diff options
Diffstat (limited to 'drivers/net/wireless/libertas/tx.c')
| -rw-r--r-- | drivers/net/wireless/libertas/tx.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/drivers/net/wireless/libertas/tx.c b/drivers/net/wireless/libertas/tx.c deleted file mode 100644 index c025f9c18..000000000 --- a/drivers/net/wireless/libertas/tx.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * This file contains the handling of TX in wlan driver. - */ -#include <linux/hardirq.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/sched.h> -#include <linux/export.h> -#include <net/cfg80211.h> - -#include "host.h" -#include "radiotap.h" -#include "decl.h" -#include "defs.h" -#include "dev.h" -#include "mesh.h" - -/** - * convert_radiotap_rate_to_mv - converts Tx/Rx rates from IEEE80211_RADIOTAP_RATE - * units (500 Kb/s) into Marvell WLAN format (see Table 8 in Section 3.2.1) - * - * @rate: Input rate - * returns: Output Rate (0 if invalid) - */ -static u32 convert_radiotap_rate_to_mv(u8 rate) -{ - switch (rate) { - case 2: /* 1 Mbps */ - return 0 | (1 << 4); - case 4: /* 2 Mbps */ - return 1 | (1 << 4); - case 11: /* 5.5 Mbps */ - return 2 | (1 << 4); - case 22: /* 11 Mbps */ - return 3 | (1 << 4); - case 12: /* 6 Mbps */ - return 4 | (1 << 4); - case 18: /* 9 Mbps */ - return 5 | (1 << 4); - case 24: /* 12 Mbps */ - return 6 | (1 << 4); - case 36: /* 18 Mbps */ - return 7 | (1 << 4); - case 48: /* 24 Mbps */ - return 8 | (1 << 4); - case 72: /* 36 Mbps */ - return 9 | (1 << 4); - case 96: /* 48 Mbps */ - return 10 | (1 << 4); - case 108: /* 54 Mbps */ - return 11 | (1 << 4); - } - return 0; -} - -/** - * lbs_hard_start_xmit - checks the conditions and sends packet to IF - * layer if everything is ok - * - * @skb: A pointer to skb which includes TX packet - * @dev: A pointer to the &struct net_device - * returns: 0 or -1 - */ -netdev_tx_t lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - unsigned long flags; - struct lbs_private *priv = dev->ml_priv; - struct txpd *txpd; - char *p802x_hdr; - uint16_t pkt_len; - netdev_tx_t ret = NETDEV_TX_OK; - - lbs_deb_enter(LBS_DEB_TX); - - /* We need to protect against the queues being restarted before - we get round to stopping them */ - spin_lock_irqsave(&priv->driver_lock, flags); - - if (priv->surpriseremoved) - goto free; - - if (!skb->len || (skb->len > MRVDRV_ETH_TX_PACKET_BUFFER_SIZE)) { - lbs_deb_tx("tx err: skb length %d 0 or > %zd\n", - skb->len, MRVDRV_ETH_TX_PACKET_BUFFER_SIZE); - /* We'll never manage to send this one; drop it and return 'OK' */ - - dev->stats.tx_dropped++; - dev->stats.tx_errors++; - goto free; - } - - - netif_stop_queue(priv->dev); - if (priv->mesh_dev) - netif_stop_queue(priv->mesh_dev); - - if (priv->tx_pending_len) { - /* This can happen if packets come in on the mesh and eth - device simultaneously -- there's no mutual exclusion on - hard_start_xmit() calls between devices. */ - lbs_deb_tx("Packet on %s while busy\n", dev->name); - ret = NETDEV_TX_BUSY; - goto unlock; - } - - priv->tx_pending_len = -1; - spin_unlock_irqrestore(&priv->driver_lock, flags); - - lbs_deb_hex(LBS_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100)); - - txpd = (void *)priv->tx_pending_buf; - memset(txpd, 0, sizeof(struct txpd)); - - p802x_hdr = skb->data; - pkt_len = skb->len; - - if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) { - struct tx_radiotap_hdr *rtap_hdr = (void *)skb->data; - - /* set txpd fields from the radiotap header */ - txpd->tx_control = cpu_to_le32(convert_radiotap_rate_to_mv(rtap_hdr->rate)); - - /* skip the radiotap header */ - p802x_hdr += sizeof(*rtap_hdr); - pkt_len -= sizeof(*rtap_hdr); - - /* copy destination address from 802.11 header */ - memcpy(txpd->tx_dest_addr_high, p802x_hdr + 4, ETH_ALEN); - } else { - /* copy destination address from 802.3 header */ - memcpy(txpd->tx_dest_addr_high, p802x_hdr, ETH_ALEN); - } - - txpd->tx_packet_length = cpu_to_le16(pkt_len); - txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd)); - - lbs_mesh_set_txpd(priv, dev, txpd); - - lbs_deb_hex(LBS_DEB_TX, "txpd", (u8 *) &txpd, sizeof(struct txpd)); - - lbs_deb_hex(LBS_DEB_TX, "Tx Data", (u8 *) p802x_hdr, le16_to_cpu(txpd->tx_packet_length)); - - memcpy(&txpd[1], p802x_hdr, le16_to_cpu(txpd->tx_packet_length)); - - spin_lock_irqsave(&priv->driver_lock, flags); - priv->tx_pending_len = pkt_len + sizeof(struct txpd); - - lbs_deb_tx("%s lined up packet\n", __func__); - - dev->stats.tx_packets++; - dev->stats.tx_bytes += skb->len; - - if (priv->wdev->iftype == NL80211_IFTYPE_MONITOR) { - /* Keep the skb to echo it back once Tx feedback is - received from FW */ - skb_orphan(skb); - - /* Keep the skb around for when we get feedback */ - priv->currenttxskb = skb; - } else { - free: - dev_kfree_skb_any(skb); - } - - unlock: - spin_unlock_irqrestore(&priv->driver_lock, flags); - wake_up(&priv->waitq); - - lbs_deb_leave_args(LBS_DEB_TX, "ret %d", ret); - return ret; -} - -/** - * lbs_send_tx_feedback - sends to the host the last transmitted packet, - * filling the radiotap headers with transmission information. - * - * @priv: A pointer to &struct lbs_private structure - * @try_count: A 32-bit value containing transmission retry status. - * - * returns: void - */ -void lbs_send_tx_feedback(struct lbs_private *priv, u32 try_count) -{ - struct tx_radiotap_hdr *radiotap_hdr; - - if (priv->wdev->iftype != NL80211_IFTYPE_MONITOR || - priv->currenttxskb == NULL) - return; - - radiotap_hdr = (struct tx_radiotap_hdr *)priv->currenttxskb->data; - - radiotap_hdr->data_retries = try_count ? - (1 + priv->txretrycount - try_count) : 0; - - priv->currenttxskb->protocol = eth_type_trans(priv->currenttxskb, - priv->dev); - netif_rx(priv->currenttxskb); - - priv->currenttxskb = NULL; - - if (priv->connect_status == LBS_CONNECTED) - netif_wake_queue(priv->dev); - - if (priv->mesh_dev && netif_running(priv->mesh_dev)) - netif_wake_queue(priv->mesh_dev); -} -EXPORT_SYMBOL_GPL(lbs_send_tx_feedback); |