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Subject[RFC net-next v4 5/9] switchdev: mrp: Extend switchdev API to offload MRP
Date
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_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 | 53 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)

diff --git a/include/net/switchdev.h b/include/net/switchdev.h
index aee86a189432..3323779122c7 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,
+#if IS_ENABLED(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 */
+#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 +73,11 @@ 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,
+#endif
};

struct switchdev_obj {
@@ -94,6 +109,44 @@ 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)
+
+#endif
+
typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);

enum switchdev_notifier_type {
--
2.17.1
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