[IPV4]: Enable use of 240/4 address space.

This short patch modifies the IPv4 networking to enable use of the
240.0.0.0/4 (aka "class-E") address space as propsed in the internet
draft draft-fuller-240space-00.txt.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 6 deletions

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index fc0145385e80..f80c761ea0bb 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1154,7 +1154,7 @@ void ip_rt_redirect(__be32 old_gw, __be32 daddr, __be32 new_gw,
                 return;
 
         if (new_gw == old_gw || !IN_DEV_RX_REDIRECTS(in_dev)
-            || ipv4_is_multicast(new_gw) || ipv4_is_badclass(new_gw)
+            || ipv4_is_multicast(new_gw) || ipv4_is_lbcast(new_gw)
             || ipv4_is_zeronet(new_gw))
                 goto reject_redirect;
 
@@ -1634,7 +1634,7 @@ static int ip_route_input_mc(struct sk_buff *skb, __be32 daddr, __be32 saddr,
         if (in_dev == NULL)
                 return -EINVAL;
 
-        if (ipv4_is_multicast(saddr) || ipv4_is_badclass(saddr) ||
+        if (ipv4_is_multicast(saddr) || ipv4_is_lbcast(saddr) ||
             ipv4_is_loopback(saddr) || skb->protocol != htons(ETH_P_IP))
                 goto e_inval;
 
@@ -1891,7 +1891,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
            by fib_lookup.
          */
 
-        if (ipv4_is_multicast(saddr) || ipv4_is_badclass(saddr) ||
+        if (ipv4_is_multicast(saddr) || ipv4_is_lbcast(saddr) ||
             ipv4_is_loopback(saddr))
                 goto martian_source;
 
@@ -1904,7 +1904,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
         if (ipv4_is_zeronet(saddr))
                 goto martian_source;
 
-        if (ipv4_is_badclass(daddr) || ipv4_is_zeronet(daddr) ||
+        if (ipv4_is_lbcast(daddr) || ipv4_is_zeronet(daddr) ||
             ipv4_is_loopback(daddr))
                 goto martian_destination;
 
@@ -2125,7 +2125,7 @@ static inline int __mkroute_output(struct rtable **result,
                 res->type = RTN_BROADCAST;
         else if (ipv4_is_multicast(fl->fl4_dst))
                 res->type = RTN_MULTICAST;
-        else if (ipv4_is_badclass(fl->fl4_dst) || ipv4_is_zeronet(fl->fl4_dst))
+        else if (ipv4_is_lbcast(fl->fl4_dst) || ipv4_is_zeronet(fl->fl4_dst))
                 return -EINVAL;
 
         if (dev_out->flags & IFF_LOOPBACK)
@@ -2276,7 +2276,7 @@ static int ip_route_output_slow(struct rtable **rp, const struct flowi *oldflp)
         if (oldflp->fl4_src) {
                 err = -EINVAL;
                 if (ipv4_is_multicast(oldflp->fl4_src) ||
-                    ipv4_is_badclass(oldflp->fl4_src) ||
+                    ipv4_is_lbcast(oldflp->fl4_src) ||
                     ipv4_is_zeronet(oldflp->fl4_src))
                         goto out;