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


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FreeBSD/Linux Kernel Cross Reference
sys/net/raw_cb.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1980, 1986, 1993
    5  *      The Regents of the University of California.
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  * 3. Neither the name of the University nor the names of its 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 REGENTS 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 REGENTS 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  *      @(#)raw_cb.h    8.1 (Berkeley) 6/10/93
   33  * $FreeBSD: releng/12.0/sys/net/raw_cb.h 326023 2017-11-20 19:43:44Z pfg $
   34  */
   35 
   36 #ifndef _NET_RAW_CB_H_
   37 #define _NET_RAW_CB_H_
   38 
   39 #include <sys/queue.h>
   40 
   41 /*
   42  * Raw protocol interface control block.  Used to tie a socket to the generic
   43  * raw interface.
   44  */
   45 struct rawcb {
   46         LIST_ENTRY(rawcb) list;
   47         struct  socket *rcb_socket;     /* back pointer to socket */
   48         struct  sockproto rcb_proto;    /* protocol family, protocol */
   49 };
   50 
   51 #define sotorawcb(so)           ((struct rawcb *)(so)->so_pcb)
   52 
   53 /*
   54  * Nominal space allocated to a raw socket.
   55  */
   56 #define RAWSNDQ         8192
   57 #define RAWRCVQ         8192
   58 
   59 #ifdef _KERNEL
   60 VNET_DECLARE(LIST_HEAD(rawcb_list_head, rawcb), rawcb_list);
   61 #define V_rawcb_list    VNET(rawcb_list)
   62 
   63 extern struct mtx rawcb_mtx;
   64 
   65 /*
   66  * Generic protosw entries for raw socket protocols.
   67  */
   68 pr_ctlinput_t   raw_ctlinput;
   69 pr_init_t       raw_init;
   70 
   71 /*
   72  * Library routines for raw socket usrreq functions; will always be wrapped
   73  * so that protocol-specific functions can be handled.
   74  */
   75 typedef int (*raw_input_cb_fn)(struct mbuf *, struct sockproto *,
   76     struct sockaddr *, struct rawcb *);
   77 
   78 int      raw_attach(struct socket *, int);
   79 void     raw_detach(struct rawcb *);
   80 void     raw_input(struct mbuf *, struct sockproto *, struct sockaddr *);
   81 void     raw_input_ext(struct mbuf *, struct sockproto *, struct sockaddr *,
   82             raw_input_cb_fn);
   83 
   84 /*
   85  * Generic pr_usrreqs entries for raw socket protocols, usually wrapped so
   86  * that protocol-specific functions can be handled.
   87  */
   88 extern  struct pr_usrreqs raw_usrreqs;
   89 #endif
   90 
   91 #endif

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