net: ipv6 support, merge unix+ip;[pack:x] attribute (#9904)

vlib/net/afunix.h

@@ -0,0 +1,26 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+
+#ifndef _AFUNIX_
+#define _AFUNIX_
+
+#define UNIX_PATH_MAX 108
+
+#if !defined(ADDRESS_FAMILY)
+#define UNDEF_ADDRESS_FAMILY
+#define ADDRESS_FAMILY unsigned short
+#endif
+
+typedef struct sockaddr_un {
+  ADDRESS_FAMILY sun_family;
+  char sun_path[UNIX_PATH_MAX];
+} SOCKADDR_UN, *PSOCKADDR_UN;
+
+#if defined(UNDEF_ADDRESS_FAMILY)
+#undef ADDRESS_FAMILY
+#endif
+
+#endif /* _AFUNIX_ */