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ath10k: replenish htc tx credits always

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There's always at most 2 credits and it makes
little sense to set the
ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE flag
conditionally.

This seems to fix some random issues with tx
credit starvation on WLAN.RM.2.0-00073 I've been
seeing. Note: this isn't related to wmi mgmt tx.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2015-04-01 22:53:19 +03:00 • committed by Kalle Valo
parent f42f8eb27e
commit 5d5c8ec9e4
1 changed files with 1 additions and 19 deletions
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20
drivers/net/wireless/ath/ath10k/htc.c
View file

@ -86,21 +86,6 @@ static void ath10k_htc_notify_tx_completion(struct ath10k_htc_ep *ep,
ep->ep_ops.ep_tx_complete(ep->htc->ar, skb); ep->ep_ops.ep_tx_complete(ep->htc->ar, skb);
} }
/* assumes tx_lock is held */
static bool ath10k_htc_ep_need_credit_update(struct ath10k_htc_ep *ep)
{
struct ath10k *ar = ep->htc->ar;
if (!ep->tx_credit_flow_enabled)
return false;
if (ep->tx_credits >= ep->tx_credits_per_max_message)
return false;
ath10k_dbg(ar, ATH10K_DBG_HTC, "HTC: endpoint %d needs credit update\n",
ep->eid);
return true;
}
static void ath10k_htc_prepare_tx_skb(struct ath10k_htc_ep *ep, static void ath10k_htc_prepare_tx_skb(struct ath10k_htc_ep *ep,
struct sk_buff *skb) struct sk_buff *skb)
{ {
@ -111,13 +96,10 @@ static void ath10k_htc_prepare_tx_skb(struct ath10k_htc_ep *ep,
hdr->eid = ep->eid; hdr->eid = ep->eid;
hdr->len = __cpu_to_le16(skb->len - sizeof(*hdr)); hdr->len = __cpu_to_le16(skb->len - sizeof(*hdr));
hdr->flags = 0; hdr->flags = 0;
hdr->flags |= ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE;
spin_lock_bh(&ep->htc->tx_lock); spin_lock_bh(&ep->htc->tx_lock);
hdr->seq_no = ep->seq_no++; hdr->seq_no = ep->seq_no++;
if (ath10k_htc_ep_need_credit_update(ep))
hdr->flags |= ATH10K_HTC_FLAG_NEED_CREDIT_UPDATE;
spin_unlock_bh(&ep->htc->tx_lock); spin_unlock_bh(&ep->htc->tx_lock);
} }