openstack
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neutron
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Merge "Define types for C calls in netlink_lib"

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Zuul 2019-01-10 07:24:00 +00:00 committed by Gerrit Code Review
parent 4cddf62bbe c6d358d4c6
commit 6749ebec19
1 changed files with 36 additions and 1 deletions
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37
neutron/privileged/agent/linux/netlink_lib.py
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@ -49,9 +49,44 @@ from neutron.privileged.agent.linux import netlink_constants as nl_constants
LOG = logging.getLogger(__name__)
nfct = ctypes.CDLL(util.find_library('netfilter_conntrack'))
nfct_lib = util.find_library('netfilter_conntrack')
nfct = ctypes.CDLL(nfct_lib)
libc = ctypes.CDLL(util.find_library('libc.so.6'))
# In unit tests the actual nfct library may not be installed, and since we
# don't make actual calls to it we don't want to add a hard dependency.
if nfct_lib:
# It's important that the types be defined properly on all of the functions
# we call from nfct, otherwise pointers can be truncated and cause
# segfaults.
nfct.nfct_set_attr.argtypes = [ctypes.c_void_p,
ctypes.c_int,
ctypes.c_void_p]
nfct.nfct_set_attr_u8.argtypes = [ctypes.c_void_p,
ctypes.c_int,
ctypes.c_uint8]
nfct.nfct_set_attr_u16.argtypes = [ctypes.c_void_p,
ctypes.c_int,
ctypes.c_uint16]
nfct.nfct_snprintf.argtypes = [ctypes.c_char_p,
ctypes.c_uint,
ctypes.c_void_p,
ctypes.c_uint,
ctypes.c_uint,
ctypes.c_uint]
nfct.nfct_new.restype = ctypes.c_void_p
nfct.nfct_destroy.argtypes = [ctypes.c_void_p]
nfct.nfct_query.argtypes = [ctypes.c_void_p,
ctypes.c_int,
ctypes.c_void_p]
nfct.nfct_callback_register.argtypes = [ctypes.c_void_p,
ctypes.c_int,
ctypes.c_void_p,
ctypes.c_void_p]
nfct.nfct_open.restype = ctypes.c_void_p
nfct.nfct_close.argtypes = [ctypes.c_void_p]
IP_VERSIONS = [constants.IP_VERSION_4, constants.IP_VERSION_6]
DATA_CALLBACK = None