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-rw-r--r--net/dsa/Kconfig7
-rw-r--r--net/dsa/Makefile1
-rw-r--r--net/dsa/dsa2.c25
-rw-r--r--net/dsa/dsa_priv.h2
-rw-r--r--net/dsa/master.c62
-rw-r--r--net/dsa/slave.c6
-rw-r--r--net/dsa/tag_ksz.c9
-rw-r--r--net/dsa/tag_lan9303.c17
-rw-r--r--net/dsa/tag_mtk.c3
-rw-r--r--net/dsa/tag_ocelot.c21
-rw-r--r--net/dsa/tag_qca.c8
-rw-r--r--net/dsa/tag_rtl4_a.c130
12 files changed, 199 insertions, 92 deletions
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
index d5bc6ac599ef..1f9b9b11008c 100644
--- a/net/dsa/Kconfig
+++ b/net/dsa/Kconfig
@@ -86,6 +86,13 @@ config NET_DSA_TAG_KSZ
Say Y if you want to enable support for tagging frames for the
Microchip 8795/9477/9893 families of switches.
+config NET_DSA_TAG_RTL4_A
+ tristate "Tag driver for Realtek 4 byte protocol A tags"
+ help
+ Say Y or M if you want to enable support for tagging frames for the
+ Realtek switches with 4 byte protocol A tags, sich as found in
+ the Realtek RTL8366RB.
+
config NET_DSA_TAG_OCELOT
tristate "Tag driver for Ocelot family of switches"
select PACKING
diff --git a/net/dsa/Makefile b/net/dsa/Makefile
index 108486cfdeef..4f47b2025ff5 100644
--- a/net/dsa/Makefile
+++ b/net/dsa/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_NET_DSA_TAG_DSA) += tag_dsa.o
obj-$(CONFIG_NET_DSA_TAG_EDSA) += tag_edsa.o
obj-$(CONFIG_NET_DSA_TAG_GSWIP) += tag_gswip.o
obj-$(CONFIG_NET_DSA_TAG_KSZ) += tag_ksz.o
+obj-$(CONFIG_NET_DSA_TAG_RTL4_A) += tag_rtl4_a.o
obj-$(CONFIG_NET_DSA_TAG_LAN9303) += tag_lan9303.o
obj-$(CONFIG_NET_DSA_TAG_MTK) += tag_mtk.o
obj-$(CONFIG_NET_DSA_TAG_OCELOT) += tag_ocelot.o
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 076908fdd29b..c0ffc7a2b65f 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -261,10 +261,15 @@ static int dsa_port_setup(struct dsa_port *dp)
struct devlink_port *dlp = &dp->devlink_port;
bool dsa_port_link_registered = false;
bool devlink_port_registered = false;
+ struct devlink_port_attrs attrs = {};
struct devlink *dl = ds->devlink;
bool dsa_port_enabled = false;
int err = 0;
+ attrs.phys.port_number = dp->index;
+ memcpy(attrs.switch_id.id, id, len);
+ attrs.switch_id.id_len = len;
+
if (dp->setup)
return 0;
@@ -274,8 +279,8 @@ static int dsa_port_setup(struct dsa_port *dp)
break;
case DSA_PORT_TYPE_CPU:
memset(dlp, 0, sizeof(*dlp));
- devlink_port_attrs_set(dlp, DEVLINK_PORT_FLAVOUR_CPU,
- dp->index, false, 0, id, len);
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_CPU;
+ devlink_port_attrs_set(dlp, &attrs);
err = devlink_port_register(dl, dlp, dp->index);
if (err)
break;
@@ -294,8 +299,8 @@ static int dsa_port_setup(struct dsa_port *dp)
break;
case DSA_PORT_TYPE_DSA:
memset(dlp, 0, sizeof(*dlp));
- devlink_port_attrs_set(dlp, DEVLINK_PORT_FLAVOUR_DSA,
- dp->index, false, 0, id, len);
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_DSA;
+ devlink_port_attrs_set(dlp, &attrs);
err = devlink_port_register(dl, dlp, dp->index);
if (err)
break;
@@ -314,8 +319,8 @@ static int dsa_port_setup(struct dsa_port *dp)
break;
case DSA_PORT_TYPE_USER:
memset(dlp, 0, sizeof(*dlp));
- devlink_port_attrs_set(dlp, DEVLINK_PORT_FLAVOUR_PHYSICAL,
