[PATCH 12/18] header: add hrtimer_forward() and ns_to_ktime()

ktime_t was converted from the union to s64 in kernel 4.10.
hrtimer_start() was already converted some time ago in backports, now
mac80211_hwsim uses hrtimer_start() together with the newly added
functions.

Signed-off-by: Hauke Mehrtens <[email protected]>
---
 backport/backport-include/linux/interrupt.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/backport/backport-include/linux/interrupt.h b/backport/backport-include/linux/interrupt.h
index ad3cbf66..f7e7134d 100644
--- a/backport/backport-include/linux/interrupt.h
+++ b/backport/backport-include/linux/interrupt.h
@@ -5,6 +5,25 @@
 #include <linux/ktime.h>
 
 #if LINUX_VERSION_IS_LESS(4,10,0)
+
+/* Forward a hrtimer so it expires after now: */
+static inline u64
+backport_hrtimer_forward(struct hrtimer *timer, ktime_t now, s64 interval)
+{
+	ktime_t _interval = { .tv64 = interval };
+
+	return hrtimer_forward(timer, now, _interval);
+}
+#define hrtimer_forward LINUX_BACKPORT(hrtimer_forward)
+
+static inline s64 backport_ns_to_ktime(u64 ns)
+{
+	ktime_t _time = ns_to_ktime(ns);
+
+	return _time.tv64;
+}
+#define ns_to_ktime LINUX_BACKPORT(ns_to_ktime)
+
 static inline void backport_hrtimer_start(struct hrtimer *timer, s64 time,
 					  const enum hrtimer_mode mode)
 {
-- 
2.20.1

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