include/uapi/rdma/rdma_user_rxe.h

File Facts

System

Linux kernel

Corpus path

include/uapi/rdma/rdma_user_rxe.h

Extension

.h

Size

5127 bytes

Lines

232

Domain

Repository Root And Misc

Bucket

include

Inferred role

Repository Root And Misc: implementation source

Status

source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

• Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• linux/socket.h
• linux/in.h
• linux/in6.h

Detected Declarations

• struct rxe_global_route
• struct rxe_av
• struct rxe_send_wr
• struct rxe_sge
• struct mminfo
• struct rxe_dma_info
• struct rxe_send_wqe
• struct rxe_recv_wqe
• struct rxe_create_ah_resp
• struct rxe_create_cq_resp
• struct rxe_resize_cq_resp
• struct rxe_create_qp_resp
• struct rxe_create_srq_resp
• struct rxe_modify_srq_cmd
• struct rxe_queue_buf

Annotated Snippet

struct rxe_global_route {
	union rxe_gid	dgid;
	__u32		flow_label;
	__u8		sgid_index;
	__u8		hop_limit;
	__u8		traffic_class;
};

struct rxe_av {
	__u8			port_num;
	/* From RXE_NETWORK_TYPE_* */
	__u8			network_type;
	__u8			dmac[6];
	struct rxe_global_route	grh;
	union {
		struct sockaddr_in	_sockaddr_in;
		struct sockaddr_in6	_sockaddr_in6;
	} sgid_addr, dgid_addr;
};

struct rxe_send_wr {
	__aligned_u64		wr_id;
	__u32			reserved;
	__u32			opcode;
	__u32			send_flags;
	union {
		__be32		imm_data;
		__u32		invalidate_rkey;
	} ex;
	union {
		struct {
			__aligned_u64 remote_addr;
			__u32	length;
			__u32	rkey;
			__u8	type;
			__u8	level;
		} flush;
		struct {
			__aligned_u64 remote_addr;
			__u32	rkey;
			__u32	reserved;
		} rdma;
		struct {
			__aligned_u64 remote_addr;
			__aligned_u64 compare_add;
			__aligned_u64 swap;
			__u32	rkey;
			__u32	reserved;
		} atomic;
		struct {
			__u32	remote_qpn;
			__u32	remote_qkey;
			__u16	pkey_index;
			__u16	reserved;
			__u32	ah_num;
			__u32	pad[4];
			struct rxe_av av;
		} ud;
		struct {
			__aligned_u64	addr;
			__aligned_u64	length;
			__u32		mr_lkey;
			__u32		mw_rkey;
			__u32		rkey;
			__u32		access;
		} mw;
		/* reg is only used by the kernel and is not part of the uapi */
#ifdef __KERNEL__
		struct {
			union {
				struct ib_mr *mr;
				__aligned_u64 reserved;
			};
			__u32	     key;
			__u32	     access;
		} reg;
#endif
	} wr;
};

struct rxe_sge {
	__aligned_u64 addr;
	__u32	length;
	__u32	lkey;
};

struct mminfo {
	__aligned_u64		offset;
	__u32			size;
	__u32			pad;

Annotation

• Immediate include surface: `linux/types.h`, `linux/socket.h`, `linux/in.h`, `linux/in6.h`.
• Detected declarations: `struct rxe_global_route`, `struct rxe_av`, `struct rxe_send_wr`, `struct rxe_sge`, `struct mminfo`, `struct rxe_dma_info`, `struct rxe_send_wqe`, `struct rxe_recv_wqe`, `struct rxe_create_ah_resp`, `struct rxe_create_cq_resp`.
• Atlas domain: Repository Root And Misc / include.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.