text: /* SPDX-License-Identifier: BSD-3-Clause
   * Copyright(c) 2010-2015 Intel Corporation
   */
  
  #ifndef _VIRTIO_ETHDEV_H_
  #define _VIRTIO_ETHDEV_H_
  
  #include <stdint.h>
  
  #include "virtio_pci.h"
  
  #ifndef PAGE_SIZE
  #define PAGE_SIZE 4096
  #endif
  
  #define VIRTIO_MAX_RX_QUEUES 128U
  #define VIRTIO_MAX_TX_QUEUES 128U
  #define VIRTIO_MAX_MAC_ADDRS 64
  #define VIRTIO_MIN_RX_BUFSIZE 64
  #define VIRTIO_MAX_RX_PKTLEN  9728U
  
  /* Features desired/implemented by this driver. */
  #define VIRTIO_PMD_DEFAULT_GUEST_FEATURES	\
  	(1u << VIRTIO_NET_F_MAC		  |	\
  	 1u << VIRTIO_NET_F_STATUS	  |	\
  	 1u << VIRTIO_NET_F_MQ		  |	\
  	 1u << VIRTIO_NET_F_CTRL_MAC_ADDR |	\
  	 1u << VIRTIO_NET_F_CTRL_VQ	  |	\
  	 1u << VIRTIO_NET_F_CTRL_RX	  |	\
  	 1u << VIRTIO_NET_F_CTRL_VLAN	  |	\
  	 1u << VIRTIO_NET_F_MRG_RXBUF	  |	\
  	 1u << VIRTIO_NET_F_MTU	| \
  	 1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE |	\
  	 1u << VIRTIO_RING_F_INDIRECT_DESC |    \
  	 1ULL << VIRTIO_F_VERSION_1       |	\
  	 1ULL << VIRTIO_F_IN_ORDER        |	\
  	 1ULL << VIRTIO_F_RING_PACKED	  |	\
  	 1ULL << VIRTIO_F_IOMMU_PLATFORM  |	\
  	 1ULL << VIRTIO_F_ORDER_PLATFORM  |	\
  	 1ULL << VIRTIO_F_NOTIFICATION_DATA)
  
  #define VIRTIO_PMD_SUPPORTED_GUEST_FEATURES	\
  	(VIRTIO_PMD_DEFAULT_GUEST_FEATURES |	\
  	 1u << VIRTIO_NET_F_GUEST_CSUM	   |	\
  	 1u << VIRTIO_NET_F_GUEST_TSO4     |	\
  	 1u << VIRTIO_NET_F_GUEST_TSO6     |	\
  	 1u << VIRTIO_NET_F_CSUM           |	\
  	 1u << VIRTIO_NET_F_HOST_TSO4      |	\
  	 1u << VIRTIO_NET_F_HOST_TSO6)
  
  extern const struct eth_dev_ops virtio_user_secondary_eth_dev_ops;
  
  /*
   * CQ function prototype
   */
  void virtio_dev_cq_start(struct rte_eth_dev *dev);
  
  /*
   * RX/TX function prototypes
   */
  
  int virtio_dev_rx_queue_done(void *rxq, uint16_t offset);
  
  int  virtio_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
  		uint16_t nb_rx_desc, unsigned int socket_id,
  		const struct rte_eth_rxconf *rx_conf,
  		struct rte_mempool *mb_pool);
  
  int virtio_dev_rx_queue_setup_finish(struct rte_eth_dev *dev,
  				uint16_t rx_queue_id);
  
  int  virtio_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
  		uint16_t nb_tx_desc, unsigned int socket_id,
  		const struct rte_eth_txconf *tx_conf);
  
  int virtio_dev_tx_queue_setup_finish(struct rte_eth_dev *dev,
  				uint16_t tx_queue_id);
  
  uint16_t virtio_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
  		uint16_t nb_pkts);
  uint16_t virtio_recv_pkts_packed(void *rx_queue, struct rte_mbuf **rx_pkts,
  		uint16_t nb_pkts);
  
  uint16_t virtio_recv_mergeable_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
  		uint16_t nb_pkts);
  
  uint16_t virtio_recv_mergeable_pkts_packed(void *rx_queue,
  		struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
  
  uint16_t virtio_recv_pkts_inorder(void *rx_queue,
  		struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
  
  uint16_t virtio_xmit_pkts_prepare(void *tx_queue, struct rte_mbuf **tx_pkts,
  		uint16_t nb_pkts);
  
  uint16_t virtio_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
  		uint16_t nb_pkts);
  uint16_t virtio_xmit_pkts_packed(void *tx_queue, struct rte_mbuf **tx_pkts,
  		uint16_t nb_pkts);
  
  uint16_t virtio_xmit_pkts_inorder(void *tx_queue, struct rte_mbuf **tx_pkts,
  		uint16_t nb_pkts);
  
  uint16_t virtio_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
  		uint16_t nb_pkts);
  
  int eth_virtio_dev_init(struct rte_eth_dev *eth_dev);
  
  void virtio_interrupt_handler(void *param);
  
  int virtio_dev_pause(struct rte_eth_dev *dev);
  void virtio_dev_resume(struct rte_eth_dev *dev);
  int virtio_inject_pkts(struct rte_eth_dev *dev, struct rte_mbuf **tx_pkts,
  		int nb_pkts);
  
  #endif /* _VIRTIO_ETHDEV_H_ */
  