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/tcp_states.h>
  13 #include <net/ipx.h>
  14
  15 static __inline__ struct ipx_interface *ipx_get_interface_idx(loff_t pos)
  16 {
  17         struct ipx_interface *i;
  18
  19         list_for_each_entry(i, &ipx_interfaces, node)
  20                 if (!pos--)
  21                         goto out;
  22         i = NULL;
  23 out:
  24         return i;
  25 }
  26
  27 static struct ipx_interface *ipx_interfaces_next(struct ipx_interface *i)
  28 {
  29         struct ipx_interface *rc = NULL;
  30
  31         if (i->node.next != &ipx_interfaces)
  32                 rc = list_entry(i->node.next, struct ipx_interface, node);
  33         return rc;
  34 }
  35
  36 static void *ipx_seq_interface_start(struct seq_file *seq, loff_t *pos)
  37 {
  38         loff_t l = *pos;
  39
  40         spin_lock_bh(&ipx_interfaces_lock);
  41         return l ? ipx_get_interface_idx(--l) : SEQ_START_TOKEN;
  42 }
  43
  44 static void *ipx_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
  45 {
  46         struct ipx_interface *i;
  47
  48         ++*pos;
  49         if (v == SEQ_START_TOKEN)
  50                 i = ipx_interfaces_head();
  51         else
  52                 i = ipx_interfaces_next(v);
  53         return i;
  54 }
  55
  56 static void ipx_seq_interface_stop(struct seq_file *seq, void *v)
  57 {
  58         spin_unlock_bh(&ipx_interfaces_lock);
  59 }
  60
  61 static int ipx_seq_interface_show(struct seq_file *seq, void *v)
  62 {
  63         struct ipx_interface *i;
  64
  65         if (v == SEQ_START_TOKEN) {
  66                 seq_puts(seq, "Network    Node_Address   Primary  Device     "
  67                               "Frame_Type");
  68 #ifdef IPX_REFCNT_DEBUG
  69                 seq_puts(seq, "  refcnt");
  70 #endif
  71                 seq_puts(seq, "\n");
  72                 goto out;
  73         }
  74
  75         i = v;
  76         seq_printf(seq, "%08lX   ", (unsigned long int)ntohl(i->if_netnum));
  77         seq_printf(seq, "%02X%02X%02X%02X%02X%02X   ",
  78                         i->if_node[0], i->if_node[1], i->if_node[2],
  79                         i->if_node[3], i->if_node[4], i->if_node[5]);
  80         seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No");
  81         seq_printf(seq, "%-11s", ipx_device_name(i));
  82         seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type));
  83 #ifdef IPX_REFCNT_DEBUG
  84         seq_printf(seq, "%6d", atomic_read(&i->refcnt));
  85 #endif
  86         seq_puts(seq, "\n");
  87 out:
  88         return 0;
  89 }
  90
  91 static struct ipx_route *ipx_routes_head(void)
  92 {
  93         struct ipx_route *rc = NULL;
  94
  95         if (!list_empty(&ipx_routes))
  96                 rc = list_entry(ipx_routes.next, struct ipx_route, node);
  97         return rc;
  98 }
  99
 100 static struct ipx_route *ipx_routes_next(struct ipx_route *r)
 101 {
 102         struct ipx_route *rc = NULL;
 103
 104         if (r->node.next != &ipx_routes)
 105                 rc = list_entry(r->node.next, struct ipx_route, node);
 106         return rc;
 107 }
 108
 109 static __inline__ struct ipx_route *ipx_get_route_idx(loff_t pos)
 110 {
 111         struct ipx_route *r;
 112
 113         list_for_each_entry(r, &ipx_routes, node)
 114                 if (!pos--)
 115                         goto out;
 116         r = NULL;
 117 out:
 118         return r;
 119 }
 120
 121 static void *ipx_seq_route_start(struct seq_file *seq, loff_t *pos)
 122 {
 123         loff_t l = *pos;
 124         read_lock_bh(&ipx_routes_lock);
 125         return l ? ipx_get_route_idx(--l) : SEQ_START_TOKEN;
 126 }
 127
 128 static void *ipx_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
 129 {
 130         struct ipx_route *r;
 131
 132         ++*pos;
 133         if (v == SEQ_START_TOKEN)
 134                 r = ipx_routes_head();
 135         else
 136                 r = ipx_routes_next(v);
 137         return r;
 138 }
 139
 140 static void ipx_seq_route_stop(struct seq_file *seq, void *v)
 141 {
 142         read_unlock_bh(&ipx_routes_lock);
 143 }
 144
 145 static int ipx_seq_route_show(struct seq_file *seq, void *v)
 146 {
 147         struct ipx_route *rt;
 148
 149         if (v == SEQ_START_TOKEN) {
 150                 seq_puts(seq, "Network    Router_Net   Router_Node\n");
 151                 goto out;
 152         }
 153         rt = v;
