[RFC PATCH net-next 2/5] net: dsa: propagate flags down towards drivers

Hans J. Schultz
2023-01-17T20:52:42Z

Dynamic FDB flag needs to be propagated through the DSA layer to be
added to drivers.
Use a u16 for fdb flags for future use, so that other flags can also be
sent the same way without having to change function interfaces.

Signed-off-by: Hans J. Schultz <netdev@kapio-technology.com>
---
include/net/dsa.h | 2 ++
net/dsa/port.c | 28 ++++++++++++++++------------
net/dsa/port.h | 8 ++++----
net/dsa/slave.c | 17 +++++++++++++----
net/dsa/switch.c | 18 ++++++++++++------
net/dsa/switch.h | 1 +
6 files changed, 48 insertions(+), 26 deletions(-)

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 96086289aa9b..f697d56e52d5 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -818,6 +818,8 @@ static inline bool dsa_port_tree_same(const struct dsa_port *a,
return a->ds->dst == b->ds->dst;
}

+#define DSA_FDB_FLAG_DYNAMIC BIT(0)
+
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/port.c b/net/dsa/port.c
index 67ad1adec2a2..65b8c4470d59 100644
--- a/net/dsa/port.c
+++ b/net/dsa/port.c
@@ -976,12 +976,13 @@ int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu)
}

int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
- u16 vid)
+ u16 vid, u16 fdb_flags)
{
struct dsa_notifier_fdb_info info = {
.dp = dp,
.addr = addr,
.vid = vid,
+ .fdb_flags = fdb_flags,
.db = {
.type = DSA_DB_BRIDGE,
.bridge = *dp->bridge,
@@ -999,12 +1000,13 @@ int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
}

int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
- u16 vid)
+ u16 vid, u16 fdb_flags)
{
struct dsa_notifier_fdb_info info = {
.dp = dp,
.addr = addr,
.vid = vid,
+ .fdb_flags = fdb_flags,
.db = {
.type = DSA_DB_BRIDGE,
.bridge = *dp->bridge,
@@ -1019,12 +1021,13 @@ int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,

static int dsa_port_host_fdb_add(struct dsa_port *dp,
const unsigned char *addr, u16 vid,
- struct dsa_db db)
+ u16 fdb_flags, struct dsa_db db)
{
struct dsa_notifier_fdb_info info = {
.dp = dp,
.addr = addr,
.vid = vid,
+ .fdb_flags = fdb_flags,
.db = db,
};

@@ -1042,11 +1045,11 @@ int dsa_port_standalone_host_fdb_add(struct dsa_port *dp,
.dp = dp,
};

- return dsa_port_host_fdb_add(dp, addr, vid, db);
+ return dsa_port_host_fdb_add(dp, addr, vid, 0, db);
}

-int dsa_port_bridge_host_fdb_add(struct dsa_port *dp,
- const unsigned char *addr, u16 vid)
+int dsa_port_bridge_host_fdb_add(struct dsa_port *dp, const unsigned char *addr,
+ u16 vid, u16 fdb_flags)
{
struct net_device *master = dsa_port_to_master(dp);
struct dsa_db db = {
@@ -1065,17 +1068,18 @@ int dsa_port_bridge_host_fdb_add(struct dsa_port *dp,
return err;
}

- return dsa_port_host_fdb_add(dp, addr, vid, db);
+ return dsa_port_host_fdb_add(dp, addr, vid, fdb_flags, db);
}

static int dsa_port_host_fdb_del(struct dsa_port *dp,
const unsigned char *addr, u16 vid,
- struct dsa_db db)
+ u16 fdb_flags, struct dsa_db db)
{
struct dsa_notifier_fdb_info info = {
.dp = dp,
.addr = addr,
.vid = vid,
+ .fdb_flags = fdb_flags,
.db = db,
};

@@ -1093,11 +1097,11 @@ int dsa_port_standalone_host_fdb_del(struct dsa_port *dp,
.dp = dp,
};

- return dsa_port_host_fdb_del(dp, addr, vid, db);
+ return dsa_port_host_fdb_del(dp, addr, vid, 0, db);
}

