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 | |
79e9fed4 | 31 | static int two = 2; |
6ba8a3b1 | 32 | static int four = 4; |
43e122b0 | 33 | static int thousand = 1000; |
e905a9ed | 34 | static int tcp_retr1_max = 255; |
1da177e4 LT |
35 | static int ip_local_port_range_min[] = { 1, 1 }; |
36 | static int ip_local_port_range_max[] = { 65535, 65535 }; | |
0147fc05 AD |
37 | static int tcp_adv_win_scale_min = -31; |
38 | static int tcp_adv_win_scale_max = 31; | |
5f3e2bf0 ED |
39 | static int tcp_min_snd_mss_min = TCP_MIN_SND_MSS; |
40 | static int tcp_min_snd_mss_max = 65535; | |
4548b683 KJ |
41 | static int ip_privileged_port_min; |
42 | static int ip_privileged_port_max = 65535; | |
249fab77 ED |
43 | static int ip_ttl_min = 1; |
44 | static int ip_ttl_max = 255; | |
651e9271 MT |
45 | static int tcp_syn_retries_min = 1; |
46 | static int tcp_syn_retries_max = MAX_TCP_SYNCNT; | |
c319b4d7 VK |
47 | static int ip_ping_group_range_min[] = { 0, 0 }; |
48 | static int ip_ping_group_range_max[] = { GID_T_MAX, GID_T_MAX }; | |
9c21d2fc | 49 | static int comp_sack_nr_max = 255; |
d4ce5808 | 50 | static u32 u32_max_div_HZ = UINT_MAX / HZ; |
19fad20d | 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, |
32927393 | 73 | void *buffer, size_t *lenp, loff_t *ppos) |
227b60f5 | 74 | { |
0bbf87d8 | 75 | struct net *net = |
c9d8f1a6 | 76 | container_of(table->data, struct net, ipv4.ip_local_ports.range); |
227b60f5 | 77 | int ret; |
3c689b73 | 78 | int range[2]; |
fe2c6338 | 79 | struct ctl_table tmp = { |
227b60f5 SH |
80 | .data = &range, |
81 | .maxlen = sizeof(range), | |
82 | .mode = table->mode, | |
83 | .extra1 = &ip_local_port_range_min, | |
84 | .extra2 = &ip_local_port_range_max, | |
85 | }; | |
86 | ||
0bbf87d8 EB |
87 | inet_get_local_port_range(net, &range[0], &range[1]); |
88 | ||
8d65af78 | 89 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
227b60f5 SH |
90 | |
91 | if (write && ret == 0) { | |
4548b683 KJ |
92 | /* Ensure that the upper limit is not smaller than the lower, |
93 | * and that the lower does not encroach upon the privileged | |
94 | * port limit. | |
95 | */ | |
96 | if ((range[1] < range[0]) || | |
97 | (range[0] < net->ipv4.sysctl_ip_prot_sock)) | |
227b60f5 SH |
98 | ret = -EINVAL; |
99 | else | |
0bbf87d8 | 100 | set_local_port_range(net, range); |
227b60f5 SH |
101 | } |
102 | ||
103 | return ret; | |
104 | } | |
105 | ||
4548b683 KJ |
106 | /* Validate changes from /proc interface. */ |
107 | static int ipv4_privileged_ports(struct ctl_table *table, int write, | |
32927393 | 108 | void *buffer, size_t *lenp, loff_t *ppos) |
4548b683 KJ |
109 | { |
110 | struct net *net = container_of(table->data, struct net, | |
111 | ipv4.sysctl_ip_prot_sock); | |
112 | int ret; | |
113 | int pports; | |
114 | int range[2]; | |
115 | struct ctl_table tmp = { | |
116 | .data = &pports, | |
117 | .maxlen = sizeof(pports), | |
118 | .mode = table->mode, | |
119 | .extra1 = &ip_privileged_port_min, | |
120 | .extra2 = &ip_privileged_port_max, | |
121 | }; | |
122 | ||
123 | pports = net->ipv4.sysctl_ip_prot_sock; | |
124 | ||
125 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); | |
126 | ||
127 | if (write && ret == 0) { | |
128 | inet_get_local_port_range(net, &range[0], &range[1]); | |
129 | /* Ensure that the local port range doesn't overlap with the | |
130 | * privileged port range. | |
131 | */ | |
132 | if (range[0] < pports) | |
133 | ret = -EINVAL; | |
134 | else | |
135 | net->ipv4.sysctl_ip_prot_sock = pports; | |
136 | } | |
137 | ||
138 | return ret; | |
139 | } | |
c319b4d7 | 140 | |
7064d16e | 141 | static void inet_get_ping_group_range_table(struct ctl_table *table, kgid_t *low, kgid_t *high) |
c319b4d7 | 142 | { |
7064d16e | 143 | kgid_t *data = table->data; |
0bbf87d8 | 144 | struct net *net = |
ba6b918a | 145 | container_of(table->data, struct net, ipv4.ping_group_range.range); |
95c96174 | 146 | unsigned int seq; |
c319b4d7 | 147 | do { |
396a30cc | 148 | seq = read_seqbegin(&net->ipv4.ping_group_range.lock); |
c319b4d7 VK |
149 | |
150 | *low = data[0]; | |
151 | *high = data[1]; | |
396a30cc | 152 | } while (read_seqretry(&net->ipv4.ping_group_range.lock, seq)); |
c319b4d7 VK |
153 | } |
154 | ||
155 | /* Update system visible IP port range */ | |
7064d16e | 156 | static void set_ping_group_range(struct ctl_table *table, kgid_t low, kgid_t high) |
c319b4d7 | 157 | { |
7064d16e | 158 | kgid_t *data = table->data; |
0bbf87d8 | 159 | struct net *net = |
ba6b918a | 160 | container_of(table->data, struct net, ipv4.ping_group_range.range); |
396a30cc | 161 | write_seqlock(&net->ipv4.ping_group_range.lock); |
7064d16e EB |
162 | data[0] = low; |
163 | data[1] = high; | |
396a30cc | 164 | write_sequnlock(&net->ipv4.ping_group_range.lock); |
c319b4d7 VK |
165 | } |
166 | ||
167 | /* Validate changes from /proc interface. */ | |
fe2c6338 | 168 | static int ipv4_ping_group_range(struct ctl_table *table, int write, |
32927393 | 169 | void *buffer, size_t *lenp, loff_t *ppos) |
c319b4d7 | 170 | { |
7064d16e | 171 | struct user_namespace *user_ns = current_user_ns(); |
c319b4d7 | 172 | int ret; |
7064d16e EB |
173 | gid_t urange[2]; |
174 | kgid_t low, high; | |
fe2c6338 | 175 | struct ctl_table tmp = { |
7064d16e EB |
176 | .data = &urange, |
177 | .maxlen = sizeof(urange), | |
c319b4d7 VK |
178 | .mode = table->mode, |
179 | .extra1 = &ip_ping_group_range_min, | |
180 | .extra2 = &ip_ping_group_range_max, | |
181 | }; | |
182 | ||
7064d16e EB |
183 | inet_get_ping_group_range_table(table, &low, &high); |
184 | urange[0] = from_kgid_munged(user_ns, low); | |
185 | urange[1] = from_kgid_munged(user_ns, high); | |
c319b4d7 VK |
186 | ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); |
187 | ||
7064d16e EB |
188 | if (write && ret == 0) { |
189 | low = make_kgid(user_ns, urange[0]); | |
190 | high = make_kgid(user_ns, urange[1]); | |
70ba5b6d TH |
191 | if (!gid_valid(low) || !gid_valid(high)) |
192 | return -EINVAL; | |
193 | if (urange[1] < urange[0] || gid_lt(high, low)) { | |
7064d16e EB |
194 | low = make_kgid(&init_user_ns, 1); |
195 | high = make_kgid(&init_user_ns, 0); | |
196 | } | |
197 | set_ping_group_range(table, low, high); | |
198 | } | |
c319b4d7 VK |
199 | |
200 | return ret; | |
201 | } | |
202 | ||
d18c5d19 | 203 | static int ipv4_fwd_update_priority(struct ctl_table *table, int write, |
32927393 | 204 | void *buffer, size_t *lenp, loff_t *ppos) |
d18c5d19 PM |
205 | { |
206 | struct net *net; | |
207 | int ret; | |
208 | ||
209 | net = container_of(table->data, struct net, | |
210 | ipv4.sysctl_ip_fwd_update_priority); | |
