53 #include "net/nbr-table.h" 54 #include "net/link-stats.h" 58 #include "lib/random.h" 65 #if FRAME802154_VERSION < FRAME802154_IEEE802154_2015 66 #error TSCH: FRAME802154_VERSION must be at least FRAME802154_IEEE802154_2015 71 #define LOG_MODULE "TSCH" 72 #define LOG_LEVEL LOG_LEVEL_MAC 76 static linkaddr_t last_eb_nbr_addr;
78 static uint8_t last_eb_nbr_jp;
82 #if TSCH_AUTOSELECT_TIME_SOURCE 83 int best_neighbor_eb_count;
88 NBR_TABLE(
struct eb_stat, eb_stats);
92 uint8_t tsch_hopping_sequence[TSCH_HOPPING_SEQUENCE_MAX_LEN];
96 static const uint16_t *tsch_default_timing_us;
98 uint16_t tsch_timing_us[tsch_ts_elements_count];
100 rtimer_clock_t tsch_timing[tsch_ts_elements_count];
102 #if LINKADDR_SIZE == 8 104 const linkaddr_t tsch_broadcast_address = { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff } };
106 const linkaddr_t tsch_eb_address = { { 0, 0, 0, 0, 0, 0, 0, 0 } };
108 const linkaddr_t tsch_broadcast_address = { { 0xff, 0xff } };
109 const linkaddr_t tsch_eb_address = { { 0, 0 } };
113 int tsch_is_started = 0;
115 int tsch_is_initialized = 0;
117 int tsch_is_coordinator = 0;
119 int tsch_is_associated = 0;
121 int tsch_association_count = 0;
123 int tsch_is_pan_secured = LLSEC802154_ENABLED;
128 uint8_t tsch_join_priority;
130 static uint8_t tsch_packet_seqno;
132 static clock_time_t tsch_current_eb_period;
134 static clock_time_t tsch_current_ka_timeout;
137 enum tsch_keepalive_status {
138 KEEPALIVE_SCHEDULING_UNCHANGED,
139 KEEPALIVE_SCHEDULE_OR_STOP,
140 KEEPALIVE_SEND_IMMEDIATELY,
143 static volatile enum tsch_keepalive_status keepalive_status;
146 static struct ctimer keepalive_timer;
149 unsigned long tx_count;
150 unsigned long rx_count;
151 unsigned long sync_count;
152 int32_t min_drift_seen;
153 int32_t max_drift_seen;
157 PROCESS(tsch_process,
"main process");
158 PROCESS(tsch_send_eb_process,
"send EB process");
159 PROCESS(tsch_pending_events_process,
"pending events process");
162 static void packet_input(
void);
170 if(tsch_is_coordinator != enable) {
171 tsch_is_associated = 0;
173 tsch_is_coordinator = enable;
180 tsch_is_pan_secured = LLSEC802154_ENABLED && enable;
186 tsch_join_priority = jp;
192 tsch_current_ka_timeout = timeout;
199 tsch_current_eb_period = MIN(period, TSCH_MAX_EB_PERIOD);
206 frame802154_set_pan_id(0xffff);
215 tsch_join_priority = 0xff;
219 tsch_default_timing_us = TSCH_DEFAULT_TIMESLOT_TIMING;
220 for(i = 0; i < tsch_ts_elements_count; i++) {
221 tsch_timing_us[i] = tsch_default_timing_us[i];
222 tsch_timing[i] = US_TO_RTIMERTICKS(tsch_timing_us[i]);
224 #ifdef TSCH_CALLBACK_LEAVING_NETWORK 225 TSCH_CALLBACK_LEAVING_NETWORK();
228 #if TSCH_AUTOSELECT_TIME_SOURCE 229 struct nbr_sync_stat *stat;
230 best_neighbor_eb_count = 0;
232 stat = nbr_table_head(sync_stats);
233 while(stat != NULL) {
234 nbr_table_remove(sync_stats, stat);
235 stat = nbr_table_next(sync_stats, stat);
239 keepalive_status = KEEPALIVE_SCHEDULING_UNCHANGED;
249 resynchronize(
const linkaddr_t *original_time_source_addr)
252 if(current_time_source && !
