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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2006-03-20 17:06:24 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 17:06:24 -0800
commit70ceb4f53929f73746be72f73707cd9f8753e2fc (patch)
treee562929b0c800b0243e203587065e05323baba59 /net/ipv6/ndisc.c
parent52e1635631b342803aecaf81a362c1464e3da2e5 (diff)
[IPV6]: ROUTE: Add experimental support for Route Information Option in RA (RFC4191).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ndisc.c')
-rw-r--r--net/ipv6/ndisc.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index f4462ee3302..1f625690967 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -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;