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
32 * $FreeBSD: src/sys/netsmb/smb_trantcp.c,v 1.3.2.1 2001/05/22 08:32:34 bp Exp $
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/malloc.h>
40 #include <sys/protosw.h>
41 #include <sys/resourcevar.h>
42 #include <sys/socket.h>
43 #include <sys/socketvar.h>
44 #include <sys/socketvar2.h>
45 #include <sys/socketops.h>
48 #include <sys/fcntl.h>
49 #include <sys/sysctl.h>
50 #include <sys/thread2.h>
53 #include <net/route.h>
55 #include <netinet/in.h>
56 #include <netinet/tcp.h>
58 #include <sys/mchain.h>
65 #include "smb_trantcp.h"
68 #define M_NBDATA M_PCB
70 static int smb_tcpsndbuf = 10 * 1024;
71 static int smb_tcprcvbuf = 10 * 1024;
73 SYSCTL_DECL(_net_smb);
74 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
75 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
77 #define nb_sosend(so,m,flags,p) \
78 so_pru_sosend(so, NULL, NULL, m, NULL, flags, td)
80 static int nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
81 u_int8_t *rpcodep, struct thread *td);
82 static int smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
85 nb_setsockopt_int(struct socket *so, int level, int name, int val)
89 bzero(&sopt, sizeof(sopt));
90 sopt.sopt_level = level;
91 sopt.sopt_name = name;
93 sopt.sopt_valsize = sizeof(val);
94 return sosetopt(so, &sopt);
98 nb_intr(struct nbpcb *nbp, struct thread *td)
104 nb_upcall(struct socket *so, void *arg, int waitflag)
106 struct nbpcb *nbp = arg;
108 if (arg == NULL || nbp->nbp_selectid == NULL)
110 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, td);
154 so->so_upcallarg = (caddr_t)nbp;
155 so->so_upcall = nb_upcall;
156 atomic_set_int(&so->so_rcv.ssb_flags, SSB_UPCALL);
157 so->so_rcv.ssb_timeo = (5 * hz);
158 so->so_snd.ssb_timeo = (5 * hz);
159 error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf,
160 &td->td_proc->p_rlimit[RLIMIT_SBSIZE]);
163 nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
164 nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
165 atomic_clear_int(&so->so_rcv.ssb_flags, SSB_NOINTR);
166 atomic_clear_int(&so->so_snd.ssb_flags, SSB_NOINTR);
167 error = soconnect(so, (struct sockaddr*)to, td);
170 * If signals are allowed nbssn_recv() can wind up in a hard loop
173 atomic_set_int(&so->so_rcv.ssb_flags, SSB_NOINTR);
174 atomic_set_int(&so->so_snd.ssb_flags, SSB_NOINTR);
178 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
179 tsleep(&so->so_timeo, 0, "nbcon", 2 * hz);
180 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
181 (error = nb_intr(nbp, td)) != 0) {
182 soclrstate(so, SS_ISCONNECTING);
188 error = so->so_error;
196 smb_nbst_disconnect(nbp->nbp_vc, td);
201 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
203 struct mbchain mb, *mbp = &mb;
204 struct mdchain md, *mdp = &md;
206 struct sockaddr_in sin;
209 int error, rplen, res;
211 error = mb_init(mbp);
214 mb_put_uint32le(mbp, 0);
215 nb_put_name(mbp, nbp->nbp_paddr);
216 nb_put_name(mbp, nbp->nbp_laddr);
217 nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
218 error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
220 nbp->nbp_state = NBST_RQSENT;
226 error = socket_wait(nbp->nbp_tso, &nbp->nbp_timo, &res);
227 if (error == EWOULDBLOCK) { /* Timeout */
228 NBDEBUG("initial request timeout\n");
231 if (error) /* restart or interrupt */
233 error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
235 NBDEBUG("recv() error %d\n", error);
239 * Process NETBIOS reply
245 if (rpcode == NB_SSN_POSRESP) {
246 nbp->nbp_state = NBST_SESSION;
247 nbp->nbp_flags |= NBF_CONNECTED;
250 if (rpcode != NB_SSN_RTGRESP) {
251 error = ECONNABORTED;
255 error = ECONNABORTED;
258 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
259 md_get_uint16(mdp, &port);
261 nbp->nbp_state = NBST_RETARGET;
262 smb_nbst_disconnect(nbp->nbp_vc, td);
263 error = nb_connect_in(nbp, &sin, td);
265 error = nbssn_rq_request(nbp, td);
267 smb_nbst_disconnect(nbp->nbp_vc, td);
277 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
278 u_int8_t *rpcodep, int flags, struct thread *td)
280 struct socket *so = nbp->nbp_tso;
286 aio.iov_base = (caddr_t)&len;
287 aio.iov_len = sizeof(len);
290 auio.uio_segflg = UIO_SYSSPACE;
291 auio.uio_rw = UIO_READ;
293 auio.uio_resid = sizeof(len);
295 error = so_pru_soreceive(so, NULL, &auio, NULL, NULL, &flags);
298 if (auio.uio_resid > 0) {
299 SMBSDEBUG("short reply\n");
303 *rpcodep = (len >> 24) & 0xFF;
