diff options
| author | KY Srinivasan <kys@microsoft.com> | 2014-03-08 19:23:16 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-10 15:51:37 -0400 |
| commit | e3d605ed441cf4d113f9a1cf9e1b3f7cabe0d781 (patch) | |
| tree | e339f94436e35b9b68eb84ba9fe80f3315206563 /drivers/net/hyperv/netvsc_drv.c | |
| parent | 4a0e70ae5e3858052f6d91564bf3484f1eb91dc7 (diff) | |
| download | lwn-e3d605ed441cf4d113f9a1cf9e1b3f7cabe0d781.tar.gz lwn-e3d605ed441cf4d113f9a1cf9e1b3f7cabe0d781.zip | |
Drivers: net: hyperv: Enable receive side IP checksum offload
Enable receive side checksum offload.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/hyperv/netvsc_drv.c')
| -rw-r--r-- | drivers/net/hyperv/netvsc_drv.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 7010c0630d24..9bee0650c7ca 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -391,7 +391,8 @@ void netvsc_linkstatus_callback(struct hv_device *device_obj, * "wire" on the specified device. */ int netvsc_recv_callback(struct hv_device *device_obj, - struct hv_netvsc_packet *packet) + struct hv_netvsc_packet *packet, + struct ndis_tcp_ip_checksum_info *csum_info) { struct net_device *net; struct sk_buff *skb; @@ -418,7 +419,17 @@ int netvsc_recv_callback(struct hv_device *device_obj, packet->total_data_buflen); skb->protocol = eth_type_trans(skb, net); - skb->ip_summed = CHECKSUM_NONE; + if (csum_info) { + /* We only look at the IP checksum here. + * Should we be dropping the packet if checksum + * failed? How do we deal with other checksums - TCP/UDP? + */ + if (csum_info->receive.ip_checksum_succeeded) + skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb->ip_summed = CHECKSUM_NONE; + } + if (packet->vlan_tci & VLAN_TAG_PRESENT) __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), packet->vlan_tci); @@ -578,8 +589,8 @@ static int netvsc_probe(struct hv_device *dev, net->netdev_ops = &device_ops; /* TODO: Add GSO and Checksum offload */ - net->hw_features = NETIF_F_SG; - net->features = NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_SG; + net->hw_features = NETIF_F_RXCSUM | NETIF_F_SG; + net->features = NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_SG | NETIF_F_RXCSUM; SET_ETHTOOL_OPS(net, ðtool_ops); SET_NETDEV_DEV(net, &dev->device); |