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1 | /*- |
2 | * Copyright (c) 1991 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * %sccs.include.redist.c% | |
6 | * | |
3a2fbed9 | 7 | * @(#)tp_pcb.c 7.17 (Berkeley) %G% |
7bcd1bb8 KB |
8 | */ |
9 | ||
c32c2ec1 | 10 | /*********************************************************** |
7b25382f | 11 | Copyright IBM Corporation 1987 |
c32c2ec1 KS |
12 | |
13 | All Rights Reserved | |
14 | ||
15 | Permission to use, copy, modify, and distribute this software and its | |
16 | documentation for any purpose and without fee is hereby granted, | |
17 | provided that the above copyright notice appear in all copies and that | |
18 | both that copyright notice and this permission notice appear in | |
19 | supporting documentation, and that the name of IBM not be | |
20 | used in advertising or publicity pertaining to distribution of the | |
21 | software without specific, written prior permission. | |
22 | ||
23 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
24 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
25 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
26 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
27 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
28 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
29 | SOFTWARE. | |
30 | ||
31 | ******************************************************************/ | |
32 | ||
33 | /* | |
34 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison | |
35 | */ | |
36 | /* | |
37 | * ARGO TP | |
38 | * | |
39 | * $Header: tp_pcb.c,v 5.4 88/11/18 17:28:24 nhall Exp $ | |
40 | * $Source: /usr/argo/sys/netiso/RCS/tp_pcb.c,v $ | |
41 | * | |
42 | * | |
43 | * This is the initialization and cleanup stuff - | |
44 | * for the tp machine in general as well as for the individual pcbs. | |
45 | * tp_init() is called at system startup. tp_attach() and tp_getref() are | |
46 | * called when a socket is created. tp_detach() and tp_freeref() | |
47 | * are called during the closing stage and/or when the reference timer | |
48 | * goes off. | |
49 | * tp_soisdisconnecting() and tp_soisdisconnected() are tp-specific | |
50 | * versions of soisconnect* | |
51 | * and are called (obviously) during the closing phase. | |
52 | * | |
53 | */ | |
54 | ||
c32c2ec1 | 55 | #include "param.h" |
01acbfa1 | 56 | #include "systm.h" |
c32c2ec1 KS |
57 | #include "mbuf.h" |
58 | #include "socket.h" | |
59 | #include "socketvar.h" | |
01acbfa1 | 60 | #include "domain.h" |
c32c2ec1 KS |
61 | #include "protosw.h" |
62 | #include "errno.h" | |
63 | #include "time.h" | |
a50e2bc0 KS |
64 | #include "argo_debug.h" |
65 | #include "tp_param.h" | |
66 | #include "tp_timer.h" | |
67 | #include "tp_ip.h" | |
68 | #include "tp_stat.h" | |
69 | #include "tp_pcb.h" | |
70 | #include "tp_tpdu.h" | |
71 | #include "tp_trace.h" | |
72 | #include "tp_meas.h" | |
73 | #include "tp_seq.h" | |
74 | #include "tp_clnp.h" | |
c32c2ec1 | 75 | |
c32c2ec1 KS |
76 | struct tp_param tp_param = { |
77 | 1, /* configured */ | |
78 | }; | |
79 | ||
80 | /* ticks are in units of: | |
81 | * 500 nano-fortnights ;-) or | |
82 | * 500 ms or | |
83 | * 1/2 second | |
84 | */ | |
85 | ||
86 | struct tp_conn_param tp_conn_param[] = { | |
87 | /* ISO_CLNS: TP4 CONNECTION LESS */ | |
88 | { | |
89 | TP_NRETRANS, /* short p_Nretrans; */ | |
90 | 20, /* 10 sec */ /* short p_dr_ticks; */ | |
91 | ||
92 | 20, /* 10 sec */ /* short p_cc_ticks; */ | |
93 | 20, /* 10 sec */ /* short p_dt_ticks; */ | |
94 | ||
95 | 40, /* 20 sec */ /* short p_x_ticks; */ | |
96 | 80, /* 40 sec */ /* short p_cr_ticks;*/ | |
97 | ||
98 | 240, /* 2 min */ /* short p_keepalive_ticks;*/ | |
99 | 10, /* 5 sec */ /* short p_sendack_ticks; */ | |
100 | ||
101 | 600, /* 5 min */ /* short p_ref_ticks; */ | |
102 | 360, /* 3 min */ /* short p_inact_ticks; */ | |
103 | ||
104 | (short) 100, /* short p_lcdtfract */ | |
105 | (short) TP_SOCKBUFSIZE, /* short p_winsize */ | |
106 | TP_TPDUSIZE, /* u_char p_tpdusize */ | |
107 | ||
108 | TPACK_WINDOW, /* 4 bits p_ack_strat */ | |
109 | TPRX_USE_CW | TPRX_FASTSTART, | |
110 | /* 4 bits p_rx_strat*/ | |
111 | TP_CLASS_4 | TP_CLASS_0,/* 5 bits p_class */ | |
112 | 1, /* 1 bit xtd format */ | |
113 | 1, /* 1 bit xpd service */ | |
