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8b1568ff6e
freebsd/sys/netinet/sctp_sysctl.c
Randall Stewart 5f26a41d17 - Fixes a case where doing a sysctl would leave locks held 
when coping out association data.
- Fixes a small bug that prevented the SCTP_UNORDERED indication
  from going up to the app on a recv in the sinfo_flags field.
2007-06-06 00:40:41 +00:00

690 lines
23 KiB
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/*-
* Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* a) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* b) Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
*
* c) Neither the name of Cisco Systems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <netinet/sctp_os.h>
#include <netinet/sctp_constants.h>
#include <netinet/sctp_sysctl.h>
#include <netinet/sctp_pcb.h>
#include <netinet/sctputil.h>
#include <netinet/sctp_output.h>
/*
* sysctl tunable variables
*/
uint32_t sctp_sendspace = (128 * 1024);
uint32_t sctp_recvspace = 128 * (1024 +
#ifdef INET6
sizeof(struct sockaddr_in6)
#else
sizeof(struct sockaddr_in)
#endif
);
uint32_t sctp_mbuf_threshold_count = SCTP_DEFAULT_MBUFS_IN_CHAIN;
uint32_t sctp_auto_asconf = SCTP_DEFAULT_AUTO_ASCONF;
uint32_t sctp_ecn_enable = 1;
uint32_t sctp_ecn_nonce = 0;
uint32_t sctp_strict_sacks = 0;
uint32_t sctp_no_csum_on_loopback = 1;
uint32_t sctp_strict_init = 1;
uint32_t sctp_abort_if_one_2_one_hits_limit = 0;
uint32_t sctp_strict_data_order = 0;
uint32_t sctp_peer_chunk_oh = sizeof(struct mbuf);
uint32_t sctp_max_burst_default = SCTP_DEF_MAX_BURST;
uint32_t sctp_use_cwnd_based_maxburst = 1;
uint32_t sctp_do_drain = 1;
uint32_t sctp_hb_maxburst = SCTP_DEF_MAX_BURST;
uint32_t sctp_max_chunks_on_queue = SCTP_ASOC_MAX_CHUNKS_ON_QUEUE;
uint32_t sctp_delayed_sack_time_default = SCTP_RECV_MSEC;
uint32_t sctp_sack_freq_default = SCTP_DEFAULT_SACK_FREQ;
uint32_t sctp_heartbeat_interval_default = SCTP_HB_DEFAULT_MSEC;
uint32_t sctp_pmtu_raise_time_default = SCTP_DEF_PMTU_RAISE_SEC;
uint32_t sctp_shutdown_guard_time_default = SCTP_DEF_MAX_SHUTDOWN_SEC;
uint32_t sctp_secret_lifetime_default = SCTP_DEFAULT_SECRET_LIFE_SEC;
uint32_t sctp_rto_max_default = SCTP_RTO_UPPER_BOUND;
uint32_t sctp_rto_min_default = SCTP_RTO_LOWER_BOUND;
uint32_t sctp_rto_initial_default = SCTP_RTO_INITIAL;
uint32_t sctp_init_rto_max_default = SCTP_RTO_UPPER_BOUND;
uint32_t sctp_valid_cookie_life_default = SCTP_DEFAULT_COOKIE_LIFE;
uint32_t sctp_init_rtx_max_default = SCTP_DEF_MAX_INIT;
uint32_t sctp_assoc_rtx_max_default = SCTP_DEF_MAX_SEND;
uint32_t sctp_path_rtx_max_default = SCTP_DEF_MAX_PATH_RTX;
uint32_t sctp_nr_outgoing_streams_default = SCTP_OSTREAM_INITIAL;
uint32_t sctp_add_more_threshold = SCTP_DEFAULT_ADD_MORE;
uint32_t sctp_asoc_free_resc_limit = SCTP_DEF_ASOC_RESC_LIMIT;
uint32_t sctp_system_free_resc_limit = SCTP_DEF_SYSTEM_RESC_LIMIT;
uint32_t sctp_min_split_point = SCTP_DEFAULT_SPLIT_POINT_MIN;
uint32_t sctp_pcbtblsize = SCTP_PCBHASHSIZE;
uint32_t sctp_hashtblsize = SCTP_TCBHASHSIZE;
uint32_t sctp_chunkscale = SCTP_CHUNKQUEUE_SCALE;
uint32_t sctp_cmt_on_off = 0;
uint32_t sctp_cmt_use_dac = 0;
uint32_t sctp_max_retran_chunk = SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT;
uint32_t sctp_L2_abc_variable = 1;
uint32_t sctp_early_fr = 0;
uint32_t sctp_early_fr_msec = SCTP_MINFR_MSEC_TIMER;
uint32_t sctp_says_check_for_deadlock = 0;
uint32_t sctp_asconf_auth_nochk = 0;
uint32_t sctp_auth_disable = 0;
uint32_t sctp_nat_friendly = 1;
uint32_t sctp_min_residual = SCTPCTL_MIN_RESIDUAL_DEFAULT;;
