]>
Commit | Line | Data |
---|---|---|
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; |
6ba8a3b1 | 33 | static int four = 4; |
43e122b0 | 34 | static int thousand = 1000; |
95bd09eb | 35 | static int gso_max_segs = GSO_MAX_SEGS; |
e905a9ed | 36 | static int tcp_retr1_max = 255; |
1da177e4 LT |
37 | static int ip_local_port_range_min[] = { 1, 1 }; |
38 | static int ip_local_port_range_max[] = { 65535, 65535 }; | |
0147fc05 AD |
39 | static int tcp_adv_win_scale_min = -31; |
40 | static int tcp_adv_win_scale_max = 31; | |
be208663 ED |
41 | static int tcp_min_snd_mss_min = TCP_MIN_SND_MSS; |
42 | static int tcp_min_snd_mss_max = 65535; | |
4548b683 KJ |
43 | static int ip_privileged_port_min; |
44 | static int ip_privileged_port_max = 65535; | |
249fab77 ED |
45 | static int ip_ttl_min = 1; |
46 | static int ip_ttl_max = 255; | |
651e9271 MT |
47 | static int tcp_syn_retries_min = 1; |
48 | static int tcp_syn_retries_max = MAX_TCP_SYNCNT; | |
c319b4d7 VK |
49 | static int ip_ping_group_range_min[] = { 0, 0 }; |
50 | static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX }; | |
f0ab7645 | 51 | static int one_day_secs = 24 * 3600; |
1da177e4 | 52 | |
b6690b14 FW |
53 | /* obsolete */ |
54 | static int sysctl_tcp_low_latency __read_mostly; | |
55 | ||
227b60f5 | 56 | /* Update system visible IP port range */ |
0bbf87d8 | 57 | static void set_local_port_range(struct net *net, int range[2]) |
227b60f5 | 58 | { |
ed2dfd90 ED |
59 | bool same_parity = !((range[0] ^ range[1]) & 1); |
60 | ||
4ee3bd4a | 61 | write_seqlock_bh(&net->ipv4.ip_local_ports.lock); |
ed2dfd90 ED |
62 | if (same_parity && !net->ipv4.ip_local_ports.warned) { |
63 | net->ipv4.ip_local_ports.warned = true; | |
64 | pr_err_ratelimited("ip_local_port_range: prefer different parity for start/end values.\n"); | |
65 | } | |
c9d8f1a6 CW |
66 | net->ipv4.ip_local_ports.range[0] = range[0]; |
67 | net->ipv4.ip_local_ports.range[1] = range[1]; | |
4ee3bd4a | 68 | write_sequnlock_bh(&net->ipv4.ip_local_ports.lock); |
227b60f5 SH |
69 | } |
70 | ||
71 | /* Validate changes from /proc interface. */ | |
fe2c6338 | 72 | static int ipv4_local_port_range(struct ctl_table *table, int write, |
227b60f5 SH |
73 | void __user *buffer, |
74 | size_t *lenp, loff_t *ppos) | |
75 | { | |
0bbf87d8 | 76 | struct net *net = |
c9d8f1a6 | 77 | container_of(table->data, struct net, ipv4.ip_local_ports.range); |
227b60f5 | 78 | int ret; |
3c689b73 | 79 | int range[2]; |
fe2c6338 | 80 | struct ctl_table tmp = { |
227b60f5 SH |
81 | .data = &range, |
82 | .maxlen = sizeof(range), | |
83 | .mode = table->mode, | |
84 | .extra1 = &ip_local_port_range_min, | |
85 | .extra2 = &ip_local_port_range_max, | |
86 | }; | |
87 | ||
0bbf87d8 EB |
88 | inet_get_local_port_range(net, &range[0], &range[1]); |
89 | ||
8d65af78 | 90 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
227b60f5 SH |
91 | |
92 | if (write && ret == 0) { | |
4548b683 KJ |
93 | /* Ensure that the upper limit is not smaller than the lower, |
94 | * and that the lower does not encroach upon the privileged | |
95 | * port limit. | |
96 | */ | |
97 | if ((range[1] < range[0]) || | |
98 | (range[0] < net->ipv4.sysctl_ip_prot_sock)) | |
227b60f5 SH |
99 | ret = -EINVAL; |
100 | else | |
0bbf87d8 | 101 | set_local_port_range(net, range); |
227b60f5 SH |
102 | } |
103 | ||
104 | return ret; | |
105 | } | |
106 | ||
4548b683 KJ |
107 | /* Validate changes from /proc interface. */ |
108 | static int ipv4_privileged_ports(struct ctl_table *table, int write, | |
109 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
110 | { | |
111 | struct net *net = container_of(table->data, struct net, | |
112 | ipv4.sysctl_ip_prot_sock); | |
113 | int ret; | |
114 | int pports; | |
115 | int range[2]; | |
116 | struct ctl_table tmp = { | |
117 | .data = &pports, | |
118 | .maxlen = sizeof(pports), | |
119 | .mode = table->mode, | |
120 | .extra1 = &ip_privileged_port_min, | |
121 | .extra2 = &ip_privileged_port_max, | |
122 | }; | |
123 | ||
124 | pports = net->ipv4.sysctl_ip_prot_sock; | |
125 | ||
126 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); | |
127 | ||
128 | if (write && ret == 0) { | |
129 | inet_get_local_port_range(net, &range[0], &range[1]); | |
130 | /* Ensure that the local port range doesn't overlap with the | |
131 | * privileged port range. | |
132 | */ | |
133 | if (range[0] < pports) | |
134 | ret = -EINVAL; | |
135 | else | |
136 | net->ipv4.sysctl_ip_prot_sock = pports; | |
137 | } | |
138 | ||
139 | return ret; | |
140 | } | |
c319b4d7 | 141 | |
7064d16e | 142 | static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high) |
c319b4d7 | 143 | { |
7064d16e | 144 | kgid_t *data = table->data; |
0bbf87d8 | 145 | struct net *net = |
ba6b918a | 146 | container_of(table->data, struct net, ipv4.ping_group_range.range); |
95c96174 | 147 | unsigned int seq; |
c319b4d7 | 148 | do { |
396a30cc | 149 | seq = read_seqbegin(&net->ipv4.ping_group_range.lock); |
c319b4d7 VK |
150 | |
151 | *low = data[0]; | |
152 | *high = data[1]; | |
396a30cc | 153 | } while (read_seqretry(&net->ipv4.ping_group_range.lock, seq)); |
c319b4d7 VK |
154 | } |
155 | ||
156 | /* Update system visible IP port range */ | |
7064d16e | 157 | static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high) |
c319b4d7 | 158 | { |
7064d16e | 159 | kgid_t *data = table->data; |
0bbf87d8 | 160 | struct net *net = |
ba6b918a | 161 | container_of(table->data, struct net, ipv4.ping_group_range.range); |
396a30cc | 162 | write_seqlock(&net->ipv4.ping_group_range.lock); |
7064d16e EB |
163 | data[0] = low; |
164 | data[1] = high; | |
396a30cc | 165 | write_sequnlock(&net->ipv4.ping_group_range.lock); |
c319b4d7 VK |
166 | } |
167 | ||
168 | /* Validate changes from /proc interface. */ | |
fe2c6338 | 169 | static int ipv4_ping_group_range(struct ctl_table *table, int write, |
c319b4d7 VK |
170 | void __user *buffer, |
171 | size_t *lenp, loff_t *ppos) | |
172 | { | |
7064d16e | 173 | struct user_namespace *user_ns = current_user_ns(); |
c319b4d7 | 174 | int ret; |
7064d16e EB |
175 | gid_t urange[2]; |
176 | kgid_t low, high; | |
fe2c6338 | 177 | struct ctl_table tmp = { |
7064d16e EB |
178 | .data = &urange, |
179 | .maxlen = sizeof(urange), | |
c319b4d7 VK |
180 | .mode = table->mode, |
181 | .extra1 = &ip_ping_group_range_min, | |
182 | .extra2 = &ip_ping_group_range_max, | |
183 | }; | |
184 | ||
7064d16e EB |
185 | inet_get_ping_group_range_table(table, &low, &high); |
186 | urange[0] = from_kgid_munged(user_ns, low); | |
187 | urange[1] = from_kgid_munged(user_ns, high); | |
c319b4d7 VK |
188 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
189 | ||
7064d16e EB |
190 | if (write && ret == 0) { |
191 | low = make_kgid(user_ns, urange[0]); | |
192 | high = make_kgid(user_ns, urange[1]); | |
756bfe6c TH |
193 | if (!gid_valid(low) || !gid_valid(high)) |
194 | return -EINVAL; | |
195 | if (urange[1] < urange[0] || gid_lt(high, low)) { | |
7064d16e EB |
196 | low = make_kgid(&init_user_ns, 1); |
197 | high = make_kgid(&init_user_ns, 0); | |
198 | } | |
199 | set_ping_group_range(table, low, high); | |
200 | } | |
c319b4d7 VK |
201 | |
202 | return ret; | |
203 | } | |
204 | ||
fe2c6338 | 205 | static int proc_tcp_congestion_control(struct ctl_table *ctl, int write, |
317a76f9 SH |
206 | void __user *buffer, size_t *lenp, loff_t *ppos) |
207 | { | |
6670e152 SH |
208 | struct net *net = container_of(ctl->data, struct net, |
209 | ipv4.tcp_congestion_control); | |
317a76f9 | 210 | char val[TCP_CA_NAME_MAX]; |
fe2c6338 | 211 | struct ctl_table tbl = { |
317a76f9 SH |
212 | .data = val, |
213 | .maxlen = TCP_CA_NAME_MAX, | |
214 | }; | |
215 | int ret; | |
216 | ||
6670e152 | 217 | tcp_get_default_congestion_control(net, val); |
317a76f9 | 218 | |
8d65af78 | 219 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
317a76f9 | 220 | if (write && ret == 0) |
6670e152 | 221 | ret = tcp_set_default_congestion_control(net, val); |
317a76f9 SH |
222 | return ret; |
223 | } | |
224 | ||
fe2c6338 | 225 | static int proc_tcp_available_congestion_control(struct ctl_table *ctl, |
8d65af78 | 226 | int write, |
3ff825b2 SH |
227 | void __user *buffer, size_t *lenp, |
228 | loff_t *ppos) | |
229 | { | |
fe2c6338 | 230 | struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; |
3ff825b2 SH |
231 | int ret; |
232 | ||
233 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
234 | if (!tbl.data) | |
235 | return -ENOMEM; | |
236 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); | |
8d65af78 | 237 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
3ff825b2 SH |
238 | kfree(tbl.data); |
239 | return ret; | |
240 | } | |
241 | ||
fe2c6338 | 242 | static int proc_allowed_congestion_control(struct ctl_table *ctl, |
8d65af78 | 243 | int write, |
ce7bc3bf SH |
244 | void __user *buffer, size_t *lenp, |
245 | loff_t *ppos) | |
246 | { | |
fe2c6338 | 247 | struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; |
ce7bc3bf SH |
248 | int ret; |
249 | ||
250 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
251 | if (!tbl.data) | |
252 | return -ENOMEM; | |
253 | ||
254 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); | |
8d65af78 | 255 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
ce7bc3bf SH |
256 | if (write && ret == 0) |
257 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
258 | kfree(tbl.data); | |
259 | return ret; | |
260 | } | |
261 | ||
43713848 | 262 | static int proc_tcp_fastopen_key(struct ctl_table *table, int write, |
fe2c6338 JP |
263 | void __user *buffer, size_t *lenp, |
264 | loff_t *ppos) | |
10467163 | 265 | { |
43713848 HY |
266 | struct net *net = container_of(table->data, struct net, |
267 | ipv4.sysctl_tcp_fastopen); | |
fe2c6338 | 268 | struct ctl_table tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) }; |
10467163 | 269 | struct tcp_fastopen_context *ctxt; |
10467163 | 270 | u32 user_key[4]; /* 16 bytes, matching TCP_FASTOPEN_KEY_LENGTH */ |
1db0c6b6 YC |
271 | __le32 key[4]; |
272 | int ret, i; | |
10467163 JC |
273 | |
274 | tbl.data = kmalloc(tbl.maxlen, GFP_KERNEL); | |
275 | if (!tbl.data) | |
276 | return -ENOMEM; | |
277 | ||
278 | rcu_read_lock(); | |
43713848 | 279 | ctxt = rcu_dereference(net->ipv4.tcp_fastopen_ctx); |
10467163 | 280 | if (ctxt) |
1db0c6b6 | 281 | memcpy(key, ctxt->key, TCP_FASTOPEN_KEY_LENGTH); |
0e24c4fc | 282 | else |
1db0c6b6 | 283 | memset(key, 0, sizeof(key)); |
10467163 JC |
284 | rcu_read_unlock(); |
285 | ||
1db0c6b6 YC |
286 | for (i = 0; i < ARRAY_SIZE(key); i++) |
287 | user_key[i] = le32_to_cpu(key[i]); | |
288 | ||
10467163 JC |
289 | snprintf(tbl.data, tbl.maxlen, "%08x-%08x-%08x-%08x", |
290 | user_key[0], user_key[1], user_key[2], user_key[3]); | |
291 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); | |
292 | ||
293 | if (write && ret == 0) { | |
294 | if (sscanf(tbl.data, "%x-%x-%x-%x", user_key, user_key + 1, | |
295 | user_key + 2, user_key + 3) != 4) { | |
296 | ret = -EINVAL; | |
297 | goto bad_key; | |
298 | } | |
1db0c6b6 YC |
299 | |
300 | for (i = 0; i < ARRAY_SIZE(user_key); i++) | |
301 | key[i] = cpu_to_le32(user_key[i]); | |
302 | ||
303 | tcp_fastopen_reset_cipher(net, NULL, key, | |
1fba70e5 | 304 | TCP_FASTOPEN_KEY_LENGTH); |
10467163 JC |
305 | } |
306 | ||
307 | bad_key: | |
308 | pr_debug("proc FO key set 0x%x-%x-%x-%x <- 0x%s: %u\n", | |
1db0c6b6 | 309 | user_key[0], user_key[1], user_key[2], user_key[3], |
10467163 JC |
310 | (char *)tbl.data, ret); |
311 | kfree(tbl.data); | |
312 | return ret; | |
313 | } | |
314 | ||
dddb64bc SAK |
315 | static void proc_configure_early_demux(int enabled, int protocol) |
316 | { | |
317 | struct net_protocol *ipprot; | |
318 | #if IS_ENABLED(CONFIG_IPV6) | |
319 | struct inet6_protocol *ip6prot; | |
320 | #endif | |
321 | ||
58c4c6a3 DA |
322 | rcu_read_lock(); |
323 | ||
dddb64bc SAK |
324 | ipprot = rcu_dereference(inet_protos[protocol]); |
325 | if (ipprot) | |
326 | ipprot->early_demux = enabled ? ipprot->early_demux_handler : | |
327 | NULL; | |
328 | ||
329 | #if IS_ENABLED(CONFIG_IPV6) | |
330 | ip6prot = rcu_dereference(inet6_protos[protocol]); | |
331 | if (ip6prot) | |
332 | ip6prot->early_demux = enabled ? ip6prot->early_demux_handler : | |
333 | NULL; | |
334 | #endif | |
58c4c6a3 | 335 | rcu_read_unlock(); |
dddb64bc SAK |
336 | } |
337 | ||
338 | static int proc_tcp_early_demux(struct ctl_table *table, int write, | |
339 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
340 | { | |
341 | int ret = 0; | |
342 | ||
343 | ret = proc_dointvec(table, write, buffer, lenp, ppos); | |
344 | ||
345 | if (write && !ret) { | |
346 | int enabled = init_net.ipv4.sysctl_tcp_early_demux; | |
347 | ||
348 | proc_configure_early_demux(enabled, IPPROTO_TCP); | |
349 | } | |
350 | ||
351 | return ret; | |
352 | } | |
353 | ||
354 | static int proc_udp_early_demux(struct ctl_table *table, int write, | |
355 | void __user *buffer, size_t *lenp, loff_t *ppos) | |
356 | { | |
357 | int ret = 0; | |
358 | ||
359 | ret = proc_dointvec(table, write, buffer, lenp, ppos); | |
360 | ||
361 | if (write && !ret) { | |
362 | int enabled = init_net.ipv4.sysctl_udp_early_demux; | |
363 | ||
364 | proc_configure_early_demux(enabled, IPPROTO_UDP); | |
365 | } | |
366 | ||
367 | return ret; | |
368 | } | |
369 | ||
cf1ef3f0 WW |
370 | static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table, |
371 | int write, | |
372 | void __user *buffer, | |
373 | size_t *lenp, loff_t *ppos) | |
374 | { | |
3733be14 HY |
375 | struct net *net = container_of(table->data, struct net, |
376 | ipv4.sysctl_tcp_fastopen_blackhole_timeout); | |
cf1ef3f0 WW |
377 | int ret; |
378 | ||
379 | ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
380 | if (write && ret == 0) | |
3733be14 | 381 | atomic_set(&net->ipv4.tfo_active_disable_times, 0); |
734942cc DW |
382 | |
383 | return ret; | |
384 | } | |
385 | ||
386 | static int proc_tcp_available_ulp(struct ctl_table *ctl, | |
387 | int write, | |
388 | void __user *buffer, size_t *lenp, | |
389 | loff_t *ppos) | |
390 | { | |
391 | struct ctl_table tbl = { .maxlen = TCP_ULP_BUF_MAX, }; | |
392 | int ret; | |
393 | ||
394 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
395 | if (!tbl.data) | |
396 | return -ENOMEM; | |
397 | tcp_get_available_ulp(tbl.data, TCP_ULP_BUF_MAX); | |
398 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); | |
399 | kfree(tbl.data); | |
400 | ||
cf1ef3f0 WW |
401 | return ret; |
402 | } | |
403 | ||
3ae6ec08 IS |
404 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
405 | static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write, | |
406 | void __user *buffer, size_t *lenp, | |
407 | loff_t *ppos) | |
408 | { | |
409 | struct net *net = container_of(table->data, struct net, | |
410 | ipv4.sysctl_fib_multipath_hash_policy); | |
411 | int ret; | |
412 | ||
413 | ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
414 | if (write && ret == 0) | |
415 | call_netevent_notifiers(NETEVENT_MULTIPATH_HASH_UPDATE, net); | |
416 | ||
417 | return ret; | |
418 | } | |
419 | #endif | |
420 | ||
3e37c3f9 | 421 | static struct ctl_table ipv4_table[] = { |
1da177e4 | 422 | { |
1da177e4 LT |
423 | .procname = "tcp_max_orphans", |
424 | .data = &sysctl_tcp_max_orphans, | |
425 | .maxlen = sizeof(int), | |
426 | .mode = 0644, | |
6d9f239a | 427 | .proc_handler = proc_dointvec |
1da177e4 | 428 | }, |
1da177e4 | 429 | { |
1da177e4 LT |
430 | .procname = "inet_peer_threshold", |
431 | .data = &inet_peer_threshold, | |
432 | .maxlen = sizeof(int), | |
433 | .mode = 0644, | |
6d9f239a | 434 | .proc_handler = proc_dointvec |
1da177e4 LT |
435 | }, |
436 | { | |
1da177e4 LT |
437 | .procname = "inet_peer_minttl", |
438 | .data = &inet_peer_minttl, | |
439 | .maxlen = sizeof(int), | |
440 | .mode = 0644, | |
6d9f239a | 441 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
442 | }, |
443 | { | |
1da177e4 LT |
444 | .procname = "inet_peer_maxttl", |
445 | .data = &inet_peer_maxttl, | |
446 | .maxlen = sizeof(int), | |
447 | .mode = 0644, | |
6d9f239a | 448 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 | 449 | }, |
a4fe34bf EB |
450 | { |
451 | .procname = "tcp_mem", | |
452 | .maxlen = sizeof(sysctl_tcp_mem), | |
453 | .data = &sysctl_tcp_mem, | |
454 | .mode = 0644, | |
455 | .proc_handler = proc_doulongvec_minmax, | |
456 | }, | |
1da177e4 | 457 | { |
1da177e4 LT |
458 | .procname = "tcp_low_latency", |
459 | .data = &sysctl_tcp_low_latency, | |
460 | .maxlen = sizeof(int), | |
461 | .mode = 0644, | |
6d9f239a | 462 | .proc_handler = proc_dointvec |
1da177e4 | 463 | }, |
446fda4f PM |
464 | #ifdef CONFIG_NETLABEL |
465 | { | |
446fda4f PM |
466 | .procname = "cipso_cache_enable", |
467 | .data = &cipso_v4_cache_enabled, | |
468 | .maxlen = sizeof(int), | |
469 | .mode = 0644, | |
6d9f239a | 470 | .proc_handler = proc_dointvec, |
446fda4f PM |
471 | }, |
472 | { | |
446fda4f PM |
473 | .procname = "cipso_cache_bucket_size", |
474 | .data = &cipso_v4_cache_bucketsize, | |
475 | .maxlen = sizeof(int), | |
476 | .mode = 0644, | |
6d9f239a | 477 | .proc_handler = proc_dointvec, |
446fda4f PM |
478 | }, |
479 | { | |
446fda4f PM |
480 | .procname = "cipso_rbm_optfmt", |
481 | .data = &cipso_v4_rbm_optfmt, | |
482 | .maxlen = sizeof(int), | |
483 | .mode = 0644, | |
6d9f239a | 484 | .proc_handler = proc_dointvec, |
446fda4f PM |
485 | }, |
486 | { | |
446fda4f PM |
487 | .procname = "cipso_rbm_strictvalid", |
488 | .data = &cipso_v4_rbm_strictvalid, | |
489 | .maxlen = sizeof(int), | |
490 | .mode = 0644, | |
6d9f239a | 491 | .proc_handler = proc_dointvec, |
446fda4f PM |
492 | }, |
493 | #endif /* CONFIG_NETLABEL */ | |
3ff825b2 | 494 | { |
3ff825b2 SH |
495 | .procname = "tcp_available_congestion_control", |
496 | .maxlen = TCP_CA_BUF_MAX, | |
497 | .mode = 0444, | |
6d9f239a | 498 | .proc_handler = proc_tcp_available_congestion_control, |
3ff825b2 | 499 | }, |
ce7bc3bf | 500 | { |
ce7bc3bf SH |
501 | .procname = "tcp_allowed_congestion_control", |
502 | .maxlen = TCP_CA_BUF_MAX, | |
503 | .mode = 0644, | |
6d9f239a | 504 | .proc_handler = proc_allowed_congestion_control, |
ce7bc3bf | 505 | }, |
734942cc DW |
506 | { |
507 | .procname = "tcp_available_ulp", | |
508 | .maxlen = TCP_ULP_BUF_MAX, | |
509 | .mode = 0444, | |
510 | .proc_handler = proc_tcp_available_ulp, | |
511 | }, | |
4cdf507d ED |
512 | { |
513 | .procname = "icmp_msgs_per_sec", | |
514 | .data = &sysctl_icmp_msgs_per_sec, | |
515 | .maxlen = sizeof(int), | |
516 | .mode = 0644, | |
517 | .proc_handler = proc_dointvec_minmax, | |
518 | .extra1 = &zero, | |
519 | }, | |
520 | { | |
521 | .procname = "icmp_msgs_burst", | |
522 | .data = &sysctl_icmp_msgs_burst, | |
523 | .maxlen = sizeof(int), | |
524 | .mode = 0644, | |
525 | .proc_handler = proc_dointvec_minmax, | |
526 | .extra1 = &zero, | |
527 | }, | |
95766fff | 528 | { |
95766fff HA |
529 | .procname = "udp_mem", |
530 | .data = &sysctl_udp_mem, | |
531 | .maxlen = sizeof(sysctl_udp_mem), | |
532 | .mode = 0644, | |
8d987e5c | 533 | .proc_handler = proc_doulongvec_minmax, |
95766fff HA |
534 | }, |
535 | { | |
95766fff HA |
536 | .procname = "udp_rmem_min", |
537 | .data = &sysctl_udp_rmem_min, | |
538 | .maxlen = sizeof(sysctl_udp_rmem_min), | |
539 | .mode = 0644, | |
6d9f239a | 540 | .proc_handler = proc_dointvec_minmax, |
5d37852b | 541 | .extra1 = &one |
95766fff HA |
542 | }, |
543 | { | |
95766fff HA |
544 | .procname = "udp_wmem_min", |
545 | .data = &sysctl_udp_wmem_min, | |
546 | .maxlen = sizeof(sysctl_udp_wmem_min), | |
547 | .mode = 0644, | |
6d9f239a | 548 | .proc_handler = proc_dointvec_minmax, |
5d37852b | 549 | .extra1 = &one |
95766fff | 550 | }, |
f8572d8f | 551 | { } |
1da177e4 | 552 | }; |
3e37c3f9 | 553 | |
68528f09 PE |
554 | static struct ctl_table ipv4_net_table[] = { |
555 | { | |
68528f09 PE |
556 | .procname = "icmp_echo_ignore_all", |
557 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_all, | |
558 | .maxlen = sizeof(int), | |
559 | .mode = 0644, | |
f0ab7645 Z |
560 | .proc_handler = proc_dointvec_minmax, |
561 | .extra1 = &zero, | |
562 | .extra2 = &one_day_secs | |
68528f09 PE |
563 | }, |
564 | { | |
68528f09 PE |
565 | .procname = "icmp_echo_ignore_broadcasts", |
566 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts, | |
567 | .maxlen = sizeof(int), | |
568 | .mode = 0644, | |
6d9f239a | 569 | .proc_handler = proc_dointvec |
68528f09 PE |
570 | }, |
571 | { | |
68528f09 PE |
572 | .procname = "icmp_ignore_bogus_error_responses", |
573 | .data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses, | |
574 | .maxlen = sizeof(int), | |
575 | .mode = 0644, | |
6d9f239a | 576 | .proc_handler = proc_dointvec |
68528f09 PE |
577 | }, |
578 | { | |
68528f09 PE |
579 | .procname = "icmp_errors_use_inbound_ifaddr", |
580 | .data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr, | |
581 | .maxlen = sizeof(int), | |
582 | .mode = 0644, | |
6d9f239a | 583 | .proc_handler = proc_dointvec |
68528f09 PE |
584 | }, |
585 | { | |
68528f09 PE |
586 | .procname = "icmp_ratelimit", |
587 | .data = &init_net.ipv4.sysctl_icmp_ratelimit, | |
588 | .maxlen = sizeof(int), | |
589 | .mode = 0644, | |
6d9f239a | 590 | .proc_handler = proc_dointvec_ms_jiffies, |
68528f09 PE |
591 | }, |
592 | { | |
68528f09 PE |
593 | .procname = "icmp_ratemask", |
594 | .data = &init_net.ipv4.sysctl_icmp_ratemask, | |
595 | .maxlen = sizeof(int), | |
596 | .mode = 0644, | |
6d9f239a | 597 | .proc_handler = proc_dointvec |
68528f09 | 598 | }, |
c319b4d7 VK |
599 | { |
600 | .procname = "ping_group_range", | |
ba6b918a | 601 | .data = &init_net.ipv4.ping_group_range.range, |
7064d16e | 602 | .maxlen = sizeof(gid_t)*2, |
c319b4d7 VK |
603 | .mode = 0644, |
604 | .proc_handler = ipv4_ping_group_range, | |
605 | }, | |
5d134f1c HFS |
606 | { |
607 | .procname = "tcp_ecn", | |
608 | .data = &init_net.ipv4.sysctl_tcp_ecn, | |
609 | .maxlen = sizeof(int), | |
610 | .mode = 0644, | |
611 | .proc_handler = proc_dointvec | |
612 | }, | |
49213555 DB |
613 | { |
614 | .procname = "tcp_ecn_fallback", | |
615 | .data = &init_net.ipv4.sysctl_tcp_ecn_fallback, | |
616 | .maxlen = sizeof(int), | |
617 | .mode = 0644, | |
618 | .proc_handler = proc_dointvec | |
619 | }, | |
287b7f38 NB |
620 | { |
621 | .procname = "ip_dynaddr", | |
622 | .data = &init_net.ipv4.sysctl_ip_dynaddr, | |
623 | .maxlen = sizeof(int), | |
624 | .mode = 0644, | |
625 | .proc_handler = proc_dointvec | |
626 | }, | |
e21145a9 NB |
627 | { |
628 | .procname = "ip_early_demux", | |
629 | .data = &init_net.ipv4.sysctl_ip_early_demux, | |
630 | .maxlen = sizeof(int), | |
631 | .mode = 0644, | |
632 | .proc_handler = proc_dointvec | |
633 | }, | |
dddb64bc SAK |
634 | { |
635 | .procname = "udp_early_demux", | |
636 | .data = &init_net.ipv4.sysctl_udp_early_demux, | |
637 | .maxlen = sizeof(int), | |
638 | .mode = 0644, | |
639 | .proc_handler = proc_udp_early_demux | |
640 | }, | |
641 | { | |
642 | .procname = "tcp_early_demux", | |
643 | .data = &init_net.ipv4.sysctl_tcp_early_demux, | |
644 | .maxlen = sizeof(int), | |
645 | .mode = 0644, | |
646 | .proc_handler = proc_tcp_early_demux | |
647 | }, | |
fa50d974 NB |
648 | { |
649 | .procname = "ip_default_ttl", | |
650 | .data = &init_net.ipv4.sysctl_ip_default_ttl, | |
651 | .maxlen = sizeof(int), | |
652 | .mode = 0644, | |
653 | .proc_handler = proc_dointvec_minmax, | |
654 | .extra1 = &ip_ttl_min, | |
655 | .extra2 = &ip_ttl_max, | |
656 | }, | |
0bbf87d8 EB |
657 | { |
658 | .procname = "ip_local_port_range", | |
c9d8f1a6 CW |
659 | .maxlen = sizeof(init_net.ipv4.ip_local_ports.range), |
660 | .data = &init_net.ipv4.ip_local_ports.range, | |
0bbf87d8 EB |
661 | .mode = 0644, |
662 | .proc_handler = ipv4_local_port_range, | |
663 | }, | |
122ff243 WC |
664 | { |
665 | .procname = "ip_local_reserved_ports", | |
666 | .data = &init_net.ipv4.sysctl_local_reserved_ports, | |
667 | .maxlen = 65536, | |
668 | .mode = 0644, | |
669 | .proc_handler = proc_do_large_bitmap, | |
670 | }, | |
974eda11 HFS |
671 | { |
672 | .procname = "ip_no_pmtu_disc", | |
673 | .data = &init_net.ipv4.sysctl_ip_no_pmtu_disc, | |
674 | .maxlen = sizeof(int), | |
675 | .mode = 0644, | |
676 | .proc_handler = proc_dointvec | |
677 | }, | |
f87c10a8 HFS |
678 | { |
679 | .procname = "ip_forward_use_pmtu", | |
680 | .data = &init_net.ipv4.sysctl_ip_fwd_use_pmtu, | |
681 | .maxlen = sizeof(int), | |
682 | .mode = 0644, | |
683 | .proc_handler = proc_dointvec, | |
684 | }, | |
49a60158 VB |
685 | { |
686 | .procname = "ip_nonlocal_bind", | |
687 | .data = &init_net.ipv4.sysctl_ip_nonlocal_bind, | |
688 | .maxlen = sizeof(int), | |
689 | .mode = 0644, | |
690 | .proc_handler = proc_dointvec | |
691 | }, | |
e110861f LC |
692 | { |
693 | .procname = "fwmark_reflect", | |
694 | .data = &init_net.ipv4.sysctl_fwmark_reflect, | |
695 | .maxlen = sizeof(int), | |
696 | .mode = 0644, | |
697 | .proc_handler = proc_dointvec, | |
698 | }, | |
84f39b08 LC |
699 | { |
700 | .procname = "tcp_fwmark_accept", | |
701 | .data = &init_net.ipv4.sysctl_tcp_fwmark_accept, | |
702 | .maxlen = sizeof(int), | |
703 | .mode = 0644, | |
704 | .proc_handler = proc_dointvec, | |
705 | }, | |
6dd9a14e DA |
706 | #ifdef CONFIG_NET_L3_MASTER_DEV |
707 | { | |
708 | .procname = "tcp_l3mdev_accept", | |
709 | .data = &init_net.ipv4.sysctl_tcp_l3mdev_accept, | |
710 | .maxlen = sizeof(int), | |
711 | .mode = 0644, | |
712 | .proc_handler = proc_dointvec_minmax, | |
713 | .extra1 = &zero, | |
714 | .extra2 = &one, | |
715 | }, | |
716 | #endif | |
b0f9ca53 FD |
717 | { |
718 | .procname = "tcp_mtu_probing", | |
719 | .data = &init_net.ipv4.sysctl_tcp_mtu_probing, | |
720 | .maxlen = sizeof(int), | |
721 | .mode = 0644, | |
722 | .proc_handler = proc_dointvec, | |
723 | }, | |
724 | { | |
725 | .procname = "tcp_base_mss", | |
726 | .data = &init_net.ipv4.sysctl_tcp_base_mss, | |
727 | .maxlen = sizeof(int), | |
728 | .mode = 0644, | |
729 | .proc_handler = proc_dointvec, | |
730 | }, | |
be208663 ED |
731 | { |
732 | .procname = "tcp_min_snd_mss", | |
733 | .data = &init_net.ipv4.sysctl_tcp_min_snd_mss, | |
734 | .maxlen = sizeof(int), | |
735 | .mode = 0644, | |
736 | .proc_handler = proc_dointvec_minmax, | |
737 | .extra1 = &tcp_min_snd_mss_min, | |
738 | .extra2 = &tcp_min_snd_mss_max, | |
739 | }, | |
6b58e0a5 FD |
740 | { |
741 | .procname = "tcp_probe_threshold", | |
742 | .data = &init_net.ipv4.sysctl_tcp_probe_threshold, | |
743 | .maxlen = sizeof(int), | |
744 | .mode = 0644, | |
745 | .proc_handler = proc_dointvec, | |
746 | }, | |
05cbc0db FD |
747 | { |
748 | .procname = "tcp_probe_interval", | |
749 | .data = &init_net.ipv4.sysctl_tcp_probe_interval, | |
750 | .maxlen = sizeof(int), | |
751 | .mode = 0644, | |
752 | .proc_handler = proc_dointvec, | |
753 | }, | |
df2cf4a7 PD |
754 | { |
755 | .procname = "igmp_link_local_mcast_reports", | |
87a8a2ae | 756 | .data = &init_net.ipv4.sysctl_igmp_llm_reports, |
df2cf4a7 PD |
757 | .maxlen = sizeof(int), |
758 | .mode = 0644, | |
759 | .proc_handler = proc_dointvec | |
760 | }, | |
815c5270 NB |
761 | { |
762 | .procname = "igmp_max_memberships", | |
763 | .data = &init_net.ipv4.sysctl_igmp_max_memberships, | |
764 | .maxlen = sizeof(int), | |
765 | .mode = 0644, | |
766 | .proc_handler = proc_dointvec | |
767 | }, | |
166b6b2d NB |
768 | { |
769 | .procname = "igmp_max_msf", | |
770 | .data = &init_net.ipv4.sysctl_igmp_max_msf, | |
771 | .maxlen = sizeof(int), | |
772 | .mode = 0644, | |
773 | .proc_handler = proc_dointvec | |
774 | }, | |
165094af NB |
775 | #ifdef CONFIG_IP_MULTICAST |
776 | { | |
777 | .procname = "igmp_qrv", | |
778 | .data = &init_net.ipv4.sysctl_igmp_qrv, | |
779 | .maxlen = sizeof(int), | |
780 | .mode = 0644, | |
781 | .proc_handler = proc_dointvec_minmax, | |
782 | .extra1 = &one | |
783 | }, | |
784 | #endif | |
6670e152 SH |
785 | { |
786 | .procname = "tcp_congestion_control", | |
