.entry_size = sizeof(struct rt6_info),
};
+static void ip6_rt_blackhole_update_pmtu(struct dst_entry *dst, u32 mtu)
+{
+}
+
+static struct dst_ops ip6_dst_blackhole_ops = {
+ .family = AF_INET6,
+ .protocol = __constant_htons(ETH_P_IPV6),
+ .destroy = ip6_dst_destroy,
+ .check = ip6_dst_check,
+ .update_pmtu = ip6_rt_blackhole_update_pmtu,
+ .entry_size = sizeof(struct rt6_info),
+};
+
struct rt6_info ip6_null_entry = {
.u = {
.dst = {
static inline int rt6_check_dev(struct rt6_info *rt, int oif)
{
struct net_device *dev = rt->rt6i_dev;
- int ret = 0;
-
- if (!oif)
+ if (!oif || dev->ifindex == oif)
return 2;
- if (dev->flags & IFF_LOOPBACK) {
- if (!WARN_ON(rt->rt6i_idev == NULL) &&
- rt->rt6i_idev->dev->ifindex == oif)
- ret = 1;
- else
- return 0;
- }
- if (dev->ifindex == oif)
- return 2;
-
- return ret;
+ if ((dev->flags & IFF_LOOPBACK) &&
+ rt->rt6i_idev && rt->rt6i_idev->dev->ifindex == oif)
+ return 1;
+ return 0;
}
static inline int rt6_check_neigh(struct rt6_info *rt)
return NULL;
}
+EXPORT_SYMBOL(rt6_lookup);
+
/* ip6_ins_rt is called with FREE table->tb6_lock.
It takes new route entry, the addition fails by any reason the
route is freed. In any case, if caller does not hold it, it may
void ip6_route_input(struct sk_buff *skb)
{
- struct ipv6hdr *iph = skb->nh.ipv6h;
+ struct ipv6hdr *iph = ipv6_hdr(skb);
int flags = RT6_LOOKUP_F_HAS_SADDR;
struct flowi fl = {
.iif = skb->dev->ifindex,
return fib6_rule_lookup(fl, flags, ip6_pol_route_output);
}
+EXPORT_SYMBOL(ip6_route_output);
+
+static int ip6_blackhole_output(struct sk_buff *skb)
+{
+ kfree_skb(skb);
+ return 0;
+}
+
+int ip6_dst_blackhole(struct sock *sk, struct dst_entry **dstp, struct flowi *fl)
+{
+ struct rt6_info *ort = (struct rt6_info *) *dstp;
+ struct rt6_info *rt = (struct rt6_info *)
+ dst_alloc(&ip6_dst_blackhole_ops);
+ struct dst_entry *new = NULL;
+
+ if (rt) {
+ new = &rt->u.dst;
+
+ atomic_set(&new->__refcnt, 1);
+ new->__use = 1;
+ new->input = ip6_blackhole_output;
+ new->output = ip6_blackhole_output;
+
+ memcpy(new->metrics, ort->u.dst.metrics, RTAX_MAX*sizeof(u32));
+ new->dev = ort->u.dst.dev;
+ if (new->dev)
+ dev_hold(new->dev);
+ rt->rt6i_idev = ort->rt6i_idev;
+ if (rt->rt6i_idev)
+ in6_dev_hold(rt->rt6i_idev);
+ rt->rt6i_expires = 0;
+
+ ipv6_addr_copy(&rt->rt6i_gateway, &ort->rt6i_gateway);
+ rt->rt6i_flags = ort->rt6i_flags & ~RTF_EXPIRES;
+ rt->rt6i_metric = 0;
+
+ memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key));
+#ifdef CONFIG_IPV6_SUBTREES
+ memcpy(&rt->rt6i_src, &ort->rt6i_src, sizeof(struct rt6key));
+#endif
+
+ dst_free(new);
+ }
+
+ dst_release(*dstp);
+ *dstp = new;
+ return (new ? 0 : -ENOMEM);
+}
+EXPORT_SYMBOL_GPL(ip6_dst_blackhole);
/*
* Destination cache support functions
rtnl_unlock();
return err;
- };
+ }
return -EINVAL;
}
* Drop the packet on the floor
*/
-static inline int ip6_pkt_drop(struct sk_buff *skb, int code)
+static inline int ip6_pkt_drop(struct sk_buff *skb, int code,
+ int ipstats_mib_noroutes)
{
- int type = ipv6_addr_type(&skb->nh.ipv6h->daddr);
