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[vioscsi] SendSRB minor refactor #1153

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[vioscsi] SendSRB minor refactor #1153

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281bb7b
[vioscsi] SendSRB minor refactor
benyamin-codez Sep 19, 2024
c2240c8
[vioscsi] SendSRB additional minor refactor
benyamin-codez Sep 20, 2024
5826297
[vioscsi] SendSRB minor refactor cleanup
benyamin-codez Sep 20, 2024
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7 changes: 5 additions & 2 deletions vioscsi/helper.c
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Original file line number Diff line number Diff line change
Expand Up @@ -109,7 +109,7 @@ ENTER_FN_SRB();
srbExt->out, srbExt->in,
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&srbExt->cmd, va, pa);

if (res >= 0) {
if (res == VQ_ADD_BUFFER_SUCCESS) {
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element = &adaptExt->processing_srbs[index];
InsertTailList(&element->srb_list, &srbExt->list_entry);
element->srb_cnt++;
Expand All @@ -120,13 +120,16 @@ ENTER_FN_SRB();
virtqueue_notify(adaptExt->vq[QueueNumber]);
}
} else {
// virtqueue_add_buf() returned -28 (ENOSPC), i.e. no space for buffer, or some other error
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virtqueue_notify(adaptExt->vq[QueueNumber]);
ScsiStatus = SCSISTAT_QUEUE_FULL;
SRB_SET_SRB_STATUS(Srb, SRB_STATUS_BUSY);
SRB_SET_SCSI_STATUS(Srb, ScsiStatus);
StorPortBusy(DeviceExtension, 10);
RhelDbgPrint(TRACE_LEVEL_WARNING,
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" Could not put an SRB into a VQ, so complete it with SRB_STATUS_BUSY. QueueNumber = %lu, SRB = 0x%p, Lun = %d, TimeOut = %d.\n",
QueueNumber, srbExt->Srb, SRB_LUN(Srb), Srb->TimeOutValue);
CompleteRequest(DeviceExtension, Srb);
RhelDbgPrint(TRACE_LEVEL_FATAL, " Could not put an SRB into a VQ, so complete it with SRB_STATUS_BUSY. QueueNumber = %d, SRB = 0x%p, Lun = %d, TimeOut = %d.\n", QueueNumber, srbExt->Srb, SRB_LUN(Srb), Srb->TimeOutValue);
}

EXIT_FN_SRB();
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2 changes: 2 additions & 0 deletions vioscsi/helper.h
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Expand Up @@ -49,6 +49,8 @@
#define CACHE_LINE_SIZE 64
#define ROUND_TO_CACHE_LINES(Size) (((ULONG_PTR)(Size) + CACHE_LINE_SIZE - 1) & ~(CACHE_LINE_SIZE - 1))

#define VQ_ADD_BUFFER_SUCCESS 0

#include <srbhelper.h>

// Note: SrbGetCdbLength is defined in srbhelper.h
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