1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)tp_pcb.c 8.1 (Berkeley) 06/10/93 8 */ 9 10 /*********************************************************** 11 Copyright IBM Corporation 1987 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 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/mbuf.h> 58 #include <sys/socket.h> 59 #include <sys/socketvar.h> 60 #include <sys/domain.h> 61 #include <sys/protosw.h> 62 #include <sys/errno.h> 63 #include <sys/time.h> 64 65 #include <netiso/argo_debug.h> 66 #include <netiso/tp_param.h> 67 #include <netiso/tp_timer.h> 68 #include <netiso/tp_ip.h> 69 #include <netiso/tp_stat.h> 70 #include <netiso/tp_pcb.h> 71 #include <netiso/tp_tpdu.h> 72 #include <netiso/tp_trace.h> 73 #include <netiso/tp_meas.h> 74 #include <netiso/tp_seq.h> 75 #include <netiso/tp_clnp.h> 76 77 /* ticks are in units of: 78 * 500 nano-fortnights ;-) or 79 * 500 ms or 80 * 1/2 second 81 */ 82 83 struct tp_conn_param tp_conn_param[] = { 84 /* ISO_CLNS: TP4 CONNECTION LESS */ 85 { 86 TP_NRETRANS, /* short p_Nretrans; */ 87 20, /* 10 sec */ /* short p_dr_ticks; */ 88 89 20, /* 10 sec */ /* short p_cc_ticks; */ 90 20, /* 10 sec */ /* short p_dt_ticks; */ 91 92 40, /* 20 sec */ /* short p_x_ticks; */ 93 80, /* 40 sec */ /* short p_cr_ticks;*/ 94 95 240, /* 2 min */ /* short p_keepalive_ticks;*/ 96 10, /* 5 sec */ /* short p_sendack_ticks; */ 97 98 600, /* 5 min */ /* short p_ref_ticks; */ 99 360, /* 3 min */ /* short p_inact_ticks; */ 100 101 (short) 100, /* short p_lcdtfract */ 102 (short) TP_SOCKBUFSIZE, /* short p_winsize */ 103 TP_TPDUSIZE, /* u_char p_tpdusize */ 104 105 TPACK_WINDOW, /* 4 bits p_ack_strat */ 106 TPRX_USE_CW | TPRX_FASTSTART, 107 /* 4 bits p_rx_strat*/ 108 TP_CLASS_4 | TP_CLASS_0,/* 5 bits p_class */ 109 1, /* 1 bit xtd format */ 110 1, /* 1 bit xpd service */ 111 1, /* 1 bit use_checksum */ 112 0, /* 1 bit use net xpd */ 113 0, /* 1 bit use rcc */ 114 0, /* 1 bit use efc */ 115 1, /* no disc indications */ 116 0, /* don't change params */ 117 ISO_CLNS, /* p_netservice */ 118 }, 119 /* IN_CLNS: TP4 CONNECTION LESS */ 120 { 121 TP_NRETRANS, /* short p_Nretrans; */ 122 20, /* 10 sec */ /* short p_dr_ticks; */ 123 124 20, /* 10 sec */ /* short p_cc_ticks; */ 125 20, /* 10 sec */ /* short p_dt_ticks; */ 126 127 40, /* 20 sec */ /* short p_x_ticks; */ 128 80, /* 40 sec */ /* short p_cr_ticks;*/ 129 130 240, /* 2 min */ /* short p_keepalive_ticks;*/ 131 10, /* 5 sec */ /* short p_sendack_ticks; */ 132 133 600, /* 5 min */ /* short p_ref_ticks; */ 134 360, /* 3 min */ /* short p_inact_ticks; */ 135 136 (short) 100, /* short p_lcdtfract */ 137 (short) TP_SOCKBUFSIZE, /* short p_winsize */ 138 TP_TPDUSIZE, /* u_char p_tpdusize */ 139 140 TPACK_WINDOW, /* 4 bits p_ack_strat */ 141 TPRX_USE_CW | TPRX_FASTSTART, 142 /* 4 bits p_rx_strat*/ 143 TP_CLASS_4, /* 5 bits p_class */ 144 1, /* 1 bit xtd format */ 145 1, /* 1 bit xpd service */ 146 1, /* 1 bit use_checksum */ 147 0, /* 1 bit use net xpd */ 148 0, /* 1 bit use rcc */ 149 0, /* 1 bit use efc */ 150 1, /* no disc indications */ 151 0, /* don't change params */ 152 IN_CLNS, /* p_netservice */ 153 }, 154 /* ISO_CONS: TP0 CONNECTION MODE */ 155 { 156 TP_NRETRANS, /* short p_Nretrans; */ 157 0, /* n/a */ /* short p_dr_ticks; */ 158 159 40, /* 20 sec */ /* short p_cc_ticks; */ 160 0, /* n/a */ /* short p_dt_ticks; */ 161 162 0, /* n/a */ /* short p_x_ticks; */ 163 360, /* 3 min */ /* short p_cr_ticks;*/ 164 165 0, /* n/a */ /* short p_keepalive_ticks;*/ 166 0, /* n/a */ /* short p_sendack_ticks; */ 167 168 600, /* for cr/cc to clear *//* short p_ref_ticks; */ 169 0, /* n/a */ /* short p_inact_ticks; */ 170 171 /* Use tp4 defaults just in case the user changes ONLY 172 * the class 173 */ 174 (short) 100, /* short p_lcdtfract */ 175 (short) TP0_SOCKBUFSIZE, /* short p_winsize */ 176 TP0_TPDUSIZE, /* 8 bits p_tpdusize */ 177 178 0, /* 4 bits p_ack_strat */ 179 0, /* 4 bits p_rx_strat*/ 180 TP_CLASS_0, /* 5 bits p_class */ 181 0, /* 1 bit xtd format */ 182 0, /* 1 bit xpd service */ 183 0, /* 1 bit use_checksum */ 184 0, /* 1 bit use net xpd */ 185 0, /* 1 bit use rcc */ 186 0, /* 1 bit use efc */ 187 0, /* no disc indications */ 188 0, /* don't change params */ 189 ISO_CONS, /* p_netservice */ 190 }, 191 /* ISO_COSNS: TP4 CONNECTION LESS SERVICE over CONSNS */ 192 { 193 TP_NRETRANS, /* short p_Nretrans; */ 194 40, /* 20 sec */ /* short p_dr_ticks; */ 195 196 40, /* 20 sec */ /* short p_cc_ticks; */ 197 80, /* 40 sec */ /* short p_dt_ticks; */ 198 199 120, /* 1 min */ /* short p_x_ticks; */ 200 360, /* 3 min */ /* short p_cr_ticks;*/ 201 202 360, /* 3 min */ /* short p_keepalive_ticks;*/ 203 20, /* 10 sec */ /* short p_sendack_ticks; */ 204 205 600, /* 5 min */ /* short p_ref_ticks; */ 206 480, /* 4 min */ /* short p_inact_ticks; */ 207 208 (short) 100, /* short p_lcdtfract */ 209 (short) TP0_SOCKBUFSIZE, /* short p_winsize */ 210 TP0_TPDUSIZE, /* u_char p_tpdusize */ 211 212 TPACK_WINDOW, /* 4 bits p_ack_strat */ 213 TPRX_USE_CW , /* No fast start */ 214 /* 4 bits p_rx_strat*/ 215 TP_CLASS_4 | TP_CLASS_0,/* 5 bits p_class */ 216 0, /* 1 bit xtd format */ 217 1, /* 1 bit xpd service */ 218 1, /* 1 bit use_checksum */ 219 0, /* 1 bit use net xpd */ 220 0, /* 1 bit use rcc */ 221 0, /* 1 bit use efc */ 222 0, /* no disc indications */ 223 0, /* don't change params */ 224 ISO_COSNS, /* p_netservice */ 225 }, 226 }; 227 228 #ifdef INET 229 int in_putnetaddr(); 230 int in_getnetaddr(); 231 int in_cmpnetaddr(); 232 int in_putsufx(); 233 int in_getsufx(); 234 int in_recycle_tsuffix(); 235 int tpip_mtu(); 236 int in_pcbbind(); 237 int in_pcbconnect(); 238 int in_pcbdisconnect(); 239 int in_pcbdetach(); 240 int in_pcballoc(); 241 int tpip_output(); 242 int tpip_output_dg(); 243 struct inpcb tp_inpcb; 244 #endif /* INET */ 245 #ifdef ISO 246 int iso_putnetaddr(); 247 int iso_getnetaddr(); 248 int