- dp->index, false, 0, id, len);
+ attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
+ devlink_port_attrs_set(dlp, &attrs);
err = devlink_port_register(dl, dlp, dp->index);
if (err)
break;
@@ -722,8 +727,12 @@ static int dsa_switch_parse_ports_of(struct dsa_switch *ds,
ports = of_get_child_by_name(dn, "ports");
if (!ports) {
- dev_err(ds->dev, "no ports child node found\n");
- return -EINVAL;
+ /* The second possibility is "ethernet-ports" */
+ ports = of_get_child_by_name(dn, "ethernet-ports");
+ if (!ports) {
+ dev_err(ds->dev, "no ports child node found\n");
+ return -EINVAL;
+ }
}
for_each_available_child_of_node(ports, port) {
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index adecf73bd608..1653e3377cb3 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -77,7 +77,7 @@ struct dsa_slave_priv {
struct sk_buff * (*xmit)(struct sk_buff *skb,
struct net_device *dev);
- struct pcpu_sw_netstats *stats64;
+ struct pcpu_sw_netstats __percpu *stats64;
struct gro_cells gcells;
diff --git a/net/dsa/master.c b/net/dsa/master.c
index 480a61460c23..61615ebc70e9 100644
--- a/net/dsa/master.c
+++ b/net/dsa/master.c
@@ -186,17 +186,6 @@ static void dsa_master_get_strings(struct net_device *dev, uint32_t stringset,
}
}
-static int dsa_master_get_phys_port_name(struct net_device *dev,
- char *name, size_t len)
-{
- struct dsa_port *cpu_dp = dev->dsa_ptr;
-
- if (snprintf(name, len, "p%d", cpu_dp->index) >= len)
- return -EINVAL;
-
- return 0;
-}
-
static int dsa_master_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct dsa_port *cpu_dp = dev->dsa_ptr;
@@ -220,12 +209,16 @@ static int dsa_master_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
break;
}
- if (cpu_dp->orig_ndo_ops && cpu_dp->orig_ndo_ops->ndo_do_ioctl)
- err = cpu_dp->orig_ndo_ops->ndo_do_ioctl(dev, ifr, cmd);
+ if (dev->netdev_ops->ndo_do_ioctl)
+ err = dev->netdev_ops->ndo_do_ioctl(dev, ifr, cmd);
return err;
}
+static const struct dsa_netdevice_ops dsa_netdev_ops = {
+ .ndo_do_ioctl = dsa_master_ioctl,
+};
+
static int dsa_master_ethtool_setup(struct net_device *dev)
{
struct dsa_port *cpu_dp = dev->dsa_ptr;
@@ -260,38 +253,10 @@ static void dsa_master_ethtool_teardown(struct net_device *dev)
cpu_dp->orig_ethtool_ops = NULL;
}
-static int dsa_master_ndo_setup(struct net_device *dev)
+static void dsa_netdev_ops_set(struct net_device *dev,
+ const struct dsa_netdevice_ops *ops)
{
- struct dsa_port *cpu_dp = dev->dsa_ptr;
- struct dsa_switch *ds = cpu_dp->ds;
- struct net_device_ops *ops;
-
- if (dev->netdev_ops->ndo_get_phys_port_name)
- return 0;
-
- ops = devm_kzalloc(ds->dev, sizeof(*ops), GFP_KERNEL);
- if (!ops)
- return -ENOMEM;
-
- cpu_dp->orig_ndo_ops = dev->netdev_ops;
- if (cpu_dp->orig_ndo_ops)
- memcpy(ops, cpu_dp->orig_ndo_ops, sizeof(*ops));
-
- ops->ndo_get_phys_port_name = dsa_master_get_phys_port_name;
- ops->ndo_do_ioctl = dsa_master_ioctl;
-
- dev->netdev_ops = ops;
-
- return 0;
-}
-
-static void dsa_master_ndo_teardown(struct net_device *dev)
-{
- struct dsa_port *cpu_dp = dev->dsa_ptr;
-
- if (cpu_dp->orig_ndo_ops)
- dev->netdev_ops = cpu_dp->orig_ndo_ops;
- cpu_dp->orig_ndo_ops = NULL;
+ dev->dsa_ptr->netdev_ops = ops;
}
static ssize_t tagging_show(struct device *d, struct device_attribute *attr,
@@ -353,9 +318,7 @@ int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp)
if (ret)
return ret;
- ret = dsa_master_ndo_setup(dev);
- if (ret)
- goto out_err_ethtool_teardown;
+ dsa_netdev_ops_set(dev, &dsa_netdev_ops);
ret = sysfs_create_group(&dev->dev.kobj, &dsa_group);
if (ret)
@@ -364,8 +327,7 @@ int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp)
return ret;
out_err_ndo_teardown:
- dsa_master_ndo_teardown(dev);
-out_err_ethtool_teardown:
+ dsa_netdev_ops_set(dev, NULL);
dsa_master_ethtool_teardown(dev);
return ret;
}
@@ -373,7 +335,7 @@ out_err_ethtool_teardown:
void dsa_master_teardown(struct net_device *dev)
{
sysfs_remove_group(&dev->dev.kobj, &dsa_group);
- dsa_master_ndo_teardown(dev);
+ dsa_netdev_ops_set(dev, NULL);
dsa_master_ethtool_teardown(dev);
dsa_master_reset_mtu(dev);
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 4c7f086a047b..41d60eeefdbd 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1754,11 +1754,8 @@ int dsa_slave_create(struct dsa_port *port)
eth_hw_addr_inherit(slave_dev, master);
slave_dev->priv_flags |= IFF_NO_QUEUE;
slave_dev->netdev_ops = &dsa_slave_netdev_ops;
- slave_dev->min_mtu = 0;
if (ds->ops->port_max_mtu)
slave_dev->max_mtu = ds->ops->port_max_mtu(ds, port->index);
- else
- slave_dev->max_mtu = ETH_MAX_MTU;
SET_NETDEV_DEVTYPE(slave_dev, &dsa_type);
netdev_for_each_tx_queue(slave_dev, dsa_slave_set_lockdep_class_one,
@@ -1795,7 +1792,8 @@ int dsa_slave_create(struct dsa_port *port)
ret = dsa_slave_phy_setup(slave_dev);
if (ret) {
- netdev_err(master, "error %d setting up slave phy\n", ret);
+ netdev_err(master, "error %d setting up slave PHY for %s\n",
+ ret, slave_dev->name);
goto out_gcells;
}
diff --git a/net/dsa/tag_ksz.c b/net/dsa/tag_ksz.c
index 90d055c4df9e..bd1a3158d79a 100644
--- a/net/dsa/tag_ksz.c
+++ b/net/dsa/tag_ksz.c
@@ -156,8 +156,9 @@ static struct sk_buff *ksz9477_xmit(struct sk_buff *skb,
{
struct dsa_port *dp = dsa_slave_to_port(dev);
struct sk_buff *nskb;
- u16 *tag;
+ __be16 *tag;
u8 *addr;
+ u16 val;
nskb = ksz_common_xmit(skb, dev, KSZ9477_INGRESS_TAG_LEN);
if (!nskb)
@@ -167,12 +168,12 @@ static struct sk_buff *ksz9477_xmit(struct sk_buff *skb,
tag = skb_put(nskb, KSZ9477_INGRESS_TAG_LEN);
addr = skb_mac_header(nskb);
- *tag = BIT(dp->index);
+ val = BIT(dp->index);
if (is_link_local_ether_addr(addr))
- *tag |= KSZ9477_TAIL_TAG_OVERRIDE;
+ val |= KSZ9477_TAIL_TAG_OVERRIDE;
- *tag = cpu_to_be16(*tag);
+ *tag = cpu_to_be16(val);
return nskb;
}
diff --git a/net/dsa/tag_lan9303.c b/net/dsa/tag_lan9303.c
index eb0e7a32e53d..ccfb6f641bbf 100644
--- a/net/dsa/tag_lan9303.c
+++ b/net/dsa/tag_lan9303.c
@@ -55,7 +55,8 @@ static int lan9303_xmit_use_arl(struct dsa_port *dp, u8 *dest_addr)
static struct sk_buff *lan9303_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct dsa_port *dp = dsa_slave_to_port(dev);
- u16 *lan9303_tag;
+ __be16 *lan9303_tag;
+ u16 tag;
/* insert a special VLAN tag between the MAC addresses
* and the current ethertype field.
