Message ID | 20130210153522.GA20897@order.stressinduktion.org |
---|---|
State | Accepted, archived |
Delegated to: | David Miller |
Headers | show |
Hannes Frederic Sowa wrote: > v2: > a) moved before multicast source address check > b) changed comment to netdev style > > Cc: Erik Hugne <erik.hugne@ericsson.com> > Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> > Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> > Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> > --- > net/ipv6/ip6_input.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c > index 4ac5bf3..521d9fd 100644 > --- a/net/ipv6/ip6_input.c > +++ b/net/ipv6/ip6_input.c > @@ -118,6 +118,15 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt > ipv6_addr_loopback(&hdr->daddr)) > goto err; > > + /* RFC4291 2.7 > + * Nodes must not originate a packet to a multicast address whose scop > + * field contains the reserved value 0; if such a packet is received, it > + * must be silently dropped. > + */ > + if (ipv6_addr_is_multicast(&hdr->daddr) && > + IPV6_ADDR_MC_SCOPE(&hdr->daddr) == 0) > + goto err; > + > /* > * RFC4291 2.7 > * Multicast addresses must not be used as source addresses in IPv6 > Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> --yoshfuji -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
From: Hannes Frederic Sowa <hannes@stressinduktion.org> Date: Sun, 10 Feb 2013 16:35:22 +0100 > v2: > a) moved before multicast source address check > b) changed comment to netdev style > > Cc: Erik Hugne <erik.hugne@ericsson.com> > Cc: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> > Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> > Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index 4ac5bf3..521d9fd 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -118,6 +118,15 @@ int ipv6_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt ipv6_addr_loopback(&hdr->daddr)) goto err; + /* RFC4291 2.7 + * Nodes must not originate a packet to a multicast address whose scop + * field contains the reserved value 0; if such a packet is received, it + * must be silently dropped. + */ + if (ipv6_addr_is_multicast(&hdr->daddr) && + IPV6_ADDR_MC_SCOPE(&hdr->daddr) == 0) + goto err; + /* * RFC4291 2.7 * Multicast addresses must not be used as source addresses in IPv6