linkaddr_cmp(¤t_time_source->addr, original_time_source_addr)) {
254 LOG_INFO(
"time source has been changed to ");
255 LOG_INFO_LLADDR(¤t_time_source->addr);
261 LOG_WARN(
"not able to re-synchronize, received no EB from other neighbors\n");
262 if(sync_count == 0) {
268 LOG_WARN(
"re-synchronizing on ");
269 LOG_WARN_LLADDR(&last_eb_nbr_addr);
273 tsch_join_priority = last_eb_nbr_jp + 1;
283 keepalive_packet_sent(
void *ptr,
int status,
int transmissions)
285 int schedule_next_keepalive = 1;
287 link_stats_packet_sent(packetbuf_addr(PACKETBUF_ADDR_RECEIVER), status, transmissions);
289 #ifdef TSCH_CALLBACK_KA_SENT 290 TSCH_CALLBACK_KA_SENT(status, transmissions);
292 LOG_INFO(
"KA sent to ");
293 LOG_INFO_LLADDR(packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
294 LOG_INFO_(
", st %d-%d\n", status, transmissions);
298 schedule_next_keepalive = !resynchronize(packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
301 if(schedule_next_keepalive) {
308 keepalive_send(
void *ptr)
313 if(tsch_is_associated) {
318 packetbuf_set_addr(PACKETBUF_ADDR_RECEIVER, &n->addr);
319 NETSTACK_MAC.
send(keepalive_packet_sent, NULL);
320 LOG_INFO(
"sending KA to ");
321 LOG_INFO_LLADDR(&n->addr);
324 LOG_ERR(
"no timesource - KA not sent\n");
334 keepalive_status = KEEPALIVE_SEND_IMMEDIATELY;
335 }
else if(keepalive_status != KEEPALIVE_SEND_IMMEDIATELY) {
337 keepalive_status = KEEPALIVE_SCHEDULE_OR_STOP;
343 tsch_keepalive_process_pending(
void)
345 if(keepalive_status != KEEPALIVE_SCHEDULING_UNCHANGED) {
347 enum tsch_keepalive_status scheduled_status = keepalive_status;
348 keepalive_status = KEEPALIVE_SCHEDULING_UNCHANGED;
350 if(!tsch_is_coordinator && tsch_is_associated) {
351 switch(scheduled_status) {
352 case KEEPALIVE_SEND_IMMEDIATELY:
354 keepalive_send(NULL);
357 case KEEPALIVE_SCHEDULE_OR_STOP:
358 if(tsch_current_ka_timeout > 0) {
361 if(tsch_current_ka_timeout >= 10) {
362 delay = (tsch_current_ka_timeout - tsch_current_ka_timeout / 10)
365 delay = tsch_current_ka_timeout - 1;
367 ctimer_set(&keepalive_timer, delay, keepalive_send, NULL);
391 struct ieee802154_ies eb_ies;
394 &frame, &eb_ies, NULL, 1)) {
400 if(ts == NULL || !
linkaddr_cmp(&last_eb_nbr_addr, &ts->addr)) {
402 last_eb_nbr_jp = eb_ies.ie_join_priority;
405 #if TSCH_AUTOSELECT_TIME_SOURCE 406 if(!tsch_is_coordinator) {
408 struct eb_stat *stat = (
struct eb_stat *)nbr_table_get_from_lladdr(eb_stats, (linkaddr_t *)&frame.
src_addr);
410 stat = (
struct eb_stat *)nbr_table_add_lladdr(eb_stats, (linkaddr_t *)&frame.
src_addr, NBR_TABLE_REASON_MAC, NULL);
414 stat->jp = eb_ies.ie_join_priority;
415 best_neighbor_eb_count = MAX(best_neighbor_eb_count, stat->rx_count);
418 struct eb_stat *best_stat = NULL;
419 stat = nbr_table_head(eb_stats);
420 while(stat != NULL) {
422 if(stat->rx_count > best_neighbor_eb_count / 2) {
423 if(best_stat == NULL ||
424 stat->jp < best_stat->jp) {
428 stat = nbr_table_next(eb_stats, stat);
431 if(best_stat != NULL) {
433 tsch_join_priority = best_stat->jp + 1;
441 int32_t asn_diff =
TSCH_ASN_DIFF(current_input->rx_asn, eb_ies.ie_asn);
444 LOG_WARN(
"! ASN drifted by %ld, leaving the network\n", asn_diff);
448 if(eb_ies.ie_join_priority >= TSCH_MAX_JOIN_PRIORITY) {
450 LOG_WARN(
"! EB JP too high %u, leaving the network\n",
451 eb_ies.ie_join_priority);
454 #if TSCH_AUTOSELECT_TIME_SOURCE 456 if(tsch_join_priority != eb_ies.ie_join_priority + 1) {
457 LOG_INFO(
"update JP from EB %u -> %u\n",
458 tsch_join_priority, eb_ies.ie_join_priority + 1);
459 tsch_join_priority = eb_ies.ie_join_priority + 1;
465 if(eb_ies.ie_channel_hopping_sequence_id != 0) {
466 if(eb_ies.ie_hopping_sequence_len != tsch_hopping_sequence_length.val
467 || memcmp((uint8_t *)tsch_hopping_sequence, eb_ies.ie_hopping_sequence_list, tsch_hopping_sequence_length.val)) {
468 if(eb_ies.ie_hopping_sequence_len <=
sizeof(tsch_hopping_sequence)) {
469 memcpy((uint8_t *)tsch_hopping_sequence, eb_ies.ie_hopping_sequence_list,
470 eb_ies.ie_hopping_sequence_len);
473 LOG_WARN(
"Updating TSCH hopping sequence from EB\n");
475 LOG_WARN(
"TSCH:! parse_eb: hopping sequence too long (%u)\n", eb_ies.ie_hopping_sequence_len);
485 tsch_rx_process_pending()
490 struct input_packet *current_input = &input_array[input_index];
492 uint8_t ret =
frame802154_parse(current_input->payload, current_input->len, &frame);
493 int is_data = ret && frame.
