1 | /* |
2 | * Copyright (c) 2000-2016 Apple Inc. All rights reserved. |
3 | * |
4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
5 | * |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License |
8 | * Version 2.0 (the 'License'). You may not use this file except in |
9 | * compliance with the License. The rights granted to you under the License |
10 | * may not be used to create, or enable the creation or redistribution of, |
11 | * unlawful or unlicensed copies of an Apple operating system, or to |
12 | * circumvent, violate, or enable the circumvention or violation of, any |
13 | * terms of an Apple operating system software license agreement. |
14 | * |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
17 | * |
18 | * The Original Code and all software distributed under the License are |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and |
24 | * limitations under the License. |
25 | * |
26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
27 | */ |
28 | /* |
29 | * Copyright (c) 1982, 1986, 1993 |
30 | * The Regents of the University of California. All rights reserved. |
31 | * |
32 | * Redistribution and use in source and binary forms, with or without |
33 | * modification, are permitted provided that the following conditions |
34 | * are met: |
35 | * 1. Redistributions of source code must retain the above copyright |
36 | * notice, this list of conditions and the following disclaimer. |
37 | * 2. Redistributions in binary form must reproduce the above copyright |
38 | * notice, this list of conditions and the following disclaimer in the |
39 | * documentation and/or other materials provided with the distribution. |
40 | * 3. All advertising materials mentioning features or use of this software |
41 | * must display the following acknowledgement: |
42 | * This product includes software developed by the University of |
43 | * California, Berkeley and its contributors. |
44 | * 4. Neither the name of the University nor the names of its contributors |
45 | * may be used to endorse or promote products derived from this software |
46 | * without specific prior written permission. |
47 | * |
48 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
49 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
50 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
51 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
52 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
53 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
54 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
55 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
56 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
57 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
58 | * SUCH DAMAGE. |
59 | * |
60 | * @(#)tcp.h 8.1 (Berkeley) 6/10/93 |
61 | * $FreeBSD: src/sys/netinet/tcp.h,v 1.13.2.3 2001/03/01 22:08:42 jlemon Exp $ |
62 | */ |
63 | |
64 | #ifndef _NETINET_TCP_H_ |
65 | #define _NETINET_TCP_H_ |
66 | #include <sys/types.h> |
67 | #include <sys/appleapiopts.h> |
68 | #include <machine/endian.h> |
69 | #include <machine/types.h> /* __uint32_t */ |
70 | |
71 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
72 | typedef __uint32_t tcp_seq; |
73 | typedef __uint32_t tcp_cc; /* connection count per rfc1644 */ |
