lnet_msg_t *msg, int status);
 493 void lnet_build_unlink_event(lnet_libmd_t *md, lnet_event_t *ev);
 494 void lnet_build_msg_event(lnet_msg_t *msg, lnet_event_kind_t ev_type);
 495 void lnet_msg_commit(lnet_msg_t *msg, int cpt);
 496 void lnet_msg_decommit(lnet_msg_t *msg, int cpt, int status);
 497
 498 void lnet_eq_enqueue_event(lnet_eq_t *eq, lnet_event_t *ev);
 499 void lnet_prep_send(lnet_msg_t *msg, int type, lnet_process_id_t target,
 500                     unsigned int offset, unsigned int len);
 501 int lnet_send(lnet_nid_t nid, lnet_msg_t *msg, lnet_nid_t rtr_nid);
 502 void lnet_return_tx_credits_locked(lnet_msg_t *msg);
 503 void lnet_return_rx_credits_locked(lnet_msg_t *msg);
 504 void lnet_schedule_blocked_locked(lnet_rtrbufpool_t *rbp);
 505 void lnet_drop_routed_msgs_locked(struct list_head *list, int cpt);
 506
 507 /* portals functions */
 508 /* portals attributes */
 509 static inline int
 510 lnet_ptl_is_lazy(lnet_portal_t *ptl)
 511 {
 512         return !!(ptl->ptl_options & LNET_PTL_LAZY);
 513 }
 514
 515 static inline int
 516 lnet_ptl_is_unique(lnet_portal_t *ptl)
 517 {
 518         return !!(ptl->ptl_options & LNET_PTL_MATCH_UNIQUE);
 519 }
 520
 521 static inline int
 522 lnet_ptl_is_wildcard(lnet_portal_t *ptl)
 523 {
 524         return !!(ptl->ptl_options & LNET_PTL_MATCH_WILDCARD);
 525 }
 526
 527 static inline void
 528 lnet_ptl_setopt(lnet_portal_t *ptl, int opt)
 529 {
 530         ptl->ptl_options |= opt;
 531 }
 532
 533 static inline void
 534 lnet_ptl_unsetopt(lnet_portal_t *ptl, int opt)
 535 {
 536         ptl->ptl_options &= ~opt;
 537 }
 538
 539 /* match-table functions */
 540 struct list_head *lnet_mt_match_head(struct lnet_match_table *mtable,
 541                                      lnet_process_id_t id, __u64 mbits);
 542 struct lnet_match_table *lnet_mt_of_attach(unsigned int index,
 543                                            lnet_process_id_t id, __u64 mbits,
 544                                            __u64 ignore_bits,
 545                                            lnet_ins_pos_t pos);
 546 int lnet_mt_match_md(struct lnet_match_table *mtable,
 547                      struct lnet_match_info *info, struct lnet_msg *msg);
 548
 549 /* portals match/attach functions */
 550 void lnet_ptl_attach_md(lnet_me_t *me, lnet_libmd_t *md,
 551                         struct list_head *matches, struct list_head *drops);
 552 void lnet_ptl_detach_md(lnet_me_t *me, lnet_libmd_t *md);
 553 int lnet_ptl_match_md(struct lnet_match_info *info, struct lnet_msg *msg);
 554
 555 /* initialized and finalize portals */
 556 int lnet_portals_create(void);
 557 void lnet_portals_destroy(void);
 558
 559 /* message functions */
 560 int lnet_parse(lnet_ni_t *ni, lnet_hdr_t *hdr,
 561                lnet_nid_t fromnid, void *private, int rdma_req);
 562 void lnet_recv(lnet_ni_t *ni, void *private, lnet_msg_t *msg, int delayed,
 563                unsigned int offset, unsigned int mlen, unsigned int rlen);
 564 lnet_msg_t *lnet_create_reply_msg(lnet_ni_t *ni, lnet_msg_t *get_msg);
 565 void lnet_set_reply_msg_len(lnet_ni_t *ni, lnet_msg_t *msg, unsigned int len);
 566
 567 void lnet_finalize(lnet_ni_t *ni, lnet_msg_t *msg, int rc);
 568
 569 void lnet_drop_delayed_msg_list(struct list_head *head, char *reason);
 570 void lnet_recv_delayed_msg_list(struct list_head *head);
 571
 572 int lnet_msg_container_setup(struct lnet_msg_container *container, int cpt);
 573 void lnet_msg_container_cleanup(struct lnet_msg_container *container);
