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sky2: accept multicast pause frames

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When using flow control, the PHY needs to accept multicast pause frames.
Without this fix, these frames were getting discarded by the PHY before
doing any flow control.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
This commit is contained in:
Stephen Hemminger 2006-10-17 10:24:23 -07:00
parent 52c89cac67
commit a052b52f4b
1 changed files with 18 additions and 6 deletions
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24
drivers/net/sky2.c
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@ -2850,6 +2850,14 @@ static int sky2_set_mac_address(struct net_device *dev, void *p)
return 0;
}
static void inline sky2_add_filter(u8 filter[8], const u8 *addr)
{
u32 bit;
bit = ether_crc(ETH_ALEN, addr) & 63;
filter[bit >> 3] |= 1 << (bit & 7);
}
static void sky2_set_multicast(struct net_device *dev)
{
struct sky2_port *sky2 = netdev_priv(dev);
@ -2858,7 +2866,10 @@ static void sky2_set_multicast(struct net_device *dev)
struct dev_mc_list *list = dev->mc_list;
u16 reg;
u8 filter[8];
int rx_pause;
static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
rx_pause = (sky2->flow_status == FC_RX || sky2->flow_status == FC_BOTH);
memset(filter, 0, sizeof(filter));
reg = gma_read16(hw, port, GM_RX_CTRL);
@ -2866,18 +2877,19 @@ static void sky2_set_multicast(struct net_device *dev)
if (dev->flags & IFF_PROMISC) /* promiscuous */
reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
else if ((dev->flags & IFF_ALLMULTI) || dev->mc_count > 16) /* all multicast */
else if (dev->flags & IFF_ALLMULTI)
memset(filter, 0xff, sizeof(filter));
else if (dev->mc_count == 0) /* no multicast */
else if (dev->mc_count == 0 && !rx_pause)
reg &= ~GM_RXCR_MCF_ENA;
else {
int i;
reg |= GM_RXCR_MCF_ENA;
for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
filter[bit / 8] |= 1 << (bit % 8);
}
if (rx_pause)
sky2_add_filter(filter, pause_mc_addr);
for (i = 0; list && i < dev->mc_count; i++, list = list->next)
sky2_add_filter(filter, list->dmi_addr);
}
gma_write16(hw, port, GM_MC_ADDR_H1,