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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2006-03-20 17:07:03 -0800
committerDavid S. Miller <davem@davemloft.net>2006-03-20 17:07:03 -0800
commit09c884d4c3b45cda904c2291d4723074ff523611 (patch)
tree90b893f1b83165d7088ecdead94085969e0a58ef /net/ipv6
parente317da96227cef28a137e2d1ad790b23e518dd2b (diff)
downloadlinux-09c884d4c3b45cda904c2291d4723074ff523611.tar.bz2
[IPV6]: ROUTE: Add accept_ra_rt_info_max_plen sysctl.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/addrconf.c19
-rw-r--r--net/ipv6/ndisc.c4
2 files changed, 22 insertions, 1 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e7add61e6e39..eb82cd5df8c6 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -170,6 +170,9 @@ struct ipv6_devconf ipv6_devconf = {
#ifdef CONFIG_IPV6_ROUTER_PREF
.accept_ra_rtr_pref = 1,
.rtr_probe_interval = 60 * HZ,
+#ifdef CONFIG_IPV6_ROUTE_INFO
+ .accept_ra_rt_info_max_plen = 0,
+#endif
#endif
};
@@ -197,6 +200,9 @@ static struct ipv6_devconf ipv6_devconf_dflt = {
#ifdef CONFIG_IPV6_ROUTER_PREF
.accept_ra_rtr_pref = 1,
.rtr_probe_interval = 60 * HZ,
+#ifdef CONFIG_IPV6_ROUTE_INFO
+ .accept_ra_rt_info_max_plen = 0,
+#endif
#endif
};
@@ -3133,6 +3139,9 @@ static void inline ipv6_store_devconf(struct ipv6_devconf *cnf,
#ifdef CONFIG_IPV6_ROUTER_PREF
array[DEVCONF_ACCEPT_RA_RTR_PREF] = cnf->accept_ra_rtr_pref;
array[DEVCONF_RTR_PROBE_INTERVAL] = cnf->rtr_probe_interval;
+#ifdef CONFIV_IPV6_ROUTE_INFO
+ array[DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN] = cnf->accept_ra_rt_info_max_plen;
+#endif
#endif
}
@@ -3620,6 +3629,16 @@ static struct addrconf_sysctl_table
.proc_handler = &proc_dointvec_jiffies,
.strategy = &sysctl_jiffies,
},
+#ifdef CONFIV_IPV6_ROUTE_INFO
+ {
+ .ctl_name = NET_IPV6_ACCEPT_RA_RT_INFO_MAX_PLEN,
+ .procname = "accept_ra_rt_info_max_plen",
+ .data = &ipv6_devconf.accept_ra_rt_info_max_plen,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec,
+ },
+#endif
#endif
{
.ctl_name = 0, /* sentinel */
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 1f6256909674..dfa20d3be9b6 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1214,11 +1214,13 @@ skip_defrtr:
}
#ifdef CONFIG_IPV6_ROUTE_INFO
- if (ndopts.nd_opts_ri) {
+ if (in6_dev->cnf.accept_ra_rtr_pref && 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)) {
+ if (((struct route_info *)p)->prefix_len > in6_dev->cnf.accept_ra_rt_info_max_plen)
+ continue;
rt6_route_rcv(skb->dev, (u8*)p, (p->nd_opt_len) << 3,
&skb->nh.ipv6h->saddr);
}