fcf.
frame_type == FRAME802154_DATAFRAME;
502 packetbuf_set_attr(PACKETBUF_ATTR_RSSI, current_input->rssi);
503 packetbuf_set_attr(PACKETBUF_ATTR_CHANNEL, current_input->channel);
510 eb_input(current_input);
520 tsch_tx_process_pending(
void)
522 int16_t dequeued_index;
525 struct tsch_packet *p = dequeued_array[dequeued_index];
527 queuebuf_to_packetbuf(p->qb);
528 LOG_INFO(
"packet sent to ");
529 LOG_INFO_LLADDR(packetbuf_addr(PACKETBUF_ADDR_RECEIVER));
530 LOG_INFO_(
", seqno %u, status %d, tx %d\n",
531 packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO), p->ret, p->transmissions);
533 mac_call_sent_callback(p->sent, p->ptr, p->ret, p->transmissions);
545 tsch_start_coordinator(
void)
547 frame802154_set_pan_id(IEEE802154_PANID);
549 memcpy(tsch_hopping_sequence, TSCH_DEFAULT_HOPPING_SEQUENCE,
sizeof(TSCH_DEFAULT_HOPPING_SEQUENCE));
551 #if TSCH_SCHEDULE_WITH_6TISCH_MINIMAL 555 tsch_is_associated = 1;
556 tsch_join_priority = 0;
558 LOG_INFO(
"starting as coordinator, PAN ID %x, asn-%x.%lx\n",
559 frame802154_get_pan_id(), tsch_current_asn.ms1b, tsch_current_asn.ls4b);
569 if(tsch_is_associated == 1) {
570 tsch_is_associated = 0;
578 tsch_associate(
const struct input_packet *input_eb, rtimer_clock_t timestamp)
581 struct ieee802154_ies ies;
586 &frame, &ies, &hdrlen, 0) == 0) {
587 LOG_DBG(
"! failed to parse EB (len %u)\n", input_eb->len);
591 tsch_current_asn = ies.ie_asn;
592 tsch_join_priority = ies.ie_join_priority + 1;
594 #if TSCH_JOIN_SECURED_ONLY 596 LOG_ERR(
"! parse_eb: EB is not secured\n");
600 #if LLSEC802154_ENABLED 603 &frame, (linkaddr_t*)&frame.
src_addr, &tsch_current_asn)) {
604 LOG_ERR(
"! parse_eb: failed to authenticate\n");
609 #if !LLSEC802154_ENABLED 611 LOG_ERR(
"! parse_eb: we do not support security, but EB is secured\n");
616 #if TSCH_JOIN_MY_PANID_ONLY 618 if(frame.
src_pid != IEEE802154_PANID) {
619 LOG_ERR(
"! parse_eb: PAN ID %x != %x\n", frame.
