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| author | David S. Miller <davem@davemloft.net> | 2019-03-03 13:48:49 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-03-03 13:48:49 -0800 |
| commit | 41bc0ddb80e0380ab88b3902e638c89b3453b421 (patch) | |
| tree | b43e6d6876f27e264c557266bbeb809780ad8b44 /net/dsa | |
| parent | d5fa9c55e5f32e1ebe2a1e4b5e4a21d54db17a16 (diff) | |
| parent | 8c29bebb1f8a68556db70088fd8f5938527a7346 (diff) | |
Merge branch 'net-dsa-microchip-add-KSZ9893-switch-support'
Tristram Ha says:
====================
net: dsa: microchip: add KSZ9893 switch support
This series of patches is to modify the KSZ9477 DSA driver to support
running KSZ9893 switch.
The KSZ9893 switch is similar to KSZ9477 except the ingress tail tag has
1 byte instead of 2 bytes. The XMII register that governs the MAC
communication also has different register definitions.
v1
- Put KSZ9893 tagging in separate patch
- Remove other switch support
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
| -rw-r--r-- | net/dsa/dsa.c | 2 | ||||
| -rw-r--r-- | net/dsa/dsa_priv.h | 1 | ||||
| -rw-r--r-- | net/dsa/tag_ksz.c | 34 |
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, +}; |