C++ (Cpp) ath9k_htc_tx_start Examples

Example #1

File: htc_drv_beacon.c Project: CSCLOG/beaglebone

static void ath9k_htc_send_buffered(struct ath9k_htc_priv *priv,
				    int slot)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ieee80211_vif *vif;
	struct sk_buff *skb;
	struct ieee80211_hdr *hdr;
	int padpos, padsize, ret, tx_slot;

	spin_lock_bh(&priv->beacon_lock);

	vif = priv->cur_beacon_conf.bslot[slot];

	skb = ieee80211_get_buffered_bc(priv->hw, vif);

	while(skb) {
		hdr = (struct ieee80211_hdr *) skb->data;

		padpos = ath9k_cmn_padpos(hdr->frame_control);
		padsize = padpos & 3;
		if (padsize && skb->len > padpos) {
			if (skb_headroom(skb) < padsize) {
				dev_kfree_skb_any(skb);
				goto next;
			}
			skb_push(skb, padsize);
			memmove(skb->data, skb->data + padsize, padpos);
		}

		tx_slot = ath9k_htc_tx_get_slot(priv);
		if (tx_slot < 0) {
			ath_dbg(common, ATH_DBG_XMIT, "No free CAB slot\n");
			dev_kfree_skb_any(skb);
			goto next;
		}

		ret = ath9k_htc_tx_start(priv, skb, tx_slot, true);
		if (ret != 0) {
			ath9k_htc_tx_clear_slot(priv, tx_slot);
			dev_kfree_skb_any(skb);

			ath_dbg(common, ATH_DBG_XMIT,
				"Failed to send CAB frame\n");
		} else {
			spin_lock_bh(&priv->tx.tx_lock);
			priv->tx.queued_cnt++;
			spin_unlock_bh(&priv->tx.tx_lock);
		}
	next:
		skb = ieee80211_get_buffered_bc(priv->hw, vif);
	}

	spin_unlock_bh(&priv->beacon_lock);
}

Example #2

File: htc_drv_main.c Project: asebak/backports-3.18.1-1

static void ath9k_htc_tx(struct ieee80211_hw *hw,
			 struct ieee80211_tx_control *control,
			 struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr;
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_common *common = ath9k_hw_common(priv->ah);
	int padpos, padsize, ret, slot;

	hdr = (struct ieee80211_hdr *) skb->data;

	/* Add the padding after the header if this is not already done */
	padpos = ieee80211_hdrlen(hdr->frame_control);
	padsize = padpos & 3;
	if (padsize && skb->len > padpos) {
		if (skb_headroom(skb) < padsize) {
			ath_dbg(common, XMIT, "No room for padding\n");
			goto fail_tx;
		}
		skb_push(skb, padsize);
		memmove(skb->data, skb->data + padsize, padpos);
	}

	slot = ath9k_htc_tx_get_slot(priv);
	if (slot < 0) {
		ath_dbg(common, XMIT, "No free TX slot\n");
		goto fail_tx;
	}

	ret = ath9k_htc_tx_start(priv, control->sta, skb, slot, false);
	if (ret != 0) {
		ath_dbg(common, XMIT, "Tx failed\n");
		goto clear_slot;
	}

	ath9k_htc_check_stop_queues(priv);

	return;

clear_slot:
	ath9k_htc_tx_clear_slot(priv, slot);
fail_tx:
	dev_kfree_skb_any(skb);
}

Example #3

File: htc_drv_main.c Project: ANFS/ANFS-kernel

static int ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr;
	struct ath9k_htc_priv *priv = hw->priv;
	int padpos, padsize, ret;

	hdr = (struct ieee80211_hdr *) skb->data;

	/* Add the padding after the header if this is not already done */
	padpos = ath9k_cmn_padpos(hdr->frame_control);
	padsize = padpos & 3;
	if (padsize && skb->len > padpos) {
		if (skb_headroom(skb) < padsize)
			return -1;
		skb_push(skb, padsize);
		memmove(skb->data, skb->data + padsize, padpos);
	}

	ret = ath9k_htc_tx_start(priv, skb);
	if (ret != 0) {
		if (ret == -ENOMEM) {
			ath_dbg(ath9k_hw_common(priv->ah), ATH_DBG_XMIT,
				"Stopping TX queues\n");
			ieee80211_stop_queues(hw);
			spin_lock_bh(&priv->tx_lock);
			priv->tx_queues_stop = true;
			spin_unlock_bh(&priv->tx_lock);
		} else {
			ath_dbg(ath9k_hw_common(priv->ah), ATH_DBG_XMIT,
				"Tx failed\n");
		}
		goto fail_tx;
	}

	return 0;

fail_tx:
	dev_kfree_skb_any(skb);
	return 0;
}