Author: sephe
Date: Thu Jan 5 06:21:14 2017
New Revision: 311374
URL: https://svnweb.freebsd.org/changeset/base/311374
Log:
MFC 309726,309728
309726
hyperv/storvsc: Fix the SCSI disk attachment issue.
On pre-WS2016 Hyper-V, if the only LUNs > 7 are used, then all disks
fails to attach. Mainly because those versions of Hyper-V do not set
SRB_STATUS properly and deliver junky INQUERY responses.
Submitted by: Hongjiang Zhang <honzhan microsoft com>
Reported by: Hongxiong Xian <v-hoxian microsoft com>
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8724
309728
hyperv/storvsc: Minor style changes; no functional changes.
Reported by: rpokala
Sponsored by: Microsoft
Modified:
stable/11/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
==============================================================================
--- stable/11/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c Thu Jan 5
06:19:07 2017 (r311373)
+++ stable/11/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c Thu Jan 5
06:21:14 2017 (r311374)
@@ -2053,6 +2053,19 @@ create_storvsc_request(union ccb *ccb, s
return(0);
}
+static uint32_t
+is_scsi_valid(const struct scsi_inquiry_data *inq_data)
+{
+ u_int8_t type;
+
+ type = SID_TYPE(inq_data);
+ if (type == T_NODEVICE)
+ return (0);
+ if (SID_QUAL(inq_data) == SID_QUAL_BAD_LU)
+ return (0);
+ return (1);
+}
+
/**
* @brief completion function before returning to CAM
*
@@ -2071,6 +2084,7 @@ storvsc_io_done(struct hv_storvsc_reques
struct vmscsi_req *vm_srb = &reqp->vstor_packet.u.vm_srb;
bus_dma_segment_t *ori_sglist = NULL;
int ori_sg_count = 0;
+
/* destroy bounce buffer if it is used */
if (reqp->bounce_sgl_count) {
ori_sglist = (bus_dma_segment_t *)ccb->csio.data_ptr;
@@ -2125,6 +2139,7 @@ storvsc_io_done(struct hv_storvsc_reques
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
if (vm_srb->scsi_status == SCSI_STATUS_OK) {
const struct scsi_generic *cmd;
+
cmd = (const struct scsi_generic *)
((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes);
@@ -2164,32 +2179,47 @@ storvsc_io_done(struct hv_storvsc_reques
ccb->ccb_h.status |= CAM_REQ_CMP;
}
- if (cmd->opcode == INQUIRY) {
+ if (cmd->opcode == INQUIRY &&
+ vm_srb->srb_status == SRB_STATUS_SUCCESS) {
+ int resp_xfer_len, resp_buf_len, data_len;
+ uint8_t *resp_buf = (uint8_t *)csio->data_ptr;
struct scsi_inquiry_data *inq_data =
(struct scsi_inquiry_data *)csio->data_ptr;
- uint8_t *resp_buf = (uint8_t *)csio->data_ptr;
- int resp_xfer_len, resp_buf_len, data_len;
/* Get the buffer length reported by host */
resp_xfer_len = vm_srb->transfer_len;
+
/* Get the available buffer length */
resp_buf_len = resp_xfer_len >= 5 ? resp_buf[4] + 5 : 0;
data_len = (resp_buf_len < resp_xfer_len) ?
resp_buf_len : resp_xfer_len;
-
if (bootverbose && data_len >= 5) {
xpt_print(ccb->ccb_h.path, "storvsc inquiry "
"(%d) [%x %x %x %x %x ... ]\n", data_len,
resp_buf[0], resp_buf[1], resp_buf[2],
resp_buf[3], resp_buf[4]);
}
- if (vm_srb->srb_status == SRB_STATUS_SUCCESS &&
- data_len >= SHORT_INQUIRY_LENGTH) {
+ /*
+ * XXX: Manually fix the wrong response returned from
WS2012
+ */
+ if (!is_scsi_valid(inq_data) &&
+ (vmstor_proto_version ==
VMSTOR_PROTOCOL_VERSION_WIN8_1 ||
+ vmstor_proto_version ==
VMSTOR_PROTOCOL_VERSION_WIN8 ||
+ vmstor_proto_version ==
VMSTOR_PROTOCOL_VERSION_WIN7)) {
+ if (data_len >= 4 &&
+ (resp_buf[2] == 0 || resp_buf[3] == 0)) {
+ resp_buf[2] = 5; // verion=5 means SPC-3
+ resp_buf[3] = 2; // resp fmt must be 2
+ if (bootverbose)
+ xpt_print(ccb->ccb_h.path,
+ "fix version and resp fmt
for 0x%x\n",
+ vmstor_proto_version);
+ }
+ } else if (data_len >= SHORT_INQUIRY_LENGTH) {
char vendor[16];
cam_strvis(vendor, inq_data->vendor,
sizeof(inq_data->vendor), sizeof(vendor));
-
/*
* XXX: Upgrade SPC2 to SPC3 if host is WIN8 or
* WIN2012 R2 in order to support UNMAP feature.
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