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