>From what I understand, the following 2 lines of code should unlink and
dealloc an skb; causing the packet to never be sent (or received):
skb_unlink(skb);
dev_kfree_skb(skb);
Instead, when trying to drop outbound skb's, they get sent anyway. I've
already checked that skb->users drops to zero and should be deallocated when
dev_kfree_skb is called. I've also tried directly calling the
skb->destructor function and manually (and atomically) decrementing
skb->users.
Refer to the packet_handler below:
Regards,
Mazhar
static struct packet_type all_type;
static int pkt_handler(struct sk_buff *skb, struct net_device *dv, struct
packet_type *pt) {
switch(skb->pkt_type) {
case PACKET_OUTGOING:
printk("outgoing\n");
skb_unlink(skb);
dev_kfree_skb(skb);
goto destroy;
break;
default:
printk("incoming\n");
break;
}
pass:
dev_kfree_skb(skb);
destroy:
return 0;
}
...
int init_module(void)
{
all_type.type = htons(ETH_P_ALL);
all_type.func = pkt_handler;
dev_add_pack(&all_type);
return 0;
}
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This archive was generated by hypermail 2b29 : Sun Jul 07 2002 - 22:00:07 EST