struct sctpstat sctpstat;
#ifdef SCTP_DEBUG
uint32_t sctp_debug_on = 0;
#endif
/* It returns an upper limit. No filtering is done here */
static unsigned int
number_of_addresses(struct sctp_inpcb *inp)
{
int cnt;
struct sctp_vrf *vrf;
struct sctp_ifn *sctp_ifn;
struct sctp_ifa *sctp_ifa;
struct sctp_laddr *laddr;
cnt = 0;
/* neither Mac OS X nor FreeBSD support mulitple routing functions */
if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
return (0);
}
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
if ((sctp_ifa->address.sa.sa_family == AF_INET) ||
(sctp_ifa->address.sa.sa_family == AF_INET6)) {
cnt++;
}
}
}
} else {
LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
if ((laddr->ifa->address.sa.sa_family == AF_INET) ||
(laddr->ifa->address.sa.sa_family == AF_INET6)) {
cnt++;
}
}
}
return (cnt);
}
static int
copy_out_local_addresses(struct sctp_inpcb *inp, struct sctp_tcb *stcb, struct sysctl_req *req)
{
struct sctp_ifn *sctp_ifn;
struct sctp_ifa *sctp_ifa;
int loopback_scope, ipv4_local_scope, local_scope, site_scope;
int ipv4_addr_legal, ipv6_addr_legal;
struct sctp_vrf *vrf;
struct xsctp_laddr xladdr;
struct sctp_laddr *laddr;
int error;
/* Turn on all the appropriate scope */
if (stcb) {
/* use association specific values */
loopback_scope = stcb->asoc.loopback_scope;
ipv4_local_scope = stcb->asoc.ipv4_local_scope;
local_scope = stcb->asoc.local_scope;
site_scope = stcb->asoc.site_scope;
} else {
/* use generic values for endpoints */
loopback_scope = 1;
ipv4_local_scope = 1;
local_scope = 1;
site_scope = 1;
}
/* use only address families of interest */
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
ipv6_addr_legal = 1;
if (SCTP_IPV6_V6ONLY(inp)) {
ipv4_addr_legal = 0;
} else {
ipv4_addr_legal = 1;
}
} else {
ipv4_addr_legal = 1;
ipv6_addr_legal = 0;
}
error = 0;
/* neither Mac OS X nor FreeBSD support mulitple routing functions */
if ((vrf = sctp_find_vrf(inp->def_vrf_id)) == NULL) {
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
return (-1);
}
if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
if ((loopback_scope == 0) && SCTP_IFN_IS_IFT_LOOP(sctp_ifn))
/* Skip loopback if loopback_scope not set */
continue;
LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
if (stcb) {
/*
* ignore if blacklisted at
* association level
*/
if (sctp_is_addr_restricted(stcb, sctp_ifa))
continue;
}
if ((sctp_ifa->address.sa.sa_family == AF_INET) && (ipv4_addr_legal)) {
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
if (sin->sin_addr.s_addr == 0)
continue;
if ((ipv4_local_scope == 0) && (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)))
continue;
} else if ((sctp_ifa->address.sa.sa_family == AF_INET6) && (ipv6_addr_legal)) {
struct sockaddr_in6 *sin6;
sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
continue;
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
if (local_scope == 0)
continue;
if (sin6->sin6_scope_id == 0) {
/*
* bad link local
* address
*/
if (sa6_recoverscope(sin6) != 0)
continue;
}
}
if ((site_scope == 0) && (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)))
continue;
} else
continue;
memset((void *)&xladdr, 0, sizeof(union sctp_sockstore));
memcpy((void *)&xladdr.address, (const void *)&sctp_ifa->address, sizeof(union sctp_sockstore));
(void)SCTP_GETTIME_TIMEVAL(&xladdr.start_time);
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
if (error)
return (error);
else {
SCTP_INP_INFO_RLOCK();
SCTP_INP_RLOCK(inp);
}
}
}
} else {
LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
/* ignore if blacklisted at association level */
