1 | /* $NetBSD: tcp_usrreq.c,v 1.213 2016/11/18 06:50:04 knakahara Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. |
5 | * All rights reserved. |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
8 | * modification, are permitted provided that the following conditions |
9 | * are met: |
10 | * 1. Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
15 | * 3. Neither the name of the project nor the names of its contributors |
16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | */ |
31 | |
32 | /*- |
33 | * Copyright (c) 1997, 1998, 2005, 2006 The NetBSD Foundation, Inc. |
34 | * All rights reserved. |
35 | * |
36 | * This code is derived from software contributed to The NetBSD Foundation |
37 | * by Jason R. Thorpe and Kevin M. Lahey of the Numerical Aerospace Simulation |
38 | * Facility, NASA Ames Research Center. |
39 | * This code is derived from software contributed to The NetBSD Foundation |
40 | * by Charles M. Hannum. |
41 | * This code is derived from software contributed to The NetBSD Foundation |
42 | * by Rui Paulo. |
43 | * |
44 | * Redistribution and use in source and binary forms, with or without |
45 | * modification, are permitted provided that the following conditions |
46 | * are met: |
47 | * 1. Redistributions of source code must retain the above copyright |
48 | * notice, this list of conditions and the following disclaimer. |
49 | * 2. Redistributions in binary form must reproduce the above copyright |
50 | * notice, this list of conditions and the following disclaimer in the |
51 | * documentation and/or other materials provided with the distribution. |
52 | * |
53 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
54 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
55 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
56 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
57 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
58 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
59 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
60 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
61 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
62 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
63 | * POSSIBILITY OF SUCH DAMAGE. |
64 | */ |
65 | |
66 | /* |
67 | * Copyright (c) 1982, 1986, 1988, 1993, 1995 |
68 | * The Regents of the University of California. All rights reserved. |
69 | * |
70 | * Redistribution and use in source and binary forms, with or without |
71 | * modification, are permitted provided that the following conditions |
72 | * are met: |
73 | * 1. Redistributions of source code must retain the above copyright |
74 | * notice, this list of conditions and the following disclaimer. |
75 | * 2. Redistributions in binary form must reproduce the above copyright |
76 | * notice, this list of conditions and the following disclaimer in the |
77 | * documentation and/or other materials provided with the distribution. |
78 | * 3. Neither the name of the University nor the names of its contributors |
79 | * may be used to endorse or promote products derived from this software |
80 | * without specific prior written permission. |
81 | * |
82 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
83 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
84 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
85 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
86 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
87 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
88 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
89 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
90 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
91 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
92 | * SUCH DAMAGE. |
93 | * |
94 | * @(#)tcp_usrreq.c 8.5 (Berkeley) 6/21/95 |
95 | */ |
96 | |
97 | /* |
98 | * TCP protocol interface to socket abstraction. |
99 | */ |
100 | |
101 | #include <sys/cdefs.h> |
102 | __KERNEL_RCSID(0, "$NetBSD: tcp_usrreq.c,v 1.213 2016/11/18 06:50:04 knakahara Exp $" ); |
103 | |
104 | #ifdef _KERNEL_OPT |
105 | #include "opt_inet.h" |
106 | #include "opt_tcp_debug.h" |
107 | #include "opt_mbuftrace.h" |
108 | #include "opt_tcp_space.h" |
109 | #include "opt_net_mpsafe.h" |
110 | #endif |
111 | |
112 | #include <sys/param.h> |
113 | #include <sys/systm.h> |
114 | #include <sys/kernel.h> |
115 | #include <sys/mbuf.h> |
116 | #include <sys/socket.h> |
117 | #include <sys/socketvar.h> |
118 | #include <sys/protosw.h> |
119 | #include <sys/errno.h> |
120 | #include <sys/stat.h> |
121 | #include <sys/proc.h> |
122 | #include <sys/domain.h> |
123 | #include <sys/sysctl.h> |
124 | #include <sys/kauth.h> |
125 | #include <sys/kernel.h> |
126 | #include <sys/uidinfo.h> |
127 | |
128 | #include <net/if.h> |
129 | |
130 | #include <netinet/in.h> |
131 | #include <netinet/in_systm.h> |
132 | #include <netinet/in_var.h> |
133 | #include <netinet/ip.h> |
134 | #include <netinet/in_pcb.h> |
135 | #include <netinet/ip_var.h> |
136 | #include <netinet/in_offload.h> |
137 | |
138 | #ifdef INET6 |
139 | #ifndef INET |
140 | #include <netinet/in.h> |
141 | #endif |
142 | #include <netinet/ip6.h> |
143 | #include <netinet6/in6_pcb.h> |
144 | #include <netinet6/ip6_var.h> |
145 | #include <netinet6/scope6_var.h> |
146 | #endif |
147 | |
148 | #include <netinet/tcp.h> |
149 | #include <netinet/tcp_fsm.h> |
150 | #include <netinet/tcp_seq.h> |
151 | #include <netinet/tcp_timer.h> |
152 | #include <netinet/tcp_var.h> |
153 | #include <netinet/tcp_private.h> |
154 | #include <netinet/tcp_congctl.h> |
155 | #include <netinet/tcpip.h> |
156 | #include <netinet/tcp_debug.h> |
157 | #include <netinet/tcp_vtw.h> |
158 | |
159 | static int |
160 | tcp_debug_capture(struct tcpcb *tp, int req) |
161 | { |
162 | #ifdef KPROF |
163 | tcp_acounts[tp->t_state][req]++; |
164 | #endif |
165 | #ifdef TCP_DEBUG |
166 | return tp->t_state; |
167 | #endif |
168 | return 0; |
169 | } |
170 | |
171 | static inline void |
172 | tcp_debug_trace(struct socket *so, struct tcpcb *tp, int ostate, int req) |
173 | { |
174 | #ifdef TCP_DEBUG |
175 | if (tp && (so->so_options & SO_DEBUG)) |
176 | tcp_trace(TA_USER, ostate, tp, NULL, req); |
177 | #endif |
178 | } |
179 | |
180 | static int |
181 | tcp_getpcb(struct socket *so, struct inpcb **inp, |
182 | struct in6pcb **in6p, struct tcpcb **tp) |
183 | { |
184 | |
185 | KASSERT(solocked(so)); |
186 | |
187 | /* |
188 | * When a TCP is attached to a socket, then there will be |
189 | * a (struct inpcb) pointed at by the socket, and this |
190 | * structure will point at a subsidary (struct tcpcb). |
191 | */ |
192 | switch (so->so_proto->pr_domain->dom_family) { |
193 | #ifdef INET |
194 | case PF_INET: |
195 | *inp = sotoinpcb(so); |
196 | if (*inp == NULL) |
197 | return EINVAL; |
198 | *tp = intotcpcb(*inp); |
199 | break; |
200 | #endif |
201 | #ifdef INET6 |
202 | case PF_INET6: |
203 | *in6p = sotoin6pcb(so); |
204 | if (*in6p == NULL) |
205 | return EINVAL; |
206 | *tp = in6totcpcb(*in6p); |
207 | break; |
208 | #endif |
209 | default: |
210 | return EAFNOSUPPORT; |
211 | } |
212 | |
213 | KASSERT(tp != NULL); |
214 | |
215 | return 0; |
216 | } |
217 | |
218 | static void |
219 | change_keepalive(struct socket *so, struct tcpcb *tp) |
220 | { |
221 | tp->t_maxidle = tp->t_keepcnt * tp->t_keepintvl; |
222 | TCP_TIMER_DISARM(tp, TCPT_KEEP); |
223 | TCP_TIMER_DISARM(tp, TCPT_2MSL); |
224 | |
225 | if (tp->t_state == TCPS_SYN_RECEIVED || |
226 | tp->t_state == TCPS_SYN_SENT) { |
227 | TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepinit); |
228 | } else if (so->so_options & SO_KEEPALIVE && |
229 | tp->t_state <= TCPS_CLOSE_WAIT) { |
230 | TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepintvl); |
231 | } else { |
232 | TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepidle); |
233 | } |
234 | |
235 | if ((tp->t_state == TCPS_FIN_WAIT_2) && (tp->t_maxidle > 0)) |
236 | TCP_TIMER_ARM(tp, TCPT_2MSL, tp->t_maxidle); |
237 | } |
238 | |
239 | /* |
240 | * Export TCP internal state information via a struct tcp_info, based on the |
241 | * Linux 2.6 API. Not ABI compatible as our constants are mapped differently |
242 | * (TCP state machine, etc). We export all information using FreeBSD-native |
243 | * constants -- for example, the numeric values for tcpi_state will differ |
244 | * from Linux. |
245 | */ |
246 | static void |
247 | tcp_fill_info(struct tcpcb *tp, struct tcp_info *ti) |
248 | { |
249 | |
250 | bzero(ti, sizeof(*ti)); |
251 | |
252 | ti->tcpi_state = tp->t_state; |
253 | if ((tp->t_flags & TF_REQ_TSTMP) && (tp->t_flags & TF_RCVD_TSTMP)) |
254 | ti->tcpi_options |= TCPI_OPT_TIMESTAMPS; |
255 | if (tp->t_flags & TF_SACK_PERMIT) |
256 | ti->tcpi_options |= TCPI_OPT_SACK; |
257 | if ((tp->t_flags & TF_REQ_SCALE) && (tp->t_flags & TF_RCVD_SCALE)) { |
258 | ti->tcpi_options |= TCPI_OPT_WSCALE; |
259 | ti->tcpi_snd_wscale = tp->snd_scale; |
260 | ti->tcpi_rcv_wscale = tp->rcv_scale; |
261 | } |
262 | if (tp->t_flags & TF_ECN_PERMIT) { |
263 | ti->tcpi_options |= TCPI_OPT_ECN; |
264 | } |
265 | |
266 | ti->tcpi_rto = tp->t_rxtcur * tick; |
267 | ti->tcpi_last_data_recv = (long)(hardclock_ticks - |
268 | (int)tp->t_rcvtime) * tick; |
269 | ti->tcpi_rtt = ((u_int64_t)tp->t_srtt * tick) >> TCP_RTT_SHIFT; |
270 | ti->tcpi_rttvar = ((u_int64_t)tp->t_rttvar * tick) >> TCP_RTTVAR_SHIFT; |
271 | |
272 | ti->tcpi_snd_ssthresh = tp->snd_ssthresh; |
273 | /* Linux API wants these in # of segments, apparently */ |
274 | ti->tcpi_snd_cwnd = tp->snd_cwnd / tp->t_segsz; |
275 | ti->tcpi_snd_wnd = tp->snd_wnd / tp->t_segsz; |
276 | |
277 | /* |
278 | * FreeBSD-specific extension fields for tcp_info. |
279 | */ |
280 | ti->tcpi_rcv_space = tp->rcv_wnd; |
281 | ti->tcpi_rcv_nxt = tp->rcv_nxt; |
282 | ti->tcpi_snd_bwnd = 0; /* Unused, kept for compat. */ |
283 | ti->tcpi_snd_nxt = tp->snd_nxt; |
284 | ti->tcpi_snd_mss = tp->t_segsz; |
285 | ti->tcpi_rcv_mss = tp->t_segsz; |
286 | #ifdef TF_TOE |
287 | if (tp->t_flags & TF_TOE) |
288 | ti->tcpi_options |= TCPI_OPT_TOE; |
289 | #endif |
290 | /* From the redundant department of redundancies... */ |
291 | ti->__tcpi_retransmits = ti->__tcpi_retrans = |
292 | ti->tcpi_snd_rexmitpack = tp->t_sndrexmitpack; |
