static void lowpan_ndisc_prefix_rcv_add_addr(struct net *net,
struct net_device *dev,
const struct prefix_info *pinfo,
struct inet6_dev *in6_dev,
struct in6_addr *addr,
int addr_type, u32 addr_flags,
bool sllao, bool tokenized,
__u32 valid_lft,
u32 prefered_lft,
bool dev_addr_generated)
{
int err;
/* generates short based address for RA PIO's */
if (lowpan_is_ll(dev, LOWPAN_LLTYPE_IEEE802154) && dev_addr_generated &&
!addrconf_ifid_802154_6lowpan(addr->s6_addr + 8, dev)) {
err = addrconf_prefix_rcv_add_addr(net, dev, pinfo, in6_dev,
addr, addr_type, addr_flags,
sllao, tokenized, valid_lft,
prefered_lft);
if (err)
ND_PRINTK(2, warn,
"RA: could not add a short address based address for prefix: %pI6c\n",
&pinfo->prefix);
}
}
static int lowpan_event(struct notifier_block *unused,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct inet6_dev *idev;
struct in6_addr addr;
int i;
if (dev->type != ARPHRD_6LOWPAN)
return NOTIFY_DONE;
idev = __in6_dev_get(dev);
if (!idev)
return NOTIFY_DONE;
switch (event) {
case NETDEV_UP:
case NETDEV_CHANGE:
/* (802.15.4 6LoWPAN short address slaac handling */
if (lowpan_is_ll(dev, LOWPAN_LLTYPE_IEEE802154) &&
addrconf_ifid_802154_6lowpan(addr.s6_addr + 8, dev) == 0) {
__ipv6_addr_set_half(&addr.s6_addr32[0],
htonl(0xFE800000), 0);
addrconf_add_linklocal(idev, &addr, 0);
}
break;
case NETDEV_DOWN:
for (i = 0; i < LOWPAN_IPHC_CTX_TABLE_SIZE; i++)
clear_bit(LOWPAN_IPHC_CTX_FLAG_ACTIVE,
&lowpan_dev(dev)->ctx.table[i].flags);
break;
default:
return NOTIFY_DONE;
}
return NOTIFY_OK;
}