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1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.02/* Copyright (c) 2017-2019 Mellanox Technologies. All rights reserved */3 4#define pr_fmt(fmt) "MFA2: " fmt5 6#include "mlxfw_mfa2_tlv_multi.h"7#include <uapi/linux/netlink.h>8 9#define MLXFW_MFA2_TLV_TOTAL_SIZE(tlv) \10 NLA_ALIGN(sizeof(*(tlv)) + be16_to_cpu((tlv)->len))11 12const struct mlxfw_mfa2_tlv *13mlxfw_mfa2_tlv_multi_child(const struct mlxfw_mfa2_file *mfa2_file,14 const struct mlxfw_mfa2_tlv_multi *multi)15{16 size_t multi_len;17 18 multi_len = NLA_ALIGN(sizeof(struct mlxfw_mfa2_tlv_multi));19 return mlxfw_mfa2_tlv_get(mfa2_file, (void *) multi + multi_len);20}21 22const struct mlxfw_mfa2_tlv *23mlxfw_mfa2_tlv_next(const struct mlxfw_mfa2_file *mfa2_file,24 const struct mlxfw_mfa2_tlv *tlv)25{26 const struct mlxfw_mfa2_tlv_multi *multi;27 u16 tlv_len;28 void *next;29 30 tlv_len = MLXFW_MFA2_TLV_TOTAL_SIZE(tlv);31 32 if (tlv->type == MLXFW_MFA2_TLV_MULTI_PART) {33 multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, tlv);34 if (!multi)35 return NULL;36 tlv_len = NLA_ALIGN(tlv_len + be16_to_cpu(multi->total_len));37 }38 39 next = (void *) tlv + tlv_len;40 return mlxfw_mfa2_tlv_get(mfa2_file, next);41}42 43const struct mlxfw_mfa2_tlv *44mlxfw_mfa2_tlv_advance(const struct mlxfw_mfa2_file *mfa2_file,45 const struct mlxfw_mfa2_tlv *from_tlv, u16 count)46{47 const struct mlxfw_mfa2_tlv *tlv;48 u16 idx;49 50 mlxfw_mfa2_tlv_foreach(mfa2_file, tlv, idx, from_tlv, count)51 if (!tlv)52 return NULL;53 return tlv;54}55 56const struct mlxfw_mfa2_tlv *57mlxfw_mfa2_tlv_multi_child_find(const struct mlxfw_mfa2_file *mfa2_file,58 const struct mlxfw_mfa2_tlv_multi *multi,59 enum mlxfw_mfa2_tlv_type type, u16 index)60{61 const struct mlxfw_mfa2_tlv *tlv;62 u16 skip = 0;63 u16 idx;64 65 mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {66 if (!tlv) {67 pr_err("TLV parsing error\n");68 return NULL;69 }70 if (tlv->type == type)71 if (skip++ == index)72 return tlv;73 }74 return NULL;75}76 77int mlxfw_mfa2_tlv_multi_child_count(const struct mlxfw_mfa2_file *mfa2_file,78 const struct mlxfw_mfa2_tlv_multi *multi,79 enum mlxfw_mfa2_tlv_type type,80 u16 *p_count)81{82 const struct mlxfw_mfa2_tlv *tlv;83 u16 count = 0;84 u16 idx;85 86 mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {87 if (!tlv) {88 pr_err("TLV parsing error\n");89 return -EINVAL;90 }91 92 if (tlv->type == type)93 count++;94 }95 *p_count = count;96 return 0;97}98