netdev - [PATCH net-next] net: dsa: sja1105: stop using priv->vlan

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Date:   Wed, 22 Sep 2021 17:44:01 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     netdev@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next] net: dsa: sja1105: stop using priv->vlan_aware

Now that the sja1105 driver is finally sane enough again to stop having
a ternary VLAN awareness state, we can remove priv->vlan_aware and query
DSA for the ds->vlan_filtering value (for SJA1105, VLAN filtering is a
global property).

Also drop the paranoid checking that DSA calls ->port_vlan_filtering
multiple times without the VLAN awareness state changing. It doesn't,
the same check is present inside dsa_port_vlan_filtering too.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/dsa/sja1105/sja1105.h      |  1 -
 drivers/net/dsa/sja1105/sja1105_main.c |  9 ++-------
 drivers/net/dsa/sja1105/sja1105_vl.c   | 13 +++++++++----
 3 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/drivers/net/dsa/sja1105/sja1105.h b/drivers/net/dsa/sja1105/sja1105.h
index 5e5d24e7c02b..b83a5114348c 100644
--- a/drivers/net/dsa/sja1105/sja1105.h
+++ b/drivers/net/dsa/sja1105/sja1105.h
@@ -226,7 +226,6 @@ struct sja1105_private {
 	bool rgmii_tx_delay[SJA1105_MAX_NUM_PORTS];
 	phy_interface_t phy_mode[SJA1105_MAX_NUM_PORTS];
 	bool fixed_link[SJA1105_MAX_NUM_PORTS];
-	bool vlan_aware;
 	unsigned long ucast_egress_floods;
 	unsigned long bcast_egress_floods;
 	const struct sja1105_info *info;
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 181d814bd4e7..4d2114449cd6 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -1802,7 +1802,7 @@ static int sja1105_fdb_dump(struct dsa_switch *ds, int port,
 		u64_to_ether_addr(l2_lookup.macaddr, macaddr);
 
 		/* We need to hide the dsa_8021q VLANs from the user. */
-		if (!priv->vlan_aware)
+		if (!dsa_port_is_vlan_filtering(ds, port))
 			l2_lookup.vlanid = 0;
 		rc = cb(macaddr, l2_lookup.vlanid, l2_lookup.lockeds, data);
 		if (rc)
@@ -2295,11 +2295,6 @@ int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
 		tpid2 = ETH_P_SJA1105;
 	}
 
-	if (priv->vlan_aware == enabled)
-		return 0;
-
-	priv->vlan_aware = enabled;
-
 	table = &priv->static_config.tables[BLK_IDX_GENERAL_PARAMS];
 	general_params = table->entries;
 	/* EtherType used to identify inner tagged (C-tag) VLAN traffic */
@@ -2332,7 +2327,7 @@ int sja1105_vlan_filtering(struct dsa_switch *ds, int port, bool enabled,
 	 */
 	table = &priv->static_config.tables[BLK_IDX_L2_LOOKUP_PARAMS];
 	l2_lookup_params = table->entries;
-	l2_lookup_params->shared_learn = !priv->vlan_aware;
+	l2_lookup_params->shared_learn = !enabled;
 
 	for (port = 0; port < ds->num_ports; port++) {
 		if (dsa_is_unused_port(ds, port))
diff --git a/drivers/net/dsa/sja1105/sja1105_vl.c b/drivers/net/dsa/sja1105/sja1105_vl.c
index ec7b65daec20..0f77ec78094b 100644
--- a/drivers/net/dsa/sja1105/sja1105_vl.c
+++ b/drivers/net/dsa/sja1105/sja1105_vl.c
@@ -494,13 +494,16 @@ int sja1105_vl_redirect(struct sja1105_private *priv, int port,
 			bool append)
 {
 	struct sja1105_rule *rule = sja1105_rule_find(priv, cookie);
+	struct dsa_switch *ds = priv->ds;
 	int rc;
 
-	if (!priv->vlan_aware && key->type != SJA1105_KEY_VLAN_UNAWARE_VL) {
+	if (!dsa_port_is_vlan_filtering(ds, port) &&
+	    key->type != SJA1105_KEY_VLAN_UNAWARE_VL) {
 		NL_SET_ERR_MSG_MOD(extack,
 				   "Can only redirect based on DMAC");
 		return -EOPNOTSUPP;
-	} else if (priv->vlan_aware && key->type != SJA1105_KEY_VLAN_AWARE_VL) {
+	} else if (dsa_port_is_vlan_filtering(ds, port) &&
+		   key->type != SJA1105_KEY_VLAN_AWARE_VL) {
 		NL_SET_ERR_MSG_MOD(extack,
 				   "Can only redirect based on {DMAC, VID, PCP}");
 		return -EOPNOTSUPP;
@@ -592,11 +595,13 @@ int sja1105_vl_gate(struct sja1105_private *priv, int port,
 		return -ERANGE;
 	}
 
-	if (!priv->vlan_aware && key->type != SJA1105_KEY_VLAN_UNAWARE_VL) {
+	if (!dsa_port_is_vlan_filtering(ds, port) &&
+	    key->type != SJA1105_KEY_VLAN_UNAWARE_VL) {
 		NL_SET_ERR_MSG_MOD(extack,
 				   "Can only gate based on DMAC");
 		return -EOPNOTSUPP;
-	} else if (priv->vlan_aware && key->type != SJA1105_KEY_VLAN_AWARE_VL) {
+	} else if (dsa_port_is_vlan_filtering(ds, port) &&
+		   key->type != SJA1105_KEY_VLAN_AWARE_VL) {
 		NL_SET_ERR_MSG_MOD(extack,
 				   "Can only gate based on {DMAC, VID, PCP}");
 		return -EOPNOTSUPP;
-- 
2.25.1