74 | |
75 | #define tcp6_seq tcp_seq /* for KAME src sync over BSD*'s */ |
76 | #define tcp6hdr tcphdr /* for KAME src sync over BSD*'s */ |
77 | |
78 | /* |
79 | * TCP header. |
80 | * Per RFC 793, September, 1981. |
81 | */ |
82 | struct tcphdr { |
83 | unsigned short th_sport; /* source port */ |
84 | unsigned short th_dport; /* destination port */ |
85 | tcp_seq th_seq; /* sequence number */ |
86 | tcp_seq th_ack; /* acknowledgement number */ |
87 | #if __DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN |
88 | unsigned int th_x2:4, /* (unused) */ |
89 | th_off:4; /* data offset */ |
90 | #endif |
91 | #if __DARWIN_BYTE_ORDER == __DARWIN_BIG_ENDIAN |
92 | unsigned int th_off:4, /* data offset */ |
93 | th_x2:4; /* (unused) */ |
94 | #endif |
95 | unsigned char th_flags; |
96 | #define TH_FIN 0x01 |
97 | #define TH_SYN 0x02 |
98 | #define TH_RST 0x04 |
99 | #define TH_PUSH 0x08 |
100 | #define TH_ACK 0x10 |
101 | #define TH_URG 0x20 |
102 | #define TH_ECE 0x40 |
103 | #define TH_CWR 0x80 |
104 | #define TH_FLAGS (TH_FIN|TH_SYN|TH_RST|TH_ACK|TH_URG|TH_ECE|TH_CWR) |
105 | #define TH_ACCEPT (TH_FIN|TH_SYN|TH_RST|TH_ACK) |
106 | |
107 | unsigned short th_win; /* window */ |
108 | unsigned short th_sum; /* checksum */ |
109 | unsigned short th_urp; /* urgent pointer */ |
110 | }; |
111 | |
112 | #define TCPOPT_EOL 0 |
113 | #define TCPOPT_NOP 1 |
114 | #define TCPOPT_MAXSEG 2 |
115 | #define TCPOLEN_MAXSEG 4 |
116 | #define TCPOPT_WINDOW 3 |
117 | #define TCPOLEN_WINDOW 3 |
118 | #define TCPOPT_SACK_PERMITTED 4 /* Experimental */ |
119 | #define TCPOLEN_SACK_PERMITTED 2 |
120 | #define TCPOPT_SACK 5 /* Experimental */ |
121 | #define TCPOLEN_SACK 8 /* len of sack block */ |
122 | #define TCPOPT_TIMESTAMP 8 |
123 | #define TCPOLEN_TIMESTAMP 10 |
124 | #define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ |
125 | #define TCPOPT_TSTAMP_HDR \ |
126 | (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) |
127 | |
128 | #define MAX_TCPOPTLEN 40 /* Absolute maximum TCP options len */ |
129 | |
130 | #define TCPOPT_CC 11 /* CC options: RFC-1644 */ |
131 | #define TCPOPT_CCNEW 12 |
132 | #define TCPOPT_CCECHO 13 |
133 | #define TCPOLEN_CC 6 |
134 | #define TCPOLEN_CC_APPA (TCPOLEN_CC+2) |
135 | #define TCPOPT_CC_HDR(ccopt) \ |
136 | (TCPOPT_NOP<<24|TCPOPT_NOP<<16|(ccopt)<<8|TCPOLEN_CC) |
137 | #define TCPOPT_SIGNATURE 19 /* Keyed MD5: RFC 2385 */ |
138 | #define TCPOLEN_SIGNATURE 18 |
139 | #if MPTCP |
140 | #define TCPOPT_MULTIPATH 30 |
141 | #endif |
142 | |
143 | #define TCPOPT_FASTOPEN 34 |
144 | #define TCPOLEN_FASTOPEN_REQ 2 |
145 | |
146 | /* Option definitions */ |
147 | #define TCPOPT_SACK_PERMIT_HDR \ |
148 | (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_SACK_PERMITTED<<8|TCPOLEN_SACK_PERMITTED) |
149 | #define TCPOPT_SACK_HDR (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_SACK<<8) |
150 | /* Miscellaneous constants */ |
151 | #define MAX_SACK_BLKS 6 /* Max # SACK blocks stored at sender side */ |
152 | |
153 | /* |
154 | * A SACK option that specifies n blocks will have a length of (8*n + 2) |
155 | * bytes, so the 40 bytes available for TCP options can specify a |
156 | * maximum of 4 blocks. |
157 | */ |
158 | |
