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Message-Id: <20211026162625.1385035-4-vladimir.oltean@nxp.com>
Date: Tue, 26 Oct 2021 19:26:22 +0300
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: Florian Fainelli <f.fainelli@...il.com>,
Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...il.com>,
Tobias Waldekranz <tobias@...dekranz.com>,
DENG Qingfang <dqfext@...il.com>,
Alvin Šipraga <alsi@...g-olufsen.dk>
Subject: [RFC PATCH net-next 3/6] net: dsa: hide dp->bridge_dev and dp->bridge_num behind helpers
The location of the bridge device pointer and number is going to change.
It is not going to be kept individually per port, but in a common
structure allocated dynamically and which will have lockdep validation.
Create helpers to access these elements so that we have a migration path
to the new organization.
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
drivers/net/dsa/b53/b53_common.c | 4 +-
drivers/net/dsa/lan9303-core.c | 2 +-
drivers/net/dsa/lantiq_gswip.c | 10 ++---
drivers/net/dsa/mt7530.c | 14 ++++---
drivers/net/dsa/mv88e6xxx/chip.c | 56 ++++++++++++++------------
drivers/net/dsa/qca8k.c | 4 +-
drivers/net/dsa/rtl8366rb.c | 4 +-
drivers/net/dsa/sja1105/sja1105_main.c | 10 +++--
drivers/net/dsa/xrs700x/xrs700x.c | 4 +-
include/net/dsa.h | 15 +++++++
net/dsa/dsa_priv.h | 4 +-
net/dsa/port.c | 35 ++++++++--------
net/dsa/slave.c | 14 ++++---
net/dsa/switch.c | 6 +--
net/dsa/tag_8021q.c | 2 +-
net/dsa/tag_dsa.c | 5 ++-
net/dsa/tag_ocelot.c | 2 +-
net/dsa/tag_sja1105.c | 11 +++--
18 files changed, 116 insertions(+), 86 deletions(-)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index af4761968733..d5e78f51f42d 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1887,7 +1887,7 @@ int b53_br_join(struct dsa_switch *ds, int port, struct net_device *br)
b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(port), &pvlan);
b53_for_each_port(dev, i) {
- if (dsa_to_port(ds, i)->bridge_dev != br)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) != br)
continue;
/* Add this local port to the remote port VLAN control
@@ -1923,7 +1923,7 @@ void b53_br_leave(struct dsa_switch *ds, int port, struct net_device *br)
b53_for_each_port(dev, i) {
/* Don't touch the remaining ports */
- if (dsa_to_port(ds, i)->bridge_dev != br)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) != br)
continue;
b53_read16(dev, B53_PVLAN_PAGE, B53_PVLAN_PORT_MASK(i), ®);
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 89f920289ae2..1c2bdcde6979 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -1108,7 +1108,7 @@ static int lan9303_port_bridge_join(struct dsa_switch *ds, int port,
struct lan9303 *chip = ds->priv;
dev_dbg(chip->dev, "%s(port %d)\n", __func__, port);
- if (dsa_to_port(ds, 1)->bridge_dev == dsa_to_port(ds, 2)->bridge_dev) {
+ if (dsa_port_bridge_same(dsa_to_port(ds, 1), dsa_to_port(ds, 2))) {
lan9303_bridge_ports(chip);
chip->is_bridged = true; /* unleash stp_state_set() */
}
diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 7056d98d8177..c60b1eef3545 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -759,7 +759,7 @@ static int gswip_port_vlan_filtering(struct dsa_switch *ds, int port,
bool vlan_filtering,
struct netlink_ext_ack *extack)
{
- struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
+ struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
struct gswip_priv *priv = ds->priv;
/* Do not allow changing the VLAN filtering options while in bridge */
@@ -1183,8 +1183,8 @@ static int gswip_port_vlan_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack)
{
+ struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
struct gswip_priv *priv = ds->priv;
- struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
unsigned int max_ports = priv->hw_info->max_ports;
int pos = max_ports;
int i, idx = -1;
@@ -1229,8 +1229,8 @@ static int gswip_port_vlan_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan,
struct netlink_ext_ack *extack)
{
+ struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
struct gswip_priv *priv = ds->priv;
- struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
int err;
@@ -1254,8 +1254,8 @@ static int gswip_port_vlan_add(struct dsa_switch *ds, int port,
static int gswip_port_vlan_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan)
{
+ struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
struct gswip_priv *priv = ds->priv;
- struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
/* We have to receive all packets on the CPU port and should not
@@ -1340,8 +1340,8 @@ static void gswip_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
static int gswip_port_fdb(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid, bool add)
{
+ struct net_device *bridge = dsa_port_bridge_dev_get(dsa_to_port(ds, port));
struct gswip_priv *priv = ds->priv;
- struct net_device *bridge = dsa_to_port(ds, port)->bridge_dev;
struct gswip_pce_table_entry mac_bridge = {0,};
unsigned int cpu_port = priv->hw_info->cpu_port;
int fid = -1;
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 9890672a206d..79bde263b06f 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1195,12 +1195,14 @@ mt7530_port_bridge_join(struct dsa_switch *ds, int port,
mutex_lock(&priv->reg_mutex);
for (i = 0; i < MT7530_NUM_PORTS; i++) {
+ struct dsa_port *other_dp = dsa_to_port(ds, port);
+
/* Add this port to the port matrix of the other ports in the
* same bridge. If the port is disabled, port matrix is kept
* and not being setup until the port becomes enabled.