if (stcb && sctp_is_addr_restricted(stcb, laddr->ifa))
continue;
memset((void *)&xladdr, 0, sizeof(union sctp_sockstore));
memcpy((void *)&xladdr.address, (const void *)&laddr->ifa->address, sizeof(union sctp_sockstore));
xladdr.start_time = laddr->start_time;
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
if (error)
return (error);
else {
SCTP_INP_INFO_RLOCK();
SCTP_INP_RLOCK(inp);
}
}
}
memset((void *)&xladdr, 0, sizeof(union sctp_sockstore));
xladdr.last = 1;
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
error = SYSCTL_OUT(req, &xladdr, sizeof(struct xsctp_laddr));
if (error)
return (error);
else {
SCTP_INP_INFO_RLOCK();
SCTP_INP_RLOCK(inp);
return (0);
}
}
/*
* sysctl functions
*/
static int
sctp_assoclist(SYSCTL_HANDLER_ARGS)
{
unsigned int number_of_endpoints;
unsigned int number_of_local_addresses;
unsigned int number_of_associations;
unsigned int number_of_remote_addresses;
unsigned int n;
int error;
struct sctp_inpcb *inp;
struct sctp_tcb *stcb;
struct sctp_nets *net;
struct xsctp_inpcb xinpcb;
struct xsctp_tcb xstcb;
struct xsctp_raddr xraddr;
number_of_endpoints = 0;
number_of_local_addresses = 0;
number_of_associations = 0;
number_of_remote_addresses = 0;
SCTP_INP_INFO_RLOCK();
if (req->oldptr == USER_ADDR_NULL) {
LIST_FOREACH(inp, &sctppcbinfo.listhead, sctp_list) {
SCTP_INP_RLOCK(inp);
number_of_endpoints++;
number_of_local_addresses += number_of_addresses(inp);
LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
number_of_associations++;
number_of_local_addresses += number_of_addresses(inp);
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
number_of_remote_addresses++;
}
}
SCTP_INP_RUNLOCK(inp);
}
SCTP_INP_INFO_RUNLOCK();
n = (number_of_endpoints + 1) * sizeof(struct xsctp_inpcb) +
(number_of_local_addresses + number_of_endpoints + number_of_associations) * sizeof(struct xsctp_laddr) +
(number_of_associations + number_of_endpoints) * sizeof(struct xsctp_tcb) +
(number_of_remote_addresses + number_of_associations) * sizeof(struct xsctp_raddr);
/* request some more memory than needed */
req->oldidx = (n + n / 8);
return 0;
}
if (req->newptr != USER_ADDR_NULL) {
SCTP_INP_INFO_RUNLOCK();
return EPERM;
}
LIST_FOREACH(inp, &sctppcbinfo.listhead, sctp_list) {
SCTP_INP_RLOCK(inp);
xinpcb.last = 0;
xinpcb.local_port = ntohs(inp->sctp_lport);
xinpcb.flags = inp->sctp_flags;
xinpcb.features = inp->sctp_features;
xinpcb.total_sends = inp->total_sends;
xinpcb.total_recvs = inp->total_recvs;
xinpcb.total_nospaces = inp->total_nospaces;
xinpcb.fragmentation_point = inp->sctp_frag_point;
xinpcb.qlen = inp->sctp_socket->so_qlen;
xinpcb.maxqlen = inp->sctp_socket->so_qlimit;
SCTP_INP_INCR_REF(inp);
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
if (error) {
SCTP_INP_DECR_REF(inp);
return error;
}
SCTP_INP_INFO_RLOCK();
SCTP_INP_RLOCK(inp);
error = copy_out_local_addresses(inp, NULL, req);
if (error) {
SCTP_INP_DECR_REF(inp);
return error;
}
LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
SCTP_TCB_LOCK(stcb);
atomic_add_int(&stcb->asoc.refcnt, 1);
SCTP_TCB_UNLOCK(stcb);
xstcb.last = 0;
xstcb.local_port = ntohs(inp->sctp_lport);
xstcb.remote_port = ntohs(stcb->rport);
if (stcb->asoc.primary_destination != NULL)
xstcb.primary_addr = stcb->asoc.primary_destination->ro._l_addr;
xstcb.heartbeat_interval = stcb->asoc.heart_beat_delay;
xstcb.state = SCTP_GET_STATE(&stcb->asoc); /* FIXME */
xstcb.in_streams = stcb->asoc.streamincnt;
xstcb.out_streams = stcb->asoc.streamoutcnt;
xstcb.max_nr_retrans = stcb->asoc.overall_error_count;
