qemu-options: update to show preferred boolean syntax for -chardev

The preferred syntax is to use "foo=on|off", rather than a bare
"foo" or "nofoo".

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20210216191027.595031-3-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-options.hx

@@ -3032,13 +3032,13 @@ DEFHEADING(Character device options:)
 DEF("chardev", HAS_ARG, QEMU_OPTION_chardev,
     "-chardev help\n"
     "-chardev null,id=id[,mux=on|off][,logfile=PATH][,logappend=on|off]\n"
-    "-chardev socket,id=id[,host=host],port=port[,to=to][,ipv4][,ipv6][,nodelay][,reconnect=seconds]\n"
+    "-chardev socket,id=id[,host=host],port=port[,to=to][,ipv4=on|off][,ipv6=on|off][,delay=on|off][,reconnect=seconds]\n"
-    "         [,server][,nowait][,telnet][,websocket][,reconnect=seconds][,mux=on|off]\n"
+    "         [,server=on|off][,wait=on|off][,telnet=on|off][,websocket=on|off][,reconnect=seconds][,mux=on|off]\n"
     "         [,logfile=PATH][,logappend=on|off][,tls-creds=ID][,tls-authz=ID] (tcp)\n"
-    "-chardev socket,id=id,path=path[,server][,nowait][,telnet][,websocket][,reconnect=seconds]\n"
+    "-chardev socket,id=id,path=path[,server=on|off][,wait=on|off][,telnet=on|off][,websocket=on|off][,reconnect=seconds]\n"
     "         [,mux=on|off][,logfile=PATH][,logappend=on|off][,abstract=on|off][,tight=on|off] (unix)\n"
     "-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr]\n"
-    "         [,localport=localport][,ipv4][,ipv6][,mux=on|off]\n"
+    "         [,localport=localport][,ipv4=on|off][,ipv6=on|off][,mux=on|off]\n"
     "         [,logfile=PATH][,logappend=on|off]\n"
     "-chardev msmouse,id=id[,mux=on|off][,logfile=PATH][,logappend=on|off]\n"
     "-chardev vc,id=id[[,width=width][,height=height]][[,cols=cols][,rows=rows]]\n"
@@ -3148,21 +3148,21 @@ The available backends are:
     A void device. This device will not emit any data, and will drop any
     data it receives. The null backend does not take any options.
 
-``-chardev socket,id=id[,TCP options or unix options][,server][,nowait][,telnet][,websocket][,reconnect=seconds][,tls-creds=id][,tls-authz=id]``
+``-chardev socket,id=id[,TCP options or unix options][,server=on|off][,wait=on|off][,telnet=on|off][,websocket=on|off][,reconnect=seconds][,tls-creds=id][,tls-authz=id]``
     Create a two-way stream socket, which can be either a TCP or a unix
     socket. A unix socket will be created if ``path`` is specified.
     Behaviour is undefined if TCP options are specified for a unix
     socket.
 
-    ``server`` specifies that the socket shall be a listening socket.
+    ``server=on|off`` specifies that the socket shall be a listening socket.
 
-    ``nowait`` specifies that QEMU should not block waiting for a client
+    ``wait=on|off`` specifies that QEMU should not block waiting for a client
     to connect to a listening socket.
 
-    ``telnet`` specifies that traffic on the socket should interpret
+    ``telnet=on|off`` specifies that traffic on the socket should interpret
     telnet escape sequences.
 
-    ``websocket`` specifies that the socket uses WebSocket protocol for
+    ``websocket=on|off`` specifies that the socket uses WebSocket protocol for
     communication.
 
     ``reconnect`` sets the timeout for reconnecting on non-server
@@ -3183,7 +3183,7 @@ The available backends are:
 
     TCP and unix socket options are given below:
 
-    ``TCP options: port=port[,host=host][,to=to][,ipv4][,ipv6][,nodelay]``
+    ``TCP options: port=port[,host=host][,to=to][,ipv4=on|off][,ipv6=on|off][,delay=on|off]``
         ``host`` for a listening socket specifies the local address to
         be bound. For a connecting socket species the remote host to
         connect to. ``host`` is optional for listening sockets. If not
@@ -3199,21 +3199,21 @@ The available backends are:
         bind to subsequent ports up to and including ``to`` until it
         succeeds. ``to`` must be specified as a port number.
 
