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authorStanislaw Gruszka <stf_xl@wp.pl>2005-11-29 19:16:41 -0500
committerDavid S. Miller <davem@davemloft.net>2005-11-29 19:16:41 -0500
commit64bf69ddff7637b7ed7acf9b2a823cc0ee519439 (patch)
treefb3a746e36bcfa307979bef2a20ce5f1d32ec537 /drivers/atm
parentaaaaaadbe7a663d110814db50fcbe7d320eb4c32 (diff)
[ATM]: deregistration removes device from atm_devs list immediately
atm_dev_deregister() removes device from atm_dev list immediately to prevent operations on a phantom device. Decision to free device based only on ->refcnt now. Remove shutdown_atm_dev() use atm_dev_deregister() instead. atm_dev_deregister() also asynchronously releases all vccs related to device. Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm')
-rw-r--r--drivers/atm/atmtcp.c20
1 files changed, 2 insertions, 18 deletions
diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c
index 57f1810fdccd..fc518d85543d 100644
--- a/drivers/atm/atmtcp.c
+++ b/drivers/atm/atmtcp.c
@@ -246,10 +246,6 @@ static void atmtcp_c_close(struct atm_vcc *vcc)
246{ 246{
247 struct atm_dev *atmtcp_dev; 247 struct atm_dev *atmtcp_dev;
248 struct atmtcp_dev_data *dev_data; 248 struct atmtcp_dev_data *dev_data;
249 struct sock *s;
250 struct hlist_node *node;
251 struct atm_vcc *walk;
252 int i;
253 249
254 atmtcp_dev = (struct atm_dev *) vcc->dev_data; 250 atmtcp_dev = (struct atm_dev *) vcc->dev_data;
255 dev_data = PRIV(atmtcp_dev); 251 dev_data = PRIV(atmtcp_dev);
@@ -257,20 +253,8 @@ static void atmtcp_c_close(struct atm_vcc *vcc)
257 if (dev_data->persist) return; 253 if (dev_data->persist) return;
258 atmtcp_dev->dev_data = NULL; 254 atmtcp_dev->dev_data = NULL;
259 kfree(dev_data); 255 kfree(dev_data);
260 shutdown_atm_dev(atmtcp_dev); 256 atm_dev_deregister(atmtcp_dev);
261 vcc->dev_data = NULL; 257 vcc->dev_data = NULL;
262 read_lock(&vcc_sklist_lock);
263 for(i = 0; i < VCC_HTABLE_SIZE; ++i) {
264 struct hlist_head *head = &vcc_hash[i];
265
266 sk_for_each(s, node, head) {
267 walk = atm_sk(s);
268 if (walk->dev != atmtcp_dev)
269 continue;
270 wake_up(s->sk_sleep);
271 }
272 }
273 read_unlock(&vcc_sklist_lock);
274 module_put(THIS_MODULE); 258 module_put(THIS_MODULE);
275} 259}
276 260
@@ -450,7 +434,7 @@ static int atmtcp_remove_persistent(int itf)
450 if (PRIV(dev)->vcc) return 0; 434 if (PRIV(dev)->vcc) return 0;
451 kfree(dev_data); 435 kfree(dev_data);
452 atm_dev_put(dev); 436 atm_dev_put(dev);
453 shutdown_atm_dev(dev); 437 atm_dev_deregister(dev);
454 return 0; 438 return 0;
455} 439}
456 440