Re: [mpls-linux-devel] mpls-linux on 64 bit kernel

[Chris R. <Chr...@nr...>]

Ashan

I'm currently trying to test this but having lock up problems.  However, 
I have cornered the problem to the following code snip.  Note the 
conditional compile statement.  This maybe the cause of the x86_64 
system locking up, but (and a big but) it also locks up with my x86_32 
systems as well.  Will be collecting more data tomorrow but if anyone 
has any ideas I'm all ears.  FYI, the lock up occurs when 
mpls_opcode_peek is called from mpls_skb_recv().

int mpls_opcode_peek(struct sk_buff *skb)
{
     u32 shim;

#define CAN_WE_ASSUME_32BIT_ALIGNED 0
#if CAN_WE_ASSUME_32BIT_ALIGNED
     shim = ntohl(*((u32*)&skb->network_header));
#else
     memcpy(&shim,skb->network_header,sizeof(u32));
     shim = ntohl(shim);
#endif

     if (!(MPLSCB(skb)->flag)) {
         MPLSCB(skb)->ttl  = shim & 0xFF;
         MPLSCB(skb)->flag = 1;
     }
     MPLSCB(skb)->bos   = (shim >> 8 ) & 0x1;
     MPLSCB(skb)->exp   = (shim >> 9 ) & 0x7;
     MPLSCB(skb)->label = (shim >> 12) & 0xFFFFF;

     return MPLS_RESULT_RECURSE;
}


On 05/17/2010 12:01 PM, Ahsan Tariq wrote:
> Hi,
>
> I just wanted to ask that if anybody has successfully tested MPLS 
> label switching on a 64 bit architecture, specifically x86_64 ?
>
> Thanks
>
> Ahsan
>
>
> ------------------------------------------------------------------------------
>
>    
>
>
> _______________________________________________
> mpls-linux-devel mailing list
> mpl...@li...
> https://lists.sourceforge.net/lists/listinfo/mpls-linux-devel
>