Hello Sathya,
thanks for your patch review! Below is the updated version with DiagPending
replaced by ioc_reset_in_progress.
On dual port 53C1030 based HBAs such as the LSI22320R, the hard reset handler
will cause DID_SOFT_ERROR for innocent devices on the second port.
Introduce a mpt_SoftResetHandler() which doesn't cause this issue and
slightly improve mpt_HardResetHandler(). Replace DiagPending by
ioc_reset_in_progress to check for running resets.
This is mostly a backport of the fusion-4.x driver available from LSI.
Signed-off-by: Bernd Schubert <bs@xxxxxxxxx>
drivers/message/fusion/mptbase.c | 211 ++++++++++++++++++++++++----
drivers/message/fusion/mptbase.h | 11 +
drivers/message/fusion/mptctl.c | 7
drivers/message/fusion/mptsas.c | 4
drivers/message/fusion/mptbase.c | 218 ++++++++++++++++++++++++++++++++------
drivers/message/fusion/mptbase.h | 11 +
drivers/message/fusion/mptctl.c | 8 -
drivers/message/fusion/mptsas.c | 4
drivers/message/fusion/mptscsih.c | 39 +++---
5 files changed, 226 insertions(+), 54 deletions(-)
Index: linux-2.6/drivers/message/fusion/mptbase.c
===================================================================
--- linux-2.6.orig/drivers/message/fusion/mptbase.c
+++ linux-2.6/drivers/message/fusion/mptbase.c
@@ -5945,7 +5945,7 @@ mpt_timer_expired(unsigned long data)
dcprintk(ioc, printk(MYIOC_s_DEBUG_FMT "mpt_timer_expired! \n", ioc->name));
/* Perform a FW reload */
- if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0)
+ if (mpt_SoftHardResetHandler(ioc, NO_SLEEP) < 0)
printk(MYIOC_s_WARN_FMT "Firmware Reload FAILED!\n", ioc->name);
/* No more processing.
@@ -6319,6 +6319,134 @@ mpt_print_ioc_summary(MPT_ADAPTER *ioc,
/*
* Reset Handling
*/
+
+/**
+ * mpt_SoftResetHandler - Issues a less expensive reset
+ * @ioc: Pointer to MPT_ADAPTER structure
+ * @sleepFlag: Indicates if sleep or schedule must be called.
+
+ *
+ * Returns 0 for SUCCESS or -1 if FAILED.
+ *
+ * Message Unit Reset - instructs the IOC to reset the Reply Post and
+ * Free FIFO's. All the Message Frames on Reply Free FIFO are discarded.
+ * All posted buffers are freed, and event notification is turned off.
+ * IOC doesnt reply to any outstanding request. This will transfer IOC
+ * to READY state.
