2 * sysctl_net_ipv4.c: sysctl interface to net IPV4 subsystem.
4 * $Id: sysctl_net_ipv4.c,v 1.50 2001/10/20 00:00:11 davem Exp $
6 * Begun April 1, 1996, Mike Shaver.
7 * Added /proc/sys/net/ipv4 directory entry (empty =) ). [MS]
11 #include <linux/module.h>
12 #include <linux/sysctl.h>
13 #include <linux/igmp.h>
14 #include <linux/inetdevice.h>
15 #include <linux/seqlock.h>
16 #include <linux/init.h>
20 #include <net/route.h>
23 #include <net/cipso_ipv4.h>
24 #include <net/inet_frag.h>
27 static int tcp_retr1_max
= 255;
28 static int ip_local_port_range_min
[] = { 1, 1 };
29 static int ip_local_port_range_max
[] = { 65535, 65535 };
31 extern seqlock_t sysctl_port_range_lock
;
32 extern int sysctl_local_port_range
[2];
34 /* Update system visible IP port range */
35 static void set_local_port_range(int range
[2])
37 write_seqlock(&sysctl_port_range_lock
);
38 sysctl_local_port_range
[0] = range
[0];
39 sysctl_local_port_range
[1] = range
[1];
40 write_sequnlock(&sysctl_port_range_lock
);
43 /* Validate changes from /proc interface. */
44 static int ipv4_local_port_range(ctl_table
*table
, int write
, struct file
*filp
,
46 size_t *lenp
, loff_t
*ppos
)
49 int range
[2] = { sysctl_local_port_range
[0],
50 sysctl_local_port_range
[1] };
53 .maxlen
= sizeof(range
),
55 .extra1
= &ip_local_port_range_min
,
56 .extra2
= &ip_local_port_range_max
,
59 ret
= proc_dointvec_minmax(&tmp
, write
, filp
, buffer
, lenp
, ppos
);
61 if (write
&& ret
== 0) {
62 if (range
[1] < range
[0])
65 set_local_port_range(range
);
71 /* Validate changes from sysctl interface. */
72 static int ipv4_sysctl_local_port_range(ctl_table
*table
, int __user
*name
,
73 int nlen
, void __user
*oldval
,
74 size_t __user
*oldlenp
,
75 void __user
*newval
, size_t newlen
)
78 int range
[2] = { sysctl_local_port_range
[0],
79 sysctl_local_port_range
[1] };
82 .maxlen
= sizeof(range
),
84 .extra1
= &ip_local_port_range_min
,
85 .extra2
= &ip_local_port_range_max
,
88 ret
= sysctl_intvec(&tmp
, name
, nlen
, oldval
, oldlenp
, newval
, newlen
);
89 if (ret
== 0 && newval
&& newlen
) {
90 if (range
[1] < range
[0])
93 set_local_port_range(range
);
99 static int proc_tcp_congestion_control(ctl_table
*ctl
, int write
, struct file
* filp
,
100 void __user
*buffer
, size_t *lenp
, loff_t
*ppos
)
102 char val
[TCP_CA_NAME_MAX
];
105 .maxlen
= TCP_CA_NAME_MAX
,
109 tcp_get_default_congestion_control(val
);
111 ret
= proc_dostring(&tbl
, write
, filp
, buffer
, lenp
, ppos
);
112 if (write
&& ret
== 0)
113 ret
= tcp_set_default_congestion_control(val
);
117 static int sysctl_tcp_congestion_control(ctl_table
*table
, int __user
*name
,
118 int nlen
, void __user
*oldval
,
119 size_t __user
*oldlenp
,
120 void __user
*newval
, size_t newlen
)
122 char val
[TCP_CA_NAME_MAX
];
125 .maxlen
= TCP_CA_NAME_MAX
