diff --git a/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.Ssl.ProtocolSupport.cs b/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.Ssl.ProtocolSupport.cs
index 29efbe7b040b2..f0f7356bbe9f3 100644
--- a/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.Ssl.ProtocolSupport.cs
+++ b/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.Ssl.ProtocolSupport.cs
@@ -8,11 +8,11 @@ internal static partial class Interop
 {
     internal static partial class AndroidCrypto
     {
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLGetSupportedProtocols")]
-        internal static extern SslProtocols SSLGetSupportedProtocols();
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLGetSupportedProtocols")]
+        internal static partial SslProtocols SSLGetSupportedProtocols();
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLSupportsApplicationProtocolsConfiguration")]
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLSupportsApplicationProtocolsConfiguration")]
         [return:MarshalAs(UnmanagedType.U1)]
-        internal static extern bool SSLSupportsApplicationProtocolsConfiguration();
+        internal static partial bool SSLSupportsApplicationProtocolsConfiguration();
     }
 }
diff --git a/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.Ssl.cs b/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.Ssl.cs
index 6f0c53bac516c..f1200eabdd2a7 100644
--- a/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.Ssl.cs
+++ b/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.Ssl.cs
@@ -31,11 +31,11 @@ internal enum PAL_SSLStreamStatus
             Closed = 4,
         };
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamCreate")]
-        internal static extern SafeSslHandle SSLStreamCreate();
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamCreate")]
+        internal static partial SafeSslHandle SSLStreamCreate();
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamCreateWithCertificates")]
-        private static extern SafeSslHandle SSLStreamCreateWithCertificates(
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamCreateWithCertificates")]
+        private static partial SafeSslHandle SSLStreamCreateWithCertificates(
             ref byte pkcs8PrivateKey,
             int pkcs8PrivateKeyLen,
             PAL_KeyAlgorithm algorithm,
@@ -51,8 +51,8 @@ ref MemoryMarshal.GetReference(pkcs8PrivateKey),
                 certificates.Length);
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamInitialize")]
-        private static extern int SSLStreamInitializeImpl(
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamInitialize")]
+        private static partial int SSLStreamInitializeImpl(
             SafeSslHandle sslHandle,
             [MarshalAs(UnmanagedType.U1)] bool isServer,
             SSLReadCallback streamRead,
@@ -70,8 +70,8 @@ internal static void SSLStreamInitialize(
                 throw new SslException();
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamSetTargetHost")]
-        private static extern int SSLStreamSetTargetHostImpl(
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamSetTargetHost")]
+        private static partial int SSLStreamSetTargetHostImpl(
             SafeSslHandle sslHandle,
             [MarshalAs(UnmanagedType.LPUTF8Str)] string targetHost);
         internal static void SSLStreamSetTargetHost(
@@ -85,8 +85,8 @@ internal static void SSLStreamSetTargetHost(
                 throw new SslException();
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamRequestClientAuthentication")]
-        internal static extern void SSLStreamRequestClientAuthentication(SafeSslHandle sslHandle);
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamRequestClientAuthentication")]
+        internal static partial void SSLStreamRequestClientAuthentication(SafeSslHandle sslHandle);
 
         [StructLayout(LayoutKind.Sequential)]
         private unsafe struct ApplicationProtocolData
@@ -95,8 +95,8 @@ private unsafe struct ApplicationProtocolData
             public int Length;
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamSetApplicationProtocols")]
-        private static unsafe extern int SSLStreamSetApplicationProtocols(SafeSslHandle sslHandle, ApplicationProtocolData[] protocolData, int count);
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamSetApplicationProtocols")]
+        private static unsafe partial int SSLStreamSetApplicationProtocols(SafeSslHandle sslHandle, ApplicationProtocolData[] protocolData, int count);
         internal static unsafe void SSLStreamSetApplicationProtocols(SafeSslHandle sslHandle, List<SslApplicationProtocol> protocols)
         {
             int count = protocols.Count;
@@ -129,8 +129,8 @@ internal static unsafe void SSLStreamSetApplicationProtocols(SafeSslHandle sslHa
             }
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamSetEnabledProtocols")]
-        private static extern int SSLStreamSetEnabledProtocols(SafeSslHandle sslHandle, ref SslProtocols protocols, int length);
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamSetEnabledProtocols")]
+        private static partial int SSLStreamSetEnabledProtocols(SafeSslHandle sslHandle, ref SslProtocols protocols, int length);
         internal static void SSLStreamSetEnabledProtocols(SafeSslHandle sslHandle, ReadOnlySpan<SslProtocols> protocols)
         {
             int ret = SSLStreamSetEnabledProtocols(sslHandle, ref MemoryMarshal.GetReference(protocols), protocols.Length);
@@ -138,11 +138,11 @@ internal static void SSLStreamSetEnabledProtocols(SafeSslHandle sslHandle, ReadO
                 throw new SslException();
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamHandshake")]
-        internal static extern PAL_SSLStreamStatus SSLStreamHandshake(SafeSslHandle sslHandle);
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamHandshake")]
+        internal static partial PAL_SSLStreamStatus SSLStreamHandshake(SafeSslHandle sslHandle);
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetApplicationProtocol")]
-        private static extern int SSLStreamGetApplicationProtocol(SafeSslHandle ssl, [Out] byte[]? buf, ref int len);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetApplicationProtocol")]
+        private static partial int SSLStreamGetApplicationProtocol(SafeSslHandle ssl, byte[]? buf, ref int len);
         internal static byte[]? SSLStreamGetApplicationProtocol(SafeSslHandle ssl)
         {
             int len = 0;
@@ -158,8 +158,8 @@ internal static void SSLStreamSetEnabledProtocols(SafeSslHandle sslHandle, ReadO
             return bytes;
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamRead")]
-        private static unsafe extern PAL_SSLStreamStatus SSLStreamRead(
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamRead")]
+        private static unsafe partial PAL_SSLStreamStatus SSLStreamRead(
             SafeSslHandle sslHandle,
             byte* buffer,
             int length,
@@ -175,8 +175,8 @@ internal static unsafe PAL_SSLStreamStatus SSLStreamRead(
             }
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamWrite")]
-        private static unsafe extern PAL_SSLStreamStatus SSLStreamWrite(
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamWrite")]
+        private static unsafe partial PAL_SSLStreamStatus SSLStreamWrite(
             SafeSslHandle sslHandle,
             byte* buffer,
             int length);
@@ -190,8 +190,8 @@ internal static unsafe PAL_SSLStreamStatus SSLStreamWrite(
             }
         }
 
