ceph/src/seastar/dpdk/examples/vhost/main.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2017 Intel Corporation
   3  */
   4
   5 #ifndef _MAIN_H_
   6 #define _MAIN_H_
   7
   8 #include <sys/queue.h>
   9
  10 #include <rte_ether.h>
  11
  12 /* Macros for printing using RTE_LOG */
  13 #define RTE_LOGTYPE_VHOST_CONFIG RTE_LOGTYPE_USER1
  14 #define RTE_LOGTYPE_VHOST_DATA   RTE_LOGTYPE_USER2
  15 #define RTE_LOGTYPE_VHOST_PORT   RTE_LOGTYPE_USER3
  16
  17 enum {VIRTIO_RXQ, VIRTIO_TXQ, VIRTIO_QNUM};
  18
  19 #define MAX_PKT_BURST 32                /* Max burst size for RX/TX */
  20
  21 struct device_statistics {
  22         uint64_t        tx;
  23         uint64_t        tx_total;
  24         rte_atomic64_t  rx_atomic;
  25         rte_atomic64_t  rx_total_atomic;
  26 };
  27
  28 struct vhost_queue {
  29         struct rte_vhost_vring  vr;
  30         uint16_t                last_avail_idx;
  31         uint16_t                last_used_idx;
  32 };
  33
  34 struct vhost_dev {
  35         /**< Number of memory regions for gpa to hpa translation. */
  36         uint32_t nregions_hpa;
  37         /**< Device MAC address (Obtained on first TX packet). */
  38         struct ether_addr mac_address;
  39         /**< RX VMDQ queue number. */
  40         uint16_t vmdq_rx_q;
  41         /**< Vlan tag assigned to the pool */
  42         uint32_t vlan_tag;
  43         /**< Data core that the device is added to. */
  44         uint16_t coreid;
  45         /**< A device is set as ready if the MAC address has been set. */
  46         volatile uint8_t ready;
  47         /**< Device is marked for removal from the data core. */
  48         volatile uint8_t remove;
  49
  50         int vid;
  51         uint64_t features;
  52         size_t hdr_len;
  53         uint16_t nr_vrings;
  54         struct rte_vhost_memory *mem;
  55         struct device_statistics stats;
  56         TAILQ_ENTRY(vhost_dev) global_vdev_entry;
  57         TAILQ_ENTRY(vhost_dev) lcore_vdev_entry;
  58
  59 #define MAX_QUEUE_PAIRS 4
  60         struct vhost_queue queues[MAX_QUEUE_PAIRS * 2];
  61 } __rte_cache_aligned;
  62
  63 TAILQ_HEAD(vhost_dev_tailq_list, vhost_dev);
  64
  65
  66 #define REQUEST_DEV_REMOVAL     1
  67 #define ACK_DEV_REMOVAL         0
  68
  69 /*
  70  * Structure containing data core specific information.
  71  */
  72 struct lcore_info {
  73         uint32_t                device_num;
  74
  75         /* Flag to synchronize device removal. */
  76         volatile uint8_t        dev_removal_flag;
  77
  78         struct vhost_dev_tailq_list vdev_list;
  79 };
  80
  81 /* we implement non-extra virtio net features */
  82 #define VIRTIO_NET_FEATURES     0
  83
  84 void vs_vhost_net_setup(struct vhost_dev *dev);
  85 void vs_vhost_net_remove(struct vhost_dev *dev);
  86 uint16_t vs_enqueue_pkts(struct vhost_dev *dev, uint16_t queue_id,
  87                          struct rte_mbuf **pkts, uint32_t count);
  88
  89 uint16_t vs_dequeue_pkts(struct vhost_dev *dev, uint16_t queue_id,
  90                          struct rte_mempool *mbuf_pool,
  91                          struct rte_mbuf **pkts, uint16_t count);
  92 #endif /* _MAIN_H_ */