Commit | Line | Data |
---|---|---|
1da177e4 LT |
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> | |
20380731 | 13 | #include <linux/igmp.h> |
14c85021 | 14 | #include <linux/inetdevice.h> |
227b60f5 | 15 | #include <linux/seqlock.h> |
1da177e4 | 16 | #include <net/snmp.h> |
20380731 | 17 | #include <net/icmp.h> |
1da177e4 LT |
18 | #include <net/ip.h> |
19 | #include <net/route.h> | |
20 | #include <net/tcp.h> | |
446fda4f | 21 | #include <net/cipso_ipv4.h> |
04128f23 | 22 | #include <net/inet_frag.h> |
1da177e4 LT |
23 | |
24 | /* From af_inet.c */ | |
25 | extern int sysctl_ip_nonlocal_bind; | |
26 | ||
1da177e4 | 27 | #ifdef CONFIG_SYSCTL |
89cee8b1 | 28 | static int zero; |
e905a9ed | 29 | static int tcp_retr1_max = 255; |
1da177e4 LT |
30 | static int ip_local_port_range_min[] = { 1, 1 }; |
31 | static int ip_local_port_range_max[] = { 65535, 65535 }; | |
32 | #endif | |
33 | ||
34 | struct ipv4_config ipv4_config; | |
35 | ||
1da177e4 LT |
36 | #ifdef CONFIG_SYSCTL |
37 | ||
38 | static | |
39 | int ipv4_sysctl_forward(ctl_table *ctl, int write, struct file * filp, | |
40 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
41 | { | |
42f811b8 | 42 | int val = IPV4_DEVCONF_ALL(FORWARDING); |
1da177e4 LT |
43 | int ret; |
44 | ||
45 | ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); | |
46 | ||
42f811b8 | 47 | if (write && IPV4_DEVCONF_ALL(FORWARDING) != val) |
1da177e4 LT |
48 | inet_forward_change(); |
49 | ||
50 | return ret; | |
51 | } | |
52 | ||
53 | static int ipv4_sysctl_forward_strategy(ctl_table *table, | |
54 | int __user *name, int nlen, | |
55 | void __user *oldval, size_t __user *oldlenp, | |
1f29bcd7 | 56 | void __user *newval, size_t newlen) |
1da177e4 LT |
57 | { |
58 | int *valp = table->data; | |
59 | int new; | |
60 | ||
61 | if (!newval || !newlen) | |
62 | return 0; | |
63 | ||
64 | if (newlen != sizeof(int)) | |
65 | return -EINVAL; | |
66 | ||
67 | if (get_user(new, (int __user *)newval)) | |
68 | return -EFAULT; | |
69 | ||
70 | if (new == *valp) | |
71 | return 0; | |
72 | ||
73 | if (oldval && oldlenp) { | |
74 | size_t len; | |
75 | ||
76 | if (get_user(len, oldlenp)) | |
77 | return -EFAULT; | |
78 | ||
79 | if (len) { | |
80 | if (len > table->maxlen) | |
81 | len = table->maxlen; | |
82 | if (copy_to_user(oldval, valp, len)) | |
83 | return -EFAULT; | |
84 | if (put_user(len, oldlenp)) | |
85 | return -EFAULT; | |
86 | } | |
87 | } | |
88 | ||
89 | *valp = new; | |
90 | inet_forward_change(); | |
91 | return 1; | |
92 | } | |
93 | ||
227b60f5 SH |
94 | extern seqlock_t sysctl_port_range_lock; |
95 | extern int sysctl_local_port_range[2]; | |
96 | ||
97 | /* Update system visible IP port range */ | |
98 | static void set_local_port_range(int range[2]) | |
99 | { | |
100 | write_seqlock(&sysctl_port_range_lock); | |
101 | sysctl_local_port_range[0] = range[0]; | |
102 | sysctl_local_port_range[1] = range[1]; | |
103 | write_sequnlock(&sysctl_port_range_lock); | |
104 | } | |
105 | ||
106 | /* Validate changes from /proc interface. */ | |
107 | static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp, | |
108 | void __user *buffer, | |
109 | size_t *lenp, loff_t *ppos) | |
110 | { | |
111 | int ret; | |
112 | int range[2] = { sysctl_local_port_range[0], | |
113 | sysctl_local_port_range[1] }; | |
114 | ctl_table tmp = { | |
115 | .data = &range, | |
116 | .maxlen = sizeof(range), | |
117 | .mode = table->mode, | |
118 | .extra1 = &ip_local_port_range_min, | |
119 | .extra2 = &ip_local_port_range_max, | |
120 | }; | |
121 | ||
122 | ret = proc_dointvec_minmax(&tmp, write, filp, buffer, lenp, ppos); | |
123 | ||
124 | if (write && ret == 0) { | |
