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 }; | |
0147fc05 AD |
29 | static int tcp_adv_win_scale_min = -31; |
30 | static int tcp_adv_win_scale_max = 31; | |
249fab77 ED |
31 | static int ip_ttl_min = 1; |
32 | static int ip_ttl_max = 255; | |
1da177e4 | 33 | |
227b60f5 SH |
34 | /* Update system visible IP port range */ |
35 | static void set_local_port_range(int range[2]) | |
36 | { | |
3c689b73 ED |
37 | write_seqlock(&sysctl_local_ports.lock); |
38 | sysctl_local_ports.range[0] = range[0]; | |
39 | sysctl_local_ports.range[1] = range[1]; | |
40 | write_sequnlock(&sysctl_local_ports.lock); | |
227b60f5 SH |
41 | } |
42 | ||
43 | /* Validate changes from /proc interface. */ | |
8d65af78 | 44 | static int ipv4_local_port_range(ctl_table *table, int write, |
227b60f5 SH |
45 | void __user *buffer, |
46 | size_t *lenp, loff_t *ppos) | |
47 | { | |
48 | int ret; | |
3c689b73 | 49 | int range[2]; |
227b60f5 SH |
50 | ctl_table tmp = { |
51 | .data = &range, | |
52 | .maxlen = sizeof(range), | |
53 | .mode = table->mode, | |
54 | .extra1 = &ip_local_port_range_min, | |
55 | .extra2 = &ip_local_port_range_max, | |
56 | }; | |
57 | ||
3c689b73 | 58 | inet_get_local_port_range(range, range + 1); |
8d65af78 | 59 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
227b60f5 SH |
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 | ||
8d65af78 | 71 | static int proc_tcp_congestion_control(ctl_table *ctl, int write, |
317a76f9 SH |
72 | void __user *buffer, size_t *lenp, loff_t *ppos) |
73 | { | |
74 | char val[TCP_CA_NAME_MAX]; | |
75 | ctl_table tbl = { | |
76 | .data = val, | |
77 | .maxlen = TCP_CA_NAME_MAX, | |
78 | }; | |
79 | int ret; | |
80 | ||
81 | tcp_get_default_congestion_control(val); | |
82 | ||
8d65af78 | 83 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
317a76f9 SH |
84 | if (write && ret == 0) |
85 | ret = tcp_set_default_congestion_control(val); | |
86 | return ret; | |
87 | } | |
88 | ||
3ff825b2 | 89 | static int proc_tcp_available_congestion_control(ctl_table *ctl, |
8d65af78 | 90 | int write, |
3ff825b2 SH |
91 | void __user *buffer, size_t *lenp, |
92 | loff_t *ppos) | |
93 | { | |
94 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; | |
95 | int ret; | |
96 | ||
97 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
98 | if (!tbl.data) | |
99 | return -ENOMEM; | |
100 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); | |
8d65af78 | 101 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
3ff825b2 SH |
102 | kfree(tbl.data); |
103 | return ret; | |
104 | } | |
105 | ||
ce7bc3bf | 106 | static int proc_allowed_congestion_control(ctl_table *ctl, |
8d65af78 | 107 | int write, |
ce7bc3bf SH |
108 | void __user *buffer, size_t *lenp, |
109 | loff_t *ppos) | |
110 | { | |
111 | ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; | |
112 | int ret; | |
113 | ||
114 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
115 | if (!tbl.data) | |
116 | return -ENOMEM; | |
117 | ||
118 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); | |
8d65af78 | 119 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
ce7bc3bf SH |
120 | if (write && ret == 0) |
121 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
122 | kfree(tbl.data); | |
123 | return ret; | |