*/
- if (dsa_is_user_port(ds, i) && i != port) {
- if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ if (dsa_port_is_user(other_dp) && i != port) {
+ if (dsa_port_bridge_dev_get(other_dp) != bridge)
continue;
if (priv->ports[i].enable)
mt7530_set(priv, MT7530_PCR_P(i),
@@ -1236,7 +1238,7 @@ mt7530_port_set_vlan_unaware(struct dsa_switch *ds, int port)
/* This is called after .port_bridge_leave when leaving a VLAN-aware
* bridge. Don't set standalone ports to fallback mode.
*/
- if (dsa_to_port(ds, port)->bridge_dev)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, port)))
mt7530_rmw(priv, MT7530_PCR_P(port), PCR_PORT_VLAN_MASK,
MT7530_PORT_FALLBACK_MODE);
@@ -1307,12 +1309,14 @@ mt7530_port_bridge_leave(struct dsa_switch *ds, int port,
mutex_lock(&priv->reg_mutex);
for (i = 0; i < MT7530_NUM_PORTS; i++) {
+ struct dsa_port *other_dp = dsa_to_port(ds, i);
+
/* Remove this port from the port matrix of the other ports
* in the same bridge. If the port is disabled, port matrix
* is kept and not being setup until the port becomes enabled.
*/
- if (dsa_is_user_port(ds, i) && i != port) {
- if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ if (dsa_port_is_user(other_dp) && i != port) {
+ if (dsa_port_bridge_dev_get(other_dp) != bridge)
continue;
if (priv->ports[i].enable)
mt7530_clear(priv, MT7530_PCR_P(i),
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index ae09cbc2f42f..b76ce4423ea8 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1225,8 +1225,7 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
{
struct dsa_switch *ds = chip->ds;
struct dsa_switch_tree *dst = ds->dst;
- struct net_device *br;
- struct dsa_port *dp;
+ struct dsa_port *dp, *other_dp;
bool found = false;
u16 pvlan;
@@ -1235,11 +1234,9 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
list_for_each_entry(dp, &dst->ports, list) {
if (dp->ds->index == dev && dp->index == port) {
/* dp might be a DSA link or a user port, so it
- * might or might not have a bridge_dev
- * pointer. Use the "found" variable for both
- * cases.
+ * might or might not have a bridge.
+ * Use the "found" variable for both cases.
*/
- br = dp->bridge_dev;
found = true;
break;
}
@@ -1247,13 +1244,14 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
/* dev is a virtual bridge */
} else {
list_for_each_entry(dp, &dst->ports, list) {
- if (!dp->bridge_num)
+ unsigned int bridge_num = dsa_port_bridge_num_get(dp);
+
+ if (!bridge_num)
continue;
- if (dp->bridge_num + dst->last_switch != dev)
+ if (bridge_num + dst->last_switch != dev)
continue;
- br = dp->bridge_dev;
found = true;
break;
}
@@ -1272,12 +1270,12 @@ static u16 mv88e6xxx_port_vlan(struct mv88e6xxx_chip *chip, int dev, int port)
/* Frames from user ports can egress any local DSA links and CPU ports,
* as well as any local member of their bridge group.
