1 /* Copyright (c) 2013-2018, 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 #include <linux/if_rmnet.h> 16 17 struct rmnet_map_control_command { 18 u8 command_name; 19 u8 cmd_type:2; 20 u8 reserved:6; 21 u16 reserved2; 22 u32 transaction_id; 23 union { 24 struct { 25 u16 ip_family:2; 26 u16 reserved:14; 27 __be16 flow_control_seq_num; 28 __be32 qos_id; 29 } flow_control; 30 u8 data[0]; 31 }; 32 } __aligned(1); 33 34 enum rmnet_map_commands { 35 RMNET_MAP_COMMAND_NONE, 36 RMNET_MAP_COMMAND_FLOW_DISABLE, 37 RMNET_MAP_COMMAND_FLOW_ENABLE, 38 /* These should always be the last 2 elements */ 39 RMNET_MAP_COMMAND_UNKNOWN, 40 RMNET_MAP_COMMAND_ENUM_LENGTH 41 }; 42 43 #define RMNET_MAP_GET_MUX_ID(Y) (((struct rmnet_map_header *) \ 44 (Y)->data)->mux_id) 45 #define RMNET_MAP_GET_CD_BIT(Y) (((struct rmnet_map_header *) \ 46 (Y)->data)->cd_bit) 47 #define RMNET_MAP_GET_PAD(Y) (((struct rmnet_map_header *) \ 48 (Y)->data)->pad_len) 49 #define RMNET_MAP_GET_CMD_START(Y) ((struct rmnet_map_control_command *) \ 50 ((Y)->data + \ 51 sizeof(struct rmnet_map_header))) 52 #define RMNET_MAP_GET_LENGTH(Y) (ntohs(((struct rmnet_map_header *) \ 53 (Y)->data)->pkt_len)) 54 55 #define RMNET_MAP_COMMAND_REQUEST 0 56 #define RMNET_MAP_COMMAND_ACK 1 57 #define RMNET_MAP_COMMAND_UNSUPPORTED 2 58 #define RMNET_MAP_COMMAND_INVALID 3 59 60 #define RMNET_MAP_NO_PAD_BYTES 0 61 #define RMNET_MAP_ADD_PAD_BYTES 1 62 63 struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb, 64 struct rmnet_port *port); 65 struct rmnet_map_header *rmnet_map_add_map_header(struct sk_buff *skb, 66 int hdrlen, int pad); 67 void rmnet_map_command(struct sk_buff *skb, struct rmnet_port *port); 68 int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len); 69 void rmnet_map_checksum_uplink_packet(struct sk_buff *skb, 70 struct net_device *orig_dev); 71 72 #endif /* _RMNET_MAP_H_ */ 73