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author | Kalle Valo <kvalo@codeaurora.org> | 2015-11-17 22:14:51 +0300 |
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committer | Kalle Valo <kvalo@codeaurora.org> | 2015-11-18 15:28:30 +0300 |
commit | 277b024e5e3d4af4c219c0b9bd541ca4398e0b69 (patch) | |
tree | 55a9a1f68cc9361620acd3f51a454c98a4fc6c95 /drivers/net/wireless/mwifiex/txrx.c | |
parent | dd3f92dea849d96272642579003754df9367c160 (diff) | |
download | linux-277b024e5e3d4af4c219c0b9bd541ca4398e0b69.tar.xz |
mwifiex: move under marvell vendor directory
Part of reorganising wireless drivers directory and Kconfig.
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/mwifiex/txrx.c')
-rw-r--r-- | drivers/net/wireless/mwifiex/txrx.c | 386 |
1 files changed, 0 insertions, 386 deletions
diff --git a/drivers/net/wireless/mwifiex/txrx.c b/drivers/net/wireless/mwifiex/txrx.c deleted file mode 100644 index bf6182b646a5..000000000000 --- a/drivers/net/wireless/mwifiex/txrx.c +++ /dev/null @@ -1,386 +0,0 @@ -/* - * Marvell Wireless LAN device driver: generic TX/RX data handling - * - * Copyright (C) 2011-2014, 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); - int ret; - - 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) { - mwifiex_dbg(adapter, ERROR, - "data: priv not found. Drop RX packet\n"); - dev_kfree_skb_any(skb); - return -1; - } - - mwifiex_dbg_dump(adapter, DAT_D, "rx pkt:", skb->data, - min_t(size_t, skb->len, DEBUG_DUMP_DATA_MAX_LEN)); - - memset(rx_info, 0, sizeof(*rx_info)); - rx_info->bss_num = priv->bss_num; - rx_info->bss_type = priv->bss_type; - - if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) - ret = mwifiex_process_uap_rx_packet(priv, skb); - else - ret = mwifiex_process_sta_rx_packet(priv, skb); - - return ret; -} -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 hroom, ret = -1; - struct mwifiex_adapter *adapter = priv->adapter; - u8 *head_ptr; - struct txpd *local_tx_pd = NULL; - struct mwifiex_sta_node *dest_node; - struct ethhdr *hdr = (void *)skb->data; - - hroom = (adapter->iface_type == MWIFIEX_USB) ? 0 : INTF_HEADER_LEN; - - if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) { - dest_node = mwifiex_get_sta_entry(priv, hdr->h_dest); - if (dest_node) { - dest_node->stats.tx_bytes += skb->len; - dest_node->stats.tx_packets++; - } - - head_ptr = mwifiex_process_uap_txpd(priv, skb); - } else { - head_ptr = mwifiex_process_sta_txpd(priv, skb); - } - - if ((adapter->data_sent || adapter->tx_lock_flag) && head_ptr) { - skb_queue_tail(&adapter->tx_data_q, skb); - atomic_inc(&adapter->tx_queued); - return 0; - } - - if (head_ptr) { - if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) - local_tx_pd = (struct txpd *)(head_ptr + hroom); - if (adapter->iface_type == MWIFIEX_USB) { - ret = adapter->if_ops.host_to_card(adapter, - priv->usb_port, - skb, NULL); - } else { - ret = adapter->if_ops.host_to_card(adapter, - MWIFIEX_TYPE_DATA, - skb, tx_param); - } - } - mwifiex_dbg_dump(adapter, DAT_D, "tx pkt:", skb->data, - min_t(size_t, skb->len, DEBUG_DUMP_DATA_MAX_LEN)); - - switch (ret) { - case -ENOSR: - mwifiex_dbg(adapter, DATA, "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; - } - mwifiex_dbg(adapter, ERROR, "data: -EBUSY is returned\n"); - break; - case -1: - mwifiex_dbg(adapter, ERROR, - "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: - break; - case 0: - mwifiex_write_data_complete(adapter, skb, 0, ret); - break; - default: - break; - } - - return ret; -} - -static int mwifiex_host_to_card(struct mwifiex_adapter *adapter, - struct sk_buff *skb, - struct mwifiex_tx_param *tx_param) -{ - struct txpd *local_tx_pd = NULL; - u8 *head_ptr = skb->data; - int ret = 0; - struct mwifiex_private *priv; - struct mwifiex_txinfo *tx_info; - - tx_info = MWIFIEX_SKB_TXCB(skb); - priv = mwifiex_get_priv_by_id(adapter, tx_info->bss_num, - tx_info->bss_type); - if (!priv) { - mwifiex_dbg(adapter, ERROR, - "data: priv not found. Drop TX packet\n"); - adapter->dbg.num_tx_host_to_card_failure++; - mwifiex_write_data_complete(adapter, skb, 0, 0); - return ret; - } - if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) { - if (adapter->iface_type == MWIFIEX_USB) - local_tx_pd = (struct txpd *)head_ptr; - else - local_tx_pd = (struct txpd *) (head_ptr + - INTF_HEADER_LEN); - } - - if (adapter->iface_type == MWIFIEX_USB) { - ret = adapter->if_ops.host_to_card(adapter, - priv->usb_port, - skb, NULL); - } else { - ret = adapter->if_ops.host_to_card(adapter, - MWIFIEX_TYPE_DATA, - skb, tx_param); - } - switch (ret) { - case -ENOSR: - mwifiex_dbg(adapter, ERROR, "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; - } - skb_queue_head(&adapter->tx_data_q, skb); - if (tx_info->flags & MWIFIEX_BUF_FLAG_AGGR_PKT) - atomic_add(tx_info->aggr_num, &adapter->tx_queued); - else - atomic_inc(&adapter->tx_queued); - mwifiex_dbg(adapter, ERROR, "data: -EBUSY is returned\n"); - break; - case -1: - mwifiex_dbg(adapter, ERROR, - "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: - break; - case 0: - mwifiex_write_data_complete(adapter, skb, 0, ret); - break; - default: - break; - } - return ret; -} - -static int -mwifiex_dequeue_tx_queue(struct mwifiex_adapter *adapter) -{ - struct sk_buff *skb, *skb_next; - struct mwifiex_txinfo *tx_info; - struct mwifiex_tx_param tx_param; - - skb = skb_dequeue(&adapter->tx_data_q); - if (!skb) - return -1; - - tx_info = MWIFIEX_SKB_TXCB(skb); - if (tx_info->flags & MWIFIEX_BUF_FLAG_AGGR_PKT) - atomic_sub(tx_info->aggr_num, &adapter->tx_queued); - else - atomic_dec(&adapter->tx_queued); - - if (!skb_queue_empty(&adapter->tx_data_q)) - skb_next = skb_peek(&adapter->tx_data_q); - else - skb_next = NULL; - tx_param.next_pkt_len = ((skb_next) ? skb_next->len : 0); - if (!tx_param.next_pkt_len) { - if (!mwifiex_wmm_lists_empty(adapter)) - tx_param.next_pkt_len = 1; - } - return mwifiex_host_to_card(adapter, skb, &tx_param); -} - -void -mwifiex_process_tx_queue(struct mwifiex_adapter *adapter) -{ - do { - if (adapter->data_sent || adapter->tx_lock_flag) - break; - if (mwifiex_dequeue_tx_queue(adapter)) - break; - } while (!skb_queue_empty(&adapter->tx_data_q)); -} - -/* - * 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; - - mwifiex_set_trans_start(priv->netdev); - if (!status) { - priv->stats.tx_packets++; - priv->stats.tx_bytes += tx_info->pkt_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 (tx_info->flags & MWIFIEX_BUF_FLAG_AGGR_PKT) - goto done; - - 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); - mwifiex_dbg(adapter, DATA, "wake queue: %d\n", index); - } - } -done: - dev_kfree_skb_any(skb); - - return 0; -} -EXPORT_SYMBOL_GPL(mwifiex_write_data_complete); - -void mwifiex_parse_tx_status_event(struct mwifiex_private *priv, - void *event_body) -{ - struct tx_status_event *tx_status = (void *)priv->adapter->event_body; - struct sk_buff *ack_skb; - unsigned long flags; - struct mwifiex_txinfo *tx_info; - - if (!tx_status->tx_token_id) - return; - - spin_lock_irqsave(&priv->ack_status_lock, flags); - ack_skb = idr_find(&priv->ack_status_frames, tx_status->tx_token_id); - if (ack_skb) - idr_remove(&priv->ack_status_frames, tx_status->tx_token_id); - spin_unlock_irqrestore(&priv->ack_status_lock, flags); - - if (ack_skb) { - tx_info = MWIFIEX_SKB_TXCB(ack_skb); - - if (tx_info->flags & MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS) { - /* consumes ack_skb */ - skb_complete_wifi_ack(ack_skb, !tx_status->status); - } else { - /* Remove broadcast address which was added by driver */ - memmove(ack_skb->data + - sizeof(struct ieee80211_hdr_3addr) + - MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(u16), - ack_skb->data + - sizeof(struct ieee80211_hdr_3addr) + - MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(u16) + - ETH_ALEN, ack_skb->len - - (sizeof(struct ieee80211_hdr_3addr) + - MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(u16) + - ETH_ALEN)); - ack_skb->len = ack_skb->len - ETH_ALEN; - /* Remove driver's proprietary header including 2 bytes - * of packet length and pass actual management frame buffer - * to cfg80211. - */ - cfg80211_mgmt_tx_status(&priv->wdev, tx_info->cookie, - ack_skb->data + - MWIFIEX_MGMT_FRAME_HEADER_SIZE + - sizeof(u16), ack_skb->len - - (MWIFIEX_MGMT_FRAME_HEADER_SIZE - + sizeof(u16)), - !tx_status->status, GFP_ATOMIC); - dev_kfree_skb_any(ack_skb); - } - } -} |