2 * Copyright (c) 2000-2001 Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/param.h>
35 #include <sys/condvar.h>
36 #include <sys/kernel.h>
38 #include <sys/malloc.h>
42 #include <sys/protosw.h>
43 #include <sys/signalvar.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
47 #include <sys/sysctl.h>
48 #include <sys/systm.h>
52 #include <net/route.h>
54 #include <netinet/in.h>
55 #include <netinet/tcp.h>
57 #include <sys/mchain.h>
59 #include <netsmb/netbios.h>
61 #include <netsmb/smb.h>
62 #include <netsmb/smb_conn.h>
63 #include <netsmb/smb_tran.h>
64 #include <netsmb/smb_trantcp.h>
65 #include <netsmb/smb_subr.h>
67 #define M_NBDATA M_PCB
69 static int smb_tcpsndbuf = NB_SNDQ - 1;
70 static int smb_tcprcvbuf = NB_RCVQ - 1;
72 SYSCTL_DECL(_net_smb);
73 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
74 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
76 #define nb_sosend(so,m,flags,td) (so)->so_proto->pr_usrreqs->pru_sosend( \
77 so, NULL, 0, m, 0, flags, td)
79 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
80 u_int8_t *rpcodep, struct thread *td);
81 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
84 nb_setsockopt_int(struct socket *so, int level, int name, int val)
88 bzero(&sopt, sizeof(sopt));
89 sopt.sopt_level = level;
90 sopt.sopt_name = name;
92 sopt.sopt_valsize = sizeof(val);
93 return sosetopt(so, &sopt);
97 nb_poll(struct nbpcb *nbp, int events, struct thread *td)
99 return nbp->nbp_tso->so_proto->pr_usrreqs->pru_sopoll(nbp->nbp_tso,
104 nbssn_rselect(struct nbpcb *nbp, struct timeval *tv, int events,
107 struct timeval atv, rtv, ttv;
108 int ncoll, timo, error;
112 if (itimerfix(&atv)) {
114 goto done_noproclock;
116 getmicrouptime(&rtv);
117 timevaladd(&atv, &rtv);
124 mtx_lock_spin(&sched_lock);
125 td->td_flags |= TDF_SELECT;
126 mtx_unlock_spin(&sched_lock);
127 mtx_unlock(&sellock);
129 /* XXX: Should be done when the thread is initialized. */
130 TAILQ_INIT(&td->td_selq);
131 error = nb_poll(nbp, events, td);
138 getmicrouptime(&rtv);
139 if (timevalcmp(&rtv, &atv, >=))
142 timevalsub(&ttv, &rtv);
146 * An event of our interest may occur during locking a process.
147 * In order to avoid missing the event that occurred during locking
148 * the process, test P_SELECT and rescan file descriptors if
151 mtx_lock_spin(&sched_lock);
152 if ((td->td_flags & TDF_SELECT) == 0 || nselcoll != ncoll) {
153 mtx_unlock_spin(&sched_lock);
156 mtx_unlock_spin(&sched_lock);
159 error = cv_timedwait(&selwait, &sellock, timo);
161 cv_wait(&selwait, &sellock);
166 clear_selinfo_list(td);
168 mtx_lock_spin(&sched_lock);
169 td->td_flags &= ~TDF_SELECT;
170 mtx_unlock_spin(&sched_lock);
171 mtx_unlock(&sellock);
174 if (error == ERESTART)
180 nb_intr(struct nbpcb *nbp, struct proc *p)
186 nb_upcall(struct socket *so, void *arg, int waitflag)
188 struct nbpcb *nbp = arg;
190 if (arg == NULL || nbp->nbp_selectid == NULL)
192 wakeup(nbp->nbp_selectid);
196 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
198 u_int32_t *p = mtod(m, u_int32_t *);
200 *p = htonl((len & 0x1FFFF) | (type << 24));
205 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
213 NBDEBUG("[%s]\n", cp);
216 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
227 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
232 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
237 so->so_upcallarg = (caddr_t)nbp;
238 so->so_upcall = nb_upcall;
239 so->so_rcv.sb_flags |= SB_UPCALL;
240 so->so_rcv.sb_timeo = (5 * hz);
241 so->so_snd.sb_timeo = (5 * hz);
242 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
245 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
246 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
247 so->so_rcv.sb_flags &= ~SB_NOINTR;
248 so->so_snd.sb_flags &= ~SB_NOINTR;
249 error = soconnect(so, (struct sockaddr*)to, td);
253 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
254 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
