sk_buff extraction problem

[will fitzgerald]

hi all,

i'm having trouble extracting a packets source and destination 
address from the sk_buff. i want to be able to see if a packet does 
in fact pass through my router.

for no particular reason i choose dev.c and a function called 
netif_rx to do this.

at the beginning of netif_rx() i added the lines:
int this_cpu = smp_processor_id();
........
        char *p;
        int i;
        
                 //  p=   (char *) (skb->mac.ethernet);
                    p=   (char *) (skb->h.uh);

then just before return softnet_data[this_cpu].cng_level;
i added this:

for( i=0; i<8;i++){
            printk(KERN_DEBUG"netif_rx() ->ethernet: %02x ",*(p+i));
            }

it complies but as soon as i pass a packet through it the router 
freezes up.

am i even on the rigth track?

regards will.			

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