[Ns-bugs] [Bug 1080] Management frame from foreign AP can crash ns-3

[code@nsnam.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=1080

--- Comment #2 from Sergio <sertinell at gmail.com> 2011-03-26 05:47:42 EDT ---
I found this bug in Ns-3.10

(In reply to comment #0)
> This bug was reported by Sergio Martínez Tornell
> 
> http://mailman.isi.edu/pipermail/ns-developers/2011-March/008771.html
> 
> I think I have found a bug in ApWifiMac.
> 
> When an AP receive a Mgt packet from another AP, lets say a Beacon
> frame, it doesn't know how to handle it and drops this error:
> 
> NS_FATAL_ERROR ("Don't know how to handle frame (type=" <<
> hdr->GetType ()); //Type is five in case of MGT_BEACON
> 
> I have fixed it by this patch:
> 
> --- a/src/devices/wifi/ap-wifi-mac.cc   Wed Jan 05 21:00:01 2011 -0800
> +++ b/src/devices/wifi/ap-wifi-mac.cc   Thu Mar 24 20:29:46 2011 +0100
> @@ -530,6 +530,13 @@
>               return;
>             }
>         }
> +      else if( from != GetAddress() && hdr->GetAddr1 () != GetAddress () )
> +      {
> +         // this is an Mgt packet from another AP not for us
> +         // we can ignore it.
> +         NotifyRxDrop (packet);
> +         return;
> +      }
>     }

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