Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem. | |
3 | * | |
1da177e4 LT |
4 | * Begun April 1, 1996, Mike Shaver. |
5 | * Added /proc/sys/net/ipv4 directory entry (empty =) ). [MS] | |
6 | */ | |
7 | ||
8 | #include <linux/mm.h> | |
9 | #include <linux/module.h> | |
10 | #include <linux/sysctl.h> | |
20380731 | 11 | #include <linux/igmp.h> |
14c85021 | 12 | #include <linux/inetdevice.h> |
227b60f5 | 13 | #include <linux/seqlock.h> |
3e37c3f9 | 14 | #include <linux/init.h> |
5a0e3ad6 | 15 | #include <linux/slab.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> | |
95766fff | 21 | #include <net/udp.h> |
446fda4f | 22 | #include <net/cipso_ipv4.h> |
04128f23 | 23 | #include <net/inet_frag.h> |
1da177e4 | 24 | |
89cee8b1 | 25 | static int zero; |
e905a9ed | 26 | static int tcp_retr1_max = 255; |
1da177e4 LT |
27 | static int ip_local_port_range_min[] = { 1, 1 }; |
28 | static int ip_local_port_range_max[] = { 65535, 65535 }; | |
1da177e4 | 29 | |
227b60f5 SH |
30 | /* Update system visible IP port range */ |
31 | static void set_local_port_range(int range[2]) | |
32 | { | |
3c689b73 ED |
33 | write_seqlock(&sysctl_local_ports.lock); |
34 | sysctl_local_ports.range[0] = range[0]; | |
35 | sysctl_local_ports.range[1] = range[1]; | |
36 | write_sequnlock(&sysctl_local_ports.lock); | |
227b60f5 SH |
37 | } |
38 | ||
39 | /* Validate changes from /proc interface. */ | |
8d65af78 | 40 | static int ipv4_local_port_range(ctl_table *table, int write, |
227b60f5 SH |
41 | void __user *buffer, |
42 | size_t *lenp, loff_t *ppos) | |
43 | { | |
44 | int ret; | |
3c689b73 | 45 | int range[2]; |
227b60f5 SH |
46 | ctl_table tmp = { |
47 | .data = &range, | |
48 | .maxlen = sizeof(range), | |
49 | .mode = table->mode, | |
50 | .extra1 = &ip_local_port_range_min, | |
51 | .extra2 = &ip_local_port_range_max, | |
52 | }; | |
53 | ||
3c689b73 | 54 | inet_get_local_port_range(range, range + 1); |
8d65af78 | 55 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
227b60f5 SH |
56 | |
57 | if (write && ret == 0) { | |
a25de534 | 58 | if (range[1] < range[0]) |
227b60f5 SH |
59 | ret = -EINVAL; |
60 | else | |
61 | set_local_port_range(range); | |
62 | } | |
63 | ||
64 | return ret; | |
65 | } | |
66 | ||
8d65af78 | 67 | static int proc_tcp_congestion_control(ctl_table *ctl, int write, |
317a76f9 SH |
68 | void __user *buffer, size_t *lenp, loff_t *ppos) |
69 | { | |
70 | char val[TCP_CA_NAME_MAX]; | |
71 | ctl_table tbl = { | |
72 | .data = val, | |
73 | .maxlen = TCP_CA_NAME_MAX, | |
74 | }; | |
75 | int ret; | |
76 | ||
77 | tcp_get_default_congestion_control(val); | |
78 | ||
8d65af78 | 79 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
317a76f9 SH |
80 | if (write && ret == 0) |
81 | ret = tcp_set_default_congestion_control(val); | |
82 | return ret; | |
83 | } | |
84 | ||
3ff825b2 | 85 | static int proc_tcp_available_congestion_control(ctl_table *ctl, |
8d65af78 | 86 | int write, |
3ff825b2 SH |
87 | void __user *buffer, size_t *lenp, |
88 | loff_t *ppos) | |
89 | { | |
90 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; | |
91 | int ret; | |
92 | ||
93 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
94 | if (!tbl.data) | |
95 | return -ENOMEM; | |
96 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); | |
