Messages in this thread | | | Date | Sat, 17 Oct 1998 21:48:45 -0400 (EDT) | From | Garth R Goodson <> | Subject | Re: LSF and SOCK_PACKET |
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Excerpts from mail: 17-Oct-98 Re: LSF and SOCK_PACKET by alan@lxorguk.ukuu.org.uk > > Has anyone given any thought to having a BIND_TO_TCP_PORT type option > > for SOCK_PACKET? > > Why ?
If one is trying to implement user level networking (TCP/IP stack in user space) on top of packet sockets then there is a need to ensure that a TCP port assigned (by the user level library) does not conflict and will not be used by another application using the kernel's TCP stack.
> > > > > traffic monitoring (ie. user level networking) this would be a very > > useful feature (although it could be argued it breaks all kind of layer > > abstractions). > > > > I would be interested in hearing the best ways of going about this. > > Use the attach/detach filter stuff and write yourself a BPF filter that > checks the port
BPF is useful for the demultiplexing but will not help "reserve" a TCP port.
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