net-caif: add CAIF core protocol stack header files
Add include files for the CAIF Core protocol stack. caif_layer.h - Defines the structure of the CAIF protocol layers cfcnfg.h - CAIF Configuration Module for services and link layers cfctrl.h - CAIF Control Protocol Layer cffrml.h - CAIF Framing Layer cfmuxl.h - CAIF Muxing Layer cfpkt.h - CAIF Packet layer (skb helper functions) cfserl.h - CAIF Serial Layer cfsrvl.h - CAIF Service Layer Signed-off-by: Sjur Braendeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sjur Braendeland
David S. Miller
parent
f671c54207
commit
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_LAYER_H_
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#define CAIF_LAYER_H_
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#include <linux/list.h>
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struct cflayer;
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struct cfpkt;
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struct cfpktq;
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struct caif_payload_info;
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struct caif_packet_funcs;
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#define CAIF_MAX_FRAMESIZE 4096
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#define CAIF_MAX_PAYLOAD_SIZE (4096 - 64)
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#define CAIF_NEEDED_HEADROOM (10)
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#define CAIF_NEEDED_TAILROOM (2)
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#define CAIF_LAYER_NAME_SZ 16
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#define CAIF_SUCCESS 1
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#define CAIF_FAILURE 0
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/**
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* caif_assert() - Assert function for CAIF.
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* @assert: expression to evaluate.
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*
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* This function will print a error message and a do WARN_ON if the
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* assertion failes. Normally this will do a stack up at the current location.
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*/
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#define caif_assert(assert) \
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do { \
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if (!(assert)) { \
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pr_err("caif:Assert detected:'%s'\n", #assert); \
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WARN_ON(!(assert)); \
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} \
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} while (0)
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/**
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* enum caif_ctrlcmd - CAIF Stack Control Signaling sent in layer.ctrlcmd().
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*
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* @CAIF_CTRLCMD_FLOW_OFF_IND: Flow Control is OFF, transmit function
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* should stop sending data
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*
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* @CAIF_CTRLCMD_FLOW_ON_IND: Flow Control is ON, transmit function
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* can start sending data
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*
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* @CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND: Remote end modem has decided to close
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* down channel
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*
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* @CAIF_CTRLCMD_INIT_RSP: Called initially when the layer below
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* has finished initialization
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*
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* @CAIF_CTRLCMD_DEINIT_RSP: Called when de-initialization is
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* complete
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*
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* @CAIF_CTRLCMD_INIT_FAIL_RSP: Called if initialization fails
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*
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* @_CAIF_CTRLCMD_PHYIF_FLOW_OFF_IND: CAIF Link layer temporarily cannot
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* send more packets.
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* @_CAIF_CTRLCMD_PHYIF_FLOW_ON_IND: Called if CAIF Link layer is able
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* to send packets again.
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* @_CAIF_CTRLCMD_PHYIF_DOWN_IND: Called if CAIF Link layer is going
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* down.
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*
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* These commands are sent upwards in the CAIF stack to the CAIF Client.
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* They are used for signaling originating from the modem or CAIF Link Layer.
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* These are either responses (*_RSP) or events (*_IND).
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*/
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enum caif_ctrlcmd {
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CAIF_CTRLCMD_FLOW_OFF_IND,
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CAIF_CTRLCMD_FLOW_ON_IND,
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CAIF_CTRLCMD_REMOTE_SHUTDOWN_IND,
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CAIF_CTRLCMD_INIT_RSP,
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CAIF_CTRLCMD_DEINIT_RSP,
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CAIF_CTRLCMD_INIT_FAIL_RSP,
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_CAIF_CTRLCMD_PHYIF_FLOW_OFF_IND,
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_CAIF_CTRLCMD_PHYIF_FLOW_ON_IND,
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_CAIF_CTRLCMD_PHYIF_DOWN_IND,
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};
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/**
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* enum caif_modemcmd - Modem Control Signaling, sent from CAIF Client
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* to the CAIF Link Layer or modem.
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*
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* @CAIF_MODEMCMD_FLOW_ON_REQ: Flow Control is ON, transmit function
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* can start sending data.
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*
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* @CAIF_MODEMCMD_FLOW_OFF_REQ: Flow Control is OFF, transmit function
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* should stop sending data.
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*
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* @_CAIF_MODEMCMD_PHYIF_USEFULL: Notify physical layer that it is in use
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*
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* @_CAIF_MODEMCMD_PHYIF_USELESS: Notify physical layer that it is
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* no longer in use.
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*
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* These are requests sent 'downwards' in the stack.
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* Flow ON, OFF can be indicated to the modem.
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*/
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enum caif_modemcmd {
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CAIF_MODEMCMD_FLOW_ON_REQ = 0,
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CAIF_MODEMCMD_FLOW_OFF_REQ = 1,
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_CAIF_MODEMCMD_PHYIF_USEFULL = 3,
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_CAIF_MODEMCMD_PHYIF_USELESS = 4
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};
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/**
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* enum caif_direction - CAIF Packet Direction.