a25de534 | 125 | if (range[1] < range[0]) |
227b60f5 SH |
126 | ret = -EINVAL; |
127 | else | |
128 | set_local_port_range(range); | |
129 | } | |
130 | ||
131 | return ret; | |
132 | } | |
133 | ||
134 | /* Validate changes from sysctl interface. */ | |
135 | static int ipv4_sysctl_local_port_range(ctl_table *table, int __user *name, | |
136 | int nlen, void __user *oldval, | |
137 | size_t __user *oldlenp, | |
138 | void __user *newval, size_t newlen) | |
139 | { | |
140 | int ret; | |
141 | int range[2] = { sysctl_local_port_range[0], | |
142 | sysctl_local_port_range[1] }; | |
143 | ctl_table tmp = { | |
144 | .data = &range, | |
145 | .maxlen = sizeof(range), | |
146 | .mode = table->mode, | |
147 | .extra1 = &ip_local_port_range_min, | |
148 | .extra2 = &ip_local_port_range_max, | |
149 | }; | |
150 | ||
151 | ret = sysctl_intvec(&tmp, name, nlen, oldval, oldlenp, newval, newlen); | |
152 | if (ret == 0 && newval && newlen) { | |
a25de534 | 153 | if (range[1] < range[0]) |
227b60f5 SH |
154 | ret = -EINVAL; |
155 | else | |
156 | set_local_port_range(range); | |
157 | } | |
158 | return ret; | |
159 | } | |
160 | ||
161 | ||
317a76f9 SH |
162 | static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file * filp, |
163 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
164 | { | |
165 | char val[TCP_CA_NAME_MAX]; | |
166 | ctl_table tbl = { | |
167 | .data = val, | |
168 | .maxlen = TCP_CA_NAME_MAX, | |
169 | }; | |
170 | int ret; | |
171 | ||
172 | tcp_get_default_congestion_control(val); | |
173 | ||
174 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); | |
175 | if (write && ret == 0) | |
176 | ret = tcp_set_default_congestion_control(val); | |
177 | return ret; | |
178 | } | |
179 | ||
20380731 ACM |
180 | static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name, |
181 | int nlen, void __user *oldval, | |
182 | size_t __user *oldlenp, | |
1f29bcd7 | 183 | void __user *newval, size_t newlen) |
317a76f9 SH |
184 | { |
185 | char val[TCP_CA_NAME_MAX]; | |
186 | ctl_table tbl = { | |
187 | .data = val, | |
188 | .maxlen = TCP_CA_NAME_MAX, | |
189 | }; | |
190 | int ret; | |
191 | ||
192 | tcp_get_default_congestion_control(val); | |
1f29bcd7 | 193 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen); |
317a76f9 SH |
194 | if (ret == 0 && newval && newlen) |
195 | ret = tcp_set_default_congestion_control(val); | |
196 | return ret; | |
197 | } | |
198 | ||
3ff825b2 SH |
199 | static int proc_tcp_available_congestion_control(ctl_table *ctl, |
200 | int write, struct file * filp, | |
201 | void __user *buffer, size_t *lenp, | |
202 | loff_t *ppos) | |
203 | { | |
204 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; | |
205 | int ret; | |
206 | ||
207 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
208 | if (!tbl.data) | |
209 | return -ENOMEM; | |
210 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); | |
211 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); | |
212 | kfree(tbl.data); | |
213 | return ret; | |
214 | } | |
215 | ||
ce7bc3bf SH |
216 | static int proc_allowed_congestion_control(ctl_table *ctl, |
217 | int write, struct file * filp, | |
218 | void __user *buffer, size_t *lenp, | |
219 | loff_t *ppos) | |
220 | { | |
221 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; | |
222 | int ret; | |
223 | ||
224 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
225 | if (!tbl.data) | |
226 | return -ENOMEM; | |
227 | ||
228 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); | |
229 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); | |
230 | if (write && ret == 0) | |
231 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
232 | kfree(tbl.data); | |
