protocol.h

硬实时linux补丁rtai下的网络协议栈 最新

/***
 *
 *  include/ipv4/protocol.h
 *
 *  RTnet - real-time networking subsystem
 *  Copyright (C) 1999, 2000 Zentropic Computing, LLC
 *                2002       Ulrich Marx <[e-mail]>
 *                2004, 2005 Jan Kiszka <[e-mail]>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#ifndef __RTNET_PROTOCOL_H_
#define __RTNET_PROTOCOL_H_

#include <rtnet_socket.h>
#include <rtskb.h>


#define MAX_RT_INET_PROTOCOLS   32

/***
 * transport layer protocol
 */
struct rtinet_protocol {
    char                *name;
    unsigned short      protocol;

    struct rtsocket     *(*dest_socket)(struct rtskb *);
    void                (*rcv_handler)(struct rtskb *);
    void                (*err_handler)(struct rtskb *);
    int                 (*init_socket)(struct rtdm_dev_context *,
                                       rtdm_user_info_t *);
};


extern struct rtinet_protocol *rt_inet_protocols[];

#define rt_inet_hashkey(id)  (id & (MAX_RT_INET_PROTOCOLS-1))
extern void rt_inet_add_protocol(struct rtinet_protocol *prot);
extern void rt_inet_del_protocol(struct rtinet_protocol *prot);
extern int rt_inet_socket(struct rtdm_dev_context *context,
                          rtdm_user_info_t *user_info, int protocol);

#endif  /* __RTNET_PROTOCOL_H_ */