63 lines
2.6 KiB
C
63 lines
2.6 KiB
C
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/****************************************************************************
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* Defines for the Multi-KISS driver.
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****************************************************************************/
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#define AX25_MAXDEV 16 /* MAX number of AX25 channels;
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This can be overridden with
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insmod -oax25_maxdev=nnn */
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#define AX_MTU 236
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/* SLIP/KISS protocol characters. */
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#define END 0300 /* indicates end of frame */
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#define ESC 0333 /* indicates byte stuffing */
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#define ESC_END 0334 /* ESC ESC_END means END 'data' */
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#define ESC_ESC 0335 /* ESC ESC_ESC means ESC 'data' */
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struct ax_disp {
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int magic;
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/* Various fields. */
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struct tty_struct *tty; /* ptr to TTY structure */
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struct net_device *dev; /* easy for intr handling */
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/* These are pointers to the malloc()ed frame buffers. */
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unsigned char *rbuff; /* receiver buffer */
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int rcount; /* received chars counter */
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unsigned char *xbuff; /* transmitter buffer */
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unsigned char *xhead; /* pointer to next byte to XMIT */
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int xleft; /* bytes left in XMIT queue */
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/* SLIP interface statistics. */
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unsigned long rx_packets; /* inbound frames counter */
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unsigned long tx_packets; /* outbound frames counter */
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unsigned long rx_bytes; /* inbound bytes counter */
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unsigned long tx_bytes; /* outbound bytes counter */
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unsigned long rx_errors; /* Parity, etc. errors */
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unsigned long tx_errors; /* Planned stuff */
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unsigned long rx_dropped; /* No memory for skb */
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unsigned long tx_dropped; /* When MTU change */
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unsigned long rx_over_errors; /* Frame bigger then SLIP buf. */
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/* Detailed SLIP statistics. */
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int mtu; /* Our mtu (to spot changes!) */
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int buffsize; /* Max buffers sizes */
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unsigned long flags; /* Flag values/ mode etc */
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/* long req'd: used by set_bit --RR */
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#define AXF_INUSE 0 /* Channel in use */
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#define AXF_ESCAPE 1 /* ESC received */
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#define AXF_ERROR 2 /* Parity, etc. error */
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#define AXF_KEEPTEST 3 /* Keepalive test flag */
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#define AXF_OUTWAIT 4 /* is outpacket was flag */
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int mode;
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int crcmode; /* MW: for FlexNet, SMACK etc. */
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#define CRC_MODE_NONE 0
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#define CRC_MODE_FLEX 1
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#define CRC_MODE_SMACK 2
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spinlock_t buflock; /* lock for rbuf and xbuf */
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};
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#define AX25_MAGIC 0x5316
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