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Improved objective function API so DAG metric containers can be generated cleanly. The packet generation now asks the OF to provide a fresh logical presentation of the metric container, which is then translated to raw packet format.

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This commit is contained in:
nvt 2011-02-15 01:13:30 +01:00
parent 20bf23cf06
commit a093c262ee
6 changed files with 164 additions and 73 deletions
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51
core/net/rpl/rpl-icmp6.c
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@ -236,6 +236,8 @@ dio_input(void)
return;
}
PRINTF("RPL: DIO suboption %u, length: %u\n", subopt_type, len - 2);
switch(subopt_type) {
case RPL_DIO_SUBOPT_DAG_METRIC_CONTAINER:
if(len < 6) {
@ -243,13 +245,25 @@ dio_input(void)
RPL_STAT(rpl_stats.malformed_msgs++);
return;
}
dio.metric_container.type = buffer[i + 2];
dio.metric_container.flags = buffer[i + 3];
dio.metric_container.aggr = buffer[i + 4] >> 4;
dio.metric_container.prec = buffer[i + 4] & 0xf;
dio.metric_container.length = buffer[i + 5];
if(dio.metric_container.type == RPL_DAG_MC_ETX) {
dio.metric_container.etx.etx = buffer[i + 6];
dio.mc.type = buffer[i + 2];
dio.mc.flags = buffer[i + 3];
dio.mc.aggr = buffer[i + 4] >> 4;
dio.mc.prec = buffer[i + 4] & 0xf;
dio.mc.length = buffer[i + 5];
if(dio.mc.type == RPL_DAG_MC_ETX) {
dio.mc.etx.etx = buffer[i + 6] << 8;
dio.mc.etx.etx |= buffer[i + 7];
PRINTF("RPL: DAG MC: type %u, flags %u, aggr %u, prec %u, length %u, ETX %u\n",
(unsigned)dio.mc.type,
(unsigned)dio.mc.flags,
(unsigned)dio.mc.aggr,
(unsigned)dio.mc.prec,
(unsigned)dio.mc.length,
(unsigned)dio.mc.etx.etx);
} else {
PRINTF("RPL: Unhandled DAG MC type: %u\n", (unsigned)dio.mc.type);
return;
}
break;
case RPL_DIO_SUBOPT_ROUTE_INFO:
@ -313,6 +327,9 @@ dio_input(void)
PRINTF("RPL: Copying prefix information\n");
memcpy(&dio.prefix_info.prefix, &buffer[i + 16], 16);
break;
default:
PRINTF("RPL: Unsupported suboption type in DIO: %u\n",
(unsigned)subopt_type);
}
}
@ -352,6 +369,26 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
memcpy(buffer + pos, &dag->dag_id, sizeof(dag->dag_id));
pos += 16;
if(dag->mc.type != RPL_DAG_MC_NONE) {
dag->of->update_metric_container(dag);
buffer[pos++] = RPL_DIO_SUBOPT_DAG_METRIC_CONTAINER;
buffer[pos++] = 6;
buffer[pos++] = dag->mc.type;
buffer[pos++] = dag->mc.flags;
buffer[pos] = dag->mc.aggr << 4;
buffer[pos++] |= dag->mc.prec;
if(dag->mc.type == RPL_DAG_MC_ETX) {
buffer[pos++] = 2;
buffer[pos++] = dag->mc.etx.etx >> 8;
buffer[pos++] = dag->mc.etx.etx & 0xff;
} else {
PRINTF("RPL: Unable to send DIO because of unhandled DAG MC type %u\n",
(unsigned)dag->mc.type);
return;
}
}
/* always add a sub-option for DAG configuration */
buffer[pos++] = RPL_DIO_SUBOPT_DAG_CONF;
buffer[pos++] = 14;