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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* drivers/net/ethernet/rocker/rocker_tlv.c - Rocker switch device driver
* Copyright (c) 2014-2016 Jiri Pirko <jiri@mellanox.com>
* Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
*/
#include <linux/types.h>
#include <linux/string.h>
#include <linux/errno.h>
#include "rocker_hw.h"
#include "rocker_tlv.h"
void rocker_tlv_parse(const struct rocker_tlv **tb, int maxtype,
const char *buf, int buf_len)
{
const struct rocker_tlv *tlv;
const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
int rem;
memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
rocker_tlv_for_each(tlv, head, buf_len, rem) {
u32 type = rocker_tlv_type(tlv);
if (type > 0 && type <= maxtype)
tb[type] = tlv;
}
}
int rocker_tlv_put(struct rocker_desc_info *desc_info,
int attrtype, int attrlen, const void *data)
{
int tail_room = desc_info->data_size - desc_info->tlv_size;
int total_size = rocker_tlv_total_size(attrlen);
struct rocker_tlv *tlv;
if (unlikely(tail_room < total_size))
return -EMSGSIZE;
tlv = rocker_tlv_start(desc_info);
desc_info->tlv_size += total_size;
tlv->type = attrtype;
tlv->len = rocker_tlv_attr_size(attrlen);
memcpy(rocker_tlv_data(tlv), data, attrlen);
memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
return 0;
}
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