+
+ /* Control parameters for ECHO replies. */
+ net->ipv4.sysctl_icmp_echo_ignore_all = 0;
+ net->ipv4.sysctl_icmp_echo_ignore_broadcasts = 1;
+
+ /* Control parameter - ignore bogus broadcast responses? */
+ net->ipv4.sysctl_icmp_ignore_bogus_error_responses = 1;
+
+ /*
+ * Configurable global rate limit.
+ *
+ * ratelimit defines tokens/packet consumed for dst->rate_token
+ * bucket ratemask defines which icmp types are ratelimited by
+ * setting it's bit position.
+ *
+ * default:
+ * dest unreachable (3), source quench (4),
+ * time exceeded (11), parameter problem (12)
+ */
+
+ net->ipv4.sysctl_icmp_ratelimit = 1 * HZ;
+ net->ipv4.sysctl_icmp_ratemask = 0x1818;
+ net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr = 0;
+
+ return 0;
+
+fail:
+ for_each_possible_cpu(i)
+ inet_ctl_sock_destroy(net->ipv4.icmp_sk[i]);
+ kfree(net->ipv4.icmp_sk);
+ return err;
+}
+
+static struct pernet_operations __net_initdata icmp_sk_ops = {
+ .init = icmp_sk_init,
+ .exit = icmp_sk_exit,
+};
+
+int __init icmp_init(void)
+{
+ return register_pernet_subsys(&icmp_sk_ops);