From 2227bae22becb88b75ede022c7bb991aabfb50bb Mon Sep 17 00:00:00 2001
From: Amit Kumar Salecha <amit.salecha@qlogic.com>
Date: Sun, 13 Jun 2010 23:39:04 +0000
Subject: [PATCH] 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>
---
drivers/net/netxen/netxen_nic_init.c | 9 ++++++---
1 file 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)) {
--
GitLab