aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/generic/backport-5.10/770-v5.15-net-dsa-mt7530-support-MDB-operations.patch
blob: 99f49972ff6b8122c5a8dd82ae0491c371eaadbc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
From 1f11a07a33bc26997c18b633d63f088bf75d11f2 Mon Sep 17 00:00:00 2001
From: DENG Qingfang <dqfext@gmail.com>
Date: Tue, 24 Aug 2021 11:37:50 +0800
Subject: [PATCH] net: dsa: mt7530: support MDB operations

This is a partial backport of commit 5a30833b9a16f8d1aa15de06636f9317ca51f9df
("net: dsa: mt7530: support MDB and bridge flag operations") upstream.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
---
 drivers/net/dsa/mt7530.c | 78 ++++++++++++++++++++++++++++++++++++++--
 net/dsa/tag_mtk.c        | 14 +-------
 2 files changed, 76 insertions(+), 16 deletions(-)

--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1001,9 +1001,6 @@ mt753x_cpu_port_enable(struct dsa_switch
 	mt7530_write(priv, MT7530_PVC_P(port),
 		     PORT_SPEC_TAG);
 
-	/* Unknown multicast frame forwarding to the cpu port */
-	mt7530_rmw(priv, MT7530_MFC, UNM_FFP_MASK, UNM_FFP(BIT(port)));
-
 	/* Set CPU port number */
 	if (priv->id == ID_MT7621)
 		mt7530_rmw(priv, MT7530_MFC, CPU_MASK, CPU_EN | CPU_PORT(port));
@@ -1134,6 +1131,20 @@ mt7530_stp_state_set(struct dsa_switch *
 }
 
 static int
+mt7530_port_egress_floods(struct dsa_switch *ds, int port,
+			  bool unicast, bool multicast)
+{
+	struct mt7530_priv *priv = ds->priv;
+
+	mt7530_rmw(priv, MT7530_MFC,
+		   UNU_FFP(BIT(port)) | UNM_FFP(BIT(port)),
+		   (unicast ? UNU_FFP(BIT(port)) : 0) |
+		   (multicast ? UNM_FFP(BIT(port)) : 0));
+
+	return 0;
+}
+
+static int
 mt7530_port_bridge_join(struct dsa_switch *ds, int port,
 			struct net_device *bridge)
 {
@@ -1334,6 +1345,63 @@ err:
 }
 
 static int
+mt7530_port_mdb_prepare(struct dsa_switch *ds, int port,
+			const struct switchdev_obj_port_mdb *mdb)
+{
+	return 0;
+}
+
+static void
+mt7530_port_mdb_add(struct dsa_switch *ds, int port,
+		    const struct switchdev_obj_port_mdb *mdb)
+{
+	struct mt7530_priv *priv = ds->priv;
+	const u8 *addr = mdb->addr;
+	u16 vid = mdb->vid;
+	u8 port_mask = 0;
+
+	mutex_lock(&priv->reg_mutex);
+
+	mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
+	if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
+		port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
+			    & PORT_MAP_MASK;
+
+	port_mask |= BIT(port);
+	mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
+	mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
+
+	mutex_unlock(&priv->reg_mutex);
+}
+
+static int
+mt7530_port_mdb_del(struct dsa_switch *ds, int port,
+		    const struct switchdev_obj_port_mdb *mdb)
+{
+	struct mt7530_priv *priv = ds->priv;
+	const u8 *addr = mdb->addr;
+	u16 vid = mdb->vid;
+	u8 port_mask = 0;
+	int ret;
+
+	mutex_lock(&priv->reg_mutex);
+
+	mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
+	if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
+		port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
+			    & PORT_MAP_MASK;
+
+	port_mask &= ~BIT(port);
+	mt7530_fdb_write(priv, vid, port_mask, addr, -1,
+			 port_mask ? STATIC_ENT : STATIC_EMP);
+	ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
+
+	mutex_unlock(&priv->reg_mutex);
+
+	return ret;
+}
+
+static int
 mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid)
 {
 	struct mt7530_dummy_poll p;
@@ -2743,11 +2811,15 @@ static const struct dsa_switch_ops mt753
 	.port_change_mtu	= mt7530_port_change_mtu,
 	.port_max_mtu		= mt7530_port_max_mtu,
 	.port_stp_state_set	= mt7530_stp_state_set,
+	.port_egress_floods	= mt7530_port_egress_floods,
 	.port_bridge_join	= mt7530_port_bridge_join,
 	.port_bridge_leave	= mt7530_port_bridge_leave,
 	.port_fdb_add		= mt7530_port_fdb_add,
 	.port_fdb_del		= mt7530_port_fdb_del,
 	.port_fdb_dump		= mt7530_port_fdb_dump,
+	.port_mdb_prepare	= mt7530_port_mdb_prepare,
+	.port_mdb_add		= mt7530_port_mdb_add,
+	.port_mdb_del		= mt7530_port_mdb_del,
 	.port_vlan_filtering	= mt7530_port_vlan_filtering,
 	.port_vlan_prepare	= mt7530_port_vlan_prepare,
 	.port_vlan_add		= mt7530_port_vlan_add,
--- a/net/dsa/tag_mtk.c
+++ b/net/dsa/tag_mtk.c
@@ -24,9 +24,6 @@ static struct sk_buff *mtk_tag_xmit(stru
 	struct dsa_port *dp = dsa_slave_to_port(dev);
 	u8 xmit_tpid;
 	u8 *mtk_tag;
-	unsigned char *dest = eth_hdr(skb)->h_dest;
-	bool is_multicast_skb = is_multicast_ether_addr(dest) &&
-				!is_broadcast_ether_addr(dest);
 
 	/* Build the special tag after the MAC Source Address. If VLAN header
 	 * is present, it's required that VLAN header and special tag is
@@ -55,10 +52,6 @@ static struct sk_buff *mtk_tag_xmit(stru
 	mtk_tag[0] = xmit_tpid;
 	mtk_tag[1] = (1 << dp->index) & MTK_HDR_XMIT_DP_BIT_MASK;
 
-	/* Disable SA learning for multicast frames */
-	if (unlikely(is_multicast_skb))
-		mtk_tag[1] |= MTK_HDR_XMIT_SA_DIS;
-
 	/* Tag control information is kept for 802.1Q */
 	if (xmit_tpid == MTK_HDR_XMIT_UNTAGGED) {
 		mtk_tag[2] = 0;
@@ -74,9 +67,6 @@ static struct sk_buff *mtk_tag_rcv(struc
 	u16 hdr;
 	int port;
 	__be16 *phdr;
-	unsigned char *dest = eth_hdr(skb)->h_dest;
-	bool is_multicast_skb = is_multicast_ether_addr(dest) &&
-				!is_broadcast_ether_addr(dest);
 
 	if (unlikely(!pskb_may_pull(skb, MTK_HDR_LEN)))
 		return NULL;
@@ -102,9 +92,7 @@ static struct sk_buff *mtk_tag_rcv(struc
 	if (!skb->dev)
 		return NULL;
 
-	/* Only unicast or broadcast frames are offloaded */
-	if (likely(!is_multicast_skb))
-		dsa_default_offload_fwd_mark(skb);
+	dsa_default_offload_fwd_mark(skb);
 
 	return skb;
 }