8d65af78 | 97 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
3ff825b2 SH |
98 | kfree(tbl.data); |
99 | return ret; | |
100 | } | |
101 | ||
ce7bc3bf | 102 | static int proc_allowed_congestion_control(ctl_table *ctl, |
8d65af78 | 103 | int write, |
ce7bc3bf SH |
104 | void __user *buffer, size_t *lenp, |
105 | loff_t *ppos) | |
106 | { | |
107 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; | |
108 | int ret; | |
109 | ||
110 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
111 | if (!tbl.data) | |
112 | return -ENOMEM; | |
113 | ||
114 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); | |
8d65af78 | 115 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
ce7bc3bf SH |
116 | if (write && ret == 0) |
117 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
118 | kfree(tbl.data); | |
119 | return ret; | |
120 | } | |
121 | ||
3e37c3f9 | 122 | static struct ctl_table ipv4_table[] = { |
e905a9ed | 123 | { |
1da177e4 LT |
124 | .procname = "tcp_timestamps", |
125 | .data = &sysctl_tcp_timestamps, | |
126 | .maxlen = sizeof(int), | |
127 | .mode = 0644, | |
6d9f239a | 128 | .proc_handler = proc_dointvec |
1da177e4 | 129 | }, |
e905a9ed | 130 | { |
1da177e4 LT |
131 | .procname = "tcp_window_scaling", |
132 | .data = &sysctl_tcp_window_scaling, | |
133 | .maxlen = sizeof(int), | |
134 | .mode = 0644, | |
6d9f239a | 135 | .proc_handler = proc_dointvec |
1da177e4 | 136 | }, |
e905a9ed | 137 | { |
1da177e4 LT |
138 | .procname = "tcp_sack", |
139 | .data = &sysctl_tcp_sack, | |
140 | .maxlen = sizeof(int), | |
141 | .mode = 0644, | |
6d9f239a | 142 | .proc_handler = proc_dointvec |
1da177e4 | 143 | }, |
e905a9ed | 144 | { |
1da177e4 LT |
145 | .procname = "tcp_retrans_collapse", |
146 | .data = &sysctl_tcp_retrans_collapse, | |
147 | .maxlen = sizeof(int), | |
148 | .mode = 0644, | |
6d9f239a | 149 | .proc_handler = proc_dointvec |
1da177e4 | 150 | }, |
e905a9ed | 151 | { |
1da177e4 | 152 | .procname = "ip_default_ttl", |
e905a9ed | 153 | .data = &sysctl_ip_default_ttl, |
1da177e4 LT |
154 | .maxlen = sizeof(int), |
155 | .mode = 0644, | |
6d9f239a | 156 | .proc_handler = ipv4_doint_and_flush, |
adf044c8 | 157 | .extra2 = &init_net, |
1da177e4 | 158 | }, |
e905a9ed | 159 | { |
1da177e4 LT |
160 | .procname = "ip_no_pmtu_disc", |
161 | .data = &ipv4_config.no_pmtu_disc, | |
162 | .maxlen = sizeof(int), | |
163 | .mode = 0644, | |
6d9f239a | 164 | .proc_handler = proc_dointvec |
1da177e4 LT |
165 | }, |
166 | { | |
1da177e4 LT |
167 | .procname = "ip_nonlocal_bind", |
168 | .data = &sysctl_ip_nonlocal_bind, | |
169 | .maxlen = sizeof(int), | |
170 | .mode = 0644, | |
6d9f239a | 171 | .proc_handler = proc_dointvec |
1da177e4 LT |
172 | }, |
173 | { | |
1da177e4 LT |
174 | .procname = "tcp_syn_retries", |
175 | .data = &sysctl_tcp_syn_retries, | |
176 | .maxlen = sizeof(int), | |
177 | .mode = 0644, | |
6d9f239a | 178 | .proc_handler = proc_dointvec |
1da177e4 LT |
179 | }, |
180 | { | |
1da177e4 LT |
181 | .procname = "tcp_synack_retries", |
182 | .data = &sysctl_tcp_synack_retries, | |
183 | .maxlen = sizeof(int), | |
184 | .mode = 0644, | |
6d9f239a | 185 | .proc_handler = proc_dointvec |
1da177e4 LT |
186 | }, |
187 | { | |
1da177e4 LT |
188 | .procname = "tcp_max_orphans", |
189 | .data = &sysctl_tcp_max_orphans, | |
