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path: root/drivers/net/wireless/prism54/islpci_eth.c
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Diffstat (limited to 'drivers/net/wireless/prism54/islpci_eth.c')
-rw-r--r--drivers/net/wireless/prism54/islpci_eth.c135
1 files changed, 61 insertions, 74 deletions
diff --git a/drivers/net/wireless/prism54/islpci_eth.c b/drivers/net/wireless/prism54/islpci_eth.c
index 5952e996049..674658f2e6e 100644
--- a/drivers/net/wireless/prism54/islpci_eth.c
+++ b/drivers/net/wireless/prism54/islpci_eth.c
@@ -1,5 +1,4 @@
/*
- *
* 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
@@ -12,19 +11,19 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
-#include <linux/version.h>
#include <linux/module.h>
+#include <linux/gfp.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
+#include <asm/byteorder.h>
#include "prismcompat.h"
#include "isl_38xx.h"
@@ -49,9 +48,9 @@ islpci_eth_cleanup_transmit(islpci_private *priv,
/* 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) {
+ if (priv->pci_map_tx_address[index]) {
/* entry is the last fragment of a frame
* free the skb structure and unmap pci memory */
skb = priv->data_low_tx[index];
@@ -73,7 +72,7 @@ islpci_eth_cleanup_transmit(islpci_private *priv,
}
}
-int
+netdev_tx_t
islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
{
islpci_private *priv = netdev_priv(ndev);
@@ -88,21 +87,14 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
unsigned long flags;
unsigned char wds_mac[6];
u32 curr_frag;
- int err = 0;
#if VERBOSE > SHOW_ERROR_MESSAGES
- DEBUG(SHOW_FUNCTION_CALLS, "islpci_eth_transmit \n");
+ DEBUG(SHOW_FUNCTION_CALLS, "islpci_eth_transmit\n");
#endif
/* 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 (unlikely(curr_frag - priv->free_data_tx >= ISL38XX_CB_TX_QSIZE)) {
@@ -114,15 +106,13 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
isl38xx_w32_flush(priv->device_base, ISL38XX_DEV_INT_UPDATE,
ISL38XX_DEV_INT_REG);
udelay(ISL38XX_WRITEIO_DELAY);
-
- err = -EBUSY;
goto drop_free;
}
/* 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 (likely(((long) skb->data & 0x03) | init_wds)) {
- /* get the number of bytes to add and re-allign */
+ /* get the number of bytes to add and re-align */
offset = (4 - (long) skb->data) & 0x03;
offset += init_wds ? 6 : 0;
@@ -144,13 +134,13 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
printk("islpci_eth_transmit:wds_mac\n");
#endif
memmove(skb->data + 6, src, skb->len);
- memcpy(skb->data, wds_mac, 6);
+ skb_copy_to_linear_data(skb, wds_mac, 6);
} else {
memmove(skb->data, src, skb->len);
}
#if VERBOSE > SHOW_ERROR_MESSAGES
- DEBUG(SHOW_TRACING, "memmove %p %p %i \n", skb->data,
+ DEBUG(SHOW_TRACING, "memmove %p %p %i\n", skb->data,
src, skb->len);
#endif
} else {
@@ -159,7 +149,6 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
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;
@@ -170,13 +159,16 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
skb_put(newskb, init_wds ? skb->len + 6 : skb->len);
if (init_wds) {
- memcpy(newskb->data + 6, skb->data, skb->len);
- memcpy(newskb->data, wds_mac, 6);
+ skb_copy_from_linear_data(skb,
+ newskb->data + 6,
+ skb->len);
+ skb_copy_to_linear_data(newskb, wds_mac, 6);
#ifdef ISLPCI_ETH_DEBUG
printk("islpci_eth_transmit:wds_mac\n");
#endif
} else
- memcpy(newskb->data, skb->data, skb->len);
+ skb_copy_from_linear_data(skb, newskb->data,
+ skb->len);
#if VERBOSE > SHOW_ERROR_MESSAGES
DEBUG(SHOW_TRACING, "memcpy %p %p %i wds %i\n",
@@ -184,7 +176,7 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
#endif
newskb->dev = skb->dev;
- dev_kfree_skb(skb);
+ dev_kfree_skb_irq(skb);
skb = newskb;
}
}
@@ -201,8 +193,6 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
if (unlikely(pci_map_address == 0)) {
printk(KERN_WARNING "%s: cannot map buffer to PCI\n",
ndev->name);
-
- err = -EIO;
goto drop_free;
}
/* Place the fragment in the control block structure. */
@@ -213,6 +203,7 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
/* 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->address = cpu_to_le32(pci_map_address);
@@ -232,27 +223,22 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev)
priv->data_low_tx_full = 1;
}
+ ndev->stats.tx_packets++;
+ ndev->stats.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;
+ return NETDEV_TX_OK;
drop_free:
- /* free the skbuf structure before aborting */
- dev_kfree_skb(skb);
- skb = NULL;
-
- priv->statistics.tx_dropped++;
+ ndev->stats.tx_dropped++;
spin_unlock_irqrestore(&priv->slock, flags);
- return err;
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
}
static inline int
