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