Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem. |
| 3 | * |
| 4 | * $Id: sysctl_net_ipv4.c,v 1.50 2001/10/20 00:00:11 davem Exp $ |
| 5 | * |
| 6 | * Begun April 1, 1996, Mike Shaver. |
| 7 | * Added /proc/sys/net/ipv4 directory entry (empty =) ). [MS] |
| 8 | */ |
| 9 | |
| 10 | #include <linux/mm.h> |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/sysctl.h> |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 13 | #include <linux/igmp.h> |
Arnaldo Carvalho de Melo | 14c8502 | 2005-12-27 02:43:12 -0200 | [diff] [blame] | 14 | #include <linux/inetdevice.h> |
Stephen Hemminger | 227b60f | 2007-10-10 17:30:46 -0700 | [diff] [blame] | 15 | #include <linux/seqlock.h> |
Pavel Emelyanov | 3e37c3f | 2007-12-05 01:41:26 -0800 | [diff] [blame] | 16 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <net/snmp.h> |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 18 | #include <net/icmp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <net/ip.h> |
| 20 | #include <net/route.h> |
| 21 | #include <net/tcp.h> |
Hideo Aoki | 95766ff | 2007-12-31 00:29:24 -0800 | [diff] [blame] | 22 | #include <net/udp.h> |
Paul Moore | 446fda4 | 2006-08-03 16:48:06 -0700 | [diff] [blame] | 23 | #include <net/cipso_ipv4.h> |
Pavel Emelyanov | 04128f2 | 2007-10-15 02:33:45 -0700 | [diff] [blame] | 24 | #include <net/inet_frag.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
Herbert Xu | 89cee8b | 2005-12-13 23:14:27 -0800 | [diff] [blame] | 26 | static int zero; |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 27 | static int tcp_retr1_max = 255; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | static int ip_local_port_range_min[] = { 1, 1 }; |
| 29 | static int ip_local_port_range_max[] = { 65535, 65535 }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
Stephen Hemminger | 227b60f | 2007-10-10 17:30:46 -0700 | [diff] [blame] | 31 | extern seqlock_t sysctl_port_range_lock; |
| 32 | extern int sysctl_local_port_range[2]; |
| 33 | |
| 34 | /* Update system visible IP port range */ |
| 35 | static void set_local_port_range(int range[2]) |
| 36 | { |
| 37 | write_seqlock(&sysctl_port_range_lock); |
| 38 | sysctl_local_port_range[0] = range[0]; |
| 39 | sysctl_local_port_range[1] = range[1]; |
| 40 | write_sequnlock(&sysctl_port_range_lock); |
| 41 | } |
| 42 | |
| 43 | /* Validate changes from /proc interface. */ |
| 44 | static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp, |
| 45 | void __user *buffer, |
| 46 | size_t *lenp, loff_t *ppos) |
| 47 | { |
| 48 | int ret; |
| 49 | int range[2] = { sysctl_local_port_range[0], |
| 50 | sysctl_local_port_range[1] }; |
| 51 | ctl_table tmp = { |
| 52 | .data = &range, |
| 53 | .maxlen = sizeof(range), |
| 54 | .mode = table->mode, |
| 55 | .extra1 = &ip_local_port_range_min, |
| 56 | .extra2 = &ip_local_port_range_max, |
| 57 | }; |
| 58 | |
| 59 | ret = proc_dointvec_minmax(&tmp, write, filp, buffer, lenp, ppos); |
| 60 | |
| 61 | if (write && ret == 0) { |
Anton Arapov | a25de53 | 2007-10-18 22:00:17 -0700 | [diff] [blame] | 62 | if (range[1] < range[0]) |
Stephen Hemminger | 227b60f | 2007-10-10 17:30:46 -0700 | [diff] [blame] | 63 | ret = -EINVAL; |
| 64 | else |
| 65 | set_local_port_range(range); |
| 66 | } |
| 67 | |
| 68 | return ret; |
| 69 | } |
| 70 | |
| 71 | /* Validate changes from sysctl interface. */ |
| 72 | static int ipv4_sysctl_local_port_range(ctl_table *table, int __user *name, |
| 73 | int nlen, void __user *oldval, |
| 74 | size_t __user *oldlenp, |
| 75 | void __user *newval, size_t newlen) |
| 76 | { |
| 77 | int ret; |
| 78 | int range[2] = { sysctl_local_port_range[0], |
| 79 | sysctl_local_port_range[1] }; |
| 80 | ctl_table tmp = { |
| 81 | .data = &range, |
| 82 | .maxlen = sizeof(range), |
| 83 | .mode = table->mode, |
| 84 | .extra1 = &ip_local_port_range_min, |
| 85 | .extra2 = &ip_local_port_range_max, |
| 86 | }; |
| 87 | |
| 88 | ret = sysctl_intvec(&tmp, name, nlen, oldval, oldlenp, newval, newlen); |
| 89 | if (ret == 0 && newval && newlen) { |
