Adapt to the libc change for IFF_OACTIVE and IFF_RUNNING for FreeBSD.

Author: mwanner

src/net/if_.rs

@@ -67,6 +67,7 @@ libc_bitflags!(
         /// [`netdevice(7)`](http://man7.org/linux/man-pages/man7/netdevice.7.html))
         #[cfg(any(target_os = "android",
                   target_os = "dragonfly",
+                  target_os = "freebsd",
                   target_os = "fuchsia",
                   target_os = "ios",
                   target_os = "linux",
@@ -75,9 +76,6 @@ libc_bitflags!(
                   target_os = "openbsd",
                   target_os = "solaris"))]
         IFF_RUNNING;
-        /// Resources allocated.
-        #[cfg(any(target_os = "freebsd"))]
-        IFF_DRV_RUNNING;
 
         // bitmask: 0x80
         /// No arp protocol, L2 destination address not set. (see
@@ -99,11 +97,9 @@ libc_bitflags!(
         /// [`netdevice(7)`](http://man7.org/linux/man-pages/man7/netdevice.7.html))
         #[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))]
         IFF_MASTER;
-        /// tx hardware queue is full
-        #[cfg(target_os = "freebsd")]
-        IFF_DRV_OACTIVE;
-        /// transmission in progress
-        #[cfg(any(target_os = "macos",
+        /// transmission in progress, tx hardware queue is full
+        #[cfg(any(target_os = "freebsd",
+                  target_os = "macos",
                   target_os = "netbsd",
                   target_os = "openbsd",
                   target_os = "ios"))]