Man page - rpma_mr_advise(3)

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Manual

rpma_mr_advise(3)

RPMA Programmer's Manual

rpma_mr_advise(3)

NAME

rpma_mr_advise - give advice about an address range in a memory registration

SYNOPSIS



      #include <librpma.h>


      struct rpma_mr_local *mr;


      int rpma_mr_advise(struct rpma_mr_local *mr, size_t offset, size_t len, int advice,


              uint32_t flags);

DESCRIPTION

rpma_mr_advise() gives advice about an address range in a memory registration. The usage parameter specifies the operations that can be performed on the given memory address range. For available advice and flags values please see ibv_advise_mr(3).

RETURN VALUE

The rpma_mr_advise() function returns 0 on success or a negative error code on failure.

ERRORS

rpma_mr_advise() can fail with the following errors:

•: RPMA_E_INVAL - in one of the following:

the requested range is out of the memory registration bounds
the memory registration usage does not allow the specific advice
the flags are invalid

RPMA_E_NOSUPP - the operation is not supported by the system
RPMA_E_PROVIDER - ibv_mr_advise(3) failed for other errors