65c8f95362
There are a mix of function prototypes with and without extern in the kernel sources. Standardize on not using extern for function prototypes. Function prototypes don't need to be written with extern. extern is assumed by the compiler. Its use is as unnecessary as using auto to declare automatic/local variables in a block. Signed-off-by: Joe Perches <joe@perches.com>
47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
#ifndef _LINUX_X25_ASY_H
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#define _LINUX_X25_ASY_H
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/* X.25 asy configuration. */
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#define SL_NRUNIT 256 /* MAX number of X.25 channels;
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This can be overridden with
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insmod -ox25_asy_maxdev=nnn */
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#define SL_MTU 256
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/* X25 async protocol characters. */
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#define X25_END 0x7E /* indicates end of frame */
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#define X25_ESC 0x7D /* indicates byte stuffing */
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#define X25_ESCAPE(x) ((x)^0x20)
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#define X25_UNESCAPE(x) ((x)^0x20)
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struct x25_asy {
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int magic;
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/* Various fields. */
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spinlock_t lock;
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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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int buffsize; /* Max buffers sizes */
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unsigned long flags; /* Flag values/ mode etc */
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#define SLF_INUSE 0 /* Channel in use */
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#define SLF_ESCAPE 1 /* ESC received */
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#define SLF_ERROR 2 /* Parity, etc. error */
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#define SLF_OUTWAIT 4 /* Waiting for output */
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};
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#define X25_ASY_MAGIC 0x5303
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int x25_asy_init(struct net_device *dev);
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#endif /* _LINUX_X25_ASY.H */
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