| Commit message (Collapse) | Author | Age | Files | Lines |
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Since aggregation is usually triggered by tx completion, a hardware
reset (because of beacon stuck, tx hang or baseband hang) can
significantly delay the transmission of the next AMPDU (until the next
tx completion event).
Fix this by rescheduling aggregation after such a reset.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The ath9k aggregation code was already checking the rate control probe flag
to prevent starting an aggregate frame with a sampling rate. What was missing
was closing an aggregate before adding a probing frame to it.
Without that, rate control cannot have precise control over probing, which
delays using faster rates when the channel conditions improve.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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If ah->curchan is uninitialized, the channel index is bogus, which leads
to invalid memory access when the cycle counters are updated.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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We are not handling all divide by zero cases in paprd.
Add additional checks for divide by zero cases in papard.
This patch has fixes intended for kernel 2.6.36.
Cc: stable@kernel.org
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This updates the initvals for the AR9003 2.2 chipsets. The initvals
are the initial register values we use for our registers upon hardware
reset. This synchs up the initvals to match what our latest recommendation
from our systems engineering team.
The description of changes in this update:
Improves ability to support very strong Rx conditions.
Enhances DFS support for AP-mode.
Improves performance of Tx carrier leak calibration.
Adds support for Japan channel 14 Tx filtering requirements.
Improves Tx power accuracy.
Impact:
Update required to address degraded throughput at very short range.
Update required for AP-mode DFS certification.
Update required to comply to IEEE Tx carrier leak specification.
May not meet expected +/- 2 dB Tx power accuracy without update.
The most important fix here would be the TX carrier leakage required
to comply with IEEE 802.11 specifications. The group of changes have
been tested all together in one release.
References:
Osprey 2.2 header file ver #33
Checksums:
$ ./initvals -f ar9003-2p2
0x000000004a488fc7 ar9300_2p2_radio_postamble
0x0000000046cb1300 ar9300Modes_lowest_ob_db_tx_gain_table_2p2
0x00000000e912711f ar9300Modes_fast_clock_2p2
0x0000000037ac0ee8 ar9300_2p2_radio_core
0x00000000047a7700 ar9300Common_rx_gain_table_merlin_2p2
0x0000000003f783bb ar9300_2p2_mac_postamble
0x00000000301fc841 ar9300_2p2_soc_postamble
0x000000005ec8075f ar9200_merlin_2p2_radio_core
0x0000000083372ffa ar9300_2p2_baseband_postamble
0x00000000c4f59974 ar9300_2p2_baseband_core
0x00000000e20d2e72 ar9300Modes_high_power_tx_gain_table_2p2
0x000000007fd55c70 ar9300Modes_high_ob_db_tx_gain_table_2p2
0x0000000029495000 ar9300Common_rx_gain_table_2p2
0x0000000042cb1300 ar9300Modes_low_ob_db_tx_gain_table_2p2
0x00000000c4739cd6 ar9300_2p2_mac_core
0x000000003521a300 ar9300Common_wo_xlna_rx_gain_table_2p2
0x00000000a15ccf1b ar9300_2p2_soc_preamble
0x0000000029734396 ar9300PciePhy_pll_on_clkreq_disable_L1_2p2
