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> | |
13 | #include <linux/config.h> | |
20380731 | 14 | #include <linux/igmp.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> | |
20 | ||
21 | /* From af_inet.c */ | |
22 | extern int sysctl_ip_nonlocal_bind; | |
23 | ||
1da177e4 LT |
24 | #ifdef CONFIG_SYSCTL |
25 | static int tcp_retr1_max = 255; | |
26 | static int ip_local_port_range_min[] = { 1, 1 }; | |
27 | static int ip_local_port_range_max[] = { 65535, 65535 }; | |
28 | #endif | |
29 | ||
30 | struct ipv4_config ipv4_config; | |
31 | ||
1da177e4 LT |
32 | #ifdef CONFIG_SYSCTL |
33 | ||
34 | static | |
35 | int ipv4_sysctl_forward(ctl_table *ctl, int write, struct file * filp, | |
36 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
37 | { | |
38 | int val = ipv4_devconf.forwarding; | |
39 | int ret; | |
40 | ||
41 | ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos); | |
42 | ||
43 | if (write && ipv4_devconf.forwarding != val) | |
44 | inet_forward_change(); | |
45 | ||
46 | return ret; | |
47 | } | |
48 | ||
49 | static int ipv4_sysctl_forward_strategy(ctl_table *table, | |
50 | int __user *name, int nlen, | |
51 | void __user *oldval, size_t __user *oldlenp, | |
52 | void __user *newval, size_t newlen, | |
53 | void **context) | |
54 | { | |
55 | int *valp = table->data; | |
56 | int new; | |
57 | ||
58 | if (!newval || !newlen) | |
59 | return 0; | |
60 | ||
61 | if (newlen != sizeof(int)) | |
62 | return -EINVAL; | |
63 | ||
64 | if (get_user(new, (int __user *)newval)) | |
65 | return -EFAULT; | |
66 | ||
67 | if (new == *valp) | |
68 | return 0; | |
69 | ||
70 | if (oldval && oldlenp) { | |
71 | size_t len; | |
72 | ||
73 | if (get_user(len, oldlenp)) | |
74 | return -EFAULT; | |
75 | ||
76 | if (len) { | |
77 | if (len > table->maxlen) | |
78 | len = table->maxlen; | |
79 | if (copy_to_user(oldval, valp, len)) | |
80 | return -EFAULT; | |
81 | if (put_user(len, oldlenp)) | |
82 | return -EFAULT; | |
83 | } | |
84 | } | |
85 | ||
86 | *valp = new; | |
87 | inet_forward_change(); | |
88 | return 1; | |
89 | } | |
90 | ||
317a76f9 SH |
91 | static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file * filp, |
92 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
93 | { | |
94 | char val[TCP_CA_NAME_MAX]; | |
95 | ctl_table tbl = { | |
96 | .data = val, | |
97 | .maxlen = TCP_CA_NAME_MAX, | |
98 | }; | |
99 | int ret; | |
100 | ||
101 | tcp_get_default_congestion_control(val); | |
102 | ||
103 | ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos); | |
104 | if (write && ret == 0) | |
105 | ret = tcp_set_default_congestion_control(val); | |
106 | return ret; | |
107 | } | |
108 | ||
20380731 ACM |
109 | static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name, |
110 | int nlen, void __user *oldval, | |
111 | size_t __user *oldlenp, | |
112 | void __user *newval, size_t newlen, | |
113 | void **context) | |
317a76f9 SH |