124 | } | |
125 | ||
3e37c3f9 | 126 | static struct ctl_table ipv4_table[] = { |
e905a9ed | 127 | { |
1da177e4 LT |
128 | .procname = "tcp_timestamps", |
129 | .data = &sysctl_tcp_timestamps, | |
130 | .maxlen = sizeof(int), | |
131 | .mode = 0644, | |
6d9f239a | 132 | .proc_handler = proc_dointvec |
1da177e4 | 133 | }, |
e905a9ed | 134 | { |
1da177e4 LT |
135 | .procname = "tcp_window_scaling", |
136 | .data = &sysctl_tcp_window_scaling, | |
137 | .maxlen = sizeof(int), | |
138 | .mode = 0644, | |
6d9f239a | 139 | .proc_handler = proc_dointvec |
1da177e4 | 140 | }, |
e905a9ed | 141 | { |
1da177e4 LT |
142 | .procname = "tcp_sack", |
143 | .data = &sysctl_tcp_sack, | |
144 | .maxlen = sizeof(int), | |
145 | .mode = 0644, | |
6d9f239a | 146 | .proc_handler = proc_dointvec |
1da177e4 | 147 | }, |
e905a9ed | 148 | { |
1da177e4 LT |
149 | .procname = "tcp_retrans_collapse", |
150 | .data = &sysctl_tcp_retrans_collapse, | |
151 | .maxlen = sizeof(int), | |
152 | .mode = 0644, | |
6d9f239a | 153 | .proc_handler = proc_dointvec |
1da177e4 | 154 | }, |
e905a9ed | 155 | { |
1da177e4 | 156 | .procname = "ip_default_ttl", |
e905a9ed | 157 | .data = &sysctl_ip_default_ttl, |
1da177e4 LT |
158 | .maxlen = sizeof(int), |
159 | .mode = 0644, | |
249fab77 ED |
160 | .proc_handler = proc_dointvec_minmax, |
161 | .extra1 = &ip_ttl_min, | |
162 | .extra2 = &ip_ttl_max, | |
1da177e4 | 163 | }, |
e905a9ed | 164 | { |
1da177e4 LT |
165 | .procname = "ip_no_pmtu_disc", |
166 | .data = &ipv4_config.no_pmtu_disc, | |
167 | .maxlen = sizeof(int), | |
168 | .mode = 0644, | |
6d9f239a | 169 | .proc_handler = proc_dointvec |
1da177e4 LT |
170 | }, |
171 | { | |
1da177e4 LT |
172 | .procname = "ip_nonlocal_bind", |
173 | .data = &sysctl_ip_nonlocal_bind, | |
174 | .maxlen = sizeof(int), | |
175 | .mode = 0644, | |
6d9f239a | 176 | .proc_handler = proc_dointvec |
1da177e4 LT |
177 | }, |
178 | { | |
1da177e4 LT |
179 | .procname = "tcp_syn_retries", |
180 | .data = &sysctl_tcp_syn_retries, | |
181 | .maxlen = sizeof(int), | |
182 | .mode = 0644, | |
6d9f239a | 183 | .proc_handler = proc_dointvec |
1da177e4 LT |
184 | }, |
185 | { | |
1da177e4 LT |
186 | .procname = "tcp_synack_retries", |
187 | .data = &sysctl_tcp_synack_retries, | |
188 | .maxlen = sizeof(int), | |
189 | .mode = 0644, | |
6d9f239a | 190 | .proc_handler = proc_dointvec |
1da177e4 LT |
191 | }, |
192 | { | |
1da177e4 LT |
193 | .procname = "tcp_max_orphans", |
194 | .data = &sysctl_tcp_max_orphans, | |
195 | .maxlen = sizeof(int), | |
196 | .mode = 0644, | |
6d9f239a | 197 | .proc_handler = proc_dointvec |
1da177e4 LT |
198 | }, |
199 | { | |
1da177e4 | 200 | .procname = "tcp_max_tw_buckets", |
295ff7ed | 201 | .data = &tcp_death_row.sysctl_max_tw_buckets, |
1da177e4 LT |
202 | .maxlen = sizeof(int), |
203 | .mode = 0644, | |
6d9f239a | 204 | .proc_handler = proc_dointvec |
1da177e4 | 205 | }, |
1da177e4 | 206 | { |
1da177e4 LT |
207 | .procname = "ip_dynaddr", |
208 | .data = &sysctl_ip_dynaddr, | |
209 | .maxlen = sizeof(int), | |
210 | .mode = 0644, | |
6d9f239a | 211 | .proc_handler = proc_dointvec |
1da177e4 | 212 | }, |
1da177e4 | 213 | { |
1da177e4 LT |
214 | .procname = "tcp_keepalive_time", |
215 | .data = &sysctl_tcp_keepalive_time, | |
216 | .maxlen = sizeof(int), | |
