Re: Modularizing ARP?

Bernd Eckenfels (ecki@lina.inka.de)
Thu, 09 Sep 1999 01:46:33 +0200

In article <Pine.GSO.3.95.990908135940.22108A-100000@ten10> you wrote:
> functions. What I was envisioning is having the "original" ARP code
> running, then insmod my updated module that would override the "original"
> ARP code.

You could use the arpd user mode solution. In recent kernels ARP is
implemented as a neighboring cache.

You can use dev_add_pack() in a module to receive arp requests (like
__initfunc does in arp.c)

---
static struct packet_type arp_packet_type =
{
        __constant_htons(ETH_P_ARP),
        NULL,           /* All devices */
        arp_rcv,
        NULL,
        NULL
};


__initfunc(void arp_init (void))
{
        neigh_table_init(&arp_tbl);
        dev_add_pack(&arp_packet_type);
...

---




Greetings
Bernd


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