114 | 1, /* 1 bit use_checksum */ | |
115 | 0, /* 1 bit use net xpd */ | |
116 | 0, /* 1 bit use rcc */ | |
117 | 0, /* 1 bit use efc */ | |
44f52ea5 | 118 | 1, /* no disc indications */ |
c32c2ec1 KS |
119 | 0, /* don't change params */ |
120 | ISO_CLNS, /* p_netservice */ | |
121 | }, | |
122 | /* IN_CLNS: TP4 CONNECTION LESS */ | |
123 | { | |
124 | TP_NRETRANS, /* short p_Nretrans; */ | |
125 | 20, /* 10 sec */ /* short p_dr_ticks; */ | |
126 | ||
127 | 20, /* 10 sec */ /* short p_cc_ticks; */ | |
128 | 20, /* 10 sec */ /* short p_dt_ticks; */ | |
129 | ||
130 | 40, /* 20 sec */ /* short p_x_ticks; */ | |
131 | 80, /* 40 sec */ /* short p_cr_ticks;*/ | |
132 | ||
133 | 240, /* 2 min */ /* short p_keepalive_ticks;*/ | |
134 | 10, /* 5 sec */ /* short p_sendack_ticks; */ | |
135 | ||
136 | 600, /* 5 min */ /* short p_ref_ticks; */ | |
137 | 360, /* 3 min */ /* short p_inact_ticks; */ | |
138 | ||
139 | (short) 100, /* short p_lcdtfract */ | |
140 | (short) TP_SOCKBUFSIZE, /* short p_winsize */ | |
141 | TP_TPDUSIZE, /* u_char p_tpdusize */ | |
142 | ||
143 | TPACK_WINDOW, /* 4 bits p_ack_strat */ | |
144 | TPRX_USE_CW | TPRX_FASTSTART, | |
145 | /* 4 bits p_rx_strat*/ | |
146 | TP_CLASS_4, /* 5 bits p_class */ | |
147 | 1, /* 1 bit xtd format */ | |
148 | 1, /* 1 bit xpd service */ | |
149 | 1, /* 1 bit use_checksum */ | |
150 | 0, /* 1 bit use net xpd */ | |
151 | 0, /* 1 bit use rcc */ | |
152 | 0, /* 1 bit use efc */ | |
44f52ea5 | 153 | 1, /* no disc indications */ |
c32c2ec1 KS |
154 | 0, /* don't change params */ |
155 | IN_CLNS, /* p_netservice */ | |
156 | }, | |
157 | /* ISO_CONS: TP0 CONNECTION MODE */ | |
158 | { | |
159 | TP_NRETRANS, /* short p_Nretrans; */ | |
160 | 0, /* n/a */ /* short p_dr_ticks; */ | |
161 | ||
162 | 40, /* 20 sec */ /* short p_cc_ticks; */ | |
163 | 0, /* n/a */ /* short p_dt_ticks; */ | |
164 | ||
165 | 0, /* n/a */ /* short p_x_ticks; */ | |
166 | 360, /* 3 min */ /* short p_cr_ticks;*/ | |
167 | ||
168 | 0, /* n/a */ /* short p_keepalive_ticks;*/ | |
169 | 0, /* n/a */ /* short p_sendack_ticks; */ | |
170 | ||
171 | 600, /* for cr/cc to clear *//* short p_ref_ticks; */ | |
172 | 0, /* n/a */ /* short p_inact_ticks; */ | |
173 | ||
174 | /* Use tp4 defaults just in case the user changes ONLY | |
175 | * the class | |
176 | */ | |
177 | (short) 100, /* short p_lcdtfract */ | |
178 | (short) TP0_SOCKBUFSIZE, /* short p_winsize */ | |
179 | TP0_TPDUSIZE, /* 8 bits p_tpdusize */ | |
180 | ||
181 | 0, /* 4 bits p_ack_strat */ | |
182 | 0, /* 4 bits p_rx_strat*/ | |
183 | TP_CLASS_0, /* 5 bits p_class */ | |
184 | 0, /* 1 bit xtd format */ | |
185 | 0, /* 1 bit xpd service */ | |
186 | 0, /* 1 bit use_checksum */ | |
187 | 0, /* 1 bit use net xpd */ | |
188 | 0, /* 1 bit use rcc */ | |
189 | 0, /* 1 bit use efc */ | |
190 | 0, /* no disc indications */ | |
191 | 0, /* don't change params */ | |
192 | ISO_CONS, /* p_netservice */ | |
193 | }, | |
194 | /* ISO_COSNS: TP4 CONNECTION LESS SERVICE over CONSNS */ | |
195 | { | |
196 | TP_NRETRANS, /* short p_Nretrans; */ | |
197 | 40, /* 20 sec */ /* short p_dr_ticks; */ | |
198 | ||
199 | 40, /* 20 sec */ /* short p_cc_ticks; */ | |
200 | 80, /* 40 sec */ /* short p_dt_ticks; */ | |
201 | ||
202 | 120, /* 1 min */ /* short p_x_ticks; */ | |
203 | 360, /* 3 min */ /* short p_cr_ticks;*/ | |
204 | ||
205 | 360, /* 3 min */ /* short p_keepalive_ticks;*/ | |
206 | 20, /* 10 sec */ /* short p_sendack_ticks; */ | |
207 | ||
208 | 600, /* 5 min */ /* short p_ref_ticks; */ | |
209 | 480, /* 4 min */ /* short p_inact_ticks; */ | |
210 | ||
211 | (short) 100, /* short p_lcdtfract */ | |
212 | (short) TP0_SOCKBUFSIZE, /* short p_winsize */ | |
213 | TP0_TPDUSIZE, /* u_char p_tpdusize */ | |
214 | ||
215 | TPACK_WINDOW, /* 4 bits p_ack_strat */ | |
216 | TPRX_USE_CW , /* No fast start */ | |
217 | /* 4 bits p_rx_strat*/ | |
218 | TP_CLASS_4 | TP_CLASS_0,/* 5 bits p_class */ | |
219 | 0, /* 1 bit xtd format */ | |
220 | 1, /* 1 bit xpd service */ | |
221 | 1, /* 1 bit use_checksum */ | |
222 | 0, /* 1 bit use net xpd */ | |
223 | 0, /* 1 bit use rcc */ | |
224 | 0, /* 1 bit use efc */ | |
225 | 0, /* no disc indications */ | |
226 | 0, /* don't change params */ | |
227 | ISO_COSNS, /* p_netservice */ | |
228 | }, | |
