29 Nov, 2011
1 commit
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…wireless-next into for-davem
22 Nov, 2011
2 commits
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WLAN_STA_ASSOC_AP indicates that the station entry
is for an AP we're associated to but isn't used so
remove it.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
It was flipped. See section 7.3.2.56 of the 802.11n
spec for details.Signed-off-by: Ben Greear
Acked-by: Johannes Berg
Signed-off-by: John W. Linville
01 Oct, 2011
3 commits
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My work and some previous work didn't add
all the flags, add them now and while at it
simplify the code.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
The flaglock in struct sta_info has long been
something that I wanted to get rid of, this
finally does the conversion to atomic bitops.The conversion itself is straight-forward in
most places, a few things needed to change a
bit since we can no longer use multiple bits
at the same time.On x86-64, this is a fairly significant code
size reduction:
text data bss dec hex
427861 23648 1008 452517 6e7a5 before
425383 23648 976 450007 6ddd7 afterSigned-off-by: Johannes Berg
Signed-off-by: John W. Linville -
For uAPSD support we'll need to have per-AC PS
buffers. As this is a major undertaking, split
the buffers before really adding support for
uAPSD. This already makes some reference to the
uapsd_queues variable, but for now that will
never be non-zero.Since book-keeping is complicated, also change
the logic for keeping a maximum of frames only
and allow 64 frames per AC (up from 128 for a
station).Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
20 Apr, 2011
1 commit
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Fix printf() format warning (tm_year is long int):
net/mac80211/debugfs_sta.c:113: warning: format '%d' expects type 'int', but argument 4 has type 'long int'
Signed-off-by: Randy Dunlap
Signed-off-by: John W. Linville
13 Apr, 2011
1 commit
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Add station connected time in debugfs. This will be helpful to get a
measure of stability of the connection and for debugging stress issuesCc: Senthilkumar Balasubramanian
Signed-off-by: Mohammed Shafi Shajakhan
Signed-off-by: John W. Linville
16 Dec, 2010
1 commit
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Allow drivers or rate control algorithms to specify BlockAck session
timeout when initiating an ADDBA transaction. This is useful in cases
where maintaining persistent BA sessions does not incur any overhead.The current timeout value of 5000 TUs is retained for all non ath9k/ath9k_htc
drivers.Signed-off-by: Sujith Manoharan
Reviewed-by: Johannes Berg
Signed-off-by: John W. Linville
30 Nov, 2010
1 commit
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The RX aggregation locking documentation was
wrong, which led Christian to also code the
timer timeout handling for it somewhat wrongly.Fix the documentation, the two places that
need to hold the reorder lock across accesses
to the structure, and the debugfs code that
should just use RCU.Also, remove acquiring the sta->lock across
reorder timeouts since it isn't necessary, and
change a few places to GFP_KERNEL because the
code path here doesn't need atomic allocations
as I noticed when reviewing all this.Signed-off-by: Johannes Berg
Acked-by: Christian Lamparter
Signed-off-by: John W. Linville
16 Nov, 2010
1 commit
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refactor mac80211 debugfs code by using a format© function, instead of
duplicating the code for each generated function.this change reduces about 600B from mac80211.ko
Signed-off-by: Eliad Peller
Signed-off-by: John W. Linville
24 Oct, 2010
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1699 commits)
bnx2/bnx2x: Unsupported Ethtool operations should return -EINVAL.
vlan: Calling vlan_hwaccel_do_receive() is always valid.
tproxy: use the interface primary IP address as a default value for --on-ip
tproxy: added IPv6 support to the socket match
cxgb3: function namespace cleanup
tproxy: added IPv6 support to the TPROXY target
tproxy: added IPv6 socket lookup function to nf_tproxy_core
be2net: Changes to use only priority codes allowed by f/w
tproxy: allow non-local binds of IPv6 sockets if IP_TRANSPARENT is enabled
tproxy: added tproxy sockopt interface in the IPV6 layer
tproxy: added udp6_lib_lookup function
tproxy: added const specifiers to udp lookup functions
tproxy: split off ipv6 defragmentation to a separate module
l2tp: small cleanup
nf_nat: restrict ICMP translation for embedded header
can: mcp251x: fix generation of error frames
can: mcp251x: fix endless loop in interrupt handler if CANINTF_MERRF is set
can-raw: add msg_flags to distinguish local traffic
9p: client code cleanup
rds: make local functions/variables static
...Fix up conflicts in net/core/dev.c, drivers/net/pcmcia/smc91c92_cs.c and
drivers/net/wireless/ath/ath9k/debug.c as per David
07 Oct, 2010
1 commit
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When roaming while we have active BA session,
we can end up transmitting delBA frames to
the old AP while we're already on the new AP's
channel, which can cause warnings.Simply avoid sending those frames, but still
tear down the internal session state, since
they are not really necessary anyway as we
will implicitly disassociate when sending the
association to the new AP.Signed-off-by: Johannes Berg
Acked-by: Luis R. Rodriguez
Signed-off-by: John W. Linville
28 Sep, 2010
1 commit
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Create 'stations' sub-directory under each netdev:[vif-name]
directory to hold all stations for that network device.Signed-off-by: Ben Greear
Acked-by: Johannes Berg
Signed-off-by: John W. Linville
16 Sep, 2010
1 commit
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The default llseek operation is changing from
default_llseek to no_llseek, so all code relying on
the current behaviour needs to make that explicit.The wireless driver infrastructure and some of the drivers
make use of generated debugfs files, so they cannot
be converted by our script that automatically determines
the right operation.All these files use debugfs and they typically rely
on simple_read_from_buffer, so the best llseek operation
here is generic_file_llseek.Signed-off-by: Arnd Bergmann
Cc: "John W. Linville"
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
15 Jun, 2010
3 commits
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When the driver or rate control requests starting
or stopping an aggregation session, that currently
causes a direct callback into the driver, which
could potentially cause locking problems. Also,
the functions need to be callable from contexts
that cannot sleep, and thus will interfere with
making the ampdu_action callback sleeping.To address these issues, add a new work item for
each station that will process any start or stop
requests out of line.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
Currently we allocate some memory for each TX
aggregation session and additionally keep a
state bitmap indicating the state it is in.
