# 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.
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
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"
Examples:
runqemu qemuarm
runqemu tmp/deploy/images/qemuarm
- runqemu tmp/deploy/images/qemux86/.qemuboot.conf
+ runqemu tmp/deploy/images/qemux86/<qemuboot.conf>
runqemu qemux86-64 core-image-sato ext4
runqemu qemux86-64 wic-image-minimal wic
runqemu path/to/bzImage-qemux86.bin path/to/nfsrootdir/ serial
return f
return ''
+def check_free_port(host, port):
+ """ Check whether the port is free or not """
+ import socket
+ from contextlib import closing
+
+ with closing(socket.socket(socket.AF_INET, socket.SOCK_STREAM)) as sock:
+ if sock.connect_ex((host, port)) == 0:
+ # Port is open, so not free
+ return False
+ else:
+ # Port is not open, so free
+ return True
+
class BaseConfig(object):
def __init__(self):
# Vars can be merged with .qemuboot.conf, use a dict to manage them.
self.snapshot = False
self.fstypes = ('ext2', 'ext3', 'ext4', 'jffs2', 'nfs', 'btrfs', 'cpio.gz', 'cpio', 'ramfs')
self.vmtypes = ('hddimg', 'hdddirect', 'wic', 'vmdk', 'qcow2', 'vdi', 'iso')
+ self.network_device = "-device e1000,netdev=net0,mac=@MAC@"
+ # Use different mac section for tap and slirp to avoid
+ # conflicts, e.g., when one is running with tap, the other is
+ # running with slirp.
+ # The last section is dynamic, which is for avoiding conflicts,
+ # when multiple qemus are running, e.g., when multiple tap or
+ # slirp qemus are running.
+ self.mac_tap = "52:54:00:12:34:"
+ self.mac_slirp = "52:54:00:12:35:"
def acquire_lock(self):
logger.info("Acquiring lockfile %s..." % self.lock)
self.nfs_running = True
-
def setup_slirp(self):
"""Setup user networking"""
if self.fstype == 'nfs':
self.setup_nfs()
self.kernel_cmdline_script += ' ip=dhcp'
- self.set('NETWORK_CMD', self.get('QB_SLIRP_OPT'))
+ # Port mapping
+ hostfwd = ",hostfwd=tcp::2222-:22,hostfwd=tcp::2323-:23"
+ qb_slirp_opt_default = "-netdev user,id=net0%s" % hostfwd
+ qb_slirp_opt = self.get('QB_SLIRP_OPT') or qb_slirp_opt_default
+ # Figure out the port
+ ports = re.findall('hostfwd=[^-]*:([0-9]+)-[^,-]*', qb_slirp_opt)
+ ports = [int(i) for i in ports]
+ mac = 2
+ # Find a free port to avoid conflicts
+ for p in ports[:]:
+ p_new = p
+ while not check_free_port('localhost', p_new):
+ p_new += 1
+ mac += 1
+ while p_new in ports:
+ p_new += 1
+ mac += 1
+ if p != p_new:
+ ports.append(p_new)
+ qb_slirp_opt = re.sub(':%s-' % p, ':%s-' % p_new, qb_slirp_opt)
+ logger.info("Port forward changed: %s -> %s" % (p, p_new))
+ mac = "%s%02x" % (self.mac_slirp, mac)
+ self.set('NETWORK_CMD', '%s %s' % (self.network_device.replace('@MAC@', mac), qb_slirp_opt))
+ # Print out port foward
+ hostfwd = re.findall('(hostfwd=[^,]*)', qb_slirp_opt)
+ if hostfwd:
+ logger.info('Port forward: %s' % ' '.join(hostfwd))
def setup_tap(self):
"""Setup tap"""
if self.fstype == 'nfs':
self.setup_nfs()
self.kernel_cmdline_script += " ip=192.168.7.%s::192.168.7.%s:255.255.255.0" % (client, gateway)
- mac = "52:54:00:12:34:%02x" % client
+ mac = "%s%02x" % (self.mac_tap, client)
qb_tap_opt = self.get('QB_TAP_OPT')
if qb_tap_opt:
- qemu_tap_opt = qb_tap_opt.replace('@TAP@', tap).replace('@MAC@', mac)
+ qemu_tap_opt = qb_tap_opt.replace('@TAP@', tap)
else:
- qemu_tap_opt = "-device virtio-net-pci,netdev=net0,mac=%s -netdev tap,id=net0,ifname=%s,script=no,downscript=no" % (mac, self.tap)
+ qemu_tap_opt = "-netdev tap,id=net0,ifname=%s,script=no,downscript=no" % (self.tap)
if self.vhost_enabled:
qemu_tap_opt += ',vhost=on'
- self.set('NETWORK_CMD', qemu_tap_opt)
+ self.set('NETWORK_CMD', '%s %s' % (self.network_device.replace('@MAC@', mac), qemu_tap_opt))
def setup_network(self):
cmd = "stty -g"
self.saved_stty = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE).stdout.read().decode('utf-8')
+ self.network_device = self.get('QB_NETWORK_DEVICE') or self.network_device
if self.slirp_enabled:
self.setup_slirp()
else:
