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 const char *rxrpc_call_states[] = {
  29         [RXRPC_CALL_CLIENT_SEND_REQUEST]        = "ClSndReq",
  30         [RXRPC_CALL_CLIENT_AWAIT_REPLY]         = "ClAwtRpl",
  31         [RXRPC_CALL_CLIENT_RECV_REPLY]          = "ClRcvRpl",
  32         [RXRPC_CALL_CLIENT_FINAL_ACK]           = "ClFnlACK",
  33         [RXRPC_CALL_SERVER_SECURING]            = "SvSecure",
  34         [RXRPC_CALL_SERVER_ACCEPTING]           = "SvAccept",
  35         [RXRPC_CALL_SERVER_RECV_REQUEST]        = "SvRcvReq",
  36         [RXRPC_CALL_SERVER_ACK_REQUEST]         = "SvAckReq",
  37         [RXRPC_CALL_SERVER_SEND_REPLY]          = "SvSndRpl",
  38         [RXRPC_CALL_SERVER_AWAIT_ACK]           = "SvAwtACK",
  39         [RXRPC_CALL_COMPLETE]                   = "Complete",
  40         [RXRPC_CALL_SERVER_BUSY]                = "SvBusy  ",
  41         [RXRPC_CALL_REMOTELY_ABORTED]           = "RmtAbort",
  42         [RXRPC_CALL_LOCALLY_ABORTED]            = "LocAbort",
  43         [RXRPC_CALL_NETWORK_ERROR]              = "NetError",
  44         [RXRPC_CALL_DEAD]                       = "Dead    ",
  45 };
  46
  47 /*
  48  * generate a list of extant and dead calls in /proc/net/rxrpc_calls
  49  */
  50 static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos)
  51 {
  52         struct list_head *_p;
  53         loff_t pos = *_pos;
  54
  55         read_lock(&rxrpc_call_lock);
  56         if (!pos)
  57                 return SEQ_START_TOKEN;
  58         pos--;
  59
  60         list_for_each(_p, &rxrpc_calls)
  61                 if (!pos--)
  62                         break;
  63
  64         return _p != &rxrpc_calls ? _p : NULL;
  65 }
  66
  67 static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
  68 {
  69         struct list_head *_p;
  70
  71         (*pos)++;
  72
  73         _p = v;
  74         _p = (v == SEQ_START_TOKEN) ? rxrpc_calls.next : _p->next;
  75
  76         return _p != &rxrpc_calls ? _p : NULL;
  77 }
  78
  79 static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
  80 {
  81         read_unlock(&rxrpc_call_lock);
  82 }
  83
  84 static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
  85 {
  86         struct rxrpc_transport *trans;
  87         struct rxrpc_call *call;
  88         char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
  89
  90         if (v == SEQ_START_TOKEN) {
  91                 seq_puts(seq,
  92                          "Proto Local                  Remote                "
  93                          " SvID ConnID   CallID   End Use State    Abort   "
  94                          " UserID\n");
  95                 return 0;
  96         }
  97
  98         call = list_entry(v, struct rxrpc_call, link);
  99         trans = call->conn->trans;
 100
 101         sprintf(lbuff, NIPQUAD_FMT":%u",
 102                 NIPQUAD(trans->local->srx.transport.sin.sin_addr),
 103                 ntohs(trans->local->srx.transport.sin.sin_port));
 104
 105         sprintf(rbuff, NIPQUAD_FMT":%u",
 106                 NIPQUAD(trans->peer->srx.transport.sin.sin_addr),
 107                 ntohs(trans->peer->srx.transport.sin.sin_port));
 108
 109         seq_printf(seq,
 110                    "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
 111                    " %-8.8s %08x %lx\n",
 112                    lbuff,
 113                    rbuff,
 114                    ntohs(call->conn->service_id),
 115                    ntohl(call->conn->cid),
 116                    ntohl(call->call_id),
 117                    call->conn->in_clientflag ? "Svc" : "Clt",
 118                    atomic_read(&call->usage),
 119                    rxrpc_call_states[call->state],
 120                    call->abort_code,
 121                    call->user_call_ID);
 122
 123         return 0;
 124 }
 125
 126 static struct seq_operations rxrpc_call_seq_ops = {
 127         .start  = rxrpc_call_seq_start,
 128         .next   = rxrpc_call_seq_next,
 129         .stop   = rxrpc_call_seq_stop,
 130         .show   = rxrpc_call_seq_show,
