| Age | Commit message (Collapse) | Author | Files | Lines |
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Fixes checkpatch warning:
CHECK: space prohibited before semicolon
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Fixes checkpatch warning:
CHECK: braces {} should be used on all arms of this statement
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Fixes checkpatch warnings:
CHECK: Blank lines aren't necessary after an open brace '{'
CHECK: Blank lines aren't necessary before a close brace '}'
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Dan found a check from ath6kl_rx() which doesn't make any sense at all:
" 1327 if (status || !(skb->data + HTC_HDR_LENGTH)) {
^^^^^^^^^^^^^^^^^^^^^^^^^^
skb->data is a pointer. This pointer math is always going to be false.
Should it be testing "packet->act_len < HTC_HDR_LENGTH" or something?"
I don't know what the check really was supposed to do, but I think Dan's guess
is right. Fix it accordingly.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Add basic tracing infrastructure support to ath6kl and which can be
enabled with CONFIG_ATH6KL_TRACING.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Endpoint ID is checked to make sure it is valid.
Signed-off-by: Pandiyarajan Pitchaimuthu <c_ppitch@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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The skb->tail pointer of rx buffers is not adjusted
after skb->data pointer is aligned to 4-byte, this
causes random rx data corruption.
Signed-off-by: Jin Navy <nhjin@qca.qualcomm.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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It's safe to check endpoint id values before it get
really used. Found this on code review.
Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Disallowing any wmi commands while re-initializing the
firmware results in connection failures after recovery
is done in open/WEP mode. To fix this, clear WMI_READY,
to make sure no wmi command is tried while fw is down.
Remove ATH6KL_STATE_RECOVERY state check in ath6kl_control_tx()
so that any configuration during fw init time will go through
using wmi commands.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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In some error conditions, fw pauses HTC pipes which would
result in control endpoint full condition. When we hit this
case, most of the time the device will be unusable. Re-initialize
the target to recover from this situation.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Re-initialize the target when fw crash is reported.
This would make the device functional again after
target crash. During the target re-initialization
it is made sure that target is not bugged with data/cmd
request, ar->state ATH6KL_STATE_RECOVERY is used
for this purpose.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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We bail out from ath6kl_tx_complete() if any of the sanity
checks on skb and ath6kl_cookie fails. By doing this we
potentially leak few remaining buffers in packet_queue.
Make sure to proceed processing the remaining buffers
as well. This issue is found during code review.
Reported-by: Wang yufeng <yufengw@qca.qualcomm.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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skb given to ath6kl_control_tx() is owned by ath6kl_control_tx().
Calling function should not free the skb for error cases.
This is found during code review.
kvalo: fix a checkpatch warning in ath6kl_wmi_cmd_send()
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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There is frequent downlink throughput drop to 0 when operating
at the signal level between -42dBm to -53dBm. This has been root
caused to the delay in releasing pending a-mpdu subframes in
reorder buffer. Right now the timeout value is 400ms, there
is also a race condition where timeout handler can be delayed
to run at an extra timeout interval. This patch reduces the
timout interval to reasonable 100ms and makes sure releasing
pending frames are not skipped in the timeout handler by removing
the flag (rxtid->progress) which can delay the timeout logic.
Reported-by: Yu Yanzhi <yanzhiy@qca.qualcomm.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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There are many places where tid data are accessed without
the lock (rxtid->lock), this can lead to a race condition
when the timeout handler for aggregatin reorder and the
receive function are getting executed at the same time.
Fix this race, but still there are races which can not
be fixed without rewriting the whole aggregation reorder
logic, for now fix the obvious ones.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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There are few cases where the tx skb is dropped but netstats is
not updated, fix this.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Use a more current logging style.
Make sure all output is prefixed appropriately.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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net_stats.multicast is updated with the count of received multicast packets.
kvalo: indentation changes
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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In preparation for adding HTC pipe implementation add htc-ops.h to make
it possible dynamically choose which HTC type is used.
Needed for full USB support.
Based on the code by Ray Chen <raychen@qca.qualcomm.com>.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Ray Chen <raychen@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Needed when using USB.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Needed by the USB code.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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This is needed by the USB code. Also while at it replace one void pointer
with a properly typed pointer.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Fix the issues which checkpatch found and were easy to fix. Especially
callers of ath6kl_bmi_write() are tricky and that needs to be fixed
separately.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Below two scenarios are taken care in this patch which helped
to fix the firmware crash during wow suspend/resume.
* TX operation (ctrl tx and data tx) has to be controlled based
on suspend state. i.e, with respect to WOW mode, control packets
are allowed to send from the host until the suspend state goes
ATH6KL_STATE_WOW and the data packets are allowed until WOW
suspend operation starts.
* Similarly, wow resume is NOT allowed if WOW suspend is in progress.
Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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When the wmi event is vif specific, the validation of vif index
is taken care in ath6kl_wmi_proc_events_iface(). This also avoids
the need for a netdev to be registered while receiving initial events
like "target_ready" and "regulatory domain".
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Tx packets will begin to drop when there are multiple traffic priorities
and the current traffic is not the highest priority and the remaining
cookies drop below a certain number, which is fixed for all AC. It is
possilbe that lower priority AC have more traffic which will consume
more cookies and lock out higher priority AC from having any. Assign
each endpoint (AC) with a different Tx-packet-drop threshold so lower
priority AC is more likely to drop packets and the cookies become more
available to higher priority AC.
Signed-off-by: Chilam Ng <chilamng@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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PS buffering of unicast Action frames that are sent in a context
of a BSS. In AP mode when the recepient station goes to powersave
and PS_POLL flag is not set, we would buffer the frames. Send out
unicast mgmt bufferred frame when PS_POLL is received.
This fixes a bug in P2P GO behavior when sending a GO Discoverability
Request to a client that is in sleep mode.
kvalo: indentation fixes
Signed-off-by: Thirumalai Pachamuthu <tpachamu@qca.qualcomm.com>
Signed-off-by: Naveen Gangadharan <ngangadh@qca.qualcomm.com>
Signed-off-by: Aarthi Thiruvengadam <athiruve@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Update license header with the copyright to Qualcomm Atheros, Inc.
for the year 2011-2012.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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"ath6kl: Define a structure for connection specific aggregation information"
introduces this. In aggr_conn_init(), vif->aggr_cntxt is assigned to
aggr_conn->aggr_info, but vif->aggr_cntxt is not initialized at this
point, this would end up accessing an invalid pointer in aggregation
receive path. Fix this by passing the correct aggr_info to aggr_conn_init().
The panic trace would look like.
[<ffffffff8159e02e>] panic+0xa1/0x1c6
[<ffffffff8103773d>] ? kmsg_dump+0xfd/0x160
[<ffffffff815a2f6a>] oops_end+0xea/0xf0
[<ffffffff8102b95d>] no_context+0x11d/0x2d0
[<ffffffff8102bc5d>] __bad_area_nosemaphore+0x14d/0x230
[<ffffffff815a5c4d>] ? do_page_fault+0x30d/0x520
[<ffffffff8102bd53>] bad_area_nosemaphore+0x13/0x20
[<ffffffff815a5cfd>] do_page_fault+0x3bd/0x520
[<ffffffff8108bd60>] ? __lock_acquire+0x320/0x1680
[<ffffffff812e3a9d>] ? trace_hardirqs_off_thunk+0x3a/0x3c
[<ffffffff815a2385>] page_fault+0x25/0x30
[<ffffffffa0487a5f>] ? aggr_slice_amsdu+0xdf/0x170 [ath6kl_core]
[<ffffffffa0487bac>] aggr_deque_frms+0xbc/0x190 [ath6kl_core]
[<ffffffffa0488404>] ath6kl_rx+0x3e4/0xae0 [ath6kl_core]
[<ffffffffa047ae77>] ath6kl_htc_rxmsg_pending_handler+0x8b7/0xf10 [ath6kl_core]
[<ffffffffa00c82f0>] ? mmc_do_release_host+0x70/0x90 [mmc_core]
[<ffffffffa00c833a>] ? mmc_release_host+0x2a/0x50 [mmc_core]
[<ffffffffa04865c0>] ? ath6kl_alloc_amsdu_rxbuf+0x140/0x140 [ath6kl_core]
[<ffffffffa0477772>] ath6kl_hif_intr_bh_handler+0x362/0x510 [ath6kl_core]
[<ffffffffa01f1000>] ath6kl_sdio_irq_handler+0x60/0xb0 [ath6kl_sdio]
[<ffffffffa00d30bc>] sdio_irq_thread+0xec/0x320 [mmc_core]
[<ffffffffa00d2fd0>] ? sdio_claim_irq+0x220/0x220 [mmc_core]
[<ffffffffa00d2fd0>] ? sdio_claim_irq+0x220/0x220 [mmc_core]
[<ffffffff8105b21e>] kthread+0xbe/0xd0
[<ffffffff815ab574>] kernel_thread_helper+0x4/0x10
[<ffffffff815a2174>] ? retint_restore_args+0x13/0x13
[<ffffffff8105b160>] ? __init_kthread_worker+0x70/0x70
[<ffffffff815ab570>] ? gs_change+0x13/0x13
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Currently rx aggregation related states are maintained per
vif, but this will not properly work when operating in AP mode.
