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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 | * | |
f2ae1840 | 7 | * @(#)tp_pcb.c 7.13 (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 KS |
55 | #include "types.h" |
56 | #include "param.h" | |
57 | #include "mbuf.h" | |
58 | #include "socket.h" | |
59 | #include "socketvar.h" | |
60 | #include "protosw.h" | |
61 | #include "errno.h" | |
62 | #include "time.h" | |
a50e2bc0 KS |
63 | #include "argo_debug.h" |
64 | #include "tp_param.h" | |
65 | #include "tp_timer.h" | |
66 | #include "tp_ip.h" | |
67 | #include "tp_stat.h" | |
68 | #include "tp_pcb.h" | |
69 | #include "tp_tpdu.h" | |
70 | #include "tp_trace.h" | |
71 | #include "tp_meas.h" | |
72 | #include "tp_seq.h" | |
73 | #include "tp_clnp.h" | |
c32c2ec1 | 74 | |
c32c2ec1 KS |
75 | struct tp_param tp_param = { |
76 | 1, /* configured */ | |
77 | }; | |
78 | ||
79 | /* ticks are in units of: | |
80 | * 500 nano-fortnights ;-) or | |
81 | * 500 ms or | |
82 | * 1/2 second | |
83 | */ | |
84 | ||
85 | struct tp_conn_param tp_conn_param[] = { | |
86 | /* ISO_CLNS: TP4 CONNECTION LESS */ | |
87 | { | |
88 | TP_NRETRANS, /* short p_Nretrans; */ | |
89 | 20, /* 10 sec */ /* short p_dr_ticks; */ | |
90 | ||
91 | 20, /* 10 sec */ /* short p_cc_ticks; */ | |
92 | 20, /* 10 sec */ /* short p_dt_ticks; */ | |
93 | ||
94 | 40, /* 20 sec */ /* short p_x_ticks; */ | |
95 | 80, /* 40 sec */ /* short p_cr_ticks;*/ | |
96 | ||
97 | 240, /* 2 min */ /* short p_keepalive_ticks;*/ | |
98 | 10, /* 5 sec */ /* short p_sendack_ticks; */ | |
99 | ||
100 | 600, /* 5 min */ /* short p_ref_ticks; */ | |
101 | 360, /* 3 min */ /* short p_inact_ticks; */ | |
102 | ||
103 | (short) 100, /* short p_lcdtfract */ | |
104 | (short) TP_SOCKBUFSIZE, /* short p_winsize */ | |
105 | TP_TPDUSIZE, /* u_char p_tpdusize */ | |
106 | ||
107 | TPACK_WINDOW, /* 4 bits p_ack_strat */ | |
108 | TPRX_USE_CW | TPRX_FASTSTART, | |
109 | /* 4 bits p_rx_strat*/ | |
110 | TP_CLASS_4 | TP_CLASS_0,/* 5 bits p_class */ | |
111 | 1, /* 1 bit xtd format */ | |
112 | 1, /* 1 bit xpd service */ | |
113 | 1, /* 1 bit use_checksum */ | |
114 | 0, /* 1 bit use net xpd */ | |
115 | 0, /* 1 bit use rcc */ | |
116 | 0, /* 1 bit use efc */ | |
44f52ea5 | 117 | 1, /* no disc indications */ |
c32c2ec1 KS |
118 | 0, /* don't change params */ |
119 | ISO_CLNS, /* p_netservice */ | |
120 | }, | |
121 | /* IN_CLNS: TP4 CONNECTION LESS */ | |
122 | { | |
123 | TP_NRETRANS, /* short p_Nretrans; */ | |
124 | 20, /* 10 sec */ /* short p_dr_ticks; */ | |
125 | ||
126 | 20, /* 10 sec */ /* short p_cc_ticks; */ | |
127 | 20, /* 10 sec */ /* short p_dt_ticks; */ | |
128 | ||
129 | 40, /* 20 sec */ /* short p_x_ticks; */ | |
130 | 80, /* 40 sec */ /* short p_cr_ticks;*/ | |
131 | ||
132 | 240, /* 2 min */ /* short p_keepalive_ticks;*/ | |
133 | 10, /* 5 sec */ /* short p_sendack_ticks; */ | |
134 | ||
135 | 600, /* 5 min */ /* short p_ref_ticks; */ | |
136 | 360, /* 3 min */ /* short p_inact_ticks; */ | |
137 | ||
138 | (short) 100, /* short p_lcdtfract */ | |
139 | (short) TP_SOCKBUFSIZE, /* short p_winsize */ | |
140 | TP_TPDUSIZE, /* u_char p_tpdusize */ | |
141 | ||
142 | TPACK_WINDOW, /* 4 bits p_ack_strat */ | |
143 | TPRX_USE_CW | TPRX_FASTSTART, | |
144 | /* 4 bits p_rx_strat*/ | |
145 | TP_CLASS_4, /* 5 bits p_class */ | |
146 | 1, /* 1 bit xtd format */ | |
147 | 1, /* 1 bit xpd service */ | |
148 | 1, /* 1 bit use_checksum */ | |
149 | 0, /* 1 bit use net xpd */ | |
150 | 0, /* 1 bit use rcc */ | |
151 | 0, /* 1 bit use efc */ | |
44f52ea5 | 152 | 1, /* no disc indications */ |
c32c2ec1 KS |
153 | 0, /* don't change params */ |
154 | IN_CLNS, /* p_netservice */ | |
155 | }, | |
156 | /* ISO_CONS: TP0 CONNECTION MODE */ | |
157 | { | |