src_pid, IEEE802154_PANID);
625 if(ies.ie_join_priority == 0xff) {
626 LOG_ERR(
"! parse_eb: no join priority\n");
631 for(i = 0; i < tsch_ts_elements_count; i++) {
632 if(ies.ie_tsch_timeslot_id == 0) {
633 tsch_timing_us[i] = tsch_default_timing_us[i];
635 tsch_timing_us[i] = ies.ie_tsch_timeslot[i];
637 tsch_timing[i] = US_TO_RTIMERTICKS(tsch_timing_us[i]);
641 if(ies.ie_channel_hopping_sequence_id == 0) {
642 memcpy(tsch_hopping_sequence, TSCH_DEFAULT_HOPPING_SEQUENCE,
sizeof(TSCH_DEFAULT_HOPPING_SEQUENCE));
645 if(ies.ie_hopping_sequence_len <=
sizeof(tsch_hopping_sequence)) {
646 memcpy(tsch_hopping_sequence, ies.ie_hopping_sequence_list, ies.ie_hopping_sequence_len);
649 LOG_ERR(
"! parse_eb: hopping sequence too long (%u)\n", ies.ie_hopping_sequence_len);
654 #if TSCH_CHECK_TIME_AT_ASSOCIATION > 0 656 uint32_t expected_asn = 4096 * TSCH_CLOCK_TO_SLOTS(
clock_time() / 4096, tsch_timing_timeslot_length);
657 int32_t asn_threshold = TSCH_CHECK_TIME_AT_ASSOCIATION * 60ul * TSCH_CLOCK_TO_SLOTS(
CLOCK_SECOND, tsch_timing_timeslot_length);
658 int32_t asn_diff = (int32_t)tsch_current_asn.ls4b - expected_asn;
659 if(asn_diff > asn_threshold) {
660 LOG_ERR(
"! EB ASN rejected %lx %lx %ld\n",
661 tsch_current_asn.ls4b, expected_asn, asn_diff);
666 #if TSCH_INIT_SCHEDULE_FROM_EB 668 if(ies.ie_tsch_slotframe_and_link.num_slotframes == 0) {
669 #if TSCH_SCHEDULE_WITH_6TISCH_MINIMAL 670 LOG_INFO(
"parse_eb: no schedule, setting up minimal schedule\n");
673 LOG_INFO(
"parse_eb: no schedule\n");
679 int num_links = ies.ie_tsch_slotframe_and_link.num_links;
680 if(num_links <= FRAME802154E_IE_MAX_LINKS) {
683 ies.ie_tsch_slotframe_and_link.slotframe_handle,
684 ies.ie_tsch_slotframe_and_link.slotframe_size);
685 for(i = 0; i < num_links; i++) {
687 ies.ie_tsch_slotframe_and_link.links[i].link_options,
688 LINK_TYPE_ADVERTISING, &tsch_broadcast_address,
689 ies.ie_tsch_slotframe_and_link.links[i].timeslot, ies.ie_tsch_slotframe_and_link.links[i].channel_offset);
692 LOG_ERR(
"! parse_eb: too many links in schedule (%u)\n", num_links);
698 if(tsch_join_priority < TSCH_MAX_JOIN_PRIORITY) {
708 frame802154_set_pan_id(frame.
src_pid);
714 tsch_is_associated = 1;
725 #ifdef TSCH_CALLBACK_JOINING_NETWORK 726 TSCH_CALLBACK_JOINING_NETWORK();
729 tsch_association_count++;
730 LOG_INFO(
"association done (%u), sec %u, PAN ID %x, asn-%x.%lx, jp %u, timeslot id %u, hopping id %u, slotframe len %u with %u links, from ",
731 tsch_association_count,
734 tsch_current_asn.ms1b, tsch_current_asn.ls4b, tsch_join_priority,
735 ies.ie_tsch_timeslot_id,
736 ies.ie_channel_hopping_sequence_id,
737 ies.ie_tsch_slotframe_and_link.slotframe_size,
738 ies.ie_tsch_slotframe_and_link.num_links);
739 LOG_INFO_LLADDR((
const linkaddr_t *)&frame.
