[Winpcap-bugs] bpf_validate() needs to do more checks
loris.degioanni at gmail.com
Sat Dec 3 00:40:52 GMT 2005
Guy Harris wrote:
> On Dec 2, 2005, at 3:51 PM, Loris Degioanni wrote:
>> Guy Harris wrote:
>>> BTW, what do those new instructions do? At some point I might want
>>> to see whether it's OK to pick up some additional instructions from
>>> the BSD/OS BPF interpreter - it has some instructions to scan IPv6
>>> headers to find the last header in the header chain, which would
>>> let us do a better job of handling the IPv6 "protochain" operator
>> Do they have support for this operator in the compiler too?
> They might, but all I've seen is their bpf_filter() implementation. It
> shouldn't be that hard to add support for it in the compiler.
Yeah, and it would be quite a useful feature...
> I think they also cleaned up some other things, e.g. adding an indexed
> version of some instructions.
Is there a reason why these guys don't submit their changes to
tcpdump.org too? And they don't tell us when they incorporate and
improve code written by us, like the JIT compiler? A better
communication could probably help both the communities...
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