Rewrote LPP so that it uses 802.15.4 headers. A number of bugfixes with respect to alignment. Avoid turning off the radio in the middle of packet reception.
This commit is contained in:
adamdunkels
parent
55b6129bd2
commit
e606c674c2
1 changed files with 93 additions and 57 deletions
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@ -28,7 +28,7 @@
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: lpp.c,v 1.32 2010/02/23 20:09:11 nifi Exp $
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* $Id: lpp.c,v 1.33 2010/04/30 07:31:44 adamdunkels Exp $
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*/
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/**
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@ -74,7 +74,7 @@
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#define PRINTF(...)
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#endif
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#define WITH_ACK_OPTIMIZATION 1
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#define WITH_ACK_OPTIMIZATION 0
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#define WITH_PROBE_AFTER_RECEPTION 0
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#define WITH_PROBE_AFTER_TRANSMISSION 0
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#define WITH_ENCOUNTER_OPTIMIZATION 1
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@ -82,20 +82,11 @@
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#define WITH_PENDING_BROADCAST 1
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#define WITH_STREAMING 1
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#ifdef LPP_CONF_LISTEN_TIME
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#define LISTEN_TIME LPP_CONF_LISTEN_TIME
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#else
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#define LISTEN_TIME (CLOCK_SECOND / 128)
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#endif /** LP_CONF_LISTEN_TIME */
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#ifdef LPP_CONF_OFF_TIME
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#define OFF_TIME LPP_CONF_OFF_TIME
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#else
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#define OFF_TIME (CLOCK_SECOND / MAC_CHANNEL_CHECK_RATE - LISTEN_TIME)
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#endif /* LPP_CONF_OFF_TIME */
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#define PACKET_LIFETIME (LISTEN_TIME + OFF_TIME)
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#define UNICAST_TIMEOUT (4 * PACKET_LIFETIME)
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#define UNICAST_TIMEOUT (1 * PACKET_LIFETIME)
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#define PROBE_AFTER_TRANSMISSION_TIME (LISTEN_TIME * 2)
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#define LOWEST_OFF_TIME (CLOCK_SECOND / 8)
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@ -190,6 +181,11 @@ static struct ctimer stream_probe_timer, stream_off_timer;
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#define STREAM_PROBE_TIME CLOCK_SECOND / 128
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#define STREAM_OFF_TIME CLOCK_SECOND / 2
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#endif /* WITH_STREAMING */
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#ifndef MIN
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#define MIN(a, b) ((a) < (b)? (a) : (b))
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#endif /* MIN */
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/*---------------------------------------------------------------------------*/
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static void
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turn_radio_on(void)
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@ -316,7 +312,8 @@ turn_radio_on_for_neighbor(rimeaddr_t *neighbor, struct queue_list_item *i)
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time with modulo OFF_TIME. */
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now = clock_time();
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wait = ((clock_time_t)(e->time - now)) % (OFF_TIME + LISTEN_TIME) - LISTEN_TIME;
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wait = (((clock_time_t)(e->time - now)) % (OFF_TIME + LISTEN_TIME)) -
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2 * LISTEN_TIME;
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/* printf("now %d e %d e-n %d w %d %d\n", now, e->time, e->time - now, (e->time - now) % (OFF_TIME), wait);
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@ -359,6 +356,8 @@ remove_queued_packet(void *item)
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1]);
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queuebuf_to_packetbuf(i->packet);
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ctimer_stop(&i->removal_timer);
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queuebuf_free(i->packet);
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list_remove(pending_packets_list, i);
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@ -414,8 +413,18 @@ send_probe(void)
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hdr = packetbuf_dataptr();
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hdr->type = TYPE_PROBE;
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rimeaddr_copy(&hdr->sender, &rimeaddr_node_addr);
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rimeaddr_copy(&hdr->receiver, packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
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/* rimeaddr_copy(&hdr->receiver, packetbuf_addr(PACKETBUF_ADDR_RECEIVER));*/
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rimeaddr_copy(&hdr->receiver, &rimeaddr_null);
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packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, &rimeaddr_null);
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{
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int hdrlen = NETSTACK_FRAMER.create();
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if(hdrlen == 0) {
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/* Failed to send */
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PRINTF("contikimac: send failed, too large header\n");
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return MAC_TX_ERR_FATAL;
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}
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}
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/* Construct the announcements */
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adata = (struct announcement_msg *)((char *)hdr + sizeof(struct lpp_hdr));
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@ -542,8 +551,10 @@ dutycycle(void *ptr)
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/* If we are not listening for announcements, we turn the radio
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off and wait until we send the next probe. */
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if(is_listening == 0) {
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if(!NETSTACK_RADIO.receiving_packet()) {
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turn_radio_off();
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compower_accumulate(&compower_idle_activity);
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}