By using RCU to protect the pointer, moving
the state into the structure and some locking
trickery we can avoid locking when the TX agg
session is fully operational.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
Currently we allocate some memory for each RX
aggregation session and additionally keep a
flag indicating whether or not it is valid.
By using RCU to protect the pointer and making
sure that the memory is fully set up before it
becomes visible to the RX path, we can remove
the need for the bool that indicates validity,
as well as for locking on the RX path since it
is always synchronised against itself, and we
can guarantee that all other modifications are
done when the structure is not visible to the
RX path.The net result is that since we remove locking
requirements from the RX path, we can in the
future use any kind of lock for the setup and
teardown code paths.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
04 Jun, 2010
2 commits
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This patch reduces the binary size by around 25k (measured on MIPS,
with CONFIG_MAC80211_DEBUG_COUNTERS enabled).Signed-off-by: Felix Fietkau
Signed-off-by: John W. Linville -
There's no sense in letting anything but internal
mac80211 functions set the initiator to anything
but WLAN_BACK_INITIATOR, since WLAN_BACK_RECIPIENT
is only valid when we have received a frame from
the peer, which we react to directly in mac80211.The debugfs code I recently added got this wrong
as well.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
04 May, 2010
1 commit
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This allows enabling TX and disabling both TX and
RX aggregation sessions manually in debugfs. It is
very useful for debugging session initiation and
teardown problems since with this you don't have
to force a lot of traffic to get aggregation and
thus have less data to analyse.Also, to debug mac80211 code itself, make hwsim
"support" aggregation sessions. It will still just
transfer the frame, but go through the setup and
teardown handshakes.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
10 Apr, 2010
1 commit
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Signed-off-by: Luis R. Rodriguez
Signed-off-by: John W. Linville
08 Apr, 2010
1 commit
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The aggregation code has a number of quirks, like
inventing an unneeded WLAN_BACK_TIMER value and
leaking memory under certain circumstances during
station destruction. Fix these issues by using
the regular aggregation session teardown code and
blocking new aggregation sessions, all before the
station is really destructed.As a side effect, this gets rid of the long code
block to destroy aggregation safely.Additionally, rename tid_state_rx which can only
have the values IDLE and OPERATIONAL to
tid_active_rx to make it easier to understand
that there is no bitwise stuff going on on the
RX side -- the TX side remains because it needs
to keep track of the driver and peer states.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
10 Mar, 2010
1 commit
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The noise value as is won't be used, isn't
filled by most drivers and doesn't really
make a whole lot of sense on a per packet
basis -- proper cfg80211 survey support in
mac80211 will need to be different.Mark the struct member as deprecated so it
will be removed from drivers.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
02 Feb, 2010
2 commits
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Use a more compact and readable format for "agg_status" to reduce the
stack frame to less than 1024 bytes.Signed-off-by: Pavel Roskin
Signed-off-by: John W. Linville -
The maximal size of the "ht_capa" file is 430 bytes. In most cases,
it's much shorter. Use a 512 byte long buffer. 1024 bytes is too much
and causes a warning with CONFIG_FRAME_WARN=1024.Signed-off-by: Pavel Roskin
Signed-off-by: John W. Linville
23 Dec, 2009
3 commits
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IEEE-802.11n spec says the RX highest data rate field does
not specify the highest supported RX data rate if its not set.
