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Initialize the DIO object in case options are missing. Updated the terminology regarding options.

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This commit is contained in:
nvt 2011-09-05 20:28:50 +02:00
parent f7a3a8476f
commit 644f1c627d
2 changed files with 31 additions and 28 deletions
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36
core/net/rpl/rpl-icmp6.c
View File

@ -169,6 +169,8 @@ dio_input(void)
uip_ipaddr_t from;
uip_ds6_nbr_t *nbr;
memset(&dio, 0, sizeof(dio));
dio.dag_intdoubl = DEFAULT_DIO_INTERVAL_DOUBLINGS;
dio.dag_intmin = DEFAULT_DIO_INTERVAL_MIN;
dio.dag_redund = DEFAULT_DIO_REDUNDANCY;
@ -227,7 +229,7 @@ dio_input(void)
/* Check if there are any DIO suboptions. */
for(; i < buffer_length; i += len) {
subopt_type = buffer[i];
if(subopt_type == RPL_DIO_SUBOPT_PAD1) {
if(subopt_type == RPL_OPTION_PAD1) {
len = 1;
} else {
/* Suboption with a two-byte header + payload */
@ -240,10 +242,10 @@ dio_input(void)
return;
}
PRINTF("RPL: DIO suboption %u, length: %u\n", subopt_type, len - 2);
PRINTF("RPL: DIO option %u, length: %u\n", subopt_type, len - 2);
switch(subopt_type) {
case RPL_DIO_SUBOPT_DAG_METRIC_CONTAINER:
case RPL_OPTION_DAG_METRIC_CONTAINER:
if(len < 6) {
PRINTF("RPL: Invalid DAG MC, len = %d\n", len);
RPL_STAT(rpl_stats.malformed_msgs++);
@ -276,7 +278,7 @@ dio_input(void)
return;
}
break;
case RPL_DIO_SUBOPT_ROUTE_INFO:
case RPL_OPTION_ROUTE_INFO:
if(len < 9) {
PRINTF("RPL: Invalid destination prefix option, len = %d\n", len);
RPL_STAT(rpl_stats.malformed_msgs++);
@ -288,7 +290,7 @@ dio_input(void)
dio.destination_prefix.flags = buffer[i + 3];
dio.destination_prefix.lifetime = get32(buffer, i + 4);
if(((dio.destination_prefix.length + 7)/ 8) + 8 <= len &&
if(((dio.destination_prefix.length + 7) / 8) + 8 <= len &&
dio.destination_prefix.length <= 128) {
PRINTF("RPL: Copying destination prefix\n");
memcpy(&dio.destination_prefix.prefix, &buffer[i + 8],
@ -300,7 +302,7 @@ dio_input(void)
}
break;
case RPL_DIO_SUBOPT_DAG_CONF:
case RPL_OPTION_DAG_CONF:
if(len != 16) {
PRINTF("RPL: Invalid DAG configuration option, len = %d\n", len);
RPL_STAT(rpl_stats.malformed_msgs++);
@ -322,7 +324,7 @@ dio_input(void)
dio.dag_max_rankinc, dio.dag_min_hoprankinc, dio.ocp,
dio.default_lifetime, dio.lifetime_unit);
break;
case RPL_DIO_SUBOPT_PREFIX_INFO:
case RPL_OPTION_PREFIX_INFO:
if(len != 32) {
PRINTF("RPL: DAG Prefix info not ok, len != 32\n");
RPL_STAT(rpl_stats.malformed_msgs++);
@ -382,7 +384,7 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
if(dag->mc.type != RPL_DAG_MC_NONE) {
dag->of->update_metric_container(dag);
buffer[pos++] = RPL_DIO_SUBOPT_DAG_METRIC_CONTAINER;
buffer[pos++] = RPL_OPTION_DAG_METRIC_CONTAINER;
buffer[pos++] = 6;
buffer[pos++] = dag->mc.type;
buffer[pos++] = dag->mc.flags >> 1;
@ -405,7 +407,7 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
}
/* Always add a sub-option for DAG configuration. */
buffer[pos++] = RPL_DIO_SUBOPT_DAG_CONF;
buffer[pos++] = RPL_OPTION_DAG_CONF;
buffer[pos++] = 14;
buffer[pos++] = 0; /* No Auth, PCS = 0 */
buffer[pos++] = dag->dio_intdoubl;
@ -425,7 +427,7 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
/* Check if we have a prefix to send also. */
if(dag->prefix_info.length > 0) {
buffer[pos++] = RPL_DIO_SUBOPT_PREFIX_INFO;
buffer[pos++] = RPL_OPTION_PREFIX_INFO;
buffer[pos++] = 30; /* always 30 bytes + 2 long */
buffer[pos++] = dag->prefix_info.length;
buffer[pos++] = dag->prefix_info.flags;
@ -522,25 +524,25 @@ dao_input(void)
pos += 16;
}
/* Check if there are any DIO sub-options. */
/* Check if there are any RPL options present. */
i = pos;
for(; i < buffer_length; i += len) {
subopt_type = buffer[i];
if(subopt_type == RPL_DIO_SUBOPT_PAD1) {
if(subopt_type == RPL_OPTION_PAD1) {
len = 1;
} else {
/* Sub-option with a two-byte header and payload */
/* The option consists of a two-byte header and a payload. */
len = 2 + buffer[i + 1];
}
switch(subopt_type) {
case RPL_DIO_SUBOPT_TARGET:
case RPL_OPTION_TARGET:
/* handle the target option */
prefixlen = buffer[i + 3];
memset(&prefix, 0, sizeof(prefix));
memcpy(&prefix, buffer + i + 4, (prefixlen + 7) / CHAR_BIT);
break;
case RPL_DIO_SUBOPT_TRANSIT:
case RPL_OPTION_TRANSIT:
/* The path sequence and control are ignored. */
pathcontrol = buffer[i + 3];
pathsequence = buffer[i + 4];
@ -651,7 +653,7 @@ dao_output(rpl_parent_t *n, rpl_lifetime_t lifetime)
/* create target subopt */
prefixlen = sizeof(prefix) * CHAR_BIT;
buffer[pos++] = RPL_DIO_SUBOPT_TARGET;
buffer[pos++] = RPL_OPTION_TARGET;
buffer[pos++] = 2 + ((prefixlen + 7) / CHAR_BIT);
buffer[pos++] = 0; /* reserved */
buffer[pos++] = prefixlen;
@ -659,7 +661,7 @@ dao_output(rpl_parent_t *n, rpl_lifetime_t lifetime)
pos += ((prefixlen + 7) / CHAR_BIT);
/* Create a transit information sub-option. */
buffer[pos++] = RPL_DIO_SUBOPT_TRANSIT;
buffer[pos++] = RPL_OPTION_TRANSIT;
buffer[pos++] = 4;
buffer[pos++] = 0; /* flags - ignored */
buffer[pos++] = 0; /* path control - ignored */