114 | { |
115 | char val[TCP_CA_NAME_MAX]; | |
116 | ctl_table tbl = { | |
117 | .data = val, | |
118 | .maxlen = TCP_CA_NAME_MAX, | |
119 | }; | |
120 | int ret; | |
121 | ||
122 | tcp_get_default_congestion_control(val); | |
123 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen, | |
124 | context); | |
125 | if (ret == 0 && newval && newlen) | |
126 | ret = tcp_set_default_congestion_control(val); | |
127 | return ret; | |
128 | } | |
129 | ||
130 | ||
1da177e4 LT |
131 | ctl_table ipv4_table[] = { |
132 | { | |
133 | .ctl_name = NET_IPV4_TCP_TIMESTAMPS, | |
134 | .procname = "tcp_timestamps", | |
135 | .data = &sysctl_tcp_timestamps, | |
136 | .maxlen = sizeof(int), | |
137 | .mode = 0644, | |
138 | .proc_handler = &proc_dointvec | |
139 | }, | |
140 | { | |
141 | .ctl_name = NET_IPV4_TCP_WINDOW_SCALING, | |
142 | .procname = "tcp_window_scaling", | |
143 | .data = &sysctl_tcp_window_scaling, | |
144 | .maxlen = sizeof(int), | |
145 | .mode = 0644, | |
146 | .proc_handler = &proc_dointvec | |
147 | }, | |
148 | { | |
149 | .ctl_name = NET_IPV4_TCP_SACK, | |
150 | .procname = "tcp_sack", | |
151 | .data = &sysctl_tcp_sack, | |
152 | .maxlen = sizeof(int), | |
153 | .mode = 0644, | |
154 | .proc_handler = &proc_dointvec | |
155 | }, | |
156 | { | |
157 | .ctl_name = NET_IPV4_TCP_RETRANS_COLLAPSE, | |
158 | .procname = "tcp_retrans_collapse", | |
159 | .data = &sysctl_tcp_retrans_collapse, | |
160 | .maxlen = sizeof(int), | |
161 | .mode = 0644, | |
162 | .proc_handler = &proc_dointvec | |
163 | }, | |
164 | { | |
165 | .ctl_name = NET_IPV4_FORWARD, | |
166 | .procname = "ip_forward", | |
167 | .data = &ipv4_devconf.forwarding, | |
168 | .maxlen = sizeof(int), | |
169 | .mode = 0644, | |
170 | .proc_handler = &ipv4_sysctl_forward, | |
171 | .strategy = &ipv4_sysctl_forward_strategy | |
172 | }, | |
173 | { | |
174 | .ctl_name = NET_IPV4_DEFAULT_TTL, | |
175 | .procname = "ip_default_ttl", | |
176 | .data = &sysctl_ip_default_ttl, | |
177 | .maxlen = sizeof(int), | |
178 | .mode = 0644, | |
179 | .proc_handler = &ipv4_doint_and_flush, | |
180 | .strategy = &ipv4_doint_and_flush_strategy, | |
181 | }, | |
182 | { | |
183 | .ctl_name = NET_IPV4_AUTOCONFIG, | |
184 | .procname = "ip_autoconfig", | |
185 | .data = &ipv4_config.autoconfig, | |
186 | .maxlen = sizeof(int), | |
187 | .mode = 0644, | |
188 | .proc_handler = &proc_dointvec | |
189 | }, | |
190 | { | |
191 | .ctl_name = NET_IPV4_NO_PMTU_DISC, | |
192 | .procname = "ip_no_pmtu_disc", | |
193 | .data = &ipv4_config.no_pmtu_disc, | |
194 | .maxlen = sizeof(int), | |
195 | .mode = 0644, | |
196 | .proc_handler = &proc_dointvec | |
197 | }, | |
198 | { | |
199 | .ctl_name = NET_IPV4_NONLOCAL_BIND, | |
200 | .procname = "ip_nonlocal_bind", | |
201 | .data = &sysctl_ip_nonlocal_bind, | |
202 | .maxlen = sizeof(int), | |
203 | .mode = 0644, | |
204 | .proc_handler = &proc_dointvec | |
205 | }, | |
206 | { | |
207 | .ctl_name = NET_IPV4_TCP_SYN_RETRIES, | |
208 | .procname = "tcp_syn_retries", | |
209 | .data = &sysctl_tcp_syn_retries, | |
210 | .maxlen = sizeof(int), | |
211 | .mode = 0644, | |
212 | .proc_handler = &proc_dointvec | |
213 | }, | |
214 | { | |
215 | .ctl_name = NET_TCP_SYNACK_RETRIES, | |
216 | .procname = "tcp_synack_retries", | |
217 | .data = &sysctl_tcp_synack_retries, | |
218 | .maxlen = sizeof(int), | |
219 | .mode = 0644, | |
220 | .proc_handler = &proc_dointvec | |
221 | }, | |
222 | { | |
223 | .ctl_name = NET_TCP_MAX_ORPHANS, | |
224 | .procname = "tcp_max_orphans", | |
225 | .data = &sysctl_tcp_max_orphans, | |
226 | .maxlen = sizeof(int), | |
227 | .mode = 0644, | |
228 | .proc_handler = &proc_dointvec | |
229 | }, | |
230 | { | |
231 | .ctl_name = NET_TCP_MAX_TW_BUCKETS, | |
232 | .procname = "tcp_max_tw_buckets", | |
295ff7ed | 233 | .data = &tcp_death_row.sysctl_max_tw_buckets, |
1da177e4 LT |
234 | .maxlen = sizeof(int), |
235 | .mode = 0644, | |
236 | .proc_handler = &proc_dointvec | |
237 | }, | |
238 | { | |
239 | .ctl_name = NET_IPV4_IPFRAG_HIGH_THRESH, | |
240 | .procname = "ipfrag_high_thresh", | |
241 | .data = &sysctl_ipfrag_high_thresh, | |
242 | .maxlen = sizeof(int), | |
243 | .mode = 0644, | |
244 | .proc_handler = &proc_dointvec | |
245 | }, | |
246 | { | |
247 | .ctl_name = NET_IPV4_IPFRAG_LOW_THRESH, | |
248 | .procname = "ipfrag_low_thresh", | |
249 | .data = &sysctl_ipfrag_low_thresh, | |
250 | .maxlen = sizeof(int), | |
251 | .mode = 0644, | |
252 | .proc_handler = &proc_dointvec | |
253 | }, | |
254 | { | |
255 | .ctl_name = NET_IPV4_DYNADDR, | |
256 | .procname = "ip_dynaddr", | |
257 | .data = &sysctl_ip_dynaddr, | |
258 | .maxlen = sizeof(int), | |
259 | .mode = 0644, | |
260 | .proc_handler = &proc_dointvec | |
261 | }, | |
262 | { | |
263 | .ctl_name = NET_IPV4_IPFRAG_TIME, | |
264 | .procname = "ipfrag_time", | |
265 | .data = &sysctl_ipfrag_time, | |
266 | .maxlen = sizeof(int), | |
267 | .mode = 0644, | |
268 | .proc_handler = &proc_dointvec_jiffies, | |
269 | .strategy = &sysctl_jiffies | |
270 | }, | |
271 | { | |
272 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_TIME, | |
273 | .procname = "tcp_keepalive_time", | |
274 | .data = &sysctl_tcp_keepalive_time, | |
275 | .maxlen = sizeof(int), | |
276 | .mode = 0644, | |
277 | .proc_handler = &proc_dointvec_jiffies, | |
278 | .strategy = &sysctl_jiffies | |
279 | }, | |
280 | { | |
281 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_PROBES, | |
282 | .procname = "tcp_keepalive_probes", | |
283 | .data = &sysctl_tcp_keepalive_probes, | |
284 | .maxlen = sizeof(int), | |
285 | .mode = 0644, | |
286 | .proc_handler = &proc_dointvec | |
287 | }, | |
288 | { | |
289 | .ctl_name = NET_IPV4_TCP_KEEPALIVE_INTVL, | |
290 | .procname = "tcp_keepalive_intvl", | |
291 | .data = &sysctl_tcp_keepalive_intvl, | |
292 | .maxlen = sizeof(int), | |
293 | .mode = 0644, | |
294 | .proc_handler = &proc_dointvec_jiffies, | |
295 | .strategy = &sysctl_jiffies | |
296 | }, | |
297 | { | |
298 | .ctl_name = NET_IPV4_TCP_RETRIES1, | |
299 | .procname = "tcp_retries1", | |
300 | .data = &sysctl_tcp_retries1, | |
301 | .maxlen = sizeof(int), | |
302 | .mode = 0644, | |
303 | .proc_handler = &proc_dointvec_minmax, | |
304 | .strategy = &sysctl_intvec, | |
305 | .extra2 = &tcp_retr1_max | |
306 | }, | |
307 | { | |
308 | .ctl_name = NET_IPV4_TCP_RETRIES2, | |
309 | .procname = "tcp_retries2", | |
310 | .data = &sysctl_tcp_retries2, | |
311 | .maxlen = sizeof(int), | |
312 | .mode = 0644, | |
313 | .proc_handler = &proc_dointvec | |
314 | }, | |
315 | { | |
316 | .ctl_name = NET_IPV4_TCP_FIN_TIMEOUT, | |
317 | .procname = "tcp_fin_timeout", | |
318 | .data = &sysctl_tcp_fin_timeout, | |
319 | .maxlen = sizeof(int), | |
320 | .mode = 0644, | |
321 | .proc_handler = &proc_dointvec_jiffies, | |
322 | .strategy = &sysctl_jiffies | |
323 | }, | |
324 | #ifdef CONFIG_SYN_COOKIES | |
325 | { | |
326 | .ctl_name = NET_TCP_SYNCOOKIES, | |
327 | .procname = "tcp_syncookies", | |
328 | .data = &sysctl_tcp_syncookies, | |
329 | .maxlen = sizeof(int), | |
330 | .mode = 0644, | |
331 | .proc_handler = &proc_dointvec | |
332 | }, | |
333 | #endif | |
334 | { | |
335 | .ctl_name = NET_TCP_TW_RECYCLE, | |
336 | .procname = "tcp_tw_recycle", | |
295ff7ed | 337 | .data = &tcp_death_row.sysctl_tw_recycle, |
1da177e4 LT |
338 | .maxlen = sizeof(int), |
339 | .mode = 0644, | |
340 | .proc_handler = &proc_dointvec | |
341 | }, | |
342 | { | |
343 | .ctl_name = NET_TCP_ABORT_ON_OVERFLOW, | |
344 | .procname = "tcp_abort_on_overflow", | |
345 | .data = &sysctl_tcp_abort_on_overflow, | |
346 | .maxlen = sizeof(int), | |
347 | .mode = 0644, | |
348 | .proc_handler = &proc_dointvec | |
349 | }, | |
350 | { | |
351 | .ctl_name = NET_TCP_STDURG, | |
352 | .procname = "tcp_stdurg", | |
353 | .data = &sysctl_tcp_stdurg, | |
354 | .maxlen = sizeof(int), | |
355 | .mode = 0644, | |
356 | .proc_handler = &proc_dointvec | |
357 | }, | |
358 | { | |
359 | .ctl_name = NET_TCP_RFC1337, | |
360 | .procname = "tcp_rfc1337", | |
361 | .data = &sysctl_tcp_rfc1337, | |
362 | .maxlen = sizeof(int), | |
363 | .mode = 0644, | |
364 | .proc_handler = &proc_dointvec | |
365 | }, | |
366 | { | |
367 | .ctl_name = NET_TCP_MAX_SYN_BACKLOG, | |
368 | .procname = "tcp_max_syn_backlog", | |
369 | .data = &sysctl_max_syn_backlog, | |
370 | .maxlen = sizeof(int), | |
371 | .mode = 0644, | |
372 | .proc_handler = &proc_dointvec | |
373 | }, | |
374 | { | |
375 | .ctl_name = NET_IPV4_LOCAL_PORT_RANGE, | |
376 | .procname = "ip_local_port_range", | |
377 | .data = &sysctl_local_port_range, | |
378 | .maxlen = sizeof(sysctl_local_port_range), | |
379 | .mode = 0644, | |
380 | .proc_handler = &proc_dointvec_minmax, | |
381 | .strategy = &sysctl_intvec, | |
382 | .extra1 = ip_local_port_range_min, | |
