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 }; 28 29 struct nfp_bpf_cap_tlv_func { 30 __le32 func_id; 31 __le32 func_addr; 32 }; 33 34 struct 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 44 struct 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 61 enum 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 72 struct cmsg_reply_map_simple { 73 struct nfp_ccm_hdr hdr; 74 __be32 rc; 75 }; 76 77 struct 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 86 struct cmsg_reply_map_alloc_tbl { 87 struct cmsg_reply_map_simple reply_hdr; 88 __be32 tid; 89 }; 90 91 struct cmsg_req_map_free_tbl { 92 struct nfp_ccm_hdr hdr; 93 __be32 tid; 94 }; 95 96 struct cmsg_reply_map_free_tbl { 97 struct cmsg_reply_map_simple reply_hdr; 98 __be32 count; 99 }; 100 101 struct cmsg_req_map_op { 102 struct nfp_ccm_hdr hdr; 103 __be32 tid; 104 __be32 count; 105 __be32 flags; 106 u8 data[0]; 107 }; 108 109 struct cmsg_reply_map_op { 110 struct cmsg_reply_map_simple reply_hdr; 111 __be32 count; 112 __be32 resv; 113 u8 data[0]; 114 }; 115 116 struct 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