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 *const 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         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_transport *trans;
  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         trans = call->conn->trans;
  63
  64         sprintf(lbuff, NIPQUAD_FMT":%u",
  65                 NIPQUAD(trans->local->srx.transport.sin.sin_addr),
  66                 ntohs(trans->local->srx.transport.sin.sin_port));
  67
  68         sprintf(rbuff, NIPQUAD_FMT":%u",
  69                 NIPQUAD(trans->peer->srx.transport.sin.sin_addr),
  70                 ntohs(trans->peer->srx.transport.sin.sin_port));
  71
  72         seq_printf(seq,
  73                    "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
  74                    " %-8.8s %08x %lx\n",
  75                    lbuff,
  76                    rbuff,
  77                    ntohs(call->conn->service_id),
  78                    ntohl(call->conn->cid),
  79                    ntohl(call->call_id),
  80                    call->conn->in_clientflag ? "Svc" : "Clt",
  81                    atomic_read(&call->usage),
  82                    rxrpc_call_states[call->state],
  83                    call->abort_code,
  84                    call->user_call_ID);
  85
  86         return 0;
  87 }
  88
  89 static const struct seq_operations rxrpc_call_seq_ops = {
  90         .start  = rxrpc_call_seq_start,
  91         .next   = rxrpc_call_seq_next,
  92         .stop   = rxrpc_call_seq_stop,
  93         .show   = rxrpc_call_seq_show,
  94 };
  95
  96 static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
  97 {
  98         return seq_open(file, &rxrpc_call_seq_ops);
  99 }
 100
 101 const struct file_operations rxrpc_call_seq_fops = {
 102         .owner          = THIS_MODULE,
 103         .open           = rxrpc_call_seq_open,
 104         .read           = seq_read,
 105         .llseek         = seq_lseek,
 106         .release        = seq_release_private,
 107 };
 108
 109 /*
 110  * generate a list of extant virtual connections in /proc/net/rxrpc_conns
 111  */
 112 static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
 113 {
 114         read_lock(&rxrpc_connection_lock);
 115         return seq_list_start_head(&rxrpc_connections, *_pos);
 116 }
 117
 118 static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
 119                                        loff_t *pos)
 120 {
 121         return seq_list_next(v, &rxrpc_connections, pos);
 122 }
 123
 124 static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
 125 {
 126         read_unlock(&rxrpc_connection_lock);
 127 }
 128
 129 static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
 130 {
 131         struct rxrpc_connection *conn;
 132         struct rxrpc_transport *trans;
 133         char lbuff[4 + 4 + 4 + 4 + 5 + 1], rbuff[4 + 4 + 4 + 4 + 5 + 1];
 134
 135         if (v == &rxrpc_connections) {
 136                 seq_puts(seq,
 137                          "Proto Local                  Remote                "
 138                          " SvID ConnID   Calls    End Use State    Key     "
 139                          " Serial   ISerial\n"
 140                          );
 141                 return 0;
 142         }
 143
 144         conn = list_entry(v, struct rxrpc_connection, link);
 145         trans = conn->trans;
 146
 147         sprintf(lbuff, NIPQUAD_FMT":%u",
 148                 NIPQUAD(trans->local->srx.transport.sin.sin_addr),
 149                 ntohs(trans->local->srx.transport.sin.sin_port));
 150
 151         sprintf(rbuff, NIPQUAD_FMT":%u",
 152                 NIPQUAD(trans->peer->srx.transport.sin.sin_addr),
 153                 ntohs(trans->peer->srx.transport.sin.sin_port));
 154
 155         seq_printf(seq,
 156                    "UDP   %-22.22s %-22.22s %4x %08x %08x %s %3u"
 157                    " %s %08x %08x %08x\n",
 158                    lbuff,
 159                    rbuff,
 160                    ntohs(conn->service_id),
 161                    ntohl(conn->cid),
 162                    conn->call_counter,
 163                    conn->in_clientflag ? "Svc" : "Clt",
 164                    atomic_read(&conn->usage),
 165                    rxrpc_conn_states[conn->state],
 166                    key_serial(conn->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_private,
 192 };