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41#include "selftest.h"
42
43static int brw_srv_workitems = SFW_TEST_WI_MAX;
44CFS_MODULE_PARM(brw_srv_workitems, "i", int, 0644, "# BRW server workitems");
45
46static int brw_inject_errors;
47CFS_MODULE_PARM(brw_inject_errors, "i", int, 0644,
48 "# data errors to inject randomly, zero by default");
49
50static void
51brw_client_fini (sfw_test_instance_t *tsi)
52{
53 srpc_bulk_t *bulk;
54 sfw_test_unit_t *tsu;
55
56 LASSERT (tsi->tsi_is_client);
57
58 list_for_each_entry (tsu, &tsi->tsi_units, tsu_list) {
59 bulk = tsu->tsu_private;
60 if (bulk == NULL) continue;
61
62 srpc_free_bulk(bulk);
63 tsu->tsu_private = NULL;
64 }
65}
66
67int
68brw_client_init (sfw_test_instance_t *tsi)
69{
70 sfw_session_t *sn = tsi->tsi_batch->bat_session;
71 int flags;
72 int npg;
73 int len;
74 int opc;
75 srpc_bulk_t *bulk;
76 sfw_test_unit_t *tsu;
77
78 LASSERT(sn != NULL);
79 LASSERT(tsi->tsi_is_client);
80
81 if ((sn->sn_features & LST_FEAT_BULK_LEN) == 0) {
82 test_bulk_req_t *breq = &tsi->tsi_u.bulk_v0;
83
84 opc = breq->blk_opc;
85 flags = breq->blk_flags;
86 npg = breq->blk_npg;
87
88
89 len = npg * PAGE_CACHE_SIZE;
90
91 } else {
92 test_bulk_req_v1_t *breq = &tsi->tsi_u.bulk_v1;
93
94
95
96 LASSERT((sn->sn_features & ~LST_FEATS_MASK) == 0);
97
98 opc = breq->blk_opc;
99 flags = breq->blk_flags;
100 len = breq->blk_len;
101 npg = (len + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
102 }
103
104 if (npg > LNET_MAX_IOV || npg <= 0)
105 return -EINVAL;
106
107 if (opc != LST_BRW_READ && opc != LST_BRW_WRITE)
108 return -EINVAL;
109
110 if (flags != LST_BRW_CHECK_NONE &&
111 flags != LST_BRW_CHECK_FULL && flags != LST_BRW_CHECK_SIMPLE)
112 return -EINVAL;
113
114 list_for_each_entry(tsu, &tsi->tsi_units, tsu_list) {
115 bulk = srpc_alloc_bulk(lnet_cpt_of_nid(tsu->tsu_dest.nid),
116 npg, len, opc == LST_BRW_READ);
117 if (bulk == NULL) {
118 brw_client_fini(tsi);
119 return -ENOMEM;
120 }
121
122 tsu->tsu_private = bulk;
123 }
124
125 return 0;
126}
127
128#define BRW_POISON 0xbeefbeefbeefbeefULL
129#define BRW_MAGIC 0xeeb0eeb1eeb2eeb3ULL
130#define BRW_MSIZE sizeof(__u64)
131
132int
133brw_inject_one_error (void)
134{
135 struct timeval tv;
136
137 if (brw_inject_errors <= 0) return 0;
138
139 do_gettimeofday(&tv);
140
141 if ((tv.tv_usec & 1) == 0) return 0;
142
143 return brw_inject_errors--;
144}
145
146void
147brw_fill_page (struct page *pg, int pattern, __u64 magic)
148{
149 char *addr = page_address(pg);
150 int i;
151
152 LASSERT (addr != NULL);
153
154 if (pattern == LST_BRW_CHECK_NONE) return;
155
156 if (magic == BRW_MAGIC)
157 magic += brw_inject_one_error();
158
159 if (pattern == LST_BRW_CHECK_SIMPLE) {
160 memcpy(addr, &magic, BRW_MSIZE);
161 addr += PAGE_CACHE_SIZE - BRW_MSIZE;
162 memcpy(addr, &magic, BRW_MSIZE);
163 return;
164 }
165
166 if (pattern == LST_BRW_CHECK_FULL) {
