- 根目录:
- drivers
- staging
- wlags49_h2
- wl_netdev.c
/*******************************************************************************
* Agere Systems Inc.
* Wireless device driver for Linux (wlags49).
*
* Copyright (c) 1998-2003 Agere Systems Inc.
* All rights reserved.
* http://www.agere.com
*
* Initially developed by TriplePoint, Inc.
* http://www.triplepoint.com
*
*------------------------------------------------------------------------------
*
* This file contains handler functions registered with the net_device
* structure.
*
*------------------------------------------------------------------------------
*
* SOFTWARE LICENSE
*
* This software is provided subject to the following terms and conditions,
* which you should read carefully before using the software. Using this
* software indicates your acceptance of these terms and conditions. If you do
* not agree with these terms and conditions, do not use the software.
*
* Copyright © 2003 Agere Systems Inc.
* All rights reserved.
*
* Redistribution and use in source or binary forms, with or without
* modifications, are permitted provided that the following conditions are met:
*
* . Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following Disclaimer as comments in the code as
* well as in the documentation and/or other materials provided with the
* distribution.
*
* . Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following Disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* . Neither the name of Agere Systems Inc. nor the names of the contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Disclaimer
*
* THIS SOFTWARE IS PROVIDED AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY
* USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
* RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
******************************************************************************/
/*******************************************************************************
* include files
******************************************************************************/
#include <wl_version.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/kernel.h>
// #include <linux/sched.h>
// #include <linux/ptrace.h>
// #include <linux/slab.h>
// #include <linux/ctype.h>
// #include <linux/string.h>
//#include <linux/timer.h>
// #include <linux/interrupt.h>
// #include <linux/in.h>
// #include <linux/delay.h>
// #include <linux/skbuff.h>
// #include <asm/io.h>
// // #include <asm/bitops.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>
#include <linux/etherdevice.h>
// #include <linux/skbuff.h>
// #include <linux/if_arp.h>
// #include <linux/ioport.h>
#include <debug.h>
#include <hcf.h>
#include <dhf.h>
// #include <hcfdef.h>
#include <wl_if.h>
#include <wl_internal.h>
#include <wl_util.h>
#include <wl_priv.h>
#include <wl_main.h>
#include <wl_netdev.h>
#include <wl_wext.h>
#ifdef USE_PROFILE
#include <wl_profile.h>
#endif /* USE_PROFILE */
#ifdef BUS_PCMCIA
#include <wl_cs.h>
#endif /* BUS_PCMCIA */
#ifdef BUS_PCI
#include <wl_pci.h>
#endif /* BUS_PCI */
/*******************************************************************************
* global variables
******************************************************************************/
#if DBG
extern dbg_info_t *DbgInfo;
#endif /* DBG */
#if HCF_ENCAP
#define MTU_MAX (HCF_MAX_MSG - ETH_HLEN - 8)
#else
#define MTU_MAX (HCF_MAX_MSG - ETH_HLEN)
#endif
//static int mtu = MTU_MAX;
//MODULE_PARM(mtu, "i");
//MODULE_PARM_DESC(mtu, "MTU");
/*******************************************************************************
* macros
******************************************************************************/
#define BLOCK_INPUT(buf, len) \
desc->buf_addr = buf; \
desc->BUF_SIZE = len; \
status = hcf_rcv_msg(&(lp->hcfCtx), desc, 0)
#define BLOCK_INPUT_DMA(buf, len) memcpy( buf, desc_next->buf_addr, pktlen )
/*******************************************************************************
* function prototypes
******************************************************************************/
/*******************************************************************************
* wl_init()
*******************************************************************************
*
* DESCRIPTION:
*
* We never need to do anything when a "Wireless" device is "initialized"
* by the net software, because we only register already-found cards.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure
*
* RETURNS:
*
* 0 on success
* errno value otherwise
*
******************************************************************************/
int wl_init( struct net_device *dev )
{
// unsigned long flags;
// struct wl_private *lp = wl_priv(dev);
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_init" );
DBG_ENTER( DbgInfo );
DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
/* Nothing to do, but grab the spinlock anyway just in case we ever need
this routine */
// wl_lock( lp, &flags );
// wl_unlock( lp, &flags );
DBG_LEAVE( DbgInfo );
return 0;
} // wl_init
/*============================================================================*/
/*******************************************************************************
* wl_config()
*******************************************************************************
*
* DESCRIPTION:
*
* Implement the SIOCSIFMAP interface.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure
* map - a pointer to the device's ifmap structure
*
* RETURNS:
*
* 0 on success
* errno otherwise
*
******************************************************************************/
int wl_config( struct net_device *dev, struct ifmap *map )
{
DBG_FUNC( "wl_config" );
DBG_ENTER( DbgInfo );
DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
DBG_PARAM( DbgInfo, "map", "0x%p", map );
/* The only thing we care about here is a port change. Since this not needed,
ignore the request. */
DBG_TRACE(DbgInfo, "%s: %s called.\n", dev->name, __func__);
DBG_LEAVE( DbgInfo );
return 0;
} // wl_config
/*============================================================================*/
/*******************************************************************************
* wl_stats()
*******************************************************************************
*
* DESCRIPTION:
*
* Return the current device statistics.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure
*
* RETURNS:
*
* a pointer to a net_device_stats structure containing the network
* statistics.
