]>
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 | 21 | #include <net/ip.h> |
ce5c9c20 | 22 | #include <net/ip_fib.h> |
1da177e4 LT |
23 | #include <net/route.h> |
24 | #include <net/tcp.h> | |
95766fff | 25 | #include <net/udp.h> |
446fda4f | 26 | #include <net/cipso_ipv4.h> |
04128f23 | 27 | #include <net/inet_frag.h> |
c319b4d7 | 28 | #include <net/ping.h> |
dddb64bc | 29 | #include <net/protocol.h> |
3ae6ec08 | 30 | #include <net/netevent.h> |
1da177e4 | 31 | |
79e9fed4 | 32 | static int two = 2; |
4253b498 | 33 | static int three __maybe_unused = 3; |
6ba8a3b1 | 34 | static int four = 4; |
43e122b0 | 35 | static int thousand = 1000; |
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; | |
5f3e2bf0 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 }; | |
d4ce5808 | 51 | static u32 u32_max_div_HZ = UINT_MAX / HZ; |
19fad20d | 52 | static int one_day_secs = 24 * 3600; |
ce5c9c20 IS |
53 | static u32 fib_multipath_hash_fields_all_mask __maybe_unused = |
54 | FIB_MULTIPATH_HASH_FIELD_ALL_MASK; | |
1da177e4 | 55 | |
b6690b14 FW |
56 | /* obsolete */ |
57 | static int sysctl_tcp_low_latency __read_mostly; | |
58 | ||
227b60f5 | 59 | /* Update system visible IP port range */ |
0bbf87d8 | 60 | static void set_local_port_range(struct net *net, int range[2]) |
227b60f5 | 61 | { |
ed2dfd90 ED |
62 | bool same_parity = !((range[0] ^ range[1]) & 1); |
63 | ||
4ee3bd4a | 64 | write_seqlock_bh(&net->ipv4.ip_local_ports.lock); |
ed2dfd90 ED |
65 | if (same_parity && !net->ipv4.ip_local_ports.warned) { |
66 | net->ipv4.ip_local_ports.warned = true; | |
67 | pr_err_ratelimited("ip_local_port_range: prefer different parity for start/end values.\n"); | |
68 | } | |
c9d8f1a6 CW |
69 | net->ipv4.ip_local_ports.range[0] = range[0]; |
70 | net->ipv4.ip_local_ports.range[1] = range[1]; | |
4ee3bd4a | 71 | write_sequnlock_bh(&net->ipv4.ip_local_ports.lock); |
227b60f5 SH |
72 | } |
73 | ||
74 | /* Validate changes from /proc interface. */ | |
fe2c6338 | 75 | static int ipv4_local_port_range(struct ctl_table *table, int write, |
32927393 | 76 | void *buffer, size_t *lenp, loff_t *ppos) |
227b60f5 | 77 | { |
0bbf87d8 | 78 | struct net *net = |
c9d8f1a6 | 79 | container_of(table->data, struct net, ipv4.ip_local_ports.range); |
227b60f5 | 80 | int ret; |
3c689b73 | 81 | int range[2]; |
fe2c6338 | 82 | struct ctl_table tmp = { |
227b60f5 SH |
83 | .data = &range, |
84 | .maxlen = sizeof(range), | |
85 | .mode = table->mode, | |
86 | .extra1 = &ip_local_port_range_min, | |
87 | .extra2 = &ip_local_port_range_max, | |
88 | }; | |
89 | ||
0bbf87d8 EB |
90 | inet_get_local_port_range(net, &range[0], &range[1]); |
91 | ||
8d65af78 | 92 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
227b60f5 SH |
93 | |
94 | if (write && ret == 0) { | |
4548b683 KJ |
95 | /* Ensure that the upper limit is not smaller than the lower, |
96 | * and that the lower does not encroach upon the privileged | |
97 | * port limit. | |
98 | */ | |
99 | if ((range[1] < range[0]) || | |
100 | (range[0] < net->ipv4.sysctl_ip_prot_sock)) | |
227b60f5 SH |
101 | ret = -EINVAL; |
102 | else | |
0bbf87d8 | 103 | set_local_port_range(net, range); |
227b60f5 SH |
104 | } |
105 | ||
106 | return ret; | |
107 | } | |
108 | ||
4548b683 KJ |
109 | /* Validate changes from /proc interface. */ |
110 | static int ipv4_privileged_ports(struct ctl_table *table, int write, | |
32927393 | 111 | void *buffer, size_t *lenp, loff_t *ppos) |
4548b683 KJ |
112 | { |
113 | struct net *net = container_of(table->data, struct net, | |
114 | ipv4.sysctl_ip_prot_sock); | |
115 | int ret; | |
116 | int pports; | |
117 | int range[2]; | |
118 | struct ctl_table tmp = { | |
119 | .data = &pports, | |
120 | .maxlen = sizeof(pports), | |
121 | .mode = table->mode, | |
122 | .extra1 = &ip_privileged_port_min, | |
123 | .extra2 = &ip_privileged_port_max, | |
124 | }; | |
125 | ||
126 | pports = net->ipv4.sysctl_ip_prot_sock; | |
127 | ||
128 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); | |
129 | ||
130 | if (write && ret == 0) { | |
131 | inet_get_local_port_range(net, &range[0], &range[1]); | |
132 | /* Ensure that the local port range doesn't overlap with the | |
133 | * privileged port range. | |
134 | */ | |
135 | if (range[0] < pports) | |
136 | ret = -EINVAL; | |
137 | else | |
138 | net->ipv4.sysctl_ip_prot_sock = pports; | |
139 | } | |
140 | ||
141 | return ret; | |
142 | } | |
c319b4d7 | 143 | |
7064d16e | 144 | static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high) |
c319b4d7 | 145 | { |
7064d16e | 146 | kgid_t *data = table->data; |
0bbf87d8 | 147 | struct net *net = |
ba6b918a | 148 | container_of(table->data, struct net, ipv4.ping_group_range.range); |
95c96174 | 149 | unsigned int seq; |
c319b4d7 | 150 | do { |
396a30cc | 151 | seq = read_seqbegin(&net->ipv4.ping_group_range.lock); |
c319b4d7 VK |
152 | |
153 | *low = data[0]; | |
154 | *high = data[1]; | |
396a30cc | 155 | } while (read_seqretry(&net->ipv4.ping_group_range.lock, seq)); |
c319b4d7 VK |
156 | } |
157 | ||
158 | /* Update system visible IP port range */ | |
7064d16e | 159 | static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high) |
c319b4d7 | 160 | { |
7064d16e | 161 | kgid_t *data = table->data; |
0bbf87d8 | 162 | struct net *net = |
ba6b918a | 163 | container_of(table->data, struct net, ipv4.ping_group_range.range); |
396a30cc | 164 | write_seqlock(&net->ipv4.ping_group_range.lock); |
7064d16e EB |
165 | data[0] = low; |
166 | data[1] = high; | |
396a30cc | 167 | write_sequnlock(&net->ipv4.ping_group_range.lock); |
c319b4d7 VK |
168 | } |
169 | ||
170 | /* Validate changes from /proc interface. */ | |
fe2c6338 | 171 | static int ipv4_ping_group_range(struct ctl_table *table, int write, |
32927393 | 172 | void *buffer, size_t *lenp, loff_t *ppos) |
c319b4d7 | 173 | { |
7064d16e | 174 | struct user_namespace *user_ns = current_user_ns(); |
c319b4d7 | 175 | int ret; |
7064d16e EB |
176 | gid_t urange[2]; |
177 | kgid_t low, high; | |
fe2c6338 | 178 | struct ctl_table tmp = { |
7064d16e EB |
179 | .data = &urange, |
180 | .maxlen = sizeof(urange), | |
c319b4d7 VK |
181 | .mode = table->mode, |
182 | .extra1 = &ip_ping_group_range_min, | |
183 | .extra2 = &ip_ping_group_range_max, | |
184 | }; | |
185 | ||
7064d16e EB |
186 | inet_get_ping_group_range_table(table, &low, &high); |
187 | urange[0] = from_kgid_munged(user_ns, low); | |
188 | urange[1] = from_kgid_munged(user_ns, high); | |
c319b4d7 VK |
189 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
190 | ||
7064d16e EB |
191 | if (write && ret == 0) { |
192 | low = make_kgid(user_ns, urange[0]); | |
193 | high = make_kgid(user_ns, urange[1]); | |
70ba5b6d TH |
194 | if (!gid_valid(low) || !gid_valid(high)) |
195 | return -EINVAL; | |
196 | if (urange[1] < urange[0] || gid_lt(high, low)) { | |
7064d16e EB |
197 | low = make_kgid(&init_user_ns, 1); |
198 | high = make_kgid(&init_user_ns, 0); | |
