net/rxrpc/ar-proc.c

   1 /* /proc/net/ support for AF_RXRPC
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #include <linux/module.h>
  13 #include <net/sock.h>
  14 #include <net/af_rxrpc.h>
  15 #include "ar-internal.h"
  16
  17 static const char *rxrpc_conn_states[] = {
  18         [RXRPC_CONN_UNUSED]             = "Unused  ",
  19         [RXRPC_CONN_CLIENT]             = "Client  ",
  20         [RXRPC_CONN_SERVER_UNSECURED]   = "SvUnsec ",
  21         [RXRPC_CONN_SERVER_CHALLENGING] = "SvChall ",
  22         [RXRPC_CONN_SERVER]             = "SvSecure",
  23         [RXRPC_CONN_REMOTELY_ABORTED]   = "RmtAbort",
  24         [RXRPC_CONN_LOCALLY_ABORTED]    = "LocAbort",
  25         [RXRPC_CONN_NETWORK_ERROR]      = "NetError",
  26 };
  27
  28 /*
  29  * generate a list of extant and dead calls in /proc/net/rxrpc_calls
  30  */
  31 static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos)
  32 {
  33         struct list_head *_p;
  34         loff_t pos = *_pos;
  35
  36         read_lock(&rxrpc_call_lock);
  37         if (!pos)
  38                 return SEQ_START_TOKEN;
  39         pos--;
  40
  41         list_for_each(_p, &rxrpc_calls)
  42                 if (!pos--)
  43                         break;
  44
  45         return _p != &rxrpc_calls ? _p : NULL;
  46 }
  47
  48 static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
  49 {
  50         struct list_head *_p;
  51
  52         (*pos)++;
  53
  54         _p = v;
  55         _p = (v == SEQ_START_TOKEN) ? rxrpc_calls.next : _p->next;
  56
  57         return _p != &rxrpc_calls ? _p : NULL;
  58 }
  59
  60 static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
  61 {
  62         read_unlock(&rxrpc_call_lock);
  63 }
  64
  65 static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
  66 {
  67         struct rxrpc_transport *trans;
  68         struct rxrpc_call *call;
  69         char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
  70
  71         if (v == SEQ_START_TOKEN) {
  72                 seq_puts(seq,
  73                          "Proto Local                  Remote                "
  74                          " SvID ConnID   CallID   End Use State    Abort   "
  75                          " UserID\n");
  76                 return 0;
  77         }
  78
  79         call = list_entry(v, struct rxrpc_call, link);
  80         trans = call->conn->trans;
  81
  82         sprintf(lbuff, NIPQUAD_FMT":%u",
  83                 NIPQUAD(trans->local->srx.transport.sin.sin_addr),
  84                 ntohs(trans->local->srx.transport.sin.sin_port));
  85
  86         sprintf(rbuff, NIPQUAD_FMT":%u",
  87                 NIPQUAD(trans->peer->srx.transport.sin.sin_addr),
  88                 ntohs(trans->peer->srx.transport.sin.sin_port));
  89
  90         seq_printf(seq,
  91                    "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
  92                    " %-8.8s %08x %lx\n",
  93                    lbuff,
  94                    rbuff,
  95                    ntohs(call->conn->service_id),
  96                    ntohl(call->conn->cid),
  97                    ntohl(call->call_id),
  98                    call->conn->in_clientflag ? "Svc" : "Clt",
  99                    atomic_read(&call->usage),
 100                    rxrpc_call_states[call->state],
 101                    call->abort_code,
 102                    call->user_call_ID);
 103
 104         return 0;
 105 }
 106
 107 static struct seq_operations rxrpc_call_seq_ops = {
 108         .start  = rxrpc_call_seq_start,
 109         .next   = rxrpc_call_seq_next,
 110         .stop   = rxrpc_call_seq_stop,
 111         .show   = rxrpc_call_seq_show,
 112 };
 113
 114 static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
 115 {
 116         return seq_open(file, &rxrpc_call_seq_ops);
 117 }
 118
 119 struct file_operations rxrpc_call_seq_fops = {
