1 /*- 2 * Copyright (c) 1991 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)tp_usrreq.c 7.19 (Berkeley) 07/23/91 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_usrreq.c,v 5.4 88/11/18 17:29:18 nhall Exp $ 40 * $Source: /usr/argo/sys/netiso/RCS/tp_usrreq.c,v $ 41 * 42 * tp_usrreq(), the fellow that gets called from most of the socket code. 43 * Pretty straighforward. 44 * THe only really awful stuff here is the OOB processing, which is done 45 * wholly here. 46 * tp_rcvoob() and tp_sendoob() are contained here and called by tp_usrreq(). 47 */ 48 49 #include "param.h" 50 #include "systm.h" 51 #include "mbuf.h" 52 #include "socket.h" 53 #include "socketvar.h" 54 #include "domain.h" 55 #include "protosw.h" 56 #include "errno.h" 57 #include "time.h" 58 59 #include "tp_param.h" 60 #include "tp_timer.h" 61 #include "tp_stat.h" 62 #include "tp_seq.h" 63 #include "tp_ip.h" 64 #include "tp_pcb.h" 65 #include "argo_debug.h" 66 #include "tp_trace.h" 67 #include "tp_meas.h" 68 #include "iso.h" 69 #include "iso_errno.h" 70 71 int tp_attach(), tp_driver(), tp_pcbbind(); 72 int TNew; 73 int TPNagle1, TPNagle2; 74 struct tp_pcb *tp_listeners, *tp_intercepts; 75 76 #ifdef ARGO_DEBUG 77 /* 78 * CALLED FROM: 79 * anywhere you want to debug... 80 * FUNCTION and ARGUMENTS: 81 * print (str) followed by the control info in the mbufs of an mbuf chain (n) 82 */ 83 void 84 dump_mbuf(n, str) 85 struct mbuf *n; 86 char *str; 87 { 88 struct mbuf *nextrecord; 89 90 printf("dump %s\n", str); 91 92 if (n == MNULL) { 93 printf("EMPTY:\n"); 94 return; 95 } 96 97 while (n) { 98 nextrecord = n->m_act; 99 printf("RECORD:\n"); 100 while (n) { 101 printf("%x : Len %x Data %x A %x Nx %x Tp %x\n", 102 n, n->m_len, n->m_data, n->m_act, n->m_next, n->m_type); 103 #ifdef notdef 104 { 105 register char *p = mtod(n, char *); 106 register int i; 107 108 printf("data: "); 109 for (i = 0; i < n->m_len; i++) { 110 if (i%8 == 0) 111 printf("\n"); 112 printf("0x%x ", *(p+i)); 113 } 114 printf("\n"); 115 } 116 #endif notdef 117 if (n->m_next == n) { 118 printf("LOOP!\n"); 119 return; 120 } 121 n = n->m_next; 122 } 123 n = nextrecord; 124 } 125 printf("\n"); 126 } 127 128 #endif ARGO_DEBUG 129 130 /* 131 * CALLED FROM: 132 * tp_usrreq(), PRU_RCVOOB 133 * FUNCTION and ARGUMENTS: 134 * Copy data from the expedited data socket buffer into 135 * the pre-allocated mbuf m. 136 * There is an isomorphism between XPD TPDUs and expedited data TSDUs. 137 * XPD tpdus are limited to 16 bytes of data so they fit in one mbuf. 138 * RETURN VALUE: 139 * EINVAL if debugging is on and a disaster has occurred 140 * ENOTCONN if the socket isn't connected 141 * EWOULDBLOCK if the socket is in non-blocking mode and there's no 142 * xpd data in the buffer 143 * E* whatever is returned from the fsm. 144 */ 145 tp_rcvoob(tpcb, so, m, outflags, inflags) 146 struct tp_pcb *tpcb; 147 register struct socket *so; 148 register struct mbuf *m; 149 int *outflags; 150 int inflags; 151 { 152 register struct mbuf *n; 153 register struct sockbuf *sb = &so->so_rcv; 154 struct tp_event E; 155 int error = 0; 156 register struct mbuf **nn; 157 158 IFDEBUG(D_XPD) 159 printf("PRU_RCVOOB, sostate 0x%x\n", so->so_state); 160 ENDDEBUG 161 162 /* if you use soreceive */ 163 if (m == MNULL) 164 return ENOBUFS; 165 166 restart: 167 if ((((so->so_state & SS_ISCONNECTED) == 0) 168 || (so->so_state & SS_ISDISCONNECTING) != 0) && 169 (so->so_proto->pr_flags & PR_CONNREQUIRED)) { 170 return ENOTCONN; 171 } 172 173 /* Take the first mbuf off the chain. 174 * Each XPD TPDU gives you a complete TSDU so the chains don't get 175 * coalesced, but one TSDU may span several mbufs. 176 * Nevertheless, since n should have a most 16 bytes, it 177 * will fit into m. (size was checked in tp_input() ) 178 */ 179 180 /* 181 * Code for excision of OOB data should be added to 182 * uipc_socket2.c (like sbappend). 183 */ 184 185 sblock(sb); 186 for (nn = &sb->sb_mb; n = *nn; nn = &n->m_act) 187 if (n->m_type == MT_OOBDATA) 188 break; 189 190 if (n == 0) { 191 IFDEBUG(D_XPD) 192 printf("RCVOOB: empty queue!\n"); 193 ENDDEBUG 194 sbunlock(sb); 195 if (so->so_state & SS_NBIO) { 196 return EWOULDBLOCK; 197 } 198 sbwait(sb); 199 goto restart; 200 } 201 m->m_len = 0; 202 203 /* Assuming at most one xpd tpdu is in the buffer at once */ 204 while (n != MNULL) { 205 m->m_len += n->m_len; 206 bcopy(mtod(n, caddr_t), mtod(m, caddr_t), (unsigned)n->m_len); 207 m->m_data += n->m_len; /* so mtod() in bcopy() above gives right addr */ 208 n = n->m_next; 209 } 210 m->m_data = m->m_dat; 211 m->m_flags |= M_EOR; 212 213 IFDEBUG(D_XPD) 214 printf("tp_rcvoob: xpdlen 0x%x\n", m->m_len); 215 dump_mbuf(so->so_rcv.sb_mb, "RCVOOB: Rcv socketbuf"); 216 dump_mbuf(sb->sb_mb, "RCVOOB: Xrcv socketbuf"); 217 ENDDEBUG 218 219 if ((inflags & MSG_PEEK) == 0) { 220 n = *nn; 221 *nn = n->m_act; 222 sb->sb_cc -= m->m_len; 223 } 224 225 release: 226 sbunlock(sb); 227 228 IFTRACE(D_XPD) 229 tptraceTPCB(TPPTmisc, "PRU_RCVOOB @ release sb_cc m_len", 230 tpcb->tp_Xrcv.sb_cc, m->m_len, 0, 0); 231 ENDTRACE 232 if (error == 0) 233 error = DoEvent(T_USR_Xrcvd); 234 return error; 235 } 236 237 /* 238 * CALLED FROM: 239 * tp_usrreq(), PRU_SENDOOB 240 * FUNCTION and ARGUMENTS: 241 * Send what's in the mbuf chain (m) as an XPD TPDU. 242 * The mbuf may not contain more then 16 bytes of data. 243 * XPD TSDUs aren't segmented, so they translate into 244 * exactly one XPD TPDU, with EOT bit set. 245 * RETURN VALUE: 246 * EWOULDBLOCK if socket is in non-blocking mode and the previous 247 * xpd data haven't been acked yet. 248 * EMSGSIZE if trying to send > max-xpd bytes (16) 249 * ENOBUFS if ran out of mbufs 250 */ 251 tp_sendoob(tpcb, so, xdata, outflags) 252 struct tp_pcb *tpcb; 253 register struct socket *so; 254 register struct mbuf *xdata; 255 int *outflags; /* not used */ 256 { 257 /* 258 * Each mbuf chain represents a sequence # in the XPD seq space. 