Add support for IEEE 802.15.4e Information Elements (IEs). All IEs used by TSCH are currently included.

2015-09-21 18:49:31 +02:00 · 2015-09-21 18:49:31 +02:00 · ecba49c282
commit ecba49c282
parent 5cf9871d5b
5 changed files with 1088 additions and 0 deletions
--- a/core/net/mac/tsch/tsch-private.h
+++ b/core/net/mac/tsch/tsch-private.h
@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2014, SICS Swedish ICT.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ *
+ */
+
+/**
+ * \file
+ *         Private TSCH definitions
+ *         (meant for use by TSCH implementation files only)
+ * \author
+ *         Simon Duquennoy <simonduq@sics.se>
+ *         Beshr Al Nahas <beshr@sics.se>
+ */
+
+#ifndef __TSCH_PRIVATE_H__
+#define __TSCH_PRIVATE_H__
+
+/********** Includes **********/
+
+#include "contiki.h"
+#include "net/linkaddr.h"
+#include "net/mac/tsch/tsch-asn.h"
+#include "net/mac/tsch/tsch-conf.h"
+
+/************ Types ***********/
+
+/* TSCH timeslot timing elements. Used to index timeslot timing
+ * of different units, such as rtimer tick or micro-second */
+enum tsch_timeslot_timing_elements {
+  tsch_ts_cca_offset,
+  tsch_ts_cca,
+  tsch_ts_tx_offset,
+  tsch_ts_rx_offset,
+  tsch_ts_rx_ack_delay,
+  tsch_ts_tx_ack_delay,
+  tsch_ts_rx_wait,
+  tsch_ts_ack_wait,
+  tsch_ts_rx_tx,
+  tsch_ts_max_ack,
+  tsch_ts_max_tx,
+  tsch_ts_timeslot_length,
+  tsch_ts_elements_count, /* Not a timing element */
+};
+
+/***** External Variables *****/
+
+/* 802.15.4 broadcast MAC address */
+extern const linkaddr_t tsch_broadcast_address;
+/* The address we use to identify EB queue */
+extern const linkaddr_t tsch_eb_address;
+/* The current Absolute Slot Number (ASN) */
+extern struct asn_t current_asn;
+extern uint8_t tsch_join_priority;
+extern struct tsch_link *current_link;
+/* TSCH channel hopping sequence */
+extern uint8_t tsch_hopping_sequence[TSCH_HOPPING_SEQUENCE_MAX_LEN];
+extern struct asn_divisor_t tsch_hopping_sequence_length;
+/* TSCH timeslot timing (in rtimer ticks) */
+extern rtimer_clock_t tsch_timing[tsch_ts_elements_count];
+
+/* TSCH processes */
+PROCESS_NAME(tsch_process);
+PROCESS_NAME(tsch_send_eb_process);
+PROCESS_NAME(tsch_pending_events_process);
+
+/********** Functions *********/
+
+/* Set TSCH to send a keepalive message after TSCH_KEEPALIVE_TIMEOUT */
+void tsch_schedule_keepalive(void);
+/* Leave the TSCH network */
+void tsch_disassociate(void);
+
+/************ Macros **********/
+
+/* Calculate packet tx/rx duration in rtimer ticks based on sent
+ * packet len in bytes with 802.15.4 250kbps data rate.
+ * One byte = 32us. Add two bytes for CRC and one for len field */
+#define TSCH_PACKET_DURATION(len) US_TO_RTIMERTICKS(32 * ((len) + 3))
+
+/* Convert rtimer ticks to clock and vice versa */
+#define TSCH_CLOCK_TO_TICKS(c) (((c) * RTIMER_SECOND) / CLOCK_SECOND)
+#define TSCH_CLOCK_TO_SLOTS(c, timeslot_length) (TSCH_CLOCK_TO_TICKS(c) / timeslot_length)
+
+/* Wait for a condition with timeout t0+offset. */
+#define BUSYWAIT_UNTIL_ABS(cond, t0, offset) \
+  while(!(cond) && RTIMER_CLOCK_LT(RTIMER_NOW(), (t0) + (offset))) ;
+
+#endif /* __TSCH_PRIVATE_H__ */