217 | .mode = 0644, | |
6d9f239a | 218 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
219 | }, |
220 | { | |
1da177e4 LT |
221 | .procname = "tcp_keepalive_probes", |
222 | .data = &sysctl_tcp_keepalive_probes, | |
223 | .maxlen = sizeof(int), | |
224 | .mode = 0644, | |
6d9f239a | 225 | .proc_handler = proc_dointvec |
1da177e4 LT |
226 | }, |
227 | { | |
1da177e4 LT |
228 | .procname = "tcp_keepalive_intvl", |
229 | .data = &sysctl_tcp_keepalive_intvl, | |
230 | .maxlen = sizeof(int), | |
231 | .mode = 0644, | |
6d9f239a | 232 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
233 | }, |
234 | { | |
1da177e4 LT |
235 | .procname = "tcp_retries1", |
236 | .data = &sysctl_tcp_retries1, | |
237 | .maxlen = sizeof(int), | |
238 | .mode = 0644, | |
6d9f239a | 239 | .proc_handler = proc_dointvec_minmax, |
1da177e4 LT |
240 | .extra2 = &tcp_retr1_max |
241 | }, | |
242 | { | |
1da177e4 LT |
243 | .procname = "tcp_retries2", |
244 | .data = &sysctl_tcp_retries2, | |
245 | .maxlen = sizeof(int), | |
246 | .mode = 0644, | |
6d9f239a | 247 | .proc_handler = proc_dointvec |
1da177e4 LT |
248 | }, |
249 | { | |
1da177e4 LT |
250 | .procname = "tcp_fin_timeout", |
251 | .data = &sysctl_tcp_fin_timeout, | |
252 | .maxlen = sizeof(int), | |
253 | .mode = 0644, | |
6d9f239a | 254 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
255 | }, |
256 | #ifdef CONFIG_SYN_COOKIES | |
257 | { | |
1da177e4 LT |
258 | .procname = "tcp_syncookies", |
259 | .data = &sysctl_tcp_syncookies, | |
260 | .maxlen = sizeof(int), | |
261 | .mode = 0644, | |
6d9f239a | 262 | .proc_handler = proc_dointvec |
1da177e4 LT |
263 | }, |
264 | #endif | |
265 | { | |
1da177e4 | 266 | .procname = "tcp_tw_recycle", |
295ff7ed | 267 | .data = &tcp_death_row.sysctl_tw_recycle, |
1da177e4 LT |
268 | .maxlen = sizeof(int), |
269 | .mode = 0644, | |
6d9f239a | 270 | .proc_handler = proc_dointvec |
1da177e4 LT |
271 | }, |
272 | { | |
1da177e4 LT |
273 | .procname = "tcp_abort_on_overflow", |
274 | .data = &sysctl_tcp_abort_on_overflow, | |
275 | .maxlen = sizeof(int), | |
276 | .mode = 0644, | |
6d9f239a | 277 | .proc_handler = proc_dointvec |
1da177e4 LT |
278 | }, |
279 | { | |
1da177e4 LT |
280 | .procname = "tcp_stdurg", |
281 | .data = &sysctl_tcp_stdurg, | |
282 | .maxlen = sizeof(int), | |
283 | .mode = 0644, | |
6d9f239a | 284 | .proc_handler = proc_dointvec |
1da177e4 LT |
285 | }, |
286 | { | |
1da177e4 LT |
287 | .procname = "tcp_rfc1337", |
288 | .data = &sysctl_tcp_rfc1337, | |
289 | .maxlen = sizeof(int), | |
290 | .mode = 0644, | |
6d9f239a | 291 | .proc_handler = proc_dointvec |
1da177e4 LT |
292 | }, |
293 | { | |
1da177e4 LT |
294 | .procname = "tcp_max_syn_backlog", |
295 | .data = &sysctl_max_syn_backlog, | |
296 | .maxlen = sizeof(int), | |
297 | .mode = 0644, | |
6d9f239a | 298 | .proc_handler = proc_dointvec |
1da177e4 LT |
299 | }, |
300 | { | |
1da177e4 | 301 | .procname = "ip_local_port_range", |
3c689b73 ED |
302 | .data = &sysctl_local_ports.range, |
303 | .maxlen = sizeof(sysctl_local_ports.range), | |
1da177e4 | 304 | .mode = 0644, |
6d9f239a | 305 | .proc_handler = ipv4_local_port_range, |
1da177e4 | 306 | }, |
e3826f1e AW |
307 | { |
308 | .procname = "ip_local_reserved_ports", | |
