[libvirt] [PATCH] Remove code duplication in domain_addr.c
Tomasz Flendrich
t.flendrich at gmail.com
Thu Jul 21 14:40:02 UTC 2016
Two functions, virDomainValidateDevicePCISlotsQ35 and
virDomainValidateDevicePCISlotsPIIX3, had almost exactly the same
code for verifying the PCI address of the primary video device.
The only difference between them was the slot number.
To avoid code duplication, I moved it to a new function:
virDomainValidateVideoDevice.
---
src/conf/domain_addr.c | 218 +++++++++++++++++++++----------------------------
1 file changed, 94 insertions(+), 124 deletions(-)
diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index 7abe44c..9a6f977 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -1391,6 +1391,82 @@ virDomainMachineIsI440FX(const virDomainDef *def)
static int
+virDomainValidateVideoDevice(virDomainDefPtr def,
+ virDomainPCIAddressSetPtr addrs,
+ virDomainPCIConnectFlags flags,
+ bool videoPrimaryEnabled,
+ unsigned int slot)
+{
+ int ret = -1;
+ char *addrStr = NULL;
+ virPCIDeviceAddress tmp_addr;
+
+ if (def->nvideos > 0) {
+ virDomainVideoDefPtr primaryVideo = def->videos[0];
+ if (virDeviceInfoPCIAddressWanted(&primaryVideo->info)) {
+ memset(&tmp_addr, 0, sizeof(tmp_addr));
+ tmp_addr.slot = slot;
+
+ if (!(addrStr = virDomainPCIAddressAsString(&tmp_addr)))
+ goto cleanup;
+ if (!virDomainPCIAddressValidate(addrs, &tmp_addr,
+ addrStr, flags, false))
+ goto cleanup;
+
+ if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
+ if (videoPrimaryEnabled) {
+ if (virDomainPCIAddressReserveNextSlot(addrs,
+ &primaryVideo->info,
+ flags) < 0)
+ goto cleanup;
+ } else {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("PCI address 0:0:%u.0 is in use, "
+ "QEMU needs it for primary video"), slot);
+ goto cleanup;
+ }
+ } else {
+ if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
+ goto cleanup;
+ primaryVideo->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
+ primaryVideo->info.addr.pci = tmp_addr;
+ }
+ } else if (!videoPrimaryEnabled) {
+ if (primaryVideo->info.addr.pci.domain != 0 ||
+ primaryVideo->info.addr.pci.bus != 0 ||
+ primaryVideo->info.addr.pci.slot != slot ||
+ primaryVideo->info.addr.pci.function != 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Primary video card must have "
+ "PCI address 0:0:%u.0"), slot);
+ goto cleanup;
+ }
+ /* If TYPE == PCI, then virDomainCollectPCIAddress() function
+ * has already reserved the address, so we must skip */
+ }
+ } else if (addrs->nbuses && !videoPrimaryEnabled) {
+ memset(&tmp_addr, 0, sizeof(tmp_addr));
+ tmp_addr.slot = slot;
+
+ if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
+ VIR_DEBUG("PCI address 0:0:%u.0 in use, future addition of a video"
+ " device will not be possible without manual"
+ " intervention", slot);
+ virResetLastError();
+ } else if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0) {
+ goto cleanup;
+ }
+ }
+
+ ret = 0;
+
+ cleanup:
+ VIR_FREE(addrStr);
+ return ret;
+}
+
+
+static int
virDomainValidateDevicePCISlotsPIIX3(virDomainDefPtr def,
virDomainPCIAddressSetPtr addrs,
bool videoPrimaryEnabled)
@@ -1398,7 +1474,6 @@ virDomainValidateDevicePCISlotsPIIX3(virDomainDefPtr def,
int ret = -1;
size_t i;
virPCIDeviceAddress tmp_addr;
- char *addrStr = NULL;
virDomainPCIConnectFlags flags = (VIR_PCI_CONNECT_HOTPLUGGABLE
| VIR_PCI_CONNECT_TYPE_PCI_DEVICE);
@@ -1456,69 +1531,17 @@ virDomainValidateDevicePCISlotsPIIX3(virDomainDefPtr def,
goto cleanup;
}
- if (def->nvideos > 0) {
- /* Because the PIIX3 integrated IDE/USB controllers are
- * already at slot 1, when qemu looks for the first free slot
- * to place the VGA controller (which is always the first
- * device added after integrated devices), it *always* ends up
- * at slot 2.
- */
- virDomainVideoDefPtr primaryVideo = def->videos[0];
- if (virDeviceInfoPCIAddressWanted(&primaryVideo->info)) {
- memset(&tmp_addr, 0, sizeof(tmp_addr));
- tmp_addr.slot = 2;
-
- if (!(addrStr = virDomainPCIAddressAsString(&tmp_addr)))
- goto cleanup;
- if (!virDomainPCIAddressValidate(addrs, &tmp_addr,
- addrStr, flags, false))
- goto cleanup;
-
- if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
- if (videoPrimaryEnabled) {
- if (virDomainPCIAddressReserveNextSlot(addrs,
- &primaryVideo->info,
- flags) < 0)
- goto cleanup;
- } else {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("PCI address 0:0:2.0 is in use, "
- "QEMU needs it for primary video"));
- goto cleanup;
- }
- } else {
- if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
- goto cleanup;
- primaryVideo->info.addr.pci = tmp_addr;
- primaryVideo->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
- }
- } else if (!videoPrimaryEnabled) {
- if (primaryVideo->info.addr.pci.domain != 0 ||
- primaryVideo->info.addr.pci.bus != 0 ||
- primaryVideo->info.addr.pci.slot != 2 ||
- primaryVideo->info.addr.pci.function != 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Primary video card must have PCI address 0:0:2.0"));
- goto cleanup;
- }
- /* If TYPE == PCI, then virDomainCollectPCIAddress() function
- * has already reserved the address, so we must skip */
- }
- } else if (addrs->nbuses && !videoPrimaryEnabled) {
- memset(&tmp_addr, 0, sizeof(tmp_addr));
- tmp_addr.slot = 2;
-
- if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
- VIR_DEBUG("PCI address 0:0:2.0 in use, future addition of a video"
- " device will not be possible without manual"
- " intervention");
- } else if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0) {
- goto cleanup;
- }
- }
+ /* Because the PIIX3 integrated IDE/USB controllers are
+ * already at slot 1, when qemu looks for the first free slot
+ * to place the VGA controller (which is always the first
+ * device added after integrated devices), it *always* ends up
+ * at slot 2.
+ */
+ if (virDomainValidateVideoDevice(def, addrs, flags,
+ videoPrimaryEnabled, 2) < 0)
+ goto cleanup;
ret = 0;
cleanup:
- VIR_FREE(addrStr);
return ret;
}
@@ -1531,7 +1554,6 @@ virDomainValidateDevicePCISlotsQ35(virDomainDefPtr def,
int ret = -1;
size_t i;
virPCIDeviceAddress tmp_addr;
- char *addrStr = NULL;
virDomainPCIConnectFlags flags = VIR_PCI_CONNECT_TYPE_PCIE_DEVICE;
for (i = 0; i < def->ncontrollers; i++) {
@@ -1646,70 +1668,18 @@ virDomainValidateDevicePCISlotsQ35(virDomainDefPtr def,
goto cleanup;
}
- if (def->nvideos > 0) {
- /* NB: unlike the pc machinetypes, on q35 machinetypes the
- * integrated devices are at slot 0x1f, so when qemu looks for
- * the first free lot for the first VGA, it will always be at
- * slot 1 (which was used up by the integrated PIIX3 devices
- * on pc machinetypes).
- */
- virDomainVideoDefPtr primaryVideo = def->videos[0];
- if (virDeviceInfoPCIAddressWanted(&primaryVideo->info)) {
- memset(&tmp_addr, 0, sizeof(tmp_addr));
- tmp_addr.slot = 1;
-
- if (!(addrStr = virDomainPCIAddressAsString(&tmp_addr)))
- goto cleanup;
- if (!virDomainPCIAddressValidate(addrs, &tmp_addr,
- addrStr, flags, false))
- goto cleanup;
-
- if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
- if (videoPrimaryEnabled) {
- if (virDomainPCIAddressReserveNextSlot(addrs,
- &primaryVideo->info,
- flags) < 0)
- goto cleanup;
- } else {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("PCI address 0:0:1.0 is in use, "
- "QEMU needs it for primary video"));
- goto cleanup;
- }
- } else {
- if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0)
- goto cleanup;
- primaryVideo->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
- primaryVideo->info.addr.pci = tmp_addr;
- }
- } else if (!videoPrimaryEnabled) {
- if (primaryVideo->info.addr.pci.domain != 0 ||
- primaryVideo->info.addr.pci.bus != 0 ||
- primaryVideo->info.addr.pci.slot != 1 ||
- primaryVideo->info.addr.pci.function != 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Primary video card must have PCI address 0:0:1.0"));
- goto cleanup;
- }
- /* If TYPE == PCI, then virDomainCollectPCIAddress() function
- * has already reserved the address, so we must skip */
- }
- } else if (addrs->nbuses && !videoPrimaryEnabled) {
- memset(&tmp_addr, 0, sizeof(tmp_addr));
- tmp_addr.slot = 1;
+ /* NB: unlike the pc machinetypes, on q35 machinetypes the
+ * integrated devices are at slot 0x1f, so when qemu looks for
+ * the first free lot for the first VGA, it will always be at
+ * slot 1 (which was used up by the integrated PIIX3 devices
+ * on pc machinetypes).
+ */
+ if (virDomainValidateVideoDevice(def, addrs, flags,
+ videoPrimaryEnabled, 1) < 0)
+ goto cleanup;
- if (virDomainPCIAddressSlotInUse(addrs, &tmp_addr)) {
- VIR_DEBUG("PCI address 0:0:1.0 in use, future addition of a video"
- " device will not be possible without manual"
- " intervention");
- virResetLastError();
- } else if (virDomainPCIAddressReserveSlot(addrs, &tmp_addr, flags) < 0) {
- goto cleanup;
- }
- }
ret = 0;
cleanup:
- VIR_FREE(addrStr);
return ret;
}
--
2.7.4 (Apple Git-66)
More information about the libvir-list
mailing list