[PATCH v3 02/10] qemu: Allow coldunplugging of hub device

[Han Han <hhan@xxxxxxxxxx>]

https://bugzilla.redhat.com/show_bug.cgi?id=1375423

Signed-off-by: Han Han <hhan@xxxxxxxxxx>
---
 src/conf/domain_conf.c   | 30 ++++++++++++++++++++++++++++++
 src/conf/domain_conf.h   |  3 +++
 src/libvirt_private.syms |  1 +
 src/qemu/qemu_driver.c   | 10 +++++++++-
 4 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 237540bccc..a2655bc29b 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -17652,6 +17652,36 @@ virDomainVsockDefEquals(const virDomainVsockDef *a,
 }
 
 
+static bool
+virDomainHubDefEquals(const virDomainHubDef *a,
+                      const virDomainHubDef *b)
+{
+    if (a->type != b->type)
+        return false;
+
+    if (a->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
+        !virDomainDeviceInfoAddressIsEqual(&a->info, &b->info))
+        return false;
+
+    return true;
+}
+
+
+ssize_t
+virDomainHubDefFind(const virDomainDef *def,
+                    const virDomainHubDef *hub)
+{
+    size_t i;
+
+    for (i = 0; i < def->nhubs; i++) {
+        if (virDomainHubDefEquals(hub, def->hubs[i]))
+            return i;
+    }
+
+    return -1;
+}
+
+
 char *
 virDomainDefGetDefaultEmulator(virDomainDefPtr def,
                                virCapsPtr caps)
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index e30a4b2fe7..c2d0877170 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3365,6 +3365,9 @@ virDomainShmemDefPtr virDomainShmemDefRemove(virDomainDefPtr def, size_t idx)
 ssize_t virDomainInputDefFind(const virDomainDef *def,
                               const virDomainInputDef *input)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
+ssize_t virDomainHubDefFind(const virDomainDef *def,
+                              const virDomainHubDef *hub)
+    ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
 bool virDomainVsockDefEquals(const virDomainVsockDef *a,
                              const virDomainVsockDef *b)
     ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 335210c31d..6245927673 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -399,6 +399,7 @@ virDomainHostdevRemove;
 virDomainHostdevSubsysPCIBackendTypeToString;
 virDomainHostdevSubsysTypeToString;
 virDomainHPTResizingTypeToString;
+virDomainHubDefFind;
 virDomainHubTypeFromString;
 virDomainHubTypeToString;
 virDomainHypervTypeFromString;
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 1e5a69358b..4209f017c7 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -8338,10 +8338,18 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef,
         vmdef->vsock = NULL;
         break;
 
+    case VIR_DOMAIN_DEVICE_HUB:
+        if ((idx = virDomainHubDefFind(vmdef, dev->data.hub)) < 0) {
+            virReportError(VIR_ERR_DEVICE_MISSING, "%s",
+                           _("matching hub device not found"));
+            return -1;
+        }
+        VIR_DELETE_ELEMENT(vmdef->hubs, idx, vmdef->nhubs);
+        break;
+
     case VIR_DOMAIN_DEVICE_SOUND:
     case VIR_DOMAIN_DEVICE_VIDEO:
     case VIR_DOMAIN_DEVICE_GRAPHICS:
-    case VIR_DOMAIN_DEVICE_HUB:
     case VIR_DOMAIN_DEVICE_SMARTCARD:
     case VIR_DOMAIN_DEVICE_MEMBALLOON:
     case VIR_DOMAIN_DEVICE_NVRAM:
-- 
2.19.1

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