Rework ipv6 options

Rename the recently-added ip6-foo options into ipv6-foo options, to make
them coherent with other ipv6 options.

Also rework the documentation.
Signed-off-by: NSamuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: NEric Blake <eblake@redhat.com>

net/slirp.c

@@ -828,10 +828,10 @@ int net_init_slirp(const NetClientOptions *opts, const char *name,
     net_init_slirp_configs(user->guestfwd, 0);
 
     ret = net_slirp_init(peer, "user", name, user->q_restrict, vnet,
-                         user->host, user->ip6_prefix, user->ip6_prefixlen,
-                         user->ip6_host, user->hostname, user->tftp,
+                         user->host, user->ipv6_prefix, user->ipv6_prefixlen,
+                         user->ipv6_host, user->hostname, user->tftp,
                          user->bootfile, user->dhcpstart,
-                         user->dns, user->ip6_dns, user->smb,
+                         user->dns, user->ipv6_dns, user->smb,
                          user->smbserver, dnssearch);
 
     while (slirp_configs) {

qapi-schema.json

@@ -2427,7 +2427,10 @@
 #
 # @ip: #optional legacy parameter, use net= instead
 #
-# @net: #optional IP address and optional netmask
+# @net: #optional IP network address that the guest will see, in the
+#       form addr[/netmask] The netmask is optional, and can be
+#       either in the form a.b.c.d or as a number of valid top-most
+#       bits. Default is 10.0.2.0/24.
 #
 # @host: #optional guest-visible address of the host
 #
@@ -2443,13 +2446,17 @@
 # @dnssearch: #optional list of DNS suffixes to search, passed as DHCP option
 #             to the guest
 #
-# @ip6-prefix: #optional IPv6 network prefix (default is fec0::) (since 2.6)
+# @ipv6-prefix: #optional IPv6 network prefix (default is fec0::) (since
+#               2.6). The network prefix is given in the usual
+#               hexadecimal IPv6 address notation.
 #
-# @ip6-prefixlen: #optional IPv6 network prefix length (default is 64) (since 2.6)
+# @ipv6-prefixlen: #optional IPv6 network prefix length (default is 64)
+#                  (since 2.6)
 #
-# @ip6-host: #optional guest-visible IPv6 address of the host (since 2.6)
+# @ipv6-host: #optional guest-visible IPv6 address of the host (since 2.6)
 #
-# @ip6-dns: #optional guest-visible IPv6 address of the virtual nameserver (since 2.6)
+# @ipv6-dns: #optional guest-visible IPv6 address of the virtual
+#            nameserver (since 2.6)
 #
 # @smb: #optional root directory of the built-in SMB server
 #
@@ -2474,10 +2481,10 @@
     '*dhcpstart': 'str',
     '*dns':       'str',
     '*dnssearch': ['String'],
-    '*ip6-prefix':      'str',
-    '*ip6-prefixlen':   'int',
-    '*ip6-host':        'str',
-    '*ip6-dns':         'str',
+    '*ipv6-prefix':      'str',
+    '*ipv6-prefixlen':   'int',
+    '*ipv6-host':        'str',
+    '*ipv6-dns':         'str',
     '*smb':       'str',
     '*smbserver': 'str',
     '*hostfwd':   ['String'],

qemu-options.hx

@@ -1560,9 +1560,9 @@ DEF("smb", HAS_ARG, QEMU_OPTION_smb, "", QEMU_ARCH_ALL)
 
 DEF("netdev", HAS_ARG, QEMU_OPTION_netdev,
 #ifdef CONFIG_SLIRP
-    "-netdev user,id=str[,net=addr[/mask]][,host=addr][,ip6-net=addr[/int]]\n"
-    "         [,ip6-host=addr][,restrict=on|off][,hostname=host][,dhcpstart=addr]\n"
-    "         [,dns=addr][,ip6-dns=addr][,dnssearch=domain][,tftp=dir]\n"
+    "-netdev user,id=str[,net=addr[/mask]][,host=addr][,ipv6-net=addr[/int]]\n"
+    "         [,ipv6-host=addr][,restrict=on|off][,hostname=host][,dhcpstart=addr]\n"
+    "         [,dns=addr][,ipv6-dns=addr][,dnssearch=domain][,tftp=dir]\n"
     "         [,bootfile=f][,hostfwd=rule][,guestfwd=rule]"
 #ifndef _WIN32
                                              "[,smb=dir[,smbserver=addr]]\n"
@@ -1719,11 +1719,13 @@ either in the form a.b.c.d or as number of valid top-most bits. Default is
 Specify the guest-visible address of the host. Default is the 2nd IP in the
 guest network, i.e. x.x.x.2.
 
-@item ip6-net=@var{addr}[/@var{int}]
-Set IPv6 network address the guest will see. Optionally specify the prefix
-size, as number of valid top-most bits. Default is fec0::/64.
+@item ipv6-net=@var{addr}[/@var{int}]
+Set IPv6 network address the guest will see (default is fec0::/64). The
+network prefix is given in the usual hexadecimal IPv6 address
+notation. The prefix size is optional, and is given as the number of
+valid top-most bits (default is 64).
 
-@item ip6-host=@var{addr}
+@item ipv6-host=@var{addr}
 Specify the guest-visible IPv6 address of the host. Default is the 2nd IPv6 in
 the guest network, i.e. xxxx::2.
 
@@ -1744,7 +1746,7 @@ Specify the guest-visible address of the virtual nameserver. The address must
 be different from the host address. Default is the 3rd IP in the guest network,
 i.e. x.x.x.3.
 
-@item ip6-dns=@var{addr}
+@item ipv6-dns=@var{addr}
 Specify the guest-visible address of the IPv6 virtual nameserver. The address
 must be different from the host address. Default is the 3rd IP in the guest
 network, i.e. xxxx::3.