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lakinduakash / linux-wifi-hotspot

Feature-rich wifi hotspot creator for Linux which provides both GUI and command-line interface. It is also able to create a hotspot using the same wifi card which is connected to an AP already ( Similar to Windows 10).
BSD 2-Clause "Simplified" License
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Cannot create hotspot when wifi connected on iwlwifi after Linux kernel 6.11 #435

Open CicadaSeventeen opened 3 weeks ago

CicadaSeventeen commented 3 weeks ago

Describe the bug Unable to create hotspot when connected to any WIFI, when running with Linux kernel version >= 6.11.0 Also, unable to connect to WIFI when hotspot on, when running with Linux kernel version >= 6.11.0 There is no such problem on Linux kernel 6.10

To Reproduce Steps to reproduce the behavior:

  1. Connect to any WIFI on a OS with kernel version >= 6.11.0
  2. Run linux-wifi-hotspot
  3. Click on 'Create hotspot'
  4. Fail to create hotspot and show Not running

Expected behavior Hotspot enabled, which is that case when kernel version <= 6.10

Screenshots 图片

Desktop (please complete the following information):

Additional context I have done bisect off kernel to find out some hints.

Between 6.10 and 6.11, such commit breaks all WIFI:

commit 5c38bedac16a946402b627621b3d4bfcc9952479
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Tue Jun 18 20:03:02 2024 +0300

    wifi: iwlwifi: mvm: unify and fix interface combinations

    AP interfaces fundamentally cannot leave the channel, so multi-
    channel operation with them isn't really possible. We shouldn't
    advertise support for such, at least not as long as we don't
    have full multi-radio support. Thus, remove the AP bit from the
    interface combinations for two channels and add another set for
    just one channel that has it.

    Also, to avoid duplicating everything even more, unify the NAN
    and non-NAN cases.

And such commit fixs WIFI. However, after that, hotspot is not fixed.

commit 4278d88fedcfde1b91a5cfa96acb0e06d7742e12 (HEAD)
Author: Johannes Berg <johannes.berg@intel.com>
Date:   Tue Jul 2 13:00:00 2024 +0200

    wifi: iwlwifi: mvm: fix interface combinations

    The NAN code referenced in this commit isn't actually
    present in the driver (any more), and the commit didn't
    add the extra NAN entry. Thus, the -1 is incorrect.
CicadaSeventeen commented 3 weeks ago

It seems that Intel bans multi-channel off iwlwifi so that hotspot broken.