/* 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 { … } __aligned(…); /* 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 … #define MAP_NEXT_HEADER_FLAG … #define MAP_CMD_FLAG … struct rmnet_map_dl_csum_trailer { … } __aligned(…); /* rmnet_map_dl_csum_trailer flags field: * VALID: 1 = checksum and length valid; 0 = ignore them */ #define MAP_CSUM_DL_VALID_FLAG … struct rmnet_map_ul_csum_header { … } __aligned(…); /* 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 … #define MAP_CSUM_UL_UDP_FLAG … #define MAP_CSUM_UL_ENABLED_FLAG … /* MAP CSUM headers */ struct rmnet_map_v5_csum_header { … } __aligned(…); /* 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 … #define MAPV5_HDRINFO_HDR_TYPE_FMASK … #define MAPV5_CSUMINFO_VALID_FLAG … #define RMNET_MAP_HEADER_TYPE_CSUM_OFFLOAD … #endif /* !(_LINUX_IF_RMNET_H_) */
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