1 files changed, 0 insertions, 437 deletions

diff --git a/drivers/net/wireless/mwifiex/uap_txrx.c b/drivers/net/wireless/mwifiex/uap_txrx.c
deleted file mode 100644
index 74d5d7238633..000000000000
--- a/drivers/net/wireless/mwifiex/uap_txrx.c
+++ /dev/null
@@ -1,437 +0,0 @@
-/*
- * Marvell Wireless LAN device driver: AP TX and RX data handling
- *
- * Copyright (C) 2012-2014, 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 "main.h"
-#include "wmm.h"
-#include "11n_aggr.h"
-#include "11n_rxreorder.h"
-
-/* This function checks if particular RA list has packets more than low bridge
- * packet threshold and then deletes packet from this RA list.
- * Function deletes packets from such RA list and returns true. If no such list
- * is found, false is returned.
- */
-static bool
-mwifiex_uap_del_tx_pkts_in_ralist(struct mwifiex_private *priv,
-				  struct list_head *ra_list_head,
-				  int tid)
-{
-	struct mwifiex_ra_list_tbl *ra_list;
-	struct sk_buff *skb, *tmp;
-	bool pkt_deleted = false;
-	struct mwifiex_txinfo *tx_info;
-	struct mwifiex_adapter *adapter = priv->adapter;
-
-	list_for_each_entry(ra_list, ra_list_head, list) {
-		if (skb_queue_empty(&ra_list->skb_head))
-			continue;
-
-		skb_queue_walk_safe(&ra_list->skb_head, skb, tmp) {
-			tx_info = MWIFIEX_SKB_TXCB(skb);
-			if (tx_info->flags & MWIFIEX_BUF_FLAG_BRIDGED_PKT) {
-				__skb_unlink(skb, &ra_list->skb_head);
-				mwifiex_write_data_complete(adapter, skb, 0,
-							    -1);
-				if (ra_list->tx_paused)
-					priv->wmm.pkts_paused[tid]--;
-				else
-					atomic_dec(&priv->wmm.tx_pkts_queued);
-				pkt_deleted = true;
-			}
-			if ((atomic_read(&adapter->pending_bridged_pkts) <=
-					     MWIFIEX_BRIDGED_PKTS_THR_LOW))
-				break;
-		}
-	}
-
-	return pkt_deleted;
-}
-
-/* This function deletes packets from particular RA List. RA list index
- * from which packets are deleted is preserved so that packets from next RA
- * list are deleted upon subsequent call thus maintaining fairness.
- */
-static void mwifiex_uap_cleanup_tx_queues(struct mwifiex_private *priv)
-{
-	unsigned long flags;
-	struct list_head *ra_list;
-	int i;
-
-	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
-
-	for (i = 0; i < MAX_NUM_TID; i++, priv->del_list_idx++) {
-		if (priv->del_list_idx == MAX_NUM_TID)
-			priv->del_list_idx = 0;
-		ra_list = &priv->wmm.tid_tbl_ptr[priv->del_list_idx].ra_list;
-		if (mwifiex_uap_del_tx_pkts_in_ralist(priv, ra_list, i)) {
-			priv->del_list_idx++;
-			break;
-		}
-	}
-
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-}
-
-
-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 ethhdr *p_ethhdr;
-	struct mwifiex_sta_node *src_node;
-
-	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_THR_HIGH)) {
-		mwifiex_dbg(priv->adapter, ERROR,
-			    "Tx: Bridge packet limit reached. Drop packet!\n");
-		kfree_skb(skb);
-		mwifiex_uap_cleanup_tx_queues(priv);
-		return;
-	}
-
-	if ((!memcmp(&rx_pkt_hdr->rfc1042_hdr, bridge_tunnel_header,
-		     sizeof(bridge_tunnel_header))) ||
-	    (!memcmp(&rx_pkt_hdr->rfc1042_hdr, rfc1042_header,
-		     sizeof(rfc1042_header)) &&
-	     ntohs(rx_pkt_hdr->rfc1042_hdr.snap_type) != ETH_P_AARP &&
-	     ntohs(rx_pkt_hdr->rfc1042_hdr.snap_type) != ETH_P_IPX)) {
-		/* Replace the 803 header and rfc1042 header (llc/snap) with
-		 * an Ethernet II header, keep the src/dst and snap_type
-		 * (ethertype).
