netdev - [PATCH net-next 1/6] net: marvell: prestera: add virtual router ABI

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Date:   Fri, 17 Dec 2021 21:54:33 +0200
From:   Yevhen Orlov <yevhen.orlov@...ision.eu>
To:     netdev@...r.kernel.org
Cc:     Volodymyr Mytnyk <volodymyr.mytnyk@...ision.eu>,
        Taras Chornyi <taras.chornyi@...ision.eu>,
        Mickey Rachamim <mickeyr@...vell.com>,
        Serhiy Pshyk <serhiy.pshyk@...ision.eu>,
        Yevhen Orlov <yevhen.orlov@...ision.eu>,
        Taras Chornyi <tchornyi@...vell.com>,
        Oleksandr Mazur <oleksandr.mazur@...ision.eu>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 1/6] net: marvell: prestera: add virtual router ABI

Add functions and structures to allocate virtual router.
prestera_hw_vr_create() return index of allocated VR so that we can move
forward and also add another objects (e.g. router interface),
which has link to VR.

Co-developed-by: Taras Chornyi <tchornyi@...vell.com>
Signed-off-by: Taras Chornyi <tchornyi@...vell.com>
Co-developed-by: Oleksandr Mazur <oleksandr.mazur@...ision.eu>
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@...ision.eu>
Signed-off-by: Yevhen Orlov <yevhen.orlov@...ision.eu>
---
 .../ethernet/marvell/prestera/prestera_hw.c   | 42 +++++++++++++++++++
 .../ethernet/marvell/prestera/prestera_hw.h   |  4 ++
 2 files changed, 46 insertions(+)

diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.c b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
index 6282c9822e2b..8783adbad593 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.c
@@ -53,6 +53,9 @@ enum prestera_cmd_type_t {
 	PRESTERA_CMD_TYPE_VTCAM_IFACE_BIND = 0x560,
 	PRESTERA_CMD_TYPE_VTCAM_IFACE_UNBIND = 0x561,
 
+	PRESTERA_CMD_TYPE_ROUTER_VR_CREATE = 0x630,
+	PRESTERA_CMD_TYPE_ROUTER_VR_DELETE = 0x631,
+
 	PRESTERA_CMD_TYPE_RXTX_INIT = 0x800,
 
 	PRESTERA_CMD_TYPE_LAG_MEMBER_ADD = 0x900,
@@ -480,6 +483,18 @@ struct prestera_msg_rxtx_resp {
 	__le32 map_addr;
 };
 
+struct prestera_msg_vr_req {
+	struct prestera_msg_cmd cmd;
+	__le16 vr_id;
+	u8 __pad[2];
+};
+
+struct prestera_msg_vr_resp {
+	struct prestera_msg_ret ret;
+	__le16 vr_id;
+	u8 __pad[2];
+};
+
 struct prestera_msg_lag_req {
 	struct prestera_msg_cmd cmd;
 	__le32 port;
@@ -549,6 +564,7 @@ static void prestera_hw_build_tests(void)
 	BUILD_BUG_ON(sizeof(struct prestera_msg_acl_action) != 32);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_counter_req) != 16);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_counter_stats) != 16);
+	BUILD_BUG_ON(sizeof(struct prestera_msg_vr_req) != 8);
 
 	/* check responses */
 	BUILD_BUG_ON(sizeof(struct prestera_msg_common_resp) != 8);
@@ -561,6 +577,7 @@ static void prestera_hw_build_tests(void)
 	BUILD_BUG_ON(sizeof(struct prestera_msg_rxtx_resp) != 12);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_vtcam_resp) != 16);
 	BUILD_BUG_ON(sizeof(struct prestera_msg_counter_resp) != 24);
+	BUILD_BUG_ON(sizeof(struct prestera_msg_vr_resp) != 12);
 
 	/* check events */
 	BUILD_BUG_ON(sizeof(struct prestera_msg_event_port) != 20);
@@ -1752,6 +1769,31 @@ int prestera_hw_bridge_port_delete(struct prestera_port *port, u16 bridge_id)
 			    &req.cmd, sizeof(req));
 }
 
+int prestera_hw_vr_create(struct prestera_switch *sw, u16 *vr_id)
+{
+	int err;
+	struct prestera_msg_vr_resp resp;
+	struct prestera_msg_vr_req req;
+
+	err = prestera_cmd_ret(sw, PRESTERA_CMD_TYPE_ROUTER_VR_CREATE,
+			       &req.cmd, sizeof(req), &resp.ret, sizeof(resp));
+	if (err)
+		return err;
+
+	*vr_id = __le16_to_cpu(resp.vr_id);
+	return err;
+}
+
+int prestera_hw_vr_delete(struct prestera_switch *sw, u16 vr_id)
+{
+	struct prestera_msg_vr_req req = {
+		.vr_id = __cpu_to_le16(vr_id),
+	};
+
+	return prestera_cmd(sw, PRESTERA_CMD_TYPE_ROUTER_VR_DELETE, &req.cmd,
+			    sizeof(req));
+}
+
 int prestera_hw_rxtx_init(struct prestera_switch *sw,
 			  struct prestera_rxtx_params *params)
 {
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_hw.h b/drivers/net/ethernet/marvell/prestera/prestera_hw.h
index 0496e454e148..6d9fafad451d 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_hw.h
+++ b/drivers/net/ethernet/marvell/prestera/prestera_hw.h
@@ -238,6 +238,10 @@ int prestera_hw_span_bind(const struct prestera_port *port, u8 span_id);
 int prestera_hw_span_unbind(const struct prestera_port *port);
 int prestera_hw_span_release(struct prestera_switch *sw, u8 span_id);
 
+/* Virtual Router API */
+int prestera_hw_vr_create(struct prestera_switch *sw, u16 *vr_id);
+int prestera_hw_vr_delete(struct prestera_switch *sw, u16 vr_id);
+
 /* Event handlers */
 int prestera_hw_event_handler_register(struct prestera_switch *sw,
 				       enum prestera_event_type type,
-- 
2.17.1