smb_trantcp.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*-
    2  * Copyright (c) 2000-2001 Boris Popov
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    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.
   19  *
   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
   30  * SUCH DAMAGE.
   31  */
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD$");
   35 
   36 #include <sys/param.h>
   37 #include <sys/condvar.h>
   38 #include <sys/kernel.h>
   39 #include <sys/lock.h>
   40 #include <sys/malloc.h>
   41 #include <sys/mbuf.h>
   42 #include <sys/poll.h>
   43 #include <sys/proc.h>
   44 #include <sys/protosw.h>
   45 #include <sys/signalvar.h>
   46 #include <sys/socket.h>
   47 #include <sys/socketvar.h>
   48 #include <sys/sx.h>
   49 #include <sys/sysctl.h>
   50 #include <sys/systm.h>
   51 #include <sys/uio.h>
   52 
   53 #include <net/if.h>
   54 #include <net/route.h>
   55 #include <net/vnet.h>
   56 
   57 #include <netinet/in.h>
   58 #include <netinet/tcp.h>
   59 
   60 #include <sys/mchain.h>
   61 
   62 #include <netsmb/netbios.h>
   63 
   64 #include <netsmb/smb.h>
   65 #include <netsmb/smb_conn.h>
   66 #include <netsmb/smb_tran.h>
   67 #include <netsmb/smb_trantcp.h>
   68 #include <netsmb/smb_subr.h>
   69 
   70 #define M_NBDATA        M_PCB
   71 
   72 static int smb_tcpsndbuf = NB_SNDQ - 1;
   73 static int smb_tcprcvbuf = NB_RCVQ - 1;
   74 
   75 SYSCTL_DECL(_net_smb);
   76 SYSCTL_INT(_net_smb, OID_AUTO, tcpsndbuf, CTLFLAG_RW, &smb_tcpsndbuf, 0, "");
   77 SYSCTL_INT(_net_smb, OID_AUTO, tcprcvbuf, CTLFLAG_RW, &smb_tcprcvbuf, 0, "");
   78 
   79 #define nb_sosend(so,m,flags,td) sosend(so, NULL, 0, m, 0, flags, td)
   80 
   81 static int  nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
   82         u_int8_t *rpcodep, struct thread *td);
   83 static int  smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td);
   84 
   85 static int
   86 nb_setsockopt_int(struct socket *so, int level, int name, int val)
   87 {
   88         struct sockopt sopt;
   89         int error;
   90 
   91         bzero(&sopt, sizeof(sopt));
   92         sopt.sopt_level = level;
   93         sopt.sopt_name = name;
   94         sopt.sopt_val = &val;
   95         sopt.sopt_valsize = sizeof(val);
   96         CURVNET_SET(so->so_vnet);
   97         error = sosetopt(so, &sopt);
   98         CURVNET_RESTORE();
   99         return error;
  100 }
  101 
  102 static int
  103 nb_intr(struct nbpcb *nbp, struct proc *p)
  104 {
  105         return 0;
  106 }
  107 
  108 static int
  109 nb_upcall(struct socket *so, void *arg, int waitflag)
  110 {
  111         struct nbpcb *nbp = arg;
  112 
  113         if (arg == NULL || nbp->nbp_selectid == NULL)
  114                 return (SU_OK);
  115         wakeup(nbp->nbp_selectid);
  116         return (SU_OK);
  117 }
  118 
  119 static int
  120 nb_sethdr(struct mbuf *m, u_int8_t type, u_int32_t len)
  121 {
  122         u_int32_t *p = mtod(m, u_int32_t *);
  123 
  124         *p = htonl((len & 0x1FFFF) | (type << 24));
  125         return 0;
  126 }
  127 
  128 static int
  129 nb_put_name(struct mbchain *mbp, struct sockaddr_nb *snb)
  130 {
  131         int error;
  132         u_char seglen, *cp;
  133 
  134         cp = snb->snb_name;
  135         if (*cp == 0)
  136                 return EINVAL;
  137         NBDEBUG("[%s]\n", cp);
  138         for (;;) {
  139                 seglen = (*cp) + 1;
  140                 error = mb_put_mem(mbp, cp, seglen, MB_MSYSTEM);
  141                 if (error)
  142                         return error;
  143                 if (seglen == 1)
