/*
- *
* Copyright (C) 2002 Intersil Americas Inc.
* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
* This program is free software; you can redistribute it and/or modify
*
*/
-#include <linux/version.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
+#include "prismcompat.h"
#include "isl_38xx.h"
#include "islpci_eth.h"
#include "islpci_mgt.h"
/* read the index of the first fragment to be freed */
index = priv->free_data_tx % ISL38XX_CB_TX_QSIZE;
- /* check for holes in the arrays caused by multi fragment frames
+ /* check for holes in the arrays caused by multi fragment frames
* searching for the last fragment of a frame */
if (priv->pci_map_tx_address[index] != (dma_addr_t) NULL) {
/* entry is the last fragment of a frame
/* lock the driver code */
spin_lock_irqsave(&priv->slock, flags);
- /* determine the amount of fragments needed to store the frame */
-
- frame_size = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
- if (init_wds)
- frame_size += 6;
-
/* check whether the destination queue has enough fragments for the frame */
curr_frag = le32_to_cpu(cb->driver_curr_frag[ISL38XX_CB_TX_DATA_LQ]);
- if (curr_frag - priv->free_data_tx >= ISL38XX_CB_TX_QSIZE) {
+ if (unlikely(curr_frag - priv->free_data_tx >= ISL38XX_CB_TX_QSIZE)) {
printk(KERN_ERR "%s: transmit device queue full when awake\n",
ndev->name);
netif_stop_queue(ndev);
/* Check alignment and WDS frame formatting. The start of the packet should
* be aligned on a 4-byte boundary. If WDS is enabled add another 6 bytes
* and add WDS address information */
- if (((long) skb->data & 0x03) | init_wds) {
+ if (likely(((long) skb->data & 0x03) | init_wds)) {
/* get the number of bytes to add and re-allign */
offset = (4 - (long) skb->data) & 0x03;
offset += init_wds ? 6 : 0;
} else {
newskb =
dev_alloc_skb(init_wds ? skb->len + 6 : skb->len);
+ if (unlikely(newskb == NULL)) {
+ printk(KERN_ERR "%s: Cannot allocate skb\n",
+ ndev->name);
+ err = -ENOMEM;
+ goto drop_free;
+ }
newskb_offset = (4 - (long) newskb->data) & 0x03;
/* Check if newskb->data is aligned */
#endif
newskb->dev = skb->dev;
- dev_kfree_skb(skb);
+ dev_kfree_skb_irq(skb);
skb = newskb;
}
}
pci_map_address = pci_map_single(priv->pdev,
(void *) skb->data, skb->len,
PCI_DMA_TODEVICE);
- if (pci_map_address == 0) {
+ if (unlikely(pci_map_address == 0)) {
printk(KERN_WARNING "%s: cannot map buffer to PCI\n",
ndev->name);
/* store the skb address for future freeing */
priv->data_low_tx[index] = skb;
/* set the proper fragment start address and size information */
+ frame_size = skb->len;
fragment->size = cpu_to_le16(frame_size);
- fragment->flags = cpu_to_le16(0); /* set to 1 if more fragments */
+ fragment->flags = cpu_to_le16(0); /* set to 1 if more fragments */
fragment->address = cpu_to_le32(pci_map_address);
curr_frag++;
cb->driver_curr_frag[ISL38XX_CB_TX_DATA_LQ] = cpu_to_le32(curr_frag);
if (curr_frag - priv->free_data_tx + ISL38XX_MIN_QTHRESHOLD
- > ISL38XX_CB_TX_QSIZE) {
+ > ISL38XX_CB_TX_QSIZE) {
/* stop sends from upper layers */
netif_stop_queue(ndev);
priv->data_low_tx_full = 1;
}
+ /* set the transmission time */
+ ndev->trans_start = jiffies;
+ priv->statistics.tx_packets++;