229 | }; | |
230 | ||
231 | #ifdef INET | |
232 | int in_putnetaddr(); | |
233 | int in_getnetaddr(); | |
63f88aec | 234 | int in_cmpnetaddr(); |
c32c2ec1 KS |
235 | int in_putsufx(); |
236 | int in_getsufx(); | |
237 | int in_recycle_tsuffix(); | |
238 | int tpip_mtu(); | |
239 | int in_pcbbind(); | |
240 | int in_pcbconnect(); | |
241 | int in_pcbdisconnect(); | |
242 | int in_pcbdetach(); | |
243 | int in_pcballoc(); | |
244 | int tpip_output(); | |
245 | int tpip_output_dg(); | |
246 | struct inpcb tp_inpcb; | |
247 | #endif INET | |
248 | #ifdef ISO | |
249 | int iso_putnetaddr(); | |
250 | int iso_getnetaddr(); | |
63f88aec | 251 | int iso_cmpnetaddr(); |
c32c2ec1 KS |
252 | int iso_putsufx(); |
253 | int iso_getsufx(); | |
254 | int iso_recycle_tsuffix(); | |
255 | int tpclnp_mtu(); | |
256 | int iso_pcbbind(); | |
257 | int iso_pcbconnect(); | |
258 | int iso_pcbdisconnect(); | |
259 | int iso_pcbdetach(); | |
260 | int iso_pcballoc(); | |
261 | int tpclnp_output(); | |
262 | int tpclnp_output_dg(); | |
263 | int iso_nlctloutput(); | |
264 | struct isopcb tp_isopcb; | |
265 | #endif ISO | |
194a383a | 266 | #ifdef TPCONS |
c32c2ec1 KS |
267 | int iso_putnetaddr(); |
268 | int iso_getnetaddr(); | |
63f88aec | 269 | int iso_cmpnetaddr(); |
c32c2ec1 KS |
270 | int iso_putsufx(); |
271 | int iso_getsufx(); | |
272 | int iso_recycle_tsuffix(); | |
c32c2ec1 | 273 | int iso_pcbbind(); |
194a383a | 274 | int tpcons_pcbconnect(); |
80a3ea26 | 275 | int tpclnp_mtu(); |
c32c2ec1 KS |
276 | int iso_pcbdisconnect(); |
277 | int iso_pcbdetach(); | |
278 | int iso_pcballoc(); | |
279 | int tpcons_output(); | |
c32c2ec1 | 280 | struct isopcb tp_isopcb; |
194a383a | 281 | #endif TPCONS |
c32c2ec1 | 282 | |
a50e2bc0 | 283 | |
c32c2ec1 KS |
284 | struct nl_protosw nl_protosw[] = { |
285 | /* ISO_CLNS */ | |
286 | #ifdef ISO | |
63f88aec | 287 | { AF_ISO, iso_putnetaddr, iso_getnetaddr, iso_cmpnetaddr, |
c32c2ec1 KS |
288 | iso_putsufx, iso_getsufx, |
289 | iso_recycle_tsuffix, | |
290 | tpclnp_mtu, iso_pcbbind, iso_pcbconnect, | |
291 | iso_pcbdisconnect, iso_pcbdetach, | |
292 | iso_pcballoc, | |
293 | tpclnp_output, tpclnp_output_dg, iso_nlctloutput, | |
294 | (caddr_t) &tp_isopcb, | |
295 | }, | |
a50e2bc0 KS |
296 | #else |
297 | { 0 }, | |
c32c2ec1 KS |
298 | #endif ISO |
299 | /* IN_CLNS */ | |
300 | #ifdef INET | |
63f88aec | 301 | { AF_INET, in_putnetaddr, in_getnetaddr, in_cmpnetaddr, |
c32c2ec1 KS |
302 | in_putsufx, in_getsufx, |
303 | in_recycle_tsuffix, | |
304 | tpip_mtu, in_pcbbind, in_pcbconnect, | |
305 | in_pcbdisconnect, in_pcbdetach, | |
306 | in_pcballoc, | |
307 | tpip_output, tpip_output_dg, /* nl_ctloutput */ NULL, | |
308 | (caddr_t) &tp_inpcb, | |
309 | }, | |
a50e2bc0 KS |
310 | #else |
311 | { 0 }, | |
c32c2ec1 KS |
312 | #endif INET |
313 | /* ISO_CONS */ | |
194a383a | 314 | #if defined(ISO) && defined(TPCONS) |
63f88aec | 315 | { AF_ISO, iso_putnetaddr, iso_getnetaddr, iso_cmpnetaddr, |
c32c2ec1 KS |
316 | iso_putsufx, iso_getsufx, |
317 | iso_recycle_tsuffix, | |
80a3ea26 | 318 | tpclnp_mtu, iso_pcbbind, tpcons_pcbconnect, |
c32c2ec1 KS |
319 | iso_pcbdisconnect, iso_pcbdetach, |
320 | iso_pcballoc, | |
194a383a | 321 | tpcons_output, tpcons_output, iso_nlctloutput, |
c32c2ec1 KS |
322 | (caddr_t) &tp_isopcb, |
323 | }, | |
a50e2bc0 KS |
324 | #else |
325 | { 0 }, | |
326 | #endif ISO_CONS | |
327 | /* End of protosw marker */ | |
328 | { 0 } | |
c32c2ec1 KS |
329 | }; |
330 | ||
331 | /* | |
332 | * NAME: tp_init() | |
333 | * | |
334 | * CALLED FROM: | |
335 | * autoconf through the protosw structure | |
336 | * | |
337 | * FUNCTION: | |
338 | * initialize tp machine | |
339 | * | |
340 | * RETURNS: Nada | |
341 | * | |
342 | * SIDE EFFECTS: | |
343 | * | |
344 | * NOTES: | |
345 | */ | |
a50e2bc0 | 346 | int |
c32c2ec1 KS |
347 | tp_init() |
348 | { | |
349 | static int init_done=0; | |
350 | void tp_timerinit(); | |
351 | ||
352 | if (init_done++) | |
a50e2bc0 | 353 | return 0; |
c32c2ec1 | 354 | |
c32c2ec1 KS |
355 | |
356 | /* FOR INET */ | |
357 | tp_inpcb.inp_next = tp_inpcb.inp_prev = &tp_inpcb; | |
358 | /* FOR ISO */ | |
359 | tp_isopcb.isop_next = tp_isopcb.isop_prev = &tp_isopcb; | |
360 | ||
620f4252 KS |
361 | tp_start_win = 2; |
362 | ||
c32c2ec1 KS |
363 | tp_timerinit(); |
364 | bzero((caddr_t)&tp_stat, sizeof(struct tp_stat)); | |
a50e2bc0 | 365 | return 0; |
c32c2ec1 KS |
366 | } |
367 | ||
368 | /* | |
369 | * NAME: tp_soisdisconnecting() | |
370 | * | |
371 | * CALLED FROM: | |
372 | * tp.trans | |
373 | * | |
374 | * FUNCTION and ARGUMENTS: | |
375 | * Set state of the socket (so) to reflect that fact that we're disconnectING | |
376 | * | |
377 | * RETURNS: Nada | |
378 | * | |
379 | * SIDE EFFECTS: | |
380 | * | |
381 | * NOTES: | |
382 | * This differs from the regular soisdisconnecting() in that the latter | |
383 | * also sets the SS_CANTRECVMORE and SS_CANTSENDMORE flags. | |
384 | * We don't want to set those flags because those flags will cause | |
385 | * a SIGPIPE to be delivered in sosend() and we don't like that. | |
386 | * If anyone else is sleeping on this socket, wake 'em up. | |
387 | */ | |
388 | void | |
389 | tp_soisdisconnecting(so) | |
390 | register struct socket *so; | |
391 | { | |
44f52ea5 KS |
392 | soisdisconnecting(so); |
393 | so->so_state &= ~SS_CANTSENDMORE; | |
c32c2ec1 KS |
394 | IFPERF(sototpcb(so)) |
395 | register struct tp_pcb *tpcb = sototpcb(so); | |
396 | u_int fsufx, lsufx; | |
397 | ||
a50e2bc0 KS |
398 | bcopy ((caddr_t)tpcb->tp_fsuffix, (caddr_t)&fsufx, sizeof(u_int) ); |
399 | bcopy ((caddr_t)tpcb->tp_lsuffix, (caddr_t)&lsufx, sizeof(u_int) ); | |
c32c2ec1 | 400 | |
a50e2bc0 | 401 | tpmeas(tpcb->tp_lref, TPtime_close, &time, fsufx, lsufx, tpcb->tp_fref); |
c32c2ec1 KS |
402 | tpcb->tp_perf_on = 0; /* turn perf off */ |
403 | ENDPERF | |
404 | } | |
405 | ||
406 | ||
407 | /* | |
408 | * NAME: tp_soisdisconnected() | |
409 | * | |
410 | * CALLED FROM: | |
411 | * tp.trans | |
412 | * | |
413 | * FUNCTION and ARGUMENTS: | |
414 | * Set state of the socket (so) to reflect that fact that we're disconnectED | |
415 | * Set the state of the reference structure to closed, and | |
416 | * recycle the suffix. | |
417 | * Start a reference timer. | |
418 | * | |
419 | * RETURNS: Nada | |
420 | * | |
421 | * SIDE EFFECTS: | |
422 | * | |
423 | * NOTES: | |
424 | * This differs from the regular soisdisconnected() in that the latter | |
425 | * also sets the SS_CANTRECVMORE and SS_CANTSENDMORE flags. | |
426 | * We don't want to set those flags because those flags will cause | |
427 | * a SIGPIPE to be delivered in sosend() and we don't like that. | |
428 | * If anyone else is sleeping on this socket, wake 'em up. | |
429 | */ | |
430 | void | |
431 | tp_soisdisconnected(tpcb) | |
432 | register struct tp_pcb *tpcb; | |
433 | { | |
434 | register struct socket *so = tpcb->tp_sock; | |
435 | ||
44f52ea5 KS |
436 | soisdisconnecting(so); |
437 | so->so_state &= ~SS_CANTSENDMORE; | |
3a2fbed9 | 438 | IFPERF(tpcb) |
a50e2bc0 | 439 | register struct tp_pcb *ttpcb = sototpcb(so); |
c32c2ec1 KS |
440 | u_int fsufx, lsufx; |
441 | ||
442 | /* CHOKE */ | |
a50e2bc0 KS |
443 | bcopy ((caddr_t)ttpcb->tp_fsuffix, (caddr_t)&fsufx, sizeof(u_int) ); |
444 | bcopy ((caddr_t)ttpcb->tp_lsuffix, (caddr_t)&lsufx, sizeof(u_int) ); | |
c32c2ec1 | 445 | |
a50e2bc0 KS |
446 | tpmeas(ttpcb->tp_lref, TPtime_close, |
447 | &time, &lsufx, &fsufx, ttpcb->tp_fref); | |
c32c2ec1 KS |
448 | tpcb->tp_perf_on = 0; /* turn perf off */ |
449 | ENDPERF | |
450 | ||
3a2fbed9 KS |
451 | tpcb->tp_refstate = REF_FROZEN; |
452 | tp_recycle_tsuffix(tpcb); | |
c32c2ec1 KS |
453 | tp_etimeout(tpcb->tp_refp, TM_reference, 0,0,0, (int)tpcb->tp_refer_ticks); |
454 | } | |
455 | ||
c32c2ec1 KS |
456 | /* |
457 | * NAME: tp_freeref() | |
458 | * | |
459 | * CALLED FROM: | |
460 | * tp.trans when the reference timer goes off, and | |
461 | * from tp_attach() and tp_detach() when a tpcb is partially set up but not | |
462 | * set up enough to have a ref timer set for it, and it's discarded | |
463 | * due to some sort of error or an early close() | |
464 | * | |
465 | * FUNCTION and ARGUMENTS: | |
466 | * Frees the reference represented by (r) for re-use. | |
467 | * | |
468 | * RETURNS: Nothing | |
469 | * | |
470 | * SIDE EFFECTS: | |
471 | * | |
472 | * NOTES: better be called at clock priority !!!!! | |
473 | */ | |
474 | void | |
475 | tp_freeref(r) | |
476 | register struct tp_ref *r; | |
477 | { | |
3a2fbed9 | 478 | register struct tp_pcb *tpcb = r->tpr_pcb; |
