Re: [LIBNFNETLINK] Introduce nfnl_listen_for_msecs

[Patrick McHardy <kaber@trash.net>]

Pablo Neira Ayuso wrote:
> Patrick McHardy wrote:
> 
>>I got that :) What I actually wanted to know is what kind of program
>>would need this, and if its not likely that most programs need their
>>own select-loop for dealing with other fds anyway. Or in other words,
>>I'm not convinced this feature belongs inside libnfnetlink.
> 
> 
> But if I want to poll events, I'll have to work with the netfilter
> netlink socket from, say libnetfilter_conntrack or a normal program. So
> it will have to know about the netlink details.

Not the details, just the fd.

> AFAICS that would be a layer violation since libnfnetlink contains all
> the low level communication system with the netlink socket.

>From a poll/select perspective, the fd itself has nothing to do with
nfnetlink, its just a fd. I don't think this belongs inside
libnfnetlink, it has no direct relationship to nfnetlink. Even
nfnl_listen is questionable, the only reason it exists is probably
that it got copied from iproute's libnetlink.