linux-kernel - Re: [PATCH v1 07/26] net: dsa: microchip: ksz8_r_dyn_mac

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Message-ID: <a071d537a85a0cbde34ca20c08fd6243ce7c367f.camel@microchip.com>
Date:   Tue, 29 Nov 2022 07:16:27 +0000
From:   <Arun.Ramadoss@...rochip.com>
To:     <olteanv@...il.com>, <UNGLinuxDriver@...rochip.com>,
        <vivien.didelot@...il.com>, <andrew@...n.ch>,
        <f.fainelli@...il.com>, <kuba@...nel.org>, <edumazet@...gle.com>,
        <pabeni@...hat.com>, <o.rempel@...gutronix.de>,
        <Woojung.Huh@...rochip.com>, <davem@...emloft.net>
CC:     <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>,
        <kernel@...gutronix.de>
Subject: Re: [PATCH v1 07/26] net: dsa: microchip: ksz8_r_dyn_mac_table():
 remove timestamp support

Hi Oleksij,

On Mon, 2022-11-28 at 12:59 +0100, Oleksij Rempel wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you
> know the content is safe
> 
> We do not use FDB timestamps. So, drop it.

If the FDB timestamps are not used/to be dropped, then do we need to
have patch 4  * net: dsa: microchip: ksz8: ksz8_fdb_dump: fix time
stamp extraction * which is to fix the offset.

> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
>  drivers/net/dsa/microchip/ksz8.h    | 2 +-
>  drivers/net/dsa/microchip/ksz8795.c | 7 ++-----
>  2 files changed, 3 insertions(+), 6 deletions(-)
> 
> 
> diff --git a/drivers/net/dsa/microchip/ksz8795.c
> b/drivers/net/dsa/microchip/ksz8795.c
> index e0530bc3bec0..d0cfe74d5b13 100644
> --- a/drivers/net/dsa/microchip/ksz8795.c
> +++ b/drivers/net/dsa/microchip/ksz8795.c
> @@ -395,7 +395,7 @@ static int ksz8_valid_dyn_entry(struct ksz_device
> *dev, u8 *data)
>  }
> 
>  int ksz8_r_dyn_mac_table(struct ksz_device *dev, u16 addr, u8
> *mac_addr,
> -                        u8 *fid, u8 *src_port, u8 *timestamp, u16
> *entries)
> +                        u8 *fid, u8 *src_port, u16 *entries)
>  {
>         u32 data_hi, data_lo;
>         const u8 *shifts;
> @@ -440,8 +440,6 @@ int ksz8_r_dyn_mac_table(struct ksz_device *dev,
> u16 addr, u8 *mac_addr,
>                         shifts[DYNAMIC_MAC_FID];
>                 *src_port = (data_hi &
> masks[DYNAMIC_MAC_TABLE_SRC_PORT]) >>
>                         shifts[DYNAMIC_MAC_SRC_PORT];
> -               *timestamp = (data_hi &
> masks[DYNAMIC_MAC_TABLE_TIMESTAMP]) >>
> -                       shifts[DYNAMIC_MAC_TIMESTAMP];

The macros DYNAMIC_MAC_TABLE_TIMESTAMP and DYNAMIC_MAC_TIMESTAMP needs
to be deleted in ksz8795_shifts/masks and ksz8863_shifts/masks
structure in ksz_common.c/h files since it is only in this function.

> 
>                 mac_addr[5] = (u8)data_lo;
>                 mac_addr[4] = (u8)(data_lo >> 8);
> @@ -956,14 +954,13 @@ int ksz8_fdb_dump(struct ksz_device *dev, int
> port,
> 
> --
> 2.30.2
>