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Split the RPL header into a private and a public header.

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This commit is contained in:
nvt 2011-02-11 16:21:17 +01:00
parent 0fd6dea8d8
commit 20171985c6
8 changed files with 303 additions and 286 deletions
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3
core/net/rpl/rpl-dag.c
View file

@ -32,7 +32,6 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* $Id: rpl-dag.c,v 1.43 2011/01/04 20:43:28 nvt-se Exp $
*/ */
/** /**
* \file * \file
@ -41,9 +40,9 @@
* \author Joakim Eriksson <joakime@sics.se>, Nicolas Tsiftes <nvt@sics.se> * \author Joakim Eriksson <joakime@sics.se>, Nicolas Tsiftes <nvt@sics.se>
*/ */
#include "net/rpl/rpl.h"
#include "contiki.h" #include "contiki.h"
#include "net/rpl/rpl-private.h"
#include "net/uip.h" #include "net/uip.h"
#include "net/uip-nd6.h" #include "net/uip-nd6.h"
#include "lib/list.h" #include "lib/list.h"

3
core/net/rpl/rpl-icmp6.c
View file

@ -32,7 +32,6 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* $Id: rpl-icmp6.c,v 1.35 2011/01/25 09:55:12 joxe Exp $
*/ */
/** /**
* \file * \file
@ -48,7 +47,7 @@
#include "net/uip-ds6.h" #include "net/uip-ds6.h"
#include "net/uip-nd6.h" #include "net/uip-nd6.h"
#include "net/uip-icmp6.h" #include "net/uip-icmp6.h"
#include "net/rpl/rpl.h" #include "net/rpl/rpl-private.h"
#include "net/packetbuf.h" #include "net/packetbuf.h"
#include <limits.h> #include <limits.h>

17
core/net/rpl/rpl-of-etx.c
View file

@ -32,7 +32,6 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* $Id: rpl-of-etx.c,v 1.8 2010/11/03 15:41:23 adamdunkels Exp $
*/ */
/** /**
* \file * \file
@ -44,13 +43,13 @@
* \author Joakim Eriksson <joakime@sics.se>, Nicolas Tsiftes <nvt@sics.se> * \author Joakim Eriksson <joakime@sics.se>, Nicolas Tsiftes <nvt@sics.se>
*/ */
#include "net/rpl/rpl.h" #include "net/rpl/rpl-private.h"
#include "net/neighbor-info.h" #include "net/neighbor-info.h"
#define DEBUG DEBUG_NONE #define DEBUG DEBUG_NONE
#include "net/uip-debug.h" #include "net/uip-debug.h"
static void reset(void *); static void reset(rpl_dag_t *);
static void parent_state_callback(rpl_parent_t *, int, int); static void parent_state_callback(rpl_parent_t *, int, int);
static rpl_parent_t *best_parent(rpl_parent_t *, rpl_parent_t *); static rpl_parent_t *best_parent(rpl_parent_t *, rpl_parent_t *);
static rpl_rank_t calculate_rank(rpl_parent_t *, rpl_rank_t); static rpl_rank_t calculate_rank(rpl_parent_t *, rpl_rank_t);
@ -84,7 +83,7 @@ rpl_of_t rpl_of_etx = {
static rpl_rank_t min_path_cost = INFINITE_RANK; static rpl_rank_t min_path_cost = INFINITE_RANK;
static void static void
reset(void *dag) reset(rpl_dag_t *dag)
{ {
min_path_cost = INFINITE_RANK; min_path_cost = INFINITE_RANK;
} }
@ -92,12 +91,8 @@ reset(void *dag)
static void static void
parent_state_callback(rpl_parent_t *parent, int known, int etx) parent_state_callback(rpl_parent_t *parent, int known, int etx)
{ {
rpl_dag_t *dag;
dag = (rpl_dag_t *)parent->dag;
if(!known) { if(!known) {
if(RPL_PARENT_COUNT(dag) == 1) { if(RPL_PARENT_COUNT(parent->dag) == 1) {
/* Our last parent has disappeared, set the path ETX to INFINITE_RANK. */ /* Our last parent has disappeared, set the path ETX to INFINITE_RANK. */
min_path_cost = INFINITE_RANK; min_path_cost = INFINITE_RANK;
} }
@ -107,7 +102,6 @@ parent_state_callback(rpl_parent_t *parent, int known, int etx)
static rpl_rank_t static rpl_rank_t
calculate_rank(rpl_parent_t *p, rpl_rank_t base_rank) calculate_rank(rpl_parent_t *p, rpl_rank_t base_rank)
{ {
rpl_dag_t *dag;
rpl_rank_t new_rank; rpl_rank_t new_rank;
rpl_rank_t rank_increase; rpl_rank_t rank_increase;
@ -117,11 +111,10 @@ calculate_rank(rpl_parent_t *p, rpl_rank_t base_rank)
} }
rank_increase = INITIAL_LINK_METRIC * DEFAULT_MIN_HOPRANKINC; rank_increase = INITIAL_LINK_METRIC * DEFAULT_MIN_HOPRANKINC;
} else { } else {
dag = (rpl_dag_t *)p->dag;
if(p->etx == 0) { if(p->etx == 0) {
p->etx = INITIAL_LINK_METRIC * ETX_DIVISOR; p->etx = INITIAL_LINK_METRIC * ETX_DIVISOR;
} }
rank_increase = (p->etx * dag->min_hoprankinc) / ETX_DIVISOR; rank_increase = (p->etx * p->dag->min_hoprankinc) / ETX_DIVISOR;
if(base_rank == 0) { if(base_rank == 0) {
base_rank = p->rank; base_rank = p->rank;
} }

