roll-tm.c File Reference

Implementation of the ROLL TM multicast engine. More...

#include "contiki.h"
#include "contiki-lib.h"
#include "contiki-net.h"
#include "net/ipv6/uip-icmp6.h"
#include "net/ipv6/multicast/uip-mcast6.h"
#include "net/ipv6/multicast/roll-tm.h"
#include "dev/watchdog.h"
#include <string.h>
#include "net/ip/uip-debug.h"

Go to the source code of this file.

Macros
#define	TRICKLE_TIME(m, d)   ((clock_time_t)((m) << (d)))
	Convert a timer to a sane clock_time_t value after d doublings m is a value of Imin, d is a number of doublings Careful of overflows.
#define	TRICKLE_IMAX(t)   ((uint32_t)((t)->i_min << (t)->i_max))
	Convert Imax from number of doublings to clock_time_t units for trickle_param t. More...
#define	TRICKLE_ACTIVE(t)   ((uint32_t)(TRICKLE_IMAX(t) * t->t_active))
	Convert Tactive for a trickle timer to a sane clock_time_t value t is a pointer to the timer Careful of overflows.
#define	TRICKLE_DWELL(t)   ((uint32_t)(TRICKLE_IMAX(t) * t->t_dwell))
	Convert Tdwell for a trickle timer to a sane clock_time_t value t is a pointer to the timer Careful of overflows.
#define	SUPPRESSION_ENABLED(t)   ((t)->k != ROLL_TM_INFINITE_REDUNDANCY)
	Check if suppression is enabled for trickle_param t t is a pointer to the timer.
#define	SUPPRESSION_DISABLED(t)   ((t)->k == ROLL_TM_INFINITE_REDUNDANCY)
	Check if suppression is disabled for trickle_param t t is a pointer to the timer.
#define	TIMER_CONFIGURE(m)
	Init trickle_timer[m].
#define	SEQ_VAL_IS_EQ(i1, i2)   ((i1) == (i2))
	s1 is said to be equal s2 iif SEQ_VAL_IS_EQ(s1, s2) == 1
#define	SEQ_VAL_IS_LT(i1, i2)
	s1 is said to be less than s2 iif SEQ_VAL_IS_LT(s1, s2) == 1
#define	SEQ_VAL_IS_GT(i1, i2)
	s1 is said to be greater than s2 iif SEQ_VAL_IS_LT(s1, s2) == 1
#define	SEQ_VAL_ADD(s, n)   (((s) + (n)) % 0x8000)
	Add n to s: (s + n) modulo (2 ^ SERIAL_BITS) => ((s + n) % 0x8000)
#define	SLIDING_WINDOW_IS_USED(w)   ((w)->flags & SLIDING_WINDOW_U_BIT)
	Is Occupied sliding window location w w: pointer to a sliding window.
#define	SLIDING_WINDOW_IS_USED_SET(w)   ((w)->flags |= SLIDING_WINDOW_U_BIT)
	Set 'Is Used' bit for window w w: pointer to a sliding window.
#define	SLIDING_WINDOW_IS_USED_CLR(w)   ((w)->flags &= ~SLIDING_WINDOW_U_BIT)
	Clear 'Is Used' bit for window w w: pointer to a sliding window.
#define	SLIDING_WINDOW_LISTED_SET(w)   ((w)->flags |= SLIDING_WINDOW_L_BIT)
	Set 'Is Seen' bit for window w w: pointer to a sliding window.
#define	SLIDING_WINDOW_LISTED_CLR(w)   ((w)->flags &= ~SLIDING_WINDOW_L_BIT)
	Clear 'Is Seen' bit for window w w: pointer to a sliding window.
#define	SLIDING_WINDOW_IS_LISTED(w)   ((w)->flags & SLIDING_WINDOW_L_BIT)
	Is the sliding window at location w listed in current ICMP message? w: pointer to a sliding window.
#define	SLIDING_WINDOW_M_SET(w)   ((w)->flags |= SLIDING_WINDOW_M_BIT)
	Set M bit for window w w: pointer to a sliding window.
#define	SLIDING_WINDOW_M_CLR(w)   ((w)->flags &= ~SLIDING_WINDOW_M_BIT)
	Clear M bit for window w w: pointer to a sliding window.
#define	SLIDING_WINDOW_GET_M(w)   ((uint8_t)(((w)->flags & SLIDING_WINDOW_M_BIT) == SLIDING_WINDOW_M_BIT))
	Retrieve trickle parametrization for sliding window at location w w: pointer to a sliding window.
#define	MCAST_PACKET_TTL(p)   (((struct uip_ip_hdr *)(p)->buff)->ttl)
	Get the TTL of a buffered packet p: pointer to a packet buffer.
#define	MCAST_PACKET_USED_SET(p)   ((p)->flags |= MCAST_PACKET_U_BIT)
	Set 'Is Used' bit for packet p p: pointer to a packet buffer.
#define	MCAST_PACKET_USED_CLR(p)   ((p)->flags &= ~MCAST_PACKET_U_BIT)
	Clear 'Is Used' bit for packet p p: pointer to a packet buffer.
#define	MCAST_PACKET_IS_USED(p)   ((p)->flags & MCAST_PACKET_U_BIT)
	Is Occupied buffer location p.
#define	MCAST_PACKET_MUST_SEND(p)   ((p)->flags & MCAST_PACKET_S_BIT)
	Must we send this message this pass?
#define	MCAST_PACKET_SEND_SET(p)   ((p)->flags |= MCAST_PACKET_S_BIT)
	Set 'Must Send' bit for message p p: pointer to a struct mcast_packet.
#define	MCAST_PACKET_SEND_CLR(p)   ((p)->flags &= ~MCAST_PACKET_S_BIT)
	Clear 'Must Send' bit for message p p: pointer to a struct mcast_packet.
#define	MCAST_PACKET_IS_LISTED(p)   ((p)->flags & MCAST_PACKET_L_BIT)
	Is the message p listed in current ICMP message? p: pointer to a struct mcast_packet.
#define	MCAST_PACKET_LISTED_SET(p)   ((p)->flags |= MCAST_PACKET_L_BIT)
	Set 'Is Listed' bit for message p p: pointer to a struct mcast_packet.
#define	MCAST_PACKET_LISTED_CLR(p)   ((p)->flags &= ~MCAST_PACKET_L_BIT)
	Clear 'Is Listed' bit for message p p: pointer to a struct mcast_packet.
#define	MCAST_PACKET_FREE(p)   ((p)->flags = 0)
	Free a multicast packet buffer p: pointer to a struct mcast_packet.
#define	SEQUENCE_LIST_GET_M(l)   ((uint8_t)(((l)->flags & SEQUENCE_LIST_M_BIT) == SEQUENCE_LIST_M_BIT))
	Get the Trickle Parametrization for an ICMPv6 sequence list l: pointer to a sequence list structure.
#define	SEQUENCE_LIST_GET_S(l)   ((uint8_t)(((l)->flags & SEQUENCE_LIST_S_BIT) == SEQUENCE_LIST_S_BIT))
	Get the Seed ID Length for an ICMPv6 sequence list l: pointer to a sequence list structure.
#define	HBH_GET_M(h)   (((h)->flags & 0x80) == 0x80)
	Get the Trickle Parametrization for a multicast HBHO header m: pointer to the HBHO header.
#define	HBH_SET_M(h)   ((h)->flags |= 0x80)
	Set the Trickle Parametrization bit for a multicast HBHO header m: pointer to the HBHO header.
#define	HBH_GET_SV_MSB(h)   ((h)->flags & 0x7F)
	Retrieve the Sequence Value MSB from a multicast HBHO header m: pointer to the HBHO header.

Functions
static uint8_t	accept (uint8_t in)
	Processes an incoming or outgoing multicast message and determines whether it should be dropped or accepted. More...

Variables
const struct uip_mcast6_driver	roll_tm_driver
	The ROLL TM engine driver.

Detailed Description

Implementation of the ROLL TM multicast engine.

Author

George Oikonomou - oikon.nosp@m.omou.nosp@m.@user.nosp@m.s.so.nosp@m.urcef.nosp@m.orge.nosp@m..net

Definition in file roll-tm.c.