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* Indicate if a packet is to be sent out or to be received in.
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* @CAIF_DIR_IN: Incoming packet received.
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* @CAIF_DIR_OUT: Outgoing packet to be transmitted.
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*/
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enum caif_direction {
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CAIF_DIR_IN = 0,
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CAIF_DIR_OUT = 1
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};
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/**
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* struct cflayer - CAIF Stack layer.
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* Defines the framework for the CAIF Core Stack.
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* @up: Pointer up to the layer above.
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* @dn: Pointer down to the layer below.
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* @node: List node used when layer participate in a list.
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* @receive: Packet receive function.
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* @transmit: Packet transmit funciton.
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* @ctrlcmd: Used for control signalling upwards in the stack.
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* @modemcmd: Used for control signaling downwards in the stack.
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* @prio: Priority of this layer.
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* @id: The identity of this layer
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* @type: The type of this layer
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* @name: Name of the layer.
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*
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* This structure defines the layered structure in CAIF.
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*
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* It defines CAIF layering structure, used by all CAIF Layers and the
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* layers interfacing CAIF.
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*
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* In order to integrate with CAIF an adaptation layer on top of the CAIF stack
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* and PHY layer below the CAIF stack
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* must be implemented. These layer must follow the design principles below.
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*
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* Principles for layering of protocol layers:
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* - All layers must use this structure. If embedding it, then place this
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* structure first in the layer specific structure.
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*
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* - Each layer should not depend on any others layer private data.
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*
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* - In order to send data upwards do
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* layer->up->receive(layer->up, packet);
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*
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* - In order to send data downwards do
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* layer->dn->transmit(layer->dn, info, packet);
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*/
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struct cflayer {
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struct cflayer *up;
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struct cflayer *dn;
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struct list_head node;
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/*
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* receive() - Receive Function.
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* Contract: Each layer must implement a receive function passing the
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* CAIF packets upwards in the stack.
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* Packet handling rules:
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* - The CAIF packet (cfpkt) cannot be accessed after
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* passing it to the next layer using up->receive().
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* - If parsing of the packet fails, the packet must be
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* destroyed and -1 returned from the function.
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* - If parsing succeeds (and above layers return OK) then
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* the function must return a value > 0.
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*
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* Returns result < 0 indicates an error, 0 or positive value
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* indicates success.
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*
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* @layr: Pointer to the current layer the receive function is
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* implemented for (this pointer).
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* @cfpkt: Pointer to CaifPacket to be handled.
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*/
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int (*receive)(struct cflayer *layr, struct cfpkt *cfpkt);
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/*
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* transmit() - Transmit Function.
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* Contract: Each layer must implement a transmit function passing the
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* CAIF packet downwards in the stack.
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* Packet handling rules:
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* - The CAIF packet (cfpkt) ownership is passed to the
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* transmit function. This means that the the packet
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* cannot be accessed after passing it to the below
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* layer using dn->transmit().
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*
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* - If transmit fails, however, the ownership is returned
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* to thecaller. The caller of "dn->transmit()" must
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* destroy or resend packet.
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*
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* - Return value less than zero means error, zero or
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* greater than zero means OK.
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*
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* result < 0 indicates an error, 0 or positive value
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* indicate success.
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*
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* @layr: Pointer to the current layer the receive function
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* isimplemented for (this pointer).
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* @cfpkt: Pointer to CaifPacket to be handled.
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*/
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int (*transmit) (struct cflayer *layr, struct cfpkt *cfpkt);
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/*
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* cttrlcmd() - Control Function upwards in CAIF Stack.
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* Used for signaling responses (CAIF_CTRLCMD_*_RSP)
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* and asynchronous events from the modem (CAIF_CTRLCMD_*_IND)
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*
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* @layr: Pointer to the current layer the receive function
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* is implemented for (this pointer).
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* @ctrl: Control Command.
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*/
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void (*ctrlcmd) (struct cflayer *layr, enum caif_ctrlcmd ctrl,
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int phyid);
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/*
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* modemctrl() - Control Function used for controlling the modem.
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* Used to signal down-wards in the CAIF stack.
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* Returns 0 on success, < 0 upon failure.
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*
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* @layr: Pointer to the current layer the receive function
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* is implemented for (this pointer).
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* @ctrl: Control Command.
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*/
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int (*modemcmd) (struct cflayer *layr, enum caif_modemcmd ctrl);
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unsigned short prio;
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unsigned int id;
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unsigned int type;
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char name[CAIF_LAYER_NAME_SZ];
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};
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/**
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* layer_set_up() - Set the up pointer for a specified layer.
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* @layr: Layer where up pointer shall be set.
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* @above: Layer above.
