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authorRémi Denis-Courmont <remi.denis-courmont@nokia.com>2009-06-23 21:07:45 -0400
committerDavid S. Miller <davem@davemloft.net>2009-06-25 05:58:16 -0400
commit2be6fa4c7e5731375cc5e70843a3444293c27514 (patch)
tree82b6f84c70591692cfcc7beaebb406060d991e6c
parentc7a1a4c80f873d5d6ecd173035bb80eba489f380 (diff)
Phonet: generate Netlink RTM_DELADDR when destroying a device
Netlink address deletion events were not sent when a network device vanished neither when Phonet was unloaded. Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/phonet/pn_dev.c52
1 files changed, 31 insertions, 21 deletions
diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c
index 80a322d77909..b0d6ddd82a9d 100644
--- a/net/phonet/pn_dev.c
+++ b/net/phonet/pn_dev.c
@@ -69,10 +69,27 @@ static struct phonet_device *__phonet_get(struct net_device *dev)
69 return NULL; 69 return NULL;
70} 70}
71 71
72static void __phonet_device_free(struct phonet_device *pnd) 72static void phonet_device_destroy(struct net_device *dev)
73{ 73{
74 list_del(&pnd->list); 74 struct phonet_device_list *pndevs = phonet_device_list(dev_net(dev));
75 kfree(pnd); 75 struct phonet_device *pnd;
76
77 ASSERT_RTNL();
78
79 spin_lock_bh(&pndevs->lock);
80 pnd = __phonet_get(dev);
81 if (pnd)
82 list_del(&pnd->list);
83 spin_unlock_bh(&pndevs->lock);
84
85 if (pnd) {
86 u8 addr;
87
88 for (addr = find_first_bit(pnd->addrs, 64); addr < 64;
89 addr = find_next_bit(pnd->addrs, 64, 1+addr))
90 phonet_address_notify(RTM_DELADDR, dev, addr);
91 kfree(pnd);
92 }
76} 93}
77 94
78struct net_device *phonet_device_get(struct net *net) 95struct net_device *phonet_device_get(struct net *net)
@@ -126,8 +143,10 @@ int phonet_address_del(struct net_device *dev, u8 addr)
126 pnd = __phonet_get(dev); 143 pnd = __phonet_get(dev);
127 if (!pnd || !test_and_clear_bit(addr >> 2, pnd->addrs)) 144 if (!pnd || !test_and_clear_bit(addr >> 2, pnd->addrs))
128 err = -EADDRNOTAVAIL; 145 err = -EADDRNOTAVAIL;
129 else if (bitmap_empty(pnd->addrs, 64)) 146 else if (bitmap_empty(pnd->addrs, 64)) {
130 __phonet_device_free(pnd); 147 list_del(&pnd->list);
148 kfree(pnd);
149 }
131 spin_unlock_bh(&pndevs->lock); 150 spin_unlock_bh(&pndevs->lock);
132 return err; 151 return err;
133} 152}
@@ -181,18 +200,8 @@ static int phonet_device_notify(struct notifier_block *me, unsigned long what,
181{ 200{
182 struct net_device *dev = arg; 201 struct net_device *dev = arg;
183 202
184 if (what == NETDEV_UNREGISTER) { 203 if (what == NETDEV_UNREGISTER)
185 struct phonet_device_list *pndevs; 204 phonet_device_destroy(dev);
186 struct phonet_device *pnd;
187
188 /* Destroy phonet-specific device data */
189 pndevs = phonet_device_list(dev_net(dev));
190 spin_lock_bh(&pndevs->lock);
191 pnd = __phonet_get(dev);
192 if (pnd)
193 __phonet_device_free(pnd);
194 spin_unlock_bh(&pndevs->lock);
195 }
196 return 0; 205 return 0;
197 206
198} 207}
@@ -218,11 +227,12 @@ static int phonet_init_net(struct net *net)
218static void phonet_exit_net(struct net *net) 227static void phonet_exit_net(struct net *net)
219{ 228{
220 struct phonet_net *pnn = net_generic(net, phonet_net_id); 229 struct phonet_net *pnn = net_generic(net, phonet_net_id);
221 struct phonet_device *pnd, *n; 230 struct net_device *dev;
222
223 list_for_each_entry_safe(pnd, n, &pnn->pndevs.list, list)
224 __phonet_device_free(pnd);
225 231
232 rtnl_lock();
233 for_each_netdev(net, dev)
234 phonet_device_destroy(dev);
235 rtnl_unlock();
226 kfree(pnn); 236 kfree(pnn);
227} 237}
228 238