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iscsi: accumulate data_transferred properly for large writes

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Without this fix, large writes would report underflow.  Linux
initiator seems to ignore the underflow condition, but ESXi
initiator would properly detect it.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: Icab28531c44f61a8e5529bcee989d0c2bf41d043

Reviewed-on: https://review.gerrithub.io/423906
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Jim Harris 2018-08-29 07:51:35 -07:00 committed by Changpeng Liu
parent b6770c73cc
commit 42daa14f64
1 changed files with 6 additions and 3 deletions
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9
lib/iscsi/conn.c
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@ -900,9 +900,12 @@ spdk_iscsi_task_cpl(struct spdk_scsi_task *scsi_task)
process_read_task_completion(conn, task, primary);
} else {
primary->bytes_completed += task->scsi.length;
if ((task != primary) &&
(task->scsi.status != SPDK_SCSI_STATUS_GOOD)) {
spdk_scsi_task_copy_status(&primary->scsi, &task->scsi);
if (task != primary) {
if (task->scsi.status == SPDK_SCSI_STATUS_GOOD) {
primary->scsi.data_transferred += task->scsi.data_transferred;
} else {
spdk_scsi_task_copy_status(&primary->scsi, &task->scsi);
}
}
if (primary->bytes_completed == primary->scsi.transfer_len) {