+ priv->statistics.tx_bytes += skb->len;
+
/* trigger the device */
islpci_trigger(priv);
/* unlock the driver code */
spin_unlock_irqrestore(&priv->slock, flags);
- /* set the transmission time */
- ndev->trans_start = jiffies;
- priv->statistics.tx_packets++;
- priv->statistics.tx_bytes += skb->len;
-
return 0;
- drop_free:
- /* free the skbuf structure before aborting */
- dev_kfree_skb(skb);
- skb = NULL;
-
+ drop_free:
priv->statistics.tx_dropped++;
spin_unlock_irqrestore(&priv->slock, flags);
+ dev_kfree_skb(skb);
return err;
}
* header and without the FCS. But there a is a bit that
* indicates if the packet is corrupted :-) */
struct rfmon_header *hdr = (struct rfmon_header *) (*skb)->data;
+
if (hdr->flags & 0x01)
/* This one is bad. Drop it ! */
return -1;
if (priv->ndev->type == ARPHRD_IEEE80211_PRISM) {
struct avs_80211_1_header *avs;
/* extract the relevant data from the header */
- u32 clock = hdr->clock;
+ u32 clock = le32_to_cpu(hdr->clock);
u8 rate = hdr->rate;
- u16 freq = be16_to_cpu(hdr->freq);
+ u16 freq = le16_to_cpu(hdr->freq);
u8 rssi = hdr->rssi;
skb_pull(*skb, sizeof (struct rfmon_header));
avs_80211_1_header),
0, GFP_ATOMIC);
if (newskb) {
- kfree_skb(*skb);
+ dev_kfree_skb_irq(*skb);
*skb = newskb;
} else
return -1;
sizeof (struct
avs_80211_1_header));
- avs->version = htonl(P80211CAPTURE_VERSION);
- avs->length = htonl(sizeof (struct avs_80211_1_header));
- avs->mactime = __cpu_to_be64(clock);
- avs->hosttime = __cpu_to_be64(jiffies);
- avs->phytype = htonl(6); /*OFDM: 6 for (g), 8 for (a) */
- avs->channel = htonl(channel_of_freq(freq));
- avs->datarate = htonl(rate * 5);
- avs->antenna = htonl(0); /*unknown */
- avs->priority = htonl(0); /*unknown */
- avs->ssi_type = htonl(2); /*2: dBm, 3: raw RSSI */
- avs->ssi_signal = htonl(rssi);
- avs->ssi_noise = htonl(priv->local_iwstatistics.qual.noise); /*better than 'undefined', I assume */
- avs->preamble = htonl(0); /*unknown */
- avs->encoding = htonl(0); /*unknown */
+ avs->version = cpu_to_be32(P80211CAPTURE_VERSION);
+ avs->length = cpu_to_be32(sizeof (struct avs_80211_1_header));
+ avs->mactime = cpu_to_be64(le64_to_cpu(clock));
+ avs->hosttime = cpu_to_be64(jiffies);
+ avs->phytype = cpu_to_be32(6); /*OFDM: 6 for (g), 8 for (a) */
+ avs->channel = cpu_to_be32(channel_of_freq(freq));
+ avs->datarate = cpu_to_be32(rate * 5);
+ avs->antenna = cpu_to_be32(0); /*unknown */
+ avs->priority = cpu_to_be32(0); /*unknown */
+ avs->ssi_type = cpu_to_be32(3); /*2: dBm, 3: raw RSSI */
+ avs->ssi_signal = cpu_to_be32(rssi & 0x7f);
+ avs->ssi_noise = cpu_to_be32(priv->local_iwstatistics.qual.noise); /*better than 'undefined', I assume */
+ avs->preamble = cpu_to_be32(0); /*unknown */
+ avs->encoding = cpu_to_be32(0); /*unknown */
} else
skb_pull(*skb, sizeof (struct rfmon_header));
skb->dev = ndev;
/* take care of monitor mode and spy monitoring. */
- if (priv->iw_mode == IW_MODE_MONITOR)
+ if (unlikely(priv->iw_mode == IW_MODE_MONITOR))
discard = islpci_monitor_rx(priv, &skb);
else {
- if (skb->data[2 * ETH_ALEN] == 0) {
+ if (unlikely(skb->data[2 * ETH_ALEN] == 0)) {
/* The packet has a rx_annex. Read it for spy monitoring, Then
* remove it, while keeping the 2 leading MAC addr.