iso_cmpnetaddr(); 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 #ifdef TPCONS 264 int iso_putnetaddr(); 265 int iso_getnetaddr(); 266 int iso_cmpnetaddr(); 267 int iso_putsufx(); 268 int iso_getsufx(); 269 int iso_recycle_tsuffix(); 270 int iso_pcbbind(); 271 int tpcons_pcbconnect(); 272 int tpclnp_mtu(); 273 int iso_pcbdisconnect(); 274 int iso_pcbdetach(); 275 int iso_pcballoc(); 276 int tpcons_output(); 277 struct isopcb tp_isopcb; 278 #endif /* TPCONS */ 279 280 281 struct nl_protosw nl_protosw[] = { 282 /* ISO_CLNS */ 283 #ifdef ISO 284 { AF_ISO, iso_putnetaddr, iso_getnetaddr, iso_cmpnetaddr, 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 }, 293 #else 294 { 0 }, 295 #endif /* ISO */ 296 /* IN_CLNS */ 297 #ifdef INET 298 { AF_INET, in_putnetaddr, in_getnetaddr, in_cmpnetaddr, 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 }, 307 #else 308 { 0 }, 309 #endif /* INET */ 310 /* ISO_CONS */ 311 #if defined(ISO) && defined(TPCONS) 312 { AF_ISO, iso_putnetaddr, iso_getnetaddr, iso_cmpnetaddr, 313 iso_putsufx, iso_getsufx, 314 iso_recycle_tsuffix, 315 tpclnp_mtu, iso_pcbbind, tpcons_pcbconnect, 316 iso_pcbdisconnect, iso_pcbdetach, 317 iso_pcballoc, 318 tpcons_output, tpcons_output, iso_nlctloutput, 319 (caddr_t) &tp_isopcb, 320 }, 321 #else 322 { 0 }, 323 #endif /* ISO_CONS */ 324 /* End of protosw marker */ 325 { 0 } 326 }; 327 328 u_long tp_sendspace = 1024 * 4; 329 u_long tp_recvspace = 1024 * 4; 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 */ 346 int 347 tp_init() 348 { 349 static int init_done=0; 350 void tp_timerinit(); 351 352 if (init_done++) 353 return 0; 354 355 356 /* 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; 360 361 tp_start_win = 2; 362 363 tp_timerinit(); 364 bzero((caddr_t)&tp_stat, sizeof(struct tp_stat)); 365 return 0; 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 { 392 soisdisconnecting(so); 393 so->so_state &= ~SS_CANTSENDMORE; 394 IFPERF(sototpcb(so)) 395 register struct tp_pcb *tpcb = sototpcb(so); 396 u_int fsufx, lsufx; 397 398 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) ); 400 401 tpmeas(tpcb->tp_lref, TPtime_close, &time, fsufx, lsufx, tpcb->tp_fref); 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; 435 436 soisdisconnecting(so); 437 so->so_state &= ~SS_CANTSENDMORE; 438 IFPERF(tpcb) 439 register struct tp_pcb *ttpcb = sototpcb(so); 440 u_int fsufx, lsufx; 441 442 /* CHOKE */ 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) ); 445 446 tpmeas(ttpcb->tp_lref, TPtime_close, 447 &time, &lsufx, &fsufx, ttpcb->tp_fref); 448 tpcb->tp_perf_on = 0; /* turn perf off */ 449 ENDPERF 450 451 tpcb->tp_refstate = REF_FROZEN; 452 tp_recycle_tsuffix(tpcb); 453 tp_etimeout(tpcb, TM_reference, (int)tpcb->tp_refer_ticks); 454 } 455 456 /* 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(n) 476 RefNum n; 477 { 478 register struct tp_ref *r = tp_ref + n; 479 register struct tp_pcb *tpcb; 480 481 