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>
19 #include <net/route.h>
21 #include <net/cipso_ipv4.h>
24 extern int sysctl_ip_nonlocal_bind;
28 static int tcp_retr1_max = 255;
29 static int ip_local_port_range_min[] = { 1, 1 };
30 static int ip_local_port_range_max[] = { 65535, 65535 };
33 struct ipv4_config ipv4_config;
38 int ipv4_sysctl_forward(ctl_table *ctl, int write, struct file * filp,
39 void __user *buffer, size_t *lenp, loff_t *ppos)
41 int val = IPV4_DEVCONF_ALL(FORWARDING);
44 ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
46 if (write && IPV4_DEVCONF_ALL(FORWARDING) != val)
47 inet_forward_change();
52 static int ipv4_sysctl_forward_strategy(ctl_table *table,
53 int __user *name, int nlen,
54 void __user *oldval, size_t __user *oldlenp,
55 void __user *newval, size_t newlen)
57 int *valp = table->data;
60 if (!newval || !newlen)
63 if (newlen != sizeof(int))
66 if (get_user(new, (int __user *)newval))
72 if (oldval && oldlenp) {
75 if (get_user(len, oldlenp))
79 if (len > table->maxlen)
81 if (copy_to_user(oldval, valp, len))
83 if (put_user(len, oldlenp))
89 inet_forward_change();
93 extern seqlock_t sysctl_port_range_lock;
94 extern int sysctl_local_port_range[2];
96 /* Update system visible IP port range */
97 static void set_local_port_range(int range[2])
99 write_seqlock(&sysctl_port_range_lock);
100 sysctl_local_port_range[0] = range[0];
101 sysctl_local_port_range[1] = range[1];
102 write_sequnlock(&sysctl_port_range_lock);
105 /* Validate changes from /proc interface. */
106 static int ipv4_local_port_range(ctl_table *table, int write, struct file *filp,
108 size_t *lenp, loff_t *ppos)
111 int range[2] = { sysctl_local_port_range[0],
112 sysctl_local_port_range[1] };
115 .maxlen = sizeof(range),
117 .extra1 = &ip_local_port_range_min,
118 .extra2 = &ip_local_port_range_max,
121 ret = proc_dointvec_minmax(&tmp, write, filp, buffer, lenp, ppos);
123 if (write && ret == 0) {
124 if (range[1] <= range[0])
127 set_local_port_range(range);
133 /* Validate changes from sysctl interface. */
134 static int ipv4_sysctl_local_port_range(ctl_table *table, int __user *name,
135 int nlen, void __user *oldval,
136 size_t __user *oldlenp,
137 void __user *newval, size_t newlen)
140 int range[2] = { sysctl_local_port_range[0],
141 sysctl_local_port_range[1] };
144 .maxlen = sizeof(range),
146 .extra1 = &ip_local_port_range_min,
147 .extra2 = &ip_local_port_range_max,
150 ret = sysctl_intvec(&tmp, name, nlen, oldval, oldlenp, newval, newlen);
151 if (ret == 0 && newval && newlen) {
152 if (range[1] <= range[0])
155 set_local_port_range(range);
161 static int proc_tcp_congestion_control(ctl_table *ctl, int write, struct file * filp,
162 void __user *buffer, size_t *lenp, loff_t *ppos)
164 char val[TCP_CA_NAME_MAX];
167 .maxlen = TCP_CA_NAME_MAX,
171 tcp_get_default_congestion_control(val);
173 ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
174 if (write && ret == 0)
175 ret = tcp_set_default_congestion_control(val);
179 static int sysctl_tcp_congestion_control(ctl_table *table, int __user *name,
180 int nlen, void __user *oldval,
181 size_t __user *oldlenp,
182 void __user *newval, size_t newlen)