1c69dedc | 211 | ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
d18c5d19 PM |
212 | if (write && ret == 0) |
213 | call_netevent_notifiers(NETEVENT_IPV4_FWD_UPDATE_PRIORITY_UPDATE, | |
214 | net); | |
215 | ||
216 | return ret; | |
217 | } | |
218 | ||
fe2c6338 | 219 | static int proc_tcp_congestion_control(struct ctl_table *ctl, int write, |
32927393 | 220 | void *buffer, size_t *lenp, loff_t *ppos) |
317a76f9 | 221 | { |
6670e152 SH |
222 | struct net *net = container_of(ctl->data, struct net, |
223 | ipv4.tcp_congestion_control); | |
317a76f9 | 224 | char val[TCP_CA_NAME_MAX]; |
fe2c6338 | 225 | struct ctl_table tbl = { |
317a76f9 SH |
226 | .data = val, |
227 | .maxlen = TCP_CA_NAME_MAX, | |
228 | }; | |
229 | int ret; | |
230 | ||
6670e152 | 231 | tcp_get_default_congestion_control(net, val); |
317a76f9 | 232 | |
8d65af78 | 233 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
317a76f9 | 234 | if (write && ret == 0) |
6670e152 | 235 | ret = tcp_set_default_congestion_control(net, val); |
317a76f9 SH |
236 | return ret; |
237 | } | |
238 | ||
fe2c6338 | 239 | static int proc_tcp_available_congestion_control(struct ctl_table *ctl, |
32927393 CH |
240 | int write, void *buffer, |
241 | size_t *lenp, loff_t *ppos) | |
3ff825b2 | 242 | { |
fe2c6338 | 243 | struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, }; |
3ff825b2 SH |
244 | int ret; |
245 | ||
246 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
247 | if (!tbl.data) | |
248 | return -ENOMEM; | |
249 | tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX); | |
8d65af78 | 250 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
3ff825b2 SH |
251 | kfree(tbl.data); |
252 | return ret; | |
253 | } | |
254 | ||
fe2c6338 | 255 | static int proc_allowed_congestion_control(struct ctl_table *ctl, |
32927393 CH |
256 | int write, void *buffer, |
257 | size_t *lenp, loff_t *ppos) | |
ce7bc3bf | 258 | { |
fe2c6338 | 259 | struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX }; |
ce7bc3bf SH |
260 | int ret; |
261 | ||
262 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
263 | if (!tbl.data) | |
264 | return -ENOMEM; | |
265 | ||
266 | tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen); | |
8d65af78 | 267 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
ce7bc3bf SH |
268 | if (write && ret == 0) |
269 | ret = tcp_set_allowed_congestion_control(tbl.data); | |
270 | kfree(tbl.data); | |
271 | return ret; | |
272 | } | |
273 | ||
aa1236cd JB |
274 | static int sscanf_key(char *buf, __le32 *key) |
275 | { | |
276 | u32 user_key[4]; | |
277 | int i, ret = 0; | |
278 | ||
279 | if (sscanf(buf, "%x-%x-%x-%x", user_key, user_key + 1, | |
280 | user_key + 2, user_key + 3) != 4) { | |
281 | ret = -EINVAL; | |
282 | } else { | |
283 | for (i = 0; i < ARRAY_SIZE(user_key); i++) | |
284 | key[i] = cpu_to_le32(user_key[i]); | |
285 | } | |
286 | pr_debug("proc TFO key set 0x%x-%x-%x-%x <- 0x%s: %u\n", | |
287 | user_key[0], user_key[1], user_key[2], user_key[3], buf, ret); | |
288 | ||
289 | return ret; | |
290 | } | |
291 | ||
43713848 | 292 | static int proc_tcp_fastopen_key(struct ctl_table *table, int write, |
32927393 | 293 | void *buffer, size_t *lenp, loff_t *ppos) |
10467163 | 294 | { |
43713848 HY |
295 | struct net *net = container_of(table->data, struct net, |
296 | ipv4.sysctl_tcp_fastopen); | |
aa1236cd JB |
297 | /* maxlen to print the list of keys in hex (*2), with dashes |
298 | * separating doublewords and a comma in between keys. | |
299 | */ | |
300 | struct ctl_table tbl = { .maxlen = ((TCP_FASTOPEN_KEY_LENGTH * | |
301 | 2 * TCP_FASTOPEN_KEY_MAX) + | |
302 | (TCP_FASTOPEN_KEY_MAX * 5)) }; | |
f19008e6 JB |
303 | u32 user_key[TCP_FASTOPEN_KEY_BUF_LENGTH / sizeof(u32)]; |
304 | __le32 key[TCP_FASTOPEN_KEY_BUF_LENGTH / sizeof(__le32)]; | |
aa1236cd | 305 | char *backup_data; |
f19008e6 | 306 | int ret, i = 0, off = 0, n_keys; |
10467163 JC |
307 | |
308 | tbl.data = kmalloc(tbl.maxlen, GFP_KERNEL); | |
309 | if (!tbl.data) | |
310 | return -ENOMEM; | |
311 | ||
f19008e6 | 312 | n_keys = tcp_fastopen_get_cipher(net, NULL, (u64 *)key); |
aa1236cd JB |
313 | if (!n_keys) { |
314 | memset(&key[0], 0, TCP_FASTOPEN_KEY_LENGTH); | |
315 | n_keys = 1; | |
316 | } | |
317 | ||
318 | for (i = 0; i < n_keys * 4; i++) | |
c860e997 YC |
319 | user_key[i] = le32_to_cpu(key[i]); |
320 | ||
aa1236cd JB |
321 | for (i = 0; i < n_keys; i++) { |
322 | off += snprintf(tbl.data + off, tbl.maxlen - off, | |
323 | "%08x-%08x-%08x-%08x", | |
324 | user_key[i * 4], | |
325 | user_key[i * 4 + 1], | |
326 | user_key[i * 4 + 2], | |
327 | user_key[i * 4 + 3]); | |
9bb59a21 HL |
328 | |
329 | if (WARN_ON_ONCE(off >= tbl.maxlen - 1)) | |
330 | break; | |
331 | ||
aa1236cd JB |
332 | if (i + 1 < n_keys) |
333 | off += snprintf(tbl.data + off, tbl.maxlen - off, ","); | |
334 | } | |
335 | ||
10467163 JC |
336 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); |
337 | ||
338 | if (write && ret == 0) { | |
aa1236cd JB |
339 | backup_data = strchr(tbl.data, ','); |
340 | if (backup_data) { | |
341 | *backup_data = '\0'; | |
342 | backup_data++; | |
343 | } | |
344 | if (sscanf_key(tbl.data, key)) { | |
10467163 JC |
345 | ret = -EINVAL; |
346 | goto bad_key; | |
347 | } | |
aa1236cd JB |
348 | if (backup_data) { |
349 | if (sscanf_key(backup_data, key + 4)) { | |
350 | ret = -EINVAL; | |
351 | goto bad_key; | |
352 | } | |
353 | } | |
354 | tcp_fastopen_reset_cipher(net, NULL, key, | |
438ac880 | 355 | backup_data ? key + 4 : NULL); |
10467163 JC |
356 | } |
357 | ||
358 | bad_key: | |
10467163 JC |
359 | kfree(tbl.data); |
360 | return ret; | |
361 | } | |
362 | ||
dddb64bc | 363 | static void proc_configure_early_demux(int enabled, int protocol) |
364 | { | |
365 | struct net_protocol *ipprot; | |
366 | #if IS_ENABLED(CONFIG_IPV6) | |
367 | struct inet6_protocol *ip6prot; | |
368 | #endif | |
369 | ||
58c4c6a3 DA |
370 | rcu_read_lock(); |
371 | ||
dddb64bc | 372 | ipprot = rcu_dereference(inet_protos[protocol]); |
373 | if (ipprot) | |
374 | ipprot->early_demux = enabled ? ipprot->early_demux_handler : | |
375 | NULL; | |
376 | ||
377 | #if IS_ENABLED(CONFIG_IPV6) | |
378 | ip6prot = rcu_dereference(inet6_protos[protocol]); | |
379 | if (ip6prot) | |
380 | ip6prot->early_demux = enabled ? ip6prot->early_demux_handler : | |
381 | NULL; | |
382 | #endif | |
58c4c6a3 | 383 | rcu_read_unlock(); |
dddb64bc | 384 | } |
385 | ||
386 | static int proc_tcp_early_demux(struct ctl_table *table, int write, | |
32927393 | 387 | void *buffer, size_t *lenp, loff_t *ppos) |
dddb64bc | 388 | { |
389 | int ret = 0; | |
