LXR linux/drivers/net/ethernet/netronome/nfp/bpf/fw.h

   1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
   2/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
   3
   4#ifndef NFP_BPF_FW_H
   5#define NFP_BPF_FW_H 1
   6
   7#include <linux/bitops.h>
   8#include <linux/types.h>
   9#include "../ccm.h"
  10
  11/* Kernel's enum bpf_reg_type is not uABI so people may change it breaking
  12 * our FW ABI.  In that case we will do translation in the driver.
  13 */
  14#define NFP_BPF_SCALAR_VALUE            1
  15#define NFP_BPF_MAP_VALUE               4
  16#define NFP_BPF_STACK                   6
  17#define NFP_BPF_PACKET_DATA             8
  18
  19enum bpf_cap_tlv_type {
  20        NFP_BPF_CAP_TYPE_FUNC           = 1,
  21        NFP_BPF_CAP_TYPE_ADJUST_HEAD    = 2,
  22        NFP_BPF_CAP_TYPE_MAPS           = 3,
  23        NFP_BPF_CAP_TYPE_RANDOM         = 4,
  24        NFP_BPF_CAP_TYPE_QUEUE_SELECT   = 5,
  25        NFP_BPF_CAP_TYPE_ADJUST_TAIL    = 6,
  26        NFP_BPF_CAP_TYPE_ABI_VERSION    = 7,
  27};
  28
  29struct nfp_bpf_cap_tlv_func {
  30        __le32 func_id;
  31        __le32 func_addr;
  32};
  33
  34struct nfp_bpf_cap_tlv_adjust_head {
  35        __le32 flags;
  36        __le32 off_min;
  37        __le32 off_max;
  38        __le32 guaranteed_sub;
  39        __le32 guaranteed_add;
  40};
  41
  42#define NFP_BPF_ADJUST_HEAD_NO_META     BIT(0)
  43
  44struct nfp_bpf_cap_tlv_maps {
  45        __le32 types;
  46        __le32 max_maps;
  47        __le32 max_elems;
  48        __le32 max_key_sz;
  49        __le32 max_val_sz;
  50        __le32 max_elem_sz;
  51};
  52
  53/*
  54 * Types defined for map related control messages
  55 */
  56
  57/* BPF ABIv2 fixed-length control message fields */
  58#define CMSG_MAP_KEY_LW                 16
  59#define CMSG_MAP_VALUE_LW               16
  60
  61enum nfp_bpf_cmsg_status {
  62        CMSG_RC_SUCCESS                 = 0,
  63        CMSG_RC_ERR_MAP_FD              = 1,
  64        CMSG_RC_ERR_MAP_NOENT           = 2,
  65        CMSG_RC_ERR_MAP_ERR             = 3,
  66        CMSG_RC_ERR_MAP_PARSE           = 4,
  67        CMSG_RC_ERR_MAP_EXIST           = 5,
  68        CMSG_RC_ERR_MAP_NOMEM           = 6,
  69        CMSG_RC_ERR_MAP_E2BIG           = 7,
  70};
  71
  72struct cmsg_reply_map_simple {
  73        struct nfp_ccm_hdr hdr;
  74        __be32 rc;
  75};
  76
  77struct cmsg_req_map_alloc_tbl {
  78        struct nfp_ccm_hdr hdr;
  79        __be32 key_size;                /* in bytes */
  80        __be32 value_size;              /* in bytes */
  81        __be32 max_entries;
  82        __be32 map_type;
  83        __be32 map_flags;               /* reserved */
  84};
  85
  86struct cmsg_reply_map_alloc_tbl {
  87        struct cmsg_reply_map_simple reply_hdr;
  88        __be32 tid;
  89};
  90
  91struct cmsg_req_map_free_tbl {
  92        struct nfp_ccm_hdr hdr;
  93        __be32 tid;
  94};
  95
  96struct cmsg_reply_map_free_tbl {
  97        struct cmsg_reply_map_simple reply_hdr;
  98        __be32 count;
  99};
 100
 101struct cmsg_req_map_op {
 102        struct nfp_ccm_hdr hdr;
 103        __be32 tid;
 104        __be32 count;
 105        __be32 flags;
 106        u8 data[0];
 107};
 108
 109struct cmsg_reply_map_op {
 110        struct cmsg_reply_map_simple reply_hdr;
 111        __be32 count;
 112        __be32 resv;
 113        u8 data[0];
 114};
 115
 116struct cmsg_bpf_event {
 117        struct nfp_ccm_hdr hdr;
 118        __be32 cpu_id;
 119        __be64 map_ptr;
 120        __be32 data_size;
 121        __be32 pkt_size;
 122        u8 data[0];
 123};
 124#endif
 125