[PATCH v2 net-next 1/3] ptp_mock: Expose ptp_clock_info to external drivers

[Maciek Machnikowski <maciek@machnikowski.net>]

Allow exposing the ptp_clock_info of the ptp_mock to the external drivers.
Convert spinlocks to SLBH to allow gettime to be called from the netdevsim.
This is a prerequisite for implementing ptp support on netdevsim.

Co-developed-by: Milena Olech <milena.olech@intel.com>
Signed-off-by: Milena Olech <milena.olech@intel.com>
Signed-off-by: Maciek Machnikowski <maciek@machnikowski.net>
---
 drivers/ptp/ptp_mock.c   | 22 ++++++++++++++--------
 include/linux/ptp_mock.h |  5 +++++
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/drivers/ptp/ptp_mock.c b/drivers/ptp/ptp_mock.c
index bbd14ce24..84cfee4aa 100644
--- a/drivers/ptp/ptp_mock.c
+++ b/drivers/ptp/ptp_mock.c
@@ -54,10 +54,10 @@ static int mock_phc_adjfine(struct ptp_clock_info *info, long scaled_ppm)
 	adj = (s64)scaled_ppm << MOCK_PHC_FADJ_SHIFT;
 	adj = div_s64(adj, MOCK_PHC_FADJ_DENOMINATOR);
 
-	spin_lock(&phc->lock);
+	spin_lock_bh(&phc->lock);
 	timecounter_read(&phc->tc);
 	phc->cc.mult = MOCK_PHC_CC_MULT + adj;
-	spin_unlock(&phc->lock);
+	spin_unlock_bh(&phc->lock);
 
 	return 0;
 }
@@ -66,9 +66,9 @@ static int mock_phc_adjtime(struct ptp_clock_info *info, s64 delta)
 {
 	struct mock_phc *phc = info_to_phc(info);
 
-	spin_lock(&phc->lock);
+	spin_lock_bh(&phc->lock);
 	timecounter_adjtime(&phc->tc, delta);
-	spin_unlock(&phc->lock);
+	spin_unlock_bh(&phc->lock);
 
 	return 0;
 }
@@ -79,9 +79,9 @@ static int mock_phc_settime64(struct ptp_clock_info *info,
 	struct mock_phc *phc = info_to_phc(info);
 	u64 ns = timespec64_to_ns(ts);
 
-	spin_lock(&phc->lock);
+	spin_lock_bh(&phc->lock);
 	timecounter_init(&phc->tc, &phc->cc, ns);
-	spin_unlock(&phc->lock);
+	spin_unlock_bh(&phc->lock);
 
 	return 0;
 }
@@ -91,9 +91,9 @@ static int mock_phc_gettime64(struct ptp_clock_info *info, struct timespec64 *ts
 	struct mock_phc *phc = info_to_phc(info);
 	u64 ns;
 
-	spin_lock(&phc->lock);
+	spin_lock_bh(&phc->lock);
 	ns = timecounter_read(&phc->tc);
-	spin_unlock(&phc->lock);
+	spin_unlock_bh(&phc->lock);
 
 	*ts = ns_to_timespec64(ns);
 
@@ -171,5 +171,11 @@ void mock_phc_destroy(struct mock_phc *phc)
 }
 EXPORT_SYMBOL_GPL(mock_phc_destroy);
 
+struct ptp_clock_info *mock_phc_get_ptp_info(struct mock_phc *phc)
+{
+	return &phc->info;
+}
+EXPORT_SYMBOL_GPL(mock_phc_get_ptp_info);
+
 MODULE_DESCRIPTION("Mock-up PTP Hardware Clock driver");
 MODULE_LICENSE("GPL");
diff --git a/include/linux/ptp_mock.h b/include/linux/ptp_mock.h
index 72eb40103..e33188dec 100644
--- a/include/linux/ptp_mock.h
+++ b/include/linux/ptp_mock.h
@@ -16,6 +16,7 @@ struct mock_phc;
 struct mock_phc *mock_phc_create(struct device *dev);
 void mock_phc_destroy(struct mock_phc *phc);
 int mock_phc_index(struct mock_phc *phc);
+struct ptp_clock_info *mock_phc_get_ptp_info(struct mock_phc *phc);
 
 #else
 
@@ -33,6 +34,10 @@ static inline int mock_phc_index(struct mock_phc *phc)
 	return -1;
 }
 
+static inline struct ptp_clock_info *mock_phc_get_ptp_info(struct mock_phc *phc)
+{
+	return NULL;
+}
 #endif
 
 #endif /* _PTP_MOCK_H_ */
-- 
2.53.0