,
129 tcp_get_default_congestion_control(val
);
130 ret
= sysctl_string(&tbl
, name
, nlen
, oldval
, oldlenp
, newval
, newlen
);
131 if (ret
== 1 && newval
&& newlen
)
132 ret
= tcp_set_default_congestion_control(val
);
136 static int proc_tcp_available_congestion_control(ctl_table
*ctl
,
137 int write
, struct file
* filp
,
138 void __user
*buffer
, size_t *lenp
,
141 ctl_table tbl
= { .maxlen
= TCP_CA_BUF_MAX
, };
144 tbl
.data
= kmalloc(tbl
.maxlen
, GFP_USER
);
147 tcp_get_available_congestion_control(tbl
.data
, TCP_CA_BUF_MAX
);
148 ret
= proc_dostring(&tbl
, write
, filp
, buffer
, lenp
, ppos
);
153 static int proc_allowed_congestion_control(ctl_table
*ctl
,
154 int write
, struct file
* filp
,
155 void __user
*buffer
, size_t *lenp
,
158 ctl_table tbl
= { .maxlen
= TCP_CA_BUF_MAX
};
161 tbl
.data
= kmalloc(tbl
.maxlen
, GFP_USER
);
165 tcp_get_allowed_congestion_control(tbl
.data
, tbl
.maxlen
);
166 ret
= proc_dostring(&tbl
, write
, filp
, buffer
, lenp
, ppos
);
167 if (write
&& ret
== 0)
168 ret
= tcp_set_allowed_congestion_control(tbl
.data
);
173 static int strategy_allowed_congestion_control(ctl_table
*table
, int __user
*name
,
174 int nlen
, void __user
*oldval
,
175 size_t __user
*oldlenp
,
179 ctl_table tbl
= { .maxlen
= TCP_CA_BUF_MAX
};
182 tbl
.data
= kmalloc(tbl
.maxlen
, GFP_USER
);
186 tcp_get_available_congestion_control(tbl
.data
, tbl
.maxlen
);
187 ret
= sysctl_string(&tbl
, name
, nlen
, oldval
, oldlenp
, newval
, newlen
);
188 if (ret
== 0 && newval
&& newlen
)
189 ret
= tcp_set_allowed_congestion_control(tbl
.data
);
196 static struct ctl_table ipv4_table
[] = {
198 .ctl_name
= NET_IPV4_TCP_TIMESTAMPS
,
199 .procname
= "tcp_timestamps",
200 .data
= &sysctl_tcp_timestamps
,
201 .maxlen
= sizeof(int),
203 .proc_handler
= &proc_dointvec
206 .ctl_name
= NET_IPV4_TCP_WINDOW_SCALING
,
207 .procname
= "tcp_window_scaling",
208 .data
= &sysctl_tcp_window_scaling
,
209 .maxlen
= sizeof(int),
211 .proc_handler
= &proc_dointvec
214 .ctl_name
= NET_IPV4_TCP_SACK
,
215 .procname
= "tcp_sack",
216 .data
= &sysctl_tcp_sack
,
217 .maxlen
= sizeof(int),
219 .proc_handler
= &proc_dointvec
222 .ctl_name
= NET_IPV4_TCP_RETRANS_COLLAPSE
,
223 .procname
= "tcp_retrans_collapse",
224 .data
= &sysctl_tcp_retrans_collapse
,
225 .maxlen
= sizeof(int),
227 .proc_handler
= &proc_dointvec
230 .ctl_name
= NET_IPV4_DEFAULT_TTL
,
231 .procname
= "ip_default_ttl",
232 .data
= &sysctl_ip_default_ttl
,
233 .maxlen
= sizeof(int),
235 .proc_handler
= &ipv4_doint_and_flush
,
236 .strategy
= &ipv4_doint_and_flush_strategy
,
239 .ctl_name
= NET_IPV4_NO_PMTU_DISC
,
240 .procname
= "ip_no_pmtu_disc",
241 .data
= &ipv4_config
.no_pmtu_disc
,
242 .maxlen
= sizeof(int),
244 .proc_handler
= &proc_dointvec
247 .ctl_name
= NET_IPV4_NONLOCAL_BIND
,
248 .procname