Anton Arapov | a25de53 | 2007-10-18 22:00:17 -0700 | [diff] [blame] | 90 | if (range[1] < range[0]) |
Stephen Hemminger | 227b60f | 2007-10-10 17:30:46 -0700 | [diff] [blame] | 91 | ret = -EINVAL; |
| 92 | else |
| 93 | set_local_port_range(range); |
| 94 | } |
| 95 | return ret; |
| 96 | } |
| 97 | |
| 98 | |
Stephen Hemminger | 317a76f | 2005-06-23 12:19:55 -0700 | [diff] [blame] | 99 | static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file * filp, |
| 100 | void __user *buffer, size_t *lenp, loff_t *ppos) |
| 101 | { |
| 102 | char val[TCP_CA_NAME_MAX]; |
| 103 | ctl_table tbl = { |
| 104 | .data = val, |
| 105 | .maxlen = TCP_CA_NAME_MAX, |
| 106 | }; |
| 107 | int ret; |
| 108 | |
| 109 | tcp_get_default_congestion_control(val); |
| 110 | |
| 111 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); |
| 112 | if (write && ret == 0) |
| 113 | ret = tcp_set_default_congestion_control(val); |
| 114 | return ret; |
| 115 | } |
| 116 | |
Arnaldo Carvalho de Melo | 2038073 | 2005-08-16 02:18:02 -0300 | [diff] [blame] | 117 | static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name, |
| 118 | int nlen, void __user *oldval, |
| 119 | size_t __user *oldlenp, |
Alexey Dobriyan | 1f29bcd | 2006-12-10 02:19:10 -0800 | [diff] [blame] | 120 | void __user *newval, size_t newlen) |
Stephen Hemminger | 317a76f | 2005-06-23 12:19:55 -0700 | [diff] [blame] | 121 | { |
| 122 | char val[TCP_CA_NAME_MAX]; |
| 123 | ctl_table tbl = { |
| 124 | .data = val, |
| 125 | .maxlen = TCP_CA_NAME_MAX, |
| 126 | }; |
| 127 | int ret; |
| 128 | |
| 129 | tcp_get_default_congestion_control(val); |
Alexey Dobriyan | 1f29bcd | 2006-12-10 02:19:10 -0800 | [diff] [blame] | 130 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen); |
Sam Jansen | 5487796 | 2007-11-19 23:28:21 -0800 | [diff] [blame] | 131 | if (ret == 1 && newval && newlen) |
Stephen Hemminger | 317a76f | 2005-06-23 12:19:55 -0700 | [diff] [blame] | 132 | ret = tcp_set_default_congestion_control(val); |
| 133 | return ret; |
| 134 | } |
| 135 | |
Stephen Hemminger | 3ff825b | 2006-11-09 16:32:06 -0800 | [diff] [blame] | 136 | static int proc_tcp_available_congestion_control(ctl_table *ctl, |
| 137 | int write, struct file * filp, |
| 138 | void __user *buffer, size_t *lenp, |
| 139 | loff_t *ppos) |
| 140 | { |
| 141 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; |
| 142 | int ret; |
| 143 | |
| 144 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); |
| 145 | if (!tbl.data) |
| 146 | return -ENOMEM; |
| 147 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); |
| 148 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); |
| 149 | kfree(tbl.data); |
| 150 | return ret; |
| 151 | } |
| 152 | |
Stephen Hemminger | ce7bc3b | 2006-11-09 16:35:15 -0800 | [diff] [blame] | 153 | static int proc_allowed_congestion_control(ctl_table *ctl, |
| 154 | int write, struct file * filp, |
| 155 | void __user *buffer, size_t *lenp, |
| 156 | loff_t *ppos) |
| 157 | { |
| 158 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; |
| 159 | int ret; |
| 160 | |
| 161 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); |
| 162 | if (!tbl.data) |
| 163 | return -ENOMEM; |
| 164 | |
| 165 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); |
| 166 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); |
| 167 | if (write && ret == 0) |
| 168 | ret = tcp_set_allowed_congestion_control(tbl.data); |
| 169 | kfree(tbl.data); |
| 170 | return ret; |
| 171 | } |
| 172 | |
| 173 | static int strategy_allowed_congestion_control(ctl_table *table, int __user *name, |
| 174 | int nlen, void __user *oldval, |
| 175 | size_t __user *oldlenp, |
Alexey Dobriyan | 1f29bcd | 2006-12-10 02:19:10 -0800 | [diff] [blame] | 176 | void __user *newval, |
| 177 | size_t newlen) |
Stephen Hemminger | ce7bc3b | 2006-11-09 16:35:15 -0800 | [diff] [blame] | 178 | { |
| 179 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; |
| 180 | int ret; |
| 181 | |