  144                         break;
  145                 cp += seglen;
  146         }
  147         return 0;
  148 }
  149 
  150 static int
  151 nb_connect_in(struct nbpcb *nbp, struct sockaddr_in *to, struct thread *td)
  152 {
  153         struct socket *so;
  154         int error, s;
  155 
  156         error = socreate(AF_INET, &so, SOCK_STREAM, IPPROTO_TCP,
  157             td->td_ucred, td);
  158         if (error)
  159                 return error;
  160         nbp->nbp_tso = so;
  161         SOCKBUF_LOCK(&so->so_rcv);
  162         soupcall_set(so, SO_RCV, nb_upcall, nbp);
  163         SOCKBUF_UNLOCK(&so->so_rcv);
  164         so->so_rcv.sb_timeo = (5 * hz);
  165         so->so_snd.sb_timeo = (5 * hz);
  166         error = soreserve(so, nbp->nbp_sndbuf, nbp->nbp_rcvbuf);
  167         if (error)
  168                 goto bad;
  169         nb_setsockopt_int(so, SOL_SOCKET, SO_KEEPALIVE, 1);
  170         nb_setsockopt_int(so, IPPROTO_TCP, TCP_NODELAY, 1);
  171         SOCKBUF_LOCK(&so->so_rcv);
  172         so->so_rcv.sb_flags &= ~SB_NOINTR;
  173         SOCKBUF_UNLOCK(&so->so_rcv);
  174         SOCKBUF_LOCK(&so->so_snd);
  175         so->so_snd.sb_flags &= ~SB_NOINTR;
  176         SOCKBUF_UNLOCK(&so->so_snd);
  177         error = soconnect(so, (struct sockaddr*)to, td);
  178         if (error)
  179                 goto bad;
  180         s = splnet();
  181         while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
  182                 tsleep(&so->so_timeo, PSOCK, "nbcon", 2 * hz);
  183                 if ((so->so_state & SS_ISCONNECTING) && so->so_error == 0 &&
  184                         (error = nb_intr(nbp, td->td_proc)) != 0) {
  185                         so->so_state &= ~SS_ISCONNECTING;
  186                         splx(s);
  187                         goto bad;
  188                 }
  189         }
  190         if (so->so_error) {
  191                 error = so->so_error;
  192                 so->so_error = 0;
  193                 splx(s);
  194                 goto bad;
  195         }
  196         splx(s);
  197         return 0;
  198 bad:
  199         smb_nbst_disconnect(nbp->nbp_vc, td);
  200         return error;
  201 }
  202 
  203 static int
  204 nbssn_rq_request(struct nbpcb *nbp, struct thread *td)
  205 {
  206         struct mbchain mb, *mbp = &mb;
  207         struct mdchain md, *mdp = &md;
  208         struct mbuf *m0;
  209         struct timeval tv;
  210         struct sockaddr_in sin;
  211         u_short port;
  212         u_int8_t rpcode;
  213         int error, rplen;
  214 
  215         error = mb_init(mbp);
  216         if (error)
  217                 return error;
  218         mb_put_uint32le(mbp, 0);
  219         nb_put_name(mbp, nbp->nbp_paddr);
  220         nb_put_name(mbp, nbp->nbp_laddr);
  221         nb_sethdr(mbp->mb_top, NB_SSN_REQUEST, mb_fixhdr(mbp) - 4);
  222         error = nb_sosend(nbp->nbp_tso, mbp->mb_top, 0, td);
  223         if (!error) {
  224                 nbp->nbp_state = NBST_RQSENT;
  225         }
  226         mb_detach(mbp);
  227         mb_done(mbp);
  228         if (error)
  229                 return error;
  230         TIMESPEC_TO_TIMEVAL(&tv, &nbp->nbp_timo);
  231         error = selsocket(nbp->nbp_tso, POLLIN, &tv, td);
  232         if (error == EWOULDBLOCK) {     /* Timeout */
  233                 NBDEBUG("initial request timeout\n");
  234                 return ETIMEDOUT;
  235         }
  236         if (error)                      /* restart or interrupt */
  237                 return error;
  238         error = nbssn_recv(nbp, &m0, &rplen, &rpcode, td);
  239         if (error) {
