drivers/raw/ioat/ioat_rawdev_test.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2019 Intel Corporation
   3  */
   4
   5 #include <unistd.h>
   6 #include <inttypes.h>
   7 #include <rte_mbuf.h>
   8 #include "rte_rawdev.h"
   9 #include "rte_ioat_rawdev.h"
  10 #include "ioat_private.h"
  11
  12 #define MAX_SUPPORTED_RAWDEVS 64
  13 #define TEST_SKIPPED 77
  14 #define COPY_LEN 1024
  15
  16 int ioat_rawdev_test(uint16_t dev_id); /* pre-define to keep compiler happy */
  17
  18 static struct rte_mempool *pool;
  19 static unsigned short expected_ring_size[MAX_SUPPORTED_RAWDEVS];
  20
  21 #define PRINT_ERR(...) print_err(__func__, __LINE__, __VA_ARGS__)
  22
  23 static inline int
  24 __rte_format_printf(3, 4)
  25 print_err(const char *func, int lineno, const char *format, ...)
  26 {
  27         va_list ap;
  28         int ret;
  29
  30         ret = fprintf(stderr, "In %s:%d - ", func, lineno);
  31         va_start(ap, format);
  32         ret += vfprintf(stderr, format, ap);
  33         va_end(ap);
  34
  35         return ret;
  36 }
  37
  38 static int
  39 do_multi_copies(int dev_id, int split_batches, int split_completions)
  40 {
  41         struct rte_mbuf *srcs[32], *dsts[32];
  42         struct rte_mbuf *completed_src[64];
  43         struct rte_mbuf *completed_dst[64];
  44         unsigned int i, j;
  45
  46         for (i = 0; i < RTE_DIM(srcs); i++) {
  47                 char *src_data;
  48
  49                 if (split_batches && i == RTE_DIM(srcs) / 2)
  50                         rte_ioat_perform_ops(dev_id);
  51
  52                 srcs[i] = rte_pktmbuf_alloc(pool);
  53                 dsts[i] = rte_pktmbuf_alloc(pool);
  54                 src_data = rte_pktmbuf_mtod(srcs[i], char *);
  55
  56                 for (j = 0; j < COPY_LEN; j++)
  57                         src_data[j] = rand() & 0xFF;
  58
  59                 if (rte_ioat_enqueue_copy(dev_id,
  60                                 srcs[i]->buf_iova + srcs[i]->data_off,
  61                                 dsts[i]->buf_iova + dsts[i]->data_off,
  62                                 COPY_LEN,
  63                                 (uintptr_t)srcs[i],
  64                                 (uintptr_t)dsts[i]) != 1) {
  65                         PRINT_ERR("Error with rte_ioat_enqueue_copy for buffer %u\n",
  66                                         i);
  67                         return -1;
  68                 }
  69         }
  70         rte_ioat_perform_ops(dev_id);
  71         usleep(100);
  72
  73         if (split_completions) {
  74                 /* gather completions in two halves */
  75                 uint16_t half_len = RTE_DIM(srcs) / 2;
  76                 if (rte_ioat_completed_ops(dev_id, half_len, (void *)completed_src,
  77                                 (void *)completed_dst) != half_len) {
  78                         PRINT_ERR("Error with rte_ioat_completed_ops - first half request\n");
  79                         rte_rawdev_dump(dev_id, stdout);
  80                         return -1;
  81                 }
  82                 if (rte_ioat_completed_ops(dev_id, half_len, (void *)&completed_src[half_len],
  83                                 (void *)&completed_dst[half_len]) != half_len) {
  84                         PRINT_ERR("Error with rte_ioat_completed_ops - second half request\n");
  85                         rte_rawdev_dump(dev_id, stdout);
  86                         return -1;
  87                 }
  88         } else {
  89                 /* gather all completions in one go */
  90                 if (rte_ioat_completed_ops(dev_id, 64, (void *)completed_src,
  91                                 (void *)completed_dst) != RTE_DIM(srcs)) {
  92                         PRINT_ERR("Error with rte_ioat_completed_ops\n");
  93                         rte_rawdev_dump(dev_id, stdout);
  94                         return -1;
  95                 }
  96         }
  97         for (i = 0; i < RTE_DIM(srcs); i++) {
  98                 char *src_data, *dst_data;
  99
 100                 if (completed_src[i] != srcs[i]) {
 101                         PRINT_ERR("Error with source pointer %u\n", i);
 102                         return -1;
 103                 }
 104                 if (completed_dst[i] != dsts[i]) {