*/
- list_for_each_entry(dp, &dst->ports, list)
- if (dp->ds == ds &&
- (dp->type == DSA_PORT_TYPE_CPU ||
- dp->type == DSA_PORT_TYPE_DSA ||
- (br && dp->bridge_dev == br)))
- pvlan |= BIT(dp->index);
+ list_for_each_entry(other_dp, &dst->ports, list)
+ if (other_dp->ds == ds &&
+ (other_dp->type == DSA_PORT_TYPE_CPU ||
+ other_dp->type == DSA_PORT_TYPE_DSA ||
+ dsa_port_bridge_same(dp, other_dp)))
+ pvlan |= BIT(other_dp->index);
return pvlan;
}
@@ -1644,8 +1642,10 @@ static int mv88e6xxx_atu_new(struct mv88e6xxx_chip *chip, u16 *fid)
static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
u16 vid)
{
+ struct dsa_port *dp = dsa_to_port(ds, port), *other_dp;
struct mv88e6xxx_chip *chip = ds->priv;
struct mv88e6xxx_vtu_entry vlan;
+ struct net_device *other_br;
int i, err;
/* DSA and CPU ports have to be members of multiple vlans */
@@ -1659,27 +1659,30 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
if (!vlan.valid)
return 0;
- for (i = 0; i < mv88e6xxx_num_ports(chip); ++i) {
- if (dsa_is_dsa_port(ds, i) || dsa_is_cpu_port(ds, i))
+ list_for_each_entry(other_dp, &ds->dst->ports, list) {
+ if (other_dp->ds != ds)
continue;
- if (!dsa_to_port(ds, i)->slave)
+ if (dsa_port_is_dsa(other_dp) || dsa_port_is_cpu(other_dp))
+ continue;
+
+ if (!other_dp->slave)
continue;
if (vlan.member[i] ==
MV88E6XXX_G1_VTU_DATA_MEMBER_TAG_NON_MEMBER)
continue;
- if (dsa_to_port(ds, i)->bridge_dev ==
- dsa_to_port(ds, port)->bridge_dev)
+ other_br = dsa_port_bridge_dev_get(other_dp);
+
+ if (dsa_port_bridge_same(dp, other_dp))
break; /* same bridge, check next VLAN */
- if (!dsa_to_port(ds, i)->bridge_dev)
+ if (!other_br)
continue;
dev_err(ds->dev, "p%d: hw VLAN %d already used by port %d in %s\n",
- port, vlan.vid, i,
- netdev_name(dsa_to_port(ds, i)->bridge_dev));
+ port, vlan.vid, i, netdev_name(other_br));
return -EOPNOTSUPP;
}
@@ -1689,13 +1692,14 @@ static int mv88e6xxx_port_check_hw_vlan(struct dsa_switch *ds, int port,
static int mv88e6xxx_port_commit_pvid(struct mv88e6xxx_chip *chip, int port)
{
struct dsa_port *dp = dsa_to_port(chip->ds, port);
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
struct mv88e6xxx_port *p = &chip->ports[port];
u16 pvid = MV88E6XXX_VID_STANDALONE;
bool drop_untagged = false;
int err;
- if (dp->bridge_dev) {
- if (br_vlan_enabled(dp->bridge_dev)) {
+ if (br) {
+ if (br_vlan_enabled(br)) {
pvid = p->bridge_pvid.vid;
drop_untagged = !p->bridge_pvid.valid;
} else {
@@ -2421,7 +2425,7 @@ static int mv88e6xxx_bridge_map(struct mv88e6xxx_chip *chip,
int err;
list_for_each_entry(dp, &dst->ports, list) {
- if (dp->bridge_dev == br) {
+ if (dsa_port_bridge_dev_get(dp) == br) {
if (dp->ds == ds) {
/* This is a local bridge group member,
* remap its Port VLAN Map.
diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
index ea7f12778922..efe20db287a5 100644
--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -1741,7 +1741,7 @@ qca8k_port_bridge_join(struct dsa_switch *ds, int port, struct net_device *br)
for (i = 0; i < QCA8K_NUM_PORTS; i++) {
if (dsa_is_cpu_port(ds, i))
continue;
- if (dsa_to_port(ds, i)->bridge_dev != br)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) != br)
continue;
/* Add this port to the portvlan mask of the other ports
* in the bridge
@@ -1773,7 +1773,7 @@ qca8k_port_bridge_leave(struct dsa_switch *ds, int port, struct net_device *br)
for (i = 0; i < QCA8K_NUM_PORTS; i++) {
if (dsa_is_cpu_port(ds, i))
continue;
- if (dsa_to_port(ds, i)->bridge_dev != br)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) != br)
continue;
/* Remove this port to the portvlan mask of the other ports
* in the bridge
diff --git a/drivers/net/dsa/rtl8366rb.c b/drivers/net/dsa/rtl8366rb.c
index 03deacd83e61..b6f277a04989 100644
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -1198,7 +1198,7 @@ rtl8366rb_port_bridge_join(struct dsa_switch *ds, int port,
if (i == port)
continue;
/* Not on this bridge */
- if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) != bridge)
continue;
/* Join this port to each other port on the bridge */
ret = regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(i),
@@ -1230,7 +1230,7 @@ rtl8366rb_port_bridge_leave(struct dsa_switch *ds, int port,
if (i == port)
continue;
/* Not on this bridge */
- if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) != bridge)
continue;
/* Remove this port from any other port on the bridge */
ret = regmap_update_bits(smi->map, RTL8366RB_PORT_ISO(i),
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 355b56cf94d8..5e03eda4c16f 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -118,13 +118,14 @@ static int sja1105_pvid_apply(struct sja1105_private *priv, int port, u16 pvid)
static int sja1105_commit_pvid(struct dsa_switch *ds, int port)
{
struct dsa_port *dp = dsa_to_port(ds, port);
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
struct sja1105_private *priv = ds->priv;
struct sja1105_vlan_lookup_entry *vlan;
bool drop_untagged = false;
int match, rc;
u16 pvid;
- if (dp->bridge_dev && br_vlan_enabled(dp->bridge_dev))
+ if (br && br_vlan_enabled(br))
pvid = priv->bridge_pvid[port];
else
pvid = priv->tag_8021q_pvid[port];
@@ -2004,7 +2005,7 @@ static int sja1105_bridge_member(struct dsa_switch *ds, int port,
*/
if (i == port)
continue;
- if (dsa_to_port(ds, i)->bridge_dev != br)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) != br)
continue;
sja1105_port_allow_traffic(l2_fwd, i, port, member);
sja1105_port_allow_traffic(l2_fwd, port, i, member);
@@ -2587,8 +2588,9 @@ static int sja1105_prechangeupper(struct dsa_switch *ds, int port,
if (netif_is_bridge_master(upper)) {
list_for_each_entry(dp, &dst->ports, list) {
- if (dp->bridge_dev && dp->bridge_dev != upper &&
- br_vlan_enabled(dp->bridge_dev)) {
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
+
+ if (br && br != upper && br_vlan_enabled(br)) {
NL_SET_ERR_MSG_MOD(extack,
"Only one VLAN-aware bridge is supported");
return -EBUSY;
diff --git a/drivers/net/dsa/xrs700x/xrs700x.c b/drivers/net/dsa/xrs700x/xrs700x.c
index 910fcb3b252b..7c2b6c32242d 100644
--- a/drivers/net/dsa/xrs700x/xrs700x.c
+++ b/drivers/net/dsa/xrs700x/xrs700x.c
@@ -513,14 +513,14 @@ static int xrs700x_bridge_common(struct dsa_switch *ds, int port,
cpu_mask |= BIT(i);
- if (dsa_to_port(ds, i)->bridge_dev == bridge)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) == bridge)
continue;
mask |= BIT(i);
}
for (i = 0; i < ds->num_ports; i++) {
- if (dsa_to_port(ds, i)->bridge_dev != bridge)
+ if (dsa_port_bridge_dev_get(dsa_to_port(ds, i)) != bridge)
continue;
/* 1 = Disable forwarding to the port */
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 970bc89a0062..81fd1821a0aa 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -599,6 +599,21 @@ struct net_device *dsa_port_to_bridge_port(const struct dsa_port *dp)
return dp->slave;
}
+static inline struct net_device *dsa_port_bridge_dev_get(struct dsa_port *dp)
+{
+ return dp->bridge_dev;
+}
+
+static inline unsigned int dsa_port_bridge_num_get(struct dsa_port *dp)
+{
+ return dp->bridge_num;
+}
+
+static inline bool dsa_port_bridge_same(struct dsa_port *a, struct dsa_port *b)
+{
+ return dsa_port_bridge_dev_get(a) == dsa_port_bridge_dev_get(b);
+}
+
typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
bool is_static, void *data);
struct dsa_switch_ops {
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 2a64c41813bf..62b719929ef4 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -278,7 +278,7 @@ static inline bool dsa_port_offloads_bridge(struct dsa_port *dp,
/* DSA ports connected to a bridge, and event was emitted
* for the bridge.
