BRIDGE_RTHASH_SIZE
#ifndef BRIDGE_RTHASH_SIZE
#define BRIDGE_RTHASH_MASK (BRIDGE_RTHASH_SIZE - 1)
sc->sc_rthash = malloc(sizeof(*sc->sc_rthash) * BRIDGE_RTHASH_SIZE,
for (i = 0; i < BRIDGE_RTHASH_SIZE; i++)