[PATCH v2 1/6] net: add promiscuous mode configuration support

[Sascha Hauer]

On Thu, Nov 03, 2022 at 02:13:46PM +0100, Oleksij Rempel wrote:
> This configuration is mostly needed for controllers attached to switches
> with different MAC address configurations.
> 
> Signed-off-by: Oleksij Rempel <o.rempel at pengutronix.de>
> ---
>  include/net.h |  3 +++
>  net/eth.c     | 10 ++++++++++
>  2 files changed, 13 insertions(+)
> 
> diff --git a/include/net.h b/include/net.h
> index 338033d698..96c2ed1d11 100644
> --- a/include/net.h
> +++ b/include/net.h
> @@ -49,6 +49,8 @@ struct eth_device {
>  				 int *length);
>  	void (*rx_monitor) (struct eth_device*, void *packet, int length);
>  	void (*tx_monitor) (struct eth_device*, void *packet, int length);
> +	/* Set promiscuous mode */
> +	int  (*set_promiscuous_mode) (struct eth_device*, bool enable);
>  
>  	struct eth_device *next;
>  	void *priv;
> @@ -113,6 +115,7 @@ int eth_send(struct eth_device *edev, void *packet, int length);	   /* Send a pa
>  int eth_rx(void);			/* Check for received packets	*/
>  void eth_open_all(void);
>  struct eth_device *of_find_eth_device_by_node(struct device_node *np);
> +int eth_set_promiscuous_mode(struct eth_device *edev, bool enable);
>  
>  /* associate a MAC address to a ethernet device. Should be called by
>   * board code for boards which store their MAC address at some unusual
> diff --git a/net/eth.c b/net/eth.c
> index 8f6ff7db3a..ad4b9d5987 100644
> --- a/net/eth.c
> +++ b/net/eth.c
> @@ -31,6 +31,16 @@ struct eth_ethaddr {
>  
>  static LIST_HEAD(ethaddr_list);
>  
> +int eth_set_promiscuous_mode(struct eth_device *edev, bool enable)
> +{
> +	int ret = 0;
> +
> +	if (edev->set_promiscuous_mode)
> +		ret = edev->set_promiscuous_mode(edev, enable);
> +
> +	return ret;
> +}

We should return an error when set_promiscuous_mode() is not
implemented.

Sascha

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