1/* SPDX-License-Identifier: GPL-2.0-only */
 2/* Copyright (c) 2013-2018, 2021, The Linux Foundation. All rights reserved.
 3 */
 4
 5#ifndef _RMNET_MAP_H_
 6#define _RMNET_MAP_H_
 7#include <linux/if_rmnet.h>
 8
 9struct rmnet_map_control_command {
10	u8  command_name;
11	u8  cmd_type:2;
12	u8  reserved:6;
13	u16 reserved2;
14	u32 transaction_id;
15	union {
16		struct {
17			u16 ip_family:2;
18			u16 reserved:14;
19			__be16 flow_control_seq_num;
20			__be32 qos_id;
21		} flow_control;
22		u8 data[0];
23	};
24}  __aligned(1);
25
26enum rmnet_map_commands {
27	RMNET_MAP_COMMAND_NONE,
28	RMNET_MAP_COMMAND_FLOW_DISABLE,
29	RMNET_MAP_COMMAND_FLOW_ENABLE,
30	/* These should always be the last 2 elements */
31	RMNET_MAP_COMMAND_UNKNOWN,
32	RMNET_MAP_COMMAND_ENUM_LENGTH
33};
34
35#define RMNET_MAP_COMMAND_REQUEST     0
36#define RMNET_MAP_COMMAND_ACK         1
37#define RMNET_MAP_COMMAND_UNSUPPORTED 2
38#define RMNET_MAP_COMMAND_INVALID     3
39
40#define RMNET_MAP_NO_PAD_BYTES        0
41#define RMNET_MAP_ADD_PAD_BYTES       1
42
43struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
44				      struct rmnet_port *port);
45struct rmnet_map_header *rmnet_map_add_map_header(struct sk_buff *skb,
46						  int hdrlen,
47						  struct rmnet_port *port,
48						  int pad);
49void rmnet_map_command(struct sk_buff *skb, struct rmnet_port *port);
50int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len);
51void rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
52				      struct rmnet_port *port,
53				      struct net_device *orig_dev,
54				      int csum_type);
55int rmnet_map_process_next_hdr_packet(struct sk_buff *skb, u16 len);
56
57#endif /* _RMNET_MAP_H_ */