+ **/
+static int
+mpt_SoftResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
+{
+ int rc;
+ int ii;
+ u8 cb_idx;
+ unsigned long flags;
+ u32 ioc_state;
+ unsigned long time_count;
+
+ dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "SoftResetHandler Entered!\n",
+ ioc->name));
+
+ ioc_state = mpt_GetIocState(ioc, 0) & MPI_IOC_STATE_MASK;
+ if (ioc_state == MPI_IOC_STATE_FAULT ||
+ ioc_state == MPI_IOC_STATE_RESET) {
+ dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
+ "skipping, either in FAULT or RESET state!\n", ioc->name));
+ return -1;
+ }
+
+ spin_lock_irqsave(&ioc->diagLock, flags);
+ if (ioc->ioc_reset_in_progress) {
+ spin_unlock_irqrestore(&ioc->diagLock, flags);
+ return -1;
+ }
+ ioc->ioc_reset_in_progress = 1;
+ spin_unlock_irqrestore(&ioc->diagLock, flags);
+
+ rc = -1;
+
+ for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) {
+ if (MptResetHandlers[cb_idx])
+ mpt_signal_reset(cb_idx, ioc, MPT_IOC_SETUP_RESET);
+ }
+
+ /* Disable reply interrupts (also blocks FreeQ) */
+ CHIPREG_WRITE32(&ioc->chip->IntMask, 0xFFFFFFFF);
+ ioc->active = 0;
+ time_count = jiffies;
+ rc = SendIocReset(ioc, MPI_FUNCTION_IOC_MESSAGE_UNIT_RESET, sleepFlag);
+ if (rc != 0)
+ goto out;
+
+ /* MPT_IOC_PRE_RESET clears pending requests, but MUR
+ * (MPI_FUNCTION_IOC_MESSAGE_UNIT_RESET) tries to find a DMA request and
+ * will fault the fw if no request is found. So we need to do
+ * MPT_IOC_PRE_RESET after MUR */
+ for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) {
+ if (MptResetHandlers[cb_idx])
+ mpt_signal_reset(cb_idx, ioc, MPT_IOC_PRE_RESET);
+ }
+
+ ioc_state = mpt_GetIocState(ioc, 0) & MPI_IOC_STATE_MASK;
+ if (ioc_state != MPI_IOC_STATE_READY)
+ goto out;
+
+ for (ii = 0; ii < 5; ii++) {
+ /* Get IOC facts! Allow 5 retries */
+ rc = GetIocFacts(ioc, sleepFlag, MPT_HOSTEVENT_IOC_RECOVER);
+ if (rc == 0)
+ break;
+ if (sleepFlag == CAN_SLEEP)
+ msleep(100);
+ else
+ mdelay(100);
+ }
+ if (ii == 5)
+ goto out;
+
+ rc = PrimeIocFifos(ioc);
+ if (rc != 0)
+ goto out;
+
+ rc = SendIocInit(ioc, sleepFlag);
+ if (rc != 0)
+ goto out;
+
+ rc = SendEventNotification(ioc, 1);
+ if (rc != 0)
+ goto out;
+
+ if (ioc->hard_resets < -1)
+ ioc->hard_resets++;
+
+ /*
+ * At this point, we know soft reset succeeded.
+ */
+
+ ioc->active = 1;
+ CHIPREG_WRITE32(&ioc->chip->IntMask, MPI_HIM_DIM);
+
+ out:
+ spin_lock_irqsave(&ioc->diagLock, flags);
+ ioc->ioc_reset_in_progress = 0;
+ ioc->taskmgmt_quiesce_io = 0;
+ ioc->taskmgmt_in_progress = 0;
+ spin_unlock_irqrestore(&ioc->diagLock, flags);
+
+ if (ioc->active) { /* otherwise, hard reset coming */
+ for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) {
+ if (MptResetHandlers[cb_idx])
+ mpt_signal_reset(cb_idx, ioc, MPT_IOC_POST_RESET);
+ }
+ }
+
+ printk(MYIOC_s_INFO_FMT "SoftResetHandler: completed (%d seconds): %s\n",
+ ioc->name, jiffies_to_msecs(jiffies - time_count)/1000,
+ ((rc == 0) ? "SUCCESS" : "FAILED"));
+
+ return rc;
+}
+
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
* mpt_HardResetHandler - Generic reset handler
@@ -6340,9 +6468,10 @@ int
mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
{
int rc;
+ u8 cb_idx;
unsigned long flags;
+ unsigned long time_count;
- dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "HardResetHandler Entered!\n", ioc->name));
#ifdef MFCNT
printk(MYIOC_s_INFO_FMT "HardResetHandler Entered!\n", ioc->name);
printk("MF count 0x%x !\n", ioc->mfcnt);
@@ -6352,12 +6481,14 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, i
* mpt_do_ioc_recovery at any instant in time.
