Support for the Linux WWAN subsystem

Ramon Fontes ramonreisfontes at gmail.com
Mon Aug 30 12:18:47 UTC 2021


Hello Aleksander,

Thank you for your reply. :)

> Those "wwan0" and "wwan1" are the "full devices", they're not the NET
> ports, as far as I know (may be mistaken though). Do you see any NET
> port listed in "ip link"?

Yes, please see them just below:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel
state DOWN mode DEFAULT group default qlen 1000
    link/ether e4:54:e8:02:37:1e brd ff:ff:ff:ff:ff:ff
3: wlo1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue
state UP mode DORMANT group default qlen 1000
    link/ether 64:32:a8:a0:39:53 brd ff:ff:ff:ff:ff:ff
    altname wlp0s20f3
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
state DOWN mode DEFAULT group default
    link/ether 02:42:b0:b0:d6:f9 brd ff:ff:ff:ff:ff:ff
15: wwan0: <POINTOPOINT,NOARP> mtu 1500 qdisc noop state DOWN mode
DEFAULT group default qlen 1000
    link/none
16: wwan1: <POINTOPOINT,NOARP> mtu 1500 qdisc noop state DOWN mode
DEFAULT group default qlen 1000
    link/none


> Does the hwsim driver somehow register a net
> port associated to those exposed control ports?

That's a good question. I don't know the answer! Do you have any
suggestions for me to check?

Thanks!
Ramon Fontes


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