text: /*
  // Copyright (c) 2017 Intel Corporation
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //      http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  */
  
  #include <rte_common.h>
  #include <rte_ring.h>
  #include <rte_malloc.h>
  
  #include "pipeline_common_be.h"
  
  void *
  pipeline_msg_req_ping_handler(__rte_unused struct pipeline *p,
  	void *msg)
  {
  	struct pipeline_msg_rsp *rsp = msg;
  
  	rsp->status = 0; /* OK */
  
  	return rsp;
  }
  
  void *
  pipeline_msg_req_stats_port_in_handler(struct pipeline *p,
  	void *msg)
  {
  	struct pipeline_stats_msg_req *req = msg;
  	struct pipeline_stats_port_in_msg_rsp *rsp = msg;
  	uint32_t port_id;
  
  	/* Check request */
  	if (req->id >= p->n_ports_in) {
  		rsp->status = -1;
  		return rsp;
  	}
  	port_id = p->port_in_id[req->id];
  
  	/* Process request */
  	rsp->status = rte_pipeline_port_in_stats_read(p->p,
  		port_id,
  		&rsp->stats,
  		1);
  
  	return rsp;
  }
  
  void *
  pipeline_msg_req_stats_port_out_handler(struct pipeline *p,
  	void *msg)
  {
  	struct pipeline_stats_msg_req *req = msg;
  	struct pipeline_stats_port_out_msg_rsp *rsp = msg;
  	uint32_t port_id;
  
  	/* Check request */
  	if (req->id >= p->n_ports_out) {
  		rsp->status = -1;
  		return rsp;
  	}
  	port_id = p->port_out_id[req->id];
  
  	/* Process request */
  	rsp->status = rte_pipeline_port_out_stats_read(p->p,
  		port_id,
  		&rsp->stats,
  		1);
  
  	return rsp;
  }
  
  void *
  pipeline_msg_req_stats_table_handler(struct pipeline *p,
  	void *msg)
  {
  	struct pipeline_stats_msg_req *req = msg;
  	struct pipeline_stats_table_msg_rsp *rsp = msg;
  	uint32_t table_id;
  
  	/* Check request */
  	if (req->id >= p->n_tables) {
  		rsp->status = -1;
  		return rsp;
  	}
  	table_id = p->table_id[req->id];
  
  	/* Process request */
  	rsp->status = rte_pipeline_table_stats_read(p->p,
  		table_id,
  		&rsp->stats,
  		1);
  
  	return rsp;
  }
  
  void *
  pipeline_msg_req_port_in_enable_handler(struct pipeline *p,
  	void *msg)
  {
  	struct pipeline_port_in_msg_req *req = msg;
  	struct pipeline_msg_rsp *rsp = msg;
  	uint32_t port_id;
  
  	/* Check request */
  	if (req->port_id >= p->n_ports_in) {
  		rsp->status = -1;
  		return rsp;
  	}
  	port_id = p->port_in_id[req->port_id];
  
  	/* Process request */
  	rsp->status = rte_pipeline_port_in_enable(p->p,
  		port_id);
  
  	return rsp;
  }
  
  void *
  pipeline_msg_req_port_in_disable_handler(struct pipeline *p,
  	void *msg)
  {
  	struct pipeline_port_in_msg_req *req = msg;
  	struct pipeline_msg_rsp *rsp = msg;
  	uint32_t port_id;
  
  	/* Check request */
  	if (req->port_id >= p->n_ports_in) {
  		rsp->status = -1;
  		return rsp;
  	}
  	port_id = p->port_in_id[req->port_id];
  
  	/* Process request */
  	rsp->status = rte_pipeline_port_in_disable(p->p,
  		port_id);
  
  	return rsp;
  }
  
  void *
  pipeline_msg_req_invalid_handler(__rte_unused struct pipeline *p,
  	void *msg)
  {
  	struct pipeline_msg_rsp *rsp = msg;
  
  	rsp->status = -1; /* Error */
  
  	return rsp;
  }
  
  int
  pipeline_msg_req_handle(struct pipeline *p)
  {
  	uint32_t msgq_id;
  
  	for (msgq_id = 0; msgq_id < p->n_msgq; msgq_id++) {
  		for ( ; ; ) {
  			struct pipeline_msg_req *req;
  			pipeline_msg_req_handler f_handle;
  
  			req = pipeline_msg_recv(p, msgq_id);
  			if (req == NULL)
  				break;
  
  			f_handle = (req->type < PIPELINE_MSG_REQS) ?
  				p->handlers[req->type] :
  				pipeline_msg_req_invalid_handler;
  
  			if (f_handle == NULL)
  				f_handle = pipeline_msg_req_invalid_handler;
  
  			pipeline_msg_send(p,
  				msgq_id,
  				f_handle(p, (void *) req));
  		}
  	}
  
  	return 0;
  }
  