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https://gitlab.com/libvirt/libvirt.git
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qemuBuildInterfaceCommandLine: Generate via JSON
virtio-net-pci specific properties and their types according to QEMU: tx=<str> ioeventfd=<bool> - on/off (default: true) event_idx=<bool> - on/off (default: true) csum=<bool> - on/off (default: true) gso=<bool> - on/off (default: true) host_tso4=<bool> - on/off (default: true) host_tso6=<bool> - on/off (default: true) host_ecn=<bool> - on/off (default: true) host_ufo=<bool> - on/off (default: true) mrg_rxbuf=<bool> - on/off (default: true) guest_csum=<bool> - on/off (default: true) guest_tso4=<bool> - on/off (default: true) guest_tso6=<bool> - on/off (default: true) guest_ecn=<bool> - on/off (default: true) guest_ufo=<bool> - on/off (default: true) mq=<bool> - on/off (default: false) vectors=<uint32> - (default: 4294967295) rx_queue_size=<uint16> - (default: 256) tx_queue_size=<uint16> - (default: 256) host_mtu=<uint16> - (default: 0) failover=<bool> - (default: false) properties common for all network interfaces: netdev=<str> - ID of a netdev to use as a backend mac=<str> - Ethernet 6-byte MAC Address, example: 52:54:00:12:34:56 bootindex=<int32> Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa
parent
dc481f11a6
commit
ee996fbf7a
@ -3870,37 +3870,30 @@ qemuBuildLegacyNicStr(virDomainNetDef *net)
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}
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char *
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qemuBuildNicDevStr(virDomainDef *def,
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virDomainNetDef *net,
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size_t vhostfdSize,
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virQEMUCaps *qemuCaps)
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virJSONValue *
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qemuBuildNicDevProps(virDomainDef *def,
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virDomainNetDef *net,
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size_t vhostfdSize,
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virQEMUCaps *qemuCaps)
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{
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g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
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bool usingVirtio = false;
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g_autoptr(virJSONValue) props = NULL;
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char macaddr[VIR_MAC_STRING_BUFLEN];
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g_autofree char *netdev = g_strdup_printf("host%s", net->info.alias);
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if (virDomainNetIsVirtioModel(net)) {
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if (qemuBuildVirtioDevStr(&buf, qemuCaps, VIR_DOMAIN_DEVICE_NET, net) < 0) {
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return NULL;
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}
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const char *tx = NULL;
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virTristateSwitch mq = VIR_TRISTATE_SWITCH_ABSENT;
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unsigned long long vectors = 0;
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virTristateSwitch failover = VIR_TRISTATE_SWITCH_ABSENT;
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usingVirtio = true;
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} else {
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virBufferAddStr(&buf, virDomainNetGetModelString(net));
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}
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if (usingVirtio) {
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if (net->driver.virtio.txmode &&
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virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_TX_ALG)) {
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virBufferAddLit(&buf, ",tx=");
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if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_TX_ALG)) {
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switch (net->driver.virtio.txmode) {
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case VIR_DOMAIN_NET_VIRTIO_TX_MODE_IOTHREAD:
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virBufferAddLit(&buf, "bh");
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tx = "bh";
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break;
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case VIR_DOMAIN_NET_VIRTIO_TX_MODE_TIMER:
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virBufferAddLit(&buf, "timer");
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tx = "timer";
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break;
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case VIR_DOMAIN_NET_VIRTIO_TX_MODE_DEFAULT:
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@ -3916,100 +3909,80 @@ qemuBuildNicDevStr(virDomainDef *def,
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return NULL;
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}
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}
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qemuBuildIoEventFdStr(&buf, net->driver.virtio.ioeventfd, qemuCaps);
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if (net->driver.virtio.event_idx) {
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virBufferAsprintf(&buf, ",event_idx=%s",
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virTristateSwitchTypeToString(net->driver.virtio.event_idx));
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}
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if (net->driver.virtio.host.csum) {
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virBufferAsprintf(&buf, ",csum=%s",
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virTristateSwitchTypeToString(net->driver.virtio.host.csum));
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}
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if (net->driver.virtio.host.gso) {
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virBufferAsprintf(&buf, ",gso=%s",
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virTristateSwitchTypeToString(net->driver.virtio.host.gso));
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}
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if (net->driver.virtio.host.tso4) {
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virBufferAsprintf(&buf, ",host_tso4=%s",
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virTristateSwitchTypeToString(net->driver.virtio.host.tso4));
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}
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if (net->driver.virtio.host.tso6) {
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virBufferAsprintf(&buf, ",host_tso6=%s",
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virTristateSwitchTypeToString(net->driver.virtio.host.tso6));
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}
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if (net->driver.virtio.host.ecn) {
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virBufferAsprintf(&buf, ",host_ecn=%s",
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virTristateSwitchTypeToString(net->driver.virtio.host.ecn));
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}
