netdev - Re: [PATCH net-next 08/12] iavf: Refactor iavf_mac

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Date:   Wed, 24 Nov 2021 15:49:31 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Tony Nguyen <anthony.l.nguyen@...el.com>
Cc:     davem@...emloft.net,
        Jedrzej Jagielski <jedrzej.jagielski@...el.com>,
        netdev@...r.kernel.org, sassmann@...hat.com,
        Sylwester Dziedziuch <sylwesterx.dziedziuch@...el.com>,
        Konrad Jankowski <konrad0.jankowski@...el.com>
Subject: Re: [PATCH net-next 08/12] iavf: Refactor iavf_mac_filter struct
 memory usage

On Wed, 24 Nov 2021 09:16:48 -0800 Tony Nguyen wrote:
> -	bool is_new_mac;	/* filter is new, wait for PF decision */
> -	bool remove;		/* filter needs to be removed */
> -	bool add;		/* filter needs to be added */
> +	struct {
> +		u8 is_new_mac:1;    /* filter is new, wait for PF decision */
> +		u8 remove:1;        /* filter needs to be removed */
> +		u8 add:1;           /* filter needs to be added */
> +		u8 is_primary:1;    /* filter is a default VF MAC */
> +		u8 padding:4;
> +	};

Why did you wrap it in a struct? Just curious.