2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2017-2019 Mellanox Technologies.
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8 * modification, are permitted provided that the following conditions
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34 #ifndef _MLXFW_MFA2_TLV_H
35 #define _MLXFW_MFA2_TLV_H
37 #include <linux/kernel.h>
38 #include "mlxfw_mfa2_file.h"
40 struct mlxfw_mfa2_tlv {
47 static inline const struct mlxfw_mfa2_tlv *
48 mlxfw_mfa2_tlv_get(const struct mlxfw_mfa2_file *mfa2_file, const u8 *ptr)
50 if (!mlxfw_mfa2_valid_ptr(mfa2_file, ptr) ||
51 !mlxfw_mfa2_valid_ptr(mfa2_file, ptr + sizeof(struct mlxfw_mfa2_tlv)))
53 return (const struct mlxfw_mfa2_tlv *) ptr;
56 static inline const void *
57 mlxfw_mfa2_tlv_payload_get(const struct mlxfw_mfa2_file *mfa2_file,
58 const struct mlxfw_mfa2_tlv *tlv, u8 payload_type,
59 size_t payload_size, bool varsize)
63 tlv_top = (const u8 *) tlv + be16_to_cpu(tlv->len) - 1;
64 if (!mlxfw_mfa2_valid_ptr(mfa2_file, (const u8 *) tlv) ||
65 !mlxfw_mfa2_valid_ptr(mfa2_file, tlv_top))
67 if (tlv->type != payload_type)
69 if (varsize && (be16_to_cpu(tlv->len) < payload_size))
71 if (!varsize && (be16_to_cpu(tlv->len) != payload_size))
77 #define MLXFW_MFA2_TLV(name, payload_type, tlv_type) \
78 static inline const payload_type * \
79 mlxfw_mfa2_tlv_ ## name ## _get(const struct mlxfw_mfa2_file *mfa2_file, \
80 const struct mlxfw_mfa2_tlv *tlv) \
82 return mlxfw_mfa2_tlv_payload_get(mfa2_file, tlv, \
83 tlv_type, sizeof(payload_type), \
87 #define MLXFW_MFA2_TLV_VARSIZE(name, payload_type, tlv_type) \
88 static inline const payload_type * \
89 mlxfw_mfa2_tlv_ ## name ## _get(const struct mlxfw_mfa2_file *mfa2_file, \
90 const struct mlxfw_mfa2_tlv *tlv) \
92 return mlxfw_mfa2_tlv_payload_get(mfa2_file, tlv, \
93 tlv_type, sizeof(payload_type), \