233 | return ret; | |
234 | } | |
235 | ||
236 | static int strategy_allowed_congestion_control(ctl_table *table, int __user *name, | |
237 | int nlen, void __user *oldval, | |
238 | size_t __user *oldlenp, | |
1f29bcd7 AD |
239 | void __user *newval, |
240 | size_t newlen) | |
ce7bc3bf SH |
241 | { |
242 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; | |
243 | int ret; | |
244 | ||
245 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
246 | if (!tbl.data) | |
247 | return -ENOMEM; | |
248 | ||
249 | tcp_get_available_congestion_control(tbl.data, tbl.maxlen); | |
1f29bcd7 | 250 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen); |
ce7bc3bf SH |
251 | if (ret == 0 && newval && newlen) |
252 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
253 | kfree(tbl.data); | |
254 | ||
255 | return ret; | |
256 | ||
257 | } | |
258 | ||
1da177e4 | 259 | ctl_table ipv4_table[] = { |
e905a9ed | 260 | { |
1da177e4 LT |
261 | .ctl_name = NET_IPV4_TCP_TIMESTAMPS, |
262 | .procname = "tcp_timestamps", | |
263 | .data = &sysctl_tcp_timestamps, | |
264 | .maxlen = sizeof(int), | |
265 | .mode = 0644, | |
266 | .proc_handler = &proc_dointvec | |
267 | }, | |
e905a9ed | 268 | { |
1da177e4 LT |
269 | .ctl_name = NET_IPV4_TCP_WINDOW_SCALING, |
270 | .procname = "tcp_window_scaling", | |
271 | .data = &sysctl_tcp_window_scaling, | |
272 | .maxlen = sizeof(int), | |
273 | .mode = 0644, | |
274 | .proc_handler = &proc_dointvec | |
275 | }, | |
e905a9ed | 276 | { |
1da177e4 LT |
277 | .ctl_name = NET_IPV4_TCP_SACK, |
278 | .procname = "tcp_sack", | |
279 | .data = &sysctl_tcp_sack, | |
280 | .maxlen = sizeof(int), | |
281 | .mode = 0644, | |
282 | .proc_handler = &proc_dointvec | |
283 | }, | |
e905a9ed | 284 | { |
1da177e4 LT |
285 | .ctl_name = NET_IPV4_TCP_RETRANS_COLLAPSE, |
286 | .procname = "tcp_retrans_collapse", | |
287 | .data = &sysctl_tcp_retrans_collapse, | |
288 | .maxlen = sizeof(int), | |
289 | .mode = 0644, | |
290 | .proc_handler = &proc_dointvec | |
291 | }, | |
e905a9ed | 292 | { |
1da177e4 LT |
293 | .ctl_name = NET_IPV4_FORWARD, |
294 | .procname = "ip_forward", | |
42f811b8 | 295 | .data = &IPV4_DEVCONF_ALL(FORWARDING), |
1da177e4 LT |
296 | .maxlen = sizeof(int), |
297 | .mode = 0644, | |
298 | .proc_handler = &ipv4_sysctl_forward, | |
299 | .strategy = &ipv4_sysctl_forward_strategy | |
300 | }, | |
e905a9ed | 301 | { |
1da177e4 LT |
302 | .ctl_name = NET_IPV4_DEFAULT_TTL, |
303 | .procname = "ip_default_ttl", | |
e905a9ed | 304 | .data = &sysctl_ip_default_ttl, |
1da177e4 LT |
305 | .maxlen = sizeof(int), |
306 | .mode = 0644, | |
307 | .proc_handler = &ipv4_doint_and_flush, | |
308 | .strategy = &ipv4_doint_and_flush_strategy, | |
309 | }, | |
e905a9ed | 310 | { |
1da177e4 LT |
311 | .ctl_name = NET_IPV4_NO_PMTU_DISC, |
312 | .procname = "ip_no_pmtu_disc", | |
313 | .data = &ipv4_config.no_pmtu_disc, | |
314 | .maxlen = sizeof(int), | |
315 | .mode = 0644, | |
316 | .proc_handler = &proc_dointvec | |
317 | }, | |
318 | { | |
319 | .ctl_name = NET_IPV4_NONLOCAL_BIND, | |
320 | .procname = "ip_nonlocal_bind", | |
321 | .data = &sysctl_ip_nonlocal_bind, | |
322 | .maxlen = sizeof(int), | |
323 | .mode = 0644, | |
324 | .proc_handler = &proc_dointvec | |
325 | }, | |
326 | { | |
327 | .ctl_name = NET_IPV4_TCP_SYN_RETRIES, | |
328 | .procname = "tcp_syn_retries", | |
329 | .data = &sysctl_tcp_syn_retries, | |
330 | .maxlen = sizeof(int), | |
331 | .mode = 0644, | |
332 | .proc_handler = &proc_dointvec | |
333 | }, | |
334 | { | |
335 | .ctl_name = NET_TCP_SYNACK_RETRIES, | |
336 | .procname = "tcp_synack_retries", | |
337 | .data = &sysctl_tcp_synack_retries, | |
338 | .maxlen = sizeof(int), | |
