Hans Schultz
2022-Jul-07 15:29 UTC
[Bridge] [PATCH v4 net-next 3/6] drivers: net: dsa: add locked fdb entry flag to drivers
Ignore locked fdb entries coming in on all drivers.
Signed-off-by: Hans Schultz <netdev at kapio-technology.com>
---
drivers/net/dsa/b53/b53_common.c | 5 +++++
drivers/net/dsa/b53/b53_priv.h | 1 +
drivers/net/dsa/hirschmann/hellcreek.c | 5 +++++
drivers/net/dsa/lan9303-core.c | 5 +++++
drivers/net/dsa/lantiq_gswip.c | 5 +++++
drivers/net/dsa/microchip/ksz9477.c | 5 +++++
drivers/net/dsa/mt7530.c | 5 +++++
drivers/net/dsa/mv88e6xxx/chip.c | 5 +++++
drivers/net/dsa/ocelot/felix.c | 5 +++++
drivers/net/dsa/qca8k.c | 5 +++++
drivers/net/dsa/sja1105/sja1105_main.c | 5 +++++
include/net/dsa.h | 1 +
net/dsa/switch.c | 4 ++--
13 files changed, 54 insertions(+), 2 deletions(-)
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index fbb32aa49b24..3567d4fcbaa7 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1688,11 +1688,16 @@ static int b53_arl_op(struct b53_device *dev, int op,
int port,
int b53_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct b53_device *priv = ds->priv;
int ret;
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
/* 5325 and 5365 require some more massaging, but could
* be supported eventually
*/
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 795cbffd5c2b..19501b76b9df 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -362,6 +362,7 @@ int b53_vlan_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan);
int b53_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db);
int b53_fdb_del(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
diff --git a/drivers/net/dsa/hirschmann/hellcreek.c
b/drivers/net/dsa/hirschmann/hellcreek.c
index ac1f3b3a7040..0125d901c988 100644
--- a/drivers/net/dsa/hirschmann/hellcreek.c
+++ b/drivers/net/dsa/hirschmann/hellcreek.c
@@ -829,12 +829,17 @@ static int hellcreek_fdb_get(struct hellcreek *hellcreek,
static int hellcreek_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct hellcreek_fdb_entry entry = { 0 };
struct hellcreek *hellcreek = ds->priv;
int ret;
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
dev_dbg(hellcreek->dev, "Add FDB entry for MAC=%pM\n", addr);
mutex_lock(&hellcreek->reg_lock);
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index e03ff1f267bb..426b9ea668da 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -1190,10 +1190,15 @@ static void lan9303_port_fast_age(struct dsa_switch *ds,
int port)
static int lan9303_port_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct lan9303 *chip = ds->priv;
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
dev_dbg(chip->dev, "%s(%d, %pM, %d)\n", __func__, port, addr,
vid);
if (vid)
return -EOPNOTSUPP;
diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index 8af4def38a98..4da7186935f4 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -1399,8 +1399,13 @@ static int gswip_port_fdb(struct dsa_switch *ds, int
port,
static int gswip_port_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
return gswip_port_fdb(ds, port, addr, vid, true);
}
diff --git a/drivers/net/dsa/microchip/ksz9477.c
b/drivers/net/dsa/microchip/ksz9477.c
index ab40b700cf1a..c177eb97a072 100644
--- a/drivers/net/dsa/microchip/ksz9477.c
+++ b/drivers/net/dsa/microchip/ksz9477.c
@@ -481,6 +481,7 @@ static int ksz9477_port_vlan_del(struct dsa_switch *ds, int
port,
static int ksz9477_port_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct ksz_device *dev = ds->priv;
@@ -488,6 +489,10 @@ static int ksz9477_port_fdb_add(struct dsa_switch *ds, int
port,
u32 data;
int ret = 0;
+ /* Ignore locked entries */
+ if (is_locked)
+ return ret;
+
mutex_lock(&dev->alu_mutex);
/* find any entry with mac & vid */
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 2b02d823d497..cbf922cf425e 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1356,12 +1356,17 @@ mt7530_port_bridge_leave(struct dsa_switch *ds, int
port,
static int
mt7530_port_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct mt7530_priv *priv = ds->priv;
int ret;
u8 port_mask = BIT(port);
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
mutex_lock(&priv->reg_mutex);
mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 5d2c57a7c708..d134153ef023 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2717,11 +2717,16 @@ static int mv88e6xxx_vlan_msti_set(struct dsa_switch
*ds,
static int mv88e6xxx_port_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct mv88e6xxx_chip *chip = ds->priv;
