mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 07:35:12 +07:00
a7cf3d24ee
The udp_ip4_ind bit is set only for IPv4 UDP non-fragmented packets
so that the hardware can flip the checksum to 0xFFFF if the computed
checksum is 0 per RFC768.
However, this bit had to be set for IPv6 UDP non fragmented packets
as well per hardware requirements. Otherwise, IPv6 UDP packets
with computed checksum as 0 were transmitted by hardware and were
dropped in the network.
In addition to setting this bit for IPv6 UDP, the field is also
appropriately renamed to udp_ind as part of this change.
Fixes: 5eb5f8608e ("net: qualcomm: rmnet: Add support for TX checksum offload")
Cc: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
56 lines
1.1 KiB
C
56 lines
1.1 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 {
|
|
#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_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_) */
|