| 182 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); |
| 183 | if (!tbl.data) |
| 184 | return -ENOMEM; |
| 185 | |
| 186 | tcp_get_available_congestion_control(tbl.data, tbl.maxlen); |
Alexey Dobriyan | 1f29bcd | 2006-12-10 02:19:10 -0800 | [diff] [blame] | 187 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen); |
Stephen Hemminger | ce7bc3b | 2006-11-09 16:35:15 -0800 | [diff] [blame] | 188 | if (ret == 0 && newval && newlen) |
| 189 | ret = tcp_set_allowed_congestion_control(tbl.data); |
| 190 | kfree(tbl.data); |
| 191 | |
| 192 | return ret; |
| 193 | |
| 194 | } |
| 195 | |
Pavel Emelyanov | 3e37c3f | 2007-12-05 01:41:26 -0800 | [diff] [blame] | 196 | static struct ctl_table ipv4_table[] = { |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 197 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | .ctl_name = NET_IPV4_TCP_TIMESTAMPS, |
| 199 | .procname = "tcp_timestamps", |
| 200 | .data = &sysctl_tcp_timestamps, |
| 201 | .maxlen = sizeof(int), |
| 202 | .mode = 0644, |
| 203 | .proc_handler = &proc_dointvec |
| 204 | }, |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 205 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | .ctl_name = NET_IPV4_TCP_WINDOW_SCALING, |
| 207 | .procname = "tcp_window_scaling", |
| 208 | .data = &sysctl_tcp_window_scaling, |
| 209 | .maxlen = sizeof(int), |
| 210 | .mode = 0644, |
| 211 | .proc_handler = &proc_dointvec |
| 212 | }, |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 213 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | .ctl_name = NET_IPV4_TCP_SACK, |
| 215 | .procname = "tcp_sack", |
| 216 | .data = &sysctl_tcp_sack, |
| 217 | .maxlen = sizeof(int), |
| 218 | .mode = 0644, |
| 219 | .proc_handler = &proc_dointvec |
| 220 | }, |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 221 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | .ctl_name = NET_IPV4_TCP_RETRANS_COLLAPSE, |
| 223 | .procname = "tcp_retrans_collapse", |
| 224 | .data = &sysctl_tcp_retrans_collapse, |
| 225 | .maxlen = sizeof(int), |
| 226 | .mode = 0644, |
| 227 | .proc_handler = &proc_dointvec |
| 228 | }, |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 229 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | .ctl_name = NET_IPV4_DEFAULT_TTL, |
| 231 | .procname = "ip_default_ttl", |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 232 | .data = &sysctl_ip_default_ttl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | .maxlen = sizeof(int), |
| 234 | .mode = 0644, |
| 235 | .proc_handler = &ipv4_doint_and_flush, |
| 236 | .strategy = &ipv4_doint_and_flush_strategy, |
| 237 | }, |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 238 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | .ctl_name = NET_IPV4_NO_PMTU_DISC, |
| 240 | .procname = "ip_no_pmtu_disc", |
| 241 | .data = &ipv4_config.no_pmtu_disc, |
| 242 | .maxlen = sizeof(int), |
| 243 | .mode = 0644, |
| 244 | .proc_handler = &proc_dointvec |
| 245 | }, |
| 246 | { |
| 247 | .ctl_name = NET_IPV4_NONLOCAL_BIND, |
| 248 | .procname = "ip_nonlocal_bind", |
| 249 | .data = &sysctl_ip_nonlocal_bind, |
| 250 | .maxlen = sizeof(int), |
| 251 | .mode = 0644, |
| 252 | .proc_handler = &proc_dointvec |
| 253 | }, |
| 254 | { |
| 255 | .ctl_name = NET_IPV4_TCP_SYN_RETRIES, |
| 256 | .procname = "tcp_syn_retries", |
| 257 | .data = &sysctl_tcp_syn_retries, |
| 258 | .maxlen = sizeof(int), |
| 259 | .mode = 0644, |
| 260 | .proc_handler = &proc_dointvec |
| 261 | }, |
| 262 | { |
| 263 | .ctl_name = NET_TCP_SYNACK_RETRIES, |
| 264 | .procname = "tcp_synack_retries", |
| 265 | .data = &sysctl_tcp_synack_retries, |
| 266 | .maxlen = sizeof(int), |
| 267 | .mode = 0644, |
| 268 | .proc_handler = &proc_dointvec |
| 269 | }, |
| 270 | { |
| 271 | .ctl_name = NET_TCP_MAX_ORPHANS, |
| 272 | .procname = "tcp_max_orphans", |
| 273 | .data = &sysctl_tcp_max_orphans, |
| 274 | .maxlen = sizeof(int), |
| 275 | .mode = 0644, |
| 276 | .proc_handler = &proc_dointvec |
| 277 | }, |
| 278 | { |
| 279 | .ctl_name = NET_TCP_MAX_TW_BUCKETS, |
