Commit | Line | Data |
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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> |
1da177e4 | 15 | #include <net/snmp.h> |
20380731 | 16 | #include <net/icmp.h> |
1da177e4 LT |
17 | #include <net/ip.h> |
18 | #include <net/route.h> | |
19 | #include <net/tcp.h> | |
446fda4f | 20 | #include <net/cipso_ipv4.h> |
1da177e4 LT |
21 | |
22 | /* From af_inet.c */ | |
23 | extern int sysctl_ip_nonlocal_bind; | |
24 | ||
1da177e4 | 25 | #ifdef CONFIG_SYSCTL |
89cee8b1 | 26 | static int zero; |
1da177e4 LT |
27 | static int tcp_retr1_max = 255; |
28 | static int ip_local_port_range_min[] = { 1, 1 }; | |
29 | static int ip_local_port_range_max[] = { 65535, 65535 }; | |
30 | #endif | |
31 | ||
32 | struct ipv4_config ipv4_config; | |
33 | ||
1da177e4 LT |
34 | #ifdef CONFIG_SYSCTL |
35 | ||
36 | static | |
37 | int ipv4_sysctl_forward(ctl_table *ctl, int write, struct file * filp, | |
38 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
39 | { | |
40 | int val = ipv4_devconf.forwarding; | |
41 | int ret; | |
42 | ||
43 | ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); | |
44 | ||
45 | if (write && ipv4_devconf.forwarding != val) | |
46 | inet_forward_change(); | |
47 | ||
48 | return ret; | |
49 | } | |
50 | ||
51 | static int ipv4_sysctl_forward_strategy(ctl_table *table, | |
52 | int __user *name, int nlen, | |
53 | void __user *oldval, size_t __user *oldlenp, | |
54 | void __user *newval, size_t newlen, | |
55 | void **context) | |
56 | { | |
57 | int *valp = table->data; | |
58 | int new; | |
59 | ||
60 | if (!newval || !newlen) | |
61 | return 0; | |
62 | ||
63 | if (newlen != sizeof(int)) | |
64 | return -EINVAL; | |
65 | ||
66 | if (get_user(new, (int __user *)newval)) | |
67 | return -EFAULT; | |
68 | ||
69 | if (new == *valp) | |
70 | return 0; | |
71 | ||
72 | if (oldval && oldlenp) { | |
73 | size_t len; | |
74 | ||
75 | if (get_user(len, oldlenp)) | |
76 | return -EFAULT; | |
77 | ||
78 | if (len) { | |
79 | if (len > table->maxlen) | |
80 | len = table->maxlen; | |
81 | if (copy_to_user(oldval, valp, len)) | |
82 | return -EFAULT; | |
83 | if (put_user(len, oldlenp)) | |
84 | return -EFAULT; | |
85 | } | |
86 | } | |
87 | ||
88 | *valp = new; | |
89 | inet_forward_change(); | |
90 | return 1; | |
91 | } | |
92 | ||
317a76f9 SH |
93 | static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file * filp, |
94 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
95 | { | |
96 | char val[TCP_CA_NAME_MAX]; | |
97 | ctl_table tbl = { | |
98 | .data = val, | |
99 | .maxlen = TCP_CA_NAME_MAX, | |
100 | }; | |
101 | int ret; | |
102 | ||
103 | tcp_get_default_congestion_control(val); | |
104 | ||
105 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); | |
106 | if (write && ret == 0) | |
107 | ret = tcp_set_default_congestion_control(val); | |
108 | return ret; | |
109 | } | |
110 | ||
20380731 ACM |
111 | static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name, |
112 | int nlen, void __user *oldval, | |
113 | size_t __user *oldlenp, | |
114 | void __user *newval, size_t newlen, | |
115 | void **context) | |
317a76f9 SH |
116 | { |
117 | char val[TCP_CA_NAME_MAX]; | |
118 | ctl_table tbl = { | |
119 | .data = val, | |
120 | .maxlen = TCP_CA_NAME_MAX, | |
