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Added safeguard timer if the MAC layer would fail to call back after transmission.

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This commit is contained in:
adamdunkels 2011-01-09 21:13:20 +00:00
parent cea299d79a
commit 4e91d9303e
1 changed files with 15 additions and 20 deletions
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35
core/net/rime/collect.c
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@ -33,7 +33,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: collect.c,v 1.69 2010/12/18 22:12:53 dak664 Exp $
* $Id: collect.c,v 1.70 2011/01/09 21:13:20 adamdunkels Exp $
*/
/**
@ -214,7 +214,7 @@ struct {
/* Forward declarations. */
static void send_queued_packet(struct collect_conn *c);
static void retransmit_callback(void *ptr);
//static void retransmit_not_sent_callback(void *ptr); //Currently not used, avoid any compiler warning
static void retransmit_not_sent_callback(void *ptr);
static void set_keepalive_timer(struct collect_conn *c);
/*---------------------------------------------------------------------------*/
@ -338,7 +338,7 @@ update_parent(struct collect_conn *tc)
if(DRAW_TREE) {
printf("#A e=%d\n", collect_neighbor_link_estimate(best));
{
/* {
int i;
int etx = 0;
printf("#A l=");
@ -347,12 +347,12 @@ update_parent(struct collect_conn *tc)
etx += current->le.history[i];
}
printf("\n");
}
}*/
}
} else {
if(DRAW_TREE) {
printf("#A e=%d\n", collect_neighbor_link_estimate(current));
{
/* {
int i;
int etx = 0;
printf("#A l=");
@ -361,7 +361,7 @@ update_parent(struct collect_conn *tc)
etx += current->le.history[i];
}
printf("\n");
}
}*/
}
}
}
@ -487,19 +487,16 @@ send_packet(struct collect_conn *c, struct collect_neighbor *n)
clock_time_t time;
uint8_t rexmit_time_scaling;
PRINTF("Sending packet to %d.%d, %d transmissions\n",
n->addr.u8[0], n->addr.u8[1],
c->transmissions);
unicast_send(&c->unicast_conn, &n->addr);
/* Compute the retransmission timeout and set up the
retransmission timer. */
rexmit_time_scaling = c->transmissions / (MAX_MAC_REXMITS + 1);
/* if(rexmit_time_scaling > MAX_REXMIT_TIME_SCALING) {
rexmit_time_scaling = MAX_REXMIT_TIME_SCALING;
}
time = REXMIT_TIME << rexmit_time_scaling;
time = 3 * time / 2 + (random_rand() % (time / 4));*/
time = 3 * REXMIT_TIME / 4 + (random_rand() % (REXMIT_TIME / 4));
// printf("retransmission time %lu scaling %d\n", time, rexmit_time_scaling);
/* ctimer_set(&c->retransmission_timer, time,
retransmit_not_sent_callback, c);*/
/* If the MAC layer won't call us back, we'll set up the
retransmission timer with a high timeout, so that we can cancel
the transmission and send a new one. */
time = 16 * REXMIT_TIME;
ctimer_set(&c->retransmission_timer, time,
retransmit_not_sent_callback, c);
c->send_time = clock_time();
}
/*---------------------------------------------------------------------------*/
@ -1133,7 +1130,6 @@ node_packet_sent(struct unicast_conn *c, int status, int transmissions)
* MAC layer transmissions to the transmission count, and call the
* retransmit function.
*/
#if 0 //not currently used, avoid any compiler warning
static void
retransmit_not_sent_callback(void *ptr)
{
@ -1143,7 +1139,6 @@ retransmit_not_sent_callback(void *ptr)
c->transmissions += MAX_MAC_REXMITS + 1;
retransmit_callback(c);
}
#endif
/*---------------------------------------------------------------------------*/
/**
* This function is called from a ctimer that is setup when a packet