/*
* CFG802.11 network device handler for transmission timeout.
*/
static void
mwifiex_tx_timeout(struct net_device *dev)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
dev_err(priv->adapter->dev, "%lu : Tx timeout, bss_type-num = %d-%d\n",
jiffies, priv->bss_type, priv->bss_num);
mwifiex_set_trans_start(dev);
priv->num_tx_timeout++;
}
/*
* Packet send completion callback handler.
*
* It either frees the buffer directly or forwards it to another
* completion callback which checks conditions, updates statistics,
* wakes up stalled traffic queue if required, and then frees the buffer.
*/
int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
struct sk_buff *skb, int aggr, int status)
{
struct mwifiex_private *priv;
struct mwifiex_txinfo *tx_info;
struct netdev_queue *txq;
int index;
if (!skb)
return 0;
tx_info = MWIFIEX_SKB_TXCB(skb);
priv = mwifiex_get_priv_by_id(adapter, tx_info->bss_num,
tx_info->bss_type);
if (!priv)
goto done;
if (adapter->iface_type == MWIFIEX_USB)
adapter->data_sent = false;
mwifiex_set_trans_start(priv->netdev);
if (!status) {
priv->stats.tx_packets++;
priv->stats.tx_bytes += skb->len;
if (priv->tx_timeout_cnt)
priv->tx_timeout_cnt = 0;
} else {
priv->stats.tx_errors++;
}
if (tx_info->flags & MWIFIEX_BUF_FLAG_BRIDGED_PKT)
atomic_dec_return(&adapter->pending_bridged_pkts);
if (aggr)
/* For skb_aggr, do not wake up tx queue */
goto done;
atomic_dec(&adapter->tx_pending);
index = mwifiex_1d_to_wmm_queue[skb->priority];
if (atomic_dec_return(&priv->wmm_tx_pending[index]) < LOW_TX_PENDING) {
txq = netdev_get_tx_queue(priv->netdev, index);
if (netif_tx_queue_stopped(txq)) {
netif_tx_wake_queue(txq);
dev_dbg(adapter->dev, "wake queue: %d\n", index);
}
}
done:
dev_kfree_skb_any(skb);
return 0;
}
/*
* CFG802.11 network device handler for transmission timeout.
*/
static void
mwifiex_tx_timeout(struct net_device *dev)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
priv->num_tx_timeout++;
priv->tx_timeout_cnt++;
dev_err(priv->adapter->dev,
"%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
jiffies, priv->tx_timeout_cnt, priv->bss_type, priv->bss_num);
mwifiex_set_trans_start(dev);
if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
priv->adapter->if_ops.card_reset) {
dev_err(priv->adapter->dev,
"tx_timeout_cnt exceeds threshold. Triggering card reset!\n");
priv->adapter->if_ops.card_reset(priv->adapter);
}
}
/*
* Packet send completion callback handler.
*
* It either frees the buffer directly or forwards it to another
* completion callback which checks conditions, updates statistics,
* wakes up stalled traffic queue if required, and then frees the buffer.
*/
int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
struct sk_buff *skb, int status)
{
struct mwifiex_private *priv, *tpriv;
struct mwifiex_txinfo *tx_info;
int i;
if (!skb)
return 0;
tx_info = MWIFIEX_SKB_TXCB(skb);
priv = mwifiex_get_priv_by_id(adapter, tx_info->bss_num,
tx_info->bss_type);
if (!priv)
goto done;
mwifiex_set_trans_start(priv->netdev);
if (!status) {
priv->stats.tx_packets++;
priv->stats.tx_bytes += skb->len;
} else {
priv->stats.tx_errors++;
}
if (atomic_dec_return(&adapter->tx_pending) >= LOW_TX_PENDING)
goto done;
for (i = 0; i < adapter->priv_num; i++) {
tpriv = adapter->priv[i];
if ((GET_BSS_ROLE(tpriv) == MWIFIEX_BSS_ROLE_STA) &&
(tpriv->media_connected)) {
if (netif_queue_stopped(tpriv->netdev))
mwifiex_wake_up_net_dev_queue(tpriv->netdev,
adapter);
}
}
done:
dev_kfree_skb_any(skb);
return 0;
}
static void mwifiex_uap_queue_bridged_pkt(struct mwifiex_private *priv,
struct sk_buff *skb)
{
struct mwifiex_adapter *adapter = priv->adapter;
struct uap_rxpd *uap_rx_pd;
struct rx_packet_hdr *rx_pkt_hdr;
struct sk_buff *new_skb;
struct mwifiex_txinfo *tx_info;
int hdr_chop;
struct timeval tv;
u8 rfc1042_eth_hdr[ETH_ALEN] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
uap_rx_pd = (struct uap_rxpd *)(skb->data);
rx_pkt_hdr = (void *)uap_rx_pd + le16_to_cpu(uap_rx_pd->rx_pkt_offset);
if ((atomic_read(&adapter->pending_bridged_pkts) >=
MWIFIEX_BRIDGED_PKTS_THRESHOLD)) {
dev_err(priv->adapter->dev,
"Tx: Bridge packet limit reached. Drop packet!\n");
kfree_skb(skb);
return;
}
if (!memcmp(&rx_pkt_hdr->rfc1042_hdr,
rfc1042_eth_hdr, sizeof(rfc1042_eth_hdr)))
/* Chop off the rxpd + the excess memory from
* 802.2/llc/snap header that was removed.
*/
hdr_chop = (u8 *)eth_hdr - (u8 *)uap_rx_pd;
else
/* Chop off the rxpd */
hdr_chop = (u8 *)&rx_pkt_hdr->eth803_hdr - (u8 *)uap_rx_pd;
/* Chop off the leading header bytes so the it points
* to the start of either the reconstructed EthII frame
* or the 802.2/llc/snap frame.
*/
skb_pull(skb, hdr_chop);
if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
dev_dbg(priv->adapter->dev,
"data: Tx: insufficient skb headroom %d\n",
skb_headroom(skb));
/* Insufficient skb headroom - allocate a new skb */
new_skb =
skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
if (unlikely(!new_skb)) {
dev_err(priv->adapter->dev,
"Tx: cannot allocate new_skb\n");
kfree_skb(skb);
priv->stats.tx_dropped++;
return;
}
kfree_skb(skb);
skb = new_skb;
dev_dbg(priv->adapter->dev, "info: new skb headroom %d\n",
skb_headroom(skb));
}
tx_info = MWIFIEX_SKB_TXCB(skb);
tx_info->bss_num = priv->bss_num;
tx_info->bss_type = priv->bss_type;
tx_info->flags |= MWIFIEX_BUF_FLAG_BRIDGED_PKT;
do_gettimeofday(&tv);
skb->tstamp = timeval_to_ktime(tv);
mwifiex_wmm_add_buf_txqueue(priv, skb);
atomic_inc(&adapter->tx_pending);
atomic_inc(&adapter->pending_bridged_pkts);
if ((atomic_read(&adapter->tx_pending) >= MAX_TX_PENDING)) {
mwifiex_set_trans_start(priv->netdev);
mwifiex_stop_net_dev_queue(priv->netdev, priv->adapter);
}
return;
}