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Libiscsi: add support for EXTENDED COPY

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Build on existing scsi_cdb_extended_copy() functionality. This operation
can be used to offload inter and intra LU copies to the target.

The API is rather primitive, in that the caller needs to construct the
parameter buffer, including CSCD and segment descriptor lists, etc.

Signed-off-by: David Disseldorp <ddiss@suse.de>
This commit is contained in:
David Disseldorp
2017-01-03 23:58:20 +01:00
parent f475436c5a
commit 4bc5f962e2
5 changed files with 56 additions and 0 deletions
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20
lib/sync.c
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@@ -1687,6 +1687,26 @@ iscsi_receive_copy_results_sync(struct iscsi_context *iscsi, int lun,
return state.task;
}
struct scsi_task *
iscsi_extended_copy_sync(struct iscsi_context *iscsi, int lun,
struct iscsi_data *param_data)
{
struct iscsi_sync_state state;
memset(&state, 0, sizeof(state));
if (iscsi_extended_copy_task(iscsi, lun, param_data,
scsi_sync_cb, &state) == NULL) {
iscsi_set_error(iscsi, "Failed to send EXTENDED COPY"
" command");
return NULL;
}
event_loop(iscsi, &state);
return state.task;
}
struct scsi_task *
iscsi_scsi_command_sync(struct iscsi_context *iscsi, int lun,
struct scsi_task *task, struct iscsi_data *data)