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*/
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#define layer_set_up(layr, above) ((layr)->up = (struct cflayer *)(above))
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/**
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* layer_set_dn() - Set the down pointer for a specified layer.
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* @layr: Layer where down pointer shall be set.
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* @below: Layer below.
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*/
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#define layer_set_dn(layr, below) ((layr)->dn = (struct cflayer *)(below))
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/**
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* struct dev_info - Physical Device info information about physical layer.
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* @dev: Pointer to native physical device.
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* @id: Physical ID of the physical connection used by the
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* logical CAIF connection. Used by service layers to
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* identify their physical id to Caif MUX (CFMUXL)so
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* that the MUX can add the correct physical ID to the
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* packet.
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*/
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struct dev_info {
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void *dev;
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unsigned int id;
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};
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/**
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* struct caif_payload_info - Payload information embedded in packet (sk_buff).
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*
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* @dev_info: Information about the receiving device.
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*
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* @hdr_len: Header length, used to align pay load on 32bit boundary.
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*
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* @channel_id: Channel ID of the logical CAIF connection.
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* Used by mux to insert channel id into the caif packet.
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*/
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struct caif_payload_info {
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struct dev_info *dev_info;
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unsigned short hdr_len;
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unsigned short channel_id;
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};
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#endif /* CAIF_LAYER_H_ */
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@ -0,0 +1,133 @@
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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 CFCNFG_H_
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#define CFCNFG_H_
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#include <linux/spinlock.h>
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#include <net/caif/caif_layer.h>
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#include <net/caif/cfctrl.h>
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struct cfcnfg;
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/**
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* enum cfcnfg_phy_type - Types of physical layers defined in CAIF Stack
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*
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* @CFPHYTYPE_FRAG: Fragmented frames physical interface.
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* @CFPHYTYPE_CAIF: Generic CAIF physical interface
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*/
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enum cfcnfg_phy_type {
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CFPHYTYPE_FRAG = 1,
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CFPHYTYPE_CAIF,
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CFPHYTYPE_MAX
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};
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/**
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* enum cfcnfg_phy_preference - Physical preference HW Abstraction
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*
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* @CFPHYPREF_UNSPECIFIED: Default physical interface
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*
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* @CFPHYPREF_LOW_LAT: Default physical interface for low-latency
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* traffic
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* @CFPHYPREF_HIGH_BW: Default physical interface for high-bandwidth
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* traffic
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* @CFPHYPREF_LOOP: TEST only Loopback interface simulating modem
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* responses.
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*
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*/
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enum cfcnfg_phy_preference {
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CFPHYPREF_UNSPECIFIED,
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CFPHYPREF_LOW_LAT,
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CFPHYPREF_HIGH_BW,
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CFPHYPREF_LOOP
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};
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/**
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* cfcnfg_create() - Create the CAIF configuration object.
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*/
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struct cfcnfg *cfcnfg_create(void);
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/**
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* cfcnfg_remove() - Remove the CFCNFG object
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* @cfg: config object
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*/
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void cfcnfg_remove(struct cfcnfg *cfg);
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/**
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* cfcnfg_add_phy_layer() - Adds a physical layer to the CAIF stack.
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* @cnfg: Pointer to a CAIF configuration object, created by
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* cfcnfg_create().
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* @phy_type: Specifies the type of physical interface, e.g.
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* CFPHYTYPE_FRAG.
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* @dev: Pointer to link layer device
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* @phy_layer: Specify the physical layer. The transmit function
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* MUST be set in the structure.
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* @phyid: The assigned physical ID for this layer, used in
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* cfcnfg_add_adapt_layer to specify PHY for the link.
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* @pref: The phy (link layer) preference.
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* @fcs: Specify if checksum is used in CAIF Framing Layer.
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* @stx: Specify if Start Of Frame eXtention is used.
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*/
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void
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cfcnfg_add_phy_layer(struct cfcnfg *cnfg, enum cfcnfg_phy_type phy_type,
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void *dev, struct cflayer *phy_layer, u16 *phyid,
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enum cfcnfg_phy_preference pref,
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bool fcs, bool stx);
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/**
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* cfcnfg_del_phy_layer - Deletes an phy layer from the CAIF stack.
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*
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* @cnfg: Pointer to a CAIF configuration object, created by
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* cfcnfg_create().
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* @phy_layer: Adaptation layer to be removed.
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*/
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int cfcnfg_del_phy_layer(struct cfcnfg *cnfg, struct cflayer *phy_layer);
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/**
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* cfcnfg_del_adapt_layer - Deletes an adaptation layer from the CAIF stack.
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*
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* @cnfg: Pointer to a CAIF configuration object, created by
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* cfcnfg_create().
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* @adap_layer: Adaptation layer to be removed.
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*/
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int cfcnfg_del_adapt_layer(struct cfcnfg *cnfg, struct cflayer *adap_layer);
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/**
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* cfcnfg_add_adaptation_layer - Add an adaptation layer to the CAIF stack.
