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#ifndef _LINUX_X25_ASY_H #define _LINUX_X25_ASY_H /* X.25 asy configuration. */ #define SL_NRUNIT 256 /* MAX number of X.25 channels; This can be overridden with insmod -ox25_asy_maxdev=nnn */ #define SL_MTU 256 /* X25 async protocol characters. */ #define X25_END 0x7E /* indicates end of frame */ #define X25_ESC 0x7D /* indicates byte stuffing */ #define X25_ESCAPE(x) ((x)^0x20) #define X25_UNESCAPE(x) ((x)^0x20) struct x25_asy { int magic; /* Various fields. */ struct tty_struct *tty; /* ptr to TTY structure */ struct net_device *dev; /* easy for intr handling */ /* These are pointers to the malloc()ed frame buffers. */ unsigned char *rbuff; /* receiver buffer */ int rcount; /* received chars counter */ unsigned char *xbuff; /* transmitter buffer */ unsigned char *xhead; /* pointer to next byte to XMIT */ int xleft; /* bytes left in XMIT queue */ /* X.25 interface statistics. */ unsigned long rx_packets; /* inbound frames counter */ unsigned long tx_packets; /* outbound frames counter */ unsigned long rx_bytes; /* inbound byte counte */ unsigned long tx_bytes; /* outbound byte counter */ unsigned long rx_errors; /* Parity, etc. errors */ unsigned long tx_errors; /* Planned stuff */ unsigned long rx_dropped; /* No memory for skb */ unsigned long tx_dropped; /* When MTU change */ unsigned long rx_over_errors; /* Frame bigger then X.25 buf. */ int mtu; /* Our mtu (to spot changes!) */ int buffsize; /* Max buffers sizes */ unsigned long flags; /* Flag values/ mode etc */ #define SLF_INUSE 0 /* Channel in use */ #define SLF_ESCAPE 1 /* ESC received */ #define SLF_ERROR 2 /* Parity, etc. error */ #define SLF_OUTWAIT 4 /* Waiting for output */ }; #define X25_ASY_MAGIC 0x5303 extern int x25_asy_init(struct net_device *dev); #endif /* _LINUX_X25_ASY.H */ |