ynl/lib/ynl.py

17 # Generic Netlink code which should really be in some library, but I can't quickly find one.
21 class Netlink:  class
22     # Netlink socket
30     # Netlink message
84     return f"Netlink error: {os.strerror(-self.nl_msg.error)}\n{self.nl_msg}"
102         self.type = self._type & ~Netlink.NLA_TYPE_MASK
103         self.is_nest = self._type & Netlink.NLA_F_NESTED
206         if self.nl_type == Netlink.NLMSG_ERROR:
210         elif self.nl_type == Netlink.NLMSG_DONE:
215         if self.nl_flags & Netlink.NLM_F_ACK_TLVS and extack_off:
219                 if extack.type == Netlink.NLMSGERR_ATTR_MSG:
221                 elif extack.type == Netlink.NLMSGERR_ATTR_MISS_TYPE:
223                 elif extack.type == Netlink.NLMSGERR_ATTR_MISS_NEST:
225                 elif extack.type == Netlink.NLMSGERR_ATTR_OFFS:
286     with socket.socket(socket.AF_NETLINK, socket.SOCK_RAW, Netlink.NETLINK_GENERIC) as sock:
287         sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_CAP_ACK, 1)
289         msg = _genl_msg(Netlink.GENL_ID_CTRL,
290                         Netlink.NLM_F_REQUEST | Netlink.NLM_F_ACK | Netlink.NLM_F_DUMP,
291                         Netlink.CTRL_CMD_GETFAMILY, 1)
304                     print("Netlink error:", nl_msg.error)
312                     if attr.type == Netlink.CTRL_ATTR_FAMILY_ID:
314                     elif attr.type == Netlink.CTRL_ATTR_FAMILY_NAME:
316                     elif attr.type == Netlink.CTRL_ATTR_MAXATTR:
318                     elif attr.type == Netlink.CTRL_ATTR_MCAST_GROUPS:
324                                 if entry_attr.type == Netlink.CTRL_ATTR_MCAST_GRP_NAME:
326                                 elif entry_attr.type == Netlink.CTRL_ATTR_MCAST_GRP_ID:
385         super().__init__(family_name, Netlink.NETLINK_GENERIC)
421             if self.proto == "netlink-raw":
430         self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_CAP_ACK, 1)
431         self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_EXT_ACK, 1)
432         self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_GET_STRICT_CHK, 1)
449         self.sock.setsockopt(Netlink.SOL_NETLINK, Netlink.NETLINK_ADD_MEMBERSHIP,
459             nl_type |= Netlink.NLA_F_NESTED
726                     print("Netlink error in ntf!?", os.strerror(-nl_msg.error))
730                     print("Netlink done while checking for ntf!?")
754         nl_flags = Netlink.NLM_F_REQUEST | Netlink.NLM_F_ACK
758             nl_flags |= Netlink.NLM_F_DUMP
793                         print("Netlink warning:")