netdev - Re: [PATCH 2/2] bna: Add Generic Netlink Interface

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Date:	Wed, 18 May 2011 14:00:05 +0200
From:	David Lamparter <equinox@...c24.net>
To:	Rasesh Mody <rmody@...cade.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	adapter_linux_open_src_team@...cade.com,
	Debashis Dutt <ddutt@...cade.com>
Subject: Re: [PATCH 2/2] bna: Add Generic Netlink Interface

On Tue, May 17, 2011 at 09:57:01PM -0700, Rasesh Mody wrote:
> This patch adds the generic netlink communication interface to BNA driver. The
> in-kernel generic netlink infrastructure can be used to collect hardware
> specific control information and control attributes. The driver makes use of
> the "doit" handler provided by the generic netlink layer to accomplish this.
[...]
> +struct bnad_genl_ioc_info {
> +	int		status;
> +	u16		bnad_num;
> +	u16		rsvd;
> +	char		serialnum[64];
> +	char		hwpath[BFA_STRING_32];
> +	char		adapter_hwpath[BFA_STRING_32];
> +	char		guid[BFA_ADAPTER_SYM_NAME_LEN*2];
> +	char		name[BFA_ADAPTER_SYM_NAME_LEN];
> +	char		port_name[BFA_ADAPTER_SYM_NAME_LEN];
> +	char		eth_name[BFA_ADAPTER_SYM_NAME_LEN];
> +	u64		rsvd1[4];
> +	mac_t		mac;
> +	mac_t		factory_mac;	/* Factory mac address */
> +	mac_t		current_mac;	/* Currently assigned mac address */
> +	enum bfa_ioc_type     ioc_type;
> +	u16		pvid;		/* Port vlan id */
> +	u16		rsvd2;
> +	u32		host;
> +	u32		bandwidth;	/* For PF support */
> +	u32		rsvd3;
> +};
> +
> +struct bnad_genl_ioc_attr {
> +	int		status;
> +	u16		bnad_num;
> +	u16		rsvd;
> +	struct bfa_ioc_attr  ioc_attr;
> +};

These things all look like they're better put into sysfs. Why would you
create a genl protocol just to query some presumably static attributes?


-David

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