-		 *
-		 * The firmware only passes up SNAP frames converting all RX
-		 * data from 802.11 to 802.2/LLC/SNAP frames.
-		 *
-		 * To create the Ethernet II, just move the src, dst address
-		 * right before the snap_type.
-		 */
-		p_ethhdr = (struct ethhdr *)
-			((u8 *)(&rx_pkt_hdr->eth803_hdr)
-			 + sizeof(rx_pkt_hdr->eth803_hdr)
-			 + sizeof(rx_pkt_hdr->rfc1042_hdr)
-			 - sizeof(rx_pkt_hdr->eth803_hdr.h_dest)
-			 - sizeof(rx_pkt_hdr->eth803_hdr.h_source)
-			 - sizeof(rx_pkt_hdr->rfc1042_hdr.snap_type));
-		memcpy(p_ethhdr->h_source, rx_pkt_hdr->eth803_hdr.h_source,
-		       sizeof(p_ethhdr->h_source));
-		memcpy(p_ethhdr->h_dest, rx_pkt_hdr->eth803_hdr.h_dest,
-		       sizeof(p_ethhdr->h_dest));
-		/* Chop off the rxpd + the excess memory from
-		 * 802.2/llc/snap header that was removed.
-		 */
-		hdr_chop = (u8 *)p_ethhdr - (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 that 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) {
-		mwifiex_dbg(priv->adapter, ERROR,
-			    "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)) {
-			mwifiex_dbg(priv->adapter, ERROR,
-				    "Tx: cannot allocate new_skb\n");
-			kfree_skb(skb);
-			priv->stats.tx_dropped++;
-			return;
-		}
-
-		kfree_skb(skb);
-		skb = new_skb;
-		mwifiex_dbg(priv->adapter, INFO,
-			    "info: new skb headroom %d\n",
-			    skb_headroom(skb));
-	}
-
-	tx_info = MWIFIEX_SKB_TXCB(skb);
-	memset(tx_info, 0, sizeof(*tx_info));
-	tx_info->bss_num = priv->bss_num;
-	tx_info->bss_type = priv->bss_type;
-	tx_info->flags |= MWIFIEX_BUF_FLAG_BRIDGED_PKT;
-
-	src_node = mwifiex_get_sta_entry(priv, rx_pkt_hdr->eth803_hdr.h_source);
-	if (src_node) {
-		src_node->stats.last_rx = jiffies;
-		src_node->stats.rx_bytes += skb->len;
-		src_node->stats.rx_packets++;
-		src_node->stats.last_tx_rate = uap_rx_pd->rx_rate;
-		src_node->stats.last_tx_htinfo = uap_rx_pd->ht_info;
-	}
-
-	if (is_unicast_ether_addr(rx_pkt_hdr->eth803_hdr.h_dest)) {
-		/* Update bridge packet statistics as the
-		 * packet is not going to kernel/upper layer.
-		 */
-		priv->stats.rx_bytes += skb->len;
-		priv->stats.rx_packets++;
-
-		/* Sending bridge packet to TX queue, so save the packet
-		 * length in TXCB to update statistics in TX complete.
-		 */
-		tx_info->pkt_len = skb->len;
-	}
-
-	__net_timestamp(skb);
-	mwifiex_wmm_add_buf_txqueue(priv, skb);
-	atomic_inc(&adapter->tx_pending);
-	atomic_inc(&adapter->pending_bridged_pkts);
-
-	return;
-}
-
-/*
- * This function contains logic for AP packet forwarding.
- *
- * If a packet is multicast/broadcast, it is sent to kernel/upper layer
- * as well as queued back to AP TX queue so that it can be sent to other
- * associated stations.
- * If a packet is unicast and RA is present in associated station list,
- * it is again requeued into AP TX queue.
- * If a packet is unicast and RA is not in associated station list,
- * packet is forwarded to kernel to handle routing logic.
- */
-int mwifiex_handle_uap_rx_forward(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;
-	u8 ra[ETH_ALEN];
-	struct sk_buff *skb_uap;
-
-	uap_rx_pd = (struct uap_rxpd *)(skb->data);
-	rx_pkt_hdr = (void *)uap_rx_pd + le16_to_cpu(uap_rx_pd->rx_pkt_offset);
-
-	/* don't do packet forwarding in disconnected state */
-	if (!priv->media_connected) {
-		mwifiex_dbg(adapter, ERROR,
-			    "drop packet in disconnected state.\n");
-		dev_kfree_skb_any(skb);
-		return 0;
-	}
-
-	memcpy(ra, rx_pkt_hdr->eth803_hdr.h_dest, ETH_ALEN);
-
-	if (is_multicast_ether_addr(ra)) {
-		skb_uap = skb_copy(skb, GFP_ATOMIC);
-		mwifiex_uap_queue_bridged_pkt(priv, skb_uap);
-	} else {
-		if (mwifiex_get_sta_entry(priv, ra)) {
-			/* Requeue Intra-BSS packet */
-			mwifiex_uap_queue_bridged_pkt(priv, skb);
-			return 0;
-		}
-	}
-
-	/* Forward unicat/Inter-BSS packets to kernel. */
-	return mwifiex_process_rx_packet(priv, skb);
-}
-
-/*
- * This function processes the packet received on AP interface.
- *
- * The function looks into the RxPD and performs sanity tests on the
- * received buffer to ensure its a valid packet before processing it
- * further. If the packet is determined to be aggregated, it is
- * de-aggregated accordingly. Then skb is passed to AP packet forwarding logic.
- *
- * The completion callback is called after processing is complete.
- */
-int mwifiex_process_uap_rx_packet(struct mwifiex_private *priv,
-				  struct sk_buff *skb)
-{
-	struct mwifiex_adapter *adapter = priv->adapter;
-	int ret;
-	struct uap_rxpd *uap_rx_pd;
-	struct rx_packet_hdr *rx_pkt_hdr;
-	u16 rx_pkt_type;
-	u8 ta[ETH_ALEN], pkt_type;
-	unsigned long flags;
-	struct mwifiex_sta_node *node;
-
-	uap_rx_pd = (struct uap_rxpd *)(skb->data);
-	rx_pkt_type = le16_to_cpu(uap_rx_pd->rx_pkt_type);
-	rx_pkt_hdr = (void *)uap_rx_pd + le16_to_cpu(uap_rx_pd->rx_pkt_offset);
-
-	ether_addr_copy(ta, rx_pkt_hdr->eth803_hdr.h_source);
-
-	if ((le16_to_cpu(uap_rx_pd->rx_pkt_offset) +
-	     le16_to_cpu(uap_rx_pd->rx_pkt_length)) > (u16) skb->len) {
-		mwifiex_dbg(adapter, ERROR,
-			    "wrong rx packet: len=%d, offset=%d, length=%d\n",
-			    skb->len, le16_to_cpu(uap_rx_pd->rx_pkt_offset),
-			    le16_to_cpu(uap_rx_pd->rx_pkt_length));
-		priv->stats.rx_dropped++;
-
-		node = mwifiex_get_sta_entry(priv, ta);
-		if (node)
-			node->stats.tx_failed++;
-
-		dev_kfree_skb_any(skb);
-		return 0;
-	}
-
-	if (rx_pkt_type == PKT_TYPE_MGMT) {
-		ret = mwifiex_process_mgmt_packet(priv, skb);
-		if (ret)
-			mwifiex_dbg(adapter, ERROR,
-				    "Rx of mgmt packet failed");
-		dev_kfree_skb_any(skb);
-		return ret;
-	}
-
-
-	if (rx_pkt_type != PKT_TYPE_BAR && uap_rx_pd->priority < MAX_NUM_TID) {
-		spin_lock_irqsave(&priv->sta_list_spinlock, flags);
-		node = mwifiex_get_sta_entry(priv, ta);
-		if (node)
-			node->rx_seq[uap_rx_pd->priority] =
-						le16_to_cpu(uap_rx_pd->seq_num);
-		spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
-	}
-
-	if (!priv->ap_11n_enabled ||
-	    (!mwifiex_11n_get_rx_reorder_tbl(priv, uap_rx_pd->priority, ta) &&
-	    (le16_to_cpu(uap_rx_pd->rx_pkt_type) != PKT_TYPE_AMSDU))) {
-		ret = mwifiex_handle_uap_rx_forward(priv, skb);
-		return ret;
-	}
-
-	/* Reorder and send to kernel */
-	pkt_type = (u8)le16_to_cpu(uap_rx_pd->rx_pkt_type);
-	ret = mwifiex_11n_rx_reorder_pkt(priv, le16_to_cpu(uap_rx_pd->seq_num),
-					 uap_rx_pd->priority, ta, pkt_type,
-					 skb);
-
-	if (ret || (rx_pkt_type == PKT_TYPE_BAR))
-		dev_kfree_skb_any(skb);
-
-	if (ret)
-		priv->stats.rx_dropped++;
-
-	return ret;
-}
-
-/*
- * This function fills the TxPD for AP tx packets.
