X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=net%2Fipv6%2Froute.c;h=fe8d9837f9f89a2067b5f633d5a9cdd992385bf2;hb=abdba717253382a669af9c719313ec602cc95a2d;hp=ad9b285692ba72f8f44a76174ee9725bc5e08e15;hpb=0bce0b7a3b25b33220be77dcaf3dc4585641100c;p=powerpc.git

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index ad9b285692..fe8d9837f9 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -119,6 +119,19 @@ static struct dst_ops ip6_dst_ops = {
 	.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 = {
@@ -575,6 +588,8 @@ struct rt6_info *rt6_lookup(struct in6_addr *daddr, struct in6_addr *saddr,
 	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
@@ -724,7 +739,7 @@ out2:
 
 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,
@@ -829,6 +844,55 @@ struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)
 	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
@@ -1757,7 +1821,7 @@ int ipv6_route_ioctl(unsigned int cmd, void __user *arg)
 		rtnl_unlock();
 
 		return err;
-	};
+	}
 
 	return -EINVAL;
 }
@@ -1766,13 +1830,22 @@ int ipv6_route_ioctl(unsigned int cmd, void __user *arg)
  *	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;
@@ -1780,26 +1853,26 @@ static inline int ip6_pkt_drop(struct sk_buff *skb, int code)
 
 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)
@@ -1926,7 +1999,7 @@ void rt6_mtu_change(struct net_device *dev, unsigned mtu)
 	fib6_clean_all(rt6_mtu_change_route, 0, &arg);
 }
 
-static struct nla_policy rtm_ipv6_policy[RTA_MAX+1] __read_mostly = {
+static const struct nla_policy rtm_ipv6_policy[RTA_MAX+1] = {
 	[RTA_GATEWAY]           = { .len = sizeof(struct in6_addr) },
 	[RTA_OIF]               = { .type = NLA_U32 },
 	[RTA_IIF]		= { .type = NLA_U32 },
@@ -2003,7 +2076,7 @@ errout:
 	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;
@@ -2015,7 +2088,7 @@ int inet6_rtm_delroute(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 	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;
@@ -2152,7 +2225,7 @@ int rt6_dump_route(struct rt6_info *rt, void *p_arg)
 		     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;
@@ -2206,7 +2279,7 @@ int inet6_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr* nlh, void *arg)
 	/* 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);
@@ -2477,11 +2550,14 @@ ctl_table ipv6_route_table[] = {
 
 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);
@@ -2496,6 +2572,10 @@ void __init ip6_route_init(void)
 #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)