158 | TP_NRETRANS, /* short p_Nretrans; */ | |
159 | 0, /* n/a */ /* short p_dr_ticks; */ | |
160 | ||
161 | 40, /* 20 sec */ /* short p_cc_ticks; */ | |
162 | 0, /* n/a */ /* short p_dt_ticks; */ | |
163 | ||
164 | 0, /* n/a */ /* short p_x_ticks; */ | |
165 | 360, /* 3 min */ /* short p_cr_ticks;*/ | |
166 | ||
167 | 0, /* n/a */ /* short p_keepalive_ticks;*/ | |
168 | 0, /* n/a */ /* short p_sendack_ticks; */ | |
169 | ||
170 | 600, /* for cr/cc to clear *//* short p_ref_ticks; */ | |
171 | 0, /* n/a */ /* short p_inact_ticks; */ | |
172 | ||
173 | /* Use tp4 defaults just in case the user changes ONLY | |
174 | * the class | |
175 | */ | |
176 | (short) 100, /* short p_lcdtfract */ | |
177 | (short) TP0_SOCKBUFSIZE, /* short p_winsize */ | |
178 | TP0_TPDUSIZE, /* 8 bits p_tpdusize */ | |
179 | ||
180 | 0, /* 4 bits p_ack_strat */ | |
181 | 0, /* 4 bits p_rx_strat*/ | |
182 | TP_CLASS_0, /* 5 bits p_class */ | |
183 | 0, /* 1 bit xtd format */ | |
184 | 0, /* 1 bit xpd service */ | |
185 | 0, /* 1 bit use_checksum */ | |
186 | 0, /* 1 bit use net xpd */ | |
187 | 0, /* 1 bit use rcc */ | |
188 | 0, /* 1 bit use efc */ | |
189 | 0, /* no disc indications */ | |
190 | 0, /* don't change params */ | |
191 | ISO_CONS, /* p_netservice */ | |
192 | }, | |
193 | /* ISO_COSNS: TP4 CONNECTION LESS SERVICE over CONSNS */ | |
194 | { | |
195 | TP_NRETRANS, /* short p_Nretrans; */ | |
196 | 40, /* 20 sec */ /* short p_dr_ticks; */ | |
197 | ||
198 | 40, /* 20 sec */ /* short p_cc_ticks; */ | |
199 | 80, /* 40 sec */ /* short p_dt_ticks; */ | |
200 | ||
201 | 120, /* 1 min */ /* short p_x_ticks; */ | |
202 | 360, /* 3 min */ /* short p_cr_ticks;*/ | |
203 | ||
204 | 360, /* 3 min */ /* short p_keepalive_ticks;*/ | |
205 | 20, /* 10 sec */ /* short p_sendack_ticks; */ | |
206 | ||
207 | 600, /* 5 min */ /* short p_ref_ticks; */ | |
208 | 480, /* 4 min */ /* short p_inact_ticks; */ | |
209 | ||
210 | (short) 100, /* short p_lcdtfract */ | |
211 | (short) TP0_SOCKBUFSIZE, /* short p_winsize */ | |
212 | TP0_TPDUSIZE, /* u_char p_tpdusize */ | |
213 | ||
214 | TPACK_WINDOW, /* 4 bits p_ack_strat */ | |
215 | TPRX_USE_CW , /* No fast start */ | |
216 | /* 4 bits p_rx_strat*/ | |
217 | TP_CLASS_4 | TP_CLASS_0,/* 5 bits p_class */ | |
218 | 0, /* 1 bit xtd format */ | |
219 | 1, /* 1 bit xpd service */ | |
220 | 1, /* 1 bit use_checksum */ | |
221 | 0, /* 1 bit use net xpd */ | |
222 | 0, /* 1 bit use rcc */ | |
223 | 0, /* 1 bit use efc */ | |
224 | 0, /* no disc indications */ | |
225 | 0, /* don't change params */ | |
226 | ISO_COSNS, /* p_netservice */ | |
227 | }, | |
228 | }; | |
229 | ||
230 | #ifdef INET | |
231 | int in_putnetaddr(); | |
232 | int in_getnetaddr(); | |
63f88aec | 233 | int in_cmpnetaddr(); |
c32c2ec1 KS |
234 | int in_putsufx(); |
235 | int in_getsufx(); | |
236 | int in_recycle_tsuffix(); | |
237 | int tpip_mtu(); | |
238 | int in_pcbbind(); | |
239 | int in_pcbconnect(); | |
240 | int in_pcbdisconnect(); | |
241 | int in_pcbdetach(); | |
242 | int in_pcballoc(); | |
243 | int tpip_output(); | |
244 | int tpip_output_dg(); | |
245 | struct inpcb tp_inpcb; | |
246 | #endif INET | |
247 | #ifdef ISO | |
248 | int iso_putnetaddr(); | |
249 | int iso_getnetaddr(); | |
63f88aec | 250 | int iso_cmpnetaddr(); |
c32c2ec1 KS |
251 | int iso_putsufx(); |
252 | int iso_getsufx(); | |
253 | int iso_recycle_tsuffix(); | |
254 | int tpclnp_mtu(); | |
255 | int iso_pcbbind(); | |
256 | int iso_pcbconnect(); | |
257 | int iso_pcbdisconnect(); | |
258 | int iso_pcbdetach(); | |
259 | int iso_pcballoc(); | |
260 | int tpclnp_output(); | |
261 | int tpclnp_output_dg(); | |
262 | int iso_nlctloutput(); | |
263 | struct isopcb tp_isopcb; | |
264 | #endif ISO | |
194a383a | 265 | #ifdef TPCONS |
c32c2ec1 KS |