Ignore it if not set then. Refer to section 7.3.56.4Cc: johannes@sipsolutions.net
Signed-off-by: Luis R. Rodriguez
Signed-off-by: John W. Linville -
When debugging you want to be lazy and not have to parse
bits yourself so let mac80211 debugfs do the parsing for you.This is what I get against my WRT610N:
root@tux:~# cat /sys/kernel/debug/ieee80211/phy0/stations/00\:22\:6b\:aa\:bb\:01/ht_capa
ht supported
cap: 0x000e
HT20/HT40
SM Power Save disabled
No RX STBC
Max AMSDU length: 7935 bytes
No DSSS/CCK HT40
ampdu factor/density: 2/6
MCS mask: ff ff 00 00 00 00 00 00 00 00
MCS rx highest: 0
MCS tx params: 0Cc: johannes@sipsolutions.net
Signed-off-by: Luis R. Rodriguez
Signed-off-by: John W. Linville -
The MCS set is 16 bits so when debugging ensure the full 16 bits
are represented. Current reading would make you think its only
8 bits.Cc: johannes@sipsolutions.net
Signed-off-by: Luis R. Rodriguez
Signed-off-by: John W. Linville
22 Dec, 2009
1 commit
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For bluetooth 3, we will most likely not have
a netdev for a virtual interface (sdata), so
prepare for that by reducing the reliance on
having a netdev. This patch moves the name
and address fields into the sdata struct and
uses them from there all over. Some work is
needed to keep them sync'ed, but that's not
a lot of work and in slow paths anyway.In doing so, this also reduces the number of
pointer dereferences in many places, because
of things like sdata->dev->dev_addr becoming
sdata->vif.addr.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
20 Nov, 2009
1 commit
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This is sometimes useful to debug HT issues
as it shows what exactly the stack thinks
the peer supports.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
07 Nov, 2009
1 commit
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Some devices require that all frames to a station
are flushed when that station goes into powersave
mode before being able to send frames to that
station again when it wakes up or polls -- all in
order to avoid reordering and too many or too few
frames being sent to the station when it polls.Normally, this is the case unless the station
goes to sleep and wakes up very quickly again.
But in that case, frames for it may be pending
on the hardware queues, and thus races could
happen in the case of multiple hardware queues
used for QoS/WMM. Normally this isn't a problem,
but with the iwlwifi mechanism we need to make
sure the race doesn't happen.This makes mac80211 able to cope with the race
with driver help by a new WLAN_STA_PS_DRIVER
per-station flag that can be controlled by the
driver and tells mac80211 whether it can transmit
frames or not. This flag must be set according to
very specific rules outlined in the documentation
for the function that controls it.When we buffer new frames for the station, we
normally set the TIM bit right away, but while
the driver has blocked transmission to that sta
we need to avoid that as well since we cannot
respond to the station if it wakes up due to the
TIM bit. Once the driver unblocks, we can set
the TIM bit.Similarly, when the station just wakes up, we
need to wait until all other frames are flushed
before we can transmit frames to that station,
so the same applies here, we need to wait for
the driver to give the OK.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
31 Oct, 2009
2 commits
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This value is unused by mac80211, because it was only
be used by wireless extensions, and turned out to not
be useful there because the quality value needs to be
comparable between scan results and the current value
which is impossible when the qual value is calculated
taking into account noise, for example.Since it is unused anyway, this patch deprecates it
in the hope that drivers will remove their sometimes
quite expensive calculations of the value.I'm open to actual uses of the value, but the best
way of using it seems to be what the Intel drivers do
which should probably be generalised if we have noise
values from the hardware.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
We can save a lot of code and pointers in the structs
by using debugfs_remove_recursive().First, change cfg80211 to use debugfs_remove_recursive()
so that drivers do not need to clean up any files they
added to the per-wiphy debugfs (if and only if they are
ok to be accessed until after wiphy_unregister!).Then also make mac80211 use debugfs_remove_recursive()
where necessary -- it need not remove per-wiphy files
as cfg80211 now removes those, but netdev etc. files
still need to be handled but can now be removed without
needing struct dentry pointers to all of them.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
11 Jul, 2009
1 commit
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We had code for a number of files, that we didn't publish
in debugfs, fix that. Also make the agg_status file layout
more readable and add more information to it.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
30 Jan, 2009
1 commit
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Add flags for setting STA entries and struct ieee80211_if_sta to
indicate whether management frame protection (MFP) is used.Signed-off-by: Jouni Malinen
Acked-by: Johannes Berg
Signed-off-by: John W. Linville
01 Nov, 2008
2 commits
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Nothing very interesting, some checkpatch inspired stuff,
some other things.Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville -
This code uses static variables and thus cannot be kept.
Signed-off-by: Johannes Berg
Signed-off-by: John W. Linville
28 Oct, 2008
1 commit
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Also remove a few stray DECLARE_MAC_BUF that were no longer
used at all.Signed-off-by: Johannes Berg
Signed-off-by: David S. Miller
15 Oct, 2008
1 commit
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When debugfs_create_dir fails, sta_info_debugfs_add_work will not
terminate because it will find the same station again and again.
This is possible whenever debugfs fails for whatever reason; one
reason is a race condition in mac80211, unfortunately we cannot
do much about it, so just document it, it just means some station
may be missing from debugfs.Signed-off-by: Johannes Berg
Cc: Robin Holt
Signed-off-by: John W. Linville