changed RPL to be more 08 compliant - DIO and DIO options are formatted as in RPL-08
This commit is contained in:
joxe
parent
351325b7f4
commit
fec0e8df69
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@ -32,7 +32,7 @@
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: rpl-dag.c,v 1.11 2010/05/31 14:22:00 nvt-se Exp $
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* $Id: rpl-dag.c,v 1.12 2010/06/01 22:30:02 joxe Exp $
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*/
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/**
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* \file
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@ -149,6 +149,8 @@ rpl_set_root(uip_ipaddr_t *dag_id)
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dag->dio_intdoubl = DEFAULT_DIO_INTERVAL_DOUBLINGS;
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dag->dio_intmin = DEFAULT_DIO_INTERVAL_MIN;
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dag->dio_redundancy = DEFAULT_DIO_REDUNDANCY;
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dag->max_rankinc = DEFAULT_MAX_RANKINC;
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dag->min_hoprankinc = DEFAULT_MIN_HOPRANKINC;
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PRINTF("RPL: Node set to be a DAG root with DAG ID ");
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PRINT6ADDR(&dag->dag_id);
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@ -162,13 +164,10 @@ rpl_set_root(uip_ipaddr_t *dag_id)
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int
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rpl_set_prefix(rpl_dag_t *dag, uip_ipaddr_t *prefix, int len) {
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if(len <= 128) {
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memset(&dag->destination_prefix.prefix, 0, 16);
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memcpy(&dag->destination_prefix.prefix, prefix, (len + 7)/ 8);
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dag->destination_prefix.length = len;
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/* Note: this is an experiment to see if RPL can be used for
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prefix-assignment for RPL nodes - this flag is originally
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intended for Router Advertisements */
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dag->destination_prefix.preference = UIP_ND6_RA_FLAG_AUTONOMOUS;
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memset(&dag->prefix_info.prefix, 0, 16);
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memcpy(&dag->prefix_info.prefix, prefix, (len + 7)/ 8);
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dag->prefix_info.length = len;
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dag->prefix_info.flags = UIP_ND6_RA_FLAG_AUTONOMOUS;
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PRINTF("RPL: Prefix set - will announce this in DIOs\n");
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return 0;
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}
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@ -428,8 +427,7 @@ join_dag(uip_ipaddr_t *from, rpl_dio_t *dio)
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memcpy(&dag->dag_id, &dio->dag_id, sizeof(dio->dag_id));
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/* copy prefix information into the dag */
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memcpy(&dag->destination_prefix, &dio->destination_prefix,
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sizeof(rpl_prefix_t));
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memcpy(&dag->prefix_info, &dio->prefix_info, sizeof(rpl_prefix_t));
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rpl_join_dag(dag);
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@ -33,7 +33,7 @@
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*
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* This file is part of the Contiki operating system.
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*
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* $Id: rpl-icmp6.c,v 1.12 2010/05/29 22:23:21 nvt-se Exp $
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* $Id: rpl-icmp6.c,v 1.13 2010/06/01 22:30:02 joxe Exp $
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*/
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/**
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* \file
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@ -62,7 +62,9 @@
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#define RPL_DIO_GROUNDED 0x80
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#define RPL_DIO_DEST_ADV_SUPPORTED 0x40
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#define RPL_DIO_DEST_ADV_TRIGGER 0x20
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#define RPL_DIO_DEST_ADV_STORED 0x10
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#define RPL_DIO_MOP_MASK 0x18
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#define RPL_DIO_MOP_NON_STORING 0x00
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#define RPL_DIO_MOP_STORING 0x10
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#define RPL_DIO_DAG_PREFERENCE_MASK 0x07
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@ -200,16 +202,20 @@ dio_input(void)
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/* Process the DIO base option. */
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i = 0;
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buffer = UIP_ICMP_PAYLOAD;
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dio.instance_id = buffer[i++];
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dio.version = buffer[i++];
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dio.dag_rank = (buffer[i] << 8) + buffer[i + 1];
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i += 2;
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dio.grounded = buffer[i] & RPL_DIO_GROUNDED;
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dio.dst_adv_trigger = buffer[i] & RPL_DIO_DEST_ADV_TRIGGER;
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dio.dst_adv_supported = buffer[i] & RPL_DIO_DEST_ADV_SUPPORTED;
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dio.preference = buffer[i++] & RPL_DIO_DAG_PREFERENCE_MASK;
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dio.sequence_number = buffer[i++];
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dio.dag_rank = (buffer[i] << 8) + buffer[i + 1];
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i += 2;
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dio.instance_id = buffer[i++];
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dio.dtsn = buffer[i++];
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/* two reserved bytes */
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i += 2;