= "ip_nonlocal_bind",
249 .data
= &sysctl_ip_nonlocal_bind
,
250 .maxlen
= sizeof(int),
252 .proc_handler
= &proc_dointvec
255 .ctl_name
= NET_IPV4_TCP_SYN_RETRIES
,
256 .procname
= "tcp_syn_retries",
257 .data
= &sysctl_tcp_syn_retries
,
258 .maxlen
= sizeof(int),
260 .proc_handler
= &proc_dointvec
263 .ctl_name
= NET_TCP_SYNACK_RETRIES
,
264 .procname
= "tcp_synack_retries",
265 .data
= &sysctl_tcp_synack_retries
,
266 .maxlen
= sizeof(int),
268 .proc_handler
= &proc_dointvec
271 .ctl_name
= NET_TCP_MAX_ORPHANS
,
272 .procname
= "tcp_max_orphans",
273 .data
= &sysctl_tcp_max_orphans
,
274 .maxlen
= sizeof(int),
276 .proc_handler
= &proc_dointvec
279 .ctl_name
= NET_TCP_MAX_TW_BUCKETS
,
280 .procname
= "tcp_max_tw_buckets",
281 .data
= &tcp_death_row
.sysctl_max_tw_buckets
,
282 .maxlen
= sizeof(int),
284 .proc_handler
= &proc_dointvec
287 .ctl_name
= NET_IPV4_IPFRAG_HIGH_THRESH
,
288 .procname
= "ipfrag_high_thresh",
289 .data
= &ip4_frags_ctl
.high_thresh
,
290 .maxlen
= sizeof(int),
292 .proc_handler
= &proc_dointvec
295 .ctl_name
= NET_IPV4_IPFRAG_LOW_THRESH
,
296 .procname
= "ipfrag_low_thresh",
297 .data
= &ip4_frags_ctl
.low_thresh
,
298 .maxlen
= sizeof(int),
300 .proc_handler
= &proc_dointvec
303 .ctl_name
= NET_IPV4_DYNADDR
,
304 .procname
= "ip_dynaddr",
305 .data
= &sysctl_ip_dynaddr
,
306 .maxlen
= sizeof(int),
308 .proc_handler
= &proc_dointvec
311 .ctl_name
= NET_IPV4_IPFRAG_TIME
,
312 .procname
= "ipfrag_time",
313 .data
= &ip4_frags_ctl
.timeout
,
314 .maxlen
= sizeof(int),
316 .proc_handler
= &proc_dointvec_jiffies
,
317 .strategy
= &sysctl_jiffies
320 .ctl_name
= NET_IPV4_TCP_KEEPALIVE_TIME
,
321 .procname
= "tcp_keepalive_time",
322 .data
= &sysctl_tcp_keepalive_time
,
323 .maxlen
= sizeof(int),
325 .proc_handler
= &proc_dointvec_jiffies
,
326 .strategy
= &sysctl_jiffies
329 .ctl_name
= NET_IPV4_TCP_KEEPALIVE_PROBES
,
330 .procname
= "tcp_keepalive_probes",
331 .data
= &sysctl_tcp_keepalive_probes
,
332 .maxlen
= sizeof(int),
334 .proc_handler
= &proc_dointvec
337 .ctl_name
= NET_IPV4_TCP_KEEPALIVE_INTVL
,
338 .procname
= "tcp_keepalive_intvl",
339 .data
= &sysctl_tcp_keepalive_intvl
,
340 .maxlen
= sizeof(int),
342 .proc_handler
= &proc_dointvec_jiffies
,
343 .strategy
= &sysctl_jiffies
346 .ctl_name
= NET_IPV4_TCP_RETRIES1
,
347 .procname
= "tcp_retries1",
348 .data
= &sysctl_tcp_retries1
,
349 .maxlen
= sizeof(int),
351 .proc_handler
= &proc_dointvec_minmax
,
352 .strategy
= &sysctl_intvec
,
353 .extra2
= &tcp_retr1_max
356 .ctl_name
= NET_IPV4_TCP_RETRIES2
,
357 .procname
= "tcp_retries2",
358 .data
= &sysctl_tcp_retries2
,
359 .maxlen
= sizeof(int),
361 .proc_handler
= &proc_dointvec
364 .ctl_name
= NET_IPV4_TCP_FIN_TIMEOUT
,
365 .procname
= "tcp_fin_timeout",
366 .data
= &sysctl_tcp_fin_timeout
,
367 .maxlen
= sizeof(int),
