mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 01:29:33 +00:00
Generic abc module
This commit is contained in:
parent
6930910cd3
commit
358259105e
103
core/net/rime/abc.c
Normal file
103
core/net/rime/abc.c
Normal file
@ -0,0 +1,103 @@
|
||||
/*
|
||||
* Copyright (c) 2004, Swedish Institute of Computer Science.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* Author: Adam Dunkels <adam@sics.se>
|
||||
*
|
||||
* $Id: abc.c,v 1.1 2007/03/13 13:01:48 adamdunkels Exp $
|
||||
*/
|
||||
|
||||
/**
|
||||
* \addtogroup rime
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* \file
|
||||
* Anonymous best-effort local area Broad Cast (abc)
|
||||
* \author
|
||||
* Adam Dunkels <adam@sics.se>
|
||||
*/
|
||||
|
||||
#include "contiki.h"
|
||||
#include "net/rime.h"
|
||||
|
||||
struct abc_hdr {
|
||||
u16_t channel;
|
||||
};
|
||||
|
||||
LIST(channels);
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
abc_setup(struct abc_conn *c, u16_t channel,
|
||||
const struct abc_ulayer *ulayer)
|
||||
{
|
||||
struct channel *chan;
|
||||
|
||||
c->channel = channel;
|
||||
c->u = ulayer;
|
||||
|
||||
list_add(channels, c);
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
int
|
||||
abc_send(struct abc_conn *c)
|
||||
{
|
||||
if(rimebuf_hdrextend(sizeof(struct abc_hdr))) {
|
||||
struct abc_hdr *hdr = rimebuf_hdrptr();
|
||||
|
||||
hdr->channel = c->channel;
|
||||
rimebuf_copy_reference();
|
||||
abc_arch_send(rimebuf_hdrptr(), rimebuf_totlen());
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
abc_input_packet(void)
|
||||
{
|
||||
struct abc_hdr *hdr;
|
||||
struct abc_conn *c;
|
||||
|
||||
hdr = rimebuf_dataptr();
|
||||
|
||||
if(rimebuf_hdrreduce(sizeof(struct abc_hdr))) {
|
||||
|
||||
for(c = list_head(channels); c != NULL; c = c->next) {
|
||||
if(c->channel == hdr->channel) {
|
||||
c->u->recv(c);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
|
||||
/** @} */
|
@ -28,7 +28,12 @@
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* $Id: abc.h,v 1.1 2007/02/28 16:38:51 adamdunkels Exp $
|
||||
* $Id: abc.h,v 1.2 2007/03/13 13:01:48 adamdunkels Exp $
|
||||
*/
|
||||
|
||||
/**
|
||||
* \addtogroup rime
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
@ -51,12 +56,54 @@ struct abc_ulayer {
|
||||
};
|
||||
|
||||
struct abc_conn {
|
||||
struct uip_udp_conn *c;
|
||||
struct abc_conn *next;
|
||||
u16_t channel;
|
||||
const struct abc_ulayer *u;
|
||||
};
|
||||
|
||||
/**
|
||||
* \brief Set up an anonymous best-effort broadcast connection
|
||||
* \param c A pointer to a struct abc_conn
|
||||
* \param channel The channel on which the connection will operate
|
||||
* \param u A struct abc_ulayer with function pointers to functions that will be called when a packet has been received
|
||||
*
|
||||
* This function sets up an abc connection on the
|
||||
* specified channel. The caller must have allocated the
|
||||
* memory for the struct abc_conn, usually by declaring it
|
||||
* as a static variable.
|
||||
*
|
||||
* The struct abc_ulayer pointer must point to a structure
|
||||
* containing a pointer to a function that will be called
|
||||
* when a packet arrives on the channel.
|
||||
*
|
||||
*/
|
||||
void abc_setup(struct abc_conn *c, u16_t channel,
|
||||
const struct abc_ulayer *u);
|
||||
|
||||
/**
|
||||
* \brief Send an anonymous best-effort broadcast packet
|
||||
* \param c The abc connection on which the packet should be sent
|
||||
* \retval Non-zero if the packet could be sent, zero otherwise
|
||||
*
|
||||
* This function sends an anonymous best-effort broadcast
|
||||
* packet. The packet must be present in the rimebuf
|
||||
* before this function is called.
|
||||
*
|
||||
* The parameter c must point to an abc connection that
|
||||
* must have previously been set up with abc_setup().
|
||||
*
|
||||
*/
|
||||
int abc_send(struct abc_conn *c);
|
||||
|
||||
/**
|
||||
* \brief Pass a packet to the abc layer
|
||||
*
|
||||
* This function is used by a device driver to pass an
|
||||
* incoming packet to the abc layer. The packet must be
|
||||
* present in the rimebuf buffer when this function is
|
||||
* called.
|
||||
*/
|
||||
void abc_input_packet(void);
|
||||
|
||||
#endif /* __BC_H__ */
|
||||
/** @} */
|
||||
|
Loading…
Reference in New Issue
Block a user