Re: Request DLT_/LINKTYPE_ value for vSockets

[Guy Harris <guy () alum mit edu>]

On Jul 15, 2016, at 12:18 PM, Gerard <ggarcia () abra uab cat> wrote:

> There are control packets which don't have payload,

So presumably AF_VSOCK_OP_CONTROL packets are control packets that have no payload; are AF_VSOCK_OP_CONNECT and 
AF_VSOCK_OP_DISCONNECT also packets with no payload?  (Presumably no packets should have the type AF_VSOCK_OP_UNKNOWN.)

> and data packets which have the application data after the header.

So those are presumably AF_VSOCK_OP_PAYLOAD packets?

If so, what, if anything, indicates what the contents of the payload are?

And:

What does the "t" field's value indicate?

Where is "struct virtio_vsock_hdr" defined?  Is that the "Virtio transport header" for AF_VSOCK_T_VIRTIO?

Is the idea that the value of the "t" field indicates what header follows the "len" field, with a value of 
AF_VSOCK_T_NO_INFO meaning "no header" and a value of AF_VSOCK_T_VIRTIO meaning "a struct virtio_vsock_hdr"?

If there is no header, is "len" 0 - i.e., is "len" really the length of the transport header following the "len" field?

What are the cid (connection ID?) and port values?
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