369 .proc_handler
= &proc_dointvec_jiffies
,
370 .strategy
= &sysctl_jiffies
372 #ifdef CONFIG_SYN_COOKIES
374 .ctl_name
= NET_TCP_SYNCOOKIES
,
375 .procname
= "tcp_syncookies",
376 .data
= &sysctl_tcp_syncookies
,
377 .maxlen
= sizeof(int),
379 .proc_handler
= &proc_dointvec
383 .ctl_name
= NET_TCP_TW_RECYCLE
,
384 .procname
= "tcp_tw_recycle",
385 .data
= &tcp_death_row
.sysctl_tw_recycle
,
386 .maxlen
= sizeof(int),
388 .proc_handler
= &proc_dointvec
391 .ctl_name
= NET_TCP_ABORT_ON_OVERFLOW
,
392 .procname
= "tcp_abort_on_overflow",
393 .data
= &sysctl_tcp_abort_on_overflow
,
394 .maxlen
= sizeof(int),
396 .proc_handler
= &proc_dointvec
399 .ctl_name
= NET_TCP_STDURG
,
400 .procname
= "tcp_stdurg",
401 .data
= &sysctl_tcp_stdurg
,
402 .maxlen
= sizeof(int),
404 .proc_handler
= &proc_dointvec
407 .ctl_name
= NET_TCP_RFC1337
,
408 .procname
= "tcp_rfc1337",
409 .data
= &sysctl_tcp_rfc1337
,
410 .maxlen
= sizeof(int),
412 .proc_handler
= &proc_dointvec
415 .ctl_name
= NET_TCP_MAX_SYN_BACKLOG
,
416 .procname
= "tcp_max_syn_backlog",
417 .data
= &sysctl_max_syn_backlog
,
418 .maxlen
= sizeof(int),
420 .proc_handler
= &proc_dointvec
423 .ctl_name
= NET_IPV4_LOCAL_PORT_RANGE
,
424 .procname
= "ip_local_port_range",
425 .data
= &sysctl_local_port_range
,
426 .maxlen
= sizeof(sysctl_local_port_range
),
428 .proc_handler
= &ipv4_local_port_range
,
429 .strategy
= &ipv4_sysctl_local_port_range
,
432 .ctl_name
= NET_IPV4_ICMP_ECHO_IGNORE_ALL
,
433 .procname
= "icmp_echo_ignore_all",
434 .data
= &sysctl_icmp_echo_ignore_all
,
435 .maxlen
= sizeof(int),
437 .proc_handler
= &proc_dointvec
440 .ctl_name
= NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS
,
441 .procname
= "icmp_echo_ignore_broadcasts",
442 .data
= &sysctl_icmp_echo_ignore_broadcasts
,
443 .maxlen
= sizeof(int),
445 .proc_handler
= &proc_dointvec
448 .ctl_name
= NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES
,
449 .procname
= "icmp_ignore_bogus_error_responses",
450 .data
= &sysctl_icmp_ignore_bogus_error_responses
,
451 .maxlen
= sizeof(int),
453 .proc_handler
= &proc_dointvec
456 .ctl_name
= NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR
,
457 .procname
= "icmp_errors_use_inbound_ifaddr",
458 .data
= &sysctl_icmp_errors_use_inbound_ifaddr
,
459 .maxlen
= sizeof(int),
461 .proc_handler
= &proc_dointvec
464 .ctl_name
= NET_IPV4_ROUTE
,
468 .child
= ipv4_route_table
470 #ifdef CONFIG_IP_MULTICAST
472 .ctl_name
= NET_IPV4_IGMP_MAX_MEMBERSHIPS
,
473 .procname
= "igmp_max_memberships",
474 .data
= &sysctl_igmp_max_memberships
,
475 .maxlen
= sizeof(int),
477 .proc_handler
= &proc_dointvec
482 .ctl_name
= NET_IPV4_IGMP_MAX_MSF
,
483 .procname
= "igmp_max_msf",
484 .data
= &sysctl_igmp_max_msf
,
485 .maxlen
= sizeof(int),
487 .proc_handler
= &proc_dointvec
490 .ctl_name
= NET_IPV4_INET_PEER_THRESHOLD
