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Subject[PATCH net-next 08/11] net: dsa: restore mdb dump
Date
The same dsa_fdb_dump_cb_t callback is used since there is no
distinction to do between FDB and MDB entries at this layer.

Implement mv88e6xxx_port_mdb_dump so that multicast addresses associated
to a switch port can be dumped.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
---
drivers/net/dsa/mv88e6xxx/chip.c | 33 +++++++++++++++++++++++++--------
include/net/dsa.h | 3 +++
2 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 918d8f0fe091..2ad32734b6f6 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1380,7 +1380,7 @@ static int mv88e6xxx_port_fdb_del(struct dsa_switch *ds, int port,
}

static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip,
- u16 fid, u16 vid, int port,
+ u16 fid, u16 vid, int port, bool mc,
dsa_fdb_dump_cb_t *cb, void *data)
{
struct mv88e6xxx_atu_entry addr;
@@ -1401,11 +1401,14 @@ static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip,
if (addr.trunk || (addr.portvec & BIT(port)) == 0)
continue;

- if (!is_unicast_ether_addr(addr.mac))
+ if ((is_unicast_ether_addr(addr.mac) && mc) ||
+ (is_multicast_ether_addr(addr.mac) && !mc))
continue;

- is_static = (addr.state ==
- MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC);
+ is_static = addr.state == mc ?
+ MV88E6XXX_G1_ATU_DATA_STATE_MC_STATIC :
+ MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC;
+
err = cb(addr.mac, vid, is_static, data);
if (err)
return err;
@@ -1415,7 +1418,7 @@ static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip,
}

static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
- dsa_fdb_dump_cb_t *cb, void *data)
+ bool mc, dsa_fdb_dump_cb_t *cb, void *data)
{
struct mv88e6xxx_vtu_entry vlan = {
.vid = chip->info->max_vid,
@@ -1428,7 +1431,7 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
if (err)
return err;

- err = mv88e6xxx_port_db_dump_fid(chip, fid, 0, port, cb, data);
+ err = mv88e6xxx_port_db_dump_fid(chip, fid, 0, port, mc, cb, data);
if (err)
return err;

@@ -1442,7 +1445,7 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
break;

err = mv88e6xxx_port_db_dump_fid(chip, vlan.fid, vlan.vid, port,
- cb, data);
+ mc, cb, data);
if (err)
return err;
} while (vlan.vid < chip->info->max_vid);
@@ -1457,7 +1460,7 @@ static int mv88e6xxx_port_fdb_dump(struct dsa_switch *ds, int port,
int err;

mutex_lock(&chip->reg_lock);
- err = mv88e6xxx_port_db_dump(chip, port, cb, data);
+ err = mv88e6xxx_port_db_dump(chip, port, false, cb, data);
mutex_unlock(&chip->reg_lock);

return err;
@@ -3777,6 +3780,19 @@ static int mv88e6xxx_port_mdb_del(struct dsa_switch *ds, int port,
return err;
}

+static int mv88e6xxx_port_mdb_dump(struct dsa_switch *ds, int port,
+ dsa_fdb_dump_cb_t *cb, void *data)
+{
+ struct mv88e6xxx_chip *chip = ds->priv;
+ int err;
+
+ mutex_lock(&chip->reg_lock);
+ err = mv88e6xxx_port_db_dump(chip, port, true, cb, data);
+ mutex_unlock(&chip->reg_lock);
+
+ return err;
+}
+
static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
.probe = mv88e6xxx_drv_probe,
.get_tag_protocol = mv88e6xxx_get_tag_protocol,
@@ -3810,6 +3826,7 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
.port_mdb_prepare = mv88e6xxx_port_mdb_prepare,
.port_mdb_add = mv88e6xxx_port_mdb_add,
.port_mdb_del = mv88e6xxx_port_mdb_del,
+ .port_mdb_dump = mv88e6xxx_port_mdb_dump,
.crosschip_bridge_join = mv88e6xxx_crosschip_bridge_join,
.crosschip_bridge_leave = mv88e6xxx_crosschip_bridge_leave,
};
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 4ef5d38755d9..1fd419031948 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -288,6 +288,7 @@ static inline u8 dsa_upstream_port(struct dsa_switch *ds)
return ds->rtable[dst->cpu_dp->ds->index];
}

+/* FDB (and MDB) dump callback */
typedef int dsa_fdb_dump_cb_t(const unsigned char *addr, u16 vid,
bool is_static, void *data);
struct dsa_switch_ops {
@@ -417,6 +418,8 @@ struct dsa_switch_ops {
struct switchdev_trans *trans);
int (*port_mdb_del)(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb);
+ int (*port_mdb_dump)(struct dsa_switch *ds, int port,
+ dsa_fdb_dump_cb_t *cb, void *data);
/*
* RXNFC
*/
--
2.14.0
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