Need help parsing survey_info

[frainz-de]

Hi,
sorry if this is the wrong place to ask. I'm pretty new to this library and netlink in general.
I want to access the survey data from python, similarly to what iw dev <interface> survey dump does. I already get a result from the kernel, but I have trouble parsing it. This is the code I use:

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import pprint
import sys
sys.path.append('/usr/lib/python3.9/site-packages')
import pyroute2
import struct

ifname = "wlp6s0f3u3"

iw = pyroute2.iwutil.IW()

ip = pyroute2.IPRoute()
ifindex = ip.link_lookup(ifname=ifname)[0]
ip.close()

msg = pyroute2.netlink.nl80211.nl80211cmd()
msg['cmd'] = pyroute2.netlink.nl80211.NL80211_NAMES['NL80211_CMD_GET_SURVEY']
msg['attrs'] = [['NL80211_ATTR_IFINDEX', ifindex]]

result = iw.nlm_request(msg,
                           msg_type=iw.prid,
                           msg_flags=pyroute2.netlink.NLM_F_REQUEST | pyroute2.netlink.NLM_F_DUMP)

pp = pprint.PrettyPrinter(indent=4)
pp.pprint(result)

results = [entry['attrs'][1][1].replace(":"," ") for entry in result]

results_bytes = [bytearray.fromhex(i) for i in results]

As a result, I get this:

Script output

(   {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:6c:09:00:00:04:00:03:00:0c:00:04:00:2e:20:1a:00:00:00:00:00:0c:00:05:00:81:45:01:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00:0c:00:0b:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 92,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:71:09:00:00:0c:00:04:00:46:00:00:00:00:00:00:00:0c:00:05:00:0d:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:76:09:00:00:0c:00:04:00:43:00:00:00:00:00:00:00:0c:00:05:00:0f:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:7b:09:00:00:0c:00:04:00:43:00:00:00:00:00:00:00:0c:00:05:00:1c:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:80:09:00:00:0c:00:04:00:43:00:00:00:00:00:00:00:0c:00:05:00:02:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:85:09:00:00:0c:00:04:00:47:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:8a:09:00:00:0c:00:04:00:43:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:8f:09:00:00:0c:00:04:00:46:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:94:09:00:00:0c:00:04:00:47:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:99:09:00:00:0c:00:04:00:43:00:00:00:00:00:00:00:0c:00:05:00:02:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:9e:09:00:00:0c:00:04:00:46:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:a3:09:00:00:0c:00:04:00:78:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:a8:09:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:b4:09:00:00:0c:00:04:00:78:00:00:00:00:00:00:00:0c:00:05:00:03:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:3c:14:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:50:14:00:00:0c:00:04:00:43:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:64:14:00:00:0c:00:04:00:43:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:78:14:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:8c:14:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:a0:14:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:b4:14:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:c8:14:00:00:0c:00:04:00:79:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:7c:15:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:90:15:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:a4:15:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:04:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:b8:15:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:09:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:cc:15:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:e0:15:00:00:0c:00:04:00:78:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:f4:15:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:08:16:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:02:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:1c:16:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:01:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:30:16:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:44:16:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:58:16:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:71:16:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:85:16:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:99:16:00:00:0c:00:04:00:72:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:ad:16:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 6),
                     ('NL80211_ATTR_SURVEY_INFO', '08:00:01:00:c1:16:00:00:0c:00:04:00:75:00:00:00:00:00:00:00:0c:00:05:00:00:00:00:00:00:00:00:00:0c:00:08:00:00:00:00:00:00:00:00:00')],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 188628,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 33},
        'reserved': 0,
        'version': 1})

According to https://elixir.bootlin.com/linux/latest/source/include/net/cfg80211.h#L935 the first four bytes should be the channel band of the survey result, but they are the same in every entry, even though iw shows results for 2.4 and 5 GHz like this:

iw output

Survey data from wlp6s0f3u3
	frequency:			2412 MHz [in use]
	channel active time:		760028 ms
	channel busy time:		38045 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2417 MHz
	channel active time:		66 ms
	channel busy time:		19 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2422 MHz
	channel active time:		70 ms
	channel busy time:		15 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2427 MHz
	channel active time:		70 ms
	channel busy time:		20 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2432 MHz
	channel active time:		67 ms
	channel busy time:		1 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2437 MHz
	channel active time:		74 ms
	channel busy time:		5 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2442 MHz
	channel active time:		71 ms
	channel busy time:		2 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2447 MHz
	channel active time:		71 ms
	channel busy time:		2 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2452 MHz
	channel active time:		70 ms
	channel busy time:		1 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2457 MHz
	channel active time:		67 ms
	channel busy time:		1 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2462 MHz
	channel active time:		70 ms
	channel busy time:		1 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2467 MHz
	channel active time:		117 ms
	channel busy time:		1 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2472 MHz
	channel active time:		114 ms
	channel busy time:		1 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			2484 MHz
	channel active time:		117 ms
	channel busy time:		3 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5180 MHz
	channel active time:		114 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5200 MHz
	channel active time:		67 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5220 MHz
	channel active time:		71 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5240 MHz
	channel active time:		114 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5260 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5280 MHz
	channel active time:		114 ms
	channel busy time:		1 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5300 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5320 MHz
	channel active time:		113 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5500 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5520 MHz
	channel active time:		114 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5540 MHz
	channel active time:		117 ms
	channel busy time:		3 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5560 MHz
	channel active time:		114 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5580 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5600 MHz
	channel active time:		114 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5620 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5640 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5660 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5680 MHz
	channel active time:		114 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5700 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5720 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5745 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5765 MHz
	channel active time:		114 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5785 MHz
	channel active time:		121 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5805 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms
Survey data from wlp6s0f3u3
	frequency:			5825 MHz
	channel active time:		117 ms
	channel busy time:		0 ms
	channel transmit time:		0 ms

I probably don't understand the format of the results. Could you give me some pointers?

[svinota]

Probably the library does not parse the survey info. I'm not sure since I don't work with the wifi code so close :)

But the result is looking as an NLA list for me:

08:00:01:00:6c:09:00:00:04:00:03:00:0c:00:04:00:2e:20:1a:00:00:00:00:00:0c:00:05…

→

08:00 — length
01:00 — type
6c:09:00:00 — value

04:00 — length
03:00 — type
(no value, 4 bytes means only the header — this is a flag NLA)

0c:00 — lengt
04:00 — type
2e:20:1a:00:… — value

I've tried the script on my hardware and it returns nothing, probably the wireless adapter does not support the survey info command.

I'll try to look into the kernel code and update the library to support these NLA types.

PS: I've created a ticket for that — #818

[frainz-de]

Thank you so much, this cleared a lot of things for me.
Is there a list of types somewhere in pyroute2? Otherwise I will have to use https://www.infradead.org/~tgr/libnl/doc/api/group__attr.html

[svinota]

Type descriptions:

