ceph/src/dpdk/lib/librte_port/rte_port_fd.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2016 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifndef __INCLUDE_RTE_PORT_FD_H__
  35 #define __INCLUDE_RTE_PORT_FD_H__
  36
  37 #ifdef __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 /**
  42  * @file
  43  * RTE Port FD Device
  44  *
  45  * fd_reader: input port built on top of valid non-blocking file descriptor
  46  * fd_writer: output port built on top of valid non-blocking file descriptor
  47  *
  48  ***/
  49
  50 #include <stdint.h>
  51
  52 #include <rte_mempool.h>
  53 #include "rte_port.h"
  54
  55 /** fd_reader port parameters */
  56 struct rte_port_fd_reader_params {
  57         /** File descriptor */
  58         int fd;
  59
  60         /** Maximum Transfer Unit (MTU) */
  61         uint32_t mtu;
  62
  63         /** Pre-initialized buffer pool */
  64         struct rte_mempool *mempool;
  65 };
  66
  67 /** fd_reader port operations */
  68 extern struct rte_port_in_ops rte_port_fd_reader_ops;
  69
  70 /** fd_writer port parameters */
  71 struct rte_port_fd_writer_params {
  72         /** File descriptor */
  73         int fd;
  74
  75         /**< Recommended write burst size. The actual burst size can be
  76          * bigger or smaller than this value.
  77          */
  78         uint32_t tx_burst_sz;
  79 };
  80
  81 /** fd_writer port operations */
  82 extern struct rte_port_out_ops rte_port_fd_writer_ops;
  83
  84 /** fd_writer_nodrop port parameters */
  85 struct rte_port_fd_writer_nodrop_params {
  86         /** File descriptor */
  87         int fd;
  88
  89         /**< Recommended write burst size. The actual burst size can be
  90          * bigger or smaller than this value.
  91          */
  92         uint32_t tx_burst_sz;
  93
  94         /** Maximum number of retries, 0 for no limit */
  95         uint32_t n_retries;
  96 };
  97
  98 /** fd_writer_nodrop port operations */
  99 extern struct rte_port_out_ops rte_port_fd_writer_nodrop_ops;
 100
 101 #ifdef __cplusplus
 102 }
 103 #endif
 104
 105 #endif