  240                 NBDEBUG("recv() error %d\n", error);
  241                 return error;
  242         }
  243         /*
  244          * Process NETBIOS reply
  245          */
  246         if (m0)
  247                 md_initm(mdp, m0);
  248         error = 0;
  249         do {
  250                 if (rpcode == NB_SSN_POSRESP) {
  251                         nbp->nbp_state = NBST_SESSION;
  252                         nbp->nbp_flags |= NBF_CONNECTED;
  253                         break;
  254                 }
  255                 if (rpcode != NB_SSN_RTGRESP) {
  256                         error = ECONNABORTED;
  257                         break;
  258                 }
  259                 if (rplen != 6) {
  260                         error = ECONNABORTED;
  261                         break;
  262                 }
  263                 md_get_mem(mdp, (caddr_t)&sin.sin_addr, 4, MB_MSYSTEM);
  264                 md_get_uint16(mdp, &port);
  265                 sin.sin_port = port;
  266                 nbp->nbp_state = NBST_RETARGET;
  267                 smb_nbst_disconnect(nbp->nbp_vc, td);
  268                 error = nb_connect_in(nbp, &sin, td);
  269                 if (!error)
  270                         error = nbssn_rq_request(nbp, td);
  271                 if (error) {
  272                         smb_nbst_disconnect(nbp->nbp_vc, td);
  273                         break;
  274                 }
  275         } while(0);
  276         if (m0)
  277                 md_done(mdp);
  278         return error;
  279 }
  280 
  281 static int
  282 nbssn_recvhdr(struct nbpcb *nbp, int *lenp,
  283         u_int8_t *rpcodep, int flags, struct thread *td)
  284 {
  285         struct socket *so = nbp->nbp_tso;
  286         struct uio auio;
  287         struct iovec aio;
  288         u_int32_t len;
  289         int error;
  290 
  291         aio.iov_base = (caddr_t)&len;
  292         aio.iov_len = sizeof(len);
  293         auio.uio_iov = &aio;
  294         auio.uio_iovcnt = 1;
  295         auio.uio_segflg = UIO_SYSSPACE;
  296         auio.uio_rw = UIO_READ;
  297         auio.uio_offset = 0;
  298         auio.uio_resid = sizeof(len);
  299         auio.uio_td = td;
  300         CURVNET_SET(so->so_vnet);
  301         error = soreceive(so, (struct sockaddr **)NULL, &auio,
  302             (struct mbuf **)NULL, (struct mbuf **)NULL, &flags);
  303         CURVNET_RESTORE();
  304         if (error)
  305                 return error;
  306         if (auio.uio_resid > 0) {
  307                 SMBSDEBUG("short reply\n");
  308                 return EPIPE;
  309         }
  310         len = ntohl(len);
  311         *rpcodep = (len >> 24) & 0xFF;
  312         len &= 0x1ffff;
  313         if (len > SMB_MAXPKTLEN) {
  314                 SMBERROR("packet too long (%d)\n", len);
  315                 return EFBIG;
  316         }
  317         *lenp = len;
  318         return 0;
  319 }
  320 
  321 static int
  322 nbssn_recv(struct nbpcb *nbp, struct mbuf **mpp, int *lenp,
  323         u_int8_t *rpcodep, struct thread *td)
  324 {
  325         struct socket *so = nbp->nbp_tso;
  326         struct uio auio;
  327         struct mbuf *m, *tm, *im;
  328         u_int8_t rpcode;
  329         int len, resid;
  330         int error, rcvflg;
  331 
  332         if (so == NULL)
  333                 return ENOTCONN;
  334 
  335         if (mpp)
  336                 *mpp = NULL;
  337         m = NULL;
  338         for(;;) {
  339                 /*
  340                  * Poll for a response header.
  341                  * If we don't have one waiting, return.
