Hi, I have the following question: How can I delete a packet that I
received with a dev_add_pack, inside the subroutine that processes the
sk_buffs I have tryed a kfree_skb and nothing happens, the previous and
next pointers of the sk_buff point to 0, I have also tryed
skb_unlink... The code I am trying is.
int init_module(void) {
pt.type=htons(ETH_P_ALL);
pt.dev=NULL;
pt.func=icmp_bd;
dev_add_pack(&pt);
printk("sk_buff handler registrado...\n");
return 0;
}
And the code for the icmp_bd function which is supossed to delete the
sk_buff is:
int icmp_bd(struct sk_buff *skb, struct device *d,struct packet_type *pt) {
/* Ajustamos los punteros... */
skb->h.raw=skb->nh.raw+skb->nh.iph->ihl*4;
if ((skb->nh.iph->protocol == IPPROTO_ICMP) ) {
kfree_skb(skb);
return 0;
}
}
What I am trying to do is that anybody else except me receives ICMP's, it
is a reallt simple example... but it dosent work.
Thanks.
e-Mail : mrafael@arrakis.es
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