mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.1 KiB
74 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only |
|
* Copyright (c) 2013-2019, 2021 The Linux Foundation. All rights reserved. |
|
*/ |
|
|
|
#ifndef _LINUX_IF_RMNET_H_ |
|
#define _LINUX_IF_RMNET_H_ |
|
|
|
#include <linux/types.h> |
|
|
|
struct rmnet_map_header { |
|
u8 flags; /* MAP_CMD_FLAG, MAP_PAD_LEN_MASK */ |
|
u8 mux_id; |
|
__be16 pkt_len; /* Length of packet, including pad */ |
|
} __aligned(1); |
|
|
|
/* rmnet_map_header flags field: |
|
* PAD_LEN: number of pad bytes following packet data |
|
* CMD: 1 = packet contains a MAP command; 0 = packet contains data |
|
* NEXT_HEADER: 1 = packet contains V5 CSUM header 0 = no V5 CSUM header |
|
*/ |
|
#define MAP_PAD_LEN_MASK GENMASK(5, 0) |
|
#define MAP_NEXT_HEADER_FLAG BIT(6) |
|
#define MAP_CMD_FLAG BIT(7) |
|
|
|
struct rmnet_map_dl_csum_trailer { |
|
u8 reserved1; |
|
u8 flags; /* MAP_CSUM_DL_VALID_FLAG */ |
|
__be16 csum_start_offset; |
|
__be16 csum_length; |
|
__sum16 csum_value; |
|
} __aligned(1); |
|
|
|
/* rmnet_map_dl_csum_trailer flags field: |
|
* VALID: 1 = checksum and length valid; 0 = ignore them |
|
*/ |
|
#define MAP_CSUM_DL_VALID_FLAG BIT(0) |
|
|
|
struct rmnet_map_ul_csum_header { |
|
__be16 csum_start_offset; |
|
__be16 csum_info; /* MAP_CSUM_UL_* */ |
|
} __aligned(1); |
|
|
|
/* csum_info field: |
|
* OFFSET: where (offset in bytes) to insert computed checksum |
|
* UDP: 1 = UDP checksum (zero checkum means no checksum) |
|
* ENABLED: 1 = checksum computation requested |
|
*/ |
|
#define MAP_CSUM_UL_OFFSET_MASK GENMASK(13, 0) |
|
#define MAP_CSUM_UL_UDP_FLAG BIT(14) |
|
#define MAP_CSUM_UL_ENABLED_FLAG BIT(15) |
|
|
|
/* MAP CSUM headers */ |
|
struct rmnet_map_v5_csum_header { |
|
u8 header_info; |
|
u8 csum_info; |
|
__be16 reserved; |
|
} __aligned(1); |
|
|
|
/* v5 header_info field |
|
* NEXT_HEADER: represents whether there is any next header |
|
* HEADER_TYPE: represents the type of this header |
|
* |
|
* csum_info field |
|
* CSUM_VALID_OR_REQ: |
|
* 1 = for UL, checksum computation is requested. |
|
* 1 = for DL, validated the checksum and has found it valid |
|
*/ |
|
|
|
#define MAPV5_HDRINFO_NXT_HDR_FLAG BIT(0) |
|
#define MAPV5_HDRINFO_HDR_TYPE_FMASK GENMASK(7, 1) |
|
#define MAPV5_CSUMINFO_VALID_FLAG BIT(7) |
|
|
|
#define RMNET_MAP_HEADER_TYPE_CSUM_OFFLOAD 2 |
|
#endif /* !(_LINUX_IF_RMNET_H_) */
|
|
|