 574 void lnet_msg_containers_destroy(void);
 575 int lnet_msg_containers_create(void);
 576
 577 char *lnet_msgtyp2str(int type);
 578 void lnet_print_hdr(lnet_hdr_t *hdr);
 579 int lnet_fail_nid(lnet_nid_t nid, unsigned int threshold);
 580
 581 void lnet_counters_get(lnet_counters_t *counters);
 582 void lnet_counters_reset(void);
 583
 584 unsigned int lnet_iov_nob(unsigned int niov, struct kvec *iov);
 585 int lnet_extract_iov(int dst_niov, struct kvec *dst,
 586                      int src_niov, struct kvec *src,
 587                       unsigned int offset, unsigned int len);
 588
 589 unsigned int lnet_kiov_nob(unsigned int niov, lnet_kiov_t *iov);
 590 int lnet_extract_kiov(int dst_niov, lnet_kiov_t *dst,
 591                       int src_niov, lnet_kiov_t *src,
 592                       unsigned int offset, unsigned int len);
 593
 594 void lnet_copy_iov2iov(unsigned int ndiov, struct kvec *diov,
 595                        unsigned int doffset,
 596                         unsigned int nsiov, struct kvec *siov,
 597                         unsigned int soffset, unsigned int nob);
 598 void lnet_copy_kiov2iov(unsigned int niov, struct kvec *iov,
 599                         unsigned int iovoffset,
 600                          unsigned int nkiov, lnet_kiov_t *kiov,
 601                          unsigned int kiovoffset, unsigned int nob);
 602 void lnet_copy_iov2kiov(unsigned int nkiov, lnet_kiov_t *kiov,
 603                         unsigned int kiovoffset,
 604                          unsigned int niov, struct kvec *iov,
 605                          unsigned int iovoffset, unsigned int nob);
 606 void lnet_copy_kiov2kiov(unsigned int ndkiov, lnet_kiov_t *dkiov,
 607                          unsigned int doffset,
 608                           unsigned int nskiov, lnet_kiov_t *skiov,
 609                           unsigned int soffset, unsigned int nob);
 610
 611 static inline void
 612 lnet_copy_iov2flat(int dlen, void *dest, unsigned int doffset,
 613                    unsigned int nsiov, struct kvec *siov, unsigned int soffset,
 614                    unsigned int nob)
 615 {
 616         struct kvec diov = {/*.iov_base = */ dest, /*.iov_len = */ dlen};
 617
 618         lnet_copy_iov2iov(1, &diov, doffset,
 619                           nsiov, siov, soffset, nob);
 620 }
 621
 622 static inline void
 623 lnet_copy_kiov2flat(int dlen, void *dest, unsigned int doffset,
 624                     unsigned int nsiov, lnet_kiov_t *skiov,
 625                     unsigned int soffset, unsigned int nob)
 626 {
 627         struct kvec diov = {/* .iov_base = */ dest, /* .iov_len = */ dlen};
 628
 629         lnet_copy_kiov2iov(1, &diov, doffset,
 630                            nsiov, skiov, soffset, nob);
 631 }
 632
 633 static inline void
 634 lnet_copy_flat2iov(unsigned int ndiov, struct kvec *diov, unsigned int doffset,
 635                    int slen, void *src, unsigned int soffset, unsigned int nob)
 636 {
 637         struct kvec siov = {/*.iov_base = */ src, /*.iov_len = */slen};
 638
 639         lnet_copy_iov2iov(ndiov, diov, doffset,
 640                           1, &siov, soffset, nob);
 641 }
 642
 643 static inline void
 644 lnet_copy_flat2kiov(unsigned int ndiov, lnet_kiov_t *dkiov,
 645                     unsigned int doffset, int slen, void *src,
 646                     unsigned int soffset, unsigned int nob)
 647 {
 648         struct kvec siov = {/* .iov_base = */ src, /* .iov_len = */ slen};
 649
 650         lnet_copy_iov2kiov(ndiov, dkiov, doffset,
 651                            1, &siov, soffset, nob);
 652 }
 653
 654 void lnet_me_unlink(lnet_me_t *me);
 655
 656 void lnet_md_unlink(lnet_libmd_t *md);
 657 void lnet_md_deconstruct(lnet_libmd_t *lmd, lnet_md_t *umd);
 658
 659 void lnet_register_lnd(lnd_t *lnd);
 660 void lnet_unregister_lnd(lnd_t *lnd);
 661
 662 int lnet_connect(struct socket **sockp, lnet_nid_t peer_nid,
 663                  __u32 local_ip, __u32 peer_ip, int peer_port);
 664 void lnet_connect_console_error(int rc, lnet_nid_t peer_nid,
 665                                 __u32 peer_ip, int port);
 666 int lnet_count_acceptor_nis(void);
 667 int lnet_acceptor_timeout(void);
 668 int lnet_acceptor_port(void);
 669
 670 int lnet_count_acceptor_nis(void);
 671 int lnet_acceptor_port(void);
 672
 673 int lnet_acceptor_start(void);
 674 void lnet_acceptor_stop(void);
 675
 676 int lnet_ipif_query(char *name, int *up, __u32 *ip, __u32 *mask);
 677 int lnet_ipif_enumerate(char ***names);
 678 void lnet_ipif_free_enumeration(char **names, int n);
 679 int lnet_sock_setbuf(struct socket *socket, int txbufsize, int rxbufsize);
 680 int lnet_sock_getbuf(struct socket *socket, int *txbufsize, int *rxbufsize);
 681 int lnet_sock_getaddr(struct socket *socket, bool remote, __u32 *ip, int *port);
 682 int lnet_sock_write(struct socket *sock, void *buffer, int nob, int timeout);
 683 int lnet_sock_read(struct socket *sock, void *buffer, int nob, int timeout);
 684
 685 int lnet_sock_listen(struct socket **sockp, __u32 ip, int port, int backlog);
 686 int lnet_sock_accept(struct socket **newsockp, struct socket *sock);
 687 int lnet_sock_connect(struct socket **sockp, int *fatal,
 688                       __u32 local_ip, int local_port,
 689                       __u32 peer_ip, int peer_port);
 690 void libcfs_sock_release(struct socket *sock);
 691
 692 int lnet_peers_start_down(void);
 693 int lnet_peer_buffer_credits(lnet_ni_t *ni);
 694
 695 int lnet_router_checker_start(void);
 696 void lnet_router_checker_stop(void);
 697 void lnet_router_ni_update_locked(lnet_peer_t *gw, __u32 net);
 698 void lnet_swap_pinginfo(lnet_ping_info_t *info);
 699
 700 int lnet_parse_ip2nets(char **networksp, char *ip2nets);
 701 int lnet_parse_routes(char *route_str, int *im_a_router);
 702 int lnet_parse_networks(struct list_head *nilist, char *networks);
 703 int lnet_net_unique(__u32 net, struct list_head *nilist);
 704
 705 int lnet_nid2peer_locked(lnet_peer_t **lpp, lnet_nid_t nid, int cpt);
 706 lnet_peer_t *lnet_find_peer_locked(struct lnet_peer_table *ptable,
 707                                    lnet_nid_t nid);
 708 void lnet_peer_tables_cleanup(lnet_ni_t *ni);
 709 void lnet_peer_tables_destroy(void);
 710 int lnet_peer_tables_create(void);
 711 void lnet_debug_peer(lnet_nid_t nid);
 712 int lnet_get_peer_info(__u32 peer_index, __u64 *nid,
 713                        char alivness[LNET_MAX_STR_LEN],
 714                        __u32 *cpt_iter, __u32 *refcount,
 715                        __u32 *ni_peer_tx_credits, __u32 *peer_tx_credits,
 716                        __u32 *peer_rtr_credits, __u32 *peer_min_rtr_credtis,
 717                        __u32 *peer_tx_qnob);
 718
 719 static inline void
 720 lnet_peer_set_alive(lnet_peer_t *lp)
 721 {
 722         lp->lp_last_query = jiffies;
 723         lp->lp_last_alive = jiffies;
 724         if (!lp->lp_alive)
 725                 lnet_notify_locked(lp, 0, 1, lp->lp_last_alive);
 726 }
 727
 728 #endif