23
core/net/rpl/rpl-private.h
View File

@ -79,19 +79,20 @@
#define RPL_CODE_SEC_DAO 0x82 /* Secure DAO */
#define RPL_CODE_SEC_DAO_ACK 0x83 /* Secure DAO ACK */
/* RPL DIO/DAO suboption types */
#define RPL_DIO_SUBOPT_PAD1 0
#define RPL_DIO_SUBOPT_PADN 1
#define RPL_DIO_SUBOPT_DAG_METRIC_CONTAINER 2
#define RPL_DIO_SUBOPT_ROUTE_INFO 3
#define RPL_DIO_SUBOPT_DAG_CONF 4
#define RPL_DIO_SUBOPT_TARGET 5
#define RPL_DIO_SUBOPT_TRANSIT 6
#define RPL_DIO_SUBOPT_SOLICITED_INFO 7
#define RPL_DIO_SUBOPT_PREFIX_INFO 8
/* RPL control message options. */
#define RPL_OPTION_PAD1 0
#define RPL_OPTION_PADN 1
#define RPL_OPTION_DAG_METRIC_CONTAINER 2
#define RPL_OPTION_ROUTE_INFO 3
#define RPL_OPTION_DAG_CONF 4
#define RPL_OPTION_TARGET 5
#define RPL_OPTION_TRANSIT 6
#define RPL_OPTION_SOLICITED_INFO 7
#define RPL_OPTION_PREFIX_INFO 8
#define RPL_OPTION_TARGET_DESC 9
#define RPL_DAO_K_FLAG 0x80 /* DAO ACK requested */
#define RPL_DAO_D_FLAG 0x40 /* DODAG ID Present */
#define RPL_DAO_D_FLAG 0x40 /* DODAG ID present */
/*---------------------------------------------------------------------------*/
/* Default values for RPL constants and variables. */