pyroute2/pyroute2.core/pr2modules/netlink/__init__.py

Lines 1597 to 2036 in 4dcd1cc

	class nlmsg_atoms(object):
	'''
	A collection of base NLA types
	'''
	__slots__ = ()
	class none(nla_base):
	'''
	'none' type is used to skip decoding of NLA. You can
	also use 'hex' type to dump NLA's content.
	'''
	__slots__ = ()
	def decode(self):
	nla_base.decode(self)
	self.value = None
	class flag(nla_base):
	'''
	'flag' type is used to denote attrs that have no payload
	'''
	__slots__ = ()
	fields = []
	def decode(self):
	nla_base.decode(self)
	self.value = True
	class uint8(nla_base):
	__slots__ = ()
	sql_type = 'INTEGER'
	fields = [('value', 'B')]
	class uint16(nla_base):
	__slots__ = ()
	sql_type = 'INTEGER'
	fields = [('value', 'H')]
	class uint32(nla_base):
	__slots__ = ()
	sql_type = 'BIGINT'
	fields = [('value', 'I')]
	class uint64(nla_base):
	__slots__ = ()
	sql_type = 'BIGINT'
	fields = [('value', 'Q')]
	class int8(nla_base):
	__slots__ = ()
	sql_type = 'INTEGER'
	fields = [('value', 'b')]
	class int16(nla_base):
	__slots__ = ()
	sql_type = 'INTEGER'
	fields = [('value', 'h')]
	class int32(nla_base):
	__slots__ = ()
	sql_type = 'BIGINT'
	fields = [('value', 'i')]
	class int64(nla_base):
	__slots__ = ()
	sql_type = 'BIGINT'
	fields = [('value', 'q')]
	class be8(nla_base):
	__slots__ = ()
	sql_type = 'INTEGER'
	fields = [('value', '>B')]
	class be16(nla_base):
	__slots__ = ()
	sql_type = 'INTEGER'
	fields = [('value', '>H')]
	class be32(nla_base):
	__slots__ = ()
	sql_type = 'BIGINT'
	fields = [('value', '>I')]
	class be64(nla_base):
	__slots__ = ()
	sql_type = 'BIGINT'
	fields = [('value', '>Q')]
	class sbe8(nla_base):
	__slots__ = ()
	sql_type = 'INTEGER'
	fields = [('value', '>b')]
	class sbe16(nla_base):
	__slots__ = ()
	sql_type = 'INTEGER'
	fields = [('value', '>h')]
	class sbe32(nla_base):
	__slots__ = ()
	sql_type = 'BIGINT'
	fields = [('value', '>i')]
	class sbe64(nla_base):
	__slots__ = ()
	sql_type = 'BIGINT'
	fields = [('value', '>q')]
	class ipXaddr(nla_base_string):
	__slots__ = ()
	sql_type = 'TEXT'
	family = None
	def encode(self):
	self['value'] = inet_pton(self.family, self.value)
	nla_base_string.encode(self)
	def decode(self):
	nla_base_string.decode(self)
	self.value = inet_ntop(self.family, self['value'])
	class ip4addr(ipXaddr):
	'''
	Explicit IPv4 address type class.
	'''
	__slots__ = ()
	family = AF_INET
	class ip6addr(ipXaddr):
	'''
	Explicit IPv6 address type class.
	'''
	__slots__ = ()
	family = AF_INET6
	class ipaddr(nla_base_string):
	'''
	This class is used to decode IP addresses according to
	the family. Socket library currently supports only two
	families, AF_INET and AF_INET6.
	We do not specify here the string size, it will be
	calculated in runtime.
	'''
	__slots__ = ()
	sql_type = 'TEXT'
	def encode(self):
	# use real provided family, not implicit
	if self.value.find(':') > -1:
	family = AF_INET6
	else:
	family = AF_INET
	self['value'] = inet_pton(family, self.value)
	nla_base_string.encode(self)
	def decode(self):
	nla_base_string.decode(self)
	# use real provided family, not implicit
	if self.length > 8:
	family = AF_INET6
	else:
	family = AF_INET
	self.value = inet_ntop(family, self['value'])
	class target(nla_base_string):
	'''
	A universal target class. The target type depends on the msg
	family:
	* AF_INET: IPv4 addr, string: "127.0.0.1"
	* AF_INET6: IPv6 addr, string: "::1"
	* AF_MPLS: MPLS labels, 0 .. k: [{"label": 0x20, "ttl": 16}, ...]
	'''
	__slots__ = ()
	sql_type = 'TEXT'
	family = None
	own_parent = True
	def get_family(self):
	if self.family is not None:
	return self.family
	pointer = self
	while pointer.parent is not None:
	pointer = pointer.parent
	return pointer.get('family', AF_UNSPEC)
	def encode(self):
	family = self.get_family()
	if family in (AF_INET, AF_INET6):
	self['value'] = inet_pton(family, self.value)
	elif family == AF_MPLS:
	self['value'] = b''
	if isinstance(self.value, (set, list, tuple)):
	labels = self.value
	else:
	if 'label' in self:
	labels = [{'label': self.get('label', 0),
	'tc': self.get('tc', 0),
	'bos': self.get('bos', 0),
	'ttl': self.get('ttl', 0)}]
	else:
	labels = []
	for record in labels:
	label = (record.get('label', 0) << 12) |\
	(record.get('tc', 0) << 9) |\
	((1 if record.get('bos') else 0) << 8) |\
	record.get('ttl', 0)
	self['value'] += struct.pack('>I', label)
	else:
	raise TypeError('socket family not supported')
	nla_base_string.encode(self)
	def decode(self):