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memcpy(&dio.dag_id, buffer + i, sizeof(dio.dag_id));
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i += sizeof(dio.dag_id);
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@ -220,8 +226,8 @@ dio_input(void)
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if(subopt_type == RPL_DIO_SUBOPT_PAD1) {
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len = 1;
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} else {
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/* Suboption with a three-byte header. */
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len = (buffer[i + 1] << 8) + buffer[i + 2] + 3;
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/* Suboption with a two-byte header + payload */
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len = 2 + buffer[i + 1];
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}
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switch(subopt_type) {
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@ -231,58 +237,74 @@ dio_input(void)
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return;
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}
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break;
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case RPL_DIO_SUBOPT_DEST_PREFIX:
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case RPL_DIO_SUBOPT_ROUTE_INFO:
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if(len < 9) {
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PRINTF("RPL: Invalid destination prefix option, len = %d\n", len);
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return;
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}
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/* prebference is both preference and flags for now */
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dio.destination_prefix.preference = buffer[i + 3];
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/* flags is both preference and flags for now */
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dio.destination_prefix.length = buffer[i + 2];
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dio.destination_prefix.flags = buffer[i + 3];
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dio.destination_prefix.lifetime = get32(buffer, i + 4);
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dio.destination_prefix.length = buffer[i + 8];
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if(((dio.destination_prefix.length + 7)/ 8) + 9 <= len &&
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if(((dio.destination_prefix.length + 7)/ 8) + 8 <= len &&
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dio.destination_prefix.length <= 128) {
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PRINTF("RPL: Copying destination prefix\n");
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memcpy(&dio.destination_prefix.prefix, &buffer[i + 9],
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memcpy(&dio.destination_prefix.prefix, &buffer[i + 8],
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(dio.destination_prefix.length + 7) / 8);
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/* NOTE: This is a test for adding autoconf prefix in RPL via */
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/* a destination prefix - this use one reserved flag bit */
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/* This should not be made until RPL decides to join the DAG */
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/* And not if there already is a global address configured for */
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/* the specific DAG */
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if((dio.destination_prefix.preference & UIP_ND6_RA_FLAG_AUTONOMOUS)) {
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uip_ipaddr_t ipaddr;
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memcpy(&ipaddr, &dio.destination_prefix.prefix,
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(dio.destination_prefix.length + 7) / 8);
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uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
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if(uip_ds6_addr_lookup(&ipaddr) == NULL) {
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PRINTF("RPL: adding global IP address ");
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PRINT6ADDR(&ipaddr);
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PRINTF("\n");
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uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
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}
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}
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} else {
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PRINTF("RPL: Invalid destination prefix option, len = %d\n", len);
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PRINTF("RPL: Invalid route infoprefix option, len = %d\n", len);
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}
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break;
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case RPL_DIO_SUBOPT_DAG_CONF:
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/* Path control field not yet implemented - at i + 2 */
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dio.dag_intdoubl = buffer[i + 3];
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dio.dag_intmin = buffer[i + 4];
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dio.dag_redund = buffer[i + 5];
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dio.dag_max_rankinc = buffer[i + 6];
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dio.dag_min_hoprankinc = buffer[i + 7];
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dio.dag_max_rankinc = (buffer[i + 6] << 8) | buffer[i + 7];
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dio.dag_min_hoprankinc = (buffer[i + 8] << 8) | buffer[i + 9];
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PRINTF("RPL: DIO trickle timer:dbl=%d, min=%d red=%d maxinc=%d mininc=%d\n",
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dio.dag_intdoubl,
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dio.dag_intdoubl,
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dio.dag_intmin, dio.dag_redund,
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dio.dag_max_rankinc, dio.dag_min_hoprankinc);
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break;
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case RPL_DIO_SUBOPT_OCP:
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dio.ocp = buffer[i + 3] << 8 | buffer[i + 4];
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dio.ocp = buffer[i + 2] << 8 | buffer[i + 3];
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PRINTF("RPL: DAG OCP Sub-opt received OCP = %u\n", dio.ocp);
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break;
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case RPL_DIO_SUBOPT_PREFIX_INFO:
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if(len != 32) {
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PRINTF("RPL: DAG Prefix info not ok, len != 32\n");
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return;
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}
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dio.prefix_info.length = buffer[i + 2];
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dio.prefix_info.flags = buffer[i + 3];
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/* valid lifetime is ingnored for now - at i + 4 */
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/* preferred lifetime stored in lifetime */
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dio.prefix_info.lifetime = get32(buffer, i + 8);
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/* 32-bit reserved at i + 12 */
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PRINTF("RPL: Copying prefix information\n");
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memcpy(&dio.prefix_info.prefix, &buffer[i + 16], 16);
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/* NOTE: This is a test for adding autoconf prefix in RPL via */
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/* a destination prefix - this use one reserved flag bit */
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/* This should not be made until RPL decides to join the DAG */
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/* And not if there already is a global address configured for */
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/* the specific DAG */
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if((dio.prefix_info.flags & UIP_ND6_RA_FLAG_AUTONOMOUS)) {
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uip_ipaddr_t ipaddr;
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/* assume that the prefix ends with zeros! */
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memcpy(&ipaddr, &dio.prefix_info.prefix, 16);
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uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
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if(uip_ds6_addr_lookup(&ipaddr) == NULL) {
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PRINTF("RPL: adding global IP address ");
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PRINT6ADDR(&ipaddr);
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PRINTF("\n");
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uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
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}
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}
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break;
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}
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}
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@ -301,27 +323,27 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
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pos = 0;
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buffer = UIP_ICMP_PAYLOAD;
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buffer[0] = dag->preference;
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if(dag->grounded) {
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buffer[0] |= RPL_DIO_GROUNDED;
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}
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/* Set dst_adv_trigger and dst_adv_supported. */
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buffer[0] |= RPL_DIO_DEST_ADV_SUPPORTED | RPL_DIO_DEST_ADV_TRIGGER;
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buffer[1] = dag->sequence_number;
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pos = 2;
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buffer[pos++] = dag->instance_id;
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buffer[pos++] = 0; /* version */
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buffer[pos++] = dag->rank >> 8;
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buffer[pos++] = dag->rank & 0xff;
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buffer[pos++] = dag->instance_id;
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if(dag->grounded) {
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buffer[pos] |= RPL_DIO_GROUNDED;
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}
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/* Set dst_adv_trigger and dst_adv_supported. */
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buffer[pos] |= RPL_DIO_DEST_ADV_SUPPORTED | RPL_DIO_DEST_ADV_TRIGGER;
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pos++;
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/* buffer[pos++] = dag->sequence_number; */
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buffer[pos++] = dag->dtsn;
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/* reserved 2 bytes */
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pos += 2;
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memcpy(buffer + pos, &dag->dag_id, sizeof(dag->dag_id));
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pos += 16;
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/* The objective function object must appear first. */
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buffer[pos++] = RPL_DIO_SUBOPT_OCP;
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buffer[pos++] = 0;
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buffer[pos++] = 2;
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buffer[pos++] = dag->of->ocp >> 8;
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buffer[pos++] = dag->of->ocp & 0xff;
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@ -330,32 +352,36 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
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/* always add a sub-option for DAG configuration */
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buffer[pos++] = RPL_DIO_SUBOPT_DAG_CONF;
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buffer[pos++] = 0;
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buffer[pos++] = 5;
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buffer[pos++] = 8;
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buffer[pos++] = 0; /* PCS */
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buffer[pos++] = dag->dio_intdoubl;
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buffer[pos++] = dag->dio_intmin;
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buffer[pos++] = dag->dio_redundancy;
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buffer[pos++] = dag->max_rankinc;
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buffer[pos++] = dag->min_hoprankinc;
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buffer[pos++] = dag->max_rankinc >> 8;