src_addr);
745 LOG_ERR(
"! did not associate.\n");
760 static struct etimer scan_timer;
762 static clock_time_t current_channel_since;
769 while(!tsch_is_associated && !tsch_is_coordinator) {
771 static uint8_t current_channel = 0;
775 int is_packet_pending = 0;
779 if(current_channel == 0 || now_time - current_channel_since > TSCH_CHANNEL_SCAN_DURATION) {
781 uint8_t scan_channel = TSCH_JOIN_HOPPING_SEQUENCE[
782 random_rand() %
sizeof(TSCH_JOIN_HOPPING_SEQUENCE)];
784 NETSTACK_RADIO.set_value(RADIO_PARAM_CHANNEL, scan_channel);
785 current_channel = scan_channel;
786 LOG_INFO(
"scanning on channel %u\n", scan_channel);
788 current_channel_since = now_time;
794 is_packet_pending = NETSTACK_RADIO.pending_packet();
795 if(!is_packet_pending && NETSTACK_RADIO.receiving_packet()) {
801 if(is_packet_pending) {
804 input_eb.len = NETSTACK_RADIO.read(input_eb.payload, TSCH_PACKET_MAX_LEN);
806 if(input_eb.len > 0) {
808 NETSTACK_RADIO.get_object(RADIO_PARAM_LAST_PACKET_TIMESTAMP, &t0,
sizeof(rtimer_clock_t));
812 LOG_INFO(
"scan: received packet (%u bytes) on channel %u\n", input_eb.len, current_channel);
816 tsch_associate(&input_eb, t0);
818 LOG_WARN(
"scan: dropping packet, timestamp too far from current time %u %u\n",
826 if(tsch_is_associated) {
828 NETSTACK_RADIO.off();
829 }
else if(!tsch_is_coordinator) {
843 static struct pt scan_pt;
849 while(!tsch_is_associated) {
850 if(tsch_is_coordinator) {
852 tsch_start_coordinator();
866 LOG_WARN(
"leaving the network, stats: tx %lu, rx %lu, sync %lu\n",
867 tx_count, rx_count, sync_count);
880 static struct etimer eb_timer;
886 while(!tsch_is_associated) {
892 if(!tsch_is_coordinator) {
900 if(tsch_is_associated && tsch_current_eb_period > 0
901 #ifdef TSCH_RPL_CHECK_DODAG_JOINED
903 && TSCH_RPL_CHECK_DODAG_JOINED()
911 uint8_t tsch_sync_ie_offset;
917 LOG_ERR(
"! could not enqueue EB packet\n");
919 LOG_INFO(
"TSCH: enqueue EB packet %u %u\n",
921 p->tsch_sync_ie_offset = tsch_sync_ie_offset;
922 p->header_len = hdr_len;
927 if(tsch_current_eb_period > 0) {
930 delay = (tsch_current_eb_period - tsch_current_eb_period / 4)
933 delay = TSCH_EB_PERIOD;
949 tsch_rx_process_pending();
950 tsch_tx_process_pending();
952 tsch_keepalive_process_pending();
953 #ifdef TSCH_CALLBACK_SELECT_CHANNELS 954 TSCH_CALLBACK_SELECT_CHANNELS();
973 if(TSCH_DEFAULT_TIMESLOT_TIMING == NULL) {
974 LOG_ERR(
"! platform does not provide a timeslot timing template.\n");
979 if(NETSTACK_RADIO.get_value(RADIO_CONST_MAX_PAYLOAD_LEN, &radio_max_payload_len) != RADIO_RESULT_OK) {
980 LOG_ERR(
"! radio does not support getting RADIO_CONST_MAX_PAYLOAD_LEN. Abort init.\n");
985 if(NETSTACK_RADIO.get_value(RADIO_PARAM_RX_MODE, &radio_rx_mode) != RADIO_RESULT_OK) {
986 LOG_ERR(
"! radio does not support getting RADIO_PARAM_RX_MODE. Abort init.\n");
992 radio_rx_mode &= ~RADIO_RX_MODE_AUTOACK;
994 radio_rx_mode |= RADIO_RX_MODE_POLL_MODE;
995 if(NETSTACK_RADIO.set_value(RADIO_PARAM_RX_MODE, radio_rx_mode) != RADIO_RESULT_OK) {
996 LOG_ERR(
"! radio does not support setting required RADIO_PARAM_RX_MODE. Abort init.\n");
1001 if(NETSTACK_RADIO.get_value(RADIO_PARAM_TX_MODE, &radio_tx_mode) != RADIO_RESULT_OK) {
1002 LOG_ERR(
"! radio does not support getting RADIO_PARAM_TX_MODE. Abort init.\n");
1007 if(NETSTACK_RADIO.set_value(RADIO_PARAM_TX_MODE, radio_tx_mode) != RADIO_RESULT_OK) {
1008 LOG_ERR(
"! radio does not support setting required RADIO_PARAM_TX_MODE. Abort init.\n");
1012 if(NETSTACK_RADIO.set_value(RADIO_PARAM_CHANNEL, TSCH_DEFAULT_HOPPING_SEQUENCE[0]) != RADIO_RESULT_OK) {
