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                         rte_rawdev_dump(dev_id, stdout);
 210                         return -1;
 211                 }
 212                 if (completed[0] != src || completed[max_completions] != dst) {
 213                         PRINT_ERR("Error with completions: got (%p, %p), not (%p,%p)\n",
 214                                         completed[0], completed[max_completions], src, dst);
 215                         return -1;
 216                 }
 217
 218                 for (i = 0; i < COPY_LEN; i++)
 219                         if (dst_data[i] != src_data[i]) {
 220                                 PRINT_ERR("Data mismatch at char %u\n", i);
 221                                 return -1;
 222                         }
 223                 rte_pktmbuf_free(src);
 224                 rte_pktmbuf_free(dst);
 225         } while (0);
 226
 227         /* test doing multiple copies */
 228         do_multi_copies(dev_id, 0, 0); /* enqueue and complete one batch at a time */
 229         do_multi_copies(dev_id, 1, 0); /* enqueue 2 batches and then complete both */
 230         do_multi_copies(dev_id, 0, 1); /* enqueue 1 batch, then complete in two halves */
 231         return 0;
 232 }
 233
 234 static int
 235 test_enqueue_fill(int dev_id)
 236 {
 237         const unsigned int lengths[] = {8, 64, 1024, 50, 100, 89};
 238         struct rte_mbuf *dst = rte_pktmbuf_alloc(pool);
 239         char *dst_data = rte_pktmbuf_mtod(dst, char *);
 240         struct rte_mbuf *completed[2] = {0};
 241         uint64_t pattern = 0xfedcba9876543210;
 242         unsigned int i, j;
 243
 244         for (i = 0; i < RTE_DIM(lengths); i++) {
 245                 /* reset dst_data */
 246                 memset(dst_data, 0, lengths[i]);
 247
 248                 /* perform the fill operation */
 249                 if (rte_ioat_enqueue_fill(dev_id, pattern,
 250                                 dst->buf_iova + dst->data_off, lengths[i],
 251                                 (uintptr_t)dst) != 1) {
 252                         PRINT_ERR("Error with rte_ioat_enqueue_fill\n");
 253                         return -1;
 254                 }
 255
 256                 rte_ioat_perform_ops(dev_id);
 257                 usleep(100);
 258
 259                 if (rte_ioat_completed_ops(dev_id, 1, (void *)&completed[0],
 260                         (void *)&completed[1]) != 1) {
 261                         PRINT_ERR("Error with completed ops\n");
 262                         return -1;
 263                 }
 264                 /* check the result */
 265                 for (j = 0; j < lengths[i]; j++) {
 266                         char pat_byte = ((char *)&pattern)[j % 8];
 267                         if (dst_data[j] != pat_byte) {
 268                                 PRINT_ERR("Error with fill operation (lengths = %u): got (%x), not (%x)\n",
 269                                                 lengths[i], dst_data[j],
 270                                                 pat_byte);
 271                                 return -1;
 272                         }
 273                 }
 274         }
 275
 276         rte_pktmbuf_free(dst);
 277         return 0;
 278 }
 279
 280 int
 281 ioat_rawdev_test(uint16_t dev_id)
 282 {
 283 #define IOAT_TEST_RINGSIZE 512
 284         struct rte_ioat_rawdev_config p = { .ring_size = -1 };
 285         struct rte_rawdev_info info = { .dev_private = &p };
 286         struct rte_rawdev_xstats_name *snames = NULL;
 287         uint64_t *stats = NULL;
 288         unsigned int *ids = NULL;
 289         unsigned int nb_xstats;
 290         unsigned int i;
 291
 292         if (dev_id >= MAX_SUPPORTED_RAWDEVS) {
 293                 printf("Skipping test. Cannot test rawdevs with id's greater than %d\n",
 294                                 MAX_SUPPORTED_RAWDEVS);
 295                 return TEST_SKIPPED;
 296         }
 297
 298         rte_rawdev_info_get(dev_id, &info, sizeof(p));
 299         if (p.ring_size != expected_ring_size[dev_id]) {