390 | ||
2932bcda | 391 | ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
dddb64bc | 392 | |
393 | if (write && !ret) { | |
394 | int enabled = init_net.ipv4.sysctl_tcp_early_demux; | |
395 | ||
396 | proc_configure_early_demux(enabled, IPPROTO_TCP); | |
397 | } | |
398 | ||
399 | return ret; | |
400 | } | |
401 | ||
402 | static int proc_udp_early_demux(struct ctl_table *table, int write, | |
32927393 | 403 | void *buffer, size_t *lenp, loff_t *ppos) |
dddb64bc | 404 | { |
405 | int ret = 0; | |
406 | ||
2932bcda | 407 | ret = proc_dou8vec_minmax(table, write, buffer, lenp, ppos); |
dddb64bc | 408 | |
409 | if (write && !ret) { | |
410 | int enabled = init_net.ipv4.sysctl_udp_early_demux; | |
411 | ||
412 | proc_configure_early_demux(enabled, IPPROTO_UDP); | |
413 | } | |
414 | ||
415 | return ret; | |
416 | } | |
417 | ||
cf1ef3f0 | 418 | static int proc_tfo_blackhole_detect_timeout(struct ctl_table *table, |
32927393 | 419 | int write, void *buffer, |
cf1ef3f0 WW |
420 | size_t *lenp, loff_t *ppos) |
421 | { | |
3733be14 HY |
422 | struct net *net = container_of(table->data, struct net, |
423 | ipv4.sysctl_tcp_fastopen_blackhole_timeout); | |
cf1ef3f0 WW |
424 | int ret; |
425 | ||
426 | ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
427 | if (write && ret == 0) | |
3733be14 | 428 | atomic_set(&net->ipv4.tfo_active_disable_times, 0); |
734942cc DW |
429 | |
430 | return ret; | |
431 | } | |
432 | ||
433 | static int proc_tcp_available_ulp(struct ctl_table *ctl, | |
32927393 | 434 | int write, void *buffer, size_t *lenp, |
734942cc DW |
435 | loff_t *ppos) |
436 | { | |
437 | struct ctl_table tbl = { .maxlen = TCP_ULP_BUF_MAX, }; | |
438 | int ret; | |
439 | ||
440 | tbl.data = kmalloc(tbl.maxlen, GFP_USER); | |
441 | if (!tbl.data) | |
442 | return -ENOMEM; | |
443 | tcp_get_available_ulp(tbl.data, TCP_ULP_BUF_MAX); | |
444 | ret = proc_dostring(&tbl, write, buffer, lenp, ppos); | |
445 | kfree(tbl.data); | |
446 | ||
cf1ef3f0 WW |
447 | return ret; |
448 | } | |
449 | ||
3ae6ec08 IS |
450 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
451 | static int proc_fib_multipath_hash_policy(struct ctl_table *table, int write, | |
32927393 | 452 | void *buffer, size_t *lenp, |
3ae6ec08 IS |
453 | loff_t *ppos) |
454 | { | |
455 | struct net *net = container_of(table->data, struct net, | |
456 | ipv4.sysctl_fib_multipath_hash_policy); | |
457 | int ret; | |
458 | ||
459 | ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); | |
460 | if (write && ret == 0) | |
3192dac6 | 461 | call_netevent_notifiers(NETEVENT_IPV4_MPATH_HASH_UPDATE, net); |
3ae6ec08 IS |
462 | |
463 | return ret; | |
464 | } | |
465 | #endif | |
466 | ||
3e37c3f9 | 467 | static struct ctl_table ipv4_table[] = { |
1da177e4 | 468 | { |
1da177e4 LT |
469 | .procname = "tcp_max_orphans", |
470 | .data = &sysctl_tcp_max_orphans, | |
471 | .maxlen = sizeof(int), | |
472 | .mode = 0644, | |
6d9f239a | 473 | .proc_handler = proc_dointvec |
1da177e4 | 474 | }, |
1da177e4 | 475 | { |
1da177e4 LT |
476 | .procname = "inet_peer_threshold", |
477 | .data = &inet_peer_threshold, | |
478 | .maxlen = sizeof(int), | |
479 | .mode = 0644, | |
6d9f239a | 480 | .proc_handler = proc_dointvec |
1da177e4 LT |
481 | }, |
482 | { | |
1da177e4 LT |
483 | .procname = "inet_peer_minttl", |
484 | .data = &inet_peer_minttl, | |
485 | .maxlen = sizeof(int), | |
486 | .mode = 0644, | |
6d9f239a | 487 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 LT |
488 | }, |
489 | { | |
1da177e4 LT |
490 | .procname = "inet_peer_maxttl", |
491 | .data = &inet_peer_maxttl, | |
492 | .maxlen = sizeof(int), | |
493 | .mode = 0644, | |
6d9f239a | 494 | .proc_handler = proc_dointvec_jiffies, |
1da177e4 | 495 | }, |
a4fe34bf EB |
496 | { |
497 | .procname = "tcp_mem", | |
498 | .maxlen = sizeof(sysctl_tcp_mem), | |
499 | .data = &sysctl_tcp_mem, | |
500 | .mode = 0644, | |
501 | .proc_handler = proc_doulongvec_minmax, | |
502 | }, | |
1da177e4 | 503 | { |
1da177e4 LT |
504 | .procname = "tcp_low_latency", |
505 | .data = &sysctl_tcp_low_latency, | |
506 | .maxlen = sizeof(int), | |
507 | .mode = 0644, | |
6d9f239a | 508 | .proc_handler = proc_dointvec |
1da177e4 | 509 | }, |
446fda4f PM |
510 | #ifdef CONFIG_NETLABEL |
511 | { | |
446fda4f PM |
512 | .procname = "cipso_cache_enable", |
513 | .data = &cipso_v4_cache_enabled, | |
514 | .maxlen = sizeof(int), | |
515 | .mode = 0644, | |
6d9f239a | 516 | .proc_handler = proc_dointvec, |
446fda4f PM |
517 | }, |
518 | { | |
446fda4f PM |
519 | .procname = "cipso_cache_bucket_size", |
520 | .data = &cipso_v4_cache_bucketsize, | |
521 | .maxlen = sizeof(int), | |
522 | .mode = 0644, | |
6d9f239a | 523 | .proc_handler = proc_dointvec, |
446fda4f PM |
524 | }, |
525 | { | |
446fda4f PM |
526 | .procname = "cipso_rbm_optfmt", |
527 | .data = &cipso_v4_rbm_optfmt, | |
528 | .maxlen = sizeof(int), | |
529 | .mode = 0644, | |
6d9f239a | 530 | .proc_handler = proc_dointvec, |
446fda4f PM |
531 | }, |
532 | { | |
446fda4f PM |
533 | .procname = "cipso_rbm_strictvalid", |
534 | .data = &cipso_v4_rbm_strictvalid, | |
535 | .maxlen = sizeof(int), | |
536 | .mode = 0644, | |
6d9f239a | 537 | .proc_handler = proc_dointvec, |
446fda4f PM |
538 | }, |
539 | #endif /* CONFIG_NETLABEL */ | |
734942cc DW |
540 | { |
541 | .procname = "tcp_available_ulp", | |
542 | .maxlen = TCP_ULP_BUF_MAX, | |
543 | .mode = 0444, | |
544 | .proc_handler = proc_tcp_available_ulp, | |
545 | }, | |
4cdf507d ED |
546 | { |
547 | .procname = "icmp_msgs_per_sec", | |
548 | .data = &sysctl_icmp_msgs_per_sec, | |
549 | .maxlen = sizeof(int), | |
550 | .mode = 0644, | |
551 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 552 | .extra1 = SYSCTL_ZERO, |
4cdf507d ED |
553 | }, |
554 | { | |
555 | .procname = "icmp_msgs_burst", | |
556 | .data = &sysctl_icmp_msgs_burst, | |
557 | .maxlen = sizeof(int), | |
558 | .mode = 0644, | |
559 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 560 | .extra1 = SYSCTL_ZERO, |
4cdf507d | 561 | }, |
95766fff | 562 | { |
95766fff HA |
563 | .procname = "udp_mem", |
564 | .data = &sysctl_udp_mem, | |
565 | .maxlen = sizeof(sysctl_udp_mem), | |
566 | .mode = 0644, | |
8d987e5c | 567 | .proc_handler = proc_doulongvec_minmax, |
95766fff | 568 | }, |
9ab948a9 DA |
569 | { |
570 | .procname = "fib_sync_mem", | |
571 | .data = &sysctl_fib_sync_mem, | |
572 | .maxlen = sizeof(sysctl_fib_sync_mem), | |
573 | .mode = 0644, | |
574 | .proc_handler = proc_douintvec_minmax, | |
575 | .extra1 = &sysctl_fib_sync_mem_min, | |
576 | .extra2 = &sysctl_fib_sync_mem_max, | |
577 | }, | |
ede61ca4 ED |
578 | { |