159 | #define TCP_MAX_SACK 4 /* MAX # SACKs sent in any segment */ |
160 | |
161 | |
162 | /* |
163 | * Default maximum segment size for TCP. |
164 | * With an IP MTU of 576, this is 536, |
165 | * but 512 is probably more convenient. |
166 | * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)). |
167 | */ |
168 | #define TCP_MSS 512 |
169 | |
170 | /* |
171 | * TCP_MINMSS is defined to be 216 which is fine for the smallest |
172 | * link MTU (256 bytes, SLIP interface) in the Internet. |
173 | * However it is very unlikely to come across such low MTU interfaces |
174 | * these days (anno dato 2004). |
175 | * Probably it can be set to 512 without ill effects. But we play safe. |
176 | * See tcp_subr.c tcp_minmss SYSCTL declaration for more comments. |
177 | * Setting this to "0" disables the minmss check. |
178 | */ |
179 | #define TCP_MINMSS 216 |
180 | |
181 | /* |
182 | * Default maximum segment size for TCP6. |
183 | * With an IP6 MSS of 1280, this is 1220, |
184 | * but 1024 is probably more convenient. (xxx kazu in doubt) |
185 | * This should be defined as MIN(1024, IP6_MSS - sizeof (struct tcpip6hdr)) |
186 | */ |
187 | #define TCP6_MSS 1024 |
188 | |
189 | #define TCP_MAXWIN 65535 /* largest value for (unscaled) window */ |
190 | #define TTCP_CLIENT_SND_WND 4096 /* dflt send window for T/TCP client */ |
191 | |
192 | #define TCP_MAX_WINSHIFT 14 /* maximum window shift */ |
193 | |
194 | #define TCP_MAXHLEN (0xf<<2) /* max length of header in bytes */ |
195 | #define TCP_MAXOLEN (TCP_MAXHLEN - sizeof(struct tcphdr)) |
196 | /* max space left for options */ |
197 | #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ |
198 | |
199 | /* |
200 | * User-settable options (used with setsockopt). |
201 | */ |
202 | #define TCP_NODELAY 0x01 /* don't delay send to coalesce packets */ |
203 | #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) |
204 | #define TCP_MAXSEG 0x02 /* set maximum segment size */ |
205 | #define TCP_NOPUSH 0x04 /* don't push last block of write */ |
206 | #define TCP_NOOPT 0x08 /* don't use TCP options */ |
207 | #define TCP_KEEPALIVE 0x10 /* idle time used when SO_KEEPALIVE is enabled */ |
208 | #define TCP_CONNECTIONTIMEOUT 0x20 /* connection timeout */ |
209 | #define PERSIST_TIMEOUT 0x40 /* time after which a connection in |
210 | * persist timeout will terminate. |
211 | * see draft-ananth-tcpm-persist-02.txt |
212 | */ |
213 | #define TCP_RXT_CONNDROPTIME 0x80 /* time after which tcp retransmissions will be |
214 | * stopped and the connection will be dropped |
215 | */ |
216 | #define TCP_RXT_FINDROP 0x100 /* when this option is set, drop a connection |
217 | * after retransmitting the FIN 3 times. It will |
218 | * prevent holding too many mbufs in socket |
219 | * buffer queues. |
220 | */ |
221 | #define TCP_KEEPINTVL 0x101 /* interval between keepalives */ |
222 | #define TCP_KEEPCNT 0x102 /* number of keepalives before close */ |
223 | #define TCP_SENDMOREACKS 0x103 /* always ack every other packet */ |
224 | #define TCP_ENABLE_ECN 0x104 /* Enable ECN on a connection */ |
225 | #define TCP_FASTOPEN 0x105 /* Enable/Disable TCP Fastopen on this socket */ |
226 | #define TCP_CONNECTION_INFO 0x106 /* State of TCP connection */ |
227 | |
228 | #ifdef PRIVATE |
