Re: [RFC Patch net-next v2 09/15] net: dsa: microchip: update fdb add/del/dump in ksz_common

From: Vladimir Oltean
Date: Mon Jun 13 2022 - 05:42:37 EST

On Mon, May 30, 2022 at 04:12:51PM +0530, Arun Ramadoss wrote:
> This patch makes the dsa_switch_hook for fdbs to use ksz_common.c file.
> And from ksz_common, individual switches fdb functions are called using
> the dev->dev_ops.
>
> Signed-off-by: Arun Ramadoss <arun.ramadoss@xxxxxxxxxxxxx>
> ---

I had to jump ahead and look at the other patches to see if you plan on
doing anything about the r_dyn_mac_table, r_sta_mac_table, w_sta_mac_table
dev_ops which are only implemented for ksz8. They become redundant when
you introduce new dev_ops for the entire FDB dump, add, del procedure.

I see those aren't touched - what's the plan there?

> drivers/net/dsa/microchip/ksz8795.c | 30 +++++++++++++++
> drivers/net/dsa/microchip/ksz9477.c | 28 +++++++-------
> drivers/net/dsa/microchip/ksz_common.c | 52 +++++++++++++++-----------
> drivers/net/dsa/microchip/ksz_common.h | 10 +++++
> 4 files changed, 84 insertions(+), 36 deletions(-)
>
> diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
> index abd28dc44eb5..528de481b319 100644
> --- a/drivers/net/dsa/microchip/ksz8795.c
> +++ b/drivers/net/dsa/microchip/ksz8795.c
> @@ -958,6 +958,35 @@ static void ksz8_flush_dyn_mac_table(struct ksz_device *dev, int port)
> }
> }
>
> +static int ksz8_fdb_dump(struct ksz_device *dev, int port,
> + dsa_fdb_dump_cb_t *cb, void *data)
> +{
> + int ret = 0;
> + u16 i = 0;
> + u16 entries = 0;
> + u8 timestamp = 0;
> + u8 fid;
> + u8 member;
> + struct alu_struct alu;
> +
> + do {
> + alu.is_static = false;
> + ret = dev->dev_ops->r_dyn_mac_table(dev, i, alu.mac, &fid,
> + &member, &timestamp,
> + &entries);
> + if (!ret && (member & BIT(port))) {
> + ret = cb(alu.mac, alu.fid, alu.is_static, data);
> + if (ret)
> + break;
> + }
> + i++;
> + } while (i < entries);
> + if (i >= entries)
> + ret = 0;
> +
> + return ret;
> +}
> +
> static int ksz8_mdb_add(struct ksz_device *dev, int port,
> const struct switchdev_obj_port_mdb *mdb,
> struct dsa_db db)
> @@ -1528,6 +1557,7 @@ static const struct ksz_dev_ops ksz8_dev_ops = {
> .r_mib_pkt = ksz8_r_mib_pkt,
> .freeze_mib = ksz8_freeze_mib,
> .port_init_cnt = ksz8_port_init_cnt,
> + .fdb_dump = ksz8_fdb_dump,
> .mdb_add = ksz8_mdb_add,
> .mdb_del = ksz8_mdb_del,
> .vlan_filtering = ksz8_port_vlan_filtering,
> diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c
> index 045856656466..d70e0c32b309 100644
> --- a/drivers/net/dsa/microchip/ksz9477.c
> +++ b/drivers/net/dsa/microchip/ksz9477.c
> @@ -457,11 +457,10 @@ static int ksz9477_port_vlan_del(struct ksz_device *dev, int port,
> return 0;
> }
>
> -static int ksz9477_port_fdb_add(struct dsa_switch *ds, int port,
> - const unsigned char *addr, u16 vid,
> - struct dsa_db db)
> +static int ksz9477_fdb_add(struct ksz_device *dev, int port,
> + const unsigned char *addr, u16 vid,
> + struct dsa_db db)
> {
> - struct ksz_device *dev = ds->priv;
> u32 alu_table[4];
> u32 data;
> int ret = 0;
> @@ -515,11 +514,10 @@ static int ksz9477_port_fdb_add(struct dsa_switch *ds, int port,
> return ret;
> }
>
> -static int ksz9477_port_fdb_del(struct dsa_switch *ds, int port,
> - const unsigned char *addr, u16 vid,
> - struct dsa_db db)
> +static int ksz9477_fdb_del(struct ksz_device *dev, int port,
> + const unsigned char *addr, u16 vid,
> + struct dsa_db db)
> {
> - struct ksz_device *dev = ds->priv;
> u32 alu_table[4];
> u32 data;
> int ret = 0;
> @@ -606,10 +604,9 @@ static void ksz9477_convert_alu(struct alu_struct *alu, u32 *alu_table)
> alu->mac[5] = alu_table[3] & 0xFF;
> }
>
> -static int ksz9477_port_fdb_dump(struct dsa_switch *ds, int port,
> - dsa_fdb_dump_cb_t *cb, void *data)
> +static int ksz9477_fdb_dump(struct ksz_device *dev, int port,
> + dsa_fdb_dump_cb_t *cb, void *data)
> {
> - struct ksz_device *dev = ds->priv;
> int ret = 0;
> u32 ksz_data;
> u32 alu_table[4];
> @@ -1315,9 +1312,9 @@ static const struct dsa_switch_ops ksz9477_switch_ops = {