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ctimer_set(t, off_time + off_time_adjustment, (void (*)(void *))dutycycle, t);
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off_time_adjustment = 0;
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PT_YIELD(&dutycycle_pt);
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@ -610,8 +621,17 @@ send_packet(mac_callback_t sent, void *ptr)
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packetbuf_hdralloc(sizeof(struct lpp_hdr));
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memcpy(packetbuf_hdrptr(), &hdr, sizeof(struct lpp_hdr));
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packetbuf_compact();
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{
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int hdrlen = NETSTACK_FRAMER.create();
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if(hdrlen == 0) {
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/* Failed to send */
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PRINTF("contikimac: send failed, too large header\n");
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return MAC_TX_ERR_FATAL;
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}
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}
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PRINTF("%d.%d: queueing packet to %d.%d, channel %d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr.receiver.u8[0], hdr.receiver.u8[1],
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@ -688,38 +708,52 @@ send_packet(mac_callback_t sent, void *ptr)
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static void
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input_packet(void)
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{
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struct lpp_hdr *hdr;
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struct lpp_hdr hdr;
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clock_time_t reception_time;
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reception_time = clock_time();
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hdr = packetbuf_dataptr();
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if(!NETSTACK_FRAMER.parse()) {
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printf("lpp input_packet framer error\n");
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}
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memcpy(&hdr, packetbuf_dataptr(), sizeof(struct lpp_hdr));;
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packetbuf_hdrreduce(sizeof(struct lpp_hdr));
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/* PRINTF("got packet type %d\n", hdr->type);*/
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if(hdr->type == TYPE_PROBE) {
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/* Parse incoming announcements */
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struct announcement_msg *adata = packetbuf_dataptr();
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if(hdr.type == TYPE_PROBE) {
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struct announcement_msg adata;
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int i;
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/* PRINTF("%d.%d: probe from %d.%d with %d announcements\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr->sender.u8[0], hdr->sender.u8[1], adata->num);*/
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/* Register the encounter with the sending node. We now know the
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neighbor's phase. */
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register_encounter(&hdr.sender, reception_time);
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for(i = 0; i < adata->num; ++i) {
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/* Parse incoming announcements */
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memcpy(&adata, packetbuf_dataptr(),
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MIN(packetbuf_datalen(), sizeof(adata)));
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#if 0
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PRINTF("%d.%d: probe from %d.%d with %d announcements\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr.sender.u8[0], hdr.sender.u8[1], adata->num);
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if(adata.num / sizeof(struct announcement_data) > sizeof(struct announcement_msg)) {
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/* Sanity check. The number of announcements is too large -
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corrupt packet has been received. */
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return 0;
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}
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for(i = 0; i < adata.num; ++i) {
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/* PRINTF("%d.%d: announcement %d: %d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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adata->data[i].id,
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adata->data[i].value);*/
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announcement_heard(&hdr->sender,
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adata->data[i].id,
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adata->data[i].value);
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announcement_heard(&hdr.sender,
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adata.data[i].id,
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adata.data[i].value);
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}
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/* Register the encounter with the sending node. We now know the
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neighbor's phase. */
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register_encounter(&hdr->sender, reception_time);
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#endif /* 0 */
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/* Go through the list of packets to be sent to see if any of
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them match the sender of the probe, or if they are a
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@ -727,11 +761,11 @@ input_packet(void)
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if(list_length(queued_packets_list) > 0) {
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struct queue_list_item *i;
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for(i = list_head(queued_packets_list); i != NULL; i = i->next) {
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struct lpp_hdr *qhdr;
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const rimeaddr_t *receiver;
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qhdr = queuebuf_dataptr(i->packet);
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if(rimeaddr_cmp(&qhdr->receiver, &hdr->sender) ||
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rimeaddr_cmp(&qhdr->receiver, &rimeaddr_null)) {
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receiver = queuebuf_addr(i->packet, PACKETBUF_ADDR_RECEIVER);
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if(rimeaddr_cmp(receiver, &hdr.sender) ||
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rimeaddr_cmp(receiver, &rimeaddr_null)) {
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queuebuf_to_packetbuf(i->packet);