-int dsa_port_bridge_host_fdb_del(struct dsa_port *dp,
- const unsigned char *addr, u16 vid)
+int dsa_port_bridge_host_fdb_del(struct dsa_port *dp, const unsigned char *addr,
+ u16 vid, u16 fdb_flags)
{
struct net_device *master = dsa_port_to_master(dp);
struct dsa_db db = {
@@ -1112,7 +1116,7 @@ int dsa_port_bridge_host_fdb_del(struct dsa_port *dp,
return err;
}

- return dsa_port_host_fdb_del(dp, addr, vid, db);
+ return dsa_port_host_fdb_del(dp, addr, vid, fdb_flags, db);
}

int dsa_port_lag_fdb_add(struct dsa_port *dp, const unsigned char *addr,
diff --git a/net/dsa/port.h b/net/dsa/port.h
index 9c218660d223..0a4f487e3c05 100644
--- a/net/dsa/port.h
+++ b/net/dsa/port.h
@@ -47,17 +47,17 @@ int dsa_port_vlan_msti(struct dsa_port *dp,
const struct switchdev_vlan_msti *msti);
int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu);
int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr,
- u16 vid);
+ u16 vid, u16 fdb_flags);
int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr,
- u16 vid);
+ u16 vid, u16 fdb_flags);
int dsa_port_standalone_host_fdb_add(struct dsa_port *dp,
const unsigned char *addr, u16 vid);
int dsa_port_standalone_host_fdb_del(struct dsa_port *dp,
const unsigned char *addr, u16 vid);
int dsa_port_bridge_host_fdb_add(struct dsa_port *dp, const unsigned char *addr,
- u16 vid);
+ u16 vid, u16 fdb_flags);
int dsa_port_bridge_host_fdb_del(struct dsa_port *dp, const unsigned char *addr,
- u16 vid);
+ u16 vid, u16 fdb_flags);
int dsa_port_lag_fdb_add(struct dsa_port *dp, const unsigned char *addr,
u16 vid);
int dsa_port_lag_fdb_del(struct dsa_port *dp, const unsigned char *addr,
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index aab79c355224..b6381baa1ff3 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -39,6 +39,7 @@ struct dsa_switchdev_event_work {
*/
unsigned char addr[ETH_ALEN];
u16 vid;
+ u16 fdb_flags;
bool host_addr;
};

@@ -3295,6 +3296,7 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)
container_of(work, struct dsa_switchdev_event_work, work);
const unsigned char *addr = switchdev_work->addr;
struct net_device *dev = switchdev_work->dev;
+ u16 fdb_flags = switchdev_work->fdb_flags;
u16 vid = switchdev_work->vid;
struct dsa_switch *ds;
struct dsa_port *dp;
@@ -3306,11 +3308,12 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)
switch (switchdev_work->event) {
case SWITCHDEV_FDB_ADD_TO_DEVICE:
if (switchdev_work->host_addr)
- err = dsa_port_bridge_host_fdb_add(dp, addr, vid);
+ err = dsa_port_bridge_host_fdb_add(dp, addr,
+ vid, fdb_flags);
else if (dp->lag)
err = dsa_port_lag_fdb_add(dp, addr, vid);
else
- err = dsa_port_fdb_add(dp, addr, vid);
+ err = dsa_port_fdb_add(dp, addr, vid, fdb_flags);
if (err) {
dev_err(ds->dev,
"port %d failed to add %pM vid %d to fdb: %d\n",
@@ -3322,11 +3325,12 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)

case SWITCHDEV_FDB_DEL_TO_DEVICE:
if (switchdev_work->host_addr)
- err = dsa_port_bridge_host_fdb_del(dp, addr, vid);
+ err = dsa_port_bridge_host_fdb_del(dp, addr,
+ vid, fdb_flags);
else if (dp->lag)
err = dsa_port_lag_fdb_del(dp, addr, vid);
else
- err = dsa_port_fdb_del(dp, addr, vid);
+ err = dsa_port_fdb_del(dp, addr, vid, fdb_flags);
if (err) {
dev_err(ds->dev,
"port %d failed to delete %pM vid %d from fdb: %d\n",
@@ -3364,6 +3368,7 @@ static int dsa_slave_fdb_event(struct net_device *dev,
struct dsa_port *dp = dsa_slave_to_port(dev);
bool host_addr = fdb_info->is_local;
struct dsa_switch *ds = dp->ds;
+ u16 fdb_flags = 0;

if (ctx && ctx != dp)
return 0;
@@ -3410,6 +3415,9 @@ static int dsa_slave_fdb_event(struct net_device *dev,
orig_dev->name, fdb_info->addr, fdb_info->vid,
host_addr ? " as host address" : "");