184 char val[TCP_CA_NAME_MAX];
187 .maxlen = TCP_CA_NAME_MAX,
191 tcp_get_default_congestion_control(val);
192 ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen);
193 if (ret == 0 && newval && newlen)
194 ret = tcp_set_default_congestion_control(val);
198 static int proc_tcp_available_congestion_control(ctl_table *ctl,
199 int write, struct file * filp,
200 void __user *buffer, size_t *lenp,
203 ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
206 tbl.data = kmalloc(tbl.maxlen, GFP_USER);
209 tcp_get_available_congestion_control(tbl.data, TCP_CA_BUF_MAX);
210 ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
215 static int proc_allowed_congestion_control(ctl_table *ctl,
216 int write, struct file * filp,
217 void __user *buffer, size_t *lenp,
220 ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
223 tbl.data = kmalloc(tbl.maxlen, GFP_USER);
227 tcp_get_allowed_congestion_control(tbl.data, tbl.maxlen);
228 ret = proc_dostring(&tbl, write, filp, buffer, lenp, ppos);
229 if (write && ret == 0)
230 ret = tcp_set_allowed_congestion_control(tbl.data);
235 static int strategy_allowed_congestion_control(ctl_table *table, int __user *name,
236 int nlen, void __user *oldval,
237 size_t __user *oldlenp,
241 ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
244 tbl.data = kmalloc(tbl.maxlen, GFP_USER);
248 tcp_get_available_congestion_control(tbl.data, tbl.maxlen);
249 ret = sysctl_string(&tbl, name, nlen, oldval, oldlenp, newval, newlen);
250 if (ret == 0 && newval && newlen)
251 ret = tcp_set_allowed_congestion_control(tbl.data);
258 ctl_table ipv4_table[] = {
260 .ctl_name = NET_IPV4_TCP_TIMESTAMPS,
261 .procname = "tcp_timestamps",
262 .data = &sysctl_tcp_timestamps,
263 .maxlen = sizeof(int),
265 .proc_handler = &proc_dointvec
268 .ctl_name = NET_IPV4_TCP_WINDOW_SCALING,
269 .procname = "tcp_window_scaling",
270 .data = &sysctl_tcp_window_scaling,
271 .maxlen = sizeof(int),
273 .proc_handler = &proc_dointvec
276 .ctl_name = NET_IPV4_TCP_SACK,
277 .procname = "tcp_sack",
278 .data = &sysctl_tcp_sack,
279 .maxlen = sizeof(int),
281 .proc_handler = &proc_dointvec
284 .ctl_name = NET_IPV4_TCP_RETRANS_COLLAPSE,
285 .procname = "tcp_retrans_collapse",
286 .data = &sysctl_tcp_retrans_collapse,
287 .maxlen = sizeof(int),
289 .proc_handler = &proc_dointvec
292 .ctl_name = NET_IPV4_FORWARD,
293 .procname = "ip_forward",
294 .data = &IPV4_DEVCONF_ALL(FORWARDING),
295 .maxlen = sizeof(int),
297 .proc_handler = &ipv4_sysctl_forward,
298 .strategy = &ipv4_sysctl_forward_strategy
301 .ctl_name = NET_IPV4_DEFAULT_TTL,
302 .procname = "ip_default_ttl",
303 .data = &sysctl_ip_default_ttl,
304 .maxlen = sizeof(int),
306 .proc_handler = &ipv4_doint_and_flush,
307 .strategy = &ipv4_doint_and_flush_strategy,
310 .ctl_name = NET_IPV4_NO_PMTU_DISC,
311 .procname = "ip_no_pmtu_disc",
312 .data = &ipv4_config.no_pmtu_disc,
313 .maxlen = sizeof(int),
315 .proc_handler = &proc_dointvec
318 .ctl_name = NET_IPV4_NONLOCAL_BIND,
319 .procname = "ip_nonlocal_bind",
320 .data = &sysctl_ip_nonlocal_bind,
321 .maxlen = sizeof(int),
323 .proc_handler = &proc_dointvec
326 .ctl_name = NET_IPV4_TCP_SYN_RETRIES,
327 .procname = "tcp_syn_retries",