  342                  */
  343                 len = 0;
  344                 rpcode = 0;
  345                 error = nbssn_recvhdr(nbp, &len, &rpcode, MSG_DONTWAIT, td);
  346                 if ((so->so_state & (SS_ISDISCONNECTING | SS_ISDISCONNECTED)) ||
  347                     (so->so_rcv.sb_state & SBS_CANTRCVMORE)) {
  348                         nbp->nbp_state = NBST_CLOSED;
  349                         NBDEBUG("session closed by peer\n");
  350                         return ECONNRESET;
  351                 }
  352                 if (error)
  353                         return error;
  354                 if (len == 0 && nbp->nbp_state != NBST_SESSION)
  355                         break;
  356                 /* no data, try again */
  357                 if (rpcode == NB_SSN_KEEPALIVE)
  358                         continue;
  359 
  360                 /*
  361                  * Loop, blocking, for data following the response header.
  362                  *
  363                  * Note that we can't simply block here with MSG_WAITALL for the
  364                  * entire response size, as it may be larger than the TCP
  365                  * slow-start window that the sender employs.  This will result
  366                  * in the sender stalling until the delayed ACK is sent, then
  367                  * resuming slow-start, resulting in very poor performance.
  368                  *
  369                  * Instead, we never request more than NB_SORECEIVE_CHUNK
  370                  * bytes at a time, resulting in an ack being pushed by
  371                  * the TCP code at the completion of each call.
  372                  */
  373                 resid = len;
  374                 while (resid > 0) {
  375                         tm = NULL;
  376                         rcvflg = MSG_WAITALL;
  377                         bzero(&auio, sizeof(auio));
  378                         auio.uio_resid = min(resid, NB_SORECEIVE_CHUNK);
  379                         auio.uio_td = td;
  380                         resid -= auio.uio_resid;
  381                         /*
  382                          * Spin until we have collected everything in
  383                          * this chunk.
  384                          */
  385                         do {
  386                                 rcvflg = MSG_WAITALL;
  387                                 CURVNET_SET(so->so_vnet);
  388                                 error = soreceive(so, (struct sockaddr **)NULL,
  389                                     &auio, &tm, (struct mbuf **)NULL, &rcvflg);
  390                                 CURVNET_RESTORE();
  391                         } while (error == EWOULDBLOCK || error == EINTR ||
  392                                  error == ERESTART);
  393                         if (error)
  394                                 goto out;
  395                         /* short return guarantees unhappiness */
  396                         if (auio.uio_resid > 0) {
  397                                 SMBERROR("packet is shorter than expected\n");
  398                                 error = EPIPE;
  399                                 goto out;
  400                         }
  401                         /* append received chunk to previous chunk(s) */
  402                         if (m == NULL) {
  403                                 m = tm;
  404                         } else {
  405                                 /*
  406                                  * Just glue the new chain on the end.
  407                                  * Consumer will pullup as required.
  408                                  */
  409                                 for (im = m; im->m_next != NULL; im = im->m_next)
  410                                         ;
  411                                 im->m_next = tm;
  412                         }
  413                 }
  414                 /* got a session/message packet? */
  415                 if (nbp->nbp_state == NBST_SESSION &&
  416                     rpcode == NB_SSN_MESSAGE)
  417                         break;
  418                 /* drop packet and try for another */
  419                 NBDEBUG("non-session packet %x\n", rpcode);
  420                 if (m) {
  421                         m_freem(m);
  422                         m = NULL;
  423                 }
  424         }
  425 
  426 out:
  427         if (error) {
  428                 if (m)
  429                         m_freem(m);
  430                 return error;
  431         }
  432         if (mpp)
  433                 *mpp = m;
  434         else
  435                 m_freem(m);
  436         *lenp = len;
  437         *rpcodep = rpcode;
  438         return 0;
  439 }
  440 
  441 /*
  442  * SMB transport interface
  443  */
  444 static int
  445 smb_nbst_create(struct smb_vc *vcp, struct thread *td)
  446 {
  447         struct nbpcb *nbp;
  448 
  449         nbp = malloc(sizeof *nbp, M_NBDATA, M_WAITOK);
  450         bzero(nbp, sizeof *nbp);
  451         nbp->nbp_timo.tv_sec = 15;      /* XXX: sysctl ? */
  452         nbp->nbp_state = NBST_CLOSED;
  453         nbp->nbp_vc = vcp;
  454         nbp->nbp_sndbuf = smb_tcpsndbuf;
  455         nbp->nbp_rcvbuf = smb_tcprcvbuf;
  456         vcp->vc_tdata = nbp;
  457         return 0;
  458 }
  459 
  460 static int
  461 smb_nbst_done(struct smb_vc *vcp, struct thread *td)
  462 {
  463         struct nbpcb *nbp = vcp->vc_tdata;
  464 
  465         if (nbp == NULL)
  466                 return ENOTCONN;
  467         smb_nbst_disconnect(vcp, td);
  468         if (nbp->nbp_laddr)
  469                 free(nbp->nbp_laddr, M_SONAME);
  470         if (nbp->nbp_paddr)
  471                 free(nbp->nbp_paddr, M_SONAME);
  472         free(nbp, M_NBDATA);
  473         return 0;
  474 }
  475 
  476 static int
  477 smb_nbst_bind(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
  478 {
  479         struct nbpcb *nbp = vcp->vc_tdata;
  480         struct sockaddr_nb *snb;
  481         int error, slen;
  482 
  483         NBDEBUG("\n");
  484         error = EINVAL;
  485         do {
  486                 if (nbp->nbp_flags & NBF_LOCADDR)
  487                         break;
  488                 /*
  489                  * It is possible to create NETBIOS name in the kernel,
  490                  * but nothing prevents us to do it in the user space.
