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[PATCH] axnet_cs.c : add hardware multicast support 

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Komuro 2006-03-26 07:31:55 +09:00 committed by Jeff Garzik
parent 5c5131297d
commit b8ab2dc3e1
1 changed files with 53 additions and 8 deletions
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61
drivers/net/pcmcia/axnet_cs.c
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@ -35,6 +35,7 @@
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/netdevice.h>
#include <linux/crc32.h>
#include "../8390.h"
#include <pcmcia/cs_types.h>
@ -1682,17 +1683,67 @@ static struct net_device_stats *get_stats(struct net_device *dev)
return &ei_local->stat;
}
/*
* Form the 64 bit 8390 multicast table from the linked list of addresses
* associated with this dev structure.
*/
static inline void make_mc_bits(u8 *bits, struct net_device *dev)
{
struct dev_mc_list *dmi;
u32 crc;
for (dmi=dev->mc_list; dmi; dmi=dmi->next) {
crc = ether_crc(ETH_ALEN, dmi->dmi_addr);
/*
* The 8390 uses the 6 most significant bits of the
* CRC to index the multicast table.
*/
bits[crc>>29] |= (1<<((crc>>26)&7));
}
}
/**
* do_set_multicast_list - set/clear multicast filter
* @dev: net device for which multicast filter is adjusted
*
* Set or clear the multicast filter for this adaptor. May be called
* from a BH in 2.1.x. Must be called with lock held.
* Set or clear the multicast filter for this adaptor.
* Must be called with lock held.
*/
static void do_set_multicast_list(struct net_device *dev)
{
long e8390_base = dev->base_addr;
int i;
struct ei_device *ei_local = (struct ei_device*)netdev_priv(dev);
if (!(dev->flags&(IFF_PROMISC|IFF_ALLMULTI))) {
memset(ei_local->mcfilter, 0, 8);
if (dev->mc_list)
make_mc_bits(ei_local->mcfilter, dev);
} else {
/* set to accept-all */
memset(ei_local->mcfilter, 0xFF, 8);
}
/*
* DP8390 manuals don't specify any magic sequence for altering
* the multicast regs on an already running card. To be safe, we
* ensure multicast mode is off prior to loading up the new hash
* table. If this proves to be not enough, we can always resort
* to stopping the NIC, loading the table and then restarting.
*/
if (netif_running(dev))
outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR);
outb_p(E8390_NODMA + E8390_PAGE1, e8390_base + E8390_CMD);
for(i = 0; i < 8; i++)
{
outb_p(ei_local->mcfilter[i], e8390_base + EN1_MULT_SHIFT(i));
}
outb_p(E8390_NODMA + E8390_PAGE0, e8390_base + E8390_CMD);
if(dev->flags&IFF_PROMISC)
outb_p(E8390_RXCONFIG | 0x58, e8390_base + EN0_RXCR);
@ -1794,12 +1845,6 @@ static void AX88190_init(struct net_device *dev, int startp)
if(inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
}
/*
* Initialize the multicast list to accept-all. If we enable multicast
* the higher levels can do the filtering.
*/
for (i = 0; i < 8; i++)
outb_p(0xff, e8390_base + EN1_MULT + i);
outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);