native vde support

Index: Makefile.target
===================================================================
@@ -652,7 +652,7 @@
 endif
 
 $(QEMU_PROG): $(OBJS) ../libqemu_common.a libqemu.a
-	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS) $(SDL_LIBS) $(COCOA_LIBS) $(CURSES_LIBS) $(BRLAPI_LIBS)
+	$(CC) $(LDFLAGS) -o $@ $^ $(LIBS) $(SDL_LIBS) $(COCOA_LIBS) $(CURSES_LIBS) $(BRLAPI_LIBS) $(VDE_LIBS)
 
 endif # !CONFIG_USER_ONLY
 

Index: Makefile
===================================================================
@@ -127,6 +127,10 @@
 OBJS+=$(addprefix slirp/, $(SLIRP_OBJS))
 endif
 
+ifdef CONFIG_VDE
+LIBS+=-lvdeplug
+endif
+
 cocoa.o: cocoa.m
 	$(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<
 

Index: qemu-doc.texi
===================================================================
@@ -672,6 +672,21 @@
 /path/to/linux ubd0=/path/to/root_fs eth0=mcast
 @end example
 
+@item -net vde[,vlan=@var{n}][,sock=@var{socketpath}][,port=@var{n}][,group=@var{groupname}][,mode=@var{octalmode}]
+Connect VLAN @var{n} to PORT @var{n} of a vde switch running on host and
+listening for incoming connections on @var{socketpath}. Use GROUP @var{groupname}
+and MODE @var{octalmode} to change default ownership and permissions for
+communication port. This option is available only if QEMU has been compiled
+with vde support enabled.
+
+Example:
+@example
+# launch vde switch
+vde_switch -F -sock /tmp/myswitch
+# launch QEMU instance
+qemu linux.img -net nic -net vde,sock=/tmp/myswitch
+@end example
+
 @item -net none
 Indicate that no network devices should be configured. It is used to
 override the default configuration (@option{-net nic -net user}) which

Index: configure
===================================================================
@@ -89,6 +89,7 @@
 EXESUF=""
 gdbstub="yes"
 slirp="yes"
+vde="no"
 fmod_lib=""
 fmod_inc=""
 vnc_tls="yes"

@@ -280,6 +281,8 @@
   ;;
   --disable-slirp) slirp="no"
   ;;
+  --enable-vde) vde="yes"
+  ;;
   --disable-kqemu) kqemu="no"
   ;;
   --disable-brlapi) brlapi="no"

@@ -432,6 +435,7 @@
 echo "  --fmod-inc               path to FMOD includes"
 echo "  --enable-uname-release=R Return R for uname -r in usermode emulation"
 echo "  --sparc_cpu=V            Build qemu for Sparc architecture v7, v8, v8plus, v8plusa, v9"
+echo "  --enable-vde             enable support for vde network [$vde]"
 echo ""
 echo "NOTE: The object files are built at the place where configure is launched"
 exit 1

@@ -722,6 +726,19 @@
 fi
 
 ##########################################
+# vde libraries probe
+if test "$vde" = "yes" ; then
+  vde=no
+  cat > $TMPC << EOF
+#include <libvdeplug.h>
+int main(void) { struct vde_open_args a = {0, 0, 0} ; return 0;}
+EOF
+  if $cc $ARCH_CFLAGS -o $TMPE $TMPC 2> /dev/null ; then
+    vde=yes
+  fi
+fi
+
+##########################################
 # Sound support libraries probe
 
 audio_drv_probe()

@@ -868,6 +885,7 @@
 [ ! -z "$uname_release" ] && \
 echo "uname -r          $uname_release"
 echo "NPTL support      $nptl"
+echo "vde support       $vde"
 
 if test $sdl_too_old = "yes"; then
 echo "-> Your SDL version is too old - please upgrade to have SDL support"

@@ -1032,6 +1050,11 @@
   echo "CONFIG_SLIRP=yes" >> $config_mak
   echo "#define CONFIG_SLIRP 1" >> $config_h
 fi
+if test "$vde" = "yes" ; then
+  echo "CONFIG_VDE=yes" >> $config_mak
+  echo "#define CONFIG_VDE 1" >> $config_h
+  echo "VDE_LIBS=-lvdeplug" >> $config_mak
+fi
 for card in $audio_card_list; do
     def=CONFIG_`echo $card | tr '[:lower:]' '[:upper:]'`
     echo "$def=yes" >> $config_mak