ip_process_ioctl
extern void ip_process_ioctl(ipsq_t *, queue_t *, mblk_t *, void *);
ipsq = ipsq_try_enter(ci.ci_ipif, NULL, q, mp, ip_process_ioctl,
ip_process_ioctl(NULL, q, mp, ipip);
ipsq = ipsq_try_enter(NULL, usesrc_ill, q, mp, ip_process_ioctl,
isv6, zoneid, q, mp, ip_process_ioctl, &err, ipst);
ipsq = ipsq_try_enter(NULL, ill, q, mp, ip_process_ioctl, NEW_OP,