c32c2ec1 KS |
479 | IFDEBUG(D_TIMER) |
480 | printf("tp_freeref called for ref %d maxrefopen %d\n", | |
3a2fbed9 | 481 | r - tp_ref, tp_refinfo.tpr_maxopen); |
c32c2ec1 KS |
482 | ENDDEBUG |
483 | IFTRACE(D_TIMER) | |
3a2fbed9 KS |
484 | tptrace(TPPTmisc, "tp_freeref ref maxrefopen", |
485 | r - tp_ref, tp_refinfo.tpr_maxopen, 0, 0); | |
c32c2ec1 KS |
486 | ENDTRACE |
487 | r->tpr_state = REF_FREE; | |
488 | IFDEBUG(D_CONN) | |
489 | printf("tp_freeref: CLEARING tpr_pcb 0x%x\n", r->tpr_pcb); | |
490 | ENDDEBUG | |
491 | r->tpr_pcb = (struct tp_pcb *)0; | |
3a2fbed9 KS |
492 | if (tpcb) |
493 | tpcb->tp_refp = 0; | |
c32c2ec1 | 494 | |
3a2fbed9 KS |
495 | for (r = tp_ref + tp_refinfo.tpr_maxopen; r > tp_ref; r--) |
496 | if (r->tpr_pcb) | |
c32c2ec1 | 497 | break; |
3a2fbed9 KS |
498 | tp_refinfo.tpr_maxopen = r - tp_ref; |
499 | tp_refinfo.tpr_numopen--; | |
500 | ||
c32c2ec1 | 501 | IFDEBUG(D_TIMER) |
3a2fbed9 | 502 | printf("tp_freeref ends w/ maxrefopen %d\n", tp_refinfo.tpr_maxopen); |
c32c2ec1 KS |
503 | ENDDEBUG |
504 | } | |
505 | ||
506 | /* | |
507 | * NAME: tp_getref() | |
508 | * | |
509 | * CALLED FROM: | |
510 | * tp_attach() | |
511 | * | |
512 | * FUNCTION and ARGUMENTS: | |
513 | * obtains the next free reference and allocates the appropriate | |
514 | * ref structure, links that structure to (tpcb) | |
515 | * | |
516 | * RETURN VALUE: | |
517 | * a reference number | |
518 | * or TP_ENOREF | |
519 | * | |
520 | * SIDE EFFECTS: | |
521 | * | |
522 | * NOTES: | |
523 | */ | |
3a2fbed9 | 524 | RefNum |
c32c2ec1 KS |
525 | tp_getref(tpcb) |
526 | register struct tp_pcb *tpcb; | |
527 | { | |
3a2fbed9 KS |
528 | register struct tp_ref *r, *rlim; |
529 | register int i; | |
530 | caddr_t obase; | |
531 | unsigned size; | |
532 | ||
533 | if (++tp_refinfo.tpr_numopen < tp_refinfo.tpr_size) | |
534 | for (r = tp_refinfo.tpr_base, rlim = r + tp_refinfo.tpr_size; | |
535 | ++r < rlim; ) /* tp_ref[0] is never used */ | |
536 | if (r->tpr_pcb == 0) | |
537 | goto got_one; | |
538 | /* else have to allocate more space */ | |
539 | ||
540 | obase = (caddr_t)tp_refinfo.tpr_base; | |
541 | size = tp_refinfo.tpr_size * sizeof(struct tp_ref); | |
542 | r = (struct tp_ref *) malloc(size + size, M_PCB, M_NOWAIT); | |
543 | if (r == 0) | |
544 | return (--tp_refinfo.tpr_numopen, TP_ENOREF); | |
545 | tp_refinfo.tpr_base = tp_ref = r; | |
546 | tp_refinfo.tpr_size *= 2; | |
547 | bcopy(obase, (caddr_t)r, size); | |
548 | free(obase, M_PCB); | |
549 | r = (struct tp_ref *)(size + (caddr_t)r); | |
550 | bzero((caddr_t)r, size); | |
551 | ||
552 | got_one: | |
c32c2ec1 | 553 | r->tpr_pcb = tpcb; |
3a2fbed9 | 554 | r->tpr_state = REF_OPENING; |
c32c2ec1 | 555 | tpcb->tp_refp = r; |
3a2fbed9 KS |
556 | i = r - tp_refinfo.tpr_base; |
557 | if (tp_refinfo.tpr_maxopen < i) | |
558 | tp_refinfo.tpr_maxopen = i; | |
c32c2ec1 KS |
559 | return i; |
560 | } | |
561 | ||
01acbfa1 KS |
562 | /* |
563 | * NAME: tp_set_npcb() | |
564 | * | |
565 | * CALLED FROM: | |
566 | * tp_attach(), tp_route_to() | |
567 | * | |
568 | * FUNCTION and ARGUMENTS: | |
569 | * given a tpcb, allocate an appropriate lower-lever npcb, freeing | |
570 | * any old ones that might need re-assigning. | |
571 | */ | |
572 | tp_set_npcb(tpcb) | |
573 | register struct tp_pcb *tpcb; | |
574 | { | |
575 | register struct socket *so = tpcb->tp_sock; | |
576 | int error; | |
577 | ||
578 | if (tpcb->tp_nlproto && tpcb->tp_npcb) { | |
579 | short so_state = so->so_state; | |
580 | so->so_state &= ~SS_NOFDREF; | |
581 | tpcb->tp_nlproto->nlp_pcbdetach(tpcb->tp_npcb); | |
582 | so->so_state = so_state; | |
583 | } | |
584 | tpcb->tp_nlproto = &nl_protosw[tpcb->tp_netservice]; | |
585 | /* xx_pcballoc sets so_pcb */ | |
586 | error = tpcb->tp_nlproto->nlp_pcballoc(so, tpcb->tp_nlproto->nlp_pcblist); | |
587 | tpcb->tp_npcb = so->so_pcb; | |
588 | so->so_pcb = (caddr_t)tpcb; | |
589 | return (error); | |
590 | } | |
c32c2ec1 KS |
591 | /* |
592 | * NAME: tp_attach() | |
593 | * | |
594 | * CALLED FROM: | |
595 | * tp_usrreq, PRU_ATTACH | |
596 | * | |
597 | * FUNCTION and ARGUMENTS: | |
598 | * given a socket (so) and a protocol family (dom), allocate a tpcb | |
599 | * and ref structure, initialize everything in the structures that | |
