Date: Fri, 11 Jan 2008 20:10:34 -0800 From: "Subhash Gopinath" <subhashg.unix@gmail.com> To: freebsd-hackers@freebsd.org Subject: netgraph question Message-ID: <5db9d2e0801112010s55812b20p6a43f0fbb5cddd17@mail.gmail.com>
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Hello folks, I am looking at writing an application program to tap certain ipv6 packets (say icmpv6) using netgraph. The application has to do some processing, before kernel can proceed with those packets. I have vaguely understood netgraph, and I see that I need a ng_socket node in the application, an ng_bpf node, and an ng_ether or ng_iface node in the kernel. My question is. would I need to create such nodes for each interface. Then it becomes unscalable.. Can I have just one socket, bpf, iface node that can tap icmpv6 packets on all interfaces? I'll reiterate if this question was not clear. Any help would be greatly appreciated... Otherwise I'll have to end up using raw sockets.. Thanks, Subhash
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