ipv6: move DAD and addrconf_verify processing to workqueue
addrconf_join_solict and addrconf_join_anycast may cause actions which need rtnl locked, especially on first address creation. A new DAD state is introduced which defers processing of the initial DAD processing into a workqueue. To get rtnl lock we need to push the code paths which depend on those calls up to workqueues, specifically addrconf_verify and the DAD processing. (v2) addrconf_dad_failure needs to be queued up to the workqueue, too. This patch introduces a new DAD state and stop the DAD processing in the workqueue (this is because of the possible ipv6_del_addr processing which removes the solicited multicast address from the device). addrconf_verify_lock is removed, too. After the transition it is not needed any more. As we are not processing in bottom half anymore we need to be a bit more careful about disabling bottom half out when we lock spin_locks which are also used in bh. Relevant backtrace: [ 541.030090] RTNL: assertion failed at net/core/dev.c (4496) [ 541.031143] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G O 3.10.33-1-amd64-vyatta #1 [ 541.031145] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007 [ 541.031146] ffffffff8148a9f0 000000000000002f ffffffff813c98c1 ffff88007c4451f8 [ 541.031148] 0000000000000000 0000000000000000 ffffffff813d3540 ffff88007fc03d18 [ 541.031150] 0000880000000006 ffff88007c445000 ffffffffa0194160 0000000000000000 [ 541.031152] Call Trace: [ 541.031153] <IRQ> [<ffffffff8148a9f0>] ? dump_stack+0xd/0x17 [ 541.031180] [<ffffffff813c98c1>] ? __dev_set_promiscuity+0x101/0x180 [ 541.031183] [<ffffffff813d3540>] ? __hw_addr_create_ex+0x60/0xc0 [ 541.031185] [<ffffffff813cfe1a>] ? __dev_set_rx_mode+0xaa/0xc0 [ 541.031189] [<ffffffff813d3a81>] ? __dev_mc_add+0x61/0x90 [ 541.031198] [<ffffffffa01dcf9c>] ? igmp6_group_added+0xfc/0x1a0 [ipv6] [ 541.031208] [<ffffffff8111237b>] ? kmem_cache_alloc+0xcb/0xd0 [ 541.031212] [<ffffffffa01ddcd7>] ? ipv6_dev_mc_inc+0x267/0x300 [ipv6] [ 541.031216] [<ffffffffa01c2fae>] ? addrconf_join_solict+0x2e/0x40 [ipv6] [ 541.031219] [<ffffffffa01ba2e9>] ? ipv6_dev_ac_inc+0x159/0x1f0 [ipv6] [ 541.031223] [<ffffffffa01c0772>] ? addrconf_join_anycast+0x92/0xa0 [ipv6] [ 541.031226] [<ffffffffa01c311e>] ? __ipv6_ifa_notify+0x11e/0x1e0 [ipv6] [ 541.031229] [<ffffffffa01c3213>] ? ipv6_ifa_notify+0x33/0x50 [ipv6] [ 541.031233] [<ffffffffa01c36c8>] ? addrconf_dad_completed+0x28/0x100 [ipv6] [ 541.031241] [<ffffffff81075c1d>] ? task_cputime+0x2d/0x50 [ 541.031244] [<ffffffffa01c38d6>] ? addrconf_dad_timer+0x136/0x150 [ipv6] [ 541.031247] [<ffffffffa01c37a0>] ? addrconf_dad_completed+0x100/0x100 [ipv6] [ 541.031255] [<ffffffff8105313a>] ? call_timer_fn.isra.22+0x2a/0x90 [ 541.031258] [<ffffffffa01c37a0>] ? addrconf_dad_completed+0x100/0x100 [ipv6] Hunks and backtrace stolen from a patch by Stephen Hemminger. Reported-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Hannes Frederic Sowa
David S. Miller
parent
e2a1d3e47b
commit
c15b1ccadb
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@ -31,8 +31,10 @@
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#define IF_PREFIX_AUTOCONF 0x02
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enum {
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INET6_IFADDR_STATE_PREDAD,
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INET6_IFADDR_STATE_DAD,
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INET6_IFADDR_STATE_POSTDAD,
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INET6_IFADDR_STATE_ERRDAD,
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INET6_IFADDR_STATE_UP,
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INET6_IFADDR_STATE_DEAD,
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};
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@ -58,7 +60,7 @@ struct inet6_ifaddr {
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unsigned long cstamp; /* created timestamp */
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unsigned long tstamp; /* updated timestamp */
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struct timer_list dad_timer;
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struct delayed_work dad_work;
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struct inet6_dev *idev;
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struct rt6_info *rt;
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@ -133,10 +133,12 @@ static int ipv6_count_addresses(struct inet6_dev *idev);
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static struct hlist_head inet6_addr_lst[IN6_ADDR_HSIZE];
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static DEFINE_SPINLOCK(addrconf_hash_lock);
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static void addrconf_verify(unsigned long);
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static void addrconf_verify(void);
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static void addrconf_verify_rtnl(void);
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static void addrconf_verify_work(struct work_struct *);
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static DEFINE_TIMER(addr_chk_timer, addrconf_verify, 0, 0);
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static DEFINE_SPINLOCK(addrconf_verify_lock);
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static struct workqueue_struct *addrconf_wq;
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static DECLARE_DELAYED_WORK(addr_chk_work, addrconf_verify_work);
