net-caif: add CAIF Link layer device header files
Header files for CAIF Link layer net-device, and link-layer registration. Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Sjur Braendeland
David S. Miller
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09009f30de
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/*
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* Copyright (C) ST-Ericsson AB 2010
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* Author: Sjur Brendeland/ sjur.brandeland@stericsson.com
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* License terms: GNU General Public License (GPL) version 2
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*/
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#ifndef CAIF_DEV_H_
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#define CAIF_DEV_H_
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#include <net/caif/caif_layer.h>
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#include <net/caif/cfcnfg.h>
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#include <linux/caif/caif_socket.h>
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#include <linux/if.h>
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/**
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* struct caif_param - CAIF parameters.
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* @size: Length of data
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* @data: Binary Data Blob
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*/
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struct caif_param {
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u16 size;
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u8 data[256];
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};
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/**
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* caif_connect_request - Request data for CAIF channel setup.
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* @sockaddr: Socket address to connect.
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* @priority: Priority of the connection.
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* @link_selector: Link selector (high bandwidth or low latency)
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* @link_name: Name of the CAIF Link Layer to use.
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*
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* This struct is used when connecting a CAIF channel.
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* It contains all CAIF channel configuration options.
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*/
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struct caif_connect_request {
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int protocol;
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struct sockaddr_caif sockaddr;
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enum caif_channel_priority priority;
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enum caif_link_selector link_selector;
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char link_name[16];
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struct caif_param param;
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};
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/**
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* caif_connect_client - Connect a client to CAIF Core Stack.
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* @config: Channel setup parameters, specifying what address
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* to connect on the Modem.
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* @client_layer: User implementation of client layer. This layer
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* MUST have receive and control callback functions
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* implemented.
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*
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* This function connects a CAIF channel. The Client must implement
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* the struct cflayer. This layer represents the Client layer and holds
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* receive functions and control callback functions. Control callback
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* function will receive information about connect/disconnect responses,
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* flow control etc (see enum caif_control).
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* E.g. CAIF Socket will call this function for each socket it connects
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* and have one client_layer instance for each socket.
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*/
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int caif_connect_client(struct caif_connect_request *config,
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struct cflayer *client_layer);
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/**
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* caif_disconnect_client - Disconnects a client from the CAIF stack.
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*
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* @client_layer: Client layer to be removed.
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*/
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int caif_disconnect_client(struct cflayer *client_layer);
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/**
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* connect_req_to_link_param - Translate configuration parameters
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* from socket format to internal format.
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* @cnfg: Pointer to configuration handler
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* @con_req: Configuration parameters supplied in function
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* caif_connect_client
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* @channel_setup_param: Parameters supplied to the CAIF Core stack for
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* setting up channels.
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*
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*/
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int connect_req_to_link_param(struct cfcnfg *cnfg,
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struct caif_connect_request *con_req,
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struct cfctrl_link_param *channel_setup_param);
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/**
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* get_caif_conf() - Get the configuration handler.
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*/
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struct cfcnfg *get_caif_conf(void);
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#endif /* CAIF_DEV_H_ */
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/*
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* Copyright (C) ST-Ericsson AB 2010
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* Author: Sjur Brendeland/ sjur.brandeland@stericsson.com
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* License terms: GNU General Public License (GPL) version 2
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*/
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#ifndef CAIF_DEVICE_H_
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#define CAIF_DEVICE_H_
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#include <linux/kernel.h>
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#include <linux/net.h>
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#include <linux/netdevice.h>
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#include <linux/caif/caif_socket.h>
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#include <net/caif/caif_device.h>
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/**
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* struct caif_dev_common - data shared between CAIF drivers and stack.
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* @flowctrl: Flow Control callback function. This function is
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* supplied by CAIF Core Stack and is used by CAIF
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* Link Layer to send flow-stop to CAIF Core.
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* The flow information will be distributed to all
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* clients of CAIF.
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*
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* @link_select: Profile of device, either high-bandwidth or
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* low-latency. This member is set by CAIF Link
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* Layer Device in order to indicate if this device
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* is a high bandwidth or low latency device.
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*
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* @use_frag: CAIF Frames may be fragmented.
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* Is set by CAIF Link Layer in order to indicate if the
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* interface receives fragmented frames that must be
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* assembled by CAIF Core Layer.
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*
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* @use_fcs: Indicate if Frame CheckSum (fcs) is used.
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* Is set if the physical interface is
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* using Frame Checksum on the CAIF Frames.
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*
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* @use_stx: Indicate STart of frame eXtension (stx) in use.
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* Is set if the CAIF Link Layer expects
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* CAIF Frames to start with the STX byte.
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*
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* This structure is shared between the CAIF drivers and the CAIF stack.
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* It is used by the device to register its behavior.
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* CAIF Core layer must set the member flowctrl in order to supply
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* CAIF Link Layer with the flow control function.
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*
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*/
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struct caif_dev_common {
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void (*flowctrl)(struct net_device *net, int on);
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enum caif_link_selector link_select;
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int use_frag;
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int use_fcs;
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int use_stx;
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};
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#endif /* CAIF_DEVICE_H_ */
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