lnet/selftest/brw_test.c

   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.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  */
  30 /*
  31  * This file is part of Lustre, http://www.lustre.org/
  32  * Lustre is a trademark of Sun Microsystems, Inc.
  33  *
  34  * lnet/selftest/brw_test.c
  35  *
  36  * Author: Isaac Huang <isaac@clusterfs.com>
  37  */
  38
  39 #include "selftest.h"
  40
  41
  42 extern int brw_inject_errors;
  43
  44 static void
  45 brw_client_fini (sfw_test_instance_t *tsi)
  46 {
  47         srpc_bulk_t     *bulk;
  48         sfw_test_unit_t *tsu;
  49
  50         LASSERT (tsi->tsi_is_client);
  51
  52         cfs_list_for_each_entry_typed (tsu, &tsi->tsi_units,
  53                                        sfw_test_unit_t, tsu_list) {
  54                 bulk = tsu->tsu_private;
  55                 if (bulk == NULL) continue;
  56
  57                 srpc_free_bulk(bulk);
  58                 tsu->tsu_private = NULL;
  59         }
  60 }
  61
  62 int
  63 brw_client_init (sfw_test_instance_t *tsi)
  64 {
  65         test_bulk_req_t  *breq = &tsi->tsi_u.bulk;
  66         int               flags = breq->blk_flags;
  67         int               npg = breq->blk_npg;
  68         srpc_bulk_t      *bulk;
  69         sfw_test_unit_t  *tsu;
  70
  71         LASSERT (tsi->tsi_is_client);
  72
  73         if (npg > LNET_MAX_IOV || npg <= 0)
  74                 return -EINVAL;
  75
  76         if (breq->blk_opc != LST_BRW_READ && breq->blk_opc != LST_BRW_WRITE)
  77                 return -EINVAL;
  78
  79         if (flags != LST_BRW_CHECK_NONE &&
  80             flags != LST_BRW_CHECK_FULL && flags != LST_BRW_CHECK_SIMPLE)
  81                 return -EINVAL;
  82
  83         cfs_list_for_each_entry_typed (tsu, &tsi->tsi_units,
  84                                        sfw_test_unit_t, tsu_list) {
  85                 bulk = srpc_alloc_bulk(npg, breq->blk_opc == LST_BRW_READ);
  86                 if (bulk == NULL) {
  87                         brw_client_fini(tsi);
  88                         return -ENOMEM;
  89                 }
  90
  91                 tsu->tsu_private = bulk;
  92         }
  93
  94         return 0;
  95 }
  96
  97 #define BRW_POISON      0xbeefbeefbeefbeefULL
  98 #define BRW_MAGIC       0xeeb0eeb1eeb2eeb3ULL
  99 #define BRW_MSIZE       sizeof(__u64)
 100
 101 int
 102 brw_inject_one_error (void)
 103 {
 104         struct timeval tv;
 105
 106         if (brw_inject_errors <= 0) return 0;
 107
 108 #ifndef __KERNEL__
 109         gettimeofday(&tv, NULL);
 110 #else
 111         cfs_gettimeofday(&tv);
 112 #endif
 113
 114         if ((tv.tv_usec & 1) == 0) return 0;
 115
 116         return brw_inject_errors--;
 117 }
 118
 119 void
 120 brw_fill_page (cfs_page_t *pg, int pattern, __u64 magic)
 121 {
 122         char *addr = cfs_page_address(pg);
 123         int   i;
 124
 125         LASSERT (addr != NULL);
 126
 127         if (pattern == LST_BRW_CHECK_NONE) return;
 128
 129         if (magic == BRW_MAGIC)
 130                 magic += brw_inject_one_error();
 131
 132         if (pattern == LST_BRW_CHECK_SIMPLE) {
 133                 memcpy(addr, &magic, BRW_MSIZE);
 134                 addr += CFS_PAGE_SIZE - BRW_MSIZE;
 135                 memcpy(addr, &magic, BRW_MSIZE);
 136                 return;
 137         }
 138
 139         if (pattern == LST_BRW_CHECK_FULL) {
 140                 for (i = 0; i < CFS_PAGE_SIZE / BRW_MSIZE; i++)
 141                         memcpy(addr + i * BRW_MSIZE, &magic, BRW_MSIZE);
