lnet/klnds/ralnd/ralnd_cb.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2004 Cluster File Systems, Inc.
   5  *   Author: Eric Barton <eric@bartonsoftware.com>
   6  *
   7  *   This file is part of Lustre, http://www.lustre.org.
   8  *
   9  *   Lustre is free software; you can redistribute it and/or
  10  *   modify it under the terms of version 2 of the GNU General Public
  11  *   License as published by the Free Software Foundation.
  12  *
  13  *   Lustre is distributed in the hope that it will be useful,
  14  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *   GNU General Public License for more details.
  17  *
  18  *   You should have received a copy of the GNU General Public License
  19  *   along with Lustre; if not, write to the Free Software
  20  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  */
  23
  24 #include "ranal.h"
  25
  26 int
  27 kranal_dist(lib_nal_t *nal, ptl_nid_t nid, unsigned long *dist)
  28 {
  29         /* I would guess that if kranal_get_peer (nid) == NULL,
  30            and we're not routing, then 'nid' is very distant :) */
  31         if ( nal->libnal_ni.ni_pid.nid == nid ) {
  32                 *dist = 0;
  33         } else {
  34                 *dist = 1;
  35         }
  36
  37         return 0;
  38 }
  39
  40 void
  41 kranal_device_callback(RAP_INT32 devid)
  42 {
  43         kra_device_t *dev;
  44         int           i;
  45         unsigned long flags;
  46
  47         for (i = 0; i < kranal_data.kra_ndevs; i++) {
  48
  49                 dev = &kranal_data.kra_devices[i];
  50                 if (dev->rad_id != devid)
  51                         continue;
  52
  53                 spin_lock_irqsave(&dev->rad_lock, flags);
  54
  55                 if (!dev->rad_ready) {
  56                         dev->rad_ready = 1;
  57                         wake_up(&dev->rad_waitq);
  58                 }
  59
  60                 spin_unlock_irqrestore(&dev->rad_lock, flags);
  61                 return;
  62         }
  63
  64         CWARN("callback for unknown device %d\n", devid);
  65 }
  66
  67 void
  68 kranal_schedule_conn(kra_conn_t *conn)
  69 {
  70         kra_device_t    *dev = conn->rac_device;
  71         unsigned long    flags;
  72
  73         spin_lock_irqsave(&dev->rad_lock, flags);
  74
  75         if (!conn->rac_scheduled) {
  76                 kranal_conn_addref(conn);       /* +1 ref for scheduler */
  77                 conn->rac_scheduled = 1;
  78                 list_add_tail(&conn->rac_schedlist, &dev->rad_connq);
  79                 wake_up(&dev->rad_waitq);
  80         }
  81
  82         spin_unlock_irqrestore(&dev->rad_lock, flags);
  83 }
  84
  85 kra_tx_t *
  86 kranal_get_idle_tx (int may_block)
  87 {
  88         unsigned long  flags;
  89         kra_tx_t      *tx = NULL;
  90
  91         for (;;) {
  92                 spin_lock_irqsave(&kranal_data.kra_tx_lock, flags);
  93
  94                 /* "normal" descriptor is free */
  95                 if (!list_empty(&kranal_data.kra_idle_txs)) {
  96                         tx = list_entry(kranal_data.kra_idle_txs.next,
  97                                         kra_tx_t, tx_list);
  98                         break;
  99                 }
 100
 101                 if (!may_block) {
 102                         /* may dip into reserve pool */
 103                         if (list_empty(&kranal_data.kra_idle_nblk_txs)) {
 104                                 CERROR("reserved tx desc pool exhausted\n");
 105                                 break;
 106                         }
 107
 108                         tx = list_entry(kranal_data.kra_idle_nblk_txs.next,
 109                                         kra_tx_t, tx_list);
 110                         break;
 111                 }
 112
 113                 /* block for idle tx */
 114                 spin_unlock_irqrestore(&kranal_data.kra_tx_lock, flags);
 115
 116                 wait_event(kranal_data.kra_idle_tx_waitq,
 117                            !list_empty(&kranal_data.kra_idle_txs));
 118         }
 119
 120         if (tx != NULL) {
 121                 list_del(&tx->tx_list);
 122
 123                 /* Allocate a new completion cookie.  It might not be
 124                  * needed, but we've got a lock right now... */
 125                 tx->tx_cookie = kranal_data.kra_next_tx_cookie++;
 126
 127                 LASSERT (tx->tx_buftype == RANAL_BUF_NONE);
 128                 LASSERT (tx->tx_msg.ram_type == RANAL_MSG_NONE);
 129                 LASSERT (tx->tx_conn == NULL);
 130                 LASSERT (tx->tx_libmsg[0] == NULL);
 131                 LASSERT (tx->tx_libmsg[1] == NULL);
 132         }
 133
 134         spin_unlock_irqrestore(&kranal_data.kra_tx_lock, flags);
 135
 136         return tx;
 137 }
 138
 139 void
 140 kranal_init_msg(kra_msg_t *msg, int type)
 141 {
 142         msg->ram_magic = RANAL_MSG_MAGIC;
 143         msg->ram_version = RANAL_MSG_VERSION;
 144         msg->ram_type = type;
 145         msg->ram_srcnid = kranal_lib.libnal_ni.ni_pid.nid;
 146         /* ram_connstamp gets set when FMA is sent */
 147 }
 148
 149 kra_tx_t *
 150 kranal_new_tx_msg (int may_block, int type)
 151 {
 152         kra_tx_t *tx = kranal_get_idle_tx(may_block);
 153
 154         if (tx == NULL)
 155                 return NULL;
 156
 157         kranal_init_msg(&tx->tx_msg, type);
 158         return tx;
 159 }
 160
 161 int
 162 kranal_setup_immediate_buffer (kra_tx_t *tx, int niov, struct iovec *iov,
 163                                int offset, int nob)
 164
 165 {
 166         /* For now this is almost identical to kranal_setup_virt_buffer, but we
 167          * could "flatten" the payload into a single contiguous buffer ready
 168          * for sending direct over an FMA if we ever needed to. */
 169
 170         LASSERT (nob > 0);
 171         LASSERT (niov > 0);
 172         LASSERT (tx->tx_buftype == RANAL_BUF_NONE);
 173
 174         while (offset >= iov->iov_len) {
 175                 offset -= iov->iov_len;
 176                 niov--;
 177                 iov++;
 178                 LASSERT (niov > 0);
 179         }
 180
 181         if (nob > iov->iov_len - offset) {
 182                 CERROR("Can't handle multiple vaddr fragments\n");
 183                 return -EMSGSIZE;
 184         }
 185
 186         tx->tx_buftype = RANAL_BUF_IMMEDIATE;
 187         tx->tx_nob = nob;
 188         tx->tx_buffer = (void *)(((unsigned long)iov->iov_base) + offset);
 189         return 0;
 190 }
 191
 192 int
 193 kranal_setup_virt_buffer (kra_tx_t *tx, int niov, struct iovec *iov,
 194                           int offset, int nob)
 195
 196 {
 197         LASSERT (nob > 0);
 198         LASSERT (niov > 0);
 199         LASSERT (tx->tx_buftype == RANAL_BUF_NONE);
 200
 201         while (offset >= iov->iov_len) {
 202                 offset -= iov->iov_len;
 203                 niov--;
 204                 iov++;
 205                 LASSERT (niov > 0);
 206         }
 207
 208         if (nob > iov->iov_len - offset) {
 209                 CERROR("Can't handle multiple vaddr fragments\n");
 210                 return -EMSGSIZE;
 211         }
 212
 213         tx->tx_buftype = RANAL_BUF_VIRT_UNMAPPED;
 214         tx->tx_nob = nob;
 215         tx->tx_buffer = (void *)(((unsigned long)iov->iov_base) + offset);
 216         return 0;
 217 }
 218
 219 int
 220 kranal_setup_phys_buffer (kra_tx_t *tx, int nkiov, ptl_kiov_t *kiov,
 221                           int offset, int nob)
 222 {
 223         RAP_PHYS_REGION *phys = tx->tx_phys;
 224         int              resid;
 225
 226         CDEBUG(D_NET, "niov %d offset %d nob %d\n", nkiov, offset, nob);
 227
 228         LASSERT (nob > 0);
 229         LASSERT (nkiov > 0);
 230         LASSERT (tx->tx_buftype == RANAL_BUF_NONE);
 231
 232         while (offset >= kiov->kiov_len) {
 233                 offset -= kiov->kiov_len;
 234                 nkiov--;
 235                 kiov++;
 236                 LASSERT (nkiov > 0);
 237         }
 238
 239         tx->tx_buftype = RANAL_BUF_PHYS_UNMAPPED;
 240         tx->tx_nob = nob;
 241         tx->tx_buffer = (void *)((unsigned long)(kiov->kiov_offset + offset));
 242
 243         phys->Address = kranal_page2phys(kiov->kiov_page);
 244         phys++;
 245
 246         resid = nob - (kiov->kiov_len - offset);
 247         while (resid > 0) {
 248                 kiov++;
 249                 nkiov--;
 250                 LASSERT (nkiov > 0);
 251
 252                 if (kiov->kiov_offset != 0 ||
 253                     ((resid > PAGE_SIZE) &&
 254                      kiov->kiov_len < PAGE_SIZE)) {
 255                         /* Can't have gaps */
 256                         CERROR("Can't make payload contiguous in I/O VM:"
 257                                "page %d, offset %d, len %d \n",
 258                                phys - tx->tx_phys,
