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-rw-r--r--net/dsa/dsa.c2
-rw-r--r--net/dsa/dsa_priv.h1
-rw-r--r--net/dsa/tag_ksz.c34
3 files changed, 37 insertions, 0 deletions
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index aee909bcddc4..36de4f2a3366 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -57,6 +57,7 @@ const struct dsa_device_ops *dsa_device_ops[DSA_TAG_LAST] = {
#endif
#ifdef CONFIG_NET_DSA_TAG_KSZ9477
[DSA_TAG_PROTO_KSZ9477] = &ksz9477_netdev_ops,
+ [DSA_TAG_PROTO_KSZ9893] = &ksz9893_netdev_ops,
#endif
#ifdef CONFIG_NET_DSA_TAG_LAN9303
[DSA_TAG_PROTO_LAN9303] = &lan9303_netdev_ops,
@@ -93,6 +94,7 @@ const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops)
#endif
#ifdef CONFIG_NET_DSA_TAG_KSZ9477
[DSA_TAG_PROTO_KSZ9477] = "ksz9477",
+ [DSA_TAG_PROTO_KSZ9893] = "ksz9893",
#endif
#ifdef CONFIG_NET_DSA_TAG_LAN9303
[DSA_TAG_PROTO_LAN9303] = "lan9303",
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index c6caa58c5c71..093b7d145eb1 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -216,6 +216,7 @@ extern const struct dsa_device_ops gswip_netdev_ops;
/* tag_ksz.c */
extern const struct dsa_device_ops ksz9477_netdev_ops;
+extern const struct dsa_device_ops ksz9893_netdev_ops;
/* tag_lan9303.c */
extern const struct dsa_device_ops lan9303_netdev_ops;
diff --git a/net/dsa/tag_ksz.c b/net/dsa/tag_ksz.c
index 927e9c86f745..de246c93d3bb 100644
--- a/net/dsa/tag_ksz.c
+++ b/net/dsa/tag_ksz.c
@@ -16,6 +16,7 @@
/* Typically only one byte is used for tail tag. */
#define KSZ_EGRESS_TAG_LEN 1
+#define KSZ_INGRESS_TAG_LEN 1
static struct sk_buff *ksz_common_xmit(struct sk_buff *skb,
struct net_device *dev, int len)
@@ -141,3 +142,36 @@ const struct dsa_device_ops ksz9477_netdev_ops = {
.rcv = ksz9477_rcv,
.overhead = KSZ9477_INGRESS_TAG_LEN,
};
+
+#define KSZ9893_TAIL_TAG_OVERRIDE BIT(5)
+#define KSZ9893_TAIL_TAG_LOOKUP BIT(6)
+
+static struct sk_buff *ksz9893_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+ struct sk_buff *nskb;
+ u8 *addr;
+ u8 *tag;
+
+ nskb = ksz_common_xmit(skb, dev, KSZ_INGRESS_TAG_LEN);
+ if (!nskb)
+ return NULL;
+
+ /* Tag encoding */
+ tag = skb_put(nskb, KSZ_INGRESS_TAG_LEN);
+ addr = skb_mac_header(nskb);
+
+ *tag = BIT(dp->index);
+
+ if (is_link_local_ether_addr(addr))
+ *tag |= KSZ9893_TAIL_TAG_OVERRIDE;
+
+ return nskb;
+}
+
+const struct dsa_device_ops ksz9893_netdev_ops = {
+ .xmit = ksz9893_xmit,
+ .rcv = ksz9477_rcv,
+ .overhead = KSZ_INGRESS_TAG_LEN,
+};