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static void addrconf_join_anycast(struct inet6_ifaddr *ifp);
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static void addrconf_leave_anycast(struct inet6_ifaddr *ifp);
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@ -151,7 +153,7 @@ static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,
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u32 flags, u32 noflags);
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static void addrconf_dad_start(struct inet6_ifaddr *ifp);
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static void addrconf_dad_timer(unsigned long data);
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static void addrconf_dad_work(struct work_struct *w);
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static void addrconf_dad_completed(struct inet6_ifaddr *ifp);
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static void addrconf_dad_run(struct inet6_dev *idev);
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static void addrconf_rs_timer(unsigned long data);
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@ -247,9 +249,9 @@ static void addrconf_del_rs_timer(struct inet6_dev *idev)
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__in6_dev_put(idev);
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}
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static void addrconf_del_dad_timer(struct inet6_ifaddr *ifp)
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static void addrconf_del_dad_work(struct inet6_ifaddr *ifp)
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{
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if (del_timer(&ifp->dad_timer))
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if (cancel_delayed_work(&ifp->dad_work))
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__in6_ifa_put(ifp);
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}
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@ -261,12 +263,12 @@ static void addrconf_mod_rs_timer(struct inet6_dev *idev,
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mod_timer(&idev->rs_timer, jiffies + when);
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}
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static void addrconf_mod_dad_timer(struct inet6_ifaddr *ifp,
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unsigned long when)
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static void addrconf_mod_dad_work(struct inet6_ifaddr *ifp,
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unsigned long delay)
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{
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if (!timer_pending(&ifp->dad_timer))
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if (!delayed_work_pending(&ifp->dad_work))
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in6_ifa_hold(ifp);
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mod_timer(&ifp->dad_timer, jiffies + when);
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mod_delayed_work(addrconf_wq, &ifp->dad_work, delay);
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}
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static int snmp6_alloc_dev(struct inet6_dev *idev)
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@ -751,8 +753,9 @@ void inet6_ifa_finish_destroy(struct inet6_ifaddr *ifp)
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in6_dev_put(ifp->idev);
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if (del_timer(&ifp->dad_timer))
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pr_notice("Timer is still running, when freeing ifa=%p\n", ifp);
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if (cancel_delayed_work(&ifp->dad_work))
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pr_notice("delayed DAD work was pending while freeing ifa=%p\n",
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ifp);
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if (ifp->state != INET6_IFADDR_STATE_DEAD) {
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pr_warn("Freeing alive inet6 address %p\n", ifp);
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@ -849,8 +852,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
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spin_lock_init(&ifa->lock);
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spin_lock_init(&ifa->state_lock);
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setup_timer(&ifa->dad_timer, addrconf_dad_timer,
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(unsigned long)ifa);
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INIT_DELAYED_WORK(&ifa->dad_work, addrconf_dad_work);
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INIT_HLIST_NODE(&ifa->addr_lst);
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ifa->scope = scope;
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ifa->prefix_len = pfxlen;
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@ -990,6 +992,8 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
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enum cleanup_prefix_rt_t action = CLEANUP_PREFIX_RT_NOP;
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unsigned long expires;
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ASSERT_RTNL();
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spin_lock_bh(&ifp->state_lock);
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state = ifp->state;
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ifp->state = INET6_IFADDR_STATE_DEAD;