0x000000002d834396 ar9300PciePhy_clkreq_enable_L1_2p2
0x0000000029834396 ar9300PciePhy_clkreq_disable_L1_2p2
$ ./initvals -f ar9003-2p2 | sha1sum
0ceddb5cf66737610fb51f04cf3e9ff71870c7b4 -
Cc: stable@kernel.org
Cc: Yixiang Li <yixiang.li@atheros.com>
Cc: Don Breslin <don.breslin@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Otherwise, lockdep splats, at the least:
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Pid: 2240, comm: ip Not tainted 2.6.36-rc8-wl+ #32
Call Trace:
[<c075d940>] ? printk+0xf/0x17
[<c045507a>] register_lock_class+0x5a/0x29e
[<c0455be2>] ? mark_lock+0x1e/0x1de
[<c0456af5>] __lock_acquire+0xa2/0xb8c
[<c0455be2>] ? mark_lock+0x1e/0x1de
[<c0457639>] lock_acquire+0x5a/0x78
[<f8c5115b>] ? ath9k_config+0x274/0x3d8 [ath9k]
[<c075f602>] _raw_spin_lock_irqsave+0x2f/0x3f
[<f8c5115b>] ? ath9k_config+0x274/0x3d8 [ath9k]
[<f8c5115b>] ath9k_config+0x274/0x3d8 [ath9k]
[<f8c0ba2e>] ieee80211_hw_config+0x11b/0x125 [mac80211]
[<f8c17edf>] ieee80211_do_open+0x3c5/0x466 [mac80211]
[<f8c171d6>] ? ieee80211_check_concurrent_iface+0x21/0x13a [mac80211]
[<f8c17fdb>] ieee80211_open+0x5b/0x5e [mac80211]
[<c06ce76b>] __dev_open+0x80/0xae
[<c06cc99b>] __dev_change_flags+0xa0/0x115
[<c06ce6bf>] dev_change_flags+0x13/0x3f
[<c06d7e78>] do_setlink+0x23a/0x51b
[<c0455037>] ? register_lock_class+0x17/0x29e
[<c06d847c>] rtnl_newlink+0x269/0x431
[<c06d8291>] ? rtnl_newlink+0x7e/0x431
[<c0455be2>] ? mark_lock+0x1e/0x1de
[<c0455de9>] ? mark_held_locks+0x47/0x5f
[<c075ebcf>] ? __mutex_lock_common+0x2bb/0x2d6
[<c0456045>] ? trace_hardirqs_on_caller+0x104/0x125
[<c075ebe0>] ? __mutex_lock_common+0x2cc/0x2d6
[<c06d8213>] ? rtnl_newlink+0x0/0x431
[<c06d79e2>] rtnetlink_rcv_msg+0x182/0x198
[<c06d7860>] ? rtnetlink_rcv_msg+0x0/0x198
[<c06e503c>] netlink_rcv_skb+0x30/0x77
[<c06d7859>] rtnetlink_rcv+0x1b/0x22
[<c06e4e77>] netlink_unicast+0xbe/0x119
[<c06e5a15>] netlink_sendmsg+0x234/0x24c
[<c06bf93a>] __sock_sendmsg+0x51/0x5a
[<c06bfba4>] sock_sendmsg+0x93/0xa7
[<c04968cf>] ? might_fault+0x47/0x81
[<c0496904>] ? might_fault+0x7c/0x81
[<c06c7904>] ? copy_from_user+0x8/0xa
[<c06c7c2d>] ? verify_iovec+0x3e/0x6d
[<c06bfd8c>] sys_sendmsg+0x149/0x193
[<c0455037>] ? register_lock_class+0x17/0x29e
[<c0455be2>] ? mark_lock+0x1e/0x1de
[<c0498d7a>] ? __do_fault+0x1fc/0x3a5
[<c048690a>] ? unlock_page+0x40/0x43
[<c0498ef7>] ? __do_fault+0x379/0x3a5
[<c04576dd>] ? lock_release_non_nested+0x86/0x1d8
[<c04968cf>] ? might_fault+0x47/0x81
[<c04968cf>] ? might_fault+0x47/0x81
[<c06c148b>] sys_socketcall+0x15e/0x1a5
[<c0402f1c>] sysenter_do_call+0x12/0x38
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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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
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This doesn't fix any problem that I'm aware of, but should
make it harder to add use-after-free type bugs in the
future.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The bf_dmacontext seems to be totally useless and duplicated
by bf_buf_addr. Remove it entirely, use bf_buf_addr in its
place.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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These chipsets will not hit the market, all customers will be
on >= AR9003 2.2. This shaves down the ath9k_hw size by
24161 bytes (24 KB) on my system.
