/* * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * 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. * 3. Neither the name of Volkswagen nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * Alternatively, provided that this notice is retained in full, this * software may be distributed under the terms of the GNU General * Public License ("GPL") version 2, in which case the provisions of the * GPL apply INSTEAD OF those given above. * * The provided data structures and external interfaces from this code * are not restricted to be used by modules with a GPL compatible license. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT * OWNER 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. * */ #ifndef AF_CAN_H #define AF_CAN_H #include #include #include #include #include /* af_can rx dispatcher structures */ struct receiver { struct hlist_node list; struct rcu_head rcu; canid_t can_id; canid_t mask; unsigned long matches; void (*func)(struct sk_buff *, void *); void *data; char *ident; }; #define CAN_SFF_RCV_ARRAY_SZ (1 << CAN_SFF_ID_BITS) #define CAN_EFF_RCV_HASH_BITS 10 #define CAN_EFF_RCV_ARRAY_SZ (1 << CAN_EFF_RCV_HASH_BITS) enum { RX_ERR, RX_ALL, RX_FIL, RX_INV, RX_MAX }; /* per device receive filters linked at dev->ml_priv */ struct dev_rcv_lists { struct hlist_head rx[RX_MAX]; struct hlist_head rx_sff[CAN_SFF_RCV_ARRAY_SZ]; struct hlist_head rx_eff[CAN_EFF_RCV_ARRAY_SZ]; int remove_on_zero_entries; int entries; }; /* statistic structures */ /* can be reset e.g. by can_init_stats() */ struct s_stats { unsigned long jiffies_init; unsigned long rx_frames; unsigned long tx_frames; unsigned long matches; unsigned long total_rx_rate; unsigned long total_tx_rate; unsigned long total_rx_match_ratio; unsigned long current_rx_rate; unsigned long current_tx_rate; unsigned long current_rx_match_ratio; unsigned long max_rx_rate; unsigned long max_tx_rate; unsigned long max_rx_match_ratio; unsigned long rx_frames_delta; unsigned long tx_frames_delta; unsigned long matches_delta; }; /* persistent statistics */ struct s_pstats { unsigned long stats_reset; unsigned long user_reset; unsigned long rcv_entries; unsigned long rcv_entries_max; }; /* receive filters subscribed for 'all' CAN devices */ extern struct dev_rcv_lists can_rx_alldev_list; /* function prototypes for the CAN networklayer procfs (proc.c) */ void can_init_proc(void); void can_remove_proc(void); void can_stat_update(unsigned long data); /* structures and variables from af_can.c needed in proc.c for reading */ extern struct timer_list can_stattimer; /* timer for statistics update */ extern struct s_stats can_stats; /* packet statistics */ extern struct s_pstats can_pstats; /* receive list statistics */ extern struct hlist_head can_rx_dev_list; /* rx dispatcher structures */ #endif /* AF_CAN_H */ ion value='9'>9space:mode:
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