28
core/net/rpl/rpl-of0.c
View file

@ -31,8 +31,6 @@
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
*
* $Id: rpl-of0.c,v 1.6 2011/01/04 20:43:28 nvt-se Exp $
*/ */
/** /**
* \file * \file
@ -41,14 +39,14 @@
* \author Joakim Eriksson <joakime@sics.se>, Nicolas Tsiftes <nvt@sics.se> * \author Joakim Eriksson <joakime@sics.se>, Nicolas Tsiftes <nvt@sics.se>
*/ */
#include "net/rpl/rpl.h" #include "net/rpl/rpl-private.h"
#define DEBUG DEBUG_ANNOTATE #define DEBUG DEBUG_ANNOTATE
#include "net/uip-debug.h" #include "net/uip-debug.h"
#include "net/neighbor-info.h" #include "net/neighbor-info.h"
static void reset(void *); static void reset(rpl_dag_t *);
static rpl_parent_t *best_parent(rpl_parent_t *, rpl_parent_t *); static rpl_parent_t *best_parent(rpl_parent_t *, rpl_parent_t *);
static rpl_rank_t calculate_rank(rpl_parent_t *, rpl_rank_t); static rpl_rank_t calculate_rank(rpl_parent_t *, rpl_rank_t);
@ -63,7 +61,7 @@ rpl_of_t rpl_of0 = {
#define DEFAULT_RANK_INCREMENT DEFAULT_MIN_HOPRANKINC #define DEFAULT_RANK_INCREMENT DEFAULT_MIN_HOPRANKINC
static void static void
reset(void *dag) reset(rpl_dag_t *dag)
{ {
PRINTF("RPL: Resetting OF0\n"); PRINTF("RPL: Resetting OF0\n");
} }
@ -108,24 +106,4 @@ best_parent(rpl_parent_t *p1, rpl_parent_t *p2)
} else { } else {
return p2; return p2;
} }
/* This is the old code, which isn't used now, but left here in case
we would like to use it later (if the above code turns out to not
work as well as we expect it to. The old code first favoured the
parent with a lower rank, then used the ETX to compare two
parents with the same rank. This is not ideal since you may have
a parent with a low rank on the edge of your range that will have
a very bad ETX. But the code below would nevertheless pick that
one. */
if(p1->rank < p2->rank) {
return p1;
} else if(p2->rank < p1->rank) {
return p2;
}
if(p1->etx < p2->etx) {
return p1;
} else {
return p2;
}
} }

