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-rw-r--r--net/dsa/Kconfig9
-rw-r--r--net/dsa/Makefile3
-rw-r--r--net/dsa/dsa2.c2
-rw-r--r--net/dsa/dsa_priv.h9
-rw-r--r--net/dsa/legacy.c20
-rw-r--r--net/dsa/slave.c25
-rw-r--r--net/dsa/switch.c111
-rw-r--r--net/dsa/tag_mtk.c38
8 files changed, 142 insertions, 75 deletions
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig
index 03c3bdf25468..bbf2c82cf7b2 100644
--- a/net/dsa/Kconfig
+++ b/net/dsa/Kconfig
@@ -16,6 +16,15 @@ config NET_DSA
if NET_DSA
+config NET_DSA_LEGACY
+ bool "Support for older platform device and Device Tree registration"
+ default y
+ ---help---
+ Say Y if you want to enable support for the older platform device and
+ deprecated Device Tree binding registration.
+
+ This feature is scheduled for removal in 4.17.
+
# tagging formats
config NET_DSA_TAG_BRCM
bool
diff --git a/net/dsa/Makefile b/net/dsa/Makefile
index 0e13c1f95d13..9e4d3536f977 100644
--- a/net/dsa/Makefile
+++ b/net/dsa/Makefile
@@ -1,7 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
# the core
obj-$(CONFIG_NET_DSA) += dsa_core.o
-dsa_core-y += dsa.o dsa2.o legacy.o master.o port.o slave.o switch.o
+dsa_core-y += dsa.o dsa2.o master.o port.o slave.o switch.o
+dsa_core-$(CONFIG_NET_DSA_LEGACY) += legacy.o
# tagging formats
dsa_core-$(CONFIG_NET_DSA_TAG_BRCM) += tag_brcm.o
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 1e287420ff49..21f9bed11988 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -241,7 +241,7 @@ static int dsa_tree_setup_default_cpu(struct dsa_switch_tree *dst)
for (port = 0; port < ds->num_ports; port++) {
dp = &ds->ports[port];
- if (dsa_port_is_user(dp))
+ if (dsa_port_is_user(dp) || dsa_port_is_dsa(dp))
dp->cpu_dp = dst->cpu_dp;
}
}
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 7d036696e8c4..b03665e8fb4e 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -97,8 +97,17 @@ const struct dsa_device_ops *dsa_resolve_tag_protocol(int tag_protocol);
bool dsa_schedule_work(struct work_struct *work);
/* legacy.c */
+#if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
int dsa_legacy_register(void);
void dsa_legacy_unregister(void);
+#else
+static inline int dsa_legacy_register(void)
+{
+ return -ENODEV;
+}
+
+static inline void dsa_legacy_unregister(void) { }
+#endif
int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid,
diff --git a/net/dsa/legacy.c b/net/dsa/legacy.c
index 84611d7fcfa2..aa56d3fb5da4 100644
--- a/net/dsa/legacy.c
+++ b/net/dsa/legacy.c
@@ -718,26 +718,6 @@ static int dsa_resume(struct device *d)
}
#endif
-/* legacy way, bypassing the bridge *****************************************/
-int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
- struct net_device *dev,
- const unsigned char *addr, u16 vid,
- u16 flags)
-{
- struct dsa_port *dp = dsa_slave_to_port(dev);
-
- return dsa_port_fdb_add(dp, addr, vid);
-}
-
-int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
- struct net_device *dev,
- const unsigned char *addr, u16 vid)
-{
- struct dsa_port *dp = dsa_slave_to_port(dev);
-
- return dsa_port_fdb_del(dp, addr, vid);
-}
-
static SIMPLE_DEV_PM_OPS(dsa_pm_ops, dsa_suspend, dsa_resume);
static const struct of_device_id dsa_of_match_table[] = {
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index a95a55f79137..f52307296de4 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -708,14 +708,12 @@ static int dsa_slave_add_cls_matchall(struct net_device *dev,
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_mall_tc_entry *mall_tc_entry;
__be16 protocol = cls->common.protocol;
- struct net *net = dev_net(dev);
struct dsa_switch *ds = dp->ds;
struct net_device *to_dev;
const struct tc_action *a;
struct dsa_port *to_dp;
int err = -EOPNOTSUPP;
LIST_HEAD(actions);
- int ifindex;
if (!ds->ops->port_mirror_add)
