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@@ -261,6 +261,7 @@ Tcp6GetSubnetInfo (
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Tcp6 = (EFI_TCP6_PROTOCOL *)Instance->NetworkInterfaceProtocolInfo.NetworkProtocolInterface;
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+ ZeroMem ((VOID *)&IpModedata, sizeof (EFI_IP6_MODE_DATA));
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Status = Tcp6->GetModeData (Tcp6, NULL, NULL, &IpModedata, NULL, NULL);
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if (EFI_ERROR (Status)) {
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DEBUG ((DEBUG_ERROR, "%a: Can't get IP mode data information\n", __FUNCTION__));
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@@ -282,12 +283,15 @@ Tcp6GetSubnetInfo (
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}
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Instance->SubnetAddrInfoIPv6Number = IpModedata.AddressCount;
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- CopyMem (
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- (VOID *)Instance->SubnetAddrInfoIPv6,
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- (VOID *)&IpModedata.AddressList,
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- IpModedata.AddressCount * sizeof (EFI_IP6_ADDRESS_INFO)
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- );
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- FreePool (IpModedata.AddressList);
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+ if ((IpModedata.AddressCount != 0) && (IpModedata.AddressList != NULL)) {
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+ CopyMem (
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+ (VOID *)Instance->SubnetAddrInfoIPv6,
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+ (VOID *)&IpModedata.AddressList,
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+ IpModedata.AddressCount * sizeof (EFI_IP6_ADDRESS_INFO)
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+ );
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+ FreePool (IpModedata.AddressList);
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+ }
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+
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return EFI_SUCCESS;
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}
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