339 | .mode = 0644, | |
340 | .proc_handler = &proc_dointvec | |
341 | }, | |
342 | { | |
343 | .ctl_name = NET_TCP_MAX_ORPHANS, | |
344 | .procname = "tcp_max_orphans", | |
345 | .data = &sysctl_tcp_max_orphans, | |
346 | .maxlen = sizeof(int), | |
347 | .mode = 0644, | |
348 | .proc_handler = &proc_dointvec | |
349 | }, | |
350 | { | |
351 | .ctl_name = NET_TCP_MAX_TW_BUCKETS, | |
352 | .procname = "tcp_max_tw_buckets", | |
295ff7ed | 353 | .data = &tcp_death_row.sysctl_max_tw_buckets, |
1da177e4 LT |
354 | .maxlen = sizeof(int), |
355 | .mode = 0644, | |
356 | .proc_handler = &proc_dointvec | |
357 | }, | |
358 | { | |
359 | .ctl_name = NET_IPV4_IPFRAG_HIGH_THRESH, | |
360 | .procname = "ipfrag_high_thresh", | |
04128f23 | 361 | .data = &ip4_frags_ctl.high_thresh, |
1da177e4 LT |
362 | .maxlen = sizeof(int), |
363 | .mode = 0644, | |
364 | .proc_handler = &proc_dointvec | |
365 | }, | |
366 | { | |
367 | .ctl_name = NET_IPV4_IPFRAG_LOW_THRESH, | |
368 | .procname = "ipfrag_low_thresh", | |
04128f23 | 369 | .data = &ip4_frags_ctl.low_thresh, |
1da177e4 LT |
370 | .maxlen = sizeof(int), |
371 | .mode = 0644, | |
372 | .proc_handler = &proc_dointvec | |
373 | }, | |
374 | { | |
375 | .ctl_name = NET_IPV4_DYNADDR, | |
376 | .procname = "ip_dynaddr", | |
377 | .data = &sysctl_ip_dynaddr, | |
378 | .maxlen = sizeof(int), | |
379 | .mode = 0644, | |
380 | .proc_handler = &proc_dointvec | |
381 | }, | |
382 | { | |
383 | .ctl_name = NET_IPV4_IPFRAG_TIME, | |
384 | .procname = "ipfrag_time", | |
04128f23 | 385 | .data = &ip4_frags_ctl.timeout, |
1da177e4 LT |
386 | .maxlen = sizeof(int), |
387 | .mode = 0644, | |
388 | .proc_handler = &proc_dointvec_jiffies, | |
389 | .strategy = &sysctl_jiffies | |
390 | }, | |
391 | { | |
392 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_TIME, | |
393 | .procname = "tcp_keepalive_time", | |
394 | .data = &sysctl_tcp_keepalive_time, | |
395 | .maxlen = sizeof(int), | |
396 | .mode = 0644, | |
397 | .proc_handler = &proc_dointvec_jiffies, | |
398 | .strategy = &sysctl_jiffies | |
399 | }, | |
400 | { | |
401 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_PROBES, | |
402 | .procname = "tcp_keepalive_probes", | |
403 | .data = &sysctl_tcp_keepalive_probes, | |
404 | .maxlen = sizeof(int), | |
405 | .mode = 0644, | |
406 | .proc_handler = &proc_dointvec | |
407 | }, | |
408 | { | |
409 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_INTVL, | |
410 | .procname = "tcp_keepalive_intvl", | |
411 | .data = &sysctl_tcp_keepalive_intvl, | |
412 | .maxlen = sizeof(int), | |
413 | .mode = 0644, | |
414 | .proc_handler = &proc_dointvec_jiffies, | |
415 | .strategy = &sysctl_jiffies | |
416 | }, | |
417 | { | |
418 | .ctl_name = NET_IPV4_TCP_RETRIES1, | |
419 | .procname = "tcp_retries1", | |
420 | .data = &sysctl_tcp_retries1, | |
421 | .maxlen = sizeof(int), | |
422 | .mode = 0644, | |
423 | .proc_handler = &proc_dointvec_minmax, | |
424 | .strategy = &sysctl_intvec, | |
425 | .extra2 = &tcp_retr1_max | |
426 | }, | |
427 | { | |
428 | .ctl_name = NET_IPV4_TCP_RETRIES2, | |
429 | .procname = "tcp_retries2", | |
430 | .data = &sysctl_tcp_retries2, | |
431 | .maxlen = sizeof(int), | |
432 | .mode = 0644, | |
433 | .proc_handler = &proc_dointvec | |
434 | }, | |
435 | { | |
436 | .ctl_name = NET_IPV4_TCP_FIN_TIMEOUT, | |
437 | .procname = "tcp_fin_timeout", | |
438 | .data = &sysctl_tcp_fin_timeout, | |
439 | .maxlen = sizeof(int), | |
440 | .mode = 0644, | |
441 | .proc_handler = &proc_dointvec_jiffies, | |
442 | .strategy = &sysctl_jiffies | |
443 | }, | |
444 | #ifdef CONFIG_SYN_COOKIES | |
445 | { | |
446 | .ctl_name = NET_TCP_SYNCOOKIES, | |
447 | .procname = "tcp_syncookies", | |
