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Commit 6294e000 authored by YOSHIFUJI Hideaki's avatar YOSHIFUJI Hideaki
Browse files

[IPV6] NDISC: Ignore route information with /0 prefix from interior router. 



Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
parent 300aaeea

net/ipv6/ndisc.c

+7 −1
Original line number Original line Diff line number Diff line
@@ -1272,7 +1272,13 @@ static void ndisc_router_discovery(struct sk_buff *skb) 
		for (p = ndopts.nd_opts_ri;

		for (p = ndopts.nd_opts_ri;

		     p;

		     p;

		     p = ndisc_next_option(p, ndopts.nd_opts_ri_end)) {

		     p = ndisc_next_option(p, ndopts.nd_opts_ri_end)) {

			if (((struct route_info *)p)->prefix_len > in6_dev->cnf.accept_ra_rt_info_max_plen)

			struct route_info *ri = (struct route_info *)p;

#ifdef CONFIG_IPV6_NDISC_NODETYPE

			if (skb->ndisc_nodetype == NDISC_NODETYPE_NODEFAULT &&

			    ri->prefix_len == 0)

				continue;

#endif

			if (ri->prefix_len > in6_dev->cnf.accept_ra_rt_info_max_plen)

				continue;

				continue;

			rt6_route_rcv(skb->dev, (u8*)p, (p->nd_opt_len) << 3,

			rt6_route_rcv(skb->dev, (u8*)p, (p->nd_opt_len) << 3,

				      &ipv6_hdr(skb)->saddr);

				      &ipv6_hdr(skb)->saddr);