/* SPDX-License-Identifier: GPL-2.0-only * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved. */ #ifndef _LINUX_IF_RMNET_H_ #define _LINUX_IF_RMNET_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 */ #define MAP_PAD_LEN_MASK GENMASK(5, 0) #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; __be16 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) #endif /* !(_LINUX_IF_RMNET_H_) */