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authorToshiaki Makita <makita.toshiaki@lab.ntt.co.jp>2014-12-10 11:43:13 +0900
committerDavid S. Miller <davem@davemloft.net>2014-12-12 10:58:53 -0500
commit53f6b708f89668cfb5eb9e49384b64b237bae0b2 (patch)
tree1189164adb4f6654cd99bfe4cafa38bfd8a9296b
parent5fbea33740aeb948422d7b7e8aafbeac362264b2 (diff)
vlan: Add ability to always enable TSO/UFO
Since the real device can segment packets by software, a vlan device can set TSO/UFO even when the real device doesn't have those features. Unlike GSO, this allows packets to be segmented after Qdisc. Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/8021q/vlan_dev.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 376805005cc7..118956448cf6 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -579,11 +579,12 @@ static int vlan_dev_init(struct net_device *dev)
(1<<__LINK_STATE_PRESENT);
dev->hw_features = NETIF_F_ALL_CSUM | NETIF_F_SG |
- NETIF_F_FRAGLIST | NETIF_F_ALL_TSO |
+ NETIF_F_FRAGLIST | NETIF_F_GSO_SOFTWARE |
NETIF_F_HIGHDMA | NETIF_F_SCTP_CSUM |
NETIF_F_ALL_FCOE;
- dev->features |= real_dev->vlan_features | NETIF_F_LLTX;
+ dev->features |= real_dev->vlan_features | NETIF_F_LLTX |
+ NETIF_F_GSO_SOFTWARE;
dev->gso_max_size = real_dev->gso_max_size;
if (dev->features & NETIF_F_VLAN_FEATURES)
netdev_warn(real_dev, "VLAN features are set incorrectly. Q-in-Q configurations may not work correctly.\n");
@@ -648,7 +649,7 @@ static netdev_features_t vlan_dev_fix_features(struct net_device *dev,
features |= NETIF_F_RXCSUM;
features = netdev_intersect_features(features, real_dev->features);
- features |= old_features & NETIF_F_SOFT_FEATURES;
+ features |= old_features & (NETIF_F_SOFT_FEATURES | NETIF_F_GSO_SOFTWARE);
features |= NETIF_F_LLTX;
return features;

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