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Message-Id: <20111202.215222.1786543714107371836.davem@davemloft.net>
Date: Fri, 02 Dec 2011 21:52:22 -0500 (EST)
From: David Miller <davem@...emloft.net>
To: roland@...nel.org
CC: netdev@...r.kernel.org
Subject: [PATCH 4/9] cxgb3: Handle NULL dst neighbour in cxgb3_offload.c
Signed-off-by: David S. Miller <davem@...emloft.net>
---
drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c | 18 +++++++++++++++---
1 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c
index 596cfe3..65e4b28 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_offload.c
@@ -1072,8 +1072,11 @@ static int is_offloading(struct net_device *dev)
static void cxgb_neigh_update(struct neighbour *neigh)
{
- struct net_device *dev = neigh->dev;
+ struct net_device *dev;
+ if (!neigh)
+ return;
+ dev = neigh->dev;
if (dev && (is_offloading(dev))) {
struct t3cdev *tdev = dev2t3cdev(dev);
@@ -1107,6 +1110,7 @@ static void set_l2t_ix(struct t3cdev *tdev, u32 tid, struct l2t_entry *e)
static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
{
struct net_device *olddev, *newdev;
+ struct neighbour *n;
struct tid_info *ti;
struct t3cdev *tdev;
u32 tid;
@@ -1114,8 +1118,16 @@ static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
struct l2t_entry *e;
struct t3c_tid_entry *te;
- olddev = dst_get_neighbour_noref(old)->dev;
- newdev = dst_get_neighbour_noref(new)->dev;
+ n = dst_get_neighbour_noref(old);
+ if (!n)
+ return;
+ olddev = n->dev;
+
+ n = dst_get_neighbour_noref(new);
+ if (!n)
+ return;
+ newdev = n->dev;
+
if (!is_offloading(olddev))
return;
if (!is_offloading(newdev)) {
--
1.7.7.3
--
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