600 | * needs to be initialized. | |
601 | * | |
602 | * RETURN VALUE: | |
603 | * 0 ok | |
604 | * EINVAL if DEBUG(X) in is on and a disaster has occurred | |
605 | * ENOPROTOOPT if TP hasn't been configured or if the | |
606 | * socket wasn't created with tp as its protocol | |
607 | * EISCONN if this socket is already part of a connection | |
608 | * ETOOMANYREFS if ran out of tp reference numbers. | |
609 | * E* whatever error is returned from soreserve() | |
610 | * for from the network-layer pcb allocation routine | |
611 | * | |
612 | * SIDE EFFECTS: | |
613 | * | |
614 | * NOTES: | |
615 | */ | |
01acbfa1 KS |
616 | tp_attach(so, protocol) |
617 | struct socket *so; | |
618 | int protocol; | |
c32c2ec1 KS |
619 | { |
620 | register struct tp_pcb *tpcb; | |
c32c2ec1 | 621 | int error; |
01acbfa1 | 622 | int dom = so->so_proto->pr_domain->dom_family; |
c32c2ec1 KS |
623 | extern struct tp_conn_param tp_conn_param[]; |
624 | ||
625 | IFDEBUG(D_CONN) | |
626 | printf("tp_attach:dom 0x%x so 0x%x ", dom, so); | |
627 | ENDDEBUG | |
628 | IFTRACE(D_CONN) | |
629 | tptrace(TPPTmisc, "tp_attach:dom so", dom, so, 0, 0); | |
630 | ENDTRACE | |
631 | if ( ! tp_param.tpp_configed ) { | |
632 | error = ENOPROTOOPT; /* protocol not available */ | |
633 | goto bad2; | |
634 | } | |
635 | ||
636 | if (so->so_pcb != NULL) { | |
637 | return EISCONN; /* socket already part of a connection*/ | |
638 | } | |
639 | ||
3a2fbed9 | 640 | error = soreserve(so, 2 * TP_SOCKBUFSIZE, TP_SOCKBUFSIZE); |
c32c2ec1 KS |
641 | /* later an ioctl will allow reallocation IF still in closed state */ |
642 | ||
643 | if (error) | |
644 | goto bad2; | |
645 | ||
a50e2bc0 KS |
646 | MALLOC(tpcb, struct tp_pcb *, sizeof(*tpcb), M_PCB, M_NOWAIT); |
647 | if (tpcb == NULL) { | |
c32c2ec1 KS |
648 | error = ENOBUFS; |
649 | goto bad2; | |
650 | } | |
c32c2ec1 KS |
651 | bzero( (caddr_t)tpcb, sizeof (struct tp_pcb) ); |
652 | ||
c32c2ec1 KS |
653 | if ( ((tpcb->tp_lref = tp_getref(tpcb)) & TP_ENOREF) != 0 ) { |
654 | error = ETOOMANYREFS; | |
655 | goto bad3; | |
656 | } | |
657 | tpcb->tp_sock = so; | |
658 | tpcb->tp_domain = dom; | |
01acbfa1 KS |
659 | /* tpcb->tp_proto = protocol; someday maybe? */ |
660 | if (protocol && protocol<ISOPROTO_TP4) { | |
c32c2ec1 KS |
661 | tpcb->tp_netservice = ISO_CONS; |
662 | tpcb->tp_snduna = (SeqNum) -1;/* kludge so the pseudo-ack from the CR/CC | |
663 | * will generate correct fake-ack values | |
664 | */ | |
665 | } else { | |
666 | tpcb->tp_netservice = (dom== AF_INET)?IN_CLNS:ISO_CLNS; | |
667 | /* the default */ | |
668 | } | |
669 | tpcb->_tp_param = tp_conn_param[tpcb->tp_netservice]; | |
670 | ||
671 | tpcb->tp_cong_win = 1; | |
672 | tpcb->tp_state = TP_CLOSED; | |
673 | tpcb->tp_vers = TP_VERSION; | |
fab7bc7c | 674 | tpcb->tp_notdetached = 1; |
c32c2ec1 KS |
675 | |
676 | /* Spec says default is 128 octets, | |
677 | * that is, if the tpdusize argument never appears, use 128. | |
678 | * As the initiator, we will always "propose" the 2048 | |
679 | * size, that is, we will put this argument in the CR | |
680 | * always, but accept what the other side sends on the CC. | |
681 | * If the initiator sends us something larger on a CR, | |
682 | * we'll respond w/ this. | |
683 | * Our maximum is 4096. See tp_chksum.c comments. | |
684 | */ | |
685 | tpcb->tp_l_tpdusize = 1 << tpcb->tp_tpdusize; | |
686 | ||
687 | tpcb->tp_seqmask = TP_NML_FMT_MASK; | |
688 | tpcb->tp_seqbit = TP_NML_FMT_BIT; | |
689 | tpcb->tp_seqhalf = tpcb->tp_seqbit >> 1; | |
690 | tpcb->tp_sndhiwat = (SeqNum) - 1; /* a kludge but it works */ | |
691 | tpcb->tp_s_subseq = 0; | |
692 | ||
693 | /* attach to a network-layer protoswitch */ | |
01acbfa1 | 694 | if ( error = tp_set_npcb(tpcb)) |
c32c2ec1 | 695 | goto bad4; |
01acbfa1 | 696 | ASSERT( tpcb->tp_nlproto->nlp_afamily == tpcb->tp_domain); |
c32c2ec1 | 697 | |
01acbfa1 | 698 | /* nothing to do for iso case */ |
c32c2ec1 KS |
699 | if( dom == AF_INET ) |
700 | sotoinpcb(so)->inp_ppcb = (caddr_t) tpcb; | |
c32c2ec1 KS |
701 | |
702 | return 0; | |
703 | ||
704 | bad4: | |
705 | IFDEBUG(D_CONN) | |
706 | printf("BAD4 in tp_attach, so 0x%x\n", so); | |
707 | ENDDEBUG | |
708 | tp_freeref(tpcb->tp_refp); | |
709 | ||
710 | bad3: | |
711 | IFDEBUG(D_CONN) | |
