nico/master-thesis
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

import more python files used in the project from netfpga

Browse source
This commit is contained in:
Nico Schottelius 2019-07-27 19:00:20 +02:00
commit 9a03ee1c3f
2 changed files with 375 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

90
netpfga/minip4/sw/CLI/p4_regs_api.py Normal file
View file

@ -0,0 +1,90 @@
#!/usr/bin/env python
#
# Copyright (c) 2015 University of Cambridge
# All rights reserved.
#
# This software was developed by Stanford University and the University of Cambridge Computer Laboratory
# under National Science Foundation under Grant No. CNS-0855268,
# the University of Cambridge Computer Laboratory under EPSRC INTERNET Project EP/H040536/1 and
# by the University of Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249 ("MRC2"),
# as part of the DARPA MRC research programme.
#
# @NETFPGA_LICENSE_HEADER_START@
#
# Licensed to NetFPGA C.I.C. (NetFPGA) under one or more contributor
# license agreements. See the NOTICE file distributed with this work for
# additional information regarding copyright ownership. NetFPGA licenses this
# file to you under the NetFPGA Hardware-Software License, Version 1.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at:
#
# http://www.netfpga-cic.org
#
# Unless required by applicable law or agreed to in writing, Work distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.
#
# @NETFPGA_LICENSE_HEADER_END@
#
from NFTest import *
import sys, os, re, json
from fcntl import *
from ctypes import *
from collections import OrderedDict
# Loading the SUME shared library
print "loading libsume.."
lib_path=os.path.join(os.environ['SUME_FOLDER'],'lib','sw','std','hwtestlib','libsume.so')
libsume=cdll.LoadLibrary(lib_path)
# argtypes for the functions called from C
libsume.regread.argtypes = [c_uint]
libsume.regwrite.argtypes= [c_uint, c_uint]
EXTERN_DEFINES_FILE = os.path.expandvars("$P4_PROJECT_DIR/sw/CLI/SimpleSumeSwitch_extern_defines.json")
ERROR_CODE = -1
"""
Read the SimpleSumeSwitch_reg_defines.txt file
"""
def read_extern_defines():
with open(EXTERN_DEFINES_FILE) as f:
p4_externs = json.load(f)
return p4_externs
def get_address(reg_name, index):
global PX_EXTERNS
if reg_name not in P4_EXTERNS.keys() and 'control_width' not in P4_EXTERNS[reg_name].keys() and P4_EXTERNS[reg_name]['control_width'] > 0:
print >> sys.stderr, "ERROR: {0} is not a recognized register name".format(reg_name)
return ERROR_CODE
addressable_depth = 2**P4_EXTERNS[reg_name]['control_width']
if index >= addressable_depth or index < 0:
print >> sys.stderr, "ERROR: cannot access {0}[{1}], index out of bounds".format(reg_name, index)
return ERROR_CODE
return P4_EXTERNS[reg_name]['base_addr'] + index
# P4_EXTERNS is indexed by prefix_name
P4_EXTERNS = read_extern_defines()
#####################
### API Functions ###
#####################
def reg_read(reg_name, index):
address = get_address(reg_name, index)
if address == ERROR_CODE:
return ERROR_CODE
# print "reading address : {0}".format(hex(address))
return libsume.regread(address)
def reg_write(reg_name, index, val):
address = get_address(reg_name, index)
if address == ERROR_CODE:
return ERROR_CODE
# print "writing address : {0}".format(hex(address))
return libsume.regwrite(address, val)

