mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 01:29:33 +00:00
added experimental support for disseminating autoconf prefix via DIO suboption
This commit is contained in:
parent
8e619e991d
commit
34b8313fb6
@ -32,7 +32,7 @@
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* $Id: rpl-dag.c,v 1.7 2010/05/24 16:38:56 nvt-se Exp $
|
||||
* $Id: rpl-dag.c,v 1.8 2010/05/25 19:19:43 joxe Exp $
|
||||
*/
|
||||
/**
|
||||
* \file
|
||||
@ -44,6 +44,7 @@
|
||||
#include "net/rpl/rpl.h"
|
||||
|
||||
#include "net/uip.h"
|
||||
#include "net/uip-nd6.h"
|
||||
#include "net/rime/ctimer.h"
|
||||
#include "lib/list.h"
|
||||
#include "lib/memb.h"
|
||||
@ -162,6 +163,22 @@ rpl_set_root(uip_ipaddr_t *dag_id)
|
||||
}
|
||||
/************************************************************************/
|
||||
int
|
||||
rpl_set_prefix(rpl_dag_t *dag, uip_ipaddr_t *prefix, int len) {
|
||||
if(len <= 128) {
|
||||
memset(&dag->destination_prefix.prefix, 0, 16);
|
||||
memcpy(&dag->destination_prefix.prefix, prefix, (len + 7)/ 8);
|
||||
dag->destination_prefix.length = len;
|
||||
/* Note: this is an experiment to see if RPL can be used for
|
||||
prefix-assignment for RPL nodes - this flag is originally
|
||||
intended for Router Advertisements */
|
||||
dag->destination_prefix.preference = UIP_ND6_RA_FLAG_AUTONOMOUS;
|
||||
PRINTF("RPL: Prefix set - will announce this in DIOs\n");
|
||||
return 0;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
/************************************************************************/
|
||||
int
|
||||
rpl_set_default_route(rpl_dag_t *dag, uip_ipaddr_t *from)
|
||||
{
|
||||
if(dag->def_route != NULL) {
|
||||
@ -423,6 +440,10 @@ join_dag(uip_ipaddr_t *from, rpl_dio_t *dio)
|
||||
|
||||
memcpy(&dag->dag_id, &dio->dag_id, sizeof(dio->dag_id));
|
||||
|
||||
/* copy prefix information into the dag */
|
||||
memcpy(&dag->destination_prefix, &dio->destination_prefix,
|
||||
sizeof(rpl_prefix_t));
|
||||
|
||||
rpl_join_dag(dag);
|
||||
|
||||
PRINTF("RPL: Joined DAG with instance ID %u, rank %hu, DAG ID ",
|
||||
|
@ -33,7 +33,7 @@
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* $Id: rpl-icmp6.c,v 1.9 2010/05/24 16:38:56 nvt-se Exp $
|
||||
* $Id: rpl-icmp6.c,v 1.10 2010/05/25 19:19:43 joxe Exp $
|
||||
*/
|
||||
/**
|
||||
* \file
|
||||
@ -164,7 +164,6 @@ dio_input(void)
|
||||
uint8_t subopt_type;
|
||||
int i;
|
||||
int len;
|
||||
rpl_prefix_t prefix;
|
||||
uip_ipaddr_t from;
|
||||
uip_ds6_nbr_t *nbr;
|
||||
|
||||
@ -237,7 +236,37 @@ dio_input(void)
|
||||
PRINTF("RPL: Invalid destination prefix option, len = %d\n", len);
|
||||
return;
|
||||
}
|
||||
prefix.preference = (buffer[3] >> 3) & 0x3;
|
||||
/* prebference is both preference and flags for now */
|
||||
dio.destination_prefix.preference = buffer[i + 3];
|
||||
dio.destination_prefix.lifetime = get32(buffer, i + 4);
|
||||
dio.destination_prefix.length = buffer[i + 8];
|
||||
if(((dio.destination_prefix.length + 7)/ 8) + 9 <= len &&
|
||||
dio.destination_prefix.length <= 128) {
|
||||
PRINTF("RPL: Copying destination prefix\n");
|
||||
memcpy(&dio.destination_prefix.prefix, &buffer[i + 9],
|
||||
(dio.destination_prefix.length + 7) / 8);
|
||||
|
||||
/* NOTE: This is a test for adding autoconf prefix in RPL via */
|
||||
/* a destination prefix - this use one reserved flag bit */
|
||||
/* This should not be made until RPL decides to join the DAG */
|
||||
/* And not if there already is a global address configured for */
|
||||
/* the specific DAG */
|
||||
if((dio.destination_prefix.preference & UIP_ND6_RA_FLAG_AUTONOMOUS)) {