xstcb.primary_process = 0; /* not really supported
* yet */
xstcb.T1_expireries = stcb->asoc.timoinit + stcb->asoc.timocookie;
xstcb.T2_expireries = stcb->asoc.timoshutdown + stcb->asoc.timoshutdownack;
xstcb.retransmitted_tsns = stcb->asoc.marked_retrans;
xstcb.start_time = stcb->asoc.start_time;
xstcb.discontinuity_time = stcb->asoc.discontinuity_time;
xstcb.total_sends = stcb->total_sends;
xstcb.total_recvs = stcb->total_recvs;
xstcb.local_tag = stcb->asoc.my_vtag;
xstcb.remote_tag = stcb->asoc.peer_vtag;
xstcb.initial_tsn = stcb->asoc.init_seq_number;
xstcb.highest_tsn = stcb->asoc.sending_seq - 1;
xstcb.cumulative_tsn = stcb->asoc.last_acked_seq;
xstcb.cumulative_tsn_ack = stcb->asoc.cumulative_tsn;
xstcb.mtu = stcb->asoc.smallest_mtu;
xstcb.refcnt = stcb->asoc.refcnt;
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
if (error) {
SCTP_INP_DECR_REF(inp);
atomic_add_int(&stcb->asoc.refcnt, -1);
return error;
}
SCTP_INP_INFO_RLOCK();
SCTP_INP_RLOCK(inp);
error = copy_out_local_addresses(inp, stcb, req);
if (error) {
SCTP_INP_DECR_REF(inp);
atomic_add_int(&stcb->asoc.refcnt, -1);
return error;
}
TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
xraddr.last = 0;
xraddr.address = net->ro._l_addr;
xraddr.active = ((net->dest_state & SCTP_ADDR_REACHABLE) == SCTP_ADDR_REACHABLE);
xraddr.confirmed = ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0);
xraddr.heartbeat_enabled = ((net->dest_state & SCTP_ADDR_NOHB) == 0);
xraddr.rto = net->RTO;
xraddr.max_path_rtx = net->failure_threshold;
xraddr.rtx = net->marked_retrans;
xraddr.error_counter = net->error_count;
xraddr.cwnd = net->cwnd;
xraddr.flight_size = net->flight_size;
xraddr.mtu = net->mtu;
xraddr.start_time = net->start_time;
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
if (error) {
SCTP_INP_DECR_REF(inp);
atomic_add_int(&stcb->asoc.refcnt, -1);
return error;
}
SCTP_INP_INFO_RLOCK();
SCTP_INP_RLOCK(inp);
}
atomic_add_int(&stcb->asoc.refcnt, -1);
memset((void *)&xraddr, 0, sizeof(struct xsctp_raddr));
xraddr.last = 1;
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
error = SYSCTL_OUT(req, &xraddr, sizeof(struct xsctp_raddr));
if (error) {
SCTP_INP_DECR_REF(inp);
return error;
}
SCTP_INP_INFO_RLOCK();
SCTP_INP_RLOCK(inp);
}
SCTP_INP_RUNLOCK(inp);
SCTP_INP_INFO_RUNLOCK();
memset((void *)&xstcb, 0, sizeof(struct xsctp_tcb));
xstcb.last = 1;
error = SYSCTL_OUT(req, &xstcb, sizeof(struct xsctp_tcb));
if (error) {
return error;
}
SCTP_INP_INFO_RLOCK();
SCTP_INP_DECR_REF(inp);
}
SCTP_INP_INFO_RUNLOCK();
memset((void *)&xinpcb, 0, sizeof(struct xsctp_inpcb));
xinpcb.last = 1;
error = SYSCTL_OUT(req, &xinpcb, sizeof(struct xsctp_inpcb));
return error;
}
/*
* sysctl definitions
*/
SYSCTL_INT(_net_inet_sctp, OID_AUTO, sendspace, CTLFLAG_RW,
&sctp_sendspace, 0, "Maximum outgoing SCTP buffer size");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, recvspace, CTLFLAG_RW,
&sctp_recvspace, 0, "Maximum incoming SCTP buffer size");
#if defined(__FreeBSD__) || defined(SCTP_APPLE_AUTO_ASCONF)
SYSCTL_INT(_net_inet_sctp, OID_AUTO, auto_asconf, CTLFLAG_RW,
&sctp_auto_asconf, 0, "Enable SCTP Auto-ASCONF");
#endif
SYSCTL_INT(_net_inet_sctp, OID_AUTO, ecn_enable, CTLFLAG_RW,
&sctp_ecn_enable, 0, "Enable SCTP ECN");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, ecn_nonce, CTLFLAG_RW,
&sctp_ecn_nonce, 0, "Enable SCTP ECN Nonce");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, strict_sacks, CTLFLAG_RW,
&sctp_strict_sacks, 0, "Enable SCTP Strict SACK checking");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, loopback_nocsum, CTLFLAG_RW,