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@ -1021,7 +1025,7 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp)
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write_unlock_bh(&ifp->idev->lock);
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addrconf_del_dad_timer(ifp);
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addrconf_del_dad_work(ifp);
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ipv6_ifa_notify(RTM_DELADDR, ifp);
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@ -1604,7 +1608,7 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
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{
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if (ifp->flags&IFA_F_PERMANENT) {
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spin_lock_bh(&ifp->lock);
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addrconf_del_dad_timer(ifp);
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addrconf_del_dad_work(ifp);
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ifp->flags |= IFA_F_TENTATIVE;
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if (dad_failed)
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ifp->flags |= IFA_F_DADFAILED;
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@ -1625,20 +1629,21 @@ static void addrconf_dad_stop(struct inet6_ifaddr *ifp, int dad_failed)
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spin_unlock_bh(&ifp->lock);
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}
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ipv6_del_addr(ifp);
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} else
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} else {
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ipv6_del_addr(ifp);
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}
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}
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static int addrconf_dad_end(struct inet6_ifaddr *ifp)
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{
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int err = -ENOENT;
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spin_lock(&ifp->state_lock);
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spin_lock_bh(&ifp->state_lock);
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if (ifp->state == INET6_IFADDR_STATE_DAD) {
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ifp->state = INET6_IFADDR_STATE_POSTDAD;
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err = 0;
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}
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spin_unlock(&ifp->state_lock);
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spin_unlock_bh(&ifp->state_lock);
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return err;
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}
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@ -1671,7 +1676,12 @@ void addrconf_dad_failure(struct inet6_ifaddr *ifp)
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}
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}
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addrconf_dad_stop(ifp, 1);
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spin_lock_bh(&ifp->state_lock);
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/* transition from _POSTDAD to _ERRDAD */
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ifp->state = INET6_IFADDR_STATE_ERRDAD;
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spin_unlock_bh(&ifp->state_lock);
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addrconf_mod_dad_work(ifp, 0);
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}
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/* Join to solicited addr multicast group. */
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@ -1680,6 +1690,8 @@ void addrconf_join_solict(struct net_device *dev, const struct in6_addr *addr)
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{
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struct in6_addr maddr;
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ASSERT_RTNL();
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if (dev->flags&(IFF_LOOPBACK|IFF_NOARP))
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return;
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@ -1691,6 +1703,8 @@ void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr)
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{
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struct in6_addr maddr;
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ASSERT_RTNL();
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if (idev->dev->flags&(IFF_LOOPBACK|IFF_NOARP))
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return;
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@ -1701,6 +1715,9 @@ void addrconf_leave_solict(struct inet6_dev *idev, const struct in6_addr *addr)
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static void addrconf_join_anycast(struct inet6_ifaddr *ifp)
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{
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struct in6_addr addr;
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ASSERT_RTNL();
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if (ifp->prefix_len >= 127) /* RFC 6164 */
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return;
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ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
