release/src-rt-6.x.4708/linux/linux-2.6.36/net/ipx/ipx_proc.c

   1 /*
   2  *      IPX proc routines
   3  *
   4  *      Copyright(C) Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2002
   5  */
   6
   7 #include <linux/init.h>
   8 #ifdef CONFIG_PROC_FS
   9 #include <linux/proc_fs.h>
  10 #include <linux/spinlock.h>
  11 #include <linux/seq_file.h>
  12 #include <net/net_namespace.h>
  13 #include <net/tcp_states.h>
  14 #include <net/ipx.h>
  15
  16 static void *ipx_seq_interface_start(struct seq_file *seq, loff_t *pos)
  17 {
  18         spin_lock_bh(&ipx_interfaces_lock);
  19         return seq_list_start_head(&ipx_interfaces, *pos);
  20 }
  21
  22 static void *ipx_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
  23 {
  24         return seq_list_next(v, &ipx_interfaces, pos);
  25 }
  26
  27 static void ipx_seq_interface_stop(struct seq_file *seq, void *v)
  28 {
  29         spin_unlock_bh(&ipx_interfaces_lock);
  30 }
  31
  32 static int ipx_seq_interface_show(struct seq_file *seq, void *v)
  33 {
  34         struct ipx_interface *i;
  35
  36         if (v == &ipx_interfaces) {
  37                 seq_puts(seq, "Network    Node_Address   Primary  Device     "
  38                               "Frame_Type");
  39 #ifdef IPX_REFCNT_DEBUG
  40                 seq_puts(seq, "  refcnt");
  41 #endif
  42                 seq_puts(seq, "\n");
  43                 goto out;
  44         }
  45
  46         i = list_entry(v, struct ipx_interface, node);
  47         seq_printf(seq, "%08lX   ", (unsigned long int)ntohl(i->if_netnum));
  48         seq_printf(seq, "%02X%02X%02X%02X%02X%02X   ",
  49                         i->if_node[0], i->if_node[1], i->if_node[2],
  50                         i->if_node[3], i->if_node[4], i->if_node[5]);
  51         seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No");
  52         seq_printf(seq, "%-11s", ipx_device_name(i));
  53         seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type));
  54 #ifdef IPX_REFCNT_DEBUG
  55         seq_printf(seq, "%6d", atomic_read(&i->refcnt));
  56 #endif
  57         seq_puts(seq, "\n");
  58 out:
  59         return 0;
  60 }
  61
  62 static void *ipx_seq_route_start(struct seq_file *seq, loff_t *pos)
  63 {
  64         read_lock_bh(&ipx_routes_lock);
  65         return seq_list_start_head(&ipx_routes, *pos);
  66 }
  67
  68 static void *ipx_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
  69 {
  70         return seq_list_next(v, &ipx_routes, pos);
  71 }
  72
  73 static void ipx_seq_route_stop(struct seq_file *seq, void *v)
  74 {
  75         read_unlock_bh(&ipx_routes_lock);
  76 }
  77
  78 static int ipx_seq_route_show(struct seq_file *seq, void *v)
  79 {
  80         struct ipx_route *rt;
  81
  82         if (v == &ipx_routes) {
  83                 seq_puts(seq, "Network    Router_Net   Router_Node\n");
  84                 goto out;
  85         }
  86
  87         rt = list_entry(v, struct ipx_route, node);
  88
  89         seq_printf(seq, "%08lX   ", (unsigned long int)ntohl(rt->ir_net));
  90         if (rt->ir_routed)
  91                 seq_printf(seq, "%08lX     %02X%02X%02X%02X%02X%02X\n",
  92                            (long unsigned int)ntohl(rt->ir_intrfc->if_netnum),
  93                            rt->ir_router_node[0], rt->ir_router_node[1],
  94                            rt->ir_router_node[2], rt->ir_router_node[3],
  95                            rt->ir_router_node[4], rt->ir_router_node[5]);
  96         else
  97                 seq_puts(seq, "Directly     Connected\n");
  98 out:
  99         return 0;
 100 }
 101
 102 static __inline__ struct sock *ipx_get_socket_idx(loff_t pos)
 103 {
 104         struct sock *s = NULL;
 105         struct hlist_node *node;
 106         struct ipx_interface *i;
 107
 108         list_for_each_entry(i, &ipx_interfaces, node) {
 109                 spin_lock_bh(&i->if_sklist_lock);
 110                 sk_for_each(s, node, &i->if_sklist) {
