150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
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/*
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* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#ifndef _RMNET_MAP_H_
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#define _RMNET_MAP_H_
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struct rmnet_map_control_command_s {
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uint8_t command_name;
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#ifndef RMNET_USE_BIG_ENDIAN_STRUCTS
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uint8_t cmd_type:2;
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uint8_t reserved:6;
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#else
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uint8_t reserved:6;
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uint8_t cmd_type:2;
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#endif /* RMNET_USE_BIG_ENDIAN_STRUCTS */
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uint16_t reserved2;
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uint32_t transaction_id;
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union {
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uint8_t data[65528];
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struct {
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#ifndef RMNET_USE_BIG_ENDIAN_STRUCTS
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uint16_t ip_family:2;
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uint16_t reserved:14;
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#else
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uint16_t reserved:14;
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uint16_t ip_family:2;
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#endif /* RMNET_USE_BIG_ENDIAN_STRUCTS */
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uint16_t flow_control_seq_num;
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uint32_t qos_id;
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} flow_control;
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};
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} __aligned(1);
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struct rmnet_map_dl_checksum_trailer_s {
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unsigned char reserved_h;
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned char valid:1;
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unsigned char reserved_l:7;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned char reserved_l:7;
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unsigned char valid:1;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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unsigned short checksum_start_offset;
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unsigned short checksum_length;
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unsigned short checksum_value;
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} __aligned(1);
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struct rmnet_map_ul_checksum_header_s {
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unsigned short checksum_start_offset;
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned short checksum_insert_offset:14;
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unsigned short udp_ip4_ind:1;
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unsigned short cks_en:1;
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#elif defined(__BIG_ENDIAN_BITFIELD)
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unsigned short cks_en:1;
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unsigned short udp_ip4_ind:1;
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unsigned short checksum_insert_offset:14;
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#else
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#error "Please fix <asm/byteorder.h>"
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#endif
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} __aligned(1);
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enum rmnet_map_results_e {
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RMNET_MAP_SUCCESS,
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RMNET_MAP_CONSUMED,
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RMNET_MAP_GENERAL_FAILURE,
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RMNET_MAP_NOT_ENABLED,
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RMNET_MAP_FAILED_AGGREGATION,
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RMNET_MAP_FAILED_MUX
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};
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enum rmnet_map_mux_errors_e {
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RMNET_MAP_MUX_SUCCESS,
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RMNET_MAP_MUX_INVALID_MUX_ID,
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RMNET_MAP_MUX_INVALID_PAD_LENGTH,
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RMNET_MAP_MUX_INVALID_PKT_LENGTH,
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/* This should always be the last element */
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RMNET_MAP_MUX_ENUM_LENGTH
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};
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enum rmnet_map_checksum_errors_e {
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RMNET_MAP_CHECKSUM_OK,
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RMNET_MAP_CHECKSUM_VALID_FLAG_NOT_SET,
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RMNET_MAP_CHECKSUM_VALIDATION_FAILED,
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RMNET_MAP_CHECKSUM_ERR_UNKOWN,
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RMNET_MAP_CHECKSUM_ERR_NOT_DATA_PACKET,
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RMNET_MAP_CHECKSUM_ERR_BAD_BUFFER,
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RMNET_MAP_CHECKSUM_ERR_UNKNOWN_IP_VERSION,
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RMNET_MAP_CHECKSUM_ERR_UNKNOWN_TRANSPORT,
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RMNET_MAP_CHECKSUM_FRAGMENTED_PACKET,
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RMNET_MAP_CHECKSUM_SKIPPED,
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RMNET_MAP_CHECKSUM_SW,
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/* This should always be the last element */
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RMNET_MAP_CHECKSUM_ENUM_LENGTH
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};
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enum rmnet_map_commands_e {
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RMNET_MAP_COMMAND_NONE,
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RMNET_MAP_COMMAND_FLOW_DISABLE,
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RMNET_MAP_COMMAND_FLOW_ENABLE,
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/* These should always be the last 2 elements */
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RMNET_MAP_COMMAND_UNKNOWN,
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RMNET_MAP_COMMAND_ENUM_LENGTH
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};
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enum rmnet_map_agg_state_e {
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RMNET_MAP_AGG_IDLE,
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RMNET_MAP_TXFER_SCHEDULED
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};
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#define RMNET_MAP_COMMAND_REQUEST 0
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#define RMNET_MAP_COMMAND_ACK 1
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#define RMNET_MAP_COMMAND_UNSUPPORTED 2
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#define RMNET_MAP_COMMAND_INVALID 3
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#define RMNET_MAP_NO_PAD_BYTES 0
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#define RMNET_MAP_ADD_PAD_BYTES 1
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uint8_t rmnet_map_demultiplex(struct sk_buff *skb);
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struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
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struct rmnet_phys_ep_conf_s *config);
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struct rmnet_map_header_s *rmnet_map_add_map_header(struct sk_buff *skb,
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int hdrlen, int pad);
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rx_handler_result_t rmnet_map_command(struct sk_buff *skb,
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struct rmnet_phys_ep_conf_s *config);
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void rmnet_map_aggregate(struct sk_buff *skb,
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struct rmnet_phys_ep_conf_s *config);
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int rmnet_map_checksum_downlink_packet(struct sk_buff *skb);
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int rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
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struct net_device *orig_dev, uint32_t egress_data_format);
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#endif /* _RMNET_MAP_H_ */
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