To make the tcp connections keepalive and better handle the timeout
of connections
con_timeout indicate the connection timeout and it is configurable
Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
Somtimes client connetions will not close therfore add a timeout. Add a
new timer that checks every 5s if we did not receive anything from a
client for (default) 60s. Can be configured via client_timeout.
Code is based on the work of ptpt52.
Signed-off-by: Nick Hainke <vincent@systemli.org>
Updated approach to sending BEACON REQUEST. Each AP asks every 802.11k
enabled client for the BEACON REPORT of a single other AP in the network
at N second intervals, where N is the refresh period / num-APs. N seconds
later the request is sent for the next AP.
[cleanup commit message]
Signed-off-by: Nick Hainke <vincent@systemli.org>
- Tweak disassociate / kick NR code to reduce build overhead
- Add set_hostapd_nrdynamic == 2 to build of AP local station NR from what current clients hear elsewhere
- Tighten up hex string length usage for strncpy(), etc
[cleanup commit message]
Signed-off-by: Nick Hainke <vincent@systemli.org>
- New skipping linked list structure - possible bug in previous version
- Adjust some function names to better reflect what actually happens
- Remove redundant configurable sort elements
- Remove probe structure SSID field which is not set via BEACON, so is unreliable
- Adjust way the different fields from BEACON and PROBE reports are handled / merged
- Made client / BSSID paramater order consistent for probe / beacon functions to help avoid cut/ paste bugs
- Add RRM capability, RCPI and RSNI to client in hearing map (which is a summary of probe / beacon entries)
[cleanup commit message]
Signed-off-by: Nick Hainke <vincent@systemli.org>
General revisions to maintain code (no functional changes intended).
Removed unnecessary linked-list length checks.
Fixed some typos on function names / comments.
Changed how test_storage forces SEGV due to new compiler warnings.
Signed-off-by: Ian Clowes <clowes_ian@hotmail.com>
Set pointers to NULL after free() to help force out memory handling errors.
Add some extra memory / resource tracking to try and chase out latent
bugs / leaks Fixed a couple of memory traces that were misreporting.
Signed-off-by: Ian Clowes <clowes_ian@hotmail.com>
Provide multi-priority syslog() based logging to improve user and
developer experience. Add dawnlog_* functions and macros to convert
printf() family and perror() logging to syslog() family. Removed
unnecessary sprintf() for building log strings (embed format directly).
Add local config settings for log level. Add command line parameters for
log level and destination. Set default log level to suppress a lot of
previously noisy messages. Restore some previously removed noisy
messages as DEBUG level in case they help in future. Eliminate DAWN_NO_OUTPUT static code checks which are no longer used.
Signed-off-by: Ian Clowes <clowes_ian@hotmail.com>
This adds a few options to use the signal strength as a metric, band
dependent:
- rssi_weight: every db of signal increases the score by this much.
- rssi_center: if the signal is stronger than this, the score becomes
positive; below this, it is negative.
- initial_score: since we are capping negative scores, it may be
beneficial to have a positive base score to offset a possible
negative signal value. This is replacing the 'freq' metric.
To avoid a single-digit RSSI increase resulting in a kick, we add a
global threshold value to act as a buffer:
- kicking_threshold: a candidate AP must have a score larger than that
of the current AP plus the value here.
The kicking_threshold also applies when assembling the list of roaming
neighbors we send with the "wnm_disassoc_imminent" command.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
This adds config options to define MACSs of neighbors to be on top of
each band's neighbor list. This is important, because some clients will
limit the number of entries they use. iOS devices, for exmample, use
only the top 6 APs.
The neighbors_11g and neighbors_11a take a list or space-separated
string of AP BSSIDs to keep at the top of each band's neighbor report.
The list is used when the neighbor report is being assembled. Any
listed AP that is not online will not be included in that report. When
the next report is assembled, if the AP is back online, then they are
restored to the indicated order.
There's only one list for each band. In case of multiple SSIDs, you can
include BSSIDs for all of them, and they will be filtered by SSID when
assembling the reports.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
This sets the default metric values to the ones currently used in the
openwrt package config file.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
This changes the metrics variables that invove scores to arrays. At the
momemnt, there are two bands implemented, 802_11a and 802_11g.