*
******************************************************************************/
struct net_device_stats *wl_stats( struct net_device *dev )
{
#ifdef USE_WDS
int count;
#endif /* USE_WDS */
unsigned long flags;
struct net_device_stats *pStats;
struct wl_private *lp = wl_priv(dev);
/*------------------------------------------------------------------------*/
//DBG_FUNC( "wl_stats" );
//DBG_ENTER( DbgInfo );
//DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
pStats = NULL;
wl_lock( lp, &flags );
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
wl_unlock( lp, &flags );
//DBG_LEAVE( DbgInfo );
return NULL;
}
#endif /* USE_RTS */
/* Return the statistics for the appropriate device */
#ifdef USE_WDS
for( count = 0; count < NUM_WDS_PORTS; count++ ) {
if( dev == lp->wds_port[count].dev ) {
pStats = &( lp->wds_port[count].stats );
}
}
#endif /* USE_WDS */
/* If pStats is still NULL, then the device is not a WDS port */
if( pStats == NULL ) {
pStats = &( lp->stats );
}
wl_unlock( lp, &flags );
//DBG_LEAVE( DbgInfo );
return pStats;
} // wl_stats
/*============================================================================*/
/*******************************************************************************
* wl_open()
*******************************************************************************
*
* DESCRIPTION:
*
* Open the device.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure
*
* RETURNS:
*
* 0 on success
* errno otherwise
*
******************************************************************************/
int wl_open(struct net_device *dev)
{
int status = HCF_SUCCESS;
struct wl_private *lp = wl_priv(dev);
unsigned long flags;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_open" );
DBG_ENTER( DbgInfo );
wl_lock( lp, &flags );
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
DBG_TRACE( DbgInfo, "Skipping device open, in RTS mode\n" );
wl_unlock( lp, &flags );
DBG_LEAVE( DbgInfo );
return -EIO;
}
#endif /* USE_RTS */
#ifdef USE_PROFILE
parse_config( dev );
#endif
if( lp->portState == WVLAN_PORT_STATE_DISABLED ) {
DBG_TRACE( DbgInfo, "Enabling Port 0\n" );
status = wl_enable( lp );
if( status != HCF_SUCCESS ) {
DBG_TRACE( DbgInfo, "Enable port 0 failed: 0x%x\n", status );
}
}
// Holding the lock too long, make a gap to allow other processes
wl_unlock(lp, &flags);
wl_lock( lp, &flags );
if ( strlen( lp->fw_image_filename ) ) {
DBG_TRACE( DbgInfo, ";???? Kludgy way to force a download\n" );
status = wl_go( lp );
} else {
status = wl_apply( lp );
}
// Holding the lock too long, make a gap to allow other processes
wl_unlock(lp, &flags);
wl_lock( lp, &flags );
if( status != HCF_SUCCESS ) {
// Unsuccessful, try reset of the card to recover
status = wl_reset( dev );
}
// Holding the lock too long, make a gap to allow other processes
wl_unlock(lp, &flags);
wl_lock( lp, &flags );
if( status == HCF_SUCCESS ) {
netif_carrier_on( dev );
WL_WDS_NETIF_CARRIER_ON( lp );
lp->is_handling_int = WL_HANDLING_INT; // Start handling interrupts
wl_act_int_on( lp );
netif_start_queue( dev );
WL_WDS_NETIF_START_QUEUE( lp );
} else {
wl_hcf_error( dev, status ); /* Report the error */
netif_device_detach( dev ); /* Stop the device and queue */
}
wl_unlock( lp, &flags );
DBG_LEAVE( DbgInfo );
return status;
} // wl_open
/*============================================================================*/
/*******************************************************************************
* wl_close()
*******************************************************************************
*
* DESCRIPTION:
*
* Close the device.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure
*
* RETURNS:
*
* 0 on success
* errno otherwise
*
******************************************************************************/
int wl_close( struct net_device *dev )
{
struct wl_private *lp = wl_priv(dev);
unsigned long flags;
/*------------------------------------------------------------------------*/
DBG_FUNC("wl_close");
DBG_ENTER(DbgInfo);
DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
/* Mark the adapter as busy */
netif_stop_queue( dev );
WL_WDS_NETIF_STOP_QUEUE( lp );
netif_carrier_off( dev );
WL_WDS_NETIF_CARRIER_OFF( lp );
/* Shutdown the adapter:
Disable adapter interrupts
Stop Tx/Rx
Update statistics
Set low power mode
*/
wl_lock( lp, &flags );
wl_act_int_off( lp );
lp->is_handling_int = WL_NOT_HANDLING_INT; // Stop handling interrupts
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
DBG_TRACE( DbgInfo, "Skipping device close, in RTS mode\n" );
wl_unlock( lp, &flags );
DBG_LEAVE( DbgInfo );
return -EIO;
}
#endif /* USE_RTS */
/* Disable the ports */
wl_disable( lp );
wl_unlock( lp, &flags );
DBG_LEAVE( DbgInfo );
return 0;
} // wl_close
/*============================================================================*/
static void wl_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
strlcpy(info->version, DRV_VERSION_STR, sizeof(info->version));
// strlcpy(info.fw_version, priv->fw_name,
// sizeof(info.fw_version));
if (dev->dev.parent) {
dev_set_name(dev->dev.parent, "%s", info->bus_info);
//strlcpy(info->bus_info, dev->dev.parent->bus_id,
// sizeof(info->bus_info));
} else {
snprintf(info->bus_info, sizeof(info->bus_info),
"PCMCIA FIXME");
// "PCMCIA 0x%lx", priv->hw.iobase);
}
} // wl_get_drvinfo
static struct ethtool_ops wl_ethtool_ops = {
.get_drvinfo = wl_get_drvinfo,
.get_link = ethtool_op_get_link,
};
/*******************************************************************************
* wl_ioctl()
*******************************************************************************
*
* DESCRIPTION:
*
* The IOCTL handler for the device.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device struct.
* rq - a pointer to the IOCTL request buffer.
* cmd - the IOCTL command code.