121 | }; | |
122 | int ret; | |
123 | ||
124 | tcp_get_default_congestion_control(val); | |
125 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen, | |
126 | context); | |
127 | if (ret == 0 && newval && newlen) | |
128 | ret = tcp_set_default_congestion_control(val); | |
129 | return ret; | |
130 | } | |
131 | ||
3ff825b2 SH |
132 | static int proc_tcp_available_congestion_control(ctl_table *ctl, |
133 | int write, struct file * filp, | |
134 | void __user *buffer, size_t *lenp, | |
135 | loff_t *ppos) | |
136 | { | |
137 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; | |
138 | int ret; | |
139 | ||
140 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
141 | if (!tbl.data) | |
142 | return -ENOMEM; | |
143 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); | |
144 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); | |
145 | kfree(tbl.data); | |
146 | return ret; | |
147 | } | |
148 | ||
ce7bc3bf SH |
149 | static int proc_allowed_congestion_control(ctl_table *ctl, |
150 | int write, struct file * filp, | |
151 | void __user *buffer, size_t *lenp, | |
152 | loff_t *ppos) | |
153 | { | |
154 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; | |
155 | int ret; | |
156 | ||
157 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
158 | if (!tbl.data) | |
159 | return -ENOMEM; | |
160 | ||
161 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); | |
162 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); | |
163 | if (write && ret == 0) | |
164 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
165 | kfree(tbl.data); | |
166 | return ret; | |
167 | } | |
168 | ||
169 | static int strategy_allowed_congestion_control(ctl_table *table, int __user *name, | |
170 | int nlen, void __user *oldval, | |
171 | size_t __user *oldlenp, | |
172 | void __user *newval, size_t newlen, | |
173 | void **context) | |
174 | { | |
175 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; | |
176 | int ret; | |
177 | ||
178 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
179 | if (!tbl.data) | |
180 | return -ENOMEM; | |
181 | ||
182 | tcp_get_available_congestion_control(tbl.data, tbl.maxlen); | |
183 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen, | |
184 | context); | |
185 | if (ret == 0 && newval && newlen) | |
186 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
187 | kfree(tbl.data); | |
188 | ||
189 | return ret; | |
190 | ||
191 | } | |
192 | ||
1da177e4 LT |
193 | ctl_table ipv4_table[] = { |
194 | { | |
195 | .ctl_name = NET_IPV4_TCP_TIMESTAMPS, | |
196 | .procname = "tcp_timestamps", | |
197 | .data = &sysctl_tcp_timestamps, | |
198 | .maxlen = sizeof(int), | |
199 | .mode = 0644, | |
200 | .proc_handler = &proc_dointvec | |
201 | }, | |
202 | { | |
203 | .ctl_name = NET_IPV4_TCP_WINDOW_SCALING, | |
204 | .procname = "tcp_window_scaling", | |
205 | .data = &sysctl_tcp_window_scaling, | |
206 | .maxlen = sizeof(int), | |
207 | .mode = 0644, | |
208 | .proc_handler = &proc_dointvec | |
209 | }, | |
210 | { | |
211 | .ctl_name = NET_IPV4_TCP_SACK, | |
212 | .procname = "tcp_sack", | |
213 | .data = &sysctl_tcp_sack, | |
214 | .maxlen = sizeof(int), | |
215 | .mode = 0644, | |
216 | .proc_handler = &proc_dointvec | |
217 | }, | |
218 | { | |
219 | .ctl_name = NET_IPV4_TCP_RETRANS_COLLAPSE, | |