383 | .extra2 = ip_local_port_range_max | |
384 | }, | |
385 | { | |
386 | .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_ALL, | |
387 | .procname = "icmp_echo_ignore_all", | |
388 | .data = &sysctl_icmp_echo_ignore_all, | |
389 | .maxlen = sizeof(int), | |
390 | .mode = 0644, | |
391 | .proc_handler = &proc_dointvec | |
392 | }, | |
393 | { | |
394 | .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS, | |
395 | .procname = "icmp_echo_ignore_broadcasts", | |
396 | .data = &sysctl_icmp_echo_ignore_broadcasts, | |
397 | .maxlen = sizeof(int), | |
398 | .mode = 0644, | |
399 | .proc_handler = &proc_dointvec | |
400 | }, | |
401 | { | |
402 | .ctl_name = NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES, | |
403 | .procname = "icmp_ignore_bogus_error_responses", | |
404 | .data = &sysctl_icmp_ignore_bogus_error_responses, | |
405 | .maxlen = sizeof(int), | |
406 | .mode = 0644, | |
407 | .proc_handler = &proc_dointvec | |
408 | }, | |
1c2fb7f9 S |
409 | { |
410 | .ctl_name = NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR, | |
411 | .procname = "icmp_errors_use_inbound_ifaddr", | |
412 | .data = &sysctl_icmp_errors_use_inbound_ifaddr, | |
413 | .maxlen = sizeof(int), | |
414 | .mode = 0644, | |
415 | .proc_handler = &proc_dointvec | |
416 | }, | |
1da177e4 LT |
417 | { |
418 | .ctl_name = NET_IPV4_ROUTE, | |
419 | .procname = "route", | |
420 | .maxlen = 0, | |
421 | .mode = 0555, | |
422 | .child = ipv4_route_table | |
423 | }, | |
424 | #ifdef CONFIG_IP_MULTICAST | |
425 | { | |
426 | .ctl_name = NET_IPV4_IGMP_MAX_MEMBERSHIPS, | |
427 | .procname = "igmp_max_memberships", | |
428 | .data = &sysctl_igmp_max_memberships, | |
429 | .maxlen = sizeof(int), | |
430 | .mode = 0644, | |
431 | .proc_handler = &proc_dointvec | |
432 | }, | |
433 | ||
434 | #endif | |
435 | { | |
436 | .ctl_name = NET_IPV4_IGMP_MAX_MSF, | |
437 | .procname = "igmp_max_msf", | |
438 | .data = &sysctl_igmp_max_msf, | |
439 | .maxlen = sizeof(int), | |
440 | .mode = 0644, | |
441 | .proc_handler = &proc_dointvec | |
442 | }, | |
443 | { | |
444 | .ctl_name = NET_IPV4_INET_PEER_THRESHOLD, | |
445 | .procname = "inet_peer_threshold", | |
446 | .data = &inet_peer_threshold, | |
447 | .maxlen = sizeof(int), | |
448 | .mode = 0644, | |
449 | .proc_handler = &proc_dointvec | |
450 | }, | |
451 | { | |
452 | .ctl_name = NET_IPV4_INET_PEER_MINTTL, | |
453 | .procname = "inet_peer_minttl", | |
454 | .data = &inet_peer_minttl, | |
455 | .maxlen = sizeof(int), | |
456 | .mode = 0644, | |
457 | .proc_handler = &proc_dointvec_jiffies, | |
458 | .strategy = &sysctl_jiffies | |
459 | }, | |
460 | { | |
461 | .ctl_name = NET_IPV4_INET_PEER_MAXTTL, | |
462 | .procname = "inet_peer_maxttl", | |
463 | .data = &inet_peer_maxttl, | |
464 | .maxlen = sizeof(int), | |
465 | .mode = 0644, | |
466 | .proc_handler = &proc_dointvec_jiffies, | |
467 | .strategy = &sysctl_jiffies | |
468 | }, | |
469 | { | |
