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      1 /*-
      2  * Copyright (c) 2007, by Cisco Systems, Inc. All rights reserved.
      3  * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
      4  * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions are met:
      8  *
      9  * a) Redistributions of source code must retain the above copyright notice,
     10  *    this list of conditions and the following disclaimer.
     11  *
     12  * b) Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in
     14  *    the documentation and/or other materials provided with the distribution.
     15  *
     16  * c) Neither the name of Cisco Systems, Inc. nor the names of its
     17  *    contributors may be used to endorse or promote products derived
     18  *    from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
     24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     30  * THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifdef __FreeBSD__
     34 #include <sys/cdefs.h>
     35 __FBSDID("$FreeBSD: head/sys/netinet/sctp_sysctl.h 271204 2014-09-06 19:12:14Z tuexen $");
     36 #endif
     37 
     38 #ifndef _NETINET_SCTP_SYSCTL_H_
     39 #define _NETINET_SCTP_SYSCTL_H_
     40 
     41 #include <netinet/sctp_os.h>
     42 #include <netinet/sctp_constants.h>
     43 
     44 struct sctp_sysctl {
     45 	uint32_t sctp_sendspace;
     46 	uint32_t sctp_recvspace;
     47 	uint32_t sctp_auto_asconf;
     48 	uint32_t sctp_multiple_asconfs;
     49 	uint32_t sctp_ecn_enable;
     50 	uint32_t sctp_pr_enable;
     51 	uint32_t sctp_auth_enable;
     52 	uint32_t sctp_asconf_enable;
     53 	uint32_t sctp_reconfig_enable;
     54 	uint32_t sctp_nrsack_enable;
     55 	uint32_t sctp_pktdrop_enable;
     56 	uint32_t sctp_fr_max_burst_default;
     57 	uint32_t sctp_strict_sacks;
     58 #if !(defined(__FreeBSD__) && __FreeBSD_version >= 800000)
     59 #if !defined(SCTP_WITH_NO_CSUM)
     60 	uint32_t sctp_no_csum_on_loopback;
     61 #endif
     62 #endif
     63 	uint32_t sctp_peer_chunk_oh;
     64 	uint32_t sctp_max_burst_default;
     65 	uint32_t sctp_max_chunks_on_queue;
     66 	uint32_t sctp_hashtblsize;
     67 	uint32_t sctp_pcbtblsize;
     68 	uint32_t sctp_min_split_point;
     69 	uint32_t sctp_chunkscale;
     70 	uint32_t sctp_delayed_sack_time_default;
     71 	uint32_t sctp_sack_freq_default;
     72 	uint32_t sctp_system_free_resc_limit;
     73 	uint32_t sctp_asoc_free_resc_limit;
     74 	uint32_t sctp_heartbeat_interval_default;
     75 	uint32_t sctp_pmtu_raise_time_default;
     76 	uint32_t sctp_shutdown_guard_time_default;
     77 	uint32_t sctp_secret_lifetime_default;
     78 	uint32_t sctp_rto_max_default;
     79 	uint32_t sctp_rto_min_default;
     80 	uint32_t sctp_rto_initial_default;
     81 	uint32_t sctp_init_rto_max_default;
     82 	uint32_t sctp_valid_cookie_life_default;
     83 	uint32_t sctp_init_rtx_max_default;
     84 	uint32_t sctp_assoc_rtx_max_default;
     85 	uint32_t sctp_path_rtx_max_default;
     86 	uint32_t sctp_path_pf_threshold;
     87 	uint32_t sctp_add_more_threshold;
     88 	uint32_t sctp_nr_incoming_streams_default;
     89 	uint32_t sctp_nr_outgoing_streams_default;
     90 	uint32_t sctp_cmt_on_off;
     91 	uint32_t sctp_cmt_use_dac;
     92 	uint32_t sctp_use_cwnd_based_maxburst;
     93 	uint32_t sctp_nat_friendly;
     94 	uint32_t sctp_L2_abc_variable;
     95 	uint32_t sctp_mbuf_threshold_count;
     96 	uint32_t sctp_do_drain;
     97 	uint32_t sctp_hb_maxburst;
     98 	uint32_t sctp_abort_if_one_2_one_hits_limit;