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*
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* The adaptation Layer is where the interface to application or higher-level
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* driver functionality is implemented.
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*
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* @cnfg: Pointer to a CAIF configuration object, created by
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* cfcnfg_create().
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* @param: Link setup parameters.
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* @adap_layer: Specify the adaptation layer; the receive and
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* flow-control functions MUST be set in the structure.
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*
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*/
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int
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cfcnfg_add_adaptation_layer(struct cfcnfg *cnfg,
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struct cfctrl_link_param *param,
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struct cflayer *adap_layer);
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/**
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* cfcnfg_get_phyid() - Get physical ID, given type.
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* Returns one of the physical interfaces matching the given type.
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* Zero if no match is found.
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* @cnfg: Configuration object
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* @phy_pref: Caif Link Layer preference
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*/
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struct dev_info *cfcnfg_get_phyid(struct cfcnfg *cnfg,
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enum cfcnfg_phy_preference phy_pref);
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/**
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* cfcnfg_get_named() - Get the Physical Identifier of CAIF Link Layer
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* @cnfg: Configuration object
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* @name: Name of the Physical Layer (Caif Link Layer)
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*/
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int cfcnfg_get_named(struct cfcnfg *cnfg, char *name);
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#endif /* CFCNFG_H_ */
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@ -0,0 +1,138 @@
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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 CFCTRL_H_
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#define CFCTRL_H_
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#include <net/caif/caif_layer.h>
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#include <net/caif/cfsrvl.h>
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/* CAIF Control packet commands */
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enum cfctrl_cmd {
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CFCTRL_CMD_LINK_SETUP = 0,
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CFCTRL_CMD_LINK_DESTROY = 1,
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CFCTRL_CMD_LINK_ERR = 2,
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CFCTRL_CMD_ENUM = 3,
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CFCTRL_CMD_SLEEP = 4,
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CFCTRL_CMD_WAKE = 5,
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CFCTRL_CMD_LINK_RECONF = 6,
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CFCTRL_CMD_START_REASON = 7,
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CFCTRL_CMD_RADIO_SET = 8,
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CFCTRL_CMD_MODEM_SET = 9,
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CFCTRL_CMD_MASK = 0xf
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};
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/* Channel types */
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enum cfctrl_srv {
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CFCTRL_SRV_DECM = 0,
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CFCTRL_SRV_VEI = 1,
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CFCTRL_SRV_VIDEO = 2,
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CFCTRL_SRV_DBG = 3,
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CFCTRL_SRV_DATAGRAM = 4,
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CFCTRL_SRV_RFM = 5,
|
||||
CFCTRL_SRV_UTIL = 6,
|
||||
CFCTRL_SRV_MASK = 0xf
|
||||
};
|
||||
|
||||
#define CFCTRL_RSP_BIT 0x20
|
||||
#define CFCTRL_ERR_BIT 0x10
|
||||
|
||||
struct cfctrl_rsp {
|
||||
void (*linksetup_rsp)(struct cflayer *layer, u8 linkid,
|
||||
enum cfctrl_srv serv, u8 phyid,
|
||||
struct cflayer *adapt_layer);
|
||||
void (*linkdestroy_rsp)(struct cflayer *layer, u8 linkid,
|
||||
struct cflayer *client_layer);
|
||||
void (*linkerror_ind)(void);
|
||||
