diff options
Diffstat (limited to 'vnfs/qemu/qemu.py')
| -rw-r--r-- | vnfs/qemu/qemu.py | 127 |
1 files changed, 71 insertions, 56 deletions
diff --git a/vnfs/qemu/qemu.py b/vnfs/qemu/qemu.py index 01c16a0f..997f93e0 100644 --- a/vnfs/qemu/qemu.py +++ b/vnfs/qemu/qemu.py @@ -24,7 +24,6 @@ import time import pexpect from conf import settings as S -from conf import get_test_param from vnfs.vnf.vnf import IVnf class IVnfQemu(IVnf): @@ -69,7 +68,6 @@ class IVnfQemu(IVnf): self._nics = S.getValue('GUEST_NICS')[self._number][:nics_nr] # 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')[self._number] @@ -83,9 +81,11 @@ class IVnfQemu(IVnf): name = 'Client%d' % self._number vnc = ':%d' % self._number - # don't use taskset to affinize main qemu process; It causes hangup - # of 2nd VM in case of DPDK. It also slows down VM responsivnes. - self._cmd = ['sudo', '-E', S.getValue('TOOLS')['qemu-system'], + # NOTE: affinization of main qemu process can cause hangup of 2nd VM + # in case of DPDK usage. It can also slow down VM response time. + cpumask = ",".join(S.getValue('GUEST_CORE_BINDING')[self._number]) + self._cmd = ['sudo', '-E', 'taskset', '-c', cpumask, + S.getValue('TOOLS')['qemu-system'], '-m', S.getValue('GUEST_MEMORY')[self._number], '-smp', str(S.getValue('GUEST_SMP')[self._number]), '-cpu', 'host,migratable=off', @@ -144,27 +144,28 @@ class IVnfQemu(IVnf): """ 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") + 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") - # 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() + 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 + # 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() + # just for case that graceful shutdown failed + super(IVnfQemu, self).stop() # helper functions @@ -340,7 +341,6 @@ class IVnfQemu(IVnf): self.execute_and_wait("{} -t {} -F".format(iptables, table)) self.execute_and_wait("{} -t {} -X".format(iptables, table)) - def _configure_testpmd(self): """ Configure VM to perform L2 forwarding between NICs by DPDK's testpmd @@ -372,16 +372,11 @@ class IVnfQemu(IVnf): for nic in self._nics: self.execute_and_wait('ifdown ' + nic['device']) - # 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') - self.execute_and_wait('insmod %s/kmod/igb_uio.ko' % - S.getValue('RTE_TARGET')) self.execute_and_wait('./tools/dpdk*bind.py --status') pci_list = ' '.join([nic['pci'] for nic in self._nics]) self.execute_and_wait('./tools/dpdk*bind.py -u ' + pci_list) - self.execute_and_wait('./tools/dpdk*bind.py -b igb_uio ' + pci_list) + self._bind_dpdk_driver(S.getValue( + 'GUEST_DPDK_BIND_DRIVER')[self._number], pci_list) self.execute_and_wait('./tools/dpdk*bind.py --status') # build and run 'test-pmd' @@ -389,25 +384,13 @@ class IVnfQemu(IVnf): '/DPDK/app/test-pmd') self.execute_and_wait('make clean') self.execute_and_wait('make') - if int(S.getValue('GUEST_NIC_QUEUES')[self._number]): - self.execute_and_wait( - './testpmd {} -n4 --socket-mem 512 --'.format( - S.getValue('GUEST_TESTPMD_CPU_MASK')[self._number]) + - ' --burst=64 -i --txqflags=0xf00 ' + - '--nb-cores={} --rxq={} --txq={} '.format( - S.getValue('GUEST_TESTPMD_NB_CORES')[self._number], - S.getValue('GUEST_TESTPMD_TXQ')[self._number], - S.getValue('GUEST_TESTPMD_RXQ')[self._number]) + - '--disable-hw-vlan', 