293 | |
294 | ti->tcpi_rcv_ooopack = tp->t_rcvoopack; |
295 | ti->tcpi_snd_zerowin = tp->t_sndzerowin; |
296 | } |
297 | |
298 | int |
299 | tcp_ctloutput(int op, struct socket *so, struct sockopt *sopt) |
300 | { |
301 | int error = 0, s; |
302 | struct inpcb *inp; |
303 | #ifdef INET6 |
304 | struct in6pcb *in6p; |
305 | #endif |
306 | struct tcpcb *tp; |
307 | struct tcp_info ti; |
308 | u_int ui; |
309 | int family; /* family of the socket */ |
310 | int level, optname, optval; |
311 | |
312 | level = sopt->sopt_level; |
313 | optname = sopt->sopt_name; |
314 | |
315 | family = so->so_proto->pr_domain->dom_family; |
316 | |
317 | s = splsoftnet(); |
318 | switch (family) { |
319 | #ifdef INET |
320 | case PF_INET: |
321 | inp = sotoinpcb(so); |
322 | #ifdef INET6 |
323 | in6p = NULL; |
324 | #endif |
325 | break; |
326 | #endif |
327 | #ifdef INET6 |
328 | case PF_INET6: |
329 | inp = NULL; |
330 | in6p = sotoin6pcb(so); |
331 | break; |
332 | #endif |
333 | default: |
334 | splx(s); |
335 | panic("%s: af %d" , __func__, family); |
336 | } |
337 | #ifndef INET6 |
338 | if (inp == NULL) |
339 | #else |
340 | if (inp == NULL && in6p == NULL) |
341 | #endif |
342 | { |
343 | splx(s); |
344 | return (ECONNRESET); |
345 | } |
346 | if (level != IPPROTO_TCP) { |
347 | switch (family) { |
348 | #ifdef INET |
349 | case PF_INET: |
350 | error = ip_ctloutput(op, so, sopt); |
351 | break; |
352 | #endif |
353 | #ifdef INET6 |
354 | case PF_INET6: |
355 | error = ip6_ctloutput(op, so, sopt); |
356 | break; |
357 | #endif |
358 | } |
359 | splx(s); |
360 | return (error); |
361 | } |
362 | if (inp) |
363 | tp = intotcpcb(inp); |
364 | #ifdef INET6 |
365 | else if (in6p) |
366 | tp = in6totcpcb(in6p); |
367 | #endif |
368 | else |
369 | tp = NULL; |
370 | |
371 | switch (op) { |
372 | case PRCO_SETOPT: |
373 | switch (optname) { |
374 | #ifdef TCP_SIGNATURE |
375 | case TCP_MD5SIG: |
376 | error = sockopt_getint(sopt, &optval); |
377 | if (error) |
378 | break; |
379 | if (optval > 0) |
380 | tp->t_flags |= TF_SIGNATURE; |
381 | else |
382 | tp->t_flags &= ~TF_SIGNATURE; |
383 | break; |
384 | #endif /* TCP_SIGNATURE */ |
385 | |
386 | case TCP_NODELAY: |
387 | error = sockopt_getint(sopt, &optval); |
388 | if (error) |
389 | break; |
390 | if (optval) |
391 | tp->t_flags |= TF_NODELAY; |
392 | else |
393 | tp->t_flags &= ~TF_NODELAY; |
394 | break; |
395 | |
396 | case TCP_MAXSEG: |
397 | error = sockopt_getint(sopt, &optval); |
398 | if (error) |
399 | break; |
400 | if (optval > 0 && optval <= tp->t_peermss) |
401 | tp->t_peermss = optval; /* limit on send size */ |
402 | else |
403 | error = EINVAL; |
404 | break; |
405 | #ifdef notyet |
406 | case TCP_CONGCTL: |
407 | /* XXX string overflow XXX */ |
408 | error = tcp_congctl_select(tp, sopt->sopt_data); |
409 | break; |
410 | #endif |
411 | |
412 | case TCP_KEEPIDLE: |
413 | error = sockopt_get(sopt, &ui, sizeof(ui)); |
414 | if (error) |
415 | break; |
416 | if (ui > 0) { |
417 | tp->t_keepidle = ui; |
418 | change_keepalive(so, tp); |
419 | } else |
420 | error = EINVAL; |
421 | break; |
422 | |
423 | case TCP_KEEPINTVL: |
424 | error = sockopt_get(sopt, &ui, sizeof(ui)); |
425 | if (error) |
426 | break; |
427 | if (ui > 0) { |
428 | tp->t_keepintvl = ui; |
429 | change_keepalive(so, tp); |
430 | } else |
431 | error = EINVAL; |
432 | break; |
433 | |
434 | case TCP_KEEPCNT: |
435 | error = sockopt_get(sopt, &ui, sizeof(ui)); |
436 | if (error) |
437 | break; |
438 | if (ui > 0) { |
439 | tp->t_keepcnt = ui; |
440 | change_keepalive(so, tp); |
441 | } else |
442 | error = EINVAL; |
443 | break; |
444 | |
445 | case TCP_KEEPINIT: |
446 | error = sockopt_get(sopt, &ui, sizeof(ui)); |
447 | if (error) |
448 | break; |
449 | if (ui > 0) { |
450 | tp->t_keepinit = ui; |
451 | change_keepalive(so, tp); |
452 | } else |
453 | error = EINVAL; |
454 | break; |
455 | |
456 | default: |
457 | error = ENOPROTOOPT; |
458 | break; |
459 | } |
460 | break; |
461 | |
462 | case PRCO_GETOPT: |
463 | switch (optname) { |
464 | #ifdef TCP_SIGNATURE |
465 | case TCP_MD5SIG: |
466 | optval = (tp->t_flags & TF_SIGNATURE) ? 1 : 0; |
467 | error = sockopt_set(sopt, &optval, sizeof(optval)); |
468 | break; |
469 | #endif |
470 | case TCP_NODELAY: |
471 | optval = tp->t_flags & TF_NODELAY; |
472 | error = sockopt_set(sopt, &optval, sizeof(optval)); |
473 | break; |
474 | case TCP_MAXSEG: |
475 | optval = tp->t_peermss; |
476 | error = sockopt_set(sopt, &optval, sizeof(optval)); |
477 | break; |
478 | case TCP_INFO: |
479 | tcp_fill_info(tp, &ti); |
480 | error = sockopt_set(sopt, &ti, sizeof ti); |
481 | break; |
482 | #ifdef notyet |
483 | case TCP_CONGCTL: |
484 | break; |
485 | #endif |
486 | default: |
487 | error = ENOPROTOOPT; |
488 | break; |
489 | } |
490 | break; |
491 | } |
492 | splx(s); |
493 | return (error); |
494 | } |
495 | |
496 | #ifndef TCP_SENDSPACE |
497 | #define TCP_SENDSPACE 1024*32 |
498 | #endif |
499 | int tcp_sendspace = TCP_SENDSPACE; |
500 | #ifndef TCP_RECVSPACE |
501 | #define TCP_RECVSPACE 1024*32 |
502 | #endif |
503 | int tcp_recvspace = TCP_RECVSPACE; |
504 | |
505 | /* |
506 | * tcp_attach: attach TCP protocol to socket, allocating internet protocol |
507 | * control block, TCP control block, buffer space and entering LISTEN state |
508 | * if to accept connections. |
509 | */ |
510 | static int |
511 | tcp_attach(struct socket *so, int proto) |
512 | { |
513 | struct tcpcb *tp; |
514 | struct inpcb *inp; |
515 | #ifdef INET6 |
516 | struct in6pcb *in6p; |
517 | #endif |
518 | int s, error, family; |
519 | |
520 | /* Assign the lock (must happen even if we will error out). */ |
521 | s = splsoftnet(); |
522 | sosetlock(so); |
523 | KASSERT(solocked(so)); |
524 | |
525 | family = so->so_proto->pr_domain->dom_family; |
526 | switch (family) { |
527 | #ifdef INET |
528 | case PF_INET: |
529 | inp = sotoinpcb(so); |
530 | #ifdef INET6 |
531 | in6p = NULL; |
532 | #endif |
533 | break; |
534 | #endif |
535 | #ifdef INET6 |
536 | case PF_INET6: |
537 | inp = NULL; |
538 | in6p = sotoin6pcb(so); |
539 | break; |
540 | #endif |
541 | default: |
542 | error = EAFNOSUPPORT; |
543 | goto out; |
544 | } |
545 | |
546 | KASSERT(inp == NULL); |
547 | #ifdef INET6 |
548 | KASSERT(in6p == NULL); |
549 | #endif |
550 | |
551 | #ifdef MBUFTRACE |
552 | so->so_mowner = &tcp_sock_mowner; |
553 | so->so_rcv.sb_mowner = &tcp_sock_rx_mowner; |
554 | so->so_snd.sb_mowner = &tcp_sock_tx_mowner; |
555 | #endif |
556 | if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { |
557 | error = soreserve(so, tcp_sendspace, tcp_recvspace); |
558 | if (error) |
559 | goto out; |
560 | } |
561 | |
562 | so->so_rcv.sb_flags |= SB_AUTOSIZE; |
563 | so->so_snd.sb_flags |= SB_AUTOSIZE; |
564 | |
565 | switch (family) { |
566 | #ifdef INET |
567 | case PF_INET: |
568 | error = in_pcballoc(so, &tcbtable); |
569 | if (error) |
570 | goto out; |
571 | inp = sotoinpcb(so); |
572 | #ifdef INET6 |
573 | in6p = NULL; |
574 | #endif |
575 | break; |
576 | #endif |
577 | #ifdef INET6 |
578 | case PF_INET6: |
579 | error = in6_pcballoc(so, &tcbtable); |
580 | if (error) |
581 | goto out; |
582 | inp = NULL; |
583 | in6p = sotoin6pcb(so); |
584 | break; |
585 | #endif |
586 | default: |
587 | error = EAFNOSUPPORT; |
588 | goto out; |
589 | } |
590 | if (inp) |
591 | tp = tcp_newtcpcb(family, (void *)inp); |
592 | #ifdef INET6 |
593 | else if (in6p) |
594 | tp = tcp_newtcpcb(family, (void *)in6p); |
595 | #endif |
596 | else |
597 | tp = NULL; |
598 | |
599 | if (tp == NULL) { |
600 | int nofd = so->so_state & SS_NOFDREF; /* XXX */ |
601 | |
602 | so->so_state &= ~SS_NOFDREF; /* don't free the socket yet */ |
603 | #ifdef INET |
604 | if (inp) |
605 | in_pcbdetach(inp); |
606 | #endif |
607 | #ifdef INET6 |
608 | if (in6p) |
609 | in6_pcbdetach(in6p); |
610 | #endif |
611 | so->so_state |= nofd; |
612 | error = ENOBUFS; |
613 | goto out; |
614 | } |
615 | tp->t_state = TCPS_CLOSED; |
616 | if ((so->so_options & SO_LINGER) && so->so_linger == 0) { |
617 | so->so_linger = TCP_LINGERTIME; |
618 | } |
619 | out: |
620 | KASSERT(solocked(so)); |
621 | splx(s); |
622 | return error; |
623 | } |
624 | |
625 | static void |
626 | tcp_detach(struct socket *so) |
627 | { |
628 | struct inpcb *inp = NULL; |
629 | struct in6pcb *in6p = NULL; |
630 | struct tcpcb *tp = NULL; |
631 | int s; |
632 | |
633 | if (tcp_getpcb(so, &inp, &in6p, &tp) != 0) |
634 | return; |
635 | |
636 | s = splsoftnet(); |
637 | (void)tcp_disconnect1(tp); |
638 | splx(s); |
639 | } |
640 | |
641 | static int |
642 | tcp_accept(struct socket *so, struct sockaddr *nam) |
643 | { |
644 | struct inpcb *inp = NULL; |
645 | struct in6pcb *in6p = NULL; |
646 | struct tcpcb *tp = NULL; |
647 | int ostate = 0; |
648 | int error = 0; |
649 | int s; |
650 | |
651 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
652 | return error; |
653 | |
654 | ostate = tcp_debug_capture(tp, PRU_ACCEPT); |
655 | |
656 | /* |
657 | * Accept a connection. Essentially all the work is |
658 | * done at higher levels; just return the address |
659 | * of the peer, storing through addr. |
660 | */ |
661 | s = splsoftnet(); |
662 | #ifdef INET |
663 | if (inp) { |
664 | in_setpeeraddr(inp, (struct sockaddr_in *)nam); |
665 | } |
666 | #endif |
667 | #ifdef INET6 |
668 | if (in6p) { |
669 | in6_setpeeraddr(in6p, (struct sockaddr_in6 *)nam); |
670 | } |
671 | #endif |
672 | tcp_debug_trace(so, tp, ostate, PRU_ACCEPT); |
673 | splx(s); |
674 | |
675 | return 0; |
676 | } |
677 | |
678 | static int |
679 | tcp_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) |
680 | { |
681 | struct inpcb *inp = NULL; |
682 | struct in6pcb *in6p = NULL; |
683 | struct sockaddr_in *sin = (struct sockaddr_in *)nam; |
684 | #ifdef INET6 |
685 | struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; |
686 | #endif /* INET6 */ |
687 | struct tcpcb *tp = NULL; |
688 | int s; |
689 | int error = 0; |
690 | int ostate = 0; |
691 | |
692 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
693 | return error; |
694 | |
695 | ostate = tcp_debug_capture(tp, PRU_BIND); |
696 | |
697 | /* |
698 | * Give the socket an address. |
699 | */ |
700 | s = splsoftnet(); |
701 | switch (so->so_proto->pr_domain->dom_family) { |
