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author | Michal Kazior <michal.kazior@tieto.com> | 2015-11-18 06:59:21 +0100 |
---|---|---|
committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2015-11-23 17:12:29 +0200 |
commit | d668dbaebe430af8843ca6e83c1e44fd1efb20aa (patch) | |
tree | baf071264473a105e25f139f91927d3250ca090c /drivers/net/wireless | |
parent | 66b8a0108d73f9809b60d7e921189142207997c2 (diff) | |
download | lwn-d668dbaebe430af8843ca6e83c1e44fd1efb20aa.tar.gz lwn-d668dbaebe430af8843ca6e83c1e44fd1efb20aa.zip |
ath10k: fix tx header parsing
Frames are not guaranteed to be 802.11 frames in
ath10k_htt_tx() and the tx completion handler.
In some cases, like TDLS, they can be Ethernet.
Hence checking, e.g. frame_control could yield
bogus results and behavior.
Fortunately this wasn't a real problem so far
because there's no FW/HW combination to encounter
this problem.
However it is good to fix this in advance.
Fixes: 75d85fd9993c ("ath10k: introduce basic tdls functionality")
Fixes: eebc67fef3ee ("ath10k: fix pmf for wmi-tlv on qca6174")
Fixes: 7b7da0a02192 ("ath10k: drop probe responses when too many are queued")
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r-- | drivers/net/wireless/ath/ath10k/core.h | 1 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath10k/mac.c | 3 | ||||
-rw-r--r-- | drivers/net/wireless/ath/ath10k/txrx.c | 8 |
3 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index d0f2f2494ea9..933ffe3c2855 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -85,6 +85,7 @@ enum ath10k_skb_flags { ATH10K_SKB_F_NO_HWCRYPT = BIT(0), ATH10K_SKB_F_DTIM_ZERO = BIT(1), ATH10K_SKB_F_DELIVER_CAB = BIT(2), + ATH10K_SKB_F_MGMT = BIT(3), }; struct ath10k_skb_cb { diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index eca0cfe756d0..edf243358445 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -3689,6 +3689,9 @@ static void ath10k_tx(struct ieee80211_hw *hw, if (!ath10k_tx_h_use_hwcrypto(vif, skb)) skb_cb->flags |= ATH10K_SKB_F_NO_HWCRYPT; + if (ieee80211_is_mgmt(hdr->frame_control)) + skb_cb->flags |= ATH10K_SKB_F_MGMT; + skb_cb->htt.tid = ath10k_tx_h_get_tid(hdr); skb_cb->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif); diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c index 9e14c04ac89f..fbfb608e48ab 100644 --- a/drivers/net/wireless/ath/ath10k/txrx.c +++ b/drivers/net/wireless/ath/ath10k/txrx.c @@ -57,8 +57,6 @@ void ath10k_txrx_tx_unref(struct ath10k_htt *htt, struct ieee80211_tx_info *info; struct ath10k_skb_cb *skb_cb; struct sk_buff *msdu; - struct ieee80211_hdr *hdr; - __le16 fc; bool limit_mgmt_desc = false; ath10k_dbg(ar, ATH10K_DBG_HTT, @@ -81,10 +79,9 @@ void ath10k_txrx_tx_unref(struct ath10k_htt *htt, return; } - hdr = (struct ieee80211_hdr *)msdu->data; - fc = hdr->frame_control; + skb_cb = ATH10K_SKB_CB(msdu); - if (unlikely(ieee80211_is_mgmt(fc)) && + if (unlikely(skb_cb->flags & ATH10K_SKB_F_MGMT) && ar->hw_params.max_probe_resp_desc_thres) limit_mgmt_desc = true; @@ -94,7 +91,6 @@ void ath10k_txrx_tx_unref(struct ath10k_htt *htt, wake_up(&htt->empty_tx_wq); spin_unlock_bh(&htt->tx_lock); - skb_cb = ATH10K_SKB_CB(msdu); dma_unmap_single(dev, skb_cb->paddr, msdu->len, DMA_TO_DEVICE); ath10k_report_offchan_tx(htt->ar, msdu); |