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Move 16-bit integer conversion operations into functions, as is done already with 32-bit ops.

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This commit is contained in:
nvt 2011-09-06 17:28:39 +02:00
parent 8a9ee96c2d
commit ab0c04b041
1 changed files with 34 additions and 24 deletions
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58
core/net/rpl/rpl-icmp6.c
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@ -97,7 +97,7 @@ static uint32_t
get32(uint8_t *buffer, int pos)
{
return (uint32_t)buffer[pos] << 24 | (uint32_t)buffer[pos + 1] << 16 |
(uint32_t)buffer[pos + 2] << 8 | buffer[pos + 3];
(uint32_t)buffer[pos + 2] << 8 | buffer[pos + 3];
}
/*---------------------------------------------------------------------------*/
static void
@ -109,6 +109,19 @@ set32(uint8_t *buffer, int pos, uint32_t value)
buffer[pos++] = value & 0xff;
}
/*---------------------------------------------------------------------------*/
static uint16_t
get16(uint8_t *buffer, int pos)
{
return (uint16_t)buffer[pos] << 8 | buffer[pos + 1];
}
/*---------------------------------------------------------------------------*/
static void
set16(uint8_t *buffer, int pos, uint16_t value)
{
buffer[pos++] = value >> 8;
buffer[pos++] = value & 0xff;
}
/*---------------------------------------------------------------------------*/
static void
dis_input(void)
{
@ -210,7 +223,7 @@ dio_input(void)
dio.instance_id = buffer[i++];
dio.version = buffer[i++];
dio.rank = (buffer[i] << 8) | buffer[i + 1];
dio.rank = get16(buffer, i);
i += 2;
PRINTF("RPL: Incoming DIO rank %u\n", (unsigned)dio.rank);
@ -260,8 +273,7 @@ dio_input(void)
dio.mc.length = buffer[i + 5];
if(dio.mc.type == RPL_DAG_MC_ETX) {
dio.mc.obj.etx = buffer[i + 6] << 8;
dio.mc.obj.etx |= buffer[i + 7];
dio.mc.obj.etx = get16(buffer, i + 6);
PRINTF("RPL: DAG MC: type %u, flags %u, aggr %u, prec %u, length %u, ETX %u\n",
(unsigned)dio.mc.type,
@ -313,12 +325,12 @@ dio_input(void)
dio.dag_intdoubl = buffer[i + 3];
dio.dag_intmin = buffer[i + 4];
dio.dag_redund = buffer[i + 5];
dio.dag_max_rankinc = (buffer[i + 6] << 8) | buffer[i + 7];
dio.dag_min_hoprankinc = (buffer[i + 8] << 8) | buffer[i + 9];
dio.ocp = (buffer[i + 10] << 8) | buffer[i + 11];
dio.dag_max_rankinc = get16(buffer, i + 6);
dio.dag_min_hoprankinc = get16(buffer, i + 8);
dio.ocp = get16(buffer, i + 10);
/* buffer + 12 is reserved */
dio.default_lifetime = buffer[i + 13];
dio.lifetime_unit = (buffer[i + 14] << 8) | buffer[i + 15];
dio.lifetime_unit = get16(buffer, i + 14);
PRINTF("RPL: DIO Conf:dbl=%d, min=%d red=%d maxinc=%d mininc=%d ocp=%d d_l=%u l_u=%u\n",
dio.dag_intdoubl, dio.dag_intmin, dio.dag_redund,
dio.dag_max_rankinc, dio.dag_min_hoprankinc, dio.ocp,
@ -361,17 +373,15 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
buffer = UIP_ICMP_PAYLOAD;
buffer[pos++] = dag->instance_id;
buffer[pos++] = dag->version;
buffer[pos++] = dag->rank >> 8;
buffer[pos++] = dag->rank & 0xff;
set16(buffer, pos, dag->rank);
pos += 2;
buffer[pos] = 0;
if(dag->grounded) {
buffer[pos] |= RPL_DIO_GROUNDED;
}
buffer[pos] = dag->mop << RPL_DIO_MOP_SHIFT;
pos++;
buffer[pos++] = dag->mop << RPL_DIO_MOP_SHIFT;
buffer[pos++] = ++dag->dtsn_out;
/* reserved 2 bytes */
@ -393,8 +403,8 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
if(dag->mc.type == RPL_DAG_MC_ETX) {
buffer[pos++] = 2;
buffer[pos++] = dag->mc.obj.etx >> 8;
buffer[pos++] = dag->mc.obj.etx & 0xff;
set16(buffer, pos, dag->mc.obj.etx);
pos += 2;
} else if(dag->mc.type == RPL_DAG_MC_ENERGY) {
buffer[pos++] = 2;
buffer[pos++] = dag->mc.obj.energy.flags;
@ -406,24 +416,24 @@ dio_output(rpl_dag_t *dag, uip_ipaddr_t *uc_addr)
}
}
/* Always add a sub-option for DAG configuration. */
/* Always add a DAG configuration option. */
buffer[pos++] = RPL_OPTION_DAG_CONF;
buffer[pos++] = 14;
buffer[pos++] = 0; /* No Auth, PCS = 0 */
buffer[pos++] = dag->dio_intdoubl;
buffer[pos++] = dag->dio_intmin;
buffer[pos++] = dag->dio_redundancy;
buffer[pos++] = dag->max_rankinc >> 8;
buffer[pos++] = dag->max_rankinc & 0xff;
buffer[pos++] = dag->min_hoprankinc >> 8;
buffer[pos++] = dag->min_hoprankinc & 0xff;
set16(buffer, pos, dag->max_rankinc);
pos += 2;
set16(buffer, pos, dag->min_hoprankinc);
pos += 2;
/* OCP is in the DAG_CONF option */
buffer[pos++] = dag->of->ocp >> 8;
buffer[pos++] = dag->of->ocp & 0xff;
set16(buffer, pos, dag->of->ocp);
pos += 2;
buffer[pos++] = 0; /* reserved */
buffer[pos++] = dag->default_lifetime;
buffer[pos++] = dag->lifetime_unit >> 8;
buffer[pos++] = dag->lifetime_unit & 0xff;
set16(buffer, pos, dag->lifetime_unit);
pos += 2;
/* Check if we have a prefix to send also. */
if(dag->prefix_info.length > 0) {