229 | #define TCP_INFO 0x200 /* retrieve tcp_info structure */ |
230 | #define TCP_MEASURE_SND_BW 0x202 /* Measure sender's bandwidth for this connection */ |
231 | #endif /* PRIVATE */ |
232 | |
233 | |
234 | #define TCP_NOTSENT_LOWAT 0x201 /* Low water mark for TCP unsent data */ |
235 | |
236 | #ifdef PRIVATE |
237 | #define TCP_MEASURE_BW_BURST 0x203 /* Burst size to use for bandwidth measurement */ |
238 | #define TCP_PEER_PID 0x204 /* Lookup pid of the process we're connected to */ |
239 | #define TCP_ADAPTIVE_READ_TIMEOUT 0x205 /* Read timeout used as a multiple of RTT */ |
240 | /* |
241 | * Enable message delivery on a socket, this feature is currently unsupported and |
242 | * is subjected to change in future. |
243 | */ |
244 | #define TCP_ENABLE_MSGS 0x206 |
245 | #define TCP_ADAPTIVE_WRITE_TIMEOUT 0x207 /* Write timeout used as a multiple of RTT */ |
246 | #define TCP_NOTIMEWAIT 0x208 /* Avoid going into time-wait */ |
247 | #define TCP_DISABLE_BLACKHOLE_DETECTION 0x209 /* disable PMTU blackhole detection */ |
248 | #define TCP_ECN_MODE 0x210 /* fine grain control for A/B testing */ |
249 | #define TCP_KEEPALIVE_OFFLOAD 0x211 /* offload keep alive processing to firmware */ |
250 | |
251 | /* |
252 | * TCP_ECN_MODE values |
253 | */ |
254 | #define ECN_MODE_DEFAULT 0x0 /* per interface or system wide default */ |
255 | #define ECN_MODE_ENABLE 0x1 /* force enable ECN on connection */ |
256 | #define ECN_MODE_DISABLE 0x2 /* force disable ECN on connection */ |
257 | |
258 | /* |
259 | * TCP_NOTIFY_ACKNOWLEDGEMENT |
260 | * |
261 | * Application can use this socket option to get a notification when |
262 | * data that is currently written to the socket is acknowledged. The input |
263 | * argument given to this socket option is a marker_id that will be used for |
264 | * returning the notification. The application can continue to write |
265 | * data after setting the marker. There can be multiple of these events |
266 | * outstanding on a socket at any time up to a max of TCP_MAX_NOTIFY_ACK. |
267 | * |
268 | * To get the completed notifications, getsockopt should be called with the |
269 | * TCP_NOTIFY_ACKNOWLEDGEMENT with the following tcp_notify_ack_complete |
270 | * structure as an out argument. At most TCP_MAX_NOTIFY_ACK ids will be |
271 | * returned if they have been successfully acknowledged in each call. |
272 | */ |
273 | |
274 | #define TCP_MAX_NOTIFY_ACK 10 |
275 | |
276 | typedef u_int32_t tcp_notify_ack_id_t; |
277 | |
278 | struct tcp_notify_ack_complete { |
279 | u_int32_t notify_pending; /* still pending */ |
280 | u_int32_t notify_complete_count; |
281 | tcp_notify_ack_id_t notify_complete_id[TCP_MAX_NOTIFY_ACK]; |
282 | }; |
283 | |
284 | #define TCP_NOTIFY_ACKNOWLEDGEMENT 0x212 /* Notify when data is acknowledged */ |
285 | #define MPTCP_SERVICE_TYPE 0x213 /* MPTCP Service type */ |
286 | #define TCP_FASTOPEN_FORCE_HEURISTICS 0x214 /* Make sure TFO-heuristics never get disabled */ |
287 | |
288 | #define MPTCP_SVCTYPE_HANDOVER 0 /* Default 0 */ |
289 | #define MPTCP_SVCTYPE_INTERACTIVE 1 |
290 | #define MPTCP_SVCTYPE_AGGREGATE 2 |
291 | #define MPTCP_SVCTYPE_MAX 3 |
292 | /* |
293 | * Specify minimum time in seconds before which an established |