*
* RETURNS:
*
* 0 on success
* errno value otherwise
*
******************************************************************************/
int wl_ioctl( struct net_device *dev, struct ifreq *rq, int cmd )
{
struct wl_private *lp = wl_priv(dev);
unsigned long flags;
int ret = 0;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_ioctl" );
DBG_ENTER(DbgInfo);
DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
DBG_PARAM(DbgInfo, "rq", "0x%p", rq);
DBG_PARAM(DbgInfo, "cmd", "0x%04x", cmd);
wl_lock( lp, &flags );
wl_act_int_off( lp );
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
/* Handle any RTS IOCTL here */
if( cmd == WL_IOCTL_RTS ) {
DBG_TRACE( DbgInfo, "IOCTL: WL_IOCTL_RTS\n" );
ret = wvlan_rts( (struct rtsreq *)rq, dev->base_addr );
} else {
DBG_TRACE( DbgInfo, "IOCTL not supported in RTS mode: 0x%X\n", cmd );
ret = -EOPNOTSUPP;
}
goto out_act_int_on_unlock;
}
#endif /* USE_RTS */
/* Only handle UIL IOCTL requests when the UIL has the system blocked. */
if( !(( lp->flags & WVLAN2_UIL_BUSY ) && ( cmd != WVLAN2_IOCTL_UIL ))) {
#ifdef USE_UIL
struct uilreq *urq = (struct uilreq *)rq;
#endif /* USE_UIL */
switch( cmd ) {
// ================== Private IOCTLs (up to 16) ==================
#ifdef USE_UIL
case WVLAN2_IOCTL_UIL:
DBG_TRACE( DbgInfo, "IOCTL: WVLAN2_IOCTL_UIL\n" );
ret = wvlan_uil( urq, lp );
break;
#endif /* USE_UIL */
default:
DBG_TRACE(DbgInfo, "IOCTL CODE NOT SUPPORTED: 0x%X\n", cmd );
ret = -EOPNOTSUPP;
break;
}
} else {
DBG_WARNING( DbgInfo, "DEVICE IS BUSY, CANNOT PROCESS REQUEST\n" );
ret = -EBUSY;
}
#ifdef USE_RTS
out_act_int_on_unlock:
#endif /* USE_RTS */
wl_act_int_on( lp );
wl_unlock( lp, &flags );
DBG_LEAVE( DbgInfo );
return ret;
} // wl_ioctl
/*============================================================================*/
#ifdef CONFIG_NET_POLL_CONTROLLER
void wl_poll(struct net_device *dev)
{
struct wl_private *lp = wl_priv(dev);
unsigned long flags;
struct pt_regs regs;
wl_lock( lp, &flags );
wl_isr(dev->irq, dev, ®s);
wl_unlock( lp, &flags );
}
#endif
/*******************************************************************************
* wl_tx_timeout()
*******************************************************************************
*
* DESCRIPTION:
*
* The handler called when, for some reason, a Tx request is not completed.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device struct.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
void wl_tx_timeout( struct net_device *dev )
{
#ifdef USE_WDS
int count;
#endif /* USE_WDS */
unsigned long flags;
struct wl_private *lp = wl_priv(dev);
struct net_device_stats *pStats = NULL;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_tx_timeout" );
DBG_ENTER( DbgInfo );
DBG_WARNING( DbgInfo, "%s: Transmit timeout.\n", dev->name );
wl_lock( lp, &flags );
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
DBG_TRACE( DbgInfo, "Skipping tx_timeout handler, in RTS mode\n" );
wl_unlock( lp, &flags );
DBG_LEAVE( DbgInfo );
return;
}
#endif /* USE_RTS */
/* Figure out which device (the "root" device or WDS port) this timeout
is for */
#ifdef USE_WDS
for( count = 0; count < NUM_WDS_PORTS; count++ ) {
if( dev == lp->wds_port[count].dev ) {
pStats = &( lp->wds_port[count].stats );
/* Break the loop so that we can use the counter to access WDS
information in the private structure */
break;
}
}
#endif /* USE_WDS */
/* If pStats is still NULL, then the device is not a WDS port */
if( pStats == NULL ) {
pStats = &( lp->stats );
}
/* Accumulate the timeout error */
pStats->tx_errors++;
wl_unlock( lp, &flags );
DBG_LEAVE( DbgInfo );
} // wl_tx_timeout
/*============================================================================*/
/*******************************************************************************
* wl_send()
*******************************************************************************
*
* DESCRIPTION:
*
* The routine which performs data transmits.
*
* PARAMETERS:
*
* lp - a pointer to the device's wl_private struct.
*
* RETURNS:
*
* 0 on success
* 1 on error
*
******************************************************************************/
int wl_send( struct wl_private *lp )
{
int status;
DESC_STRCT *desc;
WVLAN_LFRAME *txF = NULL;
struct list_head *element;
int len;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_send" );
if( lp == NULL ) {
DBG_ERROR( DbgInfo, "Private adapter struct is NULL\n" );
return FALSE;
}
if( lp->dev == NULL ) {
DBG_ERROR( DbgInfo, "net_device struct in wl_private is NULL\n" );
return FALSE;
}
/* Check for the availability of FIDs; if none are available, don't take any
frames off the txQ */
if( lp->hcfCtx.IFB_RscInd == 0 ) {
return FALSE;
}
/* Reclaim the TxQ Elements and place them back on the free queue */
if( !list_empty( &( lp->txQ[0] ))) {
element = lp->txQ[0].next;
txF = (WVLAN_LFRAME * )list_entry( element, WVLAN_LFRAME, node );
if( txF != NULL ) {
lp->txF.skb = txF->frame.skb;
lp->txF.port = txF->frame.port;
txF->frame.skb = NULL;
txF->frame.port = 0;
list_del( &( txF->node ));
list_add( element, &( lp->txFree ));
lp->txQ_count--;
if( lp->txQ_count < TX_Q_LOW_WATER_MARK ) {
if( lp->netif_queue_on == FALSE ) {
DBG_TX( DbgInfo, "Kickstarting Q: %d\n", lp->txQ_count );
netif_wake_queue( lp->dev );
WL_WDS_NETIF_WAKE_QUEUE( lp );
lp->netif_queue_on = TRUE;
}
}
}
}
if( lp->txF.skb == NULL ) {
return FALSE;
}
/* If the device has resources (FIDs) available, then Tx the packet */
/* Format the TxRequest and send it to the adapter */
len = lp->txF.skb->len < ETH_ZLEN ? ETH_ZLEN : lp->txF.skb->len;
desc = &( lp->desc_tx );
desc->buf_addr = lp->txF.skb->data;
desc->BUF_CNT = len;
desc->next_desc_addr = NULL;
status = hcf_send_msg( &( lp->hcfCtx ), desc, lp->txF.port );
if( status == HCF_SUCCESS ) {
lp->dev->trans_start = jiffies;
DBG_TX( DbgInfo, "Transmit...\n" );
if( lp->txF.port == HCF_PORT_0 ) {
lp->stats.tx_packets++;
lp->stats.tx_bytes += lp->txF.skb->len;
}
#ifdef USE_WDS
else
{
lp->wds_port[(( lp->txF.port >> 8 ) - 1)].stats.tx_packets++;
lp->wds_port[(( lp->txF.port >> 8 ) - 1)].stats.tx_bytes += lp->txF.skb->len;
}
#endif /* USE_WDS */
/* Free the skb and perform queue cleanup, as the buffer was
transmitted successfully */
dev_kfree_skb( lp->txF.skb );
lp->txF.skb = NULL;
lp->txF.port = 0;
}
return TRUE;
} // wl_send
/*============================================================================*/
/*******************************************************************************
* wl_tx()
*******************************************************************************
*
* DESCRIPTION:
*
* The Tx handler function for the network layer.
*
* PARAMETERS:
*
* skb - a pointer to the sk_buff structure containing the data to transfer.
* dev - a pointer to the device's net_device structure.
