diff options
Diffstat (limited to 'vnfs/qemu/qemu.py')
| -rw-r--r-- | vnfs/qemu/qemu.py | 96 |
1 files changed, 44 insertions, 52 deletions
diff --git a/vnfs/qemu/qemu.py b/vnfs/qemu/qemu.py index 30f073ee..8e3d44de 100644 --- a/vnfs/qemu/qemu.py +++ b/vnfs/qemu/qemu.py @@ -146,13 +146,14 @@ class IVnfQemu(IVnf): """ if self.is_running(): try: - # exit testpmd if needed - if self._guest_loopback == 'testpmd': - self.execute_and_wait('stop', 120, "Done") - self.execute_and_wait('quit', 120, "[bB]ye") + if self._login_active: + # exit testpmd if needed + if self._guest_loopback == 'testpmd': + self.execute_and_wait('stop', 120, "Done") + self.execute_and_wait('quit', 120, "[bB]ye") - # turn off VM - self.execute_and_wait('poweroff', 120, "Power down") + # turn off VM + self.execute_and_wait('poweroff', 120, "Power down") except pexpect.TIMEOUT: self.kill() @@ -169,7 +170,7 @@ class IVnfQemu(IVnf): # helper functions - def _login(self, timeout=120): + def login(self, timeout=120): """ Login to QEMU instance. @@ -178,8 +179,11 @@ class IVnfQemu(IVnf): :param timeout: Timeout to wait for login to complete. - :returns: None + :returns: True if login is active """ + if self._login_active: + return self._login_active + # if no timeout was set, we likely started QEMU without waiting for it # to boot. This being the case, we best check that it has finished # first. @@ -191,21 +195,8 @@ class IVnfQemu(IVnf): self._child.sendline(S.getValue('GUEST_PASSWORD')[self._number]) self._expect_process(S.getValue('GUEST_PROMPT')[self._number], timeout=5) - - def send_and_pass(self, cmd, timeout=30): - """ - Send ``cmd`` and wait ``timeout`` seconds for it to pass. - - :param cmd: Command to send to guest. - :param timeout: Time to wait for prompt before checking return code. - - :returns: None - """ - self.execute(cmd) - self.wait(S.getValue('GUEST_PROMPT')[self._number], timeout=timeout) - self.execute('echo $?') - self._child.expect('^0$', timeout=1) # expect a 0 - self.wait(S.getValue('GUEST_PROMPT')[self._number], timeout=timeout) + self._login_active = True + return self._login_active def _affinitize(self): """ @@ -277,29 +268,31 @@ class IVnfQemu(IVnf): """ Configure VM to run VNF, e.g. port forwarding application based on the configuration """ + if self._guest_loopback == 'buildin': + return + + self.login() + if self._guest_loopback == 'testpmd': - self._login() self._configure_testpmd() elif self._guest_loopback == 'l2fwd': - self._login() self._configure_l2fwd() elif self._guest_loopback == 'linux_bridge': - self._login() self._configure_linux_bridge() - elif self._guest_loopback != 'buildin': - self._logger.error('Unsupported guest loopback method "%s" was specified. Option' - ' "buildin" will be used as a fallback.', self._guest_loopback) + elif self._guest_loopback != 'clean': + raise RuntimeError('Unsupported guest loopback method "%s" was specified.', + self._guest_loopback) def wait(self, prompt=None, timeout=30): if prompt is None: prompt = S.getValue('GUEST_PROMPT')[self._number] - super(IVnfQemu, self).wait(prompt=prompt, timeout=timeout) + return super(IVnfQemu, self).wait(prompt=prompt, timeout=timeout) def execute_and_wait(self, cmd, timeout=30, prompt=None): if prompt is None: prompt = S.getValue('GUEST_PROMPT')[self._number] - super(IVnfQemu, self).execute_and_wait(cmd, timeout=timeout, - prompt=prompt) + return