305 if (len > SMB_MAXPKTLEN) {
306 SMBERROR("packet too long (%d)\n", len);
314 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
315 u_int8_t *rpcodep, struct thread *td)
317 struct socket *so = nbp->nbp_tso;
331 error = nbssn_recvhdr(nbp, &savelen, &rpcode, MSG_DONTWAIT, td);
333 (SS_ISDISCONNECTING | SS_ISDISCONNECTED | SS_CANTRCVMORE)) {
334 nbp->nbp_state = NBST_CLOSED;
335 NBDEBUG("session closed by peer\n");
341 if (savelen == 0 && nbp->nbp_state != NBST_SESSION)
343 if (rpcode == NB_SSN_KEEPALIVE)
346 sbinit(&sio, savelen);
347 rcvflg = MSG_WAITALL;
348 error = so_pru_soreceive(so, NULL, NULL, &sio,
350 } while (error == EWOULDBLOCK || error == EINTR ||
354 if (sio.sb_cc != savelen) {
355 SMBERROR("packet is shorter than expected\n");
360 if (nbp->nbp_state == NBST_SESSION && rpcode == NB_SSN_MESSAGE)
362 NBDEBUG("non-session packet %x\n", rpcode);
379 * SMB transport interface
382 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
386 nbp = kmalloc(sizeof *nbp, M_NBDATA, M_WAITOK | M_ZERO);
387 nbp->nbp_timo.tv_sec = 15; /* XXX: sysctl ? */
388 nbp->nbp_state = NBST_CLOSED;
390 nbp->nbp_sndbuf = smb_tcpsndbuf;
391 nbp->nbp_rcvbuf = smb_tcprcvbuf;
397 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
399 struct nbpcb *nbp = vcp->vc_tdata;
403 smb_nbst_disconnect(vcp, td);
405 kfree(nbp->nbp_laddr, M_SONAME);
407 kfree(nbp->nbp_paddr, M_SONAME);
408 kfree(nbp, M_NBDATA);
413 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
415 struct nbpcb *nbp = vcp->vc_tdata;
416 struct sockaddr_nb *snb;
422 if (nbp->nbp_flags & NBF_LOCADDR)
425 * It is possible to create NETBIOS name in the kernel,
426 * but nothing prevents us to do it in the user space.
431 if (slen < NB_MINSALEN)
433 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
438 nbp->nbp_laddr = snb;
439 nbp->nbp_flags |= NBF_LOCADDR;
446 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
448 struct nbpcb *nbp = vcp->vc_tdata;
449 struct sockaddr_in sin;
450 struct sockaddr_nb *snb;
451 struct timespec ts1, ts2;
455 if (nbp->nbp_tso != NULL)
457 if (nbp->nbp_laddr == NULL)
460 if (slen < NB_MINSALEN)
462 if (nbp->nbp_paddr) {
463 kfree(nbp->nbp_paddr, M_SONAME);
464 nbp->nbp_paddr = NULL;
466 snb = (struct sockaddr_nb*)dup_sockaddr(sap);
469 nbp->nbp_paddr = snb;
470 sin = snb->snb_addrin;
472 error = nb_connect_in(nbp, &sin, td);
476 timespecsub(&ts2, &ts1);
477 if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
480 timespecadd(&nbp->nbp_timo, &ts2);
481 timespecadd(&nbp->nbp_timo, &ts2);
482 timespecadd(&nbp->nbp_timo, &ts2); /* * 4 */
483 error = nbssn_rq_request(nbp, td);
485 smb_nbst_disconnect(vcp, td);
490 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
492 struct nbpcb *nbp = vcp->vc_tdata;
495 if (nbp == NULL || nbp->nbp_tso == NULL)
497 if ((so = nbp->nbp_tso) != NULL) {
498 nbp->nbp_flags &= ~NBF_CONNECTED;
500 soshutdown(so, SHUT_RDWR);
501 soclose(so, FNONBLOCK);
503 if (nbp->nbp_state != NBST_RETARGET) {
504 nbp->nbp_state = NBST_CLOSED;
510 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
512 struct nbpcb *nbp = vcp->vc_tdata;
515 if (nbp->nbp_state != NBST_SESSION) {
519 M_PREPEND(m0, 4, MB_TRYWAIT);
522 nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
523 error = nb_sosend(nbp->nbp_tso, m0, 0, td);
533 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
535 struct nbpcb *nbp = vcp->vc_tdata;
539 nbp->nbp_flags |= NBF_RECVLOCK;
540 error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
541 nbp->nbp_flags &= ~NBF_RECVLOCK;
546 smb_nbst_timo(struct smb_vc *vcp)
552 smb_nbst_intr(struct smb_vc *vcp)
554 struct nbpcb *nbp = vcp->vc_tdata;
556 if (nbp == NULL || nbp->nbp_tso == NULL)
558 sorwakeup(nbp->nbp_tso);
559 sowwakeup(nbp->nbp_tso);
563 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
565 struct nbpcb *nbp = vcp->vc_tdata;
569 *(int*)data = nbp->nbp_sndbuf;
572 *(int*)data = nbp->nbp_rcvbuf;
575 *(struct timespec*)data = nbp->nbp_timo;
584 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
586 struct nbpcb *nbp = vcp->vc_tdata;
590 nbp->nbp_selectid = data;
599 * Check for fatal errors
602 smb_nbst_fatal(struct smb_vc *vcp, int error)
614 struct smb_tran_desc smb_tran_nbtcp_desc = {
616 smb_nbst_create, smb_nbst_done,
617 smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
618 smb_nbst_send, smb_nbst_recv,
619 smb_nbst_timo, smb_nbst_intr,
620 smb_nbst_getparam, smb_nbst_setparam,