Before:
$ size drivers/net/wireless/ath/ath9k/ath9k_hw.ko
text data bss dec hex filename
292328 616 1824 294768 47f70 drivers/net/wireless/ath/ath9k/ath9k_hw.ko
$ du -b drivers/net/wireless/ath/ath9k/ath9k_hw.ko
5987825 drivers/net/wireless/ath/ath9k/ath9k_hw.ko
After:
$ size drivers/net/wireless/ath/ath9k/ath9k_hw.ko
text data bss dec hex filename
277192 616 1824 279632 44450 drivers/net/wireless/ath/ath9k/ath9k_hw.ko
$ du -b drivers/net/wireless/ath/ath9k/ath9k_hw.ko
5963664 drivers/net/wireless/ath/ath9k/ath9k_hw.ko
Cc: Yixiang Li <yixiang.li@atheros.com>
Cc: Don Breslin <don.breslin@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This patch enables to receive probe request frames on p2p
client mode.
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The wireless mode bitfield was only used to detect 2.4 and 5 GHz support,
which can be simplified by using ATH9K_HW_CAP_* capabilities.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Set the rate table in the rc module properly based on band and
HT capabilities instead, which was already partially done, but
not for every mode.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Move them to the same debugfs file that the other rc modules use.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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ath9k_hw_proc_mib_event updates the cycle counters, so it common->cc_lock
must be acquired.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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PHY counter overflows need to be checked for the old ANI version,
because of its use of interrupt based counter overflow reports when
the counters exceed the configured thresholds.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The commit "ath9k_hw: remove code duplication in phy error counter handling"
split off some duplicate code into a separate function, but did not have a
return code for aborting ANI processing based on counter values.
This introduced a divide by zero issue.
This patch adds the missing return code check in ath9k_hw_ani_monitor
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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While the chip is in powersave mode, the cycle counter updates do not
contain useful values. While the chip is in full sleep, the rx_clear
signal stays high, indicating a busy medium.
To ensure sane values, update cycle counters before going into
powersave, and clear them right after switching back to awake.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The ath_debug_stat_tx references bf->bf_mpdu, which
is the skb consumed by ath_tx_complete. So, call
the ath_debug_stat_tx method first.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This allows mac80211 to enable receiving of Probe Request frames in
station mode which is needed for P2P.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This fix updates the documenation in Rate Control Table structure
Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This patch attempts to ensure that ath9k's built-in rate control algorithm
does not rely on the value of the ampdu_len and ampdu_ack_len tx status
fields unless the IEEE80211_TX_STAT_AMPDU flag is set.
This patch has not been tested.
Cc: <stable@kernel.org>
Signed-off-by: Björn Smedman <bjorn.smedman@venatech.se>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This patch fixes the following problems with the rate control feedback
generated by ath9k for A-MPDU frames:
1. Rate control feedback is carried on the first frame of an aggregate
that is either ACKed, or has execeeded the software retry count and is
considered failed. However, ath9k would incorrectly assume the aggregate
had the length 1 if one of these conditions did not apply to the first
frame of the aggregate, but instead a later frame. This fix therefor
copies the bf_nframes field of the buffer in the same manner as the rates
field of the tx status.
2. Sometimes the ampdu_len and ampdu_ack_len fields of the tx status was
left uninitialized eventhough the IEEE80211_TX_STAT_AMPDU flag was set.
This is now avoid by setting flag and fields in the same place.
3. Even if a frame has been selected for aggregation by mac80211 and
marked with the IEEE80211_TX_CTL_AMPDU flag it can sometimes happen that
ath9k transmits the frame without aggregation. In these cases the
ampdu_ack_len field could be incorrectly computed because the nbad
parameter to ath_tx_rc_status was incorrect.
Cc: <stable@kernel.org>
Signed-off-by: Björn Smedman <bjorn.smedman@venatech.se>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Results for the active channel are updated whenever a new survey dump
is requested, the old data is kept to allow multiple processes to
make their own channel utilization averages.
All other channels only contain the data for the last time that the
hardware was on the channel, i.e. the last scan result or other
off-channel activity.
Running a background scan does not clear the data for the active
channel.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This prevents random memory corruption if the number of channels ever gets
changed without an update to the internal channel array size.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Instead of keeping track of wraparound, clear the counters on every
access and keep separate deltas for ANI and later survey use.