309 | .data = NULL, /* initialized in sysctl_ipv4_init */ | |
310 | .maxlen = 65536, | |
311 | .mode = 0644, | |
312 | .proc_handler = proc_do_large_bitmap, | |
313 | }, | |
1da177e4 LT |
314 | #ifdef CONFIG_IP_MULTICAST |
315 | { | |
1da177e4 LT |
316 | .procname = "igmp_max_memberships", |
317 | .data = &sysctl_igmp_max_memberships, | |
318 | .maxlen = sizeof(int), | |
319 | .mode = 0644, | |
6d9f239a | 320 | .proc_handler = proc_dointvec |
1da177e4 LT |
321 | }, |
322 | ||
323 | #endif | |
324 | { | |
1da177e4 LT |
325 | .procname = "igmp_max_msf", |
326 | .data = &sysctl_igmp_max_msf, | |
327 | .maxlen = sizeof(int), | |
328 | .mode = 0644, | |
6d9f239a | 329 | .proc_handler = proc_dointvec |
1da177e4 LT |
330 | }, |
331 | { | |
1da177e4 LT |
332 | .procname = "inet_peer_threshold", |
333 | .data = &inet_peer_threshold, | |
334 | .maxlen = sizeof(int), | |
335 | .mode = 0644, | |
6d9f239a | 336 | .proc_handler = proc_dointvec |
1da177e4 LT |
337 | }, |
338 | { | |
1da177e4 LT |
339 | .procname = "inet_peer_minttl", |
340 | .data = &inet_peer_minttl, | |
341 | .maxlen = sizeof(int), | |
342 | .mode = 0644, | |
6d9f239a | 343 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
344 | }, |
345 | { | |
1da177e4 LT |
346 | .procname = "inet_peer_maxttl", |
347 | .data = &inet_peer_maxttl, | |
348 | .maxlen = sizeof(int), | |
349 | .mode = 0644, | |
6d9f239a | 350 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
351 | }, |
352 | { | |
1da177e4 LT |
353 | .procname = "inet_peer_gc_mintime", |
354 | .data = &inet_peer_gc_mintime, | |
355 | .maxlen = sizeof(int), | |
356 | .mode = 0644, | |
6d9f239a | 357 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
358 | }, |
359 | { | |
1da177e4 LT |
360 | .procname = "inet_peer_gc_maxtime", |
361 | .data = &inet_peer_gc_maxtime, | |
362 | .maxlen = sizeof(int), | |
363 | .mode = 0644, | |
6d9f239a | 364 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
365 | }, |
366 | { | |
1da177e4 LT |
367 | .procname = "tcp_orphan_retries", |
368 | .data = &sysctl_tcp_orphan_retries, | |
369 | .maxlen = sizeof(int), | |
370 | .mode = 0644, | |
6d9f239a | 371 | .proc_handler = proc_dointvec |
1da177e4 LT |
372 | }, |
373 | { | |
1da177e4 LT |
374 | .procname = "tcp_fack", |
375 | .data = &sysctl_tcp_fack, | |
376 | .maxlen = sizeof(int), | |
377 | .mode = 0644, | |
6d9f239a | 378 | .proc_handler = proc_dointvec |
1da177e4 LT |
379 | }, |
380 | { | |
1da177e4 LT |
381 | .procname = "tcp_reordering", |
382 | .data = &sysctl_tcp_reordering, | |
383 | .maxlen = sizeof(int), | |
384 | .mode = 0644, | |
6d9f239a | 385 | .proc_handler = proc_dointvec |
1da177e4 LT |
386 | }, |
387 | { | |
1da177e4 LT |
388 | .procname = "tcp_ecn", |
389 | .data = &sysctl_tcp_ecn, | |
390 | .maxlen = sizeof(int), | |
391 | .mode = 0644, | |
6d9f239a | 392 | .proc_handler = proc_dointvec |
1da177e4 LT |
393 | }, |
394 | { | |
1da177e4 LT |
395 | .procname = "tcp_dsack", |
396 | .data = &sysctl_tcp_dsack, | |
397 | .maxlen = sizeof(int), | |
398 | .mode = 0644, | |
6d9f239a | 399 | .proc_handler = proc_dointvec |
1da177e4 LT |
400 | }, |
401 | { | |
1da177e4 LT |
402 | .procname = "tcp_mem", |
403 | .data = &sysctl_tcp_mem, | |
404 | .maxlen = sizeof(sysctl_tcp_mem), | |
405 | .mode = 0644, | |