579 | .procname = "tcp_rx_skb_cache", | |
580 | .data = &tcp_rx_skb_cache_key.key, | |
581 | .mode = 0644, | |
582 | .proc_handler = proc_do_static_key, | |
583 | }, | |
0b7d7f6b ED |
584 | { |
585 | .procname = "tcp_tx_skb_cache", | |
586 | .data = &tcp_tx_skb_cache_key.key, | |
587 | .mode = 0644, | |
588 | .proc_handler = proc_do_static_key, | |
589 | }, | |
f8572d8f | 590 | { } |
1da177e4 | 591 | }; |
3e37c3f9 | 592 | |
68528f09 PE |
593 | static struct ctl_table ipv4_net_table[] = { |
594 | { | |
68528f09 PE |
595 | .procname = "icmp_echo_ignore_all", |
596 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_all, | |
4b6bbf17 | 597 | .maxlen = sizeof(u8), |
68528f09 | 598 | .mode = 0644, |
4b6bbf17 | 599 | .proc_handler = proc_dou8vec_minmax, |
68528f09 | 600 | }, |
f1b8fa9f AR |
601 | { |
602 | .procname = "icmp_echo_enable_probe", | |
603 | .data = &init_net.ipv4.sysctl_icmp_echo_enable_probe, | |
604 | .maxlen = sizeof(int), | |
605 | .mode = 0644, | |
606 | .proc_handler = proc_dointvec_minmax, | |
607 | .extra1 = SYSCTL_ZERO, | |
608 | .extra2 = SYSCTL_ONE | |
609 | }, | |
68528f09 | 610 | { |
68528f09 PE |
611 | .procname = "icmp_echo_ignore_broadcasts", |
612 | .data = &init_net.ipv4.sysctl_icmp_echo_ignore_broadcasts, | |
4b6bbf17 | 613 | .maxlen = sizeof(u8), |
68528f09 | 614 | .mode = 0644, |
4b6bbf17 | 615 | .proc_handler = proc_dou8vec_minmax, |
68528f09 PE |
616 | }, |
617 | { | |
68528f09 PE |
618 | .procname = "icmp_ignore_bogus_error_responses", |
619 | .data = &init_net.ipv4.sysctl_icmp_ignore_bogus_error_responses, | |
4b6bbf17 | 620 | .maxlen = sizeof(u8), |
68528f09 | 621 | .mode = 0644, |
4b6bbf17 | 622 | .proc_handler = proc_dou8vec_minmax, |
68528f09 PE |
623 | }, |
624 | { | |
68528f09 PE |
625 | .procname = "icmp_errors_use_inbound_ifaddr", |
626 | .data = &init_net.ipv4.sysctl_icmp_errors_use_inbound_ifaddr, | |
4b6bbf17 | 627 | .maxlen = sizeof(u8), |
68528f09 | 628 | .mode = 0644, |
4b6bbf17 | 629 | .proc_handler = proc_dou8vec_minmax, |
68528f09 PE |
630 | }, |
631 | { | |
68528f09 PE |
632 | .procname = "icmp_ratelimit", |
633 | .data = &init_net.ipv4.sysctl_icmp_ratelimit, | |
634 | .maxlen = sizeof(int), | |
635 | .mode = 0644, | |
6d9f239a | 636 | .proc_handler = proc_dointvec_ms_jiffies, |
68528f09 PE |
637 | }, |
638 | { | |
68528f09 PE |
639 | .procname = "icmp_ratemask", |
640 | .data = &init_net.ipv4.sysctl_icmp_ratemask, | |
641 | .maxlen = sizeof(int), | |
642 | .mode = 0644, | |
6d9f239a | 643 | .proc_handler = proc_dointvec |
68528f09 | 644 | }, |
c319b4d7 VK |
645 | { |
646 | .procname = "ping_group_range", | |
ba6b918a | 647 | .data = &init_net.ipv4.ping_group_range.range, |
7064d16e | 648 | .maxlen = sizeof(gid_t)*2, |
c319b4d7 VK |
649 | .mode = 0644, |
650 | .proc_handler = ipv4_ping_group_range, | |
651 | }, | |
6897445f MM |
652 | #ifdef CONFIG_NET_L3_MASTER_DEV |
653 | { | |
654 | .procname = "raw_l3mdev_accept", | |
655 | .data = &init_net.ipv4.sysctl_raw_l3mdev_accept, | |
4b6bbf17 | 656 | .maxlen = sizeof(u8), |
6897445f | 657 | .mode = 0644, |
4b6bbf17 | 658 | .proc_handler = proc_dou8vec_minmax, |
eec4844f MC |
659 | .extra1 = SYSCTL_ZERO, |
660 | .extra2 = SYSCTL_ONE, | |
6897445f MM |
661 | }, |
662 | #endif | |
5d134f1c HFS |
663 | { |
664 | .procname = "tcp_ecn", | |
665 | .data = &init_net.ipv4.sysctl_tcp_ecn, | |
4b6bbf17 | 666 | .maxlen = sizeof(u8), |
5d134f1c | 667 | .mode = 0644, |
4b6bbf17 | 668 | .proc_handler = proc_dou8vec_minmax, |
5d134f1c | 669 | }, |
49213555 DB |
670 | { |
671 | .procname = "tcp_ecn_fallback", | |
672 | .data = &init_net.ipv4.sysctl_tcp_ecn_fallback, | |
4b6bbf17 | 673 | .maxlen = sizeof(u8), |
49213555 | 674 | .mode = 0644, |
4b6bbf17 | 675 | .proc_handler = proc_dou8vec_minmax, |
49213555 | 676 | }, |
287b7f38 NB |
677 | { |
678 | .procname = "ip_dynaddr", | |
679 | .data = &init_net.ipv4.sysctl_ip_dynaddr, | |
4b6bbf17 | 680 | .maxlen = sizeof(u8), |
287b7f38 | 681 | .mode = 0644, |
4b6bbf17 | 682 | .proc_handler = proc_dou8vec_minmax, |
287b7f38 | 683 | }, |
e21145a9 NB |
684 | { |
685 | .procname = "ip_early_demux", | |
686 | .data = &init_net.ipv4.sysctl_ip_early_demux, | |
4b6bbf17 | 687 | .maxlen = sizeof(u8), |
e21145a9 | 688 | .mode = 0644, |
4b6bbf17 | 689 | .proc_handler = proc_dou8vec_minmax, |
e21145a9 | 690 | }, |
dddb64bc | 691 | { |
692 | .procname = "udp_early_demux", | |
693 | .data = &init_net.ipv4.sysctl_udp_early_demux, | |
2932bcda | 694 | .maxlen = sizeof(u8), |
dddb64bc | 695 | .mode = 0644, |
696 | .proc_handler = proc_udp_early_demux | |
697 | }, | |
698 | { | |
699 | .procname = "tcp_early_demux", | |
700 | .data = &init_net.ipv4.sysctl_tcp_early_demux, | |
2932bcda | 701 | .maxlen = sizeof(u8), |
dddb64bc | 702 | .mode = 0644, |
703 | .proc_handler = proc_tcp_early_demux | |
704 | }, | |
4f80116d RP |
705 | { |
706 | .procname = "nexthop_compat_mode", | |
707 | .data = &init_net.ipv4.sysctl_nexthop_compat_mode, | |
4b6bbf17 | 708 | .maxlen = sizeof(u8), |
4f80116d | 709 | .mode = 0644, |
4b6bbf17 | 710 | .proc_handler = proc_dou8vec_minmax, |
4f80116d RP |
711 | .extra1 = SYSCTL_ZERO, |
712 | .extra2 = SYSCTL_ONE, | |
713 | }, | |
fa50d974 NB |
714 | { |
715 | .procname = "ip_default_ttl", | |
716 | .data = &init_net.ipv4.sysctl_ip_default_ttl, | |
4b6bbf17 | 717 | .maxlen = sizeof(u8), |
fa50d974 | 718 | .mode = 0644, |
4b6bbf17 | 719 | .proc_handler = proc_dou8vec_minmax, |
fa50d974 NB |
720 | .extra1 = &ip_ttl_min, |
721 | .extra2 = &ip_ttl_max, | |
722 | }, | |
0bbf87d8 EB |
723 | { |
724 | .procname = "ip_local_port_range", | |
c9d8f1a6 CW |
725 | .maxlen = sizeof(init_net.ipv4.ip_local_ports.range), |
726 | .data = &init_net.ipv4.ip_local_ports.range, | |
0bbf87d8 EB |
727 | .mode = 0644, |
728 | .proc_handler = ipv4_local_port_range, | |
729 | }, | |
122ff243 WC |
730 | { |
731 | .procname = "ip_local_reserved_ports", | |
732 | .data = &init_net.ipv4.sysctl_local_reserved_ports, | |
733 | .maxlen = 65536, | |
734 | .mode = 0644, | |
735 | .proc_handler = proc_do_large_bitmap, | |
736 | }, | |
974eda11 HFS |
737 | { |
738 | .procname = "ip_no_pmtu_disc", | |
739 | .data = &init_net.ipv4.sysctl_ip_no_pmtu_disc, | |
4b6bbf17 | 740 | .maxlen = sizeof(u8), |
974eda11 | 741 | .mode = 0644, |
4b6bbf17 | 742 | .proc_handler = proc_dou8vec_minmax, |
974eda11 | 743 | }, |
f87c10a8 HFS |
744 | { |
745 | .procname = "ip_forward_use_pmtu", | |
746 | .data = &init_net.ipv4.sysctl_ip_fwd_use_pmtu, | |
4b6bbf17 | 747 | .maxlen = sizeof(u8), |
f87c10a8 | 748 | .mode = 0644, |
4b6bbf17 | 749 | .proc_handler = proc_dou8vec_minmax, |
f87c10a8 | 750 | }, |
432e05d3 PM |