-        [DllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamRelease")]
-        internal static extern void SSLStreamRelease(IntPtr ptr);
+        [GeneratedDllImport(Interop.Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamRelease")]
+        internal static partial void SSLStreamRelease(IntPtr ptr);
 
         internal sealed class SslException : Exception
         {
@@ -205,8 +205,8 @@ internal SslException(int errorCode)
             }
         }
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetProtocol")]
-        private static extern int SSLStreamGetProtocol(SafeSslHandle ssl, out IntPtr protocol);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetProtocol")]
+        private static partial int SSLStreamGetProtocol(SafeSslHandle ssl, out IntPtr protocol);
         internal static string SSLStreamGetProtocol(SafeSslHandle ssl)
         {
             IntPtr protocolPtr;
@@ -222,11 +222,11 @@ internal static string SSLStreamGetProtocol(SafeSslHandle ssl)
             return protocol;
         }
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetPeerCertificate")]
-        internal static extern SafeX509Handle SSLStreamGetPeerCertificate(SafeSslHandle ssl);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetPeerCertificate")]
+        internal static partial SafeX509Handle SSLStreamGetPeerCertificate(SafeSslHandle ssl);
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetPeerCertificates")]
-        private static extern void SSLStreamGetPeerCertificates(
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetPeerCertificates")]
+        private static partial void SSLStreamGetPeerCertificates(
             SafeSslHandle ssl,
             [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)] out IntPtr[] certs,
             out int count);
@@ -238,8 +238,8 @@ private static extern void SSLStreamGetPeerCertificates(
             return ptrs;
         }
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetCipherSuite")]
-        private static extern int SSLStreamGetCipherSuite(SafeSslHandle ssl, out IntPtr cipherSuite);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamGetCipherSuite")]
+        private static partial int SSLStreamGetCipherSuite(SafeSslHandle ssl, out IntPtr cipherSuite);
         internal static string SSLStreamGetCipherSuite(SafeSslHandle ssl)
         {
             IntPtr cipherSuitePtr;
@@ -255,13 +255,13 @@ internal static string SSLStreamGetCipherSuite(SafeSslHandle ssl)
             return cipherSuite;
         }
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamShutdown")]
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamShutdown")]
         [return: MarshalAs(UnmanagedType.U1)]
-        internal static extern bool SSLStreamShutdown(SafeSslHandle ssl);
+        internal static partial bool SSLStreamShutdown(SafeSslHandle ssl);
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamVerifyHostname")]
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_SSLStreamVerifyHostname")]
         [return: MarshalAs(UnmanagedType.U1)]
-        internal static extern bool SSLStreamVerifyHostname(
+        internal static partial bool SSLStreamVerifyHostname(
             SafeSslHandle ssl,
             [MarshalAs(UnmanagedType.LPUTF8Str)] string hostname);
     }
diff --git a/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.X509.cs b/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.X509.cs
index 5c3f986eb314d..ee0bf3c7e552e 100644
--- a/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.X509.cs
+++ b/src/libraries/Common/src/Interop/Android/System.Security.Cryptography.Native.Android/Interop.X509.cs
@@ -13,11 +13,11 @@ internal static partial class AndroidCrypto
         private const int INSUFFICIENT_BUFFER = -1;
         private const int SUCCESS = 1;
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509Decode")]
-        internal static extern SafeX509Handle X509Decode(ref byte buf, int len);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509Decode")]
+        internal static partial SafeX509Handle X509Decode(ref byte buf, int len);
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509Encode")]
-        private static extern int X509Encode(SafeX509Handle x, [Out] byte[]? buf, ref int len);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509Encode")]
+        private static partial int X509Encode(SafeX509Handle x, byte[]? buf, ref int len);
         internal static byte[] X509Encode(SafeX509Handle x)
         {
             int len = 0;
@@ -33,8 +33,8 @@ internal static byte[] X509Encode(SafeX509Handle x)
             return encoded;
         }
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509DecodeCollection")]
-        private static extern int X509DecodeCollection(ref byte buf, int bufLen, IntPtr[]? ptrs, ref int handlesLen);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509DecodeCollection")]
+        private static partial int X509DecodeCollection(ref byte buf, int bufLen, IntPtr[]? ptrs, ref int handlesLen);
         internal static SafeX509Handle[] X509DecodeCollection(ReadOnlySpan<byte> data)
         {
             ref byte buf = ref MemoryMarshal.GetReference(data);
@@ -60,8 +60,8 @@ internal static SafeX509Handle[] X509DecodeCollection(ReadOnlySpan<byte> data)
             return handles;
         }
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509ExportPkcs7")]
-        private static extern int X509ExportPkcs7(IntPtr[] certs, int certsLen, [Out] byte[]? buf, ref int len);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509ExportPkcs7")]
+        private static partial int X509ExportPkcs7(IntPtr[] certs, int certsLen, byte[]? buf, ref int len);
         internal static byte[] X509ExportPkcs7(IntPtr[] certHandles)
         {
             int len = 0;
@@ -77,8 +77,8 @@ internal static byte[] X509ExportPkcs7(IntPtr[] certHandles)
             return encoded;
         }
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509GetContentType")]
-        private static extern X509ContentType X509GetContentType(ref byte buf, int len);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509GetContentType")]
+        private static partial X509ContentType X509GetContentType(ref byte buf, int len);
         internal static X509ContentType X509GetContentType(ReadOnlySpan<byte> data)
         {
             return X509GetContentType(ref MemoryMarshal.GetReference(data), data.Length);
@@ -92,8 +92,8 @@ internal enum PAL_KeyAlgorithm
             UnknownAlgorithm = -1,
         }
 
