Re: [RFC net-next v2 5/5] net: phy: nxp-c45-tja11xx: implement mdo_insert_tx_tag

Sabrina Dubroca
2023-08-28T10:17:52Z

2023-08-24, 12:16:15 +0300, Radu Pirea (NXP OSS) wrote:
> Implement mdo_insert_tx_tag to insert the TLV header in the ethernet
> frame.
>
> If extscs parameter is set to 1, then the TLV header will contain the
> TX SC that will be used to encrypt the frame, otherwise the TX SC will
> be selected using the MAC source address.

In which case would a user choose not to use the SCI? Using the MAC
address is probably fine in basic setups, but having to fiddle with a
module parameter (so unloading and reloading the module, which means
losing network connectivity) to make things work when the setup
evolves is really not convenient.

Is there a drawback to always using the SCI?

--
Sabrina