 105                         PRINT_ERR("Error with dest pointer %u\n", i);
 106                         return -1;
 107                 }
 108
 109                 src_data = rte_pktmbuf_mtod(srcs[i], char *);
 110                 dst_data = rte_pktmbuf_mtod(dsts[i], char *);
 111                 for (j = 0; j < COPY_LEN; j++)
 112                         if (src_data[j] != dst_data[j]) {
 113                                 PRINT_ERR("Error with copy of packet %u, byte %u\n",
 114                                                 i, j);
 115                                 return -1;
 116                         }
 117                 rte_pktmbuf_free(srcs[i]);
 118                 rte_pktmbuf_free(dsts[i]);
 119         }
 120         return 0;
 121 }
 122
 123 static int
 124 test_enqueue_copies(int dev_id)
 125 {
 126         unsigned int i;
 127
 128         /* test doing a single copy */
 129         do {
 130                 struct rte_mbuf *src, *dst;
 131                 char *src_data, *dst_data;
 132                 struct rte_mbuf *completed[2] = {0};
 133
 134                 src = rte_pktmbuf_alloc(pool);
 135                 dst = rte_pktmbuf_alloc(pool);
 136                 src_data = rte_pktmbuf_mtod(src, char *);
 137                 dst_data = rte_pktmbuf_mtod(dst, char *);
 138
 139                 for (i = 0; i < COPY_LEN; i++)
 140                         src_data[i] = rand() & 0xFF;
 141
 142                 if (rte_ioat_enqueue_copy(dev_id,
 143                                 src->buf_iova + src->data_off,
 144                                 dst->buf_iova + dst->data_off,
 145                                 COPY_LEN,
 146                                 (uintptr_t)src,
 147                                 (uintptr_t)dst) != 1) {
 148                         PRINT_ERR("Error with rte_ioat_enqueue_copy\n");
 149                         return -1;
 150                 }
 151                 rte_ioat_perform_ops(dev_id);
 152                 usleep(10);
 153
 154                 if (rte_ioat_completed_ops(dev_id, 1, (void *)&completed[0],
 155                                 (void *)&completed[1]) != 1) {
 156                         PRINT_ERR("Error with rte_ioat_completed_ops\n");
 157                         return -1;
 158                 }
 159                 if (completed[0] != src || completed[1] != dst) {
 160                         PRINT_ERR("Error with completions: got (%p, %p), not (%p,%p)\n",
 161                                         completed[0], completed[1], src, dst);
 162                         return -1;
 163                 }
 164
 165                 for (i = 0; i < COPY_LEN; i++)
 166                         if (dst_data[i] != src_data[i]) {
 167                                 PRINT_ERR("Data mismatch at char %u [Got %02x not %02x]\n",
 168                                                 i, dst_data[i], src_data[i]);
 169                                 return -1;
 170                         }
 171                 rte_pktmbuf_free(src);
 172                 rte_pktmbuf_free(dst);
 173         } while (0);
 174
 175         /* test doing a multiple single copies */
 176         do {
 177                 const uint16_t max_ops = 4;
 178                 struct rte_mbuf *src, *dst;
 179                 char *src_data, *dst_data;
 180                 struct rte_mbuf *completed[32] = {0};
 181                 const uint16_t max_completions = RTE_DIM(completed) / 2;
 182
 183                 src = rte_pktmbuf_alloc(pool);
 184                 dst = rte_pktmbuf_alloc(pool);
 185                 src_data = rte_pktmbuf_mtod(src, char *);
 186                 dst_data = rte_pktmbuf_mtod(dst, char *);
 187
 188                 for (i = 0; i < COPY_LEN; i++)
 189                         src_data[i] = rand() & 0xFF;
 190
 191                 /* perform the same copy <max_ops> times */
 192                 for (i = 0; i < max_ops; i++) {
 193                         if (rte_ioat_enqueue_copy(dev_id,
 194                                         src->buf_iova + src->data_off,
 195                                         dst->buf_iova + dst->data_off,
 196                                         COPY_LEN,
 197                                         (uintptr_t)src,
 198                                         (uintptr_t)dst) != 1) {
