diff options
Diffstat (limited to 'include/net/ax25dev.h')
| -rw-r--r-- | include/net/ax25dev.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/include/net/ax25dev.h b/include/net/ax25dev.h new file mode 100644 index 000000000..f2e125e6b --- /dev/null +++ b/include/net/ax25dev.h @@ -0,0 +1,164 @@ +/* + * include/net/ax25dev.h + * + * intra-kernel interface declaration, anything needed by device drivers for + * AX.25 interfaces is defined here. + * + */ + +#ifndef _NET_AX25DEV_H +#define _NET_AX25DEV_H + +#include <linux/netdevice.h> +#include <linux/sysctl.h> +#include <linux/tqueue.h> +#include <linux/timer.h> + +#ifndef AX25_TICS +#define AX25_TICS (HZ/10) +#endif + +#define AX25_MAX_DEVICES 20 /* Max No of AX.25 devices */ +#define AX25_DEV_MAGIC 0x88babe73 + +enum { + AX25_VALUES_IPDEFMODE, /* 0=DG 1=VC */ + AX25_VALUES_AXDEFMODE, /* 0=Normal 1=Extended Seq Nos */ + AX25_VALUES_BACKOFF, /* 0=None 1=Linear 2=Exponential */ + AX25_VALUES_CONMODE, /* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */ + AX25_VALUES_WINDOW, /* Default window size for standard AX.25 */ + AX25_VALUES_EWINDOW, /* Default window size for extended AX.25 */ + AX25_VALUES_T1, /* Default T1 timeout value */ + AX25_VALUES_T2, /* Default T2 timeout value */ + AX25_VALUES_T3, /* Default T3 timeout value */ + AX25_VALUES_IDLE, /* Connected mode idle timer */ + AX25_VALUES_N2, /* Default N2 value */ + AX25_VALUES_PACLEN, /* AX.25 MTU */ + AX25_VALUES_PROTOCOL, /* What is this? */ + AX25_VALUES_DAMA_SLAVE_TIMEOUT, /* DAMA */ + AX25_VALUES_MEDIA_DUPLEX, /* Duplex type */ + AX25_VALUES_MEDIA_TXDELAY, /* TX-Delay */ + AX25_VALUES_MEDIA_TXTAIL, /* TX-Tail */ + AX25_VALUES_MEDIA_TXBITRATE, /* TX-Bitrate */ + AX25_VALUES_MEDIA_RXBITRATE, /* RX-Bitrate */ + AX25_VALUES_MEDIA_SLOTTIME, /* Slottime */ + AX25_VALUES_MEDIA_PPERSISTENCE, /* P-Persistence */ + AX25_VALUES_MEDIA_AUTO_ADJUST, /* Enable/disable auto adjustment */ + AX25_VALUES_DUMMY_0, /* For future use */ + AX25_VALUES_DUMMY_1, /* For future use */ + AX25_VALUES_DUMMY_2, /* For future use */ + AX25_VALUES_DUMMY_3, /* For future use */ + AX25_VALUES_DUMMY_4, /* For future use */ + AX25_VALUES_DUMMY_5, /* For future use */ + AX25_VALUES_DUMMY_6, /* For future use */ + AX25_VALUES_DUMMY_7, /* For future use */ + AX25_MAX_VALUES /* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */ +}; + +#define AX25_DEF_IPDEFMODE 1 /* VC */ +#define AX25_DEF_AXDEFMODE 0 /* Normal */ +#define AX25_DEF_BACKOFF 1 /* Linear backoff */ +#define AX25_DEF_CONMODE 2 /* Connected mode allowed */ +#define AX25_DEF_WINDOW 7 /* Window=7 */ +#define AX25_DEF_EWINDOW 32 /* Module-128 Window=32 */ +#define AX25_DEF_T1 (10 * AX25_SLOWHZ) /* T1=10s */ +#define AX25_DEF_T2 (3 * AX25_SLOWHZ) /* T2=3s */ +#define AX25_DEF_T3 (90 * AX25_SLOWHZ) /* T3=90s */ +#define AX25_DEF_N2 10 /* N2=10 */ +#define AX25_DEF_IDLE (120 * AX25_SLOWHZ) /* Idle=120s */ +#define AX25_DEF_PACLEN 256 /* Paclen=256 */ +#define AX25_DEF_PROTOCOL 1 /* 0=CSMA; 1=CSMA/DAMA slave auto; 2=DAMA master */ +#define AX25_DEF_DAMA_SLAVE_TIMEOUT 0 /* ? */ +#define AX25_DEF_MEDIA_DUPLEX 0 /* Half duplex */ +#define AX25_DEF_MEDIA_TXDELAY 60 /* 60 ms */ +#define AX25_DEF_MEDIA_TXTAIL 10 /* 10 ms */ +#define AX25_DEF_MEDIA_TXBITRATE 9600 /* 9600 bps */ +#define AX25_DEF_MEDIA_RXBITRATE 9600 /* 9600 bps */ +#define AX25_DEF_MEDIA_SLOTTIME 10 /* 10 ms */ +#define AX25_DEF_MEDIA_PPERSISTENCE 32 /* 32/256 */ +#define AX25_DEF_MEDIA_AUTO_ADJUST 1 /* Auto adjust on */ + +struct ax25_dev { + unsigned long magic; + struct net_device *netdev; /* backlink to the network device */ + struct net_device *forward; + struct timer_list timer; + struct timer_list tics; + struct tq_struct task_queue; + struct sk_buff_head unproto_queue; + int needs_transmit; + unsigned int dama_mode; + struct { + struct ax25_cb *ready; + struct ax25_cb *all; + } list; + + struct { + unsigned char fast; /* + * set for "infinitely" + * fast channels to skip + * arbitration + */ + + /* downcalls */ + unsigned int (*dcd)(struct net_device *dev); /* required: report dcd state */ + unsigned int (*ptt)(struct net_device *dev); /* required: report ptt state */ + unsigned int (*cts)(struct net_device *dev); /* optional: report "clear to send" */ + void (*rts)(struct net_device *dev); /* optional: forced "key transmitter" */ + void (*parameter_change_notify)( /* configure media parameter */ + struct net_device *dev, + int id, /* parameter type */ + int old, /* old value */ + int new); /* new value */ + } hw; + + struct ctl_table systable[AX25_MAX_VALUES+1]; + int values[AX25_MAX_VALUES]; + + /* handled by DDI layer */ + unsigned int bit_per_jiffie; /* internal use */ + unsigned int jiffies_per_slot; /* internal use */ + unsigned char dcd_memory; /* internal use */ + unsigned char dcd_dropped; /* internal use */ + unsigned char dama_polled; /* internal use */ + unsigned int bytes_sent; + unsigned int max_bytes; + + /* statistics */ + unsigned long tx_iframes; + unsigned long rx_iframes; + unsigned long tx_bytes; + unsigned long rx_bytes; + unsigned long rx_rejects; + + rwlock_t ready_lock; +}; + +#define DAMA_SLAVE (1<<0) +#define DAMA_MASTER (1<<1) + +#define AX25_PTR(dev) ((struct ax25_dev *)dev->ax25_ptr) + +extern void register_ax25device(struct net_device *dev); +extern void unregister_ax25device(struct net_device *dev); + + +/* + * Call this function from device driver code for reading a parameter + */ +extern inline int ax25_dev_get_value(struct net_device *dev, int valueno) +{ + struct ax25_dev *ax25_device = AX25_PTR(dev); + return ax25_device->values[valueno]; +} + +/* + * Call this function from device driver code for writing a parameter + */ +extern inline void ax25_dev_set_value(struct net_device *dev, int valueno, int newvalue) +{ + struct ax25_dev *ax25_device = AX25_PTR(dev); + ax25_device->values[valueno] = newvalue; +} + +#endif /* _NET_AX25DEV_H */ |