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c32c2ec1 | 1 | /*********************************************************** |
7b25382f | 2 | Copyright IBM Corporation 1987 |
c32c2ec1 KS |
3 | |
4 | All Rights Reserved | |
5 | ||
6 | Permission to use, copy, modify, and distribute this software and its | |
7 | documentation for any purpose and without fee is hereby granted, | |
8 | provided that the above copyright notice appear in all copies and that | |
9 | both that copyright notice and this permission notice appear in | |
10 | supporting documentation, and that the name of IBM not be | |
11 | used in advertising or publicity pertaining to distribution of the | |
12 | software without specific, written prior permission. | |
13 | ||
14 | IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING | |
15 | ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL | |
16 | IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR | |
17 | ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
18 | WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | |
19 | ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
20 | SOFTWARE. | |
21 | ||
22 | ******************************************************************/ | |
23 | ||
24 | /* | |
25 | * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison | |
26 | */ | |
27 | /* | |
28 | * ARGO TP | |
29 | * | |
30 | * $Header: tp_pcb.c,v 5.4 88/11/18 17:28:24 nhall Exp $ | |
31 | * $Source: /usr/argo/sys/netiso/RCS/tp_pcb.c,v $ | |
620f4252 | 32 | * @(#)tp_pcb.c 7.5 (Berkeley) %G% * |
c32c2ec1 KS |
33 | * |
34 | * | |
35 | * This is the initialization and cleanup stuff - | |
36 | * for the tp machine in general as well as for the individual pcbs. | |
37 | * tp_init() is called at system startup. tp_attach() and tp_getref() are | |
38 | * called when a socket is created. tp_detach() and tp_freeref() | |
39 | * are called during the closing stage and/or when the reference timer | |
40 | * goes off. | |
41 | * tp_soisdisconnecting() and tp_soisdisconnected() are tp-specific | |
42 | * versions of soisconnect* | |
43 | * and are called (obviously) during the closing phase. | |
44 | * | |
45 | */ | |
46 | ||
47 | #ifndef lint | |
48 | static char *rcsid = "$Header: tp_pcb.c,v 5.4 88/11/18 17:28:24 nhall Exp $"; | |
49 | #endif lint | |
50 | ||
51 | #include "argoxtwentyfive.h" | |
52 | #include "types.h" | |
53 | #include "param.h" | |
54 | #include "mbuf.h" | |
55 | #include "socket.h" | |
56 | #include "socketvar.h" | |
57 | #include "protosw.h" | |
58 | #include "errno.h" | |
59 | #include "time.h" | |
a50e2bc0 KS |
60 | #include "argo_debug.h" |
61 | #include "tp_param.h" | |
62 | #include "tp_timer.h" | |
63 | #include "tp_ip.h" | |
64 | #include "tp_stat.h" | |
65 | #include "tp_pcb.h" | |
66 | #include "tp_tpdu.h" | |
67 | #include "tp_trace.h" | |
68 | #include "tp_meas.h" | |
69 | #include "tp_seq.h" | |
70 | #include "tp_clnp.h" | |
c32c2ec1 KS |
71 | |
72 | /* list of reference structures */ | |
73 | struct tp_ref tp_ref[N_TPREF]; | |
74 | ||
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(); | |
