From: YOSHIFUJI Hideaki Date: Sun, 16 Mar 2008 03:56:52 +0000 (-0400) Subject: [IPV6] NDISC: Ignore route information with /0 prefix from interior router. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6294e000736401d4415ad41f408e56e14aaaf7b4;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [IPV6] NDISC: Ignore route information with /0 prefix from interior router. Signed-off-by: YOSHIFUJI Hideaki --- diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 53b546019fd5..16273e11e53d 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1272,7 +1272,13 @@ skip_linkparms: for (p = ndopts.nd_opts_ri; p; 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; rt6_route_rcv(skb->dev, (u8*)p, (p->nd_opt_len) << 3, &ipv6_hdr(skb)->saddr);