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 19 enum 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 NFP_BPF_CAP_TYPE_CMSG_MULTI_ENT = 8, 28 }; 29 30 struct nfp_bpf_cap_tlv_func { 31 __le32 func_id; 32 __le32 func_addr; 33 }; 34 35 struct nfp_bpf_cap_tlv_adjust_head { 36 __le32 flags; 37 __le32 off_min; 38 __le32 off_max; 39 __le32 guaranteed_sub; 40 __le32 guaranteed_add; 41 }; 42 43 #define NFP_BPF_ADJUST_HEAD_NO_META BIT(0) 44 45 struct nfp_bpf_cap_tlv_maps { 46 __le32 types; 47 __le32 max_maps; 48 __le32 max_elems; 49 __le32 max_key_sz; 50 __le32 max_val_sz; 51 __le32 max_elem_sz; 52 }; 53 54 /* 55 * Types defined for map related control messages 56 */ 57 58 /* BPF ABIv2 fixed-length control message fields */ 59 #define CMSG_MAP_KEY_LW 16 60 #define CMSG_MAP_VALUE_LW 16 61 62 enum nfp_bpf_cmsg_status { 63 CMSG_RC_SUCCESS = 0, 64 CMSG_RC_ERR_MAP_FD = 1, 65 CMSG_RC_ERR_MAP_NOENT = 2, 66 CMSG_RC_ERR_MAP_ERR = 3, 67 CMSG_RC_ERR_MAP_PARSE = 4, 68 CMSG_RC_ERR_MAP_EXIST = 5, 69 CMSG_RC_ERR_MAP_NOMEM = 6, 70 CMSG_RC_ERR_MAP_E2BIG = 7, 71 }; 72 73 struct cmsg_reply_map_simple { 74 struct nfp_ccm_hdr hdr; 75 __be32 rc; 76 }; 77 78 struct cmsg_req_map_alloc_tbl { 79 struct nfp_ccm_hdr hdr; 80 __be32 key_size; /* in bytes */ 81 __be32 value_size; /* in bytes */ 82 __be32 max_entries; 83 __be32 map_type; 84 __be32 map_flags; /* reserved */ 85 }; 86 87 struct cmsg_reply_map_alloc_tbl { 88 struct cmsg_reply_map_simple reply_hdr; 89 __be32 tid; 90 }; 91 92 struct cmsg_req_map_free_tbl { 93 struct nfp_ccm_hdr hdr; 94 __be32 tid; 95 }; 96 97 struct cmsg_reply_map_free_tbl { 98 struct cmsg_reply_map_simple reply_hdr; 99 __be32 count; 100 }; 101 102 struct cmsg_req_map_op { 103 struct nfp_ccm_hdr hdr; 104 __be32 tid; 105 __be32 count; 106 __be32 flags; 107 u8 data[0]; 108 }; 109 110 struct cmsg_reply_map_op { 111 struct cmsg_reply_map_simple reply_hdr; 112 __be32 count; 113 __be32 resv; 114 u8 data[0]; 115 }; 116 117 struct cmsg_bpf_event { 118 struct nfp_ccm_hdr hdr; 119 __be32 cpu_id; 120 __be64 map_ptr; 121 __be32 data_size; 122 __be32 pkt_size; 123 u8 data[0]; 124 }; 125 #endif 126