Release 4.15 net/ipv6/sysctl_net_ipv6.c
// SPDX-License-Identifier: GPL-2.0
/*
* 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>
#include <linux/in6.h>
#include <linux/ipv6.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <net/ndisc.h>
#include <net/ipv6.h>
#include <net/addrconf.h>
#include <net/inet_frag.h>
#ifdef CONFIG_NETLABEL
#include <net/calipso.h>
#endif
static int one = 1;
static int auto_flowlabels_min;
static int auto_flowlabels_max = IP6_AUTO_FLOW_LABEL_MAX;
static struct ctl_table ipv6_table_template[] = {
{
.procname = "bindv6only",
.data = &init_net.ipv6.sysctl.bindv6only,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "anycast_src_echo_reply",
.data = &init_net.ipv6.sysctl.anycast_src_echo_reply,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "flowlabel_consistency",
.data = &init_net.ipv6.sysctl.flowlabel_consistency,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "auto_flowlabels",
.data = &init_net.ipv6.sysctl.auto_flowlabels,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &auto_flowlabels_min,
.extra2 = &auto_flowlabels_max
},
{
.procname = "fwmark_reflect",
.data = &init_net.ipv6.sysctl.fwmark_reflect,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "idgen_retries",
.data = &init_net.ipv6.sysctl.idgen_retries,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "idgen_delay",
.data = &init_net.ipv6.sysctl.idgen_delay,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_jiffies,
},
{
.procname = "flowlabel_state_ranges",
.data = &init_net.ipv6.sysctl.flowlabel_state_ranges,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "ip_nonlocal_bind",
.data = &init_net.ipv6.sysctl.ip_nonlocal_bind,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "flowlabel_reflect",
.data = &init_net.ipv6.sysctl.flowlabel_reflect,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "max_dst_opts_number",
.data = &init_net.ipv6.sysctl.max_dst_opts_cnt,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "max_hbh_opts_number",
.data = &init_net.ipv6.sysctl.max_hbh_opts_cnt,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "max_dst_opts_length",
.data = &init_net.ipv6.sysctl.max_dst_opts_len,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "max_hbh_length",
.data = &init_net.ipv6.sysctl.max_hbh_opts_len,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{ }
};
static struct ctl_table ipv6_rotable[] = {
{
.procname = "mld_max_msf",
.data = &sysctl_mld_max_msf,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
},
{
.procname = "mld_qrv",
.data = &sysctl_mld_qrv,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &one
},
#ifdef CONFIG_NETLABEL
{
.procname = "calipso_cache_enable",
.data = &calipso_cache_enabled,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
{
.procname = "calipso_cache_bucket_size",
.data = &calipso_cache_bucketsize,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec,
},
#endif /* CONFIG_NETLABEL */
{ }
};
static int __net_init ipv6_sysctl_net_init(struct net *net)
{
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_table[0].data = &net->ipv6.sysctl.bindv6only;
ipv6_table[1].data = &net->ipv6.sysctl.anycast_src_echo_reply;
ipv6_table[2].data = &net->ipv6.sysctl.flowlabel_consistency;
ipv6_table[3].data = &net->ipv6.sysctl.auto_flowlabels;
ipv6_table[4].data = &net->ipv6.sysctl.fwmark_reflect;
ipv6_table[5].data = &net->ipv6.sysctl.idgen_retries;
ipv6_table[6].data = &net->ipv6.sysctl.idgen_delay;
ipv6_table[7].data = &net->ipv6.sysctl.flowlabel_state_ranges;
ipv6_table[8].data = &net->ipv6.sysctl.ip_nonlocal_bind;
ipv6_table[9].data = &net->ipv6.sysctl.flowlabel_reflect;
ipv6_table[10].data = &net->ipv6.sysctl.max_dst_opts_cnt;
ipv6_table[11].data = &net->ipv6.sysctl.max_hbh_opts_cnt;
ipv6_table[12].data = &net->ipv6.sysctl.max_dst_opts_len;
ipv6_table[13].data = &net->ipv6.sysctl.max_hbh_opts_len;
ipv6_route_table = ipv6_route_sysctl_init(net);
if (!ipv6_route_table)
goto out_ipv6_table;
ipv6_icmp_table = ipv6_icmp_sysctl_init(net);
if (!ipv6_icmp_table)
goto out_ipv6_route_table;
net->ipv6.sysctl.hdr = register_net_sysctl(net, "net/ipv6", ipv6_table);
if (!net->ipv6.sysctl.hdr)
goto out_ipv6_icmp_table;
net->ipv6.sysctl.route_hdr =
