NAME

       rpma_send - initiate the send operation

SYNOPSIS

             #include <librpma.h>

             struct rpma_conn;
             struct rpma_mr_local;
             int rpma_send(struct rpma_conn *conn, const struct rpma_mr_local *src, size_t offset,
                             size_t len, int flags, const void *op_context);

DESCRIPTION

       rpma_send()  initiates  the send operation which transfers a message from the local memory
       to other side of the connection. To send a 0 byte message, set src to NULL and both offset
       and len to 0.

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

ERRORS

       rpma_send() can fail with the following errors:

       •  RPMA_E_INVAL - conn == NULL || flags == 0

       •  RPMA_E_INVAL - src == NULL && (offset != 0 || len != 0)

       •  RPMA_E_PROVIDER - ibv_post_send(3) failed

SEE ALSO

       rpma_conn_req_connect(3), rpma_mr_reg(3), librpma(7) and https://pmem.io/rpma/