Netgraph, meta and socket PF_NG

[Julian Elischer]

you are correct

My plan was to use the metadata part of recvmesg()
to transfer metadata but never implemented it and it has not been
needed.
I suggest that you write a very simple node (start with ng_sample.c)
that converts metadata to a 'header' prepends it to the data
and then pass that up.

Alternatively you could look at implementing the recvmesg()
metadata transfer.



On Thu, 24 Jul 2003, Vincent Jardin wrote:

> With the regular data, I would like to send an opaque data from a netgraph 
> node to a userland program that has a NG_DATA/PF_NETGRAPH socket. This opaque 
> data is the meta.
> How can it be performed ?
> 
> Then, from the userland program, how to send data with an opaque to a 
> NG_DATA/PF_NG socket ? Then this opaque would be a netgraph's meta.
> 
> It seems that ng_socket does not support this feature, however I am not sure 
> that I understand properly its source code. ;-(
> 
> Thanks,
>   Vincent
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