233 | int in_putsufx(); | |
234 | int in_getsufx(); | |
235 | int in_recycle_tsuffix(); | |
236 | int tpip_mtu(); | |
237 | int in_pcbbind(); | |
238 | int in_pcbconnect(); | |
239 | int in_pcbdisconnect(); | |
240 | int in_pcbdetach(); | |
241 | int in_pcballoc(); | |
242 | int tpip_output(); | |
243 | int tpip_output_dg(); | |
244 | struct inpcb tp_inpcb; | |
245 | #endif INET | |
246 | #ifdef ISO | |
247 | int iso_putnetaddr(); | |
248 | int iso_getnetaddr(); | |
249 | int iso_putsufx(); | |
250 | int iso_getsufx(); | |
251 | int iso_recycle_tsuffix(); | |
252 | int tpclnp_mtu(); | |
253 | int iso_pcbbind(); | |
254 | int iso_pcbconnect(); | |
255 | int iso_pcbdisconnect(); | |
256 | int iso_pcbdetach(); | |
257 | int iso_pcballoc(); | |
258 | int tpclnp_output(); | |
259 | int tpclnp_output_dg(); | |
260 | int iso_nlctloutput(); | |
261 | struct isopcb tp_isopcb; | |
262 | #endif ISO | |
263 | #if NARGOXTWENTYFIVE > 0 | |
264 | int iso_putnetaddr(); | |
265 | int iso_getnetaddr(); | |
266 | int iso_putsufx(); | |
267 | int iso_getsufx(); | |
268 | int iso_recycle_tsuffix(); | |
269 | int tpcons_mtu(); | |
270 | int iso_pcbbind(); | |
271 | int iso_pcbconnect(); | |
272 | int iso_pcbdisconnect(); | |
273 | int iso_pcbdetach(); | |
274 | int iso_pcballoc(); | |
275 | int tpcons_output(); | |
276 | int tpcons_output_dg(); | |
277 | struct isopcb tp_isopcb; | |
278 | #endif NARGOXTWENTYFIVE | |
279 | ||
a50e2bc0 | 280 | |
c32c2ec1 KS |
281 | struct nl_protosw nl_protosw[] = { |
282 | /* ISO_CLNS */ | |
283 | #ifdef ISO | |
284 | { AF_ISO, iso_putnetaddr, iso_getnetaddr, | |
285 | iso_putsufx, iso_getsufx, | |
286 | iso_recycle_tsuffix, | |
287 | tpclnp_mtu, iso_pcbbind, iso_pcbconnect, | |
288 | iso_pcbdisconnect, iso_pcbdetach, | |
289 | iso_pcballoc, | |
290 | tpclnp_output, tpclnp_output_dg, iso_nlctloutput, | |
291 | (caddr_t) &tp_isopcb, | |
292 | }, | |
a50e2bc0 KS |
293 | #else |
294 | { 0 }, | |
c32c2ec1 KS |
295 | #endif ISO |
296 | /* IN_CLNS */ | |
297 | #ifdef INET | |
298 | { AF_INET, in_putnetaddr, in_getnetaddr, | |
299 | in_putsufx, in_getsufx, | |
300 | in_recycle_tsuffix, | |
301 | tpip_mtu, in_pcbbind, in_pcbconnect, | |
302 | in_pcbdisconnect, in_pcbdetach, | |
303 | in_pcballoc, | |
304 | tpip_output, tpip_output_dg, /* nl_ctloutput */ NULL, | |
305 | (caddr_t) &tp_inpcb, | |
306 | }, | |
a50e2bc0 KS |
307 | #else |
308 | { 0 }, | |
c32c2ec1 KS |
309 | #endif INET |
310 | /* ISO_CONS */ | |
a50e2bc0 | 311 | #if defined(ISO) && (NARGOXTWENTYFIVE > 0) |
c32c2ec1 KS |
312 | { AF_ISO, iso_putnetaddr, iso_getnetaddr, |
313 | iso_putsufx, iso_getsufx, | |
314 | iso_recycle_tsuffix, | |
315 | tpcons_mtu, iso_pcbbind, iso_pcbconnect, | |
316 | iso_pcbdisconnect, iso_pcbdetach, | |
317 | iso_pcballoc, | |
318 | tpcons_output, tpcons_output_dg, iso_nlctloutput, | |
319 | (caddr_t) &tp_isopcb, | |
320 | }, | |
a50e2bc0 KS |
321 | #else |
322 | { 0 }, | |
323 | #endif ISO_CONS | |
324 | /* End of protosw marker */ | |
325 | { 0 } | |
c32c2ec1 KS |
326 | }; |
327 | ||
328 | /* | |
329 | * NAME: tp_init() | |
330 | * | |
