xlio_socket_send_attr Struct Reference

Send operation attributes. More...

#include <xlio_types.h>

Public Attributes
unsigned	flags
uint32_t	mkey
uintptr_t	userdata_op

Detailed Description

Send operation attributes.

Structure containing parameters for send operations (xlio_socket_send/sendv). Controls zero-copy behavior, flushing, and completion tracking.

Zero-Copy Operation:

• mkey: Memory key for registered memory regions
• userdata_op: User data provided to completion callback
• For zero-copy, memory must be registered with ibv_pd from xlio_socket_get_pd()

Inline vs Zero-Copy:

• INLINE flag: Data copied to internal buffers, no completion callback
• Zero-copy: Data sent directly from user buffer, completion callback invoked

Structure Members:

• unsigned flags: Send flags (XLIO_SOCKET_SEND_FLAG_*)
• uint32_t mkey: Memory key for zero-copy operation (ignored for inline)
• uintptr_t userdata_op: User data for completion callback (zero-copy only)

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The documentation for this struct was generated from the following file:

• xlio_types.h