*
* RETURNS:
*
* 0 on success
* 1 on error
*
******************************************************************************/
int wl_tx( struct sk_buff *skb, struct net_device *dev, int port )
{
unsigned long flags;
struct wl_private *lp = wl_priv(dev);
WVLAN_LFRAME *txF = NULL;
struct list_head *element;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_tx" );
/* Grab the spinlock */
wl_lock( lp, &flags );
if( lp->flags & WVLAN2_UIL_BUSY ) {
DBG_WARNING( DbgInfo, "UIL has device blocked\n" );
/* Start dropping packets here??? */
wl_unlock( lp, &flags );
return 1;
}
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
DBG_PRINT( "RTS: we're getting a Tx...\n" );
wl_unlock( lp, &flags );
return 1;
}
#endif /* USE_RTS */
if( !lp->use_dma ) {
/* Get an element from the queue */
element = lp->txFree.next;
txF = (WVLAN_LFRAME *)list_entry( element, WVLAN_LFRAME, node );
if( txF == NULL ) {
DBG_ERROR( DbgInfo, "Problem with list_entry\n" );
wl_unlock( lp, &flags );
return 1;
}
/* Fill out the frame */
txF->frame.skb = skb;
txF->frame.port = port;
/* Move the frame to the txQ */
/* NOTE: Here's where we would do priority queueing */
list_move(&(txF->node), &(lp->txQ[0]));
lp->txQ_count++;
if( lp->txQ_count >= DEFAULT_NUM_TX_FRAMES ) {
DBG_TX( DbgInfo, "Q Full: %d\n", lp->txQ_count );
if( lp->netif_queue_on == TRUE ) {
netif_stop_queue( lp->dev );
WL_WDS_NETIF_STOP_QUEUE( lp );
lp->netif_queue_on = FALSE;
}
}
}
wl_act_int_off( lp ); /* Disable Interrupts */
/* Send the data to the hardware using the appropriate method */
#ifdef ENABLE_DMA
if( lp->use_dma ) {
wl_send_dma( lp, skb, port );
}
else
#endif
{
wl_send( lp );
}
/* Re-enable Interrupts, release the spinlock and return */
wl_act_int_on( lp );
wl_unlock( lp, &flags );
return 0;
} // wl_tx
/*============================================================================*/
/*******************************************************************************
* wl_rx()
*******************************************************************************
*
* DESCRIPTION:
*
* The routine which performs data reception.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure.
*
* RETURNS:
*
* 0 on success
* 1 on error
*
******************************************************************************/
int wl_rx(struct net_device *dev)
{
int port;
struct sk_buff *skb;
struct wl_private *lp = wl_priv(dev);
int status;
hcf_16 pktlen;
hcf_16 hfs_stat;
DESC_STRCT *desc;
/*------------------------------------------------------------------------*/
DBG_FUNC("wl_rx")
DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
if(!( lp->flags & WVLAN2_UIL_BUSY )) {
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
DBG_PRINT( "RTS: We're getting an Rx...\n" );
return -EIO;
}
#endif /* USE_RTS */
/* Read the HFS_STAT register from the lookahead buffer */
hfs_stat = (hcf_16)(( lp->lookAheadBuf[HFS_STAT] ) |
( lp->lookAheadBuf[HFS_STAT + 1] << 8 ));
/* Make sure the frame isn't bad */
if(( hfs_stat & HFS_STAT_ERR ) != HCF_SUCCESS ) {
DBG_WARNING( DbgInfo, "HFS_STAT_ERROR (0x%x) in Rx Packet\n",
lp->lookAheadBuf[HFS_STAT] );
return -EIO;
}
/* Determine what port this packet is for */
port = ( hfs_stat >> 8 ) & 0x0007;
DBG_RX( DbgInfo, "Rx frame for port %d\n", port );
pktlen = lp->hcfCtx.IFB_RxLen;
if (pktlen != 0) {
skb = ALLOC_SKB(pktlen);
if (skb != NULL) {
/* Set the netdev based on the port */
switch( port ) {
#ifdef USE_WDS
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
skb->dev = lp->wds_port[port-1].dev;
break;
#endif /* USE_WDS */
case 0:
default:
skb->dev = dev;
break;
}
desc = &( lp->desc_rx );
desc->next_desc_addr = NULL;
/*
#define BLOCK_INPUT(buf, len) \
desc->buf_addr = buf; \
desc->BUF_SIZE = len; \
status = hcf_rcv_msg(&(lp->hcfCtx), desc, 0)
*/
GET_PACKET( skb->dev, skb, pktlen );
if( status == HCF_SUCCESS ) {
netif_rx( skb );
if( port == 0 ) {
lp->stats.rx_packets++;
lp->stats.rx_bytes += pktlen;
}
#ifdef USE_WDS
else
{
lp->wds_port[port-1].stats.rx_packets++;
lp->wds_port[port-1].stats.rx_bytes += pktlen;
}
#endif /* USE_WDS */
dev->last_rx = jiffies;
#ifdef WIRELESS_EXT
#ifdef WIRELESS_SPY
if( lp->spydata.spy_number > 0 ) {
char *srcaddr = skb->mac.raw + MAC_ADDR_SIZE;
wl_spy_gather( dev, srcaddr );
}
#endif /* WIRELESS_SPY */
#endif /* WIRELESS_EXT */
} else {
DBG_ERROR( DbgInfo, "Rx request to card FAILED\n" );
if( port == 0 ) {
lp->stats.rx_dropped++;
}
#ifdef USE_WDS
else
{
lp->wds_port[port-1].stats.rx_dropped++;
}
#endif /* USE_WDS */
dev_kfree_skb( skb );
}
} else {
DBG_ERROR( DbgInfo, "Could not alloc skb\n" );
if( port == 0 ) {
lp->stats.rx_dropped++;
}
#ifdef USE_WDS
else
{
lp->wds_port[port-1].stats.rx_dropped++;
}
#endif /* USE_WDS */
}
}
}
return 0;
} // wl_rx
/*============================================================================*/
/*******************************************************************************
* wl_multicast()
*******************************************************************************
*
* DESCRIPTION:
*
* Function to handle multicast packets
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
#ifdef NEW_MULTICAST
void wl_multicast( struct net_device *dev )
{
#if 1 //;? (HCF_TYPE) & HCF_TYPE_STA //;?should we return an error status in AP mode
//;?seems reasonable that even an AP-only driver could afford this small additional footprint
int x;
struct netdev_hw_addr *ha;
struct wl_private *lp = wl_priv(dev);
unsigned long flags;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_multicast" );
DBG_ENTER( DbgInfo );
DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
if( !wl_adapter_is_open( dev )) {
DBG_LEAVE( DbgInfo );
return;
}
#if DBG
if( DBG_FLAGS( DbgInfo ) & DBG_PARAM_ON ) {
DBG_PRINT(" flags: %s%s%s\n",
( dev->flags & IFF_PROMISC ) ? "Promiscuous " : "",
( dev->flags & IFF_MULTICAST ) ? "Multicast " : "",
( dev->flags & IFF_ALLMULTI ) ? "All-Multicast" : "" );
DBG_PRINT( " mc_count: %d\n", netdev_mc_count(dev));
netdev_for_each_mc_addr(ha, dev)
DBG_PRINT(" %pM (%d)\n", ha->addr, dev->addr_len);
}
#endif /* DBG */
if(!( lp->flags & WVLAN2_UIL_BUSY )) {