 259                                kiov->kiov_offset, kiov->kiov_len);
 260                         return -EINVAL;
 261                 }
 262
 263                 if ((phys - tx->tx_phys) == PTL_MD_MAX_IOV) {
 264                         CERROR ("payload too big (%d)\n", phys - tx->tx_phys);
 265                         return -EMSGSIZE;
 266                 }
 267
 268                 phys->Address = kranal_page2phys(kiov->kiov_page);
 269                 phys++;
 270
 271                 resid -= PAGE_SIZE;
 272         }
 273
 274         tx->tx_phys_npages = phys - tx->tx_phys;
 275         return 0;
 276 }
 277
 278 static inline int
 279 kranal_setup_rdma_buffer (kra_tx_t *tx, int niov,
 280                           struct iovec *iov, ptl_kiov_t *kiov,
 281                           int offset, int nob)
 282 {
 283         LASSERT ((iov == NULL) != (kiov == NULL));
 284
 285         if (kiov != NULL)
 286                 return kranal_setup_phys_buffer(tx, niov, kiov, offset, nob);
 287
 288         return kranal_setup_virt_buffer(tx, niov, iov, offset, nob);
 289 }
 290
 291 void
 292 kranal_map_buffer (kra_tx_t *tx)
 293 {
 294         kra_conn_t     *conn = tx->tx_conn;
 295         kra_device_t   *dev = conn->rac_device;
 296         RAP_RETURN      rrc;
 297
 298         LASSERT (current == dev->rad_scheduler);
 299
 300         switch (tx->tx_buftype) {
 301         default:
 302                 LBUG();
 303
 304         case RANAL_BUF_NONE:
 305         case RANAL_BUF_IMMEDIATE:
 306         case RANAL_BUF_PHYS_MAPPED:
 307         case RANAL_BUF_VIRT_MAPPED:
 308                 break;
 309
 310         case RANAL_BUF_PHYS_UNMAPPED:
 311                 rrc = RapkRegisterPhys(dev->rad_handle,
 312                                        tx->tx_phys, tx->tx_phys_npages,
 313                                        &tx->tx_map_key);
 314                 LASSERT (rrc == RAP_SUCCESS);
 315                 tx->tx_buftype = RANAL_BUF_PHYS_MAPPED;
 316                 break;
 317
 318         case RANAL_BUF_VIRT_UNMAPPED:
 319                 rrc = RapkRegisterMemory(dev->rad_handle,
 320                                          tx->tx_buffer, tx->tx_nob,
 321                                          &tx->tx_map_key);
 322                 LASSERT (rrc == RAP_SUCCESS);
 323                 tx->tx_buftype = RANAL_BUF_VIRT_MAPPED;
 324                 break;
 325         }
 326 }
 327
 328 void
 329 kranal_unmap_buffer (kra_tx_t *tx)
 330 {
 331         kra_device_t   *dev;
 332         RAP_RETURN      rrc;
 333
 334         switch (tx->tx_buftype) {
 335         default:
 336                 LBUG();
 337
 338         case RANAL_BUF_NONE:
 339         case RANAL_BUF_IMMEDIATE:
 340         case RANAL_BUF_PHYS_UNMAPPED:
 341         case RANAL_BUF_VIRT_UNMAPPED:
 342                 break;
 343
 344         case RANAL_BUF_PHYS_MAPPED:
 345                 LASSERT (tx->tx_conn != NULL);
 346                 dev = tx->tx_conn->rac_device;
 347                 LASSERT (current == dev->rad_scheduler);
 348                 rrc = RapkDeregisterMemory(dev->rad_handle, NULL,
 349                                            &tx->tx_map_key);
 350                 LASSERT (rrc == RAP_SUCCESS);
 351                 tx->tx_buftype = RANAL_BUF_PHYS_UNMAPPED;
 352                 break;
 353
 354         case RANAL_BUF_VIRT_MAPPED:
 355                 LASSERT (tx->tx_conn != NULL);
 356                 dev = tx->tx_conn->rac_device;
 357                 LASSERT (current == dev->rad_scheduler);
 358                 rrc = RapkDeregisterMemory(dev->rad_handle, tx->tx_buffer,
 359                                            &tx->tx_map_key);
 360                 LASSERT (rrc == RAP_SUCCESS);
 361                 tx->tx_buftype = RANAL_BUF_VIRT_UNMAPPED;
 362                 break;
 363         }
 364 }
 365
 366 void
 367 kranal_tx_done (kra_tx_t *tx, int completion)
 368 {
 369         ptl_err_t        ptlrc = (completion == 0) ? PTL_OK : PTL_FAIL;
 370         unsigned long    flags;
 371         int              i;
 372
 373         LASSERT (!in_interrupt());
 374
 375         kranal_unmap_buffer(tx);
 376
 377         for (i = 0; i < 2; i++) {
 378                 /* tx may have up to 2 libmsgs to finalise */
 379                 if (tx->tx_libmsg[i] == NULL)
 380                         continue;
 381
 382                 lib_finalize(&kranal_lib, NULL, tx->tx_libmsg[i], ptlrc);
 383                 tx->tx_libmsg[i] = NULL;
 384         }
 385
 386         tx->tx_buftype = RANAL_BUF_NONE;
 387         tx->tx_msg.ram_type = RANAL_MSG_NONE;
 388         tx->tx_conn = NULL;
 389
 390         spin_lock_irqsave(&kranal_data.kra_tx_lock, flags);
 391
 392         if (tx->tx_isnblk) {
 393                 list_add_tail(&tx->tx_list, &kranal_data.kra_idle_nblk_txs);
 394         } else {
 395                 list_add_tail(&tx->tx_list, &kranal_data.kra_idle_txs);
 396                 wake_up(&kranal_data.kra_idle_tx_waitq);
 397         }
 398
 399         spin_unlock_irqrestore(&kranal_data.kra_tx_lock, flags);
 400 }
 401
 402 kra_conn_t *
 403 kranal_find_conn_locked (kra_peer_t *peer)
 404 {
 405         struct list_head *tmp;
 406
 407         /* just return the first connection */
 408         list_for_each (tmp, &peer->rap_conns) {
 409                 return list_entry(tmp, kra_conn_t, rac_list);
 410         }
 411
 412         return NULL;
 413 }
 414
 415 void
 416 kranal_post_fma (kra_conn_t *conn, kra_tx_t *tx)
 417 {
 418         unsigned long    flags;
 419
 420         tx->tx_conn = conn;
 421
 422         spin_lock_irqsave(&conn->rac_lock, flags);
 423         list_add_tail(&tx->tx_list, &conn->rac_fmaq);
 424         tx->tx_qtime = jiffies;
 425         spin_unlock_irqrestore(&conn->rac_lock, flags);
 426
 427         kranal_schedule_conn(conn);
 428 }
 429
 430 void
 431 kranal_launch_tx (kra_tx_t *tx, ptl_nid_t nid)
 432 {
 433         unsigned long    flags;
 434         kra_peer_t      *peer;
 435         kra_conn_t      *conn;
 436         unsigned long    now;
 437         rwlock_t        *g_lock = &kranal_data.kra_global_lock;
 438
 439         /* If I get here, I've committed to send, so I complete the tx with
 440          * failure on any problems */
 441
 442         LASSERT (tx->tx_conn == NULL);          /* only set when assigned a conn */
 443
 444         read_lock(g_lock);
 445
 446         peer = kranal_find_peer_locked(nid);
 447         if (peer == NULL) {
 448                 read_unlock(g_lock);
 449                 kranal_tx_done(tx, -EHOSTUNREACH);
 450                 return;
 451         }
 452
 453         conn = kranal_find_conn_locked(peer);
 454         if (conn != NULL) {
 455                 kranal_post_fma(conn, tx);
 456                 read_unlock(g_lock);
 457                 return;
 458         }
 459
 460         /* Making one or more connections; I'll need a write lock... */
 461         read_unlock(g_lock);
 462         write_lock_irqsave(g_lock, flags);
 463
 464         peer = kranal_find_peer_locked(nid);
 465         if (peer == NULL) {
 466                 write_unlock_irqrestore(g_lock, flags);
 467                 kranal_tx_done(tx, -EHOSTUNREACH);
 468                 return;
 469         }
 470
 471         conn = kranal_find_conn_locked(peer);
 472         if (conn != NULL) {
 473                 /* Connection exists; queue message on it */
 474                 kranal_post_fma(conn, tx);
 475                 write_unlock_irqrestore(g_lock, flags);
 476                 return;
 477         }
 478
 479         LASSERT (peer->rap_persistence > 0);
 480
 481         if (!peer->rap_connecting) {
 482                 LASSERT (list_empty(&peer->rap_tx_queue));
 483
 484                 now = CURRENT_TIME;
 485                 if (now < peer->rap_reconnect_time) {
 486                         write_unlock_irqrestore(g_lock, flags);
 487                         kranal_tx_done(tx, -EHOSTUNREACH);
 488                         return;
 489                 }
 490
 491                 peer->rap_connecting = 1;
 492                 kranal_peer_addref(peer); /* extra ref for connd */
 493
 494                 spin_lock(&kranal_data.kra_connd_lock);
 495
 496                 list_add_tail(&peer->rap_connd_list,
 497                               &kranal_data.kra_connd_peers);
 498                 wake_up(&kranal_data.kra_connd_waitq);
 499
 500                 spin_unlock(&kranal_data.kra_connd_lock);
 501         }
 502
 503         /* A connection is being established; queue the message... */
 504         list_add_tail(&tx->tx_list, &peer->rap_tx_queue);
 505
 506         write_unlock_irqrestore(g_lock, flags);
 507 }
 508
 509 void
 510 kranal_rdma(kra_tx_t *tx, int type,
 511             kra_rdma_desc_t *sink, int nob, __u64 cookie)
 512 {
 513         kra_conn_t   *conn = tx->tx_conn;
 514         RAP_RETURN    rrc;
 515         unsigned long flags;