285
netpfga/minip4/sw/CLI/p4_tables_api.py Normal file
View file

@ -0,0 +1,285 @@
#!/usr/bin/env python
#
# Copyright (c) 2017 Stephen Ibanez
# All rights reserved.
#
# This software was developed by Stanford University and the University of Cambridge Computer Laboratory
# under National Science Foundation under Grant No. CNS-0855268,
# the University of Cambridge Computer Laboratory under EPSRC INTERNET Project EP/H040536/1 and
# by the University of Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249 ("MRC2"),
# as part of the DARPA MRC research programme.
#
# @NETFPGA_LICENSE_HEADER_START@
#
# Licensed to NetFPGA C.I.C. (NetFPGA) under one or more contributor
# license agreements. See the NOTICE file distributed with this work for
# additional information regarding copyright ownership. NetFPGA licenses this
# file to you under the NetFPGA Hardware-Software License, Version 1.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at:
#
# http://www.netfpga-cic.org
#
# Unless required by applicable law or agreed to in writing, Work distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.
#
# @NETFPGA_LICENSE_HEADER_END@
#
from NFTest import *
import sys, os, re, json
from fcntl import *
from ctypes import *
SWITCH_INFO_FILE = os.path.expandvars("$P4_PROJECT_DIR/src/.sdnet_switch_info.dat")
# sets PX_TABLES
import p4_px_tables
p4_px_tables.make_px_tables(SWITCH_INFO_FILE)
PX_CAM_TABLES = {}
PX_TCAM_TABLES = {}
PX_LPM_TABLES = {}
def split_px_tables():
for name, table in p4_px_tables.PX_TABLES.items():
if table.info['match_type'] == 'EM':
PX_CAM_TABLES[name] = table
elif table.info['match_type'] == 'TCAM':
PX_TCAM_TABLES[name] = table
elif table.info['match_type'] == 'LPM':
PX_LPM_TABLES[name] = table
split_px_tables()
if (len(PX_CAM_TABLES) > 0):
print "loading libcam.."
libcam=cdll.LoadLibrary(os.path.expandvars('$P4_PROJECT_DIR/sw/CLI/libcam.so'))
# argtypes for the functions called from C
libcam.cam_read_entry.argtypes = [c_uint, c_char_p, c_char_p, c_char_p]
libcam.cam_add_entry.argtypes = [c_uint, c_char_p, c_char_p]
libcam.cam_delete_entry.argtypes = [c_uint, c_char_p]
libcam.cam_error_decode.argtypes = [c_int]
libcam.cam_error_decode.restype = c_char_p
libcam.cam_get_size.argtypes = [c_uint]
libcam.cam_get_size.restype = c_uint
if (len(PX_TCAM_TABLES) > 0):
print "loading libtcam.."
libtcam=cdll.LoadLibrary(os.path.expandvars('$P4_PROJECT_DIR/sw/CLI/libtcam.so'))
# argtypes for the functions called from C
libtcam.tcam_clean.argtypes = [c_uint]
libtcam.tcam_get_addr_size.argtypes = []
libtcam.tcam_set_log_level.argtypes = [c_uint, c_uint]
libtcam.tcam_write_entry.argtypes = [c_uint, c_uint, c_char_p, c_char_p, c_char_p]
libtcam.tcam_erase_entry.argtypes = [c_uint, c_uint]
libtcam.tcam_verify_entry.argtypes = [c_uint, c_uint, c_char_p, c_char_p, c_char_p]
libtcam.tcam_verify_entry.restype = c_uint
libtcam.tcam_error_decode.argtypes = [c_int]
libtcam.tcam_error_decode.restype = c_char_p
if (len(PX_LPM_TABLES) > 0):
print "loading liblpm.."
liblpm=cdll.LoadLibrary(os.path.expandvars('$P4_PROJECT_DIR/sw/CLI/liblpm.so'))
# argtypes for the functions called from C
liblpm.lpm_get_addr_size.argtypes = []
liblpm.lpm_set_log_level.argtypes = [c_uint, c_uint]
liblpm.lpm_load_dataset.argtypes = [c_uint, c_char_p]
liblpm.lpm_verify_dataset.argtypes = [c_uint, c_char_p]
liblpm.lpm_set_active_lookup_bank.argtypes = [c_uint, c_uint]
liblpm.lpm_error_decode.argtypes = [c_int]
liblpm.lpm_error_decode.restype = c_char_p
TABLE_DEFINES_FILE = os.path.expandvars("$P4_PROJECT_DIR/sw/CLI/SimpleSumeSwitch_table_defines.json")
########################
### Helper Functions ###
########################
"""
def the SimpleSumeSwitch_table_defines.json file
"""
def read_table_defines():
with open(TABLE_DEFINES_FILE) as f:
tables_dict = json.load(f)
return tables_dict
p4_tables_info = read_table_defines()
"""
Check if table_name is a valid CAM table
"""
def check_valid_cam_table_name(table_name):
if (table_name not in PX_CAM_TABLES.keys() and table_name not in p4_tables_info['EM'].keys()):
print >> sys.stderr, "ERROR: {0} is not a recognized CAM table name".format(table_name)
return False
return True
"""
Check if table_name is a valid TCAM table
"""
def check_valid_tcam_table_name(table_name):
if (table_name not in PX_TCAM_TABLES.keys() and table_name not in p4_tables_info['TCAM'].keys()):
print >> sys.stderr, "ERROR: {0} is not a recognized TCAM table name".format(table_name)
return False
return True
"""
Check if table_name is a valid LPM table
"""
def check_valid_lpm_table_name(table_name):
if (table_name not in PX_LPM_TABLES.keys() and table_name not in p4_tables_info['LPM'].keys()):
print >> sys.stderr, "ERROR: {0} is not a recognized LPM table name".format(table_name)