8d987e5c | 406 | .proc_handler = proc_doulongvec_minmax |
1da177e4 LT |
407 | }, |
408 | { | |
1da177e4 LT |
409 | .procname = "tcp_wmem", |
410 | .data = &sysctl_tcp_wmem, | |
411 | .maxlen = sizeof(sysctl_tcp_wmem), | |
412 | .mode = 0644, | |
6d9f239a | 413 | .proc_handler = proc_dointvec |
1da177e4 LT |
414 | }, |
415 | { | |
1da177e4 LT |
416 | .procname = "tcp_rmem", |
417 | .data = &sysctl_tcp_rmem, | |
418 | .maxlen = sizeof(sysctl_tcp_rmem), | |
419 | .mode = 0644, | |
6d9f239a | 420 | .proc_handler = proc_dointvec |
1da177e4 LT |
421 | }, |
422 | { | |
1da177e4 LT |
423 | .procname = "tcp_app_win", |
424 | .data = &sysctl_tcp_app_win, | |
425 | .maxlen = sizeof(int), | |
426 | .mode = 0644, | |
6d9f239a | 427 | .proc_handler = proc_dointvec |
1da177e4 LT |
428 | }, |
429 | { | |
1da177e4 LT |
430 | .procname = "tcp_adv_win_scale", |
431 | .data = &sysctl_tcp_adv_win_scale, | |
432 | .maxlen = sizeof(int), | |
433 | .mode = 0644, | |
0147fc05 AD |
434 | .proc_handler = proc_dointvec_minmax, |
435 | .extra1 = &tcp_adv_win_scale_min, | |
436 | .extra2 = &tcp_adv_win_scale_max, | |
1da177e4 | 437 | }, |
1da177e4 | 438 | { |
1da177e4 LT |
439 | .procname = "tcp_tw_reuse", |
440 | .data = &sysctl_tcp_tw_reuse, | |
441 | .maxlen = sizeof(int), | |
442 | .mode = 0644, | |
6d9f239a | 443 | .proc_handler = proc_dointvec |
1da177e4 LT |
444 | }, |
445 | { | |
1da177e4 LT |
446 | .procname = "tcp_frto", |
447 | .data = &sysctl_tcp_frto, | |
448 | .maxlen = sizeof(int), | |
449 | .mode = 0644, | |
6d9f239a | 450 | .proc_handler = proc_dointvec |
1da177e4 | 451 | }, |
3cfe3baa | 452 | { |
3cfe3baa IJ |
453 | .procname = "tcp_frto_response", |
454 | .data = &sysctl_tcp_frto_response, | |
455 | .maxlen = sizeof(int), | |
456 | .mode = 0644, | |
6d9f239a | 457 | .proc_handler = proc_dointvec |
3cfe3baa | 458 | }, |
1da177e4 | 459 | { |
1da177e4 LT |
460 | .procname = "tcp_low_latency", |
461 | .data = &sysctl_tcp_low_latency, | |
462 | .maxlen = sizeof(int), | |
463 | .mode = 0644, | |
6d9f239a | 464 | .proc_handler = proc_dointvec |
1da177e4 | 465 | }, |
1da177e4 | 466 | { |
1da177e4 LT |
467 | .procname = "tcp_no_metrics_save", |
468 | .data = &sysctl_tcp_nometrics_save, | |
469 | .maxlen = sizeof(int), | |
470 | .mode = 0644, | |
6d9f239a | 471 | .proc_handler = proc_dointvec, |
1da177e4 | 472 | }, |
1da177e4 | 473 | { |
1da177e4 LT |
474 | .procname = "tcp_moderate_rcvbuf", |
475 | .data = &sysctl_tcp_moderate_rcvbuf, | |
476 | .maxlen = sizeof(int), | |
477 | .mode = 0644, | |
6d9f239a | 478 | .proc_handler = proc_dointvec, |
1da177e4 LT |
479 | }, |
480 | { | |
1da177e4 LT |
481 | .procname = "tcp_tso_win_divisor", |
482 | .data = &sysctl_tcp_tso_win_divisor, | |
483 | .maxlen = sizeof(int), | |
484 | .mode = 0644, | |
6d9f239a | 485 | .proc_handler = proc_dointvec, |
1da177e4 LT |
486 | }, |
487 | { | |
317a76f9 | 488 | .procname = "tcp_congestion_control", |
1da177e4 | 489 | .mode = 0644, |
317a76f9 | 490 | .maxlen = TCP_CA_NAME_MAX, |
6d9f239a | 491 | .proc_handler = proc_tcp_congestion_control, |
1da177e4 | 492 | }, |
9772efb9 | 493 | { |
9772efb9 SH |
494 | .procname = "tcp_abc", |
495 | .data = &sysctl_tcp_abc, | |
496 | .maxlen = sizeof(int), | |
497 | .mode = 0644, | |
6d9f239a | 498 | .proc_handler = proc_dointvec, |
