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path: root/drivers/net/wireless/ath/ath10k/htt_tx.c
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2014-11-26ath10k: fix offchan reliabilityMichal Kazior
New firmware revisions don't need peer creation when doing offchannel tx. Earlier revisions would queue and never release frames without a peer. This prevent new firmware revisions from stopping replenishing wmi-htc tx credits and improves reliability of offchannel tx which would sometimes silently fail. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-11-17ath10k: handle ieee80211 header and payload tracing separatelyRajkumar Manoharan
For packet log, the transmitted frame 802.11 header alone is sufficient. Recording entire packet is also consuming lot of disk space. To optimize this, tx and rx data tracepoints are splitted into header and payload tracepoints. To record tx ieee80211 headers trace-cmd record -e ath10k_tx_hdr To record complete packets trace-cmd record -e ath10k_tx_hdr -e ath10k_tx_payload Cc: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-10-31ath10k: speed up hw recoveryMichal Kazior
In some cases hw recovery was taking an absurdly long time due to ath10k waiting for things that would never really complete. Instead of waiting for inevitable timeouts poke all completions and wakequeues and check if it's still worth waiting. Reading/writing ar->state requires conf_mutex. Since waiters might be holding it introduce a new flag CRASH_FLUSH so it's possible to tell waiters to abort whatever they were waiting for. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-10-08ath10k: add tracing for frame transmissionRajkumar Manoharan
Add tracing support to forward management and data frames to user space for packet inspection. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-10-07ath10k: add tracing for tx infoRajkumar Manoharan
The tx info such as msdu_id, frame len, vdev id and tid are reported to user space by tracepoint. This is useful for collecting tx statistics. Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-09-18ath10k: don't use return on void functionsKalle Valo
Fixes a checkpatch warning: WARNING: void function return statements are not generally useful Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-09-18ath10k: fix use of multiple blank linesKalle Valo
Fixes checkpatch warnings: CHECK: Please don't use multiple blank lines Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-08-26ath10k: improve logging to include dev idMichal Kazior
This makes it a lot easier to log and debug messages if there's more than 1 ath10k device on a system. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-07-21ath10k: prevent some tx flushing failuresMichal Kazior
Firmware could request inspection of some submitted tx requests. Since the callback wasn't implemented it was possible to bleed tx msdu_ids which could translate to tx flushing timeouts. There's nothing ath10k can do to help firmware with tx processing now so just report all tx frames as already inspected to prevent firmware from sending up inspection events and force it to report regular tx completion indications with discard status. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-07-14ath10k: add implementation for configure max amsdu, ampduJanusz Dziedzic
Allow to setup maximum subframes for AMSDU and AMPDU aggregation via debugfs htt_max_amsdu_ampdu file. Eg. echo "2 64" > htt_max_amsdu_ampdu will setup maximum amsdu subframes equal 2 and maximum ampdu subframes equal to 64. Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-05-23ath10k: fix core start sequenceMichal Kazior
It was possible to call hif_stop() 2 times through ath10k_htc_connect_init() timeout failpath which could lead to double free_irq() kernel splat for multiple MSI interrupt case. Re-order init sequence to avoid this problem. The HTC stop shouldn't stop HIF implicitly since it doesn't implicitly start it. Since the re-ordering required some functions to be split/removed/renamed rename a few functions to make more sense while at it. Reported-By: Ben Greear <greearb@candelatech.com> Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-02-28ath10k: reduce htt tx/rx spinlock overheadMichal Kazior
It is inefficient to grab irqsave spinlocks for skb lists for each queue/dequeue action. Using rx_ring.lock and tx_lock allows to use less heavy bh spinlock functions and moving locking upwards allows to toggle spinlocks less often. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-02-28ath10k: bypass htc for htt tx pathMichal Kazior
