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