     99 	uint32_t sctp_strict_data_order;
    100 	uint32_t sctp_min_residual;
    101 	uint32_t sctp_max_retran_chunk;
    102 	uint32_t sctp_logging_level;
    103 	/* JRS - Variable for default congestion control module */
    104 	uint32_t sctp_default_cc_module;
    105 	/* RS - Variable for default stream scheduling module */
    106 	uint32_t sctp_default_ss_module;
    107 	uint32_t sctp_default_frag_interleave;
    108 	uint32_t sctp_mobility_base;
    109 	uint32_t sctp_mobility_fasthandoff;
    110 	uint32_t sctp_inits_include_nat_friendly;
    111 	uint32_t sctp_rttvar_bw;
    112 	uint32_t sctp_rttvar_rtt;
    113 	uint32_t sctp_rttvar_eqret;
    114 	uint32_t sctp_steady_step;
    115 	uint32_t sctp_use_dccc_ecn;
    116 	uint32_t sctp_diag_info_code;
    117 #if defined(SCTP_LOCAL_TRACE_BUF)
    118 #if defined(__Windows__)
    119 	struct sctp_log *sctp_log;
    120 #else
    121 	struct sctp_log sctp_log;
    122 #endif
    123 #endif
    124 	uint32_t sctp_udp_tunneling_port;
    125 	uint32_t sctp_enable_sack_immediately;
    126 	uint32_t sctp_vtag_time_wait;
    127 	uint32_t sctp_buffer_splitting;
    128 	uint32_t sctp_initial_cwnd;
    129 	uint32_t sctp_blackhole;
    130 #if defined(SCTP_DEBUG)
    131 	uint32_t sctp_debug_on;
    132 #endif
    133 #if defined(__APPLE__)
    134 	uint32_t sctp_ignore_vmware_interfaces;
    135 	uint32_t sctp_main_timer;
    136 	uint32_t sctp_addr_watchdog_limit;
    137 	uint32_t sctp_vtag_watchdog_limit;
    138 #endif
    139 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
    140 	uint32_t sctp_output_unlocked;
    141 #endif
    142 };
    143 
    144 /*
    145  * limits for the sysctl variables
    146  */
    147 /* maxdgram: Maximum outgoing SCTP buffer size */
    148 #define SCTPCTL_MAXDGRAM_DESC		"Maximum outgoing SCTP buffer size"
    149 #define SCTPCTL_MAXDGRAM_MIN		0
    150 #define SCTPCTL_MAXDGRAM_MAX		0xFFFFFFFF
    151 #define SCTPCTL_MAXDGRAM_DEFAULT	262144	/* 256k */
    152 
    153 /* recvspace: Maximum incoming SCTP buffer size */
    154 #define SCTPCTL_RECVSPACE_DESC		"Maximum incoming SCTP buffer size"
    155 #define SCTPCTL_RECVSPACE_MIN		0
    156 #define SCTPCTL_RECVSPACE_MAX		0xFFFFFFFF
    157 #define SCTPCTL_RECVSPACE_DEFAULT	262144	/* 256k */
    158 
    159 /* autoasconf: Enable SCTP Auto-ASCONF */
    160 #define SCTPCTL_AUTOASCONF_DESC		"Enable SCTP Auto-ASCONF"
    161 #define SCTPCTL_AUTOASCONF_MIN		0
    162 #define SCTPCTL_AUTOASCONF_MAX		1
    163 #define SCTPCTL_AUTOASCONF_DEFAULT	1
    164 
    165 /* autoasconf: Enable SCTP Auto-ASCONF */
    166 #define SCTPCTL_MULTIPLEASCONFS_DESC	"Enable SCTP Muliple-ASCONFs"
    167 #define SCTPCTL_MULTIPLEASCONFS_MIN	0
    168 #define SCTPCTL_MULTIPLEASCONFS_MAX	1
    169 #define SCTPCTL_MULTIPLEASCONFS_DEFAULT	SCTP_DEFAULT_MULTIPLE_ASCONFS
    170 
    171 /* ecn_enable: Enable SCTP ECN */
    172 #define SCTPCTL_ECN_ENABLE_DESC		"Enable SCTP ECN"
    173 #define SCTPCTL_ECN_ENABLE_MIN		0
    174 #define SCTPCTL_ECN_ENABLE_MAX		1
    175 #define SCTPCTL_ECN_ENABLE_DEFAULT	1
    176 
    177 /* pr_enable: Enable PR-SCTP */
    178 #define SCTPCTL_PR_ENABLE_DESC		"Enable PR-SCTP"
    179 #define SCTPCTL_PR_ENABLE_MIN		0
    180 #define SCTPCTL_PR_ENABLE_MAX		1
    181 #define SCTPCTL_PR_ENABLE_DEFAULT	1
    182 
    183 /* auth_enable: Enable SCTP AUTH function */
    184 #define SCTPCTL_AUTH_ENABLE_DESC	"Enable SCTP AUTH function"
    185 #define SCTPCTL_AUTH_ENABLE_MIN		0
    186 #define SCTPCTL_AUTH_ENABLE_MAX		1
    187 #define SCTPCTL_AUTH_ENABLE_DEFAULT	1
    188 
    189 /* asconf_enable: Enable SCTP ASCONF */
