mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-12-23 22:25:25 +00:00
qemu: Move interface cmd line construction into a separate function
Currently, we have one huge function to construct qemu command line. This is very ineffective esp. if there's a fault somewhere.
This commit is contained in:
Michal Privoznik
parent
7e744f8199
commit
565c07f171
@ -6419,6 +6419,117 @@ qemuBuildGraphicsCommandLine(virQEMUDriverConfigPtr cfg,
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
qemuBuildInterfaceCommandLine(virCommandPtr cmd,
|
||||
virQEMUDriverPtr driver,
|
||||
virConnectPtr conn,
|
||||
virDomainDefPtr def,
|
||||
virDomainNetDefPtr net,
|
||||
virQEMUCapsPtr qemuCaps,
|
||||
int vlan,
|
||||
int bootindex,
|
||||
enum virNetDevVPortProfileOp vmop)
|
||||
{
|
||||
int ret = -1;
|
||||
int tapfd = -1;
|
||||
int vhostfd = -1;
|
||||
char *nic = NULL, *host = NULL;
|
||||
char *tapfdName = NULL;
|
||||
char *vhostfdName = NULL;
|
||||
int actualType = virDomainNetGetActualType(net);
|
||||
|
||||
if (actualType == VIR_DOMAIN_NET_TYPE_HOSTDEV) {
|
||||
/* NET_TYPE_HOSTDEV devices are really hostdev devices, so
|
||||
* their commandlines are constructed with other hostdevs.
|
||||
*/
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (!bootindex)
|
||||
bootindex = net->info.bootIndex;
|
||||
|
||||
if (actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
|
||||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE) {
|
||||
tapfd = qemuNetworkIfaceConnect(def, conn, driver, net, qemuCaps);
|
||||
if (tapfd < 0)
|
||||
goto cleanup;
|
||||
} else if (actualType == VIR_DOMAIN_NET_TYPE_DIRECT) {
|
||||
tapfd = qemuPhysIfaceConnect(def, driver, net, qemuCaps, vmop);
|
||||
if (tapfd < 0)
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
if (actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
|
||||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE ||
|
||||
actualType == VIR_DOMAIN_NET_TYPE_ETHERNET ||
|
||||
actualType == VIR_DOMAIN_NET_TYPE_DIRECT) {
|
||||
/* Attempt to use vhost-net mode for these types of
|
||||
network device */
|
||||
if (qemuOpenVhostNet(def, net, qemuCaps, &vhostfd) < 0)
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
if (tapfd >= 0) {
|
||||
virCommandTransferFD(cmd, tapfd);
|
||||
if (virAsprintf(&tapfdName, "%d", tapfd) < 0) {
|
||||
virReportOOMError();
|
||||
goto cleanup;
|
||||
}
|
||||
}
|
||||
|
||||
if (vhostfd >= 0) {
|
||||
virCommandTransferFD(cmd, vhostfd);
|
||||
if (virAsprintf(&vhostfdName, "%d", vhostfd) < 0) {
|
||||
virReportOOMError();
|
||||
goto cleanup;
|
||||
}
|
||||
}
|
||||
|
||||
/* Possible combinations:
|
||||
*
|
||||
* 1. Old way: -net nic,model=e1000,vlan=1 -net tap,vlan=1
|
||||
* 2. Semi-new: -device e1000,vlan=1 -net tap,vlan=1
|
||||
* 3. Best way: -netdev type=tap,id=netdev1 -device e1000,id=netdev1
|
||||
*
|
||||
* NB, no support for -netdev without use of -device
|
||||
*/
|
||||
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NETDEV) &&
|
||||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
|
||||
if (!(host = qemuBuildHostNetStr(net, driver,
|
||||
',', vlan, tapfdName,
|
||||
vhostfdName)))
|
||||
goto cleanup;
|
||||
virCommandAddArgList(cmd, "-netdev", host, NULL);
|
||||
}
|
||||
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
|
||||
if (!(nic = qemuBuildNicDevStr(net, vlan, bootindex, qemuCaps)))
|
||||
goto cleanup;
|
||||
virCommandAddArgList(cmd, "-device", nic, NULL);
|
||||
} else {
|
||||
if (!(nic = qemuBuildNicStr(net, "nic,", vlan)))
|
||||
goto cleanup;
|
||||
virCommandAddArgList(cmd, "-net", nic, NULL);
|
||||
}
|
||||
if (!(virQEMUCapsGet(qemuCaps, QEMU_CAPS_NETDEV) &&
|
||||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE))) {
|
||||
if (!(host = qemuBuildHostNetStr(net, driver,
|
||||
',', vlan, tapfdName,
|
||||
vhostfdName)))
|
||||
goto cleanup;
|
||||
virCommandAddArgList(cmd, "-net", host, NULL);
|
||||
}
|
||||
|
||||
ret = 0;
|
||||
cleanup:
|
||||
if (ret < 0)
|
||||
virDomainConfNWFilterTeardown(net);
|
||||
VIR_FREE(nic);
|
||||
VIR_FREE(host);
|
||||
VIR_FREE(tapfdName);
|
||||
VIR_FREE(vhostfdName);
|
||||
return ret;
|
||||
}
|
||||
|
||||
qemuBuildCommandLineCallbacks buildCommandLineCallbacks = {
|
||||
.qemuGetSCSIDeviceSgName = virSCSIDeviceGetSgName,
|
||||
};
|
||||
@ -7357,118 +7468,18 @@ qemuBuildCommandLine(virConnectPtr conn,
|
||||
|
||||
for (i = 0; i < def->nnets; i++) {
|
||||
virDomainNetDefPtr net = def->nets[i];
|
||||
char *nic, *host;
|
||||
char tapfd_name[50] = "";
|
||||
char vhostfd_name[50] = "";
|
||||
int vlan;
|
||||
int bootindex = bootNet;
|
||||
int actualType = virDomainNetGetActualType(net);
|
||||
|
||||
if (actualType == VIR_DOMAIN_NET_TYPE_HOSTDEV) {
|
||||
/* NET_TYPE_HOSTDEV devices are really hostdev devices, so
|
||||
* their commandlines are constructed with other hostdevs.
