doc: clarify port hotplug in testpmd

Port needs to be stopped and then closed before it can be detached,
but the documentation was only saying to close the port.

Also, both sections for port detaching and attaching has been reformatted
slightly, to show clearly how to use the commands.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: John McNamara <john.mcnamara@intel.com>

diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index 1545350..5d2f356 100644 (file)
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -980,7 +980,9 @@ The following sections show functions for configuring ports.
 port attach
 ~~~~~~~~~~~
 
-Attach a port specified by pci address or virtual device args.
+Attach a port specified by pci address or virtual device args::
+
+   testpmd> port attach (identifier)
 
 To attach a new pci device, the device should be recognized by kernel first.
 Then it should be moved under DPDK management.
@@ -1014,8 +1016,6 @@ For example, to move a pci device using ixgbe under DPDK management:
 
 To attach a port created by virtual device, above steps are not needed.
 
-port attach (identifier)
-
 For example, to attach a port whose pci address is 0000:0a:00.0.
 
 .. code-block:: console
@@ -1061,16 +1061,19 @@ the mode and slave parameters must be given.
 port detach
 ~~~~~~~~~~~
 
-Detach a specific port.
-
-Before detaching a port, the port should be closed::
+Detach a specific port::
 
    testpmd> port detach (port_id)
 
+Before detaching a port, the port should be stopped and closed.
+
 For example, to detach a pci device port 0.
 
 .. code-block:: console
 
+   testpmd> port stop 0
+   Stopping ports...
+   Done
    testpmd> port close 0
    Closing ports...
    Done
@@ -1088,6 +1091,9 @@ For example, to detach a virtual device port 0.
 
 .. code-block:: console
 
+   testpmd> port stop 0
+   Stopping ports...
+   Done
    testpmd> port close 0
    Closing ports...
    Done