190 | .maxlen = sizeof(int), | |
191 | .mode = 0644, | |
6d9f239a | 192 | .proc_handler = proc_dointvec |
1da177e4 LT |
193 | }, |
194 | { | |
1da177e4 | 195 | .procname = "tcp_max_tw_buckets", |
295ff7ed | 196 | .data = &tcp_death_row.sysctl_max_tw_buckets, |
1da177e4 LT |
197 | .maxlen = sizeof(int), |
198 | .mode = 0644, | |
6d9f239a | 199 | .proc_handler = proc_dointvec |
1da177e4 | 200 | }, |
1da177e4 | 201 | { |
1da177e4 LT |
202 | .procname = "ip_dynaddr", |
203 | .data = &sysctl_ip_dynaddr, | |
204 | .maxlen = sizeof(int), | |
205 | .mode = 0644, | |
6d9f239a | 206 | .proc_handler = proc_dointvec |
1da177e4 | 207 | }, |
1da177e4 | 208 | { |
1da177e4 LT |
209 | .procname = "tcp_keepalive_time", |
210 | .data = &sysctl_tcp_keepalive_time, | |
211 | .maxlen = sizeof(int), | |
212 | .mode = 0644, | |
6d9f239a | 213 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
214 | }, |
215 | { | |
1da177e4 LT |
216 | .procname = "tcp_keepalive_probes", |
217 | .data = &sysctl_tcp_keepalive_probes, | |
218 | .maxlen = sizeof(int), | |
219 | .mode = 0644, | |
6d9f239a | 220 | .proc_handler = proc_dointvec |
1da177e4 LT |
221 | }, |
222 | { | |
1da177e4 LT |
223 | .procname = "tcp_keepalive_intvl", |
224 | .data = &sysctl_tcp_keepalive_intvl, | |
225 | .maxlen = sizeof(int), | |
226 | .mode = 0644, | |
6d9f239a | 227 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
228 | }, |
229 | { | |
1da177e4 LT |
230 | .procname = "tcp_retries1", |
231 | .data = &sysctl_tcp_retries1, | |
232 | .maxlen = sizeof(int), | |
233 | .mode = 0644, | |
6d9f239a | 234 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
235 | .extra2 = &tcp_retr1_max |
236 | }, | |
237 | { | |
1da177e4 LT |
238 | .procname = "tcp_retries2", |
239 | .data = &sysctl_tcp_retries2, | |
240 | .maxlen = sizeof(int), | |
241 | .mode = 0644, | |
6d9f239a | 242 | .proc_handler = proc_dointvec |
1da177e4 LT |
243 | }, |
244 | { | |
1da177e4 LT |
245 | .procname = "tcp_fin_timeout", |
246 | .data = &sysctl_tcp_fin_timeout, | |
247 | .maxlen = sizeof(int), | |
248 | .mode = 0644, | |
6d9f239a | 249 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
250 | }, |
251 | #ifdef CONFIG_SYN_COOKIES | |
252 | { | |
1da177e4 LT |
253 | .procname = "tcp_syncookies", |
254 | .data = &sysctl_tcp_syncookies, | |
255 | .maxlen = sizeof(int), | |
256 | .mode = 0644, | |
6d9f239a | 257 | .proc_handler = proc_dointvec |
1da177e4 LT |
258 | }, |
259 | #endif | |
260 | { | |
1da177e4 | 261 | .procname = "tcp_tw_recycle", |
295ff7ed | 262 | .data = &tcp_death_row.sysctl_tw_recycle, |
1da177e4 LT |
263 | .maxlen = sizeof(int), |
264 | .mode = 0644, | |
6d9f239a | 265 | .proc_handler = proc_dointvec |
1da177e4 LT |
266 | }, |
267 | { | |
1da177e4 LT |
268 | .procname = "tcp_abort_on_overflow", |
269 | .data = &sysctl_tcp_abort_on_overflow, | |
270 | .maxlen = sizeof(int), | |
271 | .mode = 0644, | |
6d9f239a | 272 | .proc_handler = proc_dointvec |
1da177e4 LT |
273 | }, |
274 | { | |
1da177e4 LT |
275 | .procname = "tcp_stdurg", |
276 | .data = &sysctl_tcp_stdurg, | |
277 | .maxlen = sizeof(int), | |
278 | .mode = 0644, | |
6d9f239a | 279 | .proc_handler = proc_dointvec |
1da177e4 LT |
280 | }, |
281 | { | |
1da177e4 LT |
282 | .procname = "tcp_rfc1337", |
283 | .data = &sysctl_tcp_rfc1337, | |