167 for (i = 0; i < PAGE_CACHE_SIZE / BRW_MSIZE; i++)
168 memcpy(addr + i * BRW_MSIZE, &magic, BRW_MSIZE);
169 return;
170 }
171
172 LBUG ();
173 return;
174}
175
176int
177brw_check_page (struct page *pg, int pattern, __u64 magic)
178{
179 char *addr = page_address(pg);
180 __u64 data = 0;
181 int i;
182
183 LASSERT (addr != NULL);
184
185 if (pattern == LST_BRW_CHECK_NONE)
186 return 0;
187
188 if (pattern == LST_BRW_CHECK_SIMPLE) {
189 data = *((__u64 *) addr);
190 if (data != magic) goto bad_data;
191
192 addr += PAGE_CACHE_SIZE - BRW_MSIZE;
193 data = *((__u64 *) addr);
194 if (data != magic) goto bad_data;
195
196 return 0;
197 }
198
199 if (pattern == LST_BRW_CHECK_FULL) {
200 for (i = 0; i < PAGE_CACHE_SIZE / BRW_MSIZE; i++) {
201 data = *(((__u64 *) addr) + i);
202 if (data != magic) goto bad_data;
203 }
204
205 return 0;
206 }
207
208 LBUG ();
209
210bad_data:
211 CERROR ("Bad data in page %p: "LPX64", "LPX64" expected\n",
212 pg, data, magic);
213 return 1;
214}
215
216void
217brw_fill_bulk (srpc_bulk_t *bk, int pattern, __u64 magic)
218{
219 int i;
220 struct page *pg;
221
222 for (i = 0; i < bk->bk_niov; i++) {
223 pg = bk->bk_iovs[i].kiov_page;
224 brw_fill_page(pg, pattern, magic);
225 }
226}
227
228int
229brw_check_bulk (srpc_bulk_t *bk, int pattern, __u64 magic)
230{
231 int i;
232 struct page *pg;
233
234 for (i = 0; i < bk->bk_niov; i++) {
235 pg = bk->bk_iovs[i].kiov_page;
236 if (brw_check_page(pg, pattern, magic) != 0) {
237 CERROR ("Bulk page %p (%d/%d) is corrupted!\n",
238 pg, i, bk->bk_niov);
239 return 1;
240 }
241 }
242
243 return 0;
244}
245
246static int
247brw_client_prep_rpc (sfw_test_unit_t *tsu,
248 lnet_process_id_t dest, srpc_client_rpc_t **rpcpp)
249{
250 srpc_bulk_t *bulk = tsu->tsu_private;
251 sfw_test_instance_t *tsi = tsu->tsu_instance;
252 sfw_session_t *sn = tsi->tsi_batch->bat_session;
253 srpc_client_rpc_t *rpc;
254 srpc_brw_reqst_t *req;
255 int flags;
256 int npg;
257 int len;
258 int opc;
259 int rc;
260
261 LASSERT(sn != NULL);
262 LASSERT(bulk != NULL);
263
264 if ((sn->sn_features & LST_FEAT_BULK_LEN) == 0) {
265 test_bulk_req_t *breq = &tsi->tsi_u.bulk_v0;
266
267 opc = breq->blk_opc;
268 flags = breq->blk_flags;
269 npg = breq->blk_npg;
270 len = npg * PAGE_CACHE_SIZE;
271
272 } else {
273 test_bulk_req_v1_t *breq = &tsi->tsi_u.bulk_v1;
274
275
276
277 LASSERT((sn->sn_features & ~LST_FEATS_MASK) == 0);
278
279 opc = breq->blk_opc;
280 flags = breq->blk_flags;
281 len = breq->blk_len;
282 npg = (len + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
283 }
284
285 rc = sfw_create_test_rpc(tsu, dest, sn->sn_features, npg, len, &rpc);
286 if (rc != 0)
287 return rc;
288
289 memcpy(&rpc->crpc_bulk, bulk, offsetof(srpc_bulk_t, bk_iovs[npg]));
290 if (opc == LST_BRW_WRITE)
291 brw_fill_bulk(&rpc->crpc_bulk, flags, BRW_MAGIC);
292 else
293 brw_fill_bulk(&rpc->crpc_bulk, flags, BRW_POISON);
294