1013 LOG_ERR(
"! radio does not support setting channel. Abort init.\n");
1017 if(NETSTACK_RADIO.get_object(RADIO_PARAM_LAST_PACKET_TIMESTAMP, &t,
sizeof(rtimer_clock_t)) != RADIO_RESULT_OK) {
1018 LOG_ERR(
"! radio does not support getting last packet timestamp. Abort init.\n");
1022 if(TSCH_HOPPING_SEQUENCE_MAX_LEN <
sizeof(TSCH_DEFAULT_HOPPING_SEQUENCE)) {
1023 LOG_ERR(
"! TSCH_HOPPING_SEQUENCE_MAX_LEN < sizeof(TSCH_DEFAULT_HOPPING_SEQUENCE). Abort init.\n");
1034 #if TSCH_AUTOSELECT_TIME_SOURCE 1035 nbr_table_register(sync_stats, NULL);
1039 tsch_is_initialized = 1;
1047 #if TSCH_WITH_SIXTOP 1060 const linkaddr_t *
addr = packetbuf_addr(PACKETBUF_ADDR_RECEIVER);
1061 uint8_t max_transmissions = 0;
1063 if(!tsch_is_associated) {
1064 if(!tsch_is_initialized) {
1065 LOG_WARN(
"! not initialized (see earlier logs), drop outgoing packet\n");
1067 LOG_WARN(
"! not associated, drop outgoing packet\n");
1070 mac_call_sent_callback(sent, ptr, ret, 1);
1078 if(++tsch_packet_seqno == 0) {
1079 tsch_packet_seqno++;
1081 packetbuf_set_attr(PACKETBUF_ATTR_MAC_SEQNO, tsch_packet_seqno);
1082 packetbuf_set_attr(PACKETBUF_ATTR_MAC_ACK, 1);
1087 addr = &tsch_broadcast_address;
1090 packetbuf_set_attr(PACKETBUF_ATTR_FRAME_TYPE, FRAME802154_DATAFRAME);
1092 #if LLSEC802154_ENABLED 1096 #if !NETSTACK_CONF_BRIDGE_MODE 1105 max_transmissions = packetbuf_attr(PACKETBUF_ATTR_MAX_MAC_TRANSMISSIONS);
1106 if(max_transmissions == 0) {
1108 max_transmissions = TSCH_MAC_MAX_FRAME_RETRIES + 1;
1111 if((hdr_len = NETSTACK_FRAMER.create()) < 0) {
1112 LOG_ERR(
"! can't send packet due to framer error\n");
1119 LOG_ERR(
"! can't send packet to ");
1120 LOG_ERR_LLADDR(addr);
1121 LOG_ERR_(
" with seqno %u, queue %u %u\n",
1125 p->header_len = hdr_len;
1126 LOG_INFO(
"send packet to ");
1127 LOG_INFO_LLADDR(addr);
1128 LOG_INFO_(
" with seqno %u, queue %u %u, len %u %u\n",
1131 p->header_len, queuebuf_datalen(p->qb));
1135 mac_call_sent_callback(sent, ptr, ret, 1);
1142 int frame_parsed = 1;
1144 frame_parsed = NETSTACK_FRAMER.parse();
1146 if(frame_parsed < 0) {
1152 if(packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO) != 0xffff) {
1157 LOG_WARN(
"! drop dup ll from ");
1158 LOG_WARN_LLADDR(packetbuf_addr(PACKETBUF_ADDR_SENDER));
1159 LOG_WARN_(
" seqno %u\n", packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO));
1166 LOG_INFO(
"received from ");
1167 LOG_INFO_LLADDR(packetbuf_addr(PACKETBUF_ADDR_SENDER));
1168 LOG_INFO_(
" with seqno %u\n", packetbuf_attr(PACKETBUF_ATTR_MAC_SEQNO));
1169 #if TSCH_WITH_SIXTOP 1172 NETSTACK_NETWORK.input();
1180 if(tsch_is_initialized == 1 && tsch_is_started == 0) {
1181 tsch_is_started = 1;
1184 if(TSCH_EB_PERIOD > 0) {
1190 LOG_INFO(
"starting as %s\n", tsch_is_coordinator ?
"coordinator":
"node");
1199 NETSTACK_RADIO.off();
1210 res = NETSTACK_RADIO.get_value(RADIO_CONST_MAX_PAYLOAD_LEN,
1211 &max_radio_payload_len);
1213 if(res == RADIO_RESULT_NOT_SUPPORTED) {
1214 LOG_ERR(
"Failed to retrieve max radio driver payload length\n");
1221 framer_hdrlen = NETSTACK_FRAMER.length();
1222 if(framer_hdrlen < 0) {
1227 return MIN(max_radio_payload_len, TSCH_PACKET_MAX_LEN)
1229 - LLSEC802154_PACKETBUF_MIC_LEN();
uint16_t src_pid
Source PAN ID.
#define TSCH_ASN_DIVISOR_INIT(div, val_)
Initialize a struct asn_divisor_t.
int tsch_queue_global_packet_count(void)
Returns the number of packets currently in all TSCH queues.
void process_post_synch(struct process *p, process_event_t ev, process_data_t data)
Post a synchronous event to a process.