284 | .maxlen = sizeof(int), | |
285 | .mode = 0644, | |
6d9f239a | 286 | .proc_handler = proc_dointvec |
1da177e4 LT |
287 | }, |
288 | { | |
1da177e4 LT |
289 | .procname = "tcp_max_syn_backlog", |
290 | .data = &sysctl_max_syn_backlog, | |
291 | .maxlen = sizeof(int), | |
292 | .mode = 0644, | |
6d9f239a | 293 | .proc_handler = proc_dointvec |
1da177e4 LT |
294 | }, |
295 | { | |
1da177e4 | 296 | .procname = "ip_local_port_range", |
3c689b73 ED |
297 | .data = &sysctl_local_ports.range, |
298 | .maxlen = sizeof(sysctl_local_ports.range), | |
1da177e4 | 299 | .mode = 0644, |
6d9f239a | 300 | .proc_handler = ipv4_local_port_range, |
1da177e4 | 301 | }, |
1da177e4 LT |
302 | #ifdef CONFIG_IP_MULTICAST |
303 | { | |
1da177e4 LT |
304 | .procname = "igmp_max_memberships", |
305 | .data = &sysctl_igmp_max_memberships, | |
306 | .maxlen = sizeof(int), | |
307 | .mode = 0644, | |
6d9f239a | 308 | .proc_handler = proc_dointvec |
1da177e4 LT |
309 | }, |
310 | ||
311 | #endif | |
312 | { | |
1da177e4 LT |
313 | .procname = "igmp_max_msf", |
314 | .data = &sysctl_igmp_max_msf, | |
315 | .maxlen = sizeof(int), | |
316 | .mode = 0644, | |
6d9f239a | 317 | .proc_handler = proc_dointvec |
1da177e4 LT |
318 | }, |
319 | { | |
1da177e4 LT |
320 | .procname = "inet_peer_threshold", |
321 | .data = &inet_peer_threshold, | |
322 | .maxlen = sizeof(int), | |
323 | .mode = 0644, | |
6d9f239a | 324 | .proc_handler = proc_dointvec |
1da177e4 LT |
325 | }, |
326 | { | |
1da177e4 LT |
327 | .procname = "inet_peer_minttl", |
328 | .data = &inet_peer_minttl, | |
329 | .maxlen = sizeof(int), | |
330 | .mode = 0644, | |
6d9f239a | 331 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
332 | }, |
333 | { | |
1da177e4 LT |
334 | .procname = "inet_peer_maxttl", |
335 | .data = &inet_peer_maxttl, | |
336 | .maxlen = sizeof(int), | |
337 | .mode = 0644, | |
6d9f239a | 338 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
339 | }, |
340 | { | |
1da177e4 LT |
341 | .procname = "inet_peer_gc_mintime", |
342 | .data = &inet_peer_gc_mintime, | |
343 | .maxlen = sizeof(int), | |
344 | .mode = 0644, | |
6d9f239a | 345 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
346 | }, |
347 | { | |
1da177e4 LT |
348 | .procname = "inet_peer_gc_maxtime", |
349 | .data = &inet_peer_gc_maxtime, | |
350 | .maxlen = sizeof(int), | |
351 | .mode = 0644, | |
6d9f239a | 352 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
353 | }, |
354 | { | |
1da177e4 LT |
355 | .procname = "tcp_orphan_retries", |
356 | .data = &sysctl_tcp_orphan_retries, | |
357 | .maxlen = sizeof(int), | |
358 | .mode = 0644, | |
6d9f239a | 359 | .proc_handler = proc_dointvec |
1da177e4 LT |
360 | }, |
361 | { | |
1da177e4 LT |
362 | .procname = "tcp_fack", |
363 | .data = &sysctl_tcp_fack, | |
364 | .maxlen = sizeof(int), | |
365 | .mode = 0644, | |
6d9f239a | 366 | .proc_handler = proc_dointvec |
1da177e4 LT |
367 | }, |
368 | { | |
1da177e4 LT |
369 | .procname = "tcp_reordering", |
370 | .data = &sysctl_tcp_reordering, | |
371 | .maxlen = sizeof(int), | |
372 | .mode = 0644, | |
6d9f239a | 373 | .proc_handler = proc_dointvec |
1da177e4 LT |
374 | }, |
375 | { | |
1da177e4 LT |
376 | .procname = "tcp_ecn", |
377 | .data = &sysctl_tcp_ecn, | |
378 | .maxlen = sizeof(int), | |