 516
 517         LASSERT (kranal_tx_mapped(tx));
 518         LASSERT (nob <= sink->rard_nob);
 519         LASSERT (nob <= tx->tx_nob);
 520
 521         /* No actual race with scheduler sending CLOSE (I'm she!) */
 522         LASSERT (current == conn->rac_device->rad_scheduler);
 523
 524         memset(&tx->tx_rdma_desc, 0, sizeof(tx->tx_rdma_desc));
 525         tx->tx_rdma_desc.SrcPtr.AddressBits = (__u64)((unsigned long)tx->tx_buffer);
 526         tx->tx_rdma_desc.SrcKey = tx->tx_map_key;
 527         tx->tx_rdma_desc.DstPtr = sink->rard_addr;
 528         tx->tx_rdma_desc.DstKey = sink->rard_key;
 529         tx->tx_rdma_desc.Length = nob;
 530         tx->tx_rdma_desc.AppPtr = tx;
 531
 532         /* prep final completion message */
 533         kranal_init_msg(&tx->tx_msg, type);
 534         tx->tx_msg.ram_u.completion.racm_cookie = cookie;
 535
 536         if (nob == 0) { /* Immediate completion */
 537                 kranal_post_fma(conn, tx);
 538                 return;
 539         }
 540
 541         LASSERT (!conn->rac_close_sent); /* Don't lie (CLOSE == RDMA idle) */
 542
 543         rrc = RapkPostRdma(conn->rac_rihandle, &tx->tx_rdma_desc);
 544         LASSERT (rrc == RAP_SUCCESS);
 545
 546         spin_lock_irqsave(&conn->rac_lock, flags);
 547         list_add_tail(&tx->tx_list, &conn->rac_rdmaq);
 548         tx->tx_qtime = jiffies;
 549         spin_unlock_irqrestore(&conn->rac_lock, flags);
 550 }
 551
 552 int
 553 kranal_consume_rxmsg (kra_conn_t *conn, void *buffer, int nob)
 554 {
 555         __u32      nob_received = nob;
 556         RAP_RETURN rrc;
 557
 558         LASSERT (conn->rac_rxmsg != NULL);
 559
 560         rrc = RapkFmaCopyOut(conn->rac_rihandle, buffer,
 561                              &nob_received, sizeof(kra_msg_t));
 562         LASSERT (rrc == RAP_SUCCESS);
 563
 564         conn->rac_rxmsg = NULL;
 565
 566         if (nob_received != nob) {
 567                 CWARN("Expected %d immediate bytes but got %d\n",
 568                       nob, nob_received);
 569                 return -EPROTO;
 570         }
 571
 572         return 0;
 573 }
 574
 575 ptl_err_t
 576 kranal_do_send (lib_nal_t    *nal,
 577                 void         *private,
 578                 lib_msg_t    *libmsg,
 579                 ptl_hdr_t    *hdr,
 580                 int           type,
 581                 ptl_nid_t     nid,
 582                 ptl_pid_t     pid,
 583                 unsigned int  niov,
 584                 struct iovec *iov,
 585                 ptl_kiov_t   *kiov,
 586                 size_t        offset,
 587                 size_t        nob)
 588 {
 589         kra_conn_t *conn;
 590         kra_tx_t   *tx;
 591         int         rc;
 592
 593         /* NB 'private' is different depending on what we're sending.... */
 594
 595         CDEBUG(D_NET, "sending "LPSZ" bytes in %d frags to nid:"LPX64
 596                " pid %d\n", nob, niov, nid , pid);
 597
 598         LASSERT (nob == 0 || niov > 0);
 599         LASSERT (niov <= PTL_MD_MAX_IOV);
 600
 601         LASSERT (!in_interrupt());
 602         /* payload is either all vaddrs or all pages */
 603         LASSERT (!(kiov != NULL && iov != NULL));
 604
 605         switch(type) {
 606         default:
 607                 LBUG();
 608
 609         case PTL_MSG_REPLY: {
 610                 /* reply's 'private' is the conn that received the GET_REQ */
 611                 conn = private;
 612                 LASSERT (conn->rac_rxmsg != NULL);
 613
 614                 if (conn->rac_rxmsg->ram_type == RANAL_MSG_IMMEDIATE) {
 615                         if (nob > RANAL_FMA_MAX_DATA) {
 616                                 CERROR("Can't REPLY IMMEDIATE %d to "LPX64"\n",
 617                                        nob, nid);
 618                                 return PTL_FAIL;
 619                         }
 620                         break;                  /* RDMA not expected */
 621                 }
 622
 623                 /* Incoming message consistent with immediate reply? */
 624                 if (conn->rac_rxmsg->ram_type != RANAL_MSG_GET_REQ) {
 625                         CERROR("REPLY to "LPX64" bad msg type %x!!!\n",
 626                                nid, conn->rac_rxmsg->ram_type);
 627                         return PTL_FAIL;
 628                 }
 629
 630                 tx = kranal_get_idle_tx(0);
 631                 if (tx == NULL)
 632                         return PTL_FAIL;
 633
 634                 rc = kranal_setup_rdma_buffer(tx, niov, iov, kiov, offset, nob);
 635                 if (rc != 0) {
 636                         kranal_tx_done(tx, rc);
 637                         return PTL_FAIL;
 638                 }
 639
 640                 tx->tx_conn = conn;
 641                 tx->tx_libmsg[0] = libmsg;
 642
 643                 kranal_map_buffer(tx);
 644                 kranal_rdma(tx, RANAL_MSG_GET_DONE,
 645                             &conn->rac_rxmsg->ram_u.get.ragm_desc, nob,
 646                             conn->rac_rxmsg->ram_u.get.ragm_cookie);
 647                 return PTL_OK;
 648         }
 649
 650         case PTL_MSG_GET:
 651                 LASSERT (niov == 0);
 652                 LASSERT (nob == 0);
 653                 /* We have to consider the eventual sink buffer rather than any
 654                  * payload passed here (there isn't any, and strictly, looking
 655                  * inside libmsg is a layering violation).  We send a simple
 656                  * IMMEDIATE GET if the sink buffer is mapped already and small
 657                  * enough for FMA */
 658
 659                 if ((libmsg->md->options & PTL_MD_KIOV) == 0 &&
 660                     libmsg->md->length <= RANAL_FMA_MAX_DATA &&
 661                     libmsg->md->length <= kranal_tunables.kra_max_immediate)
 662                         break;
 663
 664                 tx = kranal_new_tx_msg(!in_interrupt(), RANAL_MSG_GET_REQ);
 665                 if (tx == NULL)
 666                         return PTL_NO_SPACE;
 667
 668                 if ((libmsg->md->options & PTL_MD_KIOV) == 0)
 669                         rc = kranal_setup_virt_buffer(tx, libmsg->md->md_niov,
 670                                                       libmsg->md->md_iov.iov,
 671                                                       0, libmsg->md->length);
 672                 else
 673                         rc = kranal_setup_phys_buffer(tx, libmsg->md->md_niov,
 674                                                       libmsg->md->md_iov.kiov,
 675                                                       0, libmsg->md->length);
 676                 if (rc != 0) {
 677                         kranal_tx_done(tx, rc);
 678                         return PTL_FAIL;
 679                 }
 680
 681                 tx->tx_libmsg[1] = lib_create_reply_msg(&kranal_lib, nid, libmsg);
 682                 if (tx->tx_libmsg[1] == NULL) {
 683                         CERROR("Can't create reply for GET to "LPX64"\n", nid);
 684                         kranal_tx_done(tx, rc);
 685                         return PTL_FAIL;
 686                 }
 687
 688                 tx->tx_libmsg[0] = libmsg;
 689                 tx->tx_msg.ram_u.get.ragm_hdr = *hdr;
 690                 /* rest of tx_msg is setup just before it is sent */
 691                 kranal_launch_tx(tx, nid);
 692                 return PTL_OK;
 693
 694         case PTL_MSG_ACK:
 695                 LASSERT (nob == 0);
 696                 break;
 697
 698         case PTL_MSG_PUT:
 699                 if (kiov == NULL &&             /* not paged */
 700                     nob <= RANAL_MAX_IMMEDIATE && /* small enough */
 701                     nob <= kranal_tunables.kra_max_immediate)
 702                         break;                  /* send IMMEDIATE */
 703
 704                 tx = kranal_new_tx_msg(!in_interrupt(), RANAL_MSG_PUT_REQ);
 705                 if (tx == NULL)
 706                         return PTL_NO_SPACE;
 707
 708                 rc = kranal_setup_rdma_buffer(tx, niov, iov, kiov, offset, nob);
 709                 if (rc != 0) {
 710                         kranal_tx_done(tx, rc);
 711                         return PTL_FAIL;
 712                 }
 713
 714                 tx->tx_libmsg[0] = libmsg;
 715                 tx->tx_msg.ram_u.putreq.raprm_hdr = *hdr;
 716                 /* rest of tx_msg is setup just before it is sent */
 717                 kranal_launch_tx(tx, nid);
 718                 return PTL_OK;
 719         }
 720
 721         LASSERT (kiov == NULL);
 722         LASSERT (nob <= RANAL_MAX_IMMEDIATE);
 723
 724         tx = kranal_new_tx_msg(!(type == PTL_MSG_ACK ||
 725                                  type == PTL_MSG_REPLY ||
 726                                  in_interrupt()),
 727                                RANAL_MSG_IMMEDIATE);
 728         if (tx == NULL)