#define PROCESS(name, strname)
Declare a process.
void ctimer_stop(struct ctimer *c)
Stop a pending callback timer.
void ringbufindex_init(struct ringbufindex *r, uint8_t size)
Initialize a ring buffer.
void tsch_log_process_pending(void)
Process pending log messages.
int tsch_packet_create_eb(uint8_t *hdr_len, uint8_t *tsch_sync_ie_offset)
Create an EB packet directly in packetbuf.
int(* on)(void)
Turn the MAC layer on.
frame802154_fcf_t fcf
Frame control field.
void packetbuf_clear(void)
Clear and reset the packetbuf.
static uip_ds6_addr_t * addr
Pointer to a nbr cache entry.
int ringbufindex_peek_get(const struct ringbufindex *r)
Return the index of the first element which will be removed if calling ringbufindex_get.
int tsch_schedule_init(void)
Module initialization, call only once at init.
The structure of a MAC protocol driver in Contiki.
void tsch_set_join_priority(uint8_t jp)
Set the TSCH join priority (JP)
#define PROCESS_YIELD_UNTIL(c)
Yield the currently running process until a condition occurs.
Header file for the radio API
#define PROCESS_BEGIN()
Define the beginning of a process.
uint8_t security_enabled
1 bit.
void tsch_log_init(void)
Initialize log module.
#define PROCESS_END()
Define the end of a process.
static void send_packet(linkaddr_t *dest)
This function is called by the 6lowpan code to send out a packet.
int frame802154_parse(uint8_t *data, int len, frame802154_t *pf)
Parses an input frame.
int mac_sequence_is_duplicate(void)
Tell whether the packetbuf is a duplicate packet.
TSCH neighbor information.
802.15.4e slotframe (contains links)
void tsch_queue_init(void)
Initialize TSCH queue module.
#define PT_BEGIN(pt)
Declare the start of a protothread inside the C function implementing the protothread.
unsigned int tsch_security_parse_frame(const uint8_t *hdr, int hdrlen, int datalen, const frame802154_t *frame, const linkaddr_t *sender, struct tsch_asn_t *asn)
Parse and check a frame protected with encryption and/or MIC.
struct tsch_neighbor * tsch_queue_get_time_source(void)
Get the TSCH time source (we currently assume there is only one)
#define PT_WAIT_UNTIL(pt, condition)
Block and wait until condition is true.
void tsch_set_ka_timeout(uint32_t timeout)
Set the desynchronization timeout after which a node sends a unicasst keep-alive (KA) to its time sou...
uint8_t packetbuf_hdrlen(void)
Get the length of the header in the packetbuf.
struct tsch_slotframe * tsch_schedule_add_slotframe(uint16_t handle, uint16_t size)
Creates and adds a new slotframe.
uint8_t(* is_in_leaf_mode)(void)
Tells whether the protocol is in leaf mode.
int radio_value_t
Each radio has a set of parameters that designate the current configuration and state of the radio...
uint8_t src_addr[8]
Source address.
A MAC framer for IEEE 802.15.4
const linkaddr_t linkaddr_null
The null link-layer address.
#define RTIMER_SECOND
Number of rtimer ticks for 1 second.
Header file for MAC sequence numbers management
void tsch_queue_free_unused_neighbors(void)
Deallocate all neighbors with empty queue.
The MAC layer transmission could not be performed because of an error.
uint16_t packetbuf_datalen(void)
Get the length of the data in the packetbuf.
linkaddr_t linkaddr_node_addr
The link-layer address of the node.
void sixtop_init(void)
Initialize 6top module This initialization function removes all the SFs which has been installed into...
#define RTIMER_NOW()
Get the current clock time.
void sixtop_input(void)
Input a packet stored in packetbuf.
unsigned int tsch_security_mic_len(const frame802154_t *frame)
Return MIC length.
#define CLOCK_SECOND
A second, measured in system clock time.
For quick modulo operation on ASN.
#define PT_END(pt)
Declare the end of a protothread.
struct tsch_neighbor * tsch_queue_add_nbr(const linkaddr_t *addr)
Add a TSCH neighbor queue.
Header file for the Packet queue buffer management
void tsch_set_eb_period(uint32_t period)
Set the period at wich TSCH enhanced beacons (EBs) are sent.
uint8_t frame_version
2 bit.
void process_poll(struct process *p)
Request a process to be polled.
uint16_t packetbuf_totlen(void)
Get the total length of the header and data in the packetbuf.
void tsch_schedule_keepalive(int immediate)
Schedule a keep-alive transmission within [timeout*0.9, timeout[ Can be called from an interrupt...
int tsch_queue_update_time_source(const linkaddr_t *new_addr)
Update TSCH time source.
void ctimer_set(struct ctimer *c, clock_time_t t, void(*f)(void *), void *ptr)
Set a callback timer.