  491                  */
  492                 if (sap == NULL)
  493                         break;
  494                 slen = sap->sa_len;
  495                 if (slen < NB_MINSALEN)
  496                         break;
  497                 snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
  498                 if (snb == NULL) {
  499                         error = ENOMEM;
  500                         break;
  501                 }
  502                 nbp->nbp_laddr = snb;
  503                 nbp->nbp_flags |= NBF_LOCADDR;
  504                 error = 0;
  505         } while(0);
  506         return error;
  507 }
  508 
  509 static int
  510 smb_nbst_connect(struct smb_vc *vcp, struct sockaddr *sap, struct thread *td)
  511 {
  512         struct nbpcb *nbp = vcp->vc_tdata;
  513         struct sockaddr_in sin;
  514         struct sockaddr_nb *snb;
  515         struct timespec ts1, ts2;
  516         int error, slen;
  517 
  518         NBDEBUG("\n");
  519         if (nbp->nbp_tso != NULL)
  520                 return EISCONN;
  521         if (nbp->nbp_laddr == NULL)
  522                 return EINVAL;
  523         slen = sap->sa_len;
  524         if (slen < NB_MINSALEN)
  525                 return EINVAL;
  526         if (nbp->nbp_paddr) {
  527                 free(nbp->nbp_paddr, M_SONAME);
  528                 nbp->nbp_paddr = NULL;
  529         }
  530         snb = (struct sockaddr_nb*)sodupsockaddr(sap, M_WAITOK);
  531         if (snb == NULL)
  532                 return ENOMEM;
  533         nbp->nbp_paddr = snb;
  534         sin = snb->snb_addrin;
  535         getnanotime(&ts1);
  536         error = nb_connect_in(nbp, &sin, td);
  537         if (error)
  538                 return error;
  539         getnanotime(&ts2);
  540         timespecsub(&ts2, &ts1);
  541         if (ts2.tv_sec == 0 && ts2.tv_sec == 0)
  542                 ts2.tv_sec = 1;
  543         nbp->nbp_timo = ts2;
  544         timespecadd(&nbp->nbp_timo, &ts2);
  545         timespecadd(&nbp->nbp_timo, &ts2);
  546         timespecadd(&nbp->nbp_timo, &ts2);      /*  * 4 */
  547         error = nbssn_rq_request(nbp, td);
  548         if (error)
  549                 smb_nbst_disconnect(vcp, td);
  550         return error;
  551 }
  552 
  553 static int
  554 smb_nbst_disconnect(struct smb_vc *vcp, struct thread *td)
  555 {
  556         struct nbpcb *nbp = vcp->vc_tdata;
  557         struct socket *so;
  558 
  559         if (nbp == NULL || nbp->nbp_tso == NULL)
  560                 return ENOTCONN;
  561         if ((so = nbp->nbp_tso) != NULL) {
  562                 nbp->nbp_flags &= ~NBF_CONNECTED;
  563                 nbp->nbp_tso = (struct socket *)NULL;
  564                 soshutdown(so, 2);
  565                 soclose(so);
  566         }
  567         if (nbp->nbp_state != NBST_RETARGET) {
  568                 nbp->nbp_state = NBST_CLOSED;
  569         }
  570         return 0;
  571 }
  572 
  573 static int
  574 smb_nbst_send(struct smb_vc *vcp, struct mbuf *m0, struct thread *td)
  575 {
  576         struct nbpcb *nbp = vcp->vc_tdata;
  577         int error;
  578 
  579         if (nbp->nbp_state != NBST_SESSION) {