&sctp_no_csum_on_loopback, 0,
"Enable NO Csum on packets sent on loopback");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, strict_init, CTLFLAG_RW,
&sctp_strict_init, 0,
"Enable strict INIT/INIT-ACK singleton enforcement");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, peer_chkoh, CTLFLAG_RW,
&sctp_peer_chunk_oh, 0,
"Amount to debit peers rwnd per chunk sent");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, maxburst, CTLFLAG_RW,
&sctp_max_burst_default, 0,
"Default max burst for sctp endpoints");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, maxchunks, CTLFLAG_RW,
&sctp_max_chunks_on_queue, 0,
"Default max chunks on queue per asoc");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, tcbhashsize, CTLFLAG_RW,
&sctp_hashtblsize, 0,
"Tuneable for Hash table sizes");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, min_split_point, CTLFLAG_RW,
&sctp_min_split_point, 0,
"Minimum size when splitting a chunk");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, pcbhashsize, CTLFLAG_RW,
&sctp_pcbtblsize, 0,
"Tuneable for PCB Hash table sizes");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, sys_resource, CTLFLAG_RW,
&sctp_system_free_resc_limit, 0,
"Max number of cached resources in the system");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, asoc_resource, CTLFLAG_RW,
&sctp_asoc_free_resc_limit, 0,
"Max number of cached resources in an asoc");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, chunkscale, CTLFLAG_RW,
&sctp_chunkscale, 0,
"Tuneable for Scaling of number of chunks and messages");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, delayed_sack_time, CTLFLAG_RW,
&sctp_delayed_sack_time_default, 0,
"Default delayed SACK timer in msec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, sack_freq, CTLFLAG_RW,
&sctp_sack_freq_default, 0,
"Default SACK frequency");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, heartbeat_interval, CTLFLAG_RW,
&sctp_heartbeat_interval_default, 0,
"Default heartbeat interval in msec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, pmtu_raise_time, CTLFLAG_RW,
&sctp_pmtu_raise_time_default, 0,
"Default PMTU raise timer in sec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, shutdown_guard_time, CTLFLAG_RW,
&sctp_shutdown_guard_time_default, 0,
"Default shutdown guard timer in sec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, secret_lifetime, CTLFLAG_RW,
&sctp_secret_lifetime_default, 0,
"Default secret lifetime in sec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, rto_max, CTLFLAG_RW,
&sctp_rto_max_default, 0,
"Default maximum retransmission timeout in msec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, rto_min, CTLFLAG_RW,
&sctp_rto_min_default, 0,
"Default minimum retransmission timeout in msec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, rto_initial, CTLFLAG_RW,
&sctp_rto_initial_default, 0,
"Default initial retransmission timeout in msec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, init_rto_max, CTLFLAG_RW,
&sctp_init_rto_max_default, 0,
"Default maximum retransmission timeout during association setup in msec");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, valid_cookie_life, CTLFLAG_RW,
&sctp_valid_cookie_life_default, 0,
"Default cookie lifetime in ticks");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, init_rtx_max, CTLFLAG_RW,
&sctp_init_rtx_max_default, 0,
"Default maximum number of retransmission for INIT chunks");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, assoc_rtx_max, CTLFLAG_RW,