379 | .mode = 0644, | |
6d9f239a | 380 | .proc_handler = proc_dointvec |
1da177e4 LT |
381 | }, |
382 | { | |
1da177e4 LT |
383 | .procname = "tcp_dsack", |
384 | .data = &sysctl_tcp_dsack, | |
385 | .maxlen = sizeof(int), | |
386 | .mode = 0644, | |
6d9f239a | 387 | .proc_handler = proc_dointvec |
1da177e4 LT |
388 | }, |
389 | { | |
1da177e4 LT |
390 | .procname = "tcp_mem", |
391 | .data = &sysctl_tcp_mem, | |
392 | .maxlen = sizeof(sysctl_tcp_mem), | |
393 | .mode = 0644, | |
6d9f239a | 394 | .proc_handler = proc_dointvec |
1da177e4 LT |
395 | }, |
396 | { | |
1da177e4 LT |
397 | .procname = "tcp_wmem", |
398 | .data = &sysctl_tcp_wmem, | |
399 | .maxlen = sizeof(sysctl_tcp_wmem), | |
400 | .mode = 0644, | |
6d9f239a | 401 | .proc_handler = proc_dointvec |
1da177e4 LT |
402 | }, |
403 | { | |
1da177e4 LT |
404 | .procname = "tcp_rmem", |
405 | .data = &sysctl_tcp_rmem, | |
406 | .maxlen = sizeof(sysctl_tcp_rmem), | |
407 | .mode = 0644, | |
6d9f239a | 408 | .proc_handler = proc_dointvec |
1da177e4 LT |
409 | }, |
410 | { | |
1da177e4 LT |
411 | .procname = "tcp_app_win", |
412 | .data = &sysctl_tcp_app_win, | |
413 | .maxlen = sizeof(int), | |
414 | .mode = 0644, | |
6d9f239a | 415 | .proc_handler = proc_dointvec |
1da177e4 LT |
416 | }, |
417 | { | |
1da177e4 LT |
418 | .procname = "tcp_adv_win_scale", |
419 | .data = &sysctl_tcp_adv_win_scale, | |
420 | .maxlen = sizeof(int), | |
421 | .mode = 0644, | |
6d9f239a | 422 | .proc_handler = proc_dointvec |
1da177e4 | 423 | }, |
1da177e4 | 424 | { |
1da177e4 LT |
425 | .procname = "tcp_tw_reuse", |
426 | .data = &sysctl_tcp_tw_reuse, | |
427 | .maxlen = sizeof(int), | |
428 | .mode = 0644, | |
6d9f239a | 429 | .proc_handler = proc_dointvec |
1da177e4 LT |
430 | }, |
431 | { | |
1da177e4 LT |
432 | .procname = "tcp_frto", |
433 | .data = &sysctl_tcp_frto, | |
434 | .maxlen = sizeof(int), | |
435 | .mode = 0644, | |
6d9f239a | 436 | .proc_handler = proc_dointvec |
1da177e4 | 437 | }, |
3cfe3baa | 438 | { |
3cfe3baa IJ |
439 | .procname = "tcp_frto_response", |
440 | .data = &sysctl_tcp_frto_response, | |
441 | .maxlen = sizeof(int), | |
442 | .mode = 0644, | |
6d9f239a | 443 | .proc_handler = proc_dointvec |
3cfe3baa | 444 | }, |
1da177e4 | 445 | { |
1da177e4 LT |
446 | .procname = "tcp_low_latency", |
447 | .data = &sysctl_tcp_low_latency, | |
448 | .maxlen = sizeof(int), | |
449 | .mode = 0644, | |
6d9f239a | 450 | .proc_handler = proc_dointvec |
1da177e4 | 451 | }, |
1da177e4 | 452 | { |
1da177e4 LT |
453 | .procname = "tcp_no_metrics_save", |
454 | .data = &sysctl_tcp_nometrics_save, | |
455 | .maxlen = sizeof(int), | |
456 | .mode = 0644, | |
6d9f239a | 457 | .proc_handler = proc_dointvec, |
1da177e4 | 458 | }, |
1da177e4 | 459 | { |
1da177e4 LT |
460 | .procname = "tcp_moderate_rcvbuf", |
461 | .data = &sysctl_tcp_moderate_rcvbuf, | |
462 | .maxlen = sizeof(int), | |
463 | .mode = 0644, | |
6d9f239a | 464 | .proc_handler = proc_dointvec, |
1da177e4 LT |
465 | }, |
466 | { | |
1da177e4 LT |
467 | .procname = "tcp_tso_win_divisor", |
468 | .data = &sysctl_tcp_tso_win_divisor, | |
469 | .maxlen = sizeof(int), | |
470 | .mode = 0644, | |
6d9f239a | 471 | .proc_handler = proc_dointvec, |
1da177e4 LT |
472 | }, |
473 | { | |
317a76f9 | 474 | .procname = "tcp_congestion_control", |
1da177e4 | 475 | .mode = 0644, |
317a76f9 | 476 | .maxlen = TCP_CA_NAME_MAX, |
6d9f239a | 477 | .proc_handler = proc_tcp_congestion_control, |
1da177e4 | 478 | }, |
9772efb9 | 479 | { |
9772efb9 SH |
480 | .procname = "tcp_abc", |
481 | .data = &sysctl_tcp_abc, | |
482 | .maxlen = sizeof(int), | |
483 | .mode = 0644, | |
6d9f239a | 484 | .proc_handler = proc_dointvec, |
9772efb9 | 485 | }, |
5d424d5a | 486 | { |
5d424d5a JH |
487 | .procname = "tcp_mtu_probing", |
488 | .data = &sysctl_tcp_mtu_probing, | |
489 | .maxlen = sizeof(int), | |
490 | .mode = 0644, | |
6d9f239a | 491 | .proc_handler = proc_dointvec, |
5d424d5a JH |
492 | }, |
493 | { | |
5d424d5a JH |
494 | .procname = "tcp_base_mss", |
495 | .data = &sysctl_tcp_base_mss, | |
496 | .maxlen = sizeof(int), | |
497 | .mode = 0644, | |
6d9f239a | 498 | .proc_handler = proc_dointvec, |
5d424d5a | 499 | }, |
e905a9ed | 500 | { |
15d99e02 RJ |
501 | .procname = "tcp_workaround_signed_windows", |
502 | .data = &sysctl_tcp_workaround_signed_windows, | |
503 | .maxlen = sizeof(int), | |
504 | .mode = 0644, | |
6d9f239a | 505 | .proc_handler = proc_dointvec |
15d99e02 | 506 | }, |
95937825 CL |
507 | #ifdef CONFIG_NET_DMA |
508 | { | |
95937825 CL |
509 | .procname = "tcp_dma_copybreak", |
510 | .data = &sysctl_tcp_dma_copybreak, | |
511 | .maxlen = sizeof(int), | |
512 | .mode = 0644, | |
6d9f239a | 513 | .proc_handler = proc_dointvec |
95937825 CL |
514 | }, |
515 | #endif | |
35089bb2 | 516 | { |
35089bb2 DM |
517 | .procname = "tcp_slow_start_after_idle", |
518 | .data = &sysctl_tcp_slow_start_after_idle, | |
519 | .maxlen = sizeof(int), | |
520 | .mode = 0644, | |
6d9f239a | 521 | .proc_handler = proc_dointvec |
35089bb2 | 522 | }, |
446fda4f PM |
523 | #ifdef CONFIG_NETLABEL |
524 | { | |
446fda4f PM |
525 | .procname = "cipso_cache_enable", |
526 | .data = &cipso_v4_cache_enabled, | |
527 | .maxlen = sizeof(int), | |
528 | .mode = 0644, | |
6d9f239a | 529 | .proc_handler = proc_dointvec, |
446fda4f PM |
530 | }, |
531 | { | |
446fda4f PM |
532 | .procname = "cipso_cache_bucket_size", |
533 | .data = &cipso_v4_cache_bucketsize, | |
534 | .maxlen = sizeof(int), | |
535 | .mode = 0644, | |
6d9f239a | 536 | .proc_handler = proc_dointvec, |
446fda4f PM |
537 | }, |
538 | { | |
446fda4f PM |
539 | .procname = "cipso_rbm_optfmt", |
540 | .data = &cipso_v4_rbm_optfmt, | |
541 | .maxlen = sizeof(int), | |
542 | .mode = 0644, | |
6d9f239a | 543 | .proc_handler = proc_dointvec, |
446fda4f PM |
544 | }, |
545 | { | |
446fda4f PM |
546 | .procname = "cipso_rbm_strictvalid", |
547 | .data = &cipso_v4_rbm_strictvalid, | |
548 | .maxlen = sizeof(int), | |
549 | .mode = 0644, | |
6d9f239a | 550 | .proc_handler = proc_dointvec, |
446fda4f PM |
551 | }, |
552 | #endif /* CONFIG_NETLABEL */ | |
3ff825b2 | 553 | { |
3ff825b2 SH |
554 | .procname = "tcp_available_congestion_control", |
555 | .maxlen = TCP_CA_BUF_MAX, | |
556 | .mode = 0444, | |
6d9f239a | 557 | .proc_handler = proc_tcp_available_congestion_control, |
3ff825b2 | 558 | }, |
ce7bc3bf | 559 | { |
ce7bc3bf SH |
560 | .procname = "tcp_allowed_congestion_control", |
561 | .maxlen = TCP_CA_BUF_MAX, | |
562 | .mode = 0644, | |
6d9f239a | 563 | .proc_handler = proc_allowed_congestion_control, |
ce7bc3bf | 564 | }, |
886236c1 | 565 | { |