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
DBG_TRACE( DbgInfo, "Skipping multicast, in RTS mode\n" );
DBG_LEAVE( DbgInfo );
return;
}
#endif /* USE_RTS */
wl_lock( lp, &flags );
wl_act_int_off( lp );
if ( CNV_INT_TO_LITTLE( lp->hcfCtx.IFB_FWIdentity.comp_id ) == COMP_ID_FW_STA ) {
if( dev->flags & IFF_PROMISC ) {
/* Enable promiscuous mode */
lp->ltvRecord.len = 2;
lp->ltvRecord.typ = CFG_PROMISCUOUS_MODE;
lp->ltvRecord.u.u16[0] = CNV_INT_TO_LITTLE( 1 );
DBG_PRINT( "Enabling Promiscuous mode (IFF_PROMISC)\n" );
hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
}
else if ((netdev_mc_count(dev) > HCF_MAX_MULTICAST) ||
( dev->flags & IFF_ALLMULTI )) {
/* Shutting off this filter will enable all multicast frames to
be sent up from the device; however, this is a static RID, so
a call to wl_apply() is needed */
lp->ltvRecord.len = 2;
lp->ltvRecord.typ = CFG_CNF_RX_ALL_GROUP_ADDR;
lp->ltvRecord.u.u16[0] = CNV_INT_TO_LITTLE( 0 );
DBG_PRINT( "Enabling all multicast mode (IFF_ALLMULTI)\n" );
hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
wl_apply( lp );
}
else if (!netdev_mc_empty(dev)) {
/* Set the multicast addresses */
lp->ltvRecord.len = ( netdev_mc_count(dev) * 3 ) + 1;
lp->ltvRecord.typ = CFG_GROUP_ADDR;
x = 0;
netdev_for_each_mc_addr(ha, dev)
memcpy(&(lp->ltvRecord.u.u8[x++ * ETH_ALEN]),
ha->addr, ETH_ALEN);
DBG_PRINT( "Setting multicast list\n" );
hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
} else {
/* Disable promiscuous mode */
lp->ltvRecord.len = 2;
lp->ltvRecord.typ = CFG_PROMISCUOUS_MODE;
lp->ltvRecord.u.u16[0] = CNV_INT_TO_LITTLE( 0 );
DBG_PRINT( "Disabling Promiscuous mode\n" );
hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
/* Disable multicast mode */
lp->ltvRecord.len = 2;
lp->ltvRecord.typ = CFG_GROUP_ADDR;
DBG_PRINT( "Disabling Multicast mode\n" );
hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
/* Turning on this filter will prevent all multicast frames from
being sent up from the device; however, this is a static RID,
so a call to wl_apply() is needed */
lp->ltvRecord.len = 2;
lp->ltvRecord.typ = CFG_CNF_RX_ALL_GROUP_ADDR;
lp->ltvRecord.u.u16[0] = CNV_INT_TO_LITTLE( 1 );
DBG_PRINT( "Disabling all multicast mode (IFF_ALLMULTI)\n" );
hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
wl_apply( lp );
}
}
wl_act_int_on( lp );
wl_unlock( lp, &flags );
}
DBG_LEAVE( DbgInfo );
#endif /* HCF_STA */
} // wl_multicast
/*============================================================================*/
#else /* NEW_MULTICAST */
void wl_multicast( struct net_device *dev, int num_addrs, void *addrs )
{
DBG_FUNC( "wl_multicast");
DBG_ENTER(DbgInfo);
DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
DBG_PARAM( DbgInfo, "num_addrs", "%d", num_addrs );
DBG_PARAM( DbgInfo, "addrs", "0x%p", addrs );
#error Obsolete set multicast interface!
DBG_LEAVE( DbgInfo );
} // wl_multicast
/*============================================================================*/
#endif /* NEW_MULTICAST */
static const struct net_device_ops wl_netdev_ops =
{
.ndo_start_xmit = &wl_tx_port0,
.ndo_set_config = &wl_config,
.ndo_get_stats = &wl_stats,
.ndo_set_rx_mode = &wl_multicast,
.ndo_init = &wl_insert,
.ndo_open = &wl_adapter_open,
.ndo_stop = &wl_adapter_close,
.ndo_do_ioctl = &wl_ioctl,
.ndo_tx_timeout = &wl_tx_timeout,
#ifdef CONFIG_NET_POLL_CONTROLLER
.ndo_poll_controller = wl_poll,
#endif
};
/*******************************************************************************
* wl_device_alloc()
*******************************************************************************
*
* DESCRIPTION:
*
* Create instances of net_device and wl_private for the new adapter
* and register the device's entry points in the net_device structure.
*
* PARAMETERS:
*
* N/A
*
* RETURNS:
*
* a pointer to an allocated and initialized net_device struct for this
* device.
*
******************************************************************************/
struct net_device * wl_device_alloc( void )
{
struct net_device *dev = NULL;
struct wl_private *lp = NULL;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_device_alloc" );
DBG_ENTER( DbgInfo );
/* Alloc a net_device struct */
dev = alloc_etherdev(sizeof(struct wl_private));
if (!dev)
return NULL;
/* Initialize the 'next' pointer in the struct. Currently only used for PCI,
but do it here just in case it's used for other buses in the future */
lp = wl_priv(dev);
/* Check MTU */
if( dev->mtu > MTU_MAX )
{
DBG_WARNING( DbgInfo, "%s: MTU set too high, limiting to %d.\n",
dev->name, MTU_MAX );
dev->mtu = MTU_MAX;
}
/* Setup the function table in the device structure. */
dev->wireless_handlers = (struct iw_handler_def *)&wl_iw_handler_def;
lp->wireless_data.spy_data = &lp->spy_data;
dev->wireless_data = &lp->wireless_data;
dev->netdev_ops = &wl_netdev_ops;
dev->watchdog_timeo = TX_TIMEOUT;
dev->ethtool_ops = &wl_ethtool_ops;
netif_stop_queue( dev );
/* Allocate virtual devices for WDS support if needed */
WL_WDS_DEVICE_ALLOC( lp );
DBG_LEAVE( DbgInfo );
return dev;
} // wl_device_alloc
/*============================================================================*/
/*******************************************************************************
* wl_device_dealloc()
*******************************************************************************
*
* DESCRIPTION:
*
* Free instances of net_device and wl_private strcutres for an adapter
* and perform basic cleanup.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
void wl_device_dealloc( struct net_device *dev )
{
// struct wl_private *lp = wl_priv(dev);
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_device_dealloc" );
DBG_ENTER( DbgInfo );
/* Dealloc the WDS ports */
WL_WDS_DEVICE_DEALLOC( lp );
free_netdev( dev );
DBG_LEAVE( DbgInfo );
} // wl_device_dealloc
/*============================================================================*/
/*******************************************************************************
* wl_tx_port0()
*******************************************************************************
*
* DESCRIPTION:
*
* The handler routine for Tx over HCF_PORT_0.
