+/**
+ * Master thread
+ */
+static struct thread_msg_req *
+thread_msg_alloc(void)
+{
+ size_t size = RTE_MAX(sizeof(struct thread_msg_req),
+ sizeof(struct thread_msg_rsp));
+
+ return calloc(1, size);
+}
+
+static void
+thread_msg_free(struct thread_msg_rsp *rsp)
+{
+ free(rsp);
+}
+
+static struct thread_msg_rsp *
+thread_msg_send_recv(uint32_t thread_id,
+ struct thread_msg_req *req)
+{
+ struct thread *t = &thread[thread_id];
+ struct rte_ring *msgq_req = t->msgq_req;
+ struct rte_ring *msgq_rsp = t->msgq_rsp;
+ struct thread_msg_rsp *rsp;
+ int status;
+
+ /* send */
+ do {
+ status = rte_ring_sp_enqueue(msgq_req, req);
+ } while (status == -ENOBUFS);
+
+ /* recv */
+ do {
+ status = rte_ring_sc_dequeue(msgq_rsp, (void **) &rsp);
+ } while (status != 0);
+
+ return rsp;
+}
+
+int
+thread_pipeline_enable(uint32_t thread_id,
+ const char *pipeline_name)
+{
+ struct pipeline *p = pipeline_find(pipeline_name);
+ struct thread *t;
+ struct thread_msg_req *req;
+ struct thread_msg_rsp *rsp;
+ uint32_t i;
+ int status;
+
+ /* Check input params */
+ if ((thread_id >= RTE_MAX_LCORE) ||
+ (p == NULL) ||
+ (p->n_ports_in == 0) ||
+ (p->n_ports_out == 0) ||
+ (p->n_tables == 0))
+ return -1;
+
+ t = &thread[thread_id];
+ if ((t->enabled == 0) ||
+ p->enabled)
+ return -1;
+
+ /* Allocate request */
+ req = thread_msg_alloc();
+ if (req == NULL)
+ return -1;
+
+ /* Write request */
+ req->type = THREAD_REQ_PIPELINE_ENABLE;
+ req->pipeline_enable.p = p->p;
+ for (i = 0; i < p->n_tables; i++)
+ req->pipeline_enable.table[i].a =
+ p->table[i].a;
+ req->pipeline_enable.msgq_req = p->msgq_req;
+ req->pipeline_enable.msgq_rsp = p->msgq_rsp;
+ req->pipeline_enable.timer_period_ms = p->timer_period_ms;
+ req->pipeline_enable.n_tables = p->n_tables;
+
+ /* Send request and wait for response */
+ rsp = thread_msg_send_recv(thread_id, req);
+ if (rsp == NULL)
+ return -1;
+
+ /* Read response */
+ status = rsp->status;
+
+ /* Free response */
+ thread_msg_free(rsp);
+
+ /* Request completion */
+ if (status)
+ return status;
+
+ p->thread_id = thread_id;
+ p->enabled = 1;
+
+ return 0;
+}
+
+int
+thread_pipeline_disable(uint32_t thread_id,
+ const char *pipeline_name)
+{
+ struct pipeline *p = pipeline_find(pipeline_name);
+ struct thread *t;
+ struct thread_msg_req *req;
+ struct thread_msg_rsp *rsp;
+ int status;
+
+ /* Check input params */
+ if ((thread_id >= RTE_MAX_LCORE) ||
+ (p == NULL))
+ return -1;
+
+ t = &thread[thread_id];
+ if (t->enabled == 0)
+ return -1;
+
+ if (p->enabled == 0)
+ return 0;
+
+ if (p->thread_id != thread_id)
+ return -1;
+
+ /* Allocate request */
+ req = thread_msg_alloc();
+ if (req == NULL)
+ return -1;
+
+ /* Write request */
+ req->type = THREAD_REQ_PIPELINE_DISABLE;
+ req->pipeline_disable.p = p->p;
+
+ /* Send request and wait for response */
+ rsp = thread_msg_send_recv(thread_id, req);
+ if (rsp == NULL)
+ return -1;
+
+ /* Read response */
+ status = rsp->status;
+
+ /* Free response */
+ thread_msg_free(rsp);
+
+ /* Request completion */
+ if (status)
+ return status;
+
+ p->enabled = 0;
+
+ return 0;
+}
+