mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git
synced 2026-04-18 06:34:27 -04:00
cc1b21ba62
Replace the use of C bit-fields in the rmnet_map_dl_csum_trailer structure with a single one-byte field, using constant field masks to encode or get at embedded values. Signed-off-by: Alex Elder <elder@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Alexander Duyck <alexanderduyck@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
/* 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;
|
|
#if defined(__LITTLE_ENDIAN_BITFIELD)
|
|
u16 csum_insert_offset:14;
|
|
u16 udp_ind:1;
|
|
u16 csum_enabled:1;
|
|
#elif defined (__BIG_ENDIAN_BITFIELD)
|
|
u16 csum_enabled:1;
|
|
u16 udp_ind:1;
|
|
u16 csum_insert_offset:14;
|
|
#else
|
|
#error "Please fix <asm/byteorder.h>"
|
|
#endif
|
|
} __aligned(1);
|
|
|
|
#endif /* !(_LINUX_IF_RMNET_H_) */
|