 142                 return;
 143         }
 144
 145         LBUG ();
 146         return;
 147 }
 148
 149 int
 150 brw_check_page (cfs_page_t *pg, int pattern, __u64 magic)
 151 {
 152         char  *addr = cfs_page_address(pg);
 153         __u64  data = 0; /* make compiler happy */
 154         int    i;
 155
 156         LASSERT (addr != NULL);
 157
 158         if (pattern == LST_BRW_CHECK_NONE)
 159                 return 0;
 160
 161         if (pattern == LST_BRW_CHECK_SIMPLE) {
 162                 data = *((__u64 *) addr);
 163                 if (data != magic) goto bad_data;
 164
 165                 addr += CFS_PAGE_SIZE - BRW_MSIZE;
 166                 data = *((__u64 *) addr);
 167                 if (data != magic) goto bad_data;
 168
 169                 return 0;
 170         }
 171
 172         if (pattern == LST_BRW_CHECK_FULL) {
 173                 for (i = 0; i < CFS_PAGE_SIZE / BRW_MSIZE; i++) {
 174                         data = *(((__u64 *) addr) + i);
 175                         if (data != magic) goto bad_data;
 176                 }
 177
 178                 return 0;
 179         }
 180
 181         LBUG ();
 182
 183 bad_data:
 184         CERROR ("Bad data in page %p: "LPX64", "LPX64" expected\n",
 185                 pg, data, magic);
 186         return 1;
 187 }
 188
 189 void
 190 brw_fill_bulk (srpc_bulk_t *bk, int pattern, __u64 magic)
 191 {
 192         int         i;
 193         cfs_page_t *pg;
 194
 195         for (i = 0; i < bk->bk_niov; i++) {
 196 #ifdef __KERNEL__
 197                 pg = bk->bk_iovs[i].kiov_page;
 198 #else
 199                 LASSERT (bk->bk_pages != NULL);
 200                 pg = bk->bk_pages[i];
 201 #endif
 202                 brw_fill_page(pg, pattern, magic);
 203         }
 204 }
 205
 206 int
 207 brw_check_bulk (srpc_bulk_t *bk, int pattern, __u64 magic)
 208 {
 209         int         i;
 210         cfs_page_t *pg;
 211
 212         for (i = 0; i < bk->bk_niov; i++) {
 213 #ifdef __KERNEL__
 214                 pg = bk->bk_iovs[i].kiov_page;
 215 #else
 216                 LASSERT (bk->bk_pages != NULL);
 217                 pg = bk->bk_pages[i];
 218 #endif
 219                 if (brw_check_page(pg, pattern, magic) != 0) {
 220                         CERROR ("Bulk page %p (%d/%d) is corrupted!\n",
 221                                 pg, i, bk->bk_niov);
 222                         return 1;
 223                 }
 224         }
 225
 226         return 0;
 227 }
 228
 229 static int
 230 brw_client_prep_rpc (sfw_test_unit_t *tsu,
 231                      lnet_process_id_t dest, srpc_client_rpc_t **rpcpp)
 232 {
 233         srpc_bulk_t         *bulk = tsu->tsu_private;
 234         sfw_test_instance_t *tsi = tsu->tsu_instance;
 235         test_bulk_req_t     *breq = &tsi->tsi_u.bulk;
 236         int                  npg = breq->blk_npg;
 237         int                  flags = breq->blk_flags;
 238         srpc_client_rpc_t   *rpc;
 239         srpc_brw_reqst_t    *req;
 240         int                  rc;
 241
 242         LASSERT (bulk != NULL);
 243         LASSERT (bulk->bk_niov == npg);
 244
 245         rc = sfw_create_test_rpc(tsu, dest, npg, npg * CFS_PAGE_SIZE, &rpc);
 246         if (rc != 0) return rc;
 247
 248         memcpy(&rpc->crpc_bulk, bulk, offsetof(srpc_bulk_t, bk_iovs[npg]));
 249         if (breq->blk_opc == LST_BRW_WRITE)
 250                 brw_fill_bulk(&rpc->crpc_bulk, flags, BRW_MAGIC);
 251         else
 252                 brw_fill_bulk(&rpc->crpc_bulk, flags, BRW_POISON);