-        [DllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509PublicKey")]
-        internal static extern IntPtr X509GetPublicKey(SafeX509Handle x, PAL_KeyAlgorithm algorithm);
+        [GeneratedDllImport(Libraries.AndroidCryptoNative, EntryPoint = "AndroidCryptoNative_X509PublicKey")]
+        internal static partial IntPtr X509GetPublicKey(SafeX509Handle x, PAL_KeyAlgorithm algorithm);
     }
 }
 
diff --git a/src/libraries/Common/src/Interop/BSD/System.Native/Interop.ProtocolStatistics.cs b/src/libraries/Common/src/Interop/BSD/System.Native/Interop.ProtocolStatistics.cs
index 476b7a653edb1..b7548f7138514 100644
--- a/src/libraries/Common/src/Interop/BSD/System.Native/Interop.ProtocolStatistics.cs
+++ b/src/libraries/Common/src/Interop/BSD/System.Native/Interop.ProtocolStatistics.cs
@@ -33,8 +33,8 @@ public readonly struct TcpGlobalStatistics
             private readonly int __padding;
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetTcpGlobalStatistics")]
-        public static unsafe extern int GetTcpGlobalStatistics(TcpGlobalStatistics* statistics);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetTcpGlobalStatistics")]
+        public static unsafe partial int GetTcpGlobalStatistics(TcpGlobalStatistics* statistics);
 
         [StructLayoutAttribute(LayoutKind.Sequential)]
         public readonly struct IPv4GlobalStatistics
@@ -55,8 +55,8 @@ public readonly struct IPv4GlobalStatistics
             public readonly int Forwarding;
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetIPv4GlobalStatistics")]
-        public static unsafe extern int GetIPv4GlobalStatistics(IPv4GlobalStatistics* statistics);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetIPv4GlobalStatistics")]
+        public static unsafe partial int GetIPv4GlobalStatistics(IPv4GlobalStatistics* statistics);
 
         [StructLayoutAttribute(LayoutKind.Sequential)]
         public readonly struct UdpGlobalStatistics
@@ -68,8 +68,8 @@ public readonly struct UdpGlobalStatistics
             public readonly ulong UdpListeners;
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetUdpGlobalStatistics")]
-        public static unsafe extern int GetUdpGlobalStatistics(UdpGlobalStatistics* statistics);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetUdpGlobalStatistics")]
+        public static unsafe partial int GetUdpGlobalStatistics(UdpGlobalStatistics* statistics);
 
         [StructLayoutAttribute(LayoutKind.Sequential)]
         public readonly struct Icmpv4GlobalStatistics
@@ -98,8 +98,8 @@ public readonly struct Icmpv4GlobalStatistics
             public readonly ulong TimestampRequestsSent;
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetIcmpv4GlobalStatistics")]
-        public static unsafe extern int GetIcmpv4GlobalStatistics(Icmpv4GlobalStatistics* statistics);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetIcmpv4GlobalStatistics")]
+        public static unsafe partial int GetIcmpv4GlobalStatistics(Icmpv4GlobalStatistics* statistics);
 
         [StructLayoutAttribute(LayoutKind.Sequential)]
         public readonly struct Icmpv6GlobalStatistics
@@ -134,8 +134,8 @@ public readonly struct Icmpv6GlobalStatistics
             public readonly ulong TimeExceededMessagesSent;
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetIcmpv6GlobalStatistics")]
-        public static unsafe extern int GetIcmpv6GlobalStatistics(Icmpv6GlobalStatistics* statistics);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetIcmpv6GlobalStatistics")]
+        public static unsafe partial int GetIcmpv6GlobalStatistics(Icmpv6GlobalStatistics* statistics);
 
         public readonly struct NativeIPInterfaceStatistics
         {
@@ -158,7 +158,7 @@ public readonly struct NativeIPInterfaceStatistics
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetNativeIPInterfaceStatistics", CharSet = CharSet.Ansi)]
         public static partial int GetNativeIPInterfaceStatistics(string name, out NativeIPInterfaceStatistics stats);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetNumRoutes")]
-        public static extern int GetNumRoutes();
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetNumRoutes")]
+        public static partial int GetNumRoutes();
     }
 }
diff --git a/src/libraries/Common/src/Interop/BSD/System.Native/Interop.TcpConnectionInfo.cs b/src/libraries/Common/src/Interop/BSD/System.Native/Interop.TcpConnectionInfo.cs
index 3d48cd67060ae..35a6b9dd5b545 100644
--- a/src/libraries/Common/src/Interop/BSD/System.Native/Interop.TcpConnectionInfo.cs
+++ b/src/libraries/Common/src/Interop/BSD/System.Native/Interop.TcpConnectionInfo.cs
@@ -25,16 +25,16 @@ public struct NativeTcpConnectionInformation
             public TcpState State;
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetEstimatedTcpConnectionCount")]
-        public static extern int GetEstimatedTcpConnectionCount();
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetEstimatedTcpConnectionCount")]
+        public static partial int GetEstimatedTcpConnectionCount();
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetActiveTcpConnectionInfos")]
-        public static extern unsafe int GetActiveTcpConnectionInfos(NativeTcpConnectionInformation* infos, int* infoCount);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetActiveTcpConnectionInfos")]
+        public static unsafe partial int GetActiveTcpConnectionInfos(NativeTcpConnectionInformation* infos, int* infoCount);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetEstimatedUdpListenerCount")]
-        public static extern int GetEstimatedUdpListenerCount();
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetEstimatedUdpListenerCount")]
+        public static partial int GetEstimatedUdpListenerCount();
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetActiveUdpListeners")]
-        public static extern unsafe int GetActiveUdpListeners(IPEndPointInfo* infos, int* infoCount);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetActiveUdpListeners")]
+        public static unsafe partial int GetActiveUdpListeners(IPEndPointInfo* infos, int* infoCount);
     }
 }
diff --git a/src/libraries/Common/src/Interop/OSX/System.Security.Cryptography.Native.Apple/Interop.X509Chain.cs b/src/libraries/Common/src/Interop/OSX/System.Security.Cryptography.Native.Apple/Interop.X509Chain.cs
index 16525bfd370c8..e82ebf958787a 100644
--- a/src/libraries/Common/src/Interop/OSX/System.Security.Cryptography.Native.Apple/Interop.X509Chain.cs
+++ b/src/libraries/Common/src/Interop/OSX/System.Security.Cryptography.Native.Apple/Interop.X509Chain.cs
@@ -43,8 +43,8 @@ internal static partial int AppleCryptoNative_X509ChainEvaluate(
         [GeneratedDllImport(Libraries.AppleCryptoNative, EntryPoint = "AppleCryptoNative_X509ChainGetStatusAtIndex")]
         internal static partial int X509ChainGetStatusAtIndex(SafeCreateHandle trustResults, long index, out int pdwStatus);
 
-        [DllImport(Libraries.AppleCryptoNative, EntryPoint = "AppleCryptoNative_GetOSStatusForChainStatus")]
-        internal static extern int GetOSStatusForChainStatus(X509ChainStatusFlags flag);
+        [GeneratedDllImport(Libraries.AppleCryptoNative, EntryPoint = "AppleCryptoNative_GetOSStatusForChainStatus")]
+        internal static partial int GetOSStatusForChainStatus(X509ChainStatusFlags flag);
 
         [GeneratedDllImport(Libraries.AppleCryptoNative, EntryPoint = "AppleCryptoNative_X509ChainSetTrustAnchorCertificates")]
         internal static partial int X509ChainSetTrustAnchorCertificates(SafeX509ChainHandle chain, SafeCreateHandle anchorCertificates);
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.Disconnect.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.Disconnect.cs
index 0ecfc3192373d..55c79888f18b0 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.Disconnect.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.Disconnect.cs
@@ -8,7 +8,7 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Disconnect")]
-        internal static extern Error Disconnect(IntPtr socket);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Disconnect")]
+        internal static partial Error Disconnect(IntPtr socket);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.EnumerateInterfaceAddresses.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.EnumerateInterfaceAddresses.cs
index 2ad68069e48c0..b4896fc0a744f 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.EnumerateInterfaceAddresses.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.EnumerateInterfaceAddresses.cs
@@ -42,18 +42,18 @@ public unsafe struct NetworkInterfaceInfo
             private fixed byte __padding[3];
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_EnumerateInterfaceAddresses")]
-        public static extern unsafe int EnumerateInterfaceAddresses(
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_EnumerateInterfaceAddresses")]
+        public static unsafe partial int EnumerateInterfaceAddresses(
             void* context,
             delegate* unmanaged<void*, byte*, IpAddressInfo*, void> ipv4Found,
             delegate* unmanaged<void*, byte*, IpAddressInfo*, uint*, void> ipv6Found,
             delegate* unmanaged<void*, byte*, LinkLayerAddressInfo*, void> linkLayerFound);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_EnumerateGatewayAddressesForInterface")]
-        public static extern unsafe int EnumerateGatewayAddressesForInterface(void* context, uint interfaceIndex, delegate* unmanaged<void*, IpAddressInfo*, void> onGatewayFound);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_EnumerateGatewayAddressesForInterface")]
+        public static unsafe partial int EnumerateGatewayAddressesForInterface(void* context, uint interfaceIndex, delegate* unmanaged<void*, IpAddressInfo*, void> onGatewayFound);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetNetworkInterfaces")]
-        public static unsafe extern int GetNetworkInterfaces(int* count, NetworkInterfaceInfo** addrs, int* addressCount, IpAddressInfo** aa);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetNetworkInterfaces")]
+        public static unsafe partial int GetNetworkInterfaces(int* count, NetworkInterfaceInfo** addrs, int* addressCount, IpAddressInfo** aa);
 
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetDomainName.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetDomainName.cs
index 466afb7b0101d..74946795ca860 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetDomainName.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetDomainName.cs
@@ -10,8 +10,8 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetDomainName")]
-        private static extern unsafe int GetDomainName(byte* name, int len);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetDomainName")]
+        private static unsafe partial int GetDomainName(byte* name, int len);
 
         internal static unsafe string GetDomainName()
         {
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetDomainSocketSizes.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetDomainSocketSizes.cs
index 7daf1ba2aef34..35263979dc318 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetDomainSocketSizes.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetDomainSocketSizes.cs
@@ -8,8 +8,8 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetDomainSocketSizes")]
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetDomainSocketSizes")]
         [SuppressGCTransition]
-        internal static unsafe extern void GetDomainSocketSizes(int* pathOffset, int* pathSize, int* addressSize);
+        internal static unsafe partial void GetDomainSocketSizes(int* pathOffset, int* pathSize, int* addressSize);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetMaximumAddressSize.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetMaximumAddressSize.cs
index 44617551080a0..6ad3e4e3cd669 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetMaximumAddressSize.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetMaximumAddressSize.cs
@@ -8,8 +8,8 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetMaximumAddressSize")]
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetMaximumAddressSize")]
         [SuppressGCTransition]
-        internal static extern int GetMaximumAddressSize();
+        internal static partial int GetMaximumAddressSize();
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetSockOpt.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetSockOpt.cs
index 0a0dbae00073f..49d4b0d703e37 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetSockOpt.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.GetSockOpt.cs
@@ -12,8 +12,8 @@ internal static partial class Sys
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetSockOpt")]
         internal static unsafe partial Error GetSockOpt(SafeHandle socket, SocketOptionLevel optionLevel, SocketOptionName optionName, byte* optionValue, int* optionLen);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetSockOpt")]
-        internal static extern unsafe Error GetSockOpt(IntPtr socket, SocketOptionLevel optionLevel, SocketOptionName optionName, byte* optionValue, int* optionLen);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetSockOpt")]
+        internal static unsafe partial Error GetSockOpt(IntPtr socket, SocketOptionLevel optionLevel, SocketOptionName optionName, byte* optionValue, int* optionLen);
 
