Is mac address reference safe w/ zero copy?

[Rusty Russell <rusty@xxxxxxxxxxxxxxxx>]

Hi Dave, et al,

        The following code in route.c:ip_route_input_slow()

                if (dev->hard_header_len) {
                        int i;
                        unsigned char *p = skb->mac.raw;
                        printk(KERN_WARNING "ll header: ");
                        for (i=0; i<dev->hard_header_len; i++, p++) {
                                printk("%02x", *p);

        Is this safe w/ paged skbs?  Can I assume this in the ipt_mac
mac-address-matching netfilter module (which can only be called on
incoming or forwarded packets)?

Rusty.
--
Premature optmztion is rt of all evl. --DK