tpcb = r->tpr_pcb; 482 IFDEBUG(D_TIMER) 483 printf("tp_freeref called for ref %d pcb %x maxrefopen %d\n", 484 n, tpcb, tp_refinfo.tpr_maxopen); 485 ENDDEBUG 486 IFTRACE(D_TIMER) 487 tptrace(TPPTmisc, "tp_freeref ref maxrefopen pcb", 488 n, tp_refinfo.tpr_maxopen, tpcb, 0); 489 ENDTRACE 490 if (tpcb == 0) 491 return; 492 IFDEBUG(D_CONN) 493 printf("tp_freeref: CLEARING tpr_pcb 0x%x\n", tpcb); 494 ENDDEBUG 495 r->tpr_pcb = (struct tp_pcb *)0; 496 tpcb->tp_refstate = REF_FREE; 497 498 for (r = tp_ref + tp_refinfo.tpr_maxopen; r > tp_ref; r--) 499 if (r->tpr_pcb) 500 break; 501 tp_refinfo.tpr_maxopen = r - tp_ref; 502 tp_refinfo.tpr_numopen--; 503 504 IFDEBUG(D_TIMER) 505 printf("tp_freeref ends w/ maxrefopen %d\n", tp_refinfo.tpr_maxopen); 506 ENDDEBUG 507 } 508 509 /* 510 * NAME: tp_getref() 511 * 512 * CALLED FROM: 513 * tp_attach() 514 * 515 * FUNCTION and ARGUMENTS: 516 * obtains the next free reference and allocates the appropriate 517 * ref structure, links that structure to (tpcb) 518 * 519 * RETURN VALUE: 520 * a reference number 521 * or TP_ENOREF 522 * 523 * SIDE EFFECTS: 524 * 525 * NOTES: 526 */ 527 u_long 528 tp_getref(tpcb) 529 register struct tp_pcb *tpcb; 530 { 531 register struct tp_ref *r, *rlim; 532 register int i; 533 caddr_t obase; 534 unsigned size; 535 536 if (++tp_refinfo.tpr_numopen < tp_refinfo.tpr_size) 537 for (r = tp_refinfo.tpr_base, rlim = r + tp_refinfo.tpr_size; 538 ++r < rlim; ) /* tp_ref[0] is never used */ 539 if (r->tpr_pcb == 0) 540 goto got_one; 541 /* else have to allocate more space */ 542 543 obase = (caddr_t)tp_refinfo.tpr_base; 544 size = tp_refinfo.tpr_size * sizeof(struct tp_ref); 545 r = (struct tp_ref *) malloc(size + size, M_PCB, M_NOWAIT); 546 if (r == 0) 547 return (--tp_refinfo.tpr_numopen, TP_ENOREF); 548 tp_refinfo.tpr_base = tp_ref = r; 549 tp_refinfo.tpr_size *= 2; 550 bcopy(obase, (caddr_t)r, size); 551 free(obase, M_PCB); 552 r = (struct tp_ref *)(size + (caddr_t)r); 553 bzero((caddr_t)r, size); 554 555 got_one: 556 r->tpr_pcb = tpcb; 557 tpcb->tp_refstate = REF_OPENING; 558 i = r - tp_refinfo.tpr_base; 559 if (tp_refinfo.tpr_maxopen < i) 560 tp_refinfo.tpr_maxopen = i; 561 return (u_long)i; 562 } 563 564 /* 565 * NAME: tp_set_npcb() 566 * 567 * CALLED FROM: 568 * tp_attach(), tp_route_to() 569 * 570 * FUNCTION and ARGUMENTS: 571 * given a tpcb, allocate an appropriate lower-lever npcb, freeing 572 * any old ones that might need re-assigning. 573 */ 574 tp_set_npcb(tpcb) 575 register struct tp_pcb *tpcb; 576 { 577 register struct socket *so = tpcb->tp_sock; 578 int error; 579 580 if (tpcb->tp_nlproto && tpcb->tp_npcb) { 581 short so_state = so->so_state; 582 so->so_state &= ~SS_NOFDREF; 583 tpcb->tp_nlproto->nlp_pcbdetach(tpcb->tp_npcb); 584 so->so_state = so_state; 585 } 586 tpcb->tp_nlproto = &nl_protosw[tpcb->tp_netservice]; 587 /* xx_pcballoc sets so_pcb */ 588 error = tpcb->tp_nlproto->nlp_pcballoc(so, tpcb->tp_nlproto->nlp_pcblist); 589 tpcb->tp_npcb = so->so_pcb; 590 so->so_pcb = (caddr_t)tpcb; 591 return (error); 592 } 593 /* 594 * NAME: tp_attach() 595 * 596 * CALLED FROM: 597 * tp_usrreq, PRU_ATTACH 598 * 599 * FUNCTION and ARGUMENTS: 600 * given a socket (so) and a protocol family (dom), allocate a tpcb 601 * and ref structure, initialize everything in the structures that 602 * needs to be initialized. 