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetRawSockOpt")]
         internal static unsafe partial Error GetRawSockOpt(SafeHandle socket, int optionLevel, int optionName, byte* optionValue, int* optionLen);
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.IPPacketInformation.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.IPPacketInformation.cs
index 37dab53c69365..7c10ff98bf70c 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.IPPacketInformation.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.IPPacketInformation.cs
@@ -16,9 +16,9 @@ internal struct IPPacketInformation
             private int _padding;       // Pad out to 8-byte alignment
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetControlMessageBufferSize")]
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_GetControlMessageBufferSize")]
         [SuppressGCTransition]
-        internal static extern int GetControlMessageBufferSize(int isIPv4, int isIPv6);
+        internal static partial int GetControlMessageBufferSize(int isIPv4, int isIPv6);
 
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_TryGetIPPacketInformation")]
         internal static unsafe partial bool TryGetIPPacketInformation(MessageHeader* messageHeader, bool isIPv4, IPPacketInformation* packetInfo);
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.InterfaceNameToIndex.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.InterfaceNameToIndex.cs
index 74fab3ed6d6a2..7d0c0dd64c2a7 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.InterfaceNameToIndex.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.InterfaceNameToIndex.cs
@@ -8,7 +8,7 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_InterfaceNameToIndex", SetLastError = true)]
-        public static extern uint InterfaceNameToIndex(string name);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_InterfaceNameToIndex", CharSet = CharSet.Ansi, SetLastError = true)]
+        public static partial uint InterfaceNameToIndex(string name);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.LingerOption.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.LingerOption.cs
index 5092a15151dbb..ecaae2b40abb9 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.LingerOption.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.LingerOption.cs
@@ -21,7 +21,7 @@ internal struct LingerOption
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SetLingerOption")]
         internal static unsafe partial Error SetLingerOption(SafeHandle socket, LingerOption* option);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SetLingerOption")]
-        internal static extern unsafe Error SetLingerOption(IntPtr socket, LingerOption* option);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SetLingerOption")]
+        internal static unsafe partial Error SetLingerOption(IntPtr socket, LingerOption* option);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.MapTcpState.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.MapTcpState.cs
index d16be7edf49a5..3d689c57f387e 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.MapTcpState.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.MapTcpState.cs
@@ -8,8 +8,8 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_MapTcpState")]
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_MapTcpState")]
         [SuppressGCTransition]
-        internal static extern TcpState MapTcpState(int nativeState);
+        internal static partial TcpState MapTcpState(int nativeState);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.NetworkChange.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.NetworkChange.cs
index 152588f507885..5b5e7ccd8bba3 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.NetworkChange.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.NetworkChange.cs
@@ -16,13 +16,13 @@ public enum NetworkChangeKind
             AvailabilityChanged = 2
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CreateNetworkChangeListenerSocket")]
-        public static unsafe extern Error CreateNetworkChangeListenerSocket(int* socket);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CreateNetworkChangeListenerSocket")]
+        public static unsafe partial Error CreateNetworkChangeListenerSocket(int* socket);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CloseNetworkChangeListenerSocket")]
-        public static extern Error CloseNetworkChangeListenerSocket(int socket);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CloseNetworkChangeListenerSocket")]
+        public static partial Error CloseNetworkChangeListenerSocket(int socket);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_ReadEvents")]
-        public static extern unsafe void ReadEvents(int socket, delegate* unmanaged<int, NetworkChangeKind, void> onNetworkChange);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_ReadEvents")]
+        public static unsafe partial void ReadEvents(int socket, delegate* unmanaged<int, NetworkChangeKind, void> onNetworkChange);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.PlatformSocketSupport.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.PlatformSocketSupport.cs
index 0e406162f9ac5..550aaff995add 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.PlatformSocketSupport.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.PlatformSocketSupport.cs
@@ -7,8 +7,8 @@ internal static partial class Interop
 {
     internal static partial class Sys
     {
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_PlatformSupportsDualModeIPv4PacketInfo")]
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_PlatformSupportsDualModeIPv4PacketInfo")]
         [SuppressGCTransition]
-        internal static extern int PlatformSupportsDualModeIPv4PacketInfo();
+        internal static partial int PlatformSupportsDualModeIPv4PacketInfo();
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.SetSockOpt.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.SetSockOpt.cs
index 10760287e439e..66048b39bacf4 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.SetSockOpt.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.SetSockOpt.cs
@@ -12,8 +12,8 @@ internal static partial class Sys
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SetSockOpt")]
         internal static unsafe partial Error SetSockOpt(SafeHandle socket, SocketOptionLevel optionLevel, SocketOptionName optionName, byte* optionValue, int optionLen);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SetSockOpt")]
-        internal static extern unsafe Error SetSockOpt(IntPtr socket, SocketOptionLevel optionLevel, SocketOptionName optionName, byte* optionValue, int optionLen);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SetSockOpt")]
+        internal static unsafe partial Error SetSockOpt(IntPtr socket, SocketOptionLevel optionLevel, SocketOptionName optionName, byte* optionValue, int optionLen);
 
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_SetRawSockOpt")]
         internal static unsafe partial Error SetRawSockOpt(SafeHandle socket, int optionLevel, int optionName, byte* optionValue, int optionLen);
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.Shutdown.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.Shutdown.cs
index ee516a59c2e86..6a04ca805a286 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.Shutdown.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.Shutdown.cs
@@ -12,7 +12,7 @@ internal static partial class Sys
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Shutdown")]
         internal static partial Error Shutdown(SafeHandle socket, SocketShutdown how);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Shutdown")]
-        internal static extern Error Shutdown(IntPtr socket, SocketShutdown how);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_Shutdown")]
+        internal static partial Error Shutdown(IntPtr socket, SocketShutdown how);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.SocketEvent.cs b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.SocketEvent.cs
index c3e6769ac6cdd..45eb91559c0ab 100644
--- a/src/libraries/Common/src/Interop/Unix/System.Native/Interop.SocketEvent.cs
+++ b/src/libraries/Common/src/Interop/Unix/System.Native/Interop.SocketEvent.cs
@@ -27,25 +27,25 @@ internal struct SocketEvent
             private int _padding;
         }
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CreateSocketEventPort")]
-        internal static unsafe extern Error CreateSocketEventPort(IntPtr* port);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CreateSocketEventPort")]
+        internal static unsafe partial Error CreateSocketEventPort(IntPtr* port);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CloseSocketEventPort")]
-        internal static extern Error CloseSocketEventPort(IntPtr port);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CloseSocketEventPort")]
+        internal static partial Error CloseSocketEventPort(IntPtr port);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CreateSocketEventBuffer")]
-        internal static unsafe extern Error CreateSocketEventBuffer(int count, SocketEvent** buffer);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_CreateSocketEventBuffer")]
+        internal static unsafe partial Error CreateSocketEventBuffer(int count, SocketEvent** buffer);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_FreeSocketEventBuffer")]
-        internal static extern unsafe Error FreeSocketEventBuffer(SocketEvent* buffer);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_FreeSocketEventBuffer")]
+        internal static unsafe partial Error FreeSocketEventBuffer(SocketEvent* buffer);
 