9772efb9 | 499 | }, |
5d424d5a | 500 | { |
5d424d5a JH |
501 | .procname = "tcp_mtu_probing", |
502 | .data = &sysctl_tcp_mtu_probing, | |
503 | .maxlen = sizeof(int), | |
504 | .mode = 0644, | |
6d9f239a | 505 | .proc_handler = proc_dointvec, |
5d424d5a JH |
506 | }, |
507 | { | |
5d424d5a JH |
508 | .procname = "tcp_base_mss", |
509 | .data = &sysctl_tcp_base_mss, | |
510 | .maxlen = sizeof(int), | |
511 | .mode = 0644, | |
6d9f239a | 512 | .proc_handler = proc_dointvec, |
5d424d5a | 513 | }, |
e905a9ed | 514 | { |
15d99e02 RJ |
515 | .procname = "tcp_workaround_signed_windows", |
516 | .data = &sysctl_tcp_workaround_signed_windows, | |
517 | .maxlen = sizeof(int), | |
518 | .mode = 0644, | |
6d9f239a | 519 | .proc_handler = proc_dointvec |
15d99e02 | 520 | }, |
95937825 CL |
521 | #ifdef CONFIG_NET_DMA |
522 | { | |
95937825 CL |
523 | .procname = "tcp_dma_copybreak", |
524 | .data = &sysctl_tcp_dma_copybreak, | |
525 | .maxlen = sizeof(int), | |
526 | .mode = 0644, | |
6d9f239a | 527 | .proc_handler = proc_dointvec |
95937825 CL |
528 | }, |
529 | #endif | |
35089bb2 | 530 | { |
35089bb2 DM |
531 | .procname = "tcp_slow_start_after_idle", |
532 | .data = &sysctl_tcp_slow_start_after_idle, | |
533 | .maxlen = sizeof(int), | |
534 | .mode = 0644, | |
6d9f239a | 535 | .proc_handler = proc_dointvec |
35089bb2 | 536 | }, |
446fda4f PM |
537 | #ifdef CONFIG_NETLABEL |
538 | { | |
446fda4f PM |
539 | .procname = "cipso_cache_enable", |
540 | .data = &cipso_v4_cache_enabled, | |
541 | .maxlen = sizeof(int), | |
542 | .mode = 0644, | |
6d9f239a | 543 | .proc_handler = proc_dointvec, |
446fda4f PM |
544 | }, |
545 | { | |
446fda4f PM |
546 | .procname = "cipso_cache_bucket_size", |
547 | .data = &cipso_v4_cache_bucketsize, | |
548 | .maxlen = sizeof(int), | |
549 | .mode = 0644, | |
6d9f239a | 550 | .proc_handler = proc_dointvec, |
446fda4f PM |
551 | }, |
552 | { | |
446fda4f PM |
553 | .procname = "cipso_rbm_optfmt", |
554 | .data = &cipso_v4_rbm_optfmt, | |
555 | .maxlen = sizeof(int), | |
556 | .mode = 0644, | |
6d9f239a | 557 | .proc_handler = proc_dointvec, |
446fda4f PM |
558 | }, |
559 | { | |
446fda4f PM |
560 | .procname = "cipso_rbm_strictvalid", |
561 | .data = &cipso_v4_rbm_strictvalid, | |
562 | .maxlen = sizeof(int), | |
563 | .mode = 0644, | |
6d9f239a | 564 | .proc_handler = proc_dointvec, |
446fda4f PM |
565 | }, |
566 | #endif /* CONFIG_NETLABEL */ | |
3ff825b2 | 567 | { |
3ff825b2 SH |
568 | .procname = "tcp_available_congestion_control", |
569 | .maxlen = TCP_CA_BUF_MAX, | |
570 | .mode = 0444, | |
6d9f239a | 571 | .proc_handler = proc_tcp_available_congestion_control, |
3ff825b2 | 572 | }, |
ce7bc3bf | 573 | { |
ce7bc3bf SH |
574 | .procname = "tcp_allowed_congestion_control", |
575 | .maxlen = TCP_CA_BUF_MAX, | |
576 | .mode = 0644, | |
6d9f239a | 577 | .proc_handler = proc_allowed_congestion_control, |
ce7bc3bf | 578 | }, |
886236c1 | 579 | { |
886236c1 JH |
580 | .procname = "tcp_max_ssthresh", |
581 | .data = &sysctl_tcp_max_ssthresh, | |
582 | .maxlen = sizeof(int), | |
583 | .mode = 0644, | |
6d9f239a | 584 | .proc_handler = proc_dointvec, |
886236c1 | 585 | }, |
519855c5 | 586 | { |
519855c5 WAS |
587 | .procname = "tcp_cookie_size", |
588 | .data = &sysctl_tcp_cookie_size, | |
