ceph/src/dpdk/drivers/net/thunderx/nicvf_rxtx.h

   1 /*
   2  *   BSD LICENSE
   3  *
   4  *   Copyright (C) Cavium networks Ltd. 2016.
   5  *
   6  *   Redistribution and use in source and binary forms, with or without
   7  *   modification, are permitted provided that the following conditions
   8  *   are met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above copyright
  13  *       notice, this list of conditions and the following disclaimer in
  14  *       the documentation and/or other materials provided with the
  15  *       distribution.
  16  *     * Neither the name of Cavium networks nor the names of its
  17  *       contributors may be used to endorse or promote products derived
  18  *       from this software without specific prior written permission.
  19  *
  20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #ifndef __THUNDERX_NICVF_RXTX_H__
  34 #define __THUNDERX_NICVF_RXTX_H__
  35
  36 #include <rte_byteorder.h>
  37 #include <rte_ethdev.h>
  38
  39 #define NICVF_TX_OFFLOAD_MASK (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK)
  40
  41 #ifndef __hot
  42 #define __hot   __attribute__((hot))
  43 #endif
  44
  45 #if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
  46 static inline uint16_t __attribute__((const))
  47 nicvf_frag_num(uint16_t i)
  48 {
  49         return (i & ~3) + 3 - (i & 3);
  50 }
  51
  52 static inline void __hot
  53 fill_sq_desc_gather(union sq_entry_t *entry, struct rte_mbuf *pkt)
  54 {
  55         /* Local variable sqe to avoid read from sq desc memory*/
  56         union sq_entry_t sqe;
  57
  58         /* Fill the SQ gather entry */
  59         sqe.buff[0] = 0; sqe.buff[1] = 0;
  60         sqe.gather.subdesc_type = SQ_DESC_TYPE_GATHER;
  61         sqe.gather.ld_type = NIC_SEND_LD_TYPE_E_LDT;
  62         sqe.gather.size = pkt->data_len;
  63         sqe.gather.addr = rte_mbuf_data_dma_addr(pkt);
  64
  65         entry->buff[0] = sqe.buff[0];
  66         entry->buff[1] = sqe.buff[1];
  67 }
  68
  69 #else
  70
  71 static inline uint16_t __attribute__((const))
  72 nicvf_frag_num(uint16_t i)
  73 {
  74         return i;
  75 }
  76
  77 static inline void __hot
  78 fill_sq_desc_gather(union sq_entry_t *entry, struct rte_mbuf *pkt)
  79 {
  80         entry->buff[0] = (uint64_t)SQ_DESC_TYPE_GATHER << 60 |
  81                          (uint64_t)NIC_SEND_LD_TYPE_E_LDT << 58 |
  82                          pkt->data_len;
  83         entry->buff[1] = rte_mbuf_data_dma_addr(pkt);
  84 }
  85 #endif
  86
  87 uint32_t nicvf_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_idx);
  88 uint32_t nicvf_dev_rbdr_refill(struct rte_eth_dev *dev, uint16_t queue_idx);
  89
  90 uint16_t nicvf_recv_pkts(void *rxq, struct rte_mbuf **rx_pkts, uint16_t pkts);
  91 uint16_t nicvf_recv_pkts_multiseg(void *rx_queue, struct rte_mbuf **rx_pkts,
  92                                   uint16_t nb_pkts);
  93
  94 uint16_t nicvf_xmit_pkts(void *txq, struct rte_mbuf **tx_pkts, uint16_t pkts);
  95 uint16_t nicvf_xmit_pkts_multiseg(void *txq, struct rte_mbuf **tx_pkts,
  96                                   uint16_t pkts);
  97
  98 void nicvf_single_pool_free_xmited_buffers(struct nicvf_txq *sq);
  99 void nicvf_multi_pool_free_xmited_buffers(struct nicvf_txq *sq);
 100
 101 #endif /* __THUNDERX_NICVF_RXTX_H__  */