Commit 77bf5487 authored by KY Srinivasan's avatar KY Srinivasan Committed by David S. Miller

Drivers: net: hyperv: Enable large send offload

Enable segmentation offload.
Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 08cd04bf
...@@ -742,6 +742,10 @@ struct ndis_oject_header { ...@@ -742,6 +742,10 @@ struct ndis_oject_header {
#define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3 #define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
#define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4 #define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
#define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE 1
#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4 0
#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6 1
/* /*
* New offload OIDs for NDIS 6 * New offload OIDs for NDIS 6
*/ */
...@@ -804,12 +808,48 @@ struct ndis_tcp_ip_checksum_info { ...@@ -804,12 +808,48 @@ struct ndis_tcp_ip_checksum_info {
}; };
}; };
struct ndis_tcp_lso_info {
union {
struct {
u32 unused:30;
u32 type:1;
u32 reserved2:1;
} transmit;
struct {
u32 mss:20;
u32 tcp_header_offset:10;
u32 type:1;
u32 reserved2:1;
} lso_v1_transmit;
struct {
u32 tcp_payload:30;
u32 type:1;
u32 reserved2:1;
} lso_v1_transmit_complete;
struct {
u32 mss:20;
u32 tcp_header_offset:10;
u32 type:1;
u32 ip_version:1;
} lso_v2_transmit;
struct {
u32 reserved:30;
u32 type:1;
u32 reserved2:1;
} lso_v2_transmit_complete;
u32 value;
};
};
#define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \ #define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
sizeof(struct ndis_pkt_8021q_info)) sizeof(struct ndis_pkt_8021q_info))
#define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \ #define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
sizeof(struct ndis_tcp_ip_checksum_info)) sizeof(struct ndis_tcp_ip_checksum_info))
#define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
sizeof(struct ndis_tcp_lso_info))
/* Format of Information buffer passed in a SetRequest for the OID */ /* Format of Information buffer passed in a SetRequest for the OID */
/* OID_GEN_RNDIS_CONFIG_PARAMETER. */ /* OID_GEN_RNDIS_CONFIG_PARAMETER. */
struct rndis_config_parameter_info { struct rndis_config_parameter_info {
......
...@@ -298,6 +298,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) ...@@ -298,6 +298,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
bool isvlan; bool isvlan;
struct rndis_per_packet_info *ppi; struct rndis_per_packet_info *ppi;
struct ndis_tcp_ip_checksum_info *csum_info; struct ndis_tcp_ip_checksum_info *csum_info;
struct ndis_tcp_lso_info *lso_info;
int hdr_offset; int hdr_offset;
u32 net_trans_info; u32 net_trans_info;
...@@ -377,7 +378,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) ...@@ -377,7 +378,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
* GSO packet. * GSO packet.
*/ */
if (skb_is_gso(skb)) if (skb_is_gso(skb))
goto do_send; goto do_lso;
rndis_msg_size += NDIS_CSUM_PPI_SIZE; rndis_msg_size += NDIS_CSUM_PPI_SIZE;
ppi = init_ppi_data(rndis_msg, NDIS_CSUM_PPI_SIZE, ppi = init_ppi_data(rndis_msg, NDIS_CSUM_PPI_SIZE,
...@@ -397,6 +398,35 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net) ...@@ -397,6 +398,35 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
} else if (net_trans_info & INFO_UDP) { } else if (net_trans_info & INFO_UDP) {
csum_info->transmit.udp_checksum = 1; csum_info->transmit.udp_checksum = 1;
} }
goto do_send;
do_lso:
rndis_msg_size += NDIS_LSO_PPI_SIZE;
ppi = init_ppi_data(rndis_msg, NDIS_LSO_PPI_SIZE,
TCP_LARGESEND_PKTINFO);
lso_info = (struct ndis_tcp_lso_info *)((void *)ppi +
ppi->ppi_offset);
lso_info->lso_v2_transmit.type = NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE;
if (net_trans_info & (INFO_IPV4 << 16)) {
lso_info->lso_v2_transmit.ip_version =
NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4;
ip_hdr(skb)->tot_len = 0;
ip_hdr(skb)->check = 0;
tcp_hdr(skb)->check =
~csum_tcpudp_magic(ip_hdr(skb)->saddr,
ip_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
} else {
lso_info->lso_v2_transmit.ip_version =
NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6;
ipv6_hdr(skb)->payload_len = 0;
tcp_hdr(skb)->check =
~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
}
lso_info->lso_v2_transmit.tcp_header_offset = hdr_offset;
lso_info->lso_v2_transmit.mss = skb_shinfo(skb)->gso_size;
do_send: do_send:
/* Start filling in the page buffers with the rndis hdr */ /* Start filling in the page buffers with the rndis hdr */
...@@ -652,10 +682,10 @@ static int netvsc_probe(struct hv_device *dev, ...@@ -652,10 +682,10 @@ static int netvsc_probe(struct hv_device *dev,
net->netdev_ops = &device_ops; net->netdev_ops = &device_ops;
/* TODO: Add GSO and Checksum offload */ net->hw_features = NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_IP_CSUM |
net->hw_features = NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_IP_CSUM; NETIF_F_TSO;
net->features = NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_SG | NETIF_F_RXCSUM | net->features = NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_SG | NETIF_F_RXCSUM |
NETIF_F_IP_CSUM; NETIF_F_IP_CSUM | NETIF_F_TSO;
SET_ETHTOOL_OPS(net, &ethtool_ops); SET_ETHTOOL_OPS(net, &ethtool_ops);
SET_NETDEV_DEV(net, &dev->device); SET_NETDEV_DEV(net, &dev->device);
......
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