Update if.h to match Linux kernel headers?

[Carlos O'Donell]

Florian,

Should we be updating if.h to match linux/if.h?

I'm not entirely sure if userspace can make use of these flags, but one
could conceivably write userspace tools and drivers that would.

We don't have a Linux-specific header for this, but I don't think it
matters. Linux ends up being the defacto place where these value are
being defined and then used in other OSs.

Thoughts?

diff --git a/sysdeps/gnu/net/if.h b/sysdeps/gnu/net/if.h
index bbc2094..c56dcac 100644
--- a/sysdeps/gnu/net/if.h
+++ b/sysdeps/gnu/net/if.h
@@ -78,6 +78,12 @@ enum
 # define IFF_AUTOMEDIA IFF_AUTOMEDIA
     IFF_DYNAMIC = 0x8000       /* Dialup device with changing addresses.  */
 # define IFF_DYNAMIC   IFF_DYNAMIC
+    IFF_LOWER_UP = 0x10000     /* Network interface carrier on.  */
+# define IFF_LOWER_UP  IFF_LOWER_UP
+    IFF_DORMANT = 0x20000      /* Network interface dormant.  */
+# define IFF_DORMANT   IFF_DORMANT
+    IFF_ECHO = 0x40000         /* Do not locally echo sent frames.  */
+# define IFF_ECHO      IFF_ECHO
   };
 
 /* The ifaddr structure contains information about one address of an
---

-- 
Cheers,
Carlos.