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authorstephen hemminger <shemminger@vyatta.com>2010-03-02 13:32:44 +0000
committerDavid S. Miller <davem@davemloft.net>2010-03-04 00:39:32 -0800
commit122e4519cd5c224d4b8e681d368132b643e28f60 (patch)
tree1fe589902069d711663b027ba0a631971254b22e /net
parente5c1a0aa00ce94ab0cd669bb290c3ae4657242a3 (diff)
downloadblackbird-op-linux-122e4519cd5c224d4b8e681d368132b643e28f60.tar.gz
blackbird-op-linux-122e4519cd5c224d4b8e681d368132b643e28f60.zip
IPv6: addrconf dad timer unnecessary bh_disable
Timer code runs in bottom half, so there is no need for using _bh form of locking. Also check if device is not ready to avoid race with address that is no longer active. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/addrconf.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 88fd8c5877ee..e6cba9c45c6c 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2850,9 +2850,9 @@ static void addrconf_dad_timer(unsigned long data)
struct inet6_dev *idev = ifp->idev;
struct in6_addr mcaddr;
- read_lock_bh(&idev->lock);
- if (idev->dead) {
- read_unlock_bh(&idev->lock);
+ read_lock(&idev->lock);
+ if (idev->dead || !(idev->if_flags & IF_READY)) {
+ read_unlock(&idev->lock);
goto out;
}
@@ -2864,7 +2864,7 @@ static void addrconf_dad_timer(unsigned long data)
ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
spin_unlock(&ifp->lock);
- read_unlock_bh(&idev->lock);
+ read_unlock(&idev->lock);
addrconf_dad_completed(ifp);
@@ -2874,7 +2874,7 @@ static void addrconf_dad_timer(unsigned long data)
ifp->probes--;
addrconf_mod_timer(ifp, AC_DAD, ifp->idev->nd_parms->retrans_time);
spin_unlock(&ifp->lock);
- read_unlock_bh(&idev->lock);
+ read_unlock(&idev->lock);
/* send a neighbour solicitation for our addr */
addrconf_addr_solict_mult(&ifp->addr, &mcaddr);
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