+ if (fdb_info->is_dyn)
+ fdb_flags |= DSA_FDB_FLAG_DYNAMIC;
+
INIT_WORK(&switchdev_work->work, dsa_slave_switchdev_event_work);
switchdev_work->event = event;
switchdev_work->dev = dev;
@@ -3418,6 +3426,7 @@ static int dsa_slave_fdb_event(struct net_device *dev,
ether_addr_copy(switchdev_work->addr, fdb_info->addr);
switchdev_work->vid = fdb_info->vid;
switchdev_work->host_addr = host_addr;
+ switchdev_work->fdb_flags = fdb_flags;

dsa_schedule_work(&switchdev_work->work);

diff --git a/net/dsa/switch.c b/net/dsa/switch.c
index d5bc4bb7310d..9b0d6ce0f7da 100644
--- a/net/dsa/switch.c
+++ b/net/dsa/switch.c
@@ -239,7 +239,7 @@ static int dsa_port_do_mdb_del(struct dsa_port *dp,
}

static int dsa_port_do_fdb_add(struct dsa_port *dp, const unsigned char *addr,
- u16 vid, struct dsa_db db)
+ u16 vid, u16 fdb_flags, struct dsa_db db)
{
struct dsa_switch *ds = dp->ds;
struct dsa_mac_addr *a;
@@ -283,7 +283,7 @@ static int dsa_port_do_fdb_add(struct dsa_port *dp, const unsigned char *addr,
}

static int dsa_port_do_fdb_del(struct dsa_port *dp, const unsigned char *addr,
- u16 vid, struct dsa_db db)
+ u16 vid, u16 fdb_flags, struct dsa_db db)
{
struct dsa_switch *ds = dp->ds;
struct dsa_mac_addr *a;
@@ -410,7 +410,9 @@ static int dsa_switch_host_fdb_add(struct dsa_switch *ds,
info->db);
} else {
err = dsa_port_do_fdb_add(dp, info->addr,
- info->vid, info->db);
+ info->vid,
+ info->fdb_flags,
+ info->db);
}
if (err)
break;
@@ -438,7 +440,9 @@ static int dsa_switch_host_fdb_del(struct dsa_switch *ds,
info->db);
} else {
err = dsa_port_do_fdb_del(dp, info->addr,
- info->vid, info->db);
+ info->vid,
+ info->fdb_flags,
+ info->db);
}
if (err)
break;
@@ -457,7 +461,8 @@ static int dsa_switch_fdb_add(struct dsa_switch *ds,
if (!ds->ops->port_fdb_add)
return -EOPNOTSUPP;

- return dsa_port_do_fdb_add(dp, info->addr, info->vid, info->db);
+ return dsa_port_do_fdb_add(dp, info->addr, info->vid,
+ info->fdb_flags, info->db);
}

static int dsa_switch_fdb_del(struct dsa_switch *ds,
@@ -469,7 +474,8 @@ static int dsa_switch_fdb_del(struct dsa_switch *ds,
if (!ds->ops->port_fdb_del)
return -EOPNOTSUPP;

- return dsa_port_do_fdb_del(dp, info->addr, info->vid, info->db);
+ return dsa_port_do_fdb_del(dp, info->addr, info->vid,
+ info->fdb_flags, info->db);
}

static int dsa_switch_lag_fdb_add(struct dsa_switch *ds,
diff --git a/net/dsa/switch.h b/net/dsa/switch.h
index 15e67b95eb6e..824ad7950785 100644
--- a/net/dsa/switch.h
+++ b/net/dsa/switch.h
@@ -55,6 +55,7 @@ struct dsa_notifier_fdb_info {
const struct dsa_port *dp;
const unsigned char *addr;
u16 vid;
+ u16 fdb_flags;
struct dsa_db db;
};

--
2.34.1