 729                 return PTL_NO_SPACE;
 730
 731         rc = kranal_setup_immediate_buffer(tx, niov, iov, offset, nob);
 732         if (rc != 0) {
 733                 kranal_tx_done(tx, rc);
 734                 return PTL_FAIL;
 735         }
 736
 737         tx->tx_msg.ram_u.immediate.raim_hdr = *hdr;
 738         tx->tx_libmsg[0] = libmsg;
 739         kranal_launch_tx(tx, nid);
 740         return PTL_OK;
 741 }
 742
 743 ptl_err_t
 744 kranal_send (lib_nal_t *nal, void *private, lib_msg_t *cookie,
 745              ptl_hdr_t *hdr, int type, ptl_nid_t nid, ptl_pid_t pid,
 746              unsigned int niov, struct iovec *iov,
 747              size_t offset, size_t len)
 748 {
 749         return kranal_do_send(nal, private, cookie,
 750                               hdr, type, nid, pid,
 751                               niov, iov, NULL,
 752                               offset, len);
 753 }
 754
 755 ptl_err_t
 756 kranal_send_pages (lib_nal_t *nal, void *private, lib_msg_t *cookie,
 757                    ptl_hdr_t *hdr, int type, ptl_nid_t nid, ptl_pid_t pid,
 758                    unsigned int niov, ptl_kiov_t *kiov,
 759                    size_t offset, size_t len)
 760 {
 761         return kranal_do_send(nal, private, cookie,
 762                               hdr, type, nid, pid,
 763                               niov, NULL, kiov,
 764                               offset, len);
 765 }
 766
 767 ptl_err_t
 768 kranal_recvmsg (lib_nal_t *nal, void *private, lib_msg_t *libmsg,
 769                 unsigned int niov, struct iovec *iov, ptl_kiov_t *kiov,
 770                 size_t offset, size_t mlen, size_t rlen)
 771 {
 772         kra_conn_t  *conn = private;
 773         kra_msg_t   *rxmsg = conn->rac_rxmsg;
 774         kra_tx_t    *tx;
 775         void        *buffer;
 776         int          rc;
 777
 778         LASSERT (mlen <= rlen);
 779         LASSERT (!in_interrupt());
 780         /* Either all pages or all vaddrs */
 781         LASSERT (!(kiov != NULL && iov != NULL));
 782
 783         switch(rxmsg->ram_type) {
 784         default:
 785                 LBUG();
 786                 return PTL_FAIL;
 787
 788         case RANAL_MSG_IMMEDIATE:
 789                 if (mlen == 0) {
 790                         buffer = NULL;
 791                 } else if (kiov != NULL) {
 792                         CERROR("Can't recv immediate into paged buffer\n");
 793                         return PTL_FAIL;
 794                 } else {
 795                         LASSERT (niov > 0);
 796                         while (offset >= iov->iov_len) {
 797                                 offset -= iov->iov_len;
 798                                 iov++;
 799                                 niov--;
 800                                 LASSERT (niov > 0);
 801                         }
 802                         if (mlen > iov->iov_len - offset) {
 803                                 CERROR("Can't handle immediate frags\n");
 804                                 return PTL_FAIL;
 805                         }
 806                         buffer = ((char *)iov->iov_base) + offset;
 807                 }
 808                 rc = kranal_consume_rxmsg(conn, buffer, mlen);
 809                 lib_finalize(nal, NULL, libmsg, (rc == 0) ? PTL_OK : PTL_FAIL);
 810                 return PTL_OK;
 811
 812         case RANAL_MSG_GET_REQ:
 813                 /* If the GET matched, we've already handled it in
 814                  * kranal_do_send which is called to send the REPLY.  We're
 815                  * only called here to complete the GET receive (if we needed
 816                  * it which we don't, but I digress...) */
 817                 LASSERT (libmsg == NULL);
 818                 lib_finalize(nal, NULL, libmsg, PTL_OK);
 819                 return PTL_OK;
 820
 821         case RANAL_MSG_PUT_REQ:
 822                 if (libmsg == NULL) {           /* PUT didn't match... */
 823                         lib_finalize(nal, NULL, libmsg, PTL_OK);
 824                         return PTL_OK;
 825                 }
 826
 827                 tx = kranal_new_tx_msg(0, RANAL_MSG_PUT_ACK);
 828                 if (tx == NULL)
 829                         return PTL_NO_SPACE;
 830
 831                 rc = kranal_setup_rdma_buffer(tx, niov, iov, kiov, offset, mlen);
 832                 if (rc != 0) {
 833                         kranal_tx_done(tx, rc);
 834                         return PTL_FAIL;
 835                 }
 836
 837                 tx->tx_conn = conn;
 838                 kranal_map_buffer(tx);
 839
 840                 tx->tx_msg.ram_u.putack.rapam_src_cookie =
 841                         conn->rac_rxmsg->ram_u.putreq.raprm_cookie;
 842                 tx->tx_msg.ram_u.putack.rapam_dst_cookie = tx->tx_cookie;
 843                 tx->tx_msg.ram_u.putack.rapam_desc.rard_key = tx->tx_map_key;
 844                 tx->tx_msg.ram_u.putack.rapam_desc.rard_addr.AddressBits =
 845                         (__u64)((unsigned long)tx->tx_buffer);
 846                 tx->tx_msg.ram_u.putack.rapam_desc.rard_nob = mlen;
 847
 848                 tx->tx_libmsg[0] = libmsg; /* finalize this on RDMA_DONE */
 849
 850                 kranal_post_fma(conn, tx);
 851
 852                 /* flag matched by consuming rx message */
 853                 kranal_consume_rxmsg(conn, NULL, 0);
 854                 return PTL_OK;
 855         }
 856 }
 857
 858 ptl_err_t
 859 kranal_recv (lib_nal_t *nal, void *private, lib_msg_t *msg,
 860              unsigned int niov, struct iovec *iov,
 861              size_t offset, size_t mlen, size_t rlen)
 862 {
 863         return kranal_recvmsg(nal, private, msg, niov, iov, NULL,
 864                               offset, mlen, rlen);
 865 }
 866
 867 ptl_err_t
 868 kranal_recv_pages (lib_nal_t *nal, void *private, lib_msg_t *msg,
 869                    unsigned int niov, ptl_kiov_t *kiov,
 870                    size_t offset, size_t mlen, size_t rlen)
 871 {
 872         return kranal_recvmsg(nal, private, msg, niov, NULL, kiov,
 873                               offset, mlen, rlen);
 874 }
 875
 876 int
 877 kranal_thread_start (int(*fn)(void *arg), void *arg)
 878 {
 879         long    pid = kernel_thread(fn, arg, 0);
 880
 881         if (pid < 0)
 882                 return(int)pid;
 883
 884         atomic_inc(&kranal_data.kra_nthreads);
 885         return 0;
 886 }
 887
 888 void
 889 kranal_thread_fini (void)
 890 {
 891         atomic_dec(&kranal_data.kra_nthreads);
 892 }
 893
 894 int
 895 kranal_check_conn_timeouts (kra_conn_t *conn)
 896 {
 897         kra_tx_t          *tx;
 898         struct list_head  *ttmp;
 899         unsigned long      flags;
 900         long               timeout;
 901         unsigned long      now = jiffies;
 902
 903         LASSERT (conn->rac_state == RANAL_CONN_ESTABLISHED ||
 904                  conn->rac_state == RANAL_CONN_CLOSING);
 905
 906         if (!conn->rac_close_sent &&
 907             time_after_eq(now, conn->rac_last_tx + conn->rac_keepalive * HZ)) {
 908                 /* not sent in a while; schedule conn so scheduler sends a keepalive */
 909                 kranal_schedule_conn(conn);
 910         }
 911
 912         timeout = conn->rac_timeout * HZ;
 913
 914         if (!conn->rac_close_recvd &&
 915             time_after_eq(now, conn->rac_last_rx + timeout)) {
 916                 CERROR("Nothing received from "LPX64" within %lu seconds\n",
 917                        conn->rac_peer->rap_nid, (now - conn->rac_last_rx)/HZ);
 918                 return -ETIMEDOUT;
 919         }
 920
 921         if (conn->rac_state != RANAL_CONN_ESTABLISHED)
 922                 return 0;
 923
 924         /* Check the conn's queues are moving.  These are "belt+braces" checks,
 925          * in case of hardware/software errors that make this conn seem
 926          * responsive even though it isn't progressing its message queues. */
 927
 928         spin_lock_irqsave(&conn->rac_lock, flags);
 929
 930         list_for_each (ttmp, &conn->rac_fmaq) {
 931                 tx = list_entry(ttmp, kra_tx_t, tx_list);
 932
 933                 if (time_after_eq(now, tx->tx_qtime + timeout)) {
 934                         spin_unlock_irqrestore(&conn->rac_lock, flags);
 935                         CERROR("tx on fmaq for "LPX64" blocked %lu seconds\n",
 936                                conn->rac_peer->rap_nid, (now - tx->tx_qtime)/HZ);
 937                         return -ETIMEDOUT;
 938                 }
 939         }
 940
 941         list_for_each (ttmp, &conn->rac_rdmaq) {
 942                 tx = list_entry(ttmp, kra_tx_t, tx_list);
 943
 944                 if (time_after_eq(now, tx->tx_qtime + timeout)) {
 945                         spin_unlock_irqrestore(&conn->rac_lock, flags);
 946                         CERROR("tx on rdmaq for "LPX64" blocked %lu seconds\n",