*/
spin_lock_irqsave(&ioc->diagLock, flags);
- if ((ioc->diagPending) || (ioc->alt_ioc && ioc->alt_ioc->diagPending)){
+ if (ioc->ioc_reset_in_progress
+ || (ioc->alt_ioc && ioc->alt_ioc->ioc_reset_in_progress)) {
spin_unlock_irqrestore(&ioc->diagLock, flags);
return 0;
- } else {
- ioc->diagPending = 1;
}
+ ioc->ioc_reset_in_progress = 1;
+ if (ioc->alt_ioc)
+ ioc->alt_ioc->ioc_reset_in_progress = 1;
spin_unlock_irqrestore(&ioc->diagLock, flags);
/* FIXME: If do_ioc_recovery fails, repeat....
@@ -6368,42 +6499,70 @@ mpt_HardResetHandler(MPT_ADAPTER *ioc, i
* Prevents timeouts occurring during a diagnostic reset...very bad.
* For all other protocol drivers, this is a no-op.
*/
- {
- u8 cb_idx;
- int r = 0;
-
- for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) {
- if (MptResetHandlers[cb_idx]) {
- dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Calling IOC reset_setup handler #%d\n",
- ioc->name, cb_idx));
- r += mpt_signal_reset(cb_idx, ioc, MPT_IOC_SETUP_RESET);
- if (ioc->alt_ioc) {
- dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Calling alt-%s setup reset handler #%d\n",
- ioc->name, ioc->alt_ioc->name, cb_idx));
- r += mpt_signal_reset(cb_idx, ioc->alt_ioc, MPT_IOC_SETUP_RESET);
- }
- }
+ for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) {
+ if (MptResetHandlers[cb_idx]) {
+ mpt_signal_reset(cb_idx, ioc, MPT_IOC_SETUP_RESET);
+ if (ioc->alt_ioc)
+ mpt_signal_reset(cb_idx, ioc->alt_ioc, MPT_IOC_SETUP_RESET);
}
}
- if ((rc = mpt_do_ioc_recovery(ioc, MPT_HOSTEVENT_IOC_RECOVER, sleepFlag)) != 0) {
- printk(MYIOC_s_WARN_FMT "Cannot recover rc = %d!\n", ioc->name, rc);
+ time_count = jiffies;
+ rc = mpt_do_ioc_recovery(ioc, MPT_HOSTEVENT_IOC_RECOVER, sleepFlag);
+ if (rc != 0) {
+ printk(KERN_WARNING MYNAM ": WARNING - (%d) Cannot recover %s\n",
+ rc, ioc->name);
+ } else {
+ if (ioc->hard_resets < -1)
+ ioc->hard_resets++;
}
- ioc->reload_fw = 0;
- if (ioc->alt_ioc)
- ioc->alt_ioc->reload_fw = 0;
spin_lock_irqsave(&ioc->diagLock, flags);
- ioc->diagPending = 0;
- if (ioc->alt_ioc)
- ioc->alt_ioc->diagPending = 0;
+ ioc->ioc_reset_in_progress = 0;
+ ioc->taskmgmt_quiesce_io = 0;
+ ioc->taskmgmt_in_progress = 0;
+ if (ioc->alt_ioc) {
+ ioc->alt_ioc->ioc_reset_in_progress = 0;
+ ioc->alt_ioc->taskmgmt_quiesce_io = 0;
+ ioc->alt_ioc->taskmgmt_in_progress = 0;
+ }
spin_unlock_irqrestore(&ioc->diagLock, flags);
- dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "HardResetHandler rc = %d!\n", ioc->name, rc));
+ for (cb_idx = MPT_MAX_PROTOCOL_DRIVERS-1; cb_idx; cb_idx--) {
+ if (MptResetHandlers[cb_idx]) {
+ mpt_signal_reset(cb_idx, ioc, MPT_IOC_POST_RESET);
+ if (ioc->alt_ioc)
+ mpt_signal_reset(cb_idx, ioc->alt_ioc, MPT_IOC_POST_RESET);
+ }
+ }
+ dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "HardResetHandler: completed (%d seconds): %s\n",
+ ioc->name, jiffies_to_msecs(jiffies - time_count)/1000,
+ ((rc == 0) ? "SUCCESS" : "FAILED")));
return rc;
}
+/**
+ * mpt_SoftHardResetHandler - Generic reset handler
+ * @ioc: Pointer to MPT_ADAPTER structure
+ * @sleepFlag: Indicates if sleep or schedule must be called.
+ *
+ * First try to do a soft reset and if this fails, call the
+ * hard-reset-handler
+ */
+int
+mpt_SoftHardResetHandler(MPT_ADAPTER *ioc, int sleepFlag)
+{
+ int rc;
+
+ rc = mpt_SoftResetHandler(ioc, sleepFlag);
+ if (rc)
+ rc = mpt_HardResetHandler(ioc, sleepFlag);
+
+ return rc;
+}
+
+
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
static void
EventDescriptionStr(u8 event, u32 evData0, char *evStr)
@@ -7561,6 +7720,7 @@ EXPORT_SYMBOL(mpt_verify_adapter);
EXPORT_SYMBOL(mpt_GetIocState);
EXPORT_SYMBOL(mpt_print_ioc_summary);
EXPORT_SYMBOL(mpt_HardResetHandler);
+EXPORT_SYMBOL(mpt_SoftHardResetHandler);
EXPORT_SYMBOL(mpt_config);
EXPORT_SYMBOL(mpt_findImVolumes);
EXPORT_SYMBOL(mpt_alloc_fw_memory);
Index: linux-2.6/drivers/message/fusion/mptbase.h
===================================================================
--- linux-2.6.orig/drivers/message/fusion/mptbase.h
+++ linux-2.6/drivers/message/fusion/mptbase.h
@@ -701,6 +701,9 @@ typedef struct _MPT_ADAPTER
MPT_SAS_MGMT sas_mgmt;
struct work_struct sas_persist_task;
+ int taskmgmt_in_progress;
+ u8 taskmgmt_quiesce_io;
+
struct work_struct fc_setup_reset_work;
struct list_head fc_rports;
struct work_struct fc_lsc_work;
@@ -709,6 +712,11 @@ typedef struct _MPT_ADAPTER
struct work_struct fc_rescan_work;
char fc_rescan_work_q_name[20];
struct workqueue_struct *fc_rescan_work_q;
+
+ unsigned long hard_resets; /* driver forced bus resets count */
+ unsigned long soft_resets; /* fw/external bus resets count */
+ u8 ioc_reset_in_progress;
+
struct scsi_cmnd **ScsiLookup;
spinlock_t scsi_lookup_lock;
@@ -844,8 +852,6 @@ typedef struct _MPT_SCSI_HOST {
MPT_FRAME_HDR *cmdPtr; /* Ptr to nonOS request */
struct scsi_cmnd *abortSCpnt;
MPT_LOCAL_REPLY localReply; /* internal cmd reply struct */
- unsigned long hard_resets; /* driver forced bus resets count */
- unsigned long soft_resets; /* fw/external bus resets count */
unsigned long timeouts; /* cmd timeouts */
ushort sel_timeout[MPT_MAX_FC_DEVICES];
char *info_kbuf;
@@ -916,6 +922,7 @@ extern int mpt_verify_adapter(int iocid
extern u32 mpt_GetIocState(MPT_ADAPTER *ioc, int cooked);
extern void mpt_print_ioc_summary(MPT_ADAPTER *ioc, char *buf, int *size, int len, int showlan);
extern int mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag);
+extern int mpt_SoftHardResetHandler(MPT_ADAPTER *ioc, int sleepFlag);
extern int mpt_config(MPT_ADAPTER *ioc, CONFIGPARMS *cfg);
extern int mpt_alloc_fw_memory(MPT_ADAPTER *ioc, int size);
extern void mpt_free_fw_memory(MPT_ADAPTER *ioc);
Index: linux-2.6/drivers/message/fusion/mptscsih.c
===================================================================
--- linux-2.6.orig/drivers/message/fusion/mptscsih.c
+++ linux-2.6/drivers/message/fusion/mptscsih.c
@@ -1605,7 +1605,7 @@ mptscsih_TMHandler(MPT_SCSI_HOST *hd, u8
"TM Handler for type=%x: IOC Not operational (0x%x)!\n",
ioc->name, type, ioc_raw_state);
printk(MYIOC_s_WARN_FMT " Issuing HardReset!!\n", ioc->name);
- if (mpt_HardResetHandler(ioc, CAN_SLEEP) < 0)
+ if (mpt_SoftHardResetHandler(ioc, CAN_SLEEP) < 0)
printk(MYIOC_s_WARN_FMT "TMHandler: HardReset "
"FAILED!!\n", ioc->name);
return FAILED;
@@ -1621,8 +1621,8 @@ mptscsih_TMHandler(MPT_SCSI_HOST *hd, u8
/* Isse the Task Mgmt request.