| 280 | .procname = "tcp_max_tw_buckets", |
Arnaldo Carvalho de Melo | 295ff7e | 2005-08-09 20:44:40 -0700 | [diff] [blame] | 281 | .data = &tcp_death_row.sysctl_max_tw_buckets, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | .maxlen = sizeof(int), |
| 283 | .mode = 0644, |
| 284 | .proc_handler = &proc_dointvec |
| 285 | }, |
| 286 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | .ctl_name = NET_IPV4_DYNADDR, |
| 288 | .procname = "ip_dynaddr", |
| 289 | .data = &sysctl_ip_dynaddr, |
| 290 | .maxlen = sizeof(int), |
| 291 | .mode = 0644, |
| 292 | .proc_handler = &proc_dointvec |
| 293 | }, |
| 294 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_TIME, |
| 296 | .procname = "tcp_keepalive_time", |
| 297 | .data = &sysctl_tcp_keepalive_time, |
| 298 | .maxlen = sizeof(int), |
| 299 | .mode = 0644, |
| 300 | .proc_handler = &proc_dointvec_jiffies, |
| 301 | .strategy = &sysctl_jiffies |
| 302 | }, |
| 303 | { |
| 304 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_PROBES, |
| 305 | .procname = "tcp_keepalive_probes", |
| 306 | .data = &sysctl_tcp_keepalive_probes, |
| 307 | .maxlen = sizeof(int), |
| 308 | .mode = 0644, |
| 309 | .proc_handler = &proc_dointvec |
| 310 | }, |
| 311 | { |
| 312 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_INTVL, |
| 313 | .procname = "tcp_keepalive_intvl", |
| 314 | .data = &sysctl_tcp_keepalive_intvl, |
| 315 | .maxlen = sizeof(int), |
| 316 | .mode = 0644, |
| 317 | .proc_handler = &proc_dointvec_jiffies, |
| 318 | .strategy = &sysctl_jiffies |
| 319 | }, |
| 320 | { |
| 321 | .ctl_name = NET_IPV4_TCP_RETRIES1, |
| 322 | .procname = "tcp_retries1", |
| 323 | .data = &sysctl_tcp_retries1, |
| 324 | .maxlen = sizeof(int), |
| 325 | .mode = 0644, |
| 326 | .proc_handler = &proc_dointvec_minmax, |
| 327 | .strategy = &sysctl_intvec, |
| 328 | .extra2 = &tcp_retr1_max |
| 329 | }, |
| 330 | { |
| 331 | .ctl_name = NET_IPV4_TCP_RETRIES2, |
| 332 | .procname = "tcp_retries2", |
| 333 | .data = &sysctl_tcp_retries2, |
| 334 | .maxlen = sizeof(int), |
| 335 | .mode = 0644, |
| 336 | .proc_handler = &proc_dointvec |
| 337 | }, |
| 338 | { |
| 339 | .ctl_name = NET_IPV4_TCP_FIN_TIMEOUT, |
| 340 | .procname = "tcp_fin_timeout", |
| 341 | .data = &sysctl_tcp_fin_timeout, |
| 342 | .maxlen = sizeof(int), |
| 343 | .mode = 0644, |
| 344 | .proc_handler = &proc_dointvec_jiffies, |
| 345 | .strategy = &sysctl_jiffies |
| 346 | }, |
| 347 | #ifdef CONFIG_SYN_COOKIES |
| 348 | { |
| 349 | .ctl_name = NET_TCP_SYNCOOKIES, |
| 350 | .procname = "tcp_syncookies", |
| 351 | .data = &sysctl_tcp_syncookies, |
| 352 | .maxlen = sizeof(int), |
| 353 | .mode = 0644, |
| 354 | .proc_handler = &proc_dointvec |
| 355 | }, |
| 356 | #endif |
| 357 | { |
| 358 | .ctl_name = NET_TCP_TW_RECYCLE, |
| 359 | .procname = "tcp_tw_recycle", |
Arnaldo Carvalho de Melo | 295ff7e | 2005-08-09 20:44:40 -0700 | [diff] [blame] | 360 | .data = &tcp_death_row.sysctl_tw_recycle, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | .maxlen = sizeof(int), |
| 362 | .mode = 0644, |
| 363 | .proc_handler = &proc_dointvec |
| 364 | }, |
| 365 | { |
| 366 | .ctl_name = NET_TCP_ABORT_ON_OVERFLOW, |
| 367 | .procname = "tcp_abort_on_overflow", |
| 368 | .data = &sysctl_tcp_abort_on_overflow, |
| 369 | .maxlen = sizeof(int), |
| 370 | .mode = 0644, |
| 371 | .proc_handler = &proc_dointvec |
| 372 | }, |
| 373 | { |
| 374 | .ctl_name = NET_TCP_STDURG, |
| 375 | .procname = "tcp_stdurg", |
| 376 | .data = &sysctl_tcp_stdurg, |
| 377 | .maxlen = sizeof(int), |
| 378 | .mode = 0644, |
| 379 | .proc_handler = &proc_dointvec |
| 380 | }, |
| 381 | { |
| 382 | .ctl_name = NET_TCP_RFC1337, |
| 383 | .procname = "tcp_rfc1337", |
| 384 | .data = &sysctl_tcp_rfc1337, |
| 385 | .maxlen = sizeof(int), |
| 386 | .mode = 0644, |
| 387 | .proc_handler = &proc_dointvec |
| 388 | }, |
| 389 | { |
| 390 | .ctl_name = NET_TCP_MAX_SYN_BACKLOG, |
| 391 | .procname = "tcp_max_syn_backlog", |
| 392 | .data = &sysctl_max_syn_backlog, |