448 | .data = &sysctl_tcp_syncookies, | |
449 | .maxlen = sizeof(int), | |
450 | .mode = 0644, | |
451 | .proc_handler = &proc_dointvec | |
452 | }, | |
453 | #endif | |
454 | { | |
455 | .ctl_name = NET_TCP_TW_RECYCLE, | |
456 | .procname = "tcp_tw_recycle", | |
295ff7ed | 457 | .data = &tcp_death_row.sysctl_tw_recycle, |
1da177e4 LT |
458 | .maxlen = sizeof(int), |
459 | .mode = 0644, | |
460 | .proc_handler = &proc_dointvec | |
461 | }, | |
462 | { | |
463 | .ctl_name = NET_TCP_ABORT_ON_OVERFLOW, | |
464 | .procname = "tcp_abort_on_overflow", | |
465 | .data = &sysctl_tcp_abort_on_overflow, | |
466 | .maxlen = sizeof(int), | |
467 | .mode = 0644, | |
468 | .proc_handler = &proc_dointvec | |
469 | }, | |
470 | { | |
471 | .ctl_name = NET_TCP_STDURG, | |
472 | .procname = "tcp_stdurg", | |
473 | .data = &sysctl_tcp_stdurg, | |
474 | .maxlen = sizeof(int), | |
475 | .mode = 0644, | |
476 | .proc_handler = &proc_dointvec | |
477 | }, | |
478 | { | |
479 | .ctl_name = NET_TCP_RFC1337, | |
480 | .procname = "tcp_rfc1337", | |
481 | .data = &sysctl_tcp_rfc1337, | |
482 | .maxlen = sizeof(int), | |
483 | .mode = 0644, | |
484 | .proc_handler = &proc_dointvec | |
485 | }, | |
486 | { | |
487 | .ctl_name = NET_TCP_MAX_SYN_BACKLOG, | |
488 | .procname = "tcp_max_syn_backlog", | |
489 | .data = &sysctl_max_syn_backlog, | |
490 | .maxlen = sizeof(int), | |
491 | .mode = 0644, | |
492 | .proc_handler = &proc_dointvec | |
493 | }, | |
494 | { | |
495 | .ctl_name = NET_IPV4_LOCAL_PORT_RANGE, | |
496 | .procname = "ip_local_port_range", | |
497 | .data = &sysctl_local_port_range, | |
498 | .maxlen = sizeof(sysctl_local_port_range), | |
499 | .mode = 0644, | |
227b60f5 SH |
500 | .proc_handler = &ipv4_local_port_range, |
501 | .strategy = &ipv4_sysctl_local_port_range, | |
1da177e4 LT |
502 | }, |
503 | { | |
504 | .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_ALL, | |
505 | .procname = "icmp_echo_ignore_all", | |
506 | .data = &sysctl_icmp_echo_ignore_all, | |
507 | .maxlen = sizeof(int), | |
508 | .mode = 0644, | |
509 | .proc_handler = &proc_dointvec | |
510 | }, | |
511 | { | |
512 | .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, | |
513 | .procname = "icmp_echo_ignore_broadcasts", | |
514 | .data = &sysctl_icmp_echo_ignore_broadcasts, | |
515 | .maxlen = sizeof(int), | |
516 | .mode = 0644, | |
517 | .proc_handler = &proc_dointvec | |
518 | }, | |
519 | { | |
520 | .ctl_name = NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, | |
521 | .procname = "icmp_ignore_bogus_error_responses", | |
522 | .data = &sysctl_icmp_ignore_bogus_error_responses, | |
523 | .maxlen = sizeof(int), | |
524 | .mode = 0644, | |
525 | .proc_handler = &proc_dointvec | |
526 | }, | |
1c2fb7f9 S |
527 | { |
528 | .ctl_name = NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR, | |
529 | .procname = "icmp_errors_use_inbound_ifaddr", | |
530 | .data = &sysctl_icmp_errors_use_inbound_ifaddr, | |
531 | .maxlen = sizeof(int), | |
532 | .mode = 0644, | |
533 | .proc_handler = &proc_dointvec | |
534 | }, | |
1da177e4 LT |
535 | { |
536 | .ctl_name = NET_IPV4_ROUTE, | |
537 | .procname = "route", | |
538 | .maxlen = 0, | |
539 | .mode = 0555, | |
540 | .child = ipv4_route_table | |
541 | }, | |
542 | #ifdef CONFIG_IP_MULTICAST | |
543 | { | |
544 | .ctl_name = NET_IPV4_IGMP_MAX_MEMBERSHIPS, | |
545 | .procname = "igmp_max_memberships", | |
546 | .data = &sysctl_igmp_max_memberships, | |
547 | .maxlen = sizeof(int), | |
548 | .mode = 0644, | |
549 | .proc_handler = &proc_dointvec | |
550 | }, | |
551 | ||
552 | #endif | |
553 | { | |
554 | .ctl_name = NET_IPV4_IGMP_MAX_MSF, | |
555 | .procname = "igmp_max_msf", | |
556 | .data = &sysctl_igmp_max_msf, | |