return False
return True
#########################
### CAM API Functions ###
#########################
def table_cam_read_entry(table_name, keys):
if not check_valid_cam_table_name(table_name):
return "NA", "NA"
tableID = int(p4_tables_info['EM'][table_name]['tableID'])
key = PX_CAM_TABLES[table_name].hexify_key(keys)
hex_key_buf = create_string_buffer("{:X}".format(key))
value = create_string_buffer(1024) # TODO: Fix this ... Must be large enough to hold entire value
found = create_string_buffer(10) # Should only need to hold "True" or "False"
rc = libcam.cam_read_entry(tableID, hex_key_buf, value, found)
print libcam.cam_error_decode(rc)
return found.value, value.value
def table_cam_add_entry(table_name, keys, action_name, action_data):
if not check_valid_cam_table_name(table_name):
return
tableID = int(p4_tables_info['EM'][table_name]['tableID'])
key = PX_CAM_TABLES[table_name].hexify_key(keys)
value = PX_CAM_TABLES[table_name].hexify_value(action_name, action_data)
rc = libcam.cam_add_entry(tableID, "{:X}".format(key), "{:X}".format(value))
print libcam.cam_error_decode(rc)
def table_cam_delete_entry(table_name, keys):
if not check_valid_cam_table_name(table_name):
return
tableID = int(p4_tables_info['EM'][table_name]['tableID'])
key = PX_CAM_TABLES[table_name].hexify_key(keys)
rc = libcam.cam_delete_entry(tableID, "{:X}".format(key))
print libcam.cam_error_decode(rc)
def table_cam_get_size(table_name):
if not check_valid_cam_table_name(table_name):
return 0
tableID = int(p4_tables_info['EM'][table_name]['tableID'])
return libcam.cam_get_size(tableID)
##########################
### TCAM API Functions ###
##########################
def table_tcam_clean(table_name):
if not check_valid_tcam_table_name(table_name):
return
tableID = int(p4_tables_info['TCAM'][table_name]['tableID'])
rc = libtcam.tcam_clean(tableID)
print libtcam.tcam_error_decode(rc)
def table_tcam_get_addr_size():
return libtcam.tcam_get_addr_size()
def table_tcam_set_log_level(table_name, msg_level):
if not check_valid_tcam_table_name(table_name):
return
tableID = int(p4_tables_info['TCAM'][table_name]['tableID'])
rc = libtcam.tcam_set_log_level(tableID, msg_level)
print libtcam.tcam_error_decode(rc)
def table_tcam_write_entry(table_name, addr, keys, masks, action_name, action_data):
if not check_valid_tcam_table_name(table_name):
return
tableID = int(p4_tables_info['TCAM'][table_name]['tableID'])
mask = PX_TCAM_TABLES[table_name].hexify_mask(masks)
key = PX_TCAM_TABLES[table_name].hexify_key(keys)
value = PX_TCAM_TABLES[table_name].hexify_value(action_name, action_data)
rc = libtcam.tcam_write_entry(tableID, addr, "{:X}".format(key), "{:X}".format(mask), "{:X}".format(value))
print libtcam.tcam_error_decode(rc)
def table_tcam_erase_entry(table_name, addr):
if not check_valid_tcam_table_name(table_name):
return
tableID = int(p4_tables_info['TCAM'][table_name]['tableID'])
rc = libtcam.tcam_erase_entry(tableID, addr)
print libtcam.tcam_error_decode(rc)
def table_tcam_verify_entry(table_name, addr, keys, masks, action_name, action_data):
if not check_valid_tcam_table_name(table_name):
return
tableID = int(p4_tables_info['TCAM'][table_name]['tableID'])
mask = PX_TCAM_TABLES[table_name].hexify_mask(masks)
key = PX_TCAM_TABLES[table_name].hexify_key(keys)
value = PX_TCAM_TABLES[table_name].hexify_value(action_name, action_data)
return libtcam.tcam_verify_entry(tableID, addr, "{:X}".format(key), "{:X}".format(mask), "{:X}".format(value))
def table_tcam_error_decode(error):
return libtcam.tcam_error_decode(error)
#########################
### LPM API Functions ###
#########################
def table_lpm_get_addr_size():
return liblpm.lpm_get_addr_size()
def table_lpm_set_log_level(table_name):
if not check_valid_lpm_table_name(table_name):
return
tableID = int(p4_tables_info['LPM'][table_name]['tableID'])
rc = liblpm.lpm_set_log_level(tableID, msg_level)
print liblpm.lpm_error_decode(rc)
def table_lpm_load_dataset(table_name, filename):
if not check_valid_lpm_table_name(table_name):
return
tableID = int(p4_tables_info['LPM'][table_name]['tableID'])
rc = liblpm.lpm_load_dataset(tableID, filename)
print liblpm.lpm_error_decode(rc)
def table_lpm_verify_dataset(table_name, filename):
if not check_valid_lpm_table_name(table_name):
return
tableID = int(p4_tables_info['LPM'][table_name]['tableID'])
return liblpm.lpm_verify_dataset(tableID, filename)
def table_lpm_set_active_lookup_bank(table_name, bank):
if not check_valid_lpm_table_name(table_name):
return
tableID = int(p4_tables_info['LPM'][table_name]['tableID'])
rc = liblpm.lpm_set_active_lookup_bank(tableID, bank)
print liblpm.lpm_error_decode(rc)
def table_lpm_error_decode(error):
return liblpm.lpm_error_decode(error)