&sctp_assoc_rtx_max_default, 0,
"Default maximum number of retransmissions per association");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, path_rtx_max, CTLFLAG_RW,
&sctp_path_rtx_max_default, 0,
"Default maximum of retransmissions per path");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, add_more_on_output, CTLFLAG_RW,
&sctp_add_more_threshold, 0,
"When space wise is it worthwhile to try to add more to a socket send buffer");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, outgoing_streams, CTLFLAG_RW,
&sctp_nr_outgoing_streams_default, 0,
"Default number of outgoing streams");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, cmt_on_off, CTLFLAG_RW,
&sctp_cmt_on_off, 0,
"CMT ON/OFF flag");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, cwnd_maxburst, CTLFLAG_RW,
&sctp_use_cwnd_based_maxburst, 0,
"Use a CWND adjusting maxburst");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, early_fast_retran, CTLFLAG_RW,
&sctp_early_fr, 0,
"Early Fast Retransmit with timer");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, deadlock_detect, CTLFLAG_RW,
&sctp_says_check_for_deadlock, 0,
"SMP Deadlock detection on/off");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, early_fast_retran_msec, CTLFLAG_RW,
&sctp_early_fr_msec, 0,
"Early Fast Retransmit minimum timer value");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, asconf_auth_nochk, CTLFLAG_RW,
&sctp_asconf_auth_nochk, 0,
"Disable SCTP ASCONF AUTH requirement");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, auth_disable, CTLFLAG_RW,
&sctp_auth_disable, 0,
"Disable SCTP AUTH function");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, nat_friendly, CTLFLAG_RW,
&sctp_nat_friendly, 0,
"SCTP NAT friendly operation");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, abc_l_var, CTLFLAG_RW,
&sctp_L2_abc_variable, 0,
"SCTP ABC max increase per SACK (L)");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, max_chained_mbufs, CTLFLAG_RW,
&sctp_mbuf_threshold_count, 0,
"Default max number of small mbufs on a chain");
SYSCTL_UINT(_net_inet_sctp, OID_AUTO, cmt_use_dac, CTLFLAG_RW,
&sctp_cmt_use_dac, 0,
"CMT DAC ON/OFF flag");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, do_sctp_drain, CTLFLAG_RW,
&sctp_do_drain, 0,
"Should SCTP respond to the drain calls");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, hb_max_burst, CTLFLAG_RW,
&sctp_hb_maxburst, 0,
"Confirmation Heartbeat max burst?");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, abort_at_limit, CTLFLAG_RW,
&sctp_abort_if_one_2_one_hits_limit, 0,
"When one-2-one hits qlimit abort");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, strict_data_order, CTLFLAG_RW,
&sctp_strict_data_order, 0,
"Enforce strict data ordering, abort if control inside data");
SYSCTL_STRUCT(_net_inet_sctp, OID_AUTO, stats, CTLFLAG_RW,
&sctpstat, sctpstat,
"SCTP statistics (struct sctps_stat, netinet/sctp.h");
SYSCTL_PROC(_net_inet_sctp, OID_AUTO, assoclist, CTLFLAG_RD,
0, 0, sctp_assoclist,
"S,xassoc", "List of active SCTP associations");
SYSCTL_INT(_net_inet_sctp, OID_AUTO, min_residual, CTLFLAG_RW,
&sctp_min_residual, 0,
SCTPCTL_MIN_RESIDUAL_DESC);
SYSCTL_INT(_net_inet_sctp, OID_AUTO, max_retran_chunk, CTLFLAG_RW,
&sctp_max_retran_chunk, 0,
SCTPCTL_MAX_RETRAN_CHUNK_DESC);
#ifdef SCTP_DEBUG
SYSCTL_INT(_net_inet_sctp, OID_AUTO, debug, CTLFLAG_RW,
&sctp_debug_on, 0, "Configure debug output");
#endif /* SCTP_DEBUG */
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