@@ -262,6 +248,7 @@ islpci_monitor_rx(islpci_private *priv, struct sk_buff **skb)
* 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;
@@ -293,10 +280,10 @@ islpci_monitor_rx(islpci_private *priv, struct sk_buff **skb)
(struct avs_80211_1_header *) skb_push(*skb,
sizeof (struct
avs_80211_1_header));
-
+
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->mactime = cpu_to_be64(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));
@@ -312,7 +299,7 @@ islpci_monitor_rx(islpci_private *priv, struct sk_buff **skb)
skb_pull(*skb, sizeof (struct rfmon_header));
(*skb)->protocol = htons(ETH_P_802_2);
- (*skb)->mac.raw = (*skb)->data;
+ skb_reset_mac_header(*skb);
(*skb)->pkt_type = PACKET_OTHERHOST;
return 0;
@@ -330,7 +317,7 @@ islpci_eth_receive(islpci_private *priv)
int discard = 0;
#if VERBOSE > SHOW_ERROR_MESSAGES
- DEBUG(SHOW_FUNCTION_CALLS, "islpci_eth_receive \n");
+ DEBUG(SHOW_FUNCTION_CALLS, "islpci_eth_receive\n");
#endif
/* the device has written an Ethernet frame in the data area
@@ -354,7 +341,7 @@ islpci_eth_receive(islpci_private *priv)
priv->pci_map_rx_address[index],
MAX_FRAGMENT_SIZE_RX + 2, PCI_DMA_FROMDEVICE);
- /* update the skb structure and allign the buffer */
+ /* update the skb structure and align the buffer */
skb_put(skb, size);
if (offset) {
/* shift the buffer allocation offset bytes to get the right frame */
@@ -383,14 +370,11 @@ islpci_eth_receive(islpci_private *priv)
DEBUG(SHOW_BUFFER_CONTENTS, "\nrx %p ", skb->data);
display_buffer((char *) skb->data, skb->len);
#endif
-
- /* do some additional sk_buff and network layer parameters */
- skb->dev = ndev;
-
/* take care of monitor mode and spy monitoring. */
- if (unlikely(priv->iw_mode == IW_MODE_MONITOR))
+ if (unlikely(priv->iw_mode == IW_MODE_MONITOR)) {
+ skb->dev = ndev;
discard = islpci_monitor_rx(priv, &skb);
- else {
+ } else {
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.
@@ -399,7 +383,7 @@ islpci_eth_receive(islpci_private *priv)
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;
@@ -407,15 +391,17 @@ islpci_eth_receive(islpci_private *priv)
/* Update spy records */
wireless_spy_update(ndev, annex->addr2, &wstats);
- memcpy(skb->data + sizeof (struct rfmon_header),
- skb->data, 2 * ETH_ALEN);
+ skb_copy_from_linear_data(skb,
+ (skb->data +
+ sizeof(struct rfmon_header)),
+ 2 * ETH_ALEN);
skb_pull(skb, sizeof (struct rfmon_header));
}
skb->protocol = eth_type_trans(skb, ndev);
}
skb->ip_summed = CHECKSUM_NONE;
- priv->statistics.rx_packets++;
- priv->statistics.rx_bytes += size;
+ ndev->stats.rx_packets++;
+ ndev->stats.rx_bytes += size;
/* deliver the skb to the network layer */
#ifdef ISLPCI_ETH_DEBUG
@@ -443,7 +429,7 @@ islpci_eth_receive(islpci_private *priv)
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");
+ DEBUG(SHOW_ERROR_MESSAGES, "Error allocating skb\n");
break;
}
skb_reserve(skb, (4 - (long) skb->data) & 0x03);
@@ -462,26 +448,24 @@ islpci_eth_receive(islpci_private *priv)
pci_map_single(priv->pdev, (void *) skb->data,
MAX_FRAGMENT_SIZE_RX + 2,
PCI_DMA_FROMDEVICE);
- if (unlikely(priv->pci_map_rx_address[index] == (dma_addr_t) NULL)) {
- /* error mapping the buffer to device accessable memory address */
+ if (unlikely(!priv->pci_map_rx_address[index])) {
+ /* error mapping the buffer to device accessible memory address */
DEBUG(SHOW_ERROR_MESSAGES,
"Error mapping DMA address\n");
/* free the skbuf structure before aborting */
- dev_kfree_skb_irq((struct sk_buff *) skb);
+ dev_kfree_skb_irq(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 */
- add_le32p((u32 *) &control_block->
- driver_curr_frag[ISL38XX_CB_RX_DATA_LQ], 1);
+ le32_add_cpu(&control_block->
+ driver_curr_frag[ISL38XX_CB_RX_DATA_LQ], 1);
}
/* trigger the device */
@@ -491,29 +475,32 @@ islpci_eth_receive(islpci_private *priv)
}
void
-islpci_do_reset_and_wake(void *data)
+islpci_do_reset_and_wake(struct work_struct *work)
{
- islpci_private *priv = (islpci_private *) data;
+ islpci_private *priv = container_of(work, islpci_private, reset_task);
+
islpci_reset(priv, 1);
- netif_wake_queue(priv->ndev);
priv->reset_task_pending = 0;
+ smp_wmb();
+ netif_wake_queue(priv->ndev);
}
void
islpci_eth_tx_timeout(struct net_device *ndev)
{
islpci_private *priv = netdev_priv(ndev);
- struct net_device_stats *statistics = &priv->statistics;
/* increment the transmit error counter */
- statistics->tx_errors++;
+ ndev->stats.tx_errors++;
- printk(KERN_WARNING "%s: tx_timeout", ndev->name);
if (!priv->reset_task_pending) {
- priv->reset_task_pending = 1;
- printk(", scheduling a reset");
+ 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);
}
- printk("\n");
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 23:49:06 +0000