Aggregation is completely broken when more than one
11n stations are connected to AP mode vif. Fix this issue
by keeping station specific aggregation state in sta_list.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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The tid which is given in addba/delba req event is not
just tid but also muxed with the assoc id (MSB 4 bits)
which can be used to determine the corresponding connected
station in softap mode. The actual tid is LSB 4 bits. Using
the tid as it is with rx_tid[] would result in OOB or invalid
memory access in AP mode.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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This patch just groups connection specific aggregation information
from struct aggr_info into a new structure (struct aggr_info_conn)
so that, in softAP mode, this can be used when each connected station
is made to have it's own aggregation state.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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The timer which is used to flush rx aggregation frames needs to
be disabled when resetting the aggregation state. This is found
in code review.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Before I commited patch c1762a3fe ("ath6kl: Add support for uAPSD") I
did a minor change how up variable is initialised in
ath6kl_process_uapsdq(). But I was sloppy and caused this compiler
warning:
txrx.c:88:5: warning: 'up' may be used uninitialized in this function
Revert my change to fix the warning.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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* A new APSD power save queue is added in the station structure.
* When a station has APSD capability and goes to power save, the frame
designated to the station will be buffered in APSD queue.
* When the host receives a frame which the firmware marked as trigger,
host delivers the buffered frame from the APSD power save queue.
Number of frames to deliver is decided by MAX SP length.
* When a station moves from sleep to awake state, all frames buffered
in APSD power save queue are sent to the firmware.
* When a station is disconnected, all frames bufferes in APSD power save
queue are dropped.
* When the host queues the first frame to the APSD queue or removes the
last frame from the APSD queue, it is indicated to the firmware using
WMI_AP_APSD_BUFFERED_TRAFFIC_CMD.
kvalo: fix buggy handling of sks queues, made it more obvious
the user priority when wmm is disabled, remove unneed else block and
combined some variable declarations
Signed-off-by: Thirumalai Pachamuthu <tpachamu@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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The change enables offloading TCP checksum calculation to firmware.
There are still some issues with the checksum offload so better to
disable it by default until the issues are resolved.
To enable TCP checksum offload for tx and rx paths, use
the ethtool as follows:
ethtool -K <interface> tx on
ethtool -K <interface> rx on
To disable TCP checksum offload, for tx and rx paths, use
the ethtool as follows:
ethtool -K <interface> tx off
ethtool -K <interface> rx off
kvalo: indentation changes
Signed-off-by: Rishi Panjwani <rpanjwan@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Needed when detecting how many vifs firmware supports.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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"ath6kl: Maintain virtual interface in a list" mistakenly stops the
netq only when the mode is ibss. This causes packet drops in sta mode
when the available cookies (buffer abstraction in ath6kl and also used
for tx throttling) runs out for the highest priority traffic. This patch
just fixes this regression though the original code may still need fixes
which can be addressed in separate patches.
Reported-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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When buffer alignmnet is applied, the data pointer of skb taken from
cookie will no longer point to the first byte of the actual data.
But the skb->data pointer is used in ath6kl_tx_complete() to get
the index of the virtual interface which will not give the correct
interface index and sometimes may give the following WARN_ON() message.
Use packet->buf instead of skb->data to fix this.