712 | printf("BAD3 in tp_attach, so 0x%x\n", so); | |
713 | ENDDEBUG | |
714 | ||
a50e2bc0 | 715 | free((caddr_t)tpcb, M_PCB); /* never a cluster */ |
c32c2ec1 KS |
716 | |
717 | bad2: | |
718 | IFDEBUG(D_CONN) | |
719 | printf("BAD2 in tp_attach, so 0x%x\n", so); | |
720 | ENDDEBUG | |
721 | so->so_pcb = 0; | |
c32c2ec1 | 722 | |
a50e2bc0 | 723 | /*bad:*/ |
c32c2ec1 KS |
724 | IFDEBUG(D_CONN) |
725 | printf("BAD in tp_attach, so 0x%x\n", so); | |
726 | ENDDEBUG | |
727 | return error; | |
728 | } | |
729 | ||
730 | /* | |
731 | * NAME: tp_detach() | |
732 | * | |
733 | * CALLED FROM: | |
734 | * tp.trans, on behalf of a user close request | |
735 | * and when the reference timer goes off | |
736 | * (if the disconnect was initiated by the protocol entity | |
737 | * rather than by the user) | |
738 | * | |
739 | * FUNCTION and ARGUMENTS: | |
740 | * remove the tpcb structure from the list of active or | |
741 | * partially active connections, recycle all the mbufs | |
742 | * associated with the pcb, ref structure, sockbufs, etc. | |
743 | * Only free the ref structure if you know that a ref timer | |
744 | * wasn't set for this tpcb. | |
745 | * | |
746 | * RETURNS: Nada | |
747 | * | |
748 | * SIDE EFFECTS: | |
749 | * | |
750 | * NOTES: | |
751 | * tp_soisdisconnected() was already when this is called | |
752 | */ | |
753 | void | |
754 | tp_detach(tpcb) | |
755 | register struct tp_pcb *tpcb; | |
756 | { | |
98af392b | 757 | void tp_freeref(), tp_rsyflush(); |
c32c2ec1 KS |
758 | register struct socket *so = tpcb->tp_sock; |
759 | ||
760 | IFDEBUG(D_CONN) | |
a50e2bc0 KS |
761 | printf("tp_detach(tpcb 0x%x, so 0x%x)\n", |
762 | tpcb,so); | |
c32c2ec1 KS |
763 | ENDDEBUG |
764 | IFTRACE(D_CONN) | |
765 | tptraceTPCB(TPPTmisc, "tp_detach tpcb so lsufx", | |
7b25382f | 766 | tpcb, so, *(u_short *)(tpcb->tp_lsuffix), 0); |
c32c2ec1 KS |
767 | ENDTRACE |
768 | ||
3c642c63 KS |
769 | IFDEBUG(D_CONN) |
770 | printf("so_snd at 0x%x so_rcv at 0x%x\n", &so->so_snd, &so->so_rcv); | |
771 | dump_mbuf(so->so_snd.sb_mb, "so_snd at detach "); | |
772 | printf("about to call LL detach, nlproto 0x%x, nl_detach 0x%x\n", | |
773 | tpcb->tp_nlproto, tpcb->tp_nlproto->nlp_pcbdetach); | |
774 | ENDDEBUG | |
775 | ||
01acbfa1 KS |
776 | if (tpcb->tp_Xsnd.sb_mb) { |
777 | printf("Unsent Xdata on detach; would panic"); | |
778 | sbflush(&tpcb->tp_Xsnd); | |
779 | } | |
3c642c63 KS |
780 | if (tpcb->tp_ucddata) |
781 | m_freem(tpcb->tp_ucddata); | |
782 | ||
98af392b KS |
783 | IFDEBUG(D_CONN) |
784 | printf("reassembly info cnt %d rsyq 0x%x\n", | |
785 | tpcb->tp_rsycnt, tpcb->tp_rsyq); | |
786 | ENDDEBUG | |
787 | if (tpcb->tp_rsyq) | |
788 | tp_rsyflush(tpcb); | |
789 | ||
fab7bc7c KS |
790 | if (tpcb->tp_next) { |
791 | remque(tpcb); | |
792 | tpcb->tp_next = tpcb->tp_prev = 0; | |
793 | } | |
794 | tpcb->tp_notdetached = 0; | |
795 | ||
c32c2ec1 KS |
796 | IFDEBUG(D_CONN) |
797 | printf("calling (...nlproto->...)(0x%x, so 0x%x)\n", | |
f15f73d2 | 798 | tpcb->tp_npcb, so); |
c32c2ec1 KS |
799 | printf("so 0x%x so_head 0x%x, qlen %d q0len %d qlimit %d\n", |
800 | so, so->so_head, | |
801 | so->so_q0len, so->so_qlen, so->so_qlimit); | |
802 | ENDDEBUG | |
803 | ||
f15f73d2 | 804 | (tpcb->tp_nlproto->nlp_pcbdetach)(tpcb->tp_npcb); |
01acbfa1 | 805 | /* does an so->so_pcb = 0; sofree(so) */ |
a50e2bc0 | 806 | |
c32c2ec1 KS |
807 | IFDEBUG(D_CONN) |
808 | printf("after xxx_pcbdetach\n"); | |
809 | ENDDEBUG | |
810 | ||
fab7bc7c KS |
811 | if (tpcb->tp_state == TP_LISTENING) { |
812 | register struct tp_pcb **tt; | |
813 | for (tt = &tp_listeners; *tt; tt = &((*tt)->tp_nextlisten)) | |
814 | if (*tt == tpcb) | |
815 | break; | |
816 | if (*tt) | |
817 | *tt = tpcb->tp_nextlisten; | |
818 | else | |
819 | printf("tp_detach from listen: should panic\n"); | |
820 | } | |
3a2fbed9 | 821 | if (tpcb->tp_refp && tpcb->tp_refp->tpr_state == REF_OPENING ) { |
c32c2ec1 KS |
822 | /* no connection existed here so no reference timer will be called */ |
823 | IFDEBUG(D_CONN) | |
824 | printf("SETTING ref %d, 0x%x to REF_FREE\n", tpcb->tp_lref, | |
825 | tpcb->tp_refp - &tp_ref[0]); | |
826 | ENDDEBUG | |
827 | ||
828 | tp_freeref(tpcb->tp_refp); | |
829 | } | |
01acbfa1 | 830 | #ifdef TP_PERF_MEAS |
c32c2ec1 KS |
831 | /* |