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buffer[pos++] = dag->max_rankinc & 0xff;
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buffer[pos++] = dag->min_hoprankinc >> 8;
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buffer[pos++] = dag->min_hoprankinc & 0xff;
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/* if prefix length > 0 then we have a prefix to send! */
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if(dag->destination_prefix.length > 0) {
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buffer[pos++] = RPL_DIO_SUBOPT_DEST_PREFIX;
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buffer[pos++] = 0;
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buffer[pos++] = (dag->destination_prefix.length + 7)/ 8 + 9;
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buffer[pos++] = dag->destination_prefix.preference;
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set32(buffer, pos, dag->destination_prefix.lifetime);
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/* if prefix info length > 0 then we have a prefix to send! */
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if(dag->prefix_info.length > 0) {
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buffer[pos++] = RPL_DIO_SUBOPT_PREFIX_INFO;
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buffer[pos++] = 30; /* always 30 bytes + 2 long */
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buffer[pos++] = dag->prefix_info.length;
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buffer[pos++] = dag->prefix_info.flags;
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set32(buffer, pos, dag->prefix_info.lifetime);
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pos += 4;
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buffer[pos++] = dag->destination_prefix.length;
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memcpy(&buffer[pos], &(dag->destination_prefix.prefix),
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(dag->destination_prefix.length + 7)/ 8);
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pos += (dag->destination_prefix.length + 7)/ 8;
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set32(buffer, pos, dag->prefix_info.lifetime);
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pos += 4;
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memset(&buffer[pos], 0, 4);
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pos += 4;
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memcpy(&buffer[pos], &(dag->prefix_info.prefix), 16);
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pos += 16;
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PRINTF("RPL: Sending prefix info in DIO ");
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PRINT6ADDR(&dag->destination_prefix.prefix);
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PRINT6ADDR(&dag->prefix_info.prefix);
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PRINTF("\n");
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} else {
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PRINTF("RPL: No prefix to announce. len:%d\n",
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dag->destination_prefix.length);
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dag->prefix_info.length);
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}
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/* buffer[len++] = RPL_DIO_SUBOPT_PAD1; */
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@ -363,12 +389,12 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
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/* Unicast requests get unicast replies! */
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if(uc_addr == NULL) {
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PRINTF("RPL: Sending a multicast-DIO with rank %u\n",
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(unsigned)dag->rank);
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(unsigned)dag->rank);
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uip_create_linklocal_allrouters_mcast(&addr);
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uip_icmp6_send(&addr, ICMP6_RPL, RPL_CODE_DIO, pos);
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} else {
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PRINTF("RPL: Sending unicast-DIO with rank %u to ",
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(unsigned)dag->rank);
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(unsigned)dag->rank);
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PRINT6ADDR(uc_addr);
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PRINTF("\n");
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uip_icmp6_send(uc_addr, ICMP6_RPL, RPL_CODE_DIO, pos);
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@ -425,7 +451,7 @@ dao_input(void)
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if(rank < dag->rank) {
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PRINTF("RPL: Incoming DAO rank is %u, my rank is %u\n",
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(unsigned)rank, (unsigned)dag->rank);
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(unsigned)rank, (unsigned)dag->rank);
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return;
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}
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@ -433,7 +459,7 @@ dao_input(void)
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memcpy(&prefix, buffer + pos, prefixlen / CHAR_BIT);
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PRINTF("RPL: DAO rank: %u, lifetime: %lu, prefix length: %u",
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(unsigned)rank, (unsigned long)lifetime, (unsigned)prefixlen);
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(unsigned)rank, (unsigned long)lifetime, (unsigned)prefixlen);
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PRINTF("\n");
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if(lifetime == ZERO_LIFETIME) {
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@ -30,12 +30,25 @@
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*
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* Author: Joakim Eriksson, Nicolas Tsiftes
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*
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* $Id: rpl.h,v 1.6 2010/05/31 14:22:00 nvt-se Exp $
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* $Id: rpl.h,v 1.7 2010/06/01 22:30:02 joxe Exp $
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*/
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#ifndef RPL_H
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#define RPL_H
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/*
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* ContikiRPL - an implementation of the routing protocol for low power and
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* lossy networks. See: draft-ietf-roll-rpl-08.
