# Re: \[PATCH v5 net-next 1/9\] net: mscc: ocelot: serialize access to the MAC table

- From: Vladimir Oltean \<vladimir.oltean@nxp.com\>
- Date: 2021-09-25 19:13:22 
- List: netdev
- Page: https://ratatoskr.run/netdev/2021/09/1521671
- Thread: https://ratatoskr.run/netdev/2021/09/1520463/t.md

```text
On Fri, Sep 24, 2021 at 05:52:18PM +0800, Xiaoliang Yang wrote:
> From: Vladimir Oltean <vladimir.oltean@nxp.com>
> 
> DSA would like to remove the rtnl_lock from its
> SWITCHDEV_FDB_{ADD,DEL}_TO_DEVICE handlers, and the felix driver uses
> the same MAC table functions as ocelot.
> 
> This means that the MAC table functions will no longer be implicitly
> serialized with respect to each other by the rtnl_mutex, we need to add
> a dedicated lock in ocelot for the non-atomic operations of selecting a
> MAC table row, reading/writing what we want and polling for completion.
> 
> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
> ---

This patch needs your sign-off too.
```