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@ -1712,6 +1729,9 @@ static void addrconf_join_anycast(struct inet6_ifaddr *ifp)
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static void addrconf_leave_anycast(struct inet6_ifaddr *ifp)
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{
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struct in6_addr addr;
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ASSERT_RTNL();
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if (ifp->prefix_len >= 127) /* RFC 6164 */
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return;
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ipv6_addr_prefix(&addr, &ifp->addr, ifp->prefix_len);
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@ -2271,11 +2291,13 @@ ok:
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return;
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}
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ifp->flags |= IFA_F_MANAGETEMPADDR;
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update_lft = 0;
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create = 1;
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spin_lock_bh(&ifp->lock);
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ifp->flags |= IFA_F_MANAGETEMPADDR;
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ifp->cstamp = jiffies;
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ifp->tokenized = tokenized;
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spin_unlock_bh(&ifp->lock);
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addrconf_dad_start(ifp);
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}
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@ -2326,7 +2348,7 @@ ok:
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create, now);
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in6_ifa_put(ifp);
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addrconf_verify(0);
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addrconf_verify();
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}
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}
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inet6_prefix_notify(RTM_NEWPREFIX, in6_dev, pinfo);
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@ -2475,7 +2497,7 @@ static int inet6_addr_add(struct net *net, int ifindex,
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manage_tempaddrs(idev, ifp, valid_lft, prefered_lft,
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true, jiffies);
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in6_ifa_put(ifp);
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addrconf_verify(0);
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addrconf_verify_rtnl();
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return 0;
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}
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@ -3011,7 +3033,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
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hlist_for_each_entry_rcu(ifa, h, addr_lst) {
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if (ifa->idev == idev) {
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hlist_del_init_rcu(&ifa->addr_lst);
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addrconf_del_dad_timer(ifa);
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addrconf_del_dad_work(ifa);
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goto restart;
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}
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}
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@ -3049,7 +3071,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
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while (!list_empty(&idev->addr_list)) {
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ifa = list_first_entry(&idev->addr_list,
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struct inet6_ifaddr, if_list);
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addrconf_del_dad_timer(ifa);
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addrconf_del_dad_work(ifa);
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list_del(&ifa->if_list);
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@ -3148,10 +3170,10 @@ static void addrconf_dad_kick(struct inet6_ifaddr *ifp)
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rand_num = prandom_u32() % (idev->cnf.rtr_solicit_delay ? : 1);
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ifp->dad_probes = idev->cnf.dad_transmits;
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addrconf_mod_dad_timer(ifp, rand_num);
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addrconf_mod_dad_work(ifp, rand_num);
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}
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static void addrconf_dad_start(struct inet6_ifaddr *ifp)
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static void addrconf_dad_begin(struct inet6_ifaddr *ifp)
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{
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struct inet6_dev *idev = ifp->idev;
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struct net_device *dev = idev->dev;
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@ -3203,25 +3225,68 @@ out:
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read_unlock_bh(&idev->lock);
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}
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static void addrconf_dad_timer(unsigned long data)