199 | } | |
200 | set_ping_group_range(table, low, high); | |
201 | } | |
c319b4d7 VK |
202 | |
203 | return ret; | |
204 | } | |
205 | ||
d18c5d19 | 206 | static int ipv4_fwd_update_priority(struct ctl_table *table, int write, |
32927393 | 207 | void *buffer, size_t *lenp, loff_t *ppos) |
d18c5d19 PM |
208 | { |
209 | struct net *net; | |
210 | int ret; | |
211 | ||
212 | net = container_of(table->data, struct net, | |
213 | ipv4.sysctl_ip_fwd_update_priority); | |
1c69dedc | 214 | ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
d18c5d19 PM |
215 | if (write && ret == 0) |
216 | call_netevent_notifiers(NETEVENT_IPV4_FWD_UPDATE_PRIORITY_UPDATE, | |
217 | net); | |
218 | ||
219 | return ret; | |
220 | } | |
221 | ||
fe2c6338 | 222 | static int proc_tcp_congestion_control(struct ctl_table *ctl, int write, |
32927393 | 223 | void *buffer, size_t *lenp, loff_t *ppos) |
317a76f9 | 224 | { |
6670e152 SH |
225 | struct net *net = container_of(ctl->data, struct net, |
226 | ipv4.tcp_congestion_control); | |
317a76f9 | 227 | char val[TCP_CA_NAME_MAX]; |
fe2c6338 | 228 | struct ctl_table tbl = { |
317a76f9 SH |
229 | .data = val, |
230 | .maxlen = TCP_CA_NAME_MAX, | |
231 | }; | |
232 | int ret; | |
233 | ||
6670e152 | 234 | tcp_get_default_congestion_control(net, val); |
317a76f9 | 235 | |
8d65af78 | 236 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
317a76f9 | 237 | if (write && ret == 0) |
6670e152 | 238 | ret = tcp_set_default_congestion_control(net, val); |
317a76f9 SH |
239 | return ret; |
240 | } | |
241 | ||
fe2c6338 | 242 | static int proc_tcp_available_congestion_control(struct ctl_table *ctl, |
32927393 CH |
243 | int write, void *buffer, |
244 | size_t *lenp, loff_t *ppos) | |
3ff825b2 | 245 | { |
fe2c6338 | 246 | struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; |
3ff825b2 SH |
247 | int ret; |
248 | ||
249 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
250 | if (!tbl.data) | |
251 | return -ENOMEM; | |
252 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); | |
8d65af78 | 253 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
3ff825b2 SH |
254 | kfree(tbl.data); |
255 | return ret; | |
256 | } | |
257 | ||
fe2c6338 | 258 | static int proc_allowed_congestion_control(struct ctl_table *ctl, |
32927393 CH |
259 | int write, void *buffer, |
260 | size_t *lenp, loff_t *ppos) | |
ce7bc3bf | 261 | { |
fe2c6338 | 262 | struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; |
ce7bc3bf SH |
263 | int ret; |
264 | ||
265 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
266 | if (!tbl.data) | |
267 | return -ENOMEM; | |
268 | ||
269 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); | |
8d65af78 | 270 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
ce7bc3bf SH |
271 | if (write && ret == 0) |
272 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
273 | kfree(tbl.data); | |
274 | return ret; | |
275 | } | |
276 | ||
aa1236cd JB |
277 | static int sscanf_key(char *buf, __le32 *key) |
278 | { | |
279 | u32 user_key[4]; | |
280 | int i, ret = 0; | |
281 | ||
282 | if (sscanf(buf, "%x-%x-%x-%x", user_key, user_key + 1, | |
283 | user_key + 2, user_key + 3) != 4) { | |
284 | ret = -EINVAL; | |
285 | } else { | |
286 | for (i = 0; i < ARRAY_SIZE(user_key); i++) | |
287 | key[i] = cpu_to_le32(user_key[i]); | |
288 | } | |
289 | pr_debug("proc TFO key set 0x%x-%x-%x-%x <- 0x%s: %u\n", | |
290 | user_key[0], user_key[1], user_key[2], user_key[3], buf, ret); | |
291 | ||
292 | return ret; | |
293 | } | |
294 | ||
43713848 | 295 | static int proc_tcp_fastopen_key(struct ctl_table *table, int write, |
32927393 | 296 | void *buffer, size_t *lenp, loff_t *ppos) |
10467163 | 297 | { |
43713848 HY |
298 | struct net *net = container_of(table->data, struct net, |
299 | ipv4.sysctl_tcp_fastopen); | |
aa1236cd JB |
300 | /* maxlen to print the list of keys in hex (*2), with dashes |
301 | * separating doublewords and a comma in between keys. | |
302 | */ | |
303 | struct ctl_table tbl = { .maxlen = ((TCP_FASTOPEN_KEY_LENGTH * | |
304 | 2 * TCP_FASTOPEN_KEY_MAX) + | |
305 | (TCP_FASTOPEN_KEY_MAX * 5)) }; | |
f19008e6 JB |
306 | u32 user_key[TCP_FASTOPEN_KEY_BUF_LENGTH / sizeof(u32)]; |
307 | __le32 key[TCP_FASTOPEN_KEY_BUF_LENGTH / sizeof(__le32)]; | |
aa1236cd | 308 | char *backup_data; |
f19008e6 | 309 | int ret, i = 0, off = 0, n_keys; |
10467163 JC |
310 | |
311 | tbl.data = kmalloc(tbl.maxlen, GFP_KERNEL); | |
312 | if (!tbl.data) | |
313 | return -ENOMEM; | |
314 | ||
f19008e6 | 315 | n_keys = tcp_fastopen_get_cipher(net, NULL, (u64 *)key); |
aa1236cd JB |
316 | if (!n_keys) { |
317 | memset(&key[0], 0, TCP_FASTOPEN_KEY_LENGTH); | |
318 | n_keys = 1; | |
319 | } | |
320 | ||
321 | for (i = 0; i < n_keys * 4; i++) | |
c860e997 YC |
322 | user_key[i] = le32_to_cpu(key[i]); |
323 | ||
aa1236cd JB |
324 | for (i = 0; i < n_keys; i++) { |
325 | off += snprintf(tbl.data + off, tbl.maxlen - off, | |
326 | "%08x-%08x-%08x-%08x", | |
327 | user_key[i * 4], | |
328 | user_key[i * 4 + 1], | |
329 | user_key[i * 4 + 2], | |
330 | user_key[i * 4 + 3]); | |
9bb59a21 HL |
331 | |
332 | if (WARN_ON_ONCE(off >= tbl.maxlen - 1)) | |
333 | break; | |
334 | ||
aa1236cd JB |
335 | if (i + 1 < n_keys) |
336 | off += snprintf(tbl.data + off, tbl.maxlen - off, ","); | |
337 | } | |
338 | ||
10467163 JC |
339 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
340 | ||
341 | if (write && ret == 0) { | |
aa1236cd JB |
342 | backup_data = strchr(tbl.data, ','); |
343 | if (backup_data) { | |
344 | *backup_data = '\0'; | |
345 | backup_data++; | |
346 | } | |
347 | if (sscanf_key(tbl.data, key)) { | |
10467163 JC |
348 | ret = -EINVAL; |
349 | goto bad_key; | |
350 | } | |
aa1236cd JB |
351 | if (backup_data) { |
352 | if (sscanf_key(backup_data, key + 4)) { | |
353 | ret = -EINVAL; | |
354 | goto bad_key; | |
355 | } | |
356 | } | |
357 | tcp_fastopen_reset_cipher(net, NULL, key, | |
438ac880 | 358 | backup_data ? key + 4 : NULL); |
10467163 JC |
359 | } |
360 | ||
361 | bad_key: | |
10467163 JC |
362 | kfree(tbl.data); |
363 | return ret; | |
364 | } | |
365 | ||
dddb64bc SAK |
366 | static void proc_configure_early_demux(int enabled, int protocol) |
367 | { | |
368 | struct net_protocol *ipprot; | |
369 | #if IS_ENABLED(CONFIG_IPV6) | |
370 | struct inet6_protocol *ip6prot; | |
371 | #endif | |
372 | ||
58c4c6a3 DA |
373 | rcu_read_lock(); |
374 | ||
dddb64bc SAK |
375 | ipprot = rcu_dereference(inet_protos[protocol]); |
376 | if (ipprot) | |
377 | ipprot->early_demux = enabled ? ipprot->early_demux_handler : | |
378 | NULL; | |
379 | ||
380 | #if IS_ENABLED(CONFIG_IPV6) | |
381 | ip6prot = rcu_dereference(inet6_protos[protocol]); | |
382 | if (ip6prot) | |
383 | ip6prot->early_demux = enabled ? ip6prot->early_demux_handler : | |
384 | NULL; | |
385 | #endif | |
58c4c6a3 | 386 | rcu_read_unlock(); |
dddb64bc SAK |
387 | } |
388 | ||
389 | static int proc_tcp_early_demux(struct ctl_table *table, int write, | |
