def parse_and_run_test(program, pkt, init_state='start', init_ctrl='', debug=0):
p4 = compile_string( program=program )
if not p4:
print "Hmmm. Syntax error?"
sys.exit(1)
runtime = Runtime(p4)
p4.check_self_consistent()
err, bytes_used = runtime.parse_packet(pkt, init_state)
if err:
return (p4, err, bytes_used)
if init_ctrl: run_control_function(p4, pkt, init_ctrl )
return (p4, '', bytes_used )
def process_pkts(p4, runtime, pkts=[], init_state='start', init_ctrl='', debug=0):
total_bytes_used = 0
pkts_out = []
for pkt in pkts:
err, bytes_used = runtime.parse_packet(pkt, init_state)
if err:
return (err, bytes_used, pkts_out)
if init_ctrl:
run_control_function( p4, pkt, init_ctrl )
pkt_out = p4.deparse_packet(pkt, bytes_used)
pkts_out.append(pkt_out)
total_bytes_used += bytes_used
return ('', total_bytes_used, pkts_out )
def setup_tables_parse_and_run_test( program, setup_cmds=[], pkts=[],
init_state='start', init_ctrl='', debug=0):
p4, runtime = create_P4_and_runtime(program, debug=0)
for cmd in setup_cmds:
runtime.run_cmd(cmd)
total_bytes_used = 0
for pkt in pkts:
err, bytes_used = runtime.parse_packet(pkt, init_state)
if err:
return (p4, err, bytes_used)
if init_ctrl: run_control_function(p4, pkt, init_ctrl )
total_bytes_used += bytes_used
return (p4, '', total_bytes_used )