603 * 604 * RETURN VALUE: 605 * 0 ok 606 * EINVAL if DEBUG(X) in is on and a disaster has occurred 607 * ENOPROTOOPT if TP hasn't been configured or if the 608 * socket wasn't created with tp as its protocol 609 * EISCONN if this socket is already part of a connection 610 * ETOOMANYREFS if ran out of tp reference numbers. 611 * E* whatever error is returned from soreserve() 612 * for from the network-layer pcb allocation routine 613 * 614 * SIDE EFFECTS: 615 * 616 * NOTES: 617 */ 618 tp_attach(so, protocol) 619 struct socket *so; 620 int protocol; 621 { 622 register struct tp_pcb *tpcb; 623 int error = 0; 624 int dom = so->so_proto->pr_domain->dom_family; 625 u_long lref; 626 extern struct tp_conn_param tp_conn_param[]; 627 628 IFDEBUG(D_CONN) 629 printf("tp_attach:dom 0x%x so 0x%x ", dom, so); 630 ENDDEBUG 631 IFTRACE(D_CONN) 632 tptrace(TPPTmisc, "tp_attach:dom so", dom, so, 0, 0); 633 ENDTRACE 634 635 if (so->so_pcb != NULL) { 636 return EISCONN; /* socket already part of a connection*/ 637 } 638 639 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) 640 error = soreserve(so, tp_sendspace, tp_recvspace); 641 /* later an ioctl will allow reallocation IF still in closed state */ 642 643 if (error) 644 goto bad2; 645 646 MALLOC(tpcb, struct tp_pcb *, sizeof(*tpcb), M_PCB, M_NOWAIT); 647 if (tpcb == NULL) { 648 error = ENOBUFS; 649 goto bad2; 650 } 651 bzero( (caddr_t)tpcb, sizeof (struct tp_pcb) ); 652 653 if ( ((lref = tp_getref(tpcb)) & TP_ENOREF) != 0 ) { 654 error = ETOOMANYREFS; 655 goto bad3; 656 } 657 tpcb->tp_lref = lref; 658 tpcb->tp_sock = so; 659 tpcb->tp_domain = dom; 660 tpcb->tp_rhiwat = so->so_rcv.sb_hiwat; 661 /* tpcb->tp_proto = protocol; someday maybe? */ 662 if (protocol && protocol<ISOPROTO_TP4) { 663 tpcb->tp_netservice = ISO_CONS; 664 tpcb->tp_snduna = (SeqNum) -1;/* kludge so the pseudo-ack from the CR/CC 665 * will generate correct fake-ack values 666 */ 667 } else { 668 tpcb->tp_netservice = (dom== AF_INET)?IN_CLNS:ISO_CLNS; 669 /* the default */ 670 } 671 tpcb->_tp_param = tp_conn_param[tpcb->tp_netservice]; 672 673 tpcb->tp_state = TP_CLOSED; 674 tpcb->tp_vers = TP_VERSION; 675 tpcb->tp_notdetached = 1; 676 677 /* Spec says default is 128 octets, 678 * that is, if the tpdusize argument never appears, use 128. 679 * As the initiator, we will always "propose" the 2048 680 * size, that is, we will put this argument in the CR 681 * always, but accept what the other side sends on the CC. 682 * If the initiator sends us something larger on a CR, 683 * we'll respond w/ this. 684 * Our maximum is 4096. See tp_chksum.c comments. 