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[scsi] Make SCSI command issuing partially asynchronous

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Move the icky call to step() from iscsi.c to scsi.c; this takes it at
least one step further away from where it really doesn't belong.
This commit is contained in:
Michael Brown
2009-07-07 23:00:11 +01:00
parent 51172783e2
commit 1d8d8ef2c8
4 changed files with 33 additions and 30 deletions
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5
src/include/gpxe/iscsi.h
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@@ -614,11 +614,6 @@ struct iscsi_session {
* Set to NULL when command is complete.
*/
struct scsi_command *command;
/** SCSI command return code
*
* Set to -EINPROGRESS while command is processing.
*/
int rc;
/** Instant return code
*
* Set to a non-zero value if all requests should return

11
src/include/gpxe/scsi.h
View File

@@ -236,6 +236,8 @@ struct scsi_command {
uint8_t status;
/** SCSI sense response code */
uint8_t sense_response;
/** Command status code */
int rc;
};
/** A SCSI device */
@@ -256,10 +258,11 @@ struct scsi_device {
* @ret rc Return status code
*
* Note that a successful return status code indicates only
* that the SCSI command completed. The caller must check the
* status field in the command structure to see if, for
* example, the device returned CHECK CONDITION or some other
* non-success status code.
* that the SCSI command was issued. The caller must check
* the status field in the command structure to see when the
* command completes and whether, for example, the device
* returned CHECK CONDITION or some other non-success status
* code.
*/
int ( * command ) ( struct scsi_device *scsi,
struct scsi_command *command );