void (*enum_rsp)(void);
|
||||
void (*sleep_rsp)(void);
|
||||
void (*wake_rsp)(void);
|
||||
void (*restart_rsp)(void);
|
||||
void (*radioset_rsp)(void);
|
||||
void (*reject_rsp)(struct cflayer *layer, u8 linkid,
|
||||
struct cflayer *client_layer);;
|
||||
};
|
||||
|
||||
/* Link Setup Parameters for CAIF-Links. */
|
||||
struct cfctrl_link_param {
|
||||
enum cfctrl_srv linktype;/* (T3,T0) Type of Channel */
|
||||
u8 priority; /* (P4,P0) Priority of the channel */
|
||||
u8 phyid; /* (U2-U0) Physical interface to connect */
|
||||
u8 endpoint; /* (E1,E0) Endpoint for data channels */
|
||||
u8 chtype; /* (H1,H0) Channel-Type, applies to
|
||||
* VEI, DEBUG */
|
||||
union {
|
||||
struct {
|
||||
u8 connid; /* (D7,D0) Video LinkId */
|
||||
} video;
|
||||
|
||||
struct {
|
||||
u32 connid; /* (N31,Ngit0) Connection ID used
|
||||
* for Datagram */
|
||||
} datagram;
|
||||
|
||||
struct {
|
||||
u32 connid; /* Connection ID used for RFM */
|
||||
char volume[20]; /* Volume to mount for RFM */
|
||||
} rfm; /* Configuration for RFM */
|
||||
|
||||
struct {
|
||||
u16 fifosize_kb; /* Psock FIFO size in KB */
|
||||
u16 fifosize_bufs; /* Psock # signal buffers */
|
||||
char name[16]; /* Name of the PSOCK service */
|
||||
u8 params[255]; /* Link setup Parameters> */
|
||||
u16 paramlen; /* Length of Link Setup
|
||||
* Parameters */
|
||||
} utility; /* Configuration for Utility Links (Psock) */
|
||||
} u;
|
||||
};
|
||||
|
||||
/* This structure is used internally in CFCTRL */
|
||||
struct cfctrl_request_info {
|
||||
int sequence_no;
|
||||
enum cfctrl_cmd cmd;
|
||||
u8 channel_id;
|
||||
struct cfctrl_link_param param;
|
||||
struct cfctrl_request_info *next;
|
||||
struct cflayer *client_layer;
|
||||
};
|
||||
|
||||
struct cfctrl {
|
||||
struct cfsrvl serv;
|
||||
struct cfctrl_rsp res;
|
||||
atomic_t req_seq_no;
|
||||
atomic_t rsp_seq_no;
|
||||
struct cfctrl_request_info *first_req;
|
||||
/* Protects from simultaneous access to first_req list */
|
||||
spinlock_t info_list_lock;
|
||||
#ifndef CAIF_NO_LOOP
|
||||
u8 loop_linkid;
|
||||
int loop_linkused[256];
|
||||
/* Protects simultaneous access to loop_linkid and loop_linkused */
|
||||
spinlock_t loop_linkid_lock;
|
||||
#endif
|
||||
|
||||
};
|
||||
|
||||
void cfctrl_enum_req(struct cflayer *cfctrl, u8 physlinkid);
|
||||
void cfctrl_linkup_request(struct cflayer *cfctrl,
|
||||
struct cfctrl_link_param *param,
|
||||
struct cflayer *user_layer);
|
||||
int cfctrl_linkdown_req(struct cflayer *cfctrl, u8 linkid,
|
||||
struct cflayer *client);
|
||||
void cfctrl_sleep_req(struct cflayer *cfctrl);
|
||||
void cfctrl_wake_req(struct cflayer *cfctrl);
|
||||
void cfctrl_getstartreason_req(struct cflayer *cfctrl);
|
||||
struct cflayer *cfctrl_create(void);
|
||||
void cfctrl_set_dnlayer(struct cflayer *this, struct cflayer *dn);
|
||||
void cfctrl_set_uplayer(struct cflayer *this, struct cflayer *up);
|
||||
struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer);
|
||||
bool cfctrl_req_eq(struct cfctrl_request_info *r1,
|
||||
struct cfctrl_request_info *r2);
|
||||
void cfctrl_insert_req(struct cfctrl *ctrl,
|
||||
struct cfctrl_request_info *req);
|
||||
struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
|
||||
struct cfctrl_request_info *req);
|
||||
#endif /* CFCTRL_H_ */
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
/*
|
||||
* Copyright (C) ST-Ericsson AB 2010
|
||||
* Author: Sjur Brendeland/sjur.brandeland@stericsson.com
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
*/
|
||||
|
||||
#ifndef CFFRML_H_
|
||||
#define CFFRML_H_
|
||||
#include <net/caif/caif_layer.h>
|
||||
|
||||
struct cffrml;
|
||||
struct cflayer *cffrml_create(u16 phyid, bool DoFCS);
|
||||
void cffrml_set_uplayer(struct cflayer *this, struct cflayer *up);
|
||||
void cffrml_set_dnlayer(struct cflayer *this, struct cflayer *dn);
|
||||
|
||||
#endif /* CFFRML_H_ */
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
/*
|
||||
* Copyright (C) ST-Ericsson AB 2010
|
||||
* Author: Sjur Brendeland/sjur.brandeland@stericsson.com
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
*/
|
||||
|
||||
#ifndef CFMUXL_H_
|
||||
#define CFMUXL_H_
|
||||
#include <net/caif/caif_layer.h>
|
||||
|
||||
struct cfsrvl;
|
||||
struct cffrml;
|
||||
|
||||
struct cflayer *cfmuxl_create(void);
|
||||
int cfmuxl_set_uplayer(struct cflayer *layr, struct cflayer *up, u8 linkid);
|
||||
struct cflayer *cfmuxl_remove_dnlayer(struct cflayer *layr, u8 phyid);
|
||||
int cfmuxl_set_dnlayer(struct cflayer *layr, struct cflayer *up, u8 phyid);
|
||||
struct cflayer *cfmuxl_remove_uplayer(struct cflayer *layr, u8 linkid);
|
||||
bool cfmuxl_is_phy_inuse(struct cflayer *layr, u8 phyid);
|
||||
u8 cfmuxl_get_phyid(struct cflayer *layr, u8 channel_id);
|
||||
|
||||
#endif /* CFMUXL_H_ */
|
||||
|
|
@ -0,0 +1,274 @@
|
|||
/*
|
||||
* Copyright (C) ST-Ericsson AB 2010
|
||||
* Author: Sjur Brendeland/sjur.brandeland@stericsson.com
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
*/
|
||||
|
||||
#ifndef CFPKT_H_
|
||||
#define CFPKT_H_
|
||||
#include <net/caif/caif_layer.h>
|
||||
#include <linux/types.h>
|
||||
struct cfpkt;
|
||||
|
||||
/* Create a CAIF packet.
