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qemu-kvm/kvm-scsi-disk-move-scsi_handle_rw_error-earlier.patch

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Synchronization with qemu-kvm-5.2.0-14.el8
2021-03-22 06:54:27 +00:00
From c029d041853805ba612d27886f769c0e004c35e6 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Mon, 8 Mar 2021 10:48:58 -0500
Subject: [PATCH 01/15] scsi-disk: move scsi_handle_rw_error earlier
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Paolo Bonzini <pbonzini@redhat.com>
Message-id: <20210308104902.149906-2-pbonzini@redhat.com>
Patchwork-id: 101307
O-Subject: [RHEL-AV-8.4.0 qemu-kvm PATCH 1/5] scsi-disk: move scsi_handle_rw_error earlier
Bugzilla: 1927530
RH-Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
RH-Acked-by: Laszlo Ersek <lersek@redhat.com>
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Remove the forward declaration.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit f95f61c2c9618fae7d8ea4c1d63e7416884bad52)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/scsi/scsi-disk.c | 168 ++++++++++++++++++++++----------------------
1 file changed, 83 insertions(+), 85 deletions(-)
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index 90841ad791..cecdea2640 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -110,8 +110,6 @@ struct SCSIDiskState {
uint16_t rotation_rate;
};
-static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed);
-
static void scsi_free_request(SCSIRequest *req)
{
SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
@@ -181,6 +179,89 @@ static void scsi_disk_load_request(QEMUFile *f, SCSIRequest *req)
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
}
+/*
+ * scsi_handle_rw_error has two return values. False means that the error
+ * must be ignored, true means that the error has been processed and the
+ * caller should not do anything else for this request. Note that
+ * scsi_handle_rw_error always manages its reference counts, independent
+ * of the return value.
+ */
+static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed)
+{
+ bool is_read = (r->req.cmd.mode == SCSI_XFER_FROM_DEV);
+ SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
+ SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s));
+ BlockErrorAction action = blk_get_error_action(s->qdev.conf.blk,
+ is_read, error);
+
+ if (action == BLOCK_ERROR_ACTION_REPORT) {
+ if (acct_failed) {
+ block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
+ }
+ switch (error) {
+ case 0:
+ /* A passthrough command has run and has produced sense data; check
+ * whether the error has to be handled by the guest or should rather
+ * pause the host.
+ */
+ assert(r->status && *r->status);
+ if (scsi_sense_buf_is_guest_recoverable(r->req.sense, sizeof(r->req.sense))) {
+ /* These errors are handled by guest. */
+ sdc->update_sense(&r->req);
+ scsi_req_complete(&r->req, *r->status);
+ return true;
+ }
+ error = scsi_sense_buf_to_errno(r->req.sense, sizeof(r->req.sense));
+ break;
+#ifdef CONFIG_LINUX
+ /* These errno mapping are specific to Linux. For more information:
+ * - scsi_decide_disposition in drivers/scsi/scsi_error.c
+ * - scsi_result_to_blk_status in drivers/scsi/scsi_lib.c
+ * - blk_errors[] in block/blk-core.c
+ */
+ case EBADE:
+ /* DID_NEXUS_FAILURE -> BLK_STS_NEXUS. */
+ scsi_req_complete(&r->req, RESERVATION_CONFLICT);
+ break;
+ case ENODATA:
+ /* DID_MEDIUM_ERROR -> BLK_STS_MEDIUM. */
+ scsi_check_condition(r, SENSE_CODE(READ_ERROR));
+ break;
+ case EREMOTEIO:
+ /* DID_TARGET_FAILURE -> BLK_STS_TARGET. */
+ scsi_req_complete(&r->req, HARDWARE_ERROR);
+ break;
+#endif
+ case ENOMEDIUM:
+ scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
+ break;
+ case ENOMEM:
+ scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE));
+ break;
+ case EINVAL:
+ scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
+ break;
+ case ENOSPC:
+ scsi_check_condition(r, SENSE_CODE(SPACE_ALLOC_FAILED));
+ break;
+ default:
+ scsi_check_condition(r, SENSE_CODE(IO_ERROR));
+ break;
+ }
+ }
+
+ blk_error_action(s->qdev.conf.blk, action, is_read, error);
+ if (action == BLOCK_ERROR_ACTION_IGNORE) {
+ scsi_req_complete(&r->req, 0);
+ return true;
+ }
+
+ if (action == BLOCK_ERROR_ACTION_STOP) {
+ scsi_req_retry(&r->req);
+ }
+ return true;
+}
+
static bool scsi_disk_req_check_error(SCSIDiskReq *r, int ret, bool acct_failed)
{
if (r->req.io_canceled) {
@@ -427,89 +508,6 @@ static void scsi_read_data(SCSIRequest *req)
}
}
-/*
- * scsi_handle_rw_error has two return values. False means that the error
- * must be ignored, true means that the error has been processed and the
- * caller should not do anything else for this request. Note that
- * scsi_handle_rw_error always manages its reference counts, independent
- * of the return value.