*/
- if (hd->hard_resets < -1)
- hd->hard_resets++;
+ if (ioc->hard_resets < -1)
+ ioc->hard_resets++;
rc = mptscsih_IssueTaskMgmt(hd, type, channel, id, lun,
ctx2abort, timeout);
@@ -1724,7 +1724,7 @@ mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd
ioc, mf));
dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Calling HardReset! \n",
ioc->name));
- retval = mpt_HardResetHandler(ioc, CAN_SLEEP);
+ retval = mpt_SoftHardResetHandler(ioc, CAN_SLEEP);
dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rc=%d \n",
ioc->name, retval));
goto fail_out;
@@ -1998,11 +1998,12 @@ int
mptscsih_host_reset(struct scsi_cmnd *SCpnt)
{
MPT_SCSI_HOST * hd;
- int retval;
+ int retval, status;
MPT_ADAPTER *ioc;
/* If we can't locate the host to reset, then we failed. */
- if ((hd = shost_priv(SCpnt->device->host)) == NULL){
+ hd = shost_priv(SCpnt->device->host);
+ if (hd == NULL) {
printk(KERN_ERR MYNAM ": host reset: "
"Can't locate host! (sc=%p)\n", SCpnt);
return FAILED;
@@ -2015,21 +2016,23 @@ mptscsih_host_reset(struct scsi_cmnd *SC
/* If our attempts to reset the host failed, then return a failed
* status. The host will be taken off line by the SCSI mid-layer.
*/
- if (mpt_HardResetHandler(ioc, CAN_SLEEP) < 0) {
- retval = FAILED;
- } else {
+ retval = mpt_SoftHardResetHandler(ioc, CAN_SLEEP);
+
+ if (retval < 0)
+ status = FAILED;
+ else {
/* Make sure TM pending is cleared and TM state is set to
* NONE.
