The BIT macro uses unsigned long which some architectures handle as 32 bit
and therefore might cause macro's shift to overflow when used on a value
equals or larger than 32 (NL80211_STA_INFO_RX_DURATION and afterwards).
Since 'filled' member in station_info changed to u64, BIT_ULL macro
should be used with all NL80211_STA_INFO_* attribute types instead of BIT
to prevent future possible bugs when one will use BIT macro for higher
attributes by mistake.
This commit cleans up all usages of BIT macro with the above field
in mac80211 by changing it to BIT_ULL instead.
Signed-off-by: Omer Efrat <omer.efrat@tandemg.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This fixes memory leaks in the case where we just have the
station info on the stack for internal usage without sending
it to cfg80211.
Fixes: 8689c051a2 ("cfg80211: dynamically allocate per-tid stats for station info")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Arend's previous patch made the sinfo structure smaller
again by to dynamically allocating the per-tid stats
only when needed. Thus, revert to stack allocation for
the struct to simplify the code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The multiplication of 100000 * cfg80211_calculate_bitrate() is a 32 bit
operation and can overflow if cfg80211_calculate_bitrate is greater
than 42949. Although I don't believe this is occurring at present, it
would be safer to avoid the potential overflow by making the constant
100000 an ULL to ensure a 64 multiplication occurs.
Detected by CoverityScan, CID#1468643 ("Unintentional integer overflow")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This adds support for exporting the mac80211 TXQ stats via nl80211 by
way of a nested TXQ stats attribute, as well as for configuring the
quantum and limits that were previously only changeable through debugfs.
This commit adds just the nl80211 API, a subsequent commit adds support to
mac80211 itself.
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Rather than just setting the valid flags to 0 set the
whole struct to 0 since other places might rely on it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Group station statistics by where they're (mostly) updated
(TX, RX and TX-status) and group them into sub-structs of
the struct sta_info.
Also rename the variables since the grouping now makes it
obvious where they belong.
This makes it easier to identify where the statistics are
updated in the code, and thus easier to think about them.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
There's little point in keeping (and even sending to userspace)
the beacon_loss_count value per station, since it can only apply
to the AP on a managed-mode connection. Move the value to ifmgd,
advertise it only in managed mode, and remove it from ethtool as
it's available through better interfaces.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This counter is unsafe with concurrent TX and is only exposed
through debugfs and ethtool. Instead of trying to fix it just
remove it for now, if it's really needed then it should be
exposed through nl80211 and in a way that drivers that do the
fragmentation in the device could support it as well.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This is really just duplicating the list of information that's
already available in the nl80211 attribute, so remove the list.
Two small changes are needed:
* remove STATION_INFO_ASSOC_REQ_IES complete, but the length
(assoc_req_ies_len) can be used instead
* add NL80211_STA_INFO_RX_DROP_MISC which exists internally
but not in nl80211 yet
This gets rid of the duplicate maintenance of the two lists.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
All of the survey data is (currently) per channel anyway,
so having the word "channel" in the name does nothing. In
the next patch I'll introduce global data to the survey,
where the word "channel" is actually confusing.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently, cfg80211 tries to implement ethtool, but that doesn't
really scale well, with all the different operations. Make the
lower-level driver responsible for it, which currently only has
an effect on mac80211. It will similarly not scale well at that
level though, since mac80211 also has many drivers.
To cleanly implement this in mac80211, introduce a new file and
move some code to appropriate places.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Omer Efrat
Johannes Berg
Colin Ian King
Toke Høiland-Jørgensen