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ath10k: restore tx sk_buff of htt header for SDIO

PATCH In review Wen Gong 2 participants 3 messages Feb 9, 2021 – Feb 11, 2021 Qualcomm Atheros ATH10K wireless driver

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Wen Gong

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PATCH 1/1 ath10k: restore tx sk_buff of htt header for SDIO

ieee80211_report_used_skb of mac80211 use the frame_control of ieee80211_hdr in sk_buff and indicate it to another function ieee80211_mgd_conn_tx_status, then it queue work ieee80211_sta_work, but ieee80211_is_auth(fc) in ieee80211_sta_work check fail when the authentication has transmitted by ath10k.

When the ath10k report it with HTT_TX_COMPL_STATE_DISCARD, it will be set without flag IEEE80211_TX_STAT_ACK, then mac80211 should try the next authentication immeditely, but in fact mac80211 wait 1 second for it, the reason is ieee80211_is_auth(fc) in ieee80211_sta_work check fail for the sk_buff which is not restored, the data of sk_buff is not the begin of ieee80211_hdr, in fact it is the begin of htt_cmd_hdr.

dmesg without this patch, it wait 1 second for the next retry when ath10k report without IEEE80211_TX_STAT_ACK for authentication:

[ 6973.883116] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 1/3)
[ 6974.705471] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 2/3)
[ 6975.712962] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 3/3)

Restore the sk_buff make mac8011 retry the next authentication immeditely which meet logic of mac80211.

dmesg with this patch, it retry the next immeditely when ath10k report without IEEE80211_TX_STAT_ACK for authentication:

[  216.734813] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 1/3)
[  216.739914] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 2/3)
[  216.745874] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 3/3)

Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049

---
 drivers/net/wireless/ath/ath10k/htt_tx.c | 2 ++
 1 file changed, 2 insertions(+)
drivers/net/wireless/ath/ath10k/htt_tx.c +2 -0
index 9a109840a4c9..44c617834c56 100644
@@ -573,6 +573,8 @@ void ath10k_htt_htc_tx_complete(struct ath10k *ar, struct sk_buff *skb)
 			desc_hdr = (struct htt_data_tx_desc *)
 				(skb->data + sizeof(*htt_hdr));
 			flags1 = __le16_to_cpu(desc_hdr->flags1);
+			skb_pull(skb, sizeof(struct htt_cmd_hdr));
+			skb_pull(skb, sizeof(struct htt_data_tx_desc));
 		}
 	}
 
Signature · 7 lines
2.27.0


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#1 lore raw
Quoted 24 lines · Wen Gong

ieee80211_report_used_skb of mac80211 use the frame_control of ieee80211_hdr in sk_buff and indicate it to another function ieee80211_mgd_conn_tx_status, then it queue work ieee80211_sta_work, but ieee80211_is_auth(fc) in ieee80211_sta_work check fail when the authentication has transmitted by ath10k.

When the ath10k report it with HTT_TX_COMPL_STATE_DISCARD, it will be set without flag IEEE80211_TX_STAT_ACK, then mac80211 should try the next authentication immeditely, but in fact mac80211 wait 1 second for it, the reason is ieee80211_is_auth(fc) in ieee80211_sta_work check fail for the sk_buff which is not restored, the data of sk_buff is not the begin of ieee80211_hdr, in fact it is the begin of htt_cmd_hdr.

dmesg without this patch, it wait 1 second for the next retry when ath10k report without IEEE80211_TX_STAT_ACK for authentication:

[ 6973.883116] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 1/3)
[ 6974.705471] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 2/3)
[ 6975.712962] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 3/3)

Restore the sk_buff make mac8011 retry the next authentication immeditely which meet logic of mac80211.

dmesg with this patch, it retry the next immeditely when ath10k report without IEEE80211_TX_STAT_ACK for authentication:

Quoted 8 lines
[  216.734813] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 1/3)
[  216.739914] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 2/3)
[  216.745874] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 3/3)

Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049

Patch applied to ath-next branch of ath.git, thanks.

e6f1c0d26a31 ath10k: restore tx sk_buff of htt header for SDIO

Signature · 9 lines
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches


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ath10k mailing list
[email protected]
http://lists.infradead.org/mailman/listinfo/ath10k
#2 lore raw
In reply to Wen Gong
Quoted 24 lines · Wen Gong

ieee80211_report_used_skb of mac80211 use the frame_control of ieee80211_hdr in sk_buff and indicate it to another function ieee80211_mgd_conn_tx_status, then it queue work ieee80211_sta_work, but ieee80211_is_auth(fc) in ieee80211_sta_work check fail when the authentication has transmitted by ath10k.

When the ath10k report it with HTT_TX_COMPL_STATE_DISCARD, it will be set without flag IEEE80211_TX_STAT_ACK, then mac80211 should try the next authentication immeditely, but in fact mac80211 wait 1 second for it, the reason is ieee80211_is_auth(fc) in ieee80211_sta_work check fail for the sk_buff which is not restored, the data of sk_buff is not the begin of ieee80211_hdr, in fact it is the begin of htt_cmd_hdr.

dmesg without this patch, it wait 1 second for the next retry when ath10k report without IEEE80211_TX_STAT_ACK for authentication:

[ 6973.883116] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 1/3)
[ 6974.705471] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 2/3)
[ 6975.712962] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 3/3)

Restore the sk_buff make mac8011 retry the next authentication immeditely which meet logic of mac80211.

dmesg with this patch, it retry the next immeditely when ath10k report without IEEE80211_TX_STAT_ACK for authentication:

Quoted 8 lines
[  216.734813] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 1/3)
[  216.739914] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 2/3)
[  216.745874] wlan0: send auth to 5e:6f:2b:0d:fb:d7 (try 3/3)

Tested-on: QCA6174 hw3.2 SDIO WLAN.RMH.4.4.1-00049

Patch applied to ath-next branch of ath.git, thanks.

e6f1c0d26a31 ath10k: restore tx sk_buff of htt header for SDIO

Signature · 3 lines
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches