Drivers: net: hyperv: Enable receive side IP checksum offload (e3d605ed) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/net/hyperv/hyperv_net.h

+32 −1

Original line number	Diff line number	Diff line
		@@ -30,6 +30,7 @@

		/* Fwd declaration */
		struct hv_netvsc_packet;
		struct ndis_tcp_ip_checksum_info;

		/* Represent the xfer page packet which contains 1 or more netvsc packet */
		struct xferpage_packet {
		@@ -117,7 +118,8 @@ int netvsc_send(struct hv_device *device,
		void netvsc_linkstatus_callback(struct hv_device *device_obj,
		unsigned int status);
		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);
		int rndis_filter_open(struct hv_device *dev);
		int rndis_filter_close(struct hv_device *dev);
		int rndis_filter_device_add(struct hv_device *dev,
		@@ -776,9 +778,38 @@ struct ndis_offload_params {
		};
		};

		struct ndis_tcp_ip_checksum_info {
		union {
		struct {
		u32 is_ipv4:1;
		u32 is_ipv6:1;
		u32 tcp_checksum:1;
		u32 udp_checksum:1;
		u32 ip_header_checksum:1;
		u32 reserved:11;
		u32 tcp_header_offset:10;
		} transmit;
		struct {
		u32 tcp_checksum_failed:1;
		u32 udp_checksum_failed:1;
		u32 ip_checksum_failed:1;
		u32 tcp_checksum_succeeded:1;
		u32 udp_checksum_succeeded:1;
		u32 ip_checksum_succeeded:1;
		u32 loopback:1;
		u32 tcp_checksum_value_invalid:1;
		u32 ip_checksum_value_invalid:1;
		} receive;
		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))

		/* Format of Information buffer passed in a SetRequest for the OID */
		/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
		struct rndis_config_parameter_info {

drivers/net/hyperv/netvsc_drv.c

+15 −4

Original line number	Diff line number	Diff line
		@@ -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);
		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, &ethtool_ops);
		SET_NETDEV_DEV(net, &dev->device);

drivers/net/hyperv/rndis_filter.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -350,6 +350,7 @@ static void rndis_filter_receive_data(struct rndis_device *dev,
		struct rndis_packet *rndis_pkt;
		u32 data_offset;
		struct ndis_pkt_8021q_info *vlan;
		struct ndis_tcp_ip_checksum_info *csum_info;

		rndis_pkt = &msg->msg.pkt;

		@@ -388,7 +389,8 @@ static void rndis_filter_receive_data(struct rndis_device *dev,
		pkt->vlan_tci = 0;
		}

		netvsc_recv_callback(dev->net_dev->dev, pkt);
		csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO);
		netvsc_recv_callback(dev->net_dev->dev, pkt, csum_info);
		}

		int rndis_filter_receive(struct hv_device *dev,