751 | { |
752 | .procname = "ip_forward_update_priority", | |
753 | .data = &init_net.ipv4.sysctl_ip_fwd_update_priority, | |
1c69dedc | 754 | .maxlen = sizeof(u8), |
432e05d3 | 755 | .mode = 0644, |
d18c5d19 | 756 | .proc_handler = ipv4_fwd_update_priority, |
eec4844f MC |
757 | .extra1 = SYSCTL_ZERO, |
758 | .extra2 = SYSCTL_ONE, | |
432e05d3 | 759 | }, |
49a60158 VB |
760 | { |
761 | .procname = "ip_nonlocal_bind", | |
762 | .data = &init_net.ipv4.sysctl_ip_nonlocal_bind, | |
4b6bbf17 | 763 | .maxlen = sizeof(u8), |
49a60158 | 764 | .mode = 0644, |
4b6bbf17 | 765 | .proc_handler = proc_dou8vec_minmax, |
49a60158 | 766 | }, |
4b01a967 KI |
767 | { |
768 | .procname = "ip_autobind_reuse", | |
769 | .data = &init_net.ipv4.sysctl_ip_autobind_reuse, | |
4b6bbf17 | 770 | .maxlen = sizeof(u8), |
4b01a967 | 771 | .mode = 0644, |
4b6bbf17 | 772 | .proc_handler = proc_dou8vec_minmax, |
4b01a967 KI |
773 | .extra1 = SYSCTL_ZERO, |
774 | .extra2 = SYSCTL_ONE, | |
775 | }, | |
e110861f LC |
776 | { |
777 | .procname = "fwmark_reflect", | |
778 | .data = &init_net.ipv4.sysctl_fwmark_reflect, | |
4b6bbf17 | 779 | .maxlen = sizeof(u8), |
e110861f | 780 | .mode = 0644, |
4b6bbf17 | 781 | .proc_handler = proc_dou8vec_minmax, |
e110861f | 782 | }, |
84f39b08 LC |
783 | { |
784 | .procname = "tcp_fwmark_accept", | |
785 | .data = &init_net.ipv4.sysctl_tcp_fwmark_accept, | |
4ecc1baf | 786 | .maxlen = sizeof(u8), |
84f39b08 | 787 | .mode = 0644, |
4ecc1baf | 788 | .proc_handler = proc_dou8vec_minmax, |
84f39b08 | 789 | }, |
6dd9a14e DA |
790 | #ifdef CONFIG_NET_L3_MASTER_DEV |
791 | { | |
792 | .procname = "tcp_l3mdev_accept", | |
793 | .data = &init_net.ipv4.sysctl_tcp_l3mdev_accept, | |
4ecc1baf | 794 | .maxlen = sizeof(u8), |
6dd9a14e | 795 | .mode = 0644, |
4ecc1baf | 796 | .proc_handler = proc_dou8vec_minmax, |
eec4844f MC |
797 | .extra1 = SYSCTL_ZERO, |
798 | .extra2 = SYSCTL_ONE, | |
6dd9a14e DA |
799 | }, |
800 | #endif | |
b0f9ca53 FD |
801 | { |
802 | .procname = "tcp_mtu_probing", | |
803 | .data = &init_net.ipv4.sysctl_tcp_mtu_probing, | |
4ecc1baf | 804 | .maxlen = sizeof(u8), |
b0f9ca53 | 805 | .mode = 0644, |
4ecc1baf | 806 | .proc_handler = proc_dou8vec_minmax, |
b0f9ca53 FD |
807 | }, |
808 | { | |
809 | .procname = "tcp_base_mss", | |
810 | .data = &init_net.ipv4.sysctl_tcp_base_mss, | |
811 | .maxlen = sizeof(int), | |
812 | .mode = 0644, | |
813 | .proc_handler = proc_dointvec, | |
814 | }, | |
5f3e2bf0 ED |
815 | { |
816 | .procname = "tcp_min_snd_mss", | |
817 | .data = &init_net.ipv4.sysctl_tcp_min_snd_mss, | |
818 | .maxlen = sizeof(int), | |
819 | .mode = 0644, | |
820 | .proc_handler = proc_dointvec_minmax, | |
821 | .extra1 = &tcp_min_snd_mss_min, | |
822 | .extra2 = &tcp_min_snd_mss_max, | |
823 | }, | |
c04b79b6 JH |
824 | { |
825 | .procname = "tcp_mtu_probe_floor", | |
826 | .data = &init_net.ipv4.sysctl_tcp_mtu_probe_floor, | |
827 | .maxlen = sizeof(int), | |
828 | .mode = 0644, | |
829 | .proc_handler = proc_dointvec_minmax, | |
830 | .extra1 = &tcp_min_snd_mss_min, | |
831 | .extra2 = &tcp_min_snd_mss_max, | |
832 | }, | |
6b58e0a5 FD |
833 | { |
834 | .procname = "tcp_probe_threshold", | |
835 | .data = &init_net.ipv4.sysctl_tcp_probe_threshold, | |
836 | .maxlen = sizeof(int), | |
837 | .mode = 0644, | |
838 | .proc_handler = proc_dointvec, | |
839 | }, | |
05cbc0db FD |
840 | { |
841 | .procname = "tcp_probe_interval", | |
842 | .data = &init_net.ipv4.sysctl_tcp_probe_interval, | |
d4ce5808 | 843 | .maxlen = sizeof(u32), |
05cbc0db | 844 | .mode = 0644, |
d4ce5808 MŻ |
845 | .proc_handler = proc_douintvec_minmax, |
846 | .extra2 = &u32_max_div_HZ, | |
05cbc0db | 847 | }, |
df2cf4a7 PD |
848 | { |
849 | .procname = "igmp_link_local_mcast_reports", | |
87a8a2ae | 850 | .data = &init_net.ipv4.sysctl_igmp_llm_reports, |
df2cf4a7 PD |
851 | .maxlen = sizeof(int), |
852 | .mode = 0644, | |
853 | .proc_handler = proc_dointvec | |
854 | }, | |
815c5270 NB |
855 | { |
856 | .procname = "igmp_max_memberships", | |
857 | .data = &init_net.ipv4.sysctl_igmp_max_memberships, | |
858 | .maxlen = sizeof(int), | |
859 | .mode = 0644, | |
860 | .proc_handler = proc_dointvec | |
861 | }, | |
166b6b2d NB |
862 | { |
863 | .procname = "igmp_max_msf", | |
864 | .data = &init_net.ipv4.sysctl_igmp_max_msf, | |
865 | .maxlen = sizeof(int), | |
866 | .mode = 0644, | |
867 | .proc_handler = proc_dointvec | |
868 | }, | |
165094af NB |
869 | #ifdef CONFIG_IP_MULTICAST |
870 | { | |
871 | .procname = "igmp_qrv", | |
872 | .data = &init_net.ipv4.sysctl_igmp_qrv, | |
873 | .maxlen = sizeof(int), | |
874 | .mode = 0644, | |
875 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 876 | .extra1 = SYSCTL_ONE |
165094af NB |
877 | }, |
878 | #endif | |
6670e152 SH |
879 | { |
880 | .procname = "tcp_congestion_control", | |
881 | .data = &init_net.ipv4.tcp_congestion_control, | |
882 | .mode = 0644, | |
883 | .maxlen = TCP_CA_NAME_MAX, | |
884 | .proc_handler = proc_tcp_congestion_control, | |
885 | }, | |
9cb8e048 CB |
886 | { |
887 | .procname = "tcp_available_congestion_control", | |
888 | .maxlen = TCP_CA_BUF_MAX, | |
889 | .mode = 0444, | |
890 | .proc_handler = proc_tcp_available_congestion_control, | |
891 | }, | |
892 | { | |
893 | .procname = "tcp_allowed_congestion_control", | |
894 | .maxlen = TCP_CA_BUF_MAX, | |
895 | .mode = 0644, | |
896 | .proc_handler = proc_allowed_congestion_control, | |
897 | }, | |
13b287e8 NB |
898 | { |
899 | .procname = "tcp_keepalive_time", | |
900 | .data = &init_net.ipv4.sysctl_tcp_keepalive_time, | |
901 | .maxlen = sizeof(int), | |
902 | .mode = 0644, | |
903 | .proc_handler = proc_dointvec_jiffies, | |
904 | }, | |
9bd6861b NB |
905 | { |
906 | .procname = "tcp_keepalive_probes", | |
907 | .data = &init_net.ipv4.sysctl_tcp_keepalive_probes, | |
4ecc1baf | 908 | .maxlen = sizeof(u8), |
9bd6861b | 909 | .mode = 0644, |
4ecc1baf | 910 | .proc_handler = proc_dou8vec_minmax, |
9bd6861b | 911 | }, |
b840d15d NB |
912 | { |
913 | .procname = "tcp_keepalive_intvl", | |
914 | .data = &init_net.ipv4.sysctl_tcp_keepalive_intvl, | |
915 | .maxlen = sizeof(int), | |
916 | .mode = 0644, | |
917 | .proc_handler = proc_dointvec_jiffies, | |
918 | }, | |
6fa25166 NB |
919 | { |
920 | .procname = "tcp_syn_retries", | |
921 | .data = &init_net.ipv4.sysctl_tcp_syn_retries, | |
4ecc1baf | 922 | .maxlen = sizeof(u8), |
6fa25166 | 923 | .mode = 0644, |
4ecc1baf | 924 | .proc_handler = proc_dou8vec_minmax, |
6fa25166 NB |
925 | .extra1 = &tcp_syn_retries_min, |
926 | .extra2 = &tcp_syn_retries_max | |
927 | }, | |
7c083ecb NB |
928 | { |
929 | .procname = "tcp_synack_retries", | |