 199                                 PRINT_ERR("Error with rte_ioat_enqueue_copy\n");
 200                                 return -1;
 201                         }
 202                         rte_ioat_perform_ops(dev_id);
 203                 }
 204                 usleep(10);
 205
 206                 if (rte_ioat_completed_ops(dev_id, max_completions, (void *)&completed[0],
 207                                 (void *)&completed[max_completions]) != max_ops) {
 208                         PRINT_ERR("Error with rte_ioat_completed_ops\n");
 209                         return -1;
 210                 }
 211                 if (completed[0] != src || completed[max_completions] != dst) {
 212                         PRINT_ERR("Error with completions: got (%p, %p), not (%p,%p)\n",
 213                                         completed[0], completed[max_completions], src, dst);
 214                         return -1;
 215                 }
 216
 217                 for (i = 0; i < COPY_LEN; i++)
 218                         if (dst_data[i] != src_data[i]) {
 219                                 PRINT_ERR("Data mismatch at char %u\n", i);
 220                                 return -1;
 221                         }
 222                 rte_pktmbuf_free(src);
 223                 rte_pktmbuf_free(dst);
 224         } while (0);
 225
 226         /* test doing multiple copies */
 227         do_multi_copies(dev_id, 0, 0); /* enqueue and complete one batch at a time */
 228         do_multi_copies(dev_id, 1, 0); /* enqueue 2 batches and then complete both */
 229         do_multi_copies(dev_id, 0, 1); /* enqueue 1 batch, then complete in two halves */
 230         return 0;
 231 }
 232
 233 static int
 234 test_enqueue_fill(int dev_id)
 235 {
 236         const unsigned int lengths[] = {8, 64, 1024, 50, 100, 89};
 237         struct rte_mbuf *dst = rte_pktmbuf_alloc(pool);
 238         char *dst_data = rte_pktmbuf_mtod(dst, char *);
 239         struct rte_mbuf *completed[2] = {0};
 240         uint64_t pattern = 0xfedcba9876543210;
 241         unsigned int i, j;
 242
 243         for (i = 0; i < RTE_DIM(lengths); i++) {
 244                 /* reset dst_data */
 245                 memset(dst_data, 0, lengths[i]);
 246
 247                 /* perform the fill operation */
 248                 if (rte_ioat_enqueue_fill(dev_id, pattern,
 249                                 dst->buf_iova + dst->data_off, lengths[i],
 250                                 (uintptr_t)dst) != 1) {
 251                         PRINT_ERR("Error with rte_ioat_enqueue_fill\n");
 252                         return -1;
 253                 }
 254
 255                 rte_ioat_perform_ops(dev_id);
 256                 usleep(100);
 257
 258                 if (rte_ioat_completed_ops(dev_id, 1, (void *)&completed[0],
 259                         (void *)&completed[1]) != 1) {
 260                         PRINT_ERR("Error with completed ops\n");
 261                         return -1;
 262                 }
 263                 /* check the result */
 264                 for (j = 0; j < lengths[i]; j++) {
 265                         char pat_byte = ((char *)&pattern)[j % 8];
 266                         if (dst_data[j] != pat_byte) {
 267                                 PRINT_ERR("Error with fill operation (lengths = %u): got (%x), not (%x)\n",
 268                                                 lengths[i], dst_data[j],
 269                                                 pat_byte);
 270                                 return -1;
 271                         }
 272                 }
 273         }
 274
 275         rte_pktmbuf_free(dst);
 276         return 0;
 277 }
 278
 279 int
 280 ioat_rawdev_test(uint16_t dev_id)
 281 {
 282 #define IOAT_TEST_RINGSIZE 512
 283         struct rte_ioat_rawdev_config p = { .ring_size = -1 };
 284         struct rte_rawdev_info info = { .dev_private = &p };
 285         struct rte_rawdev_xstats_name *snames = NULL;
 286         uint64_t *stats = NULL;
 287         unsigned int *ids = NULL;
 288         unsigned int nb_xstats;
 289         unsigned int i;
 290
 291         if (dev_id >= MAX_SUPPORTED_RAWDEVS) {
 292                 printf("Skipping test. Cannot test rawdevs with id's greater than %d\n",
 293                                 MAX_SUPPORTED_RAWDEVS);
