}
}
+static int
+alloc_gpu_memory(uint16_t gpu_id)
+{
+ void *ptr_1 = NULL;
+ void *ptr_2 = NULL;
+ size_t buf_bytes = 1024;
+ int ret;
+
+ printf("\n=======> TEST: Allocate GPU memory\n\n");
+
+ /* Alloc memory on GPU 0 */
+ ptr_1 = rte_gpu_mem_alloc(gpu_id, buf_bytes);
+ if (ptr_1 == NULL) {
+ fprintf(stderr, "rte_gpu_mem_alloc GPU memory returned error\n");
+ goto error;
+ }
+ printf("GPU memory allocated at 0x%p size is %zd bytes\n",
+ ptr_1, buf_bytes);
+
+ ptr_2 = rte_gpu_mem_alloc(gpu_id, buf_bytes);
+ if (ptr_2 == NULL) {
+ fprintf(stderr, "rte_gpu_mem_alloc GPU memory returned error\n");
+ goto error;
+ }
+ printf("GPU memory allocated at 0x%p size is %zd bytes\n",
+ ptr_2, buf_bytes);
+
+ ret = rte_gpu_mem_free(gpu_id, (uint8_t *)(ptr_1)+0x700);
+ if (ret < 0) {
+ printf("GPU memory 0x%p NOT freed: GPU driver didn't find this memory address internally.\n",
+ (uint8_t *)(ptr_1)+0x700);
+ } else {
+ fprintf(stderr, "ERROR: rte_gpu_mem_free freed GPU memory 0x%p\n",
+ (uint8_t *)(ptr_1)+0x700);
+ goto error;
+ }
+
+ ret = rte_gpu_mem_free(gpu_id, ptr_2);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_mem_free returned error %d\n", ret);
+ goto error;
+ }
+ printf("GPU memory 0x%p freed\n", ptr_2);
+
+ ret = rte_gpu_mem_free(gpu_id, ptr_1);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_mem_free returned error %d\n", ret);
+ goto error;
+ }
+ printf("GPU memory 0x%p freed\n", ptr_1);
+
+ printf("\n=======> TEST: PASSED\n");
+ return 0;
+
+error:
+
+ rte_gpu_mem_free(gpu_id, ptr_1);
+ rte_gpu_mem_free(gpu_id, ptr_2);
+
+ printf("\n=======> TEST: FAILED\n");
+ return -1;
+}
+
+static int
+register_cpu_memory(uint16_t gpu_id)
+{
+ void *ptr = NULL;
+ size_t buf_bytes = 1024;
+ int ret;
+
+ printf("\n=======> TEST: Register CPU memory\n\n");
+
+ /* Alloc memory on CPU visible from GPU 0 */
+ ptr = rte_zmalloc(NULL, buf_bytes, 0);
+ if (ptr == NULL) {
+ fprintf(stderr, "Failed to allocate CPU memory.\n");
+ goto error;
+ }
+
+ ret = rte_gpu_mem_register(gpu_id, buf_bytes, ptr);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_mem_register CPU memory returned error %d\n", ret);
+ goto error;
+ }
+ printf("CPU memory registered at 0x%p %zdB\n", ptr, buf_bytes);
+
+ ret = rte_gpu_mem_unregister(gpu_id, (uint8_t *)(ptr)+0x700);
+ if (ret < 0) {
+ printf("CPU memory 0x%p NOT unregistered: GPU driver didn't find this memory address internally\n",
+ (uint8_t *)(ptr)+0x700);
+ } else {
+ fprintf(stderr, "ERROR: rte_gpu_mem_unregister unregistered GPU memory 0x%p\n",
+ (uint8_t *)(ptr)+0x700);
+ goto error;
+ }
+
+ ret = rte_gpu_mem_unregister(gpu_id, ptr);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_mem_unregister returned error %d\n", ret);
+ goto error;
+ }
+ printf("CPU memory 0x%p unregistered\n", ptr);
+
+ rte_free(ptr);
+
+ printf("\n=======> TEST: PASSED\n");
+ return 0;
+
+error:
+
+ rte_gpu_mem_unregister(gpu_id, ptr);
+ rte_free(ptr);
+ printf("\n=======> TEST: FAILED\n");
+ return -1;
+}
+
+static int
+create_update_comm_flag(uint16_t gpu_id)
+{
+ struct rte_gpu_comm_flag devflag;
+ int ret = 0;
+ uint32_t set_val;
+ uint32_t get_val;
+
+ printf("\n=======> TEST: Communication flag\n\n");
+
+ ret = rte_gpu_comm_create_flag(gpu_id, &devflag, RTE_GPU_COMM_FLAG_CPU);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_create_flag returned error %d\n", ret);
+ goto error;
+ }
+
+ set_val = 25;
+ ret = rte_gpu_comm_set_flag(&devflag, set_val);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_set_flag returned error %d\n", ret);
+ goto error;
+ }
+
+ ret = rte_gpu_comm_get_flag_value(&devflag, &get_val);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_get_flag_value returned error %d\n", ret);
+ goto error;
+ }
+
+ printf("Communication flag value at 0x%p was set to %d and current value is %d\n",
+ devflag.ptr, set_val, get_val);
+
+ set_val = 38;
