@@ -3449,4 +3449,6 @@ config VMXNET3
To compile this driver as a module, choose M here: the
module will be called vmxnet3.
+source "drivers/net/hyperv/Kconfig"
+
endif # NETDEVICES
@@ -306,3 +306,4 @@ obj-$(CONFIG_CAIF) += caif/
obj-$(CONFIG_OCTEON_MGMT_ETHERNET) += octeon/
obj-$(CONFIG_PCH_GBE) += pch_gbe/
obj-$(CONFIG_TILE_NET) += tile/
+obj-$(CONFIG_HYPERV_NET) += hyperv/
new file mode 100644
@@ -0,0 +1,10 @@
+if HYPERV
+
+config HYPERV_NET
+ tristate "Microsoft Hyper-V virtual network driver"
+ depends on NET
+ default HYPERV
+ help
+ Select this option to enable the Hyper-V virtual network driver.
+
+endif
new file mode 100644
@@ -0,0 +1,4 @@
+obj-$(CONFIG_HYPERV_NET) += hv_netvsc.o
+
+hv_netvsc-y := netvsc_drv.o netvsc.o rndis_filter.o
+
new file mode 100644
@@ -0,0 +1,1057 @@
+/*
+ *
+ * Copyright (c) 2011, Microsoft Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Authors:
+ * Haiyang Zhang <haiyangz@microsoft.com>
+ * Hank Janssen <hjanssen@microsoft.com>
+ * K. Y. Srinivasan <kys@microsoft.com>
+ *
+ */
+
+#ifndef _HYPERV_NET_H
+#define _HYPERV_NET_H
+
+#include <linux/list.h>
+#include "../../staging/hv/hyperv.h"
+
+/* Fwd declaration */
+struct hv_netvsc_packet;
+
+/* Represent the xfer page packet which contains 1 or more netvsc packet */
+struct xferpage_packet {
+ struct list_head list_ent;
+
+ /* # of netvsc packets this xfer packet contains */
+ u32 count;
+};
+
+/* The number of pages which are enough to cover jumbo frame buffer. */
+#define NETVSC_PACKET_MAXPAGE 4
+
+/*
+ * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
+ * within the RNDIS
+ */
+struct hv_netvsc_packet {
+ /* Bookkeeping stuff */
+ struct list_head list_ent;
+
+ struct hv_device *device;
+ bool is_data_pkt;
+
+ /*
+ * Valid only for receives when we break a xfer page packet
+ * into multiple netvsc packets
+ */
+ struct xferpage_packet *xfer_page_pkt;
+
+ union {
+ struct {
+ u64 recv_completion_tid;
+ void *recv_completion_ctx;
+ void (*recv_completion)(void *context);
+ } recv;
+ struct {
+ u64 send_completion_tid;
+ void *send_completion_ctx;
+ void (*send_completion)(void *context);
+ } send;
+ } completion;
+
+ /* This points to the memory after page_buf */
+ void *extension;
+
+ u32 total_data_buflen;
+ /* Points to the send/receive buffer where the ethernet frame is */
+ u32 page_buf_cnt;
+ struct hv_page_buffer page_buf[NETVSC_PACKET_MAXPAGE];
+};
+
+struct netvsc_device_info {
+ unsigned char mac_adr[6];
+ bool link_state; /* 0 - link up, 1 - link down */
+ int ring_size;
+};
+
+/* Interface */
+int netvsc_device_add(struct hv_device *device, void *additional_info);
+int netvsc_device_remove(struct hv_device *device);
+int netvsc_send(struct hv_device *device,
+ struct hv_netvsc_packet *packet);
+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);
+int netvsc_initialize(struct hv_driver *drv);
+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,
+ void *additional_info);
+void rndis_filter_device_remove(struct hv_device *dev);
+int rndis_filter_receive(struct hv_device *dev,
+ struct hv_netvsc_packet *pkt);
+
+
+
+int rndis_filter_send(struct hv_device *dev,
+ struct hv_netvsc_packet *pkt);
+
+#define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
+
+#define NVSP_PROTOCOL_VERSION_1 2
+#define NVSP_MIN_PROTOCOL_VERSION NVSP_PROTOCOL_VERSION_1
+#define NVSP_MAX_PROTOCOL_VERSION NVSP_PROTOCOL_VERSION_1
+
+enum {
+ NVSP_MSG_TYPE_NONE = 0,
+
+ /* Init Messages */
+ NVSP_MSG_TYPE_INIT = 1,
+ NVSP_MSG_TYPE_INIT_COMPLETE = 2,
+
+ NVSP_VERSION_MSG_START = 100,
+
+ /* Version 1 Messages */
+ NVSP_MSG1_TYPE_SEND_NDIS_VER = NVSP_VERSION_MSG_START,
+
+ NVSP_MSG1_TYPE_SEND_RECV_BUF,
+ NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
+ NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
+
+ NVSP_MSG1_TYPE_SEND_SEND_BUF,
+ NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
+ NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
+
+ NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
+ NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
+
+ /*
+ * This should be set to the number of messages for the version with
+ * the maximum number of messages.