    190 #define SCTPCTL_ASCONF_ENABLE_DESC	"Enable SCTP ASCONF"
    191 #define SCTPCTL_ASCONF_ENABLE_MIN	0
    192 #define SCTPCTL_ASCONF_ENABLE_MAX	1
    193 #define SCTPCTL_ASCONF_ENABLE_DEFAULT	1
    194 
    195 /* reconfig_enable: Enable SCTP RE-CONFIG */
    196 #define SCTPCTL_RECONFIG_ENABLE_DESC	"Enable SCTP RE-CONFIG"
    197 #define SCTPCTL_RECONFIG_ENABLE_MIN	0
    198 #define SCTPCTL_RECONFIG_ENABLE_MAX	1
    199 #define SCTPCTL_RECONFIG_ENABLE_DEFAULT	1
    200 
    201 /* nrsack_enable: Enable NR_SACK */
    202 #define SCTPCTL_NRSACK_ENABLE_DESC	"Enable SCTP NR-SACK"
    203 #define SCTPCTL_NRSACK_ENABLE_MIN	0
    204 #define SCTPCTL_NRSACK_ENABLE_MAX	1
    205 #define SCTPCTL_NRSACK_ENABLE_DEFAULT	0
    206 
    207 /* pktdrop_enable: Enable SCTP Packet Drop Reports */
    208 #define SCTPCTL_PKTDROP_ENABLE_DESC	"Enable SCTP PKTDROP"
    209 #define SCTPCTL_PKTDROP_ENABLE_MIN	0
    210 #define SCTPCTL_PKTDROP_ENABLE_MAX	1
    211 #define SCTPCTL_PKTDROP_ENABLE_DEFAULT	0
    212 
    213 /* strict_sacks: Enable SCTP Strict SACK checking */
    214 #define SCTPCTL_STRICT_SACKS_DESC	"Enable SCTP Strict SACK checking"
    215 #define SCTPCTL_STRICT_SACKS_MIN	0
    216 #define SCTPCTL_STRICT_SACKS_MAX	1
    217 #define SCTPCTL_STRICT_SACKS_DEFAULT	1
    218 
    219 /* loopback_nocsum: Enable NO Csum on packets sent on loopback */
    220 #define SCTPCTL_LOOPBACK_NOCSUM_DESC	"Enable NO Csum on packets sent on loopback"
    221 #define SCTPCTL_LOOPBACK_NOCSUM_MIN	0
    222 #define SCTPCTL_LOOPBACK_NOCSUM_MAX	1
    223 #define SCTPCTL_LOOPBACK_NOCSUM_DEFAULT	1
    224 
    225 /* peer_chkoh: Amount to debit peers rwnd per chunk sent */
    226 #define SCTPCTL_PEER_CHKOH_DESC		"Amount to debit peers rwnd per chunk sent"
    227 #define SCTPCTL_PEER_CHKOH_MIN		0
    228 #define SCTPCTL_PEER_CHKOH_MAX		0xFFFFFFFF
    229 #define SCTPCTL_PEER_CHKOH_DEFAULT	256
    230 
    231 /* maxburst: Default max burst for sctp endpoints */
    232 #define SCTPCTL_MAXBURST_DESC		"Default max burst for sctp endpoints"
    233 #define SCTPCTL_MAXBURST_MIN		0
    234 #define SCTPCTL_MAXBURST_MAX		0xFFFFFFFF
    235 #define SCTPCTL_MAXBURST_DEFAULT	SCTP_DEF_MAX_BURST
    236 
    237 /* fr_maxburst: Default max burst for sctp endpoints when fast retransmitting */
    238 #define SCTPCTL_FRMAXBURST_DESC		"Default fr max burst for sctp endpoints"
    239 #define SCTPCTL_FRMAXBURST_MIN		0
    240 #define SCTPCTL_FRMAXBURST_MAX		0xFFFFFFFF
    241 #define SCTPCTL_FRMAXBURST_DEFAULT	SCTP_DEF_FRMAX_BURST
    242 
    243 
    244 /* maxchunks: Default max chunks on queue per asoc */
    245 #define SCTPCTL_MAXCHUNKS_DESC		"Default max chunks on queue per asoc"
    246 #define SCTPCTL_MAXCHUNKS_MIN		0
    247 #define SCTPCTL_MAXCHUNKS_MAX		0xFFFFFFFF
    248 #define SCTPCTL_MAXCHUNKS_DEFAULT	SCTP_ASOC_MAX_CHUNKS_ON_QUEUE
    249 
    250 /* tcbhashsize: Tunable for Hash table sizes */
    251 #define SCTPCTL_TCBHASHSIZE_DESC	"Tunable for TCB hash table sizes"
    252 #define SCTPCTL_TCBHASHSIZE_MIN		1
    253 #define SCTPCTL_TCBHASHSIZE_MAX		0xFFFFFFFF
    254 #define SCTPCTL_TCBHASHSIZE_DEFAULT	SCTP_TCBHASHSIZE
    255 
    256 /* pcbhashsize: Tunable for PCB Hash table sizes */
    257 #define SCTPCTL_PCBHASHSIZE_DESC	"Tunable for PCB hash table sizes"
    258 #define SCTPCTL_PCBHASHSIZE_MIN		1
    259 #define SCTPCTL_PCBHASHSIZE_MAX		0xFFFFFFFF
    260 #define SCTPCTL_PCBHASHSIZE_DEFAULT	SCTP_PCBHASHSIZE
    261 
    262 /* min_split_point: Minimum size when splitting a chunk */
    263 #define SCTPCTL_MIN_SPLIT_POINT_DESC	"Minimum size when splitting a chunk"
