Drivers: net: hyperv: Enable large send offload

Enable segmentation 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>

1 files changed, 40 insertions, 0 deletions

diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 4cf238234321..7d06b4959383 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -742,6 +742,10 @@ struct ndis_oject_header {
 #define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
 #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
  */
@@ -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) + \
                 sizeof(struct ndis_pkt_8021q_info))
 
 #define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_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 */
 /* OID_GEN_RNDIS_CONFIG_PARAMETER. */
 struct rndis_config_parameter_info {