220 | .procname = "tcp_retrans_collapse", | |
221 | .data = &sysctl_tcp_retrans_collapse, | |
222 | .maxlen = sizeof(int), | |
223 | .mode = 0644, | |
224 | .proc_handler = &proc_dointvec | |
225 | }, | |
226 | { | |
227 | .ctl_name = NET_IPV4_FORWARD, | |
228 | .procname = "ip_forward", | |
229 | .data = &ipv4_devconf.forwarding, | |
230 | .maxlen = sizeof(int), | |
231 | .mode = 0644, | |
232 | .proc_handler = &ipv4_sysctl_forward, | |
233 | .strategy = &ipv4_sysctl_forward_strategy | |
234 | }, | |
235 | { | |
236 | .ctl_name = NET_IPV4_DEFAULT_TTL, | |
237 | .procname = "ip_default_ttl", | |
238 | .data = &sysctl_ip_default_ttl, | |
239 | .maxlen = sizeof(int), | |
240 | .mode = 0644, | |
241 | .proc_handler = &ipv4_doint_and_flush, | |
242 | .strategy = &ipv4_doint_and_flush_strategy, | |
243 | }, | |
1da177e4 LT |
244 | { |
245 | .ctl_name = NET_IPV4_NO_PMTU_DISC, | |
246 | .procname = "ip_no_pmtu_disc", | |
247 | .data = &ipv4_config.no_pmtu_disc, | |
248 | .maxlen = sizeof(int), | |
249 | .mode = 0644, | |
250 | .proc_handler = &proc_dointvec | |
251 | }, | |
252 | { | |
253 | .ctl_name = NET_IPV4_NONLOCAL_BIND, | |
254 | .procname = "ip_nonlocal_bind", | |
255 | .data = &sysctl_ip_nonlocal_bind, | |
256 | .maxlen = sizeof(int), | |
257 | .mode = 0644, | |
258 | .proc_handler = &proc_dointvec | |
259 | }, | |
260 | { | |
261 | .ctl_name = NET_IPV4_TCP_SYN_RETRIES, | |
262 | .procname = "tcp_syn_retries", | |
263 | .data = &sysctl_tcp_syn_retries, | |
264 | .maxlen = sizeof(int), | |
265 | .mode = 0644, | |
266 | .proc_handler = &proc_dointvec | |
267 | }, | |
268 | { | |
269 | .ctl_name = NET_TCP_SYNACK_RETRIES, | |
270 | .procname = "tcp_synack_retries", | |
271 | .data = &sysctl_tcp_synack_retries, | |
272 | .maxlen = sizeof(int), | |
273 | .mode = 0644, | |
274 | .proc_handler = &proc_dointvec | |
275 | }, | |
276 | { | |
277 | .ctl_name = NET_TCP_MAX_ORPHANS, | |
278 | .procname = "tcp_max_orphans", | |
279 | .data = &sysctl_tcp_max_orphans, | |
280 | .maxlen = sizeof(int), | |
281 | .mode = 0644, | |
282 | .proc_handler = &proc_dointvec | |
283 | }, | |
284 | { | |
285 | .ctl_name = NET_TCP_MAX_TW_BUCKETS, | |
286 | .procname = "tcp_max_tw_buckets", | |
295ff7ed | 287 | .data = &tcp_death_row.sysctl_max_tw_buckets, |
1da177e4 LT |
288 | .maxlen = sizeof(int), |
289 | .mode = 0644, | |
290 | .proc_handler = &proc_dointvec | |
291 | }, | |
292 | { | |
293 | .ctl_name = NET_IPV4_IPFRAG_HIGH_THRESH, | |
294 | .procname = "ipfrag_high_thresh", | |
295 | .data = &sysctl_ipfrag_high_thresh, | |
296 | .maxlen = sizeof(int), | |
297 | .mode = 0644, | |
298 | .proc_handler = &proc_dointvec | |
299 | }, | |
300 | { | |
301 | .ctl_name = NET_IPV4_IPFRAG_LOW_THRESH, | |
302 | .procname = "ipfrag_low_thresh", | |
303 | .data = &sysctl_ipfrag_low_thresh, | |
304 | .maxlen = sizeof(int), | |
305 | .mode = 0644, | |
306 | .proc_handler = &proc_dointvec | |
307 | }, | |
308 | { | |
309 | .ctl_name = NET_IPV4_DYNADDR, | |
310 | .procname = "ip_dynaddr", | |
311 | .data = &sysctl_ip_dynaddr, | |
312 | .maxlen = sizeof(int), | |
313 | .mode = 0644, | |
314 | .proc_handler = &proc_dointvec | |
315 | }, | |
316 | { | |
317 | .ctl_name = NET_IPV4_IPFRAG_TIME, | |
318 | .procname = "ipfrag_time", | |
319 | .data = &sysctl_ipfrag_time, | |
320 | .maxlen = sizeof(int), | |
321 | .mode = 0644, | |
322 | .proc_handler = &proc_dointvec_jiffies, | |
323 | .strategy = &sysctl_jiffies | |
324 | }, | |
325 | { | |
326 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_TIME, | |
327 | .procname = "tcp_keepalive_time", | |
328 | .data = &sysctl_tcp_keepalive_time, | |
329 | .maxlen = sizeof(int), | |
330 | .mode = 0644, | |
331 | .proc_handler = &proc_dointvec_jiffies, | |
332 | .strategy = &sysctl_jiffies | |
333 | }, | |
334 | { | |
335 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_PROBES, | |
336 | .procname = "tcp_keepalive_probes", | |
337 | .data = &sysctl_tcp_keepalive_probes, | |
338 | .maxlen = sizeof(int), | |
339 | .mode = 0644, | |
340 | .proc_handler = &proc_dointvec | |
341 | }, | |
342 | { | |
343 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_INTVL, | |
344 | .procname = "tcp_keepalive_intvl", | |
345 | .data = &sysctl_tcp_keepalive_intvl, | |
346 | .maxlen = sizeof(int), | |
347 | .mode = 0644, | |
348 | .proc_handler = &proc_dointvec_jiffies, | |
349 | .strategy = &sysctl_jiffies | |
350 | }, | |
351 | { | |
352 | .ctl_name = NET_IPV4_TCP_RETRIES1, | |
353 | .procname = "tcp_retries1", | |
354 | .data = &sysctl_tcp_retries1, | |
355 | .maxlen = sizeof(int), | |
356 | .mode = 0644, | |
357 | .proc_handler = &proc_dointvec_minmax, | |
358 | .strategy = &sysctl_intvec, | |
359 | .extra2 = &tcp_retr1_max | |
360 | }, | |
361 | { | |
362 | .ctl_name = NET_IPV4_TCP_RETRIES2, | |
363 | .procname = "tcp_retries2", | |
364 | .data = &sysctl_tcp_retries2, | |
365 | .maxlen = sizeof(int), | |
366 | .mode = 0644, | |
367 | .proc_handler = &proc_dointvec | |
368 | }, | |
369 | { | |
370 | .ctl_name = NET_IPV4_TCP_FIN_TIMEOUT, | |
371 | .procname = "tcp_fin_timeout", | |
372 | .data = &sysctl_tcp_fin_timeout, | |
373 | .maxlen = sizeof(int), | |
374 | .mode = 0644, | |
375 | .proc_handler = &proc_dointvec_jiffies, | |
376 | .strategy = &sysctl_jiffies | |
377 | }, | |
378 | #ifdef CONFIG_SYN_COOKIES | |
379 | { | |
380 | .ctl_name = NET_TCP_SYNCOOKIES, | |
381 | .procname = "tcp_syncookies", | |
382 | .data = &sysctl_tcp_syncookies, | |
383 | .maxlen = sizeof(int), | |
384 | .mode = 0644, | |
385 | .proc_handler = &proc_dointvec | |
386 | }, | |
387 | #endif | |
388 | { | |
389 | .ctl_name = NET_TCP_TW_RECYCLE, | |
390 | .procname = "tcp_tw_recycle", | |
295ff7ed | 391 | .data = &tcp_death_row.sysctl_tw_recycle, |
1da177e4 LT |
392 | .maxlen = sizeof(int), |
393 | .mode = 0644, | |
394 | .proc_handler = &proc_dointvec | |
395 | }, | |
396 | { | |
397 | .ctl_name = NET_TCP_ABORT_ON_OVERFLOW, | |
398 | .procname = "tcp_abort_on_overflow", | |
399 | .data = &sysctl_tcp_abort_on_overflow, | |
400 | .maxlen = sizeof(int), | |
401 | .mode = 0644, | |
402 | .proc_handler = &proc_dointvec | |
403 | }, | |
404 | { | |
405 | .ctl_name = NET_TCP_STDURG, | |
406 | .procname = "tcp_stdurg", | |
407 | .data = &sysctl_tcp_stdurg, | |
408 | .maxlen = sizeof(int), | |
409 | .mode = 0644, | |
410 | .proc_handler = &proc_dointvec | |
411 | }, | |
412 | { | |
413 | .ctl_name = NET_TCP_RFC1337, | |
414 | .procname = "tcp_rfc1337", | |
415 | .data = &sysctl_tcp_rfc1337, | |
416 | .maxlen = sizeof(int), | |
417 | .mode = 0644, | |
418 | .proc_handler = &proc_dointvec | |
419 | }, | |
420 | { | |
421 | .ctl_name = NET_TCP_MAX_SYN_BACKLOG, | |
422 | .procname = "tcp_max_syn_backlog", | |
423 | .data = &sysctl_max_syn_backlog, | |
424 | .maxlen = sizeof(int), | |
425 | .mode = 0644, | |
426 | .proc_handler = &proc_dointvec | |
427 | }, | |
428 | { | |
429 | .ctl_name = NET_IPV4_LOCAL_PORT_RANGE, | |
430 | .procname = "ip_local_port_range", | |
431 | .data = &sysctl_local_port_range, | |
432 | .maxlen = sizeof(sysctl_local_port_range), | |
433 | .mode = 0644, | |
434 | .proc_handler = &proc_dointvec_minmax, | |
435 | .strategy = &sysctl_intvec, | |
436 | .extra1 = ip_local_port_range_min, | |
437 | .extra2 = ip_local_port_range_max | |
438 | }, | |
439 | { | |
440 | .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_ALL, | |
441 | .procname = "icmp_echo_ignore_all", | |
442 | .data = &sysctl_icmp_echo_ignore_all, | |
443 | .maxlen = sizeof(int), | |
444 | .mode = 0644, | |
445 | .proc_handler = &proc_dointvec | |
446 | }, | |
447 | { | |
448 | .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, | |
449 | .procname = "icmp_echo_ignore_broadcasts", | |
450 | .data = &sysctl_icmp_echo_ignore_broadcasts, | |
451 | .maxlen = sizeof(int), | |
452 | .mode = 0644, | |
453 | .proc_handler = &proc_dointvec | |
454 | }, | |
455 | { | |
456 | .ctl_name = NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, | |
457 | .procname = "icmp_ignore_bogus_error_responses", | |
458 | .data = &sysctl_icmp_ignore_bogus_error_responses, | |
459 | .maxlen = sizeof(int), | |
460 | .mode = 0644, | |
461 | .proc_handler = &proc_dointvec | |
462 | }, | |
1c2fb7f9 S |
463 | { |
464 | .ctl_name = NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR, | |
465 | .procname = "icmp_errors_use_inbound_ifaddr", | |
466 | .data = &sysctl_icmp_errors_use_inbound_ifaddr, | |
467 | .maxlen = sizeof(int), | |
468 | .mode = 0644, | |
469 | .proc_handler = &proc_dointvec | |
470 | }, | |
1da177e4 LT |
471 | { |
472 | .ctl_name = NET_IPV4_ROUTE, | |
473 | .procname = "route", | |
474 | .maxlen = 0, | |
475 | .mode = 0555, | |
476 | .child = ipv4_route_table | |
477 | }, | |
478 | #ifdef CONFIG_IP_MULTICAST | |
479 | { | |
480 | .ctl_name = NET_IPV4_IGMP_MAX_MEMBERSHIPS, | |
481 | .procname = "igmp_max_memberships", | |
482 | .data = &sysctl_igmp_max_memberships, | |
483 | .maxlen = sizeof(int), | |
484 | .mode = 0644, | |
485 | .proc_handler = &proc_dointvec | |
486 | }, | |
487 | ||
488 | #endif | |
489 | { | |
490 | .ctl_name = NET_IPV4_IGMP_MAX_MSF, | |
491 | .procname = "igmp_max_msf", | |
492 | .data = &sysctl_igmp_max_msf, | |
493 | .maxlen = sizeof(int), | |
494 | .mode = 0644, | |
495 | .proc_handler = &proc_dointvec | |
496 | }, | |
497 | { | |
498 | .ctl_name = NET_IPV4_INET_PEER_THRESHOLD, | |
499 | .procname = "inet_peer_threshold", | |
500 | .data = &inet_peer_threshold, | |
501 | .maxlen = sizeof(int), | |
502 | .mode = 0644, | |
503 | .proc_handler = &proc_dointvec | |
504 | }, | |
505 | { | |
506 | .ctl_name = NET_IPV4_INET_PEER_MINTTL, | |
507 | .procname = "inet_peer_minttl", | |
508 | .data = &inet_peer_minttl, | |
509 | .maxlen = sizeof(int), | |
510 | .mode = 0644, | |
511 | .proc_handler = &proc_dointvec_jiffies, | |
512 | .strategy = &sysctl_jiffies | |
513 | }, | |
514 | { | |