|
||||
* len: Length of packet to be created
|
||||
* @return New packet.
|
||||
*/
|
||||
struct cfpkt *cfpkt_create(u16 len);
|
||||
|
||||
/* Create a CAIF packet.
|
||||
* data Data to copy.
|
||||
* len Length of packet to be created
|
||||
* @return New packet.
|
||||
*/
|
||||
struct cfpkt *cfpkt_create_uplink(const unsigned char *data, unsigned int len);
|
||||
/*
|
||||
* Destroy a CAIF Packet.
|
||||
* pkt Packet to be destoyed.
|
||||
*/
|
||||
void cfpkt_destroy(struct cfpkt *pkt);
|
||||
|
||||
/*
|
||||
* Extract header from packet.
|
||||
*
|
||||
* pkt Packet to extract header data from.
|
||||
* data Pointer to copy the header data into.
|
||||
* len Length of head data to copy.
|
||||
* @return zero on success and error code upon failure
|
||||
*/
|
||||
int cfpkt_extr_head(struct cfpkt *pkt, void *data, u16 len);
|
||||
|
||||
/*
|
||||
* Peek header from packet.
|
||||
* Reads data from packet without changing packet.
|
||||
*
|
||||
* pkt Packet to extract header data from.
|
||||
* data Pointer to copy the header data into.
|
||||
* len Length of head data to copy.
|
||||
* @return zero on success and error code upon failure
|
||||
*/
|
||||
int cfpkt_peek_head(struct cfpkt *pkt, void *data, u16 len);
|
||||
|
||||
/*
|
||||
* Extract header from trailer (end of packet).
|
||||
*
|
||||
* pkt Packet to extract header data from.
|
||||
* data Pointer to copy the trailer data into.
|
||||
* len Length of header data to copy.
|
||||
* @return zero on success and error code upon failure
|
||||
*/
|
||||
int cfpkt_extr_trail(struct cfpkt *pkt, void *data, u16 len);
|
||||
|
||||
/*
|
||||
* Add header to packet.
|
||||
*
|
||||
*
|
||||
* pkt Packet to add header data to.
|
||||
* data Pointer to data to copy into the header.
|
||||
* len Length of header data to copy.
|
||||
* @return zero on success and error code upon failure
|
||||
*/
|
||||
int cfpkt_add_head(struct cfpkt *pkt, const void *data, u16 len);
|
||||
|
||||
/*
|
||||
* Add trailer to packet.
|
||||
*
|
||||
*
|
||||
* pkt Packet to add trailer data to.
|
||||
* data Pointer to data to copy into the trailer.
|
||||
* len Length of trailer data to copy.
|
||||
* @return zero on success and error code upon failure
|
||||
*/
|
||||
int cfpkt_add_trail(struct cfpkt *pkt, const void *data, u16 len);
|
||||
|
||||
/*
|
||||
* Pad trailer on packet.
|
||||
* Moves data pointer in packet, no content copied.
|
||||
*
|
||||
* pkt Packet in which to pad trailer.
|
||||
* len Length of padding to add.
|
||||
* @return zero on success and error code upon failure
|
||||
*/
|
||||
int cfpkt_pad_trail(struct cfpkt *pkt, u16 len);
|
||||
|
||||
/*
|
||||
* Add a single byte to packet body (tail).
|
||||
*
|
||||
* pkt Packet in which to add byte.
|
||||
* data Byte to add.
|
||||
* @return zero on success and error code upon failure
|
||||
*/
|
||||
int cfpkt_addbdy(struct cfpkt *pkt, const u8 data);
|
||||
|
||||
/*
|
||||
* Add a data to packet body (tail).
|
||||
*
|
||||
* pkt Packet in which to add data.
|
||||
* data Pointer to data to copy into the packet body.
|
||||
* len Length of data to add.
|
||||
* @return zero on success and error code upon failure
|
||||
*/
|
||||
int cfpkt_add_body(struct cfpkt *pkt, const void *data, u16 len);
|
||||
|
||||
/*
|
||||
* Checks whether there are more data to process in packet.
|
||||
* pkt Packet to check.