    264 #define SCTPCTL_MIN_SPLIT_POINT_MIN	0
    265 #define SCTPCTL_MIN_SPLIT_POINT_MAX	0xFFFFFFFF
    266 #define SCTPCTL_MIN_SPLIT_POINT_DEFAULT	SCTP_DEFAULT_SPLIT_POINT_MIN
    267 
    268 /* chunkscale: Tunable for Scaling of number of chunks and messages */
    269 #define SCTPCTL_CHUNKSCALE_DESC		"Tunable for Scaling of number of chunks and messages"
    270 #define SCTPCTL_CHUNKSCALE_MIN		1
    271 #define SCTPCTL_CHUNKSCALE_MAX		0xFFFFFFFF
    272 #define SCTPCTL_CHUNKSCALE_DEFAULT	SCTP_CHUNKQUEUE_SCALE
    273 
    274 /* delayed_sack_time: Default delayed SACK timer in ms */
    275 #define SCTPCTL_DELAYED_SACK_TIME_DESC	"Default delayed SACK timer in ms"
    276 #define SCTPCTL_DELAYED_SACK_TIME_MIN	0
    277 #define SCTPCTL_DELAYED_SACK_TIME_MAX	0xFFFFFFFF
    278 #define SCTPCTL_DELAYED_SACK_TIME_DEFAULT	SCTP_RECV_MSEC
    279 
    280 /* sack_freq: Default SACK frequency */
    281 #define SCTPCTL_SACK_FREQ_DESC		"Default SACK frequency"
    282 #define SCTPCTL_SACK_FREQ_MIN		0
    283 #define SCTPCTL_SACK_FREQ_MAX		0xFFFFFFFF
    284 #define SCTPCTL_SACK_FREQ_DEFAULT	SCTP_DEFAULT_SACK_FREQ
    285 
    286 /* sys_resource: Max number of cached resources in the system */
    287 #define SCTPCTL_SYS_RESOURCE_DESC	"Max number of cached resources in the system"
    288 #define SCTPCTL_SYS_RESOURCE_MIN	0
    289 #define SCTPCTL_SYS_RESOURCE_MAX	0xFFFFFFFF
    290 #define SCTPCTL_SYS_RESOURCE_DEFAULT	SCTP_DEF_SYSTEM_RESC_LIMIT
    291 
    292 /* asoc_resource: Max number of cached resources in an asoc */
    293 #define SCTPCTL_ASOC_RESOURCE_DESC	"Max number of cached resources in an asoc"
    294 #define SCTPCTL_ASOC_RESOURCE_MIN	0
    295 #define SCTPCTL_ASOC_RESOURCE_MAX	0xFFFFFFFF
    296 #define SCTPCTL_ASOC_RESOURCE_DEFAULT	SCTP_DEF_ASOC_RESC_LIMIT
    297 
    298 /* heartbeat_interval: Default heartbeat interval in ms */
    299 #define SCTPCTL_HEARTBEAT_INTERVAL_DESC	"Default heartbeat interval in ms"
    300 #define SCTPCTL_HEARTBEAT_INTERVAL_MIN	0
    301 #define SCTPCTL_HEARTBEAT_INTERVAL_MAX	0xFFFFFFFF
    302 #define SCTPCTL_HEARTBEAT_INTERVAL_DEFAULT	SCTP_HB_DEFAULT_MSEC
    303 
    304 /* pmtu_raise_time: Default PMTU raise timer in seconds */
    305 #define SCTPCTL_PMTU_RAISE_TIME_DESC	"Default PMTU raise timer in seconds"
    306 #define SCTPCTL_PMTU_RAISE_TIME_MIN	0
    307 #define SCTPCTL_PMTU_RAISE_TIME_MAX	0xFFFFFFFF
    308 #define SCTPCTL_PMTU_RAISE_TIME_DEFAULT	SCTP_DEF_PMTU_RAISE_SEC
    309 
    310 /* shutdown_guard_time: Default shutdown guard timer in seconds */
    311 #define SCTPCTL_SHUTDOWN_GUARD_TIME_DESC	"Default shutdown guard timer in seconds"
    312 #define SCTPCTL_SHUTDOWN_GUARD_TIME_MIN		0
    313 #define SCTPCTL_SHUTDOWN_GUARD_TIME_MAX		0xFFFFFFFF
    314 #define SCTPCTL_SHUTDOWN_GUARD_TIME_DEFAULT	SCTP_DEF_MAX_SHUTDOWN_SEC
    315 
    316 /* secret_lifetime: Default secret lifetime in seconds */
    317 #define SCTPCTL_SECRET_LIFETIME_DESC	"Default secret lifetime in seconds"
    318 #define SCTPCTL_SECRET_LIFETIME_MIN	0
    319 #define SCTPCTL_SECRET_LIFETIME_MAX	0xFFFFFFFF
    320 #define SCTPCTL_SECRET_LIFETIME_DEFAULT	SCTP_DEFAULT_SECRET_LIFE_SEC
    321 
    322 /* rto_max: Default maximum retransmission timeout in ms */
    323 #define SCTPCTL_RTO_MAX_DESC		"Default maximum retransmission timeout in ms"
    324 #define SCTPCTL_RTO_MAX_MIN		0
    325 #define SCTPCTL_RTO_MAX_MAX		0xFFFFFFFF
    326 #define SCTPCTL_RTO_MAX_DEFAULT		SCTP_RTO_UPPER_BOUND
    327 
    328 /* rto_min: Default minimum retransmission timeout in ms */
