diff options
Diffstat (limited to 'vnfs/qemu/qemu.py')
| -rw-r--r-- | vnfs/qemu/qemu.py | 116 |
1 files changed, 91 insertions, 25 deletions
diff --git a/vnfs/qemu/qemu.py b/vnfs/qemu/qemu.py index cb6d9ecc..9382edef 100644 --- a/vnfs/qemu/qemu.py +++ b/vnfs/qemu/qemu.py @@ -20,6 +20,8 @@ import logging import locale import re import subprocess +import time +import pexpect from conf import settings as S from conf import get_test_param @@ -62,6 +64,18 @@ class IVnfQemu(IVnf): else: self._net2 = self._net2.split(',')[self._number] + # set guest loopback application based on VNF configuration + # cli option take precedence to config file values + self._guest_loopback = S.getValue('GUEST_LOOPBACK')[self._number] + + self._testpmd_fwd_mode = S.getValue('GUEST_TESTPMD_FWD_MODE') + # in case of SRIOV we must ensure, that MAC addresses are not swapped + if S.getValue('SRIOV_ENABLED') and self._testpmd_fwd_mode.startswith('mac') and \ + not S.getValue('VNF').endswith('PciPassthrough'): + + self._logger.info("SRIOV detected, forwarding mode of testpmd was changed from '%s' to '%s'", + self._testpmd_fwd_mode, 'io') + self._testpmd_fwd_mode = 'io' name = 'Client%d' % self._number vnc = ':%d' % self._number @@ -116,6 +130,32 @@ class IVnfQemu(IVnf): if self._timeout: self._config_guest_loopback() + def stop(self): + """ + Stops VNF instance gracefully first. + """ + 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") + + # turn off VM + self.execute_and_wait('poweroff', 120, "Power down") + + except pexpect.TIMEOUT: + self.kill() + + # wait until qemu shutdowns + self._logger.debug('Wait for QEMU to terminate') + for dummy in range(30): + time.sleep(1) + if not self.is_running(): + break + + # just for case that graceful shutdown failed + super(IVnfQemu, self).stop() + # helper functions def _login(self, timeout=120): @@ -196,24 +236,20 @@ class IVnfQemu(IVnf): def _config_guest_loopback(self): """ - Configure VM to run VNF (e.g. port forwarding application) + Configure VM to run VNF, e.g. port forwarding application based on the configuration """ - # set guest loopback application based on VNF configuration - # cli option take precedence to config file values - guest_loopback = S.getValue('GUEST_LOOPBACK')[self._number] - - if guest_loopback == 'testpmd': + if self._guest_loopback == 'testpmd': self._login() self._configure_testpmd() - elif guest_loopback == 'l2fwd': + elif self._guest_loopback == 'l2fwd': self._login() self._configure_l2fwd() - elif guest_loopback == 'linux_bridge': + elif self._guest_loopback == 'linux_bridge': self._login() self._configure_linux_bridge() - elif guest_loopback != 'buildin': + elif self._guest_loopback != 'buildin': self._logger.error('Unsupported guest loopback method "%s" was specified. Option' - ' "buildin" will be used as a fallback.', guest_loopback) + ' "buildin" will be used as a fallback.', self._guest_loopback) def wait(self, prompt=S.getValue('GUEST_PROMPT'), timeout=30): super(IVnfQemu, self).wait(prompt=prompt, timeout=timeout) @@ -225,7 +261,7 @@ class IVnfQemu(IVnf): def _modify_dpdk_makefile(self): """ - Modifies DPDK makefile in Guest before compilation + Modifies DPDK makefile in Guest before compilation if needed """ pass @@ -234,14 +270,15 @@ class IVnfQemu(IVnf): Mount shared directory and copy DPDK and l2fwd sources """ # mount shared directory - self.execute_and_wait('umount ' + S.getValue('OVS_DPDK_SHARE')) + self.execute_and_wait('umount /dev/sdb1') self.execute_and_wait('rm -rf ' + S.getValue('GUEST_OVS_DPDK_DIR')) self.execute_and_wait('mkdir -p ' + S.getValue('OVS_DPDK_SHARE')) - self.execute_and_wait('mount -o iocharset=utf8 /dev/sdb1 ' + + self.execute_and_wait('mount -o ro,iocharset=utf8 /dev/sdb1 ' + S.getValue('OVS_DPDK_SHARE')) self.execute_and_wait('mkdir -p ' + S.getValue('GUEST_OVS_DPDK_DIR')) - self.execute_and_wait('cp -ra ' + os.path.join(S.getValue('OVS_DPDK_SHARE'), dirname) + + self.execute_and_wait('cp -r ' + os.path.join(S.getValue('OVS_DPDK_SHARE'), dirname) + ' ' + S.getValue('GUEST_OVS_DPDK_DIR')) + self.execute_and_wait('umount /dev/sdb1') def _configure_disable_firewall(self): """ @@ -291,6 +328,11 @@ class IVnfQemu(IVnf): # modify makefile if needed self._modify_dpdk_makefile() + # disable network interfaces, so DPDK can take care of them + self.execute_and_wait('ifdown ' + self._net1) + self.execute_and_wait('ifdown ' + self._net2) + + # build and insert igb_uio and rebind interfaces to it self.execute_and_wait('make RTE_OUTPUT=$RTE_SDK/$RTE_TARGET -C ' '$RTE_SDK/lib/librte_eal/linuxapp/igb_uio') self.execute_and_wait('modprobe uio') @@ -298,21 +340,39 @@ class IVnfQemu(IVnf): S.getValue('RTE_TARGET')) self.execute_and_wait('./tools/dpdk_nic_bind.py --status') self.execute_and_wait( + './tools/dpdk_nic_bind.py -u' ' ' + + S.getValue('GUEST_NET1_PCI_ADDRESS')[self._number] + ' ' + + S.getValue('GUEST_NET2_PCI_ADDRESS')[self._number]) + self.execute_and_wait( './tools/dpdk_nic_bind.py -b igb_uio' ' ' + S.getValue('GUEST_NET1_PCI_ADDRESS')[self._number] + ' ' + S.getValue('GUEST_NET2_PCI_ADDRESS')[self._number]) + self.execute_and_wait('./tools/dpdk_nic_bind.py --status') # build and run 'test-pmd' self.execute_and_wait('cd ' + S.getValue('GUEST_OVS_DPDK_DIR') + '/DPDK/app/test-pmd') self.execute_and_wait('make clean') self.execute_and_wait('make') - self.execute_and_wait('./testpmd -c 0x3 -n 4 --socket-mem 512 --' - ' --burst=64 -i --txqflags=0xf00 ' + - '--disable-hw-vlan', 60, "Done") - self.execute('set fwd mac_retry', 1) + if int(S.getValue('GUEST_NIC_QUEUES')): + self.execute_and_wait( + './testpmd {} -n4 --socket-mem 512 --'.format( + S.getValue('GUEST_TESTPMD_CPU_MASK')) + + ' --burst=64 -i --txqflags=0xf00 ' + + '--nb-cores={} --rxq={} --txq={} '.format( + S.getValue('GUEST_TESTPMD_NB_CORES'), + S.getValue('GUEST_TESTPMD_TXQ'), + S.getValue('GUEST_TESTPMD_RXQ')) + + '--disable-hw-vlan', 60, "Done") + else: + self.execute_and_wait( + './testpmd {} -n 4 --socket-mem 512 --'.format( + S.getValue('GUEST_TESTPMD_CPU_MASK')) + + ' --burst=64 -i --txqflags=0xf00 ' + + '--disable-hw-vlan', 60, "Done") + self.execute('set fwd ' + self._testpmd_fwd_mode, 1) self.execute_and_wait('start', 20, - 'TX RS bit threshold=0 - TXQ flags=0xf00') + 'TX RS bit threshold=.+ - TXQ flags=0xf00') def _configure_l2fwd(self): """ @@ -337,17 +397,23 @@ class IVnfQemu(IVnf): """ self._configure_disable_firewall() - self.execute('ifconfig ' + self._net1 + ' ' + - S.getValue('VANILLA_NIC1_IP_CIDR')[self._number]) + self.execute('ip addr add ' + + S.getValue('VANILLA_NIC1_IP_CIDR')[self._number] + + ' dev ' + self._net1) + self.execute('ip link set dev ' + self._net1 + ' up') - self.execute('ifconfig ' + self._net2 + ' ' + - S.getValue('VANILLA_NIC2_IP_CIDR')[self._number]) + self.execute('ip addr add ' + + S.getValue('VANILLA_NIC2_IP_CIDR')[self._number] + + ' dev ' + self._net2) + self.execute('ip link set dev ' + self._net2 + ' up') # configure linux bridge self.execute('brctl addbr br0') self.execute('brctl addif br0 ' + self._net1 + ' ' + self._net2) - self.execute('ifconfig br0 ' + - S.getValue('VANILLA_BRIDGE_IP')[self._number]) + self.execute('ip addr add ' + + S.getValue('VANILLA_BRIDGE_IP')[self._number] + + ' dev br0') + self.execute('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. |