 947                                conn->rac_peer->rap_nid, (now - tx->tx_qtime)/HZ);
 948                         return -ETIMEDOUT;
 949                 }
 950         }
 951
 952         list_for_each (ttmp, &conn->rac_replyq) {
 953                 tx = list_entry(ttmp, kra_tx_t, tx_list);
 954
 955                 if (time_after_eq(now, tx->tx_qtime + timeout)) {
 956                         spin_unlock_irqrestore(&conn->rac_lock, flags);
 957                         CERROR("tx on replyq for "LPX64" blocked %lu seconds\n",
 958                                conn->rac_peer->rap_nid, (now - tx->tx_qtime)/HZ);
 959                         return -ETIMEDOUT;
 960                 }
 961         }
 962
 963         spin_unlock_irqrestore(&conn->rac_lock, flags);
 964         return 0;
 965 }
 966
 967 void
 968 kranal_reaper_check (int idx, unsigned long *min_timeoutp)
 969 {
 970         struct list_head  *conns = &kranal_data.kra_conns[idx];
 971         struct list_head  *ctmp;
 972         kra_conn_t        *conn;
 973         unsigned long      flags;
 974         int                rc;
 975
 976  again:
 977         /* NB. We expect to check all the conns and not find any problems, so
 978          * we just use a shared lock while we take a look... */
 979         read_lock(&kranal_data.kra_global_lock);
 980
 981         list_for_each (ctmp, conns) {
 982                 conn = list_entry(ctmp, kra_conn_t, rac_hashlist);
 983
 984                 if (conn->rac_timeout < *min_timeoutp )
 985                         *min_timeoutp = conn->rac_timeout;
 986                 if (conn->rac_keepalive < *min_timeoutp )
 987                         *min_timeoutp = conn->rac_keepalive;
 988
 989                 rc = kranal_check_conn_timeouts(conn);
 990                 if (rc == 0)
 991                         continue;
 992
 993                 kranal_conn_addref(conn);
 994                 read_unlock(&kranal_data.kra_global_lock);
 995
 996                 CERROR("Conn to "LPX64", cqid %d timed out\n",
 997                        conn->rac_peer->rap_nid, conn->rac_cqid);
 998
 999                 write_lock_irqsave(&kranal_data.kra_global_lock, flags);
1000
1001                 switch (conn->rac_state) {
1002                 default:
1003                         LBUG();
1004
1005                 case RANAL_CONN_ESTABLISHED:
1006                         kranal_close_conn_locked(conn, -ETIMEDOUT);
1007                         break;
1008
1009                 case RANAL_CONN_CLOSING:
1010                         kranal_terminate_conn_locked(conn);
1011                         break;
1012                 }
1013
1014                 write_unlock_irqrestore(&kranal_data.kra_global_lock, flags);
1015
1016                 kranal_conn_decref(conn);
1017
1018                 /* start again now I've dropped the lock */
1019                 goto again;
1020         }
1021
1022         read_unlock(&kranal_data.kra_global_lock);
1023 }
1024
1025 int
1026 kranal_connd (void *arg)
1027 {
1028         char               name[16];
1029         wait_queue_t       wait;
1030         unsigned long      flags;
1031         kra_peer_t        *peer;
1032         kra_acceptsock_t  *ras;
1033         int                did_something;
1034
1035         snprintf(name, sizeof(name), "kranal_connd_%02ld", (long)arg);
1036         kportal_daemonize(name);
1037         kportal_blockallsigs();
1038
1039         init_waitqueue_entry(&wait, current);
1040
1041         spin_lock_irqsave(&kranal_data.kra_connd_lock, flags);
1042
1043         while (!kranal_data.kra_shutdown) {
1044                 did_something = 0;
1045
1046                 if (!list_empty(&kranal_data.kra_connd_acceptq)) {
1047                         ras = list_entry(kranal_data.kra_connd_acceptq.next,
1048                                          kra_acceptsock_t, ras_list);
1049                         list_del(&ras->ras_list);
1050                         spin_unlock_irqrestore(&kranal_data.kra_connd_lock, flags);
1051
1052                         kranal_conn_handshake(ras->ras_sock, NULL);
1053                         kranal_free_acceptsock(ras);
1054
1055                         spin_lock_irqsave(&kranal_data.kra_connd_lock, flags);
1056                         did_something = 1;
1057                 }
1058
1059                 if (!list_empty(&kranal_data.kra_connd_peers)) {
1060                         peer = list_entry(kranal_data.kra_connd_peers.next,
1061                                           kra_peer_t, rap_connd_list);
1062
1063                         list_del_init(&peer->rap_connd_list);
1064                         spin_unlock_irqrestore(&kranal_data.kra_connd_lock, flags);
1065
1066                         kranal_connect(peer);
1067                         kranal_peer_decref(peer);
1068
1069                         spin_lock_irqsave(&kranal_data.kra_connd_lock, flags);
1070                         did_something = 1;
1071                 }
1072
1073                 if (did_something)
1074                         continue;
1075
1076                 set_current_state(TASK_INTERRUPTIBLE);
1077                 add_wait_queue(&kranal_data.kra_connd_waitq, &wait);
1078
1079                 spin_unlock_irqrestore(&kranal_data.kra_connd_lock, flags);
1080
1081                 schedule ();
1082
1083                 set_current_state(TASK_RUNNING);
1084                 remove_wait_queue(&kranal_data.kra_connd_waitq, &wait);
1085
1086                 spin_lock_irqsave(&kranal_data.kra_connd_lock, flags);
1087         }
1088
1089         spin_unlock_irqrestore(&kranal_data.kra_connd_lock, flags);
1090
1091         kranal_thread_fini();
1092         return 0;
1093 }
1094
1095 void
1096 kranal_update_reaper_timeout(long timeout)
1097 {
1098         unsigned long   flags;
1099
1100         LASSERT (timeout > 0);
1101
1102         spin_lock_irqsave(&kranal_data.kra_reaper_lock, flags);
1103
1104         if (timeout < kranal_data.kra_new_min_timeout)
1105                 kranal_data.kra_new_min_timeout = timeout;
1106
1107         spin_unlock_irqrestore(&kranal_data.kra_reaper_lock, flags);
1108 }
1109
1110 int
1111 kranal_reaper (void *arg)
1112 {
1113         wait_queue_t       wait;
1114         unsigned long      flags;
1115         long               timeout;
1116         int                i;
1117         int                conn_entries = kranal_data.kra_conn_hash_size;
1118         int                conn_index = 0;
1119         int                base_index = conn_entries - 1;
1120         unsigned long      next_check_time = jiffies;
1121         long               next_min_timeout = MAX_SCHEDULE_TIMEOUT;
1122         long               current_min_timeout = 1;
1123
1124         kportal_daemonize("kranal_reaper");
1125         kportal_blockallsigs();
1126
1127         init_waitqueue_entry(&wait, current);
1128
1129         spin_lock_irqsave(&kranal_data.kra_reaper_lock, flags);
1130
1131         while (!kranal_data.kra_shutdown) {
1132
1133                 /* careful with the jiffy wrap... */
1134                 timeout = (long)(next_check_time - jiffies);
1135                 if (timeout <= 0) {
1136
1137                         /* I wake up every 'p' seconds to check for
1138                          * timeouts on some more peers.  I try to check
1139                          * every connection 'n' times within the global
1140                          * minimum of all keepalive and timeout intervals,
1141                          * to ensure I attend to every connection within
1142                          * (n+1)/n times its timeout intervals. */
1143
1144                         const int     p = 1;
1145                         const int     n = 3;
1146                         unsigned long min_timeout;
1147                         int           chunk;
1148
1149                         if (kranal_data.kra_new_min_timeout != MAX_SCHEDULE_TIMEOUT) {
1150                                 /* new min timeout set: restart min timeout scan */
1151                                 next_min_timeout = MAX_SCHEDULE_TIMEOUT;
1152                                 base_index = conn_index - 1;
1153                                 if (base_index < 0)
1154                                         base_index = conn_entries - 1;
1155
1156                                 if (kranal_data.kra_new_min_timeout < current_min_timeout) {
1157                                         current_min_timeout = kranal_data.kra_new_min_timeout;
1158                                         CWARN("Set new min timeout %ld\n",
1159                                               current_min_timeout);
1160                                 }
1161
1162                                 kranal_data.kra_new_min_timeout = MAX_SCHEDULE_TIMEOUT;
1163                         }
1164                         min_timeout = current_min_timeout;
1165
1166                         spin_unlock_irqrestore(&kranal_data.kra_reaper_lock,
