ceph/src/dpdk/drivers/net/bnx2x/bnx2x_rxtx.h

   1 /*
   2  * Copyright (c) 2013-2015 Brocade Communications Systems, Inc.
   3  *
   4  * Copyright (c) 2015 QLogic Corporation.
   5  * All rights reserved.
   6  * www.qlogic.com
   7  *
   8  * See LICENSE.bnx2x_pmd for copyright and licensing details.
   9  */
  10
  11 #ifndef _BNX2X_RXTX_H_
  12 #define _BNX2X_RXTX_H_
  13
  14 #define DEFAULT_TX_FREE_THRESH   512
  15 #define RTE_PMD_BNX2X_TX_MAX_BURST 1
  16
  17 /**
  18  * Structure associated with each descriptor of the RX ring of a RX queue.
  19  */
  20 struct bnx2x_rx_entry {
  21         struct rte_mbuf     *mbuf;                /**< mbuf associated with RX descriptor. */
  22 };
  23
  24 /**
  25  * Structure associated with each RX queue.
  26  */
  27 struct bnx2x_rx_queue {
  28         struct rte_mempool         *mb_pool;             /**< mbuf pool to populate RX ring. */
  29         union eth_rx_cqe           *cq_ring;             /**< RCQ ring virtual address. */
  30         uint64_t                   cq_ring_phys_addr;    /**< RCQ ring DMA address. */
  31         uint64_t                   *rx_ring;             /**< RX ring virtual address. */
  32         uint64_t                   rx_ring_phys_addr;    /**< RX ring DMA address. */
  33         struct rte_mbuf            **sw_ring;            /**< address of RX software ring. */
  34         struct rte_mbuf            *pkt_first_seg;       /**< First segment of current packet. */
  35         struct rte_mbuf            *pkt_last_seg;        /**< Last segment of current packet. */
  36         uint16_t                   nb_cq_pages;          /**< number of RCQ pages. */
  37         uint16_t                   nb_rx_desc;           /**< number of RX descriptors. */
  38         uint16_t                   nb_rx_pages;          /**< number of RX pages. */
  39         uint16_t                   rx_bd_head;           /**< Index of current rx bd. */
  40         uint16_t                   rx_bd_tail;           /**< Index of last rx bd. */
  41         uint16_t                   rx_cq_head;           /**< Index of current rcq bd. */
  42         uint16_t                   rx_cq_tail;           /**< Index of last rcq bd. */
  43         uint16_t                   queue_id;             /**< RX queue index. */
  44         uint8_t                    port_id;              /**< Device port identifier. */
  45         struct bnx2x_softc           *sc;                  /**< Ptr to dev_private data. */
  46 };
  47
  48 /**
  49  * Structure associated with each TX queue.
  50  */
  51 struct bnx2x_tx_queue {
  52         /** TX ring virtual address. */
  53         union eth_tx_bd_types      *tx_ring;             /**< TX ring virtual address. */
  54         uint64_t                   tx_ring_phys_addr;    /**< TX ring DMA address. */
  55         struct rte_mbuf            **sw_ring;            /**< virtual address of SW ring. */
  56         uint16_t                   tx_pkt_tail;          /**< Index of current tx pkt. */
  57         uint16_t                   tx_pkt_head;          /**< Index of last pkt counted by txeof. */
  58         uint16_t                   tx_bd_tail;           /**< Index of current tx bd. */
  59         uint16_t                   tx_bd_head;           /**< Index of last bd counted by txeof. */
  60         uint16_t                   nb_tx_desc;           /**< number of TX descriptors. */
  61         uint16_t                   tx_free_thresh;       /**< minimum TX before freeing. */
  62         uint16_t                   nb_tx_avail;          /**< Number of TX descriptors available. */
  63         uint16_t                   nb_tx_pages;          /**< number of TX pages */
  64         uint16_t                   queue_id;             /**< TX queue index. */
  65         uint8_t                    port_id;              /**< Device port identifier. */
  66         struct bnx2x_softc           *sc;                  /**< Ptr to dev_private data */
  67 };
  68
  69 int bnx2x_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
  70                               uint16_t nb_rx_desc, unsigned int socket_id,
  71                               const struct rte_eth_rxconf *rx_conf,
  72                               struct rte_mempool *mb_pool);
  73
  74 int bnx2x_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
  75                               uint16_t nb_tx_desc, unsigned int socket_id,
  76                               const struct rte_eth_txconf *tx_conf);
  77
  78 void bnx2x_dev_rx_queue_release(void *rxq);
  79 void bnx2x_dev_tx_queue_release(void *txq);
  80 int bnx2x_dev_rx_init(struct rte_eth_dev *dev);
  81 void bnx2x_dev_clear_queues(struct rte_eth_dev *dev);
  82
  83 #endif /* _BNX2X_RXTX_H_ */