    329 #define SCTPCTL_RTO_MIN_DESC		"Default minimum retransmission timeout in ms"
    330 #define SCTPCTL_RTO_MIN_MIN		0
    331 #define SCTPCTL_RTO_MIN_MAX		0xFFFFFFFF
    332 #define SCTPCTL_RTO_MIN_DEFAULT		SCTP_RTO_LOWER_BOUND
    333 
    334 /* rto_initial: Default initial retransmission timeout in ms */
    335 #define SCTPCTL_RTO_INITIAL_DESC	"Default initial retransmission timeout in ms"
    336 #define SCTPCTL_RTO_INITIAL_MIN		0
    337 #define SCTPCTL_RTO_INITIAL_MAX		0xFFFFFFFF
    338 #define SCTPCTL_RTO_INITIAL_DEFAULT	SCTP_RTO_INITIAL
    339 
    340 /* init_rto_max: Default maximum retransmission timeout during association setup in ms */
    341 #define SCTPCTL_INIT_RTO_MAX_DESC	"Default maximum retransmission timeout during association setup in ms"
    342 #define SCTPCTL_INIT_RTO_MAX_MIN	0
    343 #define SCTPCTL_INIT_RTO_MAX_MAX	0xFFFFFFFF
    344 #define SCTPCTL_INIT_RTO_MAX_DEFAULT	SCTP_RTO_UPPER_BOUND
    345 
    346 /* valid_cookie_life: Default cookie lifetime in sec */
    347 #define SCTPCTL_VALID_COOKIE_LIFE_DESC	"Default cookie lifetime in seconds"
    348 #define SCTPCTL_VALID_COOKIE_LIFE_MIN	0
    349 #define SCTPCTL_VALID_COOKIE_LIFE_MAX	0xFFFFFFFF
    350 #define SCTPCTL_VALID_COOKIE_LIFE_DEFAULT	SCTP_DEFAULT_COOKIE_LIFE
    351 
    352 /* init_rtx_max: Default maximum number of retransmission for INIT chunks */
    353 #define SCTPCTL_INIT_RTX_MAX_DESC	"Default maximum number of retransmission for INIT chunks"
    354 #define SCTPCTL_INIT_RTX_MAX_MIN	0
    355 #define SCTPCTL_INIT_RTX_MAX_MAX	0xFFFFFFFF
    356 #define SCTPCTL_INIT_RTX_MAX_DEFAULT	SCTP_DEF_MAX_INIT
    357 
    358 /* assoc_rtx_max: Default maximum number of retransmissions per association */
    359 #define SCTPCTL_ASSOC_RTX_MAX_DESC	"Default maximum number of retransmissions per association"
    360 #define SCTPCTL_ASSOC_RTX_MAX_MIN	0
    361 #define SCTPCTL_ASSOC_RTX_MAX_MAX	0xFFFFFFFF
    362 #define SCTPCTL_ASSOC_RTX_MAX_DEFAULT	SCTP_DEF_MAX_SEND
    363 
    364 /* path_rtx_max: Default maximum of retransmissions per path */
    365 #define SCTPCTL_PATH_RTX_MAX_DESC	"Default maximum of retransmissions per path"
    366 #define SCTPCTL_PATH_RTX_MAX_MIN	0
    367 #define SCTPCTL_PATH_RTX_MAX_MAX	0xFFFFFFFF
    368 #define SCTPCTL_PATH_RTX_MAX_DEFAULT	SCTP_DEF_MAX_PATH_RTX
    369 
    370 /* path_pf_threshold: threshold for considering the path potentially failed */
    371 #define SCTPCTL_PATH_PF_THRESHOLD_DESC		"Default potentially failed threshold"
    372 #define SCTPCTL_PATH_PF_THRESHOLD_MIN		0
    373 #define SCTPCTL_PATH_PF_THRESHOLD_MAX		0xFFFF
    374 #define SCTPCTL_PATH_PF_THRESHOLD_DEFAULT	SCTPCTL_PATH_PF_THRESHOLD_MAX
    375 
    376 /* add_more_on_output: When space-wise is it worthwhile to try to add more to a socket send buffer */
    377 #define SCTPCTL_ADD_MORE_ON_OUTPUT_DESC	"When space-wise is it worthwhile to try to add more to a socket send buffer"
    378 #define SCTPCTL_ADD_MORE_ON_OUTPUT_MIN	0
    379 #define SCTPCTL_ADD_MORE_ON_OUTPUT_MAX	0xFFFFFFFF
    380 #define SCTPCTL_ADD_MORE_ON_OUTPUT_DEFAULT SCTP_DEFAULT_ADD_MORE
    381 
    382 /* incoming_streams: Default number of incoming streams */
    383 #define SCTPCTL_INCOMING_STREAMS_DESC	"Default number of incoming streams"
    384 #define SCTPCTL_INCOMING_STREAMS_MIN	1
    385 #define SCTPCTL_INCOMING_STREAMS_MAX	65535
    386 #define SCTPCTL_INCOMING_STREAMS_DEFAULT SCTP_ISTREAM_INITIAL
    387 
    388 /* outgoing_streams: Default number of outgoing streams */
    389 #define SCTPCTL_OUTGOING_STREAMS_DESC	"Default number of outgoing streams"
