Move the generation of the list of ports to the server

Ref #676

docs/index.rst

@@ -30,4 +30,5 @@ GNS3 developements
 .. toctree::
     development
     file_format
+    port_name_format
 

docs/port_name_format.rst

@@ -0,0 +1,38 @@
+Port name formatting
+####################
+
+Some node like qemu allow you to personnalize the name of ports in order to match the name of the interfaces inside the emulator.
+
+Simple syntax
+==============
+The first {} will be replace by the interface number 
+
+For example: "eth{}" will give:
+* eth0
+* eth1
+* eth2
+
+Or more verbose "eth{port0}" and "eth{0}" will do the same.
+
+Use segments
+============
+
+Segment allow you to split your interface in multiple ports 
+
+For example "Ethernet{segment0}/{port0}" with a segment size of 3:
+* Ethernet0/0
+* Ethernet0/1
+* Ethernet0/2
+* Ethernet1/0
+* Ethernet1/1
+
+You can also change the start number.
+
+For example "Ethernet{segment1}/{port1}" with a segment size of 3:
+* Ethernet1/1
+* Ethernet1/2
+* Ethernet1/3
+* Ethernet2/1
+* Ethernet2/2
+
+This work from port0 to port9 if you need a bigger range ask us.