From 53f6b708f89668cfb5eb9e49384b64b237bae0b2 Mon Sep 17 00:00:00 2001 From: Toshiaki Makita Date: Wed, 10 Dec 2014 11:43:13 +0900 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- net/8021q/vlan_dev.c | 7 ++++--- 1 file 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; -- 2.20.1