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[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191).

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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki
2006-03-20 17:06:24 -08:00
committed by David S. Miller
parent 52e1635631
commit 70ceb4f539
6 changed files with 191 additions and 1 deletions
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25
net/ipv6/ndisc.c
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@@ -156,7 +156,11 @@ struct neigh_table nd_tbl = {
/* ND options */
struct ndisc_options {
struct nd_opt_hdr *nd_opt_array[__ND_OPT_MAX];
struct nd_opt_hdr *nd_opt_array[__ND_OPT_ARRAY_MAX];
#ifdef CONFIG_IPV6_ROUTE_INFO
struct nd_opt_hdr *nd_opts_ri;
struct nd_opt_hdr *nd_opts_ri_end;
#endif
};
#define nd_opts_src_lladdr nd_opt_array[ND_OPT_SOURCE_LL_ADDR]
@@ -255,6 +259,13 @@ static struct ndisc_options *ndisc_parse_options(u8 *opt, int opt_len,
if (ndopts->nd_opt_array[nd_opt->nd_opt_type] == 0)
ndopts->nd_opt_array[nd_opt->nd_opt_type] = nd_opt;
break;
#ifdef CONFIG_IPV6_ROUTE_INFO
case ND_OPT_ROUTE_INFO:
ndopts->nd_opts_ri_end = nd_opt;
if (!ndopts->nd_opts_ri)
ndopts->nd_opts_ri = nd_opt;
break;
#endif
default:
/*
* Unknown options must be silently ignored,
@@ -1202,6 +1213,18 @@ skip_defrtr:
NEIGH_UPDATE_F_ISROUTER);
}
#ifdef CONFIG_IPV6_ROUTE_INFO
if (ndopts.nd_opts_ri) {
struct nd_opt_hdr *p;
for (p = ndopts.nd_opts_ri;
p;
p = ndisc_next_option(p, ndopts.nd_opts_ri_end)) {
rt6_route_rcv(skb->dev, (u8*)p, (p->nd_opt_len) << 3,
&skb->nh.ipv6h->saddr);
}
}
#endif
if (in6_dev->cnf.accept_ra_pinfo && ndopts.nd_opts_pi) {
struct nd_opt_hdr *p;
for (p = ndopts.nd_opts_pi;