1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright (c) 2021 NVIDIA Corporation & Affiliates
14 #include <rte_common.h>
15 #include <rte_malloc.h>
16 #include <rte_memory.h>
18 #include <rte_ether.h>
19 #include <rte_ethdev.h>
20 #include <rte_mempool.h>
23 #include <rte_gpudev.h>
31 usage(const char *prog_name)
33 printf("%s [EAL options] --\n",
38 args_parse(int argc, char **argv)
44 static struct option lgopts[] = {
45 { "help", 0, 0, ARG_HELP},
51 while ((opt = getopt_long(argc, argvopt, "",
52 lgopts, &opt_idx)) != EOF) {
59 rte_exit(EXIT_FAILURE, "Invalid option: %s\n", argv[optind]);
66 alloc_gpu_memory(uint16_t gpu_id)
70 size_t buf_bytes = 1024;
71 unsigned int align = 4096;
74 printf("\n=======> TEST: Allocate GPU memory\n\n");
76 /* Alloc memory on GPU 0 without any specific alignment */
77 ptr_1 = rte_gpu_mem_alloc(gpu_id, buf_bytes, 0);
79 fprintf(stderr, "rte_gpu_mem_alloc GPU memory returned error\n");
82 printf("GPU memory allocated at 0x%p size is %zd bytes\n",
85 /* Alloc memory on GPU 0 with 4kB alignment */
86 ptr_2 = rte_gpu_mem_alloc(gpu_id, buf_bytes, align);
88 fprintf(stderr, "rte_gpu_mem_alloc GPU memory returned error\n");
91 printf("GPU memory allocated at 0x%p size is %zd bytes\n",
94 if (((uintptr_t)ptr_2) % align) {
95 fprintf(stderr, "Memory address 0x%p is not aligned to %u\n", ptr_2, align);
99 ret = rte_gpu_mem_free(gpu_id, (uint8_t *)(ptr_1)+0x700);
101 printf("GPU memory 0x%p NOT freed: GPU driver didn't find this memory address internally.\n",
102 (uint8_t *)(ptr_1)+0x700);
104 fprintf(stderr, "ERROR: rte_gpu_mem_free freed GPU memory 0x%p\n",
105 (uint8_t *)(ptr_1)+0x700);
109 ret = rte_gpu_mem_free(gpu_id, ptr_2);
111 fprintf(stderr, "rte_gpu_mem_free returned error %d\n", ret);
114 printf("GPU memory 0x%p freed\n", ptr_2);
116 ret = rte_gpu_mem_free(gpu_id, ptr_1);
118 fprintf(stderr, "rte_gpu_mem_free returned error %d\n", ret);
121 printf("GPU memory 0x%p freed\n", ptr_1);
123 printf("\n=======> TEST: PASSED\n");
128 rte_gpu_mem_free(gpu_id, ptr_1);
129 rte_gpu_mem_free(gpu_id, ptr_2);
131 printf("\n=======> TEST: FAILED\n");
136 register_cpu_memory(uint16_t gpu_id)
139 size_t buf_bytes = 1024;
142 printf("\n=======> TEST: Register CPU memory\n\n");
144 /* Alloc memory on CPU visible from GPU 0 */
145 ptr = rte_zmalloc(NULL, buf_bytes, 0);
147 fprintf(stderr, "Failed to allocate CPU memory.\n");
151 ret = rte_gpu_mem_register(gpu_id, buf_bytes, ptr);
153 fprintf(stderr, "rte_gpu_mem_register CPU memory returned error %d\n", ret);
156 printf("CPU memory registered at 0x%p %zdB\n", ptr, buf_bytes);
158 ret = rte_gpu_mem_unregister(gpu_id, (uint8_t *)(ptr)+0x700);
160 printf("CPU memory 0x%p NOT unregistered: GPU driver didn't find this memory address internally\n",
161 (uint8_t *)(ptr)+0x700);
163 fprintf(stderr, "ERROR: rte_gpu_mem_unregister unregistered GPU memory 0x%p\n",
164 (uint8_t *)(ptr)+0x700);
168 ret = rte_gpu_mem_unregister(gpu_id, ptr);
170 fprintf(stderr, "rte_gpu_mem_unregister returned error %d\n", ret);
173 printf("CPU memory 0x%p unregistered\n", ptr);
177 printf("\n=======> TEST: PASSED\n");
182 rte_gpu_mem_unregister(gpu_id, ptr);
184 printf("\n=======> TEST: FAILED\n");
189 create_update_comm_flag(uint16_t gpu_id)
191 struct rte_gpu_comm_flag devflag;
196 printf("\n=======> TEST: Communication flag\n\n");
198 ret = rte_gpu_comm_create_flag(gpu_id, &devflag, RTE_GPU_COMM_FLAG_CPU);
200 fprintf(stderr, "rte_gpu_comm_create_flag returned error %d\n", ret);
205 ret = rte_gpu_comm_set_flag(&devflag, set_val);
207 fprintf(stderr, "rte_gpu_comm_set_flag returned error %d\n", ret);
211 ret = rte_gpu_comm_get_flag_value(&devflag, &get_val);
213 fprintf(stderr, "rte_gpu_comm_get_flag_value returned error %d\n", ret);
217 printf("Communication flag value at 0x%p was set to %d and current value is %d\n",