557 | .maxlen = sizeof(int), | |
558 | .mode = 0644, | |
559 | .proc_handler = &proc_dointvec | |
560 | }, | |
561 | { | |
562 | .ctl_name = NET_IPV4_INET_PEER_THRESHOLD, | |
563 | .procname = "inet_peer_threshold", | |
564 | .data = &inet_peer_threshold, | |
565 | .maxlen = sizeof(int), | |
566 | .mode = 0644, | |
567 | .proc_handler = &proc_dointvec | |
568 | }, | |
569 | { | |
570 | .ctl_name = NET_IPV4_INET_PEER_MINTTL, | |
571 | .procname = "inet_peer_minttl", | |
572 | .data = &inet_peer_minttl, | |
573 | .maxlen = sizeof(int), | |
574 | .mode = 0644, | |
575 | .proc_handler = &proc_dointvec_jiffies, | |
576 | .strategy = &sysctl_jiffies | |
577 | }, | |
578 | { | |
579 | .ctl_name = NET_IPV4_INET_PEER_MAXTTL, | |
580 | .procname = "inet_peer_maxttl", | |
581 | .data = &inet_peer_maxttl, | |
582 | .maxlen = sizeof(int), | |
583 | .mode = 0644, | |
584 | .proc_handler = &proc_dointvec_jiffies, | |
585 | .strategy = &sysctl_jiffies | |
586 | }, | |
587 | { | |
588 | .ctl_name = NET_IPV4_INET_PEER_GC_MINTIME, | |
589 | .procname = "inet_peer_gc_mintime", | |
590 | .data = &inet_peer_gc_mintime, | |
591 | .maxlen = sizeof(int), | |
592 | .mode = 0644, | |
593 | .proc_handler = &proc_dointvec_jiffies, | |
594 | .strategy = &sysctl_jiffies | |
595 | }, | |
596 | { | |
597 | .ctl_name = NET_IPV4_INET_PEER_GC_MAXTIME, | |
598 | .procname = "inet_peer_gc_maxtime", | |
599 | .data = &inet_peer_gc_maxtime, | |
600 | .maxlen = sizeof(int), | |
601 | .mode = 0644, | |
602 | .proc_handler = &proc_dointvec_jiffies, | |
603 | .strategy = &sysctl_jiffies | |
604 | }, | |
605 | { | |
606 | .ctl_name = NET_TCP_ORPHAN_RETRIES, | |
607 | .procname = "tcp_orphan_retries", | |
608 | .data = &sysctl_tcp_orphan_retries, | |
609 | .maxlen = sizeof(int), | |
610 | .mode = 0644, | |
611 | .proc_handler = &proc_dointvec | |
612 | }, | |
613 | { | |
614 | .ctl_name = NET_TCP_FACK, | |
615 | .procname = "tcp_fack", | |
616 | .data = &sysctl_tcp_fack, | |
617 | .maxlen = sizeof(int), | |
618 | .mode = 0644, | |
619 | .proc_handler = &proc_dointvec | |
620 | }, | |
621 | { | |
622 | .ctl_name = NET_TCP_REORDERING, | |
623 | .procname = "tcp_reordering", | |
624 | .data = &sysctl_tcp_reordering, | |
625 | .maxlen = sizeof(int), | |
626 | .mode = 0644, | |
627 | .proc_handler = &proc_dointvec | |
628 | }, | |
629 | { | |
630 | .ctl_name = NET_TCP_ECN, | |
631 | .procname = "tcp_ecn", | |
632 | .data = &sysctl_tcp_ecn, | |
633 | .maxlen = sizeof(int), | |
634 | .mode = 0644, | |
635 | .proc_handler = &proc_dointvec | |
636 | }, | |
637 | { | |
638 | .ctl_name = NET_TCP_DSACK, | |
639 | .procname = "tcp_dsack", | |
640 | .data = &sysctl_tcp_dsack, | |
641 | .maxlen = sizeof(int), | |
642 | .mode = 0644, | |
643 | .proc_handler = &proc_dointvec | |
644 | }, | |
645 | { | |
646 | .ctl_name = NET_TCP_MEM, | |
647 | .procname = "tcp_mem", | |
648 | .data = &sysctl_tcp_mem, | |
649 | .maxlen = sizeof(sysctl_tcp_mem), | |
650 | .mode = 0644, | |
651 | .proc_handler = &proc_dointvec | |
652 | }, | |
653 | { | |
654 | .ctl_name = NET_TCP_WMEM, | |
655 | .procname = "tcp_wmem", | |
656 | .data = &sysctl_tcp_wmem, | |
657 | .maxlen = sizeof(sysctl_tcp_wmem), | |
658 | .mode = 0644, | |
659 | .proc_handler = &proc_dointvec | |
660 | }, | |
661 | { | |
662 | .ctl_name = NET_TCP_RMEM, | |
663 | .procname = "tcp_rmem", | |
664 | .data = &sysctl_tcp_rmem, | |
665 | .maxlen = sizeof(sysctl_tcp_rmem), | |
666 | .mode = 0644, | |
667 | .proc_handler = &proc_dointvec | |
668 | }, | |
669 | { | |
670 | .ctl_name = NET_TCP_APP_WIN, | |
671 | .procname = "tcp_app_win", | |
672 | .data = &sysctl_tcp_app_win, | |
673 | .maxlen = sizeof(int), | |