787 | .data = &init_net.ipv4.tcp_congestion_control, | |
788 | .mode = 0644, | |
789 | .maxlen = TCP_CA_NAME_MAX, | |
790 | .proc_handler = proc_tcp_congestion_control, | |
791 | }, | |
13b287e8 NB |
792 | { |
793 | .procname = "tcp_keepalive_time", | |
794 | .data = &init_net.ipv4.sysctl_tcp_keepalive_time, | |
795 | .maxlen = sizeof(int), | |
796 | .mode = 0644, | |
797 | .proc_handler = proc_dointvec_jiffies, | |
798 | }, | |
9bd6861b NB |
799 | { |
800 | .procname = "tcp_keepalive_probes", | |
801 | .data = &init_net.ipv4.sysctl_tcp_keepalive_probes, | |
802 | .maxlen = sizeof(int), | |
803 | .mode = 0644, | |
804 | .proc_handler = proc_dointvec | |
805 | }, | |
b840d15d NB |
806 | { |
807 | .procname = "tcp_keepalive_intvl", | |
808 | .data = &init_net.ipv4.sysctl_tcp_keepalive_intvl, | |
809 | .maxlen = sizeof(int), | |
810 | .mode = 0644, | |
811 | .proc_handler = proc_dointvec_jiffies, | |
812 | }, | |
6fa25166 NB |
813 | { |
814 | .procname = "tcp_syn_retries", | |
815 | .data = &init_net.ipv4.sysctl_tcp_syn_retries, | |
816 | .maxlen = sizeof(int), | |
817 | .mode = 0644, | |
818 | .proc_handler = proc_dointvec_minmax, | |
819 | .extra1 = &tcp_syn_retries_min, | |
820 | .extra2 = &tcp_syn_retries_max | |
821 | }, | |
7c083ecb NB |
822 | { |
823 | .procname = "tcp_synack_retries", | |
824 | .data = &init_net.ipv4.sysctl_tcp_synack_retries, | |
825 | .maxlen = sizeof(int), | |
826 | .mode = 0644, | |
827 | .proc_handler = proc_dointvec | |
828 | }, | |
12ed8244 NB |
829 | #ifdef CONFIG_SYN_COOKIES |
830 | { | |
831 | .procname = "tcp_syncookies", | |
832 | .data = &init_net.ipv4.sysctl_tcp_syncookies, | |
833 | .maxlen = sizeof(int), | |
834 | .mode = 0644, | |
835 | .proc_handler = proc_dointvec | |
836 | }, | |
837 | #endif | |
1043e25f NB |
838 | { |
839 | .procname = "tcp_reordering", | |
840 | .data = &init_net.ipv4.sysctl_tcp_reordering, | |
841 | .maxlen = sizeof(int), | |
842 | .mode = 0644, | |
843 | .proc_handler = proc_dointvec | |
844 | }, | |
ae5c3f40 NB |
845 | { |
846 | .procname = "tcp_retries1", | |
847 | .data = &init_net.ipv4.sysctl_tcp_retries1, | |
848 | .maxlen = sizeof(int), | |
849 | .mode = 0644, | |
850 | .proc_handler = proc_dointvec_minmax, | |
851 | .extra2 = &tcp_retr1_max | |
852 | }, | |
c6214a97 NB |
853 | { |
854 | .procname = "tcp_retries2", | |
855 | .data = &init_net.ipv4.sysctl_tcp_retries2, | |
856 | .maxlen = sizeof(int), | |
857 | .mode = 0644, | |
858 | .proc_handler = proc_dointvec | |
859 | }, | |
c402d9be NB |
860 | { |
861 | .procname = "tcp_orphan_retries", | |
862 | .data = &init_net.ipv4.sysctl_tcp_orphan_retries, | |
863 | .maxlen = sizeof(int), | |
864 | .mode = 0644, | |
865 | .proc_handler = proc_dointvec | |
866 | }, | |
1e579caa NB |
867 | { |
868 | .procname = "tcp_fin_timeout", | |
869 | .data = &init_net.ipv4.sysctl_tcp_fin_timeout, | |
870 | .maxlen = sizeof(int), | |
871 | .mode = 0644, | |
872 | .proc_handler = proc_dointvec_jiffies, | |
873 | }, | |
4979f2d9 NB |
874 | { |
875 | .procname = "tcp_notsent_lowat", | |
876 | .data = &init_net.ipv4.sysctl_tcp_notsent_lowat, | |
877 | .maxlen = sizeof(unsigned int), | |
878 | .mode = 0644, | |
b007f090 | 879 | .proc_handler = proc_douintvec, |
4979f2d9 | 880 | }, |
56ab6b93 HY |
881 | { |
882 | .procname = "tcp_tw_reuse", | |
883 | .data = &init_net.ipv4.sysctl_tcp_tw_reuse, | |
884 | .maxlen = sizeof(int), | |
885 | .mode = 0644, | |
886 | .proc_handler = proc_dointvec | |
887 | }, | |
1946e672 HY |
888 | { |
889 | .procname = "tcp_max_tw_buckets", | |
890 | .data = &init_net.ipv4.tcp_death_row.sysctl_max_tw_buckets, | |
891 | .maxlen = sizeof(int), | |
892 | .mode = 0644, | |
893 | .proc_handler = proc_dointvec | |
894 | }, | |
fee83d09 HY |
895 | { |
896 | .procname = "tcp_max_syn_backlog", | |
897 | .data = &init_net.ipv4.sysctl_max_syn_backlog, | |
898 | .maxlen = sizeof(int), | |
899 | .mode = 0644, | |
900 | .proc_handler = proc_dointvec | |
901 | }, | |
e1cfcbe8 HY |
902 | { |
903 | .procname = "tcp_fastopen", | |
904 | .data = &init_net.ipv4.sysctl_tcp_fastopen, | |
905 | .maxlen = sizeof(int), | |
906 | .mode = 0644, | |
907 | .proc_handler = proc_dointvec, | |
908 | }, | |
43713848 HY |
909 | { |
910 | .procname = "tcp_fastopen_key", | |
911 | .mode = 0600, | |
912 | .data = &init_net.ipv4.sysctl_tcp_fastopen, | |
913 | .maxlen = ((TCP_FASTOPEN_KEY_LENGTH * 2) + 10), | |
914 | .proc_handler = proc_tcp_fastopen_key, | |
915 | }, | |
3733be14 HY |
916 | { |
917 | .procname = "tcp_fastopen_blackhole_timeout_sec", | |
918 | .data = &init_net.ipv4.sysctl_tcp_fastopen_blackhole_timeout, | |
919 | .maxlen = sizeof(int), | |
920 | .mode = 0644, | |
921 | .proc_handler = proc_tfo_blackhole_detect_timeout, | |
922 | .extra1 = &zero, | |
923 | }, | |
a6db4494 DA |
924 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
925 | { | |
926 | .procname = "fib_multipath_use_neigh", | |
927 | .data = &init_net.ipv4.sysctl_fib_multipath_use_neigh, | |
928 | .maxlen = sizeof(int), | |
929 | .mode = 0644, | |
930 | .proc_handler = proc_dointvec_minmax, | |
bf4e0a3d NA |
931 | .extra1 = &zero, |
932 | .extra2 = &one, | |
933 | }, | |
934 | { | |
935 | .procname = "fib_multipath_hash_policy", | |
936 | .data = &init_net.ipv4.sysctl_fib_multipath_hash_policy, | |
937 | .maxlen = sizeof(int), | |
938 | .mode = 0644, | |
3ae6ec08 | 939 | .proc_handler = proc_fib_multipath_hash_policy, |
a6db4494 DA |
940 | .extra1 = &zero, |
941 | .extra2 = &one, | |
942 | }, | |
943 | #endif | |
4548b683 KJ |
944 | { |
945 | .procname = "ip_unprivileged_port_start", | |