269
core/net/rpl/rpl-private.h Normal file
View file

@ -0,0 +1,269 @@
/*
* Copyright (c) 2010, Swedish Institute of Computer Science.
* 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.
*
* Author: Joakim Eriksson, Nicolas Tsiftes
*/
#ifndef RPL_PRIVATE_H
#define RPL_PRIVATE_H
/*
* ContikiRPL - an implementation of the routing protocol for low power and
* lossy networks. See: draft-ietf-roll-rpl-17.
*
* --
* The DIOs handle prefix information option for setting global IP addresses
* on the nodes, but the current handling is not awaiting the join of the DAG
* so it does not currently support multiple DAGs.
*/
#include "net/rpl/rpl.h"
#include "lib/list.h"
#include "net/uip.h"
#include "sys/clock.h"
#include "sys/ctimer.h"
#include "net/uip-ds6.h"
/** \brief Is IPv6 address a the link local all rpl nodes multicast address */
#define uip_is_addr_linklocal_rplnodes_mcast(a) \
((((a)->u8[0]) == 0xff) && \
(((a)->u8[1]) == 0x02) && \
(((a)->u16[1]) == 0) && \
(((a)->u16[2]) == 0) && \
(((a)->u16[3]) == 0) && \
(((a)->u16[4]) == 0) && \
(((a)->u16[5]) == 0) && \
(((a)->u16[6]) == 0) && \
(((a)->u8[14]) == 0) && \
(((a)->u8[15]) == 0x1a))
/** \brief set IP address a to the link local all-rpl nodes multicast address */
#define uip_create_linklocal_rplnodes_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x001a)
/* The RPL Codes for the message types */
#define RPL_CODE_DIS 0 /* DIS message */
#define RPL_CODE_DIO 1 /* DIO message */
#define RPL_CODE_DAO 2 /* DAO message */
#define RPL_CODE_DAO_ACK 3 /* DAO ACK message */
#define RPL_CODE_SEC_DIS 0x80 /* DIS message */
#define RPL_CODE_SEC_DIO 0x81 /* DIO message */
#define RPL_CODE_SEC_DAO 0x82 /* DAO message */
#define RPL_CODE_SEC_DAO_ACK 0x83 /* DAO ACK message */
/* RPL DIO/DAO suboption types */
#define RPL_DIO_SUBOPT_PAD1 0 /* Pad1 */
#define RPL_DIO_SUBOPT_PADN 1 /* PadN */
#define RPL_DIO_SUBOPT_DAG_MC 2 /* DAG metric container */
#define RPL_DIO_SUBOPT_ROUTE_INFO 3 /* Route information */
#define RPL_DIO_SUBOPT_DAG_CONF 4 /* DAG configuration */
#define RPL_DIO_SUBOPT_TARGET 5 /* Target */
#define RPL_DIO_SUBOPT_TRANSIT 6 /* Transit information */
#define RPL_DIO_SUBOPT_SOLICITED_INFO 7 /* Solicited information */
#define RPL_DIO_SUBOPT_PREFIX_INFO 8 /* Prefix information option */
#define RPL_DAO_K_FLAG 0x80 /* DAO ACK requested */
#define RPL_DAO_D_FLAG 0x40 /* DODAG ID Present */
/*---------------------------------------------------------------------------*/
/* Default values for RPL constants and variables. */
/* The default value for the DAO timer. */
#define DEFAULT_DAO_LATENCY (CLOCK_SECOND * 8)
/* Special value indicating immediate removal. */
#define ZERO_LIFETIME 0
/* Special value indicating that a DAO should not expire. */
#define INFINITE_LIFETIME 0xffffffff
/* Default route lifetime in seconds. */
#define DEFAULT_ROUTE_LIFETIME INFINITE_LIFETIME
#define DEFAULT_RPL_LIFETIME_UNIT 0xffff
#define DEFAULT_RPL_DEF_LIFETIME 0xff
#ifndef RPL_CONF_MIN_HOPRANKINC
#define DEFAULT_MIN_HOPRANKINC 256
#else
#define DEFAULT_MIN_HOPRANKINC RPL_CONF_MIN_HOPRANKINC
#endif
#define DEFAULT_MAX_RANKINC (3 * DEFAULT_MIN_HOPRANKINC)
#define DAG_RANK(fixpt_rank, dag) ((fixpt_rank) / (dag)->min_hoprankinc)
/* Rank of a node outside the LLN. */
#define BASE_RANK 0
/* Rank of a root node. */
#define ROOT_RANK DEFAULT_MIN_HOPRANKINC
#define INFINITE_RANK 0xffff
/* Represents 2^n ms. */
/* Default alue according to the specification is 3 which
means 8 milliseconds - this is not a reasonable value if
using power-saving / duty-cycling */
#define DEFAULT_DIO_INTERVAL_MIN 12
/* Maximum amount of timer doublings. */
#define DEFAULT_DIO_INTERVAL_DOUBLINGS 8
/* Default DIO redundancy. */
#define DEFAULT_DIO_REDUNDANCY 10
/* Expire DAOs from neighbors that do not respond in this time. (seconds) */