 120         .owner          = THIS_MODULE,
 121         .open           = rxrpc_call_seq_open,
 122         .read           = seq_read,
 123         .llseek         = seq_lseek,
 124         .release        = seq_release_private,
 125 };
 126
 127 /*
 128  * generate a list of extant virtual connections in /proc/net/rxrpc_conns
 129  */
 130 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
 131 {
 132         struct list_head *_p;
 133         loff_t pos = *_pos;
 134
 135         read_lock(&rxrpc_connection_lock);
 136         if (!pos)
 137                 return SEQ_START_TOKEN;
 138         pos--;
 139
 140         list_for_each(_p, &rxrpc_connections)
 141                 if (!pos--)
 142                         break;
 143
 144         return _p != &rxrpc_connections ? _p : NULL;
 145 }
 146
 147 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
 148                                        loff_t *pos)
 149 {
 150         struct list_head *_p;
 151
 152         (*pos)++;
 153
 154         _p = v;
 155         _p = (v == SEQ_START_TOKEN) ? rxrpc_connections.next : _p->next;
 156
 157         return _p != &rxrpc_connections ? _p : NULL;
 158 }
 159
 160 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
 161 {
 162         read_unlock(&rxrpc_connection_lock);
 163 }
 164
 165 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
 166 {
 167         struct rxrpc_connection *conn;
 168         struct rxrpc_transport *trans;
 169         char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
 170
 171         if (v == SEQ_START_TOKEN) {
 172                 seq_puts(seq,
 173                          "Proto Local                  Remote                "
 174                          " SvID ConnID   Calls    End Use State    Key     "
 175                          " Serial   ISerial\n"
 176                          );
 177                 return 0;
 178         }
 179
 180         conn = list_entry(v, struct rxrpc_connection, link);
 181         trans = conn->trans;
 182
 183         sprintf(lbuff, NIPQUAD_FMT":%u",
 184                 NIPQUAD(trans->local->srx.transport.sin.sin_addr),
 185                 ntohs(trans->local->srx.transport.sin.sin_port));
 186
 187         sprintf(rbuff, NIPQUAD_FMT":%u",
 188                 NIPQUAD(trans->peer->srx.transport.sin.sin_addr),
 189                 ntohs(trans->peer->srx.transport.sin.sin_port));
 190
 191         seq_printf(seq,
 192                    "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
 193                    " %s %08x %08x %08x\n",
 194                    lbuff,
 195                    rbuff,
 196                    ntohs(conn->service_id),
 197                    ntohl(conn->cid),
 198                    conn->call_counter,
 199                    conn->in_clientflag ? "Svc" : "Clt",
 200                    atomic_read(&conn->usage),
 201                    rxrpc_conn_states[conn->state],
 202                    key_serial(conn->key),
 203                    atomic_read(&conn->serial),
 204                    atomic_read(&conn->hi_serial));
 205
 206         return 0;
 207 }
 208
 209 static struct seq_operations rxrpc_connection_seq_ops = {
 210         .start  = rxrpc_connection_seq_start,
 211         .next   = rxrpc_connection_seq_next,
 212         .stop   = rxrpc_connection_seq_stop,
 213         .show   = rxrpc_connection_seq_show,
 214 };
 215
 216
 217 static int rxrpc_connection_seq_open(struct inode *inode, struct file *file)
 218 {
 219         return seq_open(file, &rxrpc_connection_seq_ops);
 220 }
 221
 222 struct file_operations rxrpc_connection_seq_fops = {
 223         .owner          = THIS_MODULE,
 224         .open           = rxrpc_connection_seq_open,
 225         .read           = seq_read,
 226         .llseek         = seq_lseek,
 227         .release        = seq_release_private,
 228 };