946 | .maxlen = sizeof(int), | |
947 | .data = &init_net.ipv4.sysctl_ip_prot_sock, | |
948 | .mode = 0644, | |
949 | .proc_handler = ipv4_privileged_ports, | |
950 | }, | |
63a6fff3 RS |
951 | #ifdef CONFIG_NET_L3_MASTER_DEV |
952 | { | |
953 | .procname = "udp_l3mdev_accept", | |
954 | .data = &init_net.ipv4.sysctl_udp_l3mdev_accept, | |
955 | .maxlen = sizeof(int), | |
956 | .mode = 0644, | |
957 | .proc_handler = proc_dointvec_minmax, | |
958 | .extra1 = &zero, | |
959 | .extra2 = &one, | |
960 | }, | |
961 | #endif | |
f9301034 ED |
962 | { |
963 | .procname = "tcp_sack", | |
964 | .data = &init_net.ipv4.sysctl_tcp_sack, | |
965 | .maxlen = sizeof(int), | |
966 | .mode = 0644, | |
967 | .proc_handler = proc_dointvec | |
968 | }, | |
9bb37ef0 ED |
969 | { |
970 | .procname = "tcp_window_scaling", | |
971 | .data = &init_net.ipv4.sysctl_tcp_window_scaling, | |
972 | .maxlen = sizeof(int), | |
973 | .mode = 0644, | |
974 | .proc_handler = proc_dointvec | |
975 | }, | |
5d2ed052 ED |
976 | { |
977 | .procname = "tcp_timestamps", | |
978 | .data = &init_net.ipv4.sysctl_tcp_timestamps, | |
979 | .maxlen = sizeof(int), | |
980 | .mode = 0644, | |
981 | .proc_handler = proc_dointvec | |
982 | }, | |
2ae21cf5 ED |
983 | { |
984 | .procname = "tcp_early_retrans", | |
985 | .data = &init_net.ipv4.sysctl_tcp_early_retrans, | |
986 | .maxlen = sizeof(int), | |
987 | .mode = 0644, | |
988 | .proc_handler = proc_dointvec_minmax, | |
989 | .extra1 = &zero, | |
990 | .extra2 = &four, | |
991 | }, | |
e20223f1 ED |
992 | { |
993 | .procname = "tcp_recovery", | |
994 | .data = &init_net.ipv4.sysctl_tcp_recovery, | |
995 | .maxlen = sizeof(int), | |
996 | .mode = 0644, | |
997 | .proc_handler = proc_dointvec, | |
998 | }, | |
2c04ac8a ED |
999 | { |
1000 | .procname = "tcp_thin_linear_timeouts", | |
1001 | .data = &init_net.ipv4.sysctl_tcp_thin_linear_timeouts, | |
1002 | .maxlen = sizeof(int), | |
1003 | .mode = 0644, | |
1004 | .proc_handler = proc_dointvec | |
1005 | }, | |
b510f0d2 ED |
1006 | { |
1007 | .procname = "tcp_slow_start_after_idle", | |
1008 | .data = &init_net.ipv4.sysctl_tcp_slow_start_after_idle, | |
1009 | .maxlen = sizeof(int), | |
1010 | .mode = 0644, | |
1011 | .proc_handler = proc_dointvec | |
1012 | }, | |
e0a1e5b5 ED |
1013 | { |
1014 | .procname = "tcp_retrans_collapse", | |
1015 | .data = &init_net.ipv4.sysctl_tcp_retrans_collapse, | |
1016 | .maxlen = sizeof(int), | |
1017 | .mode = 0644, | |
1018 | .proc_handler = proc_dointvec | |
1019 | }, | |
3f4c7c6f ED |
1020 | { |
1021 | .procname = "tcp_stdurg", | |
1022 | .data = &init_net.ipv4.sysctl_tcp_stdurg, | |
1023 | .maxlen = sizeof(int), | |
1024 | .mode = 0644, | |
1025 | .proc_handler = proc_dointvec | |
1026 | }, | |
625357aa ED |
1027 | { |
1028 | .procname = "tcp_rfc1337", | |
1029 | .data = &init_net.ipv4.sysctl_tcp_rfc1337, | |
1030 | .maxlen = sizeof(int), | |
1031 | .mode = 0644, | |
1032 | .proc_handler = proc_dointvec | |
1033 | }, | |
65c9410c ED |
1034 | { |
1035 | .procname = "tcp_abort_on_overflow", | |
1036 | .data = &init_net.ipv4.sysctl_tcp_abort_on_overflow, | |
1037 | .maxlen = sizeof(int), | |
1038 | .mode = 0644, | |
1039 | .proc_handler = proc_dointvec | |
1040 | }, | |
0bc65a28 ED |
1041 | { |
1042 | .procname = "tcp_fack", | |
1043 | .data = &init_net.ipv4.sysctl_tcp_fack, | |
1044 | .maxlen = sizeof(int), | |
1045 | .mode = 0644, | |
1046 | .proc_handler = proc_dointvec | |
1047 | }, | |
c6e21803 ED |
1048 | { |
1049 | .procname = "tcp_max_reordering", | |
1050 | .data = &init_net.ipv4.sysctl_tcp_max_reordering, | |
1051 | .maxlen = sizeof(int), | |
1052 | .mode = 0644, | |
1053 | .proc_handler = proc_dointvec | |
1054 | }, | |
6496f6bd ED |
1055 | { |
1056 | .procname = "tcp_dsack", | |
1057 | .data = &init_net.ipv4.sysctl_tcp_dsack, | |
1058 | .maxlen = sizeof(int), | |
1059 | .mode = 0644, | |
1060 | .proc_handler = proc_dointvec | |
1061 | }, | |
0c12654a ED |
1062 | { |
1063 | .procname = "tcp_app_win", | |
1064 | .data = &init_net.ipv4.sysctl_tcp_app_win, | |
1065 | .maxlen = sizeof(int), | |
1066 | .mode = 0644, | |
1067 | .proc_handler = proc_dointvec | |
1068 | }, | |
94f0893e ED |
1069 | { |
1070 | .procname = "tcp_adv_win_scale", | |
1071 | .data = &init_net.ipv4.sysctl_tcp_adv_win_scale, | |
1072 | .maxlen = sizeof(int), | |
1073 | .mode = 0644, | |
1074 | .proc_handler = proc_dointvec_minmax, | |
1075 | .extra1 = &tcp_adv_win_scale_min, | |
1076 | .extra2 = &tcp_adv_win_scale_max, | |
1077 | }, | |
af9b69a7 ED |
1078 | { |
1079 | .procname = "tcp_frto", | |
1080 | .data = &init_net.ipv4.sysctl_tcp_frto, | |
1081 | .maxlen = sizeof(int), | |
1082 | .mode = 0644, | |
1083 | .proc_handler = proc_dointvec | |
1084 | }, | |
ec36e416 ED |
1085 | { |
1086 | .procname = "tcp_no_metrics_save", | |
1087 | .data = &init_net.ipv4.sysctl_tcp_nometrics_save, | |
1088 | .maxlen = sizeof(int), | |
1089 | .mode = 0644, | |
1090 | .proc_handler = proc_dointvec, | |
1091 | }, | |
4540c0cf ED |
1092 | { |
1093 | .procname = "tcp_moderate_rcvbuf", | |
1094 | .data = &init_net.ipv4.sysctl_tcp_moderate_rcvbuf, | |
1095 | .maxlen = sizeof(int), | |
1096 | .mode = 0644, | |
1097 | .proc_handler = proc_dointvec, | |
1098 | }, | |
d06a9904 ED |
1099 | { |
1100 | .procname = "tcp_tso_win_divisor", | |
1101 | .data = &init_net.ipv4.sysctl_tcp_tso_win_divisor, | |
1102 | .maxlen = sizeof(int), | |
1103 | .mode = 0644, | |
1104 | .proc_handler = proc_dointvec, | |
1105 | }, | |
ceef9ab6 ED |
1106 | { |
1107 | .procname = "tcp_workaround_signed_windows", | |