259 * The first one in the queue has sequence # tp_Xuna. 260 * When we add to the XPD queue, we stuff a zero-length 261 * mbuf (mark) into the DATA queue, with its sequence number in m_next 262 * to be assigned to this XPD tpdu, so data xfer can stop 263 * when it reaches the zero-length mbuf if this XPD TPDU hasn't 264 * yet been acknowledged. 265 */ 266 register struct sockbuf *sb = &(tpcb->tp_Xsnd); 267 register struct mbuf *xmark; 268 register int len=0; 269 struct tp_event E; 270 271 IFDEBUG(D_XPD) 272 printf("tp_sendoob:"); 273 if (xdata) 274 printf("xdata len 0x%x\n", xdata->m_len); 275 ENDDEBUG 276 /* DO NOT LOCK the Xsnd buffer!!!! You can have at MOST one 277 * socket buf locked at any time!!! (otherwise you might 278 * sleep() in sblock() w/ a signal pending and cause the 279 * system call to be aborted w/ a locked socketbuf, which 280 * is a problem. So the so_snd buffer lock 281 * (done in sosend()) serves as the lock for Xpd. 282 */ 283 if (sb->sb_mb) { /* Anything already in eXpedited data sockbuf? */ 284 if (so->so_state & SS_NBIO) { 285 return EWOULDBLOCK; 286 } 287 while (sb->sb_mb) { 288 sbunlock(&so->so_snd); /* already locked by sosend */ 289 sbwait(&so->so_snd); 290 sblock(&so->so_snd); /* sosend will unlock on return */ 291 } 292 } 293 294 if (xdata == (struct mbuf *)0) { 295 /* empty xpd packet */ 296 MGETHDR(xdata, M_WAIT, MT_OOBDATA); 297 if (xdata == NULL) { 298 return ENOBUFS; 299 } 300 xdata->m_len = 0; 301 xdata->m_pkthdr.len = 0; 302 } 303 IFDEBUG(D_XPD) 304 printf("tp_sendoob 1:"); 305 if (xdata) 306 printf("xdata len 0x%x\n", xdata->m_len); 307 ENDDEBUG 308 xmark = xdata; /* temporary use of variable xmark */ 309 while (xmark) { 310 len += xmark->m_len; 311 xmark = xmark->m_next; 312 } 313 if (len > TP_MAX_XPD_DATA) { 314 return EMSGSIZE; 315 } 316 IFDEBUG(D_XPD) 317 printf("tp_sendoob 2:"); 318 if (xdata) 319 printf("xdata len 0x%x\n", len); 320 ENDDEBUG 321 322 323 IFTRACE(D_XPD) 324 tptraceTPCB(TPPTmisc, "XPD mark m_next ", xdata->m_next, 0, 0, 0); 325 ENDTRACE 326 327 sbappendrecord(sb, xdata); 328 329 IFDEBUG(D_XPD) 330 printf("tp_sendoob len 0x%x\n", len); 331 dump_mbuf(so->so_snd.sb_mb, "XPD request Regular sndbuf:"); 332 dump_mbuf(tpcb->tp_Xsnd.sb_mb, "XPD request Xsndbuf:"); 333 ENDDEBUG 334 return DoEvent(T_XPD_req); 335 } 336 337 /* 338 * CALLED FROM: 339 * the socket routines 340 * FUNCTION and ARGUMENTS: 341 * Handles all "user requests" except the [gs]ockopts() requests. 342 * The argument (req) is the request type (PRU*), 343 * (m) is an mbuf chain, generally used for send and 344 * receive type requests only. 345 * (nam) is used for addresses usually, in particular for the bind request. 