[libvirt] [PATCH v3 07/10] conf: Add function virDomainUSBAddressIsAttachedToHub

[Han Han]

Add this function to check if the a usb address is attached to a hub device.

Signed-off-by: Han Han <h...@redhat.com>
---
 src/conf/domain_addr.c   | 22 ++++++++++++++++++++++
 src/conf/domain_addr.h   |  5 +++++
 src/libvirt_private.syms |  1 +
 3 files changed, 28 insertions(+)

diff --git a/src/conf/domain_addr.c b/src/conf/domain_addr.c
index e4ed143b76..722bd2c9fe 100644
--- a/src/conf/domain_addr.c
+++ b/src/conf/domain_addr.c
@@ -2155,6 +2155,28 @@ virDomainUSBAddressEnsure(virDomainUSBAddressSetPtr 
addrs,
 }
 
 
+bool
+virDomainUSBAddressIsAttachedToHub(virDomainDeviceInfoPtr info,
+                                   virDomainHubDefPtr hub)
+{
+    unsigned int *hub_port = hub->info.addr.usb.port;
+    unsigned int *device_port = info->addr.usb.port;
+    size_t i;
+    if (hub->info.addr.usb.bus == info->addr.usb.bus) {
+        for (i = 0; i < VIR_DOMAIN_DEVICE_USB_MAX_PORT_DEPTH; ++i) {
+            if (hub_port[i] == device_port[i])
+                continue;
+            else if (hub_port[i] == 0 && device_port[i] != 0)
+                return true;
+            else
+                return false;
+        }
+    }
+
+    return false;
+}
+
+
 int
 virDomainUSBAddressRelease(virDomainUSBAddressSetPtr addrs,
                            virDomainDeviceInfoPtr info)
diff --git a/src/conf/domain_addr.h b/src/conf/domain_addr.h
index 2a9af9c00b..b1e0714923 100644
--- a/src/conf/domain_addr.h
+++ b/src/conf/domain_addr.h
@@ -285,6 +285,11 @@ virDomainUSBAddressEnsure(virDomainUSBAddressSetPtr addrs,
                           virDomainDeviceInfoPtr info)
     ATTRIBUTE_NONNULL(2);
 
+bool
+virDomainUSBAddressIsAttachedToHub(virDomainDeviceInfoPtr info,
+                                   virDomainHubDefPtr hub)
+    ATTRIBUTE_NONNULL(2);
+
 int
 virDomainUSBAddressRelease(virDomainUSBAddressSetPtr addrs,
                            virDomainDeviceInfoPtr info)
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index b29c2bf62b..b45a7b92b4 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -131,6 +131,7 @@ virDomainPCIControllerModelToConnectType;
 virDomainUSBAddressAssign;
 virDomainUSBAddressCountAllPorts;
 virDomainUSBAddressEnsure;
+virDomainUSBAddressIsAttachedToHub;
 virDomainUSBAddressPortFormatBuf;
 virDomainUSBAddressPortIsValid;
 virDomainUSBAddressPresent;
-- 
2.19.1

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