super(IVnfQemu, self).execute_and_wait(cmd, timeout=timeout, + prompt=prompt) def _modify_dpdk_makefile(self): """ @@ -393,7 +386,7 @@ class IVnfQemu(IVnf): 'VSWITCH_JUMBO_FRAMES_SIZE')) self.execute_and_wait('./testpmd {}'.format(testpmd_params), 60, "Done") - self.execute('set fwd ' + self._testpmd_fwd_mode, 1) + self.execute_and_wait('set fwd ' + self._testpmd_fwd_mode, 20, 'testpmd>') self.execute_and_wait('start', 20, 'testpmd>') def _configure_l2fwd(self): @@ -407,12 +400,12 @@ class IVnfQemu(IVnf): # configure all interfaces for nic in self._nics: - self.execute('ip addr add ' + - nic['ip'] + ' dev ' + nic['device']) + self.execute_and_wait('ip addr add ' + + nic['ip'] + ' dev ' + nic['device']) if S.getValue('VSWITCH_JUMBO_FRAMES_ENABLED'): - self.execute('ifconfig {} mtu {}'.format( + self.execute_and_wait('ifconfig {} mtu {}'.format( nic['device'], S.getValue('VSWITCH_JUMBO_FRAMES_SIZE'))) - self.execute('ip link set dev ' + nic['device'] + ' up') + self.execute_and_wait('ip link set dev ' + nic['device'] + ' up') # build and configure system for l2fwd self.execute_and_wait('cd ' + S.getValue('GUEST_OVS_DPDK_DIR')[self._number] + @@ -437,43 +430,42 @@ class IVnfQemu(IVnf): self._configure_disable_firewall() # configure linux bridge - self.execute('brctl addbr br0') + self.execute_and_wait('brctl addbr br0') # add all NICs into the bridge for nic in self._nics: - self.execute('ip addr add ' + - nic['ip'] + ' dev ' + nic['device']) + self.execute_and_wait('ip addr add ' + nic['ip'] + ' dev ' + nic['device']) if S.getValue('VSWITCH_JUMBO_FRAMES_ENABLED'): - self.execute('ifconfig {} mtu {}'.format( + self.execute_and_wait('ifconfig {} mtu {}'.format( nic['device'], S.getValue('VSWITCH_JUMBO_FRAMES_SIZE'))) - self.execute('ip link set dev ' + nic['device'] + ' up') - self.execute('brctl addif br0 ' + nic['device']) + self.execute_and_wait('ip link set dev ' + nic['device'] + ' up') + self.execute_and_wait('brctl addif br0 ' + nic['device']) - self.execute('ip addr add ' + - S.getValue('GUEST_BRIDGE_IP')[self._number] + - ' dev br0') - self.execute('ip link set dev br0 up') + self.execute_and_wait('ip addr add {} dev br0'.format( + S.getValue('GUEST_BRIDGE_IP')[self._number])) + self.execute_and_wait('ip link set dev br0 up') # Add the arp entries for the IXIA ports and the bridge you are using. # Use command line values if provided. trafficgen_mac = S.getValue('VANILLA_TGEN_PORT1_MAC') trafficgen_ip = S.getValue('VANILLA_TGEN_PORT1_IP') - self.execute('arp -s ' + trafficgen_ip + ' ' + trafficgen_mac) + self.execute_and_wait('arp -s ' + trafficgen_ip + ' ' + trafficgen_mac) trafficgen_mac = S.getValue('VANILLA_TGEN_PORT2_MAC') trafficgen_ip = S.getValue('VANILLA_TGEN_PORT2_IP') - self.execute('arp -s ' + trafficgen_ip + ' ' + trafficgen_mac) + self.execute_and_wait('arp -s ' + trafficgen_ip + ' ' + trafficgen_mac) # Enable forwarding - self.execute('sysctl -w net.ipv4.ip_forward=1') + self.execute_and_wait('sysctl -w net.ipv4.ip_forward=1') # Controls source route verification # 0 means no source validation - self.execute('sysctl -w net.ipv4.conf.all.rp_filter=0') + self.execute_and_wait('sysctl -w net.ipv4.conf.all.rp_filter=0') for nic in self._nics: - self.execute('sysctl -w net.ipv4.conf.' + nic['device'] + '.rp_filter=0') + self.execute_and_wait('sysctl -w net.ipv4.conf.' + nic['device'] + + '.rp_filter=0') def _bind_dpdk_driver(self, driver, pci_slots): """ |