331 | * CALLED FROM: | |
332 | * autoconf through the protosw structure | |
333 | * | |
334 | * FUNCTION: | |
335 | * initialize tp machine | |
336 | * | |
337 | * RETURNS: Nada | |
338 | * | |
339 | * SIDE EFFECTS: | |
340 | * | |
341 | * NOTES: | |
342 | */ | |
a50e2bc0 | 343 | int |
c32c2ec1 KS |
344 | tp_init() |
345 | { | |
346 | static int init_done=0; | |
347 | void tp_timerinit(); | |
348 | ||
349 | if (init_done++) | |
a50e2bc0 | 350 | return 0; |
c32c2ec1 | 351 | |
c32c2ec1 KS |
352 | |
353 | /* FOR INET */ | |
354 | tp_inpcb.inp_next = tp_inpcb.inp_prev = &tp_inpcb; | |
355 | /* FOR ISO */ | |
356 | tp_isopcb.isop_next = tp_isopcb.isop_prev = &tp_isopcb; | |
357 | ||
620f4252 KS |
358 | tp_start_win = 2; |
359 | ||
c32c2ec1 KS |
360 | tp_timerinit(); |
361 | bzero((caddr_t)&tp_stat, sizeof(struct tp_stat)); | |
a50e2bc0 | 362 | return 0; |
c32c2ec1 KS |
363 | } |
364 | ||
365 | /* | |
366 | * NAME: tp_soisdisconnecting() | |
367 | * | |
368 | * CALLED FROM: | |
369 | * tp.trans | |
370 | * | |
371 | * FUNCTION and ARGUMENTS: | |
372 | * Set state of the socket (so) to reflect that fact that we're disconnectING | |
373 | * | |
374 | * RETURNS: Nada | |
375 | * | |
376 | * SIDE EFFECTS: | |
377 | * | |
378 | * NOTES: | |
379 | * This differs from the regular soisdisconnecting() in that the latter | |
380 | * also sets the SS_CANTRECVMORE and SS_CANTSENDMORE flags. | |
381 | * We don't want to set those flags because those flags will cause | |
382 | * a SIGPIPE to be delivered in sosend() and we don't like that. | |
383 | * If anyone else is sleeping on this socket, wake 'em up. | |
384 | */ | |
385 | void | |
386 | tp_soisdisconnecting(so) | |
387 | register struct socket *so; | |
388 | { | |
44f52ea5 KS |
389 | soisdisconnecting(so); |
390 | so->so_state &= ~SS_CANTSENDMORE; | |
c32c2ec1 KS |
391 | IFPERF(sototpcb(so)) |
392 | register struct tp_pcb *tpcb = sototpcb(so); | |
393 | u_int fsufx, lsufx; | |
394 | ||
a50e2bc0 KS |
395 | bcopy ((caddr_t)tpcb->tp_fsuffix, (caddr_t)&fsufx, sizeof(u_int) ); |
396 | bcopy ((caddr_t)tpcb->tp_lsuffix, (caddr_t)&lsufx, sizeof(u_int) ); | |
c32c2ec1 | 397 | |
a50e2bc0 | 398 | tpmeas(tpcb->tp_lref, TPtime_close, &time, fsufx, lsufx, tpcb->tp_fref); |
c32c2ec1 KS |
399 | tpcb->tp_perf_on = 0; /* turn perf off */ |
400 | ENDPERF | |
401 | } | |
402 | ||
403 | ||
404 | /* | |
405 | * NAME: tp_soisdisconnected() | |
406 | * | |
407 | * CALLED FROM: | |
408 | * tp.trans | |
409 | * | |
410 | * FUNCTION and ARGUMENTS: | |
411 | * Set state of the socket (so) to reflect that fact that we're disconnectED | |
412 | * Set the state of the reference structure to closed, and | |
413 | * recycle the suffix. | |
414 | * Start a reference timer. | |
415 | * | |
416 | * RETURNS: Nada | |
417 | * | |
418 | * SIDE EFFECTS: | |
419 | * | |
420 | * NOTES: | |
421 | * This differs from the regular soisdisconnected() in that the latter | |
422 | * also sets the SS_CANTRECVMORE and SS_CANTSENDMORE flags. | |
423 | * We don't want to set those flags because those flags will cause | |
424 | * a SIGPIPE to be delivered in sosend() and we don't like that. | |