930 | .data = &init_net.ipv4.sysctl_tcp_synack_retries, | |
4ecc1baf | 931 | .maxlen = sizeof(u8), |
7c083ecb | 932 | .mode = 0644, |
4ecc1baf | 933 | .proc_handler = proc_dou8vec_minmax, |
7c083ecb | 934 | }, |
12ed8244 NB |
935 | #ifdef CONFIG_SYN_COOKIES |
936 | { | |
937 | .procname = "tcp_syncookies", | |
938 | .data = &init_net.ipv4.sysctl_tcp_syncookies, | |
4ecc1baf | 939 | .maxlen = sizeof(u8), |
12ed8244 | 940 | .mode = 0644, |
4ecc1baf | 941 | .proc_handler = proc_dou8vec_minmax, |
12ed8244 NB |
942 | }, |
943 | #endif | |
1043e25f NB |
944 | { |
945 | .procname = "tcp_reordering", | |
946 | .data = &init_net.ipv4.sysctl_tcp_reordering, | |
947 | .maxlen = sizeof(int), | |
948 | .mode = 0644, | |
949 | .proc_handler = proc_dointvec | |
950 | }, | |
ae5c3f40 NB |
951 | { |
952 | .procname = "tcp_retries1", | |
953 | .data = &init_net.ipv4.sysctl_tcp_retries1, | |
4ecc1baf | 954 | .maxlen = sizeof(u8), |
ae5c3f40 | 955 | .mode = 0644, |
4ecc1baf | 956 | .proc_handler = proc_dou8vec_minmax, |
ae5c3f40 NB |
957 | .extra2 = &tcp_retr1_max |
958 | }, | |
c6214a97 NB |
959 | { |
960 | .procname = "tcp_retries2", | |
961 | .data = &init_net.ipv4.sysctl_tcp_retries2, | |
4ecc1baf | 962 | .maxlen = sizeof(u8), |
c6214a97 | 963 | .mode = 0644, |
4ecc1baf | 964 | .proc_handler = proc_dou8vec_minmax, |
c6214a97 | 965 | }, |
c402d9be NB |
966 | { |
967 | .procname = "tcp_orphan_retries", | |
968 | .data = &init_net.ipv4.sysctl_tcp_orphan_retries, | |
4ecc1baf | 969 | .maxlen = sizeof(u8), |
c402d9be | 970 | .mode = 0644, |
4ecc1baf | 971 | .proc_handler = proc_dou8vec_minmax, |
c402d9be | 972 | }, |
1e579caa NB |
973 | { |
974 | .procname = "tcp_fin_timeout", | |
975 | .data = &init_net.ipv4.sysctl_tcp_fin_timeout, | |
976 | .maxlen = sizeof(int), | |
977 | .mode = 0644, | |
978 | .proc_handler = proc_dointvec_jiffies, | |
979 | }, | |
4979f2d9 NB |
980 | { |
981 | .procname = "tcp_notsent_lowat", | |
982 | .data = &init_net.ipv4.sysctl_tcp_notsent_lowat, | |
983 | .maxlen = sizeof(unsigned int), | |
984 | .mode = 0644, | |
b007f090 | 985 | .proc_handler = proc_douintvec, |
4979f2d9 | 986 | }, |
56ab6b93 HY |
987 | { |
988 | .procname = "tcp_tw_reuse", | |
989 | .data = &init_net.ipv4.sysctl_tcp_tw_reuse, | |
4ecc1baf | 990 | .maxlen = sizeof(u8), |
56ab6b93 | 991 | .mode = 0644, |
4ecc1baf | 992 | .proc_handler = proc_dou8vec_minmax, |
eec4844f | 993 | .extra1 = SYSCTL_ZERO, |
79e9fed4 | 994 | .extra2 = &two, |
56ab6b93 | 995 | }, |
1946e672 HY |
996 | { |
997 | .procname = "tcp_max_tw_buckets", | |
998 | .data = &init_net.ipv4.tcp_death_row.sysctl_max_tw_buckets, | |
999 | .maxlen = sizeof(int), | |
1000 | .mode = 0644, | |
1001 | .proc_handler = proc_dointvec | |
1002 | }, | |
fee83d09 HY |
1003 | { |
1004 | .procname = "tcp_max_syn_backlog", | |
1005 | .data = &init_net.ipv4.sysctl_max_syn_backlog, | |
1006 | .maxlen = sizeof(int), | |
1007 | .mode = 0644, | |
1008 | .proc_handler = proc_dointvec | |
1009 | }, | |
e1cfcbe8 HY |
1010 | { |
1011 | .procname = "tcp_fastopen", | |
1012 | .data = &init_net.ipv4.sysctl_tcp_fastopen, | |
1013 | .maxlen = sizeof(int), | |
1014 | .mode = 0644, | |
1015 | .proc_handler = proc_dointvec, | |
1016 | }, | |
43713848 HY |
1017 | { |
1018 | .procname = "tcp_fastopen_key", | |
1019 | .mode = 0600, | |
1020 | .data = &init_net.ipv4.sysctl_tcp_fastopen, | |
aa1236cd JB |
1021 | /* maxlen to print the list of keys in hex (*2), with dashes |
1022 | * separating doublewords and a comma in between keys. | |
1023 | */ | |
1024 | .maxlen = ((TCP_FASTOPEN_KEY_LENGTH * | |
1025 | 2 * TCP_FASTOPEN_KEY_MAX) + | |
1026 | (TCP_FASTOPEN_KEY_MAX * 5)), | |
43713848 HY |
1027 | .proc_handler = proc_tcp_fastopen_key, |
1028 | }, | |
3733be14 HY |
1029 | { |
1030 | .procname = "tcp_fastopen_blackhole_timeout_sec", | |
1031 | .data = &init_net.ipv4.sysctl_tcp_fastopen_blackhole_timeout, | |
1032 | .maxlen = sizeof(int), | |
1033 | .mode = 0644, | |
1034 | .proc_handler = proc_tfo_blackhole_detect_timeout, | |
eec4844f | 1035 | .extra1 = SYSCTL_ZERO, |
3733be14 | 1036 | }, |
a6db4494 DA |
1037 | #ifdef CONFIG_IP_ROUTE_MULTIPATH |
1038 | { | |
1039 | .procname = "fib_multipath_use_neigh", | |
1040 | .data = &init_net.ipv4.sysctl_fib_multipath_use_neigh, | |
1041 | .maxlen = sizeof(int), | |
1042 | .mode = 0644, | |
1043 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1044 | .extra1 = SYSCTL_ZERO, |
1045 | .extra2 = SYSCTL_ONE, | |
bf4e0a3d NA |
1046 | }, |
1047 | { | |
1048 | .procname = "fib_multipath_hash_policy", | |
1049 | .data = &init_net.ipv4.sysctl_fib_multipath_hash_policy, | |
1050 | .maxlen = sizeof(int), | |
1051 | .mode = 0644, | |
3ae6ec08 | 1052 | .proc_handler = proc_fib_multipath_hash_policy, |
eec4844f | 1053 | .extra1 = SYSCTL_ZERO, |
ca749bbb | 1054 | .extra2 = &two, |
a6db4494 DA |
1055 | }, |
1056 | #endif | |
4548b683 KJ |
1057 | { |
1058 | .procname = "ip_unprivileged_port_start", | |
1059 | .maxlen = sizeof(int), | |
1060 | .data = &init_net.ipv4.sysctl_ip_prot_sock, | |
1061 | .mode = 0644, | |
1062 | .proc_handler = ipv4_privileged_ports, | |
1063 | }, | |
63a6fff3 RS |
1064 | #ifdef CONFIG_NET_L3_MASTER_DEV |
1065 | { | |
1066 | .procname = "udp_l3mdev_accept", | |
1067 | .data = &init_net.ipv4.sysctl_udp_l3mdev_accept, | |
1068 | .maxlen = sizeof(int), | |
1069 | .mode = 0644, | |
1070 | .proc_handler = proc_dointvec_minmax, | |
eec4844f MC |
1071 | .extra1 = SYSCTL_ZERO, |
1072 | .extra2 = SYSCTL_ONE, | |
63a6fff3 RS |
1073 | }, |
1074 | #endif | |
f9301034 ED |
1075 | { |
1076 | .procname = "tcp_sack", | |
1077 | .data = &init_net.ipv4.sysctl_tcp_sack, | |
4ecc1baf | 1078 | .maxlen = sizeof(u8), |
f9301034 | 1079 | .mode = 0644, |
4ecc1baf | 1080 | .proc_handler = proc_dou8vec_minmax, |
f9301034 | 1081 | }, |
9bb37ef0 ED |
1082 | { |
1083 | .procname = "tcp_window_scaling", | |
1084 | .data = &init_net.ipv4.sysctl_tcp_window_scaling, | |
4ecc1baf | 1085 | .maxlen = sizeof(u8), |
9bb37ef0 | 1086 | .mode = 0644, |
4ecc1baf | 1087 | .proc_handler = proc_dou8vec_minmax, |
9bb37ef0 | 1088 | }, |
5d2ed052 ED |
1089 | { |
1090 | .procname = "tcp_timestamps", | |
1091 | .data = &init_net.ipv4.sysctl_tcp_timestamps, | |
4ecc1baf | 1092 | .maxlen = sizeof(u8), |
5d2ed052 | 1093 | .mode = 0644, |
4ecc1baf | 1094 | .proc_handler = proc_dou8vec_minmax, |
5d2ed052 | 1095 | }, |
2ae21cf5 ED |
1096 | { |
1097 | .procname = "tcp_early_retrans", | |
1098 | .data = &init_net.ipv4.sysctl_tcp_early_retrans, | |
4ecc1baf | 1099 | .maxlen = sizeof(u8), |
2ae21cf5 | 1100 | .mode = 0644, |
4ecc1baf | 1101 | .proc_handler = proc_dou8vec_minmax, |
