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From:   Horatiu Vultur <horatiu.vultur@microchip.com>
To:     <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>,
        <bridge@lists.linux-foundation.org>, <jiri@resnulli.us>,
        <ivecera@redhat.com>, <davem@davemloft.net>,
        <roopa@cumulusnetworks.com>, <nikolay@cumulusnetworks.com>,
        <anirudh.venkataramanan@intel.com>, <olteanv@gmail.com>,
        <andrew@lunn.ch>, <jeffrey.t.kirsher@intel.com>,
        <UNGLinuxDriver@microchip.com>
CC:     Horatiu Vultur <horatiu.vultur@microchip.com>
Subject: [RFC net-next v3 06/10] net: bridge: mrp: switchdev: Extend switchdev API to offload MRP
Date:   Fri, 24 Jan 2020 17:18:24 +0100
Message-ID: <20200124161828.12206-7-horatiu.vultur@microchip.com>
In-Reply-To: <20200124161828.12206-1-horatiu.vultur@microchip.com>
References: <20200124161828.12206-1-horatiu.vultur@microchip.com>
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Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Extend switchdev API to add support for MRP. The HW is notified in
following cases:

SWITCHDEV_OBJ_ID_PORT_MRP: This is used when a port is added/removed from the
  mrp ring.

SWITCHDEV_OBJ_ID_RING_ROLE_MRP: This is used when the role of the node
  changes. The current supported roles are Media Redundancy Manager and Media
  Redundancy Client.

SWITCHDEV_OBJ_ID_RING_TEST_MRP: This is used when to start/stop sending
  MRP_Test frames on the mrp ring ports. This is called only on nodes that have
  the role Media Redundancy Manager.

SWITCHDEV_ATTR_ID_MRP_PORT_STATE: This is used when the port's state is
  changed. It can be in blocking/forwarding mode.

SWITCHDEV_ATTR_ID_MRP_PORT_ROLE: This is used when port's role changes. The
  roles of the port can be primary/secondary. This is required to notify HW
  because the MRP_Test frame contains the field MRP_PortRole that contains this
  information.

SWITCHDEV_ATTR_ID_MRP_RING_STATE: This is used when the ring changes it states
  to open or closed. This is required to notify HW because the MRP_Test frame
  contains the field MRP_InState which contains this information.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
 include/net/switchdev.h | 51 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index aee86a189432..b1ed170fc01d 100644
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -40,6 +40,11 @@ enum switchdev_attr_id {
 	SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
 	SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
 	SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
+#ifdef CONFIG_BRIDGE_MRP
+	SWITCHDEV_ATTR_ID_MRP_PORT_STATE,
+	SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
+	SWITCHDEV_ATTR_ID_MRP_RING_STATE,
+#endif
 };
 
 struct switchdev_attr {
@@ -55,6 +60,11 @@ struct switchdev_attr {
 		clock_t ageing_time;			/* BRIDGE_AGEING_TIME */
 		bool vlan_filtering;			/* BRIDGE_VLAN_FILTERING */
 		bool mc_disabled;			/* MC_DISABLED */
+#ifdef CONFIG_BRIDGE_MRP
+		u8 mrp_port_state;			/* MRP_PORT_STATE */
+		u8 mrp_port_role;			/* MRP_PORT_ROLE */
+		u8 mrp_ring_state;			/* MRP_RING_STATE */
+#endif
 	} u;
 };
 
@@ -63,6 +73,11 @@ enum switchdev_obj_id {
 	SWITCHDEV_OBJ_ID_PORT_VLAN,
 	SWITCHDEV_OBJ_ID_PORT_MDB,
 	SWITCHDEV_OBJ_ID_HOST_MDB,
+#ifdef CONFIG_BRIDGE_MRP
+	SWITCHDEV_OBJ_ID_PORT_MRP,
+	SWITCHDEV_OBJ_ID_RING_TEST_MRP,
+	SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
+#endif
 };
 
 struct switchdev_obj {
@@ -94,6 +109,42 @@ struct switchdev_obj_port_mdb {
 #define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
 	container_of((OBJ), struct switchdev_obj_port_mdb, obj)
 
+
+#ifdef CONFIG_BRIDGE_MRP
+/* SWITCHDEV_OBJ_ID_PORT_MRP */
+struct switchdev_obj_port_mrp {
+	struct switchdev_obj obj;
+	struct net_device *port;
+	u32 ring_nr;
+};
+
+#define SWITCHDEV_OBJ_PORT_MRP(OBJ) \
+	container_of((OBJ), struct switchdev_obj_port_mrp, obj)
+
+/* SWITCHDEV_OBJ_ID_RING_TEST_MRP */
+struct switchdev_obj_ring_test_mrp {
+	struct switchdev_obj obj;
+	/* The value is in us and a value of 0 represents to stop */
+	u32 interval;
+	u8 max_miss;
+	u32 ring_nr;
+};
+
+#define SWITCHDEV_OBJ_RING_TEST_MRP(OBJ) \
+	container_of((OBJ), struct switchdev_obj_ring_test_mrp, obj)
+
+/* SWICHDEV_OBJ_ID_RING_ROLE_MRP */
+struct switchdev_obj_ring_role_mrp {
+	struct switchdev_obj obj;
+	u8 ring_role;
+	u32 ring_nr;
+};
+
+#define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \
+	container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj)
+
+#endif
+
 typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
 
 enum switchdev_notifier_type {
-- 
2.17.1