294 | * TCP connection will not be dropped when there is no response from the |
295 | * peer |
296 | */ |
297 | #define TCP_RXT_MINIMUM_TIMEOUT 0x215 |
298 | |
299 | #define TCP_RXT_MINIMUM_TIMEOUT_LIMIT (5 * 60) /* Limit is 5 minutes */ |
300 | |
301 | #define MPTCP_ALTERNATE_PORT 0x216 |
302 | |
303 | /* |
304 | * The TCP_INFO socket option is a private API and is subject to change |
305 | */ |
306 | #pragma pack(4) |
307 | |
308 | #define TCPI_OPT_TIMESTAMPS 0x01 |
309 | #define TCPI_OPT_SACK 0x02 |
310 | #define TCPI_OPT_WSCALE 0x04 |
311 | #define TCPI_OPT_ECN 0x08 |
312 | |
313 | #define TCPI_FLAG_LOSSRECOVERY 0x01 /* Currently in loss recovery */ |
314 | #define TCPI_FLAG_STREAMING_ON 0x02 /* Streaming detection on */ |
315 | |
316 | struct tcp_conn_status { |
317 | unsigned int probe_activated : 1; |
318 | unsigned int write_probe_failed : 1; |
319 | unsigned int read_probe_failed : 1; |
320 | unsigned int conn_probe_failed : 1; |
321 | }; |
322 | |
323 | /* |
324 | * Add new fields to this structure at the end only. This will preserve |
325 | * binary compatibility. |
326 | */ |
327 | struct tcp_info { |
328 | u_int8_t tcpi_state; /* TCP FSM state. */ |
329 | u_int8_t tcpi_options; /* Options enabled on conn. */ |
330 | u_int8_t tcpi_snd_wscale; /* RFC1323 send shift value. */ |
331 | u_int8_t tcpi_rcv_wscale; /* RFC1323 recv shift value. */ |
332 | |
333 | u_int32_t tcpi_flags; /* extra flags (TCPI_FLAG_xxx) */ |
334 | |
335 | u_int32_t tcpi_rto; /* Retransmission timeout in milliseconds */ |
336 | u_int32_t tcpi_snd_mss; /* Max segment size for send. */ |
337 | u_int32_t tcpi_rcv_mss; /* Max segment size for receive. */ |
338 | |
339 | u_int32_t tcpi_rttcur; /* Most recent value of RTT */ |
340 | u_int32_t tcpi_srtt; /* Smoothed RTT */ |
341 | u_int32_t tcpi_rttvar; /* RTT variance */ |
342 | u_int32_t tcpi_rttbest; /* Best RTT we've seen */ |
343 | |
344 | u_int32_t tcpi_snd_ssthresh; /* Slow start threshold. */ |
345 | u_int32_t tcpi_snd_cwnd; /* Send congestion window. */ |
346 | |
347 | u_int32_t tcpi_rcv_space; /* Advertised recv window. */ |
348 | |
349 | u_int32_t tcpi_snd_wnd; /* Advertised send window. */ |
350 | u_int32_t tcpi_snd_nxt; /* Next egress seqno */ |
351 | u_int32_t tcpi_rcv_nxt; /* Next ingress seqno */ |
352 | |
353 | int32_t tcpi_last_outif; /* if_index of interface used to send last */ |
354 | u_int32_t tcpi_snd_sbbytes; /* bytes in snd buffer including data inflight */ |
355 | |
356 | u_int64_t tcpi_txpackets __attribute__((aligned(8))); /* total packets sent */ |
357 | u_int64_t tcpi_txbytes __attribute__((aligned(8))); |
358 | /* total bytes sent */ |
359 | u_int64_t tcpi_txretransmitbytes __attribute__((aligned(8))); |
360 | /* total bytes retransmitted */ |
361 | u_int64_t tcpi_txunacked __attribute__((aligned(8))); |
362 | /* current number of bytes not acknowledged */ |
363 | u_int64_t tcpi_rxpackets __attribute__((aligned(8))); /* total packets received */ |
364 | u_int64_t tcpi_rxbytes __attribute__((aligned(8))); |
365 | /* total bytes received */ |
366 | u_int64_t tcpi_rxduplicatebytes __attribute__((aligned(8))); |
367 | /* total duplicate bytes received */ |
368 | u_int64_t tcpi_rxoutoforderbytes __attribute__((aligned(8))); |
