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diff --git a/sys/cam/ctl/ctl_error.h b/sys/cam/ctl/ctl_error.h
--- a/sys/cam/ctl/ctl_error.h
+++ b/sys/cam/ctl/ctl_error.h
@@ -96,4 +96,31 @@
void ctl_set_space_alloc_fail(struct ctl_scsiio *ctsio);
void ctl_set_success(struct ctl_scsiio *ctsio);
+void ctl_nvme_set_error(struct ctl_nvmeio *ctnio, uint8_t sc_type,
+ uint8_t sc_status);
+void ctl_nvme_set_generic_error(struct ctl_nvmeio *ctnio, uint8_t sc_status);
+void ctl_nvme_set_invalid_opcode(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_invalid_field(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_data_transfer_error(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_internal_error(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_invalid_namespace(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_command_aborted(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_failed_fused_command(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_missing_fused_command(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_namespace_is_write_protected(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_lba_out_of_range(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_namespace_not_ready(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_write_fault(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_unrecoverable_read_error(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_compare_failure(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_space_alloc_fail(struct ctl_nvmeio *ctnio);
+void ctl_nvme_set_success(struct ctl_nvmeio *ctnio);
+
+void ctl_io_set_invalid_opcode(union ctl_io *io);
+void ctl_io_set_hw_write_protected(union ctl_io *io);
+void ctl_io_set_busy(union ctl_io *io);
+void ctl_io_set_compare_failure(union ctl_io *io, uint64_t offset);
+void ctl_io_set_space_alloc_fail(union ctl_io *io);
+void ctl_io_set_success(union ctl_io *io);
+
#endif /* _CTL_ERROR_H_ */
diff --git a/sys/cam/ctl/ctl_error.c b/sys/cam/ctl/ctl_error.c
--- a/sys/cam/ctl/ctl_error.c
+++ b/sys/cam/ctl/ctl_error.c
@@ -990,3 +990,222 @@
ctsio->sense_len = 0;
ctsio->io_hdr.status = CTL_SUCCESS;
}
+
+void
+ctl_nvme_set_error(struct ctl_nvmeio *ctnio, uint8_t sc_type,
+ uint8_t sc_status)
+{
+ uint16_t status;
+
+ memset(&ctnio->cpl, 0, sizeof(ctnio->cpl));
+ status = NVMEF(NVME_STATUS_SCT, sc_type) |
+ NVMEF(NVME_STATUS_SC, sc_status);
+ ctnio->cpl.status = htole16(status);
+ ctnio->io_hdr.status = CTL_NVME_ERROR;
+}
+
+void
+ctl_nvme_set_generic_error(struct ctl_nvmeio *ctnio, uint8_t sc_status)
+{
+ ctl_nvme_set_error(ctnio, NVME_SCT_GENERIC, sc_status);
+}
+
+void
+ctl_nvme_set_invalid_opcode(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_INVALID_OPCODE);
+}
+
+void
+ctl_nvme_set_invalid_field(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_INVALID_FIELD);
+}
+
+void
+ctl_nvme_set_data_transfer_error(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_DATA_TRANSFER_ERROR);
+}
+
+void
+ctl_nvme_set_internal_error(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_INTERNAL_DEVICE_ERROR);
+}
+
+void
+ctl_nvme_set_invalid_namespace(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_INVALID_NAMESPACE_OR_FORMAT);
+}
+
+void
+ctl_nvme_set_command_aborted(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_COMMAND_ABORTED_BY_HOST);
+}
+
+void
