359 lines
7.7 KiB
C
359 lines
7.7 KiB
C
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/*
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* X.25 Packet Layer release 002
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*
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* This is ALPHA test software. This code may break your machine,
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* randomly fail to work with new releases, misbehave and/or generally
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* screw up. It might even work.
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*
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* This code REQUIRES 2.4 with seq_file support
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*
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* This module:
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* This module is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* History
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* 2002/10/06 Arnaldo Carvalho de Melo seq_file support
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*/
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#include <linux/init.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <net/net_namespace.h>
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#include <net/sock.h>
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#include <net/x25.h>
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#ifdef CONFIG_PROC_FS
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static __inline__ struct x25_route *x25_get_route_idx(loff_t pos)
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{
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struct list_head *route_entry;
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struct x25_route *rt = NULL;
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list_for_each(route_entry, &x25_route_list) {
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rt = list_entry(route_entry, struct x25_route, node);
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if (!pos--)
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goto found;
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}
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rt = NULL;
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found:
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return rt;
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}
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static void *x25_seq_route_start(struct seq_file *seq, loff_t *pos)
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__acquires(x25_route_list_lock)
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{
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loff_t l = *pos;
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read_lock_bh(&x25_route_list_lock);
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return l ? x25_get_route_idx(--l) : SEQ_START_TOKEN;
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}
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static void *x25_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct x25_route *rt;
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++*pos;
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if (v == SEQ_START_TOKEN) {
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rt = NULL;
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if (!list_empty(&x25_route_list))
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rt = list_entry(x25_route_list.next,
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struct x25_route, node);
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goto out;
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}
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rt = v;
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if (rt->node.next != &x25_route_list)
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rt = list_entry(rt->node.next, struct x25_route, node);
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else
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rt = NULL;
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out:
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return rt;
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}
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static void x25_seq_route_stop(struct seq_file *seq, void *v)
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__releases(x25_route_list_lock)
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{
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read_unlock_bh(&x25_route_list_lock);
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}
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static int x25_seq_route_show(struct seq_file *seq, void *v)
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{
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struct x25_route *rt;
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if (v == SEQ_START_TOKEN) {
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seq_puts(seq, "Address Digits Device\n");
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goto out;
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}
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rt = v;
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seq_printf(seq, "%-15s %-6d %-5s\n",
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rt->address.x25_addr, rt->sigdigits,
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rt->dev ? rt->dev->name : "???");
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out:
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return 0;
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}
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static __inline__ struct sock *x25_get_socket_idx(loff_t pos)
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{
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struct sock *s;
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struct hlist_node *node;
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sk_for_each(s, node, &x25_list)
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if (!pos--)
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goto found;
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s = NULL;
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found:
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return s;
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}
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static void *x25_seq_socket_start(struct seq_file *seq, loff_t *pos)
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__acquires(x25_list_lock)
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{
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loff_t l = *pos;
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read_lock_bh(&x25_list_lock);
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return l ? x25_get_socket_idx(--l) : SEQ_START_TOKEN;
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}
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static void *x25_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct sock *s;
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++*pos;
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if (v == SEQ_START_TOKEN) {
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s = sk_head(&x25_list);
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goto out;
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}
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s = sk_next(v);
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out:
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return s;
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}
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static void x25_seq_socket_stop(struct seq_file *seq, void *v)
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__releases(x25_list_lock)
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{
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read_unlock_bh(&x25_list_lock);
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}
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static int x25_seq_socket_show(struct seq_file *seq, void *v)
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{
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struct sock *s;
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struct x25_sock *x25;
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struct net_device *dev;
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const char *devname;
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if (v == SEQ_START_TOKEN) {
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seq_printf(seq, "dest_addr src_addr dev lci st vs vr "
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"va t t2 t21 t22 t23 Snd-Q Rcv-Q inode\n");
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goto out;
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}
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s = v;
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x25 = x25_sk(s);
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if (!x25->neighbour || (dev = x25->neighbour->dev) == NULL)
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devname = "???";
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else
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devname = x25->neighbour->dev->name;
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seq_printf(seq, "%-10s %-10s %-5s %3.3X %d %d %d %d %3lu %3lu "
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"%3lu %3lu %3lu %5d %5d %ld\n",
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!x25->dest_addr.x25_addr[0] ? "*" : x25->dest_addr.x25_addr,
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!x25->source_addr.x25_addr[0] ? "*" : x25->source_addr.x25_addr,
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devname, x25->lci & 0x0FFF, x25->state, x25->vs, x25->vr,
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x25->va, x25_display_timer(s) / HZ, x25->t2 / HZ,
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x25->t21 / HZ, x25->t22 / HZ, x25->t23 / HZ,
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sk_wmem_alloc_get(s),
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sk_rmem_alloc_get(s),
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s->sk_socket ? SOCK_INODE(s->sk_socket)->i_ino : 0L);
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out:
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return 0;
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}