328 .data = &sysctl_tcp_syn_retries,
329 .maxlen = sizeof(int),
331 .proc_handler = &proc_dointvec
334 .ctl_name = NET_TCP_SYNACK_RETRIES,
335 .procname = "tcp_synack_retries",
336 .data = &sysctl_tcp_synack_retries,
337 .maxlen = sizeof(int),
339 .proc_handler = &proc_dointvec
342 .ctl_name = NET_TCP_MAX_ORPHANS,
343 .procname = "tcp_max_orphans",
344 .data = &sysctl_tcp_max_orphans,
345 .maxlen = sizeof(int),
347 .proc_handler = &proc_dointvec
350 .ctl_name = NET_TCP_MAX_TW_BUCKETS,
351 .procname = "tcp_max_tw_buckets",
352 .data = &tcp_death_row.sysctl_max_tw_buckets,
353 .maxlen = sizeof(int),
355 .proc_handler = &proc_dointvec
358 .ctl_name = NET_IPV4_IPFRAG_HIGH_THRESH,
359 .procname = "ipfrag_high_thresh",
360 .data = &sysctl_ipfrag_high_thresh,
361 .maxlen = sizeof(int),
363 .proc_handler = &proc_dointvec
366 .ctl_name = NET_IPV4_IPFRAG_LOW_THRESH,
367 .procname = "ipfrag_low_thresh",
368 .data = &sysctl_ipfrag_low_thresh,
369 .maxlen = sizeof(int),
371 .proc_handler = &proc_dointvec
374 .ctl_name = NET_IPV4_DYNADDR,
375 .procname = "ip_dynaddr",
376 .data = &sysctl_ip_dynaddr,
377 .maxlen = sizeof(int),
379 .proc_handler = &proc_dointvec
382 .ctl_name = NET_IPV4_IPFRAG_TIME,
383 .procname = "ipfrag_time",
384 .data = &sysctl_ipfrag_time,
385 .maxlen = sizeof(int),
387 .proc_handler = &proc_dointvec_jiffies,
388 .strategy = &sysctl_jiffies
391 .ctl_name = NET_IPV4_TCP_KEEPALIVE_TIME,
392 .procname = "tcp_keepalive_time",
393 .data = &sysctl_tcp_keepalive_time,
394 .maxlen = sizeof(int),
396 .proc_handler = &proc_dointvec_jiffies,
397 .strategy = &sysctl_jiffies
400 .ctl_name = NET_IPV4_TCP_KEEPALIVE_PROBES,
401 .procname = "tcp_keepalive_probes",
402 .data = &sysctl_tcp_keepalive_probes,
403 .maxlen = sizeof(int),
405 .proc_handler = &proc_dointvec
408 .ctl_name = NET_IPV4_TCP_KEEPALIVE_INTVL,
409 .procname = "tcp_keepalive_intvl",
410 .data = &sysctl_tcp_keepalive_intvl,
411 .maxlen = sizeof(int),
413 .proc_handler = &proc_dointvec_jiffies,
414 .strategy = &sysctl_jiffies
417 .ctl_name = NET_IPV4_TCP_RETRIES1,
418 .procname = "tcp_retries1",
419 .data = &sysctl_tcp_retries1,
420 .maxlen = sizeof(int),
422 .proc_handler = &proc_dointvec_minmax,
423 .strategy = &sysctl_intvec,
424 .extra2 = &tcp_retr1_max
427 .ctl_name = NET_IPV4_TCP_RETRIES2,
428 .procname = "tcp_retries2",
429 .data = &sysctl_tcp_retries2,
430 .maxlen = sizeof(int),
432 .proc_handler = &proc_dointvec
435 .ctl_name = NET_IPV4_TCP_FIN_TIMEOUT,
436 .procname = "tcp_fin_timeout",
437 .data = &sysctl_tcp_fin_timeout,
438 .maxlen = sizeof(int),
440 .proc_handler = &proc_dointvec_jiffies,
441 .strategy = &sysctl_jiffies
443 #ifdef CONFIG_SYN_COOKIES
445 .ctl_name = NET_TCP_SYNCOOKIES,
446 .procname = "tcp_syncookies",
447 .data = &sysctl_tcp_syncookies,
448 .maxlen = sizeof(int),
450 .proc_handler = &proc_dointvec
454 .ctl_name = NET_TCP_TW_RECYCLE,
455 .procname = "tcp_tw_recycle",
456 .data = &tcp_death_row.sysctl_tw_recycle,
457 .maxlen = sizeof(int),
459 .proc_handler = &proc_dointvec
462 .ctl_name = NET_TCP_ABORT_ON_OVERFLOW,
463 .procname = "tcp_abort_on_overflow",
464 .data = &sysctl_tcp_abort_on_overflow,
465 .maxlen = sizeof(int),
