a752c7ab
 elopes
add first test an...
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/*
* Copyright (C) 2015 Freie Universitรคt Berlin
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @{
* @ingroup net_gnrc_netapi
* @file
* @brief This file contains a number of helper functions that provide
* some shortcuts for some always repeating code snippets when
* servicing the netapi interface
*
* @author Hauke Petersen <hauke.petersen@fu-berlin.de>
* @}
*/
#include "mbox.h"
#include "msg.h"
#include "net/gnrc/netreg.h"
#include "net/gnrc/pktbuf.h"
#include "net/gnrc/netapi.h"
#define ENABLE_DEBUG (0)
#include "debug.h"
/**
* @brief Unified function for getting and setting netapi options
*
* @param[in] pid PID of the targeted thread
* @param[in] type specify if option is to be set or get
* @param[in] opt option to set or get
* @param[in] data data to set or pointer to buffer for reading options
* @param[in] data_len size of the given buffer
*
* @return the value from the received ACK message
*/
static inline int _get_set(kernel_pid_t pid, uint16_t type,
netopt_t opt, uint16_t context,
void *data, size_t data_len)
{
msg_t cmd;
msg_t ack;
gnrc_netapi_opt_t o;
/* set netapi's option struct */
o.opt = opt;
o.context = context;
o.data = data;
o.data_len = data_len;
/* set outgoing message's fields */
cmd.type = type;
cmd.content.ptr = (void *)&o;
/* trigger the netapi */
msg_send_receive(&cmd, &ack, pid);
assert(ack.type == GNRC_NETAPI_MSG_TYPE_ACK);
/* return the ACK message's value */
return (int)ack.content.value;
}
static inline int _snd_rcv(kernel_pid_t pid, uint16_t type, gnrc_pktsnip_t *pkt)
{
msg_t msg;
/* set the outgoing message's fields */
msg.type = type;
msg.content.ptr = (void *)pkt;
/* send message */
int ret = msg_try_send(&msg, pid);
if (ret < 1) {
DEBUG("gnrc_netapi: dropped message to %" PRIkernel_pid " (%s)\n", pid,
(ret == 0) ? "receiver queue is full" : "invalid receiver");
}
return ret;
}
#ifdef MODULE_GNRC_NETAPI_MBOX
static inline int _snd_rcv_mbox(mbox_t *mbox, uint16_t type, gnrc_pktsnip_t *pkt)
{
msg_t msg;
/* set the outgoing message's fields */
msg.type = type;
msg.content.ptr = (void *)pkt;
/* send message */
int ret = mbox_try_put(mbox, &msg);
if (ret < 1) {
DEBUG("gnrc_netapi: dropped message to %p (was full)\n", mbox);
}
return ret;
}
#endif
int gnrc_netapi_dispatch(gnrc_nettype_t type, uint32_t demux_ctx,
uint16_t cmd, gnrc_pktsnip_t *pkt)
{
int numof = gnrc_netreg_num(type, demux_ctx);
if (numof != 0) {
gnrc_netreg_entry_t *sendto = gnrc_netreg_lookup(type, demux_ctx);
gnrc_pktbuf_hold(pkt, numof - 1);
while (sendto) {
#if defined(MODULE_GNRC_NETAPI_MBOX) || defined(MODULE_GNRC_NETAPI_CALLBACKS)
int release = 0;
switch (sendto->type) {
case GNRC_NETREG_TYPE_DEFAULT:
if (_snd_rcv(sendto->target.pid, cmd, pkt) < 1) {
/* unable to dispatch packet */
release = 1;
}
break;
#ifdef MODULE_GNRC_NETAPI_MBOX
case GNRC_NETREG_TYPE_MBOX:
if (_snd_rcv_mbox(sendto->target.mbox, cmd, pkt) < 1) {
/* unable to dispatch packet */
release = 1;
}
break;
#endif
#ifdef MODULE_GNRC_NETAPI_CALLBACKS
case GNRC_NETREG_TYPE_CB:
sendto->target.cbd->cb(cmd, pkt, sendto->target.cbd->ctx);
break;
#endif
default:
/* unknown dispatch type */
release = 1;
break;
}
if (release) {
gnrc_pktbuf_release(pkt);
}
#else
if (_snd_rcv(sendto->target.pid, cmd, pkt) < 1) {
/* unable to dispatch packet */
gnrc_pktbuf_release(pkt);
}
#endif
sendto = gnrc_netreg_getnext(sendto);
}
}
return numof;
}
int gnrc_netapi_send(kernel_pid_t pid, gnrc_pktsnip_t *pkt)
{
return _snd_rcv(pid, GNRC_NETAPI_MSG_TYPE_SND, pkt);
}
int gnrc_netapi_receive(kernel_pid_t pid, gnrc_pktsnip_t *pkt)
{
return _snd_rcv(pid, GNRC_NETAPI_MSG_TYPE_RCV, pkt);
}
int gnrc_netapi_get(kernel_pid_t pid, netopt_t opt, uint16_t context,
void *data, size_t data_len)
{
return _get_set(pid, GNRC_NETAPI_MSG_TYPE_GET, opt, context,
data, data_len);
}
int gnrc_netapi_set(kernel_pid_t pid, netopt_t opt, uint16_t context,
void *data, size_t data_len)
{
return _get_set(pid, GNRC_NETAPI_MSG_TYPE_SET, opt, context,
data, data_len);
}
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