+/**
+ * Master thread
+ */
+static struct pipeline_msg_req *
+pipeline_msg_alloc(void)
+{
+ size_t size = RTE_MAX(sizeof(struct pipeline_msg_req),
+ sizeof(struct pipeline_msg_rsp));
+
+ return calloc(1, size);
+}
+
+static void
+pipeline_msg_free(struct pipeline_msg_rsp *rsp)
+{
+ free(rsp);
+}
+
+static struct pipeline_msg_rsp *
+pipeline_msg_send_recv(struct pipeline *p,
+ struct pipeline_msg_req *req)
+{
+ struct rte_ring *msgq_req = p->msgq_req;
+ struct rte_ring *msgq_rsp = p->msgq_rsp;
+ struct pipeline_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
+pipeline_port_in_enable(const char *pipeline_name,
+ uint32_t port_id)
+{
+ struct pipeline *p;
+ struct pipeline_msg_req *req;
+ struct pipeline_msg_rsp *rsp;
+ int status;
+
+ /* Check input params */
+ if (pipeline_name == NULL)
+ return -1;
+
+ p = pipeline_find(pipeline_name);
+ if ((p == NULL) ||
+ (p->enabled == 0) ||
+ (port_id >= p->n_ports_in))
+ return -1;
+
+ /* Allocate request */
+ req = pipeline_msg_alloc();
+ if (req == NULL)
+ return -1;
+
+ /* Write request */
+ req->type = PIPELINE_REQ_PORT_IN_ENABLE;
+ req->id = port_id;
+
+ /* Send request and wait for response */
+ rsp = pipeline_msg_send_recv(p, req);
+ if (rsp == NULL)
+ return -1;
+
+ /* Read response */
+ status = rsp->status;
+
+ /* Free response */
+ pipeline_msg_free(rsp);
+
+ return status;
+}
+
+int
+pipeline_port_in_disable(const char *pipeline_name,
+ uint32_t port_id)
+{
+ struct pipeline *p;
+ struct pipeline_msg_req *req;
+ struct pipeline_msg_rsp *rsp;
+ int status;
+
+ /* Check input params */
+ if (pipeline_name == NULL)
+ return -1;
+
+ p = pipeline_find(pipeline_name);
+ if ((p == NULL) ||
+ (p->enabled == 0) ||
+ (port_id >= p->n_ports_in))
+ return -1;
+
+ /* Allocate request */
+ req = pipeline_msg_alloc();
+ if (req == NULL)
+ return -1;
+
+ /* Write request */
+ req->type = PIPELINE_REQ_PORT_IN_DISABLE;
+ req->id = port_id;
+
+ /* Send request and wait for response */
+ rsp = pipeline_msg_send_recv(p, req);
+ if (rsp == NULL)
+ return -1;
+
+ /* Read response */
+ status = rsp->status;
+
+ /* Free response */
+ pipeline_msg_free(rsp);
+
+ return status;
+}
+
+