32927393 | 390 | void *buffer, size_t *lenp, loff_t *ppos) |
dddb64bc SAK |
391 | { |
392 | int ret = 0; | |
393 | ||
2932bcda | 394 | ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
dddb64bc SAK |
395 | |
396 | if (write && !ret) { | |
397 | int enabled = init_net.ipv4.sysctl_tcp_early_demux; | |
398 | ||
399 | proc_configure_early_demux(enabled, IPPROTO_TCP); | |
400 | } | |
401 | ||
402 | return ret; | |
403 | } | |
404 | ||
405 | static int proc_udp_early_demux(struct ctl_table *table, int write, | |
32927393 | 406 | void *buffer, size_t *lenp, loff_t *ppos) |
dddb64bc SAK |
407 | { |
408 | int ret = 0; | |
409 | ||
2932bcda | 410 | ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
dddb64bc SAK |
411 | |
412 | if (write && !ret) { | |
413 | int enabled = init_net.ipv4.sysctl_udp_early_demux; | |
414 | ||
415 | proc_configure_early_demux(enabled, IPPROTO_UDP); | |
416 | } | |
417 | ||
418 | return ret; | |
419 | } | |
420 | ||
cf1ef3f0 | 421 | static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table, |
32927393 | 422 | int write, void *buffer, |
cf1ef3f0 WW |
423 | size_t *lenp, loff_t *ppos) |
424 | { | |
3733be14 HY |
425 | struct net *net = container_of(table->data, struct net, |
426 | ipv4.sysctl_tcp_fastopen_blackhole_timeout); | |
cf1ef3f0 WW |
427 | int ret; |
428 | ||
429 | ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
430 | if (write && ret == 0) | |
3733be14 | 431 | atomic_set(&net->ipv4.tfo_active_disable_times, 0); |
734942cc DW |
432 | |
433 | return ret; | |
434 | } | |
435 | ||
436 | static int proc_tcp_available_ulp(struct ctl_table *ctl, | |
32927393 | 437 | int write, void *buffer, size_t *lenp, |
734942cc DW |
438 | loff_t *ppos) |
439 | { | |
440 | struct ctl_table tbl = { .maxlen = TCP_ULP_BUF_MAX, }; | |
441 | int ret; | |
442 | ||
443 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
444 | if (!tbl.data) | |
445 | return -ENOMEM; | |
446 | tcp_get_available_ulp(tbl.data, TCP_ULP_BUF_MAX); | |
447 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); | |
448 | kfree(tbl.data); | |
449 | ||
cf1ef3f0 WW |
450 | return ret; |
451 | } | |
452 | ||
3ae6ec08 IS |
453 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
454 | static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write, | |
32927393 | 455 | void *buffer, size_t *lenp, |
3ae6ec08 IS |
456 | loff_t *ppos) |
457 | { | |
458 | struct net *net = container_of(table->data, struct net, | |
459 | ipv4.sysctl_fib_multipath_hash_policy); | |
460 | int ret; | |
461 | ||
be205fe6 | 462 | ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
3ae6ec08 | 463 | if (write && ret == 0) |
3192dac6 | 464 | call_netevent_notifiers(NETEVENT_IPV4_MPATH_HASH_UPDATE, net); |
3ae6ec08 IS |
465 | |
466 | return ret; | |
467 | } | |
eb0e4d59 IS |
468 | |
469 | static int proc_fib_multipath_hash_fields(struct ctl_table *table, int write, | |
470 | void *buffer, size_t *lenp, | |
471 | loff_t *ppos) | |
472 | { | |
473 | struct net *net; | |
474 | int ret; | |
475 | ||
476 | net = container_of(table->data, struct net, | |
477 | ipv4.sysctl_fib_multipath_hash_fields); | |
478 | ret = proc_douintvec_minmax(table, write, buffer, lenp, ppos); | |
479 | if (write && ret == 0) | |
480 | call_netevent_notifiers(NETEVENT_IPV4_MPATH_HASH_UPDATE, net); | |
481 | ||
482 | return ret; | |
483 | } | |
3ae6ec08 IS |
484 | #endif |
485 | ||
3e37c3f9 | 486 | static struct ctl_table ipv4_table[] = { |
1da177e4 | 487 | { |
1da177e4 LT |
488 | .procname = "tcp_max_orphans", |
489 | .data = &sysctl_tcp_max_orphans, | |
490 | .maxlen = sizeof(int), | |
491 | .mode = 0644, | |
6d9f239a | 492 | .proc_handler = proc_dointvec |
1da177e4 | 493 | }, |
1da177e4 | 494 | { |
1da177e4 LT |
495 | .procname = "inet_peer_threshold", |
496 | .data = &inet_peer_threshold, | |
497 | .maxlen = sizeof(int), | |
498 | .mode = 0644, | |
6d9f239a | 499 | .proc_handler = proc_dointvec |
1da177e4 LT |
500 | }, |
501 | { | |
1da177e4 LT |
502 | .procname = "inet_peer_minttl", |
503 | .data = &inet_peer_minttl, | |
504 | .maxlen = sizeof(int), | |
505 | .mode = 0644, | |
6d9f239a | 506 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
507 | }, |
508 | { | |
1da177e4 LT |
509 | .procname = "inet_peer_maxttl", |
510 | .data = &inet_peer_maxttl, | |
511 | .maxlen = sizeof(int), | |
512 | .mode = 0644, | |
6d9f239a | 513 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 | 514 | }, |
a4fe34bf EB |
515 | { |
516 | .procname = "tcp_mem", | |
517 | .maxlen = sizeof(sysctl_tcp_mem), | |
518 | .data = &sysctl_tcp_mem, | |
519 | .mode = 0644, | |
520 | .proc_handler = proc_doulongvec_minmax, | |
521 | }, | |
1da177e4 | 522 | { |
1da177e4 LT |
523 | .procname = "tcp_low_latency", |
524 | .data = &sysctl_tcp_low_latency, | |
525 | .maxlen = sizeof(int), | |
526 | .mode = 0644, | |
6d9f239a | 527 | .proc_handler = proc_dointvec |
1da177e4 | 528 | }, |
446fda4f PM |
529 | #ifdef CONFIG_NETLABEL |
530 | { | |
446fda4f PM |
531 | .procname = "cipso_cache_enable", |
532 | .data = &cipso_v4_cache_enabled, | |
533 | .maxlen = sizeof(int), | |
534 | .mode = 0644, | |
6d9f239a | 535 | .proc_handler = proc_dointvec, |
446fda4f PM |
536 | }, |
537 | { | |
446fda4f PM |
538 | .procname = "cipso_cache_bucket_size", |
539 | .data = &cipso_v4_cache_bucketsize, | |
540 | .maxlen = sizeof(int), | |
541 | .mode = 0644, | |
6d9f239a | 542 | .proc_handler = proc_dointvec, |
446fda4f PM |
543 | }, |
544 | { | |
446fda4f PM |
545 | .procname = "cipso_rbm_optfmt", |
546 | .data = &cipso_v4_rbm_optfmt, | |
547 | .maxlen = sizeof(int), | |
548 | .mode = 0644, | |
6d9f239a | 549 | .proc_handler = proc_dointvec, |
446fda4f PM |
550 | }, |
551 | { | |
446fda4f PM |
552 | .procname = "cipso_rbm_strictvalid", |
553 | .data = &cipso_v4_rbm_strictvalid, | |
554 | .maxlen = sizeof(int), | |
555 | .mode = 0644, | |
6d9f239a | 556 | .proc_handler = proc_dointvec, |
446fda4f PM |
557 | }, |
558 | #endif /* CONFIG_NETLABEL */ | |
734942cc DW |
559 | { |
560 | .procname = "tcp_available_ulp", | |
561 | .maxlen = TCP_ULP_BUF_MAX, | |
562 | .mode = 0444, | |
563 | .proc_handler = proc_tcp_available_ulp, | |
564 | }, | |
4cdf507d ED |
565 | { |
566 | .procname = "icmp_msgs_per_sec", | |
567 | .data = &sysctl_icmp_msgs_per_sec, | |
568 | .maxlen = sizeof(int), | |
569 | .mode = 0644, | |
570 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 571 | .extra1 = SYSCTL_ZERO, |
4cdf507d ED |
572 | }, |
573 | { | |
574 | .procname = "icmp_msgs_burst", | |
575 | .data = &sysctl_icmp_msgs_burst, | |
576 | .maxlen = sizeof(int), | |
577 | .mode = 0644, | |
578 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 579 | .extra1 = SYSCTL_ZERO, |
4cdf507d | 580 | }, |
95766fff | 581 | { |
95766fff HA |
582 | .procname = "udp_mem", |
583 | .data = &sysctl_udp_mem, | |
584 | .maxlen = sizeof(sysctl_udp_mem), | |
585 | .mode = 0644, | |
8d987e5c | 586 | .proc_handler = proc_doulongvec_minmax, |
