diff options
| -rw-r--r-- | drivers/net/pcmcia/axnet_cs.c | 61 |
1 files changed, 53 insertions, 8 deletions
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c index aa5581369399..1cc94b2d76c1 100644 --- a/drivers/net/pcmcia/axnet_cs.c +++ b/drivers/net/pcmcia/axnet_cs.c @@ -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); |