The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/netipx/ipx.c

Version: -  FREEBSD  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-2  -  FREEBSD-11-1  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-4  -  FREEBSD-10-3  -  FREEBSD-10-2  -  FREEBSD-10-1  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-3  -  FREEBSD-9-2  -  FREEBSD-9-1  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-4  -  FREEBSD-8-3  -  FREEBSD-8-2  -  FREEBSD-8-1  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-4  -  FREEBSD-7-3  -  FREEBSD-7-2  -  FREEBSD-7-1  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-4  -  FREEBSD-6-3  -  FREEBSD-6-2  -  FREEBSD-6-1  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-5  -  FREEBSD-5-4  -  FREEBSD-5-3  -  FREEBSD-5-2  -  FREEBSD-5-1  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  linux-2.6  -  linux-2.4.22  -  MK83  -  MK84  -  PLAN9  -  DFBSD  -  NETBSD  -  NETBSD5  -  NETBSD4  -  NETBSD3  -  NETBSD20  -  OPENBSD  -  xnu-517  -  xnu-792  -  xnu-792.6.70  -  xnu-1228  -  xnu-1456.1.26  -  xnu-1699.24.8  -  xnu-2050.18.24  -  OPENSOLARIS  -  minix-3-1-1 
SearchContext: -  none  -  3  -  10 

    1 /*-
    2  * Copyright (c) 1984, 1985, 1986, 1987, 1993
    3  *      The Regents of the University of California.
    4  * Copyright (c) 2009 Robert N. M. Watson
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 4. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  * Copyright (c) 1995, Mike Mitchell
   32  *
   33  * Redistribution and use in source and binary forms, with or without
   34  * modification, are permitted provided that the following conditions
   35  * are met:
   36  * 1. Redistributions of source code must retain the above copyright
   37  *    notice, this list of conditions and the following disclaimer.
   38  * 2. Redistributions in binary form must reproduce the above copyright
   39  *    notice, this list of conditions and the following disclaimer in the
   40  *    documentation and/or other materials provided with the distribution.
   41  * 3. All advertising materials mentioning features or use of this software
   42  *    must display the following acknowledgement:
   43  *      This product includes software developed by the University of
   44  *      California, Berkeley and its contributors.
   45  * 4. Neither the name of the University nor the names of its contributors
   46  *    may be used to endorse or promote products derived from this software
   47  *    without specific prior written permission.
   48  *
   49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   59  * SUCH DAMAGE.
   60  *
   61  *      @(#)ipx.c
   62  */
   63 
   64 #include <sys/cdefs.h>
   65 __FBSDID("$FreeBSD: releng/10.1/sys/netipx/ipx.c 229621 2012-01-05 19:00:36Z jhb $");
   66 
   67 #include <sys/param.h>
   68 #include <sys/kernel.h>
   69 #include <sys/systm.h>
   70 #include <sys/lock.h>
   71 #include <sys/malloc.h>
   72 #include <sys/priv.h>
   73 #include <sys/rwlock.h>
   74 #include <sys/sockio.h>
   75 #include <sys/socket.h>
   76 
   77 #include <net/if.h>
   78 #include <net/route.h>
   79 
   80 #include <netipx/ipx.h>
   81 #include <netipx/ipx_if.h>
   82 #include <netipx/ipx_var.h>
   83 
   84 /*
   85  * The IPX-layer address list is protected by ipx_ifaddr_rw.
   86  */
   87 struct rwlock            ipx_ifaddr_rw;
   88 struct ipx_ifaddrhead    ipx_ifaddrhead;
   89 
   90 static void     ipx_ifscrub(struct ifnet *ifp, struct ipx_ifaddr *ia);
   91 static int      ipx_ifinit(struct ifnet *ifp, struct ipx_ifaddr *ia,
   92                     struct sockaddr_ipx *sipx, int scrub);
   93 
   94 /*
   95  * Generic internet control operations (ioctl's).
   96  */
   97 int
   98 ipx_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp,
   99     struct thread *td)
  100 {
  101         struct ifreq *ifr = (struct ifreq *)data;
  102         struct ipx_aliasreq *ifra = (struct ipx_aliasreq *)data;
  103         struct ipx_ifaddr *ia;
  104         struct ifaddr *ifa;
  105         int dstIsNew, hostIsNew;
  106         int error, priv;
  107 
  108         /*
  109          * Find address for this interface, if it exists.