1167                                                flags);
1168
1169                         LASSERT (min_timeout > 0);
1170
1171                         /* Compute how many table entries to check now so I
1172                          * get round the whole table fast enough (NB I do
1173                          * this at fixed intervals of 'p' seconds) */
1174                         chunk = conn_entries;
1175                         if (min_timeout > n * p)
1176                                 chunk = (chunk * n * p) / min_timeout;
1177                         if (chunk == 0)
1178                                 chunk = 1;
1179
1180                         for (i = 0; i < chunk; i++) {
1181                                 kranal_reaper_check(conn_index,
1182                                                     &next_min_timeout);
1183                                 conn_index = (conn_index + 1) % conn_entries;
1184                         }
1185
1186                         next_check_time += p * HZ;
1187
1188                         spin_lock_irqsave(&kranal_data.kra_reaper_lock, flags);
1189
1190                         if (((conn_index - chunk <= base_index &&
1191                               base_index < conn_index) ||
1192                              (conn_index - conn_entries - chunk <= base_index &&
1193                               base_index < conn_index - conn_entries))) {
1194
1195                                 /* Scanned all conns: set current_min_timeout... */
1196                                 if (current_min_timeout != next_min_timeout) {
1197                                         current_min_timeout = next_min_timeout;
1198                                         CWARN("Set new min timeout %ld\n",
1199                                               current_min_timeout);
1200                                 }
1201
1202                                 /* ...and restart min timeout scan */
1203                                 next_min_timeout = MAX_SCHEDULE_TIMEOUT;
1204                                 base_index = conn_index - 1;
1205                                 if (base_index < 0)
1206                                         base_index = conn_entries - 1;
1207                         }
1208                 }
1209
1210                 set_current_state(TASK_INTERRUPTIBLE);
1211                 add_wait_queue(&kranal_data.kra_reaper_waitq, &wait);
1212
1213                 spin_unlock_irqrestore(&kranal_data.kra_reaper_lock, flags);
1214
1215                 schedule_timeout(timeout);
1216
1217                 spin_lock_irqsave(&kranal_data.kra_reaper_lock, flags);
1218
1219                 set_current_state(TASK_RUNNING);
1220                 remove_wait_queue(&kranal_data.kra_reaper_waitq, &wait);
1221         }
1222
1223         kranal_thread_fini();
1224         return 0;
1225 }
1226
1227 void
1228 kranal_check_rdma_cq (kra_device_t *dev)
1229 {
1230         kra_conn_t          *conn;
1231         kra_tx_t            *tx;
1232         RAP_RETURN           rrc;
1233         unsigned long        flags;
1234         RAP_RDMA_DESCRIPTOR *desc;
1235         __u32                cqid;
1236         __u32                event_type;
1237
1238         for (;;) {
1239                 rrc = RapkCQDone(dev->rad_rdma_cqh, &cqid, &event_type);
1240                 if (rrc == RAP_NOT_DONE)
1241                         return;
1242
1243                 LASSERT (rrc == RAP_SUCCESS);
1244                 LASSERT ((event_type & RAPK_CQ_EVENT_OVERRUN) == 0);
1245
1246                 read_lock(&kranal_data.kra_global_lock);
1247
1248                 conn = kranal_cqid2conn_locked(cqid);
1249                 if (conn == NULL) {
1250                         /* Conn was destroyed? */
1251                         CWARN("RDMA CQID lookup %d failed\n", cqid);
1252                         read_unlock(&kranal_data.kra_global_lock);
1253                         continue;
1254                 }
1255
1256                 rrc = RapkRdmaDone(conn->rac_rihandle, &desc);
1257                 LASSERT (rrc == RAP_SUCCESS);
1258
1259                 spin_lock_irqsave(&conn->rac_lock, flags);
1260
1261                 LASSERT (!list_empty(&conn->rac_rdmaq));
1262                 tx = list_entry(conn->rac_rdmaq.next, kra_tx_t, tx_list);
1263                 list_del(&tx->tx_list);
1264
1265                 LASSERT(desc->AppPtr == (void *)tx);
1266                 LASSERT(tx->tx_msg.ram_type == RANAL_MSG_PUT_DONE ||
1267                         tx->tx_msg.ram_type == RANAL_MSG_GET_DONE);
1268
1269                 list_add_tail(&tx->tx_list, &conn->rac_fmaq);
1270                 tx->tx_qtime = jiffies;
1271
1272                 spin_unlock_irqrestore(&conn->rac_lock, flags);
1273
1274                 /* Get conn's fmaq processed, now I've just put something
1275                  * there */
1276                 kranal_schedule_conn(conn);
1277
1278                 read_unlock(&kranal_data.kra_global_lock);
1279         }
1280 }
1281
1282 void
1283 kranal_check_fma_cq (kra_device_t *dev)
1284 {
1285         kra_conn_t         *conn;
1286         RAP_RETURN          rrc;
1287         __u32               cqid;
1288         __u32               event_type;
1289         struct list_head   *conns;
1290         struct list_head   *tmp;
1291         int                 i;
1292
1293         for (;;) {
1294                 rrc = RapkCQDone(dev->rad_fma_cqh, &cqid, &event_type);
1295                 if (rrc != RAP_NOT_DONE)
1296                         return;
1297
1298                 LASSERT (rrc == RAP_SUCCESS);
1299
1300                 if ((event_type & RAPK_CQ_EVENT_OVERRUN) == 0) {
1301
1302                         read_lock(&kranal_data.kra_global_lock);
1303
1304                         conn = kranal_cqid2conn_locked(cqid);
1305                         if (conn == NULL)
1306                                 CWARN("FMA CQID lookup %d failed\n", cqid);
1307                         else
1308                                 kranal_schedule_conn(conn);
1309
1310                         read_unlock(&kranal_data.kra_global_lock);
1311                         continue;
1312                 }
1313
1314                 /* FMA CQ has overflowed: check ALL conns */
1315                 CWARN("Scheduling ALL conns on device %d\n", dev->rad_id);
1316
1317                 for (i = 0; i < kranal_data.kra_conn_hash_size; i++) {
1318
1319                         read_lock(&kranal_data.kra_global_lock);
1320
1321                         conns = &kranal_data.kra_conns[i];
1322
1323                         list_for_each (tmp, conns) {
1324                                 conn = list_entry(tmp, kra_conn_t,
1325                                                   rac_hashlist);
1326
1327                                 if (conn->rac_device == dev)
1328                                         kranal_schedule_conn(conn);
1329                         }
1330
1331                         /* don't block write lockers for too long... */
1332                         read_unlock(&kranal_data.kra_global_lock);
1333                 }
1334         }
1335 }
1336
1337 int
1338 kranal_sendmsg(kra_conn_t *conn, kra_msg_t *msg,
1339                void *immediate, int immediatenob)
1340 {
1341         int        sync = (msg->ram_type & RANAL_MSG_FENCE) != 0;
1342         RAP_RETURN rrc;
1343
1344         LASSERT (sizeof(*msg) <= RANAL_FMA_MAX_PREFIX);
1345         LASSERT ((msg->ram_type == RANAL_MSG_IMMEDIATE) ?
1346                  immediatenob <= RANAL_FMA_MAX_DATA :
1347                  immediatenob == 0);
1348
1349         msg->ram_connstamp = conn->rac_my_connstamp;
1350         msg->ram_seq = conn->rac_tx_seq;
1351
1352         if (sync)
1353                 rrc = RapkFmaSyncSend(conn->rac_device->rad_handle,
1354                                       immediate, immediatenob,
1355                                       msg, sizeof(*msg));
1356         else
1357                 rrc = RapkFmaSend(conn->rac_device->rad_handle,
1358                                   immediate, immediatenob,
1359                                   msg, sizeof(*msg));
1360
1361         switch (rrc) {
1362         default:
1363                 LBUG();
1364
1365         case RAP_SUCCESS:
1366                 conn->rac_last_tx = jiffies;
1367                 conn->rac_tx_seq++;
1368                 return 0;
1369
1370         case RAP_NOT_DONE:
1371                 return -EAGAIN;
1372         }
1373 }
1374
1375 void
1376 kranal_process_fmaq (kra_conn_t *conn)
1377 {
1378         unsigned long flags;
1379         int           more_to_do;
1380         kra_tx_t     *tx;
1381         int           rc;
1382         int           expect_reply;
1383
1384         /* NB 1. kranal_sendmsg() may fail if I'm out of credits right now.
1385          *       However I will be rescheduled some by an FMA completion event
1386          *       when I eventually get some.
