reading kernel tunables from userland ?

[pluknet]

Hello,

2008/4/23 Luigi Rizzo <rizzo at iet.unipi.it>:
> sorry for the possibly naive question, but is there
>  a way other than sysctl to read the value of kernel 'tunable'
>  variables ?
>
>  E.g. in if_nfe.c i see
>
>  TUNABLE_INT("hw.nfe.msi_disable", &msi_disable);
>  TUNABLE_INT("hw.nfe.msix_disable", &msix_disable);
>  TUNABLE_INT("hw.nfe.jumbo_disable", &jumbo_disable);
>
>  but sysctl is reporting none of them.
>
>  I seem to remember that there was a separate command to access
>  kernel tunables,
>  but cannot remember which one, and neither 'man -k tunable'
>  nor a google search return any useful answer...

Perhaps are you about kenv ?

wbr,
pluknet