  110          */
  111         if (ifp == NULL)
  112                 return (EADDRNOTAVAIL);
  113 
  114         IPX_IFADDR_RLOCK();
  115         TAILQ_FOREACH(ia, &ipx_ifaddrhead, ia_link) {
  116                 if (ia->ia_ifp == ifp)
  117                         break;
  118         }
  119         if (ia != NULL)
  120                 ifa_ref(&ia->ia_ifa);
  121         IPX_IFADDR_RUNLOCK();
  122 
  123         error = 0;
  124         switch (cmd) {
  125         case SIOCGIFADDR:
  126                 if (ia == NULL) {
  127                         error = EADDRNOTAVAIL;
  128                         goto out;
  129                 }
  130                 *(struct sockaddr_ipx *)&ifr->ifr_addr = ia->ia_addr;
  131                 goto out;
  132 
  133         case SIOCGIFBRDADDR:
  134                 if (ia == NULL) {
  135                         error = EADDRNOTAVAIL;
  136                         goto out;
  137                 }
  138                 if ((ifp->if_flags & IFF_BROADCAST) == 0) {
  139                         error = EINVAL;
  140                         goto out;
  141                 }
  142                 *(struct sockaddr_ipx *)&ifr->ifr_dstaddr = ia->ia_broadaddr;
  143                 goto out;
  144 
  145         case SIOCGIFDSTADDR:
  146                 if (ia == NULL) {
  147                         error = EADDRNOTAVAIL;
  148                         goto out;
  149                 }
  150                 if ((ifp->if_flags & IFF_POINTOPOINT) == 0) {
  151                         error = EINVAL;
  152                         goto out;
  153                 }
  154                 *(struct sockaddr_ipx *)&ifr->ifr_dstaddr = ia->ia_dstaddr;
  155                 goto out;
  156         }
  157 
  158         switch (cmd) {
  159         case SIOCAIFADDR:
  160         case SIOCDIFADDR:
  161                 priv = (cmd == SIOCAIFADDR) ? PRIV_NET_ADDIFADDR :
  162                     PRIV_NET_DELIFADDR;
  163                 if (td && (error = priv_check(td, priv)) != 0)
  164                         goto out;
  165 
  166                 IPX_IFADDR_RLOCK();
  167                 if (ifra->ifra_addr.sipx_family == AF_IPX) {
  168                         struct ipx_ifaddr *oia;
  169 
  170                         for (oia = ia; ia; ia = TAILQ_NEXT(ia, ia_link)) {
  171                                 if (ia->ia_ifp == ifp  &&
  172                                     ipx_neteq(ia->ia_addr.sipx_addr,
  173                                     ifra->ifra_addr.sipx_addr))
  174                                         break;
  175                         }
  176                         if (oia != NULL && oia != ia)
  177                                 ifa_free(&oia->ia_ifa);
  178                         if (ia != NULL && oia != ia)
  179                                 ifa_ref(&ia->ia_ifa);
  180                 }
  181                 IPX_IFADDR_RUNLOCK();
  182                 if (cmd == SIOCDIFADDR && ia == NULL) {
  183                         error = EADDRNOTAVAIL;
  184                         goto out;
  185                 }
  186                 /* FALLTHROUGH */
  187 
  188         case SIOCSIFADDR:
  189         case SIOCSIFDSTADDR:
  190                 if (td && (error = priv_check(td, PRIV_NET_SETLLADDR)) != 0)
  191                         goto out;
  192                 if (ia == NULL) {
  193                         ia = malloc(sizeof(*ia), M_IFADDR, M_NOWAIT | M_ZERO);
  194                         if (ia == NULL) {
  195                                 error = ENOBUFS;
  196                                 goto out;
  197                         }
  198                         ifa = (struct ifaddr *)ia;
  199                         ifa_init(ifa);
  200                         ia->ia_ifp = ifp;
  201                         ifa->ifa_addr = (struct sockaddr *)&ia->ia_addr;
  202                         ifa->ifa_netmask = (struct sockaddr *)&ipx_netmask;
  203                         ifa->ifa_dstaddr = (struct sockaddr *)&ia->ia_dstaddr;
  204                         if (ifp->if_flags & IFF_BROADCAST) {
  205                                 ia->ia_broadaddr.sipx_family = AF_IPX;
  206                                 ia->ia_broadaddr.sipx_len =
  207                                     sizeof(ia->ia_addr);
  208                                 ia->ia_broadaddr.sipx_addr.x_host =
  209                                     ipx_broadhost;
  210                         }
  211                         ifa_ref(&ia->ia_ifa);           /* ipx_ifaddrhead */
  212                         IPX_IFADDR_WLOCK();
  213                         TAILQ_INSERT_TAIL(&ipx_ifaddrhead, ia, ia_link);
  214                         IPX_IFADDR_WUNLOCK();
  215 
  216                         ifa_ref(&ia->ia_ifa);           /* if_addrhead */
  217                         IF_ADDR_WLOCK(ifp);
  218                         TAILQ_INSERT_TAIL(&ifp->if_addrhead, ifa, ifa_link);