 300                 PRINT_ERR("Error, initial ring size is not as expected (Actual: %d, Expected: %d)\n",
 301                                 (int)p.ring_size, expected_ring_size[dev_id]);
 302                 return -1;
 303         }
 304
 305         p.ring_size = IOAT_TEST_RINGSIZE;
 306         if (rte_rawdev_configure(dev_id, &info, sizeof(p)) != 0) {
 307                 PRINT_ERR("Error with rte_rawdev_configure()\n");
 308                 return -1;
 309         }
 310         rte_rawdev_info_get(dev_id, &info, sizeof(p));
 311         if (p.ring_size != IOAT_TEST_RINGSIZE) {
 312                 PRINT_ERR("Error, ring size is not %d (%d)\n",
 313                                 IOAT_TEST_RINGSIZE, (int)p.ring_size);
 314                 return -1;
 315         }
 316         expected_ring_size[dev_id] = p.ring_size;
 317
 318         if (rte_rawdev_start(dev_id) != 0) {
 319                 PRINT_ERR("Error with rte_rawdev_start()\n");
 320                 return -1;
 321         }
 322
 323         pool = rte_pktmbuf_pool_create("TEST_IOAT_POOL",
 324                         256, /* n == num elements */
 325                         32,  /* cache size */
 326                         0,   /* priv size */
 327                         2048, /* data room size */
 328                         info.socket_id);
 329         if (pool == NULL) {
 330                 PRINT_ERR("Error with mempool creation\n");
 331                 return -1;
 332         }
 333
 334         /* allocate memory for xstats names and values */
 335         nb_xstats = rte_rawdev_xstats_names_get(dev_id, NULL, 0);
 336
 337         snames = malloc(sizeof(*snames) * nb_xstats);
 338         if (snames == NULL) {
 339                 PRINT_ERR("Error allocating xstat names memory\n");
 340                 goto err;
 341         }
 342         rte_rawdev_xstats_names_get(dev_id, snames, nb_xstats);
 343
 344         ids = malloc(sizeof(*ids) * nb_xstats);
 345         if (ids == NULL) {
 346                 PRINT_ERR("Error allocating xstat ids memory\n");
 347                 goto err;
 348         }
 349         for (i = 0; i < nb_xstats; i++)
 350                 ids[i] = i;
 351
 352         stats = malloc(sizeof(*stats) * nb_xstats);
 353         if (stats == NULL) {
 354                 PRINT_ERR("Error allocating xstat memory\n");
 355                 goto err;
 356         }
 357
 358         /* run the test cases */
 359         printf("Running Copy Tests\n");
 360         for (i = 0; i < 100; i++) {
 361                 unsigned int j;
 362
 363                 if (test_enqueue_copies(dev_id) != 0)
 364                         goto err;
 365
 366                 rte_rawdev_xstats_get(dev_id, ids, stats, nb_xstats);
 367                 for (j = 0; j < nb_xstats; j++)
 368                         printf("%s: %"PRIu64"   ", snames[j].name, stats[j]);
 369                 printf("\r");
 370         }
 371         printf("\n");
 372
 373         /* test enqueue fill operation */
 374         printf("Running Fill Tests\n");
 375         for (i = 0; i < 100; i++) {
 376                 unsigned int j;
 377
 378                 if (test_enqueue_fill(dev_id) != 0)
 379                         goto err;
 380
 381                 rte_rawdev_xstats_get(dev_id, ids, stats, nb_xstats);
 382                 for (j = 0; j < nb_xstats; j++)
 383                         printf("%s: %"PRIu64"   ", snames[j].name, stats[j]);
 384                 printf("\r");
 385         }
 386         printf("\n");
 387
 388         rte_rawdev_stop(dev_id);
 389         if (rte_rawdev_xstats_reset(dev_id, NULL, 0) != 0) {
 390                 PRINT_ERR("Error resetting xstat values\n");
 391                 goto err;
 392         }
 393
 394         rte_mempool_free(pool);
 395         free(snames);
 396         free(stats);
 397         free(ids);
 398         return 0;
 399
 400 err:
 401         rte_rawdev_stop(dev_id);
 402         rte_rawdev_xstats_reset(dev_id, NULL, 0);
 403         rte_mempool_free(pool);
 404         free(snames);
 405         free(stats);
 406         free(ids);
 407         return -1;
 408 }