eec4844f | 1102 | .extra1 = SYSCTL_ZERO, |
2ae21cf5 ED |
1103 | .extra2 = &four, |
1104 | }, | |
e20223f1 ED |
1105 | { |
1106 | .procname = "tcp_recovery", | |
1107 | .data = &init_net.ipv4.sysctl_tcp_recovery, | |
4ecc1baf | 1108 | .maxlen = sizeof(u8), |
e20223f1 | 1109 | .mode = 0644, |
4ecc1baf | 1110 | .proc_handler = proc_dou8vec_minmax, |
e20223f1 | 1111 | }, |
2c04ac8a ED |
1112 | { |
1113 | .procname = "tcp_thin_linear_timeouts", | |
1114 | .data = &init_net.ipv4.sysctl_tcp_thin_linear_timeouts, | |
4ecc1baf | 1115 | .maxlen = sizeof(u8), |
2c04ac8a | 1116 | .mode = 0644, |
4ecc1baf | 1117 | .proc_handler = proc_dou8vec_minmax, |
2c04ac8a | 1118 | }, |
b510f0d2 ED |
1119 | { |
1120 | .procname = "tcp_slow_start_after_idle", | |
1121 | .data = &init_net.ipv4.sysctl_tcp_slow_start_after_idle, | |
4ecc1baf | 1122 | .maxlen = sizeof(u8), |
b510f0d2 | 1123 | .mode = 0644, |
4ecc1baf | 1124 | .proc_handler = proc_dou8vec_minmax, |
b510f0d2 | 1125 | }, |
e0a1e5b5 ED |
1126 | { |
1127 | .procname = "tcp_retrans_collapse", | |
1128 | .data = &init_net.ipv4.sysctl_tcp_retrans_collapse, | |
4ecc1baf | 1129 | .maxlen = sizeof(u8), |
e0a1e5b5 | 1130 | .mode = 0644, |
4ecc1baf | 1131 | .proc_handler = proc_dou8vec_minmax, |
e0a1e5b5 | 1132 | }, |
3f4c7c6f ED |
1133 | { |
1134 | .procname = "tcp_stdurg", | |
1135 | .data = &init_net.ipv4.sysctl_tcp_stdurg, | |
4ecc1baf | 1136 | .maxlen = sizeof(u8), |
3f4c7c6f | 1137 | .mode = 0644, |
4ecc1baf | 1138 | .proc_handler = proc_dou8vec_minmax, |
3f4c7c6f | 1139 | }, |
625357aa ED |
1140 | { |
1141 | .procname = "tcp_rfc1337", | |
1142 | .data = &init_net.ipv4.sysctl_tcp_rfc1337, | |
4ecc1baf | 1143 | .maxlen = sizeof(u8), |
625357aa | 1144 | .mode = 0644, |
4ecc1baf | 1145 | .proc_handler = proc_dou8vec_minmax, |
625357aa | 1146 | }, |
65c9410c ED |
1147 | { |
1148 | .procname = "tcp_abort_on_overflow", | |
1149 | .data = &init_net.ipv4.sysctl_tcp_abort_on_overflow, | |
4ecc1baf | 1150 | .maxlen = sizeof(u8), |
65c9410c | 1151 | .mode = 0644, |
4ecc1baf | 1152 | .proc_handler = proc_dou8vec_minmax, |
65c9410c | 1153 | }, |
0bc65a28 ED |
1154 | { |
1155 | .procname = "tcp_fack", | |
1156 | .data = &init_net.ipv4.sysctl_tcp_fack, | |
4ecc1baf | 1157 | .maxlen = sizeof(u8), |
0bc65a28 | 1158 | .mode = 0644, |
4ecc1baf | 1159 | .proc_handler = proc_dou8vec_minmax, |
0bc65a28 | 1160 | }, |
c6e21803 ED |
1161 | { |
1162 | .procname = "tcp_max_reordering", | |
1163 | .data = &init_net.ipv4.sysctl_tcp_max_reordering, | |
1164 | .maxlen = sizeof(int), | |
1165 | .mode = 0644, | |
1166 | .proc_handler = proc_dointvec | |
1167 | }, | |
6496f6bd ED |
1168 | { |
1169 | .procname = "tcp_dsack", | |
1170 | .data = &init_net.ipv4.sysctl_tcp_dsack, | |
4ecc1baf | 1171 | .maxlen = sizeof(u8), |
6496f6bd | 1172 | .mode = 0644, |
4ecc1baf | 1173 | .proc_handler = proc_dou8vec_minmax, |
6496f6bd | 1174 | }, |
0c12654a ED |
1175 | { |
1176 | .procname = "tcp_app_win", | |
1177 | .data = &init_net.ipv4.sysctl_tcp_app_win, | |
4ecc1baf | 1178 | .maxlen = sizeof(u8), |
0c12654a | 1179 | .mode = 0644, |
4ecc1baf | 1180 | .proc_handler = proc_dou8vec_minmax, |
0c12654a | 1181 | }, |
94f0893e ED |
1182 | { |
1183 | .procname = "tcp_adv_win_scale", | |
1184 | .data = &init_net.ipv4.sysctl_tcp_adv_win_scale, | |
1185 | .maxlen = sizeof(int), | |
1186 | .mode = 0644, | |
1187 | .proc_handler = proc_dointvec_minmax, | |
1188 | .extra1 = &tcp_adv_win_scale_min, | |
1189 | .extra2 = &tcp_adv_win_scale_max, | |
1190 | }, | |
af9b69a7 ED |
1191 | { |
1192 | .procname = "tcp_frto", | |
1193 | .data = &init_net.ipv4.sysctl_tcp_frto, | |
4ecc1baf | 1194 | .maxlen = sizeof(u8), |
af9b69a7 | 1195 | .mode = 0644, |
4ecc1baf | 1196 | .proc_handler = proc_dou8vec_minmax, |
af9b69a7 | 1197 | }, |
ec36e416 ED |
1198 | { |
1199 | .procname = "tcp_no_metrics_save", | |
1200 | .data = &init_net.ipv4.sysctl_tcp_nometrics_save, | |
4ecc1baf | 1201 | .maxlen = sizeof(u8), |
ec36e416 | 1202 | .mode = 0644, |
4ecc1baf | 1203 | .proc_handler = proc_dou8vec_minmax, |
ec36e416 | 1204 | }, |
65e6d901 KYY |
1205 | { |
1206 | .procname = "tcp_no_ssthresh_metrics_save", | |
1207 | .data = &init_net.ipv4.sysctl_tcp_no_ssthresh_metrics_save, | |
4ecc1baf | 1208 | .maxlen = sizeof(u8), |
65e6d901 | 1209 | .mode = 0644, |
4ecc1baf | 1210 | .proc_handler = proc_dou8vec_minmax, |
65e6d901 KYY |
1211 | .extra1 = SYSCTL_ZERO, |
1212 | .extra2 = SYSCTL_ONE, | |
1213 | }, | |
4540c0cf ED |
1214 | { |
1215 | .procname = "tcp_moderate_rcvbuf", | |
1216 | .data = &init_net.ipv4.sysctl_tcp_moderate_rcvbuf, | |
4ecc1baf | 1217 | .maxlen = sizeof(u8), |
4540c0cf | 1218 | .mode = 0644, |
4ecc1baf | 1219 | .proc_handler = proc_dou8vec_minmax, |
4540c0cf | 1220 | }, |
d06a9904 ED |
1221 | { |
1222 | .procname = "tcp_tso_win_divisor", | |
1223 | .data = &init_net.ipv4.sysctl_tcp_tso_win_divisor, | |
4ecc1baf | 1224 | .maxlen = sizeof(u8), |
d06a9904 | 1225 | .mode = 0644, |
4ecc1baf | 1226 | .proc_handler = proc_dou8vec_minmax, |
d06a9904 | 1227 | }, |
ceef9ab6 ED |
1228 | { |
1229 | .procname = "tcp_workaround_signed_windows", | |
1230 | .data = &init_net.ipv4.sysctl_tcp_workaround_signed_windows, | |
4ecc1baf | 1231 | .maxlen = sizeof(u8), |
ceef9ab6 | 1232 | .mode = 0644, |
4ecc1baf | 1233 | .proc_handler = proc_dou8vec_minmax, |
ceef9ab6 | 1234 | }, |
9184d8bb ED |
1235 | { |
1236 | .procname = "tcp_limit_output_bytes", | |
1237 | .data = &init_net.ipv4.sysctl_tcp_limit_output_bytes, | |
1238 | .maxlen = sizeof(int), | |
1239 | .mode = 0644, | |
1240 | .proc_handler = proc_dointvec | |
1241 | }, | |
b530b681 ED |
1242 | { |
1243 | .procname = "tcp_challenge_ack_limit", | |
1244 | .data = &init_net.ipv4.sysctl_tcp_challenge_ack_limit, | |
1245 | .maxlen = sizeof(int), | |
1246 | .mode = 0644, | |
1247 | .proc_handler = proc_dointvec | |
1248 | }, | |
26e9596e ED |
1249 | { |
1250 | .procname = "tcp_min_tso_segs", | |
1251 | .data = &init_net.ipv4.sysctl_tcp_min_tso_segs, | |
4ecc1baf | 1252 | .maxlen = sizeof(u8), |
26e9596e | 1253 | .mode = 0644, |
4ecc1baf | 1254 | .proc_handler = proc_dou8vec_minmax, |
eec4844f | 1255 | .extra1 = SYSCTL_ONE, |
26e9596e | 1256 | }, |
bd239704 ED |
1257 | { |
1258 | .procname = "tcp_min_rtt_wlen", | |
1259 | .data = &init_net.ipv4.sysctl_tcp_min_rtt_wlen, | |
1260 | .maxlen = sizeof(int), | |
1261 | .mode = 0644, | |
19fad20d | 1262 | .proc_handler = proc_dointvec_minmax, |
eec4844f | 1263 | .extra1 = SYSCTL_ZERO, |
19fad20d | 1264 | .extra2 = &one_day_secs |
bd239704 | 1265 | }, |
790f00e1 ED |
1266 | { |
1267 | .procname = "tcp_autocorking", | |
1268 | .data = &init_net.ipv4.sysctl_tcp_autocorking, | |