Going through full htc tx path for htt tx is a waste of resources. By skipping it it's possible to easily submit scatter-gather to the pci hif for reduced host cpu load and improved performance. The new approach uses dma pool to store the following metadata for each tx request: * msdu fragment list * htc header * htt tx command The htt tx command contains a msdu prefetch. Instead of copying it original mapped msdu address is used to submit a second scatter-gather item to hif to make a complete htt tx command. The htt tx command itself hands over dma mapped pointers to msdus and completion of the command itself doesn't mean the frame has been sent and can be unmapped/freed. This is why htc tx completion is skipped for htt tx as all tx related resources are freed upon htt tx completion indication event (which also implicitly means htt tx command itself was completed). Since now each htt tx request effectively consists of 2 copy engine items CE_HTT_H2T_MSG_SRC_NENTRIES is updated to allow maximum of TARGET_10X_NUM_MSDU_DESC msdus being queued. This keeps the tx path resource management simple. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-02-28ath10k: remove DMA mapping wrappersMichal Kazior
There's no real benefit from using them. DMA-API already provides debugging. Some skbuffs are already mapped directly with DMA-API since wrapper arguments were insufficient and extending them would be pointless. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2014-02-13ath10k: better tx/rx debuggingBen Greear
Make it easier to grep for htt rx errors. Signed-off-by: Ben Greear <greearb@candelatech.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-10-21ath10k: fix FW crashes on heavy TX on 10.1.389 AP FWMichal Kazior
10.1.389 firmware has some differences in calculation of number of outstanding HTT TX completions. This led to FW crashes of 10.1.389 while main firmware branch was unnaffected. The patch makes sure ath10k doesn't queue up more MSDUs than it should. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-09-27ath10k: bring back the WMI path for mgmt framesBartosz Markowski
This is still the only way to submit mgmt frames in case of 10.X firmware. This patch introduces wmi_mgmt_tx queue, because of the fact WMI command can block. This is a problem for ath10k_tx_htt(), since it's called from atomic context. The skb queue and worker are introduced to move the mgmt frame handling out of .tx callback context and not block. Signed-off-by: Bartosz Markowski <bartosz.markowski@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-09-20ath10k: use msdu headroom to store txfragMichal Kazior
Instead of allocating sk_buff for a mere 16-byte tx fragment list buffer use headroom of the original msdu sk_buff. This decreases CPU cache pressure and improves performance. Measured improvement on AP135 is 560mbps -> 590mbps of UDP TX briding traffic. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-09-20ath10k: cleanup HTT TX functionsMichal Kazior
Use a saner goto scheme for failure handling. Also group operations more sensibly. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-09-20ath10k: decouple HTT TX completionsMichal Kazior
Until now the all MSDU transfer related structures were freed when all resources were unreferenced. Now HTC transfer is freed independently and HTT transfer is so too. This yields a way more simpler ath10k_skb_cb and should possibly enable parallel pipe processing (which is now serialized in ath10k_pci_process_ce routine). Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-09-20ath10k: avoid needless memset on TX pathMichal Kazior
This reduces number of memory accesses and hopefully contributes to better performance in the future. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-09-12ath10k: add boot messages to htt.cKalle Valo
To unify the boot debug level. Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-09-06ath10k: add htt_stats_enable debugfs fileKalle Valo
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-08-15ath10k: add support for HTT 3.0Michal Kazior
New firmware comes with new HTT protocol version. In 3.0 the separate mgmt tx command has been removed. All traffic is to be pushed through data tx (tx_frm) command with a twist - FW seems to not be able (yet?) to access tx fragment table so for manamgement frames frame pointer is passed directly. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-08-02ath10k: implement tx checksum offloadingMichal Kazior
HW supports L3/L4 tx checksum offloading. This should reduce CPU load and improve performance on slow host machines. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-07-30ath10k: embed HTT struct inside ath10kMichal Kazior
This reduces number of allocations and simplifies memory managemnt. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-07-30ath10k: embed HTC struct inside ath10kMichal Kazior
This reduces number of allocations and simplifies memory managemnt. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
2013-06-12ath10k: mac80211 driver for Qualcomm Atheros 802.11ac CQA98xx devicesKalle Valo
Here's a new mac80211 driver for Qualcomm Atheros 802.11ac QCA98xx devices. A major difference from ath9k is that there's now a firmware and that's why we had to implement a new driver. The wiki page for the driver is: http://wireless.kernel.org/en/users/Drivers/ath10k The driver has had many authors, they are listed here alphabetically: Bartosz Markowski <bartosz.markowski@tieto.com> Janusz Dziedzic <janusz.dziedzic@tieto.com> Kalle Valo <kvalo@qca.qualcomm.com> Marek Kwaczynski <marek.kwaczynski@tieto.com> Marek Puzyniak <marek.puzyniak@tieto.com> Michal Kazior <michal.kazior@tieto.com> Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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