ceph/src/dpdk/drivers/net/virtio/virtio_rxtx.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2015 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 _VIRTIO_RXTX_H_
  35 #define _VIRTIO_RXTX_H_
  36
  37 #define RTE_PMD_VIRTIO_RX_MAX_BURST 64
  38
  39 struct virtnet_stats {
  40         uint64_t        packets;
  41         uint64_t        bytes;
  42         uint64_t        errors;
  43         uint64_t        multicast;
  44         uint64_t        broadcast;
  45         /* Size bins in array as RFC 2819, undersized [0], 64 [1], etc */
  46         uint64_t        size_bins[8];
  47 };
  48
  49 struct virtnet_rx {
  50         struct virtqueue *vq;
  51         /* dummy mbuf, for wraparound when processing RX ring. */
  52         struct rte_mbuf fake_mbuf;
  53         uint64_t mbuf_initializer; /**< value to init mbufs. */
  54         struct rte_mempool *mpool; /**< mempool for mbuf allocation */
  55
  56         uint16_t queue_id;   /**< DPDK queue index. */
  57         uint8_t port_id;     /**< Device port identifier. */
  58
  59         /* Statistics */
  60         struct virtnet_stats stats;
  61
  62         const struct rte_memzone *mz; /**< mem zone to populate RX ring. */
  63 };
  64
  65 struct virtnet_tx {
  66         struct virtqueue *vq;
  67         /**< memzone to populate hdr. */
  68         const struct rte_memzone *virtio_net_hdr_mz;
  69         phys_addr_t virtio_net_hdr_mem;  /**< hdr for each xmit packet */
  70
  71         uint16_t    queue_id;            /**< DPDK queue index. */
  72         uint8_t     port_id;             /**< Device port identifier. */
  73
  74         /* Statistics */
  75         struct virtnet_stats stats;
  76
  77         const struct rte_memzone *mz;    /**< mem zone to populate TX ring. */
  78 };
  79
  80 struct virtnet_ctl {
  81         struct virtqueue *vq;
  82         /**< memzone to populate hdr. */
  83         const struct rte_memzone *virtio_net_hdr_mz;
  84         phys_addr_t virtio_net_hdr_mem; /**< hdr for each xmit packet */
  85         uint8_t port_id;                /**< Device port identifier. */
  86         const struct rte_memzone *mz;   /**< mem zone to populate RX ring. */
  87 };
  88
  89 int virtio_rxq_vec_setup(struct virtnet_rx *rxvq);
  90
  91 int virtqueue_enqueue_recv_refill_simple(struct virtqueue *vq,
  92         struct rte_mbuf *m);
  93
  94 #endif /* _VIRTIO_RXTX_H_ */