Re: GNU Mach interface to packet filters

[Marco Gerards]

Richard Braun <syn@hurdfr.org> writes:

> NETF filters are considered to be native filters, so there is no macro
> for them (a requirement for all non-native filters is to be non-zero).
>
> Macros were also added in include/device/bpf.h :
> #define BPF_BEGIN     NETF_BPF
> #define BPF_IN                NETF_IN
> #define BPF_OUT               NETF_OUT
>
> Here is the NETF filter that would be used in pfinet :
> static short ether_filter[] =
> {
>   NETF_IN, /* header */
>   NETF_PUSHLIT | NETF_NOP,
>   1
> };

Is it possible to move NETF_IN to the end of the struct?  Would that
mean the interface change would not break existing code?

--
Marco