From e039fa4a4195ac4ee895e6f3d1334beed63256fe Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 15 May 2008 12:55:29 +0200 Subject: mac80211: move TX info into skb->cb This patch converts mac80211 and all drivers to have transmit information and status in skb->cb rather than allocating extra memory for it and copying all the data around. To make it fit, a union is used where only data that is necessary for all steps is kept outside of the union. A number of fixes were done by Ivo, as well as the rt2x00 part of this patch. Signed-off-by: Ivo van Doorn Signed-off-by: Johannes Berg Acked-by: David S. Miller Signed-off-by: John W. Linville --- drivers/net/wireless/adm8211.c | 31 ++++++++++++++----------------- 1 file changed, 14 insertions(+), 17 deletions(-) (limited to 'drivers/net/wireless/adm8211.c') diff --git a/drivers/net/wireless/adm8211.c b/drivers/net/wireless/adm8211.c index 22db664..0ba55ba 100644 --- a/drivers/net/wireless/adm8211.c +++ b/drivers/net/wireless/adm8211.c @@ -324,7 +324,7 @@ static void adm8211_interrupt_tci(struct ieee80211_hw *dev) for (dirty_tx = priv->dirty_tx; priv->cur_tx - dirty_tx; dirty_tx++) { unsigned int entry = dirty_tx % priv->tx_ring_size; u32 status = le32_to_cpu(priv->tx_ring[entry].status); - struct ieee80211_tx_status tx_status; + struct ieee80211_tx_info *txi; struct adm8211_tx_ring_info *info; struct sk_buff *skb; @@ -334,24 +334,23 @@ static void adm8211_interrupt_tci(struct ieee80211_hw *dev) info = &priv->tx_buffers[entry]; skb = info->skb; + txi = IEEE80211_SKB_CB(skb); /* TODO: check TDES0_STATUS_TUF and TDES0_STATUS_TRO */ pci_unmap_single(priv->pdev, info->mapping, info->skb->len, PCI_DMA_TODEVICE); - memset(&tx_status, 0, sizeof(tx_status)); + memset(&txi->status, 0, sizeof(txi->status)); skb_pull(skb, sizeof(struct adm8211_tx_hdr)); memcpy(skb_push(skb, info->hdrlen), skb->cb, info->hdrlen); - memcpy(&tx_status.control, &info->tx_control, - sizeof(tx_status.control)); - if (!(tx_status.control.flags & IEEE80211_TXCTL_NO_ACK)) { + if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK)) { if (status & TDES0_STATUS_ES) - tx_status.excessive_retries = 1; + txi->status.excessive_retries = 1; else - tx_status.flags |= IEEE80211_TX_STATUS_ACK; + txi->flags |= IEEE80211_TX_STAT_ACK; } - ieee80211_tx_status_irqsafe(dev, skb, &tx_status); + ieee80211_tx_status_irqsafe(dev, skb); info->skb = NULL; } @@ -1638,7 +1637,6 @@ static void adm8211_calc_durations(int *dur, int *plcp, size_t payload_len, int /* Transmit skb w/adm8211_tx_hdr (802.11 header created by hardware) */ static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb, u16 plcp_signal, - struct ieee80211_tx_control *control, size_t hdrlen) { struct adm8211_priv *priv = dev->priv; @@ -1664,7 +1662,6 @@ static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb, priv->tx_buffers[entry].skb = skb; priv->tx_buffers[entry].mapping = mapping; - memcpy(&priv->tx_buffers[entry].tx_control, control, sizeof(*control)); priv->tx_buffers[entry].hdrlen = hdrlen; priv->tx_ring[entry].buffer1 = cpu_to_le32(mapping); @@ -1685,17 +1682,17 @@ static void adm8211_tx_raw(struct ieee80211_hw *dev, struct sk_buff *skb, } /* Put adm8211_tx_hdr on skb and transmit */ -static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb, - struct ieee80211_tx_control *control) +static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb) { struct adm8211_tx_hdr *txhdr; u16 fc; size_t payload_len, hdrlen; int plcp, dur, len, plcp_signal, short_preamble; struct ieee80211_hdr *hdr; - struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, control); + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_rate *txrate = ieee80211_get_tx_rate(dev, info); - short_preamble = !!(txrate->flags & IEEE80211_TXCTL_SHORT_PREAMBLE); + short_preamble = !!(txrate->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE); plcp_signal = txrate->bitrate; hdr = (struct ieee80211_hdr *)skb->data; @@ -1730,15 +1727,15 @@ static int adm8211_tx(struct ieee80211_hw *dev, struct sk_buff *skb, if (short_preamble) txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_SHORT_PREAMBLE); - if (control->flags & IEEE80211_TXCTL_USE_RTS_CTS) + if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_RTS); if (fc & IEEE80211_FCTL_PROTECTED) txhdr->header_control |= cpu_to_le16(ADM8211_TXHDRCTL_ENABLE_WEP_ENGINE); - txhdr->retry_limit = control->retry_limit; + txhdr->retry_limit = info->control.retry_limit; - adm8211_tx_raw(dev, skb, plcp_signal, control, hdrlen); + adm8211_tx_raw(dev, skb, plcp_signal, hdrlen); return NETDEV_TX_OK; } -- cgit v1.1