*
* PARAMETERS:
*
* skb - a pointer to the sk_buff to transmit.
* dev - a pointer to a net_device structure representing HCF_PORT_0.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
int wl_tx_port0( struct sk_buff *skb, struct net_device *dev )
{
DBG_TX( DbgInfo, "Tx on Port 0\n" );
return wl_tx( skb, dev, HCF_PORT_0 );
#ifdef ENABLE_DMA
return wl_tx_dma( skb, dev, HCF_PORT_0 );
#endif
} // wl_tx_port0
/*============================================================================*/
#ifdef USE_WDS
/*******************************************************************************
* wl_tx_port1()
*******************************************************************************
*
* DESCRIPTION:
*
* The handler routine for Tx over HCF_PORT_1.
*
* PARAMETERS:
*
* skb - a pointer to the sk_buff to transmit.
* dev - a pointer to a net_device structure representing HCF_PORT_1.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
int wl_tx_port1( struct sk_buff *skb, struct net_device *dev )
{
DBG_TX( DbgInfo, "Tx on Port 1\n" );
return wl_tx( skb, dev, HCF_PORT_1 );
} // wl_tx_port1
/*============================================================================*/
/*******************************************************************************
* wl_tx_port2()
*******************************************************************************
*
* DESCRIPTION:
*
* The handler routine for Tx over HCF_PORT_2.
*
* PARAMETERS:
*
* skb - a pointer to the sk_buff to transmit.
* dev - a pointer to a net_device structure representing HCF_PORT_2.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
int wl_tx_port2( struct sk_buff *skb, struct net_device *dev )
{
DBG_TX( DbgInfo, "Tx on Port 2\n" );
return wl_tx( skb, dev, HCF_PORT_2 );
} // wl_tx_port2
/*============================================================================*/
/*******************************************************************************
* wl_tx_port3()
*******************************************************************************
*
* DESCRIPTION:
*
* The handler routine for Tx over HCF_PORT_3.
*
* PARAMETERS:
*
* skb - a pointer to the sk_buff to transmit.
* dev - a pointer to a net_device structure representing HCF_PORT_3.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
int wl_tx_port3( struct sk_buff *skb, struct net_device *dev )
{
DBG_TX( DbgInfo, "Tx on Port 3\n" );
return wl_tx( skb, dev, HCF_PORT_3 );
} // wl_tx_port3
/*============================================================================*/
/*******************************************************************************
* wl_tx_port4()
*******************************************************************************
*
* DESCRIPTION:
*
* The handler routine for Tx over HCF_PORT_4.
*
* PARAMETERS:
*
* skb - a pointer to the sk_buff to transmit.
* dev - a pointer to a net_device structure representing HCF_PORT_4.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
int wl_tx_port4( struct sk_buff *skb, struct net_device *dev )
{
DBG_TX( DbgInfo, "Tx on Port 4\n" );
return wl_tx( skb, dev, HCF_PORT_4 );
} // wl_tx_port4
/*============================================================================*/
/*******************************************************************************
* wl_tx_port5()
*******************************************************************************
*
* DESCRIPTION:
*
* The handler routine for Tx over HCF_PORT_5.
*
* PARAMETERS:
*
* skb - a pointer to the sk_buff to transmit.
* dev - a pointer to a net_device structure representing HCF_PORT_5.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
int wl_tx_port5( struct sk_buff *skb, struct net_device *dev )
{
DBG_TX( DbgInfo, "Tx on Port 5\n" );
return wl_tx( skb, dev, HCF_PORT_5 );
} // wl_tx_port5
/*============================================================================*/
/*******************************************************************************
* wl_tx_port6()
*******************************************************************************
*
* DESCRIPTION:
*
* The handler routine for Tx over HCF_PORT_6.
*
* PARAMETERS:
*
* skb - a pointer to the sk_buff to transmit.
* dev - a pointer to a net_device structure representing HCF_PORT_6.
*
* RETURNS:
*
* N/A
*
******************************************************************************/
int wl_tx_port6( struct sk_buff *skb, struct net_device *dev )
{
DBG_TX( DbgInfo, "Tx on Port 6\n" );
return wl_tx( skb, dev, HCF_PORT_6 );
} // wl_tx_port6
/*============================================================================*/
/*******************************************************************************
* wl_wds_device_alloc()
*******************************************************************************
*
* DESCRIPTION:
*
* Create instances of net_device to represent the WDS ports, and register
* the device's entry points in the net_device structure.
*
* PARAMETERS:
*
* lp - a pointer to the device's private adapter structure
*
* RETURNS:
*
* N/A, but will place pointers to the allocated and initialized net_device
* structs in the private adapter structure.
*
******************************************************************************/
void wl_wds_device_alloc( struct wl_private *lp )
{
int count;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_wds_device_alloc" );
DBG_ENTER( DbgInfo );
/* WDS support requires additional net_device structs to be allocated,
so that user space apps can use these virtual devices to specify the
port on which to Tx/Rx */
for( count = 0; count < NUM_WDS_PORTS; count++ ) {
struct net_device *dev_wds = NULL;
dev_wds = kzalloc(sizeof(struct net_device), GFP_KERNEL);
if (!dev_wds) {
DBG_LEAVE(DbgInfo);
return;
}
ether_setup( dev_wds );
lp->wds_port[count].dev = dev_wds;
/* Re-use wl_init for all the devices, as it currently does nothing, but
is required. Re-use the stats/tx_timeout handler for all as well; the
WDS port which is requesting these operations can be determined by
the net_device pointer. Set the private member of all devices to point
to the same net_device struct; that way, all information gets
funnelled through the one "real" net_device. Name the WDS ports
"wds<n>" */
lp->wds_port[count].dev->init = &wl_init;
lp->wds_port[count].dev->get_stats = &wl_stats;
lp->wds_port[count].dev->tx_timeout = &wl_tx_timeout;
lp->wds_port[count].dev->watchdog_timeo = TX_TIMEOUT;
lp->wds_port[count].dev->priv = lp;
sprintf( lp->wds_port[count].dev->name, "wds%d", count );
}
/* Register the Tx handlers */
lp->wds_port[0].dev->hard_start_xmit = &wl_tx_port1;
lp->wds_port[1].dev->hard_start_xmit = &wl_tx_port2;
lp->wds_port[2].dev->hard_start_xmit = &wl_tx_port3;
lp->wds_port[3].dev->hard_start_xmit = &wl_tx_port4;
lp->wds_port[4].dev->hard_start_xmit = &wl_tx_port5;
lp->wds_port[5].dev->hard_start_xmit = &wl_tx_port6;
WL_WDS_NETIF_STOP_QUEUE( lp );
DBG_LEAVE( DbgInfo );
} // wl_wds_device_alloc
/*============================================================================*/
/*******************************************************************************
* wl_wds_device_dealloc()
*******************************************************************************
*
* DESCRIPTION:
*
* Free instances of net_device structures used to support WDS.