 154         seq_printf(seq, "%08lX   ", (unsigned long int)ntohl(rt->ir_net));
 155         if (rt->ir_routed)
 156                 seq_printf(seq, "%08lX     %02X%02X%02X%02X%02X%02X\n",
 157                            (long unsigned int)ntohl(rt->ir_intrfc->if_netnum),
 158                            rt->ir_router_node[0], rt->ir_router_node[1],
 159                            rt->ir_router_node[2], rt->ir_router_node[3],
 160                            rt->ir_router_node[4], rt->ir_router_node[5]);
 161         else
 162                 seq_puts(seq, "Directly     Connected\n");
 163 out:
 164         return 0;
 165 }
 166
 167 static __inline__ struct sock *ipx_get_socket_idx(loff_t pos)
 168 {
 169         struct sock *s = NULL;
 170         struct hlist_node *node;
 171         struct ipx_interface *i;
 172
 173         list_for_each_entry(i, &ipx_interfaces, node) {
 174                 spin_lock_bh(&i->if_sklist_lock);
 175                 sk_for_each(s, node, &i->if_sklist) {
 176                         if (!pos)
 177                                 break;
 178                         --pos;
 179                 }
 180                 spin_unlock_bh(&i->if_sklist_lock);
 181                 if (!pos) {
 182                         if (node)
 183                                 goto found;
 184                         break;
 185                 }
 186         }
 187         s = NULL;
 188 found:
 189         return s;
 190 }
 191
 192 static void *ipx_seq_socket_start(struct seq_file *seq, loff_t *pos)
 193 {
 194         loff_t l = *pos;
 195
 196         spin_lock_bh(&ipx_interfaces_lock);
 197         return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN;
 198 }
 199
 200 static void *ipx_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
 201 {
 202         struct sock* sk, *next;
 203         struct ipx_interface *i;
 204         struct ipx_sock *ipxs;
 205
 206         ++*pos;
 207         if (v == SEQ_START_TOKEN) {
 208                 sk = NULL;
 209                 i = ipx_interfaces_head();
 210                 if (!i)
 211                         goto out;
 212                 sk = sk_head(&i->if_sklist);
 213                 if (sk)
 214                         spin_lock_bh(&i->if_sklist_lock);
 215                 goto out;
 216         }
 217         sk = v;
 218         next = sk_next(sk);
 219         if (next) {
 220                 sk = next;
 221                 goto out;
 222         }
 223         ipxs = ipx_sk(sk);
 224         i = ipxs->intrfc;
 225         spin_unlock_bh(&i->if_sklist_lock);
 226         sk = NULL;
 227         for (;;) {
 228                 i = ipx_interfaces_next(i);
 229                 if (!i)
 230                         break;
 231                 spin_lock_bh(&i->if_sklist_lock);
 232                 if (!hlist_empty(&i->if_sklist)) {
 233                         sk = sk_head(&i->if_sklist);
 234                         break;
 235                 }
 236                 spin_unlock_bh(&i->if_sklist_lock);
 237         }
 238 out:
 239         return sk;
 240 }
 241
 242 static int ipx_seq_socket_show(struct seq_file *seq, void *v)
 243 {
 244         struct sock *s;
 245         struct ipx_sock *ipxs;
 246
 247         if (v == SEQ_START_TOKEN) {
 248 #ifdef CONFIG_IPX_INTERN
 249                 seq_puts(seq, "Local_Address               "
 250                               "Remote_Address              Tx_Queue  "
 251                               "Rx_Queue  State  Uid\n");
 252 #else
 253                 seq_puts(seq, "Local_Address  Remote_Address              "
 254                               "Tx_Queue  Rx_Queue  State  Uid\n");
 255 #endif
 256                 goto out;
 257         }
 258
 259         s = v;
 260         ipxs = ipx_sk(s);
 261 #ifdef CONFIG_IPX_INTERN
 262         seq_printf(seq, "%08lX:%02X%02X%02X%02X%02X%02X:%04X  ",
 263                    (unsigned long)ntohl(ipxs->intrfc->if_netnum),
 264                    ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3],
 265                    ipxs->node[4], ipxs->node[5], ntohs(ipxs->port));
 266 #else
 267         seq_printf(seq, "%08lX:%04X  ", (unsigned long) ntohl(ipxs->intrfc->if_netnum),
 268                    ntohs(ipxs->port));
 269 #endif  /* CONFIG_IPX_INTERN */
 270         if (s->sk_state != TCP_ESTABLISHED)
 271                 seq_printf(seq, "%-28s", "Not_Connected");
 272         else {
 273                 seq_printf(seq, "%08lX:%02X%02X%02X%02X%02X%02X:%04X  ",
