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ipv{4,6}/ping: simplify proc file creation 

Remove the pointless ping_seq_afinfo indirection and make the code look
like most other protocols.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2018-04-10 20:04:20 +02:00
parent 37d849bb42
commit f455022166
3 changed files with 38 additions and 60 deletions
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11
include/net/ping.h
View File

@ -83,20 +83,9 @@ int ping_queue_rcv_skb(struct sock *sk, struct sk_buff *skb);
bool ping_rcv(struct sk_buff *skb);
#ifdef CONFIG_PROC_FS
struct ping_seq_afinfo {
char *name;
sa_family_t family;
const struct file_operations *seq_fops;
const struct seq_operations seq_ops;
};
extern const struct file_operations ping_seq_fops;
void *ping_seq_start(struct seq_file *seq, loff_t *pos, sa_family_t family);
void *ping_seq_next(struct seq_file *seq, void *v, loff_t *pos);
void ping_seq_stop(struct seq_file *seq, void *v);
int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo);
void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo);
int __init ping_proc_init(void);
void ping_proc_exit(void);

52
net/ipv4/ping.c
View File

@ -1150,58 +1150,36 @@ static int ping_v4_seq_show(struct seq_file *seq, void *v)
return 0;
}
static int ping_seq_open(struct inode *inode, struct file *file)
static const struct seq_operations ping_v4_seq_ops = {
.start = ping_v4_seq_start,
.show = ping_v4_seq_show,
.next = ping_seq_next,
.stop = ping_seq_stop,
};
static int ping_v4_seq_open(struct inode *inode, struct file *file)
{
struct ping_seq_afinfo *afinfo = PDE_DATA(inode);
return seq_open_net(inode, file, &afinfo->seq_ops,
return seq_open_net(inode, file, &ping_v4_seq_ops,
sizeof(struct ping_iter_state));
}
const struct file_operations ping_seq_fops = {
.open = ping_seq_open,
const struct file_operations ping_v4_seq_fops = {
.open = ping_v4_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net,
};
EXPORT_SYMBOL_GPL(ping_seq_fops);
static struct ping_seq_afinfo ping_v4_seq_afinfo = {
.name = "icmp",
.family = AF_INET,
.seq_fops = &ping_seq_fops,
.seq_ops = {
.start = ping_v4_seq_start,
.show = ping_v4_seq_show,
.next = ping_seq_next,
.stop = ping_seq_stop,
},
};
int ping_proc_register(struct net *net, struct ping_seq_afinfo *afinfo)
{
struct proc_dir_entry *p;
p = proc_create_data(afinfo->name, 0444, net->proc_net,
afinfo->seq_fops, afinfo);
if (!p)
return -ENOMEM;
return 0;
}
EXPORT_SYMBOL_GPL(ping_proc_register);
void ping_proc_unregister(struct net *net, struct ping_seq_afinfo *afinfo)
{
remove_proc_entry(afinfo->name, net->proc_net);
}
EXPORT_SYMBOL_GPL(ping_proc_unregister);
static int __net_init ping_v4_proc_init_net(struct net *net)
{
return ping_proc_register(net, &ping_v4_seq_afinfo);
if (!proc_create("icmp", 0444, net->proc_net, &ping_v4_seq_fops))
return -ENOMEM;
return 0;
}
static void __net_exit ping_v4_proc_exit_net(struct net *net)
{
ping_proc_unregister(net, &ping_v4_seq_afinfo);
remove_proc_entry("icmp", net->proc_net);
}
static struct pernet_operations ping_v4_net_ops = {

35
net/ipv6/ping.c
View File

@ -24,6 +24,7 @@
#include <net/protocol.h>
#include <net/udp.h>
#include <net/transp_v6.h>
#include <linux/proc_fs.h>
#include <net/ping.h>
/* Compatibility glue so we can support IPv6 when it's compiled as a module */
@ -215,26 +216,36 @@ static int ping_v6_seq_show(struct seq_file *seq, void *v)
return 0;
}
static struct ping_seq_afinfo ping_v6_seq_afinfo = {
.name = "icmp6",
.family = AF_INET6,
.seq_fops = &ping_seq_fops,
.seq_ops = {
.start = ping_v6_seq_start,
.show = ping_v6_seq_show,
.next = ping_seq_next,
.stop = ping_seq_stop,
},
static const struct seq_operations ping_v6_seq_ops = {
.start = ping_v6_seq_start,
.show = ping_v6_seq_show,
.next = ping_seq_next,
.stop = ping_seq_stop,
};
static int ping_v6_seq_open(struct inode *inode, struct file *file)
{
return seq_open_net(inode, file, &ping_v6_seq_ops,
sizeof(struct ping_iter_state));
}
const struct file_operations ping_v6_seq_fops = {
.open = ping_v6_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net,
};
static int __net_init ping_v6_proc_init_net(struct net *net)
{
return ping_proc_register(net, &ping_v6_seq_afinfo);
if (!proc_create("icmp6", 0444, net->proc_net, &ping_v6_seq_fops))
return -ENOMEM;
return 0;
}
static void __net_init ping_v6_proc_exit_net(struct net *net)
{
return ping_proc_unregister(net, &ping_v6_seq_afinfo);
remove_proc_entry("icmp6", net->proc_net);
}
static struct pernet_operations ping_v6_net_ops = {