1387          * NB 2. Sampling rac_state here, races with setting it elsewhere
1388          *       kranal_close_conn_locked.  But it doesn't matter if I try to
1389          *       send a "real" message just as I start closing because I'll get
1390          *       scheduled to send the close anyway. */
1391
1392         if (conn->rac_state != RANAL_CONN_ESTABLISHED) {
1393                 if (!list_empty(&conn->rac_rdmaq)) {
1394                         /* RDMAs in progress */
1395                         LASSERT (!conn->rac_close_sent);
1396
1397                         if (time_after_eq(jiffies,
1398                                           conn->rac_last_tx +
1399                                           conn->rac_keepalive)) {
1400                                 kranal_init_msg(&conn->rac_msg, RANAL_MSG_NOOP);
1401                                 kranal_sendmsg(conn, &conn->rac_msg, NULL, 0);
1402                         }
1403                         return;
1404                 }
1405
1406                 if (conn->rac_close_sent)
1407                         return;
1408
1409                 kranal_init_msg(&conn->rac_msg, RANAL_MSG_CLOSE);
1410                 rc = kranal_sendmsg(conn, &conn->rac_msg, NULL, 0);
1411                 if (rc != 0)
1412                         return;
1413
1414                 conn->rac_close_sent = 1;
1415                 if (!conn->rac_close_recvd)
1416                         return;
1417
1418                 write_lock_irqsave(&kranal_data.kra_global_lock, flags);
1419
1420                 if (conn->rac_state == RANAL_CONN_CLOSING)
1421                         kranal_terminate_conn_locked(conn);
1422
1423                 write_unlock_irqrestore(&kranal_data.kra_global_lock, flags);
1424                 return;
1425         }
1426
1427         spin_lock_irqsave(&conn->rac_lock, flags);
1428
1429         if (list_empty(&conn->rac_fmaq)) {
1430
1431                 spin_unlock_irqrestore(&conn->rac_lock, flags);
1432
1433                 if (time_after_eq(jiffies,
1434                                   conn->rac_last_tx + conn->rac_keepalive)) {
1435                         kranal_init_msg(&conn->rac_msg, RANAL_MSG_NOOP);
1436                         kranal_sendmsg(conn, &conn->rac_msg, NULL, 0);
1437                 }
1438                 return;
1439         }
1440
1441         tx = list_entry(conn->rac_fmaq.next, kra_tx_t, tx_list);
1442         list_del(&tx->tx_list);
1443         more_to_do = !list_empty(&conn->rac_fmaq);
1444
1445         spin_unlock_irqrestore(&conn->rac_lock, flags);
1446
1447         expect_reply = 0;
1448         switch (tx->tx_msg.ram_type) {
1449         default:
1450                 LBUG();
1451
1452         case RANAL_MSG_IMMEDIATE:
1453         case RANAL_MSG_PUT_NAK:
1454         case RANAL_MSG_PUT_DONE:
1455         case RANAL_MSG_GET_NAK:
1456         case RANAL_MSG_GET_DONE:
1457                 rc = kranal_sendmsg(conn, &tx->tx_msg,
1458                                     tx->tx_buffer, tx->tx_nob);
1459                 expect_reply = 0;
1460                 break;
1461
1462         case RANAL_MSG_PUT_REQ:
1463                 tx->tx_msg.ram_u.putreq.raprm_cookie = tx->tx_cookie;
1464                 rc = kranal_sendmsg(conn, &tx->tx_msg, NULL, 0);
1465                 kranal_map_buffer(tx);
1466                 expect_reply = 1;
1467                 break;
1468
1469         case RANAL_MSG_PUT_ACK:
1470                 rc = kranal_sendmsg(conn, &tx->tx_msg, NULL, 0);
1471                 expect_reply = 1;
1472                 break;
1473
1474         case RANAL_MSG_GET_REQ:
1475                 kranal_map_buffer(tx);
1476                 tx->tx_msg.ram_u.get.ragm_cookie = tx->tx_cookie;
1477                 tx->tx_msg.ram_u.get.ragm_desc.rard_key = tx->tx_map_key;
1478                 tx->tx_msg.ram_u.get.ragm_desc.rard_addr.AddressBits =
1479                         (__u64)((unsigned long)tx->tx_buffer);
1480                 tx->tx_msg.ram_u.get.ragm_desc.rard_nob = tx->tx_nob;
1481                 rc = kranal_sendmsg(conn, &tx->tx_msg, NULL, 0);
1482                 expect_reply = 1;
1483                 break;
1484         }
1485
1486         if (rc == -EAGAIN) {
1487                 /* I need credits to send this.  Replace tx at the head of the
1488                  * fmaq and I'll get rescheduled when credits appear */
1489                 spin_lock_irqsave(&conn->rac_lock, flags);
1490                 list_add(&tx->tx_list, &conn->rac_fmaq);
1491                 spin_unlock_irqrestore(&conn->rac_lock, flags);
1492                 return;
1493         }
1494
1495         LASSERT (rc == 0);
1496
1497         if (!expect_reply) {
1498                 kranal_tx_done(tx, 0);
1499         } else {
1500                 spin_lock_irqsave(&conn->rac_lock, flags);
1501                 list_add_tail(&tx->tx_list, &conn->rac_replyq);
1502                 tx->tx_qtime = jiffies;
1503                 spin_unlock_irqrestore(&conn->rac_lock, flags);
1504         }
1505
1506         if (more_to_do)
1507                 kranal_schedule_conn(conn);
1508 }
1509
1510 static inline void
1511 kranal_swab_rdma_desc (kra_rdma_desc_t *d)
1512 {
1513         __swab64s(&d->rard_key.Key);
1514         __swab16s(&d->rard_key.Cookie);
1515         __swab16s(&d->rard_key.MdHandle);
1516         __swab32s(&d->rard_key.Flags);
1517         __swab64s(&d->rard_addr.AddressBits);
1518         __swab32s(&d->rard_nob);
1519 }
1520
1521 kra_tx_t *
1522 kranal_match_reply(kra_conn_t *conn, int type, __u64 cookie)
1523 {
1524         struct list_head *ttmp;
1525         kra_tx_t         *tx;
1526
1527         list_for_each(ttmp, &conn->rac_replyq) {
1528                 tx = list_entry(ttmp, kra_tx_t, tx_list);
1529
1530                 if (tx->tx_cookie != cookie)
1531                         continue;
1532
1533                 if (tx->tx_msg.ram_type != type) {
1534                         CWARN("Unexpected type %x (%x expected) "
1535                               "matched reply from "LPX64"\n",
1536                               tx->tx_msg.ram_type, type,
1537                               conn->rac_peer->rap_nid);
1538                         return NULL;
1539                 }
1540         }
1541
1542         CWARN("Unmatched reply from "LPX64"\n", conn->rac_peer->rap_nid);
1543         return NULL;
1544 }
1545
1546 void
1547 kranal_check_fma_rx (kra_conn_t *conn)
1548 {
1549         unsigned long flags;
1550         __u32         seq;
1551         kra_tx_t     *tx;
1552         kra_msg_t    *msg;
1553         void         *prefix;
1554         RAP_RETURN    rrc = RapkFmaGetPrefix(conn->rac_rihandle, &prefix);
1555         kra_peer_t   *peer = conn->rac_peer;
1556
1557         if (rrc == RAP_NOT_DONE)
1558                 return;
1559
1560         LASSERT (rrc == RAP_SUCCESS);
1561         conn->rac_last_rx = jiffies;
1562         seq = conn->rac_rx_seq++;
1563         msg = (kra_msg_t *)prefix;
1564
1565         if (msg->ram_magic != RANAL_MSG_MAGIC) {
1566                 if (__swab32(msg->ram_magic) != RANAL_MSG_MAGIC) {
1567                         CERROR("Unexpected magic %08x from "LPX64"\n",
1568                                msg->ram_magic, peer->rap_nid);
1569                         goto out;
1570                 }
1571
1572                 __swab32s(&msg->ram_magic);
1573                 __swab16s(&msg->ram_version);
1574                 __swab16s(&msg->ram_type);
1575                 __swab64s(&msg->ram_srcnid);
1576                 __swab64s(&msg->ram_connstamp);
1577                 __swab32s(&msg->ram_seq);
1578
1579                 /* NB message type checked below; NOT here... */
1580                 switch (msg->ram_type) {
1581                 case RANAL_MSG_PUT_ACK:
1582                         kranal_swab_rdma_desc(&msg->ram_u.putack.rapam_desc);
1583                         break;
1584
1585                 case RANAL_MSG_GET_REQ:
1586                         kranal_swab_rdma_desc(&msg->ram_u.get.ragm_desc);
1587                         break;
1588
1589                 default:
1590                         break;
1591                 }
1592         }
1593
1594         if (msg->ram_version != RANAL_MSG_VERSION) {
1595                 CERROR("Unexpected protocol version %d from "LPX64"\n",
1596                        msg->ram_version, peer->rap_nid);
1597                 goto out;
1598         }
1599
1600         if (msg->ram_srcnid != peer->rap_nid) {
1601                 CERROR("Unexpected peer "LPX64" from "LPX64"\n",
1602                        msg->ram_srcnid, peer->rap_nid);
1603                 goto out;
1604         }
1605
1606         if (msg->ram_connstamp != conn->rac_peer_connstamp) {
1607                 CERROR("Unexpected connstamp "LPX64"("LPX64
1608                        " expected) from "LPX64"\n",
1609                        msg->ram_connstamp, conn->rac_peer_connstamp,
1610                        peer->rap_nid);
1611                 goto out;
1612         }
1613
1614         if (msg->ram_seq != seq) {
1615                 CERROR("Unexpected sequence number %d(%d expected) from "
1616                        LPX64"\n", msg->ram_seq, seq, peer->rap_nid);
1617                 goto out;
1618         }
1619
1620         if ((msg->ram_type & RANAL_MSG_FENCE) != 0) {
1621                 /* This message signals RDMA completion... */
1622                 rrc = RapkFmaSyncWait(conn->rac_rihandle);
1623                 LASSERT (rrc == RAP_SUCCESS);
1624         }
1625
1626         if (conn->rac_close_recvd) {