@@ -72,12 +73,12 @@ static struct sk_buff *lan9303_xmit(struct sk_buff *skb, struct net_device *dev)
/* make room between MACs and Ether-Type */
memmove(skb->data, skb->data + LAN9303_TAG_LEN, 2 * ETH_ALEN);
- lan9303_tag = (u16 *)(skb->data + 2 * ETH_ALEN);
+ lan9303_tag = (__be16 *)(skb->data + 2 * ETH_ALEN);
+ tag = lan9303_xmit_use_arl(dp, skb->data) ?
+ LAN9303_TAG_TX_USE_ALR :
+ dp->index | LAN9303_TAG_TX_STP_OVERRIDE;
lan9303_tag[0] = htons(ETH_P_8021Q);
- lan9303_tag[1] = lan9303_xmit_use_arl(dp, skb->data) ?
- LAN9303_TAG_TX_USE_ALR :
- dp->index | LAN9303_TAG_TX_STP_OVERRIDE;
- lan9303_tag[1] = htons(lan9303_tag[1]);
+ lan9303_tag[1] = htons(tag);
return skb;
}
@@ -85,7 +86,7 @@ static struct sk_buff *lan9303_xmit(struct sk_buff *skb, struct net_device *dev)
static struct sk_buff *lan9303_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt)
{
- u16 *lan9303_tag;
+ __be16 *lan9303_tag;
u16 lan9303_tag1;
unsigned int source_port;
@@ -101,7 +102,7 @@ static struct sk_buff *lan9303_rcv(struct sk_buff *skb, struct net_device *dev,
* ^
* ->data
*/
- lan9303_tag = (u16 *)(skb->data - 2);
+ lan9303_tag = (__be16 *)(skb->data - 2);
if (lan9303_tag[0] != htons(ETH_P_8021Q)) {
dev_warn_ratelimited(&dev->dev, "Dropping packet due to invalid VLAN marker\n");
diff --git a/net/dsa/tag_mtk.c b/net/dsa/tag_mtk.c
index d6619edd53e5..f602fc758d68 100644
--- a/net/dsa/tag_mtk.c
+++ b/net/dsa/tag_mtk.c
@@ -67,8 +67,9 @@ static struct sk_buff *mtk_tag_xmit(struct sk_buff *skb,
static struct sk_buff *mtk_tag_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt)
{
+ u16 hdr;
int port;
- __be16 *phdr, hdr;
+ __be16 *phdr;
unsigned char *dest = eth_hdr(skb)->h_dest;
bool is_multicast_skb = is_multicast_ether_addr(dest) &&
!is_broadcast_ether_addr(dest);
diff --git a/net/dsa/tag_ocelot.c b/net/dsa/tag_ocelot.c
index b0c98ee4e13b..42f327c06dca 100644
--- a/net/dsa/tag_ocelot.c
+++ b/net/dsa/tag_ocelot.c
@@ -137,11 +137,10 @@ static struct sk_buff *ocelot_xmit(struct sk_buff *skb,
struct net_device *netdev)
{
struct dsa_port *dp = dsa_slave_to_port(netdev);
- u64 bypass, dest, src, qos_class, rew_op;
struct dsa_switch *ds = dp->ds;
- int port = dp->index;
struct ocelot *ocelot = ds->priv;
- struct ocelot_port *ocelot_port = ocelot->ports[port];
+ struct ocelot_port *ocelot_port;
+ u64 qos_class, rew_op;
u8 *injection;
if (unlikely(skb_cow_head(skb, OCELOT_TAG_LEN) < 0)) {
@@ -149,19 +148,15 @@ static struct sk_buff *ocelot_xmit(struct sk_buff *skb,
return NULL;
}
- injection = skb_push(skb, OCELOT_TAG_LEN);
+ ocelot_port = ocelot->ports[dp->index];