425 | * If anyone else is sleeping on this socket, wake 'em up. | |
426 | */ | |
427 | void | |
428 | tp_soisdisconnected(tpcb) | |
429 | register struct tp_pcb *tpcb; | |
430 | { | |
431 | register struct socket *so = tpcb->tp_sock; | |
432 | ||
44f52ea5 KS |
433 | soisdisconnecting(so); |
434 | so->so_state &= ~SS_CANTSENDMORE; | |
c32c2ec1 | 435 | IFPERF(sototpcb(so)) |
a50e2bc0 | 436 | register struct tp_pcb *ttpcb = sototpcb(so); |
c32c2ec1 KS |
437 | u_int fsufx, lsufx; |
438 | ||
439 | /* CHOKE */ | |
a50e2bc0 KS |
440 | bcopy ((caddr_t)ttpcb->tp_fsuffix, (caddr_t)&fsufx, sizeof(u_int) ); |
441 | bcopy ((caddr_t)ttpcb->tp_lsuffix, (caddr_t)&lsufx, sizeof(u_int) ); | |
c32c2ec1 | 442 | |
a50e2bc0 KS |
443 | tpmeas(ttpcb->tp_lref, TPtime_close, |
444 | &time, &lsufx, &fsufx, ttpcb->tp_fref); | |
c32c2ec1 KS |
445 | tpcb->tp_perf_on = 0; /* turn perf off */ |
446 | ENDPERF | |
447 | ||
448 | tpcb->tp_refp->tpr_state = REF_FROZEN; | |
449 | tp_recycle_tsuffix( tpcb ); | |
450 | tp_etimeout(tpcb->tp_refp, TM_reference, 0,0,0, (int)tpcb->tp_refer_ticks); | |
451 | } | |
452 | ||
453 | int tp_maxrefopen; /* highest reference # of the set of open tp connections */ | |
454 | ||
455 | /* | |
456 | * NAME: tp_freeref() | |
457 | * | |
458 | * CALLED FROM: | |
459 | * tp.trans when the reference timer goes off, and | |
460 | * from tp_attach() and tp_detach() when a tpcb is partially set up but not | |
461 | * set up enough to have a ref timer set for it, and it's discarded | |
462 | * due to some sort of error or an early close() | |
463 | * | |
464 | * FUNCTION and ARGUMENTS: | |
465 | * Frees the reference represented by (r) for re-use. | |
466 | * | |
467 | * RETURNS: Nothing | |
468 | * | |
469 | * SIDE EFFECTS: | |
470 | * | |
471 | * NOTES: better be called at clock priority !!!!! | |
472 | */ | |
473 | void | |
474 | tp_freeref(r) | |
475 | register struct tp_ref *r; | |
476 | { | |
477 | IFDEBUG(D_TIMER) | |
478 | printf("tp_freeref called for ref %d maxrefopen %d\n", | |
479 | r - tp_ref, tp_maxrefopen); | |
480 | ENDDEBUG | |
481 | IFTRACE(D_TIMER) | |
482 | tptrace(TPPTmisc, "tp_freeref ref tp_maxrefopen", | |
483 | r - tp_ref, tp_maxrefopen, 0, 0); | |
484 | ENDTRACE | |
485 | r->tpr_state = REF_FREE; | |
486 | IFDEBUG(D_CONN) | |
487 | printf("tp_freeref: CLEARING tpr_pcb 0x%x\n", r->tpr_pcb); | |
488 | ENDDEBUG | |
489 | r->tpr_pcb = (struct tp_pcb *)0; | |
490 | ||
491 | r = &tp_ref[tp_maxrefopen]; | |
492 | ||
493 | while( tp_maxrefopen > 0 ) { | |
494 | if(r->tpr_state ) | |
495 | break; | |
496 | tp_maxrefopen--; | |
497 | r--; | |
498 | } | |
499 | IFDEBUG(D_TIMER) | |
500 | printf("tp_freeref ends w/ maxrefopen %d\n", tp_maxrefopen); | |
501 | ENDDEBUG | |
502 | } | |
503 | ||
504 | /* | |
505 | * NAME: tp_getref() | |
506 | * | |
507 | * CALLED FROM: | |
508 | * tp_attach() | |
509 | * | |
510 | * FUNCTION and ARGUMENTS: | |
511 | * obtains the next free reference and allocates the appropriate | |
512 | * ref structure, links that structure to (tpcb) | |
513 | * | |
514 | * RETURN VALUE: | |
