From: DENG Qingfang <dqfext@gmail.com>
To: netdev@vger.kernel.org
Cc: "Sean Wang" <sean.wang@mediatek.com>,
"Andrew Lunn" <andrew@lunn.ch>,
"Vivien Didelot" <vivien.didelot@gmail.com>,
linux-mediatek@lists.infradead.org,
"John Crispin" <john@phrozen.org>,
"Stijn Segers" <foss@volatilesystems.org>,
"Chuanhong Guo" <gch981213@gmail.com>,
riddlariddla@hotmail.com,
"René van Dorst" <opensource@vdorst.com>,
"Szabolcs Hubai" <szab.hu@gmail.com>,
"CHEN Minqiang" <ptpt52@gmail.com>,
"Paul Fertser" <fercerpav@gmail.com>
Subject: [PATCH net-next v2] net: dsa: mt7530: fix tagged frames pass-through in VLAN-unaware mode
Date: Tue, 14 Apr 2020 14:34:08 +0800 [thread overview]
Message-ID: <20200414063408.4026-1-dqfext@gmail.com> (raw)
In VLAN-unaware mode, the Egress Tag (EG_TAG) field in Port VLAN
Control register must be set to Consistent to let tagged frames pass
through as is, otherwise their tags will be stripped.
Fixes: 83163f7dca56 ("net: dsa: mediatek: add VLAN support for MT7530")
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
---
Changes since v1:
- Fix build error
---
drivers/net/dsa/mt7530.c | 18 ++++++++++++------
drivers/net/dsa/mt7530.h | 7 +++++++
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 2d0d91db0ddb..951a65ac7f73 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -846,8 +846,9 @@ mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)
*/
mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
MT7530_PORT_MATRIX_MODE);
- mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK,
- VLAN_ATTR(MT7530_VLAN_TRANSPARENT));
+ mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
+ VLAN_ATTR(MT7530_VLAN_TRANSPARENT) |
+ PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
for (i = 0; i < MT7530_NUM_PORTS; i++) {
if (dsa_is_user_port(ds, i) &&
@@ -863,8 +864,8 @@ mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)
if (all_user_ports_removed) {
mt7530_write(priv, MT7530_PCR_P(MT7530_CPU_PORT),
PCR_MATRIX(dsa_user_ports(priv->ds)));
- mt7530_write(priv, MT7530_PVC_P(MT7530_CPU_PORT),
- PORT_SPEC_TAG);
+ mt7530_write(priv, MT7530_PVC_P(MT7530_CPU_PORT), PORT_SPEC_TAG
+ | PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
}
}
@@ -890,8 +891,9 @@ mt7530_port_set_vlan_aware(struct dsa_switch *ds, int port)
/* Set the port as a user port which is to be able to recognize VID
* from incoming packets before fetching entry within the VLAN table.
*/
- mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK,
- VLAN_ATTR(MT7530_VLAN_USER));
+ mt7530_rmw(priv, MT7530_PVC_P(port), VLAN_ATTR_MASK | PVC_EG_TAG_MASK,
+ VLAN_ATTR(MT7530_VLAN_USER) |
+ PVC_EG_TAG(MT7530_VLAN_EG_DISABLED));
}
static void
@@ -1380,6 +1382,10 @@ mt7530_setup(struct dsa_switch *ds)
mt7530_cpu_port_enable(priv, i);
else
mt7530_port_disable(ds, i);
+
+ /* Enable consistent egress tag */
+ mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
+ PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
}
/* Setup port 5 */
diff --git a/drivers/net/dsa/mt7530.h b/drivers/net/dsa/mt7530.h
index ef9b52f3152b..2528232d3325 100644
--- a/drivers/net/dsa/mt7530.h
+++ b/drivers/net/dsa/mt7530.h
@@ -172,9 +172,16 @@ enum mt7530_port_mode {
/* Register for port vlan control */
#define MT7530_PVC_P(x) (0x2010 + ((x) * 0x100))
#define PORT_SPEC_TAG BIT(5)
+#define PVC_EG_TAG(x) (((x) & 0x7) << 8)
+#define PVC_EG_TAG_MASK PVC_EG_TAG(7)
#define VLAN_ATTR(x) (((x) & 0x3) << 6)
#define VLAN_ATTR_MASK VLAN_ATTR(3)
+enum mt7530_vlan_port_eg_tag {
+ MT7530_VLAN_EG_DISABLED = 0,
+ MT7530_VLAN_EG_CONSISTENT = 1,
+};
+
enum mt7530_vlan_port_attr {
MT7530_VLAN_USER = 0,
MT7530_VLAN_TRANSPARENT = 3,
--
2.26.0
next reply other threads:[~2020-04-14 6:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-14 6:34 DENG Qingfang [this message]
2020-04-15 19:36 ` [PATCH net-next v2] net: dsa: mt7530: fix tagged frames pass-through in VLAN-unaware mode Florian Fainelli
2020-04-16 6:10 ` René van Dorst
2020-04-16 20:32 ` David Miller
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