589 | .maxlen = sizeof(int), | |
590 | .mode = 0644, | |
591 | .proc_handler = proc_dointvec | |
592 | }, | |
36e31b0a AP |
593 | { |
594 | .procname = "tcp_thin_linear_timeouts", | |
595 | .data = &sysctl_tcp_thin_linear_timeouts, | |
596 | .maxlen = sizeof(int), | |
597 | .mode = 0644, | |
598 | .proc_handler = proc_dointvec | |
599 | }, | |
7e380175 AP |
600 | { |
601 | .procname = "tcp_thin_dupack", | |
602 | .data = &sysctl_tcp_thin_dupack, | |
603 | .maxlen = sizeof(int), | |
604 | .mode = 0644, | |
605 | .proc_handler = proc_dointvec | |
606 | }, | |
95766fff | 607 | { |
95766fff HA |
608 | .procname = "udp_mem", |
609 | .data = &sysctl_udp_mem, | |
610 | .maxlen = sizeof(sysctl_udp_mem), | |
611 | .mode = 0644, | |
8d987e5c | 612 | .proc_handler = proc_doulongvec_minmax, |
95766fff HA |
613 | }, |
614 | { | |
95766fff HA |
615 | .procname = "udp_rmem_min", |
616 | .data = &sysctl_udp_rmem_min, | |
617 | .maxlen = sizeof(sysctl_udp_rmem_min), | |
618 | .mode = 0644, | |
6d9f239a | 619 | .proc_handler = proc_dointvec_minmax, |
95766fff HA |
620 | .extra1 = &zero |
621 | }, | |
622 | { | |
95766fff HA |
623 | .procname = "udp_wmem_min", |
624 | .data = &sysctl_udp_wmem_min, | |
625 | .maxlen = sizeof(sysctl_udp_wmem_min), | |
626 | .mode = 0644, | |
6d9f239a | 627 | .proc_handler = proc_dointvec_minmax, |
95766fff HA |
628 | .extra1 = &zero |
629 | }, | |
f8572d8f | 630 | { } |
1da177e4 | 631 | }; |
3e37c3f9 | 632 | |
68528f09 PE |
633 | static struct ctl_table ipv4_net_table[] = { |
634 | { | |
68528f09 PE |
635 | .procname = "icmp_echo_ignore_all", |
636 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_all, | |
637 | .maxlen = sizeof(int), | |
638 | .mode = 0644, | |
6d9f239a | 639 | .proc_handler = proc_dointvec |
68528f09 PE |
640 | }, |
641 | { | |
68528f09 PE |
642 | .procname = "icmp_echo_ignore_broadcasts", |
643 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts, | |
644 | .maxlen = sizeof(int), | |
645 | .mode = 0644, | |
6d9f239a | 646 | .proc_handler = proc_dointvec |
68528f09 PE |
647 | }, |
648 | { | |
68528f09 PE |
649 | .procname = "icmp_ignore_bogus_error_responses", |
650 | .data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses, | |
651 | .maxlen = sizeof(int), | |
652 | .mode = 0644, | |
6d9f239a | 653 | .proc_handler = proc_dointvec |
68528f09 PE |
654 | }, |
655 | { | |
68528f09 PE |
656 | .procname = "icmp_errors_use_inbound_ifaddr", |
657 | .data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr, | |
658 | .maxlen = sizeof(int), | |
659 | .mode = 0644, | |
6d9f239a | 660 | .proc_handler = proc_dointvec |
68528f09 PE |
661 | }, |
662 | { | |
68528f09 PE |
663 | .procname = "icmp_ratelimit", |
664 | .data = &init_net.ipv4.sysctl_icmp_ratelimit, | |
665 | .maxlen = sizeof(int), | |
666 | .mode = 0644, | |
6d9f239a | 667 | .proc_handler = proc_dointvec_ms_jiffies, |
68528f09 PE |
668 | }, |
669 | { | |
68528f09 PE |
670 | .procname = "icmp_ratemask", |
671 | .data = &init_net.ipv4.sysctl_icmp_ratemask, | |
672 | .maxlen = sizeof(int), | |
673 | .mode = 0644, | |
6d9f239a | 674 | .proc_handler = proc_dointvec |
68528f09 | 675 | }, |
1080d709 | 676 | { |
1080d709 NH |
677 | .procname = "rt_cache_rebuild_count", |
678 | .data = &init_net.ipv4.sysctl_rt_cache_rebuild_count, | |