#define DAO_EXPIRATION_TIMEOUT 60
/*---------------------------------------------------------------------------*/
#define RPL_INSTANCE_LOCAL_FLAG 0x80
#define RPL_INSTANCE_D_FLAG 0x40
/* Values that tell where a route came from. */
#define RPL_ROUTE_FROM_INTERNAL 0
#define RPL_ROUTE_FROM_UNICAST_DAO 1
#define RPL_ROUTE_FROM_MULTICAST_DAO 2
#define RPL_ROUTE_FROM_DIO 3
/* DAG Mode of Operation */
#define RPL_MOP_NO_DOWNWARD_ROUTES 0
#define RPL_MOP_NON_STORING 1
#define RPL_MOP_STORING_NO_MULTICAST 2
#define RPL_MOP_STORING_MULTICAST 3
#define RPL_MOP_DEFAULT RPL_MOP_STORING_NO_MULTICAST
/* DAG Metric Container Object Types, to be confirmed by IANA. */
#define RPL_DAG_MC_NSA 1 /* Node State and Attributes */
#define RPL_DAG_MC_NE 2 /* Node Energy */
#define RPL_DAG_MC_HC 3 /* Hop Count */
#define RPL_DAG_MC_THROUGHPUT 4 /* Throughput */
#define RPL_DAG_MC_LATENCY 5 /* Latency */
#define RPL_DAG_MC_LQL 6 /* Link Quality Level */
#define RPL_DAG_MC_ETX 7 /* Expected Transmission Count */
#define RPL_DAG_MC_LC 8 /* Link Color */
/* DIS related */
#define RPL_DIS_SEND 1
#ifdef RPL_DIS_INTERVAL_CONF
#define RPL_DIS_INTERVAL RPL_DIS_INTERVAL_CONF
#else
#define RPL_DIS_INTERVAL 60
#endif
#define RPL_DIS_START_DELAY 5
/*---------------------------------------------------------------------------*/
/* Logical representation of a DAG Information Object (DIO.) */
struct rpl_dio {
uip_ipaddr_t dag_id;
rpl_ocp_t ocp;
rpl_rank_t rank;
uint8_t grounded;
uint8_t mop;
uint8_t preference;
uint8_t version;
uint8_t instance_id;
uint8_t dtsn;
uint8_t dag_intdoubl;
uint8_t dag_intmin;
uint8_t dag_redund;
uint8_t default_lifetime;
uint16_t lifetime_unit;
rpl_rank_t dag_max_rankinc;
rpl_rank_t dag_min_hoprankinc;
rpl_prefix_t destination_prefix;
rpl_prefix_t prefix_info;
};
typedef struct rpl_dio rpl_dio_t;
#if RPL_CONF_STATS
/* Statistics for fault management. */
struct rpl_stats {
uint16_t mem_overflows;
uint16_t local_repairs;
uint16_t global_repairs;
uint16_t malformed_msgs;
uint16_t resets;
};
typedef struct rpl_stats rpl_stats_t;
extern rpl_stats_t rpl_stats;
#endif
/*---------------------------------------------------------------------------*/
/* RPL macros. */
#if RPL_CONF_STATS
#define RPL_STAT(code) (code)
#else
#define RPL_STAT(code)
#endif /* RPL_CONF_STATS */
/*---------------------------------------------------------------------------*/
/* ICMPv6 functions for RPL. */
void dis_output(uip_ipaddr_t *addr);
void dio_output(rpl_dag_t *, uip_ipaddr_t *uc_addr);
void dao_output(rpl_parent_t *, uint32_t lifetime);
void dao_ack_output(rpl_dag_t *, uip_ipaddr_t *, uint8_t);
void uip_rpl_input(void);
/* RPL logic functions. */
void rpl_join_dag(rpl_dag_t *);
void rpl_local_repair(rpl_dag_t *dag);
int rpl_set_default_route(rpl_dag_t *dag, uip_ipaddr_t *from);
void rpl_process_dio(uip_ipaddr_t *, rpl_dio_t *);
int rpl_process_parent_event(rpl_dag_t *, rpl_parent_t *);
/* DAG object management. */
rpl_dag_t *rpl_alloc_dag(uint8_t);
void rpl_free_dag(rpl_dag_t *);
/* DAG parent management function. */
rpl_parent_t *rpl_add_parent(rpl_dag_t *, rpl_dio_t *dio, uip_ipaddr_t *);
rpl_parent_t *rpl_find_parent(rpl_dag_t *, uip_ipaddr_t *);
int rpl_remove_parent(rpl_dag_t *, rpl_parent_t *);
rpl_parent_t *rpl_select_parent(rpl_dag_t *dag);
void rpl_recalculate_ranks(void);
/* RPL routing table functions. */
void rpl_remove_routes(rpl_dag_t *dag);
uip_ds6_route_t *rpl_add_route(rpl_dag_t *dag, uip_ipaddr_t *prefix,
int prefix_len, uip_ipaddr_t *next_hop);
void rpl_purge_routes(void);
/* Objective function. */
rpl_of_t *rpl_find_of(rpl_ocp_t);
/* Timer functions. */
void rpl_schedule_dao(rpl_dag_t *);
void rpl_reset_dio_timer(rpl_dag_t *, uint8_t);
void rpl_reset_periodic_timer(void);
/* Route poisoning. */
void rpl_poison_routes(rpl_dag_t *, rpl_parent_t *);
#endif /* RPL_PRIVATE_H */

