mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-07-02 07:29:38 +00:00
Bugfix: bump advertisements only when a parent changes, not because of an upstream parent change
This commit is contained in:
adamdunkels
parent
665eaba2df
commit
34cba78ca8
|
|
@ -33,7 +33,7 @@
|
|||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* $Id: collect.c,v 1.61 2010/10/12 19:51:28 oliverschmidt Exp $
|
||||
* $Id: collect.c,v 1.62 2010/10/19 07:34:29 adamdunkels Exp $
|
||||
*/
|
||||
|
||||
/**
|
||||
|
|
@ -128,9 +128,10 @@ struct ack_msg {
|
|||
#define MAX_ACK_MAC_REXMITS 3
|
||||
#define REXMIT_TIME CLOCK_SECOND * 1
|
||||
#define MAX_REXMIT_TIME_SCALING 2
|
||||
#define FORWARD_PACKET_LIFETIME (120 * (REXMIT_TIME))
|
||||
#define FORWARD_PACKET_LIFETIME_BASE (4 * (REXMIT_TIME))
|
||||
#define MAX_SENDING_QUEUE QUEUEBUF_NUM / 2
|
||||
#define KEEPALIVE_REXMITS 8
|
||||
#define MAX_REXMITS 31
|
||||
|
||||
MEMB(send_queue_memb, struct packetqueue_item, MAX_SENDING_QUEUE);
|
||||
|
||||
|
|
@ -251,6 +252,21 @@ rtmetric_compute(struct collect_conn *tc)
|
|||
return rtmetric;
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/**
|
||||
* This function is called when the route advertisements need to be
|
||||
* transmitted more rapidly.
|
||||
*
|
||||
*/
|
||||
static void
|
||||
bump_advertisement(struct collect_conn *c)
|
||||
{
|
||||
#if !COLLECT_ANNOUNCEMENTS
|
||||
neighbor_discovery_start(&c->neighbor_discovery_conn, c->rtmetric);
|
||||
#else
|
||||
announcement_bump(&c->announcement);
|
||||
#endif /* !COLLECT_ANNOUNCEMENTS */
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/**
|
||||
* This function is called to update the current parent node. The
|
||||
* parent may change if new routing information has been found, for
|
||||
|
|
@ -301,6 +317,7 @@ update_parent(struct collect_conn *tc)
|
|||
best->addr.u8[0], best->addr.u8[1]);
|
||||
rimeaddr_copy(&tc->parent, &best->addr);
|
||||
stats.foundroute++;
|
||||
bump_advertisement(tc);
|
||||
} else {
|
||||
if(collect_neighbor_rtmetric_link_estimate(best) +
|
||||
SIGNIFICANT_RTMETRIC_PARENT_CHANGE <
|
||||
|
|
@ -313,6 +330,12 @@ update_parent(struct collect_conn *tc)
|
|||
collect_neighbor_rtmetric(current));
|
||||
rimeaddr_copy(&tc->parent, &best->addr);
|
||||
stats.newparent++;
|
||||
/* Since we now have a significantly better or worse rtmetric than
|
||||
we had before, we let our neighbors know this quickly. */
|
||||
PRINTF("update_rtmetric: new_rtmetric %d + %d < old_rtmetric %d\n",
|
||||
new_rtmetric, SIGNIFICANT_RTMETRIC_PARENT_CHANGE, old_rtmetric);
|
||||
bump_advertisement(tc);
|
||||
|
||||
if(DRAW_TREE) {
|
||||
printf("#A e=%d\n", collect_neighbor_link_estimate(best));
|
||||
{
|
||||
|
|
@ -362,21 +385,6 @@ update_parent(struct collect_conn *tc)
|
|||
}
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/**
|
||||
* This function is called when the route advertisements need to be
|
||||
* transmitted more rapidly.
