/**
* mipv6_mn_send_home_na - send NA when returning home
* @haddr: home address to advertise
*
* After returning home, MN must advertise all its valid addresses in
* home link to all nodes.
**/
void mipv6_mn_send_home_na(struct in6_addr *haddr)
{
struct net_device *dev = NULL;
struct in6_addr mc_allnodes;
struct mn_info *hinfo = NULL;
read_lock_bh(&mn_info_lock);
hinfo = mipv6_mn_get_info(haddr);
hinfo->is_at_home = 1;
if (!hinfo) {
read_unlock_bh(&mn_info_lock);
return;
}
dev = dev_get_by_index(hinfo->ifindex);
read_unlock_bh(&mn_info_lock);
if (dev == NULL) {
DEBUG((DBG_ERROR, "Send home_na: device not found."));
return;
}
ipv6_addr_all_nodes(&mc_allnodes);
if (ipv6_get_lladdr(dev, haddr) == 0)
ndisc_send_na(dev, NULL, &mc_allnodes, haddr, 0, 0, 1, 1);
ndisc_send_na(dev, NULL, &mc_allnodes, haddr, 0, 0, 1, 1);
dev_put(dev);
}
void ipv6_mc_init_dev(struct inet6_dev *idev)
{
struct in6_addr maddr;
/* Add all-nodes address. */
ipv6_addr_all_nodes(&maddr);
ipv6_dev_mc_inc(idev->dev, &maddr);
}
void ipv6_mc_up(struct inet6_dev *idev)
{
struct ifmcaddr6 *i;
struct in6_addr maddr;
/* Add all-nodes address. */
ipv6_addr_all_nodes(&maddr);
ipv6_dev_mc_inc(idev->dev, &maddr);
/* Install multicast list, except for all-nodes (already installed) */
for (i = idev->mc_list; i; i=i->if_next)
igmp6_group_added(i);
}
void ipv6_mc_down(struct inet6_dev *idev)
{
struct ifmcaddr6 *i;
struct in6_addr maddr;
/* Withdraw multicast list */
for (i = idev->mc_list; i; i=i->if_next)
igmp6_group_dropped(i);
/* Delete all-nodes address. */
ipv6_addr_all_nodes(&maddr);
ipv6_dev_mc_dec(idev->dev, &maddr);
}
void ipv6_mc_destroy_dev(struct inet6_dev *idev)
{
struct ifmcaddr6 *i;
struct in6_addr maddr;
MDBG3((KERN_DEBUG
"ipv6_mc_destroy_dev(idev=%p)\n", idev));
/* Delete all-nodes address. */
ipv6_addr_all_nodes(&maddr);
ipv6_dev_mc_dec(idev->dev, &maddr);
write_lock_bh(&idev->lock);
while ((i = idev->mc_list) != NULL) {
idev->mc_list = i->next;
write_unlock_bh(&idev->lock);
igmp6_group_dropped(i);
ma_put(i);
write_lock_bh(&idev->lock);
}
write_unlock_bh(&idev->lock);
}