1108 | .data = &init_net.ipv4.sysctl_tcp_workaround_signed_windows, | |
1109 | .maxlen = sizeof(int), | |
1110 | .mode = 0644, | |
1111 | .proc_handler = proc_dointvec | |
1112 | }, | |
9184d8bb ED |
1113 | { |
1114 | .procname = "tcp_limit_output_bytes", | |
1115 | .data = &init_net.ipv4.sysctl_tcp_limit_output_bytes, | |
1116 | .maxlen = sizeof(int), | |
1117 | .mode = 0644, | |
1118 | .proc_handler = proc_dointvec | |
1119 | }, | |
b530b681 ED |
1120 | { |
1121 | .procname = "tcp_challenge_ack_limit", | |
1122 | .data = &init_net.ipv4.sysctl_tcp_challenge_ack_limit, | |
1123 | .maxlen = sizeof(int), | |
1124 | .mode = 0644, | |
1125 | .proc_handler = proc_dointvec | |
1126 | }, | |
26e9596e ED |
1127 | { |
1128 | .procname = "tcp_min_tso_segs", | |
1129 | .data = &init_net.ipv4.sysctl_tcp_min_tso_segs, | |
1130 | .maxlen = sizeof(int), | |
1131 | .mode = 0644, | |
1132 | .proc_handler = proc_dointvec_minmax, | |
1133 | .extra1 = &one, | |
1134 | .extra2 = &gso_max_segs, | |
1135 | }, | |
bd239704 ED |
1136 | { |
1137 | .procname = "tcp_min_rtt_wlen", | |
1138 | .data = &init_net.ipv4.sysctl_tcp_min_rtt_wlen, | |
1139 | .maxlen = sizeof(int), | |
1140 | .mode = 0644, | |
1141 | .proc_handler = proc_dointvec | |
1142 | }, | |
790f00e1 ED |
1143 | { |
1144 | .procname = "tcp_autocorking", | |
1145 | .data = &init_net.ipv4.sysctl_tcp_autocorking, | |
1146 | .maxlen = sizeof(int), | |
1147 | .mode = 0644, | |
1148 | .proc_handler = proc_dointvec_minmax, | |
1149 | .extra1 = &zero, | |
1150 | .extra2 = &one, | |
1151 | }, | |
4170ba6b ED |
1152 | { |
1153 | .procname = "tcp_invalid_ratelimit", | |
1154 | .data = &init_net.ipv4.sysctl_tcp_invalid_ratelimit, | |
1155 | .maxlen = sizeof(int), | |
1156 | .mode = 0644, | |
1157 | .proc_handler = proc_dointvec_ms_jiffies, | |
1158 | }, | |
23a7102a ED |
1159 | { |
1160 | .procname = "tcp_pacing_ss_ratio", | |
1161 | .data = &init_net.ipv4.sysctl_tcp_pacing_ss_ratio, | |
1162 | .maxlen = sizeof(int), | |
1163 | .mode = 0644, | |
1164 | .proc_handler = proc_dointvec_minmax, | |
1165 | .extra1 = &zero, | |
1166 | .extra2 = &thousand, | |
1167 | }, | |
c26e91f8 ED |
1168 | { |
1169 | .procname = "tcp_pacing_ca_ratio", | |
1170 | .data = &init_net.ipv4.sysctl_tcp_pacing_ca_ratio, | |
1171 | .maxlen = sizeof(int), | |
1172 | .mode = 0644, | |
1173 | .proc_handler = proc_dointvec_minmax, | |
1174 | .extra1 = &zero, | |
1175 | .extra2 = &thousand, | |
1176 | }, | |
356d1833 ED |
1177 | { |
1178 | .procname = "tcp_wmem", | |
1179 | .data = &init_net.ipv4.sysctl_tcp_wmem, | |
1180 | .maxlen = sizeof(init_net.ipv4.sysctl_tcp_wmem), | |
1181 | .mode = 0644, | |
1182 | .proc_handler = proc_dointvec_minmax, | |
1183 | .extra1 = &one, | |
1184 | }, | |
1185 | { | |
1186 | .procname = "tcp_rmem", | |
1187 | .data = &init_net.ipv4.sysctl_tcp_rmem, | |
1188 | .maxlen = sizeof(init_net.ipv4.sysctl_tcp_rmem), | |
1189 | .mode = 0644, | |
1190 | .proc_handler = proc_dointvec_minmax, | |
1191 | .extra1 = &one, | |
1192 | }, | |
68528f09 PE |
1193 | { } |
1194 | }; | |
1195 | ||
1577519d PE |
1196 | static __net_init int ipv4_sysctl_init_net(struct net *net) |
1197 | { | |
68528f09 PE |
1198 | struct ctl_table *table; |
1199 | ||
1200 | table = ipv4_net_table; | |
09ad9bc7 | 1201 | if (!net_eq(net, &init_net)) { |
0a6fa23d EB |
1202 | int i; |
1203 | ||
68528f09 | 1204 | table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL); |
51456b29 | 1205 | if (!table) |
68528f09 PE |
1206 | goto err_alloc; |
1207 | ||
0a6fa23d EB |
1208 | /* Update the variables to point into the current struct net */ |
1209 | for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++) | |
1210 | table[i].data += (void *)net - (void *)&init_net; | |
68528f09 PE |
1211 | } |
1212 | ||
ec8f23ce | 1213 | net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table); |
51456b29 | 1214 | if (!net->ipv4.ipv4_hdr) |
68528f09 PE |
1215 | goto err_reg; |
1216 | ||
122ff243 WC |
1217 | net->ipv4.sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL); |
1218 | if (!net->ipv4.sysctl_local_reserved_ports) | |
1219 | goto err_ports; | |
1220 | ||
1577519d | 1221 | return 0; |
68528f09 | 1222 | |
122ff243 WC |
1223 | err_ports: |
1224 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
68528f09 | 1225 | err_reg: |
09ad9bc7 | 1226 | if (!net_eq(net, &init_net)) |
68528f09 PE |
1227 | kfree(table); |
1228 | err_alloc: | |
1229 | return -ENOMEM; | |
1577519d PE |
1230 | } |
1231 | ||
1232 | static __net_exit void ipv4_sysctl_exit_net(struct net *net) | |
1233 | { | |
68528f09 PE |
1234 | struct ctl_table *table; |
1235 | ||
122ff243 | 1236 | kfree(net->ipv4.sysctl_local_reserved_ports); |
68528f09 PE |
1237 | table = net->ipv4.ipv4_hdr->ctl_table_arg; |
1238 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
1239 | kfree(table); | |
1577519d PE |
1240 | } |
1241 | ||
1242 | static __net_initdata struct pernet_operations ipv4_sysctl_ops = { | |
1243 | .init = ipv4_sysctl_init_net, | |
1244 | .exit = ipv4_sysctl_exit_net, | |
1245 | }; | |
1246 | ||
3e37c3f9 PE |
1247 | static __init int sysctl_ipv4_init(void) |
1248 | { | |
1249 | struct ctl_table_header *hdr; | |
1250 | ||
ec8f23ce | 1251 | hdr = register_net_sysctl(&init_net, "net/ipv4", ipv4_table); |
51456b29 | 1252 | if (!hdr) |
1577519d PE |
1253 | return -ENOMEM; |
1254 | ||
1255 | if (register_pernet_subsys(&ipv4_sysctl_ops)) { | |
5dd3df10 | 1256 | unregister_net_sysctl_table(hdr); |
1577519d PE |
1257 | return -ENOMEM; |
1258 | } | |
1259 | ||
1260 | return 0; | |
3e37c3f9 PE |
1261 | } |
1262 | ||
1263 | __initcall(sysctl_ipv4_init); |