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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
31 #include <sys/condvar.h>
32 #include <sys/kernel.h>
34 #include <sys/malloc.h>
38 #include <sys/protosw.h>
39 #include <sys/signalvar.h>
40 #include <sys/socket.h>
41 #include <sys/socketvar.h>
43 #include <sys/sysctl.h>
44 #include <sys/systm.h>
48 #include <net/route.h>
51 #include <netinet/in.h>
52 #include <netinet/tcp.h>
54 #include <sys/mchain.h>
56 #include <netsmb/netbios.h>
58 #include <netsmb/smb.h>
59 #include <netsmb/smb_conn.h>
60 #include <netsmb/smb_tran.h>
61 #include <netsmb/smb_trantcp.h>
62 #include <netsmb/smb_subr.h>
64 #define M_NBDATA M_PCB
66 static int smb_tcpsndbuf = NB_SNDQ - 1;
67 static int smb_tcprcvbuf = NB_RCVQ - 1;
69 SYSCTL_DECL(_net_smb);
70 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
71 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
73 #define nb_sosend(so,m,flags,td) sosend(so, NULL, 0, m, 0, flags, td)
75 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
76 u_int8_t *rpcodep, struct thread *td);
77 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
80 nb_setsockopt_int(struct socket *so, int level, int name, int val)
85 bzero(&sopt, sizeof(sopt));
86 sopt.sopt_level = level;
87 sopt.sopt_name = name;
89 sopt.sopt_valsize = sizeof(val);
90 CURVNET_SET(so->so_vnet);
91 error = sosetopt(so, &sopt);
97 nb_intr(struct nbpcb *nbp, struct proc *p)
103 nb_upcall(struct socket *so, void *arg, int waitflag)
105 struct nbpcb *nbp = arg;
107 if (arg == NULL || nbp->nbp_selectid == NULL)
109 wakeup(nbp->nbp_selectid);
114 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
116 u_int32_t *p = mtod(m, u_int32_t *);
118 *p = htonl((len & 0x1FFFF) | (type << 24));
123 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
131 NBDEBUG("[%s]\n", cp);
134 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
145 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
150 error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
155 SOCKBUF_LOCK(&so->so_rcv);
156 soupcall_set(so, SO_RCV, nb_upcall, nbp);
157 SOCKBUF_UNLOCK(&so->so_rcv);
158 so->so_rcv.sb_timeo = (5 * SBT_1S);
159 so->so_snd.sb_timeo = (5 * SBT_1S);
160 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
163 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
164 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
165 SOCKBUF_LOCK(&so->so_rcv);
166 so->so_rcv.sb_flags &= ~SB_NOINTR;
167 SOCKBUF_UNLOCK(&so->so_rcv);
168 SOCKBUF_LOCK(&so->so_snd);
169 so->so_snd.sb_flags &= ~SB_NOINTR;
170 SOCKBUF_UNLOCK(&so->so_snd);
171 error = soconnect(so, (struct sockaddr*)to, td);
175 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
176 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
177 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
178 (error = nb_intr(nbp, td->td_proc)) != 0) {
179 so->so_state &= ~SS_ISCONNECTING;
185 error = so->so_error;
193 smb_nbst_disconnect(nbp->nbp_vc, td);
198 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
204 struct sockaddr_in sin;
209 mbp = malloc(sizeof(struct mbchain), M_NBDATA, M_WAITOK);
210 mdp = malloc(sizeof(struct mbchain), M_NBDATA, M_WAITOK);
211 error = mb_init(mbp);
217 mb_put_uint32le(mbp, 0);
218 nb_put_name(mbp, nbp->nbp_paddr);
219 nb_put_name(mbp, nbp->nbp_laddr);
220 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
221 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