         [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_TryChangeSocketEventRegistration")]
         internal static partial Error TryChangeSocketEventRegistration(IntPtr port, SafeHandle socket, SocketEvents currentEvents, SocketEvents newEvents, IntPtr data);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_TryChangeSocketEventRegistration")]
-        internal static extern Error TryChangeSocketEventRegistration(IntPtr port, IntPtr socket, SocketEvents currentEvents, SocketEvents newEvents, IntPtr data);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_TryChangeSocketEventRegistration")]
+        internal static partial Error TryChangeSocketEventRegistration(IntPtr port, IntPtr socket, SocketEvents currentEvents, SocketEvents newEvents, IntPtr data);
 
-        [DllImport(Libraries.SystemNative, EntryPoint = "SystemNative_WaitForSocketEvents")]
-        internal static extern unsafe Error WaitForSocketEvents(IntPtr port, SocketEvent* buffer, int* count);
+        [GeneratedDllImport(Libraries.SystemNative, EntryPoint = "SystemNative_WaitForSocketEvents")]
+        internal static unsafe partial Error WaitForSocketEvents(IntPtr port, SocketEvent* buffer, int* count);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Windows/Advapi32/Interop.LsaLookupNames2.cs b/src/libraries/Common/src/Interop/Windows/Advapi32/Interop.LsaLookupNames2.cs
index 5b9092c7f8889..1e4c0309a09d9 100644
--- a/src/libraries/Common/src/Interop/Windows/Advapi32/Interop.LsaLookupNames2.cs
+++ b/src/libraries/Common/src/Interop/Windows/Advapi32/Interop.LsaLookupNames2.cs
@@ -9,7 +9,9 @@ internal static partial class Interop
 {
     internal static partial class Advapi32
     {
-        [DllImport(Interop.Libraries.Advapi32, EntryPoint = "LsaLookupNames2", SetLastError = true, CharSet = CharSet.Unicode)]
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
+        [DllImport(Interop.Libraries.Advapi32, EntryPoint = "LsaLookupNames2", CharSet = CharSet.Unicode, SetLastError = true)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable structs.
         internal static extern uint LsaLookupNames2(
             SafeLsaPolicyHandle handle,
             int flags,
@@ -18,6 +20,7 @@ internal static extern uint LsaLookupNames2(
             out SafeLsaMemoryHandle referencedDomains,
             out SafeLsaMemoryHandle sids
         );
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
 
         [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
         internal struct MARSHALLED_UNICODE_STRING
diff --git a/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.GetNetworkParams.cs b/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.GetNetworkParams.cs
index f731ce50e7a38..0e88f19ab0113 100644
--- a/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.GetNetworkParams.cs
+++ b/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.GetNetworkParams.cs
@@ -8,7 +8,7 @@ internal static partial class Interop
 {
     internal static partial class IpHlpApi
     {
-        [DllImport(Interop.Libraries.IpHlpApi, ExactSpelling = true)]
-        internal static unsafe extern uint GetNetworkParams(IntPtr pFixedInfo, uint* pOutBufLen);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi, ExactSpelling = true)]
+        internal static unsafe partial uint GetNetworkParams(IntPtr pFixedInfo, uint* pOutBufLen);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.NetworkInformation.cs b/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.NetworkInformation.cs
index 40d3df8e16079..b3c412c4b8cbf 100644
--- a/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.NetworkInformation.cs
+++ b/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.NetworkInformation.cs
@@ -508,34 +508,40 @@ internal unsafe struct MibUdp6RowOwnerPid
             internal ReadOnlySpan<byte> localAddrAsSpan => MemoryMarshal.CreateSpan(ref localAddr[0], 16);
         }
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static unsafe extern uint GetAdaptersAddresses(
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static unsafe partial uint GetAdaptersAddresses(
             AddressFamily family,
             uint flags,
             IntPtr pReserved,
             IntPtr adapterAddresses,
             uint* outBufLen);
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static unsafe extern uint GetBestInterfaceEx(byte* ipAddress, int* index);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static unsafe partial uint GetBestInterfaceEx(byte* ipAddress, int* index);
 
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Interop.Libraries.IpHlpApi)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable types.
         internal static extern uint GetIfEntry2(ref MibIfRow2 pIfRow);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static unsafe extern uint GetIpStatisticsEx(MibIpStats* statistics, AddressFamily family);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static unsafe partial uint GetIpStatisticsEx(MibIpStats* statistics, AddressFamily family);
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static unsafe extern uint GetTcpStatisticsEx(MibTcpStats* statistics, AddressFamily family);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static unsafe partial uint GetTcpStatisticsEx(MibTcpStats* statistics, AddressFamily family);
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static unsafe extern uint GetUdpStatisticsEx(MibUdpStats* statistics, AddressFamily family);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static unsafe partial uint GetUdpStatisticsEx(MibUdpStats* statistics, AddressFamily family);
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static unsafe extern uint GetIcmpStatistics(MibIcmpInfo* statistics);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static unsafe partial uint GetIcmpStatistics(MibIcmpInfo* statistics);
 
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Interop.Libraries.IpHlpApi)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable types.
         internal static extern uint GetIcmpStatisticsEx(out MibIcmpInfoEx statistics, AddressFamily family);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
 
