Signed-off-by: Pravin B Shelar <[email protected]>
---
drivers/net/vxlan.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 8faaeb8..983a239 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -638,6 +638,21 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct
net_device *dev)
__u8 tos, ttl;
int err;
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ /* Pages aren't locked and could change at any time.
+ * If this happens after we compute the checksum, the
+ * checksum will be wrong. We linearize now to avoid
+ * this problem.
+ */
+ err = __skb_linearize(skb);
+ if (unlikely(err))
+ goto drop;
+
+ err = skb_checksum_help(skb);
+ if (unlikely(err))
+ goto drop;
+ }
+
dst = vxlan_find_dst(vxlan, skb);
if (!dst)
goto drop;
@@ -869,6 +884,11 @@ static void vxlan_free(struct net_device *dev)
free_netdev(dev);
}
+#define VXLAN_FEATURES (NETIF_F_SG | \
+ NETIF_F_FRAGLIST | \
+ NETIF_F_HIGHDMA | \
+ NETIF_F_HW_CSUM)
+
/* Initialize the device structure. */
static void vxlan_setup(struct net_device *dev)
{
@@ -888,6 +908,8 @@ static void vxlan_setup(struct net_device *dev)
dev->features |= NETIF_F_LLTX;
dev->features |= NETIF_F_NETNS_LOCAL;
dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
+ dev->features |= VXLAN_FEATURES;
+ dev->hw_features |= VXLAN_FEATURES;
spin_lock_init(&vxlan->hash_lock);
--
1.7.10
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