def __init__(self, ir_node):
"""method __init__(): Parameter 'ir_node' is a ref to an instance of an RzvcIfRouteNode."""
Thread.__init__(self)
self._ir_node = ir_node
self._file = self._ir_node._file
self._fd = self._ir_node._file.fileno()
self._poll_obj = None
self.go = 1
self._rd_buf_len = 256
self._rd_buf = array.array('B', '\0' * self._rd_buf_len)
self._rd_buf_start_idx = 0 # holds index of first byte in (potential) pkt
self._rd_buf_cur_idx = 0 # holds index of current byte in buffer (logically, if not physically, between start and end)
self._rd_buf_end_idx = 0 # holds index of last byte read
self._bytes_read = 0
self._rd_state = 0 # start the subclass reading state machine in the 1st state
self._pkt_ext_len = 0 # set to non-zero in transition from State 2 to State 3, if any for a given pkt
self._total_pkt_len = 0 # sum of _pkt_hdr_len and _pkt_ext_len for any given pkt
self._ser_num = 30000 # 0x7530: choose higher number than expected from regular Mozaic, RZ100, or Tessera; @fixme: what about multi-Mediator systems?
# Prepare to send pkts by breaking _ser_num into component bytes:
self._ser_num_bytes = long_to_bytes(self._ser_num)
self._low_rzc = sys.maxint # listen for and store lowest dst/src address
self._high_rzc = 0 # listen for and store highest dst/src address
def __init__(self, ir_node):
"""method __init__(): Parameter 'ir_node' is a ref to an instance of an RzvcIfRouteNode."""
Thread.__init__(self)
self._ir_node = ir_node
self._file = self._ir_node._file
self._fd = self._ir_node._file.fileno()
self._poll_obj = None
self.go = 1
self._rd_buf_len = 256
self._rd_buf = array.array("B", "\0" * self._rd_buf_len)
self._rd_buf_start_idx = 0 # holds index of first byte in (potential) pkt
self._rd_buf_cur_idx = (
0
) # holds index of current byte in buffer (logically, if not physically, between start and end)
self._rd_buf_end_idx = 0 # holds index of last byte read
self._bytes_read = 0
self._rd_state = 0 # start the subclass reading state machine in the 1st state
self._pkt_ext_len = 0 # set to non-zero in transition from State 2 to State 3, if any for a given pkt
self._total_pkt_len = 0 # sum of _pkt_hdr_len and _pkt_ext_len for any given pkt
self._ser_num = (
30000
) # 0x7530: choose higher number than expected from regular Mozaic, RZ100, or Tessera; @fixme: what about multi-Mediator systems?
# Prepare to send pkts by breaking _ser_num into component bytes:
self._ser_num_bytes = long_to_bytes(self._ser_num)
self._low_rzc = sys.maxint # listen for and store lowest dst/src address
self._high_rzc = 0 # listen for and store highest dst/src address
def create_pkt(self, dst, pkt_type, hdr_data=0x0000, ext_data=None):
# @fixme: Add processing for extended pkts.
assert isinstance(dst, int), 'RzvcIfWrap.create_pkt(): Param "dst" not an integer!'
dst_bytes = long_to_bytes(dst)
pkt_buf = array.array(
"B",
[
0x16,
0x01,
dst_bytes[0],
dst_bytes[1],
dst_bytes[2],
dst_bytes[3],
self._ser_num_bytes[0],
self._ser_num_bytes[1],
self._ser_num_bytes[2],
self._ser_num_bytes[3],
pkt_type,
hdr_data,
(hdr_data >> 8),
0x00,
],
)
pkt_buf[self._pkt_hdr_chksum_idx] = checksum(pkt_buf, 2, self._pkt_hdr_chksum_idx - 1)
return pkt_buf
def create_pkt(self, dst, pkt_type, hdr_data = 0x0000, ext_data = None):
#@fixme: Add processing for extended pkts.
assert isinstance(dst, int), 'RzvcIfWrap.create_pkt(): Param "dst" not an integer!'
dst_bytes = long_to_bytes(dst)
pkt_buf = array.array('B', [0x16, 0x01, dst_bytes[0], dst_bytes[1], dst_bytes[2], dst_bytes[3], \
self._ser_num_bytes[0], self._ser_num_bytes[1], self._ser_num_bytes[2], self._ser_num_bytes[3], \
pkt_type, hdr_data, (hdr_data >> 8), 0x00])
pkt_buf[self._pkt_hdr_chksum_idx] = checksum(pkt_buf, 2, self._pkt_hdr_chksum_idx - 1)
return pkt_buf
