/*
|
* List management for the RTDM RTCAN device driver
|
*
|
* Copyright (C) 2005,2006 Sebastian Smolorz
|
* <Sebastian.Smolorz@stud.uni-hannover.de>
|
*
|
*
|
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
*/
|
|
#ifndef __RTCAN_LIST_H_
|
#define __RTCAN_LIST_H_
|
|
#include "rtcan_socket.h"
|
|
|
/*
|
* List element in a single linked list used for registering reception sockets.
|
* Every single struct can_filter which was bound to a socket gets such a
|
* list entry. There is no member for the CAN interface because there is one
|
* reception list for every CAN controller. This is because when a CAN message
|
* is received it is clear from which interface and therefore minimizes
|
* searching time.
|
*/
|
struct rtcan_recv {
|
can_filter_t can_filter; /* filter used for deciding if
|
* a socket wants to get a CAN
|
* message */
|
unsigned int match_count; /* count accepted messages */
|
struct rtcan_socket *sock; /* pointer to registered socket
|
*/
|
struct rtcan_recv *next; /* pointer to next list element
|
*/
|
};
|
|
|
/*
|
* Element in a TX wait queue.
|
*
|
* Every socket holds a TX wait queue where all RT tasks are queued when they
|
* are blocked while waiting to be able to transmit a message via this socket.
|
*
|
* Every sender holds its own element.
|
*/
|
struct tx_wait_queue {
|
struct list_head tx_wait_list; /* List pointers */
|
rtdm_task_t *rt_task; /* Pointer to task handle */
|
};
|
|
|
/* Spinlock for all reception lists and also for some members in
|
* struct rtcan_socket */
|
extern rtdm_lock_t rtcan_recv_list_lock;
|
|
|
#endif /* __RTCAN_LIST_H_ */
|