|
||||
* @return true if more data are available in packet false otherwise
|
||||
*/
|
||||
bool cfpkt_more(struct cfpkt *pkt);
|
||||
|
||||
/*
|
||||
* Checks whether the packet is erroneous,
|
||||
* i.e. if it has been attempted to extract more data than available in packet
|
||||
* or writing more data than has been allocated in cfpkt_create().
|
||||
* pkt Packet to check.
|
||||
* @return true on error false otherwise
|
||||
*/
|
||||
bool cfpkt_erroneous(struct cfpkt *pkt);
|
||||
|
||||
/*
|
||||
* Get the packet length.
|
||||
* pkt Packet to get length from.
|
||||
* @return Number of bytes in packet.
|
||||
*/
|
||||
u16 cfpkt_getlen(struct cfpkt *pkt);
|
||||
|
||||
/*
|
||||
* Set the packet length, by adjusting the trailer pointer according to length.
|
||||
* pkt Packet to set length.
|
||||
* len Packet length.
|
||||
* @return Number of bytes in packet.
|
||||
*/
|
||||
int cfpkt_setlen(struct cfpkt *pkt, u16 len);
|
||||
|
||||
/*
|
||||
* cfpkt_append - Appends a packet's data to another packet.
|
||||
* dstpkt: Packet to append data into, WILL BE FREED BY THIS FUNCTION
|
||||
* addpkt: Packet to be appended and automatically released,
|
||||
* WILL BE FREED BY THIS FUNCTION.
|
||||
* expectlen: Packet's expected total length. This should be considered
|
||||
* as a hint.
|
||||
* NB: Input packets will be destroyed after appending and cannot be used
|
||||
* after calling this function.
|
||||
* @return The new appended packet.
|
||||
*/
|
||||
struct cfpkt *cfpkt_append(struct cfpkt *dstpkt, struct cfpkt *addpkt,
|
||||
u16 expectlen);
|
||||
|
||||
/*
|
||||
* cfpkt_split - Split a packet into two packets at the specified split point.
|
||||
* pkt: Packet to be split (will contain the first part of the data on exit)
|
||||
* pos: Position to split packet in two parts.
|
||||
* @return The new packet, containing the second part of the data.
|
||||
*/
|
||||
struct cfpkt *cfpkt_split(struct cfpkt *pkt, u16 pos);
|
||||
|
||||
/*
|
||||
* Iteration function, iterates the packet buffers from start to end.
|
||||
*
|
||||
* Checksum iteration function used to iterate buffers
|
||||
* (we may have packets consisting of a chain of buffers)
|
||||
* pkt: Packet to calculate checksum for
|
||||
* iter_func: Function pointer to iteration function
|
||||
* chks: Checksum calculated so far.
|
||||
* buf: Pointer to the buffer to checksum
|
||||
* len: Length of buf.
|
||||
* data: Initial checksum value.
|
||||
* @return Checksum of buffer.
|
||||
*/
|
||||
|
||||
u16 cfpkt_iterate(struct cfpkt *pkt,
|
||||
u16 (*iter_func)(u16 chks, void *buf, u16 len),
|
||||
u16 data);
|
||||
|
||||
/* Append by giving user access to packet buffer
|
||||
* cfpkt Packet to append to
|
||||
* buf Buffer inside pkt that user shall copy data into
|
||||
* buflen Length of buffer and number of bytes added to packet
|
||||
* @return 0 on error, 1 on success
|
||||
*/
|
||||
int cfpkt_raw_append(struct cfpkt *cfpkt, void **buf, unsigned int buflen);
|
||||
|
||||
/* Extract by giving user access to packet buffer
|
||||
* cfpkt Packet to extract from
|
||||
* buf Buffer inside pkt that user shall copy data from
|
||||
* buflen Length of buffer and number of bytes removed from packet
|
||||
* @return 0 on error, 1 on success
|
||||
*/
|
||||
int cfpkt_raw_extract(struct cfpkt *cfpkt, void **buf, unsigned int buflen);
|
||||
|
||||
/* Map from a "native" packet (e.g. Linux Socket Buffer) to a CAIF packet.
|
||||
* dir - Direction indicating whether this packet is to be sent or received.
|
||||
* nativepkt - The native packet to be transformed to a CAIF packet
|
||||
* @return The mapped CAIF Packet CFPKT.
|
||||
*/
|
||||
struct cfpkt *cfpkt_fromnative(enum caif_direction dir, void *nativepkt);
|
||||
|
||||
/* Map from a CAIF packet to a "native" packet (e.g. Linux Socket Buffer).
|
||||
* pkt - The CAIF packet to be transformed into a "native" packet.
|
||||
* @return The native packet transformed from a CAIF packet.
|
||||
*/
|
||||
void *cfpkt_tonative(struct cfpkt *pkt);
|
||||
|
||||
/*
|
||||
* Insert a packet in the packet queue.