95766fff | 587 | }, |
9ab948a9 DA |
588 | { |
589 | .procname = "fib_sync_mem", | |
590 | .data = &sysctl_fib_sync_mem, | |
591 | .maxlen = sizeof(sysctl_fib_sync_mem), | |
592 | .mode = 0644, | |
593 | .proc_handler = proc_douintvec_minmax, | |
594 | .extra1 = &sysctl_fib_sync_mem_min, | |
595 | .extra2 = &sysctl_fib_sync_mem_max, | |
596 | }, | |
ede61ca4 ED |
597 | { |
598 | .procname = "tcp_rx_skb_cache", | |
599 | .data = &tcp_rx_skb_cache_key.key, | |
600 | .mode = 0644, | |
601 | .proc_handler = proc_do_static_key, | |
602 | }, | |
0b7d7f6b ED |
603 | { |
604 | .procname = "tcp_tx_skb_cache", | |
605 | .data = &tcp_tx_skb_cache_key.key, | |
606 | .mode = 0644, | |
607 | .proc_handler = proc_do_static_key, | |
608 | }, | |
f8572d8f | 609 | { } |
1da177e4 | 610 | }; |
3e37c3f9 | 611 | |
68528f09 PE |
612 | static struct ctl_table ipv4_net_table[] = { |
613 | { | |
68528f09 PE |
614 | .procname = "icmp_echo_ignore_all", |
615 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_all, | |
4b6bbf17 | 616 | .maxlen = sizeof(u8), |
68528f09 | 617 | .mode = 0644, |
4b6bbf17 | 618 | .proc_handler = proc_dou8vec_minmax, |
68528f09 | 619 | }, |
f1b8fa9f AR |
620 | { |
621 | .procname = "icmp_echo_enable_probe", | |
622 | .data = &init_net.ipv4.sysctl_icmp_echo_enable_probe, | |
b8128656 | 623 | .maxlen = sizeof(u8), |
f1b8fa9f | 624 | .mode = 0644, |
b8128656 | 625 | .proc_handler = proc_dou8vec_minmax, |
f1b8fa9f AR |
626 | .extra1 = SYSCTL_ZERO, |
627 | .extra2 = SYSCTL_ONE | |
628 | }, | |
68528f09 | 629 | { |
68528f09 PE |
630 | .procname = "icmp_echo_ignore_broadcasts", |
631 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts, | |
4b6bbf17 | 632 | .maxlen = sizeof(u8), |
68528f09 | 633 | .mode = 0644, |
4b6bbf17 | 634 | .proc_handler = proc_dou8vec_minmax, |
68528f09 PE |
635 | }, |
636 | { | |
68528f09 PE |
637 | .procname = "icmp_ignore_bogus_error_responses", |
638 | .data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses, | |
4b6bbf17 | 639 | .maxlen = sizeof(u8), |
68528f09 | 640 | .mode = 0644, |
4b6bbf17 | 641 | .proc_handler = proc_dou8vec_minmax, |
68528f09 PE |
642 | }, |
643 | { | |
68528f09 PE |
644 | .procname = "icmp_errors_use_inbound_ifaddr", |
645 | .data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr, | |
4b6bbf17 | 646 | .maxlen = sizeof(u8), |
68528f09 | 647 | .mode = 0644, |
4b6bbf17 | 648 | .proc_handler = proc_dou8vec_minmax, |
68528f09 PE |
649 | }, |
650 | { | |
68528f09 PE |
651 | .procname = "icmp_ratelimit", |
652 | .data = &init_net.ipv4.sysctl_icmp_ratelimit, | |
653 | .maxlen = sizeof(int), | |
654 | .mode = 0644, | |
6d9f239a | 655 | .proc_handler = proc_dointvec_ms_jiffies, |
68528f09 PE |
656 | }, |
657 | { | |
68528f09 PE |
658 | .procname = "icmp_ratemask", |
659 | .data = &init_net.ipv4.sysctl_icmp_ratemask, | |
660 | .maxlen = sizeof(int), | |
661 | .mode = 0644, | |
6d9f239a | 662 | .proc_handler = proc_dointvec |
68528f09 | 663 | }, |
c319b4d7 VK |
664 | { |
665 | .procname = "ping_group_range", | |
ba6b918a | 666 | .data = &init_net.ipv4.ping_group_range.range, |
7064d16e | 667 | .maxlen = sizeof(gid_t)*2, |
c319b4d7 VK |
668 | .mode = 0644, |
669 | .proc_handler = ipv4_ping_group_range, | |
670 | }, | |
6897445f MM |
671 | #ifdef CONFIG_NET_L3_MASTER_DEV |
672 | { | |
673 | .procname = "raw_l3mdev_accept", | |
674 | .data = &init_net.ipv4.sysctl_raw_l3mdev_accept, | |
4b6bbf17 | 675 | .maxlen = sizeof(u8), |
6897445f | 676 | .mode = 0644, |
4b6bbf17 | 677 | .proc_handler = proc_dou8vec_minmax, |
eec4844f MC |
678 | .extra1 = SYSCTL_ZERO, |
679 | .extra2 = SYSCTL_ONE, | |
6897445f MM |
680 | }, |
681 | #endif | |
5d134f1c HFS |
682 | { |
683 | .procname = "tcp_ecn", | |
684 | .data = &init_net.ipv4.sysctl_tcp_ecn, | |
4b6bbf17 | 685 | .maxlen = sizeof(u8), |
5d134f1c | 686 | .mode = 0644, |
4b6bbf17 | 687 | .proc_handler = proc_dou8vec_minmax, |
5d134f1c | 688 | }, |
49213555 DB |
689 | { |
690 | .procname = "tcp_ecn_fallback", | |
691 | .data = &init_net.ipv4.sysctl_tcp_ecn_fallback, | |
4b6bbf17 | 692 | .maxlen = sizeof(u8), |
49213555 | 693 | .mode = 0644, |
4b6bbf17 | 694 | .proc_handler = proc_dou8vec_minmax, |
49213555 | 695 | }, |
287b7f38 NB |
696 | { |
697 | .procname = "ip_dynaddr", | |
698 | .data = &init_net.ipv4.sysctl_ip_dynaddr, | |
4b6bbf17 | 699 | .maxlen = sizeof(u8), |
287b7f38 | 700 | .mode = 0644, |
4b6bbf17 | 701 | .proc_handler = proc_dou8vec_minmax, |
287b7f38 | 702 | }, |
e21145a9 NB |
703 | { |
704 | .procname = "ip_early_demux", | |
705 | .data = &init_net.ipv4.sysctl_ip_early_demux, | |
4b6bbf17 | 706 | .maxlen = sizeof(u8), |
e21145a9 | 707 | .mode = 0644, |
4b6bbf17 | 708 | .proc_handler = proc_dou8vec_minmax, |
e21145a9 | 709 | }, |
dddb64bc SAK |
710 | { |
711 | .procname = "udp_early_demux", | |
712 | .data = &init_net.ipv4.sysctl_udp_early_demux, | |
2932bcda | 713 | .maxlen = sizeof(u8), |
dddb64bc SAK |
714 | .mode = 0644, |
715 | .proc_handler = proc_udp_early_demux | |
716 | }, | |
717 | { | |
718 | .procname = "tcp_early_demux", | |
719 | .data = &init_net.ipv4.sysctl_tcp_early_demux, | |
2932bcda | 720 | .maxlen = sizeof(u8), |
dddb64bc SAK |
721 | .mode = 0644, |
722 | .proc_handler = proc_tcp_early_demux | |
723 | }, | |
4f80116d RP |
724 | { |
725 | .procname = "nexthop_compat_mode", | |
726 | .data = &init_net.ipv4.sysctl_nexthop_compat_mode, | |
4b6bbf17 | 727 | .maxlen = sizeof(u8), |
4f80116d | 728 | .mode = 0644, |
4b6bbf17 | 729 | .proc_handler = proc_dou8vec_minmax, |
4f80116d RP |
730 | .extra1 = SYSCTL_ZERO, |
731 | .extra2 = SYSCTL_ONE, | |
732 | }, | |
fa50d974 NB |
733 | { |
734 | .procname = "ip_default_ttl", | |
735 | .data = &init_net.ipv4.sysctl_ip_default_ttl, | |
4b6bbf17 | 736 | .maxlen = sizeof(u8), |
fa50d974 | 737 | .mode = 0644, |
4b6bbf17 | 738 | .proc_handler = proc_dou8vec_minmax, |
fa50d974 NB |
739 | .extra1 = &ip_ttl_min, |
740 | .extra2 = &ip_ttl_max, | |
741 | }, | |
0bbf87d8 EB |
742 | { |
743 | .procname = "ip_local_port_range", | |
c9d8f1a6 CW |
744 | .maxlen = sizeof(init_net.ipv4.ip_local_ports.range), |
745 | .data = &init_net.ipv4.ip_local_ports.range, | |
0bbf87d8 EB |
746 | .mode = 0644, |
747 | .proc_handler = ipv4_local_port_range, | |
748 | }, | |
122ff243 WC |
749 | { |
750 | .procname = "ip_local_reserved_ports", | |
751 | .data = &init_net.ipv4.sysctl_local_reserved_ports, | |
752 | .maxlen = 65536, | |
753 | .mode = 0644, | |
754 | .proc_handler = proc_do_large_bitmap, | |
755 | }, | |
974eda11 HFS |
756 | { |
757 | .procname = "ip_no_pmtu_disc", | |
758 | .data = &init_net.ipv4.sysctl_ip_no_pmtu_disc, | |
4b6bbf17 | 759 | .maxlen = sizeof(u8), |
974eda11 | 760 | .mode = 0644, |
4b6bbf17 | 761 | .proc_handler = proc_dou8vec_minmax, |
974eda11 | 762 | }, |
f87c10a8 HFS |
763 | { |
764 | .procname = "ip_forward_use_pmtu", | |
765 | .data = &init_net.ipv4.sysctl_ip_fwd_use_pmtu, | |
4b6bbf17 | 766 | .maxlen = sizeof(u8), |
f87c10a8 | 767 | .mode = 0644, |
4b6bbf17 | 768 | .proc_handler = proc_dou8vec_minmax, |
f87c10a8 | 769 | }, |
432e05d3 PM |
770 | { |
771 | .procname = "ip_forward_update_priority", | |
772 | .data = &init_net.ipv4.sysctl_ip_fwd_update_priority, | |
1c69dedc | 773 | .maxlen = sizeof(u8), |
432e05d3 | 774 | .mode = 0644, |
d18c5d19 | 775 | .proc_handler = ipv4_fwd_update_priority, |
eec4844f MC |
776 | .extra1 = SYSCTL_ZERO, |
777 | .extra2 = SYSCTL_ONE, | |
432e05d3 | 778 | }, |
49a60158 VB |
779 | { |
780 | .procname = "ip_nonlocal_bind", | |
781 | .data = &init_net.ipv4.sysctl_ip_nonlocal_bind, | |
4b6bbf17 | 782 | .maxlen = sizeof(u8), |
49a60158 | 783 | .mode = 0644, |
4b6bbf17 | 784 | .proc_handler = proc_dou8vec_minmax, |
49a60158 | 785 | }, |
4b01a967 KI |
786 | { |
787 | .procname = "ip_autobind_reuse", | |
788 | .data = &init_net.ipv4.sysctl_ip_autobind_reuse, | |
4b6bbf17 | 789 | .maxlen = sizeof(u8), |
4b01a967 | 790 | .mode = 0644, |
4b6bbf17 | 791 | .proc_handler = proc_dou8vec_minmax, |
4b01a967 KI |
792 | .extra1 = SYSCTL_ZERO, |
793 | .extra2 = SYSCTL_ONE, | |
794 | }, | |
e110861f LC |
795 | { |
796 | .procname = "fwmark_reflect", | |
797 | .data = &init_net.ipv4.sysctl_fwmark_reflect, | |
4b6bbf17 | 798 | .maxlen = sizeof(u8), |
e110861f | 799 | .mode = 0644, |
4b6bbf17 | 800 | .proc_handler = proc_dou8vec_minmax, |
e110861f | 801 | }, |
84f39b08 LC |
802 | { |
803 | .procname = "tcp_fwmark_accept", | |
804 | .data = &init_net.ipv4.sysctl_tcp_fwmark_accept, | |
4ecc1baf | 805 | .maxlen = sizeof(u8), |
84f39b08 | 806 | .mode = 0644, |
4ecc1baf | 807 | .proc_handler = proc_dou8vec_minmax, |
84f39b08 | 808 | }, |
6dd9a14e DA |
809 | #ifdef CONFIG_NET_L3_MASTER_DEV |
810 | { | |
811 | .procname = "tcp_l3mdev_accept", | |
812 | .data = &init_net.ipv4.sysctl_tcp_l3mdev_accept, | |
4ecc1baf | 813 | .maxlen = sizeof(u8), |
6dd9a14e | 814 | .mode = 0644, |
4ecc1baf | 815 | .proc_handler = proc_dou8vec_minmax, |
eec4844f MC |
816 | .extra1 = SYSCTL_ZERO, |
817 | .extra2 = SYSCTL_ONE, | |
6dd9a14e DA |
818 | }, |
819 | #endif | |
b0f9ca53 FD |
820 | { |
821 | .procname = "tcp_mtu_probing", | |
822 | .data = &init_net.ipv4.sysctl_tcp_mtu_probing, | |
4ecc1baf | 823 | .maxlen = sizeof(u8), |
b0f9ca53 | 824 | .mode = 0644, |
4ecc1baf | 825 | .proc_handler = proc_dou8vec_minmax, |
b0f9ca53 FD |
826 | }, |
827 | { | |
828 | .procname = "tcp_base_mss", | |
829 | .data = &init_net.ipv4.sysctl_tcp_base_mss, | |
830 | .maxlen = sizeof(int), | |
831 | .mode = 0644, | |
832 | .proc_handler = proc_dointvec, | |
833 | }, | |
5f3e2bf0 ED |
834 | { |
835 | .procname = "tcp_min_snd_mss", | |
836 | .data = &init_net.ipv4.sysctl_tcp_min_snd_mss, | |
837 | .maxlen = sizeof(int), | |
838 | .mode = 0644, | |
839 | .proc_handler = proc_dointvec_minmax, | |
840 | .extra1 = &tcp_min_snd_mss_min, | |
841 | .extra2 = &tcp_min_snd_mss_max, | |
842 | }, | |
c04b79b6 JH |
843 | { |
844 | .procname = "tcp_mtu_probe_floor", | |
845 | .data = &init_net.ipv4.sysctl_tcp_mtu_probe_floor, | |
846 | .maxlen = sizeof(int), | |
847 | .mode = 0644, | |
848 | .proc_handler = proc_dointvec_minmax, | |
849 | .extra1 = &tcp_min_snd_mss_min, | |
850 | .extra2 = &tcp_min_snd_mss_max, | |
851 | }, | |
6b58e0a5 FD |
852 | { |
853 | .procname = "tcp_probe_threshold", | |
854 | .data = &init_net.ipv4.sysctl_tcp_probe_threshold, | |
855 | .maxlen = sizeof(int), | |
856 | .mode = 0644, | |
857 | .proc_handler = proc_dointvec, | |
858 | }, | |
05cbc0db FD |
859 | { |
860 | .procname = "tcp_probe_interval", | |
861 | .data = &init_net.ipv4.sysctl_tcp_probe_interval, | |
d4ce5808 | 862 | .maxlen = sizeof(u32), |
05cbc0db | 863 | .mode = 0644, |
d4ce5808 MŻ |
864 | .proc_handler = proc_douintvec_minmax, |
865 | .extra2 = &u32_max_div_HZ, | |
05cbc0db | 866 | }, |
df2cf4a7 PD |
867 | { |
868 | .procname = "igmp_link_local_mcast_reports", | |
87a8a2ae | 869 | .data = &init_net.ipv4.sysctl_igmp_llm_reports, |
7d4b37eb | 870 | .maxlen = sizeof(u8), |
df2cf4a7 | 871 | .mode = 0644, |
7d4b37eb | 872 | .proc_handler = proc_dou8vec_minmax, |
df2cf4a7 | 873 | }, |
815c5270 NB |
874 | { |
875 | .procname = "igmp_max_memberships", | |
876 | .data = &init_net.ipv4.sysctl_igmp_max_memberships, | |
877 | .maxlen = sizeof(int), | |
878 | .mode = 0644, | |
879 | .proc_handler = proc_dointvec | |
880 | }, | |
166b6b2d NB |
881 | { |
882 | .procname = "igmp_max_msf", | |
883 | .data = &init_net.ipv4.sysctl_igmp_max_msf, | |
884 | .maxlen = sizeof(int), | |
885 | .mode = 0644, | |
886 | .proc_handler = proc_dointvec | |
887 | }, | |
165094af NB |
888 | #ifdef CONFIG_IP_MULTICAST |
889 | { | |
890 | .procname = "igmp_qrv", | |
891 | .data = &init_net.ipv4.sysctl_igmp_qrv, | |
892 | .maxlen = sizeof(int), | |
893 | .mode = 0644, | |
894 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 895 | .extra1 = SYSCTL_ONE |
165094af NB |
896 | }, |
897 | #endif | |
6670e152 SH |
898 | { |
899 | .procname = "tcp_congestion_control", | |
900 | .data = &init_net.ipv4.tcp_congestion_control, | |
901 | .mode = 0644, | |
902 | .maxlen = TCP_CA_NAME_MAX, | |
903 | .proc_handler = proc_tcp_congestion_control, | |
904 | }, | |
9cb8e048 CB |
905 | { |
906 | .procname = "tcp_available_congestion_control", | |
907 | .maxlen = TCP_CA_BUF_MAX, | |
908 | .mode = 0444, | |
909 | .proc_handler = proc_tcp_available_congestion_control, | |
910 | }, | |
911 | { | |
912 | .procname = "tcp_allowed_congestion_control", | |
913 | .maxlen = TCP_CA_BUF_MAX, | |
914 | .mode = 0644, | |
915 | .proc_handler = proc_allowed_congestion_control, | |
916 | }, | |
13b287e8 NB |
917 | { |
918 | .procname = "tcp_keepalive_time", | |
919 | .data = &init_net.ipv4.sysctl_tcp_keepalive_time, | |
920 | .maxlen = sizeof(int), | |
921 | .mode = 0644, | |
922 | .proc_handler = proc_dointvec_jiffies, | |
923 | }, | |
9bd6861b NB |
924 | { |
925 | .procname = "tcp_keepalive_probes", | |
926 | .data = &init_net.ipv4.sysctl_tcp_keepalive_probes, | |
4ecc1baf | 927 | .maxlen = sizeof(u8), |
9bd6861b | 928 | .mode = 0644, |
4ecc1baf | 929 | .proc_handler = proc_dou8vec_minmax, |
9bd6861b | 930 | }, |
b840d15d NB |
931 | { |
932 | .procname = "tcp_keepalive_intvl", | |
933 | .data = &init_net.ipv4.sysctl_tcp_keepalive_intvl, | |
934 | .maxlen = sizeof(int), | |
935 | .mode = 0644, | |
936 | .proc_handler = proc_dointvec_jiffies, | |
937 | }, | |
6fa25166 NB |
938 | { |
939 | .procname = "tcp_syn_retries", | |
940 | .data = &init_net.ipv4.sysctl_tcp_syn_retries, | |
4ecc1baf | 941 | .maxlen = sizeof(u8), |
6fa25166 | 942 | .mode = 0644, |
4ecc1baf | 943 | .proc_handler = proc_dou8vec_minmax, |
6fa25166 NB |
944 | .extra1 = &tcp_syn_retries_min, |
945 | .extra2 = &tcp_syn_retries_max | |
946 | }, | |
7c083ecb NB |
947 | { |
948 | .procname = "tcp_synack_retries", | |
949 | .data = &init_net.ipv4.sysctl_tcp_synack_retries, | |
4ecc1baf | 950 | .maxlen = sizeof(u8), |
7c083ecb | 951 | .mode = 0644, |
