1 /* Copyright (c) 2013-2017, 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 #ifndef _RMNET_MAP_H_ 14 #define _RMNET_MAP_H_ 15 16 struct rmnet_map_control_command { 17 u8 command_name; 18 u8 cmd_type:2; 19 u8 reserved:6; 20 u16 reserved2; 21 u32 transaction_id; 22 union { 23 struct { 24 u16 ip_family:2; 25 u16 reserved:14; 26 u16 flow_control_seq_num; 27 u32 qos_id; 28 } flow_control; 29 u8 data[0]; 30 }; 31 } __aligned(1); 32 33 enum rmnet_map_results { 34 RMNET_MAP_SUCCESS, 35 RMNET_MAP_CONSUMED, 36 RMNET_MAP_GENERAL_FAILURE, 37 RMNET_MAP_NOT_ENABLED, 38 RMNET_MAP_FAILED_AGGREGATION, 39 RMNET_MAP_FAILED_MUX 40 }; 41 42 enum rmnet_map_commands { 43 RMNET_MAP_COMMAND_NONE, 44 RMNET_MAP_COMMAND_FLOW_DISABLE, 45 RMNET_MAP_COMMAND_FLOW_ENABLE, 46 /* These should always be the last 2 elements */ 47 RMNET_MAP_COMMAND_UNKNOWN, 48 RMNET_MAP_COMMAND_ENUM_LENGTH 49 }; 50 51 struct rmnet_map_header { 52 u8 pad_len:6; 53 u8 reserved_bit:1; 54 u8 cd_bit:1; 55 u8 mux_id; 56 u16 pkt_len; 57 } __aligned(1); 58 59 #define RMNET_MAP_GET_MUX_ID(Y) (((struct rmnet_map_header *) \ 60 (Y)->data)->mux_id) 61 #define RMNET_MAP_GET_CD_BIT(Y) (((struct rmnet_map_header *) \ 62 (Y)->data)->cd_bit) 63 #define RMNET_MAP_GET_PAD(Y) (((struct rmnet_map_header *) \ 64 (Y)->data)->pad_len) 65 #define RMNET_MAP_GET_CMD_START(Y) ((struct rmnet_map_control_command *) \ 66 ((Y)->data + \ 67 sizeof(struct rmnet_map_header))) 68 #define RMNET_MAP_GET_LENGTH(Y) (ntohs(((struct rmnet_map_header *) \ 69 (Y)->data)->pkt_len)) 70 71 #define RMNET_MAP_COMMAND_REQUEST 0 72 #define RMNET_MAP_COMMAND_ACK 1 73 #define RMNET_MAP_COMMAND_UNSUPPORTED 2 74 #define RMNET_MAP_COMMAND_INVALID 3 75 76 #define RMNET_MAP_NO_PAD_BYTES 0 77 #define RMNET_MAP_ADD_PAD_BYTES 1 78 79 u8 rmnet_map_demultiplex(struct sk_buff *skb); 80 struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb); 81 struct rmnet_map_header *rmnet_map_add_map_header(struct sk_buff *skb, 82 int hdrlen, int pad); 83 void rmnet_map_command(struct sk_buff *skb, struct rmnet_port *port); 84 85 #endif /* _RMNET_MAP_H_ */ 86