- memset(injection, 0, OCELOT_TAG_LEN);
+ injection = skb_push(skb, OCELOT_TAG_LEN);
- /* Set the source port as the CPU port module and not the NPI port */
- src = ocelot->num_phys_ports;
- dest = BIT(port);
- bypass = true;
+ memcpy(injection, ocelot_port->xmit_template, OCELOT_TAG_LEN);
+ /* Fix up the fields which are not statically determined
+ * in the template
+ */
qos_class = skb->priority;
-
- packing(injection, &bypass, 127, 127, OCELOT_TAG_LEN, PACK, 0);
- packing(injection, &dest, 68, 56, OCELOT_TAG_LEN, PACK, 0);
- packing(injection, &src, 46, 43, OCELOT_TAG_LEN, PACK, 0);
packing(injection, &qos_class, 19, 17, OCELOT_TAG_LEN, PACK, 0);
if (ocelot->ptp && (skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
diff --git a/net/dsa/tag_qca.c b/net/dsa/tag_qca.c
index 70db7c909f74..7066f5e697d7 100644
--- a/net/dsa/tag_qca.c
+++ b/net/dsa/tag_qca.c
@@ -31,7 +31,8 @@
static struct sk_buff *qca_tag_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct dsa_port *dp = dsa_slave_to_port(dev);
- u16 *phdr, hdr;
+ __be16 *phdr;
+ u16 hdr;
if (skb_cow_head(skb, QCA_HDR_LEN) < 0)
return NULL;
@@ -39,7 +40,7 @@ static struct sk_buff *qca_tag_xmit(struct sk_buff *skb, struct net_device *dev)
skb_push(skb, QCA_HDR_LEN);
memmove(skb->data, skb->data + QCA_HDR_LEN, 2 * ETH_ALEN);
- phdr = (u16 *)(skb->data + 2 * ETH_ALEN);
+ phdr = (__be16 *)(skb->data + 2 * ETH_ALEN);
/* Set the version field, and set destination port information */
hdr = QCA_HDR_VERSION << QCA_HDR_XMIT_VERSION_S |
@@ -54,8 +55,9 @@ static struct sk_buff *qca_tag_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt)
{
u8 ver;
+ u16 hdr;
int port;
- __be16 *phdr, hdr;
+ __be16 *phdr;
if (unlikely(!pskb_may_pull(skb, QCA_HDR_LEN)))
return NULL;
diff --git a/net/dsa/tag_rtl4_a.c b/net/dsa/tag_rtl4_a.c
new file mode 100644
index 000000000000..7b63010fa87b
--- /dev/null
+++ b/net/dsa/tag_rtl4_a.c
@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Handler for Realtek 4 byte DSA switch tags
+ * Currently only supports protocol "A" found in RTL8366RB
+ * Copyright (c) 2020 Linus Walleij <linus.walleij@linaro.org>
+ *
+ * This "proprietary tag" header looks like so:
+ *
+ * -------------------------------------------------
+ * | MAC DA | MAC SA | 0x8899 | 2 bytes tag | Type |
+ * -------------------------------------------------
+ *
+ * The 2 bytes tag form a 16 bit big endian word. The exact
+ * meaning has been guessed from packet dumps from ingress
+ * frames, as no working egress traffic has been available
+ * we do not know the format of the egress tags or if they
+ * are even supported.