470 | .ctl_name = NET_IPV4_INET_PEER_GC_MINTIME, | |
471 | .procname = "inet_peer_gc_mintime", | |
472 | .data = &inet_peer_gc_mintime, | |
473 | .maxlen = sizeof(int), | |
474 | .mode = 0644, | |
475 | .proc_handler = &proc_dointvec_jiffies, | |
476 | .strategy = &sysctl_jiffies | |
477 | }, | |
478 | { | |
479 | .ctl_name = NET_IPV4_INET_PEER_GC_MAXTIME, | |
480 | .procname = "inet_peer_gc_maxtime", | |
481 | .data = &inet_peer_gc_maxtime, | |
482 | .maxlen = sizeof(int), | |
483 | .mode = 0644, | |
484 | .proc_handler = &proc_dointvec_jiffies, | |
485 | .strategy = &sysctl_jiffies | |
486 | }, | |
487 | { | |
488 | .ctl_name = NET_TCP_ORPHAN_RETRIES, | |
489 | .procname = "tcp_orphan_retries", | |
490 | .data = &sysctl_tcp_orphan_retries, | |
491 | .maxlen = sizeof(int), | |
492 | .mode = 0644, | |
493 | .proc_handler = &proc_dointvec | |
494 | }, | |
495 | { | |
496 | .ctl_name = NET_TCP_FACK, | |
497 | .procname = "tcp_fack", | |
498 | .data = &sysctl_tcp_fack, | |
499 | .maxlen = sizeof(int), | |
500 | .mode = 0644, | |
501 | .proc_handler = &proc_dointvec | |
502 | }, | |
503 | { | |
504 | .ctl_name = NET_TCP_REORDERING, | |
505 | .procname = "tcp_reordering", | |
506 | .data = &sysctl_tcp_reordering, | |
507 | .maxlen = sizeof(int), | |
508 | .mode = 0644, | |
509 | .proc_handler = &proc_dointvec | |
510 | }, | |
511 | { | |
512 | .ctl_name = NET_TCP_ECN, | |
513 | .procname = "tcp_ecn", | |
514 | .data = &sysctl_tcp_ecn, | |
515 | .maxlen = sizeof(int), | |
516 | .mode = 0644, | |
517 | .proc_handler = &proc_dointvec | |
518 | }, | |
519 | { | |
520 | .ctl_name = NET_TCP_DSACK, | |
521 | .procname = "tcp_dsack", | |
522 | .data = &sysctl_tcp_dsack, | |
523 | .maxlen = sizeof(int), | |
524 | .mode = 0644, | |
525 | .proc_handler = &proc_dointvec | |
526 | }, | |
527 | { | |
528 | .ctl_name = NET_TCP_MEM, | |
529 | .procname = "tcp_mem", | |
530 | .data = &sysctl_tcp_mem, | |
531 | .maxlen = sizeof(sysctl_tcp_mem), | |
532 | .mode = 0644, | |
533 | .proc_handler = &proc_dointvec | |
534 | }, | |
535 | { | |
536 | .ctl_name = NET_TCP_WMEM, | |
537 | .procname = "tcp_wmem", | |
538 | .data = &sysctl_tcp_wmem, | |
539 | .maxlen = sizeof(sysctl_tcp_wmem), | |
540 | .mode = 0644, | |
541 | .proc_handler = &proc_dointvec | |
542 | }, | |
543 | { | |
544 | .ctl_name = NET_TCP_RMEM, | |
545 | .procname = "tcp_rmem", | |
546 | .data = &sysctl_tcp_rmem, | |
547 | .maxlen = sizeof(sysctl_tcp_rmem), | |
548 | .mode = 0644, | |
549 | .proc_handler = &proc_dointvec | |
550 | }, | |
551 | { | |
552 | .ctl_name = NET_TCP_APP_WIN, | |
553 | .procname = "tcp_app_win", | |
554 | .data = &sysctl_tcp_app_win, | |
555 | .maxlen = sizeof(int), | |
556 | .mode = 0644, | |
557 | .proc_handler = &proc_dointvec | |
558 | }, | |
559 | { | |
560 | .ctl_name = NET_TCP_ADV_WIN_SCALE, | |
561 | .procname = "tcp_adv_win_scale", | |
562 | .data = &sysctl_tcp_adv_win_scale, | |
563 | .maxlen = sizeof(int), | |