346 * 347 */ 348 /*ARGSUSED*/ 349 ProtoHook 350 tp_usrreq(so, req, m, nam, controlp) 351 struct socket *so; 352 u_int req; 353 struct mbuf *m, *nam, *controlp; 354 { 355 register struct tp_pcb *tpcb = sototpcb(so); 356 int s = splnet(); 357 int error = 0; 358 int flags, *outflags = &flags; 359 u_long eotsdu = 0; 360 struct tp_event E; 361 362 IFDEBUG(D_REQUEST) 363 printf("usrreq(0x%x,%d,0x%x,0x%x,0x%x)\n",so,req,m,nam,outflags); 364 if (so->so_error) 365 printf("WARNING!!! so->so_error is 0x%x\n", so->so_error); 366 ENDDEBUG 367 IFTRACE(D_REQUEST) 368 tptraceTPCB(TPPTusrreq, "req so m state [", req, so, m, 369 tpcb?tpcb->tp_state:0); 370 ENDTRACE 371 372 if ((u_int)tpcb == 0 && req != PRU_ATTACH) { 373 IFTRACE(D_REQUEST) 374 tptraceTPCB(TPPTusrreq, "req failed NO TPCB[", 0, 0, 0, 0); 375 ENDTRACE 376 splx(s); 377 return ENOTCONN; 378 } 379 380 switch (req) { 381 382 case PRU_ATTACH: 383 if (tpcb) { 384 error = EISCONN; 385 break; 386 } 387 if (error = tp_attach(so, so->so_proto->pr_domain->dom_family)) 388 break; 389 tpcb = sototpcb(so); 390 break; 391 392 case PRU_ABORT: /* called from close() */ 393 /* called for each incoming connect queued on the 394 * parent (accepting) socket 395 */ 396 if (tpcb->tp_state == TP_OPEN) { 397 E.ATTR(T_DISC_req).e_reason = E_TP_NO_SESSION; 398 error = DoEvent(T_DISC_req); /* pretend it was a close() */ 399 break; 400 } /* else DROP THROUGH */ 401 402 case PRU_DETACH: /* called from close() */ 403 /* called only after disconnect was called */ 404 if (tpcb->tp_state == TP_LISTENING) { 405 register struct tp_pcb **tt; 406 for (tt = &tp_listeners; *tt; tt = &((*tt)->tp_nextlisten)) 407 if (*tt == tpcb) 408 break; 409 if (*tt) 410 *tt = tpcb->tp_nextlisten; 411 else { 412 for (tt = &tp_intercepts; *tt; tt = &((*tt)->tp_nextlisten)) 413 if (*tt == tpcb) 414 break; 415 if (*tt) 416 *tt = tpcb->tp_nextlisten; 417 else 418 printf("tp_usrreq - detach: should panic\n"); 419 } 420 } 421 if (tpcb->tp_next) 422 remque(tpcb); 423 error = DoEvent(T_DETACH); 424 if (tpcb->tp_state == TP_CLOSED) { 425 free((caddr_t)tpcb, M_PCB); 426 tpcb = 0; 427 } 428 break; 429 430 case PRU_SHUTDOWN: 431 /* recv end may have been released; local credit might be zero */ 432 case PRU_DISCONNECT: 433 E.ATTR(T_DISC_req).e_reason = E_TP_NORMAL_DISC; 434 error = DoEvent(T_DISC_req); 435 break; 436 437 case PRU_BIND: 438 error = tp_pcbbind(tpcb, nam); 439 break; 440 441 case PRU_LISTEN: 442 if (tpcb->tp_state != TP_CLOSED || tpcb->tp_lsuffixlen == 0 || 443 tpcb->tp_next == 0) 444 error = EINVAL; 445 else { 446 remque(tpcb); 447 tpcb->tp_nextlisten = tp_listeners; 448 tpcb->tp_next = tpcb->tp_prev = tp_listeners = tpcb; 449 error = DoEvent(T_LISTEN_req); 450 } 451 break; 452 453 case PRU_CONNECT2: 454 error = EOPNOTSUPP; /* for unix domain sockets */ 455 break; 456 457 case PRU_CONNECT: 458 IFTRACE(D_CONN) 459 tptraceTPCB(TPPTmisc, 460 "PRU_CONNECT: so 0x%x *SHORT_LSUFXP(tpcb) 0x%x lsuflen 0x%x, class 0x%x", 461 tpcb->tp_sock, *SHORT_LSUFXP(tpcb), tpcb->tp_lsuffixlen, 462 tpcb->tp_class); 463 ENDTRACE 464 IFDEBUG(D_CONN) 465 printf("PRU_CONNECT: so *SHORT_LSUFXP(tpcb) 0x%x lsuflen 0x%x, class 0x%x", 466 tpcb->tp_sock, *SHORT_LSUFXP(tpcb), tpcb->tp_lsuffixlen, 467 tpcb->tp_class); 468 ENDDEBUG 469 if (tpcb->tp_lsuffixlen == 0) { 470 if (error = (tpcb->tp_nlproto->nlp_pcbbind)(tpcb->tp_npcb, MNULL)) { 471 IFDEBUG(D_CONN) 472 