#define VSS_MINOR 0
#define VSS_VERSION (VSS_MAJOR << 16 | VSS_MINOR)
-#define VSS_USERSPACE_TIMEOUT (msecs_to_jiffies(10 * 1000))
+/*
+ * Timeout values are based on expecations from host
+ */
+#define VSS_FREEZE_TIMEOUT (15 * 60)
/*
* Global state maintained for transaction that is being processed. For a class
default:
return -EINVAL;
}
- pr_debug("VSS: userspace daemon ver. %d connected\n", dm_reg_value);
+ pr_info("VSS: userspace daemon ver. %d connected\n", dm_reg_value);
return 0;
}
{
struct hv_vss_msg *vss_msg = (struct hv_vss_msg *)msg;
- if (len != sizeof(*vss_msg))
+ if (len != sizeof(*vss_msg)) {
+ pr_debug("VSS: Message size does not match length\n");
return -EINVAL;
+ }
if (vss_msg->vss_hdr.operation == VSS_OP_REGISTER ||
vss_msg->vss_hdr.operation == VSS_OP_REGISTER1) {
* Don't process registration messages if we're in the middle
* of a transaction processing.
*/
- if (vss_transaction.state > HVUTIL_READY)
+ if (vss_transaction.state > HVUTIL_READY) {
+ pr_debug("VSS: Got unexpected registration request\n");
return -EINVAL;
+ }
+
return vss_handle_handshake(vss_msg);
} else if (vss_transaction.state == HVUTIL_USERSPACE_REQ) {
vss_transaction.state = HVUTIL_USERSPACE_RECV;
}
} else {
/* This is a spurious call! */
- pr_warn("VSS: Transaction not active\n");
+ pr_debug("VSS: Transaction not active\n");
return -EINVAL;
}
return 0;
struct hv_vss_msg *vss_msg;
/* The transaction state is wrong. */
- if (vss_transaction.state != HVUTIL_HOSTMSG_RECEIVED)
+ if (vss_transaction.state != HVUTIL_HOSTMSG_RECEIVED) {
+ pr_debug("VSS: Unexpected attempt to send to daemon\n");
return;
+ }
vss_msg = kzalloc(sizeof(*vss_msg), GFP_KERNEL);
if (!vss_msg)
vss_transaction.state = HVUTIL_USERSPACE_REQ;
- schedule_delayed_work(&vss_timeout_work, VSS_USERSPACE_TIMEOUT);
+ schedule_delayed_work(&vss_timeout_work, op == VSS_OP_FREEZE ?
+ VSS_FREEZE_TIMEOUT * HZ : HV_UTIL_TIMEOUT * HZ);
rc = hvutil_transport_send(hvt, vss_msg, sizeof(*vss_msg), NULL);
if (rc) {
case VSS_OP_HOT_BACKUP:
if (vss_transaction.state < HVUTIL_READY) {
/* Userspace is not registered yet */
+ pr_debug("VSS: Not ready for request.\n");
vss_respond_to_host(HV_E_FAIL);
return;
}
+
+ pr_debug("VSS: Received request for op code: %d\n",
+ vss_transaction.msg->vss_hdr.operation);
vss_transaction.state = HVUTIL_HOSTMSG_RECEIVED;
vss_send_op();
return;
hvt = hvutil_transport_init(vss_devname, CN_VSS_IDX, CN_VSS_VAL,
vss_on_msg, vss_on_reset);
- if (!hvt)
+ if (!hvt) {
+ pr_warn("VSS: Failed to initialize transport\n");
return -EFAULT;
+ }
return 0;
}