- if (type == IPV6_ADDR_ANY || type == IPV6_ADDR_RESERVED)
- IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_INADDRERRORS);
-
- IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_OUTNOROUTES);
+ int type;
+ switch (ipstats_mib_noroutes) {
+ case IPSTATS_MIB_INNOROUTES:
+ type = ipv6_addr_type(&ipv6_hdr(skb)->daddr);
+ if (type == IPV6_ADDR_ANY || type == IPV6_ADDR_RESERVED) {
+ IP6_INC_STATS(ip6_dst_idev(skb->dst), IPSTATS_MIB_INADDRERRORS);
+ break;
+ }
+ /* FALLTHROUGH */
+ case IPSTATS_MIB_OUTNOROUTES:
+ IP6_INC_STATS(ip6_dst_idev(skb->dst), ipstats_mib_noroutes);
+ break;
+ }
icmpv6_send(skb, ICMPV6_DEST_UNREACH, code, 0, skb->dev);
kfree_skb(skb);
return 0;
static int ip6_pkt_discard(struct sk_buff *skb)
{
- return ip6_pkt_drop(skb, ICMPV6_NOROUTE);
+ return ip6_pkt_drop(skb, ICMPV6_NOROUTE, IPSTATS_MIB_INNOROUTES);
}
static int ip6_pkt_discard_out(struct sk_buff *skb)
{
skb->dev = skb->dst->dev;
- return ip6_pkt_discard(skb);
+ return ip6_pkt_drop(skb, ICMPV6_NOROUTE, IPSTATS_MIB_OUTNOROUTES);
}
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
static int ip6_pkt_prohibit(struct sk_buff *skb)
{
- return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED);
+ return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_INNOROUTES);
}
static int ip6_pkt_prohibit_out(struct sk_buff *skb)
{
skb->dev = skb->dst->dev;
- return ip6_pkt_prohibit(skb);
+ return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_OUTNOROUTES);
}
static int ip6_pkt_blk_hole(struct sk_buff *skb)
return err;
}
-int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
+static int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
{
struct fib6_config cfg;
int err;
return ip6_route_del(&cfg);
}
-int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
+static int inet6_rtm_newroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
{
struct fib6_config cfg;
int err;
prefix, NLM_F_MULTI);
}
-int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg)
+static int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg)
{
struct nlattr *tb[RTA_MAX+1];
struct rt6_info *rt;
/* Reserve room for dummy headers, this skb can pass
through good chunk of routing engine.
*/
- skb->mac.raw = skb->data;
+ skb_reset_mac_header(skb);
skb_reserve(skb, MAX_HEADER + sizeof(struct ipv6hdr));
rt = (struct rt6_info*) ip6_route_output(NULL, &fl);
void __init ip6_route_init(void)
{
+#ifdef CONFIG_PROC_FS
struct proc_dir_entry *p;
-
+#endif
ip6_dst_ops.kmem_cachep =
kmem_cache_create("ip6_dst_cache", sizeof(struct rt6_info), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL, NULL);
+ ip6_dst_blackhole_ops.kmem_cachep = ip6_dst_ops.kmem_cachep;
+
fib6_init();
#ifdef CONFIG_PROC_FS
p = proc_net_create("ipv6_route", 0, rt6_proc_info);
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
fib6_rules_init();
#endif
+
+ __rtnl_register(PF_INET6, RTM_NEWROUTE, inet6_rtm_newroute, NULL);
+ __rtnl_register(PF_INET6, RTM_DELROUTE, inet6_rtm_delroute, NULL);
+ __rtnl_register(PF_INET6, RTM_GETROUTE, inet6_rtm_getroute, NULL);
}
void ip6_route_cleanup(void)