,
491 .procname
= "inet_peer_threshold",
492 .data
= &inet_peer_threshold
,
493 .maxlen
= sizeof(int),
495 .proc_handler
= &proc_dointvec
498 .ctl_name
= NET_IPV4_INET_PEER_MINTTL
,
499 .procname
= "inet_peer_minttl",
500 .data
= &inet_peer_minttl
,
501 .maxlen
= sizeof(int),
503 .proc_handler
= &proc_dointvec_jiffies
,
504 .strategy
= &sysctl_jiffies
507 .ctl_name
= NET_IPV4_INET_PEER_MAXTTL
,
508 .procname
= "inet_peer_maxttl",
509 .data
= &inet_peer_maxttl
,
510 .maxlen
= sizeof(int),
512 .proc_handler
= &proc_dointvec_jiffies
,
513 .strategy
= &sysctl_jiffies
516 .ctl_name
= NET_IPV4_INET_PEER_GC_MINTIME
,
517 .procname
= "inet_peer_gc_mintime",
518 .data
= &inet_peer_gc_mintime
,
519 .maxlen
= sizeof(int),
521 .proc_handler
= &proc_dointvec_jiffies
,
522 .strategy
= &sysctl_jiffies
525 .ctl_name
= NET_IPV4_INET_PEER_GC_MAXTIME
,
526 .procname
= "inet_peer_gc_maxtime",
527 .data
= &inet_peer_gc_maxtime
,
528 .maxlen
= sizeof(int),
530 .proc_handler
= &proc_dointvec_jiffies
,
531 .strategy
= &sysctl_jiffies
534 .ctl_name
= NET_TCP_ORPHAN_RETRIES
,
535 .procname
= "tcp_orphan_retries",
536 .data
= &sysctl_tcp_orphan_retries
,
537 .maxlen
= sizeof(int),
539 .proc_handler
= &proc_dointvec
542 .ctl_name
= NET_TCP_FACK
,
543 .procname
= "tcp_fack",
544 .data
= &sysctl_tcp_fack
,
545 .maxlen
= sizeof(int),
547 .proc_handler
= &proc_dointvec
550 .ctl_name
= NET_TCP_REORDERING
,
551 .procname
= "tcp_reordering",
552 .data
= &sysctl_tcp_reordering
,
553 .maxlen
= sizeof(int),
555 .proc_handler
= &proc_dointvec
558 .ctl_name
= NET_TCP_ECN
,
559 .procname
= "tcp_ecn",
560 .data
= &sysctl_tcp_ecn
,
561 .maxlen
= sizeof(int),
563 .proc_handler
= &proc_dointvec
566 .ctl_name
= NET_TCP_DSACK
,
567 .procname
= "tcp_dsack",
568 .data
= &sysctl_tcp_dsack
,
569 .maxlen
= sizeof(int),
571 .proc_handler
= &proc_dointvec
574 .ctl_name
= NET_TCP_MEM
,
575 .procname
= "tcp_mem",
576 .data
= &sysctl_tcp_mem
,
577 .maxlen
= sizeof(sysctl_tcp_mem
),
579 .proc_handler
= &proc_dointvec
582 .ctl_name
= NET_TCP_WMEM
,
583 .procname
= "tcp_wmem",
584 .data
= &sysctl_tcp_wmem
,
585 .maxlen
= sizeof(sysctl_tcp_wmem
),
587 .proc_handler
= &proc_dointvec
590 .ctl_name
= NET_TCP_RMEM
,
591 .procname
= "tcp_rmem",
592 .data
= &sysctl_tcp_rmem
,
593 .maxlen
= sizeof(sysctl_tcp_rmem
),
595 .proc_handler
= &proc_dointvec
598 .ctl_name
= NET_TCP_APP_WIN
,
599 .procname
= "tcp_app_win",
600 .data
= &sysctl_tcp_app_win
,
601 .maxlen
= sizeof(int),
603 .proc_handler
= &proc_dointvec
606 .ctl_name
= NET_TCP_ADV_WIN_SCALE
,
607 .procname
= "tcp_adv_win_scale",
608 .data
= &sysctl_tcp_adv_win_scale
,
609 .maxlen
= sizeof(int),
611 .proc_handler
= &proc_dointvec
614 .ctl_name
= NET_IPV4_ICMP_RATELIMIT
,
615 .procname
= "icmp_ratelimit",
616 .data
= &sysctl_icmp_ratelimit
,
617 .maxlen
