From: Vlad Yasevich <vyase...@redhat.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

[ Upstream commit 51dfe7b944998eaeb2b34d314f3a6b16a5fd621b ]

Including hardware acceleration features in vlan_features breaks
stacked vlans (Q-in-Q) by marking the bottom vlan interface as
capable of acceleration.  This causes one of the tags to be lost
and the packets are sent with a sing vlan header.

CC: Nithin Nayak Sujir <nsu...@broadcom.com>
CC: Michael Chan <mc...@broadcom.com>
Signed-off-by: Vlad Yasevich <vyase...@redhat.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
---
 drivers/net/ethernet/broadcom/tg3.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/tg3.c 
b/drivers/net/ethernet/broadcom/tg3.c
index 14a50a11d72e..aae7ba66e7bb 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -17480,8 +17480,6 @@ static int tg3_init_one(struct pci_dev *pdev,
 
        tg3_init_bufmgr_config(tp);
 
-       features |= NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
-
        /* 5700 B0 chips do not support checksumming correctly due
         * to hardware bugs.
         */
@@ -17513,7 +17511,8 @@ static int tg3_init_one(struct pci_dev *pdev,
                        features |= NETIF_F_TSO_ECN;
        }
 
-       dev->features |= features;
+       dev->features |= features | NETIF_F_HW_VLAN_CTAG_TX |
+                        NETIF_F_HW_VLAN_CTAG_RX;
        dev->vlan_features |= features;
 
        /*
-- 
1.9.2

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