[NETNS][IPV6]: Make sysctls route per namespace.
All the sysctl concerning the routes are moved to the network
namespace structure. A helper function is called to initialize the
variables.
Because the ipv6 protocol is not yet per namespace, the variables are
accessed relatively from the network namespace.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 0c7382f..d2b3cf6 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -73,14 +73,6 @@
#define CLONE_OFFLINK_ROUTE 0
-static int ip6_rt_max_size = 4096;
-static int ip6_rt_gc_min_interval = HZ / 2;
-static int ip6_rt_gc_timeout = 60*HZ;
-int ip6_rt_gc_interval = 30*HZ;
-static int ip6_rt_gc_elasticity = 9;
-static int ip6_rt_mtu_expires = 10*60*HZ;
-static int ip6_rt_min_advmss = IPV6_MIN_MTU - 20 - 40;
-
static struct rt6_info * ip6_rt_copy(struct rt6_info *ort);
static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie);
static struct dst_entry *ip6_negative_advice(struct dst_entry *);
@@ -894,8 +886,8 @@
{
mtu -= sizeof(struct ipv6hdr) + sizeof(struct tcphdr);
- if (mtu < ip6_rt_min_advmss)
- mtu = ip6_rt_min_advmss;
+ if (mtu < init_net.ipv6.sysctl.ip6_rt_min_advmss)
+ mtu = init_net.ipv6.sysctl.ip6_rt_min_advmss;
/*
* Maximal non-jumbo IPv6 payload is IPV6_MAXPLEN and
@@ -995,19 +987,19 @@
static unsigned long last_gc;
unsigned long now = jiffies;
- if (time_after(last_gc + ip6_rt_gc_min_interval, now) &&
- atomic_read(&ip6_dst_ops.entries) <= ip6_rt_max_size)
+ if (time_after(last_gc + init_net.ipv6.sysctl.ip6_rt_gc_min_interval, now) &&
+ atomic_read(&ip6_dst_ops.entries) <= init_net.ipv6.sysctl.ip6_rt_max_size)
goto out;
expire++;
fib6_run_gc(expire);
last_gc = now;
if (atomic_read(&ip6_dst_ops.entries) < ip6_dst_ops.gc_thresh)
- expire = ip6_rt_gc_timeout>>1;
+ expire = init_net.ipv6.sysctl.ip6_rt_gc_timeout>>1;
out:
- expire -= expire>>ip6_rt_gc_elasticity;
- return (atomic_read(&ip6_dst_ops.entries) > ip6_rt_max_size);
+ expire -= expire>>init_net.ipv6.sysctl.ip6_rt_gc_elasticity;
+ return (atomic_read(&ip6_dst_ops.entries) > init_net.ipv6.sysctl.ip6_rt_max_size);
}
/* Clean host part of a prefix. Not necessary in radix tree,
@@ -1513,7 +1505,7 @@
rt->u.dst.metrics[RTAX_MTU-1] = pmtu;
if (allfrag)
rt->u.dst.metrics[RTAX_FEATURES-1] |= RTAX_FEATURE_ALLFRAG;
- dst_set_expires(&rt->u.dst, ip6_rt_mtu_expires);
+ dst_set_expires(&rt->u.dst, init_net.ipv6.sysctl.ip6_rt_mtu_expires);
rt->rt6i_flags |= RTF_MODIFIED|RTF_EXPIRES;
goto out;
}
@@ -1539,7 +1531,7 @@
* which is 10 mins. After 10 mins the decreased pmtu is expired
* and detecting PMTU increase will be automatically happened.
*/
- dst_set_expires(&nrt->u.dst, ip6_rt_mtu_expires);
+ dst_set_expires(&nrt->u.dst, init_net.ipv6.sysctl.ip6_rt_mtu_expires);
nrt->rt6i_flags |= RTF_DYNAMIC|RTF_EXPIRES;
ip6_ins_rt(nrt);
@@ -2395,15 +2387,14 @@
#ifdef CONFIG_SYSCTL
-static int flush_delay;
-
static
int ipv6_sysctl_rtcache_flush(ctl_table *ctl, int write, struct file * filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
+ int delay = init_net.ipv6.sysctl.flush_delay;
if (write) {
proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
- fib6_run_gc(flush_delay <= 0 ? ~0UL : (unsigned long)flush_delay);
+ fib6_run_gc(delay <= 0 ? ~0UL : (unsigned long)delay);
return 0;
} else
return -EINVAL;
@@ -2412,7 +2403,7 @@
ctl_table ipv6_route_table_template[] = {
{
.procname = "flush",
- .data = &flush_delay,
+ .data = &init_net.ipv6.sysctl.flush_delay,
.maxlen = sizeof(int),
.mode = 0200,
.proc_handler = &ipv6_sysctl_rtcache_flush
@@ -2428,7 +2419,7 @@
{
.ctl_name = NET_IPV6_ROUTE_MAX_SIZE,
.procname = "max_size",
- .data = &ip6_rt_max_size,
+ .data = &init_net.ipv6.sysctl.ip6_rt_max_size,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
@@ -2436,7 +2427,7 @@
{
.ctl_name = NET_IPV6_ROUTE_GC_MIN_INTERVAL,
.procname = "gc_min_interval",
- .data = &ip6_rt_gc_min_interval,
+ .data = &init_net.ipv6.sysctl.ip6_rt_gc_min_interval,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -2445,7 +2436,7 @@
{
.ctl_name = NET_IPV6_ROUTE_GC_TIMEOUT,
.procname = "gc_timeout",
- .data = &ip6_rt_gc_timeout,
+ .data = &init_net.ipv6.sysctl.ip6_rt_gc_timeout,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -2454,7 +2445,7 @@
{
.ctl_name = NET_IPV6_ROUTE_GC_INTERVAL,
.procname = "gc_interval",
- .data = &ip6_rt_gc_interval,
+ .data = &init_net.ipv6.sysctl.ip6_rt_gc_interval,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -2463,7 +2454,7 @@
{
.ctl_name = NET_IPV6_ROUTE_GC_ELASTICITY,
.procname = "gc_elasticity",
- .data = &ip6_rt_gc_elasticity,
+ .data = &init_net.ipv6.sysctl.ip6_rt_gc_elasticity,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -2472,7 +2463,7 @@
{
.ctl_name = NET_IPV6_ROUTE_MTU_EXPIRES,
.procname = "mtu_expires",
- .data = &ip6_rt_mtu_expires,
+ .data = &init_net.ipv6.sysctl.ip6_rt_mtu_expires,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -2481,7 +2472,7 @@
{
.ctl_name = NET_IPV6_ROUTE_MIN_ADVMSS,
.procname = "min_adv_mss",
- .data = &ip6_rt_min_advmss,
+ .data = &init_net.ipv6.sysctl.ip6_rt_min_advmss,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_jiffies,
@@ -2490,7 +2481,7 @@
{
.ctl_name = NET_IPV6_ROUTE_GC_MIN_INTERVAL_MS,
.procname = "gc_min_interval_ms",
- .data = &ip6_rt_gc_min_interval,
+ .data = &init_net.ipv6.sysctl.ip6_rt_gc_min_interval,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_ms_jiffies,
