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| author | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2005-12-21 22:57:44 +0900 |
|---|---|---|
| committer | YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> | 2005-12-21 22:57:44 +0900 |
| commit | c5e33bddd3c798f681f8f3027270127be6b61a3b (patch) | |
| tree | b8929b76a8e485becccf25a3385124fa88e5a17d /net | |
| parent | 3c21edbd113788b110116141c8078623a0900b6a (diff) | |
| download | lwn-c5e33bddd3c798f681f8f3027270127be6b61a3b.tar.gz lwn-c5e33bddd3c798f681f8f3027270127be6b61a3b.zip | |
[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.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index d012f6ac7040..f6ead6a843e3 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; |