515 | * a reference number | |
516 | * or TP_ENOREF | |
517 | * | |
518 | * SIDE EFFECTS: | |
519 | * | |
520 | * NOTES: | |
521 | */ | |
522 | static RefNum | |
523 | tp_getref(tpcb) | |
524 | register struct tp_pcb *tpcb; | |
525 | { | |
526 | register struct tp_ref *r = tp_ref; | |
527 | register int i=1; | |
528 | ||
529 | r++; /* tp_ref[0] is never used */ | |
530 | ||
531 | /* REF_FREE is zero */ | |
532 | while( r->tpr_state ) { | |
533 | r++; | |
534 | if ( i == N_TPREF ) { | |
535 | return TP_ENOREF; | |
536 | } | |
537 | i++; | |
538 | } | |
539 | r->tpr_state = REF_OPENING; | |
540 | if (tp_maxrefopen < i) | |
541 | tp_maxrefopen = i; | |
542 | r->tpr_pcb = tpcb; | |
543 | tpcb->tp_refp = r; | |
544 | ||
545 | return i; | |
546 | } | |
547 | ||
548 | /* | |
549 | * NAME: tp_attach() | |
550 | * | |
551 | * CALLED FROM: | |
552 | * tp_usrreq, PRU_ATTACH | |
553 | * | |
554 | * FUNCTION and ARGUMENTS: | |
555 | * given a socket (so) and a protocol family (dom), allocate a tpcb | |
556 | * and ref structure, initialize everything in the structures that | |
557 | * needs to be initialized. | |
558 | * | |
559 | * RETURN VALUE: | |
560 | * 0 ok | |
561 | * EINVAL if DEBUG(X) in is on and a disaster has occurred | |
562 | * ENOPROTOOPT if TP hasn't been configured or if the | |
563 | * socket wasn't created with tp as its protocol | |
564 | * EISCONN if this socket is already part of a connection | |
565 | * ETOOMANYREFS if ran out of tp reference numbers. | |
566 | * E* whatever error is returned from soreserve() | |
567 | * for from the network-layer pcb allocation routine | |
568 | * | |
569 | * SIDE EFFECTS: | |
570 | * | |
571 | * NOTES: | |
572 | */ | |
a50e2bc0 | 573 | tp_attach(so, dom) |
c32c2ec1 KS |
574 | struct socket *so; |
575 | int dom; | |
576 | { | |
577 | register struct tp_pcb *tpcb; | |
c32c2ec1 KS |
578 | int error; |
579 | int protocol = so->so_proto->pr_protocol; | |
580 | extern struct tp_conn_param tp_conn_param[]; | |
581 | ||
582 | IFDEBUG(D_CONN) | |
583 | printf("tp_attach:dom 0x%x so 0x%x ", dom, so); | |
584 | ENDDEBUG | |
585 | IFTRACE(D_CONN) | |
586 | tptrace(TPPTmisc, "tp_attach:dom so", dom, so, 0, 0); | |
587 | ENDTRACE | |
588 | if ( ! tp_param.tpp_configed ) { | |
589 | error = ENOPROTOOPT; /* protocol not available */ | |
590 | goto bad2; | |
591 | } | |
592 | ||
593 | if (so->so_pcb != NULL) { | |
594 | return EISCONN; /* socket already part of a connection*/ | |
595 | } | |
596 | ||
597 | error = soreserve(so, TP_SOCKBUFSIZE, TP_SOCKBUFSIZE); | |
598 | /* later an ioctl will allow reallocation IF still in closed state */ | |
599 | ||
600 | if (error) | |
601 | goto bad2; | |
602 | ||
a50e2bc0 KS |
603 | MALLOC(tpcb, struct tp_pcb *, sizeof(*tpcb), M_PCB, M_NOWAIT); |
604 | if (tpcb == NULL) { | |
c32c2ec1 KS |
605 | error = ENOBUFS; |
606 | goto bad2; | |
607 | } | |
c32c2ec1 KS |
608 | bzero( (caddr_t)tpcb, sizeof (struct tp_pcb) ); |
609 | ||
c32c2ec1 KS |
610 | if ( ((tpcb->tp_lref = tp_getref(tpcb)) & TP_ENOREF) != 0 ) { |
611 | error = ETOOMANYREFS; | |
612 | goto bad3; | |
613 | } | |
614 | tpcb->tp_sock = so; | |