*
* PARAMETERS:
*
* lp - a pointer to the device's private adapter structure
*
* RETURNS:
*
* N/A
*
******************************************************************************/
void wl_wds_device_dealloc( struct wl_private *lp )
{
int count;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_wds_device_dealloc" );
DBG_ENTER( DbgInfo );
for( count = 0; count < NUM_WDS_PORTS; count++ ) {
struct net_device *dev_wds = NULL;
dev_wds = lp->wds_port[count].dev;
if( dev_wds != NULL ) {
if( dev_wds->flags & IFF_UP ) {
dev_close( dev_wds );
dev_wds->flags &= ~( IFF_UP | IFF_RUNNING );
}
free_netdev(dev_wds);
lp->wds_port[count].dev = NULL;
}
}
DBG_LEAVE( DbgInfo );
} // wl_wds_device_dealloc
/*============================================================================*/
/*******************************************************************************
* wl_wds_netif_start_queue()
*******************************************************************************
*
* DESCRIPTION:
*
* Used to start the netif queues of all the "virtual" network devices
* which represent the WDS ports.
*
* PARAMETERS:
*
* lp - a pointer to the device's private adapter structure
*
* RETURNS:
*
* N/A
*
******************************************************************************/
void wl_wds_netif_start_queue( struct wl_private *lp )
{
int count;
/*------------------------------------------------------------------------*/
if( lp != NULL ) {
for( count = 0; count < NUM_WDS_PORTS; count++ ) {
if( lp->wds_port[count].is_registered &&
lp->wds_port[count].netif_queue_on == FALSE ) {
netif_start_queue( lp->wds_port[count].dev );
lp->wds_port[count].netif_queue_on = TRUE;
}
}
}
} // wl_wds_netif_start_queue
/*============================================================================*/
/*******************************************************************************
* wl_wds_netif_stop_queue()
*******************************************************************************
*
* DESCRIPTION:
*
* Used to stop the netif queues of all the "virtual" network devices
* which represent the WDS ports.
*
* PARAMETERS:
*
* lp - a pointer to the device's private adapter structure
*
* RETURNS:
*
* N/A
*
******************************************************************************/
void wl_wds_netif_stop_queue( struct wl_private *lp )
{
int count;
/*------------------------------------------------------------------------*/
if( lp != NULL ) {
for( count = 0; count < NUM_WDS_PORTS; count++ ) {
if( lp->wds_port[count].is_registered &&
lp->wds_port[count].netif_queue_on == TRUE ) {
netif_stop_queue( lp->wds_port[count].dev );
lp->wds_port[count].netif_queue_on = FALSE;
}
}
}
} // wl_wds_netif_stop_queue
/*============================================================================*/
/*******************************************************************************
* wl_wds_netif_wake_queue()
*******************************************************************************
*
* DESCRIPTION:
*
* Used to wake the netif queues of all the "virtual" network devices
* which represent the WDS ports.
*
* PARAMETERS:
*
* lp - a pointer to the device's private adapter structure
*
* RETURNS:
*
* N/A
*
******************************************************************************/
void wl_wds_netif_wake_queue( struct wl_private *lp )
{
int count;
/*------------------------------------------------------------------------*/
if( lp != NULL ) {
for( count = 0; count < NUM_WDS_PORTS; count++ ) {
if( lp->wds_port[count].is_registered &&
lp->wds_port[count].netif_queue_on == FALSE ) {
netif_wake_queue( lp->wds_port[count].dev );
lp->wds_port[count].netif_queue_on = TRUE;
}
}
}
} // wl_wds_netif_wake_queue
/*============================================================================*/
/*******************************************************************************
* wl_wds_netif_carrier_on()
*******************************************************************************
*
* DESCRIPTION:
*
* Used to signal the network layer that carrier is present on all of the
* "virtual" network devices which represent the WDS ports.
*
* PARAMETERS:
*
* lp - a pointer to the device's private adapter structure
*
* RETURNS:
*
* N/A
*
******************************************************************************/
void wl_wds_netif_carrier_on( struct wl_private *lp )
{
int count;
/*------------------------------------------------------------------------*/
if( lp != NULL ) {
for( count = 0; count < NUM_WDS_PORTS; count++ ) {
if( lp->wds_port[count].is_registered ) {
netif_carrier_on( lp->wds_port[count].dev );
}
}
}
} // wl_wds_netif_carrier_on
/*============================================================================*/
/*******************************************************************************
* wl_wds_netif_carrier_off()
*******************************************************************************
*
* DESCRIPTION:
*
* Used to signal the network layer that carrier is NOT present on all of
* the "virtual" network devices which represent the WDS ports.
*
* PARAMETERS:
*
* lp - a pointer to the device's private adapter structure
*
* RETURNS:
*
* N/A
*
******************************************************************************/
void wl_wds_netif_carrier_off( struct wl_private *lp )
{
int count;
if(lp != NULL) {
for(count = 0; count < NUM_WDS_PORTS; count++) {
if(lp->wds_port[count].is_registered)
netif_carrier_off(lp->wds_port[count].dev);
}
}
} // wl_wds_netif_carrier_off
/*============================================================================*/
#endif /* USE_WDS */
#ifdef ENABLE_DMA
/*******************************************************************************
* wl_send_dma()
*******************************************************************************
*
* DESCRIPTION:
*
* The routine which performs data transmits when using busmaster DMA.
*
* PARAMETERS:
*
* lp - a pointer to the device's wl_private struct.
* skb - a pointer to the network layer's data buffer.
* port - the Hermes port on which to transmit.
