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net: qualcomm: rmnet: Move common struct definitions to include 

Create if_rmnet.h and move the rmnet MAP packet structs to this
common include file. To account for portablity, add little and
big endian bitfield definitions similar to the ip & tcp headers.

The definitions in the headers can now be re-used by the
upcoming ipa driver series as well as qmi_wwan.

Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
alistair/sunxi64-5.4-dsi
Subash Abhinov Kasiviswanathan 2019-05-22 14:21:07 -06:00 committed by David S. Miller
parent 16fa1cf1ed
commit 9395da4efb
2 changed files with 56 additions and 24 deletions
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25
drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
View File

@ -12,6 +12,7 @@
#ifndef _RMNET_MAP_H_
#define _RMNET_MAP_H_
#include <linux/if_rmnet.h>
struct rmnet_map_control_command {
u8 command_name;
@ -39,30 +40,6 @@ enum rmnet_map_commands {
RMNET_MAP_COMMAND_ENUM_LENGTH
};
struct rmnet_map_header {
u8 pad_len:6;
u8 reserved_bit:1;
u8 cd_bit:1;
u8 mux_id;
__be16 pkt_len;
} __aligned(1);
struct rmnet_map_dl_csum_trailer {
u8 reserved1;
u8 valid:1;
u8 reserved2:7;
u16 csum_start_offset;
u16 csum_length;
__be16 csum_value;
} __aligned(1);
struct rmnet_map_ul_csum_header {
__be16 csum_start_offset;
u16 csum_insert_offset:14;
u16 udp_ip4_ind:1;
u16 csum_enabled:1;
} __aligned(1);
#define RMNET_MAP_GET_MUX_ID(Y) (((struct rmnet_map_header *) \
(Y)->data)->mux_id)
#define RMNET_MAP_GET_CD_BIT(Y) (((struct rmnet_map_header *) \

55
include/linux/if_rmnet.h 100644
View File

@ -0,0 +1,55 @@
/* 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 {
#if defined(__LITTLE_ENDIAN_BITFIELD)
u8 pad_len:6;
u8 reserved_bit:1;
u8 cd_bit:1;
#elif defined (__BIG_ENDIAN_BITFIELD)
u8 cd_bit:1;
u8 reserved_bit:1;
u8 pad_len:6;
#else
#error "Please fix <asm/byteorder.h>"
#endif
u8 mux_id;
__be16 pkt_len;
} __aligned(1);
struct rmnet_map_dl_csum_trailer {
u8 reserved1;
#if defined(__LITTLE_ENDIAN_BITFIELD)
u8 valid:1;
u8 reserved2:7;
#elif defined (__BIG_ENDIAN_BITFIELD)
u8 reserved2:7;
u8 valid:1;
#else
#error "Please fix <asm/byteorder.h>"
#endif
u16 csum_start_offset;
u16 csum_length;
__be16 csum_value;
} __aligned(1);
struct rmnet_map_ul_csum_header {
__be16 csum_start_offset;
#if defined(__LITTLE_ENDIAN_BITFIELD)
u16 csum_insert_offset:14;
u16 udp_ip4_ind:1;
u16 csum_enabled:1;
#elif defined (__BIG_ENDIAN_BITFIELD)
u16 csum_enabled:1;
u16 udp_ip4_ind:1;
u16 csum_insert_offset:14;
#else
#error "Please fix <asm/byteorder.h>"
#endif
} __aligned(1);
#endif /* !(_LINUX_IF_RMNET_H_) */