467 .proc_handler = &proc_dointvec
470 .ctl_name = NET_TCP_STDURG,
471 .procname = "tcp_stdurg",
472 .data = &sysctl_tcp_stdurg,
473 .maxlen = sizeof(int),
475 .proc_handler = &proc_dointvec
478 .ctl_name = NET_TCP_RFC1337,
479 .procname = "tcp_rfc1337",
480 .data = &sysctl_tcp_rfc1337,
481 .maxlen = sizeof(int),
483 .proc_handler = &proc_dointvec
486 .ctl_name = NET_TCP_MAX_SYN_BACKLOG,
487 .procname = "tcp_max_syn_backlog",
488 .data = &sysctl_max_syn_backlog,
489 .maxlen = sizeof(int),
491 .proc_handler = &proc_dointvec
494 .ctl_name = NET_IPV4_LOCAL_PORT_RANGE,
495 .procname = "ip_local_port_range",
496 .data = &sysctl_local_port_range,
497 .maxlen = sizeof(sysctl_local_port_range),
499 .proc_handler = &ipv4_local_port_range,
500 .strategy = &ipv4_sysctl_local_port_range,
503 .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_ALL,
504 .procname = "icmp_echo_ignore_all",
505 .data = &sysctl_icmp_echo_ignore_all,
506 .maxlen = sizeof(int),
508 .proc_handler = &proc_dointvec
511 .ctl_name = NET_IPV4_ICMP_ECHO_IGNORE_BROADCASTS,
512 .procname = "icmp_echo_ignore_broadcasts",
513 .data = &sysctl_icmp_echo_ignore_broadcasts,
514 .maxlen = sizeof(int),
516 .proc_handler = &proc_dointvec
519 .ctl_name = NET_IPV4_ICMP_IGNORE_BOGUS_ERROR_RESPONSES,
520 .procname = "icmp_ignore_bogus_error_responses",
521 .data = &sysctl_icmp_ignore_bogus_error_responses,
522 .maxlen = sizeof(int),
524 .proc_handler = &proc_dointvec
527 .ctl_name = NET_IPV4_ICMP_ERRORS_USE_INBOUND_IFADDR,
528 .procname = "icmp_errors_use_inbound_ifaddr",
529 .data = &sysctl_icmp_errors_use_inbound_ifaddr,
530 .maxlen = sizeof(int),
532 .proc_handler = &proc_dointvec
535 .ctl_name = NET_IPV4_ROUTE,
539 .child = ipv4_route_table
541 #ifdef CONFIG_IP_MULTICAST
543 .ctl_name = NET_IPV4_IGMP_MAX_MEMBERSHIPS,
544 .procname = "igmp_max_memberships",
545 .data = &sysctl_igmp_max_memberships,
546 .maxlen = sizeof(int),
548 .proc_handler = &proc_dointvec
553 .ctl_name = NET_IPV4_IGMP_MAX_MSF,
554 .procname = "igmp_max_msf",
555 .data = &sysctl_igmp_max_msf,
556 .maxlen = sizeof(int),
558 .proc_handler = &proc_dointvec
561 .ctl_name = NET_IPV4_INET_PEER_THRESHOLD,
562 .procname = "inet_peer_threshold",
563 .data = &inet_peer_threshold,
564 .maxlen = sizeof(int),
566 .proc_handler = &proc_dointvec
569 .ctl_name = NET_IPV4_INET_PEER_MINTTL,
570 .procname = "inet_peer_minttl",
571 .data = &inet_peer_minttl,
572 .maxlen = sizeof(int),
574 .proc_handler = &proc_dointvec_jiffies,
575 .strategy = &sysctl_jiffies
578 .ctl_name = NET_IPV4_INET_PEER_MAXTTL,
579 .procname = "inet_peer_maxttl",
580 .data = &inet_peer_maxttl,
581 .maxlen = sizeof(int),
583 .proc_handler = &proc_dointvec_jiffies,
584 .strategy = &sysctl_jiffies
587 .ctl_name = NET_IPV4_INET_PEER_GC_MINTIME,
588 .procname = "inet_peer_gc_mintime",
589 .data = &inet_peer_gc_mintime,
590 .maxlen = sizeof(int),
592 .proc_handler = &proc_dointvec_jiffies,
593 .strategy = &sysctl_jiffies
596 .ctl_name = NET_IPV4_INET_PEER_GC_MAXTIME,
597 .procname = "inet_peer_gc_maxtime",
598 .data = &inet_peer_gc_maxtime,
599 .maxlen = sizeof(int),
601 .proc_handler = &proc_dointvec_jiffies,
602 .strategy = &sysctl_jiffies