+ ret = rte_gpu_comm_set_flag(&devflag, set_val);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_set_flag returned error %d\n", ret);
+ goto error;
+ }
+
+ ret = rte_gpu_comm_get_flag_value(&devflag, &get_val);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_get_flag_value returned error %d\n", ret);
+ goto error;
+ }
+
+ printf("Communication flag value at 0x%p was set to %d and current value is %d\n",
+ devflag.ptr, set_val, get_val);
+
+ ret = rte_gpu_comm_destroy_flag(&devflag);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_destroy_flags returned error %d\n", ret);
+ goto error;
+ }
+
+ printf("\n=======> TEST: PASSED\n");
+ return 0;
+
+error:
+
+ rte_gpu_comm_destroy_flag(&devflag);
+ printf("\n=======> TEST: FAILED\n");
+ return -1;
+}
+
+static int
+simulate_gpu_task(struct rte_gpu_comm_list *comm_list_item, int num_pkts)
+{
+ int idx;
+
+ if (comm_list_item == NULL)
+ return -1;
+
+ for (idx = 0; idx < num_pkts; idx++) {
+ /**
+ * consume(comm_list_item->pkt_list[idx].addr);
+ */
+ }
+ comm_list_item->status = RTE_GPU_COMM_LIST_DONE;
+
+ return 0;
+}
+
+static int
+create_update_comm_list(uint16_t gpu_id)
+{
+ int ret = 0;
+ int i = 0;
+ struct rte_gpu_comm_list *comm_list = NULL;
+ uint32_t num_comm_items = 1024;
+ struct rte_mbuf *mbufs[10];
+
+ printf("\n=======> TEST: Communication list\n\n");
+
+ comm_list = rte_gpu_comm_create_list(gpu_id, num_comm_items);
+ if (comm_list == NULL) {
+ fprintf(stderr, "rte_gpu_comm_create_list returned error %d\n", ret);
+ goto error;
+ }
+
+ /**
+ * Simulate DPDK receive functions like rte_eth_rx_burst()
+ */
+ for (i = 0; i < 10; i++) {
+ mbufs[i] = rte_zmalloc(NULL, sizeof(struct rte_mbuf), 0);
+ if (mbufs[i] == NULL) {
+ fprintf(stderr, "Failed to allocate fake mbufs in CPU memory.\n");
+ goto error;
+ }
+
+ memset(mbufs[i], 0, sizeof(struct rte_mbuf));
+ }
+
+ /**
+ * Populate just the first item of the list
+ */
+ ret = rte_gpu_comm_populate_list_pkts(&(comm_list[0]), mbufs, 10);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_populate_list_pkts returned error %d\n", ret);
+ goto error;
+ }
+
+ ret = rte_gpu_comm_cleanup_list(&(comm_list[0]));
+ if (ret == 0) {
+ fprintf(stderr, "rte_gpu_comm_cleanup_list erroneously cleaned the list even if packets have not been consumed yet\n");
+ goto error;
+ }
+ printf("Communication list not cleaned because packets have not been consumed yet.\n");
+
+ /**
+ * Simulate a GPU tasks going through the packet list to consume
+ * mbufs packets and release them
+ */
+ printf("Consuming packets...\n");
+ simulate_gpu_task(&(comm_list[0]), 10);
+
+ /**
+ * Packets have been consumed, now the communication item
+ * and the related mbufs can be all released
+ */
+ ret = rte_gpu_comm_cleanup_list(&(comm_list[0]));
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_cleanup_list returned error %d\n", ret);
+ goto error;
+ }
+
+ printf("Communication list cleaned because packets have been consumed now.\n");
+
+ ret = rte_gpu_comm_destroy_list(comm_list, num_comm_items);
+ if (ret < 0) {
+ fprintf(stderr, "rte_gpu_comm_destroy_list returned error %d\n", ret);
+ goto error;
+ }
+
+ for (i = 0; i < 10; i++)
+ rte_free(mbufs[i]);
+
+ printf("\n=======> TEST: PASSED\n");
+ return 0;
+
+error:
+
+ rte_gpu_comm_destroy_list(comm_list, num_comm_items);
+ for (i = 0; i < 10; i++)
+ rte_free(mbufs[i]);
+ printf("\n=======> TEST: FAILED\n");
+ return -1;
+}
+
int
main(int argc, char **argv)
{
}
printf("\n\n");
+ if (nb_gpus == 0) {
+ fprintf(stderr, "Need at least one GPU on the system to run the example\n");
+ return EXIT_FAILURE;
+ }
+
+ gpu_id = 0;
+
+ /**
+ * Memory tests
+ */
+ alloc_gpu_memory(gpu_id);
+ register_cpu_memory(gpu_id);
+
+ /**
+ * Communication items test
+ */
+ create_update_comm_flag(gpu_id);
+ create_update_comm_list(gpu_id);
+
/* clean up the EAL */
rte_eal_cleanup();
- printf("Bye...\n");
return EXIT_SUCCESS;
}
git.droids-corp.org / dpdk.git / blobdiff