  580                 error = ENOTCONN;
  581                 goto abort;
  582         }
  583         M_PREPEND(m0, 4, M_WAIT);
  584         nb_sethdr(m0, NB_SSN_MESSAGE, m_fixhdr(m0) - 4);
  585         error = nb_sosend(nbp->nbp_tso, m0, 0, td);
  586         return error;
  587 abort:
  588         if (m0)
  589                 m_freem(m0);
  590         return error;
  591 }
  592 
  593 
  594 static int
  595 smb_nbst_recv(struct smb_vc *vcp, struct mbuf **mpp, struct thread *td)
  596 {
  597         struct nbpcb *nbp = vcp->vc_tdata;
  598         u_int8_t rpcode;
  599         int error, rplen;
  600 
  601         nbp->nbp_flags |= NBF_RECVLOCK;
  602         error = nbssn_recv(nbp, mpp, &rplen, &rpcode, td);
  603         nbp->nbp_flags &= ~NBF_RECVLOCK;
  604         return error;
  605 }
  606 
  607 static void
  608 smb_nbst_timo(struct smb_vc *vcp)
  609 {
  610         return;
  611 }
  612 
  613 static void
  614 smb_nbst_intr(struct smb_vc *vcp)
  615 {
  616         struct nbpcb *nbp = vcp->vc_tdata;
  617 
  618         if (nbp == NULL || nbp->nbp_tso == NULL)
  619                 return;
  620         sorwakeup(nbp->nbp_tso);
  621         sowwakeup(nbp->nbp_tso);
  622 }
  623 
  624 static int
  625 smb_nbst_getparam(struct smb_vc *vcp, int param, void *data)
  626 {
  627         struct nbpcb *nbp = vcp->vc_tdata;
  628 
  629         switch (param) {
  630             case SMBTP_SNDSZ:
  631                 *(int*)data = nbp->nbp_sndbuf;
  632                 break;
  633             case SMBTP_RCVSZ:
  634                 *(int*)data = nbp->nbp_rcvbuf;
  635                 break;
  636             case SMBTP_TIMEOUT:
  637                 *(struct timespec*)data = nbp->nbp_timo;
  638                 break;
  639             default:
  640                 return EINVAL;
  641         }
  642         return 0;
  643 }
  644 
  645 static int
  646 smb_nbst_setparam(struct smb_vc *vcp, int param, void *data)
  647 {
  648         struct nbpcb *nbp = vcp->vc_tdata;
  649 
  650         switch (param) {
  651             case SMBTP_SELECTID:
  652                 nbp->nbp_selectid = data;
  653                 break;
  654             default:
  655                 return EINVAL;
  656         }
  657         return 0;
  658 }
  659 
  660 /*
  661  * Check for fatal errors
  662  */
  663 static int
  664 smb_nbst_fatal(struct smb_vc *vcp, int error)
  665 {
  666         switch (error) {
  667             case ENOTCONN:
  668             case ENETRESET:
  669             case ECONNABORTED:
  670                 return 1;
  671         }
  672         return 0;
  673 }
  674 
  675 
  676 struct smb_tran_desc smb_tran_nbtcp_desc = {
  677         SMBT_NBTCP,
  678         smb_nbst_create, smb_nbst_done,
  679         smb_nbst_bind, smb_nbst_connect, smb_nbst_disconnect,
  680         smb_nbst_send, smb_nbst_recv,
  681         smb_nbst_timo, smb_nbst_intr,
  682         smb_nbst_getparam, smb_nbst_setparam,
  683         smb_nbst_fatal
  684 };
  685
Cache object: 7ce045d8bab9f638fefb5078d05f5f45
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/netsmb/smb_trantcp.c

FreeBSD/Linux Kernel Cross Reference
sys/netsmb/smb_trantcp.c
