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Purge neighbors that go over a configurable ETX limit. Increase the no-ACK penalty.

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This commit is contained in:
nvt-se 2010-03-17 15:08:46 +00:00
parent 4e0ceedc47
commit 1a9e00ab78
1 changed files with 17 additions and 8 deletions
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25
core/net/neighbor-info.c
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: neighbor-info.c,v 1.2 2010/03/12 13:23:50 nvt-se Exp $
* $Id: neighbor-info.c,v 1.3 2010/03/17 15:08:46 nvt-se Exp $
*/
/**
* \file
@ -48,11 +48,17 @@
#define PRINTF(...)
#endif /* DEBUG */
#ifndef ETX_CONF_LIMIT
#define ETX_LIMIT 10
#else
#define ETX_LIMIT ETX_CONF_LIMIT
#endif /* !ETX_CONF_LIMIT */
#define ETX_SCALE 100
#define ETX_ALPHA 60
#define ETX_FIRST_GUESS 1
#define ETX_COLLISION_PENALTY 5
#define ETX_NO_ACK_PENALTY 5
#define ETX_NO_ACK_PENALTY (ETX_LIMIT + 1)
/*---------------------------------------------------------------------------*/
NEIGHBOR_ATTRIBUTE(uint8_t, etx, NULL);
@ -76,10 +82,14 @@ update_etx(const rimeaddr_t *dest, int packet_etx)
PRINTF("neighbor-info: ETX changed from %d to %d (packet ETX = %d)\n",
recorded_etx, new_etx, packet_etx);
neighbor_attr_set_data(&etx, dest, &new_etx);
if(new_etx != recorded_etx && subscriber_callback != NULL) {
subscriber_callback(dest, 1, recorded_etx);
if(new_etx > ETX_LIMIT) {
neighbor_attr_remove_neighbor(dest);
subscriber_callback(dest, 0, new_etx);
} else {
neighbor_attr_set_data(&etx, dest, &new_etx);
if(new_etx != recorded_etx && subscriber_callback != NULL) {
subscriber_callback(dest, 1, new_etx);
}
}
}
/*---------------------------------------------------------------------------*/
@ -112,8 +122,6 @@ neighbor_info_packet_sent(int status, int numtx)
return;
}
add_neighbor(dest);
PRINTF("neighbor-info: packet sent to %d.%d, status=%d, numtx=%d\n",
dest->u8[sizeof(*dest) - 2], dest->u8[sizeof(*dest) - 1],
status, numtx);
@ -121,6 +129,7 @@ neighbor_info_packet_sent(int status, int numtx)
packet_etx = numtx;
switch(status) {
case MAC_TX_OK:
add_neighbor(dest);
break;
case MAC_TX_COLLISION:
packet_etx += ETX_COLLISION_PENALTY;