drivers/infiniband/hw/usnic/usnic_abi.h

Source file repositories/reference/linux-study-clean/drivers/infiniband/hw/usnic/usnic_abi.h

File Facts

System
Linux kernel
Corpus path
drivers/infiniband/hw/usnic/usnic_abi.h
Extension
.h
Size
2576 bytes
Lines
89
Domain
Driver Families
Bucket
drivers/infiniband
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 usnic_transport_spec {
	enum usnic_transport_type	trans_type;
	union {
		struct {
			uint16_t	port_num;
		} usnic_roce;
		struct {
			uint32_t	sock_fd;
		} udp;
	};
};

struct usnic_ib_create_qp_cmd {
	struct usnic_transport_spec	spec;
};

/*TODO: Future - usnic_modify_qp needs to pass in generic filters */
struct usnic_ib_create_qp_resp {
	u32				vfid;
	u32				qp_grp_id;
	u64				bar_bus_addr;
	u32				bar_len;
/*
 * WQ, RQ, CQ are explicitly specified bc exposing a generic resources inteface
 * expands the scope of ABI to many files.
 */
	u32				wq_cnt;
	u32				rq_cnt;
	u32				cq_cnt;
	u32				wq_idx[USNIC_QP_GRP_MAX_WQS];
	u32				rq_idx[USNIC_QP_GRP_MAX_RQS];
	u32				cq_idx[USNIC_QP_GRP_MAX_CQS];
	u32				transport;
	u32				reserved[9];
};

#endif /* USNIC_ABI_H */

Annotation

Implementation Notes