cvs commit: src/sys/net bpf.c

Sepherosa Ziehau sepherosa at
Sat Aug 16 20:52:57 PDT 2008

On Sun, Aug 17, 2008 at 11:44 AM, Sepherosa Ziehau
<sephe at> wrote:
> sephe       2008/08/16 20:44:48 PDT
> DragonFly src repository
>  Modified files:
>    sys/net              bpf.c
>  Log:
>  Various tap functions of bpf(4) are the only non-MPSAFE code on ethernet
>  input path (in polling or interrupt threads), so push mplock holding down
>  into bpf(4) tap functions.  Also re-check the bpf_if after holding mplock
>  to avoid use-after-check race.

I suggest to set kern.intr_mpsafe to 1 after this change.  I have used
it for at least one year, except the bpf issue, I didn't notice any
other trouble

Best Regards,

Live Free or Die

More information about the Commits mailing list