[NETNS][IPV6]: Make multiple instance of sysctl tables.
Each network namespace wants its own set of sysctl value, eg. we
should not be able from a namespace to set a sysctl value for another
namespace , especially for the initial network namespace.
This patch duplicates the sysctl table when we register a new network
namespace for ipv6. The duplicated table are postfixed with the
"template" word to notify the developper the table is cloned.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index c3bbd86..dfe3b37 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -907,7 +907,7 @@
EXPORT_SYMBOL(icmpv6_err_convert);
#ifdef CONFIG_SYSCTL
-ctl_table ipv6_icmp_table[] = {
+ctl_table ipv6_icmp_table_template[] = {
{
.ctl_name = NET_IPV6_ICMP_RATELIMIT,
.procname = "ratelimit",
@@ -918,5 +918,15 @@
},
{ .ctl_name = 0 },
};
+
+struct ctl_table *ipv6_icmp_sysctl_init(struct net *net)
+{
+ struct ctl_table *table;
+
+ table = kmemdup(ipv6_icmp_table_template,
+ sizeof(ipv6_icmp_table_template),
+ GFP_KERNEL);
+ return table;
+}
#endif