int ipv6_route_ioctl(unsigned int cmd, void *arg)
{
struct in6_rtmsg rtmsg;
int err;
switch(cmd) {
case SIOCADDRT: /* Add a route */
case SIOCDELRT: /* Delete a route */
if (!capable(CAP_NET_ADMIN))
return -EPERM;
err = copy_from_user(&rtmsg, arg,
sizeof(struct in6_rtmsg));
if (err)
return -EFAULT;
rtnl_lock();
switch (cmd) {
case SIOCADDRT:
err = ip6_route_add(&rtmsg, NULL);
break;
case SIOCDELRT:
err = ip6_route_del(&rtmsg, NULL);
break;
default:
err = -EINVAL;
}
rtnl_unlock();
return err;
};
return -EINVAL;
}
int ip6_fw_msg_add(struct ip6_fw_msg *msg)
{
struct in6_rtmsg rtmsg;
struct ip6_fw_rule *rl;
struct rt6_info *rt;
int err;
ipv6_addr_copy(&rtmsg.rtmsg_dst, &msg->dst);
ipv6_addr_copy(&rtmsg.rtmsg_src, &msg->src);
rtmsg.rtmsg_dst_len = msg->dst_len;
rtmsg.rtmsg_src_len = msg->src_len;
rtmsg.rtmsg_metric = IP6_RT_PRIO_FW;
rl = ip6_fwrule_alloc();
if (rl == NULL)
return -ENOMEM;
rl->policy = msg->policy;
rl->info.proto = msg->proto;
rl->info.uli_u.data = msg->u.data;
rtmsg.rtmsg_flags = RTF_NONEXTHOP|RTF_POLICY;
err = ip6_route_add(&rtmsg);
if (err) {
ip6_fwrule_free(rl);
return err;
}
/* The rest will not work for now. --ABK (989725) */
#ifndef notdef
ip6_fwrule_free(rl);
return -EPERM;
#else
rt->u.dst.error = -EPERM;
if (msg->policy == IP6_FW_ACCEPT) {
/*
* Accept rules are never selected
* (i.e. packets use normal forwarding)
*/
rt->u.dst.input = ip6_fw_discard;
rt->u.dst.output = ip6_fw_discard;
} else {
rt->u.dst.input = ip6_fw_reject;
rt->u.dst.output = ip6_fw_reject;
}
ip6_rule_add(rl);
rt->rt6i_flowr = flow_clone((struct flow_rule *)rl);
return 0;
#endif
}
static void addrconf_add_mroute(struct net_device *dev)
{
struct in6_rtmsg rtmsg;
memset(&rtmsg, 0, sizeof(rtmsg));
ipv6_addr_set(&rtmsg.rtmsg_dst,
__constant_htonl(0xFF000000), 0, 0, 0);
rtmsg.rtmsg_dst_len = 8;
rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
rtmsg.rtmsg_ifindex = dev->ifindex;
rtmsg.rtmsg_flags = RTF_UP|RTF_ADDRCONF;
rtmsg.rtmsg_type = RTMSG_NEWROUTE;
ip6_route_add(&rtmsg);
}
struct rt6_info *rt6_add_dflt_router(struct in6_addr *gwaddr,
struct net_device *dev)
{
struct in6_rtmsg rtmsg;
memset(&rtmsg, 0, sizeof(struct in6_rtmsg));
rtmsg.rtmsg_type = RTMSG_NEWROUTE;
ipv6_addr_copy(&rtmsg.rtmsg_gateway, gwaddr);
rtmsg.rtmsg_metric = 1024;
rtmsg.rtmsg_flags = RTF_GATEWAY | RTF_ADDRCONF | RTF_DEFAULT | RTF_UP;
rtmsg.rtmsg_ifindex = dev->ifindex;
ip6_route_add(&rtmsg, NULL);
return rt6_get_dflt_router(gwaddr, dev);
}
static void sit_route_add(struct net_device *dev)
{
struct in6_rtmsg rtmsg;
memset(&rtmsg, 0, sizeof(rtmsg));
rtmsg.rtmsg_type = RTMSG_NEWROUTE;
rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
/* prefix length - 96 bytes "::d.d.d.d" */
rtmsg.rtmsg_dst_len = 96;
rtmsg.rtmsg_flags = RTF_UP|RTF_NONEXTHOP;
rtmsg.rtmsg_ifindex = dev->ifindex;
ip6_route_add(&rtmsg);
}
static void
addrconf_prefix_route(struct in6_addr *pfx, int plen, struct net_device *dev,
unsigned long expires, unsigned flags)
{
struct in6_rtmsg rtmsg;
memset(&rtmsg, 0, sizeof(rtmsg));
memcpy(&rtmsg.rtmsg_dst, pfx, sizeof(struct in6_addr));
rtmsg.rtmsg_dst_len = plen;
rtmsg.rtmsg_metric = IP6_RT_PRIO_ADDRCONF;
rtmsg.rtmsg_ifindex = dev->ifindex;
rtmsg.rtmsg_info = expires;
rtmsg.rtmsg_flags = RTF_UP|flags;
rtmsg.rtmsg_type = RTMSG_NEWROUTE;
/* Prevent useless cloning on PtP SIT.
This thing is done here expecting that the whole
class of non-broadcast devices need not cloning.
*/
if (dev->type == ARPHRD_SIT && (dev->flags&IFF_POINTOPOINT))
rtmsg.rtmsg_flags |= RTF_NONEXTHOP;
ip6_route_add(&rtmsg);
}