int err;
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
mv88e6xxx_reg_lock(chip);
err = mv88e6xxx_port_db_load_purge(chip, port, addr, vid,
MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC);
diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index 3e07dc39007a..00ba495a7ab5 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -695,12 +695,17 @@ static int felix_fdb_dump(struct dsa_switch *ds, int port,
static int felix_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct net_device *bridge_dev = felix_classify_db(db);
struct dsa_port *dp = dsa_to_port(ds, port);
struct ocelot *ocelot = ds->priv;
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
if (IS_ERR(bridge_dev))
return PTR_ERR(bridge_dev);
diff --git a/drivers/net/dsa/qca8k.c b/drivers/net/dsa/qca8k.c
index 2727d3169c25..6267e94af485 100644
--- a/drivers/net/dsa/qca8k.c
+++ b/drivers/net/dsa/qca8k.c
@@ -2369,11 +2369,16 @@ qca8k_port_fdb_insert(struct qca8k_priv *priv, const u8
*addr,
static int
qca8k_port_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
u16 port_mask = BIT(port);
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
return qca8k_port_fdb_insert(priv, addr, port_mask, vid);
}
diff --git a/drivers/net/dsa/sja1105/sja1105_main.c
b/drivers/net/dsa/sja1105/sja1105_main.c
index 72b6fc1932b5..9b5c2b56d06d 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -1802,10 +1802,15 @@ int sja1105pqrs_fdb_del(struct dsa_switch *ds, int port,
static int sja1105_fdb_add(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db)
{
struct sja1105_private *priv = ds->priv;
+ /* Ignore locked entries */
+ if (is_locked)
+ return 0;
+
if (!vid) {
switch (db.type) {
case DSA_DB_PORT:
diff --git a/include/net/dsa.h b/include/net/dsa.h
index a5a843b2d67d..ebae403ce734 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -1010,6 +1010,7 @@ struct dsa_switch_ops {
*/
int (*port_fdb_add)(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
+ bool is_locked,
struct dsa_db db);
int (*port_fdb_del)(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid,
diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index 32b1e7ac6373..ea3b9c1acb8c 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -243,7 +243,7 @@ static int dsa_port_do_fdb_add(struct dsa_port *dp, const
unsigned char *addr,
/* No need to bother with refcounting for user ports */
if (!(dsa_port_is_cpu(dp) || dsa_port_is_dsa(dp)))
- return ds->ops->port_fdb_add(ds, port, addr, vid, db);
+ return ds->ops->port_fdb_add(ds, port, addr, vid, is_locked, db);
mutex_lock(&dp->addr_lists_lock);
@@ -259,7 +259,7 @@ static int dsa_port_do_fdb_add(struct dsa_port *dp, const
unsigned char *addr,
goto out;
}
- err = ds->ops->port_fdb_add(ds, port, addr, vid, db);
+ err = ds->ops->port_fdb_add(ds, port, addr, vid, is_locked, db);
if (err) {
kfree(a);
goto out;
--
2.30.2
Vladimir Oltean
2022-Jul-08 08:49 UTC
[Bridge] [PATCH v4 net-next 3/6] drivers: net: dsa: add locked fdb entry flag to drivers
Hi Hans, On Thu, Jul 07, 2022 at 05:29:27PM +0200, Hans Schultz wrote:> Ignore locked fdb entries coming in on all drivers. > > Signed-off-by: Hans Schultz <netdev at kapio-technology.com> > ---A good patch should have a reason for the change in the commit message. This has no reason because there is no reason. Think about it, you've said it yourself in patch 1: | Only the kernel can set this FDB entry flag, while userspace can read | the flag and remove it by replacing or deleting the FDB entry. So if user space will never add locked FDB entries to the bridge, then FDB entries with is_locked=true are never transported using SWITCHDEV_FDB_ADD_TO_DEVICE to drivers, and so, there is no reason at all to pass is_locked to drivers, just for them to ignore something that won't appear. You just need this for SWITCHDEV_FDB_ADD_TO_BRIDGE, so please keep it only in those code paths, and remove it from net/dsa/slave.c as well.> drivers/net/dsa/b53/b53_common.c | 5 +++++ > drivers/net/dsa/b53/b53_priv.h | 1 + > drivers/net/dsa/hirschmann/hellcreek.c | 5 +++++ > drivers/net/dsa/lan9303-core.c | 5 +++++ > drivers/net/dsa/lantiq_gswip.c | 5 +++++ > drivers/net/dsa/microchip/ksz9477.c | 5 +++++ > drivers/net/dsa/mt7530.c | 5 +++++ > drivers/net/dsa/mv88e6xxx/chip.c | 5 +++++ > drivers/net/dsa/ocelot/felix.c | 5 +++++ > drivers/net/dsa/qca8k.c | 5 +++++ > drivers/net/dsa/sja1105/sja1105_main.c | 5 +++++ > include/net/dsa.h | 1 + > net/dsa/switch.c | 4 ++-- > 13 files changed, 54 insertions(+), 2 deletions(-)