4ecc1baf | 952 | .proc_handler = proc_dou8vec_minmax, |
7c083ecb | 953 | }, |
12ed8244 NB |
954 | #ifdef CONFIG_SYN_COOKIES |
955 | { | |
956 | .procname = "tcp_syncookies", | |
957 | .data = &init_net.ipv4.sysctl_tcp_syncookies, | |
4ecc1baf | 958 | .maxlen = sizeof(u8), |
12ed8244 | 959 | .mode = 0644, |
4ecc1baf | 960 | .proc_handler = proc_dou8vec_minmax, |
12ed8244 NB |
961 | }, |
962 | #endif | |
f9ac779f KI |
963 | { |
964 | .procname = "tcp_migrate_req", | |
965 | .data = &init_net.ipv4.sysctl_tcp_migrate_req, | |
966 | .maxlen = sizeof(u8), | |
967 | .mode = 0644, | |
968 | .proc_handler = proc_dou8vec_minmax, | |
969 | .extra1 = SYSCTL_ZERO, | |
970 | .extra2 = SYSCTL_ONE | |
971 | }, | |
1043e25f NB |
972 | { |
973 | .procname = "tcp_reordering", | |
974 | .data = &init_net.ipv4.sysctl_tcp_reordering, | |
975 | .maxlen = sizeof(int), | |
976 | .mode = 0644, | |
977 | .proc_handler = proc_dointvec | |
978 | }, | |
ae5c3f40 NB |
979 | { |
980 | .procname = "tcp_retries1", | |
981 | .data = &init_net.ipv4.sysctl_tcp_retries1, | |
4ecc1baf | 982 | .maxlen = sizeof(u8), |
ae5c3f40 | 983 | .mode = 0644, |
4ecc1baf | 984 | .proc_handler = proc_dou8vec_minmax, |
ae5c3f40 NB |
985 | .extra2 = &tcp_retr1_max |
986 | }, | |
c6214a97 NB |
987 | { |
988 | .procname = "tcp_retries2", | |
989 | .data = &init_net.ipv4.sysctl_tcp_retries2, | |
4ecc1baf | 990 | .maxlen = sizeof(u8), |
c6214a97 | 991 | .mode = 0644, |
4ecc1baf | 992 | .proc_handler = proc_dou8vec_minmax, |
c6214a97 | 993 | }, |
c402d9be NB |
994 | { |
995 | .procname = "tcp_orphan_retries", | |
996 | .data = &init_net.ipv4.sysctl_tcp_orphan_retries, | |
4ecc1baf | 997 | .maxlen = sizeof(u8), |
c402d9be | 998 | .mode = 0644, |
4ecc1baf | 999 | .proc_handler = proc_dou8vec_minmax, |
c402d9be | 1000 | }, |
1e579caa NB |
1001 | { |
1002 | .procname = "tcp_fin_timeout", | |
1003 | .data = &init_net.ipv4.sysctl_tcp_fin_timeout, | |
1004 | .maxlen = sizeof(int), | |
1005 | .mode = 0644, | |
1006 | .proc_handler = proc_dointvec_jiffies, | |
1007 | }, | |
4979f2d9 NB |
1008 | { |
1009 | .procname = "tcp_notsent_lowat", | |
1010 | .data = &init_net.ipv4.sysctl_tcp_notsent_lowat, | |
1011 | .maxlen = sizeof(unsigned int), | |
1012 | .mode = 0644, | |
b007f090 | 1013 | .proc_handler = proc_douintvec, |
4979f2d9 | 1014 | }, |
56ab6b93 HY |
1015 | { |
1016 | .procname = "tcp_tw_reuse", | |
1017 | .data = &init_net.ipv4.sysctl_tcp_tw_reuse, | |
4ecc1baf | 1018 | .maxlen = sizeof(u8), |
56ab6b93 | 1019 | .mode = 0644, |
4ecc1baf | 1020 | .proc_handler = proc_dou8vec_minmax, |
eec4844f | 1021 | .extra1 = SYSCTL_ZERO, |
79e9fed4 | 1022 | .extra2 = &two, |
56ab6b93 | 1023 | }, |
1946e672 HY |
1024 | { |
1025 | .procname = "tcp_max_tw_buckets", | |
1026 | .data = &init_net.ipv4.tcp_death_row.sysctl_max_tw_buckets, | |
1027 | .maxlen = sizeof(int), | |
1028 | .mode = 0644, | |
1029 | .proc_handler = proc_dointvec | |
1030 | }, | |
fee83d09 HY |
1031 | { |
1032 | .procname = "tcp_max_syn_backlog", | |
1033 | .data = &init_net.ipv4.sysctl_max_syn_backlog, | |
1034 | .maxlen = sizeof(int), | |
1035 | .mode = 0644, | |
1036 | .proc_handler = proc_dointvec | |
1037 | }, | |
e1cfcbe8 HY |
1038 | { |
1039 | .procname = "tcp_fastopen", | |
1040 | .data = &init_net.ipv4.sysctl_tcp_fastopen, | |
1041 | .maxlen = sizeof(int), | |
1042 | .mode = 0644, | |
1043 | .proc_handler = proc_dointvec, | |
1044 | }, | |
43713848 HY |
1045 | { |
1046 | .procname = "tcp_fastopen_key", | |
1047 | .mode = 0600, | |
1048 | .data = &init_net.ipv4.sysctl_tcp_fastopen, | |
aa1236cd JB |
1049 | /* maxlen to print the list of keys in hex (*2), with dashes |
1050 | * separating doublewords and a comma in between keys. | |
1051 | */ | |
1052 | .maxlen = ((TCP_FASTOPEN_KEY_LENGTH * | |
1053 | 2 * TCP_FASTOPEN_KEY_MAX) + | |
1054 | (TCP_FASTOPEN_KEY_MAX * 5)), | |
43713848 HY |
1055 | .proc_handler = proc_tcp_fastopen_key, |
1056 | }, | |
3733be14 HY |
1057 | { |
1058 | .procname = "tcp_fastopen_blackhole_timeout_sec", | |
1059 | .data = &init_net.ipv4.sysctl_tcp_fastopen_blackhole_timeout, | |
1060 | .maxlen = sizeof(int), | |
1061 | .mode = 0644, | |
1062 | .proc_handler = proc_tfo_blackhole_detect_timeout, | |
eec4844f | 1063 | .extra1 = SYSCTL_ZERO, |
3733be14 | 1064 | }, |
a6db4494 DA |
1065 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
1066 | { | |
1067 | .procname = "fib_multipath_use_neigh", | |
1068 | .data = &init_net.ipv4.sysctl_fib_multipath_use_neigh, | |
be205fe6 | 1069 | .maxlen = sizeof(u8), |
a6db4494 | 1070 | .mode = 0644, |
be205fe6 | 1071 | .proc_handler = proc_dou8vec_minmax, |
eec4844f MC |
1072 | .extra1 = SYSCTL_ZERO, |
1073 | .extra2 = SYSCTL_ONE, | |
bf4e0a3d NA |
1074 | }, |
1075 | { | |
1076 | .procname = "fib_multipath_hash_policy", | |
1077 | .data = &init_net.ipv4.sysctl_fib_multipath_hash_policy, | |
be205fe6 | 1078 | .maxlen = sizeof(u8), |
bf4e0a3d | 1079 | .mode = 0644, |
3ae6ec08 | 1080 | .proc_handler = proc_fib_multipath_hash_policy, |
eec4844f | 1081 | .extra1 = SYSCTL_ZERO, |
4253b498 | 1082 | .extra2 = &three, |
a6db4494 | 1083 | }, |
ce5c9c20 IS |
1084 | { |
1085 | .procname = "fib_multipath_hash_fields", | |
1086 | .data = &init_net.ipv4.sysctl_fib_multipath_hash_fields, | |
1087 | .maxlen = sizeof(u32), | |
1088 | .mode = 0644, | |
eb0e4d59 | 1089 | .proc_handler = proc_fib_multipath_hash_fields, |
ce5c9c20 IS |
1090 | .extra1 = SYSCTL_ONE, |
1091 | .extra2 = &fib_multipath_hash_fields_all_mask, | |
1092 | }, | |
a6db4494 | 1093 | #endif |
4548b683 KJ |
1094 | { |
1095 | .procname = "ip_unprivileged_port_start", | |
1096 | .maxlen = sizeof(int), | |
1097 | .data = &init_net.ipv4.sysctl_ip_prot_sock, | |
1098 | .mode = 0644, | |
1099 | .proc_handler = ipv4_privileged_ports, | |
1100 | }, | |
63a6fff3 RS |
1101 | #ifdef CONFIG_NET_L3_MASTER_DEV |
1102 | { | |
1103 | .procname = "udp_l3mdev_accept", | |
1104 | .data = &init_net.ipv4.sysctl_udp_l3mdev_accept, | |
cd04bd02 | 1105 | .maxlen = sizeof(u8), |
63a6fff3 | 1106 | .mode = 0644, |
cd04bd02 | 1107 | .proc_handler = proc_dou8vec_minmax, |
eec4844f MC |
1108 | .extra1 = SYSCTL_ZERO, |
1109 | .extra2 = SYSCTL_ONE, | |
63a6fff3 RS |
1110 | }, |
1111 | #endif | |
f9301034 ED |
1112 | { |
1113 | .procname = "tcp_sack", | |
1114 | .data = &init_net.ipv4.sysctl_tcp_sack, | |
4ecc1baf | 1115 | .maxlen = sizeof(u8), |
f9301034 | 1116 | .mode = 0644, |
4ecc1baf | 1117 | .proc_handler = proc_dou8vec_minmax, |
f9301034 | 1118 | }, |
9bb37ef0 ED |
1119 | { |
1120 | .procname = "tcp_window_scaling", | |
1121 | .data = &init_net.ipv4.sysctl_tcp_window_scaling, | |
4ecc1baf | 1122 | .maxlen = sizeof(u8), |
9bb37ef0 | 1123 | .mode = 0644, |
4ecc1baf | 1124 | .proc_handler = proc_dou8vec_minmax, |
9bb37ef0 | 1125 | }, |
5d2ed052 ED |
1126 | { |
1127 | .procname = "tcp_timestamps", | |
1128 | .data = &init_net.ipv4.sysctl_tcp_timestamps, | |
4ecc1baf | 1129 | .maxlen = sizeof(u8), |
5d2ed052 | 1130 | .mode = 0644, |