*/
- return dp->bridge_dev == bridge_dev;
+ return dsa_port_bridge_dev_get(dp) == bridge_dev;
}
/* Returns true if any port of this tree offloads the given net_device */
@@ -345,7 +345,7 @@ dsa_slave_to_master(const struct net_device *dev)
static inline struct sk_buff *dsa_untag_bridge_pvid(struct sk_buff *skb)
{
struct dsa_port *dp = dsa_slave_to_port(skb->dev);
- struct net_device *br = dp->bridge_dev;
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
struct net_device *dev = skb->dev;
struct net_device *upper_dev;
u16 vid, pvid, proto;
diff --git a/net/dsa/port.c b/net/dsa/port.c
index b7867746af15..aaa978ee165e 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -221,7 +221,7 @@ static int dsa_port_switchdev_sync_attrs(struct dsa_port *dp,
struct netlink_ext_ack *extack)
{
struct net_device *brport_dev = dsa_port_to_bridge_port(dp);
- struct net_device *br = dp->bridge_dev;
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
int err;
err = dsa_port_inherit_brport_flags(dp, extack);
@@ -372,7 +372,7 @@ int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br,
goto out_rollback;
tx_fwd_offload = dsa_port_bridge_tx_fwd_offload(dp, br,
- dp->bridge_num);
+ dsa_port_bridge_num_get(dp));
err = switchdev_bridge_port_offload(brport_dev, dev, dp,
&dsa_slave_switchdev_notifier,
@@ -415,13 +415,13 @@ void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br)
void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br)
{
+ unsigned int bridge_num = dsa_port_bridge_num_get(dp);
struct dsa_notifier_bridge_info info = {
.tree_index = dp->ds->dst->index,
.sw_index = dp->ds->index,
.port = dp->index,
.br = br,
};
- int bridge_num = dp->bridge_num;
int err;
/* Here the port is already unbridged. Reflect the current configuration
@@ -507,12 +507,15 @@ int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag,
void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag)
{
- if (dp->bridge_dev)
- dsa_port_pre_bridge_leave(dp, dp->bridge_dev);
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
+
+ if (br)
+ dsa_port_pre_bridge_leave(dp, br);
}
void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag)
{
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
struct dsa_notifier_lag_info info = {
.sw_index = dp->ds->index,
.port = dp->index,
@@ -526,8 +529,8 @@ void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag)
/* Port might have been part of a LAG that in turn was
* attached to a bridge.
*/
- if (dp->bridge_dev)
- dsa_port_bridge_leave(dp, dp->bridge_dev);
+ if (br)
+ dsa_port_bridge_leave(dp, br);
dp->lag_tx_enabled = false;
dp->lag_dev = NULL;
@@ -556,8 +559,8 @@ static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp,
* as long as we have 8021q uppers.
*/
if (vlan_filtering && dsa_port_is_user(dp)) {
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
struct net_device *upper_dev, *slave = dp->slave;
- struct net_device *br = dp->bridge_dev;
struct list_head *iter;
netdev_for_each_upper_dev_rcu(slave, upper_dev, iter) {
@@ -591,17 +594,15 @@ static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp,
* different setting than what is being requested.
