diff options
Diffstat (limited to 'include/linux/if_rmnet.h')
| -rw-r--r-- | include/linux/if_rmnet.h | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/include/linux/if_rmnet.h b/include/linux/if_rmnet.h index 4efb537f57f3..be17610a981e 100644 --- a/include/linux/if_rmnet.h +++ b/include/linux/if_rmnet.h @@ -1,5 +1,5 @@ /* SPDX-License-Identifier: GPL-2.0-only - * Copyright (c) 2013-2019, The Linux Foundation. All rights reserved. + * Copyright (c) 2013-2019, 2021 The Linux Foundation. All rights reserved. */ #ifndef _LINUX_IF_RMNET_H_ @@ -12,10 +12,12 @@ struct rmnet_map_header { } __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 + * 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 { @@ -45,4 +47,26 @@ struct rmnet_map_ul_csum_header { #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_) */ |