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From:   Horatiu Vultur <horatiu.vultur@microchip.com>
To:     <nikolay@cumulusnetworks.com>, <roopa@cumulusnetworks.com>,
        <davem@davemloft.net>, <kuba@kernel.org>, <jiri@resnulli.us>,
        <ivecera@redhat.com>, <andrew@lunn.ch>,
        <UNGLinuxDriver@microchip.com>, <netdev@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <bridge@lists.linux-foundation.org>
CC:     Horatiu Vultur <horatiu.vultur@microchip.com>
Subject: [PATCH net-next v2 06/12] bridge: mrp: Add br_mrp_in_port_open function
Date:   Thu, 9 Jul 2020 12:00:34 +0200
Message-ID: <20200709100040.554623-7-horatiu.vultur@microchip.com>
In-Reply-To: <20200709100040.554623-1-horatiu.vultur@microchip.com>
References: <20200709100040.554623-1-horatiu.vultur@microchip.com>
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This function notifies the userspace when the node lost the continuity
of MRP_InTest frames.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
 net/bridge/br_mrp_netlink.c | 22 ++++++++++++++++++++++
 net/bridge/br_private_mrp.h |  1 +
 2 files changed, 23 insertions(+)

diff --git a/net/bridge/br_mrp_netlink.c b/net/bridge/br_mrp_netlink.c
index acce300c0cc29..4bf7aaeb29152 100644
--- a/net/bridge/br_mrp_netlink.c
+++ b/net/bridge/br_mrp_netlink.c
@@ -389,3 +389,25 @@ int br_mrp_ring_port_open(struct net_device *dev, u8 loc)
 out:
 	return err;
 }
+
+int br_mrp_in_port_open(struct net_device *dev, u8 loc)
+{
+	struct net_bridge_port *p;
+	int err = 0;
+
+	p = br_port_get_rcu(dev);
+	if (!p) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	if (loc)
+		p->flags |= BR_MRP_LOST_IN_CONT;
+	else
+		p->flags &= ~BR_MRP_LOST_IN_CONT;
+
+	br_ifinfo_notify(RTM_NEWLINK, NULL, p);
+
+out:
+	return err;
+}
diff --git a/net/bridge/br_private_mrp.h b/net/bridge/br_private_mrp.h
index d5957f7e687ff..384cb69b47e02 100644
--- a/net/bridge/br_private_mrp.h
+++ b/net/bridge/br_private_mrp.h
@@ -75,5 +75,6 @@ int br_mrp_port_switchdev_set_role(struct net_bridge_port *p,
 
 /* br_mrp_netlink.c  */
 int br_mrp_ring_port_open(struct net_device *dev, u8 loc);
+int br_mrp_in_port_open(struct net_device *dev, u8 loc);
 
 #endif /* _BR_PRIVATE_MRP_H */
-- 
2.27.0