[PATCH v2 02/11] transport-fabrics: introduce Virtio Qualified Name

[zhenwei pi <pizhenwei@bytedance.com>]

Add VQN section. The VQN is a little different from iSCSI/NVMe-oF on
style limitation. Because iSCSI/NVMe-of is storage specific protocol,
the full string IQN(for iSCSI/iSER) and NQN(for NVMe-oF) represents
a "storage access address". However, Virtio Over Fabrics works as
transport layer rather than device layer, a URL style string is better
to Virtio Over Fabrics. For example:
virtio-of://blk-resource/nvme-pool/849a39ad-8d7b-4a7a-adb6-e7407ace532c
virtio-of://blk-resource/hdd-pool/238151a7-acd7-4621-bbdf-382ddbccb6a1
...
virtio-of://crypto-resource/25307f22-e5a8-4ea2-b7ca-79f5c3bebc3c

A hunam readable VQN is helpful to maintain/debug/distinguish.

Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
---
 transport-fabrics.tex | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/transport-fabrics.tex b/transport-fabrics.tex
index 0dc031b..26b0192 100644
--- a/transport-fabrics.tex
+++ b/transport-fabrics.tex
@@ -29,3 +29,19 @@ \section{Virtio Over Fabrics}\label{sec:Virtio Transport Options / Virtio Over F
 initiator to generate a host interrupt. It is the responsibility of the host
 fabric interface to generate host interrupts.
 \end{itemize}
+
+\subsection{Virtio Qualified Name}\label{sec:Virtio Transport Options / Virtio Over Fabrics / Virtio Qualified Name}
+Virtio Qualified Names (VQNs) are used to uniquely describe an initiator or a
+target for the purposes of identification.
+
+A VQN is encoded as a string of Unicode characters with the following
+properties:
+
+\begin{itemize}
+\item The encoding is UTF-8 (refer to RFC 3629).
+\item The characters dash('-'), dot ('.'), slash('/') and colon(':') are used
+in formatting.
+\item The maximum name is 256 bytes in length.
+\item The string is null terminated.
+\item There is no strict style limitation.
+\end{itemize}
-- 
2.25.1