Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 96 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/timer.h b/pfinet/linux-src/include/linux/timer.h
new file mode 100644
index 00000000..56f39893
--- /dev/null
+++ b/pfinet/linux-src/include/linux/timer.h
@@ -0,0 +1,96 @@
+#ifndef _LINUX_TIMER_H
+#define _LINUX_TIMER_H
+
+/*
+ * Old-style timers. Please don't use for any new code.
+ *
+ * Numbering of these timers should be consecutive to minimize
+ * processing delays. [MJ]
+ */
+
+#define BLANK_TIMER	0	/* Console screen-saver */
+#define BEEP_TIMER	1	/* Console beep */
+#define RS_TIMER	2	/* RS-232 ports */
+#define SWAP_TIMER	3	/* Background pageout */
+#define BACKGR_TIMER    4	/* io_request background I/O */
+#define HD_TIMER	5	/* Old IDE driver */
+#define FLOPPY_TIMER	6	/* Floppy */
+#define QIC02_TAPE_TIMER 7	/* QIC 02 tape */
+#define MCD_TIMER	8	/* Mitsumi CDROM */
+#define GSCD_TIMER	9	/* Goldstar CDROM */
+#define COMTROL_TIMER	10	/* Comtrol serial */
+#define DIGI_TIMER	11	/* Digi serial */
+#define GDTH_TIMER	12	/* Ugh - gdth scsi driver */
+
+#define COPRO_TIMER	31	/* 387 timeout for buggy hardware (boot only) */
+
+struct timer_struct {
+	unsigned long expires;
+	void (*fn)(void);
+};
+
+extern unsigned long timer_active;
+extern struct timer_struct timer_table[32];
+
+/*
+ * This is completely separate from the above, and is the
+ * "new and improved" way of handling timers more dynamically.
+ * Hopefully efficient and general enough for most things.
+ *
+ * The "hardcoded" timers above are still useful for well-
+ * defined problems, but the timer-list is probably better
+ * when you need multiple outstanding timers or similar.
+ *
+ * The "data" field is in case you want to use the same
+ * timeout function for several timeouts. You can use this
+ * to distinguish between the different invocations.
+ */
+struct timer_list {
+	struct timer_list *next; /* MUST be first element */
+	struct timer_list *prev;
+	unsigned long expires;
+	unsigned long data;
+	void (*function)(unsigned long);
+};
+
+extern void add_timer(struct timer_list * timer);
+extern int  del_timer(struct timer_list * timer);
+
+/*
+ * mod_timer is a more efficient way to update the expire field of an
+ * active timer (if the timer is inactive it will be activated)
+ * mod_timer(a,b) is equivalent to del_timer(a); a->expires = b; add_timer(a)
+ */
+void mod_timer(struct timer_list *timer, unsigned long expires);
+
+extern void it_real_fn(unsigned long);
+
+extern inline void init_timer(struct timer_list * timer)
+{
+	timer->next = NULL;
+	timer->prev = NULL;
+}
+
+extern inline int timer_pending(struct timer_list * timer)
+{
+	return timer->prev != NULL;
+}
+
+/*
+ *	These inlines deal with timer wrapping correctly. You are 
+ *	strongly encouraged to use them
+ *	1. Because people otherwise forget
+ *	2. Because if the timer wrap changes in future you wont have to
+ *	   alter your driver code.
+ *
+ * Do this with "<0" and ">=0" to only test the sign of the result. A
+ * good compiler would generate better code (and a really good compiler
+ * wouldn't care). Gcc is currently neither.
+ */
+#define time_after(a,b)		((long)(b) - (long)(a) < 0)
+#define time_before(a,b)	time_after(b,a)
+
+#define time_after_eq(a,b)	((long)(a) - (long)(b) >= 0)
+#define time_before_eq(a,b)	time_after_eq(b,a)
+
+#endif