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/bits.h>
+
+#include "dsa_priv.h"
+
+#define RTL4_A_HDR_LEN 4
+#define RTL4_A_ETHERTYPE 0x8899
+#define RTL4_A_PROTOCOL_SHIFT 12
+/*
+ * 0x1 = Realtek Remote Control protocol (RRCP)
+ * 0x2/0x3 seems to be used for loopback testing
+ * 0x9 = RTL8306 DSA protocol
+ * 0xa = RTL8366RB DSA protocol
+ */
+#define RTL4_A_PROTOCOL_RTL8366RB 0xa
+
+static struct sk_buff *rtl4a_tag_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ /*
+ * Just let it pass thru, we don't know if it is possible
+ * to tag a frame with the 0x8899 ethertype and direct it
+ * to a specific port, all attempts at reverse-engineering have
+ * ended up with the frames getting dropped.
+ *
+ * The VLAN set-up needs to restrict the frames to the right port.
+ *
+ * If you have documentation on the tagging format for RTL8366RB
+ * (tag type A) then please contribute.
+ */
+ return skb;
+}
+
+static struct sk_buff *rtl4a_tag_rcv(struct sk_buff *skb,
+ struct net_device *dev,
+ struct packet_type *pt)
+{
+ u16 protport;
+ __be16 *p;
+ u16 etype;
+ u8 *tag;
+ u8 prot;
+ u8 port;
+
+ if (unlikely(!pskb_may_pull(skb, RTL4_A_HDR_LEN)))
+ return NULL;
+
+ /* The RTL4 header has its own custom Ethertype 0x8899 and that
+ * starts right at the beginning of the packet, after the src
+ * ethernet addr. Apparantly skb->data always points 2 bytes in,
+ * behind the Ethertype.
+ */
+ tag = skb->data - 2;
+ p = (__be16 *)tag;
+ etype = ntohs(*p);
+ if (etype != RTL4_A_ETHERTYPE) {
+ /* Not custom, just pass through */
+ netdev_dbg(dev, "non-realtek ethertype 0x%04x\n", etype);
+ return skb;
+ }
+ p = (__be16 *)(tag + 2);
+ protport = ntohs(*p);
+ /* The 4 upper bits are the protocol */
+ prot = (protport >> RTL4_A_PROTOCOL_SHIFT) & 0x0f;
+ if (prot != RTL4_A_PROTOCOL_RTL8366RB) {
+ netdev_err(dev, "unknown realtek protocol 0x%01x\n", prot);
+ return NULL;
+ }
+ port = protport & 0xff;
+
+ skb->dev = dsa_master_find_slave(dev, 0, port);
+ if (!skb->dev) {
+ netdev_dbg(dev, "could not find slave for port %d\n", port);
+ return NULL;
+ }
+
+ /* Remove RTL4 tag and recalculate checksum */
+ skb_pull_rcsum(skb, RTL4_A_HDR_LEN);
+
+ /* Move ethernet DA and SA in front of the data */
+ memmove(skb->data - ETH_HLEN,
+ skb->data - ETH_HLEN - RTL4_A_HDR_LEN,
+ 2 * ETH_ALEN);
+
+ skb->offload_fwd_mark = 1;
+
+ return skb;
+}
+
+static int rtl4a_tag_flow_dissect(const struct sk_buff *skb, __be16 *proto,
+ int *offset)
+{
+ *offset = RTL4_A_HDR_LEN;
+ /* Skip past the tag and fetch the encapsulated Ethertype */
+ *proto = ((__be16 *)skb->data)[1];
+
+ return 0;
+}
+
+static const struct dsa_device_ops rtl4a_netdev_ops = {
+ .name = "rtl4a",
+ .proto = DSA_TAG_PROTO_RTL4_A,
+ .xmit = rtl4a_tag_xmit,
+ .rcv = rtl4a_tag_rcv,
+ .flow_dissect = rtl4a_tag_flow_dissect,
+ .overhead = RTL4_A_HDR_LEN,
+};
+module_dsa_tag_driver(rtl4a_netdev_ops);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_DSA_TAG_DRIVER(DSA_TAG_PROTO_RTL4_A);