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[IPV6]: Run DAD when the link becomes ready. 

If the link was not available when the interface was created,
run DAD for pending tentative addresses when the link becomes ready.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
This commit is contained in:
YOSHIFUJI Hideaki 2005-12-21 22:57:44 +09:00
parent 3c21edbd11
commit c5e33bddd3
1 changed files with 23 additions and 0 deletions
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23
net/ipv6/addrconf.c
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@ -137,6 +137,7 @@ static int addrconf_ifdown(struct net_device *dev, int how);
static void addrconf_dad_start(struct inet6_ifaddr *ifp, u32 flags);
static void addrconf_dad_timer(unsigned long data);
static void addrconf_dad_completed(struct inet6_ifaddr *ifp);
static void addrconf_dad_run(struct inet6_dev *idev);
static void addrconf_rs_timer(unsigned long data);
static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
@ -418,6 +419,7 @@ static struct inet6_dev * ipv6_find_idev(struct net_device *dev)
if ((idev = ipv6_add_dev(dev)) == NULL)
return NULL;
}
if (dev->flags&IFF_UP)
ipv6_mc_up(idev);
return idev;
@ -2140,6 +2142,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
{
struct net_device *dev = (struct net_device *) data;
struct inet6_dev *idev = __in6_dev_get(dev);
int run_pending = 0;
switch(event) {
case NETDEV_UP:
@ -2172,6 +2175,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
"link becomes ready\n",
dev->name);
run_pending = 1;
}
switch(dev->type) {
@ -2190,6 +2194,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
break;
};
if (idev) {
if (run_pending)
addrconf_dad_run(idev);
/* If the MTU changed during the interface down, when the
interface up, the changed MTU must be reflected in the
idev as well as routers.
@ -2546,6 +2553,22 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
}
}
static void addrconf_dad_run(struct inet6_dev *idev) {
struct inet6_ifaddr *ifp;
read_lock_bh(&idev->lock);
for (ifp = idev->addr_list; ifp; ifp = ifp->if_next) {
spin_lock_bh(&ifp->lock);
if (!(ifp->flags & IFA_F_TENTATIVE)) {
spin_unlock_bh(&ifp->lock);
continue;
}
spin_unlock_bh(&ifp->lock);
addrconf_dad_kick(ifp);
}
read_unlock_bh(&idev->lock);
}
#ifdef CONFIG_PROC_FS
struct if6_iter_state {
int bucket;