|
||||
*
|
||||
*/
|
||||
static void
|
||||
bump_advertisement(struct collect_conn *c)
|
||||
{
|
||||
#if !COLLECT_ANNOUNCEMENTS
|
||||
neighbor_discovery_start(&c->neighbor_discovery_conn, c->rtmetric);
|
||||
#else
|
||||
announcement_bump(&c->announcement);
|
||||
#endif /* !COLLECT_ANNOUNCEMENTS */
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/**
|
||||
* This function is called whenever there is a chance that the routing
|
||||
* metric has changed. The function goes through the list of neighbors
|
||||
|
|
@ -426,21 +434,11 @@ update_rtmetric(struct collect_conn *tc)
|
|||
neighbor_discovery_set_val(&tc->neighbor_discovery_conn, tc->rtmetric);
|
||||
#endif /* COLLECT_ANNOUNCEMENTS */
|
||||
|
||||
/* If we now have a significantly better or worse rtmetric than
|
||||
we had before, what we need to make sure that our neighbors
|
||||
find out about this quickly. */
|
||||
if((new_rtmetric < old_rtmetric - SIGNIFICANT_RTMETRIC_PARENT_CHANGE) &&
|
||||
(old_rtmetric > SIGNIFICANT_RTMETRIC_PARENT_CHANGE)) {
|
||||
PRINTF("update_rtmetric: new_rtmetric %d + %d < old_rtmetric %d\n",
|
||||
new_rtmetric, SIGNIFICANT_RTMETRIC_PARENT_CHANGE, old_rtmetric);
|
||||
bump_advertisement(tc);
|
||||
}
|
||||
}
|
||||
|
||||
PRINTF("%d.%d: new rtmetric %d\n",
|
||||
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
|
||||
tc->rtmetric);
|
||||
|
||||
|
||||
/* We got a new, working, route we send any queued packets we may have. */
|
||||
if(old_rtmetric == RTMETRIC_MAX && new_rtmetric != RTMETRIC_MAX) {
|
||||
PRINTF("Sending queued packet because rtmetric was max\n");
|
||||
|
|
@ -452,7 +450,6 @@ update_rtmetric(struct collect_conn *tc)
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
/*---------------------------------------------------------------------------*/
|
||||
static int
|
||||
|
|
@ -478,7 +475,7 @@ enqueue_dummy_packet(struct collect_conn *c, int rexmits)
|
|||
n = collect_neighbor_list_find(&c->neighbor_list, &c->parent);
|
||||
if(n != NULL) {
|
||||
return packetqueue_enqueue_packetbuf(&c->send_queue,
|
||||
FORWARD_PACKET_LIFETIME,
|
||||
FORWARD_PACKET_LIFETIME_BASE * rexmits,
|
||||
c);
|
||||
}
|
||||
return 0;
|
||||
|
|
@ -998,7 +995,9 @@ node_packet_received(struct unicast_conn *c, const rimeaddr_t *from)
|
|||
queue. */
|
||||
|
||||
if(packetqueue_enqueue_packetbuf(&tc->send_queue,
|
||||
FORWARD_PACKET_LIFETIME, tc)) {
|
||||
FORWARD_PACKET_LIFETIME_BASE *
|
||||
packetbuf_attr(PACKETBUF_ATTR_MAX_REXMIT),
|
||||
tc)) {
|
||||
send_ack(tc, &ack_to, ackflags);
|
||||
send_queued_packet(tc);
|
||||
} else {
|
||||
|
|
@ -1165,7 +1164,7 @@ received_announcement(struct announcement *a, const rimeaddr_t *from,
|
|||
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
|
||||
from->u8[0], from->u8[1], value);
|
||||
}
|
||||
if(value == RTMETRIC_MAX) {
|
||||
if(value == RTMETRIC_MAX && tc->rtmetric != RTMETRIC_MAX) {
|
||||
bump_advertisement(tc);
|
||||
}
|
||||
} else {
|
||||
|
|
@ -1335,7 +1334,11 @@ collect_send(struct collect_conn *tc, int rexmits)
|
|||
packetbuf_set_addr(PACKETBUF_ADDR_ESENDER, &rimeaddr_node_addr);
|
||||
packetbuf_set_attr(PACKETBUF_ATTR_HOPS, 1);
|
||||
packetbuf_set_attr(PACKETBUF_ATTR_TTL, MAX_HOPLIM);
|
||||
packetbuf_set_attr(PACKETBUF_ATTR_MAX_REXMIT, rexmits);
|
||||
if(rexmits > MAX_REXMITS) {
|
||||
packetbuf_set_attr(PACKETBUF_ATTR_MAX_REXMIT, MAX_REXMITS);
|
||||
} else {
|
||||
packetbuf_set_attr(PACKETBUF_ATTR_MAX_REXMIT, rexmits);
|
||||
}
|
||||
|
||||
PRINTF("%d.%d: originating packet %d, max_rexmits %d\n",
|
||||
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
|
||||
|
|
@ -1362,7 +1365,8 @@ collect_send(struct collect_conn *tc, int rexmits)
|
|||
n->addr.u8[0], n->addr.u8[1]);
|
||||
|
||||
if(packetqueue_enqueue_packetbuf(&tc->send_queue,
|
||||
FORWARD_PACKET_LIFETIME,
|
||||
FORWARD_PACKET_LIFETIME_BASE *
|
||||
packetbuf_attr(PACKETBUF_ATTR_MAX_REXMIT),
|
||||
tc)) {
|
||||
send_queued_packet(tc);
|
||||
return 1;
|
||||
|
|
@ -1387,7 +1391,8 @@ collect_send(struct collect_conn *tc, int rexmits)
|
|||
#endif /* COLLECT_ANNOUNCEMENTS */
|
||||
|
||||
if(packetqueue_enqueue_packetbuf(&tc->send_queue,
|
||||
FORWARD_PACKET_LIFETIME,
|
||||
FORWARD_PACKET_LIFETIME_BASE *
|
||||
packetbuf_attr(PACKETBUF_ATTR_MAX_REXMIT),
|
||||
tc)) {
|
||||
return 1;
|
||||
} else {
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user