679 | .maxlen = sizeof(int), | |
680 | .mode = 0644, | |
6d9f239a | 681 | .proc_handler = proc_dointvec |
1080d709 | 682 | }, |
68528f09 PE |
683 | { } |
684 | }; | |
685 | ||
3d7cc2ba | 686 | struct ctl_path net_ipv4_ctl_path[] = { |
f8572d8f EB |
687 | { .procname = "net", }, |
688 | { .procname = "ipv4", }, | |
3e37c3f9 PE |
689 | { }, |
690 | }; | |
3d7cc2ba | 691 | EXPORT_SYMBOL_GPL(net_ipv4_ctl_path); |
3e37c3f9 | 692 | |
1577519d PE |
693 | static __net_init int ipv4_sysctl_init_net(struct net *net) |
694 | { | |
68528f09 PE |
695 | struct ctl_table *table; |
696 | ||
697 | table = ipv4_net_table; | |
09ad9bc7 | 698 | if (!net_eq(net, &init_net)) { |
68528f09 PE |
699 | table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL); |
700 | if (table == NULL) | |
701 | goto err_alloc; | |
702 | ||
703 | table[0].data = | |
704 | &net->ipv4.sysctl_icmp_echo_ignore_all; | |
705 | table[1].data = | |
706 | &net->ipv4.sysctl_icmp_echo_ignore_broadcasts; | |
707 | table[2].data = | |
708 | &net->ipv4.sysctl_icmp_ignore_bogus_error_responses; | |
709 | table[3].data = | |
710 | &net->ipv4.sysctl_icmp_errors_use_inbound_ifaddr; | |
711 | table[4].data = | |
712 | &net->ipv4.sysctl_icmp_ratelimit; | |
713 | table[5].data = | |
714 | &net->ipv4.sysctl_icmp_ratemask; | |
1080d709 NH |
715 | table[6].data = |
716 | &net->ipv4.sysctl_rt_cache_rebuild_count; | |
68528f09 PE |
717 | } |
718 | ||
1080d709 NH |
719 | net->ipv4.sysctl_rt_cache_rebuild_count = 4; |
720 | ||
68528f09 PE |
721 | net->ipv4.ipv4_hdr = register_net_sysctl_table(net, |
722 | net_ipv4_ctl_path, table); | |
723 | if (net->ipv4.ipv4_hdr == NULL) | |
724 | goto err_reg; | |
725 | ||
1577519d | 726 | return 0; |
68528f09 PE |
727 | |
728 | err_reg: | |
09ad9bc7 | 729 | if (!net_eq(net, &init_net)) |
68528f09 PE |
730 | kfree(table); |
731 | err_alloc: | |
732 | return -ENOMEM; | |
1577519d PE |
733 | } |
734 | ||
735 | static __net_exit void ipv4_sysctl_exit_net(struct net *net) | |
736 | { | |
68528f09 PE |
737 | struct ctl_table *table; |
738 | ||
739 | table = net->ipv4.ipv4_hdr->ctl_table_arg; | |
740 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
741 | kfree(table); | |
1577519d PE |
742 | } |
743 | ||
744 | static __net_initdata struct pernet_operations ipv4_sysctl_ops = { | |
745 | .init = ipv4_sysctl_init_net, | |
746 | .exit = ipv4_sysctl_exit_net, | |
747 | }; | |
748 | ||
3e37c3f9 PE |
749 | static __init int sysctl_ipv4_init(void) |
750 | { | |
751 | struct ctl_table_header *hdr; | |
e3826f1e AW |
752 | struct ctl_table *i; |
753 | ||
754 | for (i = ipv4_table; i->procname; i++) { | |
755 | if (strcmp(i->procname, "ip_local_reserved_ports") == 0) { | |
756 | i->data = sysctl_local_reserved_ports; | |
757 | break; | |
758 | } | |
759 | } | |
760 | if (!i->procname) | |
761 | return -EINVAL; | |
3e37c3f9 | 762 | |
3d7cc2ba | 763 | hdr = register_sysctl_paths(net_ipv4_ctl_path, ipv4_table); |
1577519d PE |
764 | if (hdr == NULL) |
765 | return -ENOMEM; | |
766 | ||
767 | if (register_pernet_subsys(&ipv4_sysctl_ops)) { | |
768 | unregister_sysctl_table(hdr); | |
769 | return -ENOMEM; | |
770 | } | |
771 | ||
772 | return 0; | |
3e37c3f9 PE |
773 | } |
774 | ||
775 | __initcall(sysctl_ipv4_init); |