	nla_base_string.decode(self)
	family = self.get_family()
	if family in (AF_INET, AF_INET6):
	self.value = inet_ntop(family, self['value'])
	elif family == AF_MPLS:
	self.value = []
	for i in range(len(self['value']) // 4):
	label = struct.unpack('>I',
	self['value'][i * 4:i * 4 + 4])[0]
	record = {'label': (label & 0xFFFFF000) >> 12,
	'tc': (label & 0x00000E00) >> 9,
	'bos': (label & 0x00000100) >> 8,
	'ttl': label & 0x000000FF}
	self.value.append(record)
	else:
	raise TypeError('socket family not supported')
	class mpls_target(target):
	__slots__ = ()
	family = AF_MPLS
	class l2addr(nla_base):
	'''
	Decode MAC address.
	'''
	__slots__ = ()
	sql_type = 'TEXT'
	fields = [('value', '=6s')]
	def encode(self):
	self['value'] = struct.pack('BBBBBB',
	*[int(i, 16) for i in
	self.value.split(':')])
	nla_base.encode(self)
	def decode(self):
	nla_base.decode(self)
	self.value = ':'.join('%02x' % (i) for i in
	struct.unpack('BBBBBB', self['value']))
	class lladdr(nla_base_string):
	'''
	Decode link layer address: a MAC, IPv4 or IPv6 address. This type
	depends on the link layer address length:
	* 6: MAC addr, string: "52:ff:ff:ff:ff:03"
	* 4: IPv4 addr, string: "127.0.0.1"
	* 16: IPv6 addr, string: "::1"
	* any other length: hex dump
	'''
	__slots__ = ()
	sql_type = 'TEXT'
	def encode(self):
	if ':' in self.value:
	if len(self.value) == 17 and '::' not in self.value:
	self['value'] = struct.pack('BBBBBB',
	*[int(i, 16) for i in
	self.value.split(':')])
	else:
	self['value'] = inet_pton(AF_INET6, self.value)
	elif '.' in self.value:
	self['value'] = inet_pton(AF_INET, self.value)
	else:
	raise TypeError('Unsupported value {}'.format(self.value))
	nla_base_string.encode(self)
	def decode(self):
	nla_base_string.decode(self)
	if len(self['value']) == 6:
	self.value = ':'.join('%02x' % (i) for i in
	struct.unpack('BBBBBB', self['value']))
	elif len(self['value']) == 4:
	self.value = inet_ntop(AF_INET, self['value'])
	elif len(self['value']) == 16:
	self.value = inet_ntop(AF_INET6, self['value'])
	elif len(self['value']) == 0:
	self.value = ''
	else:
	# unknown / invalid lladdr
	# extract data for the whole message
	offset = self.parent.offset
	length = self.parent.length
	data = self.parent.data[offset:offset + length]
	# report
	logging.warning(
	'unknown or invalid lladdr size, please report to: '
	'https://github.com/svinota/pyroute2/issues/717 \n'
	'packet data: %s', hexdump(data))
	# continue with hex dump as the value
	self.value = hexdump(self['value'])
	class hex(nla_base_string):
	'''
	Represent NLA's content with header as hex string.
	'''
	__slots__ = ()
	def decode(self):
	nla_base_string.decode(self)
	self.value = hexdump(self['value'])
	class array(nla_base_string):
	'''
	Array of simple data type
	'''
	__slots__ = (
	"_fmt",
	)
	own_parent = True
	@property
	def fmt(self):
	# try to get format from parent
	# work only with elementary types
	if getattr(self, "_fmt", None) is not None:
	return self._fmt
	try:
	fclass = getattr(self.parent, self._nla_init)
	self._fmt = fclass.fields[0][1]
	except Exception:
	self._fmt = self._nla_init
	return self._fmt
	def encode(self):
	fmt = '%s%i%s' % (self.fmt[:-1], len(self.value), self.fmt[-1:])
	self['value'] = struct.pack(fmt, *self.value)
	nla_base_string.encode(self)
	def decode(self):
	nla_base_string.decode(self)
	data_length = len(self['value'])
	element_size = struct.calcsize(self.fmt)
	array_size = data_length // element_size
	trail = (data_length % element_size) or -data_length
	data = self['value'][:-trail]
	fmt = '%s%i%s' % (self.fmt[:-1], array_size, self.fmt[-1:])
	self.value = struct.unpack(fmt, data)
	class cdata(nla_base_string):
	'''
	Binary data
	'''
	__slots__ = ()
	class string(nla_base_string):
	'''
	UTF-8 string.
	'''
	__slots__ = ()
	sql_type = 'TEXT'
	def encode(self):
	if isinstance(self['value'], str) and sys.version[0] == '3':
	self['value'] = bytes(self['value'], 'utf-8')
	nla_base_string.encode(self)
	def decode(self):
	nla_base_string.decode(self)
	self.value = self['value']
	if sys.version_info[0] >= 3:
	try:
	self.value = self.value.decode('utf-8')
	except UnicodeDecodeError:
	pass # Failed to decode, keep undecoded value
	class asciiz(string):
	'''
	Zero-terminated string.
	'''
	__slots__ = ()
	zstring = 1
	# FIXME: support NLA_FLAG and NLA_MSECS as well.
	#
	# aliases to support standard kernel attributes:
	#
	binary = cdata # NLA_BINARY
	nul_string = asciiz # NLA_NUL_STRING