702 | #ifdef INET |
703 | case PF_INET: |
704 | error = in_pcbbind(inp, sin, l); |
705 | break; |
706 | #endif |
707 | #ifdef INET6 |
708 | case PF_INET6: |
709 | error = in6_pcbbind(in6p, sin6, l); |
710 | if (!error) { |
711 | /* mapped addr case */ |
712 | if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_laddr)) |
713 | tp->t_family = AF_INET; |
714 | else |
715 | tp->t_family = AF_INET6; |
716 | } |
717 | break; |
718 | #endif |
719 | } |
720 | tcp_debug_trace(so, tp, ostate, PRU_BIND); |
721 | splx(s); |
722 | |
723 | return error; |
724 | } |
725 | |
726 | static int |
727 | tcp_listen(struct socket *so, struct lwp *l) |
728 | { |
729 | struct inpcb *inp = NULL; |
730 | struct in6pcb *in6p = NULL; |
731 | struct tcpcb *tp = NULL; |
732 | int error = 0; |
733 | int ostate = 0; |
734 | int s; |
735 | |
736 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
737 | return error; |
738 | |
739 | ostate = tcp_debug_capture(tp, PRU_LISTEN); |
740 | |
741 | /* |
742 | * Prepare to accept connections. |
743 | */ |
744 | s = splsoftnet(); |
745 | #ifdef INET |
746 | if (inp && inp->inp_lport == 0) { |
747 | error = in_pcbbind(inp, NULL, l); |
748 | if (error) |
749 | goto release; |
750 | } |
751 | #endif |
752 | #ifdef INET6 |
753 | if (in6p && in6p->in6p_lport == 0) { |
754 | error = in6_pcbbind(in6p, NULL, l); |
755 | if (error) |
756 | goto release; |
757 | } |
758 | #endif |
759 | tp->t_state = TCPS_LISTEN; |
760 | |
761 | release: |
762 | tcp_debug_trace(so, tp, ostate, PRU_LISTEN); |
763 | splx(s); |
764 | |
765 | return error; |
766 | } |
767 | |
768 | static int |
769 | tcp_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) |
770 | { |
771 | struct inpcb *inp = NULL; |
772 | struct in6pcb *in6p = NULL; |
773 | struct tcpcb *tp = NULL; |
774 | int s; |
775 | int error = 0; |
776 | int ostate = 0; |
777 | |
778 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
779 | return error; |
780 | |
781 | ostate = tcp_debug_capture(tp, PRU_CONNECT); |
782 | |
783 | /* |
784 | * Initiate connection to peer. |
785 | * Create a template for use in transmissions on this connection. |
786 | * Enter SYN_SENT state, and mark socket as connecting. |
787 | * Start keep-alive timer, and seed output sequence space. |
788 | * Send initial segment on connection. |
789 | */ |
790 | s = splsoftnet(); |
791 | #ifdef INET |
792 | if (inp) { |
793 | if (inp->inp_lport == 0) { |
794 | error = in_pcbbind(inp, NULL, l); |
795 | if (error) |
796 | goto release; |
797 | } |
798 | error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l); |
799 | } |
800 | #endif |
801 | #ifdef INET6 |
802 | if (in6p) { |
803 | if (in6p->in6p_lport == 0) { |
804 | error = in6_pcbbind(in6p, NULL, l); |
805 | if (error) |
806 | goto release; |
807 | } |
808 | error = in6_pcbconnect(in6p, (struct sockaddr_in6 *)nam, l); |
809 | if (!error) { |
810 | /* mapped addr case */ |
811 | if (IN6_IS_ADDR_V4MAPPED(&in6p->in6p_faddr)) |
812 | tp->t_family = AF_INET; |
813 | else |
814 | tp->t_family = AF_INET6; |
815 | } |
816 | } |
817 | #endif |
818 | if (error) |
819 | goto release; |
820 | tp->t_template = tcp_template(tp); |
821 | if (tp->t_template == 0) { |
822 | #ifdef INET |
823 | if (inp) |
824 | in_pcbdisconnect(inp); |
825 | #endif |
826 | #ifdef INET6 |
827 | if (in6p) |
828 | in6_pcbdisconnect(in6p); |
829 | #endif |
830 | error = ENOBUFS; |
831 | goto release; |
832 | } |
833 | /* |
834 | * Compute window scaling to request. |
835 | * XXX: This should be moved to tcp_output(). |
836 | */ |
837 | while (tp->request_r_scale < TCP_MAX_WINSHIFT && |
838 | (TCP_MAXWIN << tp->request_r_scale) < sb_max) |
839 | tp->request_r_scale++; |
840 | soisconnecting(so); |
841 | TCP_STATINC(TCP_STAT_CONNATTEMPT); |
842 | tp->t_state = TCPS_SYN_SENT; |
843 | TCP_TIMER_ARM(tp, TCPT_KEEP, tp->t_keepinit); |
844 | tp->iss = tcp_new_iss(tp, 0); |
845 | tcp_sendseqinit(tp); |
846 | error = tcp_output(tp); |
847 | |
848 | release: |
849 | tcp_debug_trace(so, tp, ostate, PRU_CONNECT); |
850 | splx(s); |
851 | |
852 | return error; |
853 | } |
854 | |
855 | static int |
856 | tcp_connect2(struct socket *so, struct socket *so2) |
857 | { |
858 | struct inpcb *inp = NULL; |
859 | struct in6pcb *in6p = NULL; |
860 | struct tcpcb *tp = NULL; |
861 | int error = 0; |
862 | int ostate = 0; |
863 | |
864 | KASSERT(solocked(so)); |
865 | |
866 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
867 | return error; |
868 | |
869 | ostate = tcp_debug_capture(tp, PRU_CONNECT2); |
870 | |
871 | tcp_debug_trace(so, tp, ostate, PRU_CONNECT2); |
872 | |
873 | return EOPNOTSUPP; |
874 | } |
875 | |
876 | static int |
877 | tcp_disconnect(struct socket *so) |
878 | { |
879 | struct inpcb *inp = NULL; |
880 | struct in6pcb *in6p = NULL; |
881 | struct tcpcb *tp = NULL; |
882 | int error = 0; |
883 | int ostate = 0; |
884 | int s; |
885 | |
886 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
887 | return error; |
888 | |
889 | ostate = tcp_debug_capture(tp, PRU_DISCONNECT); |
890 | |
891 | /* |
892 | * Initiate disconnect from peer. |
893 | * If connection never passed embryonic stage, just drop; |
894 | * else if don't need to let data drain, then can just drop anyways, |
895 | * else have to begin TCP shutdown process: mark socket disconnecting, |
896 | * drain unread data, state switch to reflect user close, and |
897 | * send segment (e.g. FIN) to peer. Socket will be really disconnected |
898 | * when peer sends FIN and acks ours. |
899 | * |
900 | * SHOULD IMPLEMENT LATER PRU_CONNECT VIA REALLOC TCPCB. |
901 | */ |
902 | s = splsoftnet(); |
903 | tp = tcp_disconnect1(tp); |
904 | tcp_debug_trace(so, tp, ostate, PRU_DISCONNECT); |
905 | splx(s); |
906 | |
907 | return error; |
908 | } |
909 | |
910 | static int |
911 | tcp_shutdown(struct socket *so) |
912 | { |
913 | struct inpcb *inp = NULL; |
914 | struct in6pcb *in6p = NULL; |
915 | struct tcpcb *tp = NULL; |
916 | int error = 0; |
917 | int ostate = 0; |
918 | int s; |
919 | |
920 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
921 | return error; |
922 | |
923 | ostate = tcp_debug_capture(tp, PRU_SHUTDOWN); |
924 | /* |
925 | * Mark the connection as being incapable of further output. |
926 | */ |
927 | s = splsoftnet(); |
928 | socantsendmore(so); |
929 | tp = tcp_usrclosed(tp); |
930 | if (tp) |
931 | error = tcp_output(tp); |
932 | tcp_debug_trace(so, tp, ostate, PRU_SHUTDOWN); |
933 | splx(s); |
934 | |
935 | return error; |
936 | } |
937 | |
938 | static int |
939 | tcp_abort(struct socket *so) |
940 | { |
941 | struct inpcb *inp = NULL; |
942 | struct in6pcb *in6p = NULL; |
943 | struct tcpcb *tp = NULL; |
944 | int error = 0; |
945 | int ostate = 0; |
946 | int s; |
947 | |
948 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
949 | return error; |
950 | |
951 | ostate = tcp_debug_capture(tp, PRU_ABORT); |
952 | |
953 | /* |
954 | * Abort the TCP. |
955 | */ |
956 | s = splsoftnet(); |
957 | tp = tcp_drop(tp, ECONNABORTED); |
958 | tcp_debug_trace(so, tp, ostate, PRU_ABORT); |
959 | splx(s); |
960 | |
961 | return error; |
962 | } |
963 | |
964 | static int |
965 | tcp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) |
966 | { |
967 | switch (so->so_proto->pr_domain->dom_family) { |
968 | #ifdef INET |
969 | case PF_INET: |
970 | return in_control(so, cmd, nam, ifp); |
971 | #endif |
972 | #ifdef INET6 |
973 | case PF_INET6: |
974 | return in6_control(so, cmd, nam, ifp); |
975 | #endif |
976 | default: |
977 | return EAFNOSUPPORT; |
978 | } |
979 | } |
980 | |
981 | static int |
982 | tcp_stat(struct socket *so, struct stat *ub) |
983 | { |
984 | KASSERT(solocked(so)); |
985 | |
986 | /* stat: don't bother with a blocksize. */ |
987 | return 0; |
988 | } |
989 | |
990 | static int |
991 | tcp_peeraddr(struct socket *so, struct sockaddr *nam) |
992 | { |
993 | struct inpcb *inp = NULL; |
994 | struct in6pcb *in6p = NULL; |
995 | struct tcpcb *tp = NULL; |
996 | int ostate = 0; |
997 | int error = 0; |
998 | int s; |
999 | |
1000 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
1001 | return error; |
1002 | |
1003 | ostate = tcp_debug_capture(tp, PRU_PEERADDR); |
1004 | |
1005 | s = splsoftnet(); |
1006 | #ifdef INET |
1007 | if (inp) { |
1008 | in_setpeeraddr(inp, (struct sockaddr_in *)nam); |
1009 | } |
1010 | #endif |
1011 | #ifdef INET6 |
1012 | if (in6p) { |
1013 | in6_setpeeraddr(in6p, (struct sockaddr_in6 *)nam); |
1014 | } |
1015 | #endif |
1016 | tcp_debug_trace(so, tp, ostate, PRU_PEERADDR); |
1017 | splx(s); |
1018 | |
1019 | return 0; |
1020 | } |
1021 | |
1022 | static int |
1023 | tcp_sockaddr(struct socket *so, struct sockaddr *nam) |
1024 | { |
1025 | struct inpcb *inp = NULL; |
1026 | struct in6pcb *in6p = NULL; |
1027 | struct tcpcb *tp = NULL; |
1028 | int ostate = 0; |
1029 | int error = 0; |
1030 | int s; |
1031 | |
1032 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
1033 | return error; |
1034 | |
1035 | ostate = tcp_debug_capture(tp, PRU_SOCKADDR); |
1036 | |
1037 | s = splsoftnet(); |
1038 | #ifdef INET |
1039 | if (inp) { |
1040 | in_setsockaddr(inp, (struct sockaddr_in *)nam); |
1041 | } |
1042 | #endif |
1043 | #ifdef INET6 |
1044 | if (in6p) { |
1045 | in6_setsockaddr(in6p, (struct sockaddr_in6 *)nam); |
1046 | } |
1047 | #endif |
1048 | tcp_debug_trace(so, tp, ostate, PRU_SOCKADDR); |
1049 | splx(s); |
1050 | |
1051 | return 0; |
1052 | } |
1053 | |
1054 | static int |
1055 | tcp_rcvd(struct socket *so, int flags, struct lwp *l) |
1056 | { |
1057 | struct inpcb *inp = NULL; |
1058 | struct in6pcb *in6p = NULL; |
1059 | struct tcpcb *tp = NULL; |
1060 | int ostate = 0; |
1061 | int error = 0; |
1062 | int s; |
1063 | |
1064 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
1065 | return error; |
1066 | |
1067 | ostate = tcp_debug_capture(tp, PRU_RCVD); |
1068 | |
1069 | /* |
1070 | * After a receive, possibly send window update to peer. |
1071 | * |
1072 | * soreceive() calls this function when a user receives |
1073 | * ancillary data on a listening socket. We don't call |
1074 | * tcp_output in such a case, since there is no header |
1075 | * template for a listening socket and hence the kernel |
1076 | * will panic. |
1077 | */ |
1078 | s = splsoftnet(); |
