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   1 /*
   2  *  net/dccp/sysctl.c
   3  *
   4  *  An implementation of the DCCP protocol
   5  *  Arnaldo Carvalho de Melo <acme@mandriva.com>
   6  *
   7  *      This program is free software; you can redistribute it and/or
   8  *      modify it under the terms of the GNU General Public License v2
   9  *      as published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/mm.h>
  13 #include <linux/sysctl.h>
  14 #include "dccp.h"
  15 #include "feat.h"
  16
  17 #ifndef CONFIG_SYSCTL
  18 #error This file should not be compiled without CONFIG_SYSCTL defined
  19 #endif
  20
  21 static struct ctl_table dccp_default_table[] = {
  22         {
  23                 .ctl_name       = NET_DCCP_DEFAULT_SEQ_WINDOW,
  24                 .procname       = "seq_window",
  25                 .data           = &sysctl_dccp_feat_sequence_window,
  26                 .maxlen         = sizeof(sysctl_dccp_feat_sequence_window),
  27                 .mode           = 0644,
  28                 .proc_handler   = proc_dointvec,
  29         },
  30         {
  31                 .ctl_name       = NET_DCCP_DEFAULT_RX_CCID,
  32                 .procname       = "rx_ccid",
  33                 .data           = &sysctl_dccp_feat_rx_ccid,
  34                 .maxlen         = sizeof(sysctl_dccp_feat_rx_ccid),
  35                 .mode           = 0644,
  36                 .proc_handler   = proc_dointvec,
  37         },
  38         {
  39                 .ctl_name       = NET_DCCP_DEFAULT_TX_CCID,
  40                 .procname       = "tx_ccid",
  41                 .data           = &sysctl_dccp_feat_tx_ccid,
  42                 .maxlen         = sizeof(sysctl_dccp_feat_tx_ccid),
  43                 .mode           = 0644,
  44                 .proc_handler   = proc_dointvec,
  45         },
  46         {
  47                 .ctl_name       = NET_DCCP_DEFAULT_ACK_RATIO,
  48                 .procname       = "ack_ratio",
  49                 .data           = &sysctl_dccp_feat_ack_ratio,
  50                 .maxlen         = sizeof(sysctl_dccp_feat_ack_ratio),
  51                 .mode           = 0644,
  52                 .proc_handler   = proc_dointvec,
  53         },
  54         {
  55                 .ctl_name       = NET_DCCP_DEFAULT_SEND_ACKVEC,
  56                 .procname       = "send_ackvec",
  57                 .data           = &sysctl_dccp_feat_send_ack_vector,
  58                 .maxlen         = sizeof(sysctl_dccp_feat_send_ack_vector),
  59                 .mode           = 0644,
  60                 .proc_handler   = proc_dointvec,
  61         },
  62         {
  63                 .ctl_name       = NET_DCCP_DEFAULT_SEND_NDP,
  64                 .procname       = "send_ndp",
  65                 .data           = &sysctl_dccp_feat_send_ndp_count,
  66                 .maxlen         = sizeof(sysctl_dccp_feat_send_ndp_count),
  67                 .mode           = 0644,
  68                 .proc_handler   = proc_dointvec,
  69         },
  70         {
  71                 .ctl_name       = NET_DCCP_DEFAULT_REQ_RETRIES,
  72                 .procname       = "request_retries",
  73                 .data           = &sysctl_dccp_request_retries,
  74                 .maxlen         = sizeof(sysctl_dccp_request_retries),
  75                 .mode           = 0644,
  76                 .proc_handler   = proc_dointvec,
  77         },
  78         {
  79                 .ctl_name       = NET_DCCP_DEFAULT_RETRIES1,
  80                 .procname       = "retries1",
  81                 .data           = &sysctl_dccp_retries1,
  82                 .maxlen         = sizeof(sysctl_dccp_retries1),
  83                 .mode           = 0644,
  84                 .proc_handler   = proc_dointvec,
  85         },
  86         {
  87                 .ctl_name       = NET_DCCP_DEFAULT_RETRIES2,
  88                 .procname       = "retries2",
  89                 .data           = &sysctl_dccp_retries2,
  90                 .maxlen         = sizeof(sysctl_dccp_retries2),
  91                 .mode           = 0644,
  92                 .proc_handler   = proc_dointvec,
  93         },
  94         {
  95                 .ctl_name       = NET_DCCP_DEFAULT_TX_QLEN,
  96                 .procname       = "tx_qlen",
  97                 .data           = &sysctl_dccp_tx_qlen,
  98                 .maxlen         = sizeof(sysctl_dccp_tx_qlen),
  99                 .mode           = 0644,
 100                 .proc_handler   = proc_dointvec,
 101         },
 102
 103         { .ctl_name = 0, }
 104 };
 105
 106 static struct ctl_table dccp_table[] = {
 107         {
 108                 .ctl_name       = NET_DCCP_DEFAULT,
 109                 .procname       = "default",
 110                 .mode           = 0555,
 111                 .child          = dccp_default_table,
 112         },
 113         { .ctl_name = 0, },
 114 };
 115
 116 static struct ctl_table dccp_dir_table[] = {
 117         {
 118                 .ctl_name       = NET_DCCP,
 119                 .procname       = "dccp",
 120                 .mode           = 0555,
 121                 .child          = dccp_table,
 122         },
 123         { .ctl_name = 0, },
 124 };
 125
 126 static struct ctl_table dccp_root_table[] = {
 127         {
 128                 .ctl_name       = CTL_NET,
 129                 .procname       = "net",
 130                 .mode           = 0555,
 131                 .child          = dccp_dir_table,
 132         },
 133         { .ctl_name = 0, },
 134 };
 135
 136 static struct ctl_table_header *dccp_table_header;
 137
 138 int __init dccp_sysctl_init(void)
 139 {
 140         dccp_table_header = register_sysctl_table(dccp_root_table, 1);
 141
 142         return dccp_table_header != NULL ? 0 : -ENOMEM;
 143 }
 144
 145 void dccp_sysctl_exit(void)
 146 {
 147         if (dccp_table_header != NULL) {
 148                 unregister_sysctl_table(dccp_table_header);
 149                 dccp_table_header = NULL;
 150         }
 151 }