49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only
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* Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
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*/
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#ifndef _LINUX_IF_RMNET_H_
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#define _LINUX_IF_RMNET_H_
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struct rmnet_map_header {
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u8 flags; /* MAP_CMD_FLAG, MAP_PAD_LEN_MASK */
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u8 mux_id;
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__be16 pkt_len; /* Length of packet, including pad */
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} __aligned(1);
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/* rmnet_map_header flags field:
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* PAD_LEN: number of pad bytes following packet data
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* CMD: 1 = packet contains a MAP command; 0 = packet contains data
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*/
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#define MAP_PAD_LEN_MASK GENMASK(5, 0)
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#define MAP_CMD_FLAG BIT(7)
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struct rmnet_map_dl_csum_trailer {
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u8 reserved1;
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u8 flags; /* MAP_CSUM_DL_VALID_FLAG */
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__be16 csum_start_offset;
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__be16 csum_length;
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__be16 csum_value;
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} __aligned(1);
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/* rmnet_map_dl_csum_trailer flags field:
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* VALID: 1 = checksum and length valid; 0 = ignore them
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*/
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#define MAP_CSUM_DL_VALID_FLAG BIT(0)
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struct rmnet_map_ul_csum_header {
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__be16 csum_start_offset;
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__be16 csum_info; /* MAP_CSUM_UL_* */
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} __aligned(1);
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/* csum_info field:
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* OFFSET: where (offset in bytes) to insert computed checksum
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* UDP: 1 = UDP checksum (zero checkum means no checksum)
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* ENABLED: 1 = checksum computation requested
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*/
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#define MAP_CSUM_UL_OFFSET_MASK GENMASK(13, 0)
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#define MAP_CSUM_UL_UDP_FLAG BIT(14)
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#define MAP_CSUM_UL_ENABLED_FLAG BIT(15)
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#endif /* !(_LINUX_IF_RMNET_H_) */
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