  219                         IF_ADDR_WUNLOCK(ifp);
  220                 }
  221                 break;
  222 
  223         default:
  224                 if (td && (error = priv_check(td, PRIV_NET_HWIOCTL)) != 0)
  225                         goto out;
  226         }
  227 
  228         switch (cmd) {
  229         case SIOCSIFDSTADDR:
  230                 if ((ifp->if_flags & IFF_POINTOPOINT) == 0) {
  231                         error = EINVAL;
  232                         goto out;
  233                 }
  234                 if (ia->ia_flags & IFA_ROUTE) {
  235                         rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
  236                         ia->ia_flags &= ~IFA_ROUTE;
  237                 }
  238                 if (ifp->if_ioctl) {
  239                         error = (*ifp->if_ioctl)(ifp, SIOCSIFDSTADDR,
  240                             (void *)ia);
  241                         if (error)
  242                                 goto out;
  243                 }
  244                 *(struct sockaddr *)&ia->ia_dstaddr = ifr->ifr_dstaddr;
  245                 goto out;
  246 
  247         case SIOCSIFADDR:
  248                 error = ipx_ifinit(ifp, ia,
  249                     (struct sockaddr_ipx *)&ifr->ifr_addr, 1);
  250                 goto out;
  251 
  252         case SIOCDIFADDR:
  253                 ipx_ifscrub(ifp, ia);
  254                 ifa = (struct ifaddr *)ia;
  255 
  256                 IF_ADDR_WLOCK(ifp);
  257                 TAILQ_REMOVE(&ifp->if_addrhead, ifa, ifa_link);
  258                 IF_ADDR_WUNLOCK(ifp);
  259                 ifa_free(ifa);                          /* if_addrhead */
  260 
  261                 IPX_IFADDR_WLOCK();
  262                 TAILQ_REMOVE(&ipx_ifaddrhead, ia, ia_link);
  263                 IPX_IFADDR_WUNLOCK();
  264                 ifa_free(&ia->ia_ifa);                  /* ipx_ifaddrhead */
  265                 goto out;
  266 
  267         case SIOCAIFADDR:
  268                 dstIsNew = 0;
  269                 hostIsNew = 1;
  270                 if (ia->ia_addr.sipx_family == AF_IPX) {
  271                         if (ifra->ifra_addr.sipx_len == 0) {
  272                                 ifra->ifra_addr = ia->ia_addr;
  273                                 hostIsNew = 0;
  274                         } else if (ipx_neteq(ifra->ifra_addr.sipx_addr,
  275                                          ia->ia_addr.sipx_addr))
  276                                 hostIsNew = 0;
  277                 }
  278                 if ((ifp->if_flags & IFF_POINTOPOINT) &&
  279                     (ifra->ifra_dstaddr.sipx_family == AF_IPX)) {
  280                         if (hostIsNew == 0)
  281                                 ipx_ifscrub(ifp, ia);
  282                         ia->ia_dstaddr = ifra->ifra_dstaddr;
  283                         dstIsNew  = 1;
  284                 }
  285                 if (ifra->ifra_addr.sipx_family == AF_IPX &&
  286                                             (hostIsNew || dstIsNew))
  287                         error = ipx_ifinit(ifp, ia, &ifra->ifra_addr, 0);
  288                 goto out;
  289 
  290         default:
  291                 if (ifp->if_ioctl == NULL) {
  292                         error = EOPNOTSUPP;
  293                         goto out;
  294                 }
  295                 error = ((*ifp->if_ioctl)(ifp, cmd, data));
  296         }
  297 
  298 out:
  299         if (ia != NULL)
  300                 ifa_free(&ia->ia_ifa);
  301         return (error);
  302 }
  303 
  304 /*
  305  * Delete any previous route for an old address.
  306  */
  307 static void
  308 ipx_ifscrub(struct ifnet *ifp, struct ipx_ifaddr *ia)
  309 {
  310 
  311         if (ia->ia_flags & IFA_ROUTE) {
  312                 if (ifp->if_flags & IFF_POINTOPOINT) {
  313                         rtinit(&(ia->ia_ifa), (int)RTM_DELETE, RTF_HOST);
  314                 } else
  315                         rtinit(&(ia->ia_ifa), (int)RTM_DELETE, 0);
  316                 ia->ia_flags &= ~IFA_ROUTE;
  317         }
  318 }
  319 
  320 /*
  321  * Initialize an interface's internet address and routing table entry.
  322  */
  323 static int
  324 ipx_ifinit(struct ifnet *ifp, struct ipx_ifaddr *ia,
  325     struct sockaddr_ipx *sipx, int scrub)
  326 {
  327         struct sockaddr_ipx oldaddr;
  328         int s = splimp(), error;
  329 
  330         /*
  331          * Set up new addresses.
  332          */
  333         oldaddr = ia->ia_addr;
  334         ia->ia_addr = *sipx;
  335 
  336         /*
  337          * The convention we shall adopt for naming is that a supplied
  338          * address of zero means that "we don't care".  Use the MAC address
  339          * of the interface.  If it is an interface without a MAC address,
  340          * like a serial line, the address must be supplied.