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if (net->driver.virtio.host.ufo) {
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virBufferAsprintf(&buf, ",host_ufo=%s",
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virTristateSwitchTypeToString(net->driver.virtio.host.ufo));
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}
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if (net->driver.virtio.host.mrg_rxbuf) {
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virBufferAsprintf(&buf, ",mrg_rxbuf=%s",
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virTristateSwitchTypeToString(net->driver.virtio.host.mrg_rxbuf));
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}
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if (net->driver.virtio.guest.csum) {
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virBufferAsprintf(&buf, ",guest_csum=%s",
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virTristateSwitchTypeToString(net->driver.virtio.guest.csum));
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}
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if (net->driver.virtio.guest.tso4) {
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virBufferAsprintf(&buf, ",guest_tso4=%s",
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virTristateSwitchTypeToString(net->driver.virtio.guest.tso4));
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}
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if (net->driver.virtio.guest.tso6) {
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virBufferAsprintf(&buf, ",guest_tso6=%s",
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virTristateSwitchTypeToString(net->driver.virtio.guest.tso6));
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}
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if (net->driver.virtio.guest.ecn) {
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virBufferAsprintf(&buf, ",guest_ecn=%s",
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virTristateSwitchTypeToString(net->driver.virtio.guest.ecn));
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}
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if (net->driver.virtio.guest.ufo) {
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virBufferAsprintf(&buf, ",guest_ufo=%s",
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virTristateSwitchTypeToString(net->driver.virtio.guest.ufo));
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}
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if (vhostfdSize > 1) {
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if (net->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW) {
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/* ccw provides a one to one relation of fds to queues and
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* does not support the vectors option
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*/
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virBufferAddLit(&buf, ",mq=on");
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mq = VIR_TRISTATE_SWITCH_ON;
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} else {
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/* As advised at https://www.linux-kvm.org/page/Multiqueue
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* we should add vectors=2*N+2 where N is the vhostfdSize
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*/
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virBufferAsprintf(&buf, ",mq=on,vectors=%zu", 2 * vhostfdSize + 2);
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mq = VIR_TRISTATE_SWITCH_ON;
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vectors = 2 * vhostfdSize + 2;
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}
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}
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if (net->driver.virtio.rx_queue_size)
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virBufferAsprintf(&buf, ",rx_queue_size=%u", net->driver.virtio.rx_queue_size);
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if (net->driver.virtio.tx_queue_size)
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virBufferAsprintf(&buf, ",tx_queue_size=%u", net->driver.virtio.tx_queue_size);
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if (net->mtu)
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virBufferAsprintf(&buf, ",host_mtu=%u", net->mtu);
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if (net->teaming && net->teaming->type == VIR_DOMAIN_NET_TEAMING_TYPE_PERSISTENT)
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virBufferAddLit(&buf, ",failover=on");
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failover = VIR_TRISTATE_SWITCH_ON;
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if (!(props = qemuBuildVirtioDevProps(VIR_DOMAIN_DEVICE_NET, net, qemuCaps)))
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return NULL;
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if (virJSONValueObjectAdd(props,
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"S:tx", tx,
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"T:ioeventfd", net->driver.virtio.ioeventfd,
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"T:event_idx", net->driver.virtio.event_idx,
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"T:csum", net->driver.virtio.host.csum,
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"T:gso", net->driver.virtio.host.gso,
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"T:host_tso4", net->driver.virtio.host.tso4,
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"T:host_tso6", net->driver.virtio.host.tso6,
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"T:host_ecn", net->driver.virtio.host.ecn,
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"T:host_ufo", net->driver.virtio.host.ufo,
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"T:mrg_rxbuf", net->driver.virtio.host.mrg_rxbuf,
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"T:guest_csum", net->driver.virtio.guest.csum,
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"T:guest_tso4", net->driver.virtio.guest.tso4,
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"T:guest_tso6", net->driver.virtio.guest.tso6,
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"T:guest_ecn", net->driver.virtio.guest.ecn,
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"T:guest_ufo", net->driver.virtio.guest.ufo,
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"T:mq", mq,
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"P:vectors", vectors,
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"p:rx_queue_size", net->driver.virtio.rx_queue_size,
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"p:tx_queue_size", net->driver.virtio.tx_queue_size,
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"p:host_mtu", net->mtu,
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"T:failover", failover,
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NULL) < 0)
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return NULL;
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} else {
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if (virJSONValueObjectCreate(&props,
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"s:driver", virDomainNetGetModelString(net),
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NULL) < 0)
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return NULL;
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}
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virBufferAsprintf(&buf, ",netdev=host%s", net->info.alias);