1079 | if ((so->so_state & (SS_ISCONNECTED|SS_ISCONNECTING)) != 0) |
1080 | (void) tcp_output(tp); |
1081 | splx(s); |
1082 | |
1083 | tcp_debug_trace(so, tp, ostate, PRU_RCVD); |
1084 | |
1085 | return 0; |
1086 | } |
1087 | |
1088 | static int |
1089 | tcp_recvoob(struct socket *so, struct mbuf *m, int flags) |
1090 | { |
1091 | struct inpcb *inp = NULL; |
1092 | struct in6pcb *in6p = NULL; |
1093 | struct tcpcb *tp = NULL; |
1094 | int ostate = 0; |
1095 | int error = 0; |
1096 | int s; |
1097 | |
1098 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
1099 | return error; |
1100 | |
1101 | ostate = tcp_debug_capture(tp, PRU_RCVOOB); |
1102 | |
1103 | s = splsoftnet(); |
1104 | if ((so->so_oobmark == 0 && |
1105 | (so->so_state & SS_RCVATMARK) == 0) || |
1106 | so->so_options & SO_OOBINLINE || |
1107 | tp->t_oobflags & TCPOOB_HADDATA) { |
1108 | splx(s); |
1109 | return EINVAL; |
1110 | } |
1111 | |
1112 | if ((tp->t_oobflags & TCPOOB_HAVEDATA) == 0) { |
1113 | splx(s); |
1114 | return EWOULDBLOCK; |
1115 | } |
1116 | |
1117 | m->m_len = 1; |
1118 | *mtod(m, char *) = tp->t_iobc; |
1119 | if ((flags & MSG_PEEK) == 0) |
1120 | tp->t_oobflags ^= (TCPOOB_HAVEDATA | TCPOOB_HADDATA); |
1121 | |
1122 | tcp_debug_trace(so, tp, ostate, PRU_RCVOOB); |
1123 | splx(s); |
1124 | |
1125 | return 0; |
1126 | } |
1127 | |
1128 | static int |
1129 | tcp_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, |
1130 | struct mbuf *control, struct lwp *l) |
1131 | { |
1132 | struct inpcb *inp = NULL; |
1133 | struct in6pcb *in6p = NULL; |
1134 | struct tcpcb *tp = NULL; |
1135 | int ostate = 0; |
1136 | int error = 0; |
1137 | int s; |
1138 | |
1139 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
1140 | return error; |
1141 | |
1142 | ostate = tcp_debug_capture(tp, PRU_SEND); |
1143 | |
1144 | /* |
1145 | * Do a send by putting data in output queue and updating urgent |
1146 | * marker if URG set. Possibly send more data. |
1147 | */ |
1148 | s = splsoftnet(); |
1149 | if (control && control->m_len) { |
1150 | m_freem(control); |
1151 | m_freem(m); |
1152 | tcp_debug_trace(so, tp, ostate, PRU_SEND); |
1153 | splx(s); |
1154 | return EINVAL; |
1155 | } |
1156 | |
1157 | sbappendstream(&so->so_snd, m); |
1158 | error = tcp_output(tp); |
1159 | tcp_debug_trace(so, tp, ostate, PRU_SEND); |
1160 | splx(s); |
1161 | |
1162 | return error; |
1163 | } |
1164 | |
1165 | static int |
1166 | tcp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) |
1167 | { |
1168 | struct inpcb *inp = NULL; |
1169 | struct in6pcb *in6p = NULL; |
1170 | struct tcpcb *tp = NULL; |
1171 | int ostate = 0; |
1172 | int error = 0; |
1173 | int s; |
1174 | |
1175 | if ((error = tcp_getpcb(so, &inp, &in6p, &tp)) != 0) |
1176 | return error; |
1177 | |
1178 | ostate = tcp_debug_capture(tp, PRU_SENDOOB); |
1179 | |
1180 | s = splsoftnet(); |
1181 | if (sbspace(&so->so_snd) < -512) { |
1182 | m_freem(m); |
1183 | splx(s); |
1184 | return ENOBUFS; |
1185 | } |
1186 | /* |
1187 | * According to RFC961 (Assigned Protocols), |
1188 | * the urgent pointer points to the last octet |
1189 | * of urgent data. We continue, however, |
1190 | * to consider it to indicate the first octet |
1191 | * of data past the urgent section. |
1192 | * Otherwise, snd_up should be one lower. |
1193 | */ |
1194 | sbappendstream(&so->so_snd, m); |
1195 | tp->snd_up = tp->snd_una + so->so_snd.sb_cc; |
1196 | tp->t_force = 1; |
1197 | error = tcp_output(tp); |
1198 | tp->t_force = 0; |
1199 | tcp_debug_trace(so, tp, ostate, PRU_SENDOOB); |
1200 | splx(s); |
1201 | |
1202 | return error; |
1203 | } |
1204 | |
1205 | static int |
1206 | tcp_purgeif(struct socket *so, struct ifnet *ifp) |
1207 | { |
1208 | int s; |
1209 | int error = 0; |
1210 | |
1211 | s = splsoftnet(); |
1212 | |
1213 | #ifndef NET_MPSAFE |
1214 | mutex_enter(softnet_lock); |
1215 | #endif |
1216 | switch (so->so_proto->pr_domain->dom_family) { |
1217 | #ifdef INET |
1218 | case PF_INET: |
1219 | in_pcbpurgeif0(&tcbtable, ifp); |
1220 | in_purgeif(ifp); |
1221 | in_pcbpurgeif(&tcbtable, ifp); |
1222 | break; |
1223 | #endif |
1224 | #ifdef INET6 |
1225 | case PF_INET6: |
1226 | in6_pcbpurgeif0(&tcbtable, ifp); |
1227 | in6_purgeif(ifp); |
1228 | in6_pcbpurgeif(&tcbtable, ifp); |
1229 | break; |
1230 | #endif |
1231 | default: |
1232 | error = EAFNOSUPPORT; |
1233 | break; |
1234 | } |
1235 | #ifndef NET_MPSAFE |
1236 | mutex_exit(softnet_lock); |
1237 | #endif |
1238 | splx(s); |
1239 | |
1240 | return error; |
1241 | } |
1242 | |
1243 | /* |
1244 | * Initiate (or continue) disconnect. |
1245 | * If embryonic state, just send reset (once). |
1246 | * If in ``let data drain'' option and linger null, just drop. |
1247 | * Otherwise (hard), mark socket disconnecting and drop |
1248 | * current input data; switch states based on user close, and |
1249 | * send segment to peer (with FIN). |
1250 | */ |
1251 | struct tcpcb * |
1252 | tcp_disconnect1(struct tcpcb *tp) |
1253 | { |
1254 | struct socket *so; |
1255 | |
1256 | if (tp->t_inpcb) |
1257 | so = tp->t_inpcb->inp_socket; |
1258 | #ifdef INET6 |
1259 | else if (tp->t_in6pcb) |
1260 | so = tp->t_in6pcb->in6p_socket; |
1261 | #endif |
1262 | else |
1263 | so = NULL; |
1264 | |
1265 | if (TCPS_HAVEESTABLISHED(tp->t_state) == 0) |
1266 | tp = tcp_close(tp); |
1267 | else if ((so->so_options & SO_LINGER) && so->so_linger == 0) |
1268 | tp = tcp_drop(tp, 0); |
1269 | else { |
1270 | soisdisconnecting(so); |
1271 | sbflush(&so->so_rcv); |
1272 | tp = tcp_usrclosed(tp); |
1273 | if (tp) |
1274 | (void) tcp_output(tp); |
1275 | } |
1276 | return (tp); |
1277 | } |
1278 | |
1279 | /* |
1280 | * User issued close, and wish to trail through shutdown states: |
1281 | * if never received SYN, just forget it. If got a SYN from peer, |
1282 | * but haven't sent FIN, then go to FIN_WAIT_1 state to send peer a FIN. |
1283 | * If already got a FIN from peer, then almost done; go to LAST_ACK |
1284 | * state. In all other cases, have already sent FIN to peer (e.g. |
1285 | * after PRU_SHUTDOWN), and just have to play tedious game waiting |
1286 | * for peer to send FIN or not respond to keep-alives, etc. |
1287 | * We can let the user exit from the close as soon as the FIN is acked. |
1288 | */ |
1289 | struct tcpcb * |
1290 | tcp_usrclosed(struct tcpcb *tp) |
1291 | { |
1292 | |
1293 | switch (tp->t_state) { |
1294 | |
1295 | case TCPS_CLOSED: |
1296 | case TCPS_LISTEN: |
1297 | case TCPS_SYN_SENT: |
1298 | tp->t_state = TCPS_CLOSED; |
1299 | tp = tcp_close(tp); |
1300 | break; |
1301 | |
1302 | case TCPS_SYN_RECEIVED: |
1303 | case TCPS_ESTABLISHED: |
1304 | tp->t_state = TCPS_FIN_WAIT_1; |
1305 | break; |
1306 | |
1307 | case TCPS_CLOSE_WAIT: |
1308 | tp->t_state = TCPS_LAST_ACK; |
1309 | break; |
1310 | } |
1311 | if (tp && tp->t_state >= TCPS_FIN_WAIT_2) { |
1312 | struct socket *so; |
1313 | if (tp->t_inpcb) |
1314 | so = tp->t_inpcb->inp_socket; |
1315 | #ifdef INET6 |
1316 | else if (tp->t_in6pcb) |
1317 | so = tp->t_in6pcb->in6p_socket; |
1318 | #endif |
1319 | else |
1320 | so = NULL; |
1321 | if (so) |
1322 | soisdisconnected(so); |
1323 | /* |
1324 | * If we are in FIN_WAIT_2, we arrived here because the |
1325 | * application did a shutdown of the send side. Like the |
1326 | * case of a transition from FIN_WAIT_1 to FIN_WAIT_2 after |
1327 | * a full close, we start a timer to make sure sockets are |
1328 | * not left in FIN_WAIT_2 forever. |
1329 | */ |
1330 | if ((tp->t_state == TCPS_FIN_WAIT_2) && (tp->t_maxidle > 0)) |
1331 | TCP_TIMER_ARM(tp, TCPT_2MSL, tp->t_maxidle); |
1332 | else if (tp->t_state == TCPS_TIME_WAIT |
1333 | && ((tp->t_inpcb |
1334 | && (tcp4_vtw_enable & 1) |
1335 | && vtw_add(AF_INET, tp)) |
1336 | || |
1337 | (tp->t_in6pcb |
1338 | && (tcp6_vtw_enable & 1) |
1339 | && vtw_add(AF_INET6, tp)))) { |
1340 | tp = 0; |
1341 | } |
1342 | } |
1343 | return (tp); |
1344 | } |
1345 | |
1346 | /* |
1347 | * sysctl helper routine for net.inet.ip.mssdflt. it can't be less |
1348 | * than 32. |
1349 | */ |
1350 | static int |
1351 | sysctl_net_inet_tcp_mssdflt(SYSCTLFN_ARGS) |
1352 | { |
1353 | int error, mssdflt; |
1354 | struct sysctlnode node; |
1355 | |
1356 | mssdflt = tcp_mssdflt; |
1357 | node = *rnode; |
1358 | node.sysctl_data = &mssdflt; |
1359 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
1360 | if (error || newp == NULL) |
1361 | return (error); |
1362 | |
1363 | if (mssdflt < 32) |
1364 | return (EINVAL); |
1365 | tcp_mssdflt = mssdflt; |
1366 | |
1367 | mutex_enter(softnet_lock); |
1368 | tcp_tcpcb_template(); |
1369 | mutex_exit(softnet_lock); |
1370 | |
1371 | return (0); |
1372 | } |
1373 | |
1374 | /* |
1375 | * sysctl helper for TCP CB template update |
1376 | */ |
1377 | static int |
1378 | sysctl_update_tcpcb_template(SYSCTLFN_ARGS) |
1379 | { |
1380 | int t, error; |
1381 | struct sysctlnode node; |
1382 | |
1383 | /* follow procedures in sysctl(9) manpage */ |
1384 | t = *(int *)rnode->sysctl_data; |
1385 | node = *rnode; |
1386 | node.sysctl_data = &t; |
1387 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
1388 | if (error || newp == NULL) |
1389 | return error; |
1390 | |
1391 | if (t < 0) |
1392 | return EINVAL; |
1393 | |
1394 | *(int *)rnode->sysctl_data = t; |
1395 | |
1396 | mutex_enter(softnet_lock); |
1397 | tcp_tcpcb_template(); |
1398 | mutex_exit(softnet_lock); |
1399 | |
1400 | return 0; |
1401 | } |
1402 | |
1403 | /* |
1404 | * sysctl helper routine for setting port related values under |
1405 | * net.inet.ip and net.inet6.ip6. does basic range checking and does |
1406 | * additional checks for each type. this code has placed in |
1407 | * tcp_input.c since INET and INET6 both use the same tcp code. |
1408 | * |
1409 | * this helper is not static so that both inet and inet6 can use it. |
1410 | */ |
1411 | int |
1412 | sysctl_net_inet_ip_ports(SYSCTLFN_ARGS) |
1413 | { |
1414 | int error, tmp; |
1415 | int apmin, apmax; |
1416 | #ifndef IPNOPRIVPORTS |
1417 | int lpmin, lpmax; |
1418 | #endif /* IPNOPRIVPORTS */ |
1419 | struct sysctlnode node; |
1420 | |
1421 | if (namelen != 0) |
1422 | return (EINVAL); |
1423 | |
1424 | switch (name[-3]) { |
1425 | #ifdef INET |
1426 | case PF_INET: |
1427 | apmin = anonportmin; |
1428 | apmax = anonportmax; |