    390 #define SCTPCTL_OUTGOING_STREAMS_MIN	1
    391 #define SCTPCTL_OUTGOING_STREAMS_MAX	65535
    392 #define SCTPCTL_OUTGOING_STREAMS_DEFAULT SCTP_OSTREAM_INITIAL
    393 
    394 /* cmt_on_off: CMT on/off flag */
    395 #define SCTPCTL_CMT_ON_OFF_DESC		"CMT settings"
    396 #define SCTPCTL_CMT_ON_OFF_MIN		SCTP_CMT_OFF
    397 #define SCTPCTL_CMT_ON_OFF_MAX		SCTP_CMT_MAX
    398 #define SCTPCTL_CMT_ON_OFF_DEFAULT	SCTP_CMT_OFF
    399 
    400 /* cmt_use_dac: CMT DAC on/off flag */
    401 #define SCTPCTL_CMT_USE_DAC_DESC	"CMT DAC on/off flag"
    402 #define SCTPCTL_CMT_USE_DAC_MIN		0
    403 #define SCTPCTL_CMT_USE_DAC_MAX		1
    404 #define SCTPCTL_CMT_USE_DAC_DEFAULT    	0
    405 
    406 /* cwnd_maxburst: Use a CWND adjusting maxburst */
    407 #define SCTPCTL_CWND_MAXBURST_DESC	"Use a CWND adjusting maxburst"
    408 #define SCTPCTL_CWND_MAXBURST_MIN	0
    409 #define SCTPCTL_CWND_MAXBURST_MAX	1
    410 #define SCTPCTL_CWND_MAXBURST_DEFAULT	1
    411 
    412 /* nat_friendly: SCTP NAT friendly operation */
    413 #define SCTPCTL_NAT_FRIENDLY_DESC	"SCTP NAT friendly operation"
    414 #define SCTPCTL_NAT_FRIENDLY_MIN	0
    415 #define SCTPCTL_NAT_FRIENDLY_MAX	1
    416 #define SCTPCTL_NAT_FRIENDLY_DEFAULT	1
    417 
    418 /* abc_l_var: SCTP ABC max increase per SACK (L) */
    419 #define SCTPCTL_ABC_L_VAR_DESC		"SCTP ABC max increase per SACK (L)"
    420 #define SCTPCTL_ABC_L_VAR_MIN		0
    421 #define SCTPCTL_ABC_L_VAR_MAX		0xFFFFFFFF
    422 #define SCTPCTL_ABC_L_VAR_DEFAULT	2
    423 
    424 /* max_chained_mbufs: Default max number of small mbufs on a chain */
    425 #define SCTPCTL_MAX_CHAINED_MBUFS_DESC	"Default max number of small mbufs on a chain"
    426 #define SCTPCTL_MAX_CHAINED_MBUFS_MIN	0
    427 #define SCTPCTL_MAX_CHAINED_MBUFS_MAX	0xFFFFFFFF
    428 #define SCTPCTL_MAX_CHAINED_MBUFS_DEFAULT	SCTP_DEFAULT_MBUFS_IN_CHAIN
    429 
    430 /* do_sctp_drain: Should SCTP respond to the drain calls */
    431 #define SCTPCTL_DO_SCTP_DRAIN_DESC	"Should SCTP respond to the drain calls"
    432 #define SCTPCTL_DO_SCTP_DRAIN_MIN	0
    433 #define SCTPCTL_DO_SCTP_DRAIN_MAX	1
    434 #define SCTPCTL_DO_SCTP_DRAIN_DEFAULT	1
    435 
    436 /* hb_max_burst: Confirmation Heartbeat max burst? */
    437 #define SCTPCTL_HB_MAX_BURST_DESC	"Confirmation Heartbeat max burst"
    438 #define SCTPCTL_HB_MAX_BURST_MIN	1
    439 #define SCTPCTL_HB_MAX_BURST_MAX	0xFFFFFFFF
    440 #define SCTPCTL_HB_MAX_BURST_DEFAULT	SCTP_DEF_HBMAX_BURST
    441 
    442 /* abort_at_limit: When one-2-one hits qlimit abort */
    443 #define SCTPCTL_ABORT_AT_LIMIT_DESC	"When one-2-one hits qlimit abort"
    444 #define SCTPCTL_ABORT_AT_LIMIT_MIN	0
    445 #define SCTPCTL_ABORT_AT_LIMIT_MAX	1
    446 #define SCTPCTL_ABORT_AT_LIMIT_DEFAULT	0
    447 
    448 /* strict_data_order: Enforce strict data ordering, abort if control inside data */
    449 #define SCTPCTL_STRICT_DATA_ORDER_DESC	"Enforce strict data ordering, abort if control inside data"
    450 #define SCTPCTL_STRICT_DATA_ORDER_MIN	0
    451 #define SCTPCTL_STRICT_DATA_ORDER_MAX	1
    452 #define SCTPCTL_STRICT_DATA_ORDER_DEFAULT	0
    453 
    454 /* min_residual: min residual in a data fragment leftover */
    455 #define SCTPCTL_MIN_RESIDUAL_DESC	"Minimum residual data chunk in second part of split"
    456 #define SCTPCTL_MIN_RESIDUAL_MIN	20
    457 #define SCTPCTL_MIN_RESIDUAL_MAX	65535
    458 #define SCTPCTL_MIN_RESIDUAL_DEFAULT	1452
    459 
    460 /* max_retran_chunk: max chunk retransmissions */
    461 #define SCTPCTL_MAX_RETRAN_CHUNK_DESC	"Maximum times an unlucky chunk can be retran'd before assoc abort"