 131 };
 132
 133 static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
 134 {
 135         return seq_open(file, &rxrpc_call_seq_ops);
 136 }
 137
 138 struct file_operations rxrpc_call_seq_fops = {
 139         .owner          = THIS_MODULE,
 140         .open           = rxrpc_call_seq_open,
 141         .read           = seq_read,
 142         .llseek         = seq_lseek,
 143         .release        = seq_release_private,
 144 };
 145
 146 /*
 147  * generate a list of extant virtual connections in /proc/net/rxrpc_conns
 148  */
 149 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
 150 {
 151         struct list_head *_p;
 152         loff_t pos = *_pos;
 153
 154         read_lock(&rxrpc_connection_lock);
 155         if (!pos)
 156                 return SEQ_START_TOKEN;
 157         pos--;
 158
 159         list_for_each(_p, &rxrpc_connections)
 160                 if (!pos--)
 161                         break;
 162
 163         return _p != &rxrpc_connections ? _p : NULL;
 164 }
 165
 166 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
 167                                        loff_t *pos)
 168 {
 169         struct list_head *_p;
 170
 171         (*pos)++;
 172
 173         _p = v;
 174         _p = (v == SEQ_START_TOKEN) ? rxrpc_connections.next : _p->next;
 175
 176         return _p != &rxrpc_connections ? _p : NULL;
 177 }
 178
 179 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
 180 {
 181         read_unlock(&rxrpc_connection_lock);
 182 }
 183
 184 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
 185 {
 186         struct rxrpc_connection *conn;
 187         struct rxrpc_transport *trans;
 188         char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
 189
 190         if (v == SEQ_START_TOKEN) {
 191                 seq_puts(seq,
 192                          "Proto Local                  Remote                "
 193                          " SvID ConnID   Calls    End Use State    Key     "
 194                          " Serial   ISerial\n"
 195                          );
 196                 return 0;
 197         }
 198
 199         conn = list_entry(v, struct rxrpc_connection, link);
 200         trans = conn->trans;
 201
 202         sprintf(lbuff, NIPQUAD_FMT":%u",
 203                 NIPQUAD(trans->local->srx.transport.sin.sin_addr),
 204                 ntohs(trans->local->srx.transport.sin.sin_port));
 205
 206         sprintf(rbuff, NIPQUAD_FMT":%u",
 207                 NIPQUAD(trans->peer->srx.transport.sin.sin_addr),
 208                 ntohs(trans->peer->srx.transport.sin.sin_port));
 209
 210         seq_printf(seq,
 211                    "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
 212                    " %s %08x %08x %08x\n",
 213                    lbuff,
 214                    rbuff,
 215                    ntohs(conn->service_id),
 216                    ntohl(conn->cid),
 217                    conn->call_counter,
 218                    conn->in_clientflag ? "Svc" : "Clt",
 219                    atomic_read(&conn->usage),
 220                    rxrpc_conn_states[conn->state],
 221                    key_serial(conn->key),
 222                    atomic_read(&conn->serial),
 223                    atomic_read(&conn->hi_serial));
 224
 225         return 0;
 226 }
 227
 228 static struct seq_operations rxrpc_connection_seq_ops = {
 229         .start  = rxrpc_connection_seq_start,
 230         .next   = rxrpc_connection_seq_next,
 231         .stop   = rxrpc_connection_seq_stop,
 232         .show   = rxrpc_connection_seq_show,
 233 };
 234
 235
 236 static int rxrpc_connection_seq_open(struct inode *inode, struct file *file)
 237 {
 238         return seq_open(file, &rxrpc_connection_seq_ops);
 239 }
 240
 241 struct file_operations rxrpc_connection_seq_fops = {
 242         .owner          = THIS_MODULE,
 243         .open           = rxrpc_connection_seq_open,
 244         .read           = seq_read,
 245         .llseek         = seq_lseek,
 246         .release        = seq_release_private,
 247 };