Internally, they are chosen based on the frequency of the channel being
used. Anything < 2500 MHz is 802_11g, and everything else is 802_11a.
Dawn will issue a warning if it finds a frequency greater or equal to
5925 MHz. The upper limit of the 802.11a band, and the start of the
next band vary by country, so this will have to be reviewed.
The UCI configuration changes. Instead of a single metric config, there
will be a global metric config, and one for each band. The
non-band-specific configuration will only work in the global config.
Any per-band configuration present at the global config will be applied
to all bands. Any configuration present at the specific band will
override any global values.
The following configuration options are split into bands:
- ap_weight
- ht_support
- vht_support
- no_ht_support
- no_vht_support
- rssi
- rssi_val
- low_rssi
- low_rssi_val
- freq
- chan_util
- max_chan_util
- chan_util_val
- max_chan_util_val
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
This changes the op_class, channel, and SSID fields used to send a
beacon request. Op_class and channel were set from the UCI config file,
but they are dependent on the band being used--they define the frequency
used. The values can be taken from the AP's own neighbor report.
The SSID was set with a blank string, which would return beacons from
any SSID. Since we only care about our own SSID, there's no need to
waste resorces with reports from other SSIDs.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
This renames "mode" to "rrm_mode", and its type from int to string.
This way, we can set the correct mode for a probe request from the STA
reported capabilities, along with the preferred order of modes, set by
the "rrm_mode" uci config.
rrm_mode is a string of possible mode letters:
'p' = passive report
'a' = active report
'b' or 't' = beacon table report.
Setting rrm_mode='pat', will try to send passive reports, if available;
if not, it will try an active report, using a beacon table if all else
fails.
If you don't include a letter, the corresponding report type will be
disabled. An empty string will disable beacon reports. Unrecognized
letters are ignored, as well as repeated modes. If the configuration is
not present, a default value of 'pat' will be used.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
A new config option allows to add a server ip
option server_ip '10.0.0.2'
However, this server does not send anything back. Therefore it is not
possible to change the node configuration. This will probably be added
soon. The main goal of this commit is to allow monitoring of all nodes
in a network with DAWN, e.g. clients, channel utilization, ...
Also a network option (3) has been added which allows to use TCP but
not to announce your daemon in the broadcast domain. This allows you to
create a monitor-only node that holds only the local information and
forwards it to the central server.
A monitor-only node could be configured like
option server_ip '10.0.0.1'
option tcp_port '1026'
option network_option '3'
Another possible config is
option server_ip '10.0.0.1'
option tcp_port '1026'
option network_option '3'
Here, the node shares information with a central server, which can be
located outside the broadcast domain. Nevertheless, it also shares
information within its broadcast domain and can therefore perform
client steering.
general: fixed whitespace and typos
memory audit: on by default in build
memory audit: enhanced audit info
ubus: refactor denied_req expiry to assist datastorage testing
datastorage: fixed performance bug in handling of linked list entry expiry
datastorage: fixed SEGV in skip list handling
test_storage: added linked list memory allocation stress tests
memory auditing: refined auditing code and use in main code
hearing map: fixed bug causing it not be be built correctly
datastorage: fixed memory leak from linked list handling
datastorage (bug fix): deleting expired array item would fail to test next item
test_storage: extended to cover all required datastorage entry points
test_storage: added ability to read script file
test_storage: added new and revised test scripts
TESTING.md: added to describe testing approach
general: added various TODO notes on things to come back to
general: revised #includes to make each "self-compiling"
general: revised #includes to minimise usage across source files
general: moved declarations and defintions to simplify and rationalise code
datastorage: refactor to support scalability testing
datastorage: made independent of time() calls to support testing
datastorage: fixed redundant use of both SORT_NUM and SORT_LENGTH defines
datastorage: fake kicking to test clients move between access points
msghandler: new module to reduce compile time interdependencies
mshhandler: (issue #100?) fixed SEGV memcpy() in dump_client() using strncpy()
ubus: merged uface into ubus
mac_utils: new module for MAC address utilites
test_header: added target to help #include rationalisation
Tested-by: Nick Hainke <vincent@systemli.org>