|
||||
*/
|
||||
continue;
|
||||
}
|
||||
|
||||
bootNet = 0;
|
||||
if (!bootindex)
|
||||
bootindex = net->info.bootIndex;
|
||||
int vlan = i;
|
||||
|
||||
/* VLANs are not used with -netdev, so don't record them */
|
||||
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NETDEV) &&
|
||||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE))
|
||||
vlan = -1;
|
||||
else
|
||||
vlan = i;
|
||||
|
||||
if (actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
|
||||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE) {
|
||||
int tapfd = qemuNetworkIfaceConnect(def, conn, driver, net,
|
||||
qemuCaps);
|
||||
if (tapfd < 0)
|
||||
goto error;
|
||||
|
||||
last_good_net = i;
|
||||
virCommandTransferFD(cmd, tapfd);
|
||||
|
||||
if (snprintf(tapfd_name, sizeof(tapfd_name), "%d",
|
||||
tapfd) >= sizeof(tapfd_name))
|
||||
goto no_memory;
|
||||
} else if (actualType == VIR_DOMAIN_NET_TYPE_DIRECT) {
|
||||
int tapfd = qemuPhysIfaceConnect(def, driver, net,
|
||||
qemuCaps, vmop);
|
||||
if (tapfd < 0)
|
||||
goto error;
|
||||
|
||||
last_good_net = i;
|
||||
virCommandTransferFD(cmd, tapfd);
|
||||
|
||||
if (snprintf(tapfd_name, sizeof(tapfd_name), "%d",
|
||||
tapfd) >= sizeof(tapfd_name))
|
||||
goto no_memory;
|
||||
}
|
||||
|
||||
if (actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
|
||||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE ||
|
||||
actualType == VIR_DOMAIN_NET_TYPE_ETHERNET ||
|
||||
actualType == VIR_DOMAIN_NET_TYPE_DIRECT) {
|
||||
/* Attempt to use vhost-net mode for these types of
|
||||
network device */
|
||||
int vhostfd;
|
||||
|
||||
if (qemuOpenVhostNet(def, net, qemuCaps, &vhostfd) < 0)
|
||||
goto error;
|
||||
if (vhostfd >= 0) {
|
||||
virCommandTransferFD(cmd, vhostfd);
|
||||
|
||||
if (snprintf(vhostfd_name, sizeof(vhostfd_name), "%d",
|
||||
vhostfd) >= sizeof(vhostfd_name))
|
||||
goto no_memory;
|
||||
}
|
||||
}
|
||||
/* Possible combinations:
|
||||
*
|
||||
* 1. Old way: -net nic,model=e1000,vlan=1 -net tap,vlan=1
|
||||
* 2. Semi-new: -device e1000,vlan=1 -net tap,vlan=1
|
||||
* 3. Best way: -netdev type=tap,id=netdev1 -device e1000,id=netdev1
|
||||
*
|
||||
* NB, no support for -netdev without use of -device
|
||||
*/
|
||||
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_NETDEV) &&
|
||||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
|
||||
virCommandAddArg(cmd, "-netdev");
|
||||
if (!(host = qemuBuildHostNetStr(net, driver,
|
||||
',', vlan, tapfd_name,
|
||||
vhostfd_name)))
|
||||
goto error;
|
||||
virCommandAddArg(cmd, host);
|
||||
VIR_FREE(host);
|
||||
}
|
||||
if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
|
||||
virCommandAddArg(cmd, "-device");
|
||||
nic = qemuBuildNicDevStr(net, vlan, bootindex, qemuCaps);
|
||||
if (!nic)
|
||||
goto error;
|
||||
virCommandAddArg(cmd, nic);
|
||||
VIR_FREE(nic);
|
||||
} else {
|
||||
virCommandAddArg(cmd, "-net");
|
||||
if (!(nic = qemuBuildNicStr(net, "nic,", vlan)))
|
||||
goto error;
|
||||
virCommandAddArg(cmd, nic);
|
||||
VIR_FREE(nic);
|
||||
}
|
||||
if (!(virQEMUCapsGet(qemuCaps, QEMU_CAPS_NETDEV) &&
|
||||
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE))) {
|
||||
virCommandAddArg(cmd, "-net");
|
||||
if (!(host = qemuBuildHostNetStr(net, driver,
|
||||
',', vlan, tapfd_name,
|
||||
vhostfd_name)))
|
||||
goto error;
|
||||
virCommandAddArg(cmd, host);
|
||||
VIR_FREE(host);
|
||||
}
|
||||
if (qemuBuildInterfaceCommandLine(cmd, driver, conn, def, net,
|
||||
qemuCaps, vlan, bootNet, vmop) < 0)
|
||||
goto error;
|
||||
last_good_net = i;
|
||||
bootNet = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user