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Implement TX of S/W ACKs with ContikiMAC

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This commit is contained in:
George Oikonomou 2015-07-09 01:46:58 +01:00
parent ca50a2c6df
commit 315f6fe535
1 changed files with 51 additions and 5 deletions
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56
core/net/mac/contikimac/contikimac.c
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@ -195,6 +195,12 @@ static int we_are_receiving_burst = 0;
to a neighbor for which we have a phase lock. */
#define MAX_PHASE_STROBE_TIME RTIMER_ARCH_SECOND / 60
#ifdef CONTIKIMAC_CONF_SEND_SW_ACK
#define CONTIKIMAC_SEND_SW_ACK CONTIKIMAC_CONF_SEND_SW_ACK
#else
#define CONTIKIMAC_SEND_SW_ACK 0
#endif
#define ACK_LEN 3
#include <stdio.h>
@ -865,10 +871,26 @@ static void
input_packet(void)
{
static struct ctimer ct;
int duplicate = 0;
#if CONTIKIMAC_SEND_SW_ACK
int original_datalen;
uint8_t *original_dataptr;
original_datalen = packetbuf_datalen();
original_dataptr = packetbuf_dataptr();
#endif
if(!we_are_receiving_burst) {
off();
}
if(packetbuf_datalen() == ACK_LEN) {
/* Ignore ack packets */
PRINTF("ContikiMAC: ignored ack\n");
return;
}
/* printf("cycle_start 0x%02x 0x%02x\n", cycle_start, cycle_start % CYCLE_TIME);*/
if(packetbuf_totlen() > 0 && NETSTACK_FRAMER.parse() >= 0) {
@ -896,12 +918,13 @@ input_packet(void)
#if RDC_WITH_DUPLICATE_DETECTION
/* Check for duplicate packet. */
if(mac_sequence_is_duplicate()) {
duplicate = mac_sequence_is_duplicate();
if(duplicate) {
/* Drop the packet. */
/* printf("Drop duplicate ContikiMAC layer packet\n");*/
return;
PRINTF("contikimac: Drop duplicate\n");
} else {
mac_sequence_register_seqno();
}
mac_sequence_register_seqno();
#endif /* RDC_WITH_DUPLICATE_DETECTION */
#if CONTIKIMAC_CONF_COMPOWER
@ -919,7 +942,30 @@ input_packet(void)
#endif /* CONTIKIMAC_CONF_COMPOWER */
PRINTDEBUG("contikimac: data (%u)\n", packetbuf_datalen());
NETSTACK_MAC.input();
#if CONTIKIMAC_SEND_SW_ACK
{
frame802154_t info154;
frame802154_parse(original_dataptr, original_datalen, &info154);
if(info154.fcf.frame_type == FRAME802154_DATAFRAME &&
info154.fcf.ack_required != 0 &&
linkaddr_cmp((linkaddr_t *)&info154.dest_addr,
&linkaddr_node_addr)) {
uint8_t ackdata[ACK_LEN] = {0, 0, 0};
we_are_sending = 1;
ackdata[0] = FRAME802154_ACKFRAME;
ackdata[1] = 0;
ackdata[2] = info154.seq;
NETSTACK_RADIO.send(ackdata, ACK_LEN);
we_are_sending = 0;
}
}
#endif /* CONTIKIMAC_SEND_SW_ACK */
if(!duplicate) {
NETSTACK_MAC.input();
}
return;
} else {
PRINTDEBUG("contikimac: data not for us\n");