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fixed rank calculation bug in of-etx

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This commit is contained in:
joxe 2010-06-02 16:23:08 +00:00
parent f069320ca9
commit 941443878b
3 changed files with 23 additions and 14 deletions
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22
core/net/rpl/rpl-of-etx.c
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@ -32,7 +32,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: rpl-of-etx.c,v 1.2 2010/05/31 14:22:00 nvt-se Exp $
* $Id: rpl-of-etx.c,v 1.3 2010/06/02 16:23:11 joxe Exp $
*/
/**
* \file
@ -64,9 +64,9 @@ rpl_of_t rpl_of_etx = {
#define PATH_ETX_MIN 1
#define PATH_ETX_MAX 200
#define PARENT_SWITCH_ETX_THRESHOLD 0.5
#define INFINITY 255
#define INFINITY 0xffff
typedef unsigned char etx_t;
typedef unsigned int etx_t;
static etx_t min_path_etx = INFINITY;
@ -86,7 +86,8 @@ parent_state_callback(rpl_parent_t *parent, int known, int etx)
if(known) {
if(min_path_etx != INFINITY) {
dag->rank = min_path_etx + etx;
PRINTF("RPL: New path ETX: %u\n", (unsigned)(min_path_etx + etx));
PRINTF("RPL: New path ETX: %u min_path_etx=%u etx=%u\n",
(unsigned)(min_path_etx + etx), min_path_etx, etx);
}
} else {
if(RPL_PARENT_COUNT(dag) == 1) {
@ -103,15 +104,18 @@ increment_rank(rpl_rank_t rank, rpl_parent_t *parent)
PRINTF("RPL: OF1 increment rank\n");
if(parent->rank < min_path_etx) {
if(parent != NULL && parent->rank < min_path_etx) {
min_path_etx = parent->rank;
PRINTF("RPL: min_path_etx updated to:%u\n", min_path_etx);
}
new_rank = parent->rank + LINK_ETX_MAX;
/* calculate the rank based on the new rank information from DIO or
stored otherwise */
new_rank = rank + LINK_ETX_MAX;
if(new_rank < rank) {
return INFINITE_RANK;
}
/* if(new_rank < rank) { */
/* return INFINITE_RANK; */
/* } */
PRINTF("RPL: Path ETX %u\n", (unsigned)new_rank);