615 | tpcb->tp_domain = dom; | |
616 | if (protocol<ISOPROTO_TP4) { | |
617 | tpcb->tp_netservice = ISO_CONS; | |
618 | tpcb->tp_snduna = (SeqNum) -1;/* kludge so the pseudo-ack from the CR/CC | |
619 | * will generate correct fake-ack values | |
620 | */ | |
621 | } else { | |
622 | tpcb->tp_netservice = (dom== AF_INET)?IN_CLNS:ISO_CLNS; | |
623 | /* the default */ | |
624 | } | |
625 | tpcb->_tp_param = tp_conn_param[tpcb->tp_netservice]; | |
626 | ||
627 | tpcb->tp_cong_win = 1; | |
628 | tpcb->tp_state = TP_CLOSED; | |
629 | tpcb->tp_vers = TP_VERSION; | |
630 | ||
631 | /* Spec says default is 128 octets, | |
632 | * that is, if the tpdusize argument never appears, use 128. | |
633 | * As the initiator, we will always "propose" the 2048 | |
634 | * size, that is, we will put this argument in the CR | |
635 | * always, but accept what the other side sends on the CC. | |
636 | * If the initiator sends us something larger on a CR, | |
637 | * we'll respond w/ this. | |
638 | * Our maximum is 4096. See tp_chksum.c comments. | |
639 | */ | |
640 | tpcb->tp_l_tpdusize = 1 << tpcb->tp_tpdusize; | |
641 | ||
642 | tpcb->tp_seqmask = TP_NML_FMT_MASK; | |
643 | tpcb->tp_seqbit = TP_NML_FMT_BIT; | |
644 | tpcb->tp_seqhalf = tpcb->tp_seqbit >> 1; | |
645 | tpcb->tp_sndhiwat = (SeqNum) - 1; /* a kludge but it works */ | |
646 | tpcb->tp_s_subseq = 0; | |
647 | ||
648 | /* attach to a network-layer protoswitch */ | |
649 | /* new way */ | |
650 | tpcb->tp_nlproto = & nl_protosw[tpcb->tp_netservice]; | |
651 | ASSERT( tpcb->tp_nlproto->nlp_afamily == tpcb->tp_domain); | |
652 | #ifdef notdef | |
653 | /* OLD WAY */ | |
654 | /* TODO: properly, this search would be on the basis of | |
655 | * domain,netservice or just netservice only (if you have | |
656 | * IN_CLNS, ISO_CLNS, and ISO_CONS) | |
657 | */ | |
658 | tpcb->tp_nlproto = nl_protosw; | |
659 | while(tpcb->tp_nlproto->nlp_afamily != tpcb->tp_domain ) { | |
660 | if( tpcb->tp_nlproto->nlp_afamily == 0 ) { | |
661 | error = EAFNOSUPPORT; | |
662 | goto bad4; | |
663 | } | |
664 | tpcb->tp_nlproto ++; | |
665 | } | |
666 | #endif notdef | |
667 | ||
668 | /* xx_pcballoc sets so_pcb */ | |
669 | if ( error = (tpcb->tp_nlproto->nlp_pcballoc) ( | |
670 | so, tpcb->tp_nlproto->nlp_pcblist ) ) { | |
671 | goto bad4; | |
672 | } | |
673 | ||
674 | if( dom == AF_INET ) | |
675 | sotoinpcb(so)->inp_ppcb = (caddr_t) tpcb; | |
676 | /* nothing to do for iso case */ | |
677 | ||
678 | tpcb->tp_npcb = (caddr_t) so->so_pcb; | |
679 | so->so_tpcb = (caddr_t) tpcb; | |
680 | ||
681 | return 0; | |
682 | ||
683 | bad4: | |
684 | IFDEBUG(D_CONN) | |
685 | printf("BAD4 in tp_attach, so 0x%x\n", so); | |
686 | ENDDEBUG | |
687 | tp_freeref(tpcb->tp_refp); | |
688 | ||
689 | bad3: | |
690 | IFDEBUG(D_CONN) | |
691 | printf("BAD3 in tp_attach, so 0x%x\n", so); | |
692 | ENDDEBUG | |
693 | ||
a50e2bc0 | 694 | free((caddr_t)tpcb, M_PCB); /* never a cluster */ |
c32c2ec1 KS |
695 | |
696 | bad2: | |
697 | IFDEBUG(D_CONN) | |
698 | printf("BAD2 in tp_attach, so 0x%x\n", so); | |
699 | ENDDEBUG | |
