forked from Qortal/Brooklyn
2a709f28fa
* 0day explit mitigation * Memory corruption prevention * Privilege escalation prevention * Buffer over flow prevention * File System corruption defense * Thread escape prevention This may very well be the most intensive inclusion to BrooklynR. This will not be part of an x86 suite nor it will be released as tool kit. The security core toolkit will remain part of kernel base.
129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
/*
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* Copyright (C) ST-Ericsson AB 2010
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* Author: Sjur Brendeland
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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 <net/caif/caif_device.h>
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#include <linux/caif/caif_socket.h>
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#include <linux/if.h>
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#include <linux/net.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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* struct caif_connect_request - Request data for CAIF channel setup.
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* @protocol: Type of CAIF protocol to use (at, datagram etc)
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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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* @ifindex: kernel index of the interface.
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* @param: Connect Request parameters (CAIF_SO_REQ_PARAM).
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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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enum caif_protocol_type 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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int ifindex;
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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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* @ifindex: Link layer interface index used for this connection.
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* @headroom: Head room needed by CAIF protocol.
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* @tailroom: Tail room needed by CAIF protocol.
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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 net *net,
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struct caif_connect_request *conn_req,
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struct cflayer *client_layer, int *ifindex,
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int *headroom, int *tailroom);
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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 disconnected.
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*/
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int caif_disconnect_client(struct net *net, struct cflayer *client_layer);
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/**
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* caif_client_register_refcnt - register ref-count functions provided by client.
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*
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* @adapt_layer: Client layer using CAIF Stack.
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* @hold: Function provided by client layer increasing ref-count
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* @put: Function provided by client layer decreasing ref-count
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*
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* Client of the CAIF Stack must register functions for reference counting.
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* These functions are called by the CAIF Stack for every upstream packet,
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* and must therefore be implemented efficiently.
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*
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* Client should call caif_free_client when reference count degrease to zero.
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*/
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void caif_client_register_refcnt(struct cflayer *adapt_layer,
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void (*hold)(struct cflayer *lyr),
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void (*put)(struct cflayer *lyr));
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/**
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* caif_free_client - Free memory used to manage the client in 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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* This function must be called from client layer in order to free memory.
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* Caller must guarantee that no packets are in flight upstream when calling
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* this function.
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*/
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void caif_free_client(struct cflayer *adap_layer);
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/**
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* struct caif_enroll_dev - Enroll a net-device as a CAIF Link layer
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* @dev: Network device to enroll.
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* @caifdev: Configuration information from CAIF Link Layer
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* @link_support: Link layer support layer
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* @head_room: Head room needed by link support layer
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* @layer: Lowest layer in CAIF stack
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* @rcv_fun: Receive function for CAIF stack.
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*
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* This function enroll a CAIF link layer into CAIF Stack and
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* expects the interface to be able to handle CAIF payload.
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* The link_support layer is used to add any Link Layer specific
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* framing.
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*/
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void caif_enroll_dev(struct net_device *dev, struct caif_dev_common *caifdev,
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struct cflayer *link_support, int head_room,
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struct cflayer **layer, int (**rcv_func)(
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struct sk_buff *, struct net_device *,
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struct packet_type *, struct net_device *));
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#endif /* CAIF_DEV_H_ */
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