LXR dpdk/drivers/net/ipn3ke/ipn3ke

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 * Copyright(c) 2019 Intel Corporation
   3 */
   4
   5#ifndef _IPN3KE_FLOW_H_
   6#define _IPN3KE_FLOW_H_
   7
   8/**
   9 * Expand the length to DWORD alignment with 'Unused' field.
  10 *
  11 * FLOW KEY:
  12 *  | Unused |Ruler id (id)  | Key1 Key2 … (data) |
  13 *  |--------+---------------+--------------------|
  14 *  | 17bits |    3 bits     |   Total 108 bits   |
  15 * MSB                 --->                      LSB
  16 *
  17 * Note: And the MSb of key data is filled to 0 when it is less
  18 *       than 108 bit.
  19 */
  20#define IPN3KE_FLOW_KEY_UNUSED_BITS  17
  21#define IPN3KE_FLOW_KEY_ID_BITS      3
  22#define IPN3KE_FLOW_KEY_DATA_BITS    108
  23
  24#define IPN3KE_FLOW_KEY_TOTAL_BITS \
  25                (IPN3KE_FLOW_KEY_UNUSED_BITS + \
  26                IPN3KE_FLOW_KEY_ID_BITS + \
  27                IPN3KE_FLOW_KEY_DATA_BITS)
  28
  29#define IPN3KE_FLOW_KEY_ID_OFFSET \
  30                (IPN3KE_FLOW_KEY_UNUSED_BITS)
  31
  32#define IPN3KE_FLOW_KEY_DATA_OFFSET \
  33                (IPN3KE_FLOW_KEY_ID_OFFSET + IPN3KE_FLOW_KEY_ID_BITS)
  34
  35/**
  36 * Expand the length to DWORD alignment with 'Unused' field.
  37 *
  38 * FLOW RESULT:
  39 *  |  Unused | enable (acl) |    uid       |
  40 *  |---------+--------------+--------------|
  41 *  | 15 bits |    1 bit     |   16 bits    |
  42 * MSB              --->                   LSB
  43 */
  44
  45#define IPN3KE_FLOW_RESULT_UNUSED_BITS 15
  46#define IPN3KE_FLOW_RESULT_ACL_BITS    1
  47#define IPN3KE_FLOW_RESULT_UID_BITS    16
  48
  49#define IPN3KE_FLOW_RESULT_TOTAL_BITS \
  50                (IPN3KE_FLOW_RESULT_UNUSED_BITS + \
  51                IPN3KE_FLOW_RESULT_ACL_BITS + \
  52                IPN3KE_FLOW_RESULT_UID_BITS)
  53
  54#define IPN3KE_FLOW_RESULT_ACL_OFFSET \
  55                (IPN3KE_FLOW_RESULT_UNUSED_BITS)
  56
  57#define IPN3KE_FLOW_RESULT_UID_OFFSET \
  58                (IPN3KE_FLOW_RESULT_ACL_OFFSET + IPN3KE_FLOW_RESULT_ACL_BITS)
  59
  60#define IPN3KE_FLOW_RESULT_UID_MAX \
  61                ((1UL << IPN3KE_FLOW_RESULT_UID_BITS) - 1)
  62
  63#ifndef BITS_PER_BYTE
  64#define BITS_PER_BYTE    8
  65#endif
  66#define BITS_TO_BYTES(bits) \
  67        (((bits) + BITS_PER_BYTE - 1) / BITS_PER_BYTE)
  68
  69struct ipn3ke_flow_rule {
  70        uint8_t key[BITS_TO_BYTES(IPN3KE_FLOW_KEY_TOTAL_BITS)];
  71        uint8_t result[BITS_TO_BYTES(IPN3KE_FLOW_RESULT_TOTAL_BITS)];
  72};
  73
  74struct rte_flow {
  75        TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
  76
  77        struct ipn3ke_flow_rule rule;
  78};
  79
  80TAILQ_HEAD(ipn3ke_flow_list, rte_flow);
  81
  82static inline uint16_t ipn3ke_swap16(uint16_t x)
  83{
  84        return ((x & 0xff) << 8) | ((x >> 8) & 0xff);
  85}
  86
  87static inline uint32_t ipn3ke_swap32(uint32_t x)
  88{
  89        uint32_t high, low;
  90        uint32_t high1, low1;
  91
  92        high = (x >> 16) & 0xffff;
  93        low = x & 0xffff;
  94        high1 = ipn3ke_swap16(low);
  95        high1 = high1 << 16;
  96        low1 = ipn3ke_swap16(high);
  97        low1 = low1 & 0xffff;
  98
  99        return high1 | low1;
 100}
 101
 102extern const struct rte_flow_ops ipn3ke_flow_ops;
 103
 104int ipn3ke_flow_init(void *dev);
 105
 106#endif /* _IPN3KE_FLOW_H_ */
 107