On 9/16/13 1:23 PM, Julian Elischer wrote:
On 9/15/13 12:21 AM, Warner Losh wrote:
On Sep 14, 2013, at 2:44 AM, Anuranjan Shukla wrote:
At Juniper Networks, interface name size was needed to be longer
than what FreeBSD has. We're trying to reduce our local changes to
FreeBSD to allow us an easier time upgrading to newer FreeBSD
releases, and support the modularization of the network stack we'd
proposed earlier. I'm sending this out to propose changing
IFNAMSIZ from 16 to 60 (this is the size we use) in FreeBSD. We
don't see any downside (other than increasing the ifreq structure
size for one) to doing this, as allowing longer interface names
can be handy for vendors. I'd like to hear if there's a strong
objection to this. If not, we'd like to get this into to the
FreeBSD codebase. Any thoughts/objections highly appreciated.
Divert already has a problem with 16, since it tries (or fails if >
8 ) to pack the interface name into the 'unused'
bytes of a sockaddr.
60 just makes things worse, but since it already fails at 16 I can't
really object.
but it would be nice if we could think of a better mechanism for
divert reinjection.
having said that I guess divert could just define a different
sockaddr_divert
to use instead, sinc eit is a different family.
56 or 64 would be better for alignment, wouldn't it?
Warner
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