[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>
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index c609cc7..1263d8c 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -150,6 +150,9 @@
 #ifdef CONFIG_IPV6_ROUTER_PREF
 	__s32		accept_ra_rtr_pref;
 	__s32		rtr_probe_interval;
+#ifdef CONFIG_IPV6_ROUTE_INFO
+	__s32		accept_ra_rt_info_max_plen;
+#endif
 #endif
 	void		*sysctl;
 };
@@ -177,6 +180,7 @@
 	DEVCONF_ACCEPT_RA_PINFO,
 	DEVCONF_ACCEPT_RA_RTR_PREF,
 	DEVCONF_RTR_PROBE_INTERVAL,
+	DEVCONF_ACCEPT_RA_RT_INFO_MAX_PLEN,
 	DEVCONF_MAX
 };