Subash Abhinov Kasiviswanathan | 2139ce8a | 2016-10-14 11:01:48 -0600 | [diff] [blame] | 1 | /* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/types.h> |
| 14 | #include <linux/spinlock.h> |
| 15 | #include <net/rmnet_config.h> |
| 16 | |
| 17 | #ifndef _RMNET_MAP_H_ |
| 18 | #define _RMNET_MAP_H_ |
| 19 | |
| 20 | struct rmnet_map_control_command_s { |
| 21 | u8 command_name; |
| 22 | #ifndef RMNET_USE_BIG_ENDIAN_STRUCTS |
| 23 | u8 cmd_type:2; |
| 24 | u8 reserved:6; |
| 25 | #else |
| 26 | u8 reserved:6; |
| 27 | u8 cmd_type:2; |
| 28 | #endif /* RMNET_USE_BIG_ENDIAN_STRUCTS */ |
| 29 | u16 reserved2; |
| 30 | u32 transaction_id; |
| 31 | union { |
| 32 | u8 data[65528]; |
| 33 | struct { |
| 34 | #ifndef RMNET_USE_BIG_ENDIAN_STRUCTS |
| 35 | u16 ip_family:2; |
| 36 | u16 reserved:14; |
| 37 | #else |
| 38 | u16 reserved:14; |
| 39 | u16 ip_family:2; |
| 40 | #endif /* RMNET_USE_BIG_ENDIAN_STRUCTS */ |
| 41 | u16 flow_control_seq_num; |
| 42 | u32 qos_id; |
| 43 | } flow_control; |
| 44 | }; |
| 45 | } __aligned(1); |
| 46 | |
| 47 | struct rmnet_map_dl_checksum_trailer_s { |
| 48 | unsigned char reserved_h; |
| 49 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 50 | unsigned char valid:1; |
| 51 | unsigned char reserved_l:7; |
| 52 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 53 | unsigned char reserved_l:7; |
| 54 | unsigned char valid:1; |
| 55 | #else |
| 56 | #error "Please fix <asm/byteorder.h>" |
| 57 | #endif |
| 58 | unsigned short checksum_start_offset; |
| 59 | unsigned short checksum_length; |
| 60 | unsigned short checksum_value; |
| 61 | } __aligned(1); |
| 62 | |
| 63 | struct rmnet_map_ul_checksum_header_s { |
| 64 | unsigned short checksum_start_offset; |
| 65 | #if defined(__LITTLE_ENDIAN_BITFIELD) |
| 66 | unsigned short checksum_insert_offset:14; |
| 67 | unsigned short udp_ip4_ind:1; |
| 68 | unsigned short cks_en:1; |
| 69 | #elif defined(__BIG_ENDIAN_BITFIELD) |
| 70 | unsigned short cks_en:1; |
| 71 | unsigned short udp_ip4_ind:1; |
| 72 | unsigned short checksum_insert_offset:14; |
| 73 | #else |
| 74 | #error "Please fix <asm/byteorder.h>" |
| 75 | #endif |
| 76 | } __aligned(1); |
| 77 | |
| 78 | enum rmnet_map_results_e { |
| 79 | RMNET_MAP_SUCCESS, |
| 80 | RMNET_MAP_CONSUMED, |
| 81 | RMNET_MAP_GENERAL_FAILURE, |
| 82 | RMNET_MAP_NOT_ENABLED, |
| 83 | RMNET_MAP_FAILED_AGGREGATION, |
| 84 | RMNET_MAP_FAILED_MUX |
| 85 | }; |
| 86 | |
| 87 | enum rmnet_map_mux_errors_e { |
| 88 | RMNET_MAP_MUX_SUCCESS, |
| 89 | RMNET_MAP_MUX_INVALID_MUX_ID, |
| 90 | RMNET_MAP_MUX_INVALID_PAD_LENGTH, |
| 91 | RMNET_MAP_MUX_INVALID_PKT_LENGTH, |
| 92 | /* This should always be the last element */ |
| 93 | RMNET_MAP_MUX_ENUM_LENGTH |
| 94 | }; |
| 95 | |
| 96 | enum rmnet_map_checksum_errors_e { |
| 97 | RMNET_MAP_CHECKSUM_OK, |
| 98 | RMNET_MAP_CHECKSUM_VALID_FLAG_NOT_SET, |
| 99 | RMNET_MAP_CHECKSUM_VALIDATION_FAILED, |
| 100 | RMNET_MAP_CHECKSUM_ERR_UNKNOWN, |
| 101 | RMNET_MAP_CHECKSUM_ERR_NOT_DATA_PACKET, |
| 102 | RMNET_MAP_CHECKSUM_ERR_BAD_BUFFER, |
| 103 | RMNET_MAP_CHECKSUM_ERR_UNKNOWN_IP_VERSION, |
| 104 | RMNET_MAP_CHECKSUM_ERR_UNKNOWN_TRANSPORT, |
| 105 | RMNET_MAP_CHECKSUM_FRAGMENTED_PACKET, |
| 106 | RMNET_MAP_CHECKSUM_SKIPPED, |
| 107 | RMNET_MAP_CHECKSUM_SW, |
| 108 | /* This should always be the last element */ |
| 109 | RMNET_MAP_CHECKSUM_ENUM_LENGTH |
| 110 | }; |
| 111 | |
| 112 | enum rmnet_map_commands_e { |
| 113 | RMNET_MAP_COMMAND_NONE, |
| 114 | RMNET_MAP_COMMAND_FLOW_DISABLE, |
| 115 | RMNET_MAP_COMMAND_FLOW_ENABLE, |
| 116 | /* These should always be the last 2 elements */ |
| 117 | RMNET_MAP_COMMAND_UNKNOWN, |
| 118 | RMNET_MAP_COMMAND_ENUM_LENGTH |
| 119 | }; |
| 120 | |
| 121 | enum rmnet_map_agg_state_e { |
| 122 | RMNET_MAP_AGG_IDLE, |
| 123 | RMNET_MAP_TXFER_SCHEDULED |
| 124 | }; |
| 125 | |
| 126 | #define RMNET_MAP_COMMAND_REQUEST 0 |
| 127 | #define RMNET_MAP_COMMAND_ACK 1 |
| 128 | #define RMNET_MAP_COMMAND_UNSUPPORTED 2 |
| 129 | #define RMNET_MAP_COMMAND_INVALID 3 |
| 130 | |
| 131 | #define RMNET_MAP_NO_PAD_BYTES 0 |
| 132 | #define RMNET_MAP_ADD_PAD_BYTES 1 |
| 133 | |
| 134 | uint8_t rmnet_map_demultiplex(struct sk_buff *skb); |
| 135 | struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb, |
| 136 | struct rmnet_phys_ep_config *config); |
| 137 | |
| 138 | struct rmnet_map_header_s *rmnet_map_add_map_header(struct sk_buff *skb, |
| 139 | int hdrlen, int pad); |
| 140 | rx_handler_result_t rmnet_map_command(struct sk_buff *skb, |
| 141 | struct rmnet_phys_ep_config *config); |
| 142 | void rmnet_map_aggregate(struct sk_buff *skb, |
| 143 | struct rmnet_phys_ep_config *config); |
| 144 | |
| 145 | int rmnet_map_checksum_downlink_packet(struct sk_buff *skb); |
| 146 | int rmnet_map_checksum_uplink_packet(struct sk_buff *skb, |
| 147 | struct net_device *orig_dev, |
| 148 | u32 egress_data_format); |
| 149 | |
| 150 | #endif /* _RMNET_MAP_H_ */ |