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static void addrconf_dad_start(struct inet6_ifaddr *ifp)
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{
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struct inet6_ifaddr *ifp = (struct inet6_ifaddr *) data;
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bool begin_dad = false;
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spin_lock_bh(&ifp->state_lock);
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if (ifp->state != INET6_IFADDR_STATE_DEAD) {
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ifp->state = INET6_IFADDR_STATE_PREDAD;
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begin_dad = true;
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}
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spin_unlock_bh(&ifp->state_lock);
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if (begin_dad)
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addrconf_mod_dad_work(ifp, 0);
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}
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static void addrconf_dad_work(struct work_struct *w)
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{
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struct inet6_ifaddr *ifp = container_of(to_delayed_work(w),
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struct inet6_ifaddr,
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dad_work);
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struct inet6_dev *idev = ifp->idev;
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struct in6_addr mcaddr;
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enum {
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DAD_PROCESS,
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DAD_BEGIN,
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DAD_ABORT,
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} action = DAD_PROCESS;
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rtnl_lock();
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spin_lock_bh(&ifp->state_lock);
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if (ifp->state == INET6_IFADDR_STATE_PREDAD) {
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action = DAD_BEGIN;
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ifp->state = INET6_IFADDR_STATE_DAD;
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} else if (ifp->state == INET6_IFADDR_STATE_ERRDAD) {
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action = DAD_ABORT;
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ifp->state = INET6_IFADDR_STATE_POSTDAD;
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}
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spin_unlock_bh(&ifp->state_lock);
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if (action == DAD_BEGIN) {
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addrconf_dad_begin(ifp);
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goto out;
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} else if (action == DAD_ABORT) {
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addrconf_dad_stop(ifp, 1);
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goto out;
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}
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if (!ifp->dad_probes && addrconf_dad_end(ifp))
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goto out;
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write_lock(&idev->lock);
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write_lock_bh(&idev->lock);
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if (idev->dead || !(idev->if_flags & IF_READY)) {
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write_unlock(&idev->lock);
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write_unlock_bh(&idev->lock);
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goto out;
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}
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spin_lock(&ifp->lock);
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if (ifp->state == INET6_IFADDR_STATE_DEAD) {
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spin_unlock(&ifp->lock);
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write_unlock(&idev->lock);
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write_unlock_bh(&idev->lock);
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goto out;
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}
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@ -3232,7 +3297,7 @@ static void addrconf_dad_timer(unsigned long data)
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ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
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spin_unlock(&ifp->lock);
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write_unlock(&idev->lock);
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write_unlock_bh(&idev->lock);
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addrconf_dad_completed(ifp);
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@ -3240,16 +3305,17 @@ static void addrconf_dad_timer(unsigned long data)
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}
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ifp->dad_probes--;
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addrconf_mod_dad_timer(ifp,
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NEIGH_VAR(ifp->idev->nd_parms, RETRANS_TIME));
