-/*
- * transport_generic_map_mem_to_cmd - Use fabric-alloced pages instead of
- * allocating in the core.
- * @cmd: Associated se_cmd descriptor
- * @mem: SGL style memory for TCM WRITE / READ
- * @sg_mem_num: Number of SGL elements
- * @mem_bidi_in: SGL style memory for TCM BIDI READ
- * @sg_mem_bidi_num: Number of BIDI READ SGL elements
- *
- * Return: nonzero return cmd was rejected for -ENOMEM or inproper usage
- * of parameters.
- */
-int transport_generic_map_mem_to_cmd(
- struct se_cmd *cmd,
- struct scatterlist *sgl,
- u32 sgl_count,
- struct scatterlist *sgl_bidi,
- u32 sgl_bidi_count)
-{
- if (!sgl || !sgl_count)
- return 0;
-
- /*
- * Reject SCSI data overflow with map_mem_to_cmd() as incoming
- * scatterlists already have been set to follow what the fabric
- * passes for the original expected data transfer length.
- */
- if (cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
- pr_warn("Rejecting SCSI DATA overflow for fabric using"
- " SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC\n");
- cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
- cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
- return -EINVAL;
- }
-
- cmd->t_data_sg = sgl;
- cmd->t_data_nents = sgl_count;
-
- if (sgl_bidi && sgl_bidi_count) {
- cmd->t_bidi_data_sg = sgl_bidi;
- cmd->t_bidi_data_nents = sgl_bidi_count;
- }
- cmd->se_cmd_flags |= SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC;
- return 0;
-}
-EXPORT_SYMBOL(transport_generic_map_mem_to_cmd);
-