1429 | #ifndef IPNOPRIVPORTS |
1430 | lpmin = lowportmin; |
1431 | lpmax = lowportmax; |
1432 | #endif /* IPNOPRIVPORTS */ |
1433 | break; |
1434 | #endif /* INET */ |
1435 | #ifdef INET6 |
1436 | case PF_INET6: |
1437 | apmin = ip6_anonportmin; |
1438 | apmax = ip6_anonportmax; |
1439 | #ifndef IPNOPRIVPORTS |
1440 | lpmin = ip6_lowportmin; |
1441 | lpmax = ip6_lowportmax; |
1442 | #endif /* IPNOPRIVPORTS */ |
1443 | break; |
1444 | #endif /* INET6 */ |
1445 | default: |
1446 | return (EINVAL); |
1447 | } |
1448 | |
1449 | /* |
1450 | * insert temporary copy into node, perform lookup on |
1451 | * temporary, then restore pointer |
1452 | */ |
1453 | node = *rnode; |
1454 | tmp = *(int*)rnode->sysctl_data; |
1455 | node.sysctl_data = &tmp; |
1456 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
1457 | if (error || newp == NULL) |
1458 | return (error); |
1459 | |
1460 | /* |
1461 | * simple port range check |
1462 | */ |
1463 | if (tmp < 0 || tmp > 65535) |
1464 | return (EINVAL); |
1465 | |
1466 | /* |
1467 | * per-node range checks |
1468 | */ |
1469 | switch (rnode->sysctl_num) { |
1470 | case IPCTL_ANONPORTMIN: |
1471 | case IPV6CTL_ANONPORTMIN: |
1472 | if (tmp >= apmax) |
1473 | return (EINVAL); |
1474 | #ifndef IPNOPRIVPORTS |
1475 | if (tmp < IPPORT_RESERVED) |
1476 | return (EINVAL); |
1477 | #endif /* IPNOPRIVPORTS */ |
1478 | break; |
1479 | |
1480 | case IPCTL_ANONPORTMAX: |
1481 | case IPV6CTL_ANONPORTMAX: |
1482 | if (apmin >= tmp) |
1483 | return (EINVAL); |
1484 | #ifndef IPNOPRIVPORTS |
1485 | if (tmp < IPPORT_RESERVED) |
1486 | return (EINVAL); |
1487 | #endif /* IPNOPRIVPORTS */ |
1488 | break; |
1489 | |
1490 | #ifndef IPNOPRIVPORTS |
1491 | case IPCTL_LOWPORTMIN: |
1492 | case IPV6CTL_LOWPORTMIN: |
1493 | if (tmp >= lpmax || |
1494 | tmp > IPPORT_RESERVEDMAX || |
1495 | tmp < IPPORT_RESERVEDMIN) |
1496 | return (EINVAL); |
1497 | break; |
1498 | |
1499 | case IPCTL_LOWPORTMAX: |
1500 | case IPV6CTL_LOWPORTMAX: |
1501 | if (lpmin >= tmp || |
1502 | tmp > IPPORT_RESERVEDMAX || |
1503 | tmp < IPPORT_RESERVEDMIN) |
1504 | return (EINVAL); |
1505 | break; |
1506 | #endif /* IPNOPRIVPORTS */ |
1507 | |
1508 | default: |
1509 | return (EINVAL); |
1510 | } |
1511 | |
1512 | *(int*)rnode->sysctl_data = tmp; |
1513 | |
1514 | return (0); |
1515 | } |
1516 | |
1517 | static inline int |
1518 | copyout_uid(struct socket *sockp, void *oldp, size_t *oldlenp) |
1519 | { |
1520 | if (oldp) { |
1521 | size_t sz; |
1522 | uid_t uid; |
1523 | int error; |
1524 | |
1525 | if (sockp->so_cred == NULL) |
1526 | return EPERM; |
1527 | |
1528 | uid = kauth_cred_geteuid(sockp->so_cred); |
1529 | sz = MIN(sizeof(uid), *oldlenp); |
1530 | if ((error = copyout(&uid, oldp, sz)) != 0) |
1531 | return error; |
1532 | } |
1533 | *oldlenp = sizeof(uid_t); |
1534 | return 0; |
1535 | } |
1536 | |
1537 | static inline int |
1538 | inet4_ident_core(struct in_addr raddr, u_int rport, |
1539 | struct in_addr laddr, u_int lport, |
1540 | void *oldp, size_t *oldlenp, |
1541 | struct lwp *l, int dodrop) |
1542 | { |
1543 | struct inpcb *inp; |
1544 | struct socket *sockp; |
1545 | |
1546 | inp = in_pcblookup_connect(&tcbtable, raddr, rport, laddr, lport, 0); |
1547 | |
1548 | if (inp == NULL || (sockp = inp->inp_socket) == NULL) |
1549 | return ESRCH; |
1550 | |
1551 | if (dodrop) { |
1552 | struct tcpcb *tp; |
1553 | int error; |
1554 | |
1555 | if (inp == NULL || (tp = intotcpcb(inp)) == NULL || |
1556 | (inp->inp_socket->so_options & SO_ACCEPTCONN) != 0) |
1557 | return ESRCH; |
1558 | |
1559 | error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, |
1560 | KAUTH_REQ_NETWORK_SOCKET_DROP, inp->inp_socket, tp, NULL); |
1561 | if (error) |
1562 | return (error); |
1563 | |
1564 | (void)tcp_drop(tp, ECONNABORTED); |
1565 | return 0; |
1566 | } |
1567 | else |
1568 | return copyout_uid(sockp, oldp, oldlenp); |
1569 | } |
1570 | |
1571 | #ifdef INET6 |
1572 | static inline int |
1573 | inet6_ident_core(struct in6_addr *raddr, u_int rport, |
1574 | struct in6_addr *laddr, u_int lport, |
1575 | void *oldp, size_t *oldlenp, |
1576 | struct lwp *l, int dodrop) |
1577 | { |
1578 | struct in6pcb *in6p; |
1579 | struct socket *sockp; |
1580 | |
1581 | in6p = in6_pcblookup_connect(&tcbtable, raddr, rport, laddr, lport, 0, 0); |
1582 | |
1583 | if (in6p == NULL || (sockp = in6p->in6p_socket) == NULL) |
1584 | return ESRCH; |
1585 | |
1586 | if (dodrop) { |
1587 | struct tcpcb *tp; |
1588 | int error; |
1589 | |
1590 | if (in6p == NULL || (tp = in6totcpcb(in6p)) == NULL || |
1591 | (in6p->in6p_socket->so_options & SO_ACCEPTCONN) != 0) |
1592 | return ESRCH; |
1593 | |
1594 | error = kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, |
1595 | KAUTH_REQ_NETWORK_SOCKET_DROP, in6p->in6p_socket, tp, NULL); |
1596 | if (error) |
1597 | return (error); |
1598 | |
1599 | (void)tcp_drop(tp, ECONNABORTED); |
1600 | return 0; |
1601 | } |
1602 | else |
1603 | return copyout_uid(sockp, oldp, oldlenp); |
1604 | } |
1605 | #endif |
1606 | |
1607 | /* |
1608 | * sysctl helper routine for the net.inet.tcp.drop and |
1609 | * net.inet6.tcp6.drop nodes. |
1610 | */ |
1611 | #define sysctl_net_inet_tcp_drop sysctl_net_inet_tcp_ident |
1612 | |
1613 | /* |
1614 | * sysctl helper routine for the net.inet.tcp.ident and |
1615 | * net.inet6.tcp6.ident nodes. contains backwards compat code for the |
1616 | * old way of looking up the ident information for ipv4 which involves |
1617 | * stuffing the port/addr pairs into the mib lookup. |
1618 | */ |
1619 | static int |
1620 | sysctl_net_inet_tcp_ident(SYSCTLFN_ARGS) |
1621 | { |
1622 | #ifdef INET |
1623 | struct sockaddr_in *si4[2]; |
1624 | #endif /* INET */ |
1625 | #ifdef INET6 |
1626 | struct sockaddr_in6 *si6[2]; |
1627 | #endif /* INET6 */ |
1628 | struct sockaddr_storage sa[2]; |
1629 | int error, pf, dodrop; |
1630 | |
1631 | dodrop = name[-1] == TCPCTL_DROP; |
1632 | if (dodrop) { |
1633 | if (oldp != NULL || *oldlenp != 0) |
1634 | return EINVAL; |
1635 | if (newp == NULL) |
1636 | return EPERM; |
1637 | if (newlen < sizeof(sa)) |
1638 | return ENOMEM; |
1639 | } |
1640 | if (namelen != 4 && namelen != 0) |
1641 | return EINVAL; |
1642 | if (name[-2] != IPPROTO_TCP) |
1643 | return EINVAL; |
1644 | pf = name[-3]; |
1645 | |
1646 | /* old style lookup, ipv4 only */ |
1647 | if (namelen == 4) { |
1648 | #ifdef INET |
1649 | struct in_addr laddr, raddr; |
1650 | u_int lport, rport; |
1651 | |
1652 | if (pf != PF_INET) |
1653 | return EPROTONOSUPPORT; |
1654 | raddr.s_addr = (uint32_t)name[0]; |
1655 | rport = (u_int)name[1]; |
1656 | laddr.s_addr = (uint32_t)name[2]; |
1657 | lport = (u_int)name[3]; |
1658 | |
1659 | mutex_enter(softnet_lock); |
1660 | error = inet4_ident_core(raddr, rport, laddr, lport, |
1661 | oldp, oldlenp, l, dodrop); |
1662 | mutex_exit(softnet_lock); |
1663 | return error; |
1664 | #else /* INET */ |
1665 | return EINVAL; |
1666 | #endif /* INET */ |
1667 | } |
1668 | |
1669 | if (newp == NULL || newlen != sizeof(sa)) |
1670 | return EINVAL; |
1671 | error = copyin(newp, &sa, newlen); |
1672 | if (error) |
1673 | return error; |
1674 | |
1675 | /* |
1676 | * requested families must match |
1677 | */ |
1678 | if (pf != sa[0].ss_family || sa[0].ss_family != sa[1].ss_family) |
1679 | return EINVAL; |
1680 | |
1681 | switch (pf) { |
1682 | #ifdef INET6 |
1683 | case PF_INET6: |
1684 | si6[0] = (struct sockaddr_in6*)&sa[0]; |
1685 | si6[1] = (struct sockaddr_in6*)&sa[1]; |
1686 | if (si6[0]->sin6_len != sizeof(*si6[0]) || |
1687 | si6[1]->sin6_len != sizeof(*si6[1])) |
1688 | return EINVAL; |
1689 | |
1690 | if (!IN6_IS_ADDR_V4MAPPED(&si6[0]->sin6_addr) && |
1691 | !IN6_IS_ADDR_V4MAPPED(&si6[1]->sin6_addr)) { |
1692 | error = sa6_embedscope(si6[0], ip6_use_defzone); |
1693 | if (error) |
1694 | return error; |
1695 | error = sa6_embedscope(si6[1], ip6_use_defzone); |
1696 | if (error) |
1697 | return error; |
1698 | |
1699 | mutex_enter(softnet_lock); |
1700 | error = inet6_ident_core(&si6[0]->sin6_addr, |
1701 | si6[0]->sin6_port, &si6[1]->sin6_addr, |
1702 | si6[1]->sin6_port, oldp, oldlenp, l, dodrop); |
1703 | mutex_exit(softnet_lock); |
1704 | return error; |
1705 | } |
1706 | |
1707 | if (IN6_IS_ADDR_V4MAPPED(&si6[0]->sin6_addr) != |
1708 | IN6_IS_ADDR_V4MAPPED(&si6[1]->sin6_addr)) |
1709 | return EINVAL; |
1710 | |
1711 | in6_sin6_2_sin_in_sock((struct sockaddr *)&sa[0]); |
1712 | in6_sin6_2_sin_in_sock((struct sockaddr *)&sa[1]); |
1713 | /*FALLTHROUGH*/ |
1714 | #endif /* INET6 */ |
1715 | #ifdef INET |
1716 | case PF_INET: |
1717 | si4[0] = (struct sockaddr_in*)&sa[0]; |
1718 | si4[1] = (struct sockaddr_in*)&sa[1]; |
1719 | if (si4[0]->sin_len != sizeof(*si4[0]) || |
1720 | si4[0]->sin_len != sizeof(*si4[1])) |
1721 | return EINVAL; |
1722 | |
1723 | mutex_enter(softnet_lock); |
1724 | error = inet4_ident_core(si4[0]->sin_addr, si4[0]->sin_port, |
1725 | si4[1]->sin_addr, si4[1]->sin_port, |
1726 | oldp, oldlenp, l, dodrop); |
1727 | mutex_exit(softnet_lock); |
1728 | return error; |
1729 | #endif /* INET */ |
1730 | default: |
1731 | return EPROTONOSUPPORT; |
1732 | } |
1733 | } |
1734 | |
1735 | /* |
1736 | * sysctl helper for the inet and inet6 pcblists. handles tcp/udp and |
1737 | * inet/inet6, as well as raw pcbs for each. specifically not |
1738 | * declared static so that raw sockets and udp/udp6 can use it as |
1739 | * well. |
1740 | */ |
1741 | int |
1742 | sysctl_inpcblist(SYSCTLFN_ARGS) |
1743 | { |
1744 | #ifdef INET |
1745 | struct sockaddr_in *in; |
1746 | const struct inpcb *inp; |
1747 | #endif |
1748 | #ifdef INET6 |
1749 | struct sockaddr_in6 *in6; |
1750 | const struct in6pcb *in6p; |
1751 | #endif |
1752 | struct inpcbtable *pcbtbl = __UNCONST(rnode->sysctl_data); |
1753 | const struct inpcb_hdr *inph; |
1754 | struct tcpcb *tp; |
1755 | struct kinfo_pcb pcb; |
1756 | char *dp; |
1757 | size_t len, needed, elem_size, out_size; |
1758 | int error, elem_count, pf, proto, pf2; |
1759 | |
1760 | if (namelen != 4) |
1761 | return (EINVAL); |
1762 | |
1763 | if (oldp != NULL) { |
1764 | len = *oldlenp; |
1765 | elem_size = name[2]; |
1766 | elem_count = name[3]; |
1767 | if (elem_size != sizeof(pcb)) |
1768 | return EINVAL; |
1769 | } else { |
1770 | len = 0; |
1771 | elem_count = INT_MAX; |