         [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
         internal static unsafe partial uint GetTcpTable(IntPtr pTcpTable, uint* dwOutBufLen, bool order);
@@ -551,14 +557,14 @@ internal static unsafe partial uint GetExtendedTcpTable(IntPtr pTcpTable, uint*
         internal static unsafe partial uint GetExtendedUdpTable(IntPtr pUdpTable, uint* dwOutBufLen, bool order,
                                                         uint IPVersion, UdpTableClass tableClass, uint reserved);
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static unsafe extern uint GetPerAdapterInfo(uint IfIndex, IntPtr pPerAdapterInfo, uint* pOutBufLen);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static unsafe partial uint GetPerAdapterInfo(uint IfIndex, IntPtr pPerAdapterInfo, uint* pOutBufLen);
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static extern void FreeMibTable(IntPtr handle);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static partial void FreeMibTable(IntPtr handle);
 
-        [DllImport(Interop.Libraries.IpHlpApi)]
-        internal static extern uint CancelMibChangeNotify2(IntPtr notificationHandle);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
+        internal static partial uint CancelMibChangeNotify2(IntPtr notificationHandle);
 
         [GeneratedDllImport(Interop.Libraries.IpHlpApi)]
         internal static unsafe partial uint NotifyStableUnicastIpAddressTable(
diff --git a/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.if_nametoindex.cs b/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.if_nametoindex.cs
index d544a94747f51..01235ca5f7340 100644
--- a/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.if_nametoindex.cs
+++ b/src/libraries/Common/src/Interop/Windows/IpHlpApi/Interop.if_nametoindex.cs
@@ -8,7 +8,7 @@ internal static partial class Interop
 {
     internal static partial class IpHlpApi
     {
-        [DllImport(Interop.Libraries.IpHlpApi, SetLastError = true)]
-        internal static extern uint if_nametoindex(string name);
+        [GeneratedDllImport(Interop.Libraries.IpHlpApi, CharSet = CharSet.Ansi, SetLastError = true)]
+        internal static partial uint if_nametoindex(string name);
     }
 }
diff --git a/src/libraries/Common/src/Interop/Windows/SspiCli/Interop.LsaLogonUser.cs b/src/libraries/Common/src/Interop/Windows/SspiCli/Interop.LsaLogonUser.cs
index 82aaec9af71fe..6be3ad7e6dd8e 100644
--- a/src/libraries/Common/src/Interop/Windows/SspiCli/Interop.LsaLogonUser.cs
+++ b/src/libraries/Common/src/Interop/Windows/SspiCli/Interop.LsaLogonUser.cs
@@ -10,7 +10,9 @@ internal static partial class Interop
 {
     internal static partial class SspiCli
     {
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Libraries.SspiCli)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable structs.
         internal static extern int LsaLogonUser(
             [In]  SafeLsaHandle LsaHandle,
             [In]  ref Advapi32.LSA_STRING OriginName,
@@ -27,5 +29,6 @@ internal static extern int LsaLogonUser(
             [Out] out QUOTA_LIMITS Quotas,
             [Out] out int SubStatus
             );
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
     }
 }
diff --git a/src/libraries/Common/src/Interop/Windows/SspiCli/Interop.SSPI.cs b/src/libraries/Common/src/Interop/Windows/SspiCli/Interop.SSPI.cs
index f555727442ae7..84e30b45ef9ae 100644
--- a/src/libraries/Common/src/Interop/Windows/SspiCli/Interop.SSPI.cs
+++ b/src/libraries/Common/src/Interop/Windows/SspiCli/Interop.SSPI.cs
@@ -344,10 +344,13 @@ internal static unsafe partial int DecryptMessage(
             uint sequenceNumber,
             uint* qualityOfProtection);
 
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Interop.Libraries.SspiCli, ExactSpelling = true, SetLastError = true)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable structs.
         internal static extern int QuerySecurityContextToken(
             ref CredHandle phContext,
             out SecurityContextTokenHandle handle);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
 
         [GeneratedDllImport(Interop.Libraries.SspiCli, ExactSpelling = true, SetLastError = true)]
         internal static partial int FreeContextBuffer(
@@ -476,13 +479,13 @@ internal static partial SECURITY_STATUS SspiEncodeStringsAsAuthIdentity(
             out SafeSspiAuthDataHandle authData);
 
 #pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
-        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we annotate blittable types used in interop in CoreLib (like Guid)
         [DllImport(Interop.Libraries.SspiCli, CharSet = CharSet.Unicode, ExactSpelling = true, SetLastError = true)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable structs.
         internal static extern SECURITY_STATUS SetCredentialsAttributesW(
             in CredHandle handlePtr,
             long ulAttribute,
             in SecPkgCred_ClientCertPolicy pBuffer,
             long cbBuffer);
-#pragma warning restore DLLIMPORTGENANALYZER015
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
     }
 }
diff --git a/src/libraries/Common/src/Interop/Windows/WebSocket/Interop.WebSocketBeginClientHandshake.cs b/src/libraries/Common/src/Interop/Windows/WebSocket/Interop.WebSocketBeginClientHandshake.cs
index 5d49f4d7eab7b..554d62ab1601a 100644
--- a/src/libraries/Common/src/Interop/Windows/WebSocket/Interop.WebSocketBeginClientHandshake.cs
+++ b/src/libraries/Common/src/Interop/Windows/WebSocket/Interop.WebSocketBeginClientHandshake.cs
@@ -3,13 +3,14 @@
 
 using System;
 using System.Runtime.InteropServices;
-using System.Security;
 
 internal static partial class Interop
 {
     internal static partial class WebSocket
     {
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Libraries.WebSocket)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable structs.
         internal static extern int WebSocketBeginClientHandshake(
             [In] SafeHandle webSocketHandle,
             [In] IntPtr subProtocols,
@@ -20,5 +21,6 @@ internal static extern int WebSocketBeginClientHandshake(
             [In] uint initialHeaderCount,
             [Out] out IntPtr additionalHeadersPtr,
             [Out] out uint additionalHeaderCount);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
     }
 }
diff --git a/src/libraries/Common/src/Interop/Windows/WebSocket/Interop.WebSocketBeginServerHandshake.cs b/src/libraries/Common/src/Interop/Windows/WebSocket/Interop.WebSocketBeginServerHandshake.cs
index 019a75a7c671e..68c10a704cb74 100644
--- a/src/libraries/Common/src/Interop/Windows/WebSocket/Interop.WebSocketBeginServerHandshake.cs
+++ b/src/libraries/Common/src/Interop/Windows/WebSocket/Interop.WebSocketBeginServerHandshake.cs
@@ -3,13 +3,14 @@
 