674 | .mode = 0644, | |
675 | .proc_handler = &proc_dointvec | |
676 | }, | |
677 | { | |
678 | .ctl_name = NET_TCP_ADV_WIN_SCALE, | |
679 | .procname = "tcp_adv_win_scale", | |
680 | .data = &sysctl_tcp_adv_win_scale, | |
681 | .maxlen = sizeof(int), | |
682 | .mode = 0644, | |
683 | .proc_handler = &proc_dointvec | |
684 | }, | |
685 | { | |
686 | .ctl_name = NET_IPV4_ICMP_RATELIMIT, | |
687 | .procname = "icmp_ratelimit", | |
688 | .data = &sysctl_icmp_ratelimit, | |
689 | .maxlen = sizeof(int), | |
690 | .mode = 0644, | |
691 | .proc_handler = &proc_dointvec | |
692 | }, | |
693 | { | |
694 | .ctl_name = NET_IPV4_ICMP_RATEMASK, | |
695 | .procname = "icmp_ratemask", | |
696 | .data = &sysctl_icmp_ratemask, | |
697 | .maxlen = sizeof(int), | |
698 | .mode = 0644, | |
699 | .proc_handler = &proc_dointvec | |
700 | }, | |
701 | { | |
702 | .ctl_name = NET_TCP_TW_REUSE, | |
703 | .procname = "tcp_tw_reuse", | |
704 | .data = &sysctl_tcp_tw_reuse, | |
705 | .maxlen = sizeof(int), | |
706 | .mode = 0644, | |
707 | .proc_handler = &proc_dointvec | |
708 | }, | |
709 | { | |
710 | .ctl_name = NET_TCP_FRTO, | |
711 | .procname = "tcp_frto", | |
712 | .data = &sysctl_tcp_frto, | |
713 | .maxlen = sizeof(int), | |
714 | .mode = 0644, | |
715 | .proc_handler = &proc_dointvec | |
716 | }, | |
3cfe3baa IJ |
717 | { |
718 | .ctl_name = NET_TCP_FRTO_RESPONSE, | |
719 | .procname = "tcp_frto_response", | |
720 | .data = &sysctl_tcp_frto_response, | |
721 | .maxlen = sizeof(int), | |
722 | .mode = 0644, | |
723 | .proc_handler = &proc_dointvec | |
724 | }, | |
1da177e4 LT |
725 | { |
726 | .ctl_name = NET_TCP_LOW_LATENCY, | |
727 | .procname = "tcp_low_latency", | |
728 | .data = &sysctl_tcp_low_latency, | |
729 | .maxlen = sizeof(int), | |
730 | .mode = 0644, | |
731 | .proc_handler = &proc_dointvec | |
732 | }, | |
733 | { | |
734 | .ctl_name = NET_IPV4_IPFRAG_SECRET_INTERVAL, | |
735 | .procname = "ipfrag_secret_interval", | |
04128f23 | 736 | .data = &ip4_frags_ctl.secret_interval, |
1da177e4 LT |
737 | .maxlen = sizeof(int), |
738 | .mode = 0644, | |
739 | .proc_handler = &proc_dointvec_jiffies, | |
740 | .strategy = &sysctl_jiffies | |
741 | }, | |
89cee8b1 | 742 | { |
89cee8b1 HX |
743 | .procname = "ipfrag_max_dist", |
744 | .data = &sysctl_ipfrag_max_dist, | |
745 | .maxlen = sizeof(int), | |
746 | .mode = 0644, | |
747 | .proc_handler = &proc_dointvec_minmax, | |
748 | .extra1 = &zero | |
749 | }, | |
1da177e4 LT |
750 | { |
751 | .ctl_name = NET_TCP_NO_METRICS_SAVE, | |
752 | .procname = "tcp_no_metrics_save", | |
753 | .data = &sysctl_tcp_nometrics_save, | |
754 | .maxlen = sizeof(int), | |
755 | .mode = 0644, | |
756 | .proc_handler = &proc_dointvec, | |
757 | }, | |
1da177e4 LT |
758 | { |
759 | .ctl_name = NET_TCP_MODERATE_RCVBUF, | |
760 | .procname = "tcp_moderate_rcvbuf", | |
761 | .data = &sysctl_tcp_moderate_rcvbuf, | |
762 | .maxlen = sizeof(int), | |
763 | .mode = 0644, | |
764 | .proc_handler = &proc_dointvec, | |
765 | }, | |
766 | { | |
767 | .ctl_name = NET_TCP_TSO_WIN_DIVISOR, | |
768 | .procname = "tcp_tso_win_divisor", | |
769 | .data = &sysctl_tcp_tso_win_divisor, | |
770 | .maxlen = sizeof(int), | |
771 | .mode = 0644, | |
772 | .proc_handler = &proc_dointvec, | |
773 | }, | |
774 | { | |
317a76f9 SH |
775 | .ctl_name = NET_TCP_CONG_CONTROL, |
776 | .procname = "tcp_congestion_control", | |
1da177e4 | 777 | .mode = 0644, |
317a76f9 SH |
778 | .maxlen = TCP_CA_NAME_MAX, |
779 | .proc_handler = &proc_tcp_congestion_control, | |
780 | .strategy = &sysctl_tcp_congestion_control, | |
1da177e4 | 781 | }, |
9772efb9 SH |
782 | { |
783 | .ctl_name = NET_TCP_ABC, | |
784 | .procname = "tcp_abc", | |