return err;
@@ -729,8 +727,7 @@ static int dsa_slave_add_cls_matchall(struct net_device *dev,
if (is_tcf_mirred_egress_mirror(a) && protocol == htons(ETH_P_ALL)) {
struct dsa_mall_mirror_tc_entry *mirror;
- ifindex = tcf_mirred_ifindex(a);
- to_dev = __dev_get_by_index(net, ifindex);
+ to_dev = tcf_mirred_dev(a);
if (!to_dev)
return -EINVAL;
@@ -943,6 +940,26 @@ static const struct ethtool_ops dsa_slave_ethtool_ops = {
.set_rxnfc = dsa_slave_set_rxnfc,
};
+/* legacy way, bypassing the bridge *****************************************/
+int dsa_legacy_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
+ struct net_device *dev,
+ const unsigned char *addr, u16 vid,
+ u16 flags)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+
+ return dsa_port_fdb_add(dp, addr, vid);
+}
+
+int dsa_legacy_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
+ struct net_device *dev,
+ const unsigned char *addr, u16 vid)
+{
+ struct dsa_port *dp = dsa_slave_to_port(dev);
+
+ return dsa_port_fdb_del(dp, addr, vid);
+}
+
static const struct net_device_ops dsa_slave_netdev_ops = {
.ndo_open = dsa_slave_open,
.ndo_stop = dsa_slave_close,
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 29608d087a7c..b93511726069 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -83,29 +83,52 @@ static int dsa_switch_bridge_leave(struct dsa_switch *ds,
static int dsa_switch_fdb_add(struct dsa_switch *ds,
struct dsa_notifier_fdb_info *info)
{
- /* Do not care yet about other switch chips of the fabric */
- if (ds->index != info->sw_index)
- return 0;
+ int port = dsa_towards_port(ds, info->sw_index, info->port);
if (!ds->ops->port_fdb_add)
return -EOPNOTSUPP;
- return ds->ops->port_fdb_add(ds, info->port, info->addr,
- info->vid);
+ return ds->ops->port_fdb_add(ds, port, info->addr, info->vid);
}
static int dsa_switch_fdb_del(struct dsa_switch *ds,
struct dsa_notifier_fdb_info *info)
{
- /* Do not care yet about other switch chips of the fabric */
- if (ds->index != info->sw_index)
- return 0;
+ int port = dsa_towards_port(ds, info->sw_index, info->port);
if (!ds->ops->port_fdb_del)
return -EOPNOTSUPP;
- return ds->ops->port_fdb_del(ds, info->port, info->addr,
- info->vid);
+ return ds->ops->port_fdb_del(ds, port, info->addr, info->vid);
+}
+
+static int
+dsa_switch_mdb_prepare_bitmap(struct dsa_switch *ds,
+ const struct switchdev_obj_port_mdb *mdb,
+ const unsigned long *bitmap)
+{
+ int port, err;
+
+ if (!ds->ops->port_mdb_prepare || !ds->ops->port_mdb_add)
+ return -EOPNOTSUPP;
+
+ for_each_set_bit(port, bitmap, ds->num_ports) {
+ err = ds->ops->port_mdb_prepare(ds, port, mdb);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static void dsa_switch_mdb_add_bitmap(struct dsa_switch *ds,
+ const struct switchdev_obj_port_mdb *mdb,
+ const unsigned long *bitmap)
+{
+ int port;
+
+ for_each_set_bit(port, bitmap, ds->num_ports)
+ ds->ops->port_mdb_add(ds, port, mdb);
}
static int dsa_switch_mdb_add(struct dsa_switch *ds,
@@ -114,7 +137,7 @@ static int dsa_switch_mdb_add(struct dsa_switch *ds,
const struct switchdev_obj_port_mdb *mdb = info->mdb;
struct switchdev_trans *trans = info->trans;
DECLARE_BITMAP(group, ds->num_ports);
- int port, err;
+ int port;
/* Build a mask of Multicast group members */
bitmap_zero(group, ds->num_ports);
@@ -124,21 +147,10 @@ static int dsa_switch_mdb_add(struct dsa_switch *ds,
if (dsa_is_dsa_port(ds, port))
set_bit(port, group);
- if (switchdev_trans_ph_prepare(trans)) {
- if (!ds->ops->port_mdb_prepare || !ds->ops->port_mdb_add)
- return -EOPNOTSUPP;
-
- for_each_set_bit(port, group, ds->num_ports) {
- err = ds->ops->port_mdb_prepare(ds, port, mdb, trans);
- if (err)
- return err;
- }
-
- return 0;
- }
+ if (switchdev_trans_ph_prepare(trans))
+ return dsa_switch_mdb_prepare_bitmap(ds, mdb, group);
- for_each_set_bit(port, group, ds->num_ports)
- ds->ops->port_mdb_add(ds, port, mdb, trans);
+ dsa_switch_mdb_add_bitmap(ds, mdb, group);
return 0;
}
@@ -157,13 +169,43 @@ static int dsa_switch_mdb_del(struct dsa_switch *ds,
return 0;
}
+static int
+dsa_switch_vlan_prepare_bitmap(struct dsa_switch *ds,
+ const struct switchdev_obj_port_vlan *vlan,
+ const unsigned long *bitmap)
+{
+ int port, err;
+
+ if (!ds->ops->port_vlan_prepare || !ds->ops->port_vlan_add)
+ return -EOPNOTSUPP;
+
+ for_each_set_bit(port, bitmap, ds->num_ports) {
+ err = ds->ops->port_vlan_prepare(ds, port, vlan);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static void
+dsa_switch_vlan_add_bitmap(struct dsa_switch *ds,
+ const struct switchdev_obj_port_vlan *vlan,
+ const unsigned long *bitmap)
+{
+ int port;
+
+ for_each_set_bit(port, bitmap, ds->num_ports)
+ ds->ops->port_vlan_add(ds, port, vlan);
+}
+
static int dsa_switch_vlan_add(struct dsa_switch *ds,
struct dsa_notifier_vlan_info *info)
{
const struct switchdev_obj_port_vlan *vlan = info->vlan;
struct switchdev_trans *trans = info->trans;
DECLARE_BITMAP(members, ds->num_ports);
- int port, err;
+ int port;
/* Build a mask of VLAN members */
bitmap_zero(members, ds->num_ports);
@@ -173,21 +215,10 @@ static int dsa_switch_vlan_add(struct dsa_switch *ds,
if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
set_bit(port, members);
- if (switchdev_trans_ph_prepare(trans)) {
- if (!ds->ops->port_vlan_prepare || !ds->ops->port_vlan_add)
- return -EOPNOTSUPP;
-
- for_each_set_bit(port, members, ds->num_ports) {
- err = ds->ops->port_vlan_prepare(ds, port, vlan, trans);
- if (err)
- return err;
- }
-
- return 0;
- }
+ if (switchdev_trans_ph_prepare(trans))
+ return dsa_switch_vlan_prepare_bitmap(ds, vlan, members);
- for_each_set_bit(port, members, ds->num_ports)
- ds->ops->port_vlan_add(ds, port, vlan, trans);
+ dsa_switch_vlan_add_bitmap(ds, vlan, members);
return 0;
}
diff --git a/net/dsa/tag_mtk.c b/net/dsa/tag_mtk.c
index 8475434af7d5..11535bc70743 100644
--- a/net/dsa/tag_mtk.c
+++ b/net/dsa/tag_mtk.c
@@ -13,10 +13,13 @@
*/
#include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
#include "dsa_priv.h"
#define MTK_HDR_LEN 4
+#define MTK_HDR_XMIT_UNTAGGED 0
+#define MTK_HDR_XMIT_TAGGED_TPID_8100 1
#define MTK_HDR_RECV_SOURCE_PORT_MASK GENMASK(2, 0)
#define MTK_HDR_XMIT_DP_BIT_MASK GENMASK(5, 0)
@@ -25,20 +28,37 @@ static struct sk_buff *mtk_tag_xmit(struct sk_buff *skb,
{
struct dsa_port *dp = dsa_slave_to_port(dev);
u8 *mtk_tag;
+ bool is_vlan_skb = true;
- if (skb_cow_head(skb, MTK_HDR_LEN) < 0)
- return NULL;
-
- skb_push(skb, MTK_HDR_LEN);
+ /* Build the special tag after the MAC Source Address. If VLAN header
+ * is present, it's required that VLAN header and special tag is
+ * being combined. Only in this way we can allow the switch can parse
+ * the both special and VLAN tag at the same time and then look up VLAN
+ * table with VID.
+ */
+ if (!skb_vlan_tagged(skb)) {
+ if (skb_cow_head(skb, MTK_HDR_LEN) < 0)
+ return NULL;
- memmove(skb->data, skb->data + MTK_HDR_LEN, 2 * ETH_ALEN);
+ skb_push(skb, MTK_HDR_LEN);
+ memmove(skb->data, skb->data + MTK_HDR_LEN, 2 * ETH_ALEN);
+ is_vlan_skb = false;
+ }
- /* Build the tag after the MAC Source Address */
mtk_tag = skb->data + 2 * ETH_ALEN;
- mtk_tag[0] = 0;
+
+ /* Mark tag attribute on special tag insertion to notify hardware
+ * whether that's a combined special tag with 802.1Q header.
+ */
+ mtk_tag[0] = is_vlan_skb ? MTK_HDR_XMIT_TAGGED_TPID_8100 :
+ MTK_HDR_XMIT_UNTAGGED;
mtk_tag[1] = (1 << dp->index) & MTK_HDR_XMIT_DP_BIT_MASK;
- mtk_tag[2] = 0;
- mtk_tag[3] = 0;
+
+ /* Tag control information is kept for 802.1Q */
+ if (!is_vlan_skb) {
+ mtk_tag[2] = 0;
+ mtk_tag[3] = 0;
+ }
return skb;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.