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Commit | Line | Data |
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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem. | |
4 | * | |
1da177e4 LT |
5 | * Begun April 1, 1996, Mike Shaver. |
6 | * Added /proc/sys/net/ipv4 directory entry (empty =) ). [MS] | |
7 | */ | |
8 | ||
9 | #include <linux/mm.h> | |
10 | #include <linux/module.h> | |
11 | #include <linux/sysctl.h> | |
20380731 | 12 | #include <linux/igmp.h> |
14c85021 | 13 | #include <linux/inetdevice.h> |
227b60f5 | 14 | #include <linux/seqlock.h> |
3e37c3f9 | 15 | #include <linux/init.h> |
5a0e3ad6 | 16 | #include <linux/slab.h> |
c319b4d7 | 17 | #include <linux/nsproxy.h> |
3dc43e3e | 18 | #include <linux/swap.h> |
1da177e4 | 19 | #include <net/snmp.h> |
20380731 | 20 | #include <net/icmp.h> |
1da177e4 LT |
21 | #include <net/ip.h> |
22 | #include <net/route.h> | |
23 | #include <net/tcp.h> | |
95766fff | 24 | #include <net/udp.h> |
446fda4f | 25 | #include <net/cipso_ipv4.h> |
04128f23 | 26 | #include <net/inet_frag.h> |
c319b4d7 | 27 | #include <net/ping.h> |
dddb64bc | 28 | #include <net/protocol.h> |
3ae6ec08 | 29 | #include <net/netevent.h> |
1da177e4 | 30 | |
89cee8b1 | 31 | static int zero; |
cdda8891 | 32 | static int one = 1; |
79e9fed4 | 33 | static int two = 2; |
6ba8a3b1 | 34 | static int four = 4; |
43e122b0 | 35 | static int thousand = 1000; |
95bd09eb | 36 | static int gso_max_segs = GSO_MAX_SEGS; |
e905a9ed | 37 | static int tcp_retr1_max = 255; |
1da177e4 LT |
38 | static int ip_local_port_range_min[] = { 1, 1 }; |
39 | static int ip_local_port_range_max[] = { 65535, 65535 }; | |
0147fc05 AD |
40 | static int tcp_adv_win_scale_min = -31; |
41 | static int tcp_adv_win_scale_max = 31; | |
4548b683 KJ |
42 | static int ip_privileged_port_min; |
43 | static int ip_privileged_port_max = 65535; | |
249fab77 ED |
44 | static int ip_ttl_min = 1; |
45 | static int ip_ttl_max = 255; | |
651e9271 MT |
46 | static int tcp_syn_retries_min = 1; |
47 | static int tcp_syn_retries_max = MAX_TCP_SYNCNT; | |
c319b4d7 VK |
48 | static int ip_ping_group_range_min[] = { 0, 0 }; |
49 | static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX }; | |
9c21d2fc | 50 | static int comp_sack_nr_max = 255; |
1da177e4 | 51 | |
b6690b14 FW |
52 | /* obsolete */ |
53 | static int sysctl_tcp_low_latency __read_mostly; | |
54 | ||
227b60f5 | 55 | /* Update system visible IP port range */ |
0bbf87d8 | 56 | static void set_local_port_range(struct net *net, int range[2]) |
227b60f5 | 57 | { |
ed2dfd90 ED |
58 | bool same_parity = !((range[0] ^ range[1]) & 1); |
59 | ||
4ee3bd4a | 60 | write_seqlock_bh(&net->ipv4.ip_local_ports.lock); |
ed2dfd90 ED |
61 | if (same_parity && !net->ipv4.ip_local_ports.warned) { |
62 | net->ipv4.ip_local_ports.warned = true; | |
63 | pr_err_ratelimited("ip_local_port_range: prefer different parity for start/end values.\n"); | |
64 | } | |
c9d8f1a6 CW |
65 | net->ipv4.ip_local_ports.range[0] = range[0]; |
66 | net->ipv4.ip_local_ports.range[1] = range[1]; | |
4ee3bd4a | 67 | write_sequnlock_bh(&net->ipv4.ip_local_ports.lock); |
227b60f5 SH |
68 | } |
69 | ||
70 | /* Validate changes from /proc interface. */ | |
fe2c6338 | 71 | static int ipv4_local_port_range(struct ctl_table *table, int write, |
227b60f5 SH |
72 | void __user *buffer, |
73 | size_t *lenp, loff_t *ppos) | |
74 | { | |
0bbf87d8 | 75 | struct net *net = |
c9d8f1a6 | 76 | container_of(table->data, struct net, ipv4.ip_local_ports.range); |
227b60f5 | 77 | int ret; |
3c689b73 | 78 | int range[2]; |
fe2c6338 | 79 | struct ctl_table tmp = { |
227b60f5 SH |
80 | .data = &range, |
81 | .maxlen = sizeof(range), | |
82 | .mode = table->mode, | |
83 | .extra1 = &ip_local_port_range_min, | |
84 | .extra2 = &ip_local_port_range_max, | |
85 | }; | |
86 | ||
0bbf87d8 EB |
87 | inet_get_local_port_range(net, &range[0], &range[1]); |
88 | ||
8d65af78 | 89 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
227b60f5 SH |
90 | |
91 | if (write && ret == 0) { | |
4548b683 KJ |
92 | /* Ensure that the upper limit is not smaller than the lower, |
93 | * and that the lower does not encroach upon the privileged | |
94 | * port limit. | |
95 | */ | |
96 | if ((range[1] < range[0]) || | |
97 | (range[0] < net->ipv4.sysctl_ip_prot_sock)) | |
227b60f5 SH |
98 | ret = -EINVAL; |
99 | else | |
0bbf87d8 | 100 | set_local_port_range(net, range); |
227b60f5 SH |
101 | } |
102 | ||
103 | return ret; | |
104 | } | |
105 | ||
4548b683 KJ |
106 | /* Validate changes from /proc interface. */ |
107 | static int ipv4_privileged_ports(struct ctl_table *table, int write, | |
108 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
109 | { | |
110 | struct net *net = container_of(table->data, struct net, | |
111 | ipv4.sysctl_ip_prot_sock); | |
112 | int ret; | |
113 | int pports; | |
114 | int range[2]; | |
115 | struct ctl_table tmp = { | |
116 | .data = &pports, | |
117 | .maxlen = sizeof(pports), | |
118 | .mode = table->mode, | |
119 | .extra1 = &ip_privileged_port_min, | |
120 | .extra2 = &ip_privileged_port_max, | |
121 | }; | |
122 | ||
123 | pports = net->ipv4.sysctl_ip_prot_sock; | |
124 | ||
125 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); | |
126 | ||
127 | if (write && ret == 0) { | |
128 | inet_get_local_port_range(net, &range[0], &range[1]); | |
129 | /* Ensure that the local port range doesn't overlap with the | |
130 | * privileged port range. | |
131 | */ | |
132 | if (range[0] < pports) | |
133 | ret = -EINVAL; | |
134 | else | |
135 | net->ipv4.sysctl_ip_prot_sock = pports; | |
136 | } | |
137 | ||
138 | return ret; | |
139 | } | |
c319b4d7 | 140 | |
7064d16e | 141 | static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high) |
c319b4d7 | 142 | { |
7064d16e | 143 | kgid_t *data = table->data; |
0bbf87d8 | 144 | struct net *net = |
ba6b918a | 145 | container_of(table->data, struct net, ipv4.ping_group_range.range); |
95c96174 | 146 | unsigned int seq; |
c319b4d7 | 147 | do { |
396a30cc | 148 | seq = read_seqbegin(&net->ipv4.ping_group_range.lock); |
c319b4d7 VK |
149 | |
150 | *low = data[0]; | |
151 | *high = data[1]; | |
396a30cc | 152 | } while (read_seqretry(&net->ipv4.ping_group_range.lock, seq)); |
c319b4d7 VK |
153 | } |
154 | ||
155 | /* Update system visible IP port range */ | |
7064d16e | 156 | static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high) |
c319b4d7 | 157 | { |
7064d16e | 158 | kgid_t *data = table->data; |
0bbf87d8 | 159 | struct net *net = |
ba6b918a | 160 | container_of(table->data, struct net, ipv4.ping_group_range.range); |
396a30cc | 161 | write_seqlock(&net->ipv4.ping_group_range.lock); |
7064d16e EB |
162 | data[0] = low; |
163 | data[1] = high; | |
396a30cc | 164 | write_sequnlock(&net->ipv4.ping_group_range.lock); |
c319b4d7 VK |
165 | } |
166 | ||
167 | /* Validate changes from /proc interface. */ | |
fe2c6338 | 168 | static int ipv4_ping_group_range(struct ctl_table *table, int write, |
c319b4d7 VK |
169 | void __user *buffer, |
170 | size_t *lenp, loff_t *ppos) | |
171 | { | |
7064d16e | 172 | struct user_namespace *user_ns = current_user_ns(); |
c319b4d7 | 173 | int ret; |
7064d16e EB |
174 | gid_t urange[2]; |
175 | kgid_t low, high; | |
fe2c6338 | 176 | struct ctl_table tmp = { |
7064d16e EB |
177 | .data = &urange, |
178 | .maxlen = sizeof(urange), | |
c319b4d7 VK |
179 | .mode = table->mode, |
180 | .extra1 = &ip_ping_group_range_min, | |
181 | .extra2 = &ip_ping_group_range_max, | |
182 | }; | |
183 | ||
7064d16e EB |
184 | inet_get_ping_group_range_table(table, &low, &high); |
185 | urange[0] = from_kgid_munged(user_ns, low); | |
186 | urange[1] = from_kgid_munged(user_ns, high); | |
c319b4d7 VK |
187 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
188 | ||
7064d16e EB |
189 | if (write && ret == 0) { |
190 | low = make_kgid(user_ns, urange[0]); | |
191 | high = make_kgid(user_ns, urange[1]); | |
192 | if (!gid_valid(low) || !gid_valid(high) || | |
193 | (urange[1] < urange[0]) || gid_lt(high, low)) { | |
194 | low = make_kgid(&init_user_ns, 1); | |
195 | high = make_kgid(&init_user_ns, 0); | |
196 | } | |
197 | set_ping_group_range(table, low, high); | |
198 | } | |
c319b4d7 VK |
199 | |
200 | return ret; | |
201 | } | |
202 | ||
fe2c6338 | 203 | static int proc_tcp_congestion_control(struct ctl_table *ctl, int write, |
317a76f9 SH |
204 | void __user *buffer, size_t *lenp, loff_t *ppos) |
205 | { | |
6670e152 SH |
206 | struct net *net = container_of(ctl->data, struct net, |
207 | ipv4.tcp_congestion_control); | |
317a76f9 | 208 | char val[TCP_CA_NAME_MAX]; |
fe2c6338 | 209 | struct ctl_table tbl = { |
317a76f9 SH |
210 | .data = val, |
211 | .maxlen = TCP_CA_NAME_MAX, | |
212 | }; | |
213 | int ret; | |
214 | ||
6670e152 | 215 | tcp_get_default_congestion_control(net, val); |
317a76f9 | 216 | |
8d65af78 | 217 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
317a76f9 | 218 | if (write && ret == 0) |
6670e152 | 219 | ret = tcp_set_default_congestion_control(net, val); |
317a76f9 SH |
220 | return ret; |
221 | } | |
222 | ||
fe2c6338 | 223 | static int proc_tcp_available_congestion_control(struct ctl_table *ctl, |
8d65af78 | 224 | int write, |
3ff825b2 SH |
225 | void __user *buffer, size_t *lenp, |
226 | loff_t *ppos) | |
227 | { | |
fe2c6338 | 228 | struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; |
3ff825b2 SH |
229 | int ret; |
230 | ||
231 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
232 | if (!tbl.data) | |
233 | return -ENOMEM; | |
234 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); | |
8d65af78 | 235 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
3ff825b2 SH |
236 | kfree(tbl.data); |
237 | return ret; | |
238 | } | |
239 | ||
fe2c6338 | 240 | static int proc_allowed_congestion_control(struct ctl_table *ctl, |
8d65af78 | 241 | int write, |
ce7bc3bf SH |
242 | void __user *buffer, size_t *lenp, |
243 | loff_t *ppos) | |
244 | { | |
fe2c6338 | 245 | struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; |
ce7bc3bf SH |
246 | int ret; |
247 | ||
248 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
249 | if (!tbl.data) | |
250 | return -ENOMEM; | |
251 | ||
252 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); | |
8d65af78 | 253 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
ce7bc3bf SH |
254 | if (write && ret == 0) |
255 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
256 | kfree(tbl.data); | |
257 | return ret; | |
258 | } | |
259 | ||
43713848 | 260 | static int proc_tcp_fastopen_key(struct ctl_table *table, int write, |
fe2c6338 JP |
261 | void __user *buffer, size_t *lenp, |
262 | loff_t *ppos) | |
10467163 | 263 | { |
43713848 HY |
264 | struct net *net = container_of(table->data, struct net, |
265 | ipv4.sysctl_tcp_fastopen); | |
fe2c6338 | 266 | struct ctl_table tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) }; |
10467163 | 267 | struct tcp_fastopen_context *ctxt; |
10467163 | 268 | u32 user_key[4]; /* 16 bytes, matching TCP_FASTOPEN_KEY_LENGTH */ |
c860e997 YC |
269 | __le32 key[4]; |
270 | int ret, i; | |
10467163 JC |
271 | |
272 | tbl.data = kmalloc(tbl.maxlen, GFP_KERNEL); | |
273 | if (!tbl.data) | |
274 | return -ENOMEM; | |
275 | ||
276 | rcu_read_lock(); | |
43713848 | 277 | ctxt = rcu_dereference(net->ipv4.tcp_fastopen_ctx); |
10467163 | 278 | if (ctxt) |
c860e997 | 279 | memcpy(key, ctxt->key, TCP_FASTOPEN_KEY_LENGTH); |
0e24c4fc | 280 | else |
c860e997 | 281 | memset(key, 0, sizeof(key)); |
10467163 JC |
282 | rcu_read_unlock(); |
283 | ||
c860e997 YC |
284 | for (i = 0; i < ARRAY_SIZE(key); i++) |
285 | user_key[i] = le32_to_cpu(key[i]); | |
286 | ||
10467163 JC |
287 | snprintf(tbl.data, tbl.maxlen, "%08x-%08x-%08x-%08x", |
288 | user_key[0], user_key[1], user_key[2], user_key[3]); | |
289 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); | |
290 | ||
291 | if (write && ret == 0) { | |
292 | if (sscanf(tbl.data, "%x-%x-%x-%x", user_key, user_key + 1, | |
293 | user_key + 2, user_key + 3) != 4) { | |
294 | ret = -EINVAL; | |
295 | goto bad_key; | |
296 | } | |
c860e997 YC |
297 | |
298 | for (i = 0; i < ARRAY_SIZE(user_key); i++) | |
299 | key[i] = cpu_to_le32(user_key[i]); | |
300 | ||
301 | tcp_fastopen_reset_cipher(net, NULL, key, | |
1fba70e5 | 302 | TCP_FASTOPEN_KEY_LENGTH); |
10467163 JC |
303 | } |
304 | ||
305 | bad_key: | |
306 | pr_debug("proc FO key set 0x%x-%x-%x-%x <- 0x%s: %u\n", | |
c860e997 | 307 | user_key[0], user_key[1], user_key[2], user_key[3], |
10467163 JC |
308 | (char *)tbl.data, ret); |
309 | kfree(tbl.data); | |
310 | return ret; | |
311 | } | |
312 | ||
dddb64bc SAK |
313 | static void proc_configure_early_demux(int enabled, int protocol) |
314 | { | |
315 | struct net_protocol *ipprot; | |
316 | #if IS_ENABLED(CONFIG_IPV6) | |
317 | struct inet6_protocol *ip6prot; | |
318 | #endif | |
319 | ||
58c4c6a3 DA |
320 | rcu_read_lock(); |
321 | ||
dddb64bc SAK |
322 | ipprot = rcu_dereference(inet_protos[protocol]); |
323 | if (ipprot) | |
324 | ipprot->early_demux = enabled ? ipprot->early_demux_handler : | |
325 | NULL; | |
326 | ||
327 | #if IS_ENABLED(CONFIG_IPV6) | |
328 | ip6prot = rcu_dereference(inet6_protos[protocol]); | |
329 | if (ip6prot) | |
330 | ip6prot->early_demux = enabled ? ip6prot->early_demux_handler : | |
331 | NULL; | |
332 | #endif | |
58c4c6a3 | 333 | rcu_read_unlock(); |
dddb64bc SAK |
334 | } |
335 | ||
336 | static int proc_tcp_early_demux(struct ctl_table *table, int write, | |
337 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
338 | { | |
339 | int ret = 0; | |
340 | ||
341 | ret = proc_dointvec(table, write, buffer, lenp, ppos); | |
342 | ||
343 | if (write && !ret) { | |
344 | int enabled = init_net.ipv4.sysctl_tcp_early_demux; | |
345 | ||
346 | proc_configure_early_demux(enabled, IPPROTO_TCP); | |
347 | } | |
348 | ||
349 | return ret; | |
350 | } | |
351 | ||
352 | static int proc_udp_early_demux(struct ctl_table *table, int write, | |
353 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
354 | { | |
355 | int ret = 0; | |
356 | ||
357 | ret = proc_dointvec(table, write, buffer, lenp, ppos); | |
358 | ||
359 | if (write && !ret) { | |
360 | int enabled = init_net.ipv4.sysctl_udp_early_demux; | |
361 | ||
362 | proc_configure_early_demux(enabled, IPPROTO_UDP); | |
363 | } | |
364 | ||
365 | return ret; | |
366 | } | |
367 | ||
cf1ef3f0 WW |
368 | static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table, |
369 | int write, | |
370 | void __user *buffer, | |
371 | size_t *lenp, loff_t *ppos) | |
372 | { | |
3733be14 HY |
373 | struct net *net = container_of(table->data, struct net, |
374 | ipv4.sysctl_tcp_fastopen_blackhole_timeout); | |
cf1ef3f0 WW |
375 | int ret; |
376 | ||
377 | ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
378 | if (write && ret == 0) | |
3733be14 | 379 | atomic_set(&net->ipv4.tfo_active_disable_times, 0); |
734942cc DW |
380 | |
381 | return ret; | |
382 | } | |
383 | ||
384 | static int proc_tcp_available_ulp(struct ctl_table *ctl, | |
385 | int write, | |
386 | void __user *buffer, size_t *lenp, | |
387 | loff_t *ppos) | |
388 | { | |
389 | struct ctl_table tbl = { .maxlen = TCP_ULP_BUF_MAX, }; | |
390 | int ret; | |
391 | ||
392 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
393 | if (!tbl.data) | |
394 | return -ENOMEM; | |
395 | tcp_get_available_ulp(tbl.data, TCP_ULP_BUF_MAX); | |
396 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); | |
397 | kfree(tbl.data); | |
398 | ||
cf1ef3f0 WW |
399 | return ret; |
400 | } | |
401 | ||
3ae6ec08 IS |
402 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
403 | static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write, | |
404 | void __user *buffer, size_t *lenp, | |
405 | loff_t *ppos) | |
406 | { | |
407 | struct net *net = container_of(table->data, struct net, | |
408 | ipv4.sysctl_fib_multipath_hash_policy); | |
409 | int ret; | |
410 | ||
411 | ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
412 | if (write && ret == 0) | |
3192dac6 | 413 | call_netevent_notifiers(NETEVENT_IPV4_MPATH_HASH_UPDATE, net); |
3ae6ec08 IS |
414 | |
415 | return ret; | |
416 | } | |
417 | #endif | |
418 | ||
3e37c3f9 | 419 | static struct ctl_table ipv4_table[] = { |
1da177e4 | 420 | { |
1da177e4 LT |
421 | .procname = "tcp_max_orphans", |
422 | .data = &sysctl_tcp_max_orphans, | |
423 | .maxlen = sizeof(int), | |
424 | .mode = 0644, | |
6d9f239a | 425 | .proc_handler = proc_dointvec |
1da177e4 | 426 | }, |
1da177e4 | 427 | { |
1da177e4 LT |
428 | .procname = "inet_peer_threshold", |
429 | .data = &inet_peer_threshold, | |
430 | .maxlen = sizeof(int), | |
431 | .mode = 0644, | |
6d9f239a | 432 | .proc_handler = proc_dointvec |
1da177e4 LT |
433 | }, |
434 | { | |
1da177e4 LT |
435 | .procname = "inet_peer_minttl", |
436 | .data = &inet_peer_minttl, | |
437 | .maxlen = sizeof(int), | |
438 | .mode = 0644, | |
6d9f239a | 439 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
440 | }, |
441 | { | |
1da177e4 LT |
442 | .procname = "inet_peer_maxttl", |
443 | .data = &inet_peer_maxttl, | |
444 | .maxlen = sizeof(int), | |
445 | .mode = 0644, | |
6d9f239a | 446 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 | 447 | }, |
a4fe34bf EB |
448 | { |
449 | .procname = "tcp_mem", | |
450 | .maxlen = sizeof(sysctl_tcp_mem), | |
451 | .data = &sysctl_tcp_mem, | |
452 | .mode = 0644, | |
453 | .proc_handler = proc_doulongvec_minmax, | |
454 | }, | |
1da177e4 | 455 | { |
1da177e4 LT |
456 | .procname = "tcp_low_latency", |
457 | .data = &sysctl_tcp_low_latency, | |
458 | .maxlen = sizeof(int), | |
459 | .mode = 0644, | |
6d9f239a | 460 | .proc_handler = proc_dointvec |
1da177e4 | 461 | }, |
446fda4f PM |
462 | #ifdef CONFIG_NETLABEL |
463 | { | |
446fda4f PM |
464 | .procname = "cipso_cache_enable", |
465 | .data = &cipso_v4_cache_enabled, | |
466 | .maxlen = sizeof(int), | |
467 | .mode = 0644, | |
6d9f239a | 468 | .proc_handler = proc_dointvec, |
446fda4f PM |
469 | }, |
470 | { | |
446fda4f PM |
471 | .procname = "cipso_cache_bucket_size", |
472 | .data = &cipso_v4_cache_bucketsize, | |
473 | .maxlen = sizeof(int), | |
474 | .mode = 0644, | |
6d9f239a | 475 | .proc_handler = proc_dointvec, |
446fda4f PM |
476 | }, |
477 | { | |
446fda4f PM |
478 | .procname = "cipso_rbm_optfmt", |
479 | .data = &cipso_v4_rbm_optfmt, | |
480 | .maxlen = sizeof(int), | |
481 | .mode = 0644, | |
6d9f239a | 482 | .proc_handler = proc_dointvec, |
446fda4f PM |
483 | }, |
484 | { | |
446fda4f PM |
485 | .procname = "cipso_rbm_strictvalid", |
486 | .data = &cipso_v4_rbm_strictvalid, | |
487 | .maxlen = sizeof(int), | |
488 | .mode = 0644, | |
6d9f239a | 489 | .proc_handler = proc_dointvec, |
446fda4f PM |
490 | }, |
491 | #endif /* CONFIG_NETLABEL */ | |
3ff825b2 | 492 | { |
3ff825b2 SH |
493 | .procname = "tcp_available_congestion_control", |
494 | .maxlen = TCP_CA_BUF_MAX, | |
495 | .mode = 0444, | |
6d9f239a | 496 | .proc_handler = proc_tcp_available_congestion_control, |
3ff825b2 | 497 | }, |
ce7bc3bf | 498 | { |
ce7bc3bf SH |
499 | .procname = "tcp_allowed_congestion_control", |
500 | .maxlen = TCP_CA_BUF_MAX, | |
501 | .mode = 0644, | |
6d9f239a | 502 | .proc_handler = proc_allowed_congestion_control, |
ce7bc3bf | 503 | }, |
734942cc DW |
504 | { |
505 | .procname = "tcp_available_ulp", | |
506 | .maxlen = TCP_ULP_BUF_MAX, | |
507 | .mode = 0444, | |
508 | .proc_handler = proc_tcp_available_ulp, | |
509 | }, | |
4cdf507d ED |
510 | { |
511 | .procname = "icmp_msgs_per_sec", | |
512 | .data = &sysctl_icmp_msgs_per_sec, | |
513 | .maxlen = sizeof(int), | |
514 | .mode = 0644, | |
515 | .proc_handler = proc_dointvec_minmax, | |
516 | .extra1 = &zero, | |
517 | }, | |
518 | { | |
519 | .procname = "icmp_msgs_burst", | |
520 | .data = &sysctl_icmp_msgs_burst, | |
521 | .maxlen = sizeof(int), | |
522 | .mode = 0644, | |
523 | .proc_handler = proc_dointvec_minmax, | |
524 | .extra1 = &zero, | |
525 | }, | |
95766fff | 526 | { |
95766fff HA |
527 | .procname = "udp_mem", |
528 | .data = &sysctl_udp_mem, | |
529 | .maxlen = sizeof(sysctl_udp_mem), | |
530 | .mode = 0644, | |
8d987e5c | 531 | .proc_handler = proc_doulongvec_minmax, |
95766fff | 532 | }, |
f8572d8f | 533 | { } |
1da177e4 | 534 | }; |
3e37c3f9 | 535 | |
68528f09 PE |
536 | static struct ctl_table ipv4_net_table[] = { |
537 | { | |
68528f09 PE |
538 | .procname = "icmp_echo_ignore_all", |
539 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_all, | |
540 | .maxlen = sizeof(int), | |
541 | .mode = 0644, | |
6d9f239a | 542 | .proc_handler = proc_dointvec |
68528f09 PE |
543 | }, |
544 | { | |
68528f09 PE |
545 | .procname = "icmp_echo_ignore_broadcasts", |
546 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts, | |
547 | .maxlen = sizeof(int), | |
548 | .mode = 0644, | |
6d9f239a | 549 | .proc_handler = proc_dointvec |
68528f09 PE |
550 | }, |
551 | { | |
68528f09 PE |
552 | .procname = "icmp_ignore_bogus_error_responses", |
553 | .data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses, | |
554 | .maxlen = sizeof(int), | |
555 | .mode = 0644, | |
6d9f239a | 556 | .proc_handler = proc_dointvec |
68528f09 PE |
557 | }, |
558 | { | |
68528f09 PE |
559 | .procname = "icmp_errors_use_inbound_ifaddr", |
560 | .data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr, | |
561 | .maxlen = sizeof(int), | |
562 | .mode = 0644, | |
6d9f239a | 563 | .proc_handler = proc_dointvec |
68528f09 PE |
564 | }, |
565 | { | |
68528f09 PE |
566 | .procname = "icmp_ratelimit", |
567 | .data = &init_net.ipv4.sysctl_icmp_ratelimit, | |
568 | .maxlen = sizeof(int), | |
569 | .mode = 0644, | |
6d9f239a | 570 | .proc_handler = proc_dointvec_ms_jiffies, |
68528f09 PE |
571 | }, |
572 | { | |
68528f09 PE |
573 | .procname = "icmp_ratemask", |
574 | .data = &init_net.ipv4.sysctl_icmp_ratemask, | |
575 | .maxlen = sizeof(int), | |
576 | .mode = 0644, | |
6d9f239a | 577 | .proc_handler = proc_dointvec |
68528f09 | 578 | }, |
c319b4d7 VK |
579 | { |
580 | .procname = "ping_group_range", | |
ba6b918a | 581 | .data = &init_net.ipv4.ping_group_range.range, |
7064d16e | 582 | .maxlen = sizeof(gid_t)*2, |
c319b4d7 VK |
583 | .mode = 0644, |
584 | .proc_handler = ipv4_ping_group_range, | |
585 | }, | |
5d134f1c HFS |
586 | { |
587 | .procname = "tcp_ecn", | |
588 | .data = &init_net.ipv4.sysctl_tcp_ecn, | |
589 | .maxlen = sizeof(int), | |
590 | .mode = 0644, | |
591 | .proc_handler = proc_dointvec | |
592 | }, | |
49213555 DB |
593 | { |
594 | .procname = "tcp_ecn_fallback", | |
595 | .data = &init_net.ipv4.sysctl_tcp_ecn_fallback, | |
596 | .maxlen = sizeof(int), | |
597 | .mode = 0644, | |
598 | .proc_handler = proc_dointvec | |
599 | }, | |
287b7f38 NB |
600 | { |
601 | .procname = "ip_dynaddr", | |
602 | .data = &init_net.ipv4.sysctl_ip_dynaddr, | |
603 | .maxlen = sizeof(int), | |
604 | .mode = 0644, | |
605 | .proc_handler = proc_dointvec | |
606 | }, | |
e21145a9 NB |
607 | { |
608 | .procname = "ip_early_demux", | |
609 | .data = &init_net.ipv4.sysctl_ip_early_demux, | |
610 | .maxlen = sizeof(int), | |
611 | .mode = 0644, | |
612 | .proc_handler = proc_dointvec | |
613 | }, | |
dddb64bc SAK |
614 | { |
615 | .procname = "udp_early_demux", | |
616 | .data = &init_net.ipv4.sysctl_udp_early_demux, | |
617 | .maxlen = sizeof(int), | |
618 | .mode = 0644, | |
619 | .proc_handler = proc_udp_early_demux | |
620 | }, | |
621 | { | |
622 | .procname = "tcp_early_demux", | |
623 | .data = &init_net.ipv4.sysctl_tcp_early_demux, | |
624 | .maxlen = sizeof(int), | |
625 | .mode = 0644, | |
626 | .proc_handler = proc_tcp_early_demux | |
627 | }, | |
fa50d974 NB |
628 | { |
629 | .procname = "ip_default_ttl", | |
630 | .data = &init_net.ipv4.sysctl_ip_default_ttl, | |
631 | .maxlen = sizeof(int), | |
632 | .mode = 0644, | |
633 | .proc_handler = proc_dointvec_minmax, | |
634 | .extra1 = &ip_ttl_min, | |
635 | .extra2 = &ip_ttl_max, | |
636 | }, | |
0bbf87d8 EB |
637 | { |
638 | .procname = "ip_local_port_range", | |
c9d8f1a6 CW |
639 | .maxlen = sizeof(init_net.ipv4.ip_local_ports.range), |
640 | .data = &init_net.ipv4.ip_local_ports.range, | |
0bbf87d8 EB |
641 | .mode = 0644, |
642 | .proc_handler = ipv4_local_port_range, | |
643 | }, | |
122ff243 WC |
644 | { |
645 | .procname = "ip_local_reserved_ports", | |
646 | .data = &init_net.ipv4.sysctl_local_reserved_ports, | |
647 | .maxlen = 65536, | |
648 | .mode = 0644, | |
649 | .proc_handler = proc_do_large_bitmap, | |
650 | }, | |
974eda11 HFS |
651 | { |
652 | .procname = "ip_no_pmtu_disc", | |
653 | .data = &init_net.ipv4.sysctl_ip_no_pmtu_disc, | |
654 | .maxlen = sizeof(int), | |
655 | .mode = 0644, | |
656 | .proc_handler = proc_dointvec | |
657 | }, | |
f87c10a8 HFS |
658 | { |
659 | .procname = "ip_forward_use_pmtu", | |
660 | .data = &init_net.ipv4.sysctl_ip_fwd_use_pmtu, | |
661 | .maxlen = sizeof(int), | |
662 | .mode = 0644, | |
663 | .proc_handler = proc_dointvec, | |
664 | }, | |
49a60158 VB |
665 | { |
666 | .procname = "ip_nonlocal_bind", | |
667 | .data = &init_net.ipv4.sysctl_ip_nonlocal_bind, | |
668 | .maxlen = sizeof(int), | |
669 | .mode = 0644, | |
670 | .proc_handler = proc_dointvec | |
671 | }, | |
e110861f LC |
672 | { |
673 | .procname = "fwmark_reflect", | |
674 | .data = &init_net.ipv4.sysctl_fwmark_reflect, | |
675 | .maxlen = sizeof(int), | |
676 | .mode = 0644, | |
677 | .proc_handler = proc_dointvec, | |
678 | }, | |
84f39b08 LC |
679 | { |
680 | .procname = "tcp_fwmark_accept", | |
681 | .data = &init_net.ipv4.sysctl_tcp_fwmark_accept, | |
682 | .maxlen = sizeof(int), | |
683 | .mode = 0644, | |
684 | .proc_handler = proc_dointvec, | |
685 | }, | |
6dd9a14e DA |
686 | #ifdef CONFIG_NET_L3_MASTER_DEV |
687 | { | |
688 | .procname = "tcp_l3mdev_accept", | |
689 | .data = &init_net.ipv4.sysctl_tcp_l3mdev_accept, | |
690 | .maxlen = sizeof(int), | |
691 | .mode = 0644, | |
692 | .proc_handler = proc_dointvec_minmax, | |
693 | .extra1 = &zero, | |
694 | .extra2 = &one, | |
695 | }, | |
696 | #endif | |
b0f9ca53 FD |
697 | { |
698 | .procname = "tcp_mtu_probing", | |
699 | .data = &init_net.ipv4.sysctl_tcp_mtu_probing, | |
700 | .maxlen = sizeof(int), | |
701 | .mode = 0644, | |
702 | .proc_handler = proc_dointvec, | |
703 | }, | |
704 | { | |
705 | .procname = "tcp_base_mss", | |
706 | .data = &init_net.ipv4.sysctl_tcp_base_mss, | |
707 | .maxlen = sizeof(int), | |
708 | .mode = 0644, | |
709 | .proc_handler = proc_dointvec, | |
710 | }, | |
6b58e0a5 FD |
711 | { |
712 | .procname = "tcp_probe_threshold", | |
713 | .data = &init_net.ipv4.sysctl_tcp_probe_threshold, | |
714 | .maxlen = sizeof(int), | |
715 | .mode = 0644, | |
716 | .proc_handler = proc_dointvec, | |
717 | }, | |
05cbc0db FD |
718 | { |
719 | .procname = "tcp_probe_interval", | |
720 | .data = &init_net.ipv4.sysctl_tcp_probe_interval, | |
721 | .maxlen = sizeof(int), | |
722 | .mode = 0644, | |
723 | .proc_handler = proc_dointvec, | |
724 | }, | |
df2cf4a7 PD |
725 | { |
726 | .procname = "igmp_link_local_mcast_reports", | |
87a8a2ae | 727 | .data = &init_net.ipv4.sysctl_igmp_llm_reports, |
df2cf4a7 PD |
728 | .maxlen = sizeof(int), |
729 | .mode = 0644, | |
730 | .proc_handler = proc_dointvec | |
731 | }, | |
815c5270 NB |
732 | { |
733 | .procname = "igmp_max_memberships", | |
734 | .data = &init_net.ipv4.sysctl_igmp_max_memberships, | |
735 | .maxlen = sizeof(int), | |
736 | .mode = 0644, | |
737 | .proc_handler = proc_dointvec | |
738 | }, | |
166b6b2d NB |
739 | { |
740 | .procname = "igmp_max_msf", | |
741 | .data = &init_net.ipv4.sysctl_igmp_max_msf, | |
742 | .maxlen = sizeof(int), | |
743 | .mode = 0644, | |
744 | .proc_handler = proc_dointvec | |
745 | }, | |
165094af NB |
746 | #ifdef CONFIG_IP_MULTICAST |
747 | { | |
748 | .procname = "igmp_qrv", | |
749 | .data = &init_net.ipv4.sysctl_igmp_qrv, | |
750 | .maxlen = sizeof(int), | |
751 | .mode = 0644, | |
752 | .proc_handler = proc_dointvec_minmax, | |
753 | .extra1 = &one | |
754 | }, | |
755 | #endif | |
6670e152 SH |
756 | { |
757 | .procname = "tcp_congestion_control", | |
758 | .data = &init_net.ipv4.tcp_congestion_control, | |
759 | .mode = 0644, | |
760 | .maxlen = TCP_CA_NAME_MAX, | |
761 | .proc_handler = proc_tcp_congestion_control, | |
762 | }, | |
13b287e8 NB |
763 | { |
764 | .procname = "tcp_keepalive_time", | |
765 | .data = &init_net.ipv4.sysctl_tcp_keepalive_time, | |
766 | .maxlen = sizeof(int), | |
767 | .mode = 0644, | |
768 | .proc_handler = proc_dointvec_jiffies, | |
769 | }, | |
9bd6861b NB |
770 | { |
771 | .procname = "tcp_keepalive_probes", | |
772 | .data = &init_net.ipv4.sysctl_tcp_keepalive_probes, | |
773 | .maxlen = sizeof(int), | |
774 | .mode = 0644, | |
775 | .proc_handler = proc_dointvec | |
776 | }, | |
b840d15d NB |
777 | { |
778 | .procname = "tcp_keepalive_intvl", | |
779 | .data = &init_net.ipv4.sysctl_tcp_keepalive_intvl, | |
780 | .maxlen = sizeof(int), | |
781 | .mode = 0644, | |
782 | .proc_handler = proc_dointvec_jiffies, | |
783 | }, | |
6fa25166 NB |
784 | { |
785 | .procname = "tcp_syn_retries", | |
786 | .data = &init_net.ipv4.sysctl_tcp_syn_retries, | |
787 | .maxlen = sizeof(int), | |
788 | .mode = 0644, | |
789 | .proc_handler = proc_dointvec_minmax, | |
790 | .extra1 = &tcp_syn_retries_min, | |
791 | .extra2 = &tcp_syn_retries_max | |
792 | }, | |
7c083ecb NB |
793 | { |
794 | .procname = "tcp_synack_retries", | |
795 | .data = &init_net.ipv4.sysctl_tcp_synack_retries, | |
796 | .maxlen = sizeof(int), | |
797 | .mode = 0644, | |
798 | .proc_handler = proc_dointvec | |
799 | }, | |
12ed8244 NB |
800 | #ifdef CONFIG_SYN_COOKIES |
801 | { | |
802 | .procname = "tcp_syncookies", | |
803 | .data = &init_net.ipv4.sysctl_tcp_syncookies, | |
804 | .maxlen = sizeof(int), | |
805 | .mode = 0644, | |
806 | .proc_handler = proc_dointvec | |
807 | }, | |
808 | #endif | |
1043e25f NB |
809 | { |
810 | .procname = "tcp_reordering", | |
811 | .data = &init_net.ipv4.sysctl_tcp_reordering, | |
812 | .maxlen = sizeof(int), | |
813 | .mode = 0644, | |
814 | .proc_handler = proc_dointvec | |
815 | }, | |
ae5c3f40 NB |
816 | { |
817 | .procname = "tcp_retries1", | |
818 | .data = &init_net.ipv4.sysctl_tcp_retries1, | |
819 | .maxlen = sizeof(int), | |
820 | .mode = 0644, | |
821 | .proc_handler = proc_dointvec_minmax, | |
822 | .extra2 = &tcp_retr1_max | |
823 | }, | |
c6214a97 NB |
824 | { |
825 | .procname = "tcp_retries2", | |
826 | .data = &init_net.ipv4.sysctl_tcp_retries2, | |
827 | .maxlen = sizeof(int), | |
828 | .mode = 0644, | |
829 | .proc_handler = proc_dointvec | |
830 | }, | |
c402d9be NB |
831 | { |
832 | .procname = "tcp_orphan_retries", | |
833 | .data = &init_net.ipv4.sysctl_tcp_orphan_retries, | |
834 | .maxlen = sizeof(int), | |
835 | .mode = 0644, | |
836 | .proc_handler = proc_dointvec | |
837 | }, | |
1e579caa NB |
838 | { |
839 | .procname = "tcp_fin_timeout", | |
840 | .data = &init_net.ipv4.sysctl_tcp_fin_timeout, | |
841 | .maxlen = sizeof(int), | |
842 | .mode = 0644, | |
843 | .proc_handler = proc_dointvec_jiffies, | |
844 | }, | |
4979f2d9 NB |
845 | { |
846 | .procname = "tcp_notsent_lowat", | |
847 | .data = &init_net.ipv4.sysctl_tcp_notsent_lowat, | |
848 | .maxlen = sizeof(unsigned int), | |
849 | .mode = 0644, | |
b007f090 | 850 | .proc_handler = proc_douintvec, |
4979f2d9 | 851 | }, |
56ab6b93 HY |
852 | { |
853 | .procname = "tcp_tw_reuse", | |
854 | .data = &init_net.ipv4.sysctl_tcp_tw_reuse, | |
855 | .maxlen = sizeof(int), | |
856 | .mode = 0644, | |
79e9fed4 MŻ |
857 | .proc_handler = proc_dointvec_minmax, |
858 | .extra1 = &zero, | |
859 | .extra2 = &two, | |
56ab6b93 | 860 | }, |
1946e672 HY |
861 | { |
862 | .procname = "tcp_max_tw_buckets", | |
863 | .data = &init_net.ipv4.tcp_death_row.sysctl_max_tw_buckets, | |
864 | .maxlen = sizeof(int), | |
865 | .mode = 0644, | |
866 | .proc_handler = proc_dointvec | |
867 | }, | |
fee83d09 HY |
868 | { |
869 | .procname = "tcp_max_syn_backlog", | |
870 | .data = &init_net.ipv4.sysctl_max_syn_backlog, | |
871 | .maxlen = sizeof(int), | |
872 | .mode = 0644, | |
873 | .proc_handler = proc_dointvec | |
874 | }, | |
e1cfcbe8 HY |
875 | { |
876 | .procname = "tcp_fastopen", | |
877 | .data = &init_net.ipv4.sysctl_tcp_fastopen, | |
878 | .maxlen = sizeof(int), | |
879 | .mode = 0644, | |
880 | .proc_handler = proc_dointvec, | |
881 | }, | |
43713848 HY |
882 | { |
883 | .procname = "tcp_fastopen_key", | |
884 | .mode = 0600, | |
885 | .data = &init_net.ipv4.sysctl_tcp_fastopen, | |
886 | .maxlen = ((TCP_FASTOPEN_KEY_LENGTH * 2) + 10), | |
887 | .proc_handler = proc_tcp_fastopen_key, | |
888 | }, | |
3733be14 HY |
889 | { |
890 | .procname = "tcp_fastopen_blackhole_timeout_sec", | |
891 | .data = &init_net.ipv4.sysctl_tcp_fastopen_blackhole_timeout, | |
892 | .maxlen = sizeof(int), | |
893 | .mode = 0644, | |
894 | .proc_handler = proc_tfo_blackhole_detect_timeout, | |
895 | .extra1 = &zero, | |
896 | }, | |
a6db4494 DA |
897 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
898 | { | |
899 | .procname = "fib_multipath_use_neigh", | |
900 | .data = &init_net.ipv4.sysctl_fib_multipath_use_neigh, | |
901 | .maxlen = sizeof(int), | |
902 | .mode = 0644, | |
903 | .proc_handler = proc_dointvec_minmax, | |
bf4e0a3d NA |
904 | .extra1 = &zero, |
905 | .extra2 = &one, | |
906 | }, | |
907 | { | |
908 | .procname = "fib_multipath_hash_policy", | |
909 | .data = &init_net.ipv4.sysctl_fib_multipath_hash_policy, | |
910 | .maxlen = sizeof(int), | |
911 | .mode = 0644, | |
3ae6ec08 | 912 | .proc_handler = proc_fib_multipath_hash_policy, |
a6db4494 DA |
913 | .extra1 = &zero, |
914 | .extra2 = &one, | |
915 | }, | |
916 | #endif | |
4548b683 KJ |
917 | { |
918 | .procname = "ip_unprivileged_port_start", | |
919 | .maxlen = sizeof(int), | |
920 | .data = &init_net.ipv4.sysctl_ip_prot_sock, | |
921 | .mode = 0644, | |
922 | .proc_handler = ipv4_privileged_ports, | |
923 | }, | |
63a6fff3 RS |
924 | #ifdef CONFIG_NET_L3_MASTER_DEV |
925 | { | |
926 | .procname = "udp_l3mdev_accept", | |
927 | .data = &init_net.ipv4.sysctl_udp_l3mdev_accept, | |
928 | .maxlen = sizeof(int), | |
929 | .mode = 0644, | |
930 | .proc_handler = proc_dointvec_minmax, | |
931 | .extra1 = &zero, | |
932 | .extra2 = &one, | |
933 | }, | |
934 | #endif | |
f9301034 ED |
935 | { |
936 | .procname = "tcp_sack", | |
937 | .data = &init_net.ipv4.sysctl_tcp_sack, | |
938 | .maxlen = sizeof(int), | |
939 | .mode = 0644, | |
940 | .proc_handler = proc_dointvec | |
941 | }, | |
9bb37ef0 ED |
942 | { |
943 | .procname = "tcp_window_scaling", | |