218 devflag.ptr, set_val, get_val);
221 ret = rte_gpu_comm_set_flag(&devflag, set_val);
223 fprintf(stderr, "rte_gpu_comm_set_flag returned error %d\n", ret);
227 ret = rte_gpu_comm_get_flag_value(&devflag, &get_val);
229 fprintf(stderr, "rte_gpu_comm_get_flag_value returned error %d\n", ret);
233 printf("Communication flag value at 0x%p was set to %d and current value is %d\n",
234 devflag.ptr, set_val, get_val);
236 ret = rte_gpu_comm_destroy_flag(&devflag);
238 fprintf(stderr, "rte_gpu_comm_destroy_flags returned error %d\n", ret);
242 printf("\n=======> TEST: PASSED\n");
247 rte_gpu_comm_destroy_flag(&devflag);
248 printf("\n=======> TEST: FAILED\n");
253 simulate_gpu_task(struct rte_gpu_comm_list *comm_list_item, int num_pkts)
257 if (comm_list_item == NULL)
260 for (idx = 0; idx < num_pkts; idx++) {
262 * consume(comm_list_item->pkt_list[idx].addr);
265 comm_list_item->status = RTE_GPU_COMM_LIST_DONE;
271 create_update_comm_list(uint16_t gpu_id)
275 struct rte_gpu_comm_list *comm_list = NULL;
276 uint32_t num_comm_items = 1024;
277 struct rte_mbuf *mbufs[10];
279 printf("\n=======> TEST: Communication list\n\n");
281 comm_list = rte_gpu_comm_create_list(gpu_id, num_comm_items);
282 if (comm_list == NULL) {
283 fprintf(stderr, "rte_gpu_comm_create_list returned error %d\n", ret);
288 * Simulate DPDK receive functions like rte_eth_rx_burst()
290 for (i = 0; i < 10; i++) {
291 mbufs[i] = rte_zmalloc(NULL, sizeof(struct rte_mbuf), 0);
292 if (mbufs[i] == NULL) {
293 fprintf(stderr, "Failed to allocate fake mbufs in CPU memory.\n");
297 memset(mbufs[i], 0, sizeof(struct rte_mbuf));
301 * Populate just the first item of the list
303 ret = rte_gpu_comm_populate_list_pkts(&(comm_list[0]), mbufs, 10);
305 fprintf(stderr, "rte_gpu_comm_populate_list_pkts returned error %d\n", ret);
309 ret = rte_gpu_comm_cleanup_list(&(comm_list[0]));
311 fprintf(stderr, "rte_gpu_comm_cleanup_list erroneously cleaned the list even if packets have not been consumed yet\n");
314 printf("Communication list not cleaned because packets have not been consumed yet.\n");
317 * Simulate a GPU tasks going through the packet list to consume
318 * mbufs packets and release them
320 printf("Consuming packets...\n");
321 simulate_gpu_task(&(comm_list[0]), 10);
324 * Packets have been consumed, now the communication item
325 * and the related mbufs can be all released
327 ret = rte_gpu_comm_cleanup_list(&(comm_list[0]));
329 fprintf(stderr, "rte_gpu_comm_cleanup_list returned error %d\n", ret);
333 printf("Communication list cleaned because packets have been consumed now.\n");
335 ret = rte_gpu_comm_destroy_list(comm_list, num_comm_items);
337 fprintf(stderr, "rte_gpu_comm_destroy_list returned error %d\n", ret);
341 for (i = 0; i < 10; i++)
344 printf("\n=======> TEST: PASSED\n");
349 rte_gpu_comm_destroy_list(comm_list, num_comm_items);
350 for (i = 0; i < 10; i++)
352 printf("\n=======> TEST: FAILED\n");
357 main(int argc, char **argv)
362 struct rte_gpu_info ginfo;
365 ret = rte_eal_init(argc, argv);
367 rte_exit(EXIT_FAILURE, "EAL init failed\n");
371 args_parse(argc, argv);
375 nb_gpus = rte_gpu_count_avail();
376 printf("\n\nDPDK found %d GPUs:\n", nb_gpus);
377 RTE_GPU_FOREACH(gpu_id)
379 if (rte_gpu_info_get(gpu_id, &ginfo))
380 rte_exit(EXIT_FAILURE, "rte_gpu_info_get error - bye\n");
382 printf("\tGPU ID %d\n\t\tparent ID %d GPU Bus ID %s NUMA node %d Tot memory %.02f MB, Tot processors %d\n",
387 (((float)ginfo.total_memory)/(float)1024)/(float)1024,
388 ginfo.processor_count
394 fprintf(stderr, "Need at least one GPU on the system to run the example\n");
403 alloc_gpu_memory(gpu_id);
404 register_cpu_memory(gpu_id);
407 * Communication items test
409 create_update_comm_flag(gpu_id);
410 create_update_comm_list(gpu_id);
412 /* clean up the EAL */