printf("pcbbind returns error 0x%x\n", error); 473 ENDDEBUG 474 break; 475 } 476 (tpcb->tp_nlproto->nlp_getsufx)(tpcb->tp_npcb, &tpcb->tp_lsuffixlen, 477 tpcb->tp_lsuffix, TP_LOCAL); 478 } 479 480 IFDEBUG(D_CONN) 481 printf("isop 0x%x isop->isop_socket offset 12 :\n", tpcb->tp_npcb); 482 dump_buf(tpcb->tp_npcb, 16); 483 ENDDEBUG 484 if (error = tp_route_to(nam, tpcb, /* channel */0)) 485 break; 486 IFDEBUG(D_CONN) 487 printf( 488 "PRU_CONNECT after tpcb 0x%x so 0x%x npcb 0x%x flags 0x%x\n", 489 tpcb, so, tpcb->tp_npcb, tpcb->tp_flags); 490 printf("isop 0x%x isop->isop_socket offset 12 :\n", tpcb->tp_npcb); 491 dump_buf(tpcb->tp_npcb, 16); 492 ENDDEBUG 493 if (tpcb->tp_fsuffixlen == 0) { 494 /* didn't set peer extended suffix */ 495 (tpcb->tp_nlproto->nlp_getsufx)(tpcb->tp_npcb, &tpcb->tp_fsuffixlen, 496 tpcb->tp_fsuffix, TP_FOREIGN); 497 } 498 (void) (tpcb->tp_nlproto->nlp_mtu)(so, tpcb->tp_npcb, 499 &tpcb->tp_l_tpdusize, &tpcb->tp_tpdusize, 0); 500 if (tpcb->tp_state == TP_CLOSED) { 501 soisconnecting(so); 502 error = DoEvent(T_CONN_req); 503 } else { 504 (tpcb->tp_nlproto->nlp_pcbdisc)(tpcb->tp_npcb); 505 error = EISCONN; 506 } 507 IFPERF(tpcb) 508 u_int lsufx, fsufx; 509 lsufx = *(u_short *)(tpcb->tp_lsuffix); 510 fsufx = *(u_short *)(tpcb->tp_fsuffix); 511 512 tpmeas(tpcb->tp_lref, 513 TPtime_open | (tpcb->tp_xtd_format << 4), 514 &time, lsufx, fsufx, tpcb->tp_fref); 515 ENDPERF 516 break; 517 518 case PRU_ACCEPT: 519 (tpcb->tp_nlproto->nlp_getnetaddr)(tpcb->tp_npcb, nam, TP_FOREIGN); 520 IFDEBUG(D_REQUEST) 521 printf("ACCEPT PEERADDDR:"); 522 dump_buf(mtod(nam, char *), nam->m_len); 523 ENDDEBUG 524 IFPERF(tpcb) 525 u_int lsufx, fsufx; 526 lsufx = *(u_short *)(tpcb->tp_lsuffix); 527 fsufx = *(u_short *)(tpcb->tp_fsuffix); 528 529 tpmeas(tpcb->tp_lref, TPtime_open, 530 &time, lsufx, fsufx, tpcb->tp_fref); 531 ENDPERF 532 break; 533 534 case PRU_RCVD: 535 if (so->so_state & SS_ISCONFIRMING) { 536 if (tpcb->tp_state == TP_CONFIRMING) 537 error = tp_confirm(tpcb); 538 break; 539 } 540 IFTRACE(D_DATA) 541 tptraceTPCB(TPPTmisc, 542 "RCVD BF: lcredit sent_lcdt cc hiwat \n", 543 tpcb->tp_lcredit, tpcb->tp_sent_lcdt, 544 so->so_rcv.sb_cc, so->so_rcv.sb_hiwat); 545 LOCAL_CREDIT(tpcb); 546 tptraceTPCB(TPPTmisc, 547 "PRU_RCVD AF sbspace lcredit hiwat cc", 548 sbspace(&so->so_rcv), tpcb->tp_lcredit, 549 so->so_rcv.sb_cc, so->so_rcv.sb_hiwat); 550 ENDTRACE 551 IFDEBUG(D_REQUEST) 552 printf("RCVD: cc %d space %d hiwat %d\n", 553 so->so_rcv.sb_cc, sbspace(&so->so_rcv), 554 so->so_rcv.sb_hiwat); 555 ENDDEBUG 556 if (((int)nam) & MSG_OOB) 557 error = DoEvent(T_USR_Xrcvd); 558 else 559 error = DoEvent(T_USR_rcvd); 560 break; 561 562 case PRU_RCVOOB: 563 if ((so->so_state & SS_ISCONNECTED) == 0) { 564 error = ENOTCONN; 565 break; 566 } 567 if (! tpcb->tp_xpd_service) { 568 error = EOPNOTSUPP; 569 break; 570 } 571 /* kludge - nam is really flags here */ 572 error = tp_rcvoob(tpcb, so, m, outflags, (int)nam); 573 break; 574 575 case PRU_SEND: 576 case PRU_SENDOOB: 577 if (controlp) { 578 error = tp_snd_control(controlp, so, &m); 579 controlp = NULL; 580 if (error) 581 break; 582 } 583 if ((so->so_state & SS_ISCONFIRMING) && 584 (tpcb->tp_state == TP_CONFIRMING) && 585 (error = tp_confirm(tpcb))) 586 break; 587 if (req == PRU_SENDOOB) { 588 error = (tpcb->tp_xpd_service == 0) ? 