944 | .data = &init_net.ipv4.sysctl_tcp_window_scaling, | |
945 | .maxlen = sizeof(int), | |
946 | .mode = 0644, | |
947 | .proc_handler = proc_dointvec | |
948 | }, | |
5d2ed052 ED |
949 | { |
950 | .procname = "tcp_timestamps", | |
951 | .data = &init_net.ipv4.sysctl_tcp_timestamps, | |
952 | .maxlen = sizeof(int), | |
953 | .mode = 0644, | |
954 | .proc_handler = proc_dointvec | |
955 | }, | |
2ae21cf5 ED |
956 | { |
957 | .procname = "tcp_early_retrans", | |
958 | .data = &init_net.ipv4.sysctl_tcp_early_retrans, | |
959 | .maxlen = sizeof(int), | |
960 | .mode = 0644, | |
961 | .proc_handler = proc_dointvec_minmax, | |
962 | .extra1 = &zero, | |
963 | .extra2 = &four, | |
964 | }, | |
e20223f1 ED |
965 | { |
966 | .procname = "tcp_recovery", | |
967 | .data = &init_net.ipv4.sysctl_tcp_recovery, | |
968 | .maxlen = sizeof(int), | |
969 | .mode = 0644, | |
970 | .proc_handler = proc_dointvec, | |
971 | }, | |
2c04ac8a ED |
972 | { |
973 | .procname = "tcp_thin_linear_timeouts", | |
974 | .data = &init_net.ipv4.sysctl_tcp_thin_linear_timeouts, | |
975 | .maxlen = sizeof(int), | |
976 | .mode = 0644, | |
977 | .proc_handler = proc_dointvec | |
978 | }, | |
b510f0d2 ED |
979 | { |
980 | .procname = "tcp_slow_start_after_idle", | |
981 | .data = &init_net.ipv4.sysctl_tcp_slow_start_after_idle, | |
982 | .maxlen = sizeof(int), | |
983 | .mode = 0644, | |
984 | .proc_handler = proc_dointvec | |
985 | }, | |
e0a1e5b5 ED |
986 | { |
987 | .procname = "tcp_retrans_collapse", | |
988 | .data = &init_net.ipv4.sysctl_tcp_retrans_collapse, | |
989 | .maxlen = sizeof(int), | |
990 | .mode = 0644, | |
991 | .proc_handler = proc_dointvec | |
992 | }, | |
3f4c7c6f ED |
993 | { |
994 | .procname = "tcp_stdurg", | |
995 | .data = &init_net.ipv4.sysctl_tcp_stdurg, | |
996 | .maxlen = sizeof(int), | |
997 | .mode = 0644, | |
998 | .proc_handler = proc_dointvec | |
999 | }, | |
625357aa ED |
1000 | { |
1001 | .procname = "tcp_rfc1337", | |
1002 | .data = &init_net.ipv4.sysctl_tcp_rfc1337, | |
1003 | .maxlen = sizeof(int), | |
1004 | .mode = 0644, | |
1005 | .proc_handler = proc_dointvec | |
1006 | }, | |
65c9410c ED |
1007 | { |
1008 | .procname = "tcp_abort_on_overflow", | |
1009 | .data = &init_net.ipv4.sysctl_tcp_abort_on_overflow, | |
1010 | .maxlen = sizeof(int), | |
1011 | .mode = 0644, | |
1012 | .proc_handler = proc_dointvec | |
1013 | }, | |
0bc65a28 ED |
1014 | { |
1015 | .procname = "tcp_fack", | |
1016 | .data = &init_net.ipv4.sysctl_tcp_fack, | |
1017 | .maxlen = sizeof(int), | |
1018 | .mode = 0644, | |
1019 | .proc_handler = proc_dointvec | |
1020 | }, | |
c6e21803 ED |
1021 | { |
1022 | .procname = "tcp_max_reordering", | |
1023 | .data = &init_net.ipv4.sysctl_tcp_max_reordering, | |
1024 | .maxlen = sizeof(int), | |
1025 | .mode = 0644, | |
1026 | .proc_handler = proc_dointvec | |
1027 | }, | |
6496f6bd ED |
1028 | { |
1029 | .procname = "tcp_dsack", | |
1030 | .data = &init_net.ipv4.sysctl_tcp_dsack, | |
1031 | .maxlen = sizeof(int), | |
1032 | .mode = 0644, | |
1033 | .proc_handler = proc_dointvec | |
1034 | }, | |
0c12654a ED |
1035 | { |
1036 | .procname = "tcp_app_win", | |
1037 | .data = &init_net.ipv4.sysctl_tcp_app_win, | |
1038 | .maxlen = sizeof(int), | |
1039 | .mode = 0644, | |
1040 | .proc_handler = proc_dointvec | |
1041 | }, | |
94f0893e ED |
1042 | { |
1043 | .procname = "tcp_adv_win_scale", | |
1044 | .data = &init_net.ipv4.sysctl_tcp_adv_win_scale, | |
1045 | .maxlen = sizeof(int), | |
1046 | .mode = 0644, | |
1047 | .proc_handler = proc_dointvec_minmax, | |
1048 | .extra1 = &tcp_adv_win_scale_min, | |
1049 | .extra2 = &tcp_adv_win_scale_max, | |
1050 | }, | |
af9b69a7 ED |
1051 | { |
1052 | .procname = "tcp_frto", | |
1053 | .data = &init_net.ipv4.sysctl_tcp_frto, | |
1054 | .maxlen = sizeof(int), | |
1055 | .mode = 0644, | |
1056 | .proc_handler = proc_dointvec | |
1057 | }, | |
ec36e416 ED |
1058 | { |
1059 | .procname = "tcp_no_metrics_save", | |
1060 | .data = &init_net.ipv4.sysctl_tcp_nometrics_save, | |
1061 | .maxlen = sizeof(int), | |
1062 | .mode = 0644, | |
1063 | .proc_handler = proc_dointvec, | |
1064 | }, | |
4540c0cf ED |
1065 | { |
1066 | .procname = "tcp_moderate_rcvbuf", | |
1067 | .data = &init_net.ipv4.sysctl_tcp_moderate_rcvbuf, | |
1068 | .maxlen = sizeof(int), | |
1069 | .mode = 0644, | |
1070 | .proc_handler = proc_dointvec, | |
1071 | }, | |
d06a9904 ED |
1072 | { |
1073 | .procname = "tcp_tso_win_divisor", | |
1074 | .data = &init_net.ipv4.sysctl_tcp_tso_win_divisor, | |
1075 | .maxlen = sizeof(int), | |
1076 | .mode = 0644, | |
1077 | .proc_handler = proc_dointvec, | |
1078 | }, | |
ceef9ab6 ED |
1079 | { |
1080 | .procname = "tcp_workaround_signed_windows", | |
1081 | .data = &init_net.ipv4.sysctl_tcp_workaround_signed_windows, | |
1082 | .maxlen = sizeof(int), | |
1083 | .mode = 0644, | |
1084 | .proc_handler = proc_dointvec | |
1085 | }, | |
9184d8bb ED |
1086 | { |
1087 | .procname = "tcp_limit_output_bytes", | |
1088 | .data = &init_net.ipv4.sysctl_tcp_limit_output_bytes, | |
1089 | .maxlen = sizeof(int), | |
1090 | .mode = 0644, | |
1091 | .proc_handler = proc_dointvec | |
1092 | }, | |
b530b681 ED |
1093 | { |
1094 | .procname = "tcp_challenge_ack_limit", | |
1095 | .data = &init_net.ipv4.sysctl_tcp_challenge_ack_limit, | |
1096 | .maxlen = sizeof(int), | |
1097 | .mode = 0644, | |
1098 | .proc_handler = proc_dointvec | |
1099 | }, | |
26e9596e ED |
1100 | { |
1101 | .procname = "tcp_min_tso_segs", | |
1102 | .data = &init_net.ipv4.sysctl_tcp_min_tso_segs, | |
1103 | .maxlen = sizeof(int), | |
1104 | .mode = 0644, | |
1105 | .proc_handler = proc_dointvec_minmax, | |
1106 | .extra1 = &one, | |
1107 | .extra2 = &gso_max_segs, | |
1108 | }, | |
bd239704 ED |
1109 | { |
