mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
63159f29be
The ipv6 code uses a mixture of coding styles. In some instances check for NULL pointer is done as x == NULL and sometimes as !x. !x is preferred according to checkpatch and this patch makes the code consistent by adopting the latter form. No changes detected by objdiff. Signed-off-by: Ian Morris <ipm@chirality.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
200 lines
4.8 KiB
C
200 lines
4.8 KiB
C
/*
|
|
* 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>
|
|
|
|
static int one = 1;
|
|
|
|
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
|
|
},
|
|
{
|
|
.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,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
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
|
|
},
|
|
{ }
|
|
};
|
|
|
|
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_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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void ipv6_sysctl_unregister(void)
|
|
{
|
|
unregister_net_sysctl_table(ip6_header);
|
|
unregister_pernet_subsys(&ipv6_sysctl_net_ops);
|
|
}
|