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43 #include <linux/skbuff.h>
44 #include <linux/netdevice.h>
45 #include <linux/list.h>
46 #include <linux/rcupdate.h>
47 #include <linux/can.h>
49 /* af_can rx dispatcher structures */
52 struct hlist_node list;
56 unsigned long matches;
57 void (*func)(struct sk_buff *, void *);
62 #define CAN_SFF_RCV_ARRAY_SZ (1 << CAN_SFF_ID_BITS)
63 #define CAN_EFF_RCV_HASH_BITS 10
64 #define CAN_EFF_RCV_ARRAY_SZ (1 << CAN_EFF_RCV_HASH_BITS)
66 enum { RX_ERR, RX_ALL, RX_FIL, RX_INV, RX_MAX };
68 /* per device receive filters linked at dev->ml_priv */
69 struct dev_rcv_lists {
70 struct hlist_head rx[RX_MAX];
71 struct hlist_head rx_sff[CAN_SFF_RCV_ARRAY_SZ];
72 struct hlist_head rx_eff[CAN_EFF_RCV_ARRAY_SZ];
73 int remove_on_zero_entries;
77 /* statistic structures */
79 /* can be reset e.g. by can_init_stats() */
81 unsigned long jiffies_init;
83 unsigned long rx_frames;
84 unsigned long tx_frames;
85 unsigned long matches;
87 unsigned long total_rx_rate;
88 unsigned long total_tx_rate;
89 unsigned long total_rx_match_ratio;
91 unsigned long current_rx_rate;
92 unsigned long current_tx_rate;
93 unsigned long current_rx_match_ratio;
95 unsigned long max_rx_rate;
96 unsigned long max_tx_rate;
97 unsigned long max_rx_match_ratio;
99 unsigned long rx_frames_delta;
100 unsigned long tx_frames_delta;
101 unsigned long matches_delta;
104 /* persistent statistics */
106 unsigned long stats_reset;
107 unsigned long user_reset;
108 unsigned long rcv_entries;
109 unsigned long rcv_entries_max;
112 /* receive filters subscribed for 'all' CAN devices */
113 extern struct dev_rcv_lists can_rx_alldev_list;
115 /* function prototypes for the CAN networklayer procfs (proc.c) */
116 void can_init_proc(void);
117 void can_remove_proc(void);
118 void can_stat_update(unsigned long data);
120 /* structures and variables from af_can.c needed in proc.c for reading */
121 extern struct timer_list can_stattimer; /* timer for statistics update */
122 extern struct s_stats can_stats; /* packet statistics */
123 extern struct s_pstats can_pstats; /* receive list statistics */
124 extern struct hlist_head can_rx_dev_list; /* rx dispatcher structures */
126 #endif /* AF_CAN_H */