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authorYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2005-12-21 22:57:44 +0900
committerYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>2005-12-21 22:57:44 +0900
commitc5e33bddd3c798f681f8f3027270127be6b61a3b (patch)
treeb8929b76a8e485becccf25a3385124fa88e5a17d /net
parent3c21edbd113788b110116141c8078623a0900b6a (diff)
[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>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/addrconf.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index d012f6ac704..f6ead6a843e 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -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;