 111                         if (!pos)
 112                                 break;
 113                         --pos;
 114                 }
 115                 spin_unlock_bh(&i->if_sklist_lock);
 116                 if (!pos) {
 117                         if (node)
 118                                 goto found;
 119                         break;
 120                 }
 121         }
 122         s = NULL;
 123 found:
 124         return s;
 125 }
 126
 127 static void *ipx_seq_socket_start(struct seq_file *seq, loff_t *pos)
 128 {
 129         loff_t l = *pos;
 130
 131         spin_lock_bh(&ipx_interfaces_lock);
 132         return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN;
 133 }
 134
 135 static void *ipx_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
 136 {
 137         struct sock* sk, *next;
 138         struct ipx_interface *i;
 139         struct ipx_sock *ipxs;
 140
 141         ++*pos;
 142         if (v == SEQ_START_TOKEN) {
 143                 sk = NULL;
 144                 i = ipx_interfaces_head();
 145                 if (!i)
 146                         goto out;
 147                 sk = sk_head(&i->if_sklist);
 148                 if (sk)
 149                         spin_lock_bh(&i->if_sklist_lock);
 150                 goto out;
 151         }
 152         sk = v;
 153         next = sk_next(sk);
 154         if (next) {
 155                 sk = next;
 156                 goto out;
 157         }
 158         ipxs = ipx_sk(sk);
 159         i = ipxs->intrfc;
 160         spin_unlock_bh(&i->if_sklist_lock);
 161         sk = NULL;
 162         for (;;) {
 163                 if (i->node.next == &ipx_interfaces)
 164                         break;
 165                 i = list_entry(i->node.next, struct ipx_interface, node);
 166                 spin_lock_bh(&i->if_sklist_lock);
 167                 if (!hlist_empty(&i->if_sklist)) {
 168                         sk = sk_head(&i->if_sklist);
 169                         break;
 170                 }
 171                 spin_unlock_bh(&i->if_sklist_lock);
 172         }
 173 out:
 174         return sk;
 175 }
 176
 177 static int ipx_seq_socket_show(struct seq_file *seq, void *v)
 178 {
 179         struct sock *s;
 180         struct ipx_sock *ipxs;
 181
 182         if (v == SEQ_START_TOKEN) {
 183 #ifdef CONFIG_IPX_INTERN
 184                 seq_puts(seq, "Local_Address               "
 185                               "Remote_Address              Tx_Queue  "
 186                               "Rx_Queue  State  Uid\n");
 187 #else
 188                 seq_puts(seq, "Local_Address  Remote_Address              "
 189                               "Tx_Queue  Rx_Queue  State  Uid\n");
 190 #endif
 191                 goto out;
 192         }
 193
 194         s = v;
 195         ipxs = ipx_sk(s);
 196 #ifdef CONFIG_IPX_INTERN
 197         seq_printf(seq, "%08lX:%02X%02X%02X%02X%02X%02X:%04X  ",
 198                    (unsigned long)ntohl(ipxs->intrfc->if_netnum),
 199                    ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3],
 200                    ipxs->node[4], ipxs->node[5], ntohs(ipxs->port));
 201 #else
 202         seq_printf(seq, "%08lX:%04X  ", (unsigned long) ntohl(ipxs->intrfc->if_netnum),
 203                    ntohs(ipxs->port));
 204 #endif  /* CONFIG_IPX_INTERN */
 205         if (s->sk_state != TCP_ESTABLISHED)
 206                 seq_printf(seq, "%-28s", "Not_Connected");
 207         else {
 208                 seq_printf(seq, "%08lX:%02X%02X%02X%02X%02X%02X:%04X  ",
 209                            (unsigned long)ntohl(ipxs->dest_addr.net),
 210                            ipxs->dest_addr.node[0], ipxs->dest_addr.node[1],
 211                            ipxs->dest_addr.node[2], ipxs->dest_addr.node[3],
 212                            ipxs->dest_addr.node[4], ipxs->dest_addr.node[5],
 213                            ntohs(ipxs->dest_addr.sock));
 214         }
 215
