From 31f89b03036f14d113e989184ee3698689b4f5b9 Mon Sep 17 00:00:00 2001
From: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Date: Thu, 9 Aug 2018 16:08:27 +0300
Subject: [PATCH] net: eth: Add start and stop L2 functions

If the driver has created start() and stop() functions, then those
are called when ethernet L2 is enabled or disabled.

Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
---
 include/net/ethernet.h            |  6 ++++++
 subsys/net/l2/ethernet/ethernet.c | 11 +++++++++++
 2 files changed, 17 insertions(+)

diff --git a/include/net/ethernet.h b/include/net/ethernet.h
index 750c432a301..a007b5ecbf6 100644
--- a/include/net/ethernet.h
+++ b/include/net/ethernet.h
@@ -185,6 +185,12 @@ struct ethernet_api {
 	struct net_stats_eth *(*get_stats)(struct device *dev);
 #endif
 
+	/** Start the device */
+	int (*start)(struct device *dev);
+
+	/** Stop the device */
+	int (*stop)(struct device *dev);
+
 	/** Get the device capabilities */
 	enum ethernet_hw_caps (*get_capabilities)(struct device *dev);
 
diff --git a/subsys/net/l2/ethernet/ethernet.c b/subsys/net/l2/ethernet/ethernet.c
index b24fda41af3..b4815d2a5fb 100644
--- a/subsys/net/l2/ethernet/ethernet.c
+++ b/subsys/net/l2/ethernet/ethernet.c
@@ -576,8 +576,19 @@ static inline u16_t ethernet_reserve(struct net_if *iface, void *unused)
 
 static inline int ethernet_enable(struct net_if *iface, bool state)
 {
+	const struct ethernet_api *eth =
+		net_if_get_device(iface)->driver_api;
+
 	if (!state) {
 		net_arp_clear_cache(iface);
+
+		if (eth->stop) {
+			eth->stop(net_if_get_device(iface));
+		}
+	} else {
+		if (eth->start) {
+			eth->start(net_if_get_device(iface));
+		}
 	}
 
 	return 0;