1110 | .procname = "tcp_min_rtt_wlen", | |
1111 | .data = &init_net.ipv4.sysctl_tcp_min_rtt_wlen, | |
1112 | .maxlen = sizeof(int), | |
1113 | .mode = 0644, | |
1114 | .proc_handler = proc_dointvec | |
1115 | }, | |
790f00e1 ED |
1116 | { |
1117 | .procname = "tcp_autocorking", | |
1118 | .data = &init_net.ipv4.sysctl_tcp_autocorking, | |
1119 | .maxlen = sizeof(int), | |
1120 | .mode = 0644, | |
1121 | .proc_handler = proc_dointvec_minmax, | |
1122 | .extra1 = &zero, | |
1123 | .extra2 = &one, | |
1124 | }, | |
4170ba6b ED |
1125 | { |
1126 | .procname = "tcp_invalid_ratelimit", | |
1127 | .data = &init_net.ipv4.sysctl_tcp_invalid_ratelimit, | |
1128 | .maxlen = sizeof(int), | |
1129 | .mode = 0644, | |
1130 | .proc_handler = proc_dointvec_ms_jiffies, | |
1131 | }, | |
23a7102a ED |
1132 | { |
1133 | .procname = "tcp_pacing_ss_ratio", | |
1134 | .data = &init_net.ipv4.sysctl_tcp_pacing_ss_ratio, | |
1135 | .maxlen = sizeof(int), | |
1136 | .mode = 0644, | |
1137 | .proc_handler = proc_dointvec_minmax, | |
1138 | .extra1 = &zero, | |
1139 | .extra2 = &thousand, | |
1140 | }, | |
c26e91f8 ED |
1141 | { |
1142 | .procname = "tcp_pacing_ca_ratio", | |
1143 | .data = &init_net.ipv4.sysctl_tcp_pacing_ca_ratio, | |
1144 | .maxlen = sizeof(int), | |
1145 | .mode = 0644, | |
1146 | .proc_handler = proc_dointvec_minmax, | |
1147 | .extra1 = &zero, | |
1148 | .extra2 = &thousand, | |
1149 | }, | |
356d1833 ED |
1150 | { |
1151 | .procname = "tcp_wmem", | |
1152 | .data = &init_net.ipv4.sysctl_tcp_wmem, | |
1153 | .maxlen = sizeof(init_net.ipv4.sysctl_tcp_wmem), | |
1154 | .mode = 0644, | |
1155 | .proc_handler = proc_dointvec_minmax, | |
1156 | .extra1 = &one, | |
1157 | }, | |
1158 | { | |
1159 | .procname = "tcp_rmem", | |
1160 | .data = &init_net.ipv4.sysctl_tcp_rmem, | |
1161 | .maxlen = sizeof(init_net.ipv4.sysctl_tcp_rmem), | |
1162 | .mode = 0644, | |
1163 | .proc_handler = proc_dointvec_minmax, | |
1164 | .extra1 = &one, | |
1165 | }, | |
6d82aa24 ED |
1166 | { |
1167 | .procname = "tcp_comp_sack_delay_ns", | |
1168 | .data = &init_net.ipv4.sysctl_tcp_comp_sack_delay_ns, | |
1169 | .maxlen = sizeof(unsigned long), | |
1170 | .mode = 0644, | |
1171 | .proc_handler = proc_doulongvec_minmax, | |
1172 | }, | |
9c21d2fc ED |
1173 | { |
1174 | .procname = "tcp_comp_sack_nr", | |
1175 | .data = &init_net.ipv4.sysctl_tcp_comp_sack_nr, | |
1176 | .maxlen = sizeof(int), | |
1177 | .mode = 0644, | |
1178 | .proc_handler = proc_dointvec_minmax, | |
1179 | .extra1 = &zero, | |
1180 | .extra2 = &comp_sack_nr_max, | |
1181 | }, | |
1e802951 TZ |
1182 | { |
1183 | .procname = "udp_rmem_min", | |
1184 | .data = &init_net.ipv4.sysctl_udp_rmem_min, | |
1185 | .maxlen = sizeof(init_net.ipv4.sysctl_udp_rmem_min), | |
1186 | .mode = 0644, | |
1187 | .proc_handler = proc_dointvec_minmax, | |
1188 | .extra1 = &one | |
1189 | }, | |
1190 | { | |
1191 | .procname = "udp_wmem_min", | |
1192 | .data = &init_net.ipv4.sysctl_udp_wmem_min, | |
1193 | .maxlen = sizeof(init_net.ipv4.sysctl_udp_wmem_min), | |
1194 | .mode = 0644, | |
1195 | .proc_handler = proc_dointvec_minmax, | |
1196 | .extra1 = &one | |
1197 | }, | |
68528f09 PE |
1198 | { } |
1199 | }; | |
1200 | ||
1577519d PE |
1201 | static __net_init int ipv4_sysctl_init_net(struct net *net) |
1202 | { | |
68528f09 PE |
1203 | struct ctl_table *table; |
1204 | ||
1205 | table = ipv4_net_table; | |
09ad9bc7 | 1206 | if (!net_eq(net, &init_net)) { |
0a6fa23d EB |
1207 | int i; |
1208 | ||
68528f09 | 1209 | table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL); |
51456b29 | 1210 | if (!table) |
68528f09 PE |
1211 | goto err_alloc; |
1212 | ||
0a6fa23d EB |
1213 | /* Update the variables to point into the current struct net */ |
1214 | for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++) | |
1215 | table[i].data += (void *)net - (void *)&init_net; | |
68528f09 PE |
1216 | } |
1217 | ||
ec8f23ce | 1218 | net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table); |
51456b29 | 1219 | if (!net->ipv4.ipv4_hdr) |
68528f09 PE |
1220 | goto err_reg; |
1221 | ||
122ff243 WC |
1222 | net->ipv4.sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL); |
1223 | if (!net->ipv4.sysctl_local_reserved_ports) | |
1224 | goto err_ports; | |
1225 | ||
1577519d | 1226 | return 0; |
68528f09 | 1227 | |
122ff243 WC |
1228 | err_ports: |
1229 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
68528f09 | 1230 | err_reg: |
09ad9bc7 | 1231 | if (!net_eq(net, &init_net)) |
68528f09 PE |
1232 | kfree(table); |
1233 | err_alloc: | |
1234 | return -ENOMEM; | |
1577519d PE |
1235 | } |
1236 | ||
1237 | static __net_exit void ipv4_sysctl_exit_net(struct net *net) | |
1238 | { | |
68528f09 PE |
1239 | struct ctl_table *table; |
1240 | ||
122ff243 | 1241 | kfree(net->ipv4.sysctl_local_reserved_ports); |
68528f09 PE |
1242 | table = net->ipv4.ipv4_hdr->ctl_table_arg; |
1243 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
1244 | kfree(table); | |
1577519d PE |
1245 | } |
1246 | ||
1247 | static __net_initdata struct pernet_operations ipv4_sysctl_ops = { | |
1248 | .init = ipv4_sysctl_init_net, | |
1249 | .exit = ipv4_sysctl_exit_net, | |
1250 | }; | |
1251 | ||
3e37c3f9 PE |
1252 | static __init int sysctl_ipv4_init(void) |
1253 | { | |
1254 | struct ctl_table_header *hdr; | |
1255 | ||
ec8f23ce | 1256 | hdr = register_net_sysctl(&init_net, "net/ipv4", ipv4_table); |
51456b29 | 1257 | if (!hdr) |
1577519d PE |
1258 | return -ENOMEM; |
1259 | ||
1260 | if (register_pernet_subsys(&ipv4_sysctl_ops)) { | |
5dd3df10 | 1261 | unregister_net_sysctl_table(hdr); |
1577519d PE |
1262 | return -ENOMEM; |
1263 | } | |
1264 | ||
1265 | return 0; | |
3e37c3f9 PE |
1266 | } |
1267 | ||
1268 | __initcall(sysctl_ipv4_init); |