+ */
+ NVSP_NUM_MSG_PER_VERSION = 9,
+};
+
+enum {
+ NVSP_STAT_NONE = 0,
+ NVSP_STAT_SUCCESS,
+ NVSP_STAT_FAIL,
+ NVSP_STAT_PROTOCOL_TOO_NEW,
+ NVSP_STAT_PROTOCOL_TOO_OLD,
+ NVSP_STAT_INVALID_RNDIS_PKT,
+ NVSP_STAT_BUSY,
+ NVSP_STAT_MAX,
+};
+
+struct nvsp_message_header {
+ u32 msg_type;
+};
+
+/* Init Messages */
+
+/*
+ * This message is used by the VSC to initialize the channel after the channels
+ * has been opened. This message should never include anything other then
+ * versioning (i.e. this message will be the same for ever).
+ */
+struct nvsp_message_init {
+ u32 min_protocol_ver;
+ u32 max_protocol_ver;
+} __packed;
+
+/*
+ * This message is used by the VSP to complete the initialization of the
+ * channel. This message should never include anything other then versioning
+ * (i.e. this message will be the same for ever).
+ */
+struct nvsp_message_init_complete {
+ u32 negotiated_protocol_ver;
+ u32 max_mdl_chain_len;
+ u32 status;
+} __packed;
+
+union nvsp_message_init_uber {
+ struct nvsp_message_init init;
+ struct nvsp_message_init_complete init_complete;
+} __packed;
+
+/* Version 1 Messages */
+
+/*
+ * This message is used by the VSC to send the NDIS version to the VSP. The VSP
+ * can use this information when handling OIDs sent by the VSC.
+ */
+struct nvsp_1_message_send_ndis_version {
+ u32 ndis_major_ver;
+ u32 ndis_minor_ver;
+} __packed;
+
+/*
+ * This message is used by the VSC to send a receive buffer to the VSP. The VSP
+ * can then use the receive buffer to send data to the VSC.
+ */
+struct nvsp_1_message_send_receive_buffer {
+ u32 gpadl_handle;
+ u16 id;
+} __packed;
+
+struct nvsp_1_receive_buffer_section {
+ u32 offset;
+ u32 sub_alloc_size;
+ u32 num_sub_allocs;
+ u32 end_offset;
+} __packed;
+
+/*
+ * This message is used by the VSP to acknowledge a receive buffer send by the
+ * VSC. This message must be sent by the VSP before the VSP uses the receive
+ * buffer.
+ */
+struct nvsp_1_message_send_receive_buffer_complete {
+ u32 status;
+ u32 num_sections;
+
+ /*
+ * The receive buffer is split into two parts, a large suballocation
+ * section and a small suballocation section. These sections are then
+ * suballocated by a certain size.
+ */
+
+ /*
+ * For example, the following break up of the receive buffer has 6
+ * large suballocations and 10 small suballocations.