515 | .ctl_name = NET_IPV4_INET_PEER_MAXTTL, | |
516 | .procname = "inet_peer_maxttl", | |
517 | .data = &inet_peer_maxttl, | |
518 | .maxlen = sizeof(int), | |
519 | .mode = 0644, | |
520 | .proc_handler = &proc_dointvec_jiffies, | |
521 | .strategy = &sysctl_jiffies | |
522 | }, | |
523 | { | |
524 | .ctl_name = NET_IPV4_INET_PEER_GC_MINTIME, | |
525 | .procname = "inet_peer_gc_mintime", | |
526 | .data = &inet_peer_gc_mintime, | |
527 | .maxlen = sizeof(int), | |
528 | .mode = 0644, | |
529 | .proc_handler = &proc_dointvec_jiffies, | |
530 | .strategy = &sysctl_jiffies | |
531 | }, | |
532 | { | |
533 | .ctl_name = NET_IPV4_INET_PEER_GC_MAXTIME, | |
534 | .procname = "inet_peer_gc_maxtime", | |
535 | .data = &inet_peer_gc_maxtime, | |
536 | .maxlen = sizeof(int), | |
537 | .mode = 0644, | |
538 | .proc_handler = &proc_dointvec_jiffies, | |
539 | .strategy = &sysctl_jiffies | |
540 | }, | |
541 | { | |
542 | .ctl_name = NET_TCP_ORPHAN_RETRIES, | |
543 | .procname = "tcp_orphan_retries", | |
544 | .data = &sysctl_tcp_orphan_retries, | |
545 | .maxlen = sizeof(int), | |
546 | .mode = 0644, | |
547 | .proc_handler = &proc_dointvec | |
548 | }, | |
549 | { | |
550 | .ctl_name = NET_TCP_FACK, | |
551 | .procname = "tcp_fack", | |
552 | .data = &sysctl_tcp_fack, | |
553 | .maxlen = sizeof(int), | |
554 | .mode = 0644, | |
555 | .proc_handler = &proc_dointvec | |
556 | }, | |
557 | { | |
558 | .ctl_name = NET_TCP_REORDERING, | |
559 | .procname = "tcp_reordering", | |
560 | .data = &sysctl_tcp_reordering, | |
561 | .maxlen = sizeof(int), | |
562 | .mode = 0644, | |
563 | .proc_handler = &proc_dointvec | |
564 | }, | |
565 | { | |
566 | .ctl_name = NET_TCP_ECN, | |
567 | .procname = "tcp_ecn", | |
568 | .data = &sysctl_tcp_ecn, | |
569 | .maxlen = sizeof(int), | |
570 | .mode = 0644, | |
571 | .proc_handler = &proc_dointvec | |
572 | }, | |
573 | { | |
574 | .ctl_name = NET_TCP_DSACK, | |
575 | .procname = "tcp_dsack", | |
576 | .data = &sysctl_tcp_dsack, | |
577 | .maxlen = sizeof(int), | |
578 | .mode = 0644, | |
579 | .proc_handler = &proc_dointvec | |
580 | }, | |
581 | { | |
582 | .ctl_name = NET_TCP_MEM, | |
583 | .procname = "tcp_mem", | |
584 | .data = &sysctl_tcp_mem, | |
585 | .maxlen = sizeof(sysctl_tcp_mem), | |
586 | .mode = 0644, | |
587 | .proc_handler = &proc_dointvec | |
588 | }, | |
589 | { | |
590 | .ctl_name = NET_TCP_WMEM, | |
591 | .procname = "tcp_wmem", | |
592 | .data = &sysctl_tcp_wmem, | |
593 | .maxlen = sizeof(sysctl_tcp_wmem), | |
594 | .mode = 0644, | |
595 | .proc_handler = &proc_dointvec | |
596 | }, | |
597 | { | |
598 | .ctl_name = NET_TCP_RMEM, | |
599 | .procname = "tcp_rmem", | |
600 | .data = &sysctl_tcp_rmem, | |
601 | .maxlen = sizeof(sysctl_tcp_rmem), | |
602 | .mode = 0644, | |
603 | .proc_handler = &proc_dointvec | |
604 | }, | |
605 | { | |
606 | .ctl_name = NET_TCP_APP_WIN, | |
607 | .procname = "tcp_app_win", | |
608 | .data = &sysctl_tcp_app_win, | |
609 | .maxlen = sizeof(int), | |
610 | .mode = 0644, | |
611 | .proc_handler = &proc_dointvec | |
612 | }, | |
613 | { | |
614 | .ctl_name = NET_TCP_ADV_WIN_SCALE, | |
615 | .procname = "tcp_adv_win_scale", | |
616 | .data = &sysctl_tcp_adv_win_scale, | |
617 | .maxlen = sizeof(int), | |
618 | .mode = 0644, | |
619 | .proc_handler = &proc_dointvec | |
