raw_usrreq.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) 1980, 1986, 1993
    3  *      The Regents of the University of California.
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 4. Neither the name of the University nor the names of its contributors
   15  *    may be used to endorse or promote products derived from this software
   16  *    without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  *
   30  *      @(#)raw_usrreq.c        8.1 (Berkeley) 6/10/93
   31  * $FreeBSD$
   32  */
   33 
   34 #include <sys/param.h>
   35 #include <sys/kernel.h>
   36 #include <sys/lock.h>
   37 #include <sys/malloc.h>
   38 #include <sys/mbuf.h>
   39 #include <sys/mutex.h>
   40 #include <sys/priv.h>
   41 #include <sys/protosw.h>
   42 #include <sys/signalvar.h>
   43 #include <sys/socket.h>
   44 #include <sys/socketvar.h>
   45 #include <sys/sx.h>
   46 #include <sys/systm.h>
   47 
   48 #include <net/raw_cb.h>
   49 
   50 MTX_SYSINIT(rawcb_mtx, &rawcb_mtx, "rawcb", MTX_DEF);
   51 
   52 /*
   53  * Initialize raw connection block q.
   54  */
   55 void
   56 raw_init(void)
   57 {
   58 
   59         LIST_INIT(&rawcb_list);
   60 }
   61 
   62 /*
   63  * Raw protocol input routine.  Find the socket associated with the packet(s)
   64  * and move them over.  If nothing exists for this packet, drop it.
   65  */
   66 /*
   67  * Raw protocol interface.
   68  */
   69 void
   70 raw_input(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src)
   71 {
   72 
   73         return (raw_input_ext(m0, proto, src, NULL));
   74 }
   75 
   76 void
   77 raw_input_ext(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src,
   78     raw_input_cb_fn cb)
   79 {
   80         struct rawcb *rp;
   81         struct mbuf *m = m0;
   82         struct socket *last;
   83 
   84         last = 0;
   85         mtx_lock(&rawcb_mtx);
   86         LIST_FOREACH(rp, &rawcb_list, list) {
   87                 if (rp->rcb_proto.sp_family != proto->sp_family)
   88                         continue;
   89                 if (rp->rcb_proto.sp_protocol  &&
   90                     rp->rcb_proto.sp_protocol != proto->sp_protocol)
   91                         continue;
   92                 if (cb != NULL && (*cb)(m, proto, src, rp) != 0)
   93                         continue;
   94                 if (last) {
   95                         struct mbuf *n;
   96                         n = m_copy(m, 0, (int)M_COPYALL);
   97                         if (n) {
   98                                 if (sbappendaddr(&last->so_rcv, src,
   99                                     n, (struct mbuf *)0) == 0)
  100                                         /* should notify about lost packet */
  101                                         m_freem(n);
  102                                 else
  103                                         sorwakeup(last);
  104                         }
  105                 }
  106                 last = rp->rcb_socket;
  107         }
  108         if (last) {
  109                 if (sbappendaddr(&last->so_rcv, src,
  110                     m, (struct mbuf *)0) == 0)
  111                         m_freem(m);
  112                 else
  113                         sorwakeup(last);
  114         } else
  115                 m_freem(m);
  116         mtx_unlock(&rawcb_mtx);
  117 }
  118 
  119 /*ARGSUSED*/
  120 void
  121 raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy)
  122 {
  123 
  124         if (cmd < 0 || cmd >= PRC_NCMDS)
  125                 return;
  126         /* INCOMPLETE */
  127 }
  128 
  129 static void
  130 raw_uabort(struct socket *so)
  131 {
  132 
  133         KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL"));
  134 
  135         soisdisconnected(so);
  136 }
  137 
  138 static void
  139 raw_uclose(struct socket *so)
  140 {
  141 
  142         KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL"));
