LXR dpdk/drivers/net/enic/base/rq_enet

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 * Copyright 2008-2017 Cisco Systems, Inc.  All rights reserved.
   3 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4 */
   5
   6#ifndef _RQ_ENET_DESC_H_
   7#define _RQ_ENET_DESC_H_
   8
   9#include <rte_byteorder.h>
  10
  11/* Ethernet receive queue descriptor: 16B */
  12struct rq_enet_desc {
  13        uint64_t address;
  14        uint16_t length_type;
  15        uint8_t reserved[6];
  16};
  17
  18enum rq_enet_type_types {
  19        RQ_ENET_TYPE_ONLY_SOP = 0,
  20        RQ_ENET_TYPE_NOT_SOP = 1,
  21        RQ_ENET_TYPE_RESV2 = 2,
  22        RQ_ENET_TYPE_RESV3 = 3,
  23};
  24
  25#define RQ_ENET_ADDR_BITS               64
  26#define RQ_ENET_LEN_BITS                14
  27#define RQ_ENET_LEN_MASK                ((1 << RQ_ENET_LEN_BITS) - 1)
  28#define RQ_ENET_TYPE_BITS               2
  29#define RQ_ENET_TYPE_MASK               ((1 << RQ_ENET_TYPE_BITS) - 1)
  30
  31static inline void rq_enet_desc_enc(volatile struct rq_enet_desc *desc,
  32        uint64_t address, uint8_t type, uint16_t length)
  33{
  34        desc->address = rte_cpu_to_le_64(address);
  35        desc->length_type = rte_cpu_to_le_16((length & RQ_ENET_LEN_MASK) |
  36                ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
  37}
  38
  39static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
  40        uint64_t *address, uint8_t *type, uint16_t *length)
  41{
  42        *address = rte_le_to_cpu_64(desc->address);
  43        *length = rte_le_to_cpu_16(desc->length_type) & RQ_ENET_LEN_MASK;
  44        *type = (uint8_t)((rte_le_to_cpu_16(desc->length_type) >>
  45                RQ_ENET_LEN_BITS) & RQ_ENET_TYPE_MASK);
  46}
  47
  48#endif /* _RQ_ENET_DESC_H_ */
  49