  341          *
  342          * Give the interface a chance to initialize if this is its first
  343          * address, and to validate the address if necessary.
  344          */
  345         if (ifp->if_ioctl != NULL &&
  346             (error = (*ifp->if_ioctl)(ifp, SIOCSIFADDR, (void *)ia))) {
  347                 ia->ia_addr = oldaddr;
  348                 splx(s);
  349                 return (error);
  350         }
  351         splx(s);
  352         ia->ia_ifa.ifa_metric = ifp->if_metric;
  353 
  354         /*
  355          * Add route for the network.
  356          */
  357         if (scrub) {
  358                 ia->ia_ifa.ifa_addr = (struct sockaddr *)&oldaddr;
  359                 ipx_ifscrub(ifp, ia);
  360                 ia->ia_ifa.ifa_addr = (struct sockaddr *)&ia->ia_addr;
  361         }
  362         if (ifp->if_flags & IFF_POINTOPOINT)
  363                 rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_HOST|RTF_UP);
  364         else {
  365                 ia->ia_broadaddr.sipx_addr.x_net = ia->ia_addr.sipx_addr.x_net;
  366                 rtinit(&(ia->ia_ifa), (int)RTM_ADD, RTF_UP);
  367         }
  368         ia->ia_flags |= IFA_ROUTE;
  369         return (0);
  370 }
  371 
  372 /*
  373  * Return address info for specified internet network.
  374  */
  375 struct ipx_ifaddr *
  376 ipx_iaonnetof(struct ipx_addr *dst)
  377 {
  378         struct ipx_ifaddr *ia;
  379         struct ipx_addr *compare;
  380         struct ifnet *ifp;
  381         struct ipx_ifaddr *ia_maybe = NULL;
  382         union ipx_net net = dst->x_net;
  383 
  384         IPX_IFADDR_LOCK_ASSERT();
  385 
  386         TAILQ_FOREACH(ia, &ipx_ifaddrhead, ia_link) {
  387                 if ((ifp = ia->ia_ifp) != NULL) {
  388                         if (ifp->if_flags & IFF_POINTOPOINT) {
  389                                 compare = &satoipx_addr(ia->ia_dstaddr);
  390                                 if (ipx_hosteq(*dst, *compare))
  391                                         return (ia);
  392                                 if (ipx_neteqnn(net,
  393                                     ia->ia_addr.sipx_addr.x_net))
  394                                         ia_maybe = ia;
  395                         } else {
  396                                 if (ipx_neteqnn(net,
  397                                     ia->ia_addr.sipx_addr.x_net))
  398                                         return (ia);
  399                         }
  400                 }
  401         }
  402         return (ia_maybe);
  403 }
  404 
  405 void
  406 ipx_printhost(struct ipx_addr *addr)
  407 {
  408         u_short port;
  409         struct ipx_addr work = *addr;
  410         char *p; u_char *q;
  411         char *net = "", *host = "";
  412         char cport[10], chost[15], cnet[15];
  413 
  414         port = ntohs(work.x_port);
  415 
  416         if (ipx_nullnet(work) && ipx_nullhost(work)) {
  417                 if (port)
  418                         printf("*.%x", port);
  419                 else
  420                         printf("*.*");
  421 
  422                 return;
  423         }
  424 
  425         if (ipx_wildnet(work))
  426                 net = "any";
  427         else if (ipx_nullnet(work))
  428                 net = "*";
  429         else {
  430                 q = work.x_net.c_net;
  431                 snprintf(cnet, sizeof(cnet), "%x%x%x%x",
  432                         q[0], q[1], q[2], q[3]);
  433                 for (p = cnet; *p == '' && p < cnet + 8; p++)
  434                         continue;
  435                 net = p;
  436         }
  437 
  438         if (ipx_wildhost(work))
  439                 host = "any";
  440         else if (ipx_nullhost(work))
  441                 host = "*";
  442         else {
  443                 q = work.x_host.c_host;
  444                 snprintf(chost, sizeof(chost), "%x%x%x%x%x%x",
  445                         q[0], q[1], q[2], q[3], q[4], q[5]);
  446                 for (p = chost; *p == '' && p < chost + 12; p++)
  447                         continue;
  448                 host = p;
  449         }
  450 
  451         if (port) {
  452                 if (strcmp(host, "*") == 0) {
  453                         host = "";
  454                         snprintf(cport, sizeof(cport), "%x", port);
  455                 } else
  456                         snprintf(cport, sizeof(cport), ".%x", port);
  457         } else
  458                 *cport = 0;
  459 
  460         printf("%s.%s%s", net, host, cport);
  461 }

Cache object: dbec44ce1985021f7cd01e2cecd337df


[ 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.