685 */ 686 tpcb->tp_cong_win = 687 tpcb->tp_l_tpdusize = 1 << tpcb->tp_tpdusize; 688 689 tpcb->tp_seqmask = TP_NML_FMT_MASK; 690 tpcb->tp_seqbit = TP_NML_FMT_BIT; 691 tpcb->tp_seqhalf = tpcb->tp_seqbit >> 1; 692 693 /* attach to a network-layer protoswitch */ 694 if ( error = tp_set_npcb(tpcb)) 695 goto bad4; 696 ASSERT( tpcb->tp_nlproto->nlp_afamily == tpcb->tp_domain); 697 698 /* nothing to do for iso case */ 699 if( dom == AF_INET ) 700 sotoinpcb(so)->inp_ppcb = (caddr_t) tpcb; 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_lref); 709 710 bad3: 711 IFDEBUG(D_CONN) 712 printf("BAD3 in tp_attach, so 0x%x\n", so); 713 ENDDEBUG 714 715 free((caddr_t)tpcb, M_PCB); /* never a cluster */ 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; 722 723 /*bad:*/ 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 { 757 void tp_freeref(), tp_rsyflush(); 758 register struct socket *so = tpcb->tp_sock; 759 760 IFDEBUG(D_CONN) 761 printf("tp_detach(tpcb 0x%x, so 0x%x)\n", 762 tpcb,so); 763 ENDDEBUG 764 IFTRACE(D_CONN) 765 tptraceTPCB(TPPTmisc, "tp_detach tpcb so lsufx", 766 tpcb, so, *(u_short *)(tpcb->tp_lsuffix), 0); 767 ENDTRACE 768 769 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 775 776 if (tpcb->tp_Xsnd.sb_mb) { 777 printf("Unsent Xdata on detach; would panic"); 778 sbflush(&tpcb->tp_Xsnd); 779 } 780 if (tpcb->tp_ucddata) 781 m_freem(tpcb->tp_ucddata); 782 783 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); 789 790 if (tpcb->tp_next) { 791 remque(tpcb); 792 tpcb->tp_next = tpcb->tp_prev = 0; 793 } 794 tpcb->tp_notdetached = 0; 795 796 IFDEBUG(D_CONN) 797 printf("calling (...nlproto->...)(0x%x, so 0x%x)\n", 798 tpcb->tp_npcb, so); 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 803 804 (tpcb->tp_nlproto->nlp_pcbdetach)(tpcb->tp_npcb); 805 /* does an so->so_pcb = 0; sofree(so) */ 806 807 IFDEBUG(D_CONN) 808 printf("after xxx_pcbdetach\n"); 809 ENDDEBUG 810 811 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 } 821 if (tpcb->tp_refstate == REF_OPENING ) { 822 /* no connection existed here so no reference timer will be called */ 823 IFDEBUG(D_CONN) 824 printf("SETTING ref %d to REF_FREE\n", tpcb->tp_lref); 825 ENDDEBUG 826 827 tp_freeref(tpcb->tp_lref); 828 } 829 #ifdef TP_PERF_MEAS 830 /* 831 * Get rid of the cluster mbuf allocated for performance measurements, if 832 * there is one. Note that tpcb->tp_perf_on says nothing about whether or 833 * not a cluster mbuf was allocated, so you have to check for a pointer 834 * to one (that is, we need the TP_PERF_MEASs around the following section 835 * of code, not the IFPERFs) 836 */ 837 if (tpcb->tp_p_mbuf) { 838 register struct mbuf *m = tpcb->tp_p_mbuf; 839 struct mbuf *n; 840 IFDEBUG(D_PERF_MEAS) 841 printf("freeing tp_p_meas 0x%x ", tpcb->tp_p_meas); 842 ENDDEBUG 843 do { 844 MFREE(m, n); 845 m = n; 846 } while (n); 847 tpcb->tp_p_meas = 