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
  11 #define MAX_SUPPORTED_RAWDEVS 64
  12 #define TEST_SKIPPED 77
  13
  14 int ioat_rawdev_test(uint16_t dev_id); /* pre-define to keep compiler happy */
  15
  16 static struct rte_mempool *pool;
  17 static unsigned short expected_ring_size[MAX_SUPPORTED_RAWDEVS];
  18
  19 #define PRINT_ERR(...) print_err(__func__, __LINE__, __VA_ARGS__)
  20
  21 static inline int
  22 __rte_format_printf(3, 4)
  23 print_err(const char *func, int lineno, const char *format, ...)
  24 {
  25         va_list ap;
  26         int ret;
  27
  28         ret = fprintf(stderr, "In %s:%d - ", func, lineno);
  29         va_start(ap, format);
  30         ret += vfprintf(stderr, format, ap);
  31         va_end(ap);
  32
  33         return ret;
  34 }
  35
  36 static int
  37 test_enqueue_copies(int dev_id)
  38 {
  39         const unsigned int length = 1024;
  40         unsigned int i;
  41
  42         do {
  43                 struct rte_mbuf *src, *dst;
  44                 char *src_data, *dst_data;
  45                 struct rte_mbuf *completed[2] = {0};
  46
  47                 /* test doing a single copy */
  48                 src = rte_pktmbuf_alloc(pool);
  49                 dst = rte_pktmbuf_alloc(pool);
  50                 src->data_len = src->pkt_len = length;
  51                 dst->data_len = dst->pkt_len = length;
  52                 src_data = rte_pktmbuf_mtod(src, char *);
  53                 dst_data = rte_pktmbuf_mtod(dst, char *);
  54
  55                 for (i = 0; i < length; i++)
  56                         src_data[i] = rand() & 0xFF;
  57
  58                 if (rte_ioat_enqueue_copy(dev_id,
  59                                 src->buf_iova + src->data_off,
  60                                 dst->buf_iova + dst->data_off,
  61                                 length,
  62                                 (uintptr_t)src,
  63                                 (uintptr_t)dst,
  64                                 0 /* no fence */) != 1) {
  65                         PRINT_ERR("Error with rte_ioat_enqueue_copy\n");
  66                         return -1;
  67                 }
  68                 rte_ioat_do_copies(dev_id);
  69                 usleep(10);
  70
  71                 if (rte_ioat_completed_copies(dev_id, 1, (void *)&completed[0],
  72                                 (void *)&completed[1]) != 1) {
  73                         PRINT_ERR("Error with rte_ioat_completed_copies\n");
  74                         return -1;
  75                 }
  76                 if (completed[0] != src || completed[1] != dst) {
  77                         PRINT_ERR("Error with completions: got (%p, %p), not (%p,%p)\n",
  78                                         completed[0], completed[1], src, dst);
  79                         return -1;
  80                 }
  81
  82                 for (i = 0; i < length; i++)
  83                         if (dst_data[i] != src_data[i]) {
  84                                 PRINT_ERR("Data mismatch at char %u\n", i);
  85                                 return -1;
  86                         }
  87                 rte_pktmbuf_free(src);
  88                 rte_pktmbuf_free(dst);
  89         } while (0);
  90
  91         /* test doing multiple copies */
  92         do {
  93                 struct rte_mbuf *srcs[32], *dsts[32];
  94                 struct rte_mbuf *completed_src[64];
  95                 struct rte_mbuf *completed_dst[64];
  96                 unsigned int j;
  97
  98                 for (i = 0; i < RTE_DIM(srcs); i++) {
  99                         char *src_data;
 100
 101                         srcs[i] = rte_pktmbuf_alloc(pool);
 102                         dsts[i] = rte_pktmbuf_alloc(pool);
 103                         srcs[i]->data_len = srcs[i]->pkt_len = length;
 104                         dsts[i]->data_len = dsts[i]->pkt_len = length;
 105                         src_data = rte_pktmbuf_mtod(srcs[i], char *);
 106
 107                         for (j = 0; j < length; j++)
 108                                 src_data[j] = rand() & 0xFF;
 109
 110                         if (rte_ioat_enqueue_copy(dev_id,
 111                                         srcs[i]->buf_iova + srcs[i]->data_off,
 112                                         dsts[i]->buf_iova + dsts[i]->data_off,
 113                                         length,
 114                                         (uintptr_t)srcs[i],
 115                                         (uintptr_t)dsts[i],
 116                                         0 /* nofence */) != 1) {
 117                                 PRINT_ERR("Error with rte_ioat_enqueue_copy for buffer %u\n",
 118                                                 i);
 119                                 return -1;
 120                         }
 121                 }
 122                 rte_ioat_do_copies(dev_id);
 123                 usleep(100);
 124
 125                 if (rte_ioat_completed_copies(dev_id, 64, (void *)completed_src,
 126                                 (void *)completed_dst) != RTE_DIM(srcs)) {
 127                         PRINT_ERR("Error with rte_ioat_completed_copies\n");
 128                         return -1;
 129                 }
 130                 for (i = 0; i < RTE_DIM(srcs); i++) {
 131                         char *src_data, *dst_data;
 132
 133                         if (completed_src[i] != srcs[i]) {
