add missing (common) iff constants

src/unix/notbsd/mod.rs

@@ -417,7 +417,22 @@ pub const MADV_MERGEABLE: ::c_int = 12;
 pub const MADV_UNMERGEABLE: ::c_int = 13;
 pub const MADV_HWPOISON: ::c_int = 100;
 
+pub const IFF_UP: ::c_int = 0x1;
+pub const IFF_BROADCAST: ::c_int = 0x2;
+pub const IFF_DEBUG: ::c_int = 0x4;
 pub const IFF_LOOPBACK: ::c_int = 0x8;
+pub const IFF_POINTOPOINT: ::c_int = 0x10;
+pub const IFF_NOTRAILERS: ::c_int = 0x20;
+pub const IFF_RUNNING: ::c_int = 0x40;
+pub const IFF_NOARP: ::c_int = 0x80;
+pub const IFF_PROMISC: ::c_int = 0x100;
+pub const IFF_ALLMULTI: ::c_int = 0x200;
+pub const IFF_MASTER: ::c_int = 0x400;
+pub const IFF_SLAVE: ::c_int = 0x800;
+pub const IFF_MULTICAST: ::c_int = 0x1000;
+pub const IFF_PORTSEL: ::c_int = 0x2000;
+pub const IFF_AUTOMEDIA: ::c_int = 0x4000;
+pub const IFF_DYNAMIC: ::c_int = 0x8000;
 
 pub const AF_UNIX: ::c_int = 1;
 pub const AF_INET: ::c_int = 2;