Finding out the type of your network adapter

Red Hat Enterprise Linux 9.2 LPAR mode z/VM guest

Use the card_type attribute to find out the type of the network adapter through which your device is connected.

Procedure

You can find out the type of the network adapter through which your device is connected. To find out the type, read the device's card_type attribute.

To list all attributes, issue a command of the form:

# lszdev -a <device_type> <device_bus_id> --info --info

or, using sysfs:

# cat /sys/bus/ccwgroup/drivers/qeth/<device_bus_id>/card_type

The card_type attribute gives information about both the type of network adapter and the type of network link (if applicable) available at the card's ports. See Table 1 for details.

Table 1. Possible values of card_type and what they mean
This table is a complex table that maps values for card_type to the respective adapter type and link type. Multiple rows in the first column, map to the same adapter type, OSA card in OSD mode, in the second column.
Value of card_type	Adapter type	Link type
OSD_25GIG	OSA card in OSD mode	25 Gigabit Ethernet
OSD_10GIG		10 Gigabit Ethernet
OSD_1000		Gigabit Ethernet, 1000BASE-T
OSD_GbE_LANE		Gigabit Ethernet, LAN Emulation
OSD_FE_LANE		Fast Ethernet, LAN Emulation
OSD_Express		Unknown
OSX	OSA-Express for zBX	10 Gigabit Ethernet
HiperSockets™	HiperSockets, CHPID type IQD	N/A
Virtual NIC QDIO	VSWITCH or guest LAN based on OSA	N/A
Virtual NIC Hiper	Guest LAN based on HiperSockets	N/A
Unknown	Other

Example

To find the card_type of a device 0.0.a100 issue:

# lszdev -a qeth 0.0.a100 --info --info
...
 READONLY    ACTIVE
 card_type   "OSD_1000"
....

or, using sysfs:

# cat /sys/bus/ccwgroup/drivers/qeth/0.0.a100/card_type
OSD_1000