#include <pthread.h>
#include <string.h>
+#include <rte_common.h>
#include <rte_errno.h>
#include <rte_lcore.h>
return ret;
}
+struct limit_lcore_context {
+ unsigned int init;
+ unsigned int max;
+ unsigned int uninit;
+};
+
+static int
+limit_lcores_init(unsigned int lcore_id __rte_unused, void *arg)
+{
+ struct limit_lcore_context *l = arg;
+
+ l->init++;
+ if (l->init > l->max)
+ return -1;
+ return 0;
+}
+
+static void
+limit_lcores_uninit(unsigned int lcore_id __rte_unused, void *arg)
+{
+ struct limit_lcore_context *l = arg;
+
+ l->uninit++;
+}
+
+static int
+test_lcores_callback(unsigned int eal_threads_count)
+{
+ struct limit_lcore_context l;
+ void *handle;
+
+ /* Refuse last lcore => callback register error. */
+ memset(&l, 0, sizeof(l));
+ l.max = eal_threads_count - 1;
+ handle = rte_lcore_callback_register("limit", limit_lcores_init,
+ limit_lcores_uninit, &l);
+ if (handle != NULL) {
+ printf("Error: lcore callback register should have failed\n");
+ goto error;
+ }
+ /* Refusal happens at the n th call to the init callback.
+ * Besides, n - 1 were accepted, so we expect as many uninit calls when
+ * the rollback happens.
+ */
+ if (l.init != eal_threads_count) {
+ printf("Error: lcore callback register failed but incorrect init calls, expected %u, got %u\n",
+ eal_threads_count, l.init);
+ goto error;
+ }
+ if (l.uninit != eal_threads_count - 1) {
+ printf("Error: lcore callback register failed but incorrect uninit calls, expected %u, got %u\n",
+ eal_threads_count - 1, l.uninit);
+ goto error;
+ }
+
+ /* Accept all lcore and unregister. */
+ memset(&l, 0, sizeof(l));
+ l.max = eal_threads_count;
+ handle = rte_lcore_callback_register("limit", limit_lcores_init,
+ limit_lcores_uninit, &l);
+ if (handle == NULL) {
+ printf("Error: lcore callback register failed\n");
+ goto error;
+ }
+ if (l.uninit != 0) {
+ printf("Error: lcore callback register succeeded but incorrect uninit calls, expected 0, got %u\n",
+ l.uninit);
+ goto error;
+ }
+ rte_lcore_callback_unregister(handle);
+ handle = NULL;
+ if (l.init != eal_threads_count) {
+ printf("Error: lcore callback unregister done but incorrect init calls, expected %u, got %u\n",
+ eal_threads_count, l.init);
+ goto error;
+ }
+ if (l.uninit != eal_threads_count) {
+ printf("Error: lcore callback unregister done but incorrect uninit calls, expected %u, got %u\n",
+ eal_threads_count, l.uninit);
+ goto error;
+ }
+
+ return 0;
+
+error:
+ if (handle != NULL)
+ rte_lcore_callback_unregister(handle);
+
+ return -1;
+}
+
+static int
+test_non_eal_lcores_callback(unsigned int eal_threads_count)
+{
+ struct thread_context thread_contexts[2];
+ unsigned int non_eal_threads_count = 0;
+ struct limit_lcore_context l[2] = {};
+ unsigned int registered_count = 0;
+ struct thread_context *t;
+ void *handle[2] = {};
+ unsigned int i;
+ int ret;
+
+ /* This test requires two empty slots to be sure lcore init refusal is
+ * because of callback execution.
+ */
+ if (eal_threads_count + 2 >= RTE_MAX_LCORE)
+ return 0;
+
+ /* Register two callbacks:
+ * - first one accepts any lcore,
+ * - second one accepts all EAL lcore + one more for the first non-EAL
+ * thread, then refuses the next lcore.
