nhdp_metric.h

Macros for NHDP metric computation.

The used infrastructure for exchanging metric values is based on the rules defined in the RFC of OLSRv2. The calculations for the Directional Airtime Metric (DAT) are based on DAT Draft v5.

NHDP_LMT_HOP_COUNT

Hop Count metric extension value for metric TLV extension field.

(163)

NHDP_LMT_DAT

DAT metric extension value for metric TLV extension field.

(165)

NHDP_METRIC

Used metric (change to switch to another metric type)

(NHDP_LMT_HOP_COUNT)

NHDP_METRIC_TIMER

Randomly chosen number for NHDP’s metric timer event.

(5445)

NHDP_METRIC_NEEDS_TIMER

Macro controlling the start of a periodic timer event for matric computation.

(NHDP_METRIC == NHDP_LMT_DAT)

NHDP_METRIC_UNKNOWN

(0)

NHDP_METRIC_MINIMUM

(RFC5444_METRIC_MIN)

NHDP_METRIC_MAXIMUM

(RFC5444_METRIC_MAX)

NHDP_Q_MEM_LENGTH

Default queue size for metrics using a queue to determine link loss.

(64)

NHDP_SEQNO_RESTART_DETECT

Restart detection value for packet sequence number based link loss computation.

(256)

NHDP_KD_LM_INC

Encoding for an incoming link metric value in metric TLV.

(0x8000)

NHDP_KD_LM_OUT

Encoding for an outgoing link metric value in metric TLV.

(0x4000)

NHDP_KD_NM_INC

Encoding for an incoming neighbor metric value in metric TLV.

(0x2000)

NHDP_KD_NM_OUT

Encoding for an outgoing neighbor metric value in metric TLV.

(0x1000)

DAT_MEMORY_LENGTH

Length of RCVD and TOTAL queue of DAT metric.

(NHDP_Q_MEM_LENGTH)

DAT_REFRESH_INTERVAL

Time between DAT metric refreshal.

(1)

DAT_HELLO_TIMEOUT_FACTOR

Factor to spread HELLO interval.

(1.2)

DAT_MINIMUM_BITRATE

Minimal supported bit rate in bps (default value for new links)

(1000)

DAT_MAXIMUM_LOSS

Maximum allowed loss in expected/rcvd HELLOs (should not be changed)

(8)

DAT_CONSTANT

Constant value needed for DAT metric computation (should not be changed)

(16777216)