Advanced Communications Controller B.03.32.00 Release Notes

Patches and Fixes for this Version

Chapter 1 11

• JAGad13821

Symptoms: ZTERM's TX behaves inconsistently when out of system buffers.

Defect/Fix: In QIP test LDM043, it uses ZTERM TX to send a large number of messages to

exhaust all ZCOM buffers (e.g. TX <ZLU> 1000 030000). In some systems, ZTERM's TX got

suspended - this is expected. But in some systems, ZTERM's TX returned with a ZCOM

error: “Error on ZSEND: Not enough system free buffers”.

• JAGad15652

Symptoms: Zmasterd takes up to 7 minutes to startup the ZCOM subsystem with large

I/O systems.

Defect/Fix: During ZCOM subsystem startup, ioscan is run to verify that the cards

installed in the system match those configured through the TTGEN configuration (.answ)

file. Most of the time taken during startup is spent waiting for ioscan to scan the

backplane for hardware. The fix is not to scan the physical backplane, but simple to

retrieve the hardware information from the kernel that was gathered at system bootup.

The code now schedules ioscan with the parameters of “-FkC acc” instead of just “-F”.

• JAGad15656

Symptoms: 'x25init' command fails with the following message in Nettl log, when 200

SVCs are configured on all the 8 ports.

N2Z: The zconfig() call to create a new L3 ZLU has unexpectedly failed

with error -15. Unable to startup the X.25 line (Mux = 0, Port 7,

Subc 0)!

Defect/Fix: The problem is caused by not having enough ZCOM Terminal entries

configured in the .answ file. The fix is to tune these parameters in .answ file and then

start-up the ZCOM subsystem.

• JAGad21198

Symptoms: System panics with a Data Page Fault.

Defect/Fix: The problem happened because a NULL pointer was referenced. To fix this

problem, a check has been added if the pointer is NULL.

• JAGad21596

Symptoms: ZTERM mistakenly takes msg request code 11 (ZCOM_MRQCODE_DEL) as

“port configuration” to report zport return status (by x25stat API). The correct request

code should be 14 (ZCOM_MRQCODE_PORT).