net/core/sysctl_net_core.c

   1 /* -*- linux-c -*-
   2  * sysctl_net_core.c: sysctl interface to net core subsystem.
   3  *
   4  * Begun April 1, 1996, Mike Shaver.
   5  * Added /proc/sys/net/core directory entry (empty =) ). [MS]
   6  */
   7
   8 #include <linux/mm.h>
   9 #include <linux/sysctl.h>
  10 #include <linux/config.h>
  11 #include <linux/module.h>
  12
  13 #ifdef CONFIG_SYSCTL
  14
  15 extern int netdev_max_backlog;
  16 extern int weight_p;
  17 extern int no_cong_thresh;
  18 extern int no_cong;
  19 extern int lo_cong;
  20 extern int mod_cong;
  21 extern int netdev_fastroute;
  22 extern int net_msg_cost;
  23 extern int net_msg_burst;
  24
  25 extern __u32 sysctl_wmem_max;
  26 extern __u32 sysctl_rmem_max;
  27 extern __u32 sysctl_wmem_default;
  28 extern __u32 sysctl_rmem_default;
  29
  30 extern int sysctl_core_destroy_delay;
  31 extern int sysctl_optmem_max;
  32 extern int sysctl_somaxconn;
  33
  34 #ifdef CONFIG_NET_DIVERT
  35 extern char sysctl_divert_version[];
  36 #endif /* CONFIG_NET_DIVERT */
  37
  38 /*
  39  * This strdup() is used for creating copies of network
  40  * device names to be handed over to sysctl.
  41  */
  42
  43 char *net_sysctl_strdup(const char *s)
  44 {
  45         char *rv = kmalloc(strlen(s)+1, GFP_KERNEL);
  46         if (rv)
  47                 strcpy(rv, s);
  48         return rv;
  49 }
  50
  51 ctl_table core_table[] = {
  52 #ifdef CONFIG_NET
  53         {
  54                 .ctl_name       = NET_CORE_WMEM_MAX,
  55                 .procname       = "wmem_max",
  56                 .data           = &sysctl_wmem_max,
  57                 .maxlen         = sizeof(int),
  58                 .mode           = 0644,
  59                 .proc_handler   = &proc_dointvec
  60         },
  61         {
  62                 .ctl_name       = NET_CORE_RMEM_MAX,
  63                 .procname       = "rmem_max",
  64                 .data           = &sysctl_rmem_max,
  65                 .maxlen         = sizeof(int),
  66                 .mode           = 0644,
  67                 .proc_handler   = &proc_dointvec
  68         },
  69         {
  70                 .ctl_name       = NET_CORE_WMEM_DEFAULT,
  71                 .procname       = "wmem_default",
  72                 .data           = &sysctl_wmem_default,
  73                 .maxlen         = sizeof(int),
  74                 .mode           = 0644,
  75                 .proc_handler   = &proc_dointvec
  76         },
  77         {
  78                 .ctl_name       = NET_CORE_RMEM_DEFAULT,
  79                 .procname       = "rmem_default",
  80                 .data           = &sysctl_rmem_default,
  81                 .maxlen         = sizeof(int),
  82                 .mode           = 0644,
  83                 .proc_handler   = &proc_dointvec
  84         },
  85         {
  86                 .ctl_name       = NET_CORE_DEV_WEIGHT,
  87                 .procname       = "dev_weight",
  88                 .data           = &weight_p,
  89                 .maxlen         = sizeof(int),
  90                 .mode           = 0644,
  91                 .proc_handler   = &proc_dointvec
  92         },
  93         {
  94                 .ctl_name       = NET_CORE_MAX_BACKLOG,
  95                 .procname       = "netdev_max_backlog",
  96                 .data           = &netdev_max_backlog,
  97                 .maxlen         = sizeof(int),
  98                 .mode           = 0644,
  99                 .proc_handler   = &proc_dointvec
 100         },
 101         {
 102                 .ctl_name       = NET_CORE_NO_CONG_THRESH,
 103                 .procname       = "no_cong_thresh",
 104                 .data           = &no_cong_thresh,
 105                 .maxlen         = sizeof(int),
 106                 .mode           = 0644,
 107                 .proc_handler   = &proc_dointvec
 108         },
 109         {
 110                 .ctl_name       = NET_CORE_NO_CONG,
 111                 .procname       = "no_cong",
 112                 .data           = &no_cong,
 113                 .maxlen         = sizeof(int),
 114                 .mode           = 0644,
 115                 .proc_handler   = &proc_dointvec
 116         },
 117         {
 118                 .ctl_name       = NET_CORE_LO_CONG,
 119                 .procname       = "lo_cong",
 120                 .data           = &lo_cong,
 121                 .maxlen         = sizeof(int),
 122                 .mode           = 0644,
 123                 .proc_handler   = &proc_dointvec
 124         },
 125         {
 126                 .ctl_name       = NET_CORE_MOD_CONG,
 127                 .procname       = "mod_cong",
 128                 .data           = &mod_cong,
 129                 .maxlen         = sizeof(int),
 130                 .mode           = 0644,
 131                 .proc_handler   = &proc_dointvec
 132         },
 133         {
 134                 .ctl_name       = NET_CORE_MSG_COST,
 135                 .procname       = "message_cost",
 136                 .data           = &net_msg_cost,
 137                 .maxlen         = sizeof(int),
 138                 .mode           = 0644,
 139                 .proc_handler   = &proc_dointvec_jiffies,
 140                 .strategy       = &sysctl_jiffies,
 141         },
 142         {
 143                 .ctl_name       = NET_CORE_MSG_BURST,
 144                 .procname       = "message_burst",
 145                 .data           = &net_msg_burst,
 146                 .maxlen         = sizeof(int),
 147                 .mode           = 0644,
 148                 .proc_handler   = &proc_dointvec,
 149         },
 150         {
 151                 .ctl_name       = NET_CORE_OPTMEM_MAX,
 152                 .procname       = "optmem_max",
 153                 .data           = &sysctl_optmem_max,
 154                 .maxlen         = sizeof(int),
 155                 .mode           = 0644,
 156                 .proc_handler   = &proc_dointvec
 157         },
 158 #ifdef CONFIG_NET_DIVERT
 159         {
 160                 .ctl_name       = NET_CORE_DIVERT_VERSION,
 161                 .procname       = "divert_version",
 162                 .data           = (void *)sysctl_divert_version,
 163                 .maxlen         = 32,
 164                 .mode           = 0444,
 165                 .proc_handler   = &proc_dostring
 166         },
 167 #endif /* CONFIG_NET_DIVERT */
 168 #endif /* CONFIG_NET */
 169         {
 170                 .ctl_name       = NET_CORE_SOMAXCONN,
 171                 .procname       = "somaxconn",
 172                 .data           = &sysctl_somaxconn,
 173                 .maxlen         = sizeof(int),
 174                 .mode           = 0644,
 175                 .proc_handler   = &proc_dointvec
 176         },
 177         { .ctl_name = 0 }
 178 };
 179
 180 EXPORT_SYMBOL(net_sysctl_strdup);
 181
 182 #endif