register_net_sysctl(net, "net/ipv6/route", ipv6_route_table);
if (!net->ipv6.sysctl.route_hdr)
goto out_unregister_ipv6_table;
net->ipv6.sysctl.icmp_hdr =
register_net_sysctl(net, "net/ipv6/icmp", ipv6_icmp_table);
if (!net->ipv6.sysctl.icmp_hdr)
goto out_unregister_route_table;
err = 0;
out:
return err;
out_unregister_route_table:
unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
out_unregister_ipv6_table:
unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
out_ipv6_icmp_table:
kfree(ipv6_icmp_table);
out_ipv6_route_table:
kfree(ipv6_route_table);
out_ipv6_table:
kfree(ipv6_table);
goto out;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Lezcano | 146 | 31.53% | 4 | 21.05% |
Tom Herbert | 112 | 24.19% | 4 | 21.05% |
Eric W. Biedermann | 99 | 21.38% | 1 | 5.26% |
Hannes Frederic Sowa | 34 | 7.34% | 2 | 10.53% |
Jakub Sitnicki | 16 | 3.46% | 1 | 5.26% |
Florent Fourcot | 16 | 3.46% | 1 | 5.26% |
François-Xavier Le Bail | 16 | 3.46% | 2 | 10.53% |
David S. Miller | 14 | 3.02% | 1 | 5.26% |
Linus Torvalds (pre-git) | 8 | 1.73% | 1 | 5.26% |
Pavel Emelyanov | 1 | 0.22% | 1 | 5.26% |
Alexey Dobriyan | 1 | 0.22% | 1 | 5.26% |
Total | 463 | 100.00% | 19 | 100.00% |
static void __net_exit ipv6_sysctl_net_exit(struct net *net)
{
struct ctl_table *ipv6_table;
struct ctl_table *ipv6_route_table;
struct ctl_table *ipv6_icmp_table;
ipv6_table = net->ipv6.sysctl.hdr->ctl_table_arg;
ipv6_route_table = net->ipv6.sysctl.route_hdr->ctl_table_arg;
ipv6_icmp_table = net->ipv6.sysctl.icmp_hdr->ctl_table_arg;
unregister_net_sysctl_table(net->ipv6.sysctl.icmp_hdr);
unregister_net_sysctl_table(net->ipv6.sysctl.route_hdr);
unregister_net_sysctl_table(net->ipv6.sysctl.hdr);
kfree(ipv6_table);
kfree(ipv6_route_table);
kfree(ipv6_icmp_table);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Daniel Lezcano | 70 | 63.06% | 2 | 50.00% |
Eric W. Biedermann | 40 | 36.04% | 1 | 25.00% |
Alexey Dobriyan | 1 | 0.90% | 1 | 25.00% |
Total | 111 | 100.00% | 4 | 100.00% |
static struct pernet_operations ipv6_sysctl_net_ops = {
.init = ipv6_sysctl_net_init,
.exit = ipv6_sysctl_net_exit,
};
static struct ctl_table_header *ip6_header;
int ipv6_sysctl_register(void)
{
int err = -ENOMEM;
ip6_header = register_net_sysctl(&init_net, "net/ipv6", ipv6_rotable);
if (!ip6_header)
goto out;
err = register_pernet_subsys(&ipv6_sysctl_net_ops);
if (err)
goto err_pernet;
out:
return err;
err_pernet:
unregister_net_sysctl_table(ip6_header);
goto out;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Pavel Emelyanov | 43 | 68.25% | 1 | 20.00% |
Daniel Lezcano | 13 | 20.63% | 1 | 20.00% |
Eric W. Biedermann | 5 | 7.94% | 1 | 20.00% |
Gerrit Renker | 1 | 1.59% | 1 | 20.00% |
Ian Morris | 1 | 1.59% | 1 | 20.00% |
Total | 63 | 100.00% | 5 | 100.00% |
void ipv6_sysctl_unregister(void)
{
unregister_net_sysctl_table(ip6_header);
unregister_pernet_subsys(&ipv6_sysctl_net_ops);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 10 | 55.56% | 1 | 33.33% |
Pavel Emelyanov | 5 | 27.78% | 1 | 33.33% |
Daniel Lezcano | 3 | 16.67% | 1 | 33.33% |
Total | 18 | 100.00% | 3 | 100.00% |
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Tom Herbert | 393 | 27.68% | 5 | 13.16% |
Daniel Lezcano | 257 | 18.10% | 4 | 10.53% |
Hannes Frederic Sowa | 151 | 10.63% | 3 | 7.89% |
Eric W. Biedermann | 146 | 10.28% | 3 | 7.89% |
Huw Davies | 76 | 5.35% | 1 | 2.63% |
Pavel Emelyanov | 67 | 4.72% | 3 | 7.89% |
François-Xavier Le Bail | 53 | 3.73% | 2 | 5.26% |
Florent Fourcot | 53 | 3.73% | 1 | 2.63% |
Jakub Sitnicki | 53 | 3.73% | 1 | 2.63% |
Linus Torvalds (pre-git) | 46 | 3.24% | 1 | 2.63% |
Lorenzo Colitti | 37 | 2.61% | 1 | 2.63% |
David L Stevens | 29 | 2.04% | 1 | 2.63% |
Art Haas | 15 | 1.06% | 1 | 2.63% |
Hideaki Yoshifuji / 吉藤英明 | 15 | 1.06% | 2 | 5.26% |
David S. Miller | 14 | 0.99% | 1 | 2.63% |
Tejun Heo | 3 | 0.21% | 1 | 2.63% |
Paul Gortmaker | 3 | 0.21% | 1 | 2.63% |
Joe Perches | 2 | 0.14% | 1 | 2.63% |
Alexey Dobriyan | 2 | 0.14% | 1 | 2.63% |
Gerrit Renker | 2 | 0.14% | 1 | 2.63% |
Adrian Bunk | 1 | 0.07% | 1 | 2.63% |
Greg Kroah-Hartman | 1 | 0.07% | 1 | 2.63% |
Ian Morris | 1 | 0.07% | 1 | 2.63% |
Total | 1420 | 100.00% | 38 | 100.00% |
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