295 req = &rpc->crpc_reqstmsg.msg_body.brw_reqst;
296 req->brw_flags = flags;
297 req->brw_rw = opc;
298 req->brw_len = len;
299
300 *rpcpp = rpc;
301 return 0;
302}
303
304static void
305brw_client_done_rpc (sfw_test_unit_t *tsu, srpc_client_rpc_t *rpc)
306{
307 __u64 magic = BRW_MAGIC;
308 sfw_test_instance_t *tsi = tsu->tsu_instance;
309 sfw_session_t *sn = tsi->tsi_batch->bat_session;
310 srpc_msg_t *msg = &rpc->crpc_replymsg;
311 srpc_brw_reply_t *reply = &msg->msg_body.brw_reply;
312 srpc_brw_reqst_t *reqst = &rpc->crpc_reqstmsg.msg_body.brw_reqst;
313
314 LASSERT (sn != NULL);
315
316 if (rpc->crpc_status != 0) {
317 CERROR ("BRW RPC to %s failed with %d\n",
318 libcfs_id2str(rpc->crpc_dest), rpc->crpc_status);
319 if (!tsi->tsi_stopping)
320 atomic_inc(&sn->sn_brw_errors);
321 goto out;
322 }
323
324 if (msg->msg_magic != SRPC_MSG_MAGIC) {
325 __swab64s(&magic);
326 __swab32s(&reply->brw_status);
327 }
328
329 CDEBUG (reply->brw_status ? D_WARNING : D_NET,
330 "BRW RPC to %s finished with brw_status: %d\n",
331 libcfs_id2str(rpc->crpc_dest), reply->brw_status);
332
333 if (reply->brw_status != 0) {
334 atomic_inc(&sn->sn_brw_errors);
335 rpc->crpc_status = -(int)reply->brw_status;
336 goto out;
337 }
338
339 if (reqst->brw_rw == LST_BRW_WRITE) goto out;
340
341 if (brw_check_bulk(&rpc->crpc_bulk, reqst->brw_flags, magic) != 0) {
342 CERROR ("Bulk data from %s is corrupted!\n",
343 libcfs_id2str(rpc->crpc_dest));
344 atomic_inc(&sn->sn_brw_errors);
345 rpc->crpc_status = -EBADMSG;
346 }
347
348out:
349 return;
350}
351
352void
353brw_server_rpc_done (srpc_server_rpc_t *rpc)
354{
355 srpc_bulk_t *blk = rpc->srpc_bulk;
356
357 if (blk == NULL) return;
358
359 if (rpc->srpc_status != 0)
360 CERROR ("Bulk transfer %s %s has failed: %d\n",
361 blk->bk_sink ? "from" : "to",
362 libcfs_id2str(rpc->srpc_peer), rpc->srpc_status);
363 else
364 CDEBUG (D_NET, "Transferred %d pages bulk data %s %s\n",
365 blk->bk_niov, blk->bk_sink ? "from" : "to",
366 libcfs_id2str(rpc->srpc_peer));
367
368 sfw_free_pages(rpc);
369}
370
371int
372brw_bulk_ready (srpc_server_rpc_t *rpc, int status)
373{
374 __u64 magic = BRW_MAGIC;
375 srpc_brw_reply_t *reply = &rpc->srpc_replymsg.msg_body.brw_reply;
376 srpc_brw_reqst_t *reqst;
377 srpc_msg_t *reqstmsg;
378
379 LASSERT (rpc->srpc_bulk != NULL);
380 LASSERT (rpc->srpc_reqstbuf != NULL);
381
382 reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
383 reqst = &reqstmsg->msg_body.brw_reqst;
384
385 if (status != 0) {
386 CERROR ("BRW bulk %s failed for RPC from %s: %d\n",
387 reqst->brw_rw == LST_BRW_READ ? "READ" : "WRITE",
388 libcfs_id2str(rpc->srpc_peer), status);
389 return -EIO;
390 }
391
392 if (reqst->brw_rw == LST_BRW_READ)
393 return 0;
394
395 if (reqstmsg->msg_magic != SRPC_MSG_MAGIC)
396 __swab64s(&magic);
397
398 if (brw_check_bulk(rpc->srpc_bulk, reqst->brw_flags, magic) != 0) {
399 CERROR ("Bulk data from %s is corrupted!\n",