|
||||
uip_ipaddr_t ipaddr;
|
||||
memcpy(&ipaddr, &dio.destination_prefix.prefix,
|
||||
(dio.destination_prefix.length + 7) / 8);
|
||||
uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
|
||||
if(uip_ds6_addr_lookup(&ipaddr) == NULL) {
|
||||
PRINTF("RPL: adding global IP address ");
|
||||
PRINT6ADDR(&ipaddr);
|
||||
PRINTF("\n");
|
||||
uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
PRINTF("RPL: Invalid destination prefix option, len = %d\n", len);
|
||||
}
|
||||
|
||||
break;
|
||||
case RPL_DIO_SUBOPT_DAG_CONF:
|
||||
dio.dag_intdoubl = buffer[i + 3];
|
||||
@ -309,6 +338,26 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
|
||||
buffer[pos++] = dag->max_rankinc;
|
||||
buffer[pos++] = dag->min_hoprankinc;
|
||||
|
||||
/* if prefix length > 0 then we have a prefix to send! */
|
||||
if(dag->destination_prefix.length > 0) {
|
||||
buffer[pos++] = RPL_DIO_SUBOPT_DEST_PREFIX;
|
||||
buffer[pos++] = 0;
|
||||
buffer[pos++] = (dag->destination_prefix.length + 7)/ 8 + 9;
|
||||
buffer[pos++] = dag->destination_prefix.preference;
|
||||
set32(buffer, pos, dag->destination_prefix.lifetime);
|
||||
pos += 4;
|
||||
buffer[pos++] = dag->destination_prefix.length;
|
||||
memcpy(&buffer[pos], &(dag->destination_prefix.prefix),
|
||||
(dag->destination_prefix.length + 7)/ 8);
|
||||
pos += (dag->destination_prefix.length + 7)/ 8;
|
||||
PRINTF("RPL: Sending prefix info in DIO ");
|
||||
PRINT6ADDR(&dag->destination_prefix.prefix);
|
||||
PRINTF("\n");
|
||||
} else {
|
||||
PRINTF("RPL: No prefix to announce. len:%d\n",
|
||||
dag->destination_prefix.length);
|
||||
}
|
||||
|
||||
/* buffer[len++] = RPL_DIO_SUBOPT_PAD1; */
|
||||
|
||||
/* Unicast requests get unicast replies! */
|
||||
|
@ -30,7 +30,7 @@
|
||||
*
|
||||
* Author: Joakim Eriksson, Nicolas Tsiftes
|
||||
*
|
||||
* $Id: rpl.h,v 1.2 2010/04/30 15:03:55 nvt-se Exp $
|
||||
* $Id: rpl.h,v 1.3 2010/05/25 19:19:43 joxe Exp $
|
||||
*/
|
||||
|
||||
#ifndef RPL_H
|
||||
@ -146,6 +146,16 @@ struct rpl_of {
|
||||
|
||||
typedef struct rpl_of rpl_of_t;
|
||||
|
||||
/* RPL DIO prefix suboption */
|
||||
struct rpl_prefix {
|
||||
uip_ipaddr_t prefix;
|
||||
uint32_t lifetime;
|
||||
uint8_t length;
|
||||
uint8_t preference;
|
||||
};
|
||||
|
||||
typedef struct rpl_prefix rpl_prefix_t;
|
||||
|
||||
/* Logical representation of a DAG Information Object (DIO.) */
|
||||
struct rpl_dio {
|
||||
uip_ipaddr_t dag_id;
|
||||
@ -163,19 +173,11 @@ struct rpl_dio {
|
||||
uint8_t dag_redund;
|
||||
uint8_t dag_max_rankinc;
|
||||
uint8_t dag_min_hoprankinc;
|
||||
rpl_prefix_t destination_prefix;
|
||||
};
|
||||
|
||||
typedef struct rpl_dio rpl_dio_t;
|
||||
|
||||
struct rpl_prefix {
|
||||
uip_ipaddr_t prefix;
|
||||
uint32_t lifetime;
|
||||
uint8_t length;
|
||||
uint8_t preference;
|
||||
};
|
||||
|
||||
typedef struct rpl_prefix rpl_prefix_t;
|
||||
|
||||
/* Directed Acyclic Graph */
|
||||
struct rpl_dag {
|
||||
/* DAG configuration */
|
||||
@ -213,6 +215,7 @@ struct rpl_dag {
|
||||
rpl_neighbor_t *best_parent;
|
||||
void *neighbor_list;
|
||||
list_t neighbors;
|
||||
rpl_prefix_t destination_prefix;
|
||||
};
|
||||
|
||||
typedef struct rpl_dag rpl_dag_t;
|
||||
@ -236,6 +239,7 @@ void uip_rpl_input(void);
|
||||
|
||||
/* RPL logic functions. */
|
||||
int rpl_set_root(uip_ipaddr_t *);
|
||||
int rpl_set_prefix(rpl_dag_t *dag, uip_ipaddr_t *prefix, int len);
|
||||
int rpl_repair_dag(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 *);
|
||||
|
Loading…
Reference in New Issue
Block a user