https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263783

Andre Albsmeier <[email protected]> changed:

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--- Comment #67 from Andre Albsmeier <[email protected]> ---
I know this PR is closed but I don't know where to go... :-)

I have copied the relevant bits from -CURRENT to 14-STABLE. The good news
is that it works using a Sierra EM7455 in MBIM mode. But one must have

device netmap

in the kernel. Without it you don't get packets back when pinging 8.8.8.8.
With UMB_DEBUG enabled, we find:

Aug 4 12:27:14 kernel: init: reached state UP
Aug 4 12:27:14 kernel: umb_rxeof(0): state=0
Aug 4 12:27:14 kernel: umb0: link state changed to UP
Aug 4 12:27:15 kernel: umb_txeof(0) state=0
Aug 4 12:27:15 kernel: umb_txeof(0) state=1
Aug 4 12:27:15 kernel: umb_rxeof(0): state=1
Aug 4 12:27:15 kernel: received 112 bytes in 1 frames
Aug 4 12:27:16 kernel: umb_txeof(0) state=0
Aug 4 12:27:16 kernel: umb_txeof(0) state=1
Aug 4 12:27:16 kernel: umb_rxeof(0): state=1
Aug 4 12:27:16 kernel: received 112 bytes in 1 frames

I can't test what happens in -CURRENT w/o netmap...

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