 253
 254         req = &rpc->crpc_reqstmsg.msg_body.brw_reqst;
 255         req->brw_flags = flags;
 256         req->brw_rw    = breq->blk_opc;
 257         req->brw_len   = npg * CFS_PAGE_SIZE;
 258
 259         *rpcpp = rpc;
 260         return 0;
 261 }
 262
 263 static void
 264 brw_client_done_rpc (sfw_test_unit_t *tsu, srpc_client_rpc_t *rpc)
 265 {
 266         __u64                magic = BRW_MAGIC;
 267         sfw_test_instance_t *tsi = tsu->tsu_instance;
 268         sfw_session_t       *sn = tsi->tsi_batch->bat_session;
 269         srpc_msg_t          *msg = &rpc->crpc_replymsg;
 270         srpc_brw_reply_t    *reply = &msg->msg_body.brw_reply;
 271         srpc_brw_reqst_t    *reqst = &rpc->crpc_reqstmsg.msg_body.brw_reqst;
 272
 273         LASSERT (sn != NULL);
 274
 275         if (rpc->crpc_status != 0) {
 276                 CERROR ("BRW RPC to %s failed with %d\n",
 277                         libcfs_id2str(rpc->crpc_dest), rpc->crpc_status);
 278                 if (!tsi->tsi_stopping) /* rpc could have been aborted */
 279                         cfs_atomic_inc(&sn->sn_brw_errors);
 280                 goto out;
 281         }
 282
 283         if (msg->msg_magic != SRPC_MSG_MAGIC) {
 284                 __swab64s(&magic);
 285                 __swab32s(&reply->brw_status);
 286         }
 287
 288         CDEBUG (reply->brw_status ? D_WARNING : D_NET,
 289                 "BRW RPC to %s finished with brw_status: %d\n",
 290                 libcfs_id2str(rpc->crpc_dest), reply->brw_status);
 291
 292         if (reply->brw_status != 0) {
 293                 cfs_atomic_inc(&sn->sn_brw_errors);
 294                 rpc->crpc_status = -(int)reply->brw_status;
 295                 goto out;
 296         }
 297
 298         if (reqst->brw_rw == LST_BRW_WRITE) goto out;
 299
 300         if (brw_check_bulk(&rpc->crpc_bulk, reqst->brw_flags, magic) != 0) {
 301                 CERROR ("Bulk data from %s is corrupted!\n",
 302                         libcfs_id2str(rpc->crpc_dest));
 303                 cfs_atomic_inc(&sn->sn_brw_errors);
 304                 rpc->crpc_status = -EBADMSG;
 305         }
 306
 307 out:
 308 #ifndef __KERNEL__
 309         rpc->crpc_bulk.bk_pages = NULL;
 310 #endif
 311         return;
 312 }
 313
 314 void
 315 brw_server_rpc_done (srpc_server_rpc_t *rpc)
 316 {
 317         srpc_bulk_t *blk = rpc->srpc_bulk;
 318
 319         if (blk == NULL) return;
 320
 321         if (rpc->srpc_status != 0)
 322                 CERROR ("Bulk transfer %s %s has failed: %d\n",
 323                         blk->bk_sink ? "from" : "to",
 324                         libcfs_id2str(rpc->srpc_peer), rpc->srpc_status);
 325         else
 326                 CDEBUG (D_NET, "Transfered %d pages bulk data %s %s\n",
 327                         blk->bk_niov, blk->bk_sink ? "from" : "to",
 328                         libcfs_id2str(rpc->srpc_peer));
 329
 330         sfw_free_pages(rpc);
 331 }
 332
 333 int
 334 brw_bulk_ready (srpc_server_rpc_t *rpc, int status)
 335 {
 336         __u64             magic = BRW_MAGIC;
 337         srpc_brw_reply_t *reply = &rpc->srpc_replymsg.msg_body.brw_reply;
 338         srpc_brw_reqst_t *reqst;
 339         srpc_msg_t       *reqstmsg;
 340
 341         LASSERT (rpc->srpc_bulk != NULL);
 342         LASSERT (rpc->srpc_reqstbuf != NULL);
 343
 344         reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
 345         reqst = &reqstmsg->msg_body.brw_reqst;
 346
 347         if (status != 0) {
 348                 CERROR ("BRW bulk %s failed for RPC from %s: %d\n",