- *
- * The Tx buffer received by this function should already have the
- * header space allocated for TxPD.
- *
- * This function inserts the TxPD in between interface header and actual
- * data and adjusts the buffer pointers accordingly.
- *
- * The following TxPD fields are set by this function, as required -
- *      - BSS number
- *      - Tx packet length and offset
- *      - Priority
- *      - Packet delay
- *      - Priority specific Tx control
- *      - Flags
- */
-void *mwifiex_process_uap_txpd(struct mwifiex_private *priv,
-			       struct sk_buff *skb)
-{
-	struct mwifiex_adapter *adapter = priv->adapter;
-	struct uap_txpd *txpd;
-	struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
-	int pad;
-	u16 pkt_type, pkt_offset;
-	int hroom = (priv->adapter->iface_type == MWIFIEX_USB) ? 0 :
-		       INTF_HEADER_LEN;
-
-	if (!skb->len) {
-		mwifiex_dbg(adapter, ERROR,
-			    "Tx: bad packet length: %d\n", skb->len);
-		tx_info->status_code = -1;
-		return skb->data;
-	}
-
-	BUG_ON(skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN);
-
-	pkt_type = mwifiex_is_skb_mgmt_frame(skb) ? PKT_TYPE_MGMT : 0;
-
-	pad = ((void *)skb->data - (sizeof(*txpd) + hroom) - NULL) &
-			(MWIFIEX_DMA_ALIGN_SZ - 1);
-
-	skb_push(skb, sizeof(*txpd) + pad);
-
-	txpd = (struct uap_txpd *)skb->data;
-	memset(txpd, 0, sizeof(*txpd));
-	txpd->bss_num = priv->bss_num;
-	txpd->bss_type = priv->bss_type;
-	txpd->tx_pkt_length = cpu_to_le16((u16)(skb->len - (sizeof(*txpd) +
-						pad)));
-	txpd->priority = (u8)skb->priority;
-
-	txpd->pkt_delay_2ms = mwifiex_wmm_compute_drv_pkt_delay(priv, skb);
-
-	if (tx_info->flags & MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS ||
-	    tx_info->flags & MWIFIEX_BUF_FLAG_ACTION_TX_STATUS) {
-		txpd->tx_token_id = tx_info->ack_frame_id;
-		txpd->flags |= MWIFIEX_TXPD_FLAGS_REQ_TX_STATUS;
-	}
-
-	if (txpd->priority < ARRAY_SIZE(priv->wmm.user_pri_pkt_tx_ctrl))
-		/*
-		 * Set the priority specific tx_control field, setting of 0 will
-		 * cause the default value to be used later in this function.
-		 */
-		txpd->tx_control =
-		    cpu_to_le32(priv->wmm.user_pri_pkt_tx_ctrl[txpd->priority]);
-
-	/* Offset of actual data */
-	pkt_offset = sizeof(*txpd) + pad;
-	if (pkt_type == PKT_TYPE_MGMT) {
-		/* Set the packet type and add header for management frame */
-		txpd->tx_pkt_type = cpu_to_le16(pkt_type);
-		pkt_offset += MWIFIEX_MGMT_FRAME_HEADER_SIZE;
-	}
-
-	txpd->tx_pkt_offset = cpu_to_le16(pkt_offset);
-
-	/* make space for INTF_HEADER_LEN */
-	skb_push(skb, hroom);
-
-	if (!txpd->tx_control)
-		/* TxCtrl set by user or default */
-		txpd->tx_control = cpu_to_le32(priv->pkt_tx_ctrl);
-
-	return skb->data;
-}