369 | /* total out of order bytes received */ |
370 | u_int64_t tcpi_snd_bw __attribute__((aligned(8))); /* measured send bandwidth in bits/sec */ |
371 | u_int8_t tcpi_synrexmits; /* Number of syn retransmits before connect */ |
372 | u_int8_t tcpi_unused1; |
373 | u_int16_t tcpi_unused2; |
374 | u_int64_t tcpi_cell_rxpackets __attribute((aligned(8))); /* packets received over cellular */ |
375 | u_int64_t tcpi_cell_rxbytes __attribute((aligned(8))); /* bytes received over cellular */ |
376 | u_int64_t tcpi_cell_txpackets __attribute((aligned(8))); /* packets transmitted over cellular */ |
377 | u_int64_t tcpi_cell_txbytes __attribute((aligned(8))); /* bytes transmitted over cellular */ |
378 | u_int64_t tcpi_wifi_rxpackets __attribute((aligned(8))); /* packets received over Wi-Fi */ |
379 | u_int64_t tcpi_wifi_rxbytes __attribute((aligned(8))); /* bytes received over Wi-Fi */ |
380 | u_int64_t tcpi_wifi_txpackets __attribute((aligned(8))); /* packets transmitted over Wi-Fi */ |
381 | u_int64_t tcpi_wifi_txbytes __attribute((aligned(8))); /* bytes transmitted over Wi-Fi */ |
382 | u_int64_t tcpi_wired_rxpackets __attribute((aligned(8))); /* packets received over Wired */ |
383 | u_int64_t tcpi_wired_rxbytes __attribute((aligned(8))); /* bytes received over Wired */ |
384 | u_int64_t tcpi_wired_txpackets __attribute((aligned(8))); /* packets transmitted over Wired */ |
385 | u_int64_t tcpi_wired_txbytes __attribute((aligned(8))); /* bytes transmitted over Wired */ |
386 | struct tcp_conn_status tcpi_connstatus; /* status of connection probes */ |
387 | |
388 | u_int16_t |
389 | tcpi_tfo_cookie_req:1, /* Cookie requested? */ |
390 | tcpi_tfo_cookie_rcv:1, /* Cookie received? */ |
391 | tcpi_tfo_syn_loss:1, /* Fallback to reg. TCP after SYN-loss */ |
392 | tcpi_tfo_syn_data_sent:1, /* SYN+data has been sent out */ |
393 | tcpi_tfo_syn_data_acked:1, /* SYN+data has been fully acknowledged */ |
394 | tcpi_tfo_syn_data_rcv:1, /* Server received SYN+data with a valid cookie */ |
395 | tcpi_tfo_cookie_req_rcv:1, /* Server received cookie-request */ |
396 | tcpi_tfo_cookie_sent:1, /* Server announced cookie */ |
397 | tcpi_tfo_cookie_invalid:1, /* Server received an invalid cookie */ |
398 | tcpi_tfo_cookie_wrong:1, /* Our sent cookie was wrong */ |
399 | tcpi_tfo_no_cookie_rcv:1, /* We did not receive a cookie upon our request */ |
400 | tcpi_tfo_heuristics_disable:1, /* TFO-heuristics disabled it */ |
401 | tcpi_tfo_send_blackhole:1, /* A sending-blackhole got detected */ |
402 | tcpi_tfo_recv_blackhole:1, /* A receiver-blackhole got detected */ |
403 | tcpi_tfo_onebyte_proxy:1; /* A proxy acknowledges all but one byte of the SYN */ |
404 | |
405 | u_int16_t tcpi_ecn_client_setup:1, /* Attempted ECN setup from client side */ |
406 | tcpi_ecn_server_setup:1, /* Attempted ECN setup from server side */ |
407 | tcpi_ecn_success:1, /* peer negotiated ECN */ |
408 | tcpi_ecn_lost_syn:1, /* Lost SYN with ECN setup */ |
409 | tcpi_ecn_lost_synack:1, /* Lost SYN-ACK with ECN setup */ |
410 | tcpi_local_peer:1, /* Local to the host or the subnet */ |
411 | tcpi_if_cell:1, /* Interface is cellular */ |
412 | tcpi_if_wifi:1, /* Interface is WiFi */ |
413 | tcpi_if_wired:1, /* Interface is wired - ethernet , thunderbolt etc,. */ |
