diff options
Diffstat (limited to 'net/x25/x25_proc.c')
| -rw-r--r-- | net/x25/x25_proc.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/net/x25/x25_proc.c b/net/x25/x25_proc.c new file mode 100644 index 000000000000..dfb80116c59f --- /dev/null +++ b/net/x25/x25_proc.c @@ -0,0 +1,256 @@ +/* + * X.25 Packet Layer release 002 + * + * This is ALPHA test software. This code may break your machine, + * randomly fail to work with new releases, misbehave and/or generally + * screw up. It might even work. + * + * This code REQUIRES 2.4 with seq_file support + * + * This module: + * This module is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * History + * 2002/10/06 Arnaldo Carvalho de Melo seq_file support + */ + +#include <linux/config.h> +#include <linux/init.h> +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#include <net/sock.h> +#include <net/x25.h> + +#ifdef CONFIG_PROC_FS +static __inline__ struct x25_route *x25_get_route_idx(loff_t pos) +{ + struct list_head *route_entry; + struct x25_route *rt = NULL; + + list_for_each(route_entry, &x25_route_list) { + rt = list_entry(route_entry, struct x25_route, node); + if (!pos--) + goto found; + } + rt = NULL; +found: + return rt; +} + +static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos) +{ + loff_t l = *pos; + + read_lock_bh(&x25_route_list_lock); + return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN; +} + +static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos) +{ + struct x25_route *rt; + + ++*pos; + if (v == SEQ_START_TOKEN) { + rt = NULL; + if (!list_empty(&x25_route_list)) + rt = list_entry(x25_route_list.next, + struct x25_route, node); + goto out; + } + rt = v; + if (rt->node.next != &x25_route_list) + rt = list_entry(rt->node.next, struct x25_route, node); + else + rt = NULL; +out: + return rt; +} + +static void x25_seq_route_stop(struct seq_file *seq, void *v) +{ + read_unlock_bh(&x25_route_list_lock); +} + +static int x25_seq_route_show(struct seq_file *seq, void *v) +{ + struct x25_route *rt; + + if (v == SEQ_START_TOKEN) { + seq_puts(seq, "Address Digits Device\n"); + goto out; + } + + rt = v; + seq_printf(seq, "%-15s %-6d %-5s\n", + rt->address.x25_addr, rt->sigdigits, + rt->dev ? rt->dev->name : "???"); +out: + return 0; +} + +static __inline__ struct sock *x25_get_socket_idx(loff_t pos) +{ + struct sock *s; + struct hlist_node *node; + + sk_for_each(s, node, &x25_list) + if (!pos--) + goto found; + s = NULL; +found: + return s; +} + +static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos) +{ + loff_t l = *pos; + + read_lock_bh(&x25_list_lock); + return l ? x25_get_socket_idx(--l) : SEQ_START_TOKEN; +} + +static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos) +{ + struct sock *s; + + ++*pos; + if (v == SEQ_START_TOKEN) { + s = sk_head(&x25_list); + goto out; + } + s = sk_next(v); +out: + return s; +} + +static void x25_seq_socket_stop(struct seq_file *seq, void *v) +{ + read_unlock_bh(&x25_list_lock); +} + +static int x25_seq_socket_show(struct seq_file *seq, void *v) +{ + struct sock *s; + struct x25_sock *x25; + struct net_device *dev; + const char *devname; + + if (v == SEQ_START_TOKEN) { + seq_printf(seq, "dest_addr src_addr dev lci st vs vr " + "va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n"); + goto out; + } + + s = v; + x25 = x25_sk(s); + + if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL) + devname = "???"; + else + devname = x25->neighbour->dev->name; + + seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu " + "%3lu %3lu %3lu %5d %5d %ld\n", + !x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr, + !x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr, + devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr, + x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ, + x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ, + atomic_read(&s->sk_wmem_alloc), + atomic_read(&s->sk_rmem_alloc), + s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L); +out: + return 0; +} + +static struct seq_operations x25_seq_route_ops = { + .start = x25_seq_route_start, + .next = x25_seq_route_next, + .stop = x25_seq_route_stop, + .show = x25_seq_route_show, +}; + +static struct seq_operations x25_seq_socket_ops = { + .start = x25_seq_socket_start, + .next = x25_seq_socket_next, + .stop = x25_seq_socket_stop, + .show = x25_seq_socket_show, +}; + +static int x25_seq_socket_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &x25_seq_socket_ops); +} + +static int x25_seq_route_open(struct inode *inode, struct file *file) +{ + return seq_open(file, &x25_seq_route_ops); +} + +static struct file_operations x25_seq_socket_fops = { + .owner = THIS_MODULE, + .open = x25_seq_socket_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +static struct file_operations x25_seq_route_fops = { + .owner = THIS_MODULE, + .open = x25_seq_route_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +static struct proc_dir_entry *x25_proc_dir; + +int __init x25_proc_init(void) +{ + struct proc_dir_entry *p; + int rc = -ENOMEM; + + x25_proc_dir = proc_mkdir("x25", proc_net); + if (!x25_proc_dir) + goto out; + + p = create_proc_entry("route", S_IRUGO, x25_proc_dir); + if (!p) + goto out_route; + p->proc_fops = &x25_seq_route_fops; + + p = create_proc_entry("socket", S_IRUGO, x25_proc_dir); + if (!p) + goto out_socket; + p->proc_fops = &x25_seq_socket_fops; + rc = 0; +out: + return rc; +out_socket: + remove_proc_entry("route", x25_proc_dir); +out_route: + remove_proc_entry("x25", proc_net); + goto out; +} + +void __exit x25_proc_exit(void) +{ + remove_proc_entry("route", x25_proc_dir); + remove_proc_entry("socket", x25_proc_dir); + remove_proc_entry("x25", proc_net); +} + +#else /* CONFIG_PROC_FS */ + +int __init x25_proc_init(void) +{ + return 0; +} + +void __exit x25_proc_exit(void) +{ +} +#endif /* CONFIG_PROC_FS */ |