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Bugfix: handle deferred transmissions correctly (don't count them)

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This commit is contained in:
adamdunkels 2010-03-09 13:20:08 +00:00
parent 79722b4247
commit 2c3d3e3d73
1 changed files with 46 additions and 15 deletions
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61
core/net/mac/csma.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: csma.c,v 1.11 2010/03/04 14:17:43 nvt-se Exp $
* $Id: csma.c,v 1.12 2010/03/09 13:20:08 adamdunkels Exp $
*/
/**
@ -54,7 +54,7 @@
#include <string.h>
#define DEBUG 0
#define DEBUG 1
#if DEBUG
#include <stdio.h>
#define PRINTF(...) printf(__VA_ARGS__)
@ -69,7 +69,7 @@ struct queued_packet {
mac_callback_t sent;
void *cptr;
uint8_t transmissions, max_transmissions;
uint8_t collisions;
uint8_t collisions, deferrals;
};
#define MAX_QUEUED_PACKETS 8
@ -95,12 +95,26 @@ packet_sent(void *ptr, int status, int num_transmissions)
mac_callback_t sent;
void *cptr;
int num_tx;
switch(status) {
case MAC_TX_OK:
case MAC_TX_NOACK:
q->transmissions++;
break;
case MAC_TX_COLLISION:
q->collisions++;
break;
case MAC_TX_DEFERRED:
q->deferrals++;
break;
}
sent = q->sent;
cptr = q->cptr;
num_tx = q->transmissions - q->collisions;
num_tx = q->transmissions - q->collisions - q->deferrals;
if(status != MAC_TX_OK) {
if(status == MAC_TX_COLLISION ||
status == MAC_TX_NOACK) {
switch(status) {
case MAC_TX_COLLISION:
PRINTF("csma: rexmit collision %d\n", q->transmissions);
@ -111,7 +125,7 @@ packet_sent(void *ptr, int status, int num_transmissions)
default:
PRINTF("csma: rexmit err %d, %d\n", status, q->transmissions);
}
time = NETSTACK_RDC.channel_check_interval();
if(time == 0) {
time = CLOCK_SECOND;
@ -127,7 +141,11 @@ packet_sent(void *ptr, int status, int num_transmissions)
mac_call_sent_callback(sent, cptr, status, num_tx);
}
} else {
PRINTF("csma: rexmit ok %d\n", q->transmissions);
if(status == MAC_TX_OK) {
PRINTF("csma: rexmit ok %d\n", q->transmissions);
} else {
PRINTF("csma: rexmit err %d %d\n", status, q->transmissions);
}
free_packet(q);
mac_call_sent_callback(sent, cptr, status, num_tx);
}
@ -139,7 +157,6 @@ retransmit_packet(void *ptr)
struct queued_packet *q = ptr;
queuebuf_to_packetbuf(q->buf);
q->transmissions++;
PRINTF("csma: resending number %d\n", q->transmissions);
NETSTACK_RDC.send(packet_sent, q);
}
@ -159,18 +176,31 @@ sent_packet(void *ptr, int status, int num_transmissions)
if(status != MAC_TX_OK) {
switch(status) {
case MAC_TX_COLLISION:
PRINTF("csma: collision\n");
PRINTF("csma 1: collision\n");
break;
case MAC_TX_NOACK:
PRINTF("csma: noack\n");
PRINTF("csma 1: noack\n");
break;
default:
PRINTF("csma: err %d\n", status);
PRINTF("csma 1: err %d\n", status);
}
} else {
PRINTF("csma: ok\n");
PRINTF("csma 1: ok\n");
}
switch(status) {
case MAC_TX_OK:
case MAC_TX_NOACK:
q->transmissions++;
break;
case MAC_TX_COLLISION:
q->collisions++;
break;
case MAC_TX_DEFERRED:
q->deferrals++;
break;
}
/* Check if we saw a collission, and if we have a queuebuf with the
packet available. Only retransmit unicast packets. Retransmit
only once, for now. */
@ -214,8 +244,9 @@ send_packet(mac_callback_t sent, void *ptr)
q->buf = queuebuf_new_from_packetbuf();
if(q != NULL) {
q->max_transmissions = packetbuf_attr(PACKETBUF_ATTR_MAX_MAC_REXMIT) + 1;
q->transmissions = 1;
q->transmissions = 0;
q->collisions = 0;
q->deferrals = 0;
q->sent = sent;
q->cptr = ptr;
NETSTACK_RDC.send(sent_packet, q);