Linux 3.1 adds a flag to check whether it's OK for shared skbs to
be transmitted on devices. This generally isn't a problem for
hardware devices but software devices such as OVS that hold state
in the skb need to clear the flag, which is enabled by default.
Signed-off-by: Jesse Gross <je...@nicira.com>
---
datapath/linux/compat/include/linux/if.h | 4 ++++
datapath/vport-internal_dev.c | 1 +
2 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/datapath/linux/compat/include/linux/if.h
b/datapath/linux/compat/include/linux/if.h
index 43128b7..5ea620d 100644
--- a/datapath/linux/compat/include/linux/if.h
+++ b/datapath/linux/compat/include/linux/if.h
@@ -10,6 +10,10 @@
#endif /* linux kernel < 2.6.31 */
+#ifndef IFF_TX_SKB_SHARING
+#define IFF_TX_SKB_SHARING 0
+#endif
+
#if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,36)
#define IFF_OVS_DATAPATH IFF_BRIDGE_PORT
#elif LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36)
diff --git a/datapath/vport-internal_dev.c b/datapath/vport-internal_dev.c
index 2d46343..a468ac8 100644
--- a/datapath/vport-internal_dev.c
+++ b/datapath/vport-internal_dev.c
@@ -171,6 +171,7 @@ static void do_setup(struct net_device *netdev)
netdev->change_mtu = internal_dev_change_mtu;
#endif
+ netdev->priv_flags &= ~IFF_TX_SKB_SHARING;
netdev->destructor = internal_dev_destructor;
SET_ETHTOOL_OPS(netdev, &internal_dev_ethtool_ops);
netdev->tx_queue_len = 0;
--
1.7.5.4
_______________________________________________
dev mailing list
dev@openvswitch.org
http://openvswitch.org/mailman/listinfo/dev