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virBufferAsprintf(&buf, ",id=%s", net->info.alias);
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virBufferAsprintf(&buf, ",mac=%s",
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virMacAddrFormat(&net->mac, macaddr));
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virMacAddrFormat(&net->mac, macaddr);
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if (qemuBuildDeviceAddressStr(&buf, def, &net->info) < 0)
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if (virJSONValueObjectAdd(props,
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"s:netdev", netdev,
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"s:id", net->info.alias,
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"s:mac", macaddr,
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NULL) < 0)
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return NULL;
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if (qemuBuildRomStr(&buf, &net->info) < 0)
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return NULL;
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if (net->info.effectiveBootIndex > 0)
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virBufferAsprintf(&buf, ",bootindex=%u", net->info.effectiveBootIndex);
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return virBufferContentAndReset(&buf);
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if (qemuBuildDeviceAddressProps(props, def, &net->info) < 0)
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return NULL;
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if (qemuBuildRomProps(props, &net->info) < 0)
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return NULL;
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if (virJSONValueObjectAdd(props,
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"p:bootindex", net->info.effectiveBootIndex,
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NULL) < 0)
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return NULL;
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return g_steal_pointer(&props);
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}
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@ -8778,6 +8751,7 @@ qemuBuildInterfaceCommandLine(virQEMUDriver *driver,
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{
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virDomainDef *def = vm->def;
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int ret = -1;
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g_autoptr(virJSONValue) nicprops = NULL;
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g_autofree char *nic = NULL;
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g_autofree char *chardev = NULL;
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int *tapfd = NULL;
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@ -9041,9 +9015,10 @@ qemuBuildInterfaceCommandLine(virQEMUDriver *driver,
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if (qemuCommandAddExtDevice(cmd, &net->info, qemuCaps) < 0)
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goto cleanup;
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if (!(nic = qemuBuildNicDevStr(def, net, net->driver.virtio.queues, qemuCaps)))
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if (!(nicprops = qemuBuildNicDevProps(def, net, net->driver.virtio.queues, qemuCaps)))
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goto cleanup;
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if (qemuBuildDeviceCommandlineFromJSON(cmd, nicprops, qemuCaps) < 0)
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goto cleanup;
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virCommandAddArgList(cmd, "-device", nic, NULL);
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} else if (!requireNicdev) {
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if (qemuCommandAddExtDevice(cmd, &net->info, qemuCaps) < 0)
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goto cleanup;
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@ -98,10 +98,11 @@ virJSONValue *qemuBuildHostNetStr(virDomainNetDef *net,
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const char *vdpadev);
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/* Current, best practice */
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char *qemuBuildNicDevStr(virDomainDef *def,
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virDomainNetDef *net,
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size_t vhostfdSize,
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virQEMUCaps *qemuCaps);
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virJSONValue *
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qemuBuildNicDevProps(virDomainDef *def,
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virDomainNetDef *net,
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size_t vhostfdSize,
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virQEMUCaps *qemuCaps);
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char *qemuDeviceDriveHostAlias(virDomainDiskDef *disk);
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bool qemuDiskBusIsSD(int bus);
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@ -1175,7 +1175,7 @@ qemuDomainAttachNetDevice(virQEMUDriver *driver,
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int *vhostfd = NULL;
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size_t vhostfdSize = 0;
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size_t queueSize = 0;
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g_autofree char *nicstr = NULL;
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g_autoptr(virJSONValue) nicprops = NULL;
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g_autoptr(virJSONValue) netprops = NULL;
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int ret = -1;
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bool releaseaddr = false;
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@ -1484,7 +1484,7 @@ qemuDomainAttachNetDevice(virQEMUDriver *driver,
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for (i = 0; i < vhostfdSize; i++)
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VIR_FORCE_CLOSE(vhostfd[i]);
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if (!(nicstr = qemuBuildNicDevStr(vm->def, net, queueSize, priv->qemuCaps)))
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if (!(nicprops = qemuBuildNicDevProps(vm->def, net, queueSize, priv->qemuCaps)))
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goto try_remove;
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qemuDomainObjEnterMonitor(driver, vm);
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@ -1495,7 +1495,7 @@ qemuDomainAttachNetDevice(virQEMUDriver *driver,
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goto try_remove;
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}
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if (qemuMonitorAddDevice(priv->mon, nicstr) < 0) {
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if (qemuMonitorAddDeviceProps(priv->mon, &nicprops) < 0) {
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ignore_value(qemuDomainDetachExtensionDevice(priv->mon, &net->info));
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ignore_value(qemuDomainObjExitMonitor(driver, vm));
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virDomainAuditNet(vm, NULL, net, "attach", false);
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