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rpma_write(3) RPMA Programmer's Manual rpma_write(3)

NAME

rpma_write - initiate the write operation

SYNOPSIS

      #include <librpma.h>
      struct rpma_conn;
      struct rpma_mr_local;
      struct rpma_mr_remote;
      int rpma_write(struct rpma_conn *conn,
                      struct rpma_mr_remote *dst, size_t dst_offset,
                      const struct rpma_mr_local *src,  size_t src_offset,
                      size_t len, int flags, const void *op_context);

DESCRIPTION

rpma_write() initiates transferring data from the local memory to 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

RETURN VALUE

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

ERRORS

rpma_write() can fail with the following errors:
  • RPMA_E_INVAL - conn, dst or src is NULL
  • RPMA_E_INVAL - flags are not set
  • RPMA_E_PROVIDER - ibv_post_send(3) failed

SEE ALSO

rpma_conn_req_connect(3), rpma_mr_reg(3), rpma_mr_remote_from_descriptor(3), librpma(7) and https://pmem.io/rpma/
21 October 2020 RPMA