+ctl_nvme_set_failed_fused_command(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_ABORTED_FAILED_FUSED);
+}
+
+void
+ctl_nvme_set_missing_fused_command(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_ABORTED_MISSING_FUSED);
+}
+
+void
+ctl_nvme_set_namespace_is_write_protected(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_NAMESPACE_IS_WRITE_PROTECTED);
+}
+
+void
+ctl_nvme_set_lba_out_of_range(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_LBA_OUT_OF_RANGE);
+}
+
+void
+ctl_nvme_set_namespace_not_ready(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_generic_error(ctnio, NVME_SC_NAMESPACE_NOT_READY);
+}
+
+void
+ctl_nvme_set_write_fault(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_error(ctnio, NVME_SCT_MEDIA_ERROR,
+ NVME_SC_WRITE_FAULTS);
+}
+
+void
+ctl_nvme_set_unrecoverable_read_error(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_error(ctnio, NVME_SCT_MEDIA_ERROR,
+ NVME_SC_UNRECOVERED_READ_ERROR);
+}
+
+void
+ctl_nvme_set_compare_failure(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_error(ctnio, NVME_SCT_MEDIA_ERROR,
+ NVME_SC_COMPARE_FAILURE);
+}
+
+void
+ctl_nvme_set_space_alloc_fail(struct ctl_nvmeio *ctnio)
+{
+ ctl_nvme_set_error(ctnio, NVME_SCT_MEDIA_ERROR,
+ NVME_SC_DEALLOCATED_OR_UNWRITTEN);
+}
+
+void
+ctl_nvme_set_success(struct ctl_nvmeio *ctnio)
+{
+ memset(&ctnio->cpl, 0, sizeof(ctnio->cpl));
+ ctnio->io_hdr.status = CTL_SUCCESS;
+}
+
+void
+ctl_io_set_invalid_opcode(union ctl_io *io)
+{
+ switch (io->io_hdr.io_type) {
+ case CTL_IO_SCSI:
+ ctl_set_invalid_opcode(&io->scsiio);
+ break;
+ case CTL_IO_NVME:
+ ctl_nvme_set_invalid_opcode(&io->nvmeio);
+ break;
+ default:
+ __assert_unreachable();
+ }
+}
+
+void
+ctl_io_set_hw_write_protected(union ctl_io *io)
+{
+ switch (io->io_hdr.io_type) {
+ case CTL_IO_SCSI:
+ ctl_set_hw_write_protected(&io->scsiio);
+ break;
+ case CTL_IO_NVME:
+ ctl_nvme_set_namespace_is_write_protected(&io->nvmeio);
+ break;
+ default:
+ __assert_unreachable();
+ }
+}
+
+void
+ctl_io_set_busy(union ctl_io *io)
+{
+ switch (io->io_hdr.io_type) {
+ case CTL_IO_SCSI:
+ ctl_set_busy(&io->scsiio);
+ break;
+ case CTL_IO_NVME:
+ ctl_nvme_set_namespace_not_ready(&io->nvmeio);
+ break;
+ default:
+ __assert_unreachable();
+ }
+}
+
+void
+ctl_io_set_compare_failure(union ctl_io *io, uint64_t offset)
+{
+ uint8_t info[8];
+
+ switch (io->io_hdr.io_type) {
+ case CTL_IO_SCSI:
+ scsi_u64to8b(offset, info);
+ ctl_set_sense(&io->scsiio, /*current_error*/ 1,
+ /*sense_key*/ SSD_KEY_MISCOMPARE,
+ /*asc*/ 0x1D, /*ascq*/ 0x00,
+ /*type*/ SSD_ELEM_INFO,
+ /*size*/ sizeof(info), /*data*/ &info,
+ /*type*/ SSD_ELEM_NONE);
+ break;
+ case CTL_IO_NVME:
+ ctl_nvme_set_compare_failure(&io->nvmeio);
+ break;
+ default:
+ __assert_unreachable();
+ }
+}
+
+void
+ctl_io_set_space_alloc_fail(union ctl_io *io)
+{
+ switch (io->io_hdr.io_type) {
+ case CTL_IO_SCSI:
+ ctl_set_space_alloc_fail(&io->scsiio);
+ break;
+ case CTL_IO_NVME:
+ ctl_nvme_set_space_alloc_fail(&io->nvmeio);
+ break;
+ default:
+ __assert_unreachable();
+ }
+}
+
+void
+ctl_io_set_success(union ctl_io *io)
+{
+ switch (io->io_hdr.io_type) {
+ case CTL_IO_SCSI:
+ ctl_set_success(&io->scsiio);
+ break;
+ case CTL_IO_NVME:
+ case CTL_IO_NVME_ADMIN:
+ ctl_nvme_set_success(&io->nvmeio);
+ break;
+ default:
+ __assert_unreachable();
+ }
+}

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