Reads particular qeth attribute and returns its value as a string.

Parameters:

devname
attrib	attribute name as exported by qeth module

Return value:

attribute value or nil in case of error.

Reads attributes for particular qeth based network device.

Returned map is compatible with similar map used for storing sysconfig values used elswhere in the code. As a consequence, boolean values are stored as strings with yes/no value.

Currently loaded attributes are: QETH_LAYER2 yes/no string. QETH_PORTNAME portname or empty string QETH_PORTNUMBER portnumber or empty string QETH_CHANIDS read/write/control channel ids separated by space (compatibility requirement)

see lsqeth for inspiration

Parameters:

devname

Return value:

a map with keys QETH_LAYER2, QETH_PORTNAME, QETH_PORTNUMBER, QETH_CHANIDS