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net/ipv6/sysctl_net_ipv6.c
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/* * sysctl_net_ipv6.c: sysctl interface to net IPV6 subsystem. * * Changes: * YOSHIFUJI Hideaki @USAGI: added icmp sysctl table. */ #include <linux/mm.h> #include <linux/sysctl.h> |
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#include <linux/in6.h> #include <linux/ipv6.h> #include <net/ndisc.h> #include <net/ipv6.h> #include <net/addrconf.h> |
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#include <net/inet_frag.h> |
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static ctl_table ipv6_table_template[] = { |
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{ .ctl_name = NET_IPV6_ROUTE, .procname = "route", .maxlen = 0, .mode = 0555, |
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.child = ipv6_route_table_template |
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}, { .ctl_name = NET_IPV6_ICMP, .procname = "icmp", .maxlen = 0, .mode = 0555, |
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.child = ipv6_icmp_table_template |
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}, { .ctl_name = NET_IPV6_BINDV6ONLY, .procname = "bindv6only", |
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.data = &init_net.ipv6.sysctl.bindv6only, |
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.maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec }, { |
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.ctl_name = NET_IPV6_MLD_MAX_MSF, .procname = "mld_max_msf", .data = &sysctl_mld_max_msf, .maxlen = sizeof(int), .mode = 0644, .proc_handler = &proc_dointvec }, { .ctl_name = 0 } }; |
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struct ctl_path net_ipv6_ctl_path[] = { |
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{ .procname = "net", .ctl_name = CTL_NET, }, { .procname = "ipv6", .ctl_name = NET_IPV6, }, { }, |
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}; |
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EXPORT_SYMBOL_GPL(net_ipv6_ctl_path); |
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static int ipv6_sysctl_net_init(struct net *net) |
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{ |
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struct ctl_table *ipv6_table; struct ctl_table *ipv6_route_table; struct ctl_table *ipv6_icmp_table; int err; err = -ENOMEM; ipv6_table = kmemdup(ipv6_table_template, sizeof(ipv6_table_template), GFP_KERNEL); if (!ipv6_table) goto out; ipv6_route_table = ipv6_route_sysctl_init(net); if (!ipv6_route_table) goto out_ipv6_table; |
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ipv6_table[0].child = ipv6_route_table; |
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ipv6_icmp_table = ipv6_icmp_sysctl_init(net); if (!ipv6_icmp_table) goto out_ipv6_route_table; |
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ipv6_table[1].child = ipv6_icmp_table; |
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ipv6_table[2].data = &net->ipv6.sysctl.bindv6only; |
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/* We don't want this value to be per namespace, it should be global to all namespaces, so make it read-only when we are not in the init network namespace */ if (net != &init_net) |
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ipv6_table[3].mode = 0444; |
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net->ipv6.sysctl.table = register_net_sysctl_table(net, net_ipv6_ctl_path, ipv6_table); if (!net->ipv6.sysctl.table) |
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goto out_ipv6_icmp_table; err = 0; out: return err; |
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out_ipv6_icmp_table: kfree(ipv6_icmp_table); out_ipv6_route_table: kfree(ipv6_route_table); out_ipv6_table: kfree(ipv6_table); goto out; |
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} |
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static void ipv6_sysctl_net_exit(struct net *net) { |
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struct ctl_table *ipv6_table; struct ctl_table *ipv6_route_table; struct ctl_table *ipv6_icmp_table; ipv6_table = net->ipv6.sysctl.table->ctl_table_arg; ipv6_route_table = ipv6_table[0].child; ipv6_icmp_table = ipv6_table[1].child; unregister_net_sysctl_table(net->ipv6.sysctl.table); kfree(ipv6_table); kfree(ipv6_route_table); kfree(ipv6_icmp_table); |
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} static struct pernet_operations ipv6_sysctl_net_ops = { .init = ipv6_sysctl_net_init, .exit = ipv6_sysctl_net_exit, }; int ipv6_sysctl_register(void) { return register_pernet_subsys(&ipv6_sysctl_net_ops); } |
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void ipv6_sysctl_unregister(void) { |
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unregister_pernet_subsys(&ipv6_sysctl_net_ops); |
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} |