605 .ctl_name = NET_TCP_ORPHAN_RETRIES,
606 .procname = "tcp_orphan_retries",
607 .data = &sysctl_tcp_orphan_retries,
608 .maxlen = sizeof(int),
610 .proc_handler = &proc_dointvec
613 .ctl_name = NET_TCP_FACK,
614 .procname = "tcp_fack",
615 .data = &sysctl_tcp_fack,
616 .maxlen = sizeof(int),
618 .proc_handler = &proc_dointvec
621 .ctl_name = NET_TCP_REORDERING,
622 .procname = "tcp_reordering",
623 .data = &sysctl_tcp_reordering,
624 .maxlen = sizeof(int),
626 .proc_handler = &proc_dointvec
629 .ctl_name = NET_TCP_ECN,
630 .procname = "tcp_ecn",
631 .data = &sysctl_tcp_ecn,
632 .maxlen = sizeof(int),
634 .proc_handler = &proc_dointvec
637 .ctl_name = NET_TCP_DSACK,
638 .procname = "tcp_dsack",
639 .data = &sysctl_tcp_dsack,
640 .maxlen = sizeof(int),
642 .proc_handler = &proc_dointvec
645 .ctl_name = NET_TCP_MEM,
646 .procname = "tcp_mem",
647 .data = &sysctl_tcp_mem,
648 .maxlen = sizeof(sysctl_tcp_mem),
650 .proc_handler = &proc_dointvec
653 .ctl_name = NET_TCP_WMEM,
654 .procname = "tcp_wmem",
655 .data = &sysctl_tcp_wmem,
656 .maxlen = sizeof(sysctl_tcp_wmem),
658 .proc_handler = &proc_dointvec
661 .ctl_name = NET_TCP_RMEM,
662 .procname = "tcp_rmem",
663 .data = &sysctl_tcp_rmem,
664 .maxlen = sizeof(sysctl_tcp_rmem),
666 .proc_handler = &proc_dointvec
669 .ctl_name = NET_TCP_APP_WIN,
670 .procname = "tcp_app_win",
671 .data = &sysctl_tcp_app_win,
672 .maxlen = sizeof(int),
674 .proc_handler = &proc_dointvec
677 .ctl_name = NET_TCP_ADV_WIN_SCALE,
678 .procname = "tcp_adv_win_scale",
679 .data = &sysctl_tcp_adv_win_scale,
680 .maxlen = sizeof(int),
682 .proc_handler = &proc_dointvec
685 .ctl_name = NET_IPV4_ICMP_RATELIMIT,
686 .procname = "icmp_ratelimit",
687 .data = &sysctl_icmp_ratelimit,
688 .maxlen = sizeof(int),
690 .proc_handler = &proc_dointvec
693 .ctl_name = NET_IPV4_ICMP_RATEMASK,
694 .procname = "icmp_ratemask",
695 .data = &sysctl_icmp_ratemask,
696 .maxlen = sizeof(int),
698 .proc_handler = &proc_dointvec
701 .ctl_name = NET_TCP_TW_REUSE,
702 .procname = "tcp_tw_reuse",
703 .data = &sysctl_tcp_tw_reuse,
704 .maxlen = sizeof(int),
706 .proc_handler = &proc_dointvec
709 .ctl_name = NET_TCP_FRTO,
710 .procname = "tcp_frto",
711 .data = &sysctl_tcp_frto,
712 .maxlen = sizeof(int),
714 .proc_handler = &proc_dointvec
717 .ctl_name = NET_TCP_FRTO_RESPONSE,
718 .procname = "tcp_frto_response",
719 .data = &sysctl_tcp_frto_response,
720 .maxlen = sizeof(int),
722 .proc_handler = &proc_dointvec
725 .ctl_name = NET_TCP_LOW_LATENCY,
726 .procname = "tcp_low_latency",
727 .data = &sysctl_tcp_low_latency,
728 .maxlen = sizeof(int),
730 .proc_handler = &proc_dointvec
733 .ctl_name = NET_IPV4_IPFRAG_SECRET_INTERVAL,
734 .procname = "ipfrag_secret_interval",
735 .data = &sysctl_ipfrag_secret_interval,
736 .maxlen = sizeof(int),
738 .proc_handler = &proc_dointvec_jiffies,
739 .strategy = &sysctl_jiffies
742 .ctl_name = NET_IPV4_IPFRAG_MAX_DIST,
743 .procname = "ipfrag_max_dist",
744 .data = &sysctl_ipfrag_max_dist,
745 .maxlen = sizeof(int),
747 .proc_handler = &proc_dointvec_minmax,
751 .ctl_name = NET_TCP_NO_METRICS_SAVE,
752 .procname = "tcp_no_metrics_save",
753 .data = &sysctl_tcp_nometrics_save,
754 .maxlen = sizeof(int),
