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be2net: Fix offload features for Q-in-Q packets

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[ 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@broadcom.com>
CC: Ajit Khaparde <ajit.khaparde@broadcom.com>
CC: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
CC: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vlad Yasevich 2017-05-23 13:38:42 -04:00 committed by Greg Kroah-Hartman
parent 5f595d5297
commit 9c6cfd5811
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/emulex/benet/be_main.c
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@ -5144,9 +5144,11 @@ static netdev_features_t be_features_check(struct sk_buff *skb,
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;