700 | so->so_pcb = 0; | |
701 | so->so_tpcb = 0; | |
702 | sofree(so); | |
703 | ||
a50e2bc0 | 704 | /*bad:*/ |
c32c2ec1 KS |
705 | IFDEBUG(D_CONN) |
706 | printf("BAD in tp_attach, so 0x%x\n", so); | |
707 | ENDDEBUG | |
708 | return error; | |
709 | } | |
710 | ||
711 | /* | |
712 | * NAME: tp_detach() | |
713 | * | |
714 | * CALLED FROM: | |
715 | * tp.trans, on behalf of a user close request | |
716 | * and when the reference timer goes off | |
717 | * (if the disconnect was initiated by the protocol entity | |
718 | * rather than by the user) | |
719 | * | |
720 | * FUNCTION and ARGUMENTS: | |
721 | * remove the tpcb structure from the list of active or | |
722 | * partially active connections, recycle all the mbufs | |
723 | * associated with the pcb, ref structure, sockbufs, etc. | |
724 | * Only free the ref structure if you know that a ref timer | |
725 | * wasn't set for this tpcb. | |
726 | * | |
727 | * RETURNS: Nada | |
728 | * | |
729 | * SIDE EFFECTS: | |
730 | * | |
731 | * NOTES: | |
732 | * tp_soisdisconnected() was already when this is called | |
733 | */ | |
734 | void | |
735 | tp_detach(tpcb) | |
736 | register struct tp_pcb *tpcb; | |
737 | { | |
738 | void tp_freeref(); | |
739 | register struct socket *so = tpcb->tp_sock; | |
740 | ||
741 | IFDEBUG(D_CONN) | |
a50e2bc0 KS |
742 | printf("tp_detach(tpcb 0x%x, so 0x%x)\n", |
743 | tpcb,so); | |
c32c2ec1 KS |
744 | ENDDEBUG |
745 | IFTRACE(D_CONN) | |
746 | tptraceTPCB(TPPTmisc, "tp_detach tpcb so lsufx", | |
7b25382f | 747 | tpcb, so, *(u_short *)(tpcb->tp_lsuffix), 0); |
c32c2ec1 KS |
748 | ENDTRACE |
749 | ||
750 | if (so->so_head) { | |
751 | if (!soqremque(so, 0) && !soqremque(so, 1)) | |
752 | panic("sofree dq"); | |
753 | so->so_head = 0; | |
754 | } | |
755 | ||
756 | IFDEBUG(D_CONN) | |
757 | printf("tp_detach(freeing RTC list snduna 0x%x rcvnxt 0x%x)\n", | |
758 | tpcb->tp_snduna_rtc, | |
759 | tpcb->tp_rcvnxt_rtc); | |
760 | ENDDEBUG | |
761 | ||
762 | #define FREE_RTC_LIST(XXX)\ | |
763 | { register struct tp_rtc *xxr = XXX, *xxs; while (xxr) {\ | |
764 | xxs = xxr->tprt_next;\ | |
765 | m_freem( xxr->tprt_data );\ | |
766 | m_free( dtom(xxr) ); xxr = xxs; }\ | |
767 | XXX = (struct tp_rtc *)0;\ | |
768 | } | |
769 | ||
770 | FREE_RTC_LIST( tpcb->tp_snduna_rtc ); | |
771 | tpcb->tp_sndhiwat_rtc = (struct tp_rtc *)0; | |
772 | ||
773 | FREE_RTC_LIST( tpcb->tp_rcvnxt_rtc ); | |
774 | ||
775 | #undef FREE_RTC_LIST | |
776 | ||
777 | IFDEBUG(D_CONN) | |
778 | printf("calling (...nlproto->...)(0x%x, so 0x%x)\n", | |
779 | so->so_pcb, so); | |
780 | printf("so 0x%x so_head 0x%x, qlen %d q0len %d qlimit %d\n", | |
781 | so, so->so_head, | |
782 | so->so_q0len, so->so_qlen, so->so_qlimit); | |
783 | ENDDEBUG | |
784 | ||
a50e2bc0 | 785 | if ( tpcb->tp_flags & (TPF_DISC_DATA_OUT | TPF_CONN_DATA_OUT ) ) { |
c32c2ec1 KS |
786 | ASSERT( so->so_snd.sb_cc != 0 ); |
787 | IFDEBUG(D_CONN) | |
788 | printf( | |
789 | "detach, flags 0x%x doing sbdrop on so_snd, mb 0x%x cc 0x%x\n", | |
790 | tpcb->tp_flags, so->so_snd.sb_mb, so->so_snd.sb_cc); | |
791 | dump_mbuf( so->so_snd.sb_mb, "detach so snd: \n"); | |
792 | ENDDEBUG | |
793 | if ( so->so_snd.sb_cc != 0 ) | |
a50e2bc0 | 794 | sbflush(&so->so_snd); |
c32c2ec1 KS |
795 | tpcb->tp_flags &= ~(TPF_CONN_DATA_OUT | TPF_DISC_DATA_OUT); |
796 | } | |
797 | if ( tpcb->tp_flags & (TPF_DISC_DATA_IN | TPF_CONN_DATA_IN ) ) { | |
798 | ASSERT( tpcb->tp_Xrcv.sb_cc != 0 ); | |
799 | IFDEBUG(D_CONN) | |
800 | printf( | |
801 | "detach, flags 0x%x doing sbdrop on tp_Xrcv, mb 0x%x cc 0x%x\n", | |
802 | tpcb->tp_flags, tpcb->tp_Xrcv.sb_mb, tpcb->tp_Xrcv.sb_cc); | |
803 | dump_mbuf( tpcb->tp_Xrcv.sb_mb, "detach Xrcv: \n"); | |
804 | ENDDEBUG | |
805 | if( tpcb->tp_Xrcv.sb_cc != 0 ) | |
a50e2bc0 | 806 | sbdrop(&tpcb->tp_Xrcv, (int)tpcb->tp_Xrcv.sb_cc); |
c32c2ec1 KS |
807 | tpcb->tp_flags &= ~(TPF_CONN_DATA_IN | TPF_DISC_DATA_IN); |
808 | } | |
809 | ||
810 | IFDEBUG(D_CONN) | |
811 | printf("so_snd at 0x%x so_rcv at 0x%x\n", &so->so_snd, &so->so_rcv); | |
812 | dump_mbuf(so->so_snd.sb_mb, "so_snd at detach "); | |
813 | printf("about to call LL detach, nlproto 0x%x, nl_detach 0x%x\n", | |
814 | tpcb->tp_nlproto, tpcb->tp_nlproto->nlp_pcbdetach); | |
815 | ENDDEBUG | |
816 | ||
c32c2ec1 | 817 | |
a50e2bc0 KS |
818 | |
819 | (tpcb->tp_nlproto->nlp_pcbdetach)((struct inpcb *)so->so_pcb); | |
820 | /* does an sofree(so) */ | |
821 | ||
c32c2ec1 KS |
822 | IFDEBUG(D_CONN) |
823 | printf("after xxx_pcbdetach\n"); | |
824 | ENDDEBUG | |
825 | ||
826 | if( tpcb->tp_refp->tpr_state == REF_OPENING ) { | |
827 | /* no connection existed here so no reference timer will be called */ | |
828 | IFDEBUG(D_CONN) | |
829 | printf("SETTING ref %d, 0x%x to REF_FREE\n", tpcb->tp_lref, | |
830 | tpcb->tp_refp - &tp_ref[0]); | |
831 | ENDDEBUG | |
832 | ||
833 | tp_freeref(tpcb->tp_refp); | |
834 | } | |
835 | ||
a50e2bc0 KS |
836 | if (tpcb->tp_Xsnd.sb_mb) { |
837 | printf("Unsent Xdata on detach; would panic"); | |
838 | sbflush(&tpcb->tp_Xsnd); | |
839 | } | |
c32c2ec1 KS |
840 | so->so_tpcb = (caddr_t)0; |
841 | ||
842 | /* | |
843 | * Get rid of the cluster mbuf allocated for performance measurements, if | |
844 | * there is one. Note that tpcb->tp_perf_on says nothing about whether or | |
845 | * not a cluster mbuf was allocated, so you have to check for a pointer | |
846 | * to one (that is, we need the TP_PERF_MEASs around the following section | |
847 | * of code, not the IFPERFs) | |
848 | */ | |
849 | #ifdef TP_PERF_MEAS | |
a50e2bc0 KS |
850 | if(tpcb->tp_p_mbuf) { |
851 | register struct mbuf *m = tpcb->tp_p_mbuf; | |
852 | struct mbuf *n; | |
c32c2ec1 KS |
853 | IFDEBUG(D_PERF_MEAS) |
854 | printf("freeing tp_p_meas 0x%x ", tpcb->tp_p_meas); | |
c32c2ec1 | 855 | ENDDEBUG |
a50e2bc0 KS |
856 | do { |
857 | MFREE(m, n); | |
858 | m = n; | |
859 | } while (n); | |
860 | tpcb->tp_p_meas = 0; | |
861 | tpcb->tp_p_mbuf = 0; | |
c32c2ec1 KS |
862 | } |
863 | #endif TP_PERF_MEAS | |
864 | ||
865 | IFDEBUG(D_CONN) | |
a50e2bc0 | 866 | printf( "end of detach, NOT single, tpcb 0x%x\n", tpcb); |
c32c2ec1 | 867 | ENDDEBUG |
a50e2bc0 | 868 | /* free((caddr_t)tpcb, M_PCB); WHere to put this ? */ |
c32c2ec1 | 869 | } |