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108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
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/*
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* \brief C interface to Genode's uplink session
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* \author Norman Feske
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* \date 2021-07-06
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*/
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/*
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* Copyright (C) 2006-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#ifndef _INCLUDE__GENODE_C_API__UPLINK_H_
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#define _INCLUDE__GENODE_C_API__UPLINK_H_
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#include <genode_c_api/base.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Initialize uplink handling
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*
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* \param sigh signal handler to be installed at the uplink connection
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*/
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void genode_uplink_init(struct genode_env *,
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struct genode_allocator *,
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struct genode_signal_handler *);
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/**
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* Wake up uplink server if progress can be made at the server side
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*
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* This function should be called whenever the component becomes idle.
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*/
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void genode_uplink_notify_peers(void);
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struct genode_uplink; /* definition is private to the implementation */
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/*********************
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** Uplink lifetime **
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*********************/
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struct genode_uplink_args
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{
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unsigned char mac_address[6];
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char const *label;
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};
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struct genode_uplink *genode_uplink_create(struct genode_uplink_args const *);
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void genode_uplink_destroy(struct genode_uplink *);
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/*************************************************
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** Transmit packets towards the uplink session **
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*************************************************/
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struct genode_uplink_tx_packet_context;
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/**
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* Callback called by 'genode_uplink_tx_packet' to provide the content
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*/
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typedef unsigned long (*genode_uplink_tx_packet_content_t)
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(struct genode_uplink_tx_packet_context *, char *dst, unsigned long dst_len);
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/**
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* Process packet transmission
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*
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* \return true if progress was made
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*/
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bool genode_uplink_tx_packet(struct genode_uplink *,
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genode_uplink_tx_packet_content_t,
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struct genode_uplink_tx_packet_context *);
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/*********************************************
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** Receive packets from the uplink session **
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*********************************************/
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struct genode_uplink_rx_context;
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typedef enum { GENODE_UPLINK_RX_REJECTED,
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GENODE_UPLINK_RX_ACCEPTED,
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GENODE_UPLINK_RX_RETRY } genode_uplink_rx_result_t;
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typedef genode_uplink_rx_result_t (*genode_uplink_rx_one_packet_t)
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(struct genode_uplink_rx_context *, char const *ptr, unsigned long len);
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/**
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* Process packet reception
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*
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* \return true if progress was made
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*/
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bool genode_uplink_rx(struct genode_uplink *,
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genode_uplink_rx_one_packet_t rx_one_packet,
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struct genode_uplink_rx_context *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _INCLUDE__GENODE_C_API__UPLINK_H_ */
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