[IPV6]: ROUTE: Add router_probe_interval sysctl.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 87bbd77..88efed0 100644
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -789,6 +789,12 @@
Default Maximum Transfer Unit
Default: 1280 (IPv6 required minimum)
+router_probe_interval - INTEGER
+ Minimum interval (in seconds) between Router Probing described
+ in RFC4191.
+
+ Default: 60
+
router_solicitation_delay - INTEGER
Number of seconds to wait after interface is brought up
before sending Router Solicitations.
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h
index 108b75d..c609cc7 100644
--- a/include/linux/ipv6.h
+++ b/include/linux/ipv6.h
@@ -149,6 +149,7 @@
__s32 accept_ra_pinfo;
#ifdef CONFIG_IPV6_ROUTER_PREF
__s32 accept_ra_rtr_pref;
+ __s32 rtr_probe_interval;
#endif
void *sysctl;
};
@@ -175,6 +176,7 @@
DEVCONF_ACCEPT_RA_DEFRTR,
DEVCONF_ACCEPT_RA_PINFO,
DEVCONF_ACCEPT_RA_RTR_PREF,
+ DEVCONF_RTR_PROBE_INTERVAL,
DEVCONF_MAX
};
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 236f537..f49488f 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -534,6 +534,7 @@
NET_IPV6_ACCEPT_RA_DEFRTR=18,
NET_IPV6_ACCEPT_RA_PINFO=19,
NET_IPV6_ACCEPT_RA_RTR_PREF=20,
+ NET_IPV6_RTR_PROBE_INTERVAL=21,
__NET_IPV6_MAX
};
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 51edba5..e7add61 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -169,6 +169,7 @@
.accept_ra_pinfo = 1,
#ifdef CONFIG_IPV6_ROUTER_PREF
.accept_ra_rtr_pref = 1,
+ .rtr_probe_interval = 60 * HZ,
#endif
};
@@ -195,6 +196,7 @@
.accept_ra_pinfo = 1,
#ifdef CONFIG_IPV6_ROUTER_PREF
.accept_ra_rtr_pref = 1,
+ .rtr_probe_interval = 60 * HZ,
#endif
};
@@ -3130,6 +3132,7 @@
array[DEVCONF_ACCEPT_RA_PINFO] = cnf->accept_ra_pinfo;
#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;
#endif
}
@@ -3608,6 +3611,15 @@
.mode = 0644,
.proc_handler = &proc_dointvec,
},
+ {
+ .ctl_name = NET_IPV6_RTR_PROBE_INTERVAL,
+ .procname = "router_probe_interval",
+ .data = &ipv6_devconf.rtr_probe_interval,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_jiffies,
+ .strategy = &sysctl_jiffies,
+ },
#endif
{
.ctl_name = 0, /* sentinel */
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8ba8900..c797b9b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -234,7 +234,7 @@
return;
read_lock_bh(&neigh->lock);
if (!(neigh->nud_state & NUD_VALID) &&
- time_after(jiffies, neigh->updated + 60 * HZ)) {
+ time_after(jiffies, neigh->updated + rt->rt6i_idev->cnf.rtr_probe_interval)) {
struct in6_addr mcaddr;
struct in6_addr *target;