4
core/net/rpl/rpl-timers.c
View file

@ -31,8 +31,6 @@
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
*
* $Id: rpl-timers.c,v 1.16 2010/12/17 15:24:25 nvt-se Exp $
*/ */
/** /**
* \file * \file
@ -42,7 +40,7 @@
*/ */
#include "contiki-conf.h" #include "contiki-conf.h"
#include "net/rpl/rpl.h" #include "net/rpl/rpl-private.h"
#include "lib/random.h" #include "lib/random.h"
#include "sys/ctimer.h" #include "sys/ctimer.h"

4
core/net/rpl/rpl.c
View file

@ -31,8 +31,6 @@
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
*
* $Id: rpl.c,v 1.15 2011/01/25 22:41:30 joxe Exp $
*/ */
/** /**
* \file * \file
@ -44,7 +42,7 @@
#include "net/uip.h" #include "net/uip.h"
#include "net/tcpip.h" #include "net/tcpip.h"
#include "net/uip-ds6.h" #include "net/uip-ds6.h"
#include "net/rpl/rpl.h" #include "net/rpl/rpl-private.h"
#include "net/neighbor-info.h" #include "net/neighbor-info.h"
#define DEBUG DEBUG_NONE #define DEBUG DEBUG_NONE

261
core/net/rpl/rpl.h
View file

@ -28,46 +28,21 @@
* *
* This file is part of the Contiki operating system. * This file is part of the Contiki operating system.
* *
* Author: Joakim Eriksson, Nicolas Tsiftes * \file
* ContikiRPL - an implementation of the routing protocol for low
* power and lossy networks. See: draft-ietf-roll-rpl-17.
* \author
* Joakim Eriksson <joakime@sics.se> & Nicolas Tsiftes <nvt@sics.se>
* *
* $Id: rpl.h,v 1.30 2011/01/25 09:54:03 joxe Exp $
*/ */
#ifndef RPL_H #ifndef RPL_H
#define RPL_H #define RPL_H
/*
* ContikiRPL - an implementation of the routing protocol for low power and
* lossy networks. See: draft-ietf-roll-rpl-09.
*
* --
* The DIOs handle prefix information option for setting global IP addresses
* on the nodes, but the current handling is not awaiting the join of the DAG
* so it does not currently support multiple DAGs.
*/
#include "lib/list.h" #include "lib/list.h"
#include "net/uip.h" #include "net/uip.h"
#include "sys/clock.h"
#include "sys/ctimer.h"
#include "net/uip-ds6.h" #include "net/uip-ds6.h"
#include "sys/ctimer.h"
/** \brief Is IPv6 address a the link local all rpl nodes multicast address */
#define uip_is_addr_linklocal_rplnodes_mcast(a) \
((((a)->u8[0]) == 0xff) && \
(((a)->u8[1]) == 0x02) && \
(((a)->u16[1]) == 0) && \
(((a)->u16[2]) == 0) && \
(((a)->u16[3]) == 0) && \
(((a)->u16[4]) == 0) && \
(((a)->u16[5]) == 0) && \
(((a)->u16[6]) == 0) && \
(((a)->u8[14]) == 0) && \
(((a)->u8[15]) == 0x1a))
/** \brief set IP address a to the link local all-rpl nodes multicast address */
#define uip_create_linklocal_rplnodes_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x001a)
/* set to 1 for some statistics on trickle / DIO */ /* set to 1 for some statistics on trickle / DIO */
#ifndef RPL_CONF_STATS #ifndef RPL_CONF_STATS
@ -86,134 +61,31 @@
#define RPL_OF rpl_of_etx #define RPL_OF rpl_of_etx
#endif /* RPL_CONF_OF */ #endif /* RPL_CONF_OF */
/* The RPL Codes for the message types */ /* This value decides which DAG instance we should participate in by default. */
#define RPL_CODE_DIS 0 /* DIS message */ #define RPL_DEFAULT_INSTANCE 0
#define RPL_CODE_DIO 1 /* DIO message */
#define RPL_CODE_DAO 2 /* DAO message */
#define RPL_CODE_DAO_ACK 3 /* DAO ACK message */