 134                                 PRINT_ERR("Error with source pointer %u\n", i);
 135                                 return -1;
 136                         }
 137                         if (completed_dst[i] != dsts[i]) {
 138                                 PRINT_ERR("Error with dest pointer %u\n", i);
 139                                 return -1;
 140                         }
 141
 142                         src_data = rte_pktmbuf_mtod(srcs[i], char *);
 143                         dst_data = rte_pktmbuf_mtod(dsts[i], char *);
 144                         for (j = 0; j < length; j++)
 145                                 if (src_data[j] != dst_data[j]) {
 146                                         PRINT_ERR("Error with copy of packet %u, byte %u\n",
 147                                                         i, j);
 148                                         return -1;
 149                                 }
 150                         rte_pktmbuf_free(srcs[i]);
 151                         rte_pktmbuf_free(dsts[i]);
 152                 }
 153
 154         } while (0);
 155
 156         return 0;
 157 }
 158
 159 int
 160 ioat_rawdev_test(uint16_t dev_id)
 161 {
 162 #define IOAT_TEST_RINGSIZE 512
 163         struct rte_ioat_rawdev_config p = { .ring_size = -1 };
 164         struct rte_rawdev_info info = { .dev_private = &p };
 165         struct rte_rawdev_xstats_name *snames = NULL;
 166         uint64_t *stats = NULL;
 167         unsigned int *ids = NULL;
 168         unsigned int nb_xstats;
 169         unsigned int i;
 170
 171         if (dev_id >= MAX_SUPPORTED_RAWDEVS) {
 172                 printf("Skipping test. Cannot test rawdevs with id's greater than %d\n",
 173                                 MAX_SUPPORTED_RAWDEVS);
 174                 return TEST_SKIPPED;
 175         }
 176
 177         rte_rawdev_info_get(dev_id, &info, sizeof(p));
 178         if (p.ring_size != expected_ring_size[dev_id]) {
 179                 PRINT_ERR("Error, initial ring size is not as expected (Actual: %d, Expected: %d)\n",
 180                                 (int)p.ring_size, expected_ring_size[dev_id]);
 181                 return -1;
 182         }
 183
 184         p.ring_size = IOAT_TEST_RINGSIZE;
 185         if (rte_rawdev_configure(dev_id, &info, sizeof(p)) != 0) {
 186                 PRINT_ERR("Error with rte_rawdev_configure()\n");
 187                 return -1;
 188         }
 189         rte_rawdev_info_get(dev_id, &info, sizeof(p));
 190         if (p.ring_size != IOAT_TEST_RINGSIZE) {
 191                 PRINT_ERR("Error, ring size is not %d (%d)\n",
 192                                 IOAT_TEST_RINGSIZE, (int)p.ring_size);
 193                 return -1;
 194         }
 195         expected_ring_size[dev_id] = p.ring_size;
 196
 197         if (rte_rawdev_start(dev_id) != 0) {
 198                 PRINT_ERR("Error with rte_rawdev_start()\n");
 199                 return -1;
 200         }
 201
 202         pool = rte_pktmbuf_pool_create("TEST_IOAT_POOL",
 203                         256, /* n == num elements */
 204                         32,  /* cache size */
 205                         0,   /* priv size */
 206                         2048, /* data room size */
 207                         info.socket_id);
 208         if (pool == NULL) {
 209                 PRINT_ERR("Error with mempool creation\n");
 210                 return -1;
 211         }
 212
 213         /* allocate memory for xstats names and values */
 214         nb_xstats = rte_rawdev_xstats_names_get(dev_id, NULL, 0);
 215
 216         snames = malloc(sizeof(*snames) * nb_xstats);
 217         if (snames == NULL) {
 218                 PRINT_ERR("Error allocating xstat names memory\n");
 219                 goto err;
 220         }
 221         rte_rawdev_xstats_names_get(dev_id, snames, nb_xstats);
 222
 223         ids = malloc(sizeof(*ids) * nb_xstats);
 224         if (ids == NULL) {
 225                 PRINT_ERR("Error allocating xstat ids memory\n");
 226                 goto err;
 227         }
 228         for (i = 0; i < nb_xstats; i++)
 229                 ids[i] = i;
 230
 231         stats = malloc(sizeof(*stats) * nb_xstats);
 232         if (stats == NULL) {
 233                 PRINT_ERR("Error allocating xstat memory\n");
 234                 goto err;
 235         }
 236
 237         /* run the test cases */
 238         for (i = 0; i < 100; i++) {
 239                 unsigned int j;
 240
 241                 if (test_enqueue_copies(dev_id) != 0)
 242                         goto err;
 243
 244                 rte_rawdev_xstats_get(dev_id, ids, stats, nb_xstats);
 245                 for (j = 0; j < nb_xstats; j++)
 246                         printf("%s: %"PRIu64"   ", snames[j].name, stats[j]);
 247                 printf("\r");
 248         }
 249         printf("\n");
 250
 251         rte_rawdev_stop(dev_id);
 252         if (rte_rawdev_xstats_reset(dev_id, NULL, 0) != 0) {
 253                 PRINT_ERR("Error resetting xstat values\n");
 254                 goto err;
 255         }
 256
 257         rte_mempool_free(pool);
 258         free(snames);
 259         free(stats);
 260         free(ids);
 261         return 0;
 262
 263 err:
 264         rte_rawdev_stop(dev_id);
 265         rte_rawdev_xstats_reset(dev_id, NULL, 0);
 266         rte_mempool_free(pool);
 267         free(snames);
 268         free(stats);
 269         free(ids);
 270         return -1;
 271 }