4ecc1baf | 1131 | .proc_handler = proc_dou8vec_minmax, |
5d2ed052 | 1132 | }, |
2ae21cf5 ED |
1133 | { |
1134 | .procname = "tcp_early_retrans", | |
1135 | .data = &init_net.ipv4.sysctl_tcp_early_retrans, | |
4ecc1baf | 1136 | .maxlen = sizeof(u8), |
2ae21cf5 | 1137 | .mode = 0644, |
4ecc1baf | 1138 | .proc_handler = proc_dou8vec_minmax, |
eec4844f | 1139 | .extra1 = SYSCTL_ZERO, |
2ae21cf5 ED |
1140 | .extra2 = &four, |
1141 | }, | |
e20223f1 ED |
1142 | { |
1143 | .procname = "tcp_recovery", | |
1144 | .data = &init_net.ipv4.sysctl_tcp_recovery, | |
4ecc1baf | 1145 | .maxlen = sizeof(u8), |
e20223f1 | 1146 | .mode = 0644, |
4ecc1baf | 1147 | .proc_handler = proc_dou8vec_minmax, |
e20223f1 | 1148 | }, |
2c04ac8a ED |
1149 | { |
1150 | .procname = "tcp_thin_linear_timeouts", | |
1151 | .data = &init_net.ipv4.sysctl_tcp_thin_linear_timeouts, | |
4ecc1baf | 1152 | .maxlen = sizeof(u8), |
2c04ac8a | 1153 | .mode = 0644, |
4ecc1baf | 1154 | .proc_handler = proc_dou8vec_minmax, |
2c04ac8a | 1155 | }, |
b510f0d2 ED |
1156 | { |
1157 | .procname = "tcp_slow_start_after_idle", | |
1158 | .data = &init_net.ipv4.sysctl_tcp_slow_start_after_idle, | |
4ecc1baf | 1159 | .maxlen = sizeof(u8), |
b510f0d2 | 1160 | .mode = 0644, |
4ecc1baf | 1161 | .proc_handler = proc_dou8vec_minmax, |
b510f0d2 | 1162 | }, |
e0a1e5b5 ED |
1163 | { |
1164 | .procname = "tcp_retrans_collapse", | |
1165 | .data = &init_net.ipv4.sysctl_tcp_retrans_collapse, | |
4ecc1baf | 1166 | .maxlen = sizeof(u8), |
e0a1e5b5 | 1167 | .mode = 0644, |
4ecc1baf | 1168 | .proc_handler = proc_dou8vec_minmax, |
e0a1e5b5 | 1169 | }, |
3f4c7c6f ED |
1170 | { |
1171 | .procname = "tcp_stdurg", | |
1172 | .data = &init_net.ipv4.sysctl_tcp_stdurg, | |
4ecc1baf | 1173 | .maxlen = sizeof(u8), |
3f4c7c6f | 1174 | .mode = 0644, |
4ecc1baf | 1175 | .proc_handler = proc_dou8vec_minmax, |
3f4c7c6f | 1176 | }, |
625357aa ED |
1177 | { |
1178 | .procname = "tcp_rfc1337", | |
1179 | .data = &init_net.ipv4.sysctl_tcp_rfc1337, | |
4ecc1baf | 1180 | .maxlen = sizeof(u8), |
625357aa | 1181 | .mode = 0644, |
4ecc1baf | 1182 | .proc_handler = proc_dou8vec_minmax, |
625357aa | 1183 | }, |
65c9410c ED |
1184 | { |
1185 | .procname = "tcp_abort_on_overflow", | |
1186 | .data = &init_net.ipv4.sysctl_tcp_abort_on_overflow, | |
4ecc1baf | 1187 | .maxlen = sizeof(u8), |
65c9410c | 1188 | .mode = 0644, |
4ecc1baf | 1189 | .proc_handler = proc_dou8vec_minmax, |
65c9410c | 1190 | }, |
0bc65a28 ED |
1191 | { |
1192 | .procname = "tcp_fack", | |
1193 | .data = &init_net.ipv4.sysctl_tcp_fack, | |
4ecc1baf | 1194 | .maxlen = sizeof(u8), |
0bc65a28 | 1195 | .mode = 0644, |
4ecc1baf | 1196 | .proc_handler = proc_dou8vec_minmax, |
0bc65a28 | 1197 | }, |
c6e21803 ED |
1198 | { |
1199 | .procname = "tcp_max_reordering", | |
1200 | .data = &init_net.ipv4.sysctl_tcp_max_reordering, | |
1201 | .maxlen = sizeof(int), | |
1202 | .mode = 0644, | |
1203 | .proc_handler = proc_dointvec | |
1204 | }, | |
6496f6bd ED |
1205 | { |
1206 | .procname = "tcp_dsack", | |
1207 | .data = &init_net.ipv4.sysctl_tcp_dsack, | |
4ecc1baf | 1208 | .maxlen = sizeof(u8), |
6496f6bd | 1209 | .mode = 0644, |
4ecc1baf | 1210 | .proc_handler = proc_dou8vec_minmax, |
6496f6bd | 1211 | }, |
0c12654a ED |
1212 | { |
1213 | .procname = "tcp_app_win", | |
1214 | .data = &init_net.ipv4.sysctl_tcp_app_win, | |
4ecc1baf | 1215 | .maxlen = sizeof(u8), |
0c12654a | 1216 | .mode = 0644, |
4ecc1baf | 1217 | .proc_handler = proc_dou8vec_minmax, |
0c12654a | 1218 | }, |
94f0893e ED |
1219 | { |
1220 | .procname = "tcp_adv_win_scale", | |
1221 | .data = &init_net.ipv4.sysctl_tcp_adv_win_scale, | |
1222 | .maxlen = sizeof(int), | |
1223 | .mode = 0644, | |
1224 | .proc_handler = proc_dointvec_minmax, | |
1225 | .extra1 = &tcp_adv_win_scale_min, | |
1226 | .extra2 = &tcp_adv_win_scale_max, | |
1227 | }, | |
af9b69a7 ED |
1228 | { |
1229 | .procname = "tcp_frto", | |
1230 | .data = &init_net.ipv4.sysctl_tcp_frto, | |
4ecc1baf | 1231 | .maxlen = sizeof(u8), |
af9b69a7 | 1232 | .mode = 0644, |
4ecc1baf | 1233 | .proc_handler = proc_dou8vec_minmax, |
af9b69a7 | 1234 | }, |
ec36e416 ED |
1235 | { |
1236 | .procname = "tcp_no_metrics_save", | |
1237 | .data = &init_net.ipv4.sysctl_tcp_nometrics_save, | |
4ecc1baf | 1238 | .maxlen = sizeof(u8), |
ec36e416 | 1239 | .mode = 0644, |
4ecc1baf | 1240 | .proc_handler = proc_dou8vec_minmax, |
ec36e416 | 1241 | }, |
65e6d901 KYY |
1242 | { |
1243 | .procname = "tcp_no_ssthresh_metrics_save", | |
1244 | .data = &init_net.ipv4.sysctl_tcp_no_ssthresh_metrics_save, | |
4ecc1baf | 1245 | .maxlen = sizeof(u8), |
65e6d901 | 1246 | .mode = 0644, |
4ecc1baf | 1247 | .proc_handler = proc_dou8vec_minmax, |
65e6d901 KYY |
1248 | .extra1 = SYSCTL_ZERO, |
1249 | .extra2 = SYSCTL_ONE, | |
1250 | }, | |
4540c0cf ED |
1251 | { |
1252 | .procname = "tcp_moderate_rcvbuf", | |
1253 | .data = &init_net.ipv4.sysctl_tcp_moderate_rcvbuf, | |
4ecc1baf | 1254 | .maxlen = sizeof(u8), |
4540c0cf | 1255 | .mode = 0644, |
4ecc1baf | 1256 | .proc_handler = proc_dou8vec_minmax, |
4540c0cf | 1257 | }, |
d06a9904 ED |
1258 | { |
1259 | .procname = "tcp_tso_win_divisor", | |
1260 | .data = &init_net.ipv4.sysctl_tcp_tso_win_divisor, | |
4ecc1baf | 1261 | .maxlen = sizeof(u8), |
d06a9904 | 1262 | .mode = 0644, |
4ecc1baf | 1263 | .proc_handler = proc_dou8vec_minmax, |
d06a9904 | 1264 | }, |
ceef9ab6 ED |
1265 | { |
1266 | .procname = "tcp_workaround_signed_windows", | |
1267 | .data = &init_net.ipv4.sysctl_tcp_workaround_signed_windows, | |
4ecc1baf | 1268 | .maxlen = sizeof(u8), |
ceef9ab6 | 1269 | .mode = 0644, |
4ecc1baf | 1270 | .proc_handler = proc_dou8vec_minmax, |
ceef9ab6 | 1271 | }, |
9184d8bb ED |
1272 | { |
1273 | .procname = "tcp_limit_output_bytes", | |
1274 | .data = &init_net.ipv4.sysctl_tcp_limit_output_bytes, | |
1275 | .maxlen = sizeof(int), | |
1276 | .mode = 0644, | |
1277 | .proc_handler = proc_dointvec | |
1278 | }, | |
b530b681 ED |
1279 | { |
1280 | .procname = "tcp_challenge_ack_limit", | |
1281 | .data = &init_net.ipv4.sysctl_tcp_challenge_ack_limit, | |
1282 | .maxlen = sizeof(int), | |
1283 | .mode = 0644, | |
1284 | .proc_handler = proc_dointvec | |
1285 | }, | |
26e9596e ED |
1286 | { |
1287 | .procname = "tcp_min_tso_segs", | |
1288 | .data = &init_net.ipv4.sysctl_tcp_min_tso_segs, | |
4ecc1baf | 1289 | .maxlen = sizeof(u8), |
26e9596e | 1290 | .mode = 0644, |
4ecc1baf | 1291 | .proc_handler = proc_dou8vec_minmax, |
eec4844f | 1292 | .extra1 = SYSCTL_ONE, |
26e9596e | 1293 | }, |
bd239704 ED |
1294 | { |
1295 | .procname = "tcp_min_rtt_wlen", | |
1296 | .data = &init_net.ipv4.sysctl_tcp_min_rtt_wlen, | |
1297 | .maxlen = sizeof(int), | |
1298 | .mode = 0644, | |
19fad20d | 1299 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1300 | .extra1 = SYSCTL_ZERO, |
19fad20d | 1301 | .extra2 = &one_day_secs |
bd239704 | 1302 | }, |
790f00e1 ED |
1303 | { |
1304 | .procname = "tcp_autocorking", | |