#define RPL_CODE_SEC_DIS 0x80 /* DIS message */ /* This value is used to access an arbitrary DAG. It will likely be
#define RPL_CODE_SEC_DIO 0x81 /* DIO message */ replaced when we support multiple DAGs more. */
#define RPL_CODE_SEC_DAO 0x82 /* DAO message */
#define RPL_CODE_SEC_DAO_ACK 0x83 /* DAO ACK message */
/* RPL DIO/DAO suboption types */
#define RPL_DIO_SUBOPT_PAD1 0 /* Pad1 */
#define RPL_DIO_SUBOPT_PADN 1 /* PadN */
#define RPL_DIO_SUBOPT_DAG_MC 2 /* DAG metric container */
#define RPL_DIO_SUBOPT_ROUTE_INFO 3 /* Route information */
#define RPL_DIO_SUBOPT_DAG_CONF 4 /* DAG configuration */
#define RPL_DIO_SUBOPT_TARGET 5 /* Target */
#define RPL_DIO_SUBOPT_TRANSIT 6 /* Transit information */
#define RPL_DIO_SUBOPT_SOLICITED_INFO 7 /* Solicited information */
#define RPL_DIO_SUBOPT_PREFIX_INFO 8 /* Prefix information option */
#define RPL_DAO_K_FLAG 0x80 /* DAO ACK requested */
#define RPL_DAO_D_FLAG 0x40 /* DODAG ID Present */
/*---------------------------------------------------------------------------*/
/* Default values for RPL constants and variables. */
/* The default value for the DAO timer. */
#define DEFAULT_DAO_LATENCY (CLOCK_SECOND * 8)
/* Special value indicating immediate removal. */
#define ZERO_LIFETIME 0
/* Special value indicating that a DAO should not expire. */
#define INFINITE_LIFETIME 0xffffffff
/* Default route lifetime in seconds. */
#define DEFAULT_ROUTE_LIFETIME INFINITE_LIFETIME
#define DEFAULT_RPL_LIFETIME_UNIT 0xffff
#define DEFAULT_RPL_DEF_LIFETIME 0xff
#ifndef RPL_CONF_MIN_HOPRANKINC
#define DEFAULT_MIN_HOPRANKINC 256
#else
#define DEFAULT_MIN_HOPRANKINC RPL_CONF_MIN_HOPRANKINC
#endif
#define DEFAULT_MAX_RANKINC (3 * DEFAULT_MIN_HOPRANKINC)
#define DAG_RANK(fixpt_rank, dag) ((fixpt_rank) / (dag)->min_hoprankinc)
/* Rank of a node outside the LLN. */
#define BASE_RANK 0
/* Rank of a root node. */
#define ROOT_RANK DEFAULT_MIN_HOPRANKINC
#define INFINITE_RANK 0xffff
#define RPL_DEFAULT_INSTANCE 0
#define RPL_ANY_INSTANCE -1 #define RPL_ANY_INSTANCE -1
/* Represents 2^n ms. */
/* Default alue according to the specification is 3 which
means 8 milliseconds - this is not a reasonable value if
using power-saving / duty-cycling */
#define DEFAULT_DIO_INTERVAL_MIN 12
/* Maximum amount of timer doublings. */
#define DEFAULT_DIO_INTERVAL_DOUBLINGS 8
/* Default DIO redundancy. */
#define DEFAULT_DIO_REDUNDANCY 10
/* Expire DAOs from neighbors that do not respond in this time. (seconds) */
#define DAO_EXPIRATION_TIMEOUT 60
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
#define RPL_INSTANCE_LOCAL_FLAG 0x80 /* The amount of parents that this node has in a particular DAG. */
#define RPL_INSTANCE_D_FLAG 0x40 #define RPL_PARENT_COUNT(dag) list_length((dag)->parents)
/*---------------------------------------------------------------------------*/
/* Values that tell where a route came from. */
#define RPL_ROUTE_FROM_INTERNAL 0
#define RPL_ROUTE_FROM_UNICAST_DAO 1
#define RPL_ROUTE_FROM_MULTICAST_DAO 2
#define RPL_ROUTE_FROM_DIO 3
/* DAG Mode of Operation */
#define RPL_MOP_NO_DOWNWARD_ROUTES 0
#define RPL_MOP_NON_STORING 1
#define RPL_MOP_STORING_NO_MULTICAST 2
#define RPL_MOP_STORING_MULTICAST 3
#define RPL_MOP_DEFAULT RPL_MOP_STORING_NO_MULTICAST
/* DAG Metric Container Object Types, to be confirmed by IANA. */