400 libcfs_id2str(rpc->srpc_peer));
401 reply->brw_status = EBADMSG;
402 }
403
404 return 0;
405}
406
407int
408brw_server_handle(struct srpc_server_rpc *rpc)
409{
410 struct srpc_service *sv = rpc->srpc_scd->scd_svc;
411 srpc_msg_t *replymsg = &rpc->srpc_replymsg;
412 srpc_msg_t *reqstmsg = &rpc->srpc_reqstbuf->buf_msg;
413 srpc_brw_reply_t *reply = &replymsg->msg_body.brw_reply;
414 srpc_brw_reqst_t *reqst = &reqstmsg->msg_body.brw_reqst;
415 int npg;
416 int rc;
417
418 LASSERT (sv->sv_id == SRPC_SERVICE_BRW);
419
420 if (reqstmsg->msg_magic != SRPC_MSG_MAGIC) {
421 LASSERT (reqstmsg->msg_magic == __swab32(SRPC_MSG_MAGIC));
422
423 __swab32s(&reqst->brw_rw);
424 __swab32s(&reqst->brw_len);
425 __swab32s(&reqst->brw_flags);
426 __swab64s(&reqst->brw_rpyid);
427 __swab64s(&reqst->brw_bulkid);
428 }
429 LASSERT (reqstmsg->msg_type == (__u32)srpc_service2request(sv->sv_id));
430
431 reply->brw_status = 0;
432 rpc->srpc_done = brw_server_rpc_done;
433
434 if ((reqst->brw_rw != LST_BRW_READ && reqst->brw_rw != LST_BRW_WRITE) ||
435 (reqst->brw_flags != LST_BRW_CHECK_NONE &&
436 reqst->brw_flags != LST_BRW_CHECK_FULL &&
437 reqst->brw_flags != LST_BRW_CHECK_SIMPLE)) {
438 reply->brw_status = EINVAL;
439 return 0;
440 }
441
442 if ((reqstmsg->msg_ses_feats & ~LST_FEATS_MASK) != 0) {
443 replymsg->msg_ses_feats = LST_FEATS_MASK;
444 reply->brw_status = EPROTO;
445 return 0;
446 }
447
448 if ((reqstmsg->msg_ses_feats & LST_FEAT_BULK_LEN) == 0) {
449
450 if ((reqst->brw_len & ~CFS_PAGE_MASK) != 0) {
451 reply->brw_status = EINVAL;
452 return 0;
453 }
454 npg = reqst->brw_len >> PAGE_CACHE_SHIFT;
455
456 } else {
457 npg = (reqst->brw_len + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
458 }
459
460 replymsg->msg_ses_feats = reqstmsg->msg_ses_feats;
461
462 if (reqst->brw_len == 0 || npg > LNET_MAX_IOV) {
463 reply->brw_status = EINVAL;
464 return 0;
465 }
466
467 rc = sfw_alloc_pages(rpc, rpc->srpc_scd->scd_cpt, npg,
468 reqst->brw_len,
469 reqst->brw_rw == LST_BRW_WRITE);
470 if (rc != 0)
471 return rc;
472
473 if (reqst->brw_rw == LST_BRW_READ)
474 brw_fill_bulk(rpc->srpc_bulk, reqst->brw_flags, BRW_MAGIC);
475 else
476 brw_fill_bulk(rpc->srpc_bulk, reqst->brw_flags, BRW_POISON);
477
478 return 0;
479}
480
481sfw_test_client_ops_t brw_test_client;
482void brw_init_test_client(void)
483{
484 brw_test_client.tso_init = brw_client_init;
485 brw_test_client.tso_fini = brw_client_fini;
486 brw_test_client.tso_prep_rpc = brw_client_prep_rpc;
487 brw_test_client.tso_done_rpc = brw_client_done_rpc;
488};
489
490srpc_service_t brw_test_service;
491void brw_init_test_service(void)
492{
493
494 brw_test_service.sv_id = SRPC_SERVICE_BRW;
495 brw_test_service.sv_name = "brw_test";
496 brw_test_service.sv_handler = brw_server_handle;
497 brw_test_service.sv_bulk_ready = brw_bulk_ready;
498 brw_test_service.sv_wi_total = brw_srv_workitems;
499}
500
