6 files changed, 13 insertions, 49 deletions

diff --git a/include/net/dst.h b/include/net/dst.h
index 69888f1502b1..7a0b1bde8e28 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -179,6 +179,7 @@ static inline struct dst_entry *dst_pop(struct dst_entry *dst)
         return child;
 }
 
+extern int dst_discard(struct sk_buff *skb);
 extern void * dst_alloc(struct dst_ops * ops);
 extern void __dst_free(struct dst_entry * dst);
 extern struct dst_entry *dst_destroy(struct dst_entry * dst);
diff --git a/net/core/dst.c b/net/core/dst.c
index 03daead3592a..f538061f4b93 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -153,11 +153,12 @@ loop:
 #endif
 }
 
-static int dst_discard(struct sk_buff *skb)
+int dst_discard(struct sk_buff *skb)
 {
         kfree_skb(skb);
         return 0;
 }
+EXPORT_SYMBOL(dst_discard);
 
 void * dst_alloc(struct dst_ops * ops)
 {
diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 23aa3556e56f..2a5bb0714c7e 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -765,17 +765,6 @@ drop:
 }
 
 /*
- * Drop packet. This is used for endnodes and for
- * when we should not be forwarding packets from
- * this dest.
- */
-static int dn_blackhole(struct sk_buff *skb)
-{
-        kfree_skb(skb);
-        return NET_RX_DROP;
-}
-
-/*
  * Used to catch bugs. This should never normally get
  * called.
  */
@@ -1396,7 +1385,7 @@ make_route:
                 default:
                 case RTN_UNREACHABLE:
                 case RTN_BLACKHOLE:
-                        rt->u.dst.input = dn_blackhole;
+                        rt->u.dst.input = dst_discard;
         }
         rt->rt_flags = flags;
         if (rt->u.dst.dev)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 49e008568ddf..137b8eb666b7 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -92,6 +92,7 @@
 #include <linux/jhash.h>
 #include <linux/rcupdate.h>
 #include <linux/times.h>
+#include <net/dst.h>
 #include <net/net_namespace.h>
 #include <net/protocol.h>
 #include <net/ip.h>
@@ -2357,12 +2358,6 @@ static struct dst_ops ipv4_dst_blackhole_ops = {
 };
 
 
-static int ipv4_blackhole_output(struct sk_buff *skb)
-{
-        kfree_skb(skb);
-        return 0;
-}
-
 static int ipv4_dst_blackhole(struct rtable **rp, struct flowi *flp, struct sock *sk)
 {
         struct rtable *ort = *rp;
@@ -2374,8 +2369,8 @@ static int ipv4_dst_blackhole(struct rtable **rp, struct flowi *flp, struct sock
 
                 atomic_set(&new->__refcnt, 1);
                 new->__use = 1;
-                new->input = ipv4_blackhole_output;
-                new->output = ipv4_blackhole_output;
+                new->input = dst_discard;
+                new->output = dst_discard;
                 memcpy(new->metrics, ort->u.dst.metrics, RTAX_MAX*sizeof(u32));
 
                 new->dev = ort->u.dst.dev;
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 1e89efd38a0c..cee06b1655c1 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -32,6 +32,7 @@
 #include <linux/in6.h>
 #include <linux/icmpv6.h>
 
+#include <net/dst.h>
 #include <net/sock.h>
 #include <net/snmp.h>
 
@@ -318,18 +319,8 @@ void __init ipv6_destopt_init(void)
                 printk(KERN_ERR "ipv6_destopt_init: Could not register protocol\n");
 }
 
-/********************************
-  NONE header. No data in packet.
- ********************************/
-
-static int ipv6_nodata_rcv(struct sk_buff *skb)
-{
-        kfree_skb(skb);
-        return 0;
-}
-
 static struct inet6_protocol nodata_protocol = {
-        .handler        =       ipv6_nodata_rcv,
+        .handler        =       dst_discard,
         .flags          =       INET6_PROTO_NOPOLICY,
 };
 
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 20083e0d3995..ac70e2d3b10c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -152,7 +152,6 @@ struct rt6_info ip6_null_entry = {
 
 static int ip6_pkt_prohibit(struct sk_buff *skb);
 static int ip6_pkt_prohibit_out(struct sk_buff *skb);
-static int ip6_pkt_blk_hole(struct sk_buff *skb);
 
 struct rt6_info ip6_prohibit_entry = {
         .u = {
@@ -181,8 +180,8 @@ struct rt6_info ip6_blk_hole_entry = {
                         .obsolete       = -1,
                         .error          = -EINVAL,
                         .metrics        = { [RTAX_HOPLIMIT - 1] = 255, },
-                        .input          = ip6_pkt_blk_hole,
-                        .output         = ip6_pkt_blk_hole,
+                        .input          = dst_discard,
+                        .output         = dst_discard,
                         .ops            = &ip6_dst_ops,
                         .path           = (struct dst_entry*)&ip6_blk_hole_entry,
                 }
@@ -782,12 +781,6 @@ struct dst_entry * ip6_route_output(struct sock *sk, struct flowi *fl)
 
 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;
@@ -800,8 +793,8 @@ int ip6_dst_blackhole(struct sock *sk, struct dst_entry **dstp, struct flowi *fl
 
                 atomic_set(&new->__refcnt, 1);
                 new->__use = 1;
-                new->input = ip6_blackhole_output;
-                new->output = ip6_blackhole_output;
+                new->input = dst_discard;
+                new->output = dst_discard;
 
                 memcpy(new->metrics, ort->u.dst.metrics, RTAX_MAX*sizeof(u32));
                 new->dev = ort->u.dst.dev;
@@ -1811,12 +1804,6 @@ static int ip6_pkt_prohibit_out(struct sk_buff *skb)
         return ip6_pkt_drop(skb, ICMPV6_ADM_PROHIBITED, IPSTATS_MIB_OUTNOROUTES);
 }
 
-static int ip6_pkt_blk_hole(struct sk_buff *skb)
-{
-        kfree_skb(skb);
-        return 0;
-}
-
 #endif
 
 /*