rpma_atomic_write3

Usage

      #include <librpma.h>
      struct rpma_conn;
      struct rpma_mr_remote;
      int rpma_atomic_write(struct rpma_conn *conn,
                      struct rpma_mr_remote *dst, size_t dst_offset,
                      const char src[8], int flags, const void *op_context);

Overview

rpma_atomic_write() initiates the atomic 8 bytes write operation (transferring data from the local memory to the remote memory). The atomic write operation allows transferring exactly 8 bytes of data and storing them atomically in the remote memory.

The attribute flags set the completion notification indicator:

•

RPMA_F_COMPLETION_ON_ERROR - generate the completion on error

•

RPMA_F_COMPLETION_ALWAYS - generate the completion regardless of result of the operation.

op_context is returned in the wr_id field of the completion (struct ibv_wc).

Return value

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

Errors

rpma_atomic_write() can fail with the following errors: