tech-net archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: BPF_MISC+BPF_COP and BPF_COPX



On Aug 8, 2013, at 1:14 AM, Darren Reed <darrenr%netbsd.org@localhost> wrote:

> A BPF program generated on Linux is just as valid as on Solaris or NetBSD.

Not necessarily - negative offsets in load and store instructions are supported 
on Linux to access some metadata that's not in the packet data, but those 
aren't, as far as I know, supported on other platforms.

However, there is a subset of BPF that all kernel BPF implementations, and the 
userland implementation in libpcap, support.


Home | Main Index | Thread Index | Old Index