*/
dsa_switch_for_each_port(other_dp, ds) {
- struct net_device *other_bridge;
+ struct net_device *other_br = dsa_port_bridge_dev_get(other_dp);
- other_bridge = other_dp->bridge_dev;
- if (!other_bridge)
- continue;
/* If it's the same bridge, it also has same
* vlan_filtering setting => no need to check
*/
- if (other_bridge == dp->bridge_dev)
+ if (!other_br || other_br == dsa_port_bridge_dev_get(dp))
continue;
- if (br_vlan_enabled(other_bridge) != vlan_filtering) {
+
+ if (br_vlan_enabled(other_br) != vlan_filtering) {
NL_SET_ERR_MSG_MOD(extack,
"VLAN filtering is a global setting");
return false;
@@ -685,13 +686,13 @@ int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering,
*/
bool dsa_port_skip_vlan_configuration(struct dsa_port *dp)
{
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
struct dsa_switch *ds = dp->ds;
- if (!dp->bridge_dev)
+ if (!br)
return false;
- return (!ds->configure_vlan_while_not_filtering &&
- !br_vlan_enabled(dp->bridge_dev));
+ return !ds->configure_vlan_while_not_filtering && !br_vlan_enabled(br);
}
int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock)
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index dbda0e0fbffa..ad873bb2f676 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -363,7 +363,7 @@ static int dsa_slave_vlan_add(struct net_device *dev,
/* Deny adding a bridge VLAN when there is already an 802.1Q upper with
* the same VID.
*/
- if (br_vlan_enabled(dp->bridge_dev)) {
+ if (br_vlan_enabled(dsa_port_bridge_dev_get(dp))) {
rcu_read_lock();
err = dsa_slave_vlan_check_for_8021q_uppers(dev, &vlan);
rcu_read_unlock();
@@ -1580,7 +1580,8 @@ static void dsa_bridge_mtu_normalization(struct dsa_port *dp)
if (other_dp->type != DSA_PORT_TYPE_USER)
continue;
- if (other_dp->bridge_dev != dp->bridge_dev)
+ if (dsa_port_bridge_dev_get(other_dp) !=
+ dsa_port_bridge_dev_get(dp))
continue;
if (!other_dp->ds->mtu_enforcement_ingress)
@@ -2229,7 +2230,7 @@ dsa_prevent_bridging_8021q_upper(struct net_device *dev,
struct netdev_notifier_changeupper_info *info)
{
struct netlink_ext_ack *ext_ack;
- struct net_device *slave;
+ struct net_device *slave, *br;
struct dsa_port *dp;
ext_ack = netdev_notifier_info_to_extack(&info->info);
@@ -2242,11 +2243,12 @@ dsa_prevent_bridging_8021q_upper(struct net_device *dev,
return NOTIFY_DONE;
dp = dsa_slave_to_port(slave);
- if (!dp->bridge_dev)
+ br = dsa_port_bridge_dev_get(dp);
+ if (!br)
return NOTIFY_DONE;
/* Deny enslaving a VLAN device into a VLAN-aware bridge */
- if (br_vlan_enabled(dp->bridge_dev) &&
+ if (br_vlan_enabled(br) &&
netif_is_bridge_master(info->upper_dev) && info->linking) {
NL_SET_ERR_MSG_MOD(ext_ack,
"Cannot enslave VLAN device into VLAN aware bridge");
@@ -2261,7 +2263,7 @@ dsa_slave_check_8021q_upper(struct net_device *dev,
struct netdev_notifier_changeupper_info *info)
{
struct dsa_port *dp = dsa_slave_to_port(dev);
- struct net_device *br = dp->bridge_dev;
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
struct bridge_vlan_info br_info;
struct netlink_ext_ack *extack;
int err = NOTIFY_DONE;
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index bb155a16d454..7993192fe769 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -151,11 +151,9 @@ static int dsa_switch_bridge_leave(struct dsa_switch *ds,
*/
if (change_vlan_filtering && ds->vlan_filtering_is_global) {
dsa_switch_for_each_port(dp, ds) {
- struct net_device *bridge_dev;
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
- bridge_dev = dp->bridge_dev;
-
- if (bridge_dev && br_vlan_enabled(bridge_dev)) {
+ if (br && br_vlan_enabled(br)) {
change_vlan_filtering = false;
break;
}
diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c
index df59f16436a5..e9d5e566973c 100644
--- a/net/dsa/tag_8021q.c
+++ b/net/dsa/tag_8021q.c
@@ -337,7 +337,7 @@ dsa_port_tag_8021q_bridge_match(struct dsa_port *dp,
return false;
if (dsa_port_is_user(dp))
- return dp->bridge_dev == info->br;
+ return dsa_port_bridge_dev_get(dp) == info->br;
return false;
}
diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c
index a7d70ae7cc97..8abf39dcac64 100644
--- a/net/dsa/tag_dsa.c
+++ b/net/dsa/tag_dsa.c
@@ -132,6 +132,7 @@ static struct sk_buff *dsa_xmit_ll(struct sk_buff *skb, struct net_device *dev,
u8 *dsa_header;
if (skb->offload_fwd_mark) {
+ unsigned int bridge_num = dsa_port_bridge_num_get(dp);
struct dsa_switch_tree *dst = dp->ds->dst;
cmd = DSA_CMD_FORWARD;
@@ -140,7 +141,7 @@ static struct sk_buff *dsa_xmit_ll(struct sk_buff *skb, struct net_device *dev,
* packets on behalf of a virtual switch device with an index
* past the physical switches.