414 | tcpi_if_wifi_infra:1, /* Interface is wifi infrastructure */ |
415 | tcpi_if_wifi_awdl:1, /* Interface is wifi AWDL */ |
416 | tcpi_snd_background:1, /* Using delay based algorithm on sender side */ |
417 | tcpi_rcv_background:1; /* Using delay based algorithm on receive side */ |
418 | |
419 | u_int32_t tcpi_ecn_recv_ce; /* Packets received with CE */ |
420 | u_int32_t tcpi_ecn_recv_cwr; /* Packets received with CWR */ |
421 | |
422 | u_int32_t tcpi_rcvoopack; /* out-of-order packets received */ |
423 | u_int32_t tcpi_pawsdrop; /* segments dropped due to PAWS */ |
424 | u_int32_t tcpi_sack_recovery_episode; /* SACK recovery episodes */ |
425 | u_int32_t tcpi_reordered_pkts; /* packets reorderd */ |
426 | u_int32_t tcpi_dsack_sent; /* Sent DSACK notification */ |
427 | u_int32_t tcpi_dsack_recvd; /* Received a valid DSACK option */ |
428 | u_int32_t tcpi_flowhash; /* Unique id for the connection */ |
429 | |
430 | u_int64_t tcpi_txretransmitpackets __attribute__((aligned(8))); |
431 | }; |
432 | |
433 | struct tcp_measure_bw_burst { |
434 | u_int32_t min_burst_size; /* Minimum number of packets to use */ |
435 | u_int32_t max_burst_size; /* Maximum number of packets to use */ |
436 | }; |
437 | |
438 | /* |
439 | * Note that IPv6 link local addresses should have the appropriate scope ID |
440 | */ |
441 | |
442 | struct info_tuple { |
443 | u_int8_t itpl_proto; |
444 | union { |
445 | struct sockaddr _itpl_sa; |
446 | struct sockaddr_in _itpl_sin; |
447 | struct sockaddr_in6 _itpl_sin6; |
448 | } itpl_localaddr; |
449 | union { |
450 | struct sockaddr _itpl_sa; |
451 | struct sockaddr_in _itpl_sin; |
452 | struct sockaddr_in6 _itpl_sin6; |
453 | } itpl_remoteaddr; |
454 | }; |
455 | |
456 | #define itpl_local_sa itpl_localaddr._itpl_sa |
457 | #define itpl_local_sin itpl_localaddr._itpl_sin |
458 | #define itpl_local_sin6 itpl_localaddr._itpl_sin6 |
459 | #define itpl_remote_sa itpl_remoteaddr._itpl_sa |
460 | #define itpl_remote_sin itpl_remoteaddr._itpl_sin |
461 | #define itpl_remote_sin6 itpl_remoteaddr._itpl_sin6 |
462 | |
463 | /* |
464 | * TCP connection info auxiliary data (CIAUX_TCP) |
465 | * |
466 | * Do not add new fields to this structure, just add them to tcp_info |
467 | * structure towards the end. This will preserve binary compatibility. |
468 | */ |
469 | typedef struct conninfo_tcp { |
470 | pid_t tcpci_peer_pid; /* loopback peer PID if > 0 */ |
471 | struct tcp_info tcpci_tcp_info; /* TCP info */ |
472 | } conninfo_tcp_t; |
473 | |
474 | #pragma pack() |
475 | |
476 | struct mptcp_itf_stats { |
477 | uint16_t ifindex; |
478 | uint16_t switches; |
479 | uint32_t is_expensive:1; |
480 | uint64_t mpis_txbytes __attribute__((aligned(8))); |
481 | uint64_t mpis_rxbytes __attribute__((aligned(8))); |
482 | }; |
483 | |
484 | /* Version solely used to let libnetcore survive */ |
485 | #define CONNINFO_MPTCP_VERSION 3 |
486 | typedef struct conninfo_multipathtcp { |
487 | uint32_t mptcpci_subflow_count; |
488 | uint32_t mptcpci_switch_count; |
489 | sae_connid_t mptcpci_subflow_connids[4]; |
490 | |
491 | uint64_t mptcpci_init_rxbytes; |
492 | uint64_t mptcpci_init_txbytes; |
493 | |
494 | #define MPTCP_ITFSTATS_SIZE 4 |
495 | struct mptcp_itf_stats mptcpci_itfstats[MPTCP_ITFSTATS_SIZE]; |
