2022-02-17 06:13:27

by Pradeep Kumar Chitrapu

[permalink] [raw]
Subject: [PATCH v10 1/3] ath11k: switch to using ieee80211_tx_status_ext()

This allows us to pass HE rates down into the stack.

Co-developed-by: Miles Hu <[email protected]>
Signed-off-by: Miles Hu <[email protected]>
Signed-off-by: John Crispin <[email protected]>
Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
---
drivers/net/wireless/ath/ath11k/dp_tx.c | 32 +++++++++++++++++++++----
1 file changed, 27 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/dp_tx.c b/drivers/net/wireless/ath/ath11k/dp_tx.c
index c7d7631efa5a..6f553a870e70 100644
--- a/drivers/net/wireless/ath/ath11k/dp_tx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_tx.c
@@ -519,9 +519,13 @@ static void ath11k_dp_tx_complete_msdu(struct ath11k *ar,
struct sk_buff *msdu,
struct hal_tx_status *ts)
{
+ struct ieee80211_tx_status status = { 0 };
struct ath11k_base *ab = ar->ab;
struct ieee80211_tx_info *info;
struct ath11k_skb_cb *skb_cb;
+ struct ath11k_peer *peer;
+ struct ath11k_sta *arsta;
+ struct rate_info rate;

if (WARN_ON_ONCE(ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_TQM)) {
/* Must not happen */
@@ -584,12 +588,30 @@ static void ath11k_dp_tx_complete_msdu(struct ath11k *ar,
ath11k_dp_tx_cache_peer_stats(ar, msdu, ts);
}

- /* NOTE: Tx rate status reporting. Tx completion status does not have
- * necessary information (for example nss) to build the tx rate.
- * Might end up reporting it out-of-band from HTT stats.
- */
+ spin_lock_bh(&ab->base_lock);
+ peer = ath11k_peer_find_by_id(ab, ts->peer_id);
+ if (!peer || !peer->sta) {
+ ath11k_dbg(ab, ATH11K_DBG_DATA,
+ "dp_tx: failed to find the peer with peer_id %d\n",
+ ts->peer_id);
+ spin_unlock_bh(&ab->base_lock);
+ dev_kfree_skb_any(msdu);
+ goto exit;
+ }
+ arsta = (struct ath11k_sta *)peer->sta->drv_priv;
+ status.sta = peer->sta;
+ status.skb = msdu;
+ status.info = info;
+ rate = arsta->last_txrate;
+ status.rate = &rate;

- ieee80211_tx_status(ar->hw, msdu);
+ spin_unlock_bh(&ab->base_lock);
+ rcu_read_unlock();
+
+ ieee80211_tx_status_ext(ar->hw, &status);
+ return;
+exit:
+ rcu_read_unlock();
}

static inline void ath11k_dp_tx_status_parse(struct ath11k_base *ab,
--
2.17.1


2022-02-22 00:33:03

by Kalle Valo

[permalink] [raw]
Subject: Re: [PATCH v10 1/3] ath11k: switch to using ieee80211_tx_status_ext()

Pradeep Kumar Chitrapu <[email protected]> writes:

> This allows us to pass HE rates down into the stack.
>
> Co-developed-by: Miles Hu <[email protected]>
> Signed-off-by: Miles Hu <[email protected]>
> Signed-off-by: John Crispin <[email protected]>
> Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
> ---
> drivers/net/wireless/ath/ath11k/dp_tx.c | 32 +++++++++++++++++++++----
> 1 file changed, 27 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath11k/dp_tx.c b/drivers/net/wireless/ath/ath11k/dp_tx.c
> index c7d7631efa5a..6f553a870e70 100644
> --- a/drivers/net/wireless/ath/ath11k/dp_tx.c
> +++ b/drivers/net/wireless/ath/ath11k/dp_tx.c
> @@ -519,9 +519,13 @@ static void ath11k_dp_tx_complete_msdu(struct ath11k *ar,
> struct sk_buff *msdu,
> struct hal_tx_status *ts)
> {
> + struct ieee80211_tx_status status = { 0 };
> struct ath11k_base *ab = ar->ab;
> struct ieee80211_tx_info *info;
> struct ath11k_skb_cb *skb_cb;
> + struct ath11k_peer *peer;
> + struct ath11k_sta *arsta;
> + struct rate_info rate;
>
> if (WARN_ON_ONCE(ts->buf_rel_source != HAL_WBM_REL_SRC_MODULE_TQM)) {
> /* Must not happen */
> @@ -584,12 +588,30 @@ static void ath11k_dp_tx_complete_msdu(struct ath11k *ar,
> ath11k_dp_tx_cache_peer_stats(ar, msdu, ts);
> }
>
> - /* NOTE: Tx rate status reporting. Tx completion status does not have
> - * necessary information (for example nss) to build the tx rate.
> - * Might end up reporting it out-of-band from HTT stats.
> - */
> + spin_lock_bh(&ab->base_lock);
> + peer = ath11k_peer_find_by_id(ab, ts->peer_id);
> + if (!peer || !peer->sta) {
> + ath11k_dbg(ab, ATH11K_DBG_DATA,
> + "dp_tx: failed to find the peer with peer_id %d\n",
> + ts->peer_id);
> + spin_unlock_bh(&ab->base_lock);
> + dev_kfree_skb_any(msdu);
> + goto exit;
> + }
> + arsta = (struct ath11k_sta *)peer->sta->drv_priv;
> + status.sta = peer->sta;
> + status.skb = msdu;
> + status.info = info;
> + rate = arsta->last_txrate;
> + status.rate = &rate;
>
> - ieee80211_tx_status(ar->hw, msdu);
> + spin_unlock_bh(&ab->base_lock);
> + rcu_read_unlock();
> +
> + ieee80211_tx_status_ext(ar->hw, &status);
> + return;
> +exit:
> + rcu_read_unlock();
> }

This patch gives a warning:

drivers/net/wireless/ath/ath11k/dp_tx.c:600:9: warning: context imbalance in 'ath11k_dp_tx_complete_msdu' - unexpected unlock

I don't understand why there's rcu_read_unlock() so in the pending
branch I removed both of the calls and also the exit label.

https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/commit/?h=pending&id=cb63b88dca170d9de9ff30a546e08917e91c6f05

Please check my changes.

--
https://patchwork.kernel.org/project/linux-wireless/list/

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

2022-02-24 10:04:21

by Kalle Valo

[permalink] [raw]
Subject: Re: [PATCH v10 1/3] ath11k: switch to using ieee80211_tx_status_ext()

Pradeep Kumar Chitrapu <[email protected]> wrote:

> This allows us to pass HE rates down into the stack.
>
> Co-developed-by: Miles Hu <[email protected]>
> Signed-off-by: Miles Hu <[email protected]>
> Signed-off-by: John Crispin <[email protected]>
> Signed-off-by: Pradeep Kumar Chitrapu <[email protected]>
> Signed-off-by: Kalle Valo <[email protected]>

3 patches applied to ath-next branch of ath.git, thanks.

94739d45c388 ath11k: switch to using ieee80211_tx_status_ext()
01d2f285e3e5 ath11k: decode HE status tlv
ab0a9ef605cf ath11k: translate HE status to radiotap format

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

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