756 .proc_handler = &proc_dointvec,
759 .ctl_name = NET_TCP_MODERATE_RCVBUF,
760 .procname = "tcp_moderate_rcvbuf",
761 .data = &sysctl_tcp_moderate_rcvbuf,
762 .maxlen = sizeof(int),
764 .proc_handler = &proc_dointvec,
767 .ctl_name = NET_TCP_TSO_WIN_DIVISOR,
768 .procname = "tcp_tso_win_divisor",
769 .data = &sysctl_tcp_tso_win_divisor,
770 .maxlen = sizeof(int),
772 .proc_handler = &proc_dointvec,
775 .ctl_name = NET_TCP_CONG_CONTROL,
776 .procname = "tcp_congestion_control",
778 .maxlen = TCP_CA_NAME_MAX,
779 .proc_handler = &proc_tcp_congestion_control,
780 .strategy = &sysctl_tcp_congestion_control,
783 .ctl_name = NET_TCP_ABC,
784 .procname = "tcp_abc",
785 .data = &sysctl_tcp_abc,
786 .maxlen = sizeof(int),
788 .proc_handler = &proc_dointvec,
791 .ctl_name = NET_TCP_MTU_PROBING,
792 .procname = "tcp_mtu_probing",
793 .data = &sysctl_tcp_mtu_probing,
794 .maxlen = sizeof(int),
796 .proc_handler = &proc_dointvec,
799 .ctl_name = NET_TCP_BASE_MSS,
800 .procname = "tcp_base_mss",
801 .data = &sysctl_tcp_base_mss,
802 .maxlen = sizeof(int),
804 .proc_handler = &proc_dointvec,
807 .ctl_name = NET_IPV4_TCP_WORKAROUND_SIGNED_WINDOWS,
808 .procname = "tcp_workaround_signed_windows",
809 .data = &sysctl_tcp_workaround_signed_windows,
810 .maxlen = sizeof(int),
812 .proc_handler = &proc_dointvec
814 #ifdef CONFIG_NET_DMA
816 .ctl_name = NET_TCP_DMA_COPYBREAK,
817 .procname = "tcp_dma_copybreak",
818 .data = &sysctl_tcp_dma_copybreak,
819 .maxlen = sizeof(int),
821 .proc_handler = &proc_dointvec
825 .ctl_name = NET_TCP_SLOW_START_AFTER_IDLE,
826 .procname = "tcp_slow_start_after_idle",
827 .data = &sysctl_tcp_slow_start_after_idle,
828 .maxlen = sizeof(int),
830 .proc_handler = &proc_dointvec
832 #ifdef CONFIG_NETLABEL
834 .ctl_name = NET_CIPSOV4_CACHE_ENABLE,
835 .procname = "cipso_cache_enable",
836 .data = &cipso_v4_cache_enabled,
837 .maxlen = sizeof(int),
839 .proc_handler = &proc_dointvec,
842 .ctl_name = NET_CIPSOV4_CACHE_BUCKET_SIZE,
843 .procname = "cipso_cache_bucket_size",
844 .data = &cipso_v4_cache_bucketsize,
845 .maxlen = sizeof(int),
847 .proc_handler = &proc_dointvec,
850 .ctl_name = NET_CIPSOV4_RBM_OPTFMT,
851 .procname = "cipso_rbm_optfmt",
852 .data = &cipso_v4_rbm_optfmt,
853 .maxlen = sizeof(int),
855 .proc_handler = &proc_dointvec,
858 .ctl_name = NET_CIPSOV4_RBM_STRICTVALID,
859 .procname = "cipso_rbm_strictvalid",
860 .data = &cipso_v4_rbm_strictvalid,
861 .maxlen = sizeof(int),
863 .proc_handler = &proc_dointvec,
865 #endif /* CONFIG_NETLABEL */
867 .ctl_name = NET_TCP_AVAIL_CONG_CONTROL,
868 .procname = "tcp_available_congestion_control",
869 .maxlen = TCP_CA_BUF_MAX,
871 .proc_handler = &proc_tcp_available_congestion_control,
874 .ctl_name = NET_TCP_ALLOWED_CONG_CONTROL,
875 .procname = "tcp_allowed_congestion_control",
876 .maxlen = TCP_CA_BUF_MAX,
878 .proc_handler = &proc_allowed_congestion_control,
879 .strategy = &strategy_allowed_congestion_control,
882 .ctl_name = NET_TCP_MAX_SSTHRESH,
883 .procname = "tcp_max_ssthresh",
884 .data = &sysctl_tcp_max_ssthresh,
885 .maxlen = sizeof(int),
887 .proc_handler = &proc_dointvec,
892 #endif /* CONFIG_SYSCTL */
894 EXPORT_SYMBOL(ipv4_config);