*/
- retval = 0;
+ status = SUCCESS;
hd->tmPending = 0;
hd->tmState = TM_STATE_NONE;
}
printk(MYIOC_s_INFO_FMT "host reset: %s (sc=%p)\n",
- ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
+ ioc->name, ((status == SUCCESS) ? "SUCCESS" : "FAILED"), SCpnt);
- return retval;
+ return status;
}
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
@@ -2218,7 +2221,7 @@ mptscsih_taskmgmt_complete(MPT_ADAPTER *
*/
if (iocstatus == MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED ||
hd->cmdPtr)
- if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0)
+ if (mpt_SoftHardResetHandler(ioc, NO_SLEEP) < 0)
printk(MYIOC_s_WARN_FMT " Firmware Reload FAILED!!\n", ioc->name);
break;
@@ -2740,8 +2743,8 @@ mptscsih_event_process(MPT_ADAPTER *ioc,
break;
case MPI_EVENT_IOC_BUS_RESET: /* 04 */
case MPI_EVENT_EXT_BUS_RESET: /* 05 */
- if (hd && (ioc->bus_type == SPI) && (hd->soft_resets < -1))
- hd->soft_resets++;
+ if (hd && (ioc->bus_type == SPI) && (ioc->soft_resets < -1))
+ ioc->soft_resets++;
break;
case MPI_EVENT_LOGOUT: /* 09 */
/* FIXME! */
@@ -2979,9 +2982,9 @@ mptscsih_timer_expired(unsigned long dat
*/
} else {
/* Perform a FW reload */
- if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0) {
- printk(MYIOC_s_WARN_FMT "Firmware Reload FAILED!\n", ioc->name);
- }
+ if (mpt_SoftHardResetHandler(ioc, NO_SLEEP) < 0)
+ printk(MYIOC_s_WARN_FMT "Firmware Reload FAILED!\n",
+ ioc->name);
}
} else {
/* This should NEVER happen */
Index: linux-2.6/drivers/message/fusion/mptctl.c
===================================================================
--- linux-2.6.orig/drivers/message/fusion/mptctl.c
+++ linux-2.6/drivers/message/fusion/mptctl.c
@@ -323,7 +323,7 @@ static void mptctl_timeout_expired (MPT_
*/
dctlprintk(ioctl->ioc, printk(MYIOC_s_DEBUG_FMT "Calling HardReset! \n",
ioctl->ioc->name));
- mpt_HardResetHandler(ioctl->ioc, CAN_SLEEP);
+ mpt_SoftHardResetHandler(ioctl->ioc, CAN_SLEEP);
}
return;
@@ -678,6 +678,8 @@ static int mptctl_do_reset(unsigned long
dctlprintk(iocp, printk(MYIOC_s_DEBUG_FMT "mptctl_do_reset called.\n",
iocp->name));
+ /* We can't use the soft reset handler here, since only the hard
+ * reset handler can clear possible fw faults */
if (mpt_HardResetHandler(iocp, CAN_SLEEP) != 0) {
printk (MYIOC_s_ERR_FMT "%s@%d::mptctl_do_reset - reset failed.\n",
iocp->name, __FILE__, __LINE__);
@@ -2465,8 +2467,8 @@ mptctl_hp_hostinfo(unsigned long arg, un
MPT_SCSI_HOST *hd = shost_priv(ioc->sh);
if (hd && (cim_rev == 1)) {
- karg.hard_resets = hd->hard_resets;
- karg.soft_resets = hd->soft_resets;
+ karg.hard_resets = ioc->hard_resets;
+ karg.soft_resets = ioc->soft_resets;
karg.timeouts = hd->timeouts;
}
}
Index: linux-2.6/drivers/message/fusion/mptsas.c
===================================================================
--- linux-2.6.orig/drivers/message/fusion/mptsas.c
+++ linux-2.6/drivers/message/fusion/mptsas.c
@@ -1167,7 +1167,7 @@ static int mptsas_phy_reset(struct sas_p
if (!timeleft) {
/* On timeout reset the board */
mpt_free_msg_frame(ioc, mf);
- mpt_HardResetHandler(ioc, CAN_SLEEP);
+ mpt_SoftHardResetHandler(ioc, CAN_SLEEP);
error = -ETIMEDOUT;
goto out_unlock;
}
@@ -1345,7 +1345,7 @@ static int mptsas_smp_handler(struct Scs
if (!timeleft) {
printk(MYIOC_s_ERR_FMT "%s: smp timeout!\n", ioc->name, __func__);
/* On timeout reset the board */
- mpt_HardResetHandler(ioc, CAN_SLEEP);
+ mpt_SoftHardResetHandler(ioc, CAN_SLEEP);
ret = -ETIMEDOUT;
goto unmap;
}
--
Bernd Schubert
Q-Leap Networks GmbH
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