> .port_vlan_filtering = ksz_port_vlan_filtering,
> .port_vlan_add = ksz_port_vlan_add,
> .port_vlan_del = ksz_port_vlan_del,
> - .port_fdb_dump = ksz9477_port_fdb_dump,
> - .port_fdb_add = ksz9477_port_fdb_add,
> - .port_fdb_del = ksz9477_port_fdb_del,
> + .port_fdb_dump = ksz_port_fdb_dump,
> + .port_fdb_add = ksz_port_fdb_add,
> + .port_fdb_del = ksz_port_fdb_del,
> .port_mdb_add = ksz_port_mdb_add,
> .port_mdb_del = ksz_port_mdb_del,
> .port_mirror_add = ksz_port_mirror_add,
> @@ -1403,6 +1400,9 @@ static const struct ksz_dev_ops ksz9477_dev_ops = {
> .mirror_del = ksz9477_port_mirror_del,
> .get_stp_reg = ksz9477_get_stp_reg,
> .get_caps = ksz9477_get_caps,
> + .fdb_dump = ksz9477_fdb_dump,
> + .fdb_add = ksz9477_fdb_add,
> + .fdb_del = ksz9477_fdb_del,
> .mdb_add = ksz9477_mdb_add,
> .mdb_del = ksz9477_mdb_del,
> .shutdown = ksz9477_reset_switch,
> diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
> index b9082952db0f..8f79ff1ac648 100644
> --- a/drivers/net/dsa/microchip/ksz_common.c
> +++ b/drivers/net/dsa/microchip/ksz_common.c
> @@ -765,32 +765,40 @@ void ksz_port_fast_age(struct dsa_switch *ds, int port)
> }
> EXPORT_SYMBOL_GPL(ksz_port_fast_age);
>
> +int ksz_port_fdb_add(struct dsa_switch *ds, int port,
> + const unsigned char *addr, u16 vid, struct dsa_db db)
> +{
> + struct ksz_device *dev = ds->priv;
> + int ret = -EOPNOTSUPP;
> +
> + if (dev->dev_ops->fdb_add)
> + ret = dev->dev_ops->fdb_add(dev, port, addr, vid, db);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(ksz_port_fdb_add);
> +
> +int ksz_port_fdb_del(struct dsa_switch *ds, int port,
> + const unsigned char *addr, u16 vid, struct dsa_db db)
> +{
> + struct ksz_device *dev = ds->priv;
> + int ret = -EOPNOTSUPP;
> +
> + if (dev->dev_ops->fdb_del)
> + ret = dev->dev_ops->fdb_del(dev, port, addr, vid, db);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(ksz_port_fdb_del);
> +
> int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb,
> void *data)
> {
> struct ksz_device *dev = ds->priv;
> - int ret = 0;
> - u16 i = 0;
> - u16 entries = 0;
> - u8 timestamp = 0;
> - u8 fid;
> - u8 member;
> - struct alu_struct alu;
> -
> - do {
> - alu.is_static = false;
> - ret = dev->dev_ops->r_dyn_mac_table(dev, i, alu.mac, &fid,
> - &member, &timestamp,
> - &entries);
> - if (!ret && (member & BIT(port))) {
> - ret = cb(alu.mac, alu.fid, alu.is_static, data);
> - if (ret)
> - break;
> - }
> - i++;
> - } while (i < entries);
> - if (i >= entries)
> - ret = 0;
> + int ret = -EOPNOTSUPP;
> +
> + if (dev->dev_ops->fdb_dump)
> + ret = dev->dev_ops->fdb_dump(dev, port, cb, data);
>
> return ret;
> }
> diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
> index 816581dd7f8e..133b1a257868 100644
> --- a/drivers/net/dsa/microchip/ksz_common.h
> +++ b/drivers/net/dsa/microchip/ksz_common.h
> @@ -192,6 +192,12 @@ struct ksz_dev_ops {
> bool ingress, struct netlink_ext_ack *extack);
> void (*mirror_del)(struct ksz_device *dev, int port,
> struct dsa_mall_mirror_tc_entry *mirror);
> + int (*fdb_add)(struct ksz_device *dev, int port,
> + const unsigned char *addr, u16 vid, struct dsa_db db);
> + int (*fdb_del)(struct ksz_device *dev, int port,
> + const unsigned char *addr, u16 vid, struct dsa_db db);
> + int (*fdb_dump)(struct ksz_device *dev, int port,
> + dsa_fdb_dump_cb_t *cb, void *data);
> int (*mdb_add)(struct ksz_device *dev, int port,
> const struct switchdev_obj_port_mdb *mdb,
> struct dsa_db db);
> @@ -239,6 +245,10 @@ void ksz_port_bridge_leave(struct dsa_switch *ds, int port,
> struct dsa_bridge bridge);
> void ksz_port_stp_state_set(struct dsa_switch *ds, int port, u8 state);
> void ksz_port_fast_age(struct dsa_switch *ds, int port);
> +int ksz_port_fdb_add(struct dsa_switch *ds, int port,
> + const unsigned char *addr, u16 vid, struct dsa_db db);
> +int ksz_port_fdb_del(struct dsa_switch *ds, int port,
> + const unsigned char *addr, u16 vid, struct dsa_db db);
> int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb,
> void *data);
> int ksz_port_mdb_add(struct dsa_switch *ds, int port,
> --
> 2.36.1
>