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Commit 4a0e70ae authored by KY Srinivasan's avatar KY Srinivasan Committed by David S. Miller
Browse files

Drivers: net: hyperv: Enable offloads on the host 



Prior to enabling guest side offloads, enable the offloads on the host.

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 8a00251a

drivers/net/hyperv/hyperv_net.h

+55 −0
Original line number Diff line number Diff line
@@ -721,6 +721,61 @@ struct ndis_pkt_8021q_info { 
	};

};



struct ndis_oject_header {

	u8 type;

	u8 revision;

	u16 size;

};



#define NDIS_OBJECT_TYPE_DEFAULT	0x80

#define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3

#define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0

#define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1

#define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED  2

#define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED  2

#define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1

#define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2

#define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1

#define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2

#define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3

#define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4



/*

 * New offload OIDs for NDIS 6

 */

#define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */

#define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C		/* set only */

#define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */

#define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */

#define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */

#define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */



struct ndis_offload_params {

	struct ndis_oject_header header;

	u8 ip_v4_csum;

	u8 tcp_ip_v4_csum;

	u8 udp_ip_v4_csum;

	u8 tcp_ip_v6_csum;

	u8 udp_ip_v6_csum;

	u8 lso_v1;

	u8 ip_sec_v1;

	u8 lso_v2_ipv4;

	u8 lso_v2_ipv6;

	u8 tcp_connection_ip_v4;

	u8 tcp_connection_ip_v6;

	u32 flags;

	u8 ip_sec_v2;

	u8 ip_sec_v2_ip_v4;

	struct {

		u8 rsc_ip_v4;

		u8 rsc_ip_v6;

	};

	struct {

		u8 encapsulated_packet_task_offload;

		u8 encapsulation_types;

	};

};



#define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \

		sizeof(struct ndis_pkt_8021q_info))

drivers/net/hyperv/rndis_filter.c

+80 −0
Original line number Diff line number Diff line
@@ -607,6 +607,61 @@ cleanup: 
	return ret;

}



int rndis_filter_set_offload_params(struct hv_device *hdev,

				struct ndis_offload_params *req_offloads)

{

	struct netvsc_device *nvdev = hv_get_drvdata(hdev);

	struct rndis_device *rdev = nvdev->extension;

	struct net_device *ndev = nvdev->ndev;

	struct rndis_request *request;

	struct rndis_set_request *set;

	struct ndis_offload_params *offload_params;

	struct rndis_set_complete *set_complete;

	u32 extlen = sizeof(struct ndis_offload_params);

	int ret, t;



	request = get_rndis_request(rdev, RNDIS_MSG_SET,

		RNDIS_MESSAGE_SIZE(struct rndis_set_request) + extlen);

	if (!request)

		return -ENOMEM;



	set = &request->request_msg.msg.set_req;

	set->oid = OID_TCP_OFFLOAD_PARAMETERS;

	set->info_buflen = extlen;

	set->info_buf_offset = sizeof(struct rndis_set_request);

	set->dev_vc_handle = 0;



	offload_params = (struct ndis_offload_params *)((ulong)set +

				set->info_buf_offset);

	*offload_params = *req_offloads;

	offload_params->header.type = NDIS_OBJECT_TYPE_DEFAULT;

	offload_params->header.revision = NDIS_OFFLOAD_PARAMETERS_REVISION_3;

	offload_params->header.size = extlen;



	ret = rndis_filter_send_request(rdev, request);

	if (ret != 0)

		goto cleanup;



	t = wait_for_completion_timeout(&request->wait_event, 5*HZ);

	if (t == 0) {

		netdev_err(ndev, "timeout before we got aOFFLOAD set response...\n");

		/* can't put_rndis_request, since we may still receive a

		 * send-completion.

		 */

		return -EBUSY;

	} else {

		set_complete = &request->response_msg.msg.set_complete;

		if (set_complete->status != RNDIS_STATUS_SUCCESS) {

			netdev_err(ndev, "Fail to set MAC on host side:0x%x\n",

				   set_complete->status);

			ret = -EINVAL;

		}

	}



cleanup:

	put_rndis_request(rdev, request);

	return ret;

}



static int rndis_filter_query_device_link_status(struct rndis_device *dev)

{
@@ -807,6 +862,7 @@ int rndis_filter_device_add(struct hv_device *dev, 
	struct netvsc_device *net_device;

	struct rndis_device *rndis_device;

	struct netvsc_device_info *device_info = additional_info;

	struct ndis_offload_params offloads;



	rndis_device = get_rndis_device();

	if (!rndis_device)
@@ -846,6 +902,26 @@ int rndis_filter_device_add(struct hv_device *dev, 


	memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN);



	/* Turn on the offloads; the host supports all of the relevant

	 * offloads.

	 */

	memset(&offloads, 0, sizeof(struct ndis_offload_params));

	/* A value of zero means "no change"; now turn on what we

	 * want.

	 */

	offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;

	offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;

	offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;

	offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;

	offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;

	offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED;





	ret = rndis_filter_set_offload_params(dev, &offloads);

	if (ret)

		goto err_dev_remv;





	rndis_filter_query_device_link_status(rndis_device);



	device_info->link_state = rndis_device->link_state;
@@ -855,6 +931,10 @@ int rndis_filter_device_add(struct hv_device *dev, 
		 device_info->link_state ? "down" : "up");



	return ret;



err_dev_remv:

	rndis_filter_device_remove(dev);

	return ret;

}



void rndis_filter_device_remove(struct hv_device *dev)