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#if WITH_PENDING_BROADCAST
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@ -740,15 +774,16 @@ input_packet(void)
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i->num_transmissions = 1;
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NETSTACK_RADIO.send(queuebuf_dataptr(i->packet),
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queuebuf_datalen(i->packet));
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turn_radio_off();
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PRINTF("%d.%d: got a probe from %d.%d, sent packet to %d.%d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr->sender.u8[0], hdr->sender.u8[1],
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qhdr->receiver.u8[0], qhdr->receiver.u8[1]);
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hdr.sender.u8[0], hdr.sender.u8[1],
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receiver->u8[0], receiver->u8[1]);
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} else {
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PRINTF("%d.%d: got a probe from %d.%d, did not send packet\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr->sender.u8[0], hdr->sender.u8[1]);
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hdr.sender.u8[0], hdr.sender.u8[1]);
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}
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#else /* WITH_PENDING_BROADCAST */
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i->num_transmissions = 1;
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@ -756,11 +791,11 @@ input_packet(void)
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queuebuf_datalen(i->packet));
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PRINTF("%d.%d: got a probe from %d.%d, sent packet to %d.%d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr->sender.u8[0], hdr->sender.u8[1],
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qhdr->receiver.u8[0], qhdr->receiver.u8[1]);
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hdr.sender.u8[0], hdr.sender.u8[1],
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receiver->u8[0], receiver->u8[1]);
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#endif /* WITH_PENDING_BROADCAST */
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/* off();*/
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/* Attribute the energy spent on listening for the probe
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to this packet transmission. */
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@ -770,7 +805,7 @@ input_packet(void)
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now. Broadcast packets should be transmitted to all
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neighbors, and are dequeued by the dutycycling function
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instead, after the appropriate time. */
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if(!rimeaddr_cmp(&qhdr->receiver, &rimeaddr_null)) {
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if(!rimeaddr_cmp(receiver, &rimeaddr_null)) {
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remove_queued_packet(i);
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#if WITH_PROBE_AFTER_TRANSMISSION
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@ -799,22 +834,23 @@ input_packet(void)
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}
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}
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} else if(hdr->type == TYPE_DATA) {
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if(!rimeaddr_cmp(&hdr->receiver, &rimeaddr_null)) {
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if(!rimeaddr_cmp(&hdr->receiver, &rimeaddr_node_addr)) {
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} else if(hdr.type == TYPE_DATA) {
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turn_radio_off();
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if(!rimeaddr_cmp(&hdr.receiver, &rimeaddr_null)) {
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if(!rimeaddr_cmp(&hdr.receiver, &rimeaddr_node_addr)) {
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/* Not broadcast or for us */
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PRINTF("%d.%d: data not for us from %d.%d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr->sender.u8[0], hdr->sender.u8[1]);
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hdr.sender.u8[0], hdr.sender.u8[1]);
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return;
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}
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packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, &hdr->receiver);
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packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, &hdr.receiver);
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}
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packetbuf_set_addr(PACKETBUF_ADDR_SENDER, &hdr->sender);
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packetbuf_set_addr(PACKETBUF_ADDR_SENDER, &hdr.sender);
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PRINTF("%d.%d: got data from %d.%d\n",
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rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
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hdr->sender.u8[0], hdr->sender.u8[1]);
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hdr.sender.u8[0], hdr.sender.u8[1]);
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/* Accumulate the power consumption for the packet reception. */
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compower_accumulate(¤t_packet);
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@ -829,7 +865,7 @@ input_packet(void)
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compower_clear(¤t_packet);
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#if WITH_PENDING_BROADCAST
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if(rimeaddr_cmp(&hdr->receiver, &rimeaddr_null)) {
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if(rimeaddr_cmp(&hdr.receiver, &rimeaddr_null)) {
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/* This is a broadcast packet. Check the list of pending
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packets to see if we are currently sending a broadcast. If
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so, we refrain from sending our broadcast until one sleep
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@ -853,7 +889,7 @@ input_packet(void)
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/* XXX send probe after receiving a packet to facilitate data
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streaming. We must first copy the contents of the packetbuf into
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a queuebuf to avoid overwriting the data with the probe packet. */
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if(rimeaddr_cmp(&hdr->receiver, &rimeaddr_node_addr)) {
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if(rimeaddr_cmp(&hdr.receiver, &rimeaddr_node_addr)) {
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struct queuebuf *q;
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q = queuebuf_new_from_packetbuf();
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if(q != NULL) {
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