diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/txrx.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/txrx.c | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/drivers/net/wireless/mwifiex/txrx.c b/drivers/net/wireless/mwifiex/txrx.c deleted file mode 100644 index 8f923d0d2ba6..000000000000 --- a/drivers/net/wireless/mwifiex/txrx.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * Marvell Wireless LAN device driver: generic TX/RX data handling - * - * Copyright (C) 2011, Marvell International Ltd. - * - * This software file (the "File") is distributed by Marvell International - * Ltd. under the terms of the GNU General Public License Version 2, June 1991 - * (the "License"). You may use, redistribute and/or modify this File in - * accordance with the terms and conditions of the License, a copy of which - * is available by writing to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the - * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. - * - * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE - * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE - * ARE EXPRESSLY DISCLAIMED. The License provides additional details about - * this warranty disclaimer. - */ - -#include "decl.h" -#include "ioctl.h" -#include "util.h" -#include "fw.h" -#include "main.h" -#include "wmm.h" - -/* - * This function processes the received buffer. - * - * Main responsibility of this function is to parse the RxPD to - * identify the correct interface this packet is headed for and - * forwarding it to the associated handling function, where the - * packet will be further processed and sent to kernel/upper layer - * if required. - */ -int mwifiex_handle_rx_packet(struct mwifiex_adapter *adapter, - struct sk_buff *skb) -{ - struct mwifiex_private *priv = - mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); - struct rxpd *local_rx_pd; - struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); - - local_rx_pd = (struct rxpd *) (skb->data); - /* Get the BSS number from rxpd, get corresponding priv */ - priv = mwifiex_get_priv_by_id(adapter, local_rx_pd->bss_num & - BSS_NUM_MASK, local_rx_pd->bss_type); - if (!priv) - priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); - - if (!priv) { - dev_err(adapter->dev, "data: priv not found. Drop RX packet\n"); - dev_kfree_skb_any(skb); - return -1; - } - - rx_info->bss_num = priv->bss_num; - rx_info->bss_type = priv->bss_type; - - if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) - return mwifiex_process_uap_rx_packet(priv, skb); - - return mwifiex_process_sta_rx_packet(priv, skb); -} -EXPORT_SYMBOL_GPL(mwifiex_handle_rx_packet); - -/* - * This function sends a packet to device. - * - * It processes the packet to add the TxPD, checks condition and - * sends the processed packet to firmware for transmission. - * - * On successful completion, the function calls the completion callback - * and logs the time. - */ -int mwifiex_process_tx(struct mwifiex_private *priv, struct sk_buff *skb, - struct mwifiex_tx_param *tx_param) -{ - int ret = -1; - struct mwifiex_adapter *adapter = priv->adapter; - u8 *head_ptr; - struct txpd *local_tx_pd = NULL; - - if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) - head_ptr = mwifiex_process_uap_txpd(priv, skb); - else - head_ptr = mwifiex_process_sta_txpd(priv, skb); - - if (head_ptr) { - if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) - local_tx_pd = - (struct txpd *) (head_ptr + INTF_HEADER_LEN); - if (adapter->iface_type == MWIFIEX_USB) { - adapter->data_sent = true; - skb_pull(skb, INTF_HEADER_LEN); - ret = adapter->if_ops.host_to_card(adapter, - MWIFIEX_USB_EP_DATA, - skb, NULL); - } else { - ret = adapter->if_ops.host_to_card(adapter, - MWIFIEX_TYPE_DATA, - skb, tx_param); - } - } - - switch (ret) { - case -ENOSR: - dev_err(adapter->dev, "data: -ENOSR is returned\n"); - break; - case -EBUSY: - if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && - (adapter->pps_uapsd_mode) && (adapter->tx_lock_flag)) { - priv->adapter->tx_lock_flag = false; - if (local_tx_pd) - local_tx_pd->flags = 0; - } - dev_dbg(adapter->dev, "data: -EBUSY is returned\n"); - break; - case -1: - if (adapter->iface_type != MWIFIEX_PCIE) - adapter->data_sent = false; - dev_err(adapter->dev, "mwifiex_write_data_async failed: 0x%X\n", - ret); - adapter->dbg.num_tx_host_to_card_failure++; - mwifiex_write_data_complete(adapter, skb, 0, ret); - break; - case -EINPROGRESS: - if (adapter->iface_type != MWIFIEX_PCIE) - adapter->data_sent = false; - break; - case 0: - mwifiex_write_data_complete(adapter, skb, 0, ret); - break; - default: - break; - } - - return ret; -} - -/* - * 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; -} -EXPORT_SYMBOL_GPL(mwifiex_write_data_complete); - |