1627                 CERROR("Unexpected message %d after CLOSE from "LPX64"\n",
1628                        msg->ram_type, conn->rac_peer->rap_nid);
1629                 goto out;
1630         }
1631
1632         if (msg->ram_type == RANAL_MSG_CLOSE) {
1633                 conn->rac_close_recvd = 1;
1634                 write_lock_irqsave(&kranal_data.kra_global_lock, flags);
1635
1636                 if (conn->rac_state == RANAL_CONN_ESTABLISHED)
1637                         kranal_close_conn_locked(conn, 0);
1638                 else if (conn->rac_close_sent)
1639                         kranal_terminate_conn_locked(conn);
1640
1641                 write_unlock_irqrestore(&kranal_data.kra_global_lock, flags);
1642                 goto out;
1643         }
1644
1645         if (conn->rac_state != RANAL_CONN_ESTABLISHED)
1646                 goto out;
1647
1648         conn->rac_rxmsg = msg;                  /* stash message for portals callbacks */
1649                                                 /* they'll NULL rac_rxmsg if they consume it */
1650         switch (msg->ram_type) {
1651         case RANAL_MSG_NOOP:
1652                 /* Nothing to do; just a keepalive */
1653                 break;
1654
1655         case RANAL_MSG_IMMEDIATE:
1656                 lib_parse(&kranal_lib, &msg->ram_u.immediate.raim_hdr, conn);
1657                 break;
1658
1659         case RANAL_MSG_PUT_REQ:
1660                 lib_parse(&kranal_lib, &msg->ram_u.putreq.raprm_hdr, conn);
1661
1662                 if (conn->rac_rxmsg == NULL)    /* lib_parse matched something */
1663                         break;
1664
1665                 tx = kranal_new_tx_msg(0, RANAL_MSG_PUT_NAK);
1666                 if (tx == NULL)
1667                         break;
1668
1669                 tx->tx_msg.ram_u.completion.racm_cookie =
1670                         msg->ram_u.putreq.raprm_cookie;
1671                 kranal_post_fma(conn, tx);
1672                 break;
1673
1674         case RANAL_MSG_PUT_NAK:
1675                 tx = kranal_match_reply(conn, RANAL_MSG_PUT_REQ,
1676                                         msg->ram_u.completion.racm_cookie);
1677                 if (tx == NULL)
1678                         break;
1679
1680                 LASSERT (tx->tx_buftype == RANAL_BUF_PHYS_MAPPED ||
1681                          tx->tx_buftype == RANAL_BUF_VIRT_MAPPED);
1682                 kranal_tx_done(tx, -ENOENT);    /* no match */
1683                 break;
1684
1685         case RANAL_MSG_PUT_ACK:
1686                 tx = kranal_match_reply(conn, RANAL_MSG_PUT_REQ,
1687                                         msg->ram_u.putack.rapam_src_cookie);
1688                 if (tx == NULL)
1689                         break;
1690
1691                 kranal_rdma(tx, RANAL_MSG_PUT_DONE,
1692                             &msg->ram_u.putack.rapam_desc,
1693                             msg->ram_u.putack.rapam_desc.rard_nob,
1694                             msg->ram_u.putack.rapam_dst_cookie);
1695                 break;
1696
1697         case RANAL_MSG_PUT_DONE:
1698                 tx = kranal_match_reply(conn, RANAL_MSG_PUT_ACK,
1699                                         msg->ram_u.completion.racm_cookie);
1700                 if (tx == NULL)
1701                         break;
1702
1703                 LASSERT (tx->tx_buftype == RANAL_BUF_PHYS_MAPPED ||
1704                          tx->tx_buftype == RANAL_BUF_VIRT_MAPPED);
1705                 kranal_tx_done(tx, 0);
1706                 break;
1707
1708         case RANAL_MSG_GET_REQ:
1709                 lib_parse(&kranal_lib, &msg->ram_u.get.ragm_hdr, conn);
1710
1711                 if (conn->rac_rxmsg == NULL)    /* lib_parse matched something */
1712                         break;
1713
1714                 tx = kranal_new_tx_msg(0, RANAL_MSG_GET_NAK);
1715                 if (tx == NULL)
1716                         break;
1717
1718                 tx->tx_msg.ram_u.completion.racm_cookie = msg->ram_u.get.ragm_cookie;
1719                 kranal_post_fma(conn, tx);
1720                 break;
1721
1722         case RANAL_MSG_GET_NAK:
1723                 tx = kranal_match_reply(conn, RANAL_MSG_GET_REQ,
1724                                         msg->ram_u.completion.racm_cookie);
1725                 if (tx == NULL)
1726                         break;
1727
1728                 LASSERT (tx->tx_buftype == RANAL_BUF_PHYS_MAPPED ||
1729                          tx->tx_buftype == RANAL_BUF_VIRT_MAPPED);
1730                 kranal_tx_done(tx, -ENOENT);    /* no match */
1731                 break;
1732
1733         case RANAL_MSG_GET_DONE:
1734                 tx = kranal_match_reply(conn, RANAL_MSG_GET_REQ,
1735                                         msg->ram_u.completion.racm_cookie);
1736                 if (tx == NULL)
1737                         break;
1738
1739                 LASSERT (tx->tx_buftype == RANAL_BUF_PHYS_MAPPED ||
1740                          tx->tx_buftype == RANAL_BUF_VIRT_MAPPED);
1741                 kranal_tx_done(tx, 0);
1742                 break;
1743         }
1744
1745  out:
1746         if (conn->rac_rxmsg != NULL)
1747                 kranal_consume_rxmsg(conn, NULL, 0);
1748
1749         /* check again later */
1750         kranal_schedule_conn(conn);
1751 }
1752
1753 void
1754 kranal_complete_closed_conn (kra_conn_t *conn)
1755 {
1756         kra_tx_t   *tx;
1757
1758         LASSERT (conn->rac_state == RANAL_CONN_CLOSED);
1759
1760         while (!list_empty(&conn->rac_fmaq)) {
1761                 tx = list_entry(conn->rac_fmaq.next, kra_tx_t, tx_list);
1762
1763                 list_del(&tx->tx_list);
1764                 kranal_tx_done(tx, -ECONNABORTED);
1765         }
1766
1767         LASSERT (list_empty(&conn->rac_rdmaq));
1768
1769         while (!list_empty(&conn->rac_replyq)) {
1770                 tx = list_entry(conn->rac_replyq.next, kra_tx_t, tx_list);
1771
1772                 list_del(&tx->tx_list);
1773                 kranal_tx_done(tx, -ECONNABORTED);
1774         }
1775 }
1776
1777 int
1778 kranal_scheduler (void *arg)
1779 {
1780         kra_device_t   *dev = (kra_device_t *)arg;
1781         wait_queue_t    wait;
1782         char            name[16];
1783         kra_conn_t     *conn;
1784         unsigned long   flags;
1785         int             busy_loops = 0;
1786
1787         snprintf(name, sizeof(name), "kranal_sd_%02d", dev->rad_idx);
1788         kportal_daemonize(name);
1789         kportal_blockallsigs();
1790
1791         dev->rad_scheduler = current;
1792         init_waitqueue_entry(&wait, current);
1793
1794         spin_lock_irqsave(&dev->rad_lock, flags);
1795
1796         while (!kranal_data.kra_shutdown) {
1797                 /* Safe: kra_shutdown only set when quiescent */
1798
1799                 if (busy_loops++ >= RANAL_RESCHED) {
1800                         spin_unlock_irqrestore(&dev->rad_lock, flags);
1801
1802                         our_cond_resched();
1803                         busy_loops = 0;
1804
1805                         spin_lock_irqsave(&dev->rad_lock, flags);
1806                 }
1807
1808                 if (dev->rad_ready) {
1809                         /* Device callback fired since I last checked it */
1810                         dev->rad_ready = 0;
1811                         spin_unlock_irqrestore(&dev->rad_lock, flags);
1812
1813                         kranal_check_rdma_cq(dev);
1814                         kranal_check_fma_cq(dev);
1815
1816                         spin_lock_irqsave(&dev->rad_lock, flags);
1817                 }
1818
1819                 if (!list_empty(&dev->rad_connq)) {
1820                         /* Connection needs attention */
1821                         conn = list_entry(dev->rad_connq.next,
1822                                           kra_conn_t, rac_schedlist);
1823                         list_del_init(&conn->rac_schedlist);
1824                         LASSERT (conn->rac_scheduled);
1825                         conn->rac_scheduled = 0;
1826                         spin_unlock_irqrestore(&dev->rad_lock, flags);
1827
1828                         kranal_check_fma_rx(conn);
1829                         kranal_process_fmaq(conn);
1830
1831                         if (conn->rac_state == RANAL_CONN_CLOSED)
1832                                 kranal_complete_closed_conn(conn);
1833
1834                         kranal_conn_decref(conn);
1835
1836                         spin_lock_irqsave(&dev->rad_lock, flags);
1837                         continue;
1838                 }
1839
1840                 add_wait_queue(&dev->rad_waitq, &wait);
1841                 set_current_state(TASK_INTERRUPTIBLE);
1842
1843                 spin_unlock_irqrestore(&dev->rad_lock, flags);
1844
1845                 busy_loops = 0;
1846                 schedule();
1847
1848                 set_current_state(TASK_RUNNING);
1849                 remove_wait_queue(&dev->rad_waitq, &wait);
1850
1851                 spin_lock_irqsave(&dev->rad_lock, flags);
1852         }
1853
1854         spin_unlock_irqrestore(&dev->rad_lock, flags);
1855
1856         dev->rad_scheduler = NULL;
1857         kranal_thread_fini();
1858         return 0;
1859 }
1860
1861
1862 lib_nal_t kranal_lib = {
1863         libnal_data:        &kranal_data,      /* NAL private data */
1864         libnal_send:         kranal_send,
1865         libnal_send_pages:   kranal_send_pages,
1866         libnal_recv:         kranal_recv,
1867         libnal_recv_pages:   kranal_recv_pages,
1868         libnal_dist:         kranal_dist
1869 };