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authorAmit Kumar Salecha <amit.salecha@qlogic.com>2010-06-14 03:39:04 +0400
committerDavid S. Miller <davem@davemloft.net>2010-06-16 05:15:27 +0400
commit2227bae22becb88b75ede022c7bb991aabfb50bb (patch)
tree3dcf27270876df33598085282de81678d233acde /drivers/net/netxen
parentbf445080dad9542c6bc6b693d941cae89605134c (diff)
downloadlinux-2227bae22becb88b75ede022c7bb991aabfb50bb.tar.xz
netxen: fix rcv buffer leak
Rcv producer should be read in spin-lock. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netxen')
-rw-r--r--drivers/net/netxen/netxen_nic_init.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/net/netxen/netxen_nic_init.c b/drivers/net/netxen/netxen_nic_init.c
index e08527f4b301..c865dda2adf1 100644
--- a/drivers/net/netxen/netxen_nic_init.c
+++ b/drivers/net/netxen/netxen_nic_init.c
@@ -1805,9 +1805,10 @@ netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
netxen_ctx_msg msg = 0;
struct list_head *head;
+ spin_lock(&rds_ring->lock);
+
producer = rds_ring->producer;
- spin_lock(&rds_ring->lock);
head = &rds_ring->free_list;
while (!list_empty(head)) {
@@ -1829,7 +1830,6 @@ netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
producer = get_next_index(producer, rds_ring->num_desc);
}
- spin_unlock(&rds_ring->lock);
if (count) {
rds_ring->producer = producer;
@@ -1853,6 +1853,8 @@ netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ringid,
NETXEN_RCV_PRODUCER_OFFSET), msg);
}
}
+
+ spin_unlock(&rds_ring->lock);
}
static void
@@ -1864,10 +1866,11 @@ netxen_post_rx_buffers_nodb(struct netxen_adapter *adapter,
int producer, count = 0;
struct list_head *head;
- producer = rds_ring->producer;
if (!spin_trylock(&rds_ring->lock))
return;
+ producer = rds_ring->producer;
+
head = &rds_ring->free_list;
while (!list_empty(head)) {