1305 | .data = &init_net.ipv4.sysctl_tcp_autocorking, | |
4ecc1baf | 1306 | .maxlen = sizeof(u8), |
790f00e1 | 1307 | .mode = 0644, |
4ecc1baf | 1308 | .proc_handler = proc_dou8vec_minmax, |
eec4844f MC |
1309 | .extra1 = SYSCTL_ZERO, |
1310 | .extra2 = SYSCTL_ONE, | |
790f00e1 | 1311 | }, |
4170ba6b ED |
1312 | { |
1313 | .procname = "tcp_invalid_ratelimit", | |
1314 | .data = &init_net.ipv4.sysctl_tcp_invalid_ratelimit, | |
1315 | .maxlen = sizeof(int), | |
1316 | .mode = 0644, | |
1317 | .proc_handler = proc_dointvec_ms_jiffies, | |
1318 | }, | |
23a7102a ED |
1319 | { |
1320 | .procname = "tcp_pacing_ss_ratio", | |
1321 | .data = &init_net.ipv4.sysctl_tcp_pacing_ss_ratio, | |
1322 | .maxlen = sizeof(int), | |
1323 | .mode = 0644, | |
1324 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1325 | .extra1 = SYSCTL_ZERO, |
23a7102a ED |
1326 | .extra2 = &thousand, |
1327 | }, | |
c26e91f8 ED |
1328 | { |
1329 | .procname = "tcp_pacing_ca_ratio", | |
1330 | .data = &init_net.ipv4.sysctl_tcp_pacing_ca_ratio, | |
1331 | .maxlen = sizeof(int), | |
1332 | .mode = 0644, | |
1333 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1334 | .extra1 = SYSCTL_ZERO, |
c26e91f8 ED |
1335 | .extra2 = &thousand, |
1336 | }, | |
356d1833 ED |
1337 | { |
1338 | .procname = "tcp_wmem", | |
1339 | .data = &init_net.ipv4.sysctl_tcp_wmem, | |
1340 | .maxlen = sizeof(init_net.ipv4.sysctl_tcp_wmem), | |
1341 | .mode = 0644, | |
1342 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1343 | .extra1 = SYSCTL_ONE, |
356d1833 ED |
1344 | }, |
1345 | { | |
1346 | .procname = "tcp_rmem", | |
1347 | .data = &init_net.ipv4.sysctl_tcp_rmem, | |
1348 | .maxlen = sizeof(init_net.ipv4.sysctl_tcp_rmem), | |
1349 | .mode = 0644, | |
1350 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1351 | .extra1 = SYSCTL_ONE, |
356d1833 | 1352 | }, |
6d82aa24 ED |
1353 | { |
1354 | .procname = "tcp_comp_sack_delay_ns", | |
1355 | .data = &init_net.ipv4.sysctl_tcp_comp_sack_delay_ns, | |
1356 | .maxlen = sizeof(unsigned long), | |
1357 | .mode = 0644, | |
1358 | .proc_handler = proc_doulongvec_minmax, | |
1359 | }, | |
a70437cc ED |
1360 | { |
1361 | .procname = "tcp_comp_sack_slack_ns", | |
1362 | .data = &init_net.ipv4.sysctl_tcp_comp_sack_slack_ns, | |
1363 | .maxlen = sizeof(unsigned long), | |
1364 | .mode = 0644, | |
1365 | .proc_handler = proc_doulongvec_minmax, | |
1366 | }, | |
9c21d2fc ED |
1367 | { |
1368 | .procname = "tcp_comp_sack_nr", | |
1369 | .data = &init_net.ipv4.sysctl_tcp_comp_sack_nr, | |
1c3289c9 | 1370 | .maxlen = sizeof(u8), |
9c21d2fc | 1371 | .mode = 0644, |
1c3289c9 | 1372 | .proc_handler = proc_dou8vec_minmax, |
eec4844f | 1373 | .extra1 = SYSCTL_ZERO, |
9c21d2fc | 1374 | }, |
ac8f1710 WW |
1375 | { |
1376 | .procname = "tcp_reflect_tos", | |
1377 | .data = &init_net.ipv4.sysctl_tcp_reflect_tos, | |
4ecc1baf | 1378 | .maxlen = sizeof(u8), |
ac8f1710 | 1379 | .mode = 0644, |
4ecc1baf | 1380 | .proc_handler = proc_dou8vec_minmax, |
ac8f1710 WW |
1381 | .extra1 = SYSCTL_ZERO, |
1382 | .extra2 = SYSCTL_ONE, | |
1383 | }, | |
1e802951 TZ |
1384 | { |
1385 | .procname = "udp_rmem_min", | |
1386 | .data = &init_net.ipv4.sysctl_udp_rmem_min, | |
1387 | .maxlen = sizeof(init_net.ipv4.sysctl_udp_rmem_min), | |
1388 | .mode = 0644, | |
1389 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1390 | .extra1 = SYSCTL_ONE |
1e802951 TZ |
1391 | }, |
1392 | { | |
1393 | .procname = "udp_wmem_min", | |
1394 | .data = &init_net.ipv4.sysctl_udp_wmem_min, | |
1395 | .maxlen = sizeof(init_net.ipv4.sysctl_udp_wmem_min), | |
1396 | .mode = 0644, | |
1397 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1398 | .extra1 = SYSCTL_ONE |
1e802951 | 1399 | }, |
680aea08 AC |
1400 | { |
1401 | .procname = "fib_notify_on_flag_change", | |
1402 | .data = &init_net.ipv4.sysctl_fib_notify_on_flag_change, | |
b2908fac | 1403 | .maxlen = sizeof(u8), |
680aea08 | 1404 | .mode = 0644, |
b2908fac | 1405 | .proc_handler = proc_dou8vec_minmax, |
680aea08 | 1406 | .extra1 = SYSCTL_ZERO, |
648106c3 | 1407 | .extra2 = &two, |
680aea08 | 1408 | }, |
68528f09 PE |
1409 | { } |
1410 | }; | |
1411 | ||
1577519d PE |
1412 | static __net_init int ipv4_sysctl_init_net(struct net *net) |
1413 | { | |
68528f09 PE |
1414 | struct ctl_table *table; |
1415 | ||
1416 | table = ipv4_net_table; | |
09ad9bc7 | 1417 | if (!net_eq(net, &init_net)) { |
0a6fa23d EB |
1418 | int i; |
1419 | ||
68528f09 | 1420 | table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL); |
51456b29 | 1421 | if (!table) |
68528f09 PE |
1422 | goto err_alloc; |
1423 | ||
97684f09 JR |
1424 | for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++) { |
1425 | if (table[i].data) { | |
1426 | /* Update the variables to point into | |
1427 | * the current struct net | |
1428 | */ | |
1429 | table[i].data += (void *)net - (void *)&init_net; | |
1430 | } else { | |
1431 | /* Entries without data pointer are global; | |
1432 | * Make them read-only in non-init_net ns | |
1433 | */ | |
1434 | table[i].mode &= ~0222; | |
1435 | } | |
1436 | } | |
68528f09 PE |
1437 | } |
1438 | ||
ec8f23ce | 1439 | net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table); |
51456b29 | 1440 | if (!net->ipv4.ipv4_hdr) |
68528f09 PE |
1441 | goto err_reg; |
1442 | ||
122ff243 WC |
1443 | net->ipv4.sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL); |
1444 | if (!net->ipv4.sysctl_local_reserved_ports) | |
1445 | goto err_ports; | |
1446 | ||
1577519d | 1447 | return 0; |
68528f09 | 1448 | |
122ff243 WC |
1449 | err_ports: |
1450 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
68528f09 | 1451 | err_reg: |
09ad9bc7 | 1452 | if (!net_eq(net, &init_net)) |
68528f09 PE |
1453 | kfree(table); |
1454 | err_alloc: | |
1455 | return -ENOMEM; | |
1577519d PE |
1456 | } |
1457 | ||
1458 | static __net_exit void ipv4_sysctl_exit_net(struct net *net) | |
1459 | { | |
68528f09 PE |
1460 | struct ctl_table *table; |
1461 | ||
122ff243 | 1462 | kfree(net->ipv4.sysctl_local_reserved_ports); |
68528f09 PE |
1463 | table = net->ipv4.ipv4_hdr->ctl_table_arg; |
1464 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
1465 | kfree(table); | |
1577519d PE |
1466 | } |
1467 | ||
1468 | static __net_initdata struct pernet_operations ipv4_sysctl_ops = { | |
1469 | .init = ipv4_sysctl_init_net, | |
1470 | .exit = ipv4_sysctl_exit_net, | |
1471 | }; | |
1472 | ||
3e37c3f9 PE |
1473 | static __init int sysctl_ipv4_init(void) |
1474 | { | |
1475 | struct ctl_table_header *hdr; | |
1476 | ||
ec8f23ce | 1477 | hdr = register_net_sysctl(&init_net, "net/ipv4", ipv4_table); |
51456b29 | 1478 | if (!hdr) |
1577519d PE |
1479 | return -ENOMEM; |
1480 | ||
1481 | if (register_pernet_subsys(&ipv4_sysctl_ops)) { | |
5dd3df10 | 1482 | unregister_net_sysctl_table(hdr); |
1577519d PE |
1483 | return -ENOMEM; |
1484 | } | |
1485 | ||
1486 | return 0; | |
3e37c3f9 PE |
1487 | } |
1488 | ||
1489 | __initcall(sysctl_ipv4_init); |