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/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/types.h>
#include <linux/spinlock.h>
#include <net/rmnet_config.h>
#ifndef _RMNET_MAP_H_
#define _RMNET_MAP_H_
struct rmnet_map_control_command_s {
u8 command_name;
#ifndef RMNET_USE_BIG_ENDIAN_STRUCTS
u8 cmd_type:2;
u8 reserved:6;
#else
u8 reserved:6;
u8 cmd_type:2;
#endif /* RMNET_USE_BIG_ENDIAN_STRUCTS */
u16 reserved2;
u32 transaction_id;
union {
u8 data[65528];
struct {
#ifndef RMNET_USE_BIG_ENDIAN_STRUCTS
u16 ip_family:2;
u16 reserved:14;
#else
u16 reserved:14;
u16 ip_family:2;
#endif /* RMNET_USE_BIG_ENDIAN_STRUCTS */
u16 flow_control_seq_num;
u32 qos_id;
} flow_control;
};
} __aligned(1);
struct rmnet_map_dl_checksum_trailer_s {
unsigned char reserved_h;
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned char valid:1;
unsigned char reserved_l:7;
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned char reserved_l:7;
unsigned char valid:1;
#else
#error "Please fix <asm/byteorder.h>"
#endif
unsigned short checksum_start_offset;
unsigned short checksum_length;
unsigned short checksum_value;
} __aligned(1);
struct rmnet_map_ul_checksum_header_s {
unsigned short checksum_start_offset;
#if defined(__LITTLE_ENDIAN_BITFIELD)
unsigned short checksum_insert_offset:14;
unsigned short udp_ip4_ind:1;
unsigned short cks_en:1;
#elif defined(__BIG_ENDIAN_BITFIELD)
unsigned short cks_en:1;
unsigned short udp_ip4_ind:1;
unsigned short checksum_insert_offset:14;
#else
#error "Please fix <asm/byteorder.h>"
#endif
} __aligned(1);
enum rmnet_map_results_e {
RMNET_MAP_SUCCESS,
RMNET_MAP_CONSUMED,
RMNET_MAP_GENERAL_FAILURE,
RMNET_MAP_NOT_ENABLED,
RMNET_MAP_FAILED_AGGREGATION,
RMNET_MAP_FAILED_MUX
};
enum rmnet_map_mux_errors_e {
RMNET_MAP_MUX_SUCCESS,
RMNET_MAP_MUX_INVALID_MUX_ID,
RMNET_MAP_MUX_INVALID_PAD_LENGTH,
RMNET_MAP_MUX_INVALID_PKT_LENGTH,
/* This should always be the last element */
RMNET_MAP_MUX_ENUM_LENGTH
};
enum rmnet_map_checksum_errors_e {
RMNET_MAP_CHECKSUM_OK,
RMNET_MAP_CHECKSUM_VALID_FLAG_NOT_SET,
RMNET_MAP_CHECKSUM_VALIDATION_FAILED,
RMNET_MAP_CHECKSUM_ERR_UNKNOWN,
RMNET_MAP_CHECKSUM_ERR_NOT_DATA_PACKET,
RMNET_MAP_CHECKSUM_ERR_BAD_BUFFER,
RMNET_MAP_CHECKSUM_ERR_UNKNOWN_IP_VERSION,
RMNET_MAP_CHECKSUM_ERR_UNKNOWN_TRANSPORT,
RMNET_MAP_CHECKSUM_FRAGMENTED_PACKET,
RMNET_MAP_CHECKSUM_SKIPPED,
RMNET_MAP_CHECKSUM_SW,
/* This should always be the last element */
RMNET_MAP_CHECKSUM_ENUM_LENGTH
};
enum rmnet_map_commands_e {
RMNET_MAP_COMMAND_NONE,
RMNET_MAP_COMMAND_FLOW_DISABLE,
RMNET_MAP_COMMAND_FLOW_ENABLE,
/* These should always be the last 2 elements */
RMNET_MAP_COMMAND_UNKNOWN,
RMNET_MAP_COMMAND_ENUM_LENGTH
};
enum rmnet_map_agg_state_e {
RMNET_MAP_AGG_IDLE,
RMNET_MAP_TXFER_SCHEDULED
};
#define RMNET_MAP_COMMAND_REQUEST 0
#define RMNET_MAP_COMMAND_ACK 1
#define RMNET_MAP_COMMAND_UNSUPPORTED 2
#define RMNET_MAP_COMMAND_INVALID 3
#define RMNET_MAP_NO_PAD_BYTES 0
#define RMNET_MAP_ADD_PAD_BYTES 1
uint8_t rmnet_map_demultiplex(struct sk_buff *skb);
struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
struct rmnet_phys_ep_config *config);
struct rmnet_map_header_s *rmnet_map_add_map_header(struct sk_buff *skb,
int hdrlen, int pad);
rx_handler_result_t rmnet_map_command(struct sk_buff *skb,
struct rmnet_phys_ep_config *config);
void rmnet_map_aggregate(struct sk_buff *skb,
struct rmnet_phys_ep_config *config);
int rmnet_map_checksum_downlink_packet(struct sk_buff *skb);
int rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
struct net_device *orig_dev,
u32 egress_data_format);
#endif /* _RMNET_MAP_H_ */