Intel IXP400 HSS Packetized Operation, Channelized Disconnect, Packetized Connect and Enable

Intel® IXP400 Software

Access-Layer Components: HSS-Access (IxHssAcc) API

13.5.3Channelized Disconnect

When the channelized service is not needed any more on a particular HSS port, ixHssAccChanPortDisable() is called to stop the channelized service on that port, then ixHssAccChanDisconnect() is called to disconnect the service.

13.6HSS Packetized Operation

13.6.1Packetized Connect and Enable

ixHssAccPktPortConnect()

After the HSS component is configured, ixHssAccPktPortConnect() has to be called to connect the client application with the packetized services. This function is responsible for connecting a client to one of the four available packetized ports on a configured HSS port.

There are four packetized services per HSS port, so this function has to be called once per packetized service.

Note: This functions structures have changed significantly in software release 2.0 and the function is no longer directly compatible with previous versions.

The client uses this function to:

•Pass data structures to configure the HDLC coprocessor

•Register a Rx call back function for Rx data processing

•Register a callback function to request more Rx buffers

•Register a callback function to indicate Tx done

•Pass a flag to turn HDLC processing on or off

The HDLC configuration structure sets up:

•What to transmit when an HDLC port is idle

•HDLC data endianness

•CRC type to be used for this HDLC port.

The parameters for ixHssAccPktPortConnect() include:

•IxHssAccHssPort hssPortId — The HSS port ID. There are two identical ports (0-1).

•IxHssAccHdlcPort hdlcPortId — This is the number of the HDLC port and it corresponds to the physical E1/T1 trunk (i.e., 0, 1, 2, 3).

•BOOL hdlcFraming — This value determines whether the service will use HDLC data or the raw data type (i.e., no HDLC processing).

•IxHssAccHdlcMode hdlcMode — This structure contains 56Kbps, HDLC-mode configuration parameters.

•BOOL hdlcBitInvert — This value determines whether bit inversion will occur between HDLC and HSS coprocessors (i.e., post-HDLC processing for transmit and pre-HDLC processing for receive, for the specified HDLC Termination Point).

April 2005	IXP400 Software Version 2.0	Programmer’s Guide
204	Document Number: 252539, Revision: 007