 using System;
 using System.Runtime.InteropServices;
-using System.Security;
 
 internal static partial class Interop
 {
     internal static partial class WebSocket
     {
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Libraries.WebSocket)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable structs.
         internal static extern int WebSocketBeginServerHandshake(
             [In] SafeHandle webSocketHandle,
             [In] IntPtr subProtocol,
@@ -19,5 +20,6 @@ internal static extern int WebSocketBeginServerHandshake(
             [In] uint requestHeaderCount,
             [Out] out IntPtr responseHeadersPtr,
             [Out] out uint responseHeaderCount);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
     }
 }
diff --git a/src/libraries/Common/src/Interop/Windows/WinHttp/Interop.winhttp.cs b/src/libraries/Common/src/Interop/Windows/WinHttp/Interop.winhttp.cs
index 85ca830e06f18..ccd5084c43018 100644
--- a/src/libraries/Common/src/Interop/Windows/WinHttp/Interop.winhttp.cs
+++ b/src/libraries/Common/src/Interop/Windows/WinHttp/Interop.winhttp.cs
@@ -187,12 +187,15 @@ public static partial bool WinHttpSetTimeouts(
         public static partial bool WinHttpGetIEProxyConfigForCurrentUser(
             out WINHTTP_CURRENT_USER_IE_PROXY_CONFIG proxyConfig);
 
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = true)]
-        [return: MarshalAs(UnmanagedType.Bool)]
-        public static extern bool WinHttpGetProxyForUrl(
-            SafeWinHttpHandle? sessionHandle, string url,
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittable structs.
+        [return: MarshalAs(UnmanagedType.Bool)]public static extern bool WinHttpGetProxyForUrl(
+            SafeWinHttpHandle? sessionHandle,
+            string url,
             ref WINHTTP_AUTOPROXY_OPTIONS autoProxyOptions,
             out WINHTTP_PROXY_INFO proxyInfo);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
 
         [GeneratedDllImport(Interop.Libraries.WinHttp, CharSet = CharSet.Unicode, SetLastError = true)]
         public static partial IntPtr WinHttpSetStatusCallback(
diff --git a/src/libraries/Common/src/Interop/Windows/WinSock/Interop.WSAIoctl.cs b/src/libraries/Common/src/Interop/Windows/WinSock/Interop.WSAIoctl.cs
index 37265789dc827..2508a98bc2f9d 100644
--- a/src/libraries/Common/src/Interop/Windows/WinSock/Interop.WSAIoctl.cs
+++ b/src/libraries/Common/src/Interop/Windows/WinSock/Interop.WSAIoctl.cs
@@ -9,8 +9,10 @@ internal static partial class Interop
 {
     internal static partial class Winsock
     {
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         // Used with SIOGETEXTENSIONFUNCTIONPOINTER - we're assuming that will never block.
         [DllImport(Interop.Libraries.Ws2_32, SetLastError = true)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we annotate blittable types used in interop in CoreLib (like Guid)
         internal static extern SocketError WSAIoctl(
             SafeSocketHandle socketHandle,
             [In] int ioControlCode,
@@ -21,6 +23,7 @@ internal static extern SocketError WSAIoctl(
             [Out] out int bytesTransferred,
             [In] IntPtr shouldBeNull,
             [In] IntPtr shouldBeNull2);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
 
         [GeneratedDllImport(Interop.Libraries.Ws2_32, EntryPoint = "WSAIoctl", SetLastError = true)]
         internal static partial SocketError WSAIoctl_Blocking(
diff --git a/src/libraries/Common/src/Interop/Windows/WinSock/Interop.getsockopt.cs b/src/libraries/Common/src/Interop/Windows/WinSock/Interop.getsockopt.cs
index bdfd0e49be9f0..047d46b484e89 100644
--- a/src/libraries/Common/src/Interop/Windows/WinSock/Interop.getsockopt.cs
+++ b/src/libraries/Common/src/Interop/Windows/WinSock/Interop.getsockopt.cs
@@ -32,12 +32,15 @@ internal static partial SocketError getsockopt(
             out IPMulticastRequest optionValue,
             ref int optionLength);
 
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Interop.Libraries.Ws2_32, SetLastError = true)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittale structs.
         internal static extern SocketError getsockopt(
             [In] SafeSocketHandle socketHandle,
             [In] SocketOptionLevel optionLevel,
             [In] SocketOptionName optionName,
             [Out] out IPv6MulticastRequest optionValue,
             [In, Out] ref int optionLength);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
     }
 }
diff --git a/src/libraries/Common/src/Interop/Windows/WinSock/Interop.setsockopt.cs b/src/libraries/Common/src/Interop/Windows/WinSock/Interop.setsockopt.cs
index 98a9a3d4f3295..2aeb51a0c4d21 100644
--- a/src/libraries/Common/src/Interop/Windows/WinSock/Interop.setsockopt.cs
+++ b/src/libraries/Common/src/Interop/Windows/WinSock/Interop.setsockopt.cs
@@ -57,12 +57,15 @@ internal static partial SocketError setsockopt(
             ref IPMulticastRequest mreq,
             int optionLength);
 
+#pragma warning disable DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
         [DllImport(Interop.Libraries.Ws2_32, SetLastError = true)]
+        // TODO: [DllImportGenerator] Switch to use GeneratedDllImport once we support non-blittale structs.
         internal static extern SocketError setsockopt(
             [In] SafeSocketHandle socketHandle,
             [In] SocketOptionLevel optionLevel,
             [In] SocketOptionName optionName,
             [In] ref IPv6MulticastRequest mreq,
             [In] int optionLength);
+#pragma warning restore DLLIMPORTGENANALYZER015 // Use 'GeneratedDllImportAttribute' instead of 'DllImportAttribute' to generate P/Invoke marshalling code at compile time
     }
 }