4ecc1baf | 1269 | .maxlen = sizeof(u8), |
790f00e1 | 1270 | .mode = 0644, |
4ecc1baf | 1271 | .proc_handler = proc_dou8vec_minmax, |
eec4844f MC |
1272 | .extra1 = SYSCTL_ZERO, |
1273 | .extra2 = SYSCTL_ONE, | |
790f00e1 | 1274 | }, |
4170ba6b ED |
1275 | { |
1276 | .procname = "tcp_invalid_ratelimit", | |
1277 | .data = &init_net.ipv4.sysctl_tcp_invalid_ratelimit, | |
1278 | .maxlen = sizeof(int), | |
1279 | .mode = 0644, | |
1280 | .proc_handler = proc_dointvec_ms_jiffies, | |
1281 | }, | |
23a7102a ED |
1282 | { |
1283 | .procname = "tcp_pacing_ss_ratio", | |
1284 | .data = &init_net.ipv4.sysctl_tcp_pacing_ss_ratio, | |
1285 | .maxlen = sizeof(int), | |
1286 | .mode = 0644, | |
1287 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1288 | .extra1 = SYSCTL_ZERO, |
23a7102a ED |
1289 | .extra2 = &thousand, |
1290 | }, | |
c26e91f8 ED |
1291 | { |
1292 | .procname = "tcp_pacing_ca_ratio", | |
1293 | .data = &init_net.ipv4.sysctl_tcp_pacing_ca_ratio, | |
1294 | .maxlen = sizeof(int), | |
1295 | .mode = 0644, | |
1296 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1297 | .extra1 = SYSCTL_ZERO, |
c26e91f8 ED |
1298 | .extra2 = &thousand, |
1299 | }, | |
356d1833 ED |
1300 | { |
1301 | .procname = "tcp_wmem", | |
1302 | .data = &init_net.ipv4.sysctl_tcp_wmem, | |
1303 | .maxlen = sizeof(init_net.ipv4.sysctl_tcp_wmem), | |
1304 | .mode = 0644, | |
1305 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1306 | .extra1 = SYSCTL_ONE, |
356d1833 ED |
1307 | }, |
1308 | { | |
1309 | .procname = "tcp_rmem", | |
1310 | .data = &init_net.ipv4.sysctl_tcp_rmem, | |
1311 | .maxlen = sizeof(init_net.ipv4.sysctl_tcp_rmem), | |
1312 | .mode = 0644, | |
1313 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1314 | .extra1 = SYSCTL_ONE, |
356d1833 | 1315 | }, |
6d82aa24 ED |
1316 | { |
1317 | .procname = "tcp_comp_sack_delay_ns", | |
1318 | .data = &init_net.ipv4.sysctl_tcp_comp_sack_delay_ns, | |
1319 | .maxlen = sizeof(unsigned long), | |
1320 | .mode = 0644, | |
1321 | .proc_handler = proc_doulongvec_minmax, | |
1322 | }, | |
a70437cc ED |
1323 | { |
1324 | .procname = "tcp_comp_sack_slack_ns", | |
1325 | .data = &init_net.ipv4.sysctl_tcp_comp_sack_slack_ns, | |
1326 | .maxlen = sizeof(unsigned long), | |
1327 | .mode = 0644, | |
1328 | .proc_handler = proc_doulongvec_minmax, | |
1329 | }, | |
9c21d2fc ED |
1330 | { |
1331 | .procname = "tcp_comp_sack_nr", | |
1332 | .data = &init_net.ipv4.sysctl_tcp_comp_sack_nr, | |
1333 | .maxlen = sizeof(int), | |
1334 | .mode = 0644, | |
1335 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1336 | .extra1 = SYSCTL_ZERO, |
9c21d2fc ED |
1337 | .extra2 = &comp_sack_nr_max, |
1338 | }, | |
ac8f1710 WW |
1339 | { |
1340 | .procname = "tcp_reflect_tos", | |
1341 | .data = &init_net.ipv4.sysctl_tcp_reflect_tos, | |
4ecc1baf | 1342 | .maxlen = sizeof(u8), |
ac8f1710 | 1343 | .mode = 0644, |
4ecc1baf | 1344 | .proc_handler = proc_dou8vec_minmax, |
ac8f1710 WW |
1345 | .extra1 = SYSCTL_ZERO, |
1346 | .extra2 = SYSCTL_ONE, | |
1347 | }, | |
1e802951 TZ |
1348 | { |
1349 | .procname = "udp_rmem_min", | |
1350 | .data = &init_net.ipv4.sysctl_udp_rmem_min, | |
1351 | .maxlen = sizeof(init_net.ipv4.sysctl_udp_rmem_min), | |
1352 | .mode = 0644, | |
1353 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1354 | .extra1 = SYSCTL_ONE |
1e802951 TZ |
1355 | }, |
1356 | { | |
1357 | .procname = "udp_wmem_min", | |
1358 | .data = &init_net.ipv4.sysctl_udp_wmem_min, | |
1359 | .maxlen = sizeof(init_net.ipv4.sysctl_udp_wmem_min), | |
1360 | .mode = 0644, | |
1361 | .proc_handler = proc_dointvec_minmax, | |
eec4844f | 1362 | .extra1 = SYSCTL_ONE |
1e802951 | 1363 | }, |
680aea08 AC |
1364 | { |
1365 | .procname = "fib_notify_on_flag_change", | |
1366 | .data = &init_net.ipv4.sysctl_fib_notify_on_flag_change, | |
1367 | .maxlen = sizeof(int), | |
1368 | .mode = 0644, | |
1369 | .proc_handler = proc_dointvec_minmax, | |
1370 | .extra1 = SYSCTL_ZERO, | |
648106c3 | 1371 | .extra2 = &two, |
680aea08 | 1372 | }, |
68528f09 PE |
1373 | { } |
1374 | }; | |
1375 | ||
1577519d PE |
1376 | static __net_init int ipv4_sysctl_init_net(struct net *net) |
1377 | { | |
68528f09 PE |
1378 | struct ctl_table *table; |
1379 | ||
1380 | table = ipv4_net_table; | |
09ad9bc7 | 1381 | if (!net_eq(net, &init_net)) { |
0a6fa23d EB |
1382 | int i; |
1383 | ||
68528f09 | 1384 | table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL); |
51456b29 | 1385 | if (!table) |
68528f09 PE |
1386 | goto err_alloc; |
1387 | ||
0a6fa23d EB |
1388 | /* Update the variables to point into the current struct net */ |
1389 | for (i = 0; i < ARRAY_SIZE(ipv4_net_table) - 1; i++) | |
1390 | table[i].data += (void *)net - (void *)&init_net; | |
68528f09 PE |
1391 | } |
1392 | ||
ec8f23ce | 1393 | net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table); |
51456b29 | 1394 | if (!net->ipv4.ipv4_hdr) |
68528f09 PE |
1395 | goto err_reg; |
1396 | ||
122ff243 WC |
1397 | net->ipv4.sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL); |
1398 | if (!net->ipv4.sysctl_local_reserved_ports) | |
1399 | goto err_ports; | |
1400 | ||
1577519d | 1401 | return 0; |
68528f09 | 1402 | |
122ff243 WC |
1403 | err_ports: |
1404 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
68528f09 | 1405 | err_reg: |
09ad9bc7 | 1406 | if (!net_eq(net, &init_net)) |
68528f09 PE |
1407 | kfree(table); |
1408 | err_alloc: | |
1409 | return -ENOMEM; | |
1577519d PE |
1410 | } |
1411 | ||
1412 | static __net_exit void ipv4_sysctl_exit_net(struct net *net) | |
1413 | { | |
68528f09 PE |
1414 | struct ctl_table *table; |
1415 | ||
122ff243 | 1416 | kfree(net->ipv4.sysctl_local_reserved_ports); |
68528f09 PE |
1417 | table = net->ipv4.ipv4_hdr->ctl_table_arg; |
1418 | unregister_net_sysctl_table(net->ipv4.ipv4_hdr); | |
1419 | kfree(table); | |
1577519d PE |
1420 | } |
1421 | ||
1422 | static __net_initdata struct pernet_operations ipv4_sysctl_ops = { | |
1423 | .init = ipv4_sysctl_init_net, | |
1424 | .exit = ipv4_sysctl_exit_net, | |
1425 | }; | |
1426 | ||
3e37c3f9 PE |
1427 | static __init int sysctl_ipv4_init(void) |
1428 | { | |
1429 | struct ctl_table_header *hdr; | |
1430 | ||
ec8f23ce | 1431 | hdr = register_net_sysctl(&init_net, "net/ipv4", ipv4_table); |
51456b29 | 1432 | if (!hdr) |
1577519d PE |
1433 | return -ENOMEM; |
1434 | ||
1435 | if (register_pernet_subsys(&ipv4_sysctl_ops)) { | |
5dd3df10 | 1436 | unregister_net_sysctl_table(hdr); |
1577519d PE |
1437 | return -ENOMEM; |
1438 | } | |
1439 | ||
1440 | return 0; | |
3e37c3f9 PE |
1441 | } |
1442 | ||
1443 | __initcall(sysctl_ipv4_init); |