ceph/src/seastar/dpdk/lib/librte_port/rte_port_ras.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #ifndef __INCLUDE_RTE_PORT_RAS_H__
   6 #define __INCLUDE_RTE_PORT_RAS_H__
   7
   8 #ifdef __cplusplus
   9 extern "C" {
  10 #endif
  11
  12 /**
  13  * @file
  14  * RTE Port for IPv4 Reassembly
  15  *
  16  * This port is built on top of pre-initialized single producer rte_ring. In
  17  * order to minimize the amount of packets stored in the ring at any given
  18  * time, the IP reassembly functionality is executed on ring write operation,
  19  * hence this port is implemented as an output port. A regular ring_reader port
  20  * can be created to read from the same ring.
  21  *
  22  * The packets written to the ring are either complete IP datagrams or IP
  23  * fragments. The packets read from the ring are all complete IP datagrams,
  24  * either jumbo frames (i.e. IP packets with length bigger than MTU) or not.
  25  * The complete IP datagrams written to the ring are not changed. The IP
  26  * fragments written to the ring are first reassembled and into complete IP
  27  * datagrams or dropped on error or IP reassembly time-out.
  28  *
  29  ***/
  30
  31 #include <stdint.h>
  32
  33 #include <rte_ring.h>
  34
  35 #include "rte_port.h"
  36
  37 /** ring_writer_ipv4_ras port parameters */
  38 struct rte_port_ring_writer_ras_params {
  39         /** Underlying single consumer ring that has to be pre-initialized. */
  40         struct rte_ring *ring;
  41
  42         /** Recommended burst size to ring. The actual burst size can be bigger
  43         or smaller than this value. */
  44         uint32_t tx_burst_sz;
  45 };
  46
  47 #define rte_port_ring_writer_ipv4_ras_params rte_port_ring_writer_ras_params
  48
  49 #define rte_port_ring_writer_ipv6_ras_params rte_port_ring_writer_ras_params
  50
  51 /** ring_writer_ipv4_ras port operations */
  52 extern struct rte_port_out_ops rte_port_ring_writer_ipv4_ras_ops;
  53
  54 /** ring_writer_ipv6_ras port operations */
  55 extern struct rte_port_out_ops rte_port_ring_writer_ipv6_ras_ops;
  56
  57 #ifdef __cplusplus
  58 }
  59 #endif
  60
  61 #endif