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Reduced the size of the packet cache from four to two to avoid falseley dismissing fresh packets (the header field that hold sequence numbers is only two bits wide, hence all sequence numbers fits in a four-entry cache...)

This commit is contained in:
adamdunkels 2009-02-10 00:44:50 +00:00
parent 6c95bd895a
commit e1ef13dad6
1 changed files with 5 additions and 3 deletions
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8
core/net/rime/collect.c
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@ -36,7 +36,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: collect.c,v 1.16 2009/02/09 20:58:25 adamdunkels Exp $
* $Id: collect.c,v 1.17 2009/02/10 00:44:50 adamdunkels Exp $
*/
/**
@ -68,7 +68,7 @@ static const struct rimebuf_attrlist attributes[] =
RIMEBUF_ATTR_LAST
};
#define NUM_RECENT_PACKETS 4
#define NUM_RECENT_PACKETS 2
struct recent_packet {
rimeaddr_t originator;
@ -156,9 +156,11 @@ node_packet_received(struct runicast_conn *c, rimeaddr_t *from, uint8_t seqno)
packet exists in the list, we drop the packet. */
for(i = 0; i < NUM_RECENT_PACKETS; i++) {
if(recent_packets[i].seqno == rimebuf_attr(RIMEBUF_ATTR_EPACKET_ID)&&
if(recent_packets[i].seqno == rimebuf_attr(RIMEBUF_ATTR_EPACKET_ID) &&
rimeaddr_cmp(&recent_packets[i].originator,
rimebuf_addr(RIMEBUF_ADDR_ESENDER))) {
PRINTF("%d.%d: dropping duplicate packet with seqno %d\n",
rimebuf_attr(RIMEBUF_ATTR_EPACKET_ID));
/* Drop the packet. */
return;
}