*/
struct rx_annex_header *annex =
(struct rx_annex_header *) skb->data;
wstats.level = annex->rfmon.rssi;
- /* The noise value can be a bit outdated if nobody's
+ /* The noise value can be a bit outdated if nobody's
* reading wireless stats... */
wstats.noise = priv->local_iwstatistics.qual.noise;
wstats.qual = wstats.level - wstats.noise;
skb->data[0], skb->data[1], skb->data[2], skb->data[3],
skb->data[4], skb->data[5]);
#endif
- if (discard) {
- dev_kfree_skb(skb);
+ if (unlikely(discard)) {
+ dev_kfree_skb_irq(skb);
skb = NULL;
} else
netif_rx(skb);
index - priv->free_data_rx < ISL38XX_CB_RX_QSIZE) {
/* allocate an sk_buff for received data frames storage
* include any required allignment operations */
- if (skb = dev_alloc_skb(MAX_FRAGMENT_SIZE_RX + 2), skb == NULL) {
+ skb = dev_alloc_skb(MAX_FRAGMENT_SIZE_RX + 2);
+ if (unlikely(skb == NULL)) {
/* error allocating an sk_buff structure elements */
DEBUG(SHOW_ERROR_MESSAGES, "Error allocating skb \n");
break;
}
+ skb_reserve(skb, (4 - (long) skb->data) & 0x03);
/* store the new skb structure pointer */
index = index % ISL38XX_CB_RX_QSIZE;
priv->data_low_rx[index] = skb;
pci_map_single(priv->pdev, (void *) skb->data,
MAX_FRAGMENT_SIZE_RX + 2,
PCI_DMA_FROMDEVICE);
- if (priv->pci_map_rx_address[index] == (dma_addr_t) NULL) {
+ if (unlikely(priv->pci_map_rx_address[index] == (dma_addr_t) NULL)) {
/* error mapping the buffer to device accessable memory address */
DEBUG(SHOW_ERROR_MESSAGES,
"Error mapping DMA address\n");
/* free the skbuf structure before aborting */
- dev_kfree_skb((struct sk_buff *) skb);
+ dev_kfree_skb_irq((struct sk_buff *) skb);
skb = NULL;
break;
}
/* update the fragment address */
- control_block->rx_data_low[index].address = cpu_to_le32((u32)
- priv->
- pci_map_rx_address
- [index]);
+ control_block->rx_data_low[index].address =
+ cpu_to_le32((u32)priv->pci_map_rx_address[index]);
wmb();
/* increment the driver read pointer */
}
void
-islpci_do_reset_and_wake(void *data)
+islpci_do_reset_and_wake(struct work_struct *work)
{
- islpci_private *priv = (islpci_private *) data;
- islpci_reset(priv, 1);
- netif_wake_queue(priv->ndev);
- priv->reset_task_pending = 0;
+ islpci_private *priv = container_of(work, islpci_private, reset_task);
+
+ islpci_reset(priv, 1);
+ priv->reset_task_pending = 0;
+ smp_wmb();
+ netif_wake_queue(priv->ndev);
}
void
statistics->tx_errors++;
if (!priv->reset_task_pending) {
- priv->reset_task_pending = 1;
+ printk(KERN_WARNING
+ "%s: tx_timeout, scheduling reset", ndev->name);
netif_stop_queue(ndev);
+ priv->reset_task_pending = 1;
schedule_work(&priv->reset_task);
+ } else {
+ printk(KERN_WARNING
+ "%s: tx_timeout, waiting for reset", ndev->name);
}
-
- return;
}
git://git.onelab.eu / linux-2.6.git / blobdiff