= sizeof(int),
619 .proc_handler
= &proc_dointvec
622 .ctl_name
= NET_IPV4_ICMP_RATEMASK
,
623 .procname
= "icmp_ratemask",
624 .data
= &sysctl_icmp_ratemask
,
625 .maxlen
= sizeof(int),
627 .proc_handler
= &proc_dointvec
630 .ctl_name
= NET_TCP_TW_REUSE
,
631 .procname
= "tcp_tw_reuse",
632 .data
= &sysctl_tcp_tw_reuse
,
633 .maxlen
= sizeof(int),
635 .proc_handler
= &proc_dointvec
638 .ctl_name
= NET_TCP_FRTO
,
639 .procname
= "tcp_frto",
640 .data
= &sysctl_tcp_frto
,
641 .maxlen
= sizeof(int),
643 .proc_handler
= &proc_dointvec
646 .ctl_name
= NET_TCP_FRTO_RESPONSE
,
647 .procname
= "tcp_frto_response",
648 .data
= &sysctl_tcp_frto_response
,
649 .maxlen
= sizeof(int),
651 .proc_handler
= &proc_dointvec
654 .ctl_name
= NET_TCP_LOW_LATENCY
,
655 .procname
= "tcp_low_latency",
656 .data
= &sysctl_tcp_low_latency
,
657 .maxlen
= sizeof(int),
659 .proc_handler
= &proc_dointvec
662 .ctl_name
= NET_IPV4_IPFRAG_SECRET_INTERVAL
,
663 .procname
= "ipfrag_secret_interval",
664 .data
= &ip4_frags_ctl
.secret_interval
,
665 .maxlen
= sizeof(int),
667 .proc_handler
= &proc_dointvec_jiffies
,
668 .strategy
= &sysctl_jiffies
671 .procname
= "ipfrag_max_dist",
672 .data
= &sysctl_ipfrag_max_dist
,
673 .maxlen
= sizeof(int),
675 .proc_handler
= &proc_dointvec_minmax
,
679 .ctl_name
= NET_TCP_NO_METRICS_SAVE
,
680 .procname
= "tcp_no_metrics_save",
681 .data
= &sysctl_tcp_nometrics_save
,
682 .maxlen
= sizeof(int),
684 .proc_handler
= &proc_dointvec
,
687 .ctl_name
= NET_TCP_MODERATE_RCVBUF
,
688 .procname
= "tcp_moderate_rcvbuf",
689 .data
= &sysctl_tcp_moderate_rcvbuf
,
690 .maxlen
= sizeof(int),
692 .proc_handler
= &proc_dointvec
,
695 .ctl_name
= NET_TCP_TSO_WIN_DIVISOR
,
696 .procname
= "tcp_tso_win_divisor",
697 .data
= &sysctl_tcp_tso_win_divisor
,
698 .maxlen
= sizeof(int),
700 .proc_handler
= &proc_dointvec
,
703 .ctl_name
= NET_TCP_CONG_CONTROL
,
704 .procname
= "tcp_congestion_control",
706 .maxlen
= TCP_CA_NAME_MAX
,
707 .proc_handler
= &proc_tcp_congestion_control
,
708 .strategy
= &sysctl_tcp_congestion_control
,
711 .ctl_name
= NET_TCP_ABC
,
712 .procname
= "tcp_abc",
713 .data
= &sysctl_tcp_abc
,
714 .maxlen
= sizeof(int),
716 .proc_handler
= &proc_dointvec
,
719 .ctl_name
= NET_TCP_MTU_PROBING
,
720 .procname
= "tcp_mtu_probing",
721 .data
= &sysctl_tcp_mtu_probing
,
722 .maxlen
= sizeof(int),
724 .proc_handler
= &proc_dointvec
,
727 .ctl_name
= NET_TCP_BASE_MSS
,
728 .procname
= "tcp_base_mss",
729 .data
= &sysctl_tcp_base_mss
,
730 .maxlen
= sizeof(int),
732 .proc_handler
= &proc_dointvec
,
735 .ctl_name
= NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS
,
736 .procname
= "tcp_workaround_signed_windows",
737 .data
= &sysctl_tcp_workaround_signed_windows
,
738 .maxlen
= sizeof(int),
740 .proc_handler
= &proc_dointvec
742 #ifdef CONFIG_NET_DMA
