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Diffstat (limited to 'snull/snull.h')
| -rw-r--r-- | snull/snull.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/snull/snull.h b/snull/snull.h new file mode 100644 index 0000000..69a49a0 --- /dev/null +++ b/snull/snull.h @@ -0,0 +1,49 @@ + +/* + * snull.h -- definitions for the network module + * + * Copyright (C) 2001 Alessandro Rubini and Jonathan Corbet + * Copyright (C) 2001 O'Reilly & Associates + * + * The source code in this file can be freely used, adapted, + * and redistributed in source or binary form, so long as an + * acknowledgment appears in derived source files. The citation + * should list that the code comes from the book "Linux Device + * Drivers" by Alessandro Rubini and Jonathan Corbet, published + * by O'Reilly & Associates. No warranty is attached; + * we cannot take responsibility for errors or fitness for use. + */ + +/* + * Macros to help debugging + */ + +#undef PDEBUG /* undef it, just in case */ +#ifdef SNULL_DEBUG +# ifdef __KERNEL__ + /* This one if debugging is on, and kernel space */ +# define PDEBUG(fmt, args...) printk( KERN_DEBUG "snull: " fmt, ## args) +# else + /* This one for user space */ +# define PDEBUG(fmt, args...) fprintf(stderr, fmt, ## args) +# endif +#else +# define PDEBUG(fmt, args...) /* not debugging: nothing */ +#endif + +#undef PDEBUGG +#define PDEBUGG(fmt, args...) /* nothing: it's a placeholder */ + + +/* These are the flags in the statusword */ +#define SNULL_RX_INTR 0x0001 +#define SNULL_TX_INTR 0x0002 + +/* Default timeout period */ +#define SNULL_TIMEOUT 5 /* In jiffies */ + +extern struct net_device *snull_devs[]; + + + + |