configure: Fix typo in variable name.

[sliver-openvswitch.git] / PORTING

diff --git a/PORTING b/PORTING
index b83bf64..34c71f4 100644 (file)
--- a/PORTING
+++ b/PORTING
@@ -192,19 +192,19 @@ into the Open vSwitch architecture:
                |   |    ovs-vswitchd   |<-->ovsdb-server
                |   +-------------------+
                |   |      ofproto      |<-->OpenFlow controllers
-               |   +--------+-+--------+
-               |   | netdev | |ofproto-|
-     userspace |   +--------+ |  dpif  |
-               |   | netdev | +--------+
-               |   |provider| |  dpif  |
-               |   +---||---+ +--------+
-               |       ||     |  dpif  |
-               |       ||     |provider|
-               |_      ||     +---||---+
-                       ||         ||
-                _  +---||-----+---||---+
-               |   |          |datapath|
-        kernel |   |          +--------+
+               |   +--------+-+--------+  _
+               |   | netdev | |ofproto-|   |
+     userspace |   +--------+ |  dpif  |   |
+               |   | netdev | +--------+   |
+               |   |provider| |  dpif  |   |
+               |   +---||---+ +--------+   |
+               |       ||     |  dpif  |   | implementation of
+               |       ||     |provider|   | ofproto provider
+               |_      ||     +---||---+   |
+                       ||         ||       |
+                _  +---||-----+---||---+   |
+               |   |          |datapath|   |
+        kernel |   |          +--------+  _|
                |   |                   |
                |_  +--------||---------+
                             ||
@@ -235,10 +235,16 @@ useful examples during a port:
 Miscellaneous Notes
 -------------------
 
+Open vSwitch source code uses uint16_t, uint32_t, and uint64_t as
+fixed-width types in host byte order, and ovs_be16, ovs_be32, and
+ovs_be64 as fixed-width types in network byte order.  Each of the
+latter is equivalent to the one of the former, but the difference in
+name makes the intended use obvious.
+
 ovs-vswitchd is the most sophisticated of ofproto's clients, but
-ofproto can have other clients as well.  ovs-openflowd, in the
-utilities directory, is much simpler than ovs-vswitchd.  It may be
-easier to initially bring up ovs-openflowd as part of a port.
+ofproto can have other clients as well.  test-openflowd, in the
+tests directory, is much simpler than ovs-vswitchd.  It may be
+easier to initially bring up test-openflowd as part of a port.
 
 lib/entropy.c assumes that it can obtain high-quality random number
 seeds at startup by reading from /dev/urandom.  You will need to