620 | }, | |
621 | { | |
622 | .ctl_name = NET_IPV4_ICMP_RATELIMIT, | |
623 | .procname = "icmp_ratelimit", | |
624 | .data = &sysctl_icmp_ratelimit, | |
625 | .maxlen = sizeof(int), | |
626 | .mode = 0644, | |
627 | .proc_handler = &proc_dointvec | |
628 | }, | |
629 | { | |
630 | .ctl_name = NET_IPV4_ICMP_RATEMASK, | |
631 | .procname = "icmp_ratemask", | |
632 | .data = &sysctl_icmp_ratemask, | |
633 | .maxlen = sizeof(int), | |
634 | .mode = 0644, | |
635 | .proc_handler = &proc_dointvec | |
636 | }, | |
637 | { | |
638 | .ctl_name = NET_TCP_TW_REUSE, | |
639 | .procname = "tcp_tw_reuse", | |
640 | .data = &sysctl_tcp_tw_reuse, | |
641 | .maxlen = sizeof(int), | |
642 | .mode = 0644, | |
643 | .proc_handler = &proc_dointvec | |
644 | }, | |
645 | { | |
646 | .ctl_name = NET_TCP_FRTO, | |
647 | .procname = "tcp_frto", | |
648 | .data = &sysctl_tcp_frto, | |
649 | .maxlen = sizeof(int), | |
650 | .mode = 0644, | |
651 | .proc_handler = &proc_dointvec | |
652 | }, | |
653 | { | |
654 | .ctl_name = NET_TCP_LOW_LATENCY, | |
655 | .procname = "tcp_low_latency", | |
656 | .data = &sysctl_tcp_low_latency, | |
657 | .maxlen = sizeof(int), | |
658 | .mode = 0644, | |
659 | .proc_handler = &proc_dointvec | |
660 | }, | |
661 | { | |
662 | .ctl_name = NET_IPV4_IPFRAG_SECRET_INTERVAL, | |
663 | .procname = "ipfrag_secret_interval", | |
664 | .data = &sysctl_ipfrag_secret_interval, | |
665 | .maxlen = sizeof(int), | |
666 | .mode = 0644, | |
667 | .proc_handler = &proc_dointvec_jiffies, | |
668 | .strategy = &sysctl_jiffies | |
669 | }, | |
89cee8b1 HX |
670 | { |
671 | .ctl_name = NET_IPV4_IPFRAG_MAX_DIST, | |
672 | .procname = "ipfrag_max_dist", | |
673 | .data = &sysctl_ipfrag_max_dist, | |
674 | .maxlen = sizeof(int), | |
675 | .mode = 0644, | |
676 | .proc_handler = &proc_dointvec_minmax, | |
677 | .extra1 = &zero | |
678 | }, | |
1da177e4 LT |
679 | { |
680 | .ctl_name = NET_TCP_NO_METRICS_SAVE, | |
681 | .procname = "tcp_no_metrics_save", | |
682 | .data = &sysctl_tcp_nometrics_save, | |
683 | .maxlen = sizeof(int), | |
684 | .mode = 0644, | |
685 | .proc_handler = &proc_dointvec, | |
686 | }, | |
1da177e4 LT |
687 | { |
688 | .ctl_name = NET_TCP_MODERATE_RCVBUF, | |
689 | .procname = "tcp_moderate_rcvbuf", | |
690 | .data = &sysctl_tcp_moderate_rcvbuf, | |
691 | .maxlen = sizeof(int), | |
692 | .mode = 0644, | |
693 | .proc_handler = &proc_dointvec, | |
694 | }, | |
695 | { | |
696 | .ctl_name = NET_TCP_TSO_WIN_DIVISOR, | |
697 | .procname = "tcp_tso_win_divisor", | |
698 | .data = &sysctl_tcp_tso_win_divisor, | |
699 | .maxlen = sizeof(int), | |
700 | .mode = 0644, | |
701 | .proc_handler = &proc_dointvec, | |
702 | }, | |
703 | { | |
317a76f9 SH |
704 | .ctl_name = NET_TCP_CONG_CONTROL, |
705 | .procname = "tcp_congestion_control", | |
1da177e4 | 706 | .mode = 0644, |
317a76f9 SH |
707 | .maxlen = TCP_CA_NAME_MAX, |
708 | .proc_handler = &proc_tcp_congestion_control, | |
709 | .strategy = &sysctl_tcp_congestion_control, | |
1da177e4 | 710 | }, |
9772efb9 SH |
711 | { |
712 | .ctl_name = NET_TCP_ABC, | |
713 | .procname = "tcp_abc", | |
714 | .data = &sysctl_tcp_abc, | |
715 | .maxlen = sizeof(int), | |
716 | .mode = 0644, | |
717 | .proc_handler = &proc_dointvec, | |
718 | }, | |
5d424d5a JH |
719 | { |