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addrconf_mod_dad_work(ifp,
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NEIGH_VAR(ifp->idev->nd_parms, RETRANS_TIME));
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spin_unlock(&ifp->lock);
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write_unlock(&idev->lock);
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write_unlock_bh(&idev->lock);
|
||||
|
||||
/* send a neighbour solicitation for our addr */
|
||||
addrconf_addr_solict_mult(&ifp->addr, &mcaddr);
|
||||
ndisc_send_ns(ifp->idev->dev, NULL, &ifp->addr, &mcaddr, &in6addr_any);
|
||||
out:
|
||||
in6_ifa_put(ifp);
|
||||
rtnl_unlock();
|
||||
}
|
||||
|
||||
/* ifp->idev must be at least read locked */
|
||||
|
|
@ -3276,7 +3342,7 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp)
|
|||
struct in6_addr lladdr;
|
||||
bool send_rs, send_mld;
|
||||
|
||||
addrconf_del_dad_timer(ifp);
|
||||
addrconf_del_dad_work(ifp);
|
||||
|
||||
/*
|
||||
* Configure the address for reception. Now it is valid.
|
||||
|
|
@ -3517,23 +3583,23 @@ int ipv6_chk_home_addr(struct net *net, const struct in6_addr *addr)
|
|||
* Periodic address status verification
|
||||
*/
|
||||
|
||||
static void addrconf_verify(unsigned long foo)
|
||||
static void addrconf_verify_rtnl(void)
|
||||
{
|
||||
unsigned long now, next, next_sec, next_sched;
|
||||
struct inet6_ifaddr *ifp;
|
||||
int i;
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
rcu_read_lock_bh();
|
||||
spin_lock(&addrconf_verify_lock);
|
||||
now = jiffies;
|
||||
next = round_jiffies_up(now + ADDR_CHECK_FREQUENCY);
|
||||
|
||||
del_timer(&addr_chk_timer);
|
||||
cancel_delayed_work(&addr_chk_work);
|
||||
|
||||
for (i = 0; i < IN6_ADDR_HSIZE; i++) {
|
||||
restart:
|
||||
hlist_for_each_entry_rcu_bh(ifp,
|
||||
&inet6_addr_lst[i], addr_lst) {
|
||||
hlist_for_each_entry_rcu_bh(ifp, &inet6_addr_lst[i], addr_lst) {
|
||||
unsigned long age;
|
||||
|
||||
/* When setting preferred_lft to a value not zero or
|
||||
|
|
@ -3628,13 +3694,22 @@ restart:
|
|||
|
||||
ADBG(KERN_DEBUG "now = %lu, schedule = %lu, rounded schedule = %lu => %lu\n",
|
||||
now, next, next_sec, next_sched);
|
||||
|
||||
addr_chk_timer.expires = next_sched;
|
||||
add_timer(&addr_chk_timer);
|
||||
spin_unlock(&addrconf_verify_lock);
|
||||
mod_delayed_work(addrconf_wq, &addr_chk_work, next_sched - now);
|
||||
rcu_read_unlock_bh();
|
||||
}
|
||||
|
||||
static void addrconf_verify_work(struct work_struct *w)
|
||||
{
|
||||
rtnl_lock();
|
||||
addrconf_verify_rtnl();
|
||||
rtnl_unlock();
|
||||
}
|
||||
|
||||
static void addrconf_verify(void)
|
||||
{
|
||||
mod_delayed_work(addrconf_wq, &addr_chk_work, 0);
|
||||
}
|
||||
|
||||
static struct in6_addr *extract_addr(struct nlattr *addr, struct nlattr *local,
|
||||
struct in6_addr **peer_pfx)
|
||||
{
|
||||
|
|
@ -3691,6 +3766,8 @@ static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags,
|
|||
bool was_managetempaddr;
|
||||
bool had_prefixroute;
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (!valid_lft || (prefered_lft > valid_lft))
|
||||
return -EINVAL;
|
||||
|
||||
|
|
@ -3756,7 +3833,7 @@ static int inet6_addr_modify(struct inet6_ifaddr *ifp, u32 ifa_flags,
|
|||
!was_managetempaddr, jiffies);
|
||||
}
|
||||
|
||||
addrconf_verify(0);
|
||||
addrconf_verify_rtnl();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -4386,6 +4463,8 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
|
|||
bool update_rs = false;
|
||||
struct in6_addr ll_addr;
|
||||
|
||||
ASSERT_RTNL();
|
||||
|
||||
if (token == NULL)
|
||||
return -EINVAL;
|
||||
if (ipv6_addr_any(token))
|
||||
|
|
@ -4434,7 +4513,7 @@ static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
|
|||
}
|
||||
|
||||
write_unlock_bh(&idev->lock);
|
||||
addrconf_verify(0);
|
||||
addrconf_verify_rtnl();
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -4636,6 +4715,9 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
|
|||
{
|
||||
struct net *net = dev_net(ifp->idev->dev);
|
||||
|
||||
if (event)
|
||||
ASSERT_RTNL();
|
||||
|
||||
inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
|
||||
|
||||
switch (event) {
|
||||
|
|
@ -5244,6 +5326,12 @@ int __init addrconf_init(void)
|
|||
if (err < 0)
|
||||
goto out_addrlabel;
|
||||
|
||||
addrconf_wq = create_workqueue("ipv6_addrconf");
|
||||
if (!addrconf_wq) {
|
||||
err = -ENOMEM;
|
||||
goto out_nowq;
|
||||
}
|
||||
|
||||
/* The addrconf netdev notifier requires that loopback_dev
|
||||
* has it's ipv6 private information allocated and setup
|
||||
* before it can bring up and give link-local addresses
|
||||
|
|
@ -5274,7 +5362,7 @@ int __init addrconf_init(void)
|
|||
|
||||
register_netdevice_notifier(&ipv6_dev_notf);
|
||||
|
||||
addrconf_verify(0);
|
||||
addrconf_verify();
|
||||
|
||||
rtnl_af_register(&inet6_ops);
|
||||
|
||||
|
|
@ -5302,6 +5390,8 @@ errout:
|
|||
rtnl_af_unregister(&inet6_ops);
|
||||
unregister_netdevice_notifier(&ipv6_dev_notf);
|
||||
errlo:
|
||||
destroy_workqueue(addrconf_wq);
|
||||
out_nowq:
|
||||
unregister_pernet_subsys(&addrconf_ops);
|
||||
out_addrlabel:
|
||||
ipv6_addr_label_cleanup();
|
||||
|
|
@ -5337,7 +5427,8 @@ void addrconf_cleanup(void)
|
|||
for (i = 0; i < IN6_ADDR_HSIZE; i++)
|
||||
WARN_ON(!hlist_empty(&inet6_addr_lst[i]));
|
||||
spin_unlock_bh(&addrconf_hash_lock);
|
||||
|
||||
del_timer(&addr_chk_timer);
|
||||
cancel_delayed_work(&addr_chk_work);
|
||||
rtnl_unlock();
|
||||
|
||||
destroy_workqueue(addrconf_wq);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue