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111 lines
3.9 KiB
111 lines
3.9 KiB
From 0a784c45a7b7ee32c36bf86eebb24c8431a89f49 Mon Sep 17 00:00:00 2001
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From: Stefano Garzarella <sgarzare@redhat.com>
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Date: Wed, 12 Jul 2023 15:43:52 +0200
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Subject: [PATCH 03/12] scsi: clear unit attention only for REPORT LUNS
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commands
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RH-Author: Stefano Garzarella <sgarzare@redhat.com>
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RH-MergeRequest: 184: scsi: fix issue with Linux guest and unit attention
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RH-Bugzilla: 2176702
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Commit: [3/3] 01d5e112ef9ae204d96ceb01b4a453fdb4e8b669 (sgarzarella/qemu-kvm-c-9-s)
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scsi_clear_unit_attention() now only handles REPORTED LUNS DATA HAS
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CHANGED.
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This only happens when we handle REPORT LUNS commands, so let's rename
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the function in scsi_clear_reported_luns_changed() and call it only in
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scsi_target_emulate_report_luns().
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Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
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Message-ID: <20230712134352.118655-4-sgarzare@redhat.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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(cherry picked from commit 2eb5599e8a73e70a9e86a97120818ff95a43a23a)
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Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
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---
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hw/scsi/scsi-bus.c | 34 +++++++++++-----------------------
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1 file changed, 11 insertions(+), 23 deletions(-)
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diff --git a/hw/scsi/scsi-bus.c b/hw/scsi/scsi-bus.c
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index cecd26479e..9542410800 100644
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--- a/hw/scsi/scsi-bus.c
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+++ b/hw/scsi/scsi-bus.c
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@@ -22,6 +22,7 @@ static char *scsibus_get_fw_dev_path(DeviceState *dev);
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static void scsi_req_dequeue(SCSIRequest *req);
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static uint8_t *scsi_target_alloc_buf(SCSIRequest *req, size_t len);
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static void scsi_target_free_buf(SCSIRequest *req);
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+static void scsi_clear_reported_luns_changed(SCSIRequest *req);
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static int next_scsi_bus;
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@@ -518,6 +519,14 @@ static bool scsi_target_emulate_report_luns(SCSITargetReq *r)
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/* store the LUN list length */
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stl_be_p(&r->buf[0], len - 8);
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+
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+ /*
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+ * If a REPORT LUNS command enters the enabled command state, [...]
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+ * the device server shall clear any pending unit attention condition
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+ * with an additional sense code of REPORTED LUNS DATA HAS CHANGED.
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+ */
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+ scsi_clear_reported_luns_changed(&r->req);
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+
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return true;
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}
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@@ -816,18 +825,10 @@ uint8_t *scsi_req_get_buf(SCSIRequest *req)
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return req->ops->get_buf(req);
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}
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-static void scsi_clear_unit_attention(SCSIRequest *req)
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+static void scsi_clear_reported_luns_changed(SCSIRequest *req)
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{
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SCSISense *ua;
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- /*
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- * scsi_fetch_unit_attention_sense() already cleaned the unit attention
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- * in this case.
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- */
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- if (req->ops == &reqops_unit_attention) {
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- return;
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- }
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-
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if (req->dev->unit_attention.key == UNIT_ATTENTION) {
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ua = &req->dev->unit_attention;
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} else if (req->bus->unit_attention.key == UNIT_ATTENTION) {
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@@ -836,13 +837,7 @@ static void scsi_clear_unit_attention(SCSIRequest *req)
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return;
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}
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- /*
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- * If a REPORT LUNS command enters the enabled command state, [...]
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- * the device server shall clear any pending unit attention condition
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- * with an additional sense code of REPORTED LUNS DATA HAS CHANGED.
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- */
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- if (req->cmd.buf[0] == REPORT_LUNS &&
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- ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc &&
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+ if (ua->asc == SENSE_CODE(REPORTED_LUNS_CHANGED).asc &&
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ua->ascq == SENSE_CODE(REPORTED_LUNS_CHANGED).ascq) {
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*ua = SENSE_CODE(NO_SENSE);
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}
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@@ -1528,13 +1523,6 @@ void scsi_req_complete(SCSIRequest *req, int status)
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req->dev->sense_is_ua = false;
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}
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- /*
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- * Unit attention state is now stored in the device's sense buffer
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- * if the HBA didn't do autosense. Clear the pending unit attention
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- * flags.
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- */
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- scsi_clear_unit_attention(req);
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-
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scsi_req_ref(req);
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scsi_req_dequeue(req);
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req->bus->info->complete(req, req->residual);
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--
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2.39.3
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