- */
-static bool scsi_handle_rw_error(SCSIDiskReq *r, int error, bool acct_failed)
-{
- bool is_read = (r->req.cmd.mode == SCSI_XFER_FROM_DEV);
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- SCSIDiskClass *sdc = (SCSIDiskClass *) object_get_class(OBJECT(s));
- BlockErrorAction action = blk_get_error_action(s->qdev.conf.blk,
- is_read, error);
-
- if (action == BLOCK_ERROR_ACTION_REPORT) {
- if (acct_failed) {
- block_acct_failed(blk_get_stats(s->qdev.conf.blk), &r->acct);
- }
- switch (error) {
- case 0:
- /* A passthrough command has run and has produced sense data; check
- * whether the error has to be handled by the guest or should rather
- * pause the host.
- */
- assert(r->status && *r->status);
- if (scsi_sense_buf_is_guest_recoverable(r->req.sense, sizeof(r->req.sense))) {
- /* These errors are handled by guest. */
- sdc->update_sense(&r->req);
- scsi_req_complete(&r->req, *r->status);
- return true;
- }
- error = scsi_sense_buf_to_errno(r->req.sense, sizeof(r->req.sense));
- break;
-#ifdef CONFIG_LINUX
- /* These errno mapping are specific to Linux. For more information:
- * - scsi_decide_disposition in drivers/scsi/scsi_error.c
- * - scsi_result_to_blk_status in drivers/scsi/scsi_lib.c
- * - blk_errors[] in block/blk-core.c
- */
- case EBADE:
- /* DID_NEXUS_FAILURE -> BLK_STS_NEXUS. */
- scsi_req_complete(&r->req, RESERVATION_CONFLICT);
- break;
- case ENODATA:
- /* DID_MEDIUM_ERROR -> BLK_STS_MEDIUM. */
- scsi_check_condition(r, SENSE_CODE(READ_ERROR));
- break;
- case EREMOTEIO:
- /* DID_TARGET_FAILURE -> BLK_STS_TARGET. */
- scsi_req_complete(&r->req, HARDWARE_ERROR);
- break;
-#endif
- case ENOMEDIUM:
- scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
- break;
- case ENOMEM:
- scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE));
- break;
- case EINVAL:
- scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
- break;
- case ENOSPC:
- scsi_check_condition(r, SENSE_CODE(SPACE_ALLOC_FAILED));
- break;
- default:
- scsi_check_condition(r, SENSE_CODE(IO_ERROR));
- break;
- }
- }
-
- blk_error_action(s->qdev.conf.blk, action, is_read, error);
- if (action == BLOCK_ERROR_ACTION_IGNORE) {
- scsi_req_complete(&r->req, 0);
- return true;
- }
-
- if (action == BLOCK_ERROR_ACTION_STOP) {
- scsi_req_retry(&r->req);
- }
- return true;
-}
-
static void scsi_write_complete_noio(SCSIDiskReq *r, int ret)
{
uint32_t n;
--
2.27.0
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