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from __future__ import print_function
import argparse
import os
import subprocess
import sys
import tempfile
import tools_version
PROG = 'mstprivhost'
TOOL_VERSION = "1.0.0"
CMD_HELP = """\
restrict: Set host 1 (ARM) privileged, host 0 (x86_64) restricted.
privilege: Set host 1 (ARM) privileged, host 0 (x86_64) privileged
(back to default).
"""
DESCRIPTION = """\
restrict or privilege host
Note: New configurations takes effect immediately.
Note: privileged host - host has all supported privileges.
restricted host - host is not allowed to modify global
per port/parameters or access other hosts parametersis.
"""
DISABLE_RSHIM_HELP = """\
When TRUE, the host does not have an RSHIM function
to access the embedded CPU registers
mlxconfig_name: HOST_DISABLE_RSHIM
"""
DISABLE_TRACER_HELP = """\
When TRUE, the host will not be allowed to own the Tracer
mlxconfig_name: HOST_DISABLE_TRACER_OWNER
"""
DISABLE_COUNTER_RD_HELP = """\
When TRUE, the host will not be allowed to read Physical port counters
mlxconfig_name: HOST_DISABLE_PORT_COUNTER
"""
DISABLE_PORT_OWNER_HELP = """\
When TRUE, the host will not be allowed to be Port Owner
mlxconfig_name: HOST_DISABLE_PORT_OWNER
"""
def _log(level, msg, *args, **kw):
if args:
msg = msg % args
print(level, msg, end=kw.get('end', '\n'))
def info(msg, *args, **kw):
_log("-I-", msg, *args, **kw)
def error(msg, *args, **kw):
_log("-E-", msg, *args, **kw)
class PrivilegeException(Exception):
pass
class PrivilegeMgr(object):
CONFIG_CMD_LINE = "mlxconfig -d %s -f %s --yes set_raw"
MCRA_CMD_LINE = "mcra %s 0xf0014.0:16"
BLUE_FIELD_DEV_ID = 0x211
TITLE = "MLNX_RAW_TLV_FILE\n"
RAW_BYTES = "0x03000204 0x07000083 0x00000000"
LIMITED = 0x10000000
DISABLE_PORT_OWNER = 0x01
DISABLE_COUNTER_RD = 0x02
DISABLE_TRACER = 0x04
DISABLE_RSHIM = 0x08
RESTRICT_BYTES = "0x03000204 0x07000083 0x00000000 0x1000000f"
PRIVILEGE_BYTES = "0x03000204 0x07000083 0x00000000 0x00000000"
def __init__(self, device, privilege, disable_rshim, disable_tracer,
disable_counter_rd, disable_port_owner):
self._privilege = privilege
self._device = device
self._file_p = tempfile.NamedTemporaryFile(
suffix='.raw', prefix="nvconfig_setting_")
self._file_name = self._file_p.name
self._nv_host_priv_conf = 0
if not self._privilege:
self._nv_host_priv_conf = self.LIMITED
if disable_rshim:
self._nv_host_priv_conf |= self.DISABLE_RSHIM
if disable_tracer:
self._nv_host_priv_conf |= self.DISABLE_TRACER
if disable_counter_rd:
self._nv_host_priv_conf |= self.DISABLE_COUNTER_RD
if disable_port_owner:
self._nv_host_priv_conf |= self.DISABLE_PORT_OWNER
def prepare(self):
info("preparing configuration file...", end='')
self._file_p.write(self.TITLE)
nv_host_priv_conf_str = '0x%08x' % self._nv_host_priv_conf
conf_bytes = " ".join((self.RAW_BYTES, nv_host_priv_conf_str))
self._file_p.write(conf_bytes)
self._file_p.flush()
print("Done!")
@staticmethod
def _exec_cmd(cmd):
p = subprocess.Popen(cmd,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True,
shell=True)
stdout, stderr = p.communicate()
exit_code = p.wait()
return (exit_code, stdout, stderr)
def configure(self):
info("configuring device...", end='')
cmd = self.CONFIG_CMD_LINE % (self._device, self._file_name)
exit_code, stdout, stderr = self._exec_cmd(cmd)
if exit_code != 0:
print("Failed")
print(stdout + stderr)
else:
print("Done!")
return exit_code
def cleanup(self):
self._file_p.close()
if os.path.isfile(self._file_name):
os.remove(self._file_name)
def validate(self):
# get device ID
cmd_line = self.MCRA_CMD_LINE % self._device
exit_code, stdout, _ = self._exec_cmd(cmd_line)
if exit_code != 0:
raise PrivilegeException("Unknow device '%s'!" % self._device)
dev_id = int(stdout, 16)
if dev_id != self.BLUE_FIELD_DEV_ID:
raise PrivilegeException(
"Device '%s' is not supported, "
"only BlueField devices are supported!" % self._device)
def parse_args():
parser = argparse.ArgumentParser(
prog=PROG, description=DESCRIPTION,
formatter_class=argparse.RawTextHelpFormatter,
version=tools_version.GetVersionString(PROG, TOOL_VERSION))
# options arguments
options_group = parser.add_argument_group('Options')
options_group.add_argument(
'--device',
'-d',
required=True,
help='Device to work with.')
# command arguments
command_group = parser.add_argument_group('Commands')
command_group.add_argument(
'command',
nargs=1,
choices=["r", "restrict", "p", "privilege"],
help=CMD_HELP)
options_group.add_argument('--disable_rshim', action="store_true",
help=DISABLE_RSHIM_HELP)
options_group.add_argument('--disable_tracer', action="store_true",
help=DISABLE_TRACER_HELP)
options_group.add_argument('--disable_counter_rd', action="store_true",
help=DISABLE_COUNTER_RD_HELP)
options_group.add_argument('--disable_port_owner', action="store_true",
help=DISABLE_PORT_OWNER_HELP)
args = parser.parse_args()
if args.command[0] in ("p", "privilege"):
if args.disable_rshim or args.disable_tracer or \
args.disable_counter_rd or args.disable_port_owner:
parser.error("disable flags are not allowed in privilege mode")
return args
def main():
args = parse_args()
device = args.device
command = args.command[0]
if command in ("p", "privilege"):
privilege = True
elif command in ("r", "restrict"):
privilege = False
retcode = 0
mgr = PrivilegeMgr(device, privilege, args.disable_rshim,
args.disable_tracer, args.disable_counter_rd,
args.disable_port_owner)
try:
mgr.validate()
mgr.prepare()
retcode = mgr.configure()
except PrivilegeException as exc:
error(str(exc))
retcode = 1
except Exception as exc:
error("got an error: %s", str(exc))
retcode = 1
except(KeyboardInterrupt, SystemExit):
print("\nInterrupted!\nExiting")
retcode = 1
finally:
mgr.cleanup()
return retcode
if __name__ == "__main__":
sys.exit(main())
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