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 NFP_BPF_CAP_TYPE_CMSG_MULTI_ENT = 8,
28};
29
30struct nfp_bpf_cap_tlv_func {
31 __le32 func_id;
32 __le32 func_addr;
33};
34
35struct 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
45struct 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
62enum 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
73struct cmsg_reply_map_simple {
74 struct nfp_ccm_hdr hdr;
75 __be32 rc;
76};
77
78struct 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
87struct cmsg_reply_map_alloc_tbl {
88 struct cmsg_reply_map_simple reply_hdr;
89 __be32 tid;
90};
91
92struct cmsg_req_map_free_tbl {
93 struct nfp_ccm_hdr hdr;
94 __be32 tid;
95};
96
97struct cmsg_reply_map_free_tbl {
98 struct cmsg_reply_map_simple reply_hdr;
99 __be32 count;
100};
101
102struct cmsg_req_map_op {
103 struct nfp_ccm_hdr hdr;
104 __be32 tid;
105 __be32 count;
106 __be32 flags;
107 u8 data[];
108};
109
110struct cmsg_reply_map_op {
111 struct cmsg_reply_map_simple reply_hdr;
112 __be32 count;
113 __be32 resv;
114 u8 data[];
115};
116
117struct 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[];
124};
125#endif
126

source code of linux/drivers/net/ethernet/netronome/nfp/bpf/fw.h