| 393 | .maxlen = sizeof(int), |
| 394 | .mode = 0644, |
| 395 | .proc_handler = &proc_dointvec |
| 396 | }, |
| 397 | { |
| 398 | .ctl_name = NET_IPV4_LOCAL_PORT_RANGE, |
| 399 | .procname = "ip_local_port_range", |
| 400 | .data = &sysctl_local_port_range, |
| 401 | .maxlen = sizeof(sysctl_local_port_range), |
| 402 | .mode = 0644, |
Stephen Hemminger | 227b60f | 2007-10-10 17:30:46 -0700 | [diff] [blame] | 403 | .proc_handler = &ipv4_local_port_range, |
| 404 | .strategy = &ipv4_sysctl_local_port_range, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | }, |
| 406 | { |
| 407 | .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_ALL, |
| 408 | .procname = "icmp_echo_ignore_all", |
| 409 | .data = &sysctl_icmp_echo_ignore_all, |
| 410 | .maxlen = sizeof(int), |
| 411 | .mode = 0644, |
| 412 | .proc_handler = &proc_dointvec |
| 413 | }, |
| 414 | { |
| 415 | .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, |
| 416 | .procname = "icmp_echo_ignore_broadcasts", |
| 417 | .data = &sysctl_icmp_echo_ignore_broadcasts, |
| 418 | .maxlen = sizeof(int), |
| 419 | .mode = 0644, |
| 420 | .proc_handler = &proc_dointvec |
| 421 | }, |
| 422 | { |
| 423 | .ctl_name = NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, |
| 424 | .procname = "icmp_ignore_bogus_error_responses", |
| 425 | .data = &sysctl_icmp_ignore_bogus_error_responses, |
| 426 | .maxlen = sizeof(int), |
| 427 | .mode = 0644, |
| 428 | .proc_handler = &proc_dointvec |
| 429 | }, |
| 430 | { |
J. Simonetti | 1c2fb7f | 2005-06-13 15:19:03 -0700 | [diff] [blame] | 431 | .ctl_name = NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR, |
| 432 | .procname = "icmp_errors_use_inbound_ifaddr", |
| 433 | .data = &sysctl_icmp_errors_use_inbound_ifaddr, |
| 434 | .maxlen = sizeof(int), |
| 435 | .mode = 0644, |
| 436 | .proc_handler = &proc_dointvec |
| 437 | }, |
| 438 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | .ctl_name = NET_IPV4_ROUTE, |
| 440 | .procname = "route", |
| 441 | .maxlen = 0, |
| 442 | .mode = 0555, |
| 443 | .child = ipv4_route_table |
| 444 | }, |
| 445 | #ifdef CONFIG_IP_MULTICAST |
| 446 | { |
| 447 | .ctl_name = NET_IPV4_IGMP_MAX_MEMBERSHIPS, |
| 448 | .procname = "igmp_max_memberships", |
| 449 | .data = &sysctl_igmp_max_memberships, |
| 450 | .maxlen = sizeof(int), |
| 451 | .mode = 0644, |
| 452 | .proc_handler = &proc_dointvec |
| 453 | }, |
| 454 | |
| 455 | #endif |
| 456 | { |
| 457 | .ctl_name = NET_IPV4_IGMP_MAX_MSF, |
| 458 | .procname = "igmp_max_msf", |
| 459 | .data = &sysctl_igmp_max_msf, |
| 460 | .maxlen = sizeof(int), |
| 461 | .mode = 0644, |
| 462 | .proc_handler = &proc_dointvec |
| 463 | }, |
| 464 | { |
| 465 | .ctl_name = NET_IPV4_INET_PEER_THRESHOLD, |
| 466 | .procname = "inet_peer_threshold", |
| 467 | .data = &inet_peer_threshold, |
| 468 | .maxlen = sizeof(int), |
| 469 | .mode = 0644, |
| 470 | .proc_handler = &proc_dointvec |
| 471 | }, |
| 472 | { |
| 473 | .ctl_name = NET_IPV4_INET_PEER_MINTTL, |
| 474 | .procname = "inet_peer_minttl", |
| 475 | .data = &inet_peer_minttl, |
| 476 | .maxlen = sizeof(int), |
| 477 | .mode = 0644, |
| 478 | .proc_handler = &proc_dointvec_jiffies, |
| 479 | .strategy = &sysctl_jiffies |
| 480 | }, |
| 481 | { |
| 482 | .ctl_name = NET_IPV4_INET_PEER_MAXTTL, |
| 483 | .procname = "inet_peer_maxttl", |
| 484 | .data = &inet_peer_maxttl, |
| 485 | .maxlen = sizeof(int), |
| 486 | .mode = 0644, |
| 487 | .proc_handler = &proc_dointvec_jiffies, |
| 488 | .strategy = &sysctl_jiffies |
| 489 | }, |
| 490 | { |
| 491 | .ctl_name = NET_IPV4_INET_PEER_GC_MINTIME, |
| 492 | .procname = "inet_peer_gc_mintime", |
| 493 | .data = &inet_peer_gc_mintime, |
| 494 | .maxlen = sizeof(int), |
| 495 | .mode = 0644, |
| 496 | .proc_handler = &proc_dointvec_jiffies, |
| 497 | .strategy = &sysctl_jiffies |
| 498 | }, |
| 499 | { |
| 500 | .ctl_name = NET_IPV4_INET_PEER_GC_MAXTIME, |
| 501 | .procname = "inet_peer_gc_maxtime", |
| 502 | .data = &inet_peer_gc_maxtime, |