nl80122 structures: https://github.com/svinota/pyroute2/blob/0.6.4/pyroute2.core/pr2modules/netlink/nl80211/__init__.py

[svinota]

Added support for NL80211_ATTR_SURVEY_INFO. A kind of: 96d12c6

Code:

import pprint
import pr2modules
from pyroute2 import IPRoute
from pyroute2 import IW

ifname = "wlp1s0"

iw = IW()

ip = IPRoute()
ifindex = ip.link_lookup(ifname=ifname)[0]
ip.close()

msg = pr2modules.netlink.nl80211.nl80211cmd()
msg['cmd'] = pr2modules.netlink.nl80211.NL80211_NAMES['NL80211_CMD_GET_SURVEY']
msg['attrs'] = [['NL80211_ATTR_IFINDEX', ifindex]]

flags = pr2modules.netlink.NLM_F_REQUEST | pr2modules.netlink.NLM_F_DUMP
result = iw.nlm_request(msg, msg_type=iw.prid, msg_flags=flags)

pp = pprint.PrettyPrinter(indent=4)
pp.pprint(result)

Output

(   {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2412), ('NL80211_SURVEY_INFO_NOISE', 151), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 9)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2417), ('NL80211_SURVEY_INFO_NOISE', 151), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2422), ('NL80211_SURVEY_INFO_NOISE', 150), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 9)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2427), ('NL80211_SURVEY_INFO_NOISE', 150), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 6)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2432), ('NL80211_SURVEY_INFO_NOISE', 202), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 35)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2437), ('NL80211_SURVEY_INFO_NOISE', 151), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 7)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2442), ('NL80211_SURVEY_INFO_NOISE', 150), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 8)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2447), ('NL80211_SURVEY_INFO_NOISE', 150), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 5)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2452), ('NL80211_SURVEY_INFO_NOISE', 202), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 30)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2457), ('NL80211_SURVEY_INFO_NOISE', 150), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 3)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 2462), ('NL80211_SURVEY_INFO_NOISE', 148), ('NL80211_SURVEY_INFO_TIME', 50), ('NL80211_SURVEY_INFO_TIME_BUSY', 20)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5180), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 8)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5200), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5220), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_IN_USE', True), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 7)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 76,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5240), ('NL80211_SURVEY_INFO_NOISE', 160), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 2)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5260), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5280), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5300), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5320), ('NL80211_SURVEY_INFO_NOISE', 161), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5500), ('NL80211_SURVEY_INFO_NOISE', 161), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5520), ('NL80211_SURVEY_INFO_NOISE', 213), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 81)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5540), ('NL80211_SURVEY_INFO_NOISE', 213), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 75)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5560), ('NL80211_SURVEY_INFO_NOISE', 213), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 80)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5580), ('NL80211_SURVEY_INFO_NOISE', 213), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 77)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5600), ('NL80211_SURVEY_INFO_NOISE', 161), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 34)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5620), ('NL80211_SURVEY_INFO_NOISE', 213), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 76)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5640), ('NL80211_SURVEY_INFO_NOISE', 161), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 22)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5660), ('NL80211_SURVEY_INFO_NOISE', 161), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5680), ('NL80211_SURVEY_INFO_NOISE', 160), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5700), ('NL80211_SURVEY_INFO_NOISE', 160), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5720), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5745), ('NL80211_SURVEY_INFO_NOISE', 160), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5765), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5785), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5805), ('NL80211_SURVEY_INFO_NOISE', 158), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1},
    {   'attrs': [   ('NL80211_ATTR_IFINDEX', 2),
                     ('NL80211_ATTR_SURVEY_INFO', {'attrs': [('NL80211_SURVEY_INFO_FREQUENCY', 5825), ('NL80211_SURVEY_INFO_NOISE', 159), ('NL80211_SURVEY_INFO_TIME', 150), ('NL80211_SURVEY_INFO_TIME_BUSY', 0)]})],
        'cmd': 51,
        'event': 'NL80211_CMD_NEW_SURVEY_RESULTS',
        'header': {   'error': None,
                      'flags': 2,
                      'length': 72,
                      'pid': 90318,
                      'sequence_number': 255,
                      'stats': Stats(qsize=0, delta=0, delay=0),
                      'target': 'localhost',
                      'type': 31},
        'reserved': 0,
        'version': 1})

To get nested NLA values, you can use get_nested():

for rmsg in result:
    print(rmsg.get_nested('NL80211_ATTR_SURVEY_INFO', 'NL80211_SURVEY_INFO_FREQUENCY'))

UPD1: The survey command will be provided by IW asap.
UPD2: IW class updated: 29e15d8

[frainz-de]

Wow, thank you so much.
Before you added the survey functionality to the library, I tried to parse the NLAs myself and somewhat succeeded, but what I didn't understand was how to get the actual meaning of the NLAs. The type field seems to only show the basic data type.
But that's only out of interest, I can now do what I wanted.