#define RPL_DAG_MC_NSA 1 /* Node State and Attributes */
#define RPL_DAG_MC_NE 2 /* Node Energy */
#define RPL_DAG_MC_HC 3 /* Hop Count */
#define RPL_DAG_MC_THROUGHPUT 4 /* Throughput */
#define RPL_DAG_MC_LATENCY 5 /* Latency */
#define RPL_DAG_MC_LQL 6 /* Link Quality Level */
#define RPL_DAG_MC_ETX 7 /* Expected Transmission Count */
#define RPL_DAG_MC_LC 8 /* Link Color */
/* DIS related */
#define RPL_DIS_SEND 1
#ifdef RPL_DIS_INTERVAL_CONF
#define RPL_DIS_INTERVAL RPL_DIS_INTERVAL_CONF
#else
#define RPL_DIS_INTERVAL 60
#endif
#define RPL_DIS_START_DELAY 5
typedef uint16_t rpl_rank_t; typedef uint16_t rpl_rank_t;
typedef uint16_t rpl_ocp_t; typedef uint16_t rpl_ocp_t;
struct rpl_dag;
/*---------------------------------------------------------------------------*/
struct rpl_parent { struct rpl_parent {
struct rpl_parent *next; struct rpl_parent *next;
void *dag; struct rpl_dag *dag;
uip_ipaddr_t addr; uip_ipaddr_t addr;
rpl_rank_t rank; rpl_rank_t rank;
uint8_t etx; uint8_t etx;
uint8_t dtsn; uint8_t dtsn;
uint8_t updated; uint8_t updated;
}; };
typedef struct rpl_parent rpl_parent_t; typedef struct rpl_parent rpl_parent_t;
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/* /*
* API for RPL objective functions (OF) * API for RPL objective functions (OF)
@ -241,16 +113,14 @@ typedef struct rpl_parent rpl_parent_t;
* about "parent" to select an increment to the "base_rank". * about "parent" to select an increment to the "base_rank".
*/ */
struct rpl_of { struct rpl_of {
void (*reset)(void *); void (*reset)(struct rpl_dag *);
void (*parent_state_callback)(rpl_parent_t *, int, int); void (*parent_state_callback)(rpl_parent_t *, int, int);
rpl_parent_t *(*best_parent)(rpl_parent_t *, rpl_parent_t *); rpl_parent_t *(*best_parent)(rpl_parent_t *, rpl_parent_t *);
rpl_rank_t (*calculate_rank)(rpl_parent_t *, rpl_rank_t); rpl_rank_t (*calculate_rank)(rpl_parent_t *, rpl_rank_t);
rpl_ocp_t ocp; rpl_ocp_t ocp;
}; };
typedef struct rpl_of rpl_of_t; typedef struct rpl_of rpl_of_t;
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/* RPL DIO prefix suboption */ /* RPL DIO prefix suboption */
struct rpl_prefix { struct rpl_prefix {
uip_ipaddr_t prefix; uip_ipaddr_t prefix;
@ -258,51 +128,8 @@ struct rpl_prefix {
uint8_t length; uint8_t length;
uint8_t flags; uint8_t flags;
}; };
typedef struct rpl_prefix rpl_prefix_t; typedef struct rpl_prefix rpl_prefix_t;
/*---------------------------------------------------------------------------*/
/* Logical representation of a DAG Information Object (DIO.) */
struct rpl_dio {
uip_ipaddr_t dag_id;
rpl_ocp_t ocp;
rpl_rank_t rank;
uint8_t grounded;
uint8_t mop;
uint8_t preference;
uint8_t version;
uint8_t instance_id;
uint8_t dtsn;
uint8_t dag_intdoubl;
uint8_t dag_intmin;
uint8_t dag_redund;
uint8_t default_lifetime;
uint16_t lifetime_unit;
rpl_rank_t dag_max_rankinc;
rpl_rank_t dag_min_hoprankinc;
rpl_prefix_t destination_prefix;
rpl_prefix_t prefix_info;
};
typedef struct rpl_dio rpl_dio_t;
#if RPL_CONF_STATS
/* Statistics for fault management. */
struct rpl_stats {
uint16_t mem_overflows;
uint16_t local_repairs;
uint16_t global_repairs;
uint16_t malformed_msgs;
uint16_t resets;
};
typedef struct rpl_stats rpl_stats_t;
extern rpl_stats_t rpl_stats;
#define RPL_STAT(code) (code)
#else
#define RPL_STAT(code)
#endif /* RPL_CONF_STATS */
/* Directed Acyclic Graph */ /* Directed Acyclic Graph */
struct rpl_dag { struct rpl_dag {
/* DAG configuration */ /* DAG configuration */
@ -329,7 +156,8 @@ struct rpl_dag {
/* live data for the DAG */ /* live data for the DAG */
uint8_t joined; uint8_t joined;
uint8_t dio_intcurrent; uint8_t dio_intcurrent;
uint8_t dio_send; /* for keeping track of which mode the timer is in */ uint8_t dio_send; /* for keeping track of which mode the timer is in
*/
uint8_t dio_counter; uint8_t dio_counter;
#if RPL_CONF_STATS #if RPL_CONF_STATS
uint16_t dio_totint; uint16_t dio_totint;
@ -344,59 +172,14 @@ struct rpl_dag {
list_t parents; list_t parents;
rpl_prefix_t prefix_info; rpl_prefix_t prefix_info;
}; };
typedef struct rpl_dag rpl_dag_t; typedef struct rpl_dag rpl_dag_t;
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
/* RPL macros. */ /* Public RPL functions. */
#define RPL_PARENT_COUNT(dag) list_length((dag)->parents) void rpl_init(void);
/*---------------------------------------------------------------------------*/
/* ICMPv6 functions for RPL. */
void dis_output(uip_ipaddr_t *addr);
void dio_output(rpl_dag_t *, uip_ipaddr_t *uc_addr);
void dao_output(rpl_parent_t *, uint32_t lifetime);
void dao_ack_output(rpl_dag_t *, uip_ipaddr_t *, uint8_t);
void uip_rpl_input(void);
/* RPL logic functions. */
rpl_dag_t *rpl_set_root(uip_ipaddr_t *); rpl_dag_t *rpl_set_root(uip_ipaddr_t *);
void rpl_join_dag(rpl_dag_t *);
int rpl_set_prefix(rpl_dag_t *dag, uip_ipaddr_t *prefix, int len); int rpl_set_prefix(rpl_dag_t *dag, uip_ipaddr_t *prefix, int len);
int rpl_repair_dag(rpl_dag_t *dag); int rpl_repair_dag(rpl_dag_t *dag);
void rpl_local_repair(rpl_dag_t *dag);
int rpl_set_default_route(rpl_dag_t *dag, uip_ipaddr_t *from); int rpl_set_default_route(rpl_dag_t *dag, uip_ipaddr_t *from);
void rpl_process_dio(uip_ipaddr_t *, rpl_dio_t *);
int rpl_process_parent_event(rpl_dag_t *, rpl_parent_t *);
/* DAG object management. */
rpl_dag_t *rpl_alloc_dag(uint8_t);
void rpl_free_dag(rpl_dag_t *);
rpl_dag_t *rpl_get_dag(int instance_id); rpl_dag_t *rpl_get_dag(int instance_id);
/* DAG parent management function. */
rpl_parent_t *rpl_add_parent(rpl_dag_t *, rpl_dio_t *dio, uip_ipaddr_t *);
rpl_parent_t *rpl_find_parent(rpl_dag_t *, uip_ipaddr_t *);
int rpl_remove_parent(rpl_dag_t *, rpl_parent_t *);
rpl_parent_t *rpl_select_parent(rpl_dag_t *dag);
void rpl_recalculate_ranks(void);
/* RPL routing table functions. */
void rpl_remove_routes(rpl_dag_t *dag);
uip_ds6_route_t *rpl_add_route(rpl_dag_t *dag, uip_ipaddr_t *prefix,
int prefix_len, uip_ipaddr_t *next_hop);
void rpl_purge_routes(void);
/* Objective function. */
rpl_of_t *rpl_find_of(rpl_ocp_t);
/* Timer functions. */
void rpl_schedule_dao(rpl_dag_t *);
void rpl_reset_dio_timer(rpl_dag_t *, uint8_t);
void rpl_reset_periodic_timer(void);
/* Route poisoning. */
void rpl_poison_routes(rpl_dag_t *, rpl_parent_t *);
/*---------------------------------------------------------------------------*/ /*---------------------------------------------------------------------------*/
void rpl_init(void);
#endif /* RPL_H */ #endif /* RPL_H */