 216         seq_printf(seq, "%08X  %08X  %02X     %03d\n",
 217                    sk_wmem_alloc_get(s),
 218                    sk_rmem_alloc_get(s),
 219                    s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
 220 out:
 221         return 0;
 222 }
 223
 224 static const struct seq_operations ipx_seq_interface_ops = {
 225         .start  = ipx_seq_interface_start,
 226         .next   = ipx_seq_interface_next,
 227         .stop   = ipx_seq_interface_stop,
 228         .show   = ipx_seq_interface_show,
 229 };
 230
 231 static const struct seq_operations ipx_seq_route_ops = {
 232         .start  = ipx_seq_route_start,
 233         .next   = ipx_seq_route_next,
 234         .stop   = ipx_seq_route_stop,
 235         .show   = ipx_seq_route_show,
 236 };
 237
 238 static const struct seq_operations ipx_seq_socket_ops = {
 239         .start  = ipx_seq_socket_start,
 240         .next   = ipx_seq_socket_next,
 241         .stop   = ipx_seq_interface_stop,
 242         .show   = ipx_seq_socket_show,
 243 };
 244
 245 static int ipx_seq_route_open(struct inode *inode, struct file *file)
 246 {
 247         return seq_open(file, &ipx_seq_route_ops);
 248 }
 249
 250 static int ipx_seq_interface_open(struct inode *inode, struct file *file)
 251 {
 252         return seq_open(file, &ipx_seq_interface_ops);
 253 }
 254
 255 static int ipx_seq_socket_open(struct inode *inode, struct file *file)
 256 {
 257         return seq_open(file, &ipx_seq_socket_ops);
 258 }
 259
 260 static const struct file_operations ipx_seq_interface_fops = {
 261         .owner          = THIS_MODULE,
 262         .open           = ipx_seq_interface_open,
 263         .read           = seq_read,
 264         .llseek         = seq_lseek,
 265         .release        = seq_release,
 266 };
 267
 268 static const struct file_operations ipx_seq_route_fops = {
 269         .owner          = THIS_MODULE,
 270         .open           = ipx_seq_route_open,
 271         .read           = seq_read,
 272         .llseek         = seq_lseek,
 273         .release        = seq_release,
 274 };
 275
 276 static const struct file_operations ipx_seq_socket_fops = {
 277         .owner          = THIS_MODULE,
 278         .open           = ipx_seq_socket_open,
 279         .read           = seq_read,
 280         .llseek         = seq_lseek,
 281         .release        = seq_release,
 282 };
 283
 284 static struct proc_dir_entry *ipx_proc_dir;
 285
 286 int __init ipx_proc_init(void)
 287 {
 288         struct proc_dir_entry *p;
 289         int rc = -ENOMEM;
 290
 291         ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);
 292
 293         if (!ipx_proc_dir)
 294                 goto out;
 295         p = proc_create("interface", S_IRUGO,
 296                         ipx_proc_dir, &ipx_seq_interface_fops);
 297         if (!p)
 298                 goto out_interface;
 299
 300         p = proc_create("route", S_IRUGO, ipx_proc_dir, &ipx_seq_route_fops);
 301         if (!p)
 302                 goto out_route;
 303
 304         p = proc_create("socket", S_IRUGO, ipx_proc_dir, &ipx_seq_socket_fops);
 305         if (!p)
 306                 goto out_socket;
 307
 308         rc = 0;
 309 out:
 310         return rc;
 311 out_socket:
 312         remove_proc_entry("route", ipx_proc_dir);
 313 out_route:
 314         remove_proc_entry("interface", ipx_proc_dir);
 315 out_interface:
 316         remove_proc_entry("ipx", init_net.proc_net);
 317         goto out;
 318 }
 319
 320 void __exit ipx_proc_exit(void)
 321 {
 322         remove_proc_entry("interface", ipx_proc_dir);
 323         remove_proc_entry("route", ipx_proc_dir);
 324         remove_proc_entry("socket", ipx_proc_dir);
 325         remove_proc_entry("ipx", init_net.proc_net);
 326 }
 327
 328 #else /* CONFIG_PROC_FS */
 329
 330 int __init ipx_proc_init(void)
 331 {
 332         return 0;
 333 }
 334
 335 void __exit ipx_proc_exit(void)
 336 {
 337 }
 338
 339 #endif /* CONFIG_PROC_FS */