conf: add virDomainHasNet

virDomainNetFindIdx no longer returns info whether device was not found,
or there was multiple matches. Additionally it already handle error
reporting. Introduce virDomainHasNet which does a simple task, without
implicit error reporting.
Signed-off-by: NMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>

src/conf/domain_conf.c

@@ -12016,6 +12016,27 @@ virDomainNetFindIdx(virDomainDefPtr def, virDomainNetDefPtr net)
     return matchidx;
 }
 
+bool
+virDomainHasNet(virDomainDefPtr def, virDomainNetDefPtr net)
+{
+    size_t i;
+    bool PCIAddrSpecified = virDomainDeviceAddressIsValid(&net->info,
+                                                          VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI);
+
+    for (i = 0; i < def->nnets; i++) {
+        if (virMacAddrCmp(&def->nets[i]->mac, &net->mac))
+            continue;
+
+        if (PCIAddrSpecified) {
+            if (virDevicePCIAddressEqual(&def->nets[i]->info.addr.pci,
+                                         &net->info.addr.pci))
+                return true;
+        } else {
+            return true;
+        }
+    }
+    return false;
+}
 
 void
 virDomainNetRemoveHostdev(virDomainDefPtr def,

src/conf/domain_conf.h

@@ -2603,6 +2603,7 @@ bool virDomainHasDiskMirror(virDomainObjPtr vm);
 
 int virDomainNetFindIdx(virDomainDefPtr def, virDomainNetDefPtr net);
 virDomainNetDefPtr virDomainNetFind(virDomainDefPtr def, const char *device);
+bool virDomainHasNet(virDomainDefPtr def, virDomainNetDefPtr net);
 int virDomainNetInsert(virDomainDefPtr def, virDomainNetDefPtr net);
 virDomainNetDefPtr virDomainNetRemove(virDomainDefPtr def, size_t i);
 void virDomainNetRemoveHostdev(virDomainDefPtr def, virDomainNetDefPtr net);

src/libvirt_private.syms

@@ -293,6 +293,7 @@ virDomainGraphicsTypeToString;
 virDomainGraphicsVNCSharePolicyTypeFromString;
 virDomainGraphicsVNCSharePolicyTypeToString;
 virDomainHasDiskMirror;
+virDomainHasNet;
 virDomainHostdevCapsTypeToString;
 virDomainHostdevDefAlloc;
 virDomainHostdevDefClear;