266 | int iso_putnetaddr(); |
267 | int iso_getnetaddr(); | |
63f88aec | 268 | int iso_cmpnetaddr(); |
c32c2ec1 KS |
269 | int iso_putsufx(); |
270 | int iso_getsufx(); | |
271 | int iso_recycle_tsuffix(); | |
c32c2ec1 | 272 | int iso_pcbbind(); |
194a383a | 273 | int tpcons_pcbconnect(); |
80a3ea26 | 274 | int tpclnp_mtu(); |
c32c2ec1 KS |
275 | int iso_pcbdisconnect(); |
276 | int iso_pcbdetach(); | |
277 | int iso_pcballoc(); | |
278 | int tpcons_output(); | |
c32c2ec1 | 279 | struct isopcb tp_isopcb; |
194a383a | 280 | #endif TPCONS |
c32c2ec1 | 281 | |
a50e2bc0 | 282 | |
c32c2ec1 KS |
283 | struct nl_protosw nl_protosw[] = { |
284 | /* ISO_CLNS */ | |
285 | #ifdef ISO | |
63f88aec | 286 | { AF_ISO, iso_putnetaddr, iso_getnetaddr, iso_cmpnetaddr, |
c32c2ec1 KS |
287 | iso_putsufx, iso_getsufx, |
288 | iso_recycle_tsuffix, | |
289 | tpclnp_mtu, iso_pcbbind, iso_pcbconnect, | |
290 | iso_pcbdisconnect, iso_pcbdetach, | |
291 | iso_pcballoc, | |
292 | tpclnp_output, tpclnp_output_dg, iso_nlctloutput, | |
293 | (caddr_t) &tp_isopcb, | |
294 | }, | |
a50e2bc0 KS |
295 | #else |
296 | { 0 }, | |
c32c2ec1 KS |
297 | #endif ISO |
298 | /* IN_CLNS */ | |
299 | #ifdef INET | |
63f88aec | 300 | { AF_INET, in_putnetaddr, in_getnetaddr, in_cmpnetaddr, |
c32c2ec1 KS |
301 | in_putsufx, in_getsufx, |
302 | in_recycle_tsuffix, | |
303 | tpip_mtu, in_pcbbind, in_pcbconnect, | |
304 | in_pcbdisconnect, in_pcbdetach, | |
305 | in_pcballoc, | |
306 | tpip_output, tpip_output_dg, /* nl_ctloutput */ NULL, | |
307 | (caddr_t) &tp_inpcb, | |
308 | }, | |
a50e2bc0 KS |
309 | #else |
310 | { 0 }, | |
c32c2ec1 KS |
311 | #endif INET |
312 | /* ISO_CONS */ | |
194a383a | 313 | #if defined(ISO) && defined(TPCONS) |
63f88aec | 314 | { AF_ISO, iso_putnetaddr, iso_getnetaddr, iso_cmpnetaddr, |
c32c2ec1 KS |
315 | iso_putsufx, iso_getsufx, |
316 | iso_recycle_tsuffix, | |
80a3ea26 | 317 | tpclnp_mtu, iso_pcbbind, tpcons_pcbconnect, |
c32c2ec1 KS |
318 | iso_pcbdisconnect, iso_pcbdetach, |
319 | iso_pcballoc, | |
194a383a | 320 | tpcons_output, tpcons_output, iso_nlctloutput, |
c32c2ec1 KS |
321 | (caddr_t) &tp_isopcb, |
322 | }, | |
a50e2bc0 KS |
323 | #else |
324 | { 0 }, | |
325 | #endif ISO_CONS | |
326 | /* End of protosw marker */ | |
327 | { 0 } | |
c32c2ec1 KS |
328 | }; |
329 | ||
330 | /* | |
331 | * NAME: tp_init() | |
332 | * | |
333 | * CALLED FROM: | |
334 | * autoconf through the protosw structure | |
335 | * | |
336 | * FUNCTION: | |
337 | * initialize tp machine | |
338 | * | |
339 | * RETURNS: Nada | |
340 | * | |
341 | * SIDE EFFECTS: | |
342 | * | |
343 | * NOTES: | |
344 | */ | |
a50e2bc0 | 345 | int |
c32c2ec1 KS |
346 | tp_init() |
347 | { | |
348 | static int init_done=0; | |
349 | void tp_timerinit(); | |
350 | ||
351 | if (init_done++) | |
a50e2bc0 | 352 | return 0; |
c32c2ec1 | 353 | |
c32c2ec1 KS |
354 | |
355 | /* FOR INET */ | |
356 | tp_inpcb.inp_next = tp_inpcb.inp_prev = &tp_inpcb; | |
357 | /* FOR ISO */ | |
358 | tp_isopcb.isop_next = tp_isopcb.isop_prev = &tp_isopcb; | |
359 | ||
620f4252 KS |
360 | tp_start_win = 2; |
361 | ||
c32c2ec1 KS |
362 | tp_timerinit(); |
363 | bzero((caddr_t)&tp_stat, sizeof(struct tp_stat)); | |
a50e2bc0 | 364 | return 0; |
c32c2ec1 KS |
365 | } |
366 | ||
367 | /* | |
368 | * NAME: tp_soisdisconnecting() | |
369 | * | |
370 | * CALLED FROM: | |
371 | * tp.trans | |
372 | * | |
373 | * FUNCTION and ARGUMENTS: | |
374 | * Set state of the socket (so) to reflect that fact that we're disconnectING | |
375 | * | |
376 | * RETURNS: Nada | |
377 | * | |
378 | * SIDE EFFECTS: | |
379 | * | |
380 | * NOTES: | |
381 | * This differs from the regular soisdisconnecting() in that the latter | |
382 | * also sets the SS_CANTRECVMORE and SS_CANTSENDMORE flags. | |
