diff options
| author | Paul Durrant <Paul.Durrant@citrix.com> | 2013-10-16 17:50:32 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-17 15:35:17 -0400 |
| commit | 82cada22a0bbec6a7afb573ef5fb6c512aaa2739 (patch) | |
| tree | 509d5a4bea1dc636885572a4c5d85e9e7bbce32b /drivers/net/xen-netback/interface.c | |
| parent | a94685876859be30446357db6d6c4a9c951305b4 (diff) | |
xen-netback: enable IPv6 TCP GSO to the guest
This patch adds code to handle SKB_GSO_TCPV6 skbs and construct appropriate
extra or prefix segments to pass the large packet to the frontend. New
xenstore flags, feature-gso-tcpv6 and feature-gso-tcpv6-prefix, are sampled
to determine if the frontend is capable of handling such packets.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/xen-netback/interface.c')
| -rw-r--r-- | drivers/net/xen-netback/interface.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c index cb0d8ea3d9f..e4aa26748f8 100644 --- a/drivers/net/xen-netback/interface.c +++ b/drivers/net/xen-netback/interface.c @@ -214,8 +214,10 @@ static netdev_features_t xenvif_fix_features(struct net_device *dev, if (!vif->can_sg) features &= ~NETIF_F_SG; - if (!vif->gso && !vif->gso_prefix) + if (~(vif->gso_mask | vif->gso_prefix_mask) & GSO_BIT(TCPV4)) features &= ~NETIF_F_TSO; + if (~(vif->gso_mask | vif->gso_prefix_mask) & GSO_BIT(TCPV6)) + features &= ~NETIF_F_TSO6; if (!vif->ip_csum) features &= ~NETIF_F_IP_CSUM; if (!vif->ipv6_csum) @@ -320,7 +322,7 @@ struct xenvif *xenvif_alloc(struct device *parent, domid_t domid, dev->netdev_ops = &xenvif_netdev_ops; dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | - NETIF_F_TSO; + NETIF_F_TSO | NETIF_F_TSO6; dev->features = dev->hw_features | NETIF_F_RXCSUM; SET_ETHTOOL_OPS(dev, &xenvif_ethtool_ops); |