Re: [libvirt] [PATCH 1/2] util: Functions to update host network device's multicast filter
On 10/08/2014 01:41 PM, Tony Krowiak wrote:
> Otherwise it looks okay. As we've discussed, it would be nice
to use
> netlink instead of /proc/net and ioctl(), but that can be added later.
I agree. When I originally started working on this, that was my plan,
however; after spending days trying to understand how to use netlink
to do retrieve the multicast list, I gave up when I found that
iproute2 does it by reading the file. Can you point me to some good,
detailed netlink documentation? I've googled for it, looked at code
examples and experimented by writing code snippets and have not been
able to figure out how to retrieve the multicast list using netlink.
No :-( That is a *big* problem with netlink, and I went through the same
journey as you (although probably spent less time, as you sent your
first message when I'd only been looking at it for a day or so).
I *think* there is a libnl cache that can be used to retrieve the
multicast list (look for the libnl-devel mailing list archives for a
message I sent there several days ago, along with a couple of
responses), but it's definitely not as straightforward as reading a file
in /proc.