[mirror_ubuntu-jammy-kernel.git] / include / linux / if_rmnet.h

/* 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_) */
Commit	Line	Data
9395da4e SAK	1	/* SPDX-License-Identifier: GPL-2.0-only
	2	* Copyright (c) 2013-2019, The Linux Foundation. All rights reserved.
	3	*/
	4
	5	#ifndef _LINUX_IF_RMNET_H_
	6	#define _LINUX_IF_RMNET_H_
	7
	8	struct rmnet_map_header {
16653c16 AE	9	u8 flags; /* MAP_CMD_FLAG, MAP_PAD_LEN_MASK */
	10	u8 mux_id;
	11	__be16 pkt_len; /* Length of packet, including pad */
9395da4e SAK	12	} __aligned(1);
9395da4e SAK	13
16653c16 AE	14	/* rmnet_map_header flags field:
	15	* PAD_LEN: number of pad bytes following packet data
	16	* CMD: 1 = packet contains a MAP command; 0 = packet contains data
	17	*/
	18	#define MAP_PAD_LEN_MASK GENMASK(5, 0)
	19	#define MAP_CMD_FLAG BIT(7)
	20
9395da4e	21	struct rmnet_map_dl_csum_trailer {
cc1b21ba AE	22	u8 reserved1;
cc1b21ba AE	23	u8 flags; /* MAP_CSUM_DL_VALID_FLAG */
45f3a13c AE	24	__be16 csum_start_offset;
45f3a13c AE	25	__be16 csum_length;
9395da4e SAK	26	__be16 csum_value;
	27	} __aligned(1);
	28
cc1b21ba AE	29	/* rmnet_map_dl_csum_trailer flags field:
	30	* VALID: 1 = checksum and length valid; 0 = ignore them
	31	*/
	32	#define MAP_CSUM_DL_VALID_FLAG BIT(0)
	33
9395da4e SAK	34	struct rmnet_map_ul_csum_header {
9395da4e SAK	35	__be16 csum_start_offset;
86ca860e	36	__be16 csum_info; /* MAP_CSUM_UL_* */
9395da4e SAK	37	} __aligned(1);
9395da4e SAK	38
86ca860e AE	39	/* csum_info field:
	40	* OFFSET: where (offset in bytes) to insert computed checksum
	41	* UDP: 1 = UDP checksum (zero checkum means no checksum)
	42	* ENABLED: 1 = checksum computation requested
	43	*/
	44	#define MAP_CSUM_UL_OFFSET_MASK GENMASK(13, 0)
	45	#define MAP_CSUM_UL_UDP_FLAG BIT(14)
	46	#define MAP_CSUM_UL_ENABLED_FLAG BIT(15)
	47
9395da4e	48	#endif /* !(_LINUX_IF_RMNET_H_) */