383 | * We don't want to set those flags because those flags will cause | |
384 | * a SIGPIPE to be delivered in sosend() and we don't like that. | |
385 | * If anyone else is sleeping on this socket, wake 'em up. | |
386 | */ | |
387 | void | |
388 | tp_soisdisconnecting(so) | |
389 | register struct socket *so; | |
390 | { | |
44f52ea5 KS |
391 | soisdisconnecting(so); |
392 | so->so_state &= ~SS_CANTSENDMORE; | |
c32c2ec1 KS |
393 | IFPERF(sototpcb(so)) |
394 | register struct tp_pcb *tpcb = sototpcb(so); | |
395 | u_int fsufx, lsufx; | |
396 | ||
a50e2bc0 KS |
397 | bcopy ((caddr_t)tpcb->tp_fsuffix, (caddr_t)&fsufx, sizeof(u_int) ); |
398 | bcopy ((caddr_t)tpcb->tp_lsuffix, (caddr_t)&lsufx, sizeof(u_int) ); | |
c32c2ec1 | 399 | |
a50e2bc0 | 400 | tpmeas(tpcb->tp_lref, TPtime_close, &time, fsufx, lsufx, tpcb->tp_fref); |
c32c2ec1 KS |
401 | tpcb->tp_perf_on = 0; /* turn perf off */ |
402 | ENDPERF | |
403 | } | |
404 | ||
405 | ||
406 | /* | |
407 | * NAME: tp_soisdisconnected() | |
408 | * | |
409 | * CALLED FROM: | |
410 | * tp.trans | |
411 | * | |
412 | * FUNCTION and ARGUMENTS: | |
413 | * Set state of the socket (so) to reflect that fact that we're disconnectED | |
414 | * Set the state of the reference structure to closed, and | |
415 | * recycle the suffix. | |
416 | * Start a reference timer. | |
417 | * | |
418 | * RETURNS: Nada | |
419 | * | |
420 | * SIDE EFFECTS: | |
421 | * | |
422 | * NOTES: | |
423 | * This differs from the regular soisdisconnected() in that the latter | |
424 | * also sets the SS_CANTRECVMORE and SS_CANTSENDMORE flags. | |
425 | * We don't want to set those flags because those flags will cause | |
426 | * a SIGPIPE to be delivered in sosend() and we don't like that. | |
427 | * If anyone else is sleeping on this socket, wake 'em up. | |
428 | */ | |
429 | void | |
430 | tp_soisdisconnected(tpcb) | |
431 | register struct tp_pcb *tpcb; | |
432 | { | |
433 | register struct socket *so = tpcb->tp_sock; | |
434 | ||
44f52ea5 KS |
435 | soisdisconnecting(so); |
436 | so->so_state &= ~SS_CANTSENDMORE; | |
c32c2ec1 | 437 | IFPERF(sototpcb(so)) |
a50e2bc0 | 438 | register struct tp_pcb *ttpcb = sototpcb(so); |
c32c2ec1 KS |
439 | u_int fsufx, lsufx; |
440 | ||
441 | /* CHOKE */ | |
a50e2bc0 KS |
442 | bcopy ((caddr_t)ttpcb->tp_fsuffix, (caddr_t)&fsufx, sizeof(u_int) ); |
443 | bcopy ((caddr_t)ttpcb->tp_lsuffix, (caddr_t)&lsufx, sizeof(u_int) ); | |
c32c2ec1 | 444 | |
a50e2bc0 KS |
445 | tpmeas(ttpcb->tp_lref, TPtime_close, |
446 | &time, &lsufx, &fsufx, ttpcb->tp_fref); | |
c32c2ec1 KS |
447 | tpcb->tp_perf_on = 0; /* turn perf off */ |
448 | ENDPERF | |
449 | ||
450 | tpcb->tp_refp->tpr_state = REF_FROZEN; | |
451 | tp_recycle_tsuffix( tpcb ); | |
452 | tp_etimeout(tpcb->tp_refp, TM_reference, 0,0,0, (int)tpcb->tp_refer_ticks); | |
453 | } | |
454 | ||
455 | int tp_maxrefopen; /* highest reference # of the set of open tp connections */ | |
456 | ||
457 | /* | |
458 | * NAME: tp_freeref() | |
459 | * | |
460 | * CALLED FROM: | |
461 | * tp.trans when the reference timer goes off, and | |
462 | * from tp_attach() and tp_detach() when a tpcb is partially set up but not | |
463 | * set up enough to have a ref timer set for it, and it's discarded | |
464 | * due to some sort of error or an early close() | |
465 | * | |
466 | * FUNCTION and ARGUMENTS: | |
467 | * Frees the reference represented by (r) for re-use. | |
468 | * | |
469 | * RETURNS: Nothing | |
470 | * | |
471 | * SIDE EFFECTS: | |
472 | * | |
473 | * NOTES: better be called at clock priority !!!!! | |
474 | */ | |
475 | void | |
476 | tp_freeref(r) | |
477 | register struct tp_ref *r; | |
478 | { | |
479 | IFDEBUG(D_TIMER) | |
480 | printf("tp_freeref called for ref %d maxrefopen %d\n", | |
481 | r - tp_ref, tp_maxrefopen); | |
482 | ENDDEBUG | |
483 | IFTRACE(D_TIMER) | |
484 | tptrace(TPPTmisc, "tp_freeref ref tp_maxrefopen", | |
485 | r - tp_ref, tp_maxrefopen, 0, 0); | |
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; | |
492 | ||
493 | r = &tp_ref[tp_maxrefopen]; | |
494 | ||
495 | while( tp_maxrefopen > 0 ) { | |
496 | if(r->tpr_state ) | |
497 | break; | |
498 | tp_maxrefopen--; | |
499 | r--; | |
500 | } | |
501 | IFDEBUG(D_TIMER) | |
502 | printf("tp_freeref ends w/ maxrefopen %d\n", tp_maxrefopen); | |
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 | */ | |
524 | static RefNum | |
525 | tp_getref(tpcb) | |
526 | register struct tp_pcb *tpcb; | |
527 | { | |
4a43bed3 | 528 | register struct tp_ref *r = tp_ref; /* tp_ref[0] is never used */ |
c32c2ec1 KS |
529 | register int i=1; |
530 | ||
c32c2ec1 | 531 | |
4a43bed3 KS |
532 | while ((++r)->tpr_state != REF_FREE) { |
533 | if (++i == N_TPREF) | |
c32c2ec1 | 534 | return TP_ENOREF; |
c32c2ec1 KS |
535 | } |
536 | r->tpr_state = REF_OPENING; | |
537 | if (tp_maxrefopen < i) | |
538 | tp_maxrefopen = i; | |
539 | r->tpr_pcb = tpcb; | |
540 | tpcb->tp_refp = r; | |
541 | ||
542 | return i; | |
543 | } | |
544 | ||
545 | /* | |
546 | * NAME: tp_attach() | |
547 | * | |
548 | * CALLED FROM: | |
549 | * tp_usrreq, PRU_ATTACH | |
550 | * | |
551 | * FUNCTION and ARGUMENTS: | |
552 | * given a socket (so) and a protocol family (dom), allocate a tpcb | |
553 | * and ref structure, initialize everything in the structures that | |
554 | * needs to be initialized. | |
555 | * | |
556 | * RETURN VALUE: | |
557 | * 0 ok | |
558 | * EINVAL if DEBUG(X) in is on and a disaster has occurred | |
559 | * ENOPROTOOPT if TP hasn't been configured or if the | |
560 | * socket wasn't created with tp as its protocol | |
561 | * EISCONN if this socket is already part of a connection | |
562 | * ETOOMANYREFS if ran out of tp reference numbers. | |
563 | * E* whatever error is returned from soreserve() | |
564 | * for from the network-layer pcb allocation routine | |
565 | * | |
566 | * SIDE EFFECTS: | |
567 | * | |
568 | * NOTES: | |
569 | */ | |
a50e2bc0 | 570 | tp_attach(so, dom) |
c32c2ec1 KS |
571 | struct socket *so; |
572 | int dom; | |
573 | { | |
574 | register struct tp_pcb *tpcb; | |
c32c2ec1 KS |
575 | int error; |
576 | int protocol = so->so_proto->pr_protocol; | |
577 | extern struct tp_conn_param tp_conn_param[]; | |
578 | ||
579 | IFDEBUG(D_CONN) | |
580 | printf("tp_attach:dom 0x%x so 0x%x ", dom, so); | |
581 | ENDDEBUG | |
582 | IFTRACE(D_CONN) | |
583 | tptrace(TPPTmisc, "tp_attach:dom so", dom, so, 0, 0); | |
584 | ENDTRACE | |
585 | if ( ! tp_param.tpp_configed ) { | |
586 | error = ENOPROTOOPT; /* protocol not available */ | |
587 | goto bad2; | |
588 | } | |
589 | ||
590 | if (so->so_pcb != NULL) { | |
591 | return EISCONN; /* socket already part of a connection*/ | |
592 | } | |
593 | ||
594 | error = soreserve(so, TP_SOCKBUFSIZE, TP_SOCKBUFSIZE); | |
595 | /* later an ioctl will allow reallocation IF still in closed state */ | |
596 | ||
597 | if (error) | |
598 | goto bad2; | |
599 | ||
a50e2bc0 KS |
600 | MALLOC(tpcb, struct tp_pcb *, sizeof(*tpcb), M_PCB, M_NOWAIT); |
601 | if (tpcb == NULL) { | |
c32c2ec1 KS |
602 | error = ENOBUFS; |
603 | goto bad2; | |
604 | } | |
c32c2ec1 KS |
605 | bzero( (caddr_t)tpcb, sizeof (struct tp_pcb) ); |
606 | ||
c32c2ec1 KS |
607 | if ( ((tpcb->tp_lref = tp_getref(tpcb)) & TP_ENOREF) != 0 ) { |
608 | error = ETOOMANYREFS; | |
609 | goto bad3; | |
610 | } | |
611 | tpcb->tp_sock = so; | |
612 | tpcb->tp_domain = dom; | |
613 | if (protocol<ISOPROTO_TP4) { | |
614 | tpcb->tp_netservice = ISO_CONS; | |
615 | tpcb->tp_snduna = (SeqNum) -1;/* kludge so the pseudo-ack from the CR/CC | |