255 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
256 (error = nb_intr(nbp, td->td_proc)) != 0) {
257 so->so_state &= ~SS_ISCONNECTING;
263 error = so->so_error;
271 smb_nbst_disconnect(nbp->nbp_vc, td);
276 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
278 struct mbchain mb, *mbp = &mb;
279 struct mdchain md, *mdp = &md;
282 struct sockaddr_in sin;
287 error = mb_init(mbp);
290 mb_put_uint32le(mbp, 0);
291 nb_put_name(mbp, nbp->nbp_paddr);
292 nb_put_name(mbp, nbp->nbp_laddr);
293 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
294 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
296 nbp->nbp_state = NBST_RQSENT;
302 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
303 error = nbssn_rselect(nbp, &tv, POLLIN, td);
304 if (error == EWOULDBLOCK) { /* Timeout */
305 NBDEBUG("initial request timeout\n");
308 if (error) /* restart or interrupt */
310 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
312 NBDEBUG("recv() error %d\n", error);
316 * Process NETBIOS reply
322 if (rpcode == NB_SSN_POSRESP) {
323 nbp->nbp_state = NBST_SESSION;
324 nbp->nbp_flags |= NBF_CONNECTED;
327 if (rpcode != NB_SSN_RTGRESP) {
328 error = ECONNABORTED;
332 error = ECONNABORTED;
335 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
336 md_get_uint16(mdp, &port);
338 nbp->nbp_state = NBST_RETARGET;
339 smb_nbst_disconnect(nbp->nbp_vc, td);
340 error = nb_connect_in(nbp, &sin, td);
342 error = nbssn_rq_request(nbp, td);
344 smb_nbst_disconnect(nbp->nbp_vc, td);
354 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
355 u_int8_t *rpcodep, int flags, struct thread *td)
357 struct socket *so = nbp->nbp_tso;
363 aio.iov_base = (caddr_t)&len;
364 aio.iov_len = sizeof(len);
367 auio.uio_segflg = UIO_SYSSPACE;
368 auio.uio_rw = UIO_READ;
370 auio.uio_resid = sizeof(len);
372 error = so->so_proto->pr_usrreqs->pru_soreceive
373 (so, (struct sockaddr **)NULL, &auio,
374 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
377 if (auio.uio_resid > 0) {
378 SMBSDEBUG("short reply\n");
382 *rpcodep = (len >> 24) & 0xFF;
384 if (len > SMB_MAXPKTLEN) {
385 SMBERROR("packet too long (%d)\n", len);
393 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
394 u_int8_t *rpcodep, struct thread *td)
396 struct socket *so = nbp->nbp_tso;
398 struct mbuf *m, *tm, *im;
411 * Poll for a response header.
412 * If we don't have one waiting, return.
414 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
416 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
417 nbp->nbp_state = NBST_CLOSED;
418 NBDEBUG("session closed by peer\n");
423 if (len == 0 && nbp->nbp_state != NBST_SESSION)
425 /* no data, try again */
426 if (rpcode == NB_SSN_KEEPALIVE)
430 * Loop, blocking, for data following the response header.
432 * Note that we can't simply block here with MSG_WAITALL for the
433 * entire response size, as it may be larger than the TCP
434 * slow-start window that the sender employs. This will result
435 * in the sender stalling until the delayed ACK is sent, then
436 * resuming slow-start, resulting in very poor performance.
438 * Instead, we never request more than NB_SORECEIVE_CHUNK
439 * bytes at a time, resulting in an ack being pushed by
440 * the TCP code at the completion of each call.
445 rcvflg = MSG_WAITALL;
446 bzero(&auio, sizeof(auio));
447 auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK);
449 resid -= auio.uio_resid;
451 * Spin until we have collected everything in
455 rcvflg = MSG_WAITALL;
456 error = so->so_proto->pr_usrreqs->pru_soreceive
457 (so, (struct sockaddr **)NULL,
458 &auio, &tm, (struct mbuf **)NULL, &rcvflg);
459 } while (error == EWOULDBLOCK || error == EINTR ||
463 /* short return guarantees unhappiness */
464 if (auio.uio_resid > 0) {
465 SMBERROR("packet is shorter than expected\n");
469 /* append received chunk to previous chunk(s) */
474 * Just glue the new chain on the end.
475 * Consumer will pullup as required.
477 for (im = m; im->m_next != NULL; im = im->m_next)
482 /* got a session/message packet? */
483 if (nbp->nbp_state == NBST_SESSION &&
484 rpcode == NB_SSN_MESSAGE)
486 /* drop packet and try for another */
487 NBDEBUG("non-session packet %x\n", rpcode);
510 * SMB transport interface
513 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
517 MALLOC(nbp, struct nbpcb *, sizeof *nbp, M_NBDATA, M_WAITOK);
518 bzero(nbp, sizeof *nbp);
519 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
520 nbp->nbp_state = NBST_CLOSED;
522 nbp->nbp_sndbuf = smb_tcpsndbuf;
523 nbp->nbp_rcvbuf = smb_tcprcvbuf;
529 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
531 struct nbpcb *nbp = vcp->vc_tdata;
535 smb_nbst_disconnect(vcp, td);
537 free(nbp->nbp_laddr, M_SONAME);
539 free(nbp->nbp_paddr, M_SONAME);
545 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
547 struct nbpcb *nbp = vcp->vc_tdata;
548 struct sockaddr_nb *snb;
554 if (nbp->nbp_flags & NBF_LOCADDR)
557 * It is possible to create NETBIOS name in the kernel,
558 * but nothing prevents us to do it in the user space.
563 if (slen < NB_MINSALEN)
565 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
570 nbp->nbp_laddr = snb;
571 nbp->nbp_flags |= NBF_LOCADDR;
578 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
580 struct nbpcb *nbp = vcp->vc_tdata;
581 struct sockaddr_in sin;
582 struct sockaddr_nb *snb;
583 struct timespec ts1, ts2;
587 if (nbp->nbp_tso != NULL)
589 if (nbp->nbp_laddr == NULL)
592 if (slen < NB_MINSALEN)
594 if (nbp->nbp_paddr) {
595 free(nbp->nbp_paddr, M_SONAME);
596 nbp->nbp_paddr = NULL;
598 snb = (struct sockaddr_nb*)dup_sockaddr(sap, 1);
601 nbp->nbp_paddr = snb;
602 sin = snb->snb_addrin;
604 error = nb_connect_in(nbp, &sin, td);
608 timespecsub(&ts2, &ts1);
609 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
612 timespecadd(&nbp->nbp_timo, &ts2);
613 timespecadd(&nbp->nbp_timo, &ts2);
614 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
615 error = nbssn_rq_request(nbp, td);
617 smb_nbst_disconnect(vcp, td);
622 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
624 struct nbpcb *nbp = vcp->vc_tdata;
627 if (nbp == NULL || nbp->nbp_tso == NULL)
629 if ((so = nbp->nbp_tso) != NULL) {
630 nbp->nbp_flags &= ~NBF_CONNECTED;
631 nbp->nbp_tso = (struct socket *)NULL;
635 if (nbp->nbp_state != NBST_RETARGET) {
636 nbp->nbp_state = NBST_CLOSED;
642 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
644 struct nbpcb *nbp = vcp->vc_tdata;
647 if (nbp->nbp_state != NBST_SESSION) {
651 M_PREPEND(m0, 4, M_TRYWAIT);
654 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
655 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
665 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
667 struct nbpcb *nbp = vcp->vc_tdata;
671 nbp->nbp_flags |= NBF_RECVLOCK;
672 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
673 nbp->nbp_flags &= ~NBF_RECVLOCK;
678 smb_nbst_timo(struct smb_vc *vcp)
684 smb_nbst_intr(struct smb_vc *vcp)
686 struct nbpcb *nbp = vcp->vc_tdata;
688 if (nbp == NULL || nbp->nbp_tso == NULL)
690 sorwakeup(nbp->nbp_tso);
691 sowwakeup(nbp->nbp_tso);
695 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
697 struct nbpcb *nbp = vcp->vc_tdata;
701 *(int*)data = nbp->nbp_sndbuf;
704 *(int*)data = nbp->nbp_rcvbuf;
707 *(struct timespec*)data = nbp->nbp_timo;
716 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
718 struct nbpcb *nbp = vcp->vc_tdata;
722 nbp->nbp_selectid = data;
731 * Check for fatal errors
734 smb_nbst_fatal(struct smb_vc *vcp, int error)
746 struct smb_tran_desc smb_tran_nbtcp_desc = {
748 smb_nbst_create, smb_nbst_done,
749 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
750 smb_nbst_send, smb_nbst_recv,
751 smb_nbst_timo, smb_nbst_intr,
752 smb_nbst_getparam, smb_nbst_setparam,