@@ -7,6 +7,7 @@ import random
import socket
import struct
from struct import Struct
+import sys
import yaml
import ipaddress
import uuid
@@ -420,6 +421,7 @@ genl_family_name_to_id = None
except KeyError:
raise Exception(f"Family '{self.yaml['name']}' not supported by the kernel")
+ self._recv_dbg = False
# Note that netlink will use conservative (min) message size for
# the first dump recv() on the socket, our setting will only matter
# from the second recv() on.
@@ -453,6 +455,17 @@ genl_family_name_to_id = None
self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_ADD_MEMBERSHIP,
mcast_id)
+ def set_recv_dbg(self, enabled):
+ self._recv_dbg = enabled
+
+ def _recv_dbg_print(self, reply, nl_msgs):
+ if not self._recv_dbg:
+ return
+ print("Recv: read", len(reply), "bytes,",
+ len(nl_msgs.msgs), "messages", file=sys.stderr)
+ for nl_msg in nl_msgs:
+ print(" ", nl_msg, file=sys.stderr)
+
def _encode_enum(self, attr_spec, value):
enum = self.consts[attr_spec['enum']]
if enum.type == 'flags' or attr_spec.get('enum-as-flags', False):
@@ -819,6 +832,7 @@ genl_family_name_to_id = None
return
nms = NlMsgs(reply)
+ self._recv_dbg_print(reply, nms)
for nl_msg in nms:
if nl_msg.error:
print("Netlink error in ntf!?", os.strerror(-nl_msg.error))
@@ -871,6 +885,7 @@ genl_family_name_to_id = None
while not done:
reply = self.sock.recv(self._recv_size)
nms = NlMsgs(reply, attr_space=op.attr_set)
+ self._recv_dbg_print(reply, nms)
for nl_msg in nms:
if nl_msg.extack:
self._decode_extack(msg, op, nl_msg.extack)