+ */
+
+ /*
+ * | Large Section | | Small Section |
+ * ------------------------------------------------------------
+ * | | | | | | | | | | | | | | | | | |
+ * | |
+ * LargeOffset SmallOffset
+ */
+
+ struct nvsp_1_receive_buffer_section sections[1];
+} __packed;
+
+/*
+ * This message is sent by the VSC to revoke the receive buffer. After the VSP
+ * completes this transaction, the vsp should never use the receive buffer
+ * again.
+ */
+struct nvsp_1_message_revoke_receive_buffer {
+ u16 id;
+};
+
+/*
+ * This message is used by the VSC to send a send buffer to the VSP. The VSC
+ * can then use the send buffer to send data to the VSP.
+ */
+struct nvsp_1_message_send_send_buffer {
+ u32 gpadl_handle;
+ u16 id;
+} __packed;
+
+/*
+ * This message is used by the VSP to acknowledge a send buffer sent by the
+ * VSC. This message must be sent by the VSP before the VSP uses the sent
+ * buffer.
+ */
+struct nvsp_1_message_send_send_buffer_complete {
+ u32 status;
+
+ /*
+ * The VSC gets to choose the size of the send buffer and the VSP gets
+ * to choose the sections size of the buffer. This was done to enable
+ * dynamic reconfigurations when the cost of GPA-direct buffers
+ * decreases.
+ */
+ u32 section_size;
+} __packed;
+
+/*
+ * This message is sent by the VSC to revoke the send buffer. After the VSP
+ * completes this transaction, the vsp should never use the send buffer again.
+ */
+struct nvsp_1_message_revoke_send_buffer {
+ u16 id;
+};
+
+/*
+ * This message is used by both the VSP and the VSC to send a RNDIS message to
+ * the opposite channel endpoint.
+ */
+struct nvsp_1_message_send_rndis_packet {
+ /*
+ * This field is specified by RNIDS. They assume there's two different
+ * channels of communication. However, the Network VSP only has one.
+ * Therefore, the channel travels with the RNDIS packet.
+ */
+ u32 channel_type;
+
+ /*
+ * This field is used to send part or all of the data through a send
+ * buffer. This values specifies an index into the send buffer. If the
+ * index is 0xFFFFFFFF, then the send buffer is not being used and all
+ * of the data was sent through other VMBus mechanisms.
+ */
+ u32 send_buf_section_index;
+ u32 send_buf_section_size;
+} __packed;
+
+/*
+ * This message is used by both the VSP and the VSC to complete a RNDIS message
+ * to the opposite channel endpoint. At this point, the initiator of this
+ * message cannot use any resources associated with the original RNDIS packet.
+ */
+struct nvsp_1_message_send_rndis_packet_complete {
+ u32 status;
+};
+
+union nvsp_1_message_uber {
+ struct nvsp_1_message_send_ndis_version send_ndis_ver;
+
+ struct nvsp_1_message_send_receive_buffer send_recv_buf;
+ struct nvsp_1_message_send_receive_buffer_complete
+ send_recv_buf_complete;
+ struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
+
+ struct nvsp_1_message_send_send_buffer send_send_buf;
+ struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
+ struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
+
+ struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
+ struct nvsp_1_message_send_rndis_packet_complete
+ send_rndis_pkt_complete;
+} __packed;
+
+union nvsp_all_messages {
+ union nvsp_message_init_uber init_msg;
+ union nvsp_1_message_uber v1_msg;
+} __packed;
+
+/* ALL Messages */
+struct nvsp_message {
+ struct nvsp_message_header hdr;
+ union nvsp_all_messages msg;
+} __packed;
+
+
+
+
+/* #define NVSC_MIN_PROTOCOL_VERSION 1 */
+/* #define NVSC_MAX_PROTOCOL_VERSION 1 */
+
+#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024) /* 1MB */
+
+#define NETVSC_RECEIVE_BUFFER_ID 0xcafe
+
+#define NETVSC_