net/rxrpc/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 *const rxrpc_conn_states[RXRPC_CONN__NR_STATES] = {
  18         [RXRPC_CONN_UNUSED]                     = "Unused  ",
  19         [RXRPC_CONN_CLIENT]                     = "Client  ",
  20         [RXRPC_CONN_SERVICE_UNSECURED]          = "SvUnsec ",
  21         [RXRPC_CONN_SERVICE_CHALLENGING]        = "SvChall ",
  22         [RXRPC_CONN_SERVICE]                    = "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         read_lock(&rxrpc_call_lock);
  34         return seq_list_start_head(&rxrpc_calls, *_pos);
  35 }
  36
  37 static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
  38 {
  39         return seq_list_next(v, &rxrpc_calls, pos);
  40 }
  41
  42 static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
  43 {
  44         read_unlock(&rxrpc_call_lock);
  45 }
  46
  47 static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
  48 {
  49         struct rxrpc_connection *conn;
  50         struct rxrpc_call *call;
  51         char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
  52
  53         if (v == &rxrpc_calls) {
  54                 seq_puts(seq,
  55                          "Proto Local                  Remote                "
  56                          " SvID ConnID   CallID   End Use State    Abort   "
  57                          " UserID\n");
  58                 return 0;
  59         }
  60
  61         call = list_entry(v, struct rxrpc_call, link);
  62
  63         sprintf(lbuff, "%pI4:%u",
  64                 &call->local->srx.transport.sin.sin_addr,
  65                 ntohs(call->local->srx.transport.sin.sin_port));
  66
  67         conn = call->conn;
  68         if (conn)
  69                 sprintf(rbuff, "%pI4:%u",
  70                         &conn->params.peer->srx.transport.sin.sin_addr,
  71                         ntohs(conn->params.peer->srx.transport.sin.sin_port));
  72         else
  73                 strcpy(rbuff, "no_connection");
  74
  75         seq_printf(seq,
  76                    "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
  77                    " %-8.8s %08x %lx\n",
  78                    lbuff,
  79                    rbuff,
  80                    call->service_id,
  81                    call->cid,
  82                    call->call_id,
  83                    call->in_clientflag ? "Svc" : "Clt",
  84                    atomic_read(&call->usage),
  85                    rxrpc_call_states[call->state],
  86                    call->remote_abort ?: call->local_abort,
  87                    call->user_call_ID);
  88
  89         return 0;
  90 }
  91
  92 static const struct seq_operations rxrpc_call_seq_ops = {
  93         .start  = rxrpc_call_seq_start,
  94         .next   = rxrpc_call_seq_next,
  95         .stop   = rxrpc_call_seq_stop,
  96         .show   = rxrpc_call_seq_show,
  97 };
  98
  99 static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
 100 {
 101         return seq_open(file, &rxrpc_call_seq_ops);
 102 }
 103
 104 const struct file_operations rxrpc_call_seq_fops = {
 105         .owner          = THIS_MODULE,
 106         .open           = rxrpc_call_seq_open,
 107         .read           = seq_read,
 108         .llseek         = seq_lseek,
 109         .release        = seq_release,
 110 };
 111
 112 /*
 113  * generate a list of extant virtual connections in /proc/net/rxrpc_conns
 114  */
 115 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
 116 {
 117         read_lock(&rxrpc_connection_lock);
 118         return seq_list_start_head(&rxrpc_connections, *_pos);
 119 }
 120
 121 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
 122                                        loff_t *pos)
 123 {
 124         return seq_list_next(v, &rxrpc_connections, pos);
 125 }
 126
 127 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
 128 {
 129         read_unlock(&rxrpc_connection_lock);
 130 }
 131
 132 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
 133 {
 134         struct rxrpc_connection *conn;
 135         char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
 136
 137         if (v == &rxrpc_connections) {
 138                 seq_puts(seq,
 139                          "Proto Local                  Remote                "
 140                          " SvID ConnID   End Use State    Key     "
 141                          " Serial   ISerial\n"
 142                          );
 143                 return 0;
 144         }
 145
 146         conn = list_entry(v, struct rxrpc_connection, link);
 147
 148         sprintf(lbuff, "%pI4:%u",
 149                 &conn->params.local->srx.transport.sin.sin_addr,
 150                 ntohs(conn->params.local->srx.transport.sin.sin_port));
 151
 152         sprintf(rbuff, "%pI4:%u",
 153                 &conn->params.peer->srx.transport.sin.sin_addr,
 154                 ntohs(conn->params.peer->srx.transport.sin.sin_port));
 155
 156         seq_printf(seq,
 157                    "UDP   %-22.22s %-22.22s %4x %08x %s %3u"
 158                    " %s %08x %08x %08x\n",
 159                    lbuff,
 160                    rbuff,
 161                    conn->params.service_id,
 162                    conn->proto.cid,
 163                    rxrpc_conn_is_service(conn) ? "Svc" : "Clt",
 164                    atomic_read(&conn->usage),
 165                    rxrpc_conn_states[conn->state],
 166                    key_serial(conn->params.key),
 167                    atomic_read(&conn->serial),
 168                    atomic_read(&conn->hi_serial));
 169
 170         return 0;
 171 }
 172
 173 static const struct seq_operations rxrpc_connection_seq_ops = {
 174         .start  = rxrpc_connection_seq_start,
 175         .next   = rxrpc_connection_seq_next,
 176         .stop   = rxrpc_connection_seq_stop,
 177         .show   = rxrpc_connection_seq_show,
 178 };
 179
 180
 181 static int rxrpc_connection_seq_open(struct inode *inode, struct file *file)
 182 {
 183         return seq_open(file, &rxrpc_connection_seq_ops);
 184 }
 185
 186 const struct file_operations rxrpc_connection_seq_fops = {
 187         .owner          = THIS_MODULE,
 188         .open           = rxrpc_connection_seq_open,
 189         .read           = seq_read,
 190         .llseek         = seq_lseek,
 191         .release        = seq_release,
 192 };