 294                 return TEST_SKIPPED;
 295         }
 296
 297         rte_rawdev_info_get(dev_id, &info, sizeof(p));
 298         if (p.ring_size != expected_ring_size[dev_id]) {
 299                 PRINT_ERR("Error, initial ring size is not as expected (Actual: %d, Expected: %d)\n",
 300                                 (int)p.ring_size, expected_ring_size[dev_id]);
 301                 return -1;
 302         }
 303
 304         p.ring_size = IOAT_TEST_RINGSIZE;
 305         if (rte_rawdev_configure(dev_id, &info, sizeof(p)) != 0) {
 306                 PRINT_ERR("Error with rte_rawdev_configure()\n");
 307                 return -1;
 308         }
 309         rte_rawdev_info_get(dev_id, &info, sizeof(p));
 310         if (p.ring_size != IOAT_TEST_RINGSIZE) {
 311                 PRINT_ERR("Error, ring size is not %d (%d)\n",
 312                                 IOAT_TEST_RINGSIZE, (int)p.ring_size);
 313                 return -1;
 314         }
 315         expected_ring_size[dev_id] = p.ring_size;
 316
 317         if (rte_rawdev_start(dev_id) != 0) {
 318                 PRINT_ERR("Error with rte_rawdev_start()\n");
 319                 return -1;
 320         }
 321
 322         pool = rte_pktmbuf_pool_create("TEST_IOAT_POOL",
 323                         256, /* n == num elements */
 324                         32,  /* cache size */
 325                         0,   /* priv size */
 326                         2048, /* data room size */
 327                         info.socket_id);
 328         if (pool == NULL) {
 329                 PRINT_ERR("Error with mempool creation\n");
 330                 return -1;
 331         }
 332
 333         /* allocate memory for xstats names and values */
 334         nb_xstats = rte_rawdev_xstats_names_get(dev_id, NULL, 0);
 335
 336         snames = malloc(sizeof(*snames) * nb_xstats);
 337         if (snames == NULL) {
 338                 PRINT_ERR("Error allocating xstat names memory\n");
 339                 goto err;
 340         }
 341         rte_rawdev_xstats_names_get(dev_id, snames, nb_xstats);
 342
 343         ids = malloc(sizeof(*ids) * nb_xstats);
 344         if (ids == NULL) {
 345                 PRINT_ERR("Error allocating xstat ids memory\n");
 346                 goto err;
 347         }
 348         for (i = 0; i < nb_xstats; i++)
 349                 ids[i] = i;
 350
 351         stats = malloc(sizeof(*stats) * nb_xstats);
 352         if (stats == NULL) {
 353                 PRINT_ERR("Error allocating xstat memory\n");
 354                 goto err;
 355         }
 356
 357         /* run the test cases */
 358         printf("Running Copy Tests\n");
 359         for (i = 0; i < 100; i++) {
 360                 unsigned int j;
 361
 362                 if (test_enqueue_copies(dev_id) != 0)
 363                         goto err;
 364
 365                 rte_rawdev_xstats_get(dev_id, ids, stats, nb_xstats);
 366                 for (j = 0; j < nb_xstats; j++)
 367                         printf("%s: %"PRIu64"   ", snames[j].name, stats[j]);
 368                 printf("\r");
 369         }
 370         printf("\n");
 371
 372         /* test enqueue fill operation */
 373         printf("Running Fill Tests\n");
 374         for (i = 0; i < 100; i++) {
 375                 unsigned int j;
 376
 377                 if (test_enqueue_fill(dev_id) != 0)
 378                         goto err;
 379
 380                 rte_rawdev_xstats_get(dev_id, ids, stats, nb_xstats);
 381                 for (j = 0; j < nb_xstats; j++)
 382                         printf("%s: %"PRIu64"   ", snames[j].name, stats[j]);
 383                 printf("\r");
 384         }
 385         printf("\n");
 386
 387         rte_rawdev_stop(dev_id);
 388         if (rte_rawdev_xstats_reset(dev_id, NULL, 0) != 0) {
 389                 PRINT_ERR("Error resetting xstat values\n");
 390                 goto err;
 391         }
 392
 393         rte_mempool_free(pool);
 394         free(snames);
 395         free(stats);
 396         free(ids);
 397         return 0;
 398
 399 err:
 400         rte_rawdev_stop(dev_id);
 401         rte_rawdev_xstats_reset(dev_id, NULL, 0);
 402         rte_mempool_free(pool);
 403         free(snames);
 404         free(stats);
 405         free(ids);
 406         return -1;
 407 }