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// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
/* Copyright (c) 2017-2019 Mellanox Technologies. All rights reserved */
#define pr_fmt(fmt) "MFA2: " fmt
#include "mlxfw_mfa2_tlv_multi.h"
#include <uapi/linux/netlink.h>
#define MLXFW_MFA2_TLV_TOTAL_SIZE(tlv) \
NLA_ALIGN(sizeof(*(tlv)) + be16_to_cpu((tlv)->len))
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_multi_child(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi)
{
size_t multi_len;
multi_len = NLA_ALIGN(sizeof(struct mlxfw_mfa2_tlv_multi));
return mlxfw_mfa2_tlv_get(mfa2_file, (void *) multi + multi_len);
}
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_next(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *tlv)
{
const struct mlxfw_mfa2_tlv_multi *multi;
u16 tlv_len;
void *next;
tlv_len = MLXFW_MFA2_TLV_TOTAL_SIZE(tlv);
if (tlv->type == MLXFW_MFA2_TLV_MULTI_PART) {
multi = mlxfw_mfa2_tlv_multi_get(mfa2_file, tlv);
tlv_len = NLA_ALIGN(tlv_len + be16_to_cpu(multi->total_len));
}
next = (void *) tlv + tlv_len;
return mlxfw_mfa2_tlv_get(mfa2_file, next);
}
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_advance(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv *from_tlv, u16 count)
{
const struct mlxfw_mfa2_tlv *tlv;
u16 idx;
mlxfw_mfa2_tlv_foreach(mfa2_file, tlv, idx, from_tlv, count)
if (!tlv)
return NULL;
return tlv;
}
const struct mlxfw_mfa2_tlv *
mlxfw_mfa2_tlv_multi_child_find(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi,
enum mlxfw_mfa2_tlv_type type, u16 index)
{
const struct mlxfw_mfa2_tlv *tlv;
u16 skip = 0;
u16 idx;
mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {
if (!tlv) {
pr_err("TLV parsing error\n");
return NULL;
}
if (tlv->type == type)
if (skip++ == index)
return tlv;
}
return NULL;
}
int mlxfw_mfa2_tlv_multi_child_count(const struct mlxfw_mfa2_file *mfa2_file,
const struct mlxfw_mfa2_tlv_multi *multi,
enum mlxfw_mfa2_tlv_type type,
u16 *p_count)
{
const struct mlxfw_mfa2_tlv *tlv;
u16 count = 0;
u16 idx;
mlxfw_mfa2_tlv_multi_foreach(mfa2_file, tlv, idx, multi) {
if (!tlv) {
pr_err("TLV parsing error\n");
return -EINVAL;
}
if (tlv->type == type)
count++;
}
*p_count = count;
return 0;
}
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