4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vlad Yasevich <vyasevich@xxxxxxxxx> [ Upstream commit cc6e9de62a7f84c9293a2ea41bc412b55bb46e85 ] At least some of the be2net cards do not seem to be capabled of performing checksum offload computions on Q-in-Q packets. In these case, the recevied checksum on the remote is invalid and TCP syn packets are dropped. This patch adds a call to check disbled acceleration features on Q-in-Q tagged traffic. CC: Sathya Perla <sathya.perla@xxxxxxxxxxxx> CC: Ajit Khaparde <ajit.khaparde@xxxxxxxxxxxx> CC: Sriharsha Basavapatna <sriharsha.basavapatna@xxxxxxxxxxxx> CC: Somnath Kotur <somnath.kotur@xxxxxxxxxxxx> Signed-off-by: Vladislav Yasevich <vyasevic@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/ethernet/emulex/benet/be_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -5260,9 +5260,11 @@ static netdev_features_t be_features_che struct be_adapter *adapter = netdev_priv(dev); u8 l4_hdr = 0; - /* The code below restricts offload features for some tunneled packets. + /* The code below restricts offload features for some tunneled and + * Q-in-Q packets. * Offload features for normal (non tunnel) packets are unchanged. */ + features = vlan_features_check(skb, features); if (!skb->encapsulation || !(adapter->flags & BE_FLAGS_VXLAN_OFFLOADS)) return features;