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static __inline__ struct x25_forward *x25_get_forward_idx(loff_t pos)
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{
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struct x25_forward *f;
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struct list_head *entry;
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list_for_each(entry, &x25_forward_list) {
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f = list_entry(entry, struct x25_forward, node);
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if (!pos--)
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goto found;
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}
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f = NULL;
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found:
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return f;
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}
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static void *x25_seq_forward_start(struct seq_file *seq, loff_t *pos)
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__acquires(x25_forward_list_lock)
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{
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loff_t l = *pos;
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read_lock_bh(&x25_forward_list_lock);
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return l ? x25_get_forward_idx(--l) : SEQ_START_TOKEN;
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}
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static void *x25_seq_forward_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct x25_forward *f;
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++*pos;
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if (v == SEQ_START_TOKEN) {
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f = NULL;
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if (!list_empty(&x25_forward_list))
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f = list_entry(x25_forward_list.next,
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struct x25_forward, node);
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goto out;
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}
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f = v;
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if (f->node.next != &x25_forward_list)
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f = list_entry(f->node.next, struct x25_forward, node);
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else
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f = NULL;
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out:
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return f;
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}
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static void x25_seq_forward_stop(struct seq_file *seq, void *v)
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__releases(x25_forward_list_lock)
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{
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read_unlock_bh(&x25_forward_list_lock);
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}
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static int x25_seq_forward_show(struct seq_file *seq, void *v)
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{
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struct x25_forward *f;
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if (v == SEQ_START_TOKEN) {
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seq_printf(seq, "lci dev1 dev2\n");
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goto out;
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}
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f = v;
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seq_printf(seq, "%d %-10s %-10s\n",
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f->lci, f->dev1->name, f->dev2->name);
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out:
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return 0;
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}
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static const struct seq_operations x25_seq_route_ops = {
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.start = x25_seq_route_start,
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.next = x25_seq_route_next,
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.stop = x25_seq_route_stop,
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.show = x25_seq_route_show,
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};
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static const struct seq_operations x25_seq_socket_ops = {
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.start = x25_seq_socket_start,
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.next = x25_seq_socket_next,
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.stop = x25_seq_socket_stop,
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.show = x25_seq_socket_show,
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};
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static const struct seq_operations x25_seq_forward_ops = {
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.start = x25_seq_forward_start,
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.next = x25_seq_forward_next,
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.stop = x25_seq_forward_stop,
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.show = x25_seq_forward_show,
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};
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static int x25_seq_socket_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &x25_seq_socket_ops);
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}
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static int x25_seq_route_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &x25_seq_route_ops);
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}
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static int x25_seq_forward_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &x25_seq_forward_ops);
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}
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static const struct file_operations x25_seq_socket_fops = {
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.owner = THIS_MODULE,
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.open = x25_seq_socket_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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static const struct file_operations x25_seq_route_fops = {
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.owner = THIS_MODULE,
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.open = x25_seq_route_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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static const struct file_operations x25_seq_forward_fops = {
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.owner = THIS_MODULE,
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.open = x25_seq_forward_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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static struct proc_dir_entry *x25_proc_dir;
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int __init x25_proc_init(void)
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{
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struct proc_dir_entry *p;
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int rc = -ENOMEM;
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x25_proc_dir = proc_mkdir("x25", init_net.proc_net);
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if (!x25_proc_dir)
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goto out;
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p = proc_create("route", S_IRUGO, x25_proc_dir, &x25_seq_route_fops);
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if (!p)
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goto out_route;
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p = proc_create("socket", S_IRUGO, x25_proc_dir, &x25_seq_socket_fops);
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if (!p)
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goto out_socket;
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p = proc_create("forward", S_IRUGO, x25_proc_dir,
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&x25_seq_forward_fops);
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if (!p)
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goto out_forward;
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rc = 0;
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out:
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return rc;
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out_forward:
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remove_proc_entry("socket", x25_proc_dir);
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out_socket:
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remove_proc_entry("route", x25_proc_dir);
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out_route:
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remove_proc_entry("x25", init_net.proc_net);
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goto out;
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}
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void __exit x25_proc_exit(void)
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{
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remove_proc_entry("forward", x25_proc_dir);
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remove_proc_entry("route", x25_proc_dir);
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remove_proc_entry("socket", x25_proc_dir);
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remove_proc_entry("x25", init_net.proc_net);
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}
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#else /* CONFIG_PROC_FS */
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int __init x25_proc_init(void)
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{
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return 0;
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}
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void __exit x25_proc_exit(void)
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{
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}
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#endif /* CONFIG_PROC_FS */
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