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From: Florian Fainelli <f.fainelli@gmail.com>
To: netdev@vger.kernel.org
Cc: Florian Fainelli <f.fainelli@gmail.com>,
	Andrew Lunn <andrew@lunn.ch>,
	Vivien Didelot <vivien.didelot@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>
Subject: [PATCH net-next v2 2/2] net: dsa: loop: Return VLAN table size through devlink
Date: Tue, 18 Aug 2020 21:32:18 -0700	[thread overview]
Message-ID: <20200819043218.19285-3-f.fainelli@gmail.com> (raw)
In-Reply-To: <20200819043218.19285-1-f.fainelli@gmail.com>

We return the VLAN table size through devlink as a simple parameter, we
do not support altering it at runtime:

devlink resource show mdio_bus/fixed-0:1f
mdio_bus/fixed-0:1f:
  name VTU size 4096 occ 0 unit entry dpipe_tables none

and after configure a bridge with VLAN filtering:

devlink resource show mdio_bus/fixed-0:1f
mdio_bus/fixed-0:1f:
  name VTU size 4096 occ 1 unit entry dpipe_tables none

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/dsa_loop.c | 55 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 54 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index e6fc4fec9cfc..b588614d1e5e 100644
--- a/drivers/net/dsa/dsa_loop.c
+++ b/drivers/net/dsa/dsa_loop.c
@@ -28,6 +28,53 @@ static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
 
 static struct phy_device *phydevs[PHY_MAX_ADDR];
 
+enum dsa_loop_devlink_resource_id {
+	DSA_LOOP_DEVLINK_PARAM_ID_VTU,
+};
+
+static u64 dsa_loop_devlink_vtu_get(void *priv)
+{
+	struct dsa_loop_priv *ps = priv;
+	unsigned int i, count = 0;
+	struct dsa_loop_vlan *vl;
+
+	for (i = 0; i < ARRAY_SIZE(ps->vlans); i++) {
+		vl = &ps->vlans[i];
+		if (vl->members)
+			count++;
+	}
+
+	return count;
+}
+
+static int dsa_loop_setup_devlink_resources(struct dsa_switch *ds)
+{
+	struct devlink_resource_size_params size_params;
+	struct dsa_loop_priv *ps = ds->priv;
+	int err;
+
+	devlink_resource_size_params_init(&size_params, ARRAY_SIZE(ps->vlans),
+					  ARRAY_SIZE(ps->vlans),
+					  1, DEVLINK_RESOURCE_UNIT_ENTRY);
+
+	err = dsa_devlink_resource_register(ds, "VTU", ARRAY_SIZE(ps->vlans),
+					    DSA_LOOP_DEVLINK_PARAM_ID_VTU,
+					    DEVLINK_RESOURCE_ID_PARENT_TOP,
+					    &size_params);
+	if (err)
+		goto out;
+
+	dsa_devlink_resource_occ_get_register(ds,
+					      DSA_LOOP_DEVLINK_PARAM_ID_VTU,
+					      dsa_loop_devlink_vtu_get, ps);
+
+	return 0;
+
+out:
+	dsa_devlink_resources_unregister(ds);
+	return err;
+}
+
 static enum dsa_tag_protocol dsa_loop_get_protocol(struct dsa_switch *ds,
 						   int port,
 						   enum dsa_tag_protocol mp)
@@ -48,7 +95,12 @@ static int dsa_loop_setup(struct dsa_switch *ds)
 
 	dev_dbg(ds->dev, "%s\n", __func__);
 
-	return 0;
+	return dsa_loop_setup_devlink_resources(ds);
+}
+
+static void dsa_loop_teardown(struct dsa_switch *ds)
+{
+	dsa_devlink_resources_unregister(ds);
 }
 
 static int dsa_loop_get_sset_count(struct dsa_switch *ds, int port, int sset)
@@ -243,6 +295,7 @@ static int dsa_loop_port_max_mtu(struct dsa_switch *ds, int port)
 static const struct dsa_switch_ops dsa_loop_driver = {
 	.get_tag_protocol	= dsa_loop_get_protocol,
 	.setup			= dsa_loop_setup,
+	.teardown		= dsa_loop_teardown,
 	.get_strings		= dsa_loop_get_strings,
 	.get_ethtool_stats	= dsa_loop_get_ethtool_stats,
 	.get_sset_count		= dsa_loop_get_sset_count,
-- 
2.25.1


  parent reply	other threads:[~2020-08-19  4:32 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-19  4:32 [PATCH net-next v2 0/2] net: dsa: loop: Expose VLAN table " Florian Fainelli
2020-08-19  4:32 ` [PATCH net-next v2 1/2] net: dsa: loop: Configure VLANs while not filtering Florian Fainelli
2020-08-19 13:16   ` Andrew Lunn
2020-08-19  4:32 ` Florian Fainelli [this message]
2020-08-19 13:15   ` [PATCH net-next v2 2/2] net: dsa: loop: Return VLAN table size through devlink Andrew Lunn
2020-08-19 19:01 ` [PATCH net-next v2 0/2] net: dsa: loop: Expose VLAN table " David Miller

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