886236c1 JH |
566 | .procname = "tcp_max_ssthresh", |
567 | .data = &sysctl_tcp_max_ssthresh, | |
568 | .maxlen = sizeof(int), | |
569 | .mode = 0644, | |
6d9f239a | 570 | .proc_handler = proc_dointvec, |
886236c1 | 571 | }, |
519855c5 | 572 | { |
519855c5 WAS |
573 | .procname = "tcp_cookie_size", |
574 | .data = &sysctl_tcp_cookie_size, | |
575 | .maxlen = sizeof(int), | |
576 | .mode = 0644, | |
577 | .proc_handler = proc_dointvec | |
578 | }, | |
36e31b0a AP |
579 | { |
580 | .procname = "tcp_thin_linear_timeouts", | |
581 | .data = &sysctl_tcp_thin_linear_timeouts, | |
582 | .maxlen = sizeof(int), | |
583 | .mode = 0644, | |
584 | .proc_handler = proc_dointvec | |
585 | }, | |
7e380175 AP |
586 | { |
587 | .procname = "tcp_thin_dupack", | |
588 | .data = &sysctl_tcp_thin_dupack, | |
589 | .maxlen = sizeof(int), | |
590 | .mode = 0644, | |
591 | .proc_handler = proc_dointvec | |
592 | }, | |
95766fff | 593 | { |
95766fff HA |
594 | .procname = "udp_mem", |
595 | .data = &sysctl_udp_mem, | |
596 | .maxlen = sizeof(sysctl_udp_mem), | |
597 | .mode = 0644, | |
6d9f239a | 598 | .proc_handler = proc_dointvec_minmax, |
95766fff HA |
599 | .extra1 = &zero |
600 | }, | |
601 | { | |
95766fff HA |
602 | .procname = "udp_rmem_min", |
603 | .data = &sysctl_udp_rmem_min, | |
604 | .maxlen = sizeof(sysctl_udp_rmem_min), | |
605 | .mode = 0644, | |
6d9f239a | 606 | .proc_handler = proc_dointvec_minmax, |
95766fff HA |
607 | .extra1 = &zero |
608 | }, | |
609 | { | |
95766fff HA |
610 | .procname = "udp_wmem_min", |
611 | .data = &sysctl_udp_wmem_min, | |
612 | .maxlen = sizeof(sysctl_udp_wmem_min), | |
613 | .mode = 0644, | |
6d9f239a | 614 | .proc_handler = proc_dointvec_minmax, |
95766fff HA |
615 | .extra1 = &zero |
616 | }, | |
f8572d8f | 617 | { } |
1da177e4 | 618 | }; |
3e37c3f9 | 619 | |
68528f09 PE |
620 | static struct ctl_table ipv4_net_table[] = { |
621 | { | |
68528f09 PE |
622 | .procname = "icmp_echo_ignore_all", |
623 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_all, | |
624 | .maxlen = sizeof(int), | |
625 | .mode = 0644, | |
6d9f239a | 626 | .proc_handler = proc_dointvec |
68528f09 PE |
627 | }, |
628 | { | |
68528f09 PE |
629 | .procname = "icmp_echo_ignore_broadcasts", |
630 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts, | |
631 | .maxlen = sizeof(int), | |
632 | .mode = 0644, | |
6d9f239a | 633 | .proc_handler = proc_dointvec |
68528f09 PE |
634 | }, |
635 | { | |
68528f09 PE |
636 | .procname = "icmp_ignore_bogus_error_responses", |
637 | .data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses, | |
638 | .maxlen = sizeof(int), | |
639 | .mode = 0644, | |
6d9f239a | 640 | .proc_handler = proc_dointvec |
68528f09 PE |
641 | }, |
642 | { | |
68528f09 PE |
643 | .procname = "icmp_errors_use_inbound_ifaddr", |
644 | .data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr, | |
645 | .maxlen = sizeof(int), | |
646 | .mode = 0644, | |
6d9f239a | 647 | .proc_handler = proc_dointvec |
68528f09 PE |
648 | }, |
649 | { | |
68528f09 PE |
650 | .procname = "icmp_ratelimit", |
651 | .data = &init_net.ipv4.sysctl_icmp_ratelimit, | |
652 | .maxlen = sizeof(int), | |
653 | .mode = 0644, | |
6d9f239a | 654 | .proc_handler = proc_dointvec_ms_jiffies, |
68528f09 PE |
655 | }, |
656 | { | |
68528f09 PE |
