runqemu: fixes for slirp, network device and hostfwd

Fixed:
- Add QB_NETWORK_DEVICE to set network device, it will be used by both
  slirp and tap.
- Set QB_NETWORK_DEVICE to "-device virtio-net-pci" in qemuboot.bbclass
  but runqemu will default to "-device e1000" when QB_NETWORK_DEVICE is
  not set, this is because oe-core's qemu targets support
  virtio-net-pci, but the one outside of oe-core may not,
  "-device e1000" is more common.
- Set hostfwd by default: 2222 -> 22, 2323 -> 23, and it will choose a
  usable port when the one like 222 is being used. This can avoid
  conflicts when multilib slirp qemus are running. We can forward more
  ports by default if needed, and bsp.conf can custom it.
- Use different mac sections for slirp and tap to fix conflicts when
  running both of them on the same host.

[YOCTO #7887]

CC: Nathan Rossi <nathan@nathanrossi.com>
CC: Randy Witt <randy.e.witt@linux.intel.com>
Signed-off-by: Robert Yang <liezhi.yang@windriver.com>

4 files changed, 11 insertions, 7 deletions

diff --git a/meta/classes/qemuboot.bbclass b/meta/classes/qemuboot.bbclass
index a181fa2213..be5d7a4c8f 100644
--- a/meta/classes/qemuboot.bbclass
+++ b/meta/classes/qemuboot.bbclass
@@ -18,11 +18,15 @@
 # QB_AUDIO_OPT: qemu audio option, e.g., "-soundhw ac97,es1370", used
 #               when QB_AUDIO_DRV is set.
 # QB_KERNEL_ROOT: kernel's root, e.g., /dev/vda
+# QB_NETWORK_DEVICE: network device, e.g., "-device virtio-net-pci,netdev=net0,mac=@MAC@",
+#                    it needs work with QB_TAP_OPT and QB_SLIRP_OPT.
+#                    Note, runqemu will replace @MAC@ with a predefined mac, you can set
+#                    a custom one, but that may cause conflicts when multiple qemus are
+#                    running on the same host.
 # QB_TAP_OPT: netowrk option for 'tap' mode, e.g.,
-#             "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no -device virtio-net-device,netdev=net0"
+#             "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
 #              Note, runqemu will replace "@TAP@" with the one which is used, such as tap0, tap1 ...
-# QB_SLIRP_OPT: network option for SLIRP mode, e.g.,
-#             "-netdev user,id=net0 -device virtio-net-device,netdev=net0"
+# QB_SLIRP_OPT: network option for SLIRP mode, e.g., -netdev user,id=net0"
 # QB_ROOTFS_OPT: used as rootfs, e.g.,
 #               "-drive id=disk0,file=@ROOTFS@,if=none,format=raw -device virtio-blk-device,drive=disk0"
 #              Note, runqemu will replace "@ROOTFS@" with the one which is used, such as core-image-minimal-qemuarm64.ext4.
@@ -40,6 +44,7 @@ QB_SERIAL_OPT ?= "-serial mon:stdio -serial null"
 QB_DEFAULT_KERNEL ?= "${KERNEL_IMAGETYPE}"
 QB_DEFAULT_FSTYPE ?= "ext4"
 QB_OPT_APPEND ?= "-show-cursor"
+QB_NETWORK_DEVICE ?= "-device virtio-net-pci,netdev=net0,mac=@MAC@"
 
 # Create qemuboot.conf
 addtask do_write_qemuboot_conf after do_rootfs before do_image
diff --git a/meta/conf/machine/include/qemuboot-x86.inc b/meta/conf/machine/include/qemuboot-x86.inc
index 08702948e4..06ac983d4d 100644
--- a/meta/conf/machine/include/qemuboot-x86.inc
+++ b/meta/conf/machine/include/qemuboot-x86.inc
@@ -13,4 +13,3 @@ QB_AUDIO_OPT = "-soundhw ac97,es1370"
 QB_KERNEL_CMDLINE_APPEND = "vga=0 uvesafb.mode_option=640x480-32 oprofile.timer=1 uvesafb.task_timeout=-1"
 # Add the 'virtio-rng-pci' device otherwise the guest may run out of entropy
 QB_OPT_APPEND = "-vga vmware -show-cursor -usb -usbdevice tablet -device virtio-rng-pci"
-QB_SLIRP_OPT = "-net nic,model=e1000 -net user,hostfwd=tcp::2222-:22"
diff --git a/meta/conf/machine/qemuarm64.conf b/meta/conf/machine/qemuarm64.conf
index e70538aac6..242889ac8a 100644
--- a/meta/conf/machine/qemuarm64.conf
+++ b/meta/conf/machine/qemuarm64.conf
@@ -17,8 +17,8 @@ QB_CPU = "-cpu cortex-a57"
 QB_KERNEL_CMDLINE_APPEND = "console=ttyAMA0,38400"
 # Add the 'virtio-rng-pci' device otherwise the guest may run out of entropy
 QB_OPT_APPEND = "-show-cursor -device virtio-rng-pci -monitor null"
-QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no -device virtio-net-device,netdev=net0,mac=@MAC@"
-QB_SLIRP_OPT = "-netdev user,id=net0 -device virtio-net-device,netdev=net0"
+QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"
+QB_NETWORK_DEVICE = "-device virtio-net-device,netdev=net0,mac=@MAC@"
 QB_ROOTFS_OPT = "-drive id=disk0,file=@ROOTFS@,if=none,format=raw -device virtio-blk-device,drive=disk0"
 QB_SERIAL_OPT = "-device virtio-serial-device -chardev null,id=virtcon -device virtconsole,chardev=virtcon"
 QB_TCPSERIAL_OPT = " -device virtio-serial-device -chardev socket,id=virtcon,port=@PORT@,host=127.0.0.1 -device virtconsole,chardev=virtcon"
diff --git a/meta/conf/machine/qemuppc.conf b/meta/conf/machine/qemuppc.conf
index 9d174bc439..a9ef64b0af 100644
--- a/meta/conf/machine/qemuppc.conf
+++ b/meta/conf/machine/qemuppc.conf
@@ -18,4 +18,4 @@ QB_CPU = "-cpu G4"
 QB_KERNEL_CMDLINE_APPEND = "console=tty console=ttyS0"
 # Add the 'virtio-rng-pci' device otherwise the guest may run out of entropy
 QB_OPT_APPEND = "-show-cursor -usb -usbdevice tablet -device virtio-rng-pci"
-QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no -device virtio-net-pci,netdev=net0,mac=@MAC@"
+QB_TAP_OPT = "-netdev tap,id=net0,ifname=@TAP@,script=no,downscript=no"