linux-kernel - [RFC net-next v3 07/10] net: bridge: mrp: switchdev: Implement MRP API for switchdev

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Date:   Fri, 24 Jan 2020 17:18:25 +0100
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <bridge@...ts.linux-foundation.org>, <jiri@...nulli.us>,
        <ivecera@...hat.com>, <davem@...emloft.net>,
        <roopa@...ulusnetworks.com>, <nikolay@...ulusnetworks.com>,
        <anirudh.venkataramanan@...el.com>, <olteanv@...il.com>,
        <andrew@...n.ch>, <jeffrey.t.kirsher@...el.com>,
        <UNGLinuxDriver@...rochip.com>
CC:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [RFC net-next v3 07/10] net: bridge: mrp: switchdev: Implement MRP API for switchdev

Implement the MRP api for switchdev.
These functions will just eventually call the switchdev functions:
switchdev_port_obj_add/del and switchdev_port_attr_set.

Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
---
 net/bridge/br_mrp_switchdev.c | 147 ++++++++++++++++++++++++++++++++++
 1 file changed, 147 insertions(+)
 create mode 100644 net/bridge/br_mrp_switchdev.c

diff --git a/net/bridge/br_mrp_switchdev.c b/net/bridge/br_mrp_switchdev.c
new file mode 100644
index 000000000000..2226d98806de
--- /dev/null
+++ b/net/bridge/br_mrp_switchdev.c
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <net/switchdev.h>
+
+#include "br_private_mrp.h"
+
+int br_mrp_port_switchdev_add(struct net_bridge_port *p, u32 ring_nr)
+{
+	struct net_bridge *br = p->br;
+	struct switchdev_obj_port_mrp mrp = {
+		.obj.orig_dev = br->dev,
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_MRP,
+		.port = p->dev,
+		.ring_nr = ring_nr,
+	};
+	int err = 0;
+
+	err = switchdev_port_obj_add(br->dev, &mrp.obj, NULL);
+
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	return 0;
+}
+
+int br_mrp_switchdev_set_ring_role(struct br_mrp *mrp,
+				   enum br_mrp_ring_role_type role)
+{
+	struct switchdev_obj_ring_role_mrp mrp_role = {
+		.obj.orig_dev = mrp->br->dev,
+		.obj.id = SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
+		.ring_role = role,
+		.ring_nr = mrp->ring_nr,
+	};
+	int err = 0;
+
+	pr_info("%s role: %d\n", __func__, role);
+
+	if (role == BR_MRP_RING_ROLE_DISABLED)
+		err = switchdev_port_obj_del(mrp->br->dev, &mrp_role.obj);
+	else
+		err = switchdev_port_obj_add(mrp->br->dev, &mrp_role.obj, NULL);
+
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	return 0;
+}
+
+int br_mrp_switchdev_send_ring_test(struct br_mrp *mrp, u32 interval,
+				    u8 max_miss)
+{
+	struct switchdev_obj_ring_test_mrp test = {
+		.obj.orig_dev = mrp->br->dev,
+		.obj.id = SWITCHDEV_OBJ_ID_RING_TEST_MRP,
+		.interval = interval,
+		.max_miss = max_miss,
+		.ring_nr = mrp->ring_nr,
+	};
+	int err = 0;
+
+	if (interval == 0)
+		err = switchdev_port_obj_del(mrp->br->dev, &test.obj);
+	else
+		err = switchdev_port_obj_add(mrp->br->dev, &test.obj, NULL);
+
+	return err;
+}
+
+int br_mrp_port_switchdev_del(struct net_bridge_port *p, u32 ring_nr)
+{
+	struct net_bridge *br = p->br;
+	struct switchdev_obj_port_mrp mrp = {
+		.obj.orig_dev = br->dev,
+		.obj.id = SWITCHDEV_OBJ_ID_PORT_MRP,
+		.port = p->dev,
+		.ring_nr = ring_nr,
+	};
+	int err = 0;
+
+	err = switchdev_port_obj_del(br->dev, &mrp.obj);
+
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	return 0;
+}
+
+int br_mrp_port_switchdev_set_state(struct net_bridge_port *p,
+				    enum br_mrp_port_state_type state)
+{
+	struct switchdev_attr attr = {
+		.orig_dev = p->dev,
+		.id = SWITCHDEV_ATTR_ID_MRP_PORT_STATE,
+		.u.mrp_port_state = state,
+	};
+	int err = 0;
+
+	pr_info("%s port: %s, state: %d\n", __func__, p->dev->name, state);
+
+	err = switchdev_port_attr_set(p->dev, &attr);
+	if (err && err != -EOPNOTSUPP)
+		br_warn(p->br, "error setting offload MRP state on port %u(%s)\n",
+			(unsigned int)p->port_no, p->dev->name);
+
+	return err;
+}
+
+int br_mrp_port_switchdev_set_role(struct net_bridge_port *p,
+				   enum br_mrp_port_role_type role)
+{
+	struct switchdev_attr attr = {
+		.orig_dev = p->dev,
+		.id = SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
+		.u.mrp_port_role = role,
+	};
+	int err;
+
+	err = switchdev_port_attr_set(p->dev, &attr);
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	return 0;
+}
+
+int br_mrp_switchdev_set_ring_state(struct br_mrp *mrp,
+				    enum br_mrp_ring_state_type state)
+{
+	struct switchdev_attr attr = {
+		.id = SWITCHDEV_ATTR_ID_MRP_RING_STATE,
+		.u.mrp_ring_state = state,
+	};
+	int err = 0;
+
+	attr.orig_dev = mrp->p_port->dev,
+	err = switchdev_port_attr_set(mrp->p_port->dev, &attr);
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	attr.orig_dev = mrp->s_port->dev;
+	err = switchdev_port_attr_set(mrp->s_port->dev, &attr);
+	if (err && err != -EOPNOTSUPP)
+		return err;
+
+	return err;
+}
+
-- 
2.17.1