  143 
  144         soisdisconnected(so);
  145 }
  146 
  147 /* pru_accept is EOPNOTSUPP */
  148 
  149 static int
  150 raw_uattach(struct socket *so, int proto, struct thread *td)
  151 {
  152         int error;
  153 
  154         /*
  155          * Implementors of raw sockets will already have allocated the PCB,
  156          * so it must be non-NULL here.
  157          */
  158         KASSERT(sotorawcb(so) != NULL, ("raw_uattach: so_pcb == NULL"));
  159 
  160         if (td != NULL) {
  161                 error = priv_check(td, PRIV_NET_RAW);
  162                 if (error)
  163                         return (error);
  164         }
  165         return (raw_attach(so, proto));
  166 }
  167 
  168 static int
  169 raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
  170 {
  171 
  172         return (EINVAL);
  173 }
  174 
  175 static int
  176 raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
  177 {
  178 
  179         return (EINVAL);
  180 }
  181 
  182 /* pru_connect2 is EOPNOTSUPP */
  183 /* pru_control is EOPNOTSUPP */
  184 
  185 static void
  186 raw_udetach(struct socket *so)
  187 {
  188         struct rawcb *rp = sotorawcb(so);
  189 
  190         KASSERT(rp != NULL, ("raw_udetach: rp == NULL"));
  191 
  192         raw_detach(rp);
  193 }
  194 
  195 static int
  196 raw_udisconnect(struct socket *so)
  197 {
  198 
  199         KASSERT(sotorawcb(so) != NULL, ("raw_udisconnect: rp == NULL"));
  200 
  201         return (ENOTCONN);
  202 }
  203 
  204 /* pru_listen is EOPNOTSUPP */
  205 
  206 static int
  207 raw_upeeraddr(struct socket *so, struct sockaddr **nam)
  208 {
  209 
  210         KASSERT(sotorawcb(so) != NULL, ("raw_upeeraddr: rp == NULL"));
  211 
  212         return (ENOTCONN);
  213 }
  214 
  215 /* pru_rcvd is EOPNOTSUPP */
  216 /* pru_rcvoob is EOPNOTSUPP */
  217 
  218 static int
  219 raw_usend(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
  220     struct mbuf *control, struct thread *td)
  221 {
  222 
  223         KASSERT(sotorawcb(so) != NULL, ("raw_usend: rp == NULL"));
  224 
  225         if ((flags & PRUS_OOB) || (control && control->m_len)) {
  226                 /* XXXRW: Should control also be freed here? */
  227                 if (m != NULL)
  228                         m_freem(m);
  229                 return (EOPNOTSUPP);
  230         }
  231 
  232         /*
  233          * For historical (bad?) reasons, we effectively ignore the address
  234          * argument to sendto(2).  Perhaps we should return an error instead?
  235          */
  236         return ((*so->so_proto->pr_output)(m, so));
  237 }
  238 
  239 /* pru_sense is null */
  240 
  241 static int
  242 raw_ushutdown(struct socket *so)
  243 {
  244 
  245         KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL"));
  246 
  247         socantsendmore(so);
  248         return (0);
  249 }
  250 
  251 static int
  252 raw_usockaddr(struct socket *so, struct sockaddr **nam)
  253 {
  254 
  255         KASSERT(sotorawcb(so) != NULL, ("raw_usockaddr: rp == NULL"));
  256 
  257         return (EINVAL);
  258 }
  259 
  260 struct pr_usrreqs raw_usrreqs = {
  261         .pru_abort =            raw_uabort,
  262         .pru_attach =           raw_uattach,
  263         .pru_bind =             raw_ubind,
  264         .pru_connect =          raw_uconnect,
  265         .pru_detach =           raw_udetach, 
  266         .pru_disconnect =       raw_udisconnect,
  267         .pru_peeraddr =         raw_upeeraddr,
  268         .pru_send =             raw_usend,
  269         .pru_shutdown =         raw_ushutdown,
  270         .pru_sockaddr =         raw_usockaddr,
  271         .pru_close =            raw_uclose,
  272 };

Cache object: 89d6be0560eb433bff8d01ef2fa55b0d

[ 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/net/raw_usrreq.c

FreeBSD/Linux Kernel Cross Reference
sys/net/raw_usrreq.c