-        ``ipv4`` and ``ipv6`` specify that either IPv4 or IPv6 must be
+        ``ipv4=on|off`` and ``ipv6=on|off`` specify that either IPv4
-        used. If neither is specified the socket may use either
+        or IPv6 must be used. If neither is specified the socket may
-        protocol.
+        use either protocol.
 
-        ``nodelay`` disables the Nagle algorithm.
+        ``delay=on|off`` disables the Nagle algorithm.
 
     ``unix options: path=path[,abstract=on|off][,tight=on|off]``
         ``path`` specifies the local path of the unix socket. ``path``
         is required.
-        ``abstract`` specifies the use of the abstract socket namespace,
+        ``abstract=on|off`` specifies the use of the abstract socket namespace,
         rather than the filesystem.  Optional, defaults to false.
-        ``tight`` sets the socket length of abstract sockets to their minimum,
+        ``tight=on|off`` sets the socket length of abstract sockets to their minimum,
         rather than the full sun_path length.  Optional, defaults to true.
 
-``-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr][,localport=localport][,ipv4][,ipv6]``
+``-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr][,localport=localport][,ipv4=on|off][,ipv6=on|off]``
     Sends all traffic from the guest to a remote host over UDP.
 
     ``host`` specifies the remote host to connect to. If not specified
@@ -3228,7 +3228,7 @@ The available backends are:
     ``localport`` specifies the local port to bind to. If not specified
     any available local port will be used.
 
-    ``ipv4`` and ``ipv6`` specify that either IPv4 or IPv6 must be used.
+    ``ipv4=on|off`` and ``ipv6=on|off`` specify that either IPv4 or IPv6 must be used.
     If neither is specified the device may use either protocol.
 
 ``-chardev msmouse,id=id``
@@ -3592,30 +3592,30 @@ SRST
         ``telnet options:``
             localhost 5555
 
-    ``tcp:[host]:port[,server][,nowait][,nodelay][,reconnect=seconds]``
+    ``tcp:[host]:port[,server=on|off][,wait=on|off][,delay=on|off][,reconnect=seconds]``
         The TCP Net Console has two modes of operation. It can send the
         serial I/O to a location or wait for a connection from a
         location. By default the TCP Net Console is sent to host at the
-        port. If you use the server option QEMU will wait for a client
+        port. If you use the ``server=on`` option QEMU will wait for a client
         socket application to connect to the port before continuing,
-        unless the ``nowait`` option was specified. The ``nodelay``
+        unless the ``wait=on|off`` option was specified. The ``delay=on|off``
-        option disables the Nagle buffering algorithm. The ``reconnect``
+        option disables the Nagle buffering algorithm. The ``reconnect=on``
-        option only applies if noserver is set, if the connection goes
+        option only applies if ``server=no`` is set, if the connection goes
         down it will attempt to reconnect at the given interval. If host
         is omitted, 0.0.0.0 is assumed. Only one TCP connection at a
-        time is accepted. You can use ``telnet`` to connect to the
+        time is accepted. You can use ``telnet=on`` to connect to the
         corresponding character device.
 
         ``Example to send tcp console to 192.168.0.2 port 4444``
             -serial tcp:192.168.0.2:4444
 
         ``Example to listen and wait on port 4444 for connection``
-            -serial tcp::4444,server
+            -serial tcp::4444,server=on
 
         ``Example to not wait and listen on ip 192.168.0.100 port 4444``
-            -serial tcp:192.168.0.100:4444,server,nowait
+            -serial tcp:192.168.0.100:4444,server=on,wait=off
 
-    ``telnet:host:port[,server][,nowait][,nodelay]``
+    ``telnet:host:port[,server=on|off][,wait=on|off][,delay=on|off]``
         The telnet protocol is used instead of raw tcp sockets. The
         options work the same as if you had specified ``-serial tcp``.
         The difference is that the port acts like a telnet server or
@@ -3625,11 +3625,11 @@ SRST
         you do it with Control-] and then type "send break" followed by
         pressing the enter key.
 
