[Bug 208267] if_sfxge unstable causes panic at ifconfig sfxge0 up

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208267

--- Comment #3 from nonesuch at longcount.org ---
All
  Updating the loader to use

hw.sfxge.0.max_rss_channels=16
hw.sfxge.1.max_rss_channels=16


As well as disabling HT in the bios fixed the issue. 

I propose the following "fix"

1. Update the man page to denote 

     hw.sfxge.N.max_rss_channels
             The maximum number of allocated RSS channels for the Nth adapter.
             If set to 0 or unset, the number of channels is determined by the
             number of CPU cores. This does not scale beyond 32 cores. You need 
             to manually set the hw.sfxge.N.max_rss_channels <=32 before
loading 
             driver in a box with more then 32 cores.

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