1 /* 2 * Copyright (C) 2017-2018 Netronome Systems, Inc. 3 * 4 * This software is dual licensed under the GNU General License Version 2, 5 * June 1991 as shown in the file COPYING in the top-level directory of this 6 * source tree or the BSD 2-Clause License provided below. You have the 7 * option to license this software under the complete terms of either license. 8 * 9 * The BSD 2-Clause License: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * 1. Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * 2. Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 */ 33 34 #ifndef NFP_BPF_FW_H 35 #define NFP_BPF_FW_H 1 36 37 #include <linux/bitops.h> 38 #include <linux/types.h> 39 40 /* Kernel's enum bpf_reg_type is not uABI so people may change it breaking 41 * our FW ABI. In that case we will do translation in the driver. 42 */ 43 #define NFP_BPF_SCALAR_VALUE 1 44 #define NFP_BPF_MAP_VALUE 4 45 #define NFP_BPF_STACK 6 46 #define NFP_BPF_PACKET_DATA 8 47 48 enum bpf_cap_tlv_type { 49 NFP_BPF_CAP_TYPE_FUNC = 1, 50 NFP_BPF_CAP_TYPE_ADJUST_HEAD = 2, 51 NFP_BPF_CAP_TYPE_MAPS = 3, 52 NFP_BPF_CAP_TYPE_RANDOM = 4, 53 NFP_BPF_CAP_TYPE_QUEUE_SELECT = 5, 54 }; 55 56 struct nfp_bpf_cap_tlv_func { 57 __le32 func_id; 58 __le32 func_addr; 59 }; 60 61 struct nfp_bpf_cap_tlv_adjust_head { 62 __le32 flags; 63 __le32 off_min; 64 __le32 off_max; 65 __le32 guaranteed_sub; 66 __le32 guaranteed_add; 67 }; 68 69 #define NFP_BPF_ADJUST_HEAD_NO_META BIT(0) 70 71 struct nfp_bpf_cap_tlv_maps { 72 __le32 types; 73 __le32 max_maps; 74 __le32 max_elems; 75 __le32 max_key_sz; 76 __le32 max_val_sz; 77 __le32 max_elem_sz; 78 }; 79 80 /* 81 * Types defined for map related control messages 82 */ 83 #define CMSG_MAP_ABI_VERSION 1 84 85 enum nfp_bpf_cmsg_type { 86 CMSG_TYPE_MAP_ALLOC = 1, 87 CMSG_TYPE_MAP_FREE = 2, 88 CMSG_TYPE_MAP_LOOKUP = 3, 89 CMSG_TYPE_MAP_UPDATE = 4, 90 CMSG_TYPE_MAP_DELETE = 5, 91 CMSG_TYPE_MAP_GETNEXT = 6, 92 CMSG_TYPE_MAP_GETFIRST = 7, 93 CMSG_TYPE_BPF_EVENT = 8, 94 __CMSG_TYPE_MAP_MAX, 95 }; 96 97 #define CMSG_TYPE_MAP_REPLY_BIT 7 98 #define __CMSG_REPLY(req) (BIT(CMSG_TYPE_MAP_REPLY_BIT) | (req)) 99 100 #define CMSG_MAP_KEY_LW 16 101 #define CMSG_MAP_VALUE_LW 16 102 103 enum nfp_bpf_cmsg_status { 104 CMSG_RC_SUCCESS = 0, 105 CMSG_RC_ERR_MAP_FD = 1, 106 CMSG_RC_ERR_MAP_NOENT = 2, 107 CMSG_RC_ERR_MAP_ERR = 3, 108 CMSG_RC_ERR_MAP_PARSE = 4, 109 CMSG_RC_ERR_MAP_EXIST = 5, 110 CMSG_RC_ERR_MAP_NOMEM = 6, 111 CMSG_RC_ERR_MAP_E2BIG = 7, 112 }; 113 114 struct cmsg_hdr { 115 u8 type; 116 u8 ver; 117 __be16 tag; 118 }; 119 120 struct cmsg_reply_map_simple { 121 struct cmsg_hdr hdr; 122 __be32 rc; 123 }; 124 125 struct cmsg_req_map_alloc_tbl { 126 struct cmsg_hdr hdr; 127 __be32 key_size; /* in bytes */ 128 __be32 value_size; /* in bytes */ 129 __be32 max_entries; 130 __be32 map_type; 131 __be32 map_flags; /* reserved */ 132 }; 133 134 struct cmsg_reply_map_alloc_tbl { 135 struct cmsg_reply_map_simple reply_hdr; 136 __be32 tid; 137 }; 138 139 struct cmsg_req_map_free_tbl { 140 struct cmsg_hdr hdr; 141 __be32 tid; 142 }; 143 144 struct cmsg_reply_map_free_tbl { 145 struct cmsg_reply_map_simple reply_hdr; 146 __be32 count; 147 }; 148 149 struct cmsg_key_value_pair { 150 __be32 key[CMSG_MAP_KEY_LW]; 151 __be32 value[CMSG_MAP_VALUE_LW]; 152 }; 153 154 struct cmsg_req_map_op { 155 struct cmsg_hdr hdr; 156 __be32 tid; 157 __be32 count; 158 __be32 flags; 159 struct cmsg_key_value_pair elem[0]; 160 }; 161 162 struct cmsg_reply_map_op { 163 struct cmsg_reply_map_simple reply_hdr; 164 __be32 count; 165 __be32 resv; 166 struct cmsg_key_value_pair elem[0]; 167 }; 168 169 struct cmsg_bpf_event { 170 struct cmsg_hdr hdr; 171 __be32 cpu_id; 172 __be64 map_ptr; 173 __be32 data_size; 174 __be32 pkt_size; 175 u8 data[0]; 176 }; 177 #endif 178