1772 | elem_size = sizeof(pcb); |
1773 | } |
1774 | error = 0; |
1775 | dp = oldp; |
1776 | out_size = elem_size; |
1777 | needed = 0; |
1778 | |
1779 | if (namelen == 1 && name[0] == CTL_QUERY) |
1780 | return (sysctl_query(SYSCTLFN_CALL(rnode))); |
1781 | |
1782 | if (name - oname != 4) |
1783 | return (EINVAL); |
1784 | |
1785 | pf = oname[1]; |
1786 | proto = oname[2]; |
1787 | pf2 = (oldp != NULL) ? pf : 0; |
1788 | |
1789 | mutex_enter(softnet_lock); |
1790 | |
1791 | TAILQ_FOREACH(inph, &pcbtbl->inpt_queue, inph_queue) { |
1792 | #ifdef INET |
1793 | inp = (const struct inpcb *)inph; |
1794 | #endif |
1795 | #ifdef INET6 |
1796 | in6p = (const struct in6pcb *)inph; |
1797 | #endif |
1798 | |
1799 | if (inph->inph_af != pf) |
1800 | continue; |
1801 | |
1802 | if (kauth_authorize_network(l->l_cred, KAUTH_NETWORK_SOCKET, |
1803 | KAUTH_REQ_NETWORK_SOCKET_CANSEE, inph->inph_socket, NULL, |
1804 | NULL) != 0) |
1805 | continue; |
1806 | |
1807 | memset(&pcb, 0, sizeof(pcb)); |
1808 | |
1809 | pcb.ki_family = pf; |
1810 | pcb.ki_type = proto; |
1811 | |
1812 | switch (pf2) { |
1813 | case 0: |
1814 | /* just probing for size */ |
1815 | break; |
1816 | #ifdef INET |
1817 | case PF_INET: |
1818 | pcb.ki_family = inp->inp_socket->so_proto-> |
1819 | pr_domain->dom_family; |
1820 | pcb.ki_type = inp->inp_socket->so_proto-> |
1821 | pr_type; |
1822 | pcb.ki_protocol = inp->inp_socket->so_proto-> |
1823 | pr_protocol; |
1824 | pcb.ki_pflags = inp->inp_flags; |
1825 | |
1826 | pcb.ki_sostate = inp->inp_socket->so_state; |
1827 | pcb.ki_prstate = inp->inp_state; |
1828 | if (proto == IPPROTO_TCP) { |
1829 | tp = intotcpcb(inp); |
1830 | pcb.ki_tstate = tp->t_state; |
1831 | pcb.ki_tflags = tp->t_flags; |
1832 | } |
1833 | |
1834 | pcb.ki_pcbaddr = PTRTOUINT64(inp); |
1835 | pcb.ki_ppcbaddr = PTRTOUINT64(inp->inp_ppcb); |
1836 | pcb.ki_sockaddr = PTRTOUINT64(inp->inp_socket); |
1837 | |
1838 | pcb.ki_rcvq = inp->inp_socket->so_rcv.sb_cc; |
1839 | pcb.ki_sndq = inp->inp_socket->so_snd.sb_cc; |
1840 | |
1841 | in = satosin(&pcb.ki_src); |
1842 | in->sin_len = sizeof(*in); |
1843 | in->sin_family = pf; |
1844 | in->sin_port = inp->inp_lport; |
1845 | in->sin_addr = inp->inp_laddr; |
1846 | if (pcb.ki_prstate >= INP_CONNECTED) { |
1847 | in = satosin(&pcb.ki_dst); |
1848 | in->sin_len = sizeof(*in); |
1849 | in->sin_family = pf; |
1850 | in->sin_port = inp->inp_fport; |
1851 | in->sin_addr = inp->inp_faddr; |
1852 | } |
1853 | break; |
1854 | #endif |
1855 | #ifdef INET6 |
1856 | case PF_INET6: |
1857 | pcb.ki_family = in6p->in6p_socket->so_proto-> |
1858 | pr_domain->dom_family; |
1859 | pcb.ki_type = in6p->in6p_socket->so_proto->pr_type; |
1860 | pcb.ki_protocol = in6p->in6p_socket->so_proto-> |
1861 | pr_protocol; |
1862 | pcb.ki_pflags = in6p->in6p_flags; |
1863 | |
1864 | pcb.ki_sostate = in6p->in6p_socket->so_state; |
1865 | pcb.ki_prstate = in6p->in6p_state; |
1866 | if (proto == IPPROTO_TCP) { |
1867 | tp = in6totcpcb(in6p); |
1868 | pcb.ki_tstate = tp->t_state; |
1869 | pcb.ki_tflags = tp->t_flags; |
1870 | } |
1871 | |
1872 | pcb.ki_pcbaddr = PTRTOUINT64(in6p); |
1873 | pcb.ki_ppcbaddr = PTRTOUINT64(in6p->in6p_ppcb); |
1874 | pcb.ki_sockaddr = PTRTOUINT64(in6p->in6p_socket); |
1875 | |
1876 | pcb.ki_rcvq = in6p->in6p_socket->so_rcv.sb_cc; |
1877 | pcb.ki_sndq = in6p->in6p_socket->so_snd.sb_cc; |
1878 | |
1879 | in6 = satosin6(&pcb.ki_src); |
1880 | in6->sin6_len = sizeof(*in6); |
1881 | in6->sin6_family = pf; |
1882 | in6->sin6_port = in6p->in6p_lport; |
1883 | in6->sin6_flowinfo = in6p->in6p_flowinfo; |
1884 | in6->sin6_addr = in6p->in6p_laddr; |
1885 | in6->sin6_scope_id = 0; /* XXX? */ |
1886 | |
1887 | if (pcb.ki_prstate >= IN6P_CONNECTED) { |
1888 | in6 = satosin6(&pcb.ki_dst); |
1889 | in6->sin6_len = sizeof(*in6); |
1890 | in6->sin6_family = pf; |
1891 | in6->sin6_port = in6p->in6p_fport; |
1892 | in6->sin6_flowinfo = in6p->in6p_flowinfo; |
1893 | in6->sin6_addr = in6p->in6p_faddr; |
1894 | in6->sin6_scope_id = 0; /* XXX? */ |
1895 | } |
1896 | break; |
1897 | #endif |
1898 | } |
1899 | |
1900 | if (len >= elem_size && elem_count > 0) { |
1901 | error = copyout(&pcb, dp, out_size); |
1902 | if (error) { |
1903 | mutex_exit(softnet_lock); |
1904 | return (error); |
1905 | } |
1906 | dp += elem_size; |
1907 | len -= elem_size; |
1908 | } |
1909 | needed += elem_size; |
1910 | if (elem_count > 0 && elem_count != INT_MAX) |
1911 | elem_count--; |
1912 | } |
1913 | |
1914 | *oldlenp = needed; |
1915 | if (oldp == NULL) |
1916 | *oldlenp += PCB_SLOP * sizeof(struct kinfo_pcb); |
1917 | |
1918 | mutex_exit(softnet_lock); |
1919 | |
1920 | return (error); |
1921 | } |
1922 | |
1923 | static int |
1924 | sysctl_tcp_congctl(SYSCTLFN_ARGS) |
1925 | { |
1926 | struct sysctlnode node; |
1927 | int error; |
1928 | char newname[TCPCC_MAXLEN]; |
1929 | |
1930 | strlcpy(newname, tcp_congctl_global_name, sizeof(newname) - 1); |
1931 | |
1932 | node = *rnode; |
1933 | node.sysctl_data = newname; |
1934 | node.sysctl_size = sizeof(newname); |
1935 | |
1936 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
1937 | |
1938 | if (error || |
1939 | newp == NULL || |
1940 | strncmp(newname, tcp_congctl_global_name, sizeof(newname)) == 0) |
1941 | return error; |
1942 | |
1943 | mutex_enter(softnet_lock); |
1944 | error = tcp_congctl_select(NULL, newname); |
1945 | mutex_exit(softnet_lock); |
1946 | |
1947 | return error; |
1948 | } |
1949 | |
1950 | static int |
1951 | sysctl_tcp_init_win(SYSCTLFN_ARGS) |
1952 | { |
1953 | int error; |
1954 | u_int iw; |
1955 | struct sysctlnode node; |
1956 | |
1957 | iw = *(u_int *)rnode->sysctl_data; |
1958 | node = *rnode; |
1959 | node.sysctl_data = &iw; |
1960 | node.sysctl_size = sizeof(iw); |
1961 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
1962 | if (error || newp == NULL) |
1963 | return error; |
1964 | |
1965 | if (iw >= __arraycount(tcp_init_win_max)) |
1966 | return EINVAL; |
1967 | *(u_int *)rnode->sysctl_data = iw; |
1968 | return 0; |
1969 | } |
1970 | |
1971 | static int |
1972 | sysctl_tcp_keep(SYSCTLFN_ARGS) |
1973 | { |
1974 | int error; |
1975 | u_int tmp; |
1976 | struct sysctlnode node; |
1977 | |
1978 | node = *rnode; |
1979 | tmp = *(u_int *)rnode->sysctl_data; |
1980 | node.sysctl_data = &tmp; |
1981 | |
1982 | error = sysctl_lookup(SYSCTLFN_CALL(&node)); |
1983 | if (error || newp == NULL) |
1984 | return error; |
1985 | |
1986 | mutex_enter(softnet_lock); |
1987 | |
1988 | *(u_int *)rnode->sysctl_data = tmp; |
1989 | tcp_tcpcb_template(); /* update the template */ |
1990 | |
1991 | mutex_exit(softnet_lock); |
1992 | return 0; |
1993 | } |
1994 | |
1995 | static int |
1996 | sysctl_net_inet_tcp_stats(SYSCTLFN_ARGS) |
1997 | { |
1998 | |
1999 | return (NETSTAT_SYSCTL(tcpstat_percpu, TCP_NSTATS)); |
2000 | } |
2001 | |
2002 | /* |
2003 | * this (second stage) setup routine is a replacement for tcp_sysctl() |
2004 | * (which is currently used for ipv4 and ipv6) |
2005 | */ |
2006 | static void |
2007 | sysctl_net_inet_tcp_setup2(struct sysctllog **clog, int pf, const char *pfname, |
2008 | const char *tcpname) |
2009 | { |
2010 | const struct sysctlnode *sack_node; |
2011 | const struct sysctlnode *abc_node; |
2012 | const struct sysctlnode *ecn_node; |
2013 | const struct sysctlnode *congctl_node; |
2014 | const struct sysctlnode *mslt_node; |
2015 | const struct sysctlnode *vtw_node; |
2016 | #ifdef TCP_DEBUG |
2017 | extern struct tcp_debug tcp_debug[TCP_NDEBUG]; |
2018 | extern int tcp_debx; |
2019 | #endif |
2020 | |
2021 | sysctl_createv(clog, 0, NULL, NULL, |
2022 | CTLFLAG_PERMANENT, |
2023 | CTLTYPE_NODE, pfname, NULL, |
2024 | NULL, 0, NULL, 0, |
2025 | CTL_NET, pf, CTL_EOL); |
2026 | sysctl_createv(clog, 0, NULL, NULL, |
2027 | CTLFLAG_PERMANENT, |
2028 | CTLTYPE_NODE, tcpname, |
2029 | SYSCTL_DESCR("TCP related settings" ), |
2030 | NULL, 0, NULL, 0, |
2031 | CTL_NET, pf, IPPROTO_TCP, CTL_EOL); |
2032 | |
2033 | sysctl_createv(clog, 0, NULL, NULL, |
2034 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2035 | CTLTYPE_INT, "rfc1323" , |
2036 | SYSCTL_DESCR("Enable RFC1323 TCP extensions" ), |
2037 | sysctl_update_tcpcb_template, 0, &tcp_do_rfc1323, 0, |
2038 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_RFC1323, CTL_EOL); |
2039 | sysctl_createv(clog, 0, NULL, NULL, |
2040 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2041 | CTLTYPE_INT, "sendspace" , |
2042 | SYSCTL_DESCR("Default TCP send buffer size" ), |
2043 | NULL, 0, &tcp_sendspace, 0, |
2044 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SENDSPACE, CTL_EOL); |
2045 | sysctl_createv(clog, 0, NULL, NULL, |
2046 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2047 | CTLTYPE_INT, "recvspace" , |
2048 | SYSCTL_DESCR("Default TCP receive buffer size" ), |
2049 | NULL, 0, &tcp_recvspace, 0, |
2050 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_RECVSPACE, CTL_EOL); |
2051 | sysctl_createv(clog, 0, NULL, NULL, |
2052 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2053 | CTLTYPE_INT, "mssdflt" , |
2054 | SYSCTL_DESCR("Default maximum segment size" ), |
2055 | sysctl_net_inet_tcp_mssdflt, 0, &tcp_mssdflt, 0, |
2056 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSSDFLT, CTL_EOL); |
2057 | sysctl_createv(clog, 0, NULL, NULL, |
2058 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2059 | CTLTYPE_INT, "minmss" , |
2060 | SYSCTL_DESCR("Lower limit for TCP maximum segment size" ), |
2061 | NULL, 0, &tcp_minmss, 0, |
2062 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2063 | sysctl_createv(clog, 0, NULL, NULL, |
2064 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2065 | CTLTYPE_INT, "msl" , |
2066 | SYSCTL_DESCR("Maximum Segment Life" ), |
2067 | NULL, 0, &tcp_msl, 0, |
2068 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSL, CTL_EOL); |
2069 | sysctl_createv(clog, 0, NULL, NULL, |
2070 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2071 | CTLTYPE_INT, "syn_cache_limit" , |
2072 | SYSCTL_DESCR("Maximum number of entries in the TCP " |
2073 | "compressed state engine" ), |
2074 | NULL, 0, &tcp_syn_cache_limit, 0, |
2075 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_CACHE_LIMIT, |
2076 | CTL_EOL); |
2077 | sysctl_createv(clog, 0, NULL, NULL, |
