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authorStanislaw Gruszka <stf_xl@wp.pl>2005-11-30 03:16:41 +0300
committerDavid S. Miller <davem@davemloft.net>2005-11-30 03:16:41 +0300
commit64bf69ddff7637b7ed7acf9b2a823cc0ee519439 (patch)
treefb3a746e36bcfa307979bef2a20ce5f1d32ec537 /drivers/atm
parentaaaaaadbe7a663d110814db50fcbe7d320eb4c32 (diff)
downloadlinux-64bf69ddff7637b7ed7acf9b2a823cc0ee519439.tar.xz
[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)
{
struct atm_dev *atmtcp_dev;
struct atmtcp_dev_data *dev_data;
- struct sock *s;
- struct hlist_node *node;
- struct atm_vcc *walk;
- int i;
atmtcp_dev = (struct atm_dev *) vcc->dev_data;
dev_data = PRIV(atmtcp_dev);
@@ -257,20 +253,8 @@ static void atmtcp_c_close(struct atm_vcc *vcc)
if (dev_data->persist) return;
atmtcp_dev->dev_data = NULL;
kfree(dev_data);
- shutdown_atm_dev(atmtcp_dev);
+ atm_dev_deregister(atmtcp_dev);
vcc->dev_data = NULL;
- read_lock(&vcc_sklist_lock);
- for(i = 0; i < VCC_HTABLE_SIZE; ++i) {
- struct hlist_head *head = &vcc_hash[i];
-
- sk_for_each(s, node, head) {
- walk = atm_sk(s);
- if (walk->dev != atmtcp_dev)
- continue;
- wake_up(s->sk_sleep);
- }
- }
- read_unlock(&vcc_sklist_lock);
module_put(THIS_MODULE);
}
@@ -450,7 +434,7 @@ static int atmtcp_remove_persistent(int itf)
if (PRIV(dev)->vcc) return 0;
kfree(dev_data);
atm_dev_put(dev);
- shutdown_atm_dev(dev);
+ atm_dev_deregister(dev);
return 0;
}