/**
* et131x_multicast - The handler to configure multicasting on the interface
* @netdev: a pointer to a net_device struct representing the device
*/
void et131x_multicast(struct net_device *netdev)
{
struct et131x_adapter *adapter = netdev_priv(netdev);
uint32_t PacketFilter = 0;
unsigned long flags;
struct dev_mc_list *mclist;
int i;
spin_lock_irqsave(&adapter->Lock, flags);
/* Before we modify the platform-independent filter flags, store them
* locally. This allows us to determine if anything's changed and if
* we even need to bother the hardware
*/
PacketFilter = adapter->PacketFilter;
/* Clear the 'multicast' flag locally; becuase we only have a single
* flag to check multicast, and multiple multicast addresses can be
* set, this is the easiest way to determine if more than one
* multicast address is being set.
*/
PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
/* Check the net_device flags and set the device independent flags
* accordingly
*/
if (netdev->flags & IFF_PROMISC) {
adapter->PacketFilter |= ET131X_PACKET_TYPE_PROMISCUOUS;
} else {
adapter->PacketFilter &= ~ET131X_PACKET_TYPE_PROMISCUOUS;
}
if (netdev->flags & IFF_ALLMULTI) {
adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
}
if (netdev_mc_count(netdev) > NIC_MAX_MCAST_LIST) {
adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
}
if (netdev_mc_count(netdev) < 1) {
adapter->PacketFilter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST;
adapter->PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
} else {
adapter->PacketFilter |= ET131X_PACKET_TYPE_MULTICAST;
}
/* Set values in the private adapter struct */
i = 0;
netdev_for_each_mc_addr(mclist, netdev) {
if (i == NIC_MAX_MCAST_LIST)
break;
memcpy(adapter->MCList[i++], mclist->dmi_addr, ETH_ALEN);
}
adapter->MCAddressCount = i;
/* Are the new flags different from the previous ones? If not, then no
* action is required
*
* NOTE - This block will always update the MCList with the hardware,
* even if the addresses aren't the same.
*/
if (PacketFilter != adapter->PacketFilter) {
/* Call the device's filter function */
et131x_set_packet_filter(adapter);
}
spin_unlock_irqrestore(&adapter->Lock, flags);
}
/**
* et131x_multicast - The handler to configure multicasting on the interface
* @netdev: a pointer to a net_device struct representing the device
*/
void et131x_multicast(struct net_device *netdev)
{
struct et131x_adapter *adapter = netdev_priv(netdev);
uint32_t PacketFilter = 0;
uint32_t count;
unsigned long lockflags;
struct dev_mc_list *mclist = netdev->mc_list;
DBG_ENTER(et131x_dbginfo);
spin_lock_irqsave(&adapter->Lock, lockflags);
/* Before we modify the platform-independent filter flags, store them
* locally. This allows us to determine if anything's changed and if
* we even need to bother the hardware
*/
PacketFilter = adapter->PacketFilter;
/* Clear the 'multicast' flag locally; becuase we only have a single
* flag to check multicast, and multiple multicast addresses can be
* set, this is the easiest way to determine if more than one
* multicast address is being set.
*/
PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
/* Check the net_device flags and set the device independent flags
* accordingly
*/
DBG_VERBOSE(et131x_dbginfo,
"MULTICAST ADDR COUNT: %d\n", netdev->mc_count);
if (netdev->flags & IFF_PROMISC) {
DBG_VERBOSE(et131x_dbginfo, "Request: PROMISCUOUS MODE ON\n");
adapter->PacketFilter |= ET131X_PACKET_TYPE_PROMISCUOUS;
} else {
DBG_VERBOSE(et131x_dbginfo, "Request: PROMISCUOUS MODE OFF\n");
adapter->PacketFilter &= ~ET131X_PACKET_TYPE_PROMISCUOUS;
}
if (netdev->flags & IFF_ALLMULTI) {
DBG_VERBOSE(et131x_dbginfo, "Request: ACCEPT ALL MULTICAST\n");
adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
}
if (netdev->mc_count > NIC_MAX_MCAST_LIST) {
DBG_WARNING(et131x_dbginfo,
"ACCEPT ALL MULTICAST for now, as there's more Multicast "
"addresses than the HW supports\n");
adapter->PacketFilter |= ET131X_PACKET_TYPE_ALL_MULTICAST;
}
if (netdev->mc_count < 1) {
DBG_VERBOSE(et131x_dbginfo, "Request: REJECT ALL MULTICAST\n");
adapter->PacketFilter &= ~ET131X_PACKET_TYPE_ALL_MULTICAST;
adapter->PacketFilter &= ~ET131X_PACKET_TYPE_MULTICAST;
} else {
DBG_VERBOSE(et131x_dbginfo,
"Request: SET MULTICAST FILTER(S)\n");
adapter->PacketFilter |= ET131X_PACKET_TYPE_MULTICAST;
}
/* Set values in the private adapter struct */
adapter->MCAddressCount = netdev->mc_count;
if (netdev->mc_count) {
if (mclist->dmi_addrlen != ETH_ALEN) {
DBG_WARNING(et131x_dbginfo,
"Multicast addrs are not ETH_ALEN in size\n");
} else {
count = netdev->mc_count - 1;
memcpy(adapter->MCList[count], mclist->dmi_addr,
ETH_ALEN);
}
}
/* Are the new flags different from the previous ones? If not, then no
* action is required
*
* NOTE - This block will always update the MCList with the hardware,
* even if the addresses aren't the same.
*/
if (PacketFilter != adapter->PacketFilter) {
/* Call the device's filter function */
DBG_VERBOSE(et131x_dbginfo, "UPDATE REQUIRED, FLAGS changed\n");
et131x_set_packet_filter(adapter);
} else {
DBG_VERBOSE(et131x_dbginfo,
"NO UPDATE REQUIRED, FLAGS didn't change\n");
}
spin_unlock_irqrestore(&adapter->Lock, lockflags);
DBG_LEAVE(et131x_dbginfo);
}