 274                            (unsigned long)ntohl(ipxs->dest_addr.net),
 275                            ipxs->dest_addr.node[0], ipxs->dest_addr.node[1],
 276                            ipxs->dest_addr.node[2], ipxs->dest_addr.node[3],
 277                            ipxs->dest_addr.node[4], ipxs->dest_addr.node[5],
 278                            ntohs(ipxs->dest_addr.sock));
 279         }
 280
 281         seq_printf(seq, "%08X  %08X  %02X     %03d\n",
 282                    atomic_read(&s->sk_wmem_alloc),
 283                    atomic_read(&s->sk_rmem_alloc),
 284                    s->sk_state, SOCK_INODE(s->sk_socket)->i_uid);
 285 out:
 286         return 0;
 287 }
 288
 289 static const struct seq_operations ipx_seq_interface_ops = {
 290         .start  = ipx_seq_interface_start,
 291         .next   = ipx_seq_interface_next,
 292         .stop   = ipx_seq_interface_stop,
 293         .show   = ipx_seq_interface_show,
 294 };
 295
 296 static const struct seq_operations ipx_seq_route_ops = {
 297         .start  = ipx_seq_route_start,
 298         .next   = ipx_seq_route_next,
 299         .stop   = ipx_seq_route_stop,
 300         .show   = ipx_seq_route_show,
 301 };
 302
 303 static const struct seq_operations ipx_seq_socket_ops = {
 304         .start  = ipx_seq_socket_start,
 305         .next   = ipx_seq_socket_next,
 306         .stop   = ipx_seq_interface_stop,
 307         .show   = ipx_seq_socket_show,
 308 };
 309
 310 static int ipx_seq_route_open(struct inode *inode, struct file *file)
 311 {
 312         return seq_open(file, &ipx_seq_route_ops);
 313 }
 314
 315 static int ipx_seq_interface_open(struct inode *inode, struct file *file)
 316 {
 317         return seq_open(file, &ipx_seq_interface_ops);
 318 }
 319
 320 static int ipx_seq_socket_open(struct inode *inode, struct file *file)
 321 {
 322         return seq_open(file, &ipx_seq_socket_ops);
 323 }
 324
 325 static const struct file_operations ipx_seq_interface_fops = {
 326         .owner          = THIS_MODULE,
 327         .open           = ipx_seq_interface_open,
 328         .read           = seq_read,
 329         .llseek         = seq_lseek,
 330         .release        = seq_release,
 331 };
 332
 333 static const struct file_operations ipx_seq_route_fops = {
 334         .owner          = THIS_MODULE,
 335         .open           = ipx_seq_route_open,
 336         .read           = seq_read,
 337         .llseek         = seq_lseek,
 338         .release        = seq_release,
 339 };
 340
 341 static const struct file_operations ipx_seq_socket_fops = {
 342         .owner          = THIS_MODULE,
 343         .open           = ipx_seq_socket_open,
 344         .read           = seq_read,
 345         .llseek         = seq_lseek,
 346         .release        = seq_release,
 347 };
 348
 349 static struct proc_dir_entry *ipx_proc_dir;
 350
 351 int __init ipx_proc_init(void)
 352 {
 353         struct proc_dir_entry *p;
 354         int rc = -ENOMEM;
 355
 356         ipx_proc_dir = proc_mkdir("ipx", proc_net);
 357
 358         if (!ipx_proc_dir)
 359                 goto out;
 360         p = create_proc_entry("interface", S_IRUGO, ipx_proc_dir);
 361         if (!p)
 362                 goto out_interface;
 363
 364         p->proc_fops = &ipx_seq_interface_fops;
 365         p = create_proc_entry("route", S_IRUGO, ipx_proc_dir);
 366         if (!p)
 367                 goto out_route;
 368
 369         p->proc_fops = &ipx_seq_route_fops;
 370         p = create_proc_entry("socket", S_IRUGO, ipx_proc_dir);
 371         if (!p)
 372                 goto out_socket;
 373
 374         p->proc_fops = &ipx_seq_socket_fops;
 375
 376         rc = 0;
 377 out:
 378         return rc;
 379 out_socket:
 380         remove_proc_entry("route", ipx_proc_dir);
 381 out_route:
 382         remove_proc_entry("interface", ipx_proc_dir);
 383 out_interface:
 384         remove_proc_entry("ipx", proc_net);
 385         goto out;
 386 }
 387
 388 void __exit ipx_proc_exit(void)
 389 {
 390         remove_proc_entry("interface", ipx_proc_dir);
 391         remove_proc_entry("route", ipx_proc_dir);
 392         remove_proc_entry("socket", ipx_proc_dir);
 393         remove_proc_entry("ipx", proc_net);
 394 }
 395
 396 #else /* CONFIG_PROC_FS */
 397
 398 int __init ipx_proc_init(void)
 399 {
 400         return 0;
 401 }
 402
 403 void __exit ipx_proc_exit(void)
 404 {
 405 }
 406
 407 #endif /* CONFIG_PROC_FS */