[NETNS][ICMP]: Register pernet subsys to make ICMP sysctls per-net.
This includes adding pernet_operations, empty init and exit hooks and a bit of changes in sysctl_ipv4_init just not to have this part in next patches. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -811,12 +811,34 @@ struct ctl_path net_ipv4_ctl_path[] = {
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};
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EXPORT_SYMBOL_GPL(net_ipv4_ctl_path);
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static __net_init int ipv4_sysctl_init_net(struct net *net)
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{
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return 0;
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}
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static __net_exit void ipv4_sysctl_exit_net(struct net *net)
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{
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}
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static __net_initdata struct pernet_operations ipv4_sysctl_ops = {
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.init = ipv4_sysctl_init_net,
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.exit = ipv4_sysctl_exit_net,
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};
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static __init int sysctl_ipv4_init(void)
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{
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struct ctl_table_header *hdr;
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hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table);
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return hdr == NULL ? -ENOMEM : 0;
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if (hdr == NULL)
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return -ENOMEM;
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if (register_pernet_subsys(&ipv4_sysctl_ops)) {
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unregister_sysctl_table(hdr);
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return -ENOMEM;
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}
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return 0;
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}
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__initcall(sysctl_ipv4_init);
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