496 | |
497 | uint32_t mptcpci_flags; |
498 | #define MPTCPCI_FIRSTPARTY 0x01 |
499 | } conninfo_multipathtcp_t; |
500 | |
501 | #endif /* PRIVATE */ |
502 | |
503 | struct tcp_connection_info { |
504 | u_int8_t tcpi_state; /* connection state */ |
505 | u_int8_t tcpi_snd_wscale; /* Window scale for send window */ |
506 | u_int8_t tcpi_rcv_wscale; /* Window scale for receive window */ |
507 | u_int8_t __pad1; |
508 | u_int32_t tcpi_options; /* TCP options supported */ |
509 | #define TCPCI_OPT_TIMESTAMPS 0x00000001 /* Timestamps enabled */ |
510 | #define TCPCI_OPT_SACK 0x00000002 /* SACK enabled */ |
511 | #define TCPCI_OPT_WSCALE 0x00000004 /* Window scaling enabled */ |
512 | #define TCPCI_OPT_ECN 0x00000008 /* ECN enabled */ |
513 | u_int32_t tcpi_flags; /* flags */ |
514 | #define TCPCI_FLAG_LOSSRECOVERY 0x00000001 |
515 | #define TCPCI_FLAG_REORDERING_DETECTED 0x00000002 |
516 | u_int32_t tcpi_rto; /* retransmit timeout in ms */ |
517 | u_int32_t tcpi_maxseg; /* maximum segment size supported */ |
518 | u_int32_t tcpi_snd_ssthresh; /* slow start threshold in bytes */ |
519 | u_int32_t tcpi_snd_cwnd; /* send congestion window in bytes */ |
520 | u_int32_t tcpi_snd_wnd; /* send widnow in bytes */ |
521 | u_int32_t tcpi_snd_sbbytes; /* bytes in send socket buffer, including in-flight data */ |
522 | u_int32_t tcpi_rcv_wnd; /* receive window in bytes*/ |
523 | u_int32_t tcpi_rttcur; /* most recent RTT in ms */ |
524 | u_int32_t tcpi_srtt; /* average RTT in ms */ |
525 | u_int32_t tcpi_rttvar; /* RTT variance */ |
526 | u_int32_t |
527 | tcpi_tfo_cookie_req:1, /* Cookie requested? */ |
528 | tcpi_tfo_cookie_rcv:1, /* Cookie received? */ |
529 | tcpi_tfo_syn_loss:1, /* Fallback to reg. TCP after SYN-loss */ |
530 | tcpi_tfo_syn_data_sent:1, /* SYN+data has been sent out */ |
531 | tcpi_tfo_syn_data_acked:1, /* SYN+data has been fully acknowledged */ |
532 | tcpi_tfo_syn_data_rcv:1, /* Server received SYN+data with a valid cookie */ |
533 | tcpi_tfo_cookie_req_rcv:1, /* Server received cookie-request */ |
534 | tcpi_tfo_cookie_sent:1, /* Server announced cookie */ |
535 | tcpi_tfo_cookie_invalid:1, /* Server received an invalid cookie */ |
536 | tcpi_tfo_cookie_wrong:1, /* Our sent cookie was wrong */ |
537 | tcpi_tfo_no_cookie_rcv:1, /* We did not receive a cookie upon our request */ |
538 | tcpi_tfo_heuristics_disable:1, /* TFO-heuristics disabled it */ |
539 | tcpi_tfo_send_blackhole:1, /* A sending-blackhole got detected */ |
540 | tcpi_tfo_recv_blackhole:1, /* A receiver-blackhole got detected */ |
541 | tcpi_tfo_onebyte_proxy:1, /* A proxy acknowledges all but one byte of the SYN */ |
542 | __pad2:17; |
543 | u_int64_t tcpi_txpackets __attribute__((aligned(8))); |
544 | u_int64_t tcpi_txbytes __attribute__((aligned(8))); |
545 | u_int64_t tcpi_txretransmitbytes __attribute__((aligned(8))); |
546 | u_int64_t tcpi_rxpackets __attribute__((aligned(8))); |
547 | u_int64_t tcpi_rxbytes __attribute__((aligned(8))); |
548 | u_int64_t tcpi_rxoutoforderbytes __attribute__((aligned(8))); |
549 | u_int64_t tcpi_txretransmitpackets __attribute__((aligned(8))); |
550 | }; |
551 | #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ |
552 | |
553 | #endif |
554 | |