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| author | Bhagavathi Perumal S <bperumal@codeaurora.org> | 2018-12-20 09:53:34 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-12-20 19:02:18 +0200 |
| commit | a2864772f33aa0f22914049b7fe777b7d4ec05ee (patch) | |
| tree | 90e893bf847b0a6599b3afa4172da5c18b057e35 /drivers/net/wireless/ath/ath10k/hw.h | |
| parent | 68c295f21abc192163c416b333aca7c41a195075 (diff) | |
| download | linux-a2864772f33aa0f22914049b7fe777b7d4ec05ee.tar.bz2 | |
ath10k: fix warning due to msdu limit error
Some hardwares variants (QCA99x0) are limiting msdu deaggregation with
some threshold value(default limit in QCA99x0 is 64 msdus), it was introduced to
avoid excessive MSDU-deaggregation in error cases. When number of sub frames
exceeds the limit, target hardware will send all msdus starting from present
msdu in RAW format as a single msdu packet and it will be indicated with
error status bit "RX_MSDU_END_INFO0_MSDU_LIMIT_ERR" set in rx descriptor.
This msdu frame is a partial raw MSDU and does't have first msdu and ieee80211
header. It caused below warning message.
[ 320.151332] ------------[ cut here ]------------
[ 320.155006] WARNING: CPU: 0 PID: 3 at drivers/net/wireless/ath/ath10k/htt_rx.c:1188
In our issue case, MSDU limit error happened due to FCS error and generated
this warning message.
This fixes the warning by handling the MSDU limit error. If msdu limit error
happens, driver adds first MSDU's ieee80211 header and sets A-MSDU present bit
in QOS header so that upper layer processes this frame if it is valid or drop it
if FCS error set. And removed the warning message, hence partial msdus without
first msdu is expected in msdu limit error cases.
Tested on QCA9984, Firmware 10.4-3.6-00104
Signed-off-by: Bhagavathi Perumal S <bperumal@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/hw.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/hw.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h index 1b5da272d18c..e50a8dc5b093 100644 --- a/drivers/net/wireless/ath/ath10k/hw.h +++ b/drivers/net/wireless/ath/ath10k/hw.h @@ -624,6 +624,7 @@ struct ath10k_hw_ops { int (*rx_desc_get_l3_pad_bytes)(struct htt_rx_desc *rxd); void (*set_coverage_class)(struct ath10k *ar, s16 value); int (*enable_pll_clk)(struct ath10k *ar); + bool (*rx_desc_get_msdu_limit_error)(struct htt_rx_desc *rxd); }; extern const struct ath10k_hw_ops qca988x_ops; @@ -642,6 +643,15 @@ ath10k_rx_desc_get_l3_pad_bytes(struct ath10k_hw_params *hw, return 0; } +static inline bool +ath10k_rx_desc_msdu_limit_error(struct ath10k_hw_params *hw, + struct htt_rx_desc *rxd) +{ + if (hw->hw_ops->rx_desc_get_msdu_limit_error) + return hw->hw_ops->rx_desc_get_msdu_limit_error(rxd); + return false; +} + /* Target specific defines for MAIN firmware */ #define TARGET_NUM_VDEVS 8 #define TARGET_NUM_PEER_AST 2 |