summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2008-12-22 10:12:54 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-22 10:12:54 -0800
commit7ef5f41c16fdddfc14e882a57200334614d8ffd6 (patch)
tree5b6b4f59587e826993cead051fd42e08d2b590da /drivers
parent3d44cc3e01ee1b40317f79ed54324e25c4f848df (diff)
parent739840d529eb7505d3cbfe9d468bf1440c9a8e27 (diff)
downloadconfigs-7ef5f41c16fdddfc14e882a57200334614d8ffd6.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: ppp: fix segfaults introduced by netdev_priv changes net: Fix module refcount leak in kernel_accept()
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ppp_generic.c28
1 files changed, 13 insertions, 15 deletions
diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 7e857e938ad..714a23035de 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -116,6 +116,7 @@ struct ppp {
unsigned long last_xmit; /* jiffies when last pkt sent 9c */
unsigned long last_recv; /* jiffies when last pkt rcvd a0 */
struct net_device *dev; /* network interface device a4 */
+ int closing; /* is device closing down? a8 */
#ifdef CONFIG_PPP_MULTILINK
int nxchan; /* next channel to send something on */
u32 nxseq; /* next sequence number to send */
@@ -995,7 +996,7 @@ ppp_xmit_process(struct ppp *ppp)
struct sk_buff *skb;
ppp_xmit_lock(ppp);
- if (ppp->dev) {
+ if (!ppp->closing) {
ppp_push(ppp);
while (!ppp->xmit_pending
&& (skb = skb_dequeue(&ppp->file.xq)))
@@ -1463,8 +1464,7 @@ static inline void
ppp_do_recv(struct ppp *ppp, struct sk_buff *skb, struct channel *pch)
{
ppp_recv_lock(ppp);
- /* ppp->dev == 0 means interface is closing down */
- if (ppp->dev)
+ if (!ppp->closing)
ppp_receive_frame(ppp, skb, pch);
else
kfree_skb(skb);
@@ -2498,18 +2498,16 @@ init_ppp_file(struct ppp_file *pf, int kind)
*/
static void ppp_shutdown_interface(struct ppp *ppp)
{
- struct net_device *dev;
-
mutex_lock(&all_ppp_mutex);
- ppp_lock(ppp);
- dev = ppp->dev;
- ppp->dev = NULL;
- ppp_unlock(ppp);
/* This will call dev_close() for us. */
- if (dev) {
- unregister_netdev(dev);
- free_netdev(dev);
- }
+ ppp_lock(ppp);
+ if (!ppp->closing) {
+ ppp->closing = 1;
+ ppp_unlock(ppp);
+ unregister_netdev(ppp->dev);
+ } else
+ ppp_unlock(ppp);
+
cardmap_set(&all_ppp_units, ppp->file.index, NULL);
ppp->file.dead = 1;
ppp->owner = NULL;
@@ -2554,7 +2552,7 @@ static void ppp_destroy_interface(struct ppp *ppp)
if (ppp->xmit_pending)
kfree_skb(ppp->xmit_pending);
- kfree(ppp);
+ free_netdev(ppp->dev);
}
/*
@@ -2616,7 +2614,7 @@ ppp_connect_channel(struct channel *pch, int unit)
if (pch->file.hdrlen > ppp->file.hdrlen)
ppp->file.hdrlen = pch->file.hdrlen;
hdrlen = pch->file.hdrlen + 2; /* for protocol bytes */
- if (ppp->dev && hdrlen > ppp->dev->hard_header_len)
+ if (hdrlen > ppp->dev->hard_header_len)
ppp->dev->hard_header_len = hdrlen;
list_add_tail(&pch->clist, &ppp->channels);
++ppp->n_channels;