832 | * Get rid of the cluster mbuf allocated for performance measurements, if | |
833 | * there is one. Note that tpcb->tp_perf_on says nothing about whether or | |
834 | * not a cluster mbuf was allocated, so you have to check for a pointer | |
835 | * to one (that is, we need the TP_PERF_MEASs around the following section | |
836 | * of code, not the IFPERFs) | |
837 | */ | |
3c642c63 | 838 | if (tpcb->tp_p_mbuf) { |
a50e2bc0 KS |
839 | register struct mbuf *m = tpcb->tp_p_mbuf; |
840 | struct mbuf *n; | |
c32c2ec1 KS |
841 | IFDEBUG(D_PERF_MEAS) |
842 | printf("freeing tp_p_meas 0x%x ", tpcb->tp_p_meas); | |
c32c2ec1 | 843 | ENDDEBUG |
a50e2bc0 KS |
844 | do { |
845 | MFREE(m, n); | |
846 | m = n; | |
847 | } while (n); | |
848 | tpcb->tp_p_meas = 0; | |
849 | tpcb->tp_p_mbuf = 0; | |
c32c2ec1 KS |
850 | } |
851 | #endif TP_PERF_MEAS | |
852 | ||
853 | IFDEBUG(D_CONN) | |
a50e2bc0 | 854 | printf( "end of detach, NOT single, tpcb 0x%x\n", tpcb); |
c32c2ec1 | 855 | ENDDEBUG |
a50e2bc0 | 856 | /* free((caddr_t)tpcb, M_PCB); WHere to put this ? */ |
c32c2ec1 | 857 | } |
f2ae1840 KS |
858 | |
859 | struct que { | |
860 | struct tp_pcb *next; | |
861 | struct tp_pcb *prev; | |
862 | } tp_bound_pcbs = | |
863 | {(struct tp_pcb *)&tp_bound_pcbs, (struct tp_pcb *)&tp_bound_pcbs}; | |
864 | ||
865 | u_short tp_unique; | |
866 | ||
867 | tp_tselinuse(tlen, tsel, siso, reuseaddr) | |
868 | caddr_t tsel; | |
869 | register struct sockaddr_iso *siso; | |
870 | { | |
871 | struct tp_pcb *b = tp_bound_pcbs.next, *l = tp_listeners; | |
872 | register struct tp_pcb *t; | |
873 | ||
874 | for (;;) { | |
875 | if (b != (struct tp_pcb *)&tp_bound_pcbs) { | |
876 | t = b; b = t->tp_next; | |
877 | } else if (l) { | |
878 | t = l; l = t->tp_nextlisten; | |
879 | } else | |
880 | break; | |
881 | if (tlen == t->tp_lsuffixlen && bcmp(tsel, t->tp_lsuffix, tlen) == 0) { | |
882 | if (t->tp_flags & TPF_GENERAL_ADDR) { | |
883 | if (siso == 0 || reuseaddr == 0) | |
884 | return 1; | |
885 | } else if (siso) { | |
886 | if (siso->siso_family == t->tp_domain && | |
887 | t->tp_nlproto->nlp_cmpnetaddr(t->tp_npcb, siso, TP_LOCAL)) | |
888 | return 1; | |
889 | } else if (reuseaddr == 0) | |
890 | return 1; | |
891 | } | |
892 | } | |
893 | return 0; | |
894 | ||
895 | } | |
896 | ||
897 | ||
898 | tp_pcbbind(tpcb, nam) | |
899 | register struct tp_pcb *tpcb; | |
900 | register struct mbuf *nam; | |
901 | { | |
902 | register struct sockaddr_iso *siso = 0; | |
903 | int tlen = 0, wrapped = 0; | |
904 | caddr_t tsel; | |
905 | u_short tutil; | |
906 | ||
907 | if (tpcb->tp_state != TP_CLOSED) | |
908 | return (EINVAL); | |
909 | if (nam) { | |
910 | siso = mtod(nam, struct sockaddr_iso *); | |
911 | switch (siso->siso_family) { | |
912 | default: | |
913 | return (EAFNOSUPPORT); | |
914 | #ifdef ISO | |
915 | case AF_ISO: | |
916 | tlen = siso->siso_tlen; | |
917 | tsel = TSEL(siso); | |
918 | if (siso->siso_nlen == 0) | |
919 | siso = 0; | |
920 | break; | |
921 | #endif | |
922 | #ifdef INET | |
923 | case AF_INET: | |
924 | tsel = (caddr_t)&tutil; | |
925 | if (tutil = ((struct sockaddr_in *)siso)->sin_port) { | |
926 | tlen = 2; | |
927 | } | |
928 | if (((struct sockaddr_in *)siso)->sin_addr.s_addr == 0) | |
929 | siso = 0; | |
930 | } | |
931 | #endif | |
932 | } | |
933 | if (tpcb->tp_lsuffixlen == 0) { | |
934 | if (tlen) { | |
01acbfa1 | 935 | if (tp_tselinuse(tlen, tsel, siso, |
f2ae1840 KS |
936 | tpcb->tp_sock->so_options & SO_REUSEADDR)) |
937 | return (EINVAL); | |
938 | } else for (tsel = (caddr_t)&tp_unique, tlen = 2;;){ | |
939 | if (tp_unique++ < ISO_PORT_RESERVED || | |
940 | tp_unique > ISO_PORT_USERRESERVED) { | |
941 | if (wrapped++) | |
942 | return ESRCH; | |
943 | tp_unique = ISO_PORT_RESERVED; | |
944 | } | |
01acbfa1 | 945 | if (tp_tselinuse(tlen, tsel, siso, 0) == 0) |
f2ae1840 KS |
946 | break; |
947 | } | |
948 | bcopy(tsel, tpcb->tp_lsuffix, (tpcb->tp_lsuffixlen = tlen)); | |
949 | insque(tpcb, &tp_bound_pcbs); | |
950 | } else { | |
951 | if (tlen || siso == 0) | |
952 | return (EINVAL); | |
953 | } | |
954 | if (siso == 0) { | |
955 | tpcb->tp_flags |= TPF_GENERAL_ADDR; | |
956 | return (0); | |
957 | } | |
958 | return tpcb->tp_nlproto->nlp_pcbbind(tpcb->tp_npcb, nam); | |
959 | } |