From: Guillaume Gaudonville <guillaume.gaudonville@6wind.com>
In driver ixgbe, ixgbe_atr may cause crashes for non-ipv4 packets. Just
add a test to check skb->protocol. It may crash on short packets due
to ip_hdr() access.
Signed-off-by: Guillaume Gaudonville <guillaume.gaudonville@6wind.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
drivers/net/ixgbe/ixgbe_main.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 7ddd60e..a0b3316 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -6024,7 +6024,6 @@ static void ixgbe_tx_queue(struct ixgbe_adapter *adapter,
static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
int queue, u32 tx_flags)
{
- /* Right now, we support IPv4 only */
struct ixgbe_atr_input atr_input;
struct tcphdr *th;
struct iphdr *iph = ip_hdr(skb);
@@ -6033,6 +6032,9 @@ static void ixgbe_atr(struct ixgbe_adapter *adapter, struct sk_buff *skb,
u32 src_ipv4_addr, dst_ipv4_addr;
u8 l4type = 0;
+ /* Right now, we support IPv4 only */
+ if (skb->protocol != htons(ETH_P_IP))
+ return;
/* check if we're UDP or TCP */
if (iph->protocol == IPPROTO_TCP) {
th = tcp_hdr(skb);
--
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