2078 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2079 | CTLTYPE_INT, "syn_bucket_limit" , |
2080 | SYSCTL_DESCR("Maximum number of entries per hash " |
2081 | "bucket in the TCP compressed state " |
2082 | "engine" ), |
2083 | NULL, 0, &tcp_syn_bucket_limit, 0, |
2084 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_BUCKET_LIMIT, |
2085 | CTL_EOL); |
2086 | #if 0 /* obsoleted */ |
2087 | sysctl_createv(clog, 0, NULL, NULL, |
2088 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2089 | CTLTYPE_INT, "syn_cache_interval" , |
2090 | SYSCTL_DESCR("TCP compressed state engine's timer interval" ), |
2091 | NULL, 0, &tcp_syn_cache_interval, 0, |
2092 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SYN_CACHE_INTER, |
2093 | CTL_EOL); |
2094 | #endif |
2095 | sysctl_createv(clog, 0, NULL, NULL, |
2096 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2097 | CTLTYPE_INT, "init_win" , |
2098 | SYSCTL_DESCR("Initial TCP congestion window" ), |
2099 | sysctl_tcp_init_win, 0, &tcp_init_win, 0, |
2100 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_INIT_WIN, CTL_EOL); |
2101 | sysctl_createv(clog, 0, NULL, NULL, |
2102 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2103 | CTLTYPE_INT, "mss_ifmtu" , |
2104 | SYSCTL_DESCR("Use interface MTU for calculating MSS" ), |
2105 | NULL, 0, &tcp_mss_ifmtu, 0, |
2106 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_MSS_IFMTU, CTL_EOL); |
2107 | sysctl_createv(clog, 0, NULL, &sack_node, |
2108 | CTLFLAG_PERMANENT, |
2109 | CTLTYPE_NODE, "sack" , |
2110 | SYSCTL_DESCR("RFC2018 Selective ACKnowledgement tunables" ), |
2111 | NULL, 0, NULL, 0, |
2112 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_EOL); |
2113 | |
2114 | /* Congctl subtree */ |
2115 | sysctl_createv(clog, 0, NULL, &congctl_node, |
2116 | CTLFLAG_PERMANENT, |
2117 | CTLTYPE_NODE, "congctl" , |
2118 | SYSCTL_DESCR("TCP Congestion Control" ), |
2119 | NULL, 0, NULL, 0, |
2120 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2121 | sysctl_createv(clog, 0, &congctl_node, NULL, |
2122 | CTLFLAG_PERMANENT, |
2123 | CTLTYPE_STRING, "available" , |
2124 | SYSCTL_DESCR("Available Congestion Control Mechanisms" ), |
2125 | NULL, 0, tcp_congctl_avail, 0, CTL_CREATE, CTL_EOL); |
2126 | sysctl_createv(clog, 0, &congctl_node, NULL, |
2127 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2128 | CTLTYPE_STRING, "selected" , |
2129 | SYSCTL_DESCR("Selected Congestion Control Mechanism" ), |
2130 | sysctl_tcp_congctl, 0, NULL, TCPCC_MAXLEN, |
2131 | CTL_CREATE, CTL_EOL); |
2132 | |
2133 | sysctl_createv(clog, 0, NULL, NULL, |
2134 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2135 | CTLTYPE_INT, "win_scale" , |
2136 | SYSCTL_DESCR("Use RFC1323 window scale options" ), |
2137 | sysctl_update_tcpcb_template, 0, &tcp_do_win_scale, 0, |
2138 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_WSCALE, CTL_EOL); |
2139 | sysctl_createv(clog, 0, NULL, NULL, |
2140 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2141 | CTLTYPE_INT, "timestamps" , |
2142 | SYSCTL_DESCR("Use RFC1323 time stamp options" ), |
2143 | sysctl_update_tcpcb_template, 0, &tcp_do_timestamps, 0, |
2144 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_TSTAMP, CTL_EOL); |
2145 | sysctl_createv(clog, 0, NULL, NULL, |
2146 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2147 | CTLTYPE_INT, "compat_42" , |
2148 | SYSCTL_DESCR("Enable workarounds for 4.2BSD TCP bugs" ), |
2149 | NULL, 0, &tcp_compat_42, 0, |
2150 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_COMPAT_42, CTL_EOL); |
2151 | sysctl_createv(clog, 0, NULL, NULL, |
2152 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2153 | CTLTYPE_INT, "cwm" , |
2154 | SYSCTL_DESCR("Hughes/Touch/Heidemann Congestion Window " |
2155 | "Monitoring" ), |
2156 | NULL, 0, &tcp_cwm, 0, |
2157 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_CWM, CTL_EOL); |
2158 | sysctl_createv(clog, 0, NULL, NULL, |
2159 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2160 | CTLTYPE_INT, "cwm_burstsize" , |
2161 | SYSCTL_DESCR("Congestion Window Monitoring allowed " |
2162 | "burst count in packets" ), |
2163 | NULL, 0, &tcp_cwm_burstsize, 0, |
2164 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_CWM_BURSTSIZE, |
2165 | CTL_EOL); |
2166 | sysctl_createv(clog, 0, NULL, NULL, |
2167 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2168 | CTLTYPE_INT, "ack_on_push" , |
2169 | SYSCTL_DESCR("Immediately return ACK when PSH is " |
2170 | "received" ), |
2171 | NULL, 0, &tcp_ack_on_push, 0, |
2172 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_ACK_ON_PUSH, CTL_EOL); |
2173 | sysctl_createv(clog, 0, NULL, NULL, |
2174 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2175 | CTLTYPE_INT, "keepidle" , |
2176 | SYSCTL_DESCR("Allowed connection idle ticks before a " |
2177 | "keepalive probe is sent" ), |
2178 | sysctl_tcp_keep, 0, &tcp_keepidle, 0, |
2179 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPIDLE, CTL_EOL); |
2180 | sysctl_createv(clog, 0, NULL, NULL, |
2181 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2182 | CTLTYPE_INT, "keepintvl" , |
2183 | SYSCTL_DESCR("Ticks before next keepalive probe is sent" ), |
2184 | sysctl_tcp_keep, 0, &tcp_keepintvl, 0, |
2185 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPINTVL, CTL_EOL); |
2186 | sysctl_createv(clog, 0, NULL, NULL, |
2187 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2188 | CTLTYPE_INT, "keepcnt" , |
2189 | SYSCTL_DESCR("Number of keepalive probes to send" ), |
2190 | sysctl_tcp_keep, 0, &tcp_keepcnt, 0, |
2191 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_KEEPCNT, CTL_EOL); |
2192 | sysctl_createv(clog, 0, NULL, NULL, |
2193 | CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE, |
2194 | CTLTYPE_INT, "slowhz" , |
2195 | SYSCTL_DESCR("Keepalive ticks per second" ), |
2196 | NULL, PR_SLOWHZ, NULL, 0, |
2197 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SLOWHZ, CTL_EOL); |
2198 | sysctl_createv(clog, 0, NULL, NULL, |
2199 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2200 | CTLTYPE_INT, "log_refused" , |
2201 | SYSCTL_DESCR("Log refused TCP connections" ), |
2202 | NULL, 0, &tcp_log_refused, 0, |
2203 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_LOG_REFUSED, CTL_EOL); |
2204 | #if 0 /* obsoleted */ |
2205 | sysctl_createv(clog, 0, NULL, NULL, |
2206 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2207 | CTLTYPE_INT, "rstratelimit" , NULL, |
2208 | NULL, 0, &tcp_rst_ratelim, 0, |
2209 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_RSTRATELIMIT, CTL_EOL); |
2210 | #endif |
2211 | sysctl_createv(clog, 0, NULL, NULL, |
2212 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2213 | CTLTYPE_INT, "rstppslimit" , |
2214 | SYSCTL_DESCR("Maximum number of RST packets to send " |
2215 | "per second" ), |
2216 | NULL, 0, &tcp_rst_ppslim, 0, |
2217 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_RSTPPSLIMIT, CTL_EOL); |
2218 | sysctl_createv(clog, 0, NULL, NULL, |
2219 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2220 | CTLTYPE_INT, "delack_ticks" , |
2221 | SYSCTL_DESCR("Number of ticks to delay sending an ACK" ), |
2222 | NULL, 0, &tcp_delack_ticks, 0, |
2223 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_DELACK_TICKS, CTL_EOL); |
2224 | sysctl_createv(clog, 0, NULL, NULL, |
2225 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2226 | CTLTYPE_INT, "init_win_local" , |
2227 | SYSCTL_DESCR("Initial TCP window size (in segments)" ), |
2228 | sysctl_tcp_init_win, 0, &tcp_init_win_local, 0, |
2229 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_INIT_WIN_LOCAL, |
2230 | CTL_EOL); |
2231 | sysctl_createv(clog, 0, NULL, NULL, |
2232 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2233 | CTLTYPE_STRUCT, "ident" , |
2234 | SYSCTL_DESCR("RFC1413 Identification Protocol lookups" ), |
2235 | sysctl_net_inet_tcp_ident, 0, NULL, sizeof(uid_t), |
2236 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_IDENT, CTL_EOL); |
2237 | sysctl_createv(clog, 0, NULL, NULL, |
2238 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2239 | CTLTYPE_INT, "do_loopback_cksum" , |
2240 | SYSCTL_DESCR("Perform TCP checksum on loopback" ), |
2241 | NULL, 0, &tcp_do_loopback_cksum, 0, |
2242 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_LOOPBACKCKSUM, |
2243 | CTL_EOL); |
2244 | sysctl_createv(clog, 0, NULL, NULL, |
2245 | CTLFLAG_PERMANENT, |
2246 | CTLTYPE_STRUCT, "pcblist" , |
2247 | SYSCTL_DESCR("TCP protocol control block list" ), |
2248 | sysctl_inpcblist, 0, &tcbtable, 0, |
2249 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, |
2250 | CTL_EOL); |
2251 | sysctl_createv(clog, 0, NULL, NULL, |
2252 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2253 | CTLTYPE_INT, "keepinit" , |
2254 | SYSCTL_DESCR("Ticks before initial tcp connection times out" ), |
2255 | sysctl_tcp_keep, 0, &tcp_keepinit, 0, |
2256 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2257 | |
2258 | /* TCP socket buffers auto-sizing nodes */ |
2259 | sysctl_createv(clog, 0, NULL, NULL, |
2260 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2261 | CTLTYPE_INT, "recvbuf_auto" , |
2262 | SYSCTL_DESCR("Enable automatic receive " |
2263 | "buffer sizing (experimental)" ), |
2264 | NULL, 0, &tcp_do_autorcvbuf, 0, |
2265 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2266 | sysctl_createv(clog, 0, NULL, NULL, |
2267 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2268 | CTLTYPE_INT, "recvbuf_inc" , |
2269 | SYSCTL_DESCR("Incrementor step size of " |
2270 | "automatic receive buffer" ), |
2271 | NULL, 0, &tcp_autorcvbuf_inc, 0, |
2272 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2273 | sysctl_createv(clog, 0, NULL, NULL, |
2274 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2275 | CTLTYPE_INT, "recvbuf_max" , |
2276 | SYSCTL_DESCR("Max size of automatic receive buffer" ), |
2277 | NULL, 0, &tcp_autorcvbuf_max, 0, |
2278 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2279 | |
2280 | sysctl_createv(clog, 0, NULL, NULL, |
2281 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2282 | CTLTYPE_INT, "sendbuf_auto" , |
2283 | SYSCTL_DESCR("Enable automatic send " |
2284 | "buffer sizing (experimental)" ), |
2285 | NULL, 0, &tcp_do_autosndbuf, 0, |