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*
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* Note: This version of ContikiRPL is currently moving on to RPL-08, but
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* since the type of the OCP option for DIOs is unclear we assume that it
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* will be of type 9.
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* --
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* The DIOs handle prefix information option for setting global IP addresses
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* on the nodes, but the current handling is not awaiting the join of the DAG
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* so it does not currently support multiple DAGs.
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*/
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#include "lib/list.h"
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#include "net/uip.h"
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#include "sys/clock.h"
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@ -48,17 +61,28 @@
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#endif /* RPL_CONF_STATS */
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/* The RPL Codes for the message types */
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#define RPL_CODE_DIS 1 /* DIS message */
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#define RPL_CODE_DIO 2 /* DIO message */
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#define RPL_CODE_DAO 4 /* DAO message */
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#define RPL_CODE_DIS 0 /* DIS message */
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#define RPL_CODE_DIO 1 /* DIO message */
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#define RPL_CODE_DAO 2 /* DAO message */
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#define RPL_CODE_DAO_ACK 3 /* DAO ACK message */
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#define RPL_CODE_SEC_DIS 0x80 /* DIS message */
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#define RPL_CODE_SEC_DIO 0x81 /* DIO message */
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#define RPL_CODE_SEC_DAO 0x82 /* DAO message */
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#define RPL_CODE_SEC_DAO_ACK 0x83 /* DAO ACK message */
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/* RPL DIO suboption types */
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#define RPL_DIO_SUBOPT_PAD1 0 /* Pad1 */
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#define RPL_DIO_SUBOPT_PADN 1 /* PadN */
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#define RPL_DIO_SUBOPT_DAG_MC 2 /* DAG metric container */
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#define RPL_DIO_SUBOPT_DEST_PREFIX 3 /* Destination prefix */
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#define RPL_DIO_SUBOPT_ROUTE_INFO 3 /* Route information */
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#define RPL_DIO_SUBOPT_DAG_CONF 4 /* DAG configuration */
|
||||
#define RPL_DIO_SUBOPT_OCP 5 /* OCP */
|
||||
#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_DIO_SUBOPT_OCP 9 /* 5 in the MC document... */
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/* Default values for RPL constants and variables. */
|
||||
|
|
@ -153,7 +177,7 @@ struct rpl_prefix {
|
|||
uip_ipaddr_t prefix;
|
||||
uint32_t lifetime;
|
||||
uint8_t length;
|
||||
uint8_t preference;
|
||||
uint8_t flags;
|
||||
};
|
||||
|
||||
typedef struct rpl_prefix rpl_prefix_t;
|
||||
|
|
@ -167,6 +191,7 @@ struct rpl_dio {
|
|||
uint8_t dst_adv_trigger;
|
||||
uint8_t dst_adv_supported;
|
||||
uint8_t preference;
|
||||
uint8_t version;
|
||||
uint8_t sequence_number;
|
||||
uint8_t instance_id;
|
||||
uint8_t dtsn;
|
||||
|
|
@ -176,6 +201,7 @@ struct rpl_dio {
|
|||
uint8_t dag_max_rankinc;
|
||||
uint8_t dag_min_hoprankinc;
|
||||
rpl_prefix_t destination_prefix;
|
||||
rpl_prefix_t prefix_info;
|
||||
};
|
||||
|
||||
typedef struct rpl_dio rpl_dio_t;
|
||||
|
|
@ -217,7 +243,7 @@ struct rpl_dag {
|
|||
rpl_parent_t *best_parent;
|
||||
void *parent_list;
|
||||
list_t parents;
|
||||
rpl_prefix_t destination_prefix;
|
||||
rpl_prefix_t prefix_info;
|
||||
};
|
||||
|
||||
typedef struct rpl_dag rpl_dag_t;
|
||||
|
|
|
|||
Loading…
Reference in a new issue