    462 #define SCTPCTL_MAX_RETRAN_CHUNK_MIN	0
    463 #define SCTPCTL_MAX_RETRAN_CHUNK_MAX	65535
    464 #define SCTPCTL_MAX_RETRAN_CHUNK_DEFAULT	30
    465 
    466 /* sctp_logging: This gives us logging when the options are enabled */
    467 #define SCTPCTL_LOGGING_LEVEL_DESC	"Ltrace/KTR trace logging level"
    468 #define SCTPCTL_LOGGING_LEVEL_MIN	0
    469 #define SCTPCTL_LOGGING_LEVEL_MAX	0xffffffff
    470 #define SCTPCTL_LOGGING_LEVEL_DEFAULT	0
    471 
    472 /* JRS - default congestion control module sysctl */
    473 #define SCTPCTL_DEFAULT_CC_MODULE_DESC		"Default congestion control module"
    474 #define SCTPCTL_DEFAULT_CC_MODULE_MIN		0
    475 #define SCTPCTL_DEFAULT_CC_MODULE_MAX		2
    476 #define SCTPCTL_DEFAULT_CC_MODULE_DEFAULT	0
    477 
    478 /* RS - default stream scheduling module sysctl */
    479 #define SCTPCTL_DEFAULT_SS_MODULE_DESC		"Default stream scheduling module"
    480 #define SCTPCTL_DEFAULT_SS_MODULE_MIN		0
    481 #define SCTPCTL_DEFAULT_SS_MODULE_MAX		5
    482 #define SCTPCTL_DEFAULT_SS_MODULE_DEFAULT	0
    483 
    484 /* RRS - default fragment interleave */
    485 #define SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DESC	"Default fragment interleave level"
    486 #define SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MIN	0
    487 #define SCTPCTL_DEFAULT_FRAG_INTERLEAVE_MAX	2
    488 #define SCTPCTL_DEFAULT_FRAG_INTERLEAVE_DEFAULT	1
    489 
    490 /* mobility_base: Enable SCTP mobility support */
    491 #define SCTPCTL_MOBILITY_BASE_DESC	"Enable SCTP base mobility"
    492 #define SCTPCTL_MOBILITY_BASE_MIN	0
    493 #define SCTPCTL_MOBILITY_BASE_MAX	1
    494 #define SCTPCTL_MOBILITY_BASE_DEFAULT	0
    495 
    496 /* mobility_fasthandoff: Enable SCTP fast handoff support */
    497 #define SCTPCTL_MOBILITY_FASTHANDOFF_DESC	"Enable SCTP fast handoff"
    498 #define SCTPCTL_MOBILITY_FASTHANDOFF_MIN	0
    499 #define SCTPCTL_MOBILITY_FASTHANDOFF_MAX	1
    500 #define SCTPCTL_MOBILITY_FASTHANDOFF_DEFAULT	0
    501 
    502 /* Enable SCTP/UDP tunneling port */
    503 #define SCTPCTL_UDP_TUNNELING_PORT_DESC		"Set the SCTP/UDP tunneling port"
    504 #define SCTPCTL_UDP_TUNNELING_PORT_MIN		0
    505 #define SCTPCTL_UDP_TUNNELING_PORT_MAX		65535
    506 #if defined(__FreeBSD__)
    507 #define SCTPCTL_UDP_TUNNELING_PORT_DEFAULT	0
    508 #else
    509 #define SCTPCTL_UDP_TUNNELING_PORT_DEFAULT	SCTP_OVER_UDP_TUNNELING_PORT
    510 #endif
    511 
    512 /* Enable sending of the SACK-IMMEDIATELY bit */
    513 #define SCTPCTL_SACK_IMMEDIATELY_ENABLE_DESC	"Enable sending of the SACK-IMMEDIATELY-bit."
    514 #define SCTPCTL_SACK_IMMEDIATELY_ENABLE_MIN	0
    515 #define SCTPCTL_SACK_IMMEDIATELY_ENABLE_MAX	1
    516 #define SCTPCTL_SACK_IMMEDIATELY_ENABLE_DEFAULT	SCTPCTL_SACK_IMMEDIATELY_ENABLE_MIN
    517 
    518 /* Enable sending of the NAT-FRIENDLY message */
    519 #define SCTPCTL_NAT_FRIENDLY_INITS_DESC	"Enable sending of the nat-friendly SCTP option on INITs."
    520 #define SCTPCTL_NAT_FRIENDLY_INITS_MIN	0
    521 #define SCTPCTL_NAT_FRIENDLY_INITS_MAX	1
    522 #define SCTPCTL_NAT_FRIENDLY_INITS_DEFAULT	SCTPCTL_NAT_FRIENDLY_INITS_MIN
    523 
    524 /* Vtag time wait in seconds */
    525 #define SCTPCTL_TIME_WAIT_DESC	"Vtag time wait time in seconds, 0 disables it."
    526 #define SCTPCTL_TIME_WAIT_MIN	0
    527 #define SCTPCTL_TIME_WAIT_MAX	0xffffffff
    528 #define SCTPCTL_TIME_WAIT_DEFAULT	SCTP_TIME_WAIT
    529 
    530 /* Enable Send/Receive buffer splitting */
    531 #define SCTPCTL_BUFFER_SPLITTING_DESC		"Enable send/receive buffer splitting."
