def nlmsg_parse(nlh, hdrlen, tb, maxtype, policy):
if not nlmsg_valid_hdr(nlh, hdrlen):<EOL><INDENT>return -NLE_MSG_TOOSHORT<EOL><DEDENT>return nla_parse(tb, maxtype, nlmsg_attrdata(nlh, hdrlen), nlmsg_attrlen(nlh, hdrlen), policy)<EOL>
Parse attributes of a Netlink message.

    https://github.com/thom311/libnl/blob/libnl3_2_25/lib/msg.c#L213

    Positional arguments:
    nlh -- Netlink message header (nlmsghdr class instance).
    hdrlen -- length of family specific header (integer).
    tb -- dictionary of nlattr instances (length of maxtype+1).
    maxtype -- maximum attribute type to be expected (integer).
    policy -- validation policy (nla_policy class instance).

    Returns:
    0 on success or a negative error code.