0; 848 tpcb->tp_p_mbuf = 0; 849 } 850 #endif /* TP_PERF_MEAS */ 851 852 IFDEBUG(D_CONN) 853 printf( "end of detach, NOT single, tpcb 0x%x\n", tpcb); 854 ENDDEBUG 855 /* free((caddr_t)tpcb, M_PCB); WHere to put this ? */ 856 } 857 858 struct que { 859 struct tp_pcb *next; 860 struct tp_pcb *prev; 861 } tp_bound_pcbs = 862 {(struct tp_pcb *)&tp_bound_pcbs, (struct tp_pcb *)&tp_bound_pcbs}; 863 864 u_short tp_unique; 865 866 tp_tselinuse(tlen, tsel, siso, reuseaddr) 867 caddr_t tsel; 868 register struct sockaddr_iso *siso; 869 { 870 struct tp_pcb *b = tp_bound_pcbs.next, *l = tp_listeners; 871 register struct tp_pcb *t; 872 873 for (;;) { 874 if (b != (struct tp_pcb *)&tp_bound_pcbs) { 875 t = b; b = t->tp_next; 876 } else if (l) { 877 t = l; l = t->tp_nextlisten; 878 } else 879 break; 880 if (tlen == t->tp_lsuffixlen && bcmp(tsel, t->tp_lsuffix, tlen) == 0) { 881 if (t->tp_flags & TPF_GENERAL_ADDR) { 882 if (siso == 0 || reuseaddr == 0) 883 return 1; 884 } else if (siso) { 885 if (siso->siso_family == t->tp_domain && 886 t->tp_nlproto->nlp_cmpnetaddr(t->tp_npcb, siso, TP_LOCAL)) 887 return 1; 888 } else if (reuseaddr == 0) 889 return 1; 890 } 891 } 892 return 0; 893 894 } 895 896 897 tp_pcbbind(tpcb, nam) 898 register struct tp_pcb *tpcb; 899 register struct mbuf *nam; 900 { 901 register struct sockaddr_iso *siso = 0; 902 int tlen = 0, wrapped = 0; 903 caddr_t tsel; 904 u_short tutil; 905 906 if (tpcb->tp_state != TP_CLOSED) 907 return (EINVAL); 908 if (nam) { 909 siso = mtod(nam, struct sockaddr_iso *); 910 switch (siso->siso_family) { 911 default: 912 return (EAFNOSUPPORT); 913 #ifdef ISO 914 case AF_ISO: 915 tlen = siso->siso_tlen; 916 tsel = TSEL(siso); 917 if (siso->siso_nlen == 0) 918 siso = 0; 919 break; 920 #endif 921 #ifdef INET 922 case AF_INET: 923 tsel = (caddr_t)&tutil; 924 if (tutil = ((struct sockaddr_in *)siso)->sin_port) { 925 tlen = 2; 926 } 927 if (((struct sockaddr_in *)siso)->sin_addr.s_addr == 0) 928 siso = 0; 929 } 930 #endif 931 } 932 if (tpcb->tp_lsuffixlen == 0) { 933 if (tlen) { 934 if (tp_tselinuse(tlen, tsel, siso, 935 tpcb->tp_sock->so_options & SO_REUSEADDR)) 936 return (EINVAL); 937 } else { 938 for (tsel = (caddr_t)&tutil, 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 } 945 tutil = htons(tp_unique); 946 if (tp_tselinuse(tlen, tsel, siso, 0) == 0) 947 break; 948 } 949 if (siso) switch (siso->siso_family) { 950 #ifdef ISO 951 case AF_ISO: 952 bcopy(tsel, TSEL(siso), tlen); 953 siso->siso_tlen = tlen; 954 break; 955 #endif 956 #ifdef INET 957 case AF_INET: 958 ((struct sockaddr_in *)siso)->sin_port = tutil; 959 #endif 960 } 961 } 962 bcopy(tsel, tpcb->tp_lsuffix, (tpcb->tp_lsuffixlen = tlen)); 963 insque(tpcb, &tp_bound_pcbs); 964 } else { 965 if (tlen || siso == 0) 966 return (EINVAL); 967 } 968 if (siso == 0) { 969 tpcb->tp_flags |= TPF_GENERAL_ADDR; 970 return (0); 971 } 972 return tpcb->tp_nlproto->nlp_pcbbind(tpcb->tp_npcb, nam); 973 } 974