    532 #define SCTPCTL_BUFFER_SPLITTING_MIN		0
    533 #define SCTPCTL_BUFFER_SPLITTING_MAX		0x3
    534 #define SCTPCTL_BUFFER_SPLITTING_DEFAULT	SCTPCTL_BUFFER_SPLITTING_MIN
    535 
    536 /* Initial congestion window in MTU */
    537 #define SCTPCTL_INITIAL_CWND_DESC	"Initial congestion window in MTUs"
    538 #define SCTPCTL_INITIAL_CWND_MIN	0
    539 #define SCTPCTL_INITIAL_CWND_MAX	0xffffffff
    540 #define SCTPCTL_INITIAL_CWND_DEFAULT	3
    541 
    542 /* rttvar smooth avg for bw calc  */
    543 #define SCTPCTL_RTTVAR_BW_DESC	"Shift amount for bw smoothing on rtt calc"
    544 #define SCTPCTL_RTTVAR_BW_MIN	0
    545 #define SCTPCTL_RTTVAR_BW_MAX	32
    546 #define SCTPCTL_RTTVAR_BW_DEFAULT	4
    547 
    548 /* rttvar smooth avg for bw calc  */
    549 #define SCTPCTL_RTTVAR_RTT_DESC	"Shift amount for rtt smoothing on rtt calc"
    550 #define SCTPCTL_RTTVAR_RTT_MIN	0
    551 #define SCTPCTL_RTTVAR_RTT_MAX	32
    552 #define SCTPCTL_RTTVAR_RTT_DEFAULT	5
    553 
    554 #define SCTPCTL_RTTVAR_EQRET_DESC	"What to return when rtt and bw are unchanged"
    555 #define SCTPCTL_RTTVAR_EQRET_MIN	0
    556 #define SCTPCTL_RTTVAR_EQRET_MAX	1
    557 #define SCTPCTL_RTTVAR_EQRET_DEFAULT	0
    558 
    559 #define SCTPCTL_RTTVAR_STEADYS_DESC	"How many the sames it takes to try step down of cwnd"
    560 #define SCTPCTL_RTTVAR_STEADYS_MIN	0
    561 #define SCTPCTL_RTTVAR_STEADYS_MAX	0xFFFF
    562 #define SCTPCTL_RTTVAR_STEADYS_DEFAULT	20 /* 0 means disable feature */
    563 
    564 #define SCTPCTL_RTTVAR_DCCCECN_DESC	"Enable for RTCC CC datacenter ECN"
    565 #define SCTPCTL_RTTVAR_DCCCECN_MIN	0
    566 #define SCTPCTL_RTTVAR_DCCCECN_MAX	1
    567 #define SCTPCTL_RTTVAR_DCCCECN_DEFAULT	1 /* 0 means disable feature */
    568 
    569 #define SCTPCTL_BLACKHOLE_DESC		"Enable SCTP blackholing"
    570 #define SCTPCTL_BLACKHOLE_MIN		0
    571 #define SCTPCTL_BLACKHOLE_MAX		2
    572 #define SCTPCTL_BLACKHOLE_DEFAULT	SCTPCTL_BLACKHOLE_MIN
    573 
    574 #define SCTPCTL_DIAG_INFO_CODE_DESC	"Diagnostic information error cause code"
    575 #define SCTPCTL_DIAG_INFO_CODE_MIN	0
    576 #define SCTPCTL_DIAG_INFO_CODE_MAX	65535
    577 #define SCTPCTL_DIAG_INFO_CODE_DEFAULT	0
    578 
    579 #if defined(SCTP_DEBUG)
    580 /* debug: Configure debug output */
    581 #define SCTPCTL_DEBUG_DESC	"Configure debug output"
    582 #define SCTPCTL_DEBUG_MIN	0
    583 #define SCTPCTL_DEBUG_MAX	0xFFFFFFFF
    584 #define SCTPCTL_DEBUG_DEFAULT	0
    585 #endif
    586 
    587 #if defined(__APPLE__)
    588 #define SCTPCTL_MAIN_TIMER_DESC		"Main timer interval in ms"
    589 #define SCTPCTL_MAIN_TIMER_MIN		1
    590 #define SCTPCTL_MAIN_TIMER_MAX		0xFFFFFFFF
    591 #define SCTPCTL_MAIN_TIMER_DEFAULT	10
    592 
    593 #define SCTPCTL_IGNORE_VMWARE_INTERFACES_DESC		"Ignore VMware Interfaces"
    594 #define SCTPCTL_IGNORE_VMWARE_INTERFACES_MIN		0
    595 #define SCTPCTL_IGNORE_VMWARE_INTERFACES_MAX		1
    596 #define SCTPCTL_IGNORE_VMWARE_INTERFACES_DEFAULT	SCTPCTL_IGNORE_VMWARE_INTERFACES_MAX
    597 #endif
    598 
    599 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
    600 #define SCTPCTL_OUTPUT_UNLOCKED_DESC	"Unlock socket when sending packets down to IP."
    601 #define SCTPCTL_OUTPUT_UNLOCKED_MIN	0
    602 #define SCTPCTL_OUTPUT_UNLOCKED_MAX	1
    603 #define SCTPCTL_OUTPUT_UNLOCKED_DEFAULT	SCTPCTL_OUTPUT_UNLOCKED_MIN
    604 #endif
    605 
    606 #if defined(__APPLE__)
    607 #define	SCTPCTL_ADDR_WATCHDOG_LIMIT_DESC	"Address watchdog limit"
    608 #define	SCTPCTL_ADDR_WATCHDOG_LIMIT_MIN		0
    609 #define	SCTPCTL_ADDR_WATCHDOG_LIMIT_MAX		0xFFFFFFFF
    610 #define	SCTPCTL_ADDR_WATCHDOG_LIMIT_DEFAULT	SCTPCTL_ADDR_WATCHDOG_LIMIT_MIN
    611 
    612 #define	SCTPCTL_VTAG_WATCHDOG_LIMIT_DESC	"VTag watchdog limit"
    613 #define	SCTPCTL_VTAG_WATCHDOG_LIMIT_MIN		0
    614 #define	SCTPCTL_VTAG_WATCHDOG_LIMIT_MAX		0xFFFFFFFF
    615 #define	SCTPCTL_VTAG_WATCHDOG_LIMIT_DEFAULT	SCTPCTL_VTAG_WATCHDOG_LIMIT_MIN
    616 #endif
    617 
    618 #if defined(_KERNEL) || defined(__Userspace__)
    619 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Userspace__)
    620 #if defined(SYSCTL_DECL)
    621 SYSCTL_DECL(_net_inet_sctp);
    622 #endif
    623 #endif
    624 
    625 void sctp_init_sysctls(void);
    626 #if defined(__Windows__)
    627 void sctp_finish_sysctls(void);
    628 #endif
    629 
    630 #endif /* _KERNEL */
    631 #endif /* __sctp_sysctl_h__ */
    632