Routing driver header file
Main API declarations for TSCH.
int packetbuf_copyfrom(const void *from, uint16_t len)
Copy from external data into the packetbuf.
clock_time_t clock_time(void)
Get the current clock time.
#define RTIMER_BUSYWAIT_UNTIL_ABS(cond, t0, max_time)
Busy-wait until a condition.
int etimer_expired(struct etimer *et)
Check if an event timer has expired.
struct tsch_link * tsch_schedule_add_link(struct tsch_slotframe *slotframe, uint8_t link_options, enum link_type link_type, const linkaddr_t *address, uint16_t timeslot, uint16_t channel_offset)
Adds a link to a slotframe.
The MAC layer transmission could not be performed because of a fatal error.
#define TSCH_ASN_INIT(asn, ms1b_, ls4b_)
Initialize ASN.
void tsch_security_set_packetbuf_attr(uint8_t frame_type)
Set packetbuf (or eackbuf) attributes depending on a given frame type.
#define RADIO_RX_MODE_ADDRESS_FILTER
The radio reception mode controls address filtering and automatic transmission of acknowledgements in...
void tsch_slot_operation_sync(rtimer_clock_t next_slot_start, struct tsch_asn_t *next_slot_asn)
Set global time before starting slot operation, with a rtimer time and an ASN.
Parameters used by the frame802154_create() function.
void linkaddr_copy(linkaddr_t *dest, const linkaddr_t *src)
Copy a link-layer address.
#define PT_THREAD(name_args)
Declaration of a protothread.
6TiSCH Operation Sublayer (6top) APIs
#define RADIO_TX_MODE_SEND_ON_CCA
The radio transmission mode controls whether transmissions should be done using clear channel assessm...
#define TSCH_ASN_DIFF(asn1, asn2)
Returns the 32-bit diff between asn1 and asn2.
int linkaddr_cmp(const linkaddr_t *addr1, const linkaddr_t *addr2)
Compare two link-layer addresses.
void tsch_queue_reset(void)
Reset neighbor queues module.
void(* send)(mac_callback_t sent_callback, void *ptr)
Send a packet from the packetbuf.
int tsch_schedule_remove_all_slotframes(void)
Removes all slotframes, resulting in an empty schedule.
int tsch_queue_packet_count(const linkaddr_t *addr)
Returns the number of packets currently a given neighbor queue.
int ringbufindex_get(struct ringbufindex *r)
Remove the first element and return its index.
void tsch_disassociate(void)
Leave the TSCH network we are currently in.
void tsch_set_pan_secured(int enable)
Enable/disable security.
Header file for the Packet buffer (packetbuf) management
Include file for the Contiki low-layer network stack (NETSTACK)
void mac_sequence_register_seqno(void)
Register the sequence number of the packetbuf.
#define PROCESS_PT_SPAWN(pt, thread)
Spawn a protothread from the process.
int(* max_payload)(void)
Read out estimated max payload size based on payload in packetbuf.
void tsch_queue_free_packet(struct tsch_packet *p)
Free a packet.
PROCESS_THREAD(cc2538_rf_process, ev, data)
Implementation of the cc2538 RF driver process.
unsigned short random_rand(void)
Generates a new random number using the cc2538 RNG.
struct tsch_packet * tsch_queue_add_packet(const linkaddr_t *addr, uint8_t max_transmissions, mac_callback_t sent, void *ptr)
Add packet to neighbor queue.
void tsch_adaptive_timesync_reset(void)
Reset the status of the module.
void etimer_reset(struct etimer *et)
Reset an event timer with the same interval as was previously set.
Header file for the logging system
The MAC layer deferred the transmission for a later time.
void tsch_slot_operation_start(void)
Start actual slot operation.
int tsch_packet_parse_eb(const uint8_t *buf, int buf_size, frame802154_t *frame, struct ieee802154_ies *ies, uint8_t *hdr_len, int frame_without_mic)
Parse EB.
void etimer_set(struct etimer *et, clock_time_t interval)
Set an event timer.
The ASN is an absolute slot number over 5 bytes.
void tsch_schedule_create_minimal(void)
Create a 6tisch minimal schedule with length TSCH_SCHEDULE_DEFAULT_LENGTH.
#define PROCESS_WAIT_UNTIL(c)
Wait for a condition to occur.
void tsch_set_coordinator(int enable)
Set the node as PAN coordinator.
void process_start(struct process *p, process_data_t data)
Start a process.