-    ``websocket:host:port,server[,nowait][,nodelay]``
+    ``websocket:host:port,server=on[,wait=on|off][,delay=on|off]``
         The WebSocket protocol is used instead of raw tcp socket. The
         port acts as a WebSocket server. Client mode is not supported.
 
-    ``unix:path[,server][,nowait][,reconnect=seconds]``
+    ``unix:path[,server=on|off][,wait=on|off][,reconnect=seconds]``
         A unix domain socket is used instead of a tcp socket. The option
         works the same as if you had specified ``-serial tcp`` except
         the unix domain socket path is used for connections.
@@ -3642,7 +3642,7 @@ SRST
         multiplex the monitor onto a telnet server listening on port
         4444 would be:
 
-        ``-serial mon:telnet::4444,server,nowait``
+        ``-serial mon:telnet::4444,server=on,wait=off``
 
         When the monitor is multiplexed to stdio in this way, Ctrl+C
         will not terminate QEMU any more but will be passed to the guest
@@ -4815,11 +4815,11 @@ SRST
             primary:
             -netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown
             -device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66
-            -chardev socket,id=mirror0,host=3.3.3.3,port=9003,server,nowait
+            -chardev socket,id=mirror0,host=3.3.3.3,port=9003,server=on,wait=off
-            -chardev socket,id=compare1,host=3.3.3.3,port=9004,server,nowait
+            -chardev socket,id=compare1,host=3.3.3.3,port=9004,server=on,wait=off
-            -chardev socket,id=compare0,host=3.3.3.3,port=9001,server,nowait
+            -chardev socket,id=compare0,host=3.3.3.3,port=9001,server=on,wait=off
             -chardev socket,id=compare0-0,host=3.3.3.3,port=9001
-            -chardev socket,id=compare_out,host=3.3.3.3,port=9005,server,nowait
+            -chardev socket,id=compare_out,host=3.3.3.3,port=9005,server=on,wait=off
             -chardev socket,id=compare_out0,host=3.3.3.3,port=9005
             -object iothread,id=iothread1
             -object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0
@@ -4841,13 +4841,13 @@ SRST
             primary:
             -netdev tap,id=hn0,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown
             -device e1000,id=e0,netdev=hn0,mac=52:a4:00:12:78:66
-            -chardev socket,id=mirror0,host=3.3.3.3,port=9003,server,nowait
+            -chardev socket,id=mirror0,host=3.3.3.3,port=9003,server=on,wait=off
-            -chardev socket,id=compare1,host=3.3.3.3,port=9004,server,nowait
+            -chardev socket,id=compare1,host=3.3.3.3,port=9004,server=on,wait=off
-            -chardev socket,id=compare0,host=3.3.3.3,port=9001,server,nowait
+            -chardev socket,id=compare0,host=3.3.3.3,port=9001,server=on,wait=off
             -chardev socket,id=compare0-0,host=3.3.3.3,port=9001
-            -chardev socket,id=compare_out,host=3.3.3.3,port=9005,server,nowait
+            -chardev socket,id=compare_out,host=3.3.3.3,port=9005,server=on,wait=off
             -chardev socket,id=compare_out0,host=3.3.3.3,port=9005
-            -chardev socket,id=notify_way,host=3.3.3.3,port=9009,server,nowait
+            -chardev socket,id=notify_way,host=3.3.3.3,port=9009,server=on,wait=off
             -object filter-mirror,id=m0,netdev=hn0,queue=tx,outdev=mirror0
             -object filter-redirector,netdev=hn0,id=redire0,queue=rx,indev=compare_out
             -object filter-redirector,netdev=hn0,id=redire1,queue=rx,outdev=compare0