| 503 | .maxlen = sizeof(int), |
| 504 | .mode = 0644, |
| 505 | .proc_handler = &proc_dointvec_jiffies, |
| 506 | .strategy = &sysctl_jiffies |
| 507 | }, |
| 508 | { |
| 509 | .ctl_name = NET_TCP_ORPHAN_RETRIES, |
| 510 | .procname = "tcp_orphan_retries", |
| 511 | .data = &sysctl_tcp_orphan_retries, |
| 512 | .maxlen = sizeof(int), |
| 513 | .mode = 0644, |
| 514 | .proc_handler = &proc_dointvec |
| 515 | }, |
| 516 | { |
| 517 | .ctl_name = NET_TCP_FACK, |
| 518 | .procname = "tcp_fack", |
| 519 | .data = &sysctl_tcp_fack, |
| 520 | .maxlen = sizeof(int), |
| 521 | .mode = 0644, |
| 522 | .proc_handler = &proc_dointvec |
| 523 | }, |
| 524 | { |
| 525 | .ctl_name = NET_TCP_REORDERING, |
| 526 | .procname = "tcp_reordering", |
| 527 | .data = &sysctl_tcp_reordering, |
| 528 | .maxlen = sizeof(int), |
| 529 | .mode = 0644, |
| 530 | .proc_handler = &proc_dointvec |
| 531 | }, |
| 532 | { |
| 533 | .ctl_name = NET_TCP_ECN, |
| 534 | .procname = "tcp_ecn", |
| 535 | .data = &sysctl_tcp_ecn, |
| 536 | .maxlen = sizeof(int), |
| 537 | .mode = 0644, |
| 538 | .proc_handler = &proc_dointvec |
| 539 | }, |
| 540 | { |
| 541 | .ctl_name = NET_TCP_DSACK, |
| 542 | .procname = "tcp_dsack", |
| 543 | .data = &sysctl_tcp_dsack, |
| 544 | .maxlen = sizeof(int), |
| 545 | .mode = 0644, |
| 546 | .proc_handler = &proc_dointvec |
| 547 | }, |
| 548 | { |
| 549 | .ctl_name = NET_TCP_MEM, |
| 550 | .procname = "tcp_mem", |
| 551 | .data = &sysctl_tcp_mem, |
| 552 | .maxlen = sizeof(sysctl_tcp_mem), |
| 553 | .mode = 0644, |
| 554 | .proc_handler = &proc_dointvec |
| 555 | }, |
| 556 | { |
| 557 | .ctl_name = NET_TCP_WMEM, |
| 558 | .procname = "tcp_wmem", |
| 559 | .data = &sysctl_tcp_wmem, |
| 560 | .maxlen = sizeof(sysctl_tcp_wmem), |
| 561 | .mode = 0644, |
| 562 | .proc_handler = &proc_dointvec |
| 563 | }, |
| 564 | { |
| 565 | .ctl_name = NET_TCP_RMEM, |
| 566 | .procname = "tcp_rmem", |
| 567 | .data = &sysctl_tcp_rmem, |
| 568 | .maxlen = sizeof(sysctl_tcp_rmem), |
| 569 | .mode = 0644, |
| 570 | .proc_handler = &proc_dointvec |
| 571 | }, |
| 572 | { |
| 573 | .ctl_name = NET_TCP_APP_WIN, |
| 574 | .procname = "tcp_app_win", |
| 575 | .data = &sysctl_tcp_app_win, |
| 576 | .maxlen = sizeof(int), |
| 577 | .mode = 0644, |
| 578 | .proc_handler = &proc_dointvec |
| 579 | }, |
| 580 | { |
| 581 | .ctl_name = NET_TCP_ADV_WIN_SCALE, |
| 582 | .procname = "tcp_adv_win_scale", |
| 583 | .data = &sysctl_tcp_adv_win_scale, |
| 584 | .maxlen = sizeof(int), |
| 585 | .mode = 0644, |
| 586 | .proc_handler = &proc_dointvec |
| 587 | }, |
| 588 | { |
| 589 | .ctl_name = NET_IPV4_ICMP_RATELIMIT, |
| 590 | .procname = "icmp_ratelimit", |
| 591 | .data = &sysctl_icmp_ratelimit, |
| 592 | .maxlen = sizeof(int), |
| 593 | .mode = 0644, |
| 594 | .proc_handler = &proc_dointvec |
| 595 | }, |
| 596 | { |
| 597 | .ctl_name = NET_IPV4_ICMP_RATEMASK, |
| 598 | .procname = "icmp_ratemask", |
| 599 | .data = &sysctl_icmp_ratemask, |
| 600 | .maxlen = sizeof(int), |
| 601 | .mode = 0644, |
| 602 | .proc_handler = &proc_dointvec |
| 603 | }, |
| 604 | { |
| 605 | .ctl_name = NET_TCP_TW_REUSE, |
| 606 | .procname = "tcp_tw_reuse", |
| 607 | .data = &sysctl_tcp_tw_reuse, |
| 608 | .maxlen = sizeof(int), |
| 609 | .mode = 0644, |
| 610 | .proc_handler = &proc_dointvec |
| 611 | }, |
| 612 | { |
| 613 | .ctl_name = NET_TCP_FRTO, |
| 614 | .procname = "tcp_frto", |
| 615 | .data = &sysctl_tcp_frto, |
| 616 | .maxlen = sizeof(int), |
| 617 | .mode = 0644, |
| 618 | .proc_handler = &proc_dointvec |
| 619 | }, |
| 620 | { |
Ilpo Järvinen | 3cfe3ba | 2007-02-27 10:09:49 -0800 | [diff] [blame] | 621 | .ctl_name = NET_TCP_FRTO_RESPONSE, |
| 622 | .procname = "tcp_frto_response", |
| 623 | .data = &sysctl_tcp_frto_response, |
| 624 | .maxlen = sizeof(int), |
| 625 | .mode = 0644, |
| 626 | .proc_handler = &proc_dointvec |
| 627 | }, |
| 628 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | .ctl_name = NET_TCP_LOW_LATENCY, |
| 630 | .procname = "tcp_low_latency", |