657 | .procname = "icmp_ratemask", |
658 | .data = &init_net.ipv4.sysctl_icmp_ratemask, | |
659 | .maxlen = sizeof(int), | |
660 | .mode = 0644, | |
6d9f239a | 661 | .proc_handler = proc_dointvec |
68528f09 | 662 | }, |
1080d709 | 663 | { |
1080d709 NH |
664 | .procname = "rt_cache_rebuild_count", |
665 | .data = &init_net.ipv4.sysctl_rt_cache_rebuild_count, | |
666 | .maxlen = sizeof(int), | |
667 | .mode = 0644, | |
6d9f239a | 668 | .proc_handler = proc_dointvec |
1080d709 | 669 | }, |
68528f09 PE |
670 | { } |
671 | }; | |
672 | ||
3d7cc2ba | 673 | struct ctl_path net_ipv4_ctl_path[] = { |
f8572d8f EB |
674 | { .procname = "net", }, |
675 | { .procname = "ipv4", }, | |
3e37c3f9 PE |
676 | { }, |
677 | }; | |
3d7cc2ba | 678 | EXPORT_SYMBOL_GPL(net_ipv4_ctl_path); |
3e37c3f9 | 679 | |
1577519d PE |
680 | static __net_init int ipv4_sysctl_init_net(struct net *net) |
681 | { | |
68528f09 PE |
682 | struct ctl_table *table; |
683 | ||
684 | table = ipv4_net_table; | |
09ad9bc7 | 685 | if (!net_eq(net, &init_net)) { |
68528f09 PE |
686 | table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL); |
687 | if (table == NULL) | |
688 | goto err_alloc; | |
689 | ||
690 | table[0].data = | |
691 | &net->ipv4.sysctl_icmp_echo_ignore_all; | |
692 | table[1].data = | |
693 | &net->ipv4.sysctl_icmp_echo_ignore_broadcasts; | |
694 | table[2].data = | |
695 | &net->ipv4.sysctl_icmp_ignore_bogus_error_responses; | |
696 | table[3].data = | |
697 | &net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr; | |
698 | table[4].data = | |
699 | &net->ipv4.sysctl_icmp_ratelimit; | |
700 | table[5].data = | |
701 | &net->ipv4.sysctl_icmp_ratemask; | |
1080d709 NH |
702 | table[6].data = |
703 | &net->ipv4.sysctl_rt_cache_rebuild_count; | |
68528f09 PE |
704 | } |
705 | ||
1080d709 NH |
706 | net->ipv4.sysctl_rt_cache_rebuild_count = 4; |
707 | ||
68528f09 PE |
708 | net->ipv4.ipv4_hdr = register_net_sysctl_table(net, |
709 | net_ipv4_ctl_path, table); | |
710 | if (net->ipv4.ipv4_hdr == NULL) | |
711 | goto err_reg; | |
712 | ||
1577519d | 713 | return 0; |
68528f09 PE |
714 | |
715 | err_reg: | |
09ad9bc7 | 716 | if (!net_eq(net, &init_net)) |
68528f09 PE |
717 | kfree(table); |
718 | err_alloc: | |
719 | return -ENOMEM; | |
1577519d PE |
720 | } |
721 | ||
722 | static __net_exit void ipv4_sysctl_exit_net(struct net *net) | |
723 | { | |
68528f09 PE |
724 | struct ctl_table *table; |
725 | ||
726 | table = net->ipv4.ipv4_hdr->ctl_table_arg; | |
727 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
728 | kfree(table); | |
1577519d PE |
729 | } |
730 | ||
731 | static __net_initdata struct pernet_operations ipv4_sysctl_ops = { | |
732 | .init = ipv4_sysctl_init_net, | |
733 | .exit = ipv4_sysctl_exit_net, | |
734 | }; | |
735 | ||
3e37c3f9 PE |
736 | static __init int sysctl_ipv4_init(void) |
737 | { | |
738 | struct ctl_table_header *hdr; | |
739 | ||
3d7cc2ba | 740 | hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table); |
1577519d PE |
741 | if (hdr == NULL) |
742 | return -ENOMEM; | |
743 | ||
744 | if (register_pernet_subsys(&ipv4_sysctl_ops)) { | |
745 | unregister_sysctl_table(hdr); | |
746 | return -ENOMEM; | |
747 | } | |
748 | ||
749 | return 0; | |
3e37c3f9 PE |
750 | } |
751 | ||
752 | __initcall(sysctl_ipv4_init); |