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

     /*-
      * Copyright (c) 1980, 1986, 1993
      *      The Regents of the University of California.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)raw_cb.h    8.1 (Berkeley) 6/10/93
     * $FreeBSD$
     */
    
    #ifndef _NET_RAW_CB_H_
    #define _NET_RAW_CB_H_
    
    #include <sys/queue.h>
    
    /*
     * Raw protocol interface control block.  Used to tie a socket to the generic
     * raw interface.
     */
    struct rawcb {
            LIST_ENTRY(rawcb) list;
            struct  socket *rcb_socket;     /* back pointer to socket */
            struct  sockproto rcb_proto;    /* protocol family, protocol */
    };
    
    #define sotorawcb(so)           ((struct rawcb *)(so)->so_pcb)
    
    /*
     * Nominal space allocated to a raw socket.
     */
    #define RAWSNDQ         8192
    #define RAWRCVQ         8192
    
    #ifdef _KERNEL
    extern LIST_HEAD(rawcb_list_head, rawcb) rawcb_list;
    extern struct mtx rawcb_mtx;
    
    /*
     * Generic protosw entries for raw socket protocols.
     */
    pr_ctlinput_t   raw_ctlinput;
    pr_init_t       raw_init;
    
    /*
     * Library routines for raw socket usrreq functions; will always be wrapped
     * so that protocol-specific functions can be handled.
     */
    typedef int (*raw_input_cb_fn)(struct mbuf *, struct sockproto *,
        struct sockaddr *, struct rawcb *);
    
    int      raw_attach(struct socket *, int);
    void     raw_detach(struct rawcb *);
    void     raw_input(struct mbuf *, struct sockproto *, struct sockaddr *);
    void     raw_input_ext(struct mbuf *, struct sockproto *, struct sockaddr *,
                raw_input_cb_fn);
    
    /*
     * Generic pr_usrreqs entries for raw socket protocols, usually wrapped so
     * that protocol-specific functions can be handled.
     */
    extern  struct pr_usrreqs raw_usrreqs;
    #endif
    
    #endif

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