60, "Done") - else: - self.execute_and_wait( - './testpmd {} -n 4 --socket-mem 512 --'.format( - S.getValue('GUEST_TESTPMD_CPU_MASK')[self._number]) + - ' --burst=64 -i --txqflags=0xf00 ' + - '--disable-hw-vlan', 60, "Done") + + # get testpmd settings from CLI + testpmd_params = S.getValue('GUEST_TESTPMD_PARAMS')[self._number] + + self.execute_and_wait('./testpmd {}'.format(testpmd_params), 60, "Done") self.execute('set fwd ' + self._testpmd_fwd_mode, 1) - self.execute_and_wait('start', 20, - 'TX RS bit threshold=.+ - TXQ flags=0xf00') + self.execute_and_wait('start', 20, 'testpmd>') def _configure_l2fwd(self): """ @@ -463,17 +446,13 @@ class IVnfQemu(IVnf): # Add the arp entries for the IXIA ports and the bridge you are using. # Use command line values if provided. - trafficgen_mac = get_test_param('vanilla_tgen_port1_mac', - S.getValue('VANILLA_TGEN_PORT1_MAC')) - trafficgen_ip = get_test_param('vanilla_tgen_port1_ip', - S.getValue('VANILLA_TGEN_PORT1_IP')) + trafficgen_mac = S.getValue('VANILLA_TGEN_PORT1_MAC') + trafficgen_ip = S.getValue('VANILLA_TGEN_PORT1_IP') self.execute('arp -s ' + trafficgen_ip + ' ' + trafficgen_mac) - trafficgen_mac = get_test_param('vanilla_tgen_port2_mac', - S.getValue('VANILLA_TGEN_PORT2_MAC')) - trafficgen_ip = get_test_param('vanilla_tgen_port2_ip', - S.getValue('VANILLA_TGEN_PORT2_IP')) + trafficgen_mac = S.getValue('VANILLA_TGEN_PORT2_MAC') + trafficgen_ip = S.getValue('VANILLA_TGEN_PORT2_IP') self.execute('arp -s ' + trafficgen_ip + ' ' + trafficgen_mac) @@ -486,6 +465,42 @@ class IVnfQemu(IVnf): for nic in self._nics: self.execute('sysctl -w net.ipv4.conf.' + nic['device'] + '.rp_filter=0') + def _bind_dpdk_driver(self, driver, pci_slots): + """ + Bind the virtual nics to the driver specific in the conf file + :return: None + """ + if driver == 'uio_pci_generic': + if S.getValue('VNF') == 'QemuPciPassthrough': + # unsupported config, bind to igb_uio instead and exit the + # outer function after completion. + self._logger.error('SR-IOV does not support uio_pci_generic. ' + 'Igb_uio will be used instead.') + self._bind_dpdk_driver('igb_uio_from_src', pci_slots) + return + self.execute_and_wait('modprobe uio_pci_generic') + self.execute_and_wait('./tools/dpdk*bind.py -b uio_pci_generic '+ + pci_slots) + elif driver == 'vfio_no_iommu': + self.execute_and_wait('modprobe -r vfio') + self.execute_and_wait('modprobe -r vfio_iommu_type1') + self.execute_and_wait('modprobe vfio enable_unsafe_noiommu_mode=Y') + self.execute_and_wait('modprobe vfio-pci') + self.execute_and_wait('./tools/dpdk*bind.py -b vfio-pci ' + + pci_slots) + elif driver == 'igb_uio_from_src': + # 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') + self.execute_and_wait('insmod %s/kmod/igb_uio.ko' % + S.getValue('RTE_TARGET')) + self.execute_and_wait('./tools/dpdk*bind.py -b igb_uio ' + pci_slots) + else: + self._logger.error( + 'Unknown driver for binding specified, defaulting to igb_uio') + self._bind_dpdk_driver('igb_uio_from_src', pci_slots) + def _set_multi_queue_nic(self): """ Enable multi-queue in guest kernel with ethool. |