*/
- tag_dev = dst->last_switch + dp->bridge_num;
+ tag_dev = dst->last_switch + bridge_num;
tag_port = 0;
} else {
cmd = DSA_CMD_FROM_CPU;
@@ -165,7 +166,7 @@ static struct sk_buff *dsa_xmit_ll(struct sk_buff *skb, struct net_device *dev,
dsa_header[2] &= ~0x10;
}
} else {
- struct net_device *br = dp->bridge_dev;
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
u16 vid;
vid = br ? MV88E6XXX_VID_BRIDGED : MV88E6XXX_VID_STANDALONE;
diff --git a/net/dsa/tag_ocelot.c b/net/dsa/tag_ocelot.c
index cd60b94fc175..462bfa1a17da 100644
--- a/net/dsa/tag_ocelot.c
+++ b/net/dsa/tag_ocelot.c
@@ -12,7 +12,7 @@
static void ocelot_xmit_get_vlan_info(struct sk_buff *skb, struct dsa_port *dp,
u64 *vlan_tci, u64 *tag_type)
{
- struct net_device *br = READ_ONCE(dp->bridge_dev);
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
struct vlan_ethhdr *hdr;
u16 proto, tci;
diff --git a/net/dsa/tag_sja1105.c b/net/dsa/tag_sja1105.c
index 262c8833a910..6c293c2a3008 100644
--- a/net/dsa/tag_sja1105.c
+++ b/net/dsa/tag_sja1105.c
@@ -159,14 +159,16 @@ static u16 sja1105_xmit_tpid(struct dsa_port *dp)
* need to find it.
*/
dsa_switch_for_each_port(other_dp, ds) {
- if (!other_dp->bridge_dev)
+ struct net_device *br = dsa_port_bridge_dev_get(other_dp);
+
+ if (!br)
continue;
/* Error is returned only if CONFIG_BRIDGE_VLAN_FILTERING,
* which seems pointless to handle, as our port cannot become
* VLAN-aware in that case.
*/
- br_vlan_get_proto(other_dp->bridge_dev, &proto);
+ br_vlan_get_proto(br, &proto);
return proto;
}
@@ -180,7 +182,8 @@ static struct sk_buff *sja1105_imprecise_xmit(struct sk_buff *skb,
struct net_device *netdev)
{
struct dsa_port *dp = dsa_slave_to_port(netdev);
- struct net_device *br = dp->bridge_dev;
+ unsigned int bridge_num = dsa_port_bridge_num_get(dp);
+ struct net_device *br = dsa_port_bridge_dev_get(dp);
u16 tx_vid;
/* If the port is under a VLAN-aware bridge, just slide the
@@ -196,7 +199,7 @@ static struct sk_buff *sja1105_imprecise_xmit(struct sk_buff *skb,
* TX VLAN that targets the bridge's entire broadcast domain,
* instead of just the specific port.
*/
- tx_vid = dsa_8021q_bridge_tx_fwd_offload_vid(dp->bridge_num);
+ tx_vid = dsa_8021q_bridge_tx_fwd_offload_vid(bridge_num);
return dsa_8021q_xmit(skb, netdev, sja1105_xmit_tpid(dp), tx_vid);
}
--
2.25.1
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