744 .ctl_name
= NET_TCP_DMA_COPYBREAK
,
745 .procname
= "tcp_dma_copybreak",
746 .data
= &sysctl_tcp_dma_copybreak
,
747 .maxlen
= sizeof(int),
749 .proc_handler
= &proc_dointvec
753 .ctl_name
= NET_TCP_SLOW_START_AFTER_IDLE
,
754 .procname
= "tcp_slow_start_after_idle",
755 .data
= &sysctl_tcp_slow_start_after_idle
,
756 .maxlen
= sizeof(int),
758 .proc_handler
= &proc_dointvec
760 #ifdef CONFIG_NETLABEL
762 .ctl_name
= NET_CIPSOV4_CACHE_ENABLE
,
763 .procname
= "cipso_cache_enable",
764 .data
= &cipso_v4_cache_enabled
,
765 .maxlen
= sizeof(int),
767 .proc_handler
= &proc_dointvec
,
770 .ctl_name
= NET_CIPSOV4_CACHE_BUCKET_SIZE
,
771 .procname
= "cipso_cache_bucket_size",
772 .data
= &cipso_v4_cache_bucketsize
,
773 .maxlen
= sizeof(int),
775 .proc_handler
= &proc_dointvec
,
778 .ctl_name
= NET_CIPSOV4_RBM_OPTFMT
,
779 .procname
= "cipso_rbm_optfmt",
780 .data
= &cipso_v4_rbm_optfmt
,
781 .maxlen
= sizeof(int),
783 .proc_handler
= &proc_dointvec
,
786 .ctl_name
= NET_CIPSOV4_RBM_STRICTVALID
,
787 .procname
= "cipso_rbm_strictvalid",
788 .data
= &cipso_v4_rbm_strictvalid
,
789 .maxlen
= sizeof(int),
791 .proc_handler
= &proc_dointvec
,
793 #endif /* CONFIG_NETLABEL */
795 .procname
= "tcp_available_congestion_control",
796 .maxlen
= TCP_CA_BUF_MAX
,
798 .proc_handler
= &proc_tcp_available_congestion_control
,
801 .ctl_name
= NET_TCP_ALLOWED_CONG_CONTROL
,
802 .procname
= "tcp_allowed_congestion_control",
803 .maxlen
= TCP_CA_BUF_MAX
,
805 .proc_handler
= &proc_allowed_congestion_control
,
806 .strategy
= &strategy_allowed_congestion_control
,
809 .ctl_name
= NET_TCP_MAX_SSTHRESH
,
810 .procname
= "tcp_max_ssthresh",
811 .data
= &sysctl_tcp_max_ssthresh
,
812 .maxlen
= sizeof(int),
814 .proc_handler
= &proc_dointvec
,
817 .ctl_name
= CTL_UNNUMBERED
,
818 .procname
= "udp_mem",
819 .data
= &sysctl_udp_mem
,
820 .maxlen
= sizeof(sysctl_udp_mem
),
822 .proc_handler
= &proc_dointvec_minmax
,
823 .strategy
= &sysctl_intvec
,
827 .ctl_name
= CTL_UNNUMBERED
,
828 .procname
= "udp_rmem_min",
829 .data
= &sysctl_udp_rmem_min
,
830 .maxlen
= sizeof(sysctl_udp_rmem_min
),
832 .proc_handler
= &proc_dointvec_minmax
,
833 .strategy
= &sysctl_intvec
,
837 .ctl_name
= CTL_UNNUMBERED
,
838 .procname
= "udp_wmem_min",
839 .data
= &sysctl_udp_wmem_min
,
840 .maxlen
= sizeof(sysctl_udp_wmem_min
),
842 .proc_handler
= &proc_dointvec_minmax
,
843 .strategy
= &sysctl_intvec
,
849 struct ctl_path net_ipv4_ctl_path
[] = {
850 { .procname
= "net", .ctl_name
= CTL_NET
, },
851 { .procname
= "ipv4", .ctl_name
= NET_IPV4
, },
854 EXPORT_SYMBOL_GPL(net_ipv4_ctl_path
);
856 static __init
int sysctl_ipv4_init(void)
858 struct ctl_table_header
*hdr
;
860 hdr
= register_sysctl_paths(net_ipv4_ctl_path
, ipv4_table
);
861 return hdr
== NULL
? -ENOMEM
: 0;
864 __initcall(sysctl_ipv4_init
);