|
||||
* pktq Packet queue to insert into
|
||||
* pkt Packet to be inserted in queue
|
||||
* prio Priority of packet
|
||||
*/
|
||||
void cfpkt_queue(struct cfpktq *pktq, struct cfpkt *pkt,
|
||||
unsigned short prio);
|
||||
|
||||
/*
|
||||
* Remove a packet from the packet queue.
|
||||
* pktq Packet queue to fetch packets from.
|
||||
* @return Dequeued packet.
|
||||
*/
|
||||
struct cfpkt *cfpkt_dequeue(struct cfpktq *pktq);
|
||||
|
||||
/*
|
||||
* Peek into a packet from the packet queue.
|
||||
* pktq Packet queue to fetch packets from.
|
||||
* @return Peeked packet.
|
||||
*/
|
||||
struct cfpkt *cfpkt_qpeek(struct cfpktq *pktq);
|
||||
|
||||
/*
|
||||
* Initiates the packet queue.
|
||||
* @return Pointer to new packet queue.
|
||||
*/
|
||||
struct cfpktq *cfpktq_create(void);
|
||||
|
||||
/*
|
||||
* Get the number of packets in the queue.
|
||||
* pktq Packet queue to fetch count from.
|
||||
* @return Number of packets in queue.
|
||||
*/
|
||||
int cfpkt_qcount(struct cfpktq *pktq);
|
||||
|
||||
/*
|
||||
* Put content of packet into buffer for debuging purposes.
|
||||
* pkt Packet to copy data from
|
||||
* buf Buffer to copy data into
|
||||
* buflen Length of data to copy
|
||||
* @return Pointer to copied data
|
||||
*/
|
||||
char *cfpkt_log_pkt(struct cfpkt *pkt, char *buf, int buflen);
|
||||
|
||||
/*
|
||||
* Clones a packet and releases the original packet.
|
||||
* This is used for taking ownership of a packet e.g queueing.
|
||||
* pkt Packet to clone and release.
|
||||
* @return Cloned packet.
|
||||
*/
|
||||
struct cfpkt *cfpkt_clone_release(struct cfpkt *pkt);
|
||||
|
||||
|
||||
/*
|
||||
* Returns packet information for a packet.
|
||||
* pkt Packet to get info from;
|
||||
* @return Packet information
|
||||
*/
|
||||
struct caif_payload_info *cfpkt_info(struct cfpkt *pkt);
|
||||
/*! @} */
|
||||
#endif /* CFPKT_H_ */
|
||||
|
|
@ -0,0 +1,12 @@
|
|||
/*
|
||||
* Copyright (C) ST-Ericsson AB 2010
|
||||
* Author: Sjur Brendeland/sjur.brandeland@stericsson.com
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
*/
|
||||
|
||||
#ifndef CFSERL_H_
|
||||
#define CFSERL_H_
|
||||
#include <net/caif/caif_layer.h>
|
||||
|
||||
struct cflayer *cfserl_create(int type, int instance, bool use_stx);
|
||||
#endif /* CFSERL_H_ */
|
||||
|
|
@ -0,0 +1,34 @@
|
|||
/*
|
||||
* Copyright (C) ST-Ericsson AB 2010
|
||||
* Author: Sjur Brendeland/sjur.brandeland@stericsson.com
|
||||
* License terms: GNU General Public License (GPL) version 2
|
||||
*/
|
||||
|
||||
#ifndef CFSRVL_H_
|
||||
#define CFSRVL_H_
|
||||
#include <linux/list.h>
|
||||
#include <linux/stddef.h>
|
||||
#include <linux/types.h>
|
||||
struct cfsrvl {
|
||||
struct cflayer layer;
|
||||
bool open;
|
||||
bool phy_flow_on;
|
||||
bool modem_flow_on;
|
||||
struct dev_info dev_info;
|
||||
};
|
||||
|
||||
struct cflayer *cfvei_create(u8 linkid, struct dev_info *dev_info);
|
||||
struct cflayer *cfdgml_create(u8 linkid, struct dev_info *dev_info);
|
||||
struct cflayer *cfutill_create(u8 linkid, struct dev_info *dev_info);
|
||||
struct cflayer *cfvidl_create(u8 linkid, struct dev_info *dev_info);
|
||||
struct cflayer *cfrfml_create(u8 linkid, struct dev_info *dev_info);
|
||||
struct cflayer *cfdbgl_create(u8 linkid, struct dev_info *dev_info);
|
||||
bool cfsrvl_phyid_match(struct cflayer *layer, int phyid);
|
||||
void cfservl_destroy(struct cflayer *layer);
|
||||
void cfsrvl_init(struct cfsrvl *service,
|
||||
u8 channel_id,
|
||||
struct dev_info *dev_info);
|
||||
bool cfsrvl_ready(struct cfsrvl *service, int *err);
|
||||
u8 cfsrvl_getphyid(struct cflayer *layer);
|
||||
|
||||
#endif /* CFSRVL_H_ */
|
||||
Loading…
Reference in New Issue