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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> |
227b60f5 | 15 | #include <linux/seqlock.h> |
3e37c3f9 | 16 | #include <linux/init.h> |
1da177e4 | 17 | #include <net/snmp.h> |
20380731 | 18 | #include <net/icmp.h> |
1da177e4 LT |
19 | #include <net/ip.h> |
20 | #include <net/route.h> | |
21 | #include <net/tcp.h> | |
95766fff | 22 | #include <net/udp.h> |
446fda4f | 23 | #include <net/cipso_ipv4.h> |
04128f23 | 24 | #include <net/inet_frag.h> |
1da177e4 | 25 | |
89cee8b1 | 26 | static int zero; |
e905a9ed | 27 | static int tcp_retr1_max = 255; |
1da177e4 LT |
28 | static int ip_local_port_range_min[] = { 1, 1 }; |
29 | static int ip_local_port_range_max[] = { 65535, 65535 }; | |
1da177e4 | 30 | |
227b60f5 SH |
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) { | |
a25de534 | 62 | if (range[1] < range[0]) |
227b60f5 SH |
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) { | |
a25de534 | 90 | if (range[1] < range[0]) |
227b60f5 SH |
91 | ret = -EINVAL; |
92 | else | |
93 | set_local_port_range(range); | |
94 | } | |
95 | return ret; | |
96 | } | |
97 | ||
98 | ||
317a76f9 SH |
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 | ||
20380731 ACM |
117 | static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name, |
118 | int nlen, void __user *oldval, | |
119 | size_t __user *oldlenp, | |
1f29bcd7 | 120 | void __user *newval, size_t newlen) |
317a76f9 SH |
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); | |
1f29bcd7 | 130 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen); |
5487796f | 131 | if (ret == 1 && newval && newlen) |
317a76f9 SH |
132 | ret = tcp_set_default_congestion_control(val); |
133 | return ret; | |
134 | } | |
135 | ||
3ff825b2 SH |
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 | ||
ce7bc3bf SH |
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, | |
1f29bcd7 AD |
176 | void __user *newval, |
177 | size_t newlen) | |
ce7bc3bf SH |
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); | |
1f29bcd7 | 187 | ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen); |
16ca3f91 | 188 | if (ret == 1 && newval && newlen) |
ce7bc3bf SH |
189 | ret = tcp_set_allowed_congestion_control(tbl.data); |
190 | kfree(tbl.data); | |
191 | ||
192 | return ret; | |
193 | ||
194 | } | |
195 | ||
3e37c3f9 | 196 | static struct ctl_table ipv4_table[] = { |
e905a9ed | 197 | { |
1da177e4 LT |
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 | }, | |
e905a9ed | 205 | { |
1da177e4 LT |
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 | }, | |
e905a9ed | 213 | { |
1da177e4 LT |
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 | }, | |
e905a9ed | 221 | { |
1da177e4 LT |
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 | }, | |
e905a9ed | 229 | { |
1da177e4 LT |
230 | .ctl_name = NET_IPV4_DEFAULT_TTL, |
231 | .procname = "ip_default_ttl", | |
e905a9ed | 232 | .data = &sysctl_ip_default_ttl, |
1da177e4 LT |
233 | .maxlen = sizeof(int), |
234 | .mode = 0644, | |
235 | .proc_handler = &ipv4_doint_and_flush, | |
236 | .strategy = &ipv4_doint_and_flush_strategy, | |
237 | }, | |
e905a9ed | 238 | { |
1da177e4 LT |
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", | |
295ff7ed | 281 | .data = &tcp_death_row.sysctl_max_tw_buckets, |
1da177e4 LT |
282 | .maxlen = sizeof(int), |
283 | .mode = 0644, | |
284 | .proc_handler = &proc_dointvec | |
285 | }, | |
1da177e4 LT |
286 | { |
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 | }, | |
1da177e4 LT |
294 | { |
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", | |
295ff7ed | 360 | .data = &tcp_death_row.sysctl_tw_recycle, |
1da177e4 LT |
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, | |
227b60f5 SH |
403 | .proc_handler = &ipv4_local_port_range, |
404 | .strategy = &ipv4_sysctl_local_port_range, | |
1da177e4 LT |
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 | }, | |
1c2fb7f9 S |
430 | { |
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 | }, | |
1da177e4 LT |
438 | { |
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 | }, | |
3cfe3baa IJ |
620 | { |
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 | }, | |
1da177e4 LT |
628 | { |
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 | }, | |
1da177e4 LT |
636 | { |
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 | }, | |
1da177e4 LT |
644 | { |
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 | { | |
317a76f9 SH |
661 | .ctl_name = NET_TCP_CONG_CONTROL, |
662 | .procname = "tcp_congestion_control", | |
1da177e4 | 663 | .mode = 0644, |
317a76f9 SH |
664 | .maxlen = TCP_CA_NAME_MAX, |
665 | .proc_handler = &proc_tcp_congestion_control, | |
666 | .strategy = &sysctl_tcp_congestion_control, | |
1da177e4 | 667 | }, |
9772efb9 SH |
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 | }, | |
5d424d5a JH |
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 | }, | |
e905a9ed | 692 | { |
15d99e02 RJ |
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 | }, | |
95937825 CL |
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 | |
35089bb2 DM |
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 | }, | |
446fda4f PM |
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 */ | |
3ff825b2 | 752 | { |
3ff825b2 SH |
753 | .procname = "tcp_available_congestion_control", |
754 | .maxlen = TCP_CA_BUF_MAX, | |
755 | .mode = 0444, | |
756 | .proc_handler = &proc_tcp_available_congestion_control, | |
757 | }, | |
ce7bc3bf SH |
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 | }, | |
886236c1 JH |
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 | }, | |
95766fff HA |
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 | }, | |
1da177e4 LT |
804 | { .ctl_name = 0 } |
805 | }; | |
3e37c3f9 | 806 | |
3d7cc2ba | 807 | struct ctl_path net_ipv4_ctl_path[] = { |
3e37c3f9 PE |
808 | { .procname = "net", .ctl_name = CTL_NET, }, |
809 | { .procname = "ipv4", .ctl_name = NET_IPV4, }, | |
810 | { }, | |
811 | }; | |
3d7cc2ba | 812 | EXPORT_SYMBOL_GPL(net_ipv4_ctl_path); |
3e37c3f9 PE |
813 | |
814 | static __init int sysctl_ipv4_init(void) | |
815 | { | |
816 | struct ctl_table_header *hdr; | |
817 | ||
3d7cc2ba | 818 | hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table); |
3e37c3f9 PE |
819 | return hdr == NULL ? -ENOMEM : 0; |
820 | } | |
821 | ||
822 | __initcall(sysctl_ipv4_init); |