Also moves the function for calculating the 'listen time' for ANI
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The following commit removed DISABLE_REGWRITE_BUFFER ops. The unnecessary
REGWRITE_BUFFER_FLUSH was not removed properly which is causing failure on
hw reset.
Author: Felix Fietkau <nbd@openwrt.org>
Date: Tue Oct 5 12:03:42 2010 +0200
ath9k_hw: clean up register write buffering
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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drv_config callback is called only after the ack for the nullframe
is received and so driver need not do anything special for this.
So remove NULLFUNC_COMPLETED, PS_ENABLED flags and bf_isnullfunc
flags from ath9k as mac80211 already handles them properly.
Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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After the last rounds of cleanup, these functions are now functionally
equivalent and can thus be merged.
Also get rid of some excessive (and redundant) debug messages.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The code gets more concise and readable when making the new ANI functions
fall back to the old ones if ANI v2 is disabled. This also makes further code
cleanup easier.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Split out the PHY error counter update from ath9k_hw_ani_monitor_*, reuse
it in ath9k_hw_proc_mib_event (merged from ath9k_hw_proc_mib_event_old
and ath9k_hw_proc_mib_event_new).
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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ANI state is kept per channel, so instead of keeping an array of ANI states
with an arbitrary size of 255, move the ANI state into the channel struct.
Move some config settings that are not per-channel out of
the per-channel struct to save some memory.
With those changes, ath9k_ani_restart_old and ath9k_ani_restart_new can
be merged into a single function.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Throughout the code, DISABLE_REGWRITE_BUFFER is always called right after
REGWRITE_BUFFER_FLUSH. Since that's unlikely to change any time soon, that
makes keeping those ops separate rather pointless, as it only increases
code size and line number counts.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The cycle counters are used by ANI to determine the amount of time that the
radio spent not receiving or transmitting. They're also used for debugging
purposes if the baseband watchdog on AR9003 detects a lockup.
In the future, we want to use these counters to determine the medium utilization
and export this information via survey. For that, we need to make sure that
the counter is only accessed from one place, which also ensures that
wraparounds won't occur at inconvenient points in time.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The calibration actual calibration flags are only used by the per chip family
source files, so it makes more sense to define them in those files instead
of globally. That way the code has to test for less flags.
Also instead of using a separate callback for testing whether a particular
calibration type is supported, simply adjust ah->supp_cals in the calibration
init which is called right after the hardware reset, before any of the
calibrations are run.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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The base_eep_header_4k structure contains information that the
device supports high power tx gain table or not. However the
ath9k_hw_4k_get_eeprom function does not return that value when
it is called with EEP_TXGAIN_TYPE. This leads to that the tx gain
initialization will use the init values from the original tx gain
table even if the device inidicates that the high power table
should be used.
Changes-licensed-under: ISC
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Shu Hwa Shen <shensh@zcomm.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Includes pkts/bytes that may have had errors, and includes
wireless headers when counting bytes.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Enable WDS for the ath9k driver.
Signed-off-by: Bill Jordan <bjordan@rajant.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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In the ath9k debugging feature 'wiphy' the current channel used by the
station is incorrectly displayed.This is because the channels available
are sequentially mapped from numbers 0 to 37.This mapping cannot be
changed as the channel number is also used as an array index
This fix solves the above problem by calculating the channel
number from center frequency.
Signed-off-by: Mohammed Shafi Shajakhan <mshajakhan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The percal struct and bitmask for the initial DC calibration are not
used anywhere, so they can be removed.
Signed-off-by: Felix Fietkau <nbd@openwrt.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Since the regulatory code touches the channel array, it needs to be
copied for each device instance. That way the original channel array
can also be made const.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Cc: stable@kernel.org [all]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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common->ani.noise_floor is now only used for a similar redundant debug
message similar to the one that was removed from ath9k_htc in an earlier
patch. Remove it from ath9k as well now.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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It is unused aside from a single redundant debug message
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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