[Bug 230465] ixl: not working in netmap mode

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230465

Vincenzo Maffione <vmaffione at FreeBSD.org> changed:

           What    |Removed                     |Added
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             Status|New                         |In Progress

--- Comment #10 from Vincenzo Maffione <vmaffione at FreeBSD.org> ---
(In reply to Ozkan KIRIK from comment #9)

Hi,
  Thanks a lot for testing and for the patience.
Yes, this patch was not meant to fix the issue, but just to clean up a little
bit.
It would help to know what is the value of `sysctl
hw.ixl.enable_head_writeback` in your setup, and what does `dmesg | grep
"netmap queues"` say.

Could you please point me at the URL where you got your "releng/11.2 kernel
(FreeBSD 11.2-RELEASE-p8 #0 r343486)" exactly ? You are saying that ixl in this
version works, but r343486 corresponds to HEAD, which you are saying it doesn't
work...
If ixl works on releng/11.2 than we can check what happened since then.

If you found that ixl/netmap doesn't work on 12.x, it means that the issue
there is in iflib, since ixl uses iflib, and iflib provides netmap support for
all the drivers.
We probably need to open another ticket for that, since it is a completely
different piece of code.

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