WARNING: at drivers/net/wireless/ath/ath6kl/wmi.c:88 ath6kl_get_vif_by_index+0x5b/0x60 [ath6kl]()
Hardware name: 2842K3U
Modules linked in: ath6kl mmc_block cfg80211 binfmt_misc ppdev nfs nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel
+snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy thinkpad_acpi snd_seq_oss snd_seq_midi snd_rawmidi joydev fbcon tileblit font bitblit softcursor
+snd_seq_midi_event snd_seq snd_timer snd_seq_device i915 uvcvideo drm_kms_helper drm psmouse serio_raw snd i2c_algo_bit sdhci_pci videodev intel_agp soundcore intel_gtt jmb38x_ms
+memstick sdhci snd_page_alloc nvram lp parport agpgart video ahci r8169 mii libahci [last unloaded: ath6kl]
Pid: 15482, comm: kworker/u:1 Tainted: G W 3.1.0-rc10-wl+ #2
Call Trace:
[<c0144d72>] warn_slowpath_common+0x72/0xa0
[<fb7c94fb>] ? ath6kl_get_vif_by_index+0x5b/0x60 [ath6kl]
[<fb7c94fb>] ? ath6kl_get_vif_by_index+0x5b/0x60 [ath6kl]
[<c0144dc2>] warn_slowpath_null+0x22/0x30
[<fb7c94fb>] ath6kl_get_vif_by_index+0x5b/0x60 [ath6kl]
[<fb7c7028>] ath6kl_tx_complete+0x128/0x4d0 [ath6kl]
[<c04df920>] ? mmc_request_done+0x80/0x80
[<fb7b9e2e>] htc_tx_complete+0x5e/0x70 [ath6kl]
[<c05e4cf6>] ? _raw_spin_unlock_bh+0x16/0x20
[<fb7ce588>] ? ath6kl_sdio_scatter_req_add+0x48/0x60 [ath6kl]
[<fb7b9f42>] htc_async_tx_scat_complete+0xb2/0x120 [ath6kl]
[<fb7ce9e7>] ath6kl_sdio_scat_rw+0x87/0x370 [ath6kl]
[<c0101e12>] ? __switch_to+0xd2/0x190
[<c01397b5>] ? finish_task_switch+0x45/0xd0
[<c05e272e>] ? __schedule+0x3ae/0x8b0
[<fb7cf00a>] ath6kl_sdio_write_async_work+0x4a/0xf0 [ath6kl]
[<c015d266>] process_one_work+0x116/0x3c0
[<fb7cefc0>] ? ath6kl_sdio_read_write_sync+0xb0/0xb0 [ath6kl]
[<c015f5b0>] worker_thread+0x140/0x3b0
[<c015f470>] ? manage_workers+0x1f0/0x1f0
[<c0163424>] kthread+0x74/0x80
[<c01633b0>] ? kthread_worker_fn+0x160/0x160
[<c05ebdc6>] kernel_thread_helper+0x6/0x10
Reported-by: Aarthi Thiruvengadam <athiruve@qca.qualcomm.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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skb is dropped in ath6kl_data_tx() when the headroom in skb
is insufficient. We hit this condition for every skb in AP mode
which is used with bridge, so all tx packets are getting dropped
when tried to send traffic to wireless client from bridge. Fix
this by reallocating the headroom instead of dropping the skb
when it has lesser headroom than needed.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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The target triggers sdio data line to wake up the host when
WOW pattern matches. This causes sdio irq handler is being
executed in the host side which internally hits ath6kl's RX path.
WOW resume should happen before start processing any data from
the target. So it's required to perform WOW resume in RX path.
This area needs bit rework to avoid WOW resume in RX path,
As of now it's fine to have this model, rework will be done later.
Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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The following is the lockdep warning which detects possible
deadlock condition with the way ar->lock and ar->list_lock
are being used.
(&(&ar->lock)->rlock){+.-...}, at: [<ffffffffa0492d13>] ath6kl_indicate_tx_activity+0x83/0x110 [ath6kl]
but this lock took another, SOFTIRQ-unsafe lock in the past:
(&(&ar->list_lock)->rlock){+.+...}
and interrupts could create inverse lock ordering between them.
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&(&ar->list_lock)->rlock);
local_irq_disable();
lock(&(&ar->lock)->rlock);
lock(&(&ar->list_lock)->rlock);
<Interrupt>
lock(&(&ar->lock)->rlock);
*** DEADLOCK ***
softirqs have to be disabled when acquiring ar->list_lock to avoid
the above deadlock condition. When the above warning printed the
interface is still up and running without issue.
Reported-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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ath6kl_tx_complete() was printing an error when packet was canceled.
That causes unnecessary errors when hardware is powered off.
Also change the error to a warning and cleanup the message.
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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This patch removes all references to ar->vif and takes
vif from a list.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Use this spinlock to protect the vif's data instead of
one from ath6kl.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Interface index is passed in wmi data header as well, use it
to get the corresponding vif structure.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Use one which is available in vif structure instead.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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Interface index is passed in wmi command header from target.
Use this index to get the appropriate vif.
Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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