616 | * will generate correct fake-ack values | |
617 | */ | |
618 | } else { | |
619 | tpcb->tp_netservice = (dom== AF_INET)?IN_CLNS:ISO_CLNS; | |
620 | /* the default */ | |
621 | } | |
622 | tpcb->_tp_param = tp_conn_param[tpcb->tp_netservice]; | |
623 | ||
624 | tpcb->tp_cong_win = 1; | |
625 | tpcb->tp_state = TP_CLOSED; | |
626 | tpcb->tp_vers = TP_VERSION; | |
627 | ||
628 | /* Spec says default is 128 octets, | |
629 | * that is, if the tpdusize argument never appears, use 128. | |
630 | * As the initiator, we will always "propose" the 2048 | |
631 | * size, that is, we will put this argument in the CR | |
632 | * always, but accept what the other side sends on the CC. | |
633 | * If the initiator sends us something larger on a CR, | |
634 | * we'll respond w/ this. | |
635 | * Our maximum is 4096. See tp_chksum.c comments. | |
636 | */ | |
637 | tpcb->tp_l_tpdusize = 1 << tpcb->tp_tpdusize; | |
638 | ||
639 | tpcb->tp_seqmask = TP_NML_FMT_MASK; | |
640 | tpcb->tp_seqbit = TP_NML_FMT_BIT; | |
641 | tpcb->tp_seqhalf = tpcb->tp_seqbit >> 1; | |
642 | tpcb->tp_sndhiwat = (SeqNum) - 1; /* a kludge but it works */ | |
643 | tpcb->tp_s_subseq = 0; | |
644 | ||
645 | /* attach to a network-layer protoswitch */ | |
646 | /* new way */ | |
647 | tpcb->tp_nlproto = & nl_protosw[tpcb->tp_netservice]; | |
648 | ASSERT( tpcb->tp_nlproto->nlp_afamily == tpcb->tp_domain); | |
649 | #ifdef notdef | |
650 | /* OLD WAY */ | |
651 | /* TODO: properly, this search would be on the basis of | |
652 | * domain,netservice or just netservice only (if you have | |
653 | * IN_CLNS, ISO_CLNS, and ISO_CONS) | |
654 | */ | |
655 | tpcb->tp_nlproto = nl_protosw; | |
656 | while(tpcb->tp_nlproto->nlp_afamily != tpcb->tp_domain ) { | |
657 | if( tpcb->tp_nlproto->nlp_afamily == 0 ) { | |
658 | error = EAFNOSUPPORT; | |
659 | goto bad4; | |
660 | } | |
661 | tpcb->tp_nlproto ++; | |
662 | } | |
663 | #endif notdef | |
664 | ||
665 | /* xx_pcballoc sets so_pcb */ | |
666 | if ( error = (tpcb->tp_nlproto->nlp_pcballoc) ( | |
667 | so, tpcb->tp_nlproto->nlp_pcblist ) ) { | |
668 | goto bad4; | |
669 | } | |
670 | ||
671 | if( dom == AF_INET ) | |
672 | sotoinpcb(so)->inp_ppcb = (caddr_t) tpcb; | |
673 | /* nothing to do for iso case */ | |
674 | ||
f15f73d2 KS |
675 | tpcb->tp_npcb = so->so_pcb; |
676 | so->so_pcb = (caddr_t) tpcb; | |
c32c2ec1 KS |
677 | |
678 | return 0; | |
679 | ||
680 | bad4: | |
681 | IFDEBUG(D_CONN) | |
682 | printf("BAD4 in tp_attach, so 0x%x\n", so); | |
683 | ENDDEBUG | |
684 | tp_freeref(tpcb->tp_refp); | |
685 | ||
686 | bad3: | |
687 | IFDEBUG(D_CONN) | |
688 | printf("BAD3 in tp_attach, so 0x%x\n", so); | |
689 | ENDDEBUG | |
690 | ||
a50e2bc0 | 691 | free((caddr_t)tpcb, M_PCB); /* never a cluster */ |
c32c2ec1 KS |
692 | |
693 | bad2: | |
694 | IFDEBUG(D_CONN) | |
695 | printf("BAD2 in tp_attach, so 0x%x\n", so); | |
696 | ENDDEBUG | |
697 | so->so_pcb = 0; | |
c32c2ec1 | 698 | |
a50e2bc0 | 699 | /*bad:*/ |
c32c2ec1 KS |
700 | IFDEBUG(D_CONN) |
701 | printf("BAD in tp_attach, so 0x%x\n", so); | |
702 | ENDDEBUG | |
703 | return error; | |
704 | } | |
705 | ||
706 | /* | |
707 | * NAME: tp_detach() | |
708 | * | |
709 | * CALLED FROM: | |
710 | * tp.trans, on behalf of a user close request | |
711 | * and when the reference timer goes off | |
712 | * (if the disconnect was initiated by the protocol entity | |
713 | * rather than by the user) | |
714 | * | |
715 | * FUNCTION and ARGUMENTS: | |
716 | * remove the tpcb structure from the list of active or | |
717 | * partially active connections, recycle all the mbufs | |
718 | * associated with the pcb, ref structure, sockbufs, etc. | |
719 | * Only free the ref structure if you know that a ref timer | |
720 | * wasn't set for this tpcb. | |
721 | * | |
722 | * RETURNS: Nada | |
723 | * | |
724 | * SIDE EFFECTS: | |
725 | * | |
726 | * NOTES: | |
727 | * tp_soisdisconnected() was already when this is called | |
728 | */ | |
729 | void | |
730 | tp_detach(tpcb) | |
731 | register struct tp_pcb *tpcb; | |
732 | { | |
733 | void tp_freeref(); | |
734 | register struct socket *so = tpcb->tp_sock; | |
735 | ||
736 | IFDEBUG(D_CONN) | |
a50e2bc0 KS |
737 | printf("tp_detach(tpcb 0x%x, so 0x%x)\n", |
738 | tpcb,so); | |
c32c2ec1 KS |
739 | ENDDEBUG |
740 | IFTRACE(D_CONN) | |
741 | tptraceTPCB(TPPTmisc, "tp_detach tpcb so lsufx", | |
7b25382f | 742 | tpcb, so, *(u_short *)(tpcb->tp_lsuffix), 0); |
c32c2ec1 KS |
743 | ENDTRACE |
744 | ||
745 | if (so->so_head) { | |
746 | if (!soqremque(so, 0) && !soqremque(so, 1)) | |
747 | panic("sofree dq"); | |
748 | so->so_head = 0; | |
749 | } | |
750 | ||
751 | IFDEBUG(D_CONN) | |
752 | printf("tp_detach(freeing RTC list snduna 0x%x rcvnxt 0x%x)\n", | |
753 | tpcb->tp_snduna_rtc, | |
754 | tpcb->tp_rcvnxt_rtc); | |
755 | ENDDEBUG | |
756 | ||
757 | #define FREE_RTC_LIST(XXX)\ | |
758 | { register struct tp_rtc *xxr = XXX, *xxs; while (xxr) {\ | |
759 | xxs = xxr->tprt_next;\ | |
760 | m_freem( xxr->tprt_data );\ | |
761 | m_free( dtom(xxr) ); xxr = xxs; }\ | |
762 | XXX = (struct tp_rtc *)0;\ | |
763 | } | |
764 | ||
765 | FREE_RTC_LIST( tpcb->tp_snduna_rtc ); | |
766 | tpcb->tp_sndhiwat_rtc = (struct tp_rtc *)0; | |
767 | ||
768 | FREE_RTC_LIST( tpcb->tp_rcvnxt_rtc ); | |
769 | ||
770 | #undef FREE_RTC_LIST | |
771 | ||
3c642c63 KS |
772 | IFDEBUG(D_CONN) |
773 | printf("so_snd at 0x%x so_rcv at 0x%x\n", &so->so_snd, &so->so_rcv); | |
774 | dump_mbuf(so->so_snd.sb_mb, "so_snd at detach "); | |
775 | printf("about to call LL detach, nlproto 0x%x, nl_detach 0x%x\n", | |
776 | tpcb->tp_nlproto, tpcb->tp_nlproto->nlp_pcbdetach); | |
777 | ENDDEBUG | |
778 | ||
779 | if (so->so_snd.sb_cc != 0) | |
780 | sbflush(&so->so_snd); | |
781 | if (tpcb->tp_Xrcv.sb_cc != 0) | |
782 | sbdrop(&tpcb->tp_Xrcv, (int)tpcb->tp_Xrcv.sb_cc); | |
783 | if (tpcb->tp_ucddata) | |
784 | m_freem(tpcb->tp_ucddata); | |
785 | ||
c32c2ec1 KS |
786 | IFDEBUG(D_CONN) |
787 | printf("calling (...nlproto->...)(0x%x, so 0x%x)\n", | |
f15f73d2 | 788 | tpcb->tp_npcb, so); |
c32c2ec1 KS |
789 | printf("so 0x%x so_head 0x%x, qlen %d q0len %d qlimit %d\n", |
790 | so, so->so_head, | |
791 | so->so_q0len, so->so_qlen, so->so_qlimit); | |
792 | ENDDEBUG | |
793 | ||
c32c2ec1 | 794 | |
f15f73d2 | 795 | (tpcb->tp_nlproto->nlp_pcbdetach)(tpcb->tp_npcb); |
a50e2bc0 KS |
796 | /* does an sofree(so) */ |
797 | ||
c32c2ec1 KS |
798 | IFDEBUG(D_CONN) |
799 | printf("after xxx_pcbdetach\n"); | |
800 | ENDDEBUG | |
801 | ||
802 | if( tpcb->tp_refp->tpr_state == REF_OPENING ) { | |
803 | /* no connection existed here so no reference timer will be called */ | |
804 | IFDEBUG(D_CONN) | |
805 | printf("SETTING ref %d, 0x%x to REF_FREE\n", tpcb->tp_lref, | |
806 | tpcb->tp_refp - &tp_ref[0]); | |
807 | ENDDEBUG | |
808 | ||
809 | tp_freeref(tpcb->tp_refp); | |
810 | } | |
811 | ||
a50e2bc0 KS |
812 | if (tpcb->tp_Xsnd.sb_mb) { |
813 | printf("Unsent Xdata on detach; would panic"); | |
814 | sbflush(&tpcb->tp_Xsnd); | |
815 | } | |
f15f73d2 | 816 | so->so_pcb = 0; |
c32c2ec1 KS |
817 | |
818 | /* | |
819 | * Get rid of the cluster mbuf allocated for performance measurements, if | |
820 | * there is one. Note that tpcb->tp_perf_on says nothing about whether or | |
821 | * not a cluster mbuf was allocated, so you have to check for a pointer | |
822 | * to one (that is, we need the TP_PERF_MEASs around the following section | |
823 | * of code, not the IFPERFs) | |
824 | */ | |
825 | #ifdef TP_PERF_MEAS | |
3c642c63 | 826 | if (tpcb->tp_p_mbuf) { |
a50e2bc0 KS |
827 | register struct mbuf *m = tpcb->tp_p_mbuf; |
828 | struct mbuf *n; | |
c32c2ec1 KS |
829 | IFDEBUG(D_PERF_MEAS) |
830 | printf("freeing tp_p_meas 0x%x ", tpcb->tp_p_meas); | |
c32c2ec1 | 831 | ENDDEBUG |
a50e2bc0 KS |
832 | do { |
833 | MFREE(m, n); | |
834 | m = n; | |
835 | } while (n); | |
836 | tpcb->tp_p_meas = 0; | |
837 | tpcb->tp_p_mbuf = 0; | |
c32c2ec1 KS |
838 | } |
839 | #endif TP_PERF_MEAS | |
840 | ||
841 | IFDEBUG(D_CONN) | |
a50e2bc0 | 842 | printf( "end of detach, NOT single, tpcb 0x%x\n", tpcb); |
c32c2ec1 | 843 | ENDDEBUG |
a50e2bc0 | 844 | /* free((caddr_t)tpcb, M_PCB); WHere to put this ? */ |
c32c2ec1 | 845 | } |
f2ae1840 KS |
846 | |
847 | struct que { | |
848 | struct tp_pcb *next; | |
849 | struct tp_pcb *prev; | |
850 | } tp_bound_pcbs = | |
851 | {(struct tp_pcb *)&tp_bound_pcbs, (struct tp_pcb *)&tp_bound_pcbs}; | |
852 | ||
853 | u_short tp_unique; | |
854 | ||
855 | tp_tselinuse(tlen, tsel, siso, reuseaddr) | |
856 | caddr_t tsel; | |
857 | register struct sockaddr_iso *siso; | |
858 | { | |
859 | struct tp_pcb *b = tp_bound_pcbs.next, *l = tp_listeners; | |
860 | register struct tp_pcb *t; | |
861 | ||
862 | for (;;) { | |
863 | if (b != (struct tp_pcb *)&tp_bound_pcbs) { | |
864 | t = b; b = t->tp_next; | |
865 | } else if (l) { | |
866 | t = l; l = t->tp_nextlisten; | |
867 | } else | |
868 | break; | |
869 | if (tlen == t->tp_lsuffixlen && bcmp(tsel, t->tp_lsuffix, tlen) == 0) { | |
870 | if (t->tp_flags & TPF_GENERAL_ADDR) { | |
871 | if (siso == 0 || reuseaddr == 0) | |
872 | return 1; | |
873 | } else if (siso) { | |
874 | if (siso->siso_family == t->tp_domain && | |
875 | t->tp_nlproto->nlp_cmpnetaddr(t->tp_npcb, siso, TP_LOCAL)) | |
876 | return 1; | |
877 | } else if (reuseaddr == 0) | |
878 | return 1; | |
879 | } | |
880 | } | |
881 | return 0; | |
882 | ||
883 | } | |
884 | ||
885 | ||
886 | tp_pcbbind(tpcb, nam) | |
887 | register struct tp_pcb *tpcb; | |
888 | register struct mbuf *nam; | |
889 | { | |
890 | register struct sockaddr_iso *siso = 0; | |
891 | int tlen = 0, wrapped = 0; | |
892 | caddr_t tsel; | |
893 | u_short tutil; | |
894 | ||
895 | if (tpcb->tp_state != TP_CLOSED) | |
896 | return (EINVAL); | |
897 | if (nam) { | |
898 | siso = mtod(nam, struct sockaddr_iso *); | |
899 | switch (siso->siso_family) { | |
900 | default: | |
901 | return (EAFNOSUPPORT); | |
902 | #ifdef ISO | |
903 | case AF_ISO: | |
904 | tlen = siso->siso_tlen; | |
905 | tsel = TSEL(siso); | |
906 | if (siso->siso_nlen == 0) | |
907 | siso = 0; | |
908 | break; | |
909 | #endif | |
910 | #ifdef INET | |
911 | case AF_INET: | |
912 | tsel = (caddr_t)&tutil; | |
913 | if (tutil = ((struct sockaddr_in *)siso)->sin_port) { | |
914 | tlen = 2; | |
915 | } | |
916 | if (((struct sockaddr_in *)siso)->sin_addr.s_addr == 0) | |
917 | siso = 0; | |
918 | } | |
919 | #endif | |
920 | } | |
921 | if (tpcb->tp_lsuffixlen == 0) { | |
922 | if (tlen) { | |
923 | if (tp_tselinuse(tsel, tlen, siso, | |
924 | tpcb->tp_sock->so_options & SO_REUSEADDR)) | |
925 | return (EINVAL); | |
926 | } else for (tsel = (caddr_t)&tp_unique, tlen = 2;;){ | |
927 | if (tp_unique++ < ISO_PORT_RESERVED || | |
928 | tp_unique > ISO_PORT_USERRESERVED) { | |
929 | if (wrapped++) | |
930 | return ESRCH; | |
931 | tp_unique = ISO_PORT_RESERVED; | |
932 | } | |
933 | if (tp_tselinuse(tsel, tlen, siso, 0) == 0) | |
934 | break; | |
935 | } | |
936 | bcopy(tsel, tpcb->tp_lsuffix, (tpcb->tp_lsuffixlen = tlen)); | |
937 | insque(tpcb, &tp_bound_pcbs); | |
938 | } else { | |
939 | if (tlen || siso == 0) | |
940 | return (EINVAL); | |
941 | } | |
942 | if (siso == 0) { | |
943 | tpcb->tp_flags |= TPF_GENERAL_ADDR; | |
944 | return (0); | |
945 | } | |
946 | return tpcb->tp_nlproto->nlp_pcbbind(tpcb->tp_npcb, nam); | |
947 | } |