 349                         reqst->brw_rw == LST_BRW_READ ? "READ" : "WRITE",
 350                         libcfs_id2str(rpc->srpc_peer), status);
 351                 return -EIO;
 352         }
 353
 354         if (reqst->brw_rw == LST_BRW_READ)
 355                 return 0;
 356
 357         if (reqstmsg->msg_magic != SRPC_MSG_MAGIC)
 358                 __swab64s(&magic);
 359
 360         if (brw_check_bulk(rpc->srpc_bulk, reqst->brw_flags, magic) != 0) {
 361                 CERROR ("Bulk data from %s is corrupted!\n",
 362                         libcfs_id2str(rpc->srpc_peer));
 363                 reply->brw_status = EBADMSG;
 364         }
 365
 366         return 0;
 367 }
 368
 369 int
 370 brw_server_handle (srpc_server_rpc_t *rpc)
 371 {
 372         srpc_service_t   *sv = rpc->srpc_service;
 373         srpc_msg_t       *replymsg = &rpc->srpc_replymsg;
 374         srpc_msg_t       *reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
 375         srpc_brw_reply_t *reply = &replymsg->msg_body.brw_reply;
 376         srpc_brw_reqst_t *reqst = &reqstmsg->msg_body.brw_reqst;
 377         int               rc;
 378
 379         LASSERT (sv->sv_id == SRPC_SERVICE_BRW);
 380
 381         if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) {
 382                 LASSERT (reqstmsg->msg_magic == __swab32(SRPC_MSG_MAGIC));
 383
 384                 __swab32s(&reqstmsg->msg_type);
 385                 __swab32s(&reqst->brw_rw);
 386                 __swab32s(&reqst->brw_len);
 387                 __swab32s(&reqst->brw_flags);
 388                 __swab64s(&reqst->brw_rpyid);
 389                 __swab64s(&reqst->brw_bulkid);
 390         }
 391         LASSERT (reqstmsg->msg_type == (__u32)srpc_service2request(sv->sv_id));
 392
 393         rpc->srpc_done = brw_server_rpc_done;
 394
 395         if ((reqst->brw_rw != LST_BRW_READ && reqst->brw_rw != LST_BRW_WRITE) ||
 396             reqst->brw_len == 0 || (reqst->brw_len & ~CFS_PAGE_MASK) != 0 ||
 397             reqst->brw_len / CFS_PAGE_SIZE > LNET_MAX_IOV ||
 398             (reqst->brw_flags != LST_BRW_CHECK_NONE &&
 399              reqst->brw_flags != LST_BRW_CHECK_FULL &&
 400              reqst->brw_flags != LST_BRW_CHECK_SIMPLE)) {
 401                 reply->brw_status = EINVAL;
 402                 return 0;
 403         }
 404
 405         reply->brw_status = 0;
 406         rc = sfw_alloc_pages(rpc, reqst->brw_len / CFS_PAGE_SIZE,
 407                              reqst->brw_rw == LST_BRW_WRITE);
 408         if (rc != 0) return rc;
 409
 410         if (reqst->brw_rw == LST_BRW_READ)
 411                 brw_fill_bulk(rpc->srpc_bulk, reqst->brw_flags, BRW_MAGIC);
 412         else
 413                 brw_fill_bulk(rpc->srpc_bulk, reqst->brw_flags, BRW_POISON);
 414
 415         return 0;
 416 }
 417
 418 sfw_test_client_ops_t brw_test_client;
 419 void brw_init_test_client(void)
 420 {
 421         brw_test_client.tso_init       = brw_client_init;
 422         brw_test_client.tso_fini       = brw_client_fini;
 423         brw_test_client.tso_prep_rpc   = brw_client_prep_rpc;
 424         brw_test_client.tso_done_rpc   = brw_client_done_rpc;
 425 };
 426
 427 srpc_service_t brw_test_service;
 428 void brw_init_test_service(void)
 429 {
 430         brw_test_service.sv_id         = SRPC_SERVICE_BRW;
 431         brw_test_service.sv_name       = "brw_test";
 432         brw_test_service.sv_handler    = brw_server_handle;
 433         brw_test_service.sv_bulk_ready = brw_bulk_ready;
 434 }