qualcomm/rmnet/rmnet_map.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /* Copyright (c) 2013-2018, 2021, The Linux Foundation. All rights reserved.
0003  */
0004
0005 #ifndef _RMNET_MAP_H_
0006 #define _RMNET_MAP_H_
0007 #include <linux/if_rmnet.h>
0008
0009 struct rmnet_map_control_command {
0010     u8  command_name;
0011     u8  cmd_type:2;
0012     u8  reserved:6;
0013     u16 reserved2;
0014     u32 transaction_id;
0015     union {
0016         struct {
0017             u16 ip_family:2;
0018             u16 reserved:14;
0019             __be16 flow_control_seq_num;
0020             __be32 qos_id;
0021         } flow_control;
0022         u8 data[0];
0023     };
0024 }  __aligned(1);
0025
0026 enum rmnet_map_commands {
0027     RMNET_MAP_COMMAND_NONE,
0028     RMNET_MAP_COMMAND_FLOW_DISABLE,
0029     RMNET_MAP_COMMAND_FLOW_ENABLE,
0030     /* These should always be the last 2 elements */
0031     RMNET_MAP_COMMAND_UNKNOWN,
0032     RMNET_MAP_COMMAND_ENUM_LENGTH
0033 };
0034
0035 #define RMNET_MAP_COMMAND_REQUEST     0
0036 #define RMNET_MAP_COMMAND_ACK         1
0037 #define RMNET_MAP_COMMAND_UNSUPPORTED 2
0038 #define RMNET_MAP_COMMAND_INVALID     3
0039
0040 #define RMNET_MAP_NO_PAD_BYTES        0
0041 #define RMNET_MAP_ADD_PAD_BYTES       1
0042
0043 struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
0044                       struct rmnet_port *port);
0045 struct rmnet_map_header *rmnet_map_add_map_header(struct sk_buff *skb,
0046                           int hdrlen,
0047                           struct rmnet_port *port,
0048                           int pad);
0049 void rmnet_map_command(struct sk_buff *skb, struct rmnet_port *port);
0050 int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len);
0051 void rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
0052                       struct rmnet_port *port,
0053                       struct net_device *orig_dev,
0054                       int csum_type);
0055 int rmnet_map_process_next_hdr_packet(struct sk_buff *skb, u16 len);
0056
0057 #endif /* _RMNET_MAP_H_ */