| 631 | .data = &sysctl_tcp_low_latency, |
| 632 | .maxlen = sizeof(int), |
| 633 | .mode = 0644, |
| 634 | .proc_handler = &proc_dointvec |
| 635 | }, |
| 636 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | .ctl_name = NET_TCP_NO_METRICS_SAVE, |
| 638 | .procname = "tcp_no_metrics_save", |
| 639 | .data = &sysctl_tcp_nometrics_save, |
| 640 | .maxlen = sizeof(int), |
| 641 | .mode = 0644, |
| 642 | .proc_handler = &proc_dointvec, |
| 643 | }, |
| 644 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | .ctl_name = NET_TCP_MODERATE_RCVBUF, |
| 646 | .procname = "tcp_moderate_rcvbuf", |
| 647 | .data = &sysctl_tcp_moderate_rcvbuf, |
| 648 | .maxlen = sizeof(int), |
| 649 | .mode = 0644, |
| 650 | .proc_handler = &proc_dointvec, |
| 651 | }, |
| 652 | { |
| 653 | .ctl_name = NET_TCP_TSO_WIN_DIVISOR, |
| 654 | .procname = "tcp_tso_win_divisor", |
| 655 | .data = &sysctl_tcp_tso_win_divisor, |
| 656 | .maxlen = sizeof(int), |
| 657 | .mode = 0644, |
| 658 | .proc_handler = &proc_dointvec, |
| 659 | }, |
| 660 | { |
Stephen Hemminger | 317a76f | 2005-06-23 12:19:55 -0700 | [diff] [blame] | 661 | .ctl_name = NET_TCP_CONG_CONTROL, |
| 662 | .procname = "tcp_congestion_control", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | .mode = 0644, |
Stephen Hemminger | 317a76f | 2005-06-23 12:19:55 -0700 | [diff] [blame] | 664 | .maxlen = TCP_CA_NAME_MAX, |
| 665 | .proc_handler = &proc_tcp_congestion_control, |
| 666 | .strategy = &sysctl_tcp_congestion_control, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | }, |
Stephen Hemminger | 9772efb | 2005-11-10 17:09:53 -0800 | [diff] [blame] | 668 | { |
| 669 | .ctl_name = NET_TCP_ABC, |
| 670 | .procname = "tcp_abc", |
| 671 | .data = &sysctl_tcp_abc, |
| 672 | .maxlen = sizeof(int), |
| 673 | .mode = 0644, |
| 674 | .proc_handler = &proc_dointvec, |
| 675 | }, |
John Heffner | 5d424d5 | 2006-03-20 17:53:41 -0800 | [diff] [blame] | 676 | { |
| 677 | .ctl_name = NET_TCP_MTU_PROBING, |
| 678 | .procname = "tcp_mtu_probing", |
| 679 | .data = &sysctl_tcp_mtu_probing, |
| 680 | .maxlen = sizeof(int), |
| 681 | .mode = 0644, |
| 682 | .proc_handler = &proc_dointvec, |
| 683 | }, |
| 684 | { |
| 685 | .ctl_name = NET_TCP_BASE_MSS, |
| 686 | .procname = "tcp_base_mss", |
| 687 | .data = &sysctl_tcp_base_mss, |
| 688 | .maxlen = sizeof(int), |
| 689 | .mode = 0644, |
| 690 | .proc_handler = &proc_dointvec, |
| 691 | }, |
YOSHIFUJI Hideaki | e905a9e | 2007-02-09 23:24:47 +0900 | [diff] [blame] | 692 | { |
Rick Jones | 15d99e0 | 2006-03-20 22:40:29 -0800 | [diff] [blame] | 693 | .ctl_name = NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS, |
| 694 | .procname = "tcp_workaround_signed_windows", |
| 695 | .data = &sysctl_tcp_workaround_signed_windows, |
| 696 | .maxlen = sizeof(int), |
| 697 | .mode = 0644, |
| 698 | .proc_handler = &proc_dointvec |
| 699 | }, |
Chris Leech | 9593782 | 2006-05-23 18:02:55 -0700 | [diff] [blame] | 700 | #ifdef CONFIG_NET_DMA |
| 701 | { |
| 702 | .ctl_name = NET_TCP_DMA_COPYBREAK, |
| 703 | .procname = "tcp_dma_copybreak", |
| 704 | .data = &sysctl_tcp_dma_copybreak, |
| 705 | .maxlen = sizeof(int), |
| 706 | .mode = 0644, |
| 707 | .proc_handler = &proc_dointvec |
| 708 | }, |
| 709 | #endif |
David S. Miller | 35089bb | 2006-06-13 22:33:04 -0700 | [diff] [blame] | 710 | { |
| 711 | .ctl_name = NET_TCP_SLOW_START_AFTER_IDLE, |
| 712 | .procname = "tcp_slow_start_after_idle", |
| 713 | .data = &sysctl_tcp_slow_start_after_idle, |
| 714 | .maxlen = sizeof(int), |
| 715 | .mode = 0644, |
| 716 | .proc_handler = &proc_dointvec |
| 717 | }, |
Paul Moore | 446fda4 | 2006-08-03 16:48:06 -0700 | [diff] [blame] | 718 | #ifdef CONFIG_NETLABEL |
| 719 | { |
| 720 | .ctl_name = NET_CIPSOV4_CACHE_ENABLE, |
| 721 | .procname = "cipso_cache_enable", |
| 722 | .data = &cipso_v4_cache_enabled, |
| 723 | .maxlen = sizeof(int), |
| 724 | .mode = 0644, |
| 725 | .proc_handler = &proc_dointvec, |
| 726 | }, |
| 727 | { |
| 728 | .ctl_name = NET_CIPSOV4_CACHE_BUCKET_SIZE, |
| 729 | .procname = "cipso_cache_bucket_size", |
| 730 | .data = &cipso_v4_cache_bucketsize, |
| 731 | .maxlen = sizeof(int), |
| 732 | .mode = 0644, |
| 733 | .proc_handler = &proc_dointvec, |
| 734 | }, |
| 735 | { |
| 736 | .ctl_name = NET_CIPSOV4_RBM_OPTFMT, |
| 737 | .procname = "cipso_rbm_optfmt", |
| 738 | .data = &cipso_v4_rbm_optfmt, |
| 739 | .maxlen = sizeof(int), |
| 740 | .mode = 0644, |
| 741 | .proc_handler = &proc_dointvec, |
| 742 | }, |
| 743 | { |
| 744 | .ctl_name = NET_CIPSOV4_RBM_STRICTVALID, |
| 745 | .procname = "cipso_rbm_strictvalid", |
| 746 | .data = &cipso_v4_rbm_strictvalid, |
| 747 | .maxlen = sizeof(int), |
| 748 | .mode = 0644, |
| 749 | .proc_handler = &proc_dointvec, |
| 750 | }, |
| 751 | #endif /* CONFIG_NETLABEL */ |
Stephen Hemminger | 3ff825b | 2006-11-09 16:32:06 -0800 | [diff] [blame] | 752 | { |
Stephen Hemminger | 3ff825b | 2006-11-09 16:32:06 -0800 | [diff] [blame] | 753 | .procname = "tcp_available_congestion_control", |
| 754 | .maxlen = TCP_CA_BUF_MAX, |
| 755 | .mode = 0444, |
| 756 | .proc_handler = &proc_tcp_available_congestion_control, |
| 757 | }, |
Stephen Hemminger | ce7bc3b | 2006-11-09 16:35:15 -0800 | [diff] [blame] | 758 | { |
| 759 | .ctl_name = NET_TCP_ALLOWED_CONG_CONTROL, |
| 760 | .procname = "tcp_allowed_congestion_control", |
| 761 | .maxlen = TCP_CA_BUF_MAX, |
| 762 | .mode = 0644, |
| 763 | .proc_handler = &proc_allowed_congestion_control, |
| 764 | .strategy = &strategy_allowed_congestion_control, |
| 765 | }, |
John Heffner | 886236c | 2007-03-25 19:21:45 -0700 | [diff] [blame] | 766 | { |
| 767 | .ctl_name = NET_TCP_MAX_SSTHRESH, |
| 768 | .procname = "tcp_max_ssthresh", |
| 769 | .data = &sysctl_tcp_max_ssthresh, |
| 770 | .maxlen = sizeof(int), |
| 771 | .mode = 0644, |
| 772 | .proc_handler = &proc_dointvec, |
| 773 | }, |
Hideo Aoki | 95766ff | 2007-12-31 00:29:24 -0800 | [diff] [blame] | 774 | { |
| 775 | .ctl_name = CTL_UNNUMBERED, |
| 776 | .procname = "udp_mem", |
| 777 | .data = &sysctl_udp_mem, |
| 778 | .maxlen = sizeof(sysctl_udp_mem), |
| 779 | .mode = 0644, |
| 780 | .proc_handler = &proc_dointvec_minmax, |
| 781 | .strategy = &sysctl_intvec, |
| 782 | .extra1 = &zero |
| 783 | }, |
| 784 | { |
| 785 | .ctl_name = CTL_UNNUMBERED, |
| 786 | .procname = "udp_rmem_min", |
| 787 | .data = &sysctl_udp_rmem_min, |
| 788 | .maxlen = sizeof(sysctl_udp_rmem_min), |
| 789 | .mode = 0644, |
| 790 | .proc_handler = &proc_dointvec_minmax, |
| 791 | .strategy = &sysctl_intvec, |
| 792 | .extra1 = &zero |
| 793 | }, |
| 794 | { |
| 795 | .ctl_name = CTL_UNNUMBERED, |
| 796 | .procname = "udp_wmem_min", |
| 797 | .data = &sysctl_udp_wmem_min, |
| 798 | .maxlen = sizeof(sysctl_udp_wmem_min), |
| 799 | .mode = 0644, |
| 800 | .proc_handler = &proc_dointvec_minmax, |
| 801 | .strategy = &sysctl_intvec, |
| 802 | .extra1 = &zero |
| 803 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | { .ctl_name = 0 } |
| 805 | }; |
Pavel Emelyanov | 3e37c3f | 2007-12-05 01:41:26 -0800 | [diff] [blame] | 806 | |
Pavel Emelyanov | 3d7cc2b | 2008-01-09 00:33:11 -0800 | [diff] [blame] | 807 | struct ctl_path net_ipv4_ctl_path[] = { |
Pavel Emelyanov | 3e37c3f | 2007-12-05 01:41:26 -0800 | [diff] [blame] | 808 | { .procname = "net", .ctl_name = CTL_NET, }, |
| 809 | { .procname = "ipv4", .ctl_name = NET_IPV4, }, |
| 810 | { }, |
| 811 | }; |
Pavel Emelyanov | 3d7cc2b | 2008-01-09 00:33:11 -0800 | [diff] [blame] | 812 | EXPORT_SYMBOL_GPL(net_ipv4_ctl_path); |
Pavel Emelyanov | 3e37c3f | 2007-12-05 01:41:26 -0800 | [diff] [blame] | 813 | |
| 814 | static __init int sysctl_ipv4_init(void) |
| 815 | { |
| 816 | struct ctl_table_header *hdr; |
| 817 | |
Pavel Emelyanov | 3d7cc2b | 2008-01-09 00:33:11 -0800 | [diff] [blame] | 818 | hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table); |
Pavel Emelyanov | 3e37c3f | 2007-12-05 01:41:26 -0800 | [diff] [blame] | 819 | return hdr == NULL ? -ENOMEM : 0; |
| 820 | } |
| 821 | |
| 822 | __initcall(sysctl_ipv4_init); |