netdev - Re: [PATCH net-next-2.6 02/13] net-caif: add CAIF header files

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Date:	Fri, 22 Jan 2010 08:51:59 +0100
From:	Marcel Holtmann <marcel@...tmann.org>
To:	sjur.brandeland@...ricsson.com
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	stefano.babic@...ic.homelinux.org, randy.dunlap@...cle.com
Subject: Re: [PATCH net-next-2.6 02/13] net-caif: add CAIF header files

Hi Sjur,

> +/**
> + * struct sockaddr_caif - the sockaddr structure for CAIF sockets.
> + * @u:			     Union of address data 'switched' by familty.
> + * @at:			     Applies when family = CAIFPROTO_AT.
> + * @at.type:		     Type of AT link to set up (enum caif_at_type).
> + * @util:		     Applies when family = CAIFPROTO_UTIL
> + * @util.service:	     Service name.
> + * @dgm:		     Applies when family = CAIFPROTO_DATAGRAM
> + * @dgm.connection_id:	     Datagram connection id.
> + * @dgm.nsapi:		     NSAPI of the PDP-Context.
> + * @rfm:		     Applies when family = CAIFPROTO_RFM
> + * @rfm.connection_id:       Connection ID for RFM.
> + * @rfm.volume:	     	     Volume to mount.
> + */
> +struct sockaddr_caif {
> +	sa_family_t  family;
> +	union {
> +		struct {
> +			u_int8_t  type;		/* type: enum caif_at_type */
> +		} at;				/* CAIFPROTO_AT */
> +		struct {
> +			char	  service[16];
> +		} util;				/* CAIFPROTO_UTIL */
> +		union {
> +			u_int32_t connection_id;
> +			u_int8_t  nsapi;
> +		} dgm;				/* CAIFPROTO_DATAGRAM(_LOOP)*/
> +		struct {
> +			u_int32_t connection_id;
> +			char	  volume[16];
> +		} rfm;				/* CAIFPROTO_RFM */
> +	} u;
> +};

as mentioned on the oFono mailing list, what is the right procedure to
select a local CAIF device for usage with doing bing(). The use case I
am thinking of is that you have multiple CAIF device attached to the
same system. Think of desktops with USB or even Dual-SIM phones. Before
we set the API in stone, we need to have a way o bind the socket to a
specific device. Maybe it is possible, but I am missing it.

Regards

Marcel


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