720 | .ctl_name = NET_TCP_MTU_PROBING, | |
721 | .procname = "tcp_mtu_probing", | |
722 | .data = &sysctl_tcp_mtu_probing, | |
723 | .maxlen = sizeof(int), | |
724 | .mode = 0644, | |
725 | .proc_handler = &proc_dointvec, | |
726 | }, | |
727 | { | |
728 | .ctl_name = NET_TCP_BASE_MSS, | |
729 | .procname = "tcp_base_mss", | |
730 | .data = &sysctl_tcp_base_mss, | |
731 | .maxlen = sizeof(int), | |
732 | .mode = 0644, | |
733 | .proc_handler = &proc_dointvec, | |
734 | }, | |
15d99e02 RJ |
735 | { |
736 | .ctl_name = NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS, | |
737 | .procname = "tcp_workaround_signed_windows", | |
738 | .data = &sysctl_tcp_workaround_signed_windows, | |
739 | .maxlen = sizeof(int), | |
740 | .mode = 0644, | |
741 | .proc_handler = &proc_dointvec | |
742 | }, | |
95937825 CL |
743 | #ifdef CONFIG_NET_DMA |
744 | { | |
745 | .ctl_name = NET_TCP_DMA_COPYBREAK, | |
746 | .procname = "tcp_dma_copybreak", | |
747 | .data = &sysctl_tcp_dma_copybreak, | |
748 | .maxlen = sizeof(int), | |
749 | .mode = 0644, | |
750 | .proc_handler = &proc_dointvec | |
751 | }, | |
752 | #endif | |
35089bb2 DM |
753 | { |
754 | .ctl_name = NET_TCP_SLOW_START_AFTER_IDLE, | |
755 | .procname = "tcp_slow_start_after_idle", | |
756 | .data = &sysctl_tcp_slow_start_after_idle, | |
757 | .maxlen = sizeof(int), | |
758 | .mode = 0644, | |
759 | .proc_handler = &proc_dointvec | |
760 | }, | |
446fda4f PM |
761 | #ifdef CONFIG_NETLABEL |
762 | { | |
763 | .ctl_name = NET_CIPSOV4_CACHE_ENABLE, | |
764 | .procname = "cipso_cache_enable", | |
765 | .data = &cipso_v4_cache_enabled, | |
766 | .maxlen = sizeof(int), | |
767 | .mode = 0644, | |
768 | .proc_handler = &proc_dointvec, | |
769 | }, | |
770 | { | |
771 | .ctl_name = NET_CIPSOV4_CACHE_BUCKET_SIZE, | |
772 | .procname = "cipso_cache_bucket_size", | |
773 | .data = &cipso_v4_cache_bucketsize, | |
774 | .maxlen = sizeof(int), | |
775 | .mode = 0644, | |
776 | .proc_handler = &proc_dointvec, | |
777 | }, | |
778 | { | |
779 | .ctl_name = NET_CIPSOV4_RBM_OPTFMT, | |
780 | .procname = "cipso_rbm_optfmt", | |
781 | .data = &cipso_v4_rbm_optfmt, | |
782 | .maxlen = sizeof(int), | |
783 | .mode = 0644, | |
784 | .proc_handler = &proc_dointvec, | |
785 | }, | |
786 | { | |
787 | .ctl_name = NET_CIPSOV4_RBM_STRICTVALID, | |
788 | .procname = "cipso_rbm_strictvalid", | |
789 | .data = &cipso_v4_rbm_strictvalid, | |
790 | .maxlen = sizeof(int), | |
791 | .mode = 0644, | |
792 | .proc_handler = &proc_dointvec, | |
793 | }, | |
794 | #endif /* CONFIG_NETLABEL */ | |
3ff825b2 SH |
795 | { |
796 | .ctl_name = NET_TCP_AVAIL_CONG_CONTROL, | |
797 | .procname = "tcp_available_congestion_control", | |
798 | .maxlen = TCP_CA_BUF_MAX, | |
799 | .mode = 0444, | |
800 | .proc_handler = &proc_tcp_available_congestion_control, | |
801 | }, | |
ce7bc3bf SH |
802 | { |
803 | .ctl_name = NET_TCP_ALLOWED_CONG_CONTROL, | |
804 | .procname = "tcp_allowed_congestion_control", | |
805 | .maxlen = TCP_CA_BUF_MAX, | |
806 | .mode = 0644, | |
807 | .proc_handler = &proc_allowed_congestion_control, | |
808 | .strategy = &strategy_allowed_congestion_control, | |
809 | }, | |
1da177e4 LT |
810 | { .ctl_name = 0 } |
811 | }; | |
812 | ||
813 | #endif /* CONFIG_SYSCTL */ | |
814 | ||
815 | EXPORT_SYMBOL(ipv4_config); |