switchdev: mrp: Extend switchdev API to offload MRP

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

SWITCHDEV_OBJ_ID_MRP: This is used when a MRP instance 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 MRM and MRC.

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 MRM. In case this fails then the SW will generate the frames.

SWITCHDEV_OBJ_ID_RING_STATE_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.

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.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index aee86a1..ae7aeb0 100644 (file)
--- a/include/net/switchdev.h
+++ b/include/net/switchdev.h
@@ -40,6 +40,10 @@ enum switchdev_attr_id {
        SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
        SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
        SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
+#if IS_ENABLED(CONFIG_BRIDGE_MRP)
+       SWITCHDEV_ATTR_ID_MRP_PORT_STATE,
+       SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
+#endif
 };
 
 struct switchdev_attr {
@@ -55,6 +59,11 @@ struct switchdev_attr {
                clock_t ageing_time;                    /* BRIDGE_AGEING_TIME */
                bool vlan_filtering;                    /* BRIDGE_VLAN_FILTERING */
                bool mc_disabled;                       /* MC_DISABLED */
+#if IS_ENABLED(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 +72,12 @@ enum switchdev_obj_id {
        SWITCHDEV_OBJ_ID_PORT_VLAN,
        SWITCHDEV_OBJ_ID_PORT_MDB,
        SWITCHDEV_OBJ_ID_HOST_MDB,
+#if IS_ENABLED(CONFIG_BRIDGE_MRP)
+       SWITCHDEV_OBJ_ID_MRP,
+       SWITCHDEV_OBJ_ID_RING_TEST_MRP,
+       SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
+       SWITCHDEV_OBJ_ID_RING_STATE_MRP,
+#endif
 };
 
 struct switchdev_obj {
@@ -94,6 +109,53 @@ struct switchdev_obj_port_mdb {
 #define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
        container_of((OBJ), struct switchdev_obj_port_mdb, obj)
 
+
+#if IS_ENABLED(CONFIG_BRIDGE_MRP)
+/* SWITCHDEV_OBJ_ID_MRP */
+struct switchdev_obj_mrp {
+       struct switchdev_obj obj;
+       struct net_device *p_port;
+       struct net_device *s_port;
+       u32 ring_id;
+};
+
+#define SWITCHDEV_OBJ_MRP(OBJ) \
+       container_of((OBJ), struct switchdev_obj_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_id;
+       u32 period;
+};
+
+#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_id;
+};
+
+#define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \
+       container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj)
+
+struct switchdev_obj_ring_state_mrp {
+       struct switchdev_obj obj;
+       u8 ring_state;
+       u32 ring_id;
+};
+
+#define SWITCHDEV_OBJ_RING_STATE_MRP(OBJ) \
+       container_of((OBJ), struct switchdev_obj_ring_state_mrp, obj)
+
+#endif
+
 typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
 
 enum switchdev_notifier_type {