HVSI_MAX_READ
chunklen = hvsi_read(hp, hp->inbuf_end, HVSI_MAX_READ);
uint8_t buf[HVSI_MAX_READ] __ALIGNED__;
if (0 == hvsi_read(hp, buf, HVSI_MAX_READ))
uint8_t inbuf[HVSI_MAX_PACKET + HVSI_MAX_READ];