+ */
+ l[0].max = UINT_MAX;
+ handle[0] = rte_lcore_callback_register("no_limit", limit_lcores_init,
+ limit_lcores_uninit, &l[0]);
+ if (handle[0] == NULL) {
+ printf("Error: lcore callback [0] register failed\n");
+ goto error;
+ }
+ l[1].max = eal_threads_count + 1;
+ handle[1] = rte_lcore_callback_register("limit", limit_lcores_init,
+ limit_lcores_uninit, &l[1]);
+ if (handle[1] == NULL) {
+ printf("Error: lcore callback [1] register failed\n");
+ goto error;
+ }
+ if (l[0].init != eal_threads_count || l[1].init != eal_threads_count) {
+ printf("Error: lcore callbacks register succeeded but incorrect init calls, expected %u, %u, got %u, %u\n",
+ eal_threads_count, eal_threads_count,
+ l[0].init, l[1].init);
+ goto error;
+ }
+ if (l[0].uninit != 0 || l[1].uninit != 0) {
+ printf("Error: lcore callbacks register succeeded but incorrect uninit calls, expected 0, 1, got %u, %u\n",
+ l[0].uninit, l[1].uninit);
+ goto error;
+ }
+ /* First thread that expects a valid lcore id. */
+ t = &thread_contexts[0];
+ t->state = INIT;
+ t->registered_count = ®istered_count;
+ t->lcore_id_any = false;
+ if (pthread_create(&t->id, NULL, thread_loop, t) != 0)
+ goto cleanup_threads;
+ non_eal_threads_count++;
+ while (__atomic_load_n(®istered_count, __ATOMIC_ACQUIRE) !=
+ non_eal_threads_count)
+ ;
+ if (l[0].init != eal_threads_count + 1 ||
+ l[1].init != eal_threads_count + 1) {
+ printf("Error: incorrect init calls, expected %u, %u, got %u, %u\n",
+ eal_threads_count + 1, eal_threads_count + 1,
+ l[0].init, l[1].init);
+ goto cleanup_threads;
+ }
+ if (l[0].uninit != 0 || l[1].uninit != 0) {
+ printf("Error: incorrect uninit calls, expected 0, 0, got %u, %u\n",
+ l[0].uninit, l[1].uninit);
+ goto cleanup_threads;
+ }
+ /* Second thread, that expects LCORE_ID_ANY because of init refusal. */
+ t = &thread_contexts[1];
+ t->state = INIT;
+ t->registered_count = ®istered_count;
+ t->lcore_id_any = true;
+ if (pthread_create(&t->id, NULL, thread_loop, t) != 0)
+ goto cleanup_threads;
+ non_eal_threads_count++;
+ while (__atomic_load_n(®istered_count, __ATOMIC_ACQUIRE) !=
+ non_eal_threads_count)
+ ;
+ if (l[0].init != eal_threads_count + 2 ||
+ l[1].init != eal_threads_count + 2) {
+ printf("Error: incorrect init calls, expected %u, %u, got %u, %u\n",
+ eal_threads_count + 2, eal_threads_count + 2,
+ l[0].init, l[1].init);
+ goto cleanup_threads;
+ }
+ if (l[0].uninit != 1 || l[1].uninit != 0) {
+ printf("Error: incorrect uninit calls, expected 1, 0, got %u, %u\n",
+ l[0].uninit, l[1].uninit);
+ goto cleanup_threads;
+ }
+ /* Release all threads, and check their states. */
+ __atomic_store_n(®istered_count, 0, __ATOMIC_RELEASE);
+ ret = 0;
+ for (i = 0; i < non_eal_threads_count; i++) {
+ t = &thread_contexts[i];
+ pthread_join(t->id, NULL);
+ if (t->state != DONE)
+ ret = -1;
+ }
+ if (ret < 0)
+ goto error;
+ if (l[0].uninit != 2 || l[1].uninit != 1) {
+ printf("Error: threads reported having successfully registered and unregistered, but incorrect uninit calls, expected 2, 1, got %u, %u\n",
+ l[0].uninit, l[1].uninit);
+ goto error;
+ }
+ rte_lcore_callback_unregister(handle[0]);
+ rte_lcore_callback_unregister(handle[1]);
+ return 0;
+
+cleanup_threads:
+ /* Release all threads */
+ __atomic_store_n(®istered_count, 0, __ATOMIC_RELEASE);
+ for (i = 0; i < non_eal_threads_count; i++) {
+ t = &thread_contexts[i];
+ pthread_join(t->id, NULL);
+ }
+error:
+ if (handle[1] != NULL)
+ rte_lcore_callback_unregister(handle[1]);
+ if (handle[0] != NULL)
+ rte_lcore_callback_unregister(handle[0]);
+ return -1;
+}
+
static int
test_lcores(void)
{
if (test_non_eal_lcores(eal_threads_count) < 0)
return TEST_FAILED;
+ if (test_lcores_callback(eal_threads_count) < 0)
+ return TEST_FAILED;
+
+ if (test_non_eal_lcores_callback(eal_threads_count) < 0)
+ return TEST_FAILED;
+
return TEST_SUCCESS;
}
git.droids-corp.org / dpdk.git / blobdiff