2286 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2287 | sysctl_createv(clog, 0, NULL, NULL, |
2288 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2289 | CTLTYPE_INT, "sendbuf_inc" , |
2290 | SYSCTL_DESCR("Incrementor step size of " |
2291 | "automatic send buffer" ), |
2292 | NULL, 0, &tcp_autosndbuf_inc, 0, |
2293 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2294 | sysctl_createv(clog, 0, NULL, NULL, |
2295 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2296 | CTLTYPE_INT, "sendbuf_max" , |
2297 | SYSCTL_DESCR("Max size of automatic send buffer" ), |
2298 | NULL, 0, &tcp_autosndbuf_max, 0, |
2299 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2300 | |
2301 | /* ECN subtree */ |
2302 | sysctl_createv(clog, 0, NULL, &ecn_node, |
2303 | CTLFLAG_PERMANENT, |
2304 | CTLTYPE_NODE, "ecn" , |
2305 | SYSCTL_DESCR("RFC3168 Explicit Congestion Notification" ), |
2306 | NULL, 0, NULL, 0, |
2307 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2308 | sysctl_createv(clog, 0, &ecn_node, NULL, |
2309 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2310 | CTLTYPE_INT, "enable" , |
2311 | SYSCTL_DESCR("Enable TCP Explicit Congestion " |
2312 | "Notification" ), |
2313 | NULL, 0, &tcp_do_ecn, 0, CTL_CREATE, CTL_EOL); |
2314 | sysctl_createv(clog, 0, &ecn_node, NULL, |
2315 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2316 | CTLTYPE_INT, "maxretries" , |
2317 | SYSCTL_DESCR("Number of times to retry ECN setup " |
2318 | "before disabling ECN on the connection" ), |
2319 | NULL, 0, &tcp_ecn_maxretries, 0, CTL_CREATE, CTL_EOL); |
2320 | |
2321 | /* SACK gets its own little subtree. */ |
2322 | sysctl_createv(clog, 0, NULL, &sack_node, |
2323 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2324 | CTLTYPE_INT, "enable" , |
2325 | SYSCTL_DESCR("Enable RFC2018 Selective ACKnowledgement" ), |
2326 | NULL, 0, &tcp_do_sack, 0, |
2327 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); |
2328 | sysctl_createv(clog, 0, NULL, &sack_node, |
2329 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2330 | CTLTYPE_INT, "maxholes" , |
2331 | SYSCTL_DESCR("Maximum number of TCP SACK holes allowed per connection" ), |
2332 | NULL, 0, &tcp_sack_tp_maxholes, 0, |
2333 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); |
2334 | sysctl_createv(clog, 0, NULL, &sack_node, |
2335 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2336 | CTLTYPE_INT, "globalmaxholes" , |
2337 | SYSCTL_DESCR("Global maximum number of TCP SACK holes" ), |
2338 | NULL, 0, &tcp_sack_globalmaxholes, 0, |
2339 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); |
2340 | sysctl_createv(clog, 0, NULL, &sack_node, |
2341 | CTLFLAG_PERMANENT, |
2342 | CTLTYPE_INT, "globalholes" , |
2343 | SYSCTL_DESCR("Global number of TCP SACK holes" ), |
2344 | NULL, 0, &tcp_sack_globalholes, 0, |
2345 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_SACK, CTL_CREATE, CTL_EOL); |
2346 | |
2347 | sysctl_createv(clog, 0, NULL, NULL, |
2348 | CTLFLAG_PERMANENT, |
2349 | CTLTYPE_STRUCT, "stats" , |
2350 | SYSCTL_DESCR("TCP statistics" ), |
2351 | sysctl_net_inet_tcp_stats, 0, NULL, 0, |
2352 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_STATS, |
2353 | CTL_EOL); |
2354 | sysctl_createv(clog, 0, NULL, NULL, |
2355 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2356 | CTLTYPE_INT, "local_by_rtt" , |
2357 | SYSCTL_DESCR("Use RTT estimator to decide which hosts " |
2358 | "are local" ), |
2359 | NULL, 0, &tcp_rttlocal, 0, |
2360 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2361 | #ifdef TCP_DEBUG |
2362 | sysctl_createv(clog, 0, NULL, NULL, |
2363 | CTLFLAG_PERMANENT, |
2364 | CTLTYPE_STRUCT, "debug" , |
2365 | SYSCTL_DESCR("TCP sockets debug information" ), |
2366 | NULL, 0, &tcp_debug, sizeof(tcp_debug), |
2367 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_DEBUG, |
2368 | CTL_EOL); |
2369 | sysctl_createv(clog, 0, NULL, NULL, |
2370 | CTLFLAG_PERMANENT, |
2371 | CTLTYPE_INT, "debx" , |
2372 | SYSCTL_DESCR("Number of TCP debug sockets messages" ), |
2373 | NULL, 0, &tcp_debx, sizeof(tcp_debx), |
2374 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_DEBX, |
2375 | CTL_EOL); |
2376 | #endif |
2377 | sysctl_createv(clog, 0, NULL, NULL, |
2378 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2379 | CTLTYPE_STRUCT, "drop" , |
2380 | SYSCTL_DESCR("TCP drop connection" ), |
2381 | sysctl_net_inet_tcp_drop, 0, NULL, 0, |
2382 | CTL_NET, pf, IPPROTO_TCP, TCPCTL_DROP, CTL_EOL); |
2383 | sysctl_createv(clog, 0, NULL, NULL, |
2384 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2385 | CTLTYPE_INT, "iss_hash" , |
2386 | SYSCTL_DESCR("Enable RFC 1948 ISS by cryptographic " |
2387 | "hash computation" ), |
2388 | NULL, 0, &tcp_do_rfc1948, sizeof(tcp_do_rfc1948), |
2389 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, |
2390 | CTL_EOL); |
2391 | |
2392 | /* ABC subtree */ |
2393 | |
2394 | sysctl_createv(clog, 0, NULL, &abc_node, |
2395 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "abc" , |
2396 | SYSCTL_DESCR("RFC3465 Appropriate Byte Counting (ABC)" ), |
2397 | NULL, 0, NULL, 0, |
2398 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2399 | sysctl_createv(clog, 0, &abc_node, NULL, |
2400 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2401 | CTLTYPE_INT, "enable" , |
2402 | SYSCTL_DESCR("Enable RFC3465 Appropriate Byte Counting" ), |
2403 | NULL, 0, &tcp_do_abc, 0, CTL_CREATE, CTL_EOL); |
2404 | sysctl_createv(clog, 0, &abc_node, NULL, |
2405 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2406 | CTLTYPE_INT, "aggressive" , |
2407 | SYSCTL_DESCR("1: L=2*SMSS 0: L=1*SMSS" ), |
2408 | NULL, 0, &tcp_abc_aggressive, 0, CTL_CREATE, CTL_EOL); |
2409 | |
2410 | /* MSL tuning subtree */ |
2411 | |
2412 | sysctl_createv(clog, 0, NULL, &mslt_node, |
2413 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "mslt" , |
2414 | SYSCTL_DESCR("MSL Tuning for TIME_WAIT truncation" ), |
2415 | NULL, 0, NULL, 0, |
2416 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2417 | sysctl_createv(clog, 0, &mslt_node, NULL, |
2418 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2419 | CTLTYPE_INT, "enable" , |
2420 | SYSCTL_DESCR("Enable TIME_WAIT truncation" ), |
2421 | NULL, 0, &tcp_msl_enable, 0, CTL_CREATE, CTL_EOL); |
2422 | sysctl_createv(clog, 0, &mslt_node, NULL, |
2423 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2424 | CTLTYPE_INT, "loopback" , |
2425 | SYSCTL_DESCR("MSL value to use for loopback connections" ), |
2426 | NULL, 0, &tcp_msl_loop, 0, CTL_CREATE, CTL_EOL); |
2427 | sysctl_createv(clog, 0, &mslt_node, NULL, |
2428 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2429 | CTLTYPE_INT, "local" , |
2430 | SYSCTL_DESCR("MSL value to use for local connections" ), |
2431 | NULL, 0, &tcp_msl_local, 0, CTL_CREATE, CTL_EOL); |
2432 | sysctl_createv(clog, 0, &mslt_node, NULL, |
2433 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2434 | CTLTYPE_INT, "remote" , |
2435 | SYSCTL_DESCR("MSL value to use for remote connections" ), |
2436 | NULL, 0, &tcp_msl_remote, 0, CTL_CREATE, CTL_EOL); |
2437 | sysctl_createv(clog, 0, &mslt_node, NULL, |
2438 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2439 | CTLTYPE_INT, "remote_threshold" , |
2440 | SYSCTL_DESCR("RTT estimate value to promote local to remote" ), |
2441 | NULL, 0, &tcp_msl_remote_threshold, 0, CTL_CREATE, CTL_EOL); |
2442 | |
2443 | /* vestigial TIME_WAIT tuning subtree */ |
2444 | |
2445 | sysctl_createv(clog, 0, NULL, &vtw_node, |
2446 | CTLFLAG_PERMANENT, CTLTYPE_NODE, "vtw" , |
2447 | SYSCTL_DESCR("Tuning for Vestigial TIME_WAIT" ), |
2448 | NULL, 0, NULL, 0, |
2449 | CTL_NET, pf, IPPROTO_TCP, CTL_CREATE, CTL_EOL); |
2450 | sysctl_createv(clog, 0, &vtw_node, NULL, |
2451 | CTLFLAG_PERMANENT|CTLFLAG_READWRITE, |
2452 | CTLTYPE_INT, "enable" , |
2453 | SYSCTL_DESCR("Enable Vestigial TIME_WAIT" ), |
2454 | sysctl_tcp_vtw_enable, 0, |
2455 | (pf == AF_INET) ? &tcp4_vtw_enable : &tcp6_vtw_enable, |
2456 | 0, CTL_CREATE, CTL_EOL); |
2457 | sysctl_createv(clog, 0, &vtw_node, NULL, |
2458 | CTLFLAG_PERMANENT|CTLFLAG_READONLY, |
2459 | CTLTYPE_INT, "entries" , |
2460 | SYSCTL_DESCR("Maximum number of vestigial TIME_WAIT entries" ), |
2461 | NULL, 0, &tcp_vtw_entries, 0, CTL_CREATE, CTL_EOL); |
2462 | } |
2463 | |
2464 | void |
2465 | tcp_usrreq_init(void) |
2466 | { |
2467 | |
2468 | #ifdef INET |
2469 | sysctl_net_inet_tcp_setup2(NULL, PF_INET, "inet" , "tcp" ); |
2470 | #endif |
2471 | #ifdef INET6 |
2472 | sysctl_net_inet_tcp_setup2(NULL, PF_INET6, "inet6" , "tcp6" ); |
2473 | #endif |
2474 | } |
2475 | |
2476 | PR_WRAP_USRREQS(tcp) |
2477 | #define tcp_attach tcp_attach_wrapper |
2478 | #define tcp_detach tcp_detach_wrapper |
2479 | #define tcp_accept tcp_accept_wrapper |
2480 | #define tcp_bind tcp_bind_wrapper |
2481 | #define tcp_listen tcp_listen_wrapper |
2482 | #define tcp_connect tcp_connect_wrapper |
2483 | #define tcp_connect2 tcp_connect2_wrapper |
2484 | #define tcp_disconnect tcp_disconnect_wrapper |
2485 | #define tcp_shutdown tcp_shutdown_wrapper |
2486 | #define tcp_abort tcp_abort_wrapper |
2487 | #define tcp_ioctl tcp_ioctl_wrapper |
2488 | #define tcp_stat tcp_stat_wrapper |
2489 | #define tcp_peeraddr tcp_peeraddr_wrapper |
2490 | #define tcp_sockaddr tcp_sockaddr_wrapper |
2491 | #define tcp_rcvd tcp_rcvd_wrapper |
2492 | #define tcp_recvoob tcp_recvoob_wrapper |
2493 | #define tcp_send tcp_send_wrapper |
2494 | #define tcp_sendoob tcp_sendoob_wrapper |
2495 | #define tcp_purgeif tcp_purgeif_wrapper |
2496 | |
2497 | const struct pr_usrreqs tcp_usrreqs = { |
2498 | .pr_attach = tcp_attach, |
2499 | .pr_detach = tcp_detach, |
2500 | .pr_accept = tcp_accept, |
2501 | .pr_bind = tcp_bind, |
2502 | .pr_listen = tcp_listen, |
2503 | .pr_connect = tcp_connect, |
2504 | .pr_connect2 = tcp_connect2, |
2505 | .pr_disconnect = tcp_disconnect, |
2506 | .pr_shutdown = tcp_shutdown, |
2507 | .pr_abort = tcp_abort, |
2508 | .pr_ioctl = tcp_ioctl, |
2509 | .pr_stat = tcp_stat, |
2510 | .pr_peeraddr = tcp_peeraddr, |
2511 | .pr_sockaddr = tcp_sockaddr, |
2512 | .pr_rcvd = tcp_rcvd, |
2513 | .pr_recvoob = tcp_recvoob, |
2514 | .pr_send = tcp_send, |
2515 | .pr_sendoob = tcp_sendoob, |
2516 | .pr_purgeif = tcp_purgeif, |
2517 | }; |
2518 | |