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

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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>
This commit is contained in:
Jan Engelhardt
2008-01-21 03:18:08 -08:00
committed by David S. Miller
parent 96750162b5
commit 1e637c74b0
5 changed files with 12 additions and 11 deletions
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12
net/ipv4/route.c
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@@ -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;