GL_CQ_SIZE
int boff = cq->ntotal % GL_CQ_SIZE;
boff = cq->ntotal % GL_CQ_SIZE;
nleft = GL_CQ_SIZE - boff;
int nmodulo = cq->ntotal % GL_CQ_SIZE;
int nhead = (!is_tail || nmodulo == 0) ? GL_CQ_SIZE : nmodulo;
int nbuff = nhead - (cq->nflush % GL_CQ_SIZE);
cq->nflush % GL_CQ_SIZE, nbuff);
char bytes[GL_CQ_SIZE]; /* The fixed size buffer of this node */