564 | .mode = 0644, | |
565 | .proc_handler = &proc_dointvec | |
566 | }, | |
567 | { | |
568 | .ctl_name = NET_IPV4_ICMP_RATELIMIT, | |
569 | .procname = "icmp_ratelimit", | |
570 | .data = &sysctl_icmp_ratelimit, | |
571 | .maxlen = sizeof(int), | |
572 | .mode = 0644, | |
573 | .proc_handler = &proc_dointvec | |
574 | }, | |
575 | { | |
576 | .ctl_name = NET_IPV4_ICMP_RATEMASK, | |
577 | .procname = "icmp_ratemask", | |
578 | .data = &sysctl_icmp_ratemask, | |
579 | .maxlen = sizeof(int), | |
580 | .mode = 0644, | |
581 | .proc_handler = &proc_dointvec | |
582 | }, | |
583 | { | |
584 | .ctl_name = NET_TCP_TW_REUSE, | |
585 | .procname = "tcp_tw_reuse", | |
586 | .data = &sysctl_tcp_tw_reuse, | |
587 | .maxlen = sizeof(int), | |
588 | .mode = 0644, | |
589 | .proc_handler = &proc_dointvec | |
590 | }, | |
591 | { | |
592 | .ctl_name = NET_TCP_FRTO, | |
593 | .procname = "tcp_frto", | |
594 | .data = &sysctl_tcp_frto, | |
595 | .maxlen = sizeof(int), | |
596 | .mode = 0644, | |
597 | .proc_handler = &proc_dointvec | |
598 | }, | |
599 | { | |
600 | .ctl_name = NET_TCP_LOW_LATENCY, | |
601 | .procname = "tcp_low_latency", | |
602 | .data = &sysctl_tcp_low_latency, | |
603 | .maxlen = sizeof(int), | |
604 | .mode = 0644, | |
605 | .proc_handler = &proc_dointvec | |
606 | }, | |
607 | { | |
608 | .ctl_name = NET_IPV4_IPFRAG_SECRET_INTERVAL, | |
609 | .procname = "ipfrag_secret_interval", | |
610 | .data = &sysctl_ipfrag_secret_interval, | |
611 | .maxlen = sizeof(int), | |
612 | .mode = 0644, | |
613 | .proc_handler = &proc_dointvec_jiffies, | |
614 | .strategy = &sysctl_jiffies | |
615 | }, | |
616 | { | |
617 | .ctl_name = NET_TCP_NO_METRICS_SAVE, | |
618 | .procname = "tcp_no_metrics_save", | |
619 | .data = &sysctl_tcp_nometrics_save, | |
620 | .maxlen = sizeof(int), | |
621 | .mode = 0644, | |
622 | .proc_handler = &proc_dointvec, | |
623 | }, | |
1da177e4 LT |
624 | { |
625 | .ctl_name = NET_TCP_MODERATE_RCVBUF, | |
626 | .procname = "tcp_moderate_rcvbuf", | |
627 | .data = &sysctl_tcp_moderate_rcvbuf, | |
628 | .maxlen = sizeof(int), | |
629 | .mode = 0644, | |
630 | .proc_handler = &proc_dointvec, | |
631 | }, | |
632 | { | |
633 | .ctl_name = NET_TCP_TSO_WIN_DIVISOR, | |
634 | .procname = "tcp_tso_win_divisor", | |
635 | .data = &sysctl_tcp_tso_win_divisor, | |
636 | .maxlen = sizeof(int), | |
637 | .mode = 0644, | |
638 | .proc_handler = &proc_dointvec, | |
639 | }, | |
640 | { | |
317a76f9 SH |
641 | .ctl_name = NET_TCP_CONG_CONTROL, |
642 | .procname = "tcp_congestion_control", | |
1da177e4 | 643 | .mode = 0644, |
317a76f9 SH |
644 | .maxlen = TCP_CA_NAME_MAX, |
645 | .proc_handler = &proc_tcp_congestion_control, | |
646 | .strategy = &sysctl_tcp_congestion_control, | |
1da177e4 | 647 | }, |
317a76f9 | 648 | |
1da177e4 LT |
649 | { .ctl_name = 0 } |
650 | }; | |
651 | ||
652 | #endif /* CONFIG_SYSCTL */ | |
653 | ||
654 | EXPORT_SYMBOL(ipv4_config); |