1 files changed, 19 insertions, 0 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 */