drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h

Source file repositories/reference/linux-study-clean/drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h

File Facts

System
Linux kernel
Corpus path
drivers/net/ethernet/qualcomm/rmnet/rmnet_map.h
Extension
.h
Size
1949 bytes
Lines
64
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct rmnet_map_control_command {
	u8  command_name;
	u8  cmd_type:2;
	u8  reserved:6;
	u16 reserved2;
	u32 transaction_id;
	union {
		struct {
			u16 ip_family:2;
			u16 reserved:14;
			__be16 flow_control_seq_num;
			__be32 qos_id;
		} flow_control;
		DECLARE_FLEX_ARRAY(u8, data);
	};
}  __aligned(1);

enum rmnet_map_commands {
	RMNET_MAP_COMMAND_NONE,
	RMNET_MAP_COMMAND_FLOW_DISABLE,
	RMNET_MAP_COMMAND_FLOW_ENABLE,
	/* These should always be the last 2 elements */
	RMNET_MAP_COMMAND_UNKNOWN,
	RMNET_MAP_COMMAND_ENUM_LENGTH
};

#define RMNET_MAP_COMMAND_REQUEST     0
#define RMNET_MAP_COMMAND_ACK         1
#define RMNET_MAP_COMMAND_UNSUPPORTED 2
#define RMNET_MAP_COMMAND_INVALID     3

#define RMNET_MAP_NO_PAD_BYTES        0
#define RMNET_MAP_ADD_PAD_BYTES       1

struct sk_buff *rmnet_map_deaggregate(struct sk_buff *skb,
				      struct rmnet_port *port);
struct rmnet_map_header *rmnet_map_add_map_header(struct sk_buff *skb,
						  int hdrlen,
						  struct rmnet_port *port,
						  int pad);
void rmnet_map_command(struct sk_buff *skb, struct rmnet_port *port);
int rmnet_map_checksum_downlink_packet(struct sk_buff *skb, u16 len);
void rmnet_map_checksum_uplink_packet(struct sk_buff *skb,
				      struct rmnet_port *port,
				      struct net_device *orig_dev,
				      int csum_type);
int rmnet_map_process_next_hdr_packet(struct sk_buff *skb, u16 len);
unsigned int rmnet_map_tx_aggregate(struct sk_buff *skb, struct rmnet_port *port,
				    struct net_device *orig_dev);
void rmnet_map_tx_aggregate_init(struct rmnet_port *port);
void rmnet_map_tx_aggregate_exit(struct rmnet_port *port);
void rmnet_map_update_ul_agg_config(struct rmnet_port *port, u32 size,
				    u32 count, u32 time);

#endif /* _RMNET_MAP_H_ */

Annotation

Implementation Notes