589 EOPNOTSUPP : tp_sendoob(tpcb, so, m, outflags); 590 break; 591 } 592 if (m == 0) 593 break; 594 if (m->m_flags & M_EOR) { 595 eotsdu = 1; 596 m->m_flags &= ~M_EOR; 597 } 598 if (eotsdu == 0 && m->m_pkthdr.len == 0) 599 break; 600 if (tpcb->tp_state != TP_AKWAIT && tpcb->tp_state != TP_OPEN) { 601 error = ENOTCONN; 602 break; 603 } 604 /* 605 * The protocol machine copies mbuf chains, 606 * prepends headers, assigns seq numbers, and 607 * puts the packets on the device. 608 * When they are acked they are removed from the socket buf. 609 * 610 * sosend calls this up until sbspace goes negative. 611 * Sbspace may be made negative by appending this mbuf chain, 612 * possibly by a whole cluster. 613 */ 614 { 615 register struct mbuf *n = m; 616 register struct sockbuf *sb = &so->so_snd; 617 int maxsize = tpcb->tp_l_tpdusize 618 - tp_headersize(DT_TPDU_type, tpcb) 619 - (tpcb->tp_use_checksum?4:0) ; 620 int totlen = n->m_pkthdr.len; 621 int mbufcnt = 0; 622 struct mbuf *nn; 623 624 /* 625 * Could have eotsdu and no data.(presently MUST have 626 * an mbuf though, even if its length == 0) 627 */ 628 IFPERF(tpcb) 629 PStat(tpcb, Nb_from_sess) += totlen; 630 tpmeas(tpcb->tp_lref, TPtime_from_session, 0, 0, 631 PStat(tpcb, Nb_from_sess), totlen); 632 ENDPERF 633 IFDEBUG(D_SYSCALL) 634 printf( 635 "PRU_SEND: eot %d before sbappend 0x%x len 0x%x to sb @ 0x%x\n", 636 eotsdu, m, totlen, sb); 637 dump_mbuf(sb->sb_mb, "so_snd.sb_mb"); 638 dump_mbuf(m, "m : to be added"); 639 ENDDEBUG 640 /* 641 * Pre-packetize the data in the sockbuf 642 * according to negotiated mtu. Do it here 643 * where we can safely wait for mbufs. 644 * 645 * This presumes knowledge of sockbuf conventions. 646 */ 647 if (n = sb->sb_mb) 648 while (n->m_act) 649 n = n->m_act; 650 if ((nn = n) && n->m_pkthdr.len < maxsize) { 651 u_int space = maxsize - n->m_pkthdr.len; 652 653 do { 654 if (n->m_flags & M_EOR) 655 goto on1; 656 } while (n->m_next && (n = n->m_next)); 657 if (totlen <= space) { 658 TPNagle1++; 659 n->m_next = m; 660 nn->m_pkthdr.len += totlen; 661 while (n = n->m_next) 662 sballoc(sb, n); 663 if (eotsdu) 664 nn->m_flags |= M_EOR; 665 goto on2; 666 } else { 667 /* 668 * Can't sleep here, because when you wake up 669 * packet you want to attach to may be gone! 670 */ 671 if (TNew && (n->m_next = m_copym(m, 0, space, M_NOWAIT))) { 672 nn->m_pkthdr.len += space; 673 TPNagle2++; 674 while (n = n->m_next) 675 sballoc(sb, n); 676 m_adj(m, space); 677 } 678 } 679 } 680 on1: mbufcnt++; 681 for (n = m; n->m_pkthdr.len > maxsize;) { 682 nn = m_copym(n, 0, maxsize, M_WAIT); 683 sbappendrecord(sb, nn); 684 m_adj(n, maxsize); 685 mbufcnt++; 686 } 687 if (eotsdu) 688 n->m_flags |= M_EOR; 689 sbappendrecord(sb, n); 690 on2: 691 IFTRACE(D_DATA) 692 tptraceTPCB(TPPTmisc, 693 "SEND BF: maxsize totlen mbufcnt eotsdu", 694 maxsize, totlen, mbufcnt, eotsdu); 695 ENDTRACE 696 IFDEBUG(D_SYSCALL) 697 printf("PRU_SEND: eot %d after sbappend 0x%x mbufcnt 0x%x\n", 698 eotsdu, n, mbufcnt); 699 dump_mbuf(sb->sb_mb, "so_snd.sb_mb"); 700 ENDDEBUG 701 if (tpcb->tp_state == TP_OPEN) 702 error = DoEvent(T_DATA_req); 703 IFDEBUG(D_SYSCALL) 704 printf("PRU_SEND: after driver error 0x%x \n",error); 705 printf("so_snd 0x%x cc 0t%d mbcnt 0t%d\n", 706 sb, sb->sb_cc, sb->sb_mbcnt); 707 dump_mbuf(sb->sb_mb, "so_snd.sb_mb after driver"); 708 ENDDEBUG 709 } 710 break; 711 712 case PRU_SOCKADDR: 713 (tpcb->tp_nlproto->nlp_getnetaddr)(tpcb->tp_npcb, nam, TP_LOCAL); 714 break; 715 716 case PRU_PEERADDR: 717 (tpcb->tp_nlproto->nlp_getnetaddr)(tpcb->tp_npcb, nam, TP_FOREIGN); 718 break; 719 720 case PRU_CONTROL: 721 error = EOPNOTSUPP; 722 break; 723 724 case PRU_PROTOSEND: 725 case PRU_PROTORCV: 726 case PRU_SENSE: 727 case PRU_SLOWTIMO: 728 case PRU_FASTTIMO: 729 error = EOPNOTSUPP; 730 break; 731 732 default: 733 #ifdef ARGO_DEBUG 734 printf("tp_usrreq UNKNOWN PRU %d\n", req); 735 #endif ARGO_DEBUG 736 error = EOPNOTSUPP; 737 } 738 739 IFDEBUG(D_REQUEST) 740 printf("%s, so 0x%x, tpcb 0x%x, error %d, state %d\n", 741 "returning from tp_usrreq", so, tpcb, error, 742 tpcb ? 0 : tpcb->tp_state); 743 ENDDEBUG 744 IFTRACE(D_REQUEST) 745 tptraceTPCB(TPPTusrreq, "END req so m state [", req, so, m, 746 tpcb?0:tpcb->tp_state); 747 ENDTRACE 748 if (controlp) { 749 m_freem(controlp); 750 printf("control data unexpectedly retained in tp_usrreq()"); 751 } 752 splx(s); 753 return error; 754 } 755 tp_ltrace(so, uio) 756 struct socket *so; 757 struct uio *uio; 758 { 759 IFTRACE(D_DATA) 760 register struct tp_pcb *tpcb = sototpcb(so); 761 if (tpcb) { 762 tptraceTPCB(TPPTmisc, "sosend so resid iovcnt", so, 763 uio->uio_resid, uio->uio_iovcnt, 0); 764 } 765 ENDTRACE 766 } 767 768 tp_confirm(tpcb) 769 register struct tp_pcb *tpcb; 770 { 771 struct tp_event E; 772 if (tpcb->tp_state == TP_CONFIRMING) 773 return DoEvent(T_ACPT_req); 774 printf("Tp confirm called when not confirming; tpcb 0x%x, state 0x%x\n", 775 tpcb, tpcb->tp_state); 776 return 0; 777 } 778 779 /* 780 * Process control data sent with sendmsg() 781 */ 782 tp_snd_control(m, so, data) 783 struct mbuf *m; 784 struct socket *so; 785 register struct mbuf **data; 786 { 787 register struct cmsghdr *ch; 788 int error = 0; 789 790 if (m && m->m_len) { 791 ch = mtod(m, struct cmsghdr *); 792 m->m_len -= sizeof (*ch); 793 m->m_data += sizeof (*ch); 794 error = tp_ctloutput(PRCO_SETOPT, 795 so, ch->cmsg_level, ch->cmsg_type, &m); 796 if (ch->cmsg_type == TPOPT_DISC_DATA) { 797 if (data && *data) { 798 m_freem(*data); 799 *data = 0; 800 } 801 error = tp_usrreq(so, PRU_DISCONNECT, (struct mbuf *)0, 802 (caddr_t)0, (struct mbuf *)0); 803 } 804 } 805 if (m) 806 m_freem(m); 807 return error; 808 } 809