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/*
* Copyright (C) ST-Ericsson AB 2010
* Author: Sjur Brendeland/ sjur.brandeland@stericsson.com
* License terms: GNU General Public License (GPL) version 2
*/
#ifndef CAIF_DEV_H_
#define CAIF_DEV_H_
#include <net/caif/caif_layer.h>
#include <net/caif/cfcnfg.h>
#include <linux/caif/caif_socket.h>
#include <linux/if.h>
/**
* struct caif_param - CAIF parameters.
* @size: Length of data
* @data: Binary Data Blob
*/
struct caif_param {
u16 size;
u8 data[256];
};
/**
* struct caif_connect_request - Request data for CAIF channel setup.
* @protocol: Type of CAIF protocol to use (at, datagram etc)
* @sockaddr: Socket address to connect.
* @priority: Priority of the connection.
* @link_selector: Link selector (high bandwidth or low latency)
* @ifindex: kernel index of the interface.
* @param: Connect Request parameters (CAIF_SO_REQ_PARAM).
*
* This struct is used when connecting a CAIF channel.
* It contains all CAIF channel configuration options.
*/
struct caif_connect_request {
enum caif_protocol_type protocol;
struct sockaddr_caif sockaddr;
enum caif_channel_priority priority;
enum caif_link_selector link_selector;
int ifindex;
struct caif_param param;
};
/**
* caif_connect_client - Connect a client to CAIF Core Stack.
* @config: Channel setup parameters, specifying what address
* to connect on the Modem.
* @client_layer: User implementation of client layer. This layer
* MUST have receive and control callback functions
* implemented.
* @ifindex: Link layer interface index used for this connection.
* @headroom: Head room needed by CAIF protocol.
* @tailroom: Tail room needed by CAIF protocol.
*
* This function connects a CAIF channel. The Client must implement
* the struct cflayer. This layer represents the Client layer and holds
* receive functions and control callback functions. Control callback
* function will receive information about connect/disconnect responses,
* flow control etc (see enum caif_control).
* E.g. CAIF Socket will call this function for each socket it connects
* and have one client_layer instance for each socket.
*/
int caif_connect_client(struct caif_connect_request *conn_req,
struct cflayer *client_layer, int *ifindex,
int *headroom, int *tailroom);
/**
* caif_disconnect_client - Disconnects a client from the CAIF stack.
*
* @client_layer: Client layer to be removed.
*/
int caif_disconnect_client(struct cflayer *client_layer);
/**
* caif_release_client - Release adaptation layer reference to client.
*
* @client_layer: Client layer.
*
* Releases a client/adaptation layer use of the caif stack.
* This function must be used after caif_disconnect_client to
* decrease the reference count of the service layer.
*/
void caif_release_client(struct cflayer *client_layer);
/**
* connect_req_to_link_param - Translate configuration parameters
* from socket format to internal format.
* @cnfg: Pointer to configuration handler
* @con_req: Configuration parameters supplied in function
* caif_connect_client
* @channel_setup_param: Parameters supplied to the CAIF Core stack for
* setting up channels.
*
*/
int connect_req_to_link_param(struct cfcnfg *cnfg,
struct caif_connect_request *con_req,
struct cfctrl_link_param *channel_setup_param);
/**
* get_caif_conf() - Get the configuration handler.
*/
struct cfcnfg *get_caif_conf(void);
#endif /* CAIF_DEV_H_ */
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