*
* RETURNS:
*
* 0 on success
* 1 on error
*
******************************************************************************/
int wl_send_dma( struct wl_private *lp, struct sk_buff *skb, int port )
{
int len;
DESC_STRCT *desc = NULL;
DESC_STRCT *desc_next = NULL;
/*------------------------------------------------------------------------*/
DBG_FUNC( "wl_send_dma" );
if( lp == NULL ) {
DBG_ERROR( DbgInfo, "Private adapter struct is NULL\n" );
return FALSE;
}
if( lp->dev == NULL ) {
DBG_ERROR( DbgInfo, "net_device struct in wl_private is NULL\n" );
return FALSE;
}
/* AGAIN, ALL THE QUEUEING DONE HERE IN I/O MODE IS NOT PERFORMED */
if( skb == NULL ) {
DBG_WARNING (DbgInfo, "Nothing to send.\n");
return FALSE;
}
len = skb->len;
/* Get a free descriptor */
desc = wl_pci_dma_get_tx_packet( lp );
if( desc == NULL ) {
if( lp->netif_queue_on == TRUE ) {
netif_stop_queue( lp->dev );
WL_WDS_NETIF_STOP_QUEUE( lp );
lp->netif_queue_on = FALSE;
dev_kfree_skb( skb );
return 0;
}
}
SET_BUF_CNT( desc, /*HCF_DMA_FD_CNT*/HFS_ADDR_DEST );
SET_BUF_SIZE( desc, HCF_DMA_TX_BUF1_SIZE );
desc_next = desc->next_desc_addr;
if( desc_next->buf_addr == NULL ) {
DBG_ERROR( DbgInfo, "DMA descriptor buf_addr is NULL\n" );
return FALSE;
}
/* Copy the payload into the DMA packet */
memcpy( desc_next->buf_addr, skb->data, len );
SET_BUF_CNT( desc_next, len );
SET_BUF_SIZE( desc_next, HCF_MAX_PACKET_SIZE );
hcf_dma_tx_put( &( lp->hcfCtx ), desc, 0 );
/* Free the skb and perform queue cleanup, as the buffer was
transmitted successfully */
dev_kfree_skb( skb );
return TRUE;
} // wl_send_dma
/*============================================================================*/
/*******************************************************************************
* wl_rx_dma()
*******************************************************************************
*
* DESCRIPTION:
*
* The routine which performs data reception when using busmaster DMA.
*
* PARAMETERS:
*
* dev - a pointer to the device's net_device structure.
*
* RETURNS:
*
* 0 on success
* 1 on error
*
******************************************************************************/
int wl_rx_dma( struct net_device *dev )
{
int port;
hcf_16 pktlen;
hcf_16 hfs_stat;
struct sk_buff *skb;
struct wl_private *lp = NULL;
DESC_STRCT *desc, *desc_next;
//CFG_MB_INFO_RANGE2_STRCT x;
/*------------------------------------------------------------------------*/
DBG_FUNC("wl_rx")
DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
if((( lp = dev->priv ) != NULL ) &&
!( lp->flags & WVLAN2_UIL_BUSY )) {
#ifdef USE_RTS
if( lp->useRTS == 1 ) {
DBG_PRINT( "RTS: We're getting an Rx...\n" );
return -EIO;
}
#endif /* USE_RTS */
//if( lp->dma.status == 0 )
//{
desc = hcf_dma_rx_get( &( lp->hcfCtx ));
if( desc != NULL )
{
/* Check and see if we rcvd. a WMP frame */
/*
if((( *(hcf_8 *)&desc->buf_addr[HFS_STAT] ) &
( HFS_STAT_MSG_TYPE | HFS_STAT_ERR )) == HFS_STAT_WMP_MSG )
{
DBG_TRACE( DbgInfo, "Got a WMP frame\n" );
x.len = sizeof( CFG_MB_INFO_RANGE2_STRCT ) / sizeof( hcf_16 );
x.typ = CFG_MB_INFO;
x.base_typ = CFG_WMP;
x.frag_cnt = 2;
x.frag_buf[0].frag_len = GET_BUF_CNT( descp ) / sizeof( hcf_16 );
x.frag_buf[0].frag_addr = (hcf_8 *) descp->buf_addr ;
x.frag_buf[1].frag_len = ( GET_BUF_CNT( descp->next_desc_addr ) + 1 ) / sizeof( hcf_16 );
x.frag_buf[1].frag_addr = (hcf_8 *) descp->next_desc_addr->buf_addr ;
hcf_put_info( &( lp->hcfCtx ), (LTVP)&x );
}
*/
desc_next = desc->next_desc_addr;
/* Make sure the buffer isn't empty */
if( GET_BUF_CNT( desc ) == 0 ) {
DBG_WARNING( DbgInfo, "Buffer is empty!\n" );
/* Give the descriptor back to the HCF */
hcf_dma_rx_put( &( lp->hcfCtx ), desc );
return -EIO;
}
/* Read the HFS_STAT register from the lookahead buffer */
hfs_stat = (hcf_16)( desc->buf_addr[HFS_STAT/2] );
/* Make sure the frame isn't bad */
if(( hfs_stat & HFS_STAT_ERR ) != HCF_SUCCESS )
{
DBG_WARNING( DbgInfo, "HFS_STAT_ERROR (0x%x) in Rx Packet\n",
desc->buf_addr[HFS_STAT/2] );
/* Give the descriptor back to the HCF */
hcf_dma_rx_put( &( lp->hcfCtx ), desc );
return -EIO;
}
/* Determine what port this packet is for */
port = ( hfs_stat >> 8 ) & 0x0007;
DBG_RX( DbgInfo, "Rx frame for port %d\n", port );
pktlen = GET_BUF_CNT(desc_next);
if (pktlen != 0) {
skb = ALLOC_SKB(pktlen);
if (skb != NULL) {
switch( port ) {
#ifdef USE_WDS
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
skb->dev = lp->wds_port[port-1].dev;
break;
#endif /* USE_WDS */
case 0:
default:
skb->dev = dev;
break;
}
GET_PACKET_DMA( skb->dev, skb, pktlen );
/* Give the descriptor back to the HCF */
hcf_dma_rx_put( &( lp->hcfCtx ), desc );
netif_rx( skb );
if( port == 0 ) {
lp->stats.rx_packets++;
lp->stats.rx_bytes += pktlen;
}
#ifdef USE_WDS
else
{
lp->wds_port[port-1].stats.rx_packets++;
lp->wds_port[port-1].stats.rx_bytes += pktlen;
}
#endif /* USE_WDS */
dev->last_rx = jiffies;
} else {
DBG_ERROR( DbgInfo, "Could not alloc skb\n" );
if( port == 0 )
{
lp->stats.rx_dropped++;
}
#ifdef USE_WDS
else
{
lp->wds_port[port-1].stats.rx_dropped++;
}
#endif /* USE_WDS */
}
}
}
//}
}
return 0;
} // wl_rx_dma
/*============================================================================*/
#endif // ENABLE_DMA