785 | .data = &sysctl_tcp_abc, | |
786 | .maxlen = sizeof(int), | |
787 | .mode = 0644, | |
788 | .proc_handler = &proc_dointvec, | |
789 | }, | |
5d424d5a JH |
790 | { |
791 | .ctl_name = NET_TCP_MTU_PROBING, | |
792 | .procname = "tcp_mtu_probing", | |
793 | .data = &sysctl_tcp_mtu_probing, | |
794 | .maxlen = sizeof(int), | |
795 | .mode = 0644, | |
796 | .proc_handler = &proc_dointvec, | |
797 | }, | |
798 | { | |
799 | .ctl_name = NET_TCP_BASE_MSS, | |
800 | .procname = "tcp_base_mss", | |
801 | .data = &sysctl_tcp_base_mss, | |
802 | .maxlen = sizeof(int), | |
803 | .mode = 0644, | |
804 | .proc_handler = &proc_dointvec, | |
805 | }, | |
e905a9ed | 806 | { |
15d99e02 RJ |
807 | .ctl_name = NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS, |
808 | .procname = "tcp_workaround_signed_windows", | |
809 | .data = &sysctl_tcp_workaround_signed_windows, | |
810 | .maxlen = sizeof(int), | |
811 | .mode = 0644, | |
812 | .proc_handler = &proc_dointvec | |
813 | }, | |
95937825 CL |
814 | #ifdef CONFIG_NET_DMA |
815 | { | |
816 | .ctl_name = NET_TCP_DMA_COPYBREAK, | |
817 | .procname = "tcp_dma_copybreak", | |
818 | .data = &sysctl_tcp_dma_copybreak, | |
819 | .maxlen = sizeof(int), | |
820 | .mode = 0644, | |
821 | .proc_handler = &proc_dointvec | |
822 | }, | |
823 | #endif | |
35089bb2 DM |
824 | { |
825 | .ctl_name = NET_TCP_SLOW_START_AFTER_IDLE, | |
826 | .procname = "tcp_slow_start_after_idle", | |
827 | .data = &sysctl_tcp_slow_start_after_idle, | |
828 | .maxlen = sizeof(int), | |
829 | .mode = 0644, | |
830 | .proc_handler = &proc_dointvec | |
831 | }, | |
446fda4f PM |
832 | #ifdef CONFIG_NETLABEL |
833 | { | |
834 | .ctl_name = NET_CIPSOV4_CACHE_ENABLE, | |
835 | .procname = "cipso_cache_enable", | |
836 | .data = &cipso_v4_cache_enabled, | |
837 | .maxlen = sizeof(int), | |
838 | .mode = 0644, | |
839 | .proc_handler = &proc_dointvec, | |
840 | }, | |
841 | { | |
842 | .ctl_name = NET_CIPSOV4_CACHE_BUCKET_SIZE, | |
843 | .procname = "cipso_cache_bucket_size", | |
844 | .data = &cipso_v4_cache_bucketsize, | |
845 | .maxlen = sizeof(int), | |
846 | .mode = 0644, | |
847 | .proc_handler = &proc_dointvec, | |
848 | }, | |
849 | { | |
850 | .ctl_name = NET_CIPSOV4_RBM_OPTFMT, | |
851 | .procname = "cipso_rbm_optfmt", | |
852 | .data = &cipso_v4_rbm_optfmt, | |
853 | .maxlen = sizeof(int), | |
854 | .mode = 0644, | |
855 | .proc_handler = &proc_dointvec, | |
856 | }, | |
857 | { | |
858 | .ctl_name = NET_CIPSOV4_RBM_STRICTVALID, | |
859 | .procname = "cipso_rbm_strictvalid", | |
860 | .data = &cipso_v4_rbm_strictvalid, | |
861 | .maxlen = sizeof(int), | |
862 | .mode = 0644, | |
863 | .proc_handler = &proc_dointvec, | |
864 | }, | |
865 | #endif /* CONFIG_NETLABEL */ | |
3ff825b2 | 866 | { |
3ff825b2 SH |
867 | .procname = "tcp_available_congestion_control", |
868 | .maxlen = TCP_CA_BUF_MAX, | |
869 | .mode = 0444, | |
870 | .proc_handler = &proc_tcp_available_congestion_control, | |
871 | }, | |
ce7bc3bf SH |
872 | { |
873 | .ctl_name = NET_TCP_ALLOWED_CONG_CONTROL, | |
874 | .procname = "tcp_allowed_congestion_control", | |
875 | .maxlen = TCP_CA_BUF_MAX, | |
876 | .mode = 0644, | |
877 | .proc_handler = &proc_allowed_congestion_control, | |
878 | .strategy = &strategy_allowed_congestion_control, | |
879 | }, | |
886236c1 JH |
880 | { |
881 | .ctl_name = NET_TCP_MAX_SSTHRESH, | |
882 | .procname = "tcp_max_ssthresh", | |
883 | .data = &sysctl_tcp_max_ssthresh, | |
884 | .maxlen = sizeof(int), | |
885 | .mode = 0644, | |
886 | .proc_handler = &proc_dointvec, | |
887 | }, | |
1da177e4 LT |
888 | { .ctl_name = 0 } |
889 | }; | |
890 | ||
891 | #endif /* CONFIG_SYSCTL */ | |
892 | ||
893 | EXPORT_SYMBOL(ipv4_config); |