223 nbp->nbp_state = NBST_RQSENT;
232 TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
233 error = selsocket(nbp->nbp_tso, POLLIN, &tv, td);
234 if (error == EWOULDBLOCK) { /* Timeout */
235 NBDEBUG("initial request timeout\n");
239 if (error) { /* restart or interrupt */
243 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
245 NBDEBUG("recv() error %d\n", error);
250 * Process NETBIOS reply
256 if (rpcode == NB_SSN_POSRESP) {
257 nbp->nbp_state = NBST_SESSION;
258 nbp->nbp_flags |= NBF_CONNECTED;
261 if (rpcode != NB_SSN_RTGRESP) {
262 error = ECONNABORTED;
266 error = ECONNABORTED;
269 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
270 md_get_uint16(mdp, &port);
272 nbp->nbp_state = NBST_RETARGET;
273 smb_nbst_disconnect(nbp->nbp_vc, td);
274 error = nb_connect_in(nbp, &sin, td);
276 error = nbssn_rq_request(nbp, td);
278 smb_nbst_disconnect(nbp->nbp_vc, td);
289 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
290 u_int8_t *rpcodep, int flags, struct thread *td)
292 struct socket *so = nbp->nbp_tso;
298 aio.iov_base = (caddr_t)&len;
299 aio.iov_len = sizeof(len);
302 auio.uio_segflg = UIO_SYSSPACE;
303 auio.uio_rw = UIO_READ;
305 auio.uio_resid = sizeof(len);
307 CURVNET_SET(so->so_vnet);
308 error = soreceive(so, (struct sockaddr **)NULL, &auio,
309 (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
313 if (auio.uio_resid > 0) {
314 SMBSDEBUG("short reply\n");
318 *rpcodep = (len >> 24) & 0xFF;
320 if (len > SMB_MAXPKTLEN) {
321 SMBERROR("packet too long (%d)\n", len);
329 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
330 u_int8_t *rpcodep, struct thread *td)
332 struct socket *so = nbp->nbp_tso;
334 struct mbuf *m, *tm, *im;
347 * Poll for a response header.
348 * If we don't have one waiting, return.
352 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
353 if ((so->so_state & (SS_ISDISCONNECTING | SS_ISDISCONNECTED)) ||
354 (so->so_rcv.sb_state & SBS_CANTRCVMORE)) {
355 nbp->nbp_state = NBST_CLOSED;
356 NBDEBUG("session closed by peer\n");
361 if (len == 0 && nbp->nbp_state != NBST_SESSION)
363 /* no data, try again */
364 if (rpcode == NB_SSN_KEEPALIVE)
368 * Loop, blocking, for data following the response header.
370 * Note that we can't simply block here with MSG_WAITALL for the
371 * entire response size, as it may be larger than the TCP
372 * slow-start window that the sender employs. This will result
373 * in the sender stalling until the delayed ACK is sent, then
374 * resuming slow-start, resulting in very poor performance.
376 * Instead, we never request more than NB_SORECEIVE_CHUNK
377 * bytes at a time, resulting in an ack being pushed by
378 * the TCP code at the completion of each call.
383 rcvflg = MSG_WAITALL;
384 bzero(&auio, sizeof(auio));
385 auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK);
387 resid -= auio.uio_resid;
389 * Spin until we have collected everything in
393 rcvflg = MSG_WAITALL;
394 CURVNET_SET(so->so_vnet);
395 error = soreceive(so, (struct sockaddr **)NULL,
396 &auio, &tm, (struct mbuf **)NULL, &rcvflg);
398 } while (error == EWOULDBLOCK || error == EINTR ||
402 /* short return guarantees unhappiness */
403 if (auio.uio_resid > 0) {
404 SMBERROR("packet is shorter than expected\n");
408 /* append received chunk to previous chunk(s) */
413 * Just glue the new chain on the end.
414 * Consumer will pullup as required.
416 for (im = m; im->m_next != NULL; im = im->m_next)
421 /* got a session/message packet? */
422 if (nbp->nbp_state == NBST_SESSION &&
423 rpcode == NB_SSN_MESSAGE)
425 /* drop packet and try for another */
426 NBDEBUG("non-session packet %x\n", rpcode);
449 * SMB transport interface
452 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
456 nbp = malloc(sizeof *nbp, M_NBDATA, M_WAITOK);
457 bzero(nbp, sizeof *nbp);
458 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
459 nbp->nbp_state = NBST_CLOSED;
461 nbp->nbp_sndbuf = smb_tcpsndbuf;
462 nbp->nbp_rcvbuf = smb_tcprcvbuf;
468 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
470 struct nbpcb *nbp = vcp->vc_tdata;
474 smb_nbst_disconnect(vcp, td);
476 free(nbp->nbp_laddr, M_SONAME);
478 free(nbp->nbp_paddr, M_SONAME);
484 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
486 struct nbpcb *nbp = vcp->vc_tdata;
487 struct sockaddr_nb *snb;
493 if (nbp->nbp_flags & NBF_LOCADDR)
496 * It is possible to create NETBIOS name in the kernel,
497 * but nothing prevents us to do it in the user space.
502 if (slen < NB_MINSALEN)
504 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
509 nbp->nbp_laddr = snb;
510 nbp->nbp_flags |= NBF_LOCADDR;
517 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
519 struct nbpcb *nbp = vcp->vc_tdata;
520 struct sockaddr_in sin;
521 struct sockaddr_nb *snb;
522 struct timespec ts1, ts2;
526 if (nbp->nbp_tso != NULL)
528 if (nbp->nbp_laddr == NULL)
531 if (slen < NB_MINSALEN)
533 if (nbp->nbp_paddr) {
534 free(nbp->nbp_paddr, M_SONAME);
535 nbp->nbp_paddr = NULL;
537 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
540 nbp->nbp_paddr = snb;
541 sin = snb->snb_addrin;
543 error = nb_connect_in(nbp, &sin, td);
547 timespecsub(&ts2, &ts1);
548 if (ts2.tv_sec == 0) {
553 timespecadd(&nbp->nbp_timo, &ts2);
554 timespecadd(&nbp->nbp_timo, &ts2);
555 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
556 error = nbssn_rq_request(nbp, td);
558 smb_nbst_disconnect(vcp, td);
563 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
565 struct nbpcb *nbp = vcp->vc_tdata;
568 if (nbp == NULL || nbp->nbp_tso == NULL)
570 if ((so = nbp->nbp_tso) != NULL) {
571 nbp->nbp_flags &= ~NBF_CONNECTED;
572 nbp->nbp_tso = (struct socket *)NULL;
576 if (nbp->nbp_state != NBST_RETARGET) {
577 nbp->nbp_state = NBST_CLOSED;
583 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
585 struct nbpcb *nbp = vcp->vc_tdata;
588 if (nbp->nbp_state != NBST_SESSION) {
592 M_PREPEND(m0, 4, M_WAITOK);
593 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
594 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
604 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
606 struct nbpcb *nbp = vcp->vc_tdata;
610 nbp->nbp_flags |= NBF_RECVLOCK;
611 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
612 nbp->nbp_flags &= ~NBF_RECVLOCK;
617 smb_nbst_timo(struct smb_vc *vcp)
623 smb_nbst_intr(struct smb_vc *vcp)
625 struct nbpcb *nbp = vcp->vc_tdata;
627 if (nbp == NULL || nbp->nbp_tso == NULL)
629 sorwakeup(nbp->nbp_tso);
630 sowwakeup(nbp->nbp_tso);
634 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
636 struct nbpcb *nbp = vcp->vc_tdata;
640 *(int*)data = nbp->nbp_sndbuf;
643 *(int*)data = nbp->nbp_rcvbuf;
646 *(struct timespec*)data = nbp->nbp_timo;
655 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
657 struct nbpcb *nbp = vcp->vc_tdata;
661 nbp->nbp_selectid = data;
670 * Check for fatal errors
673 smb_nbst_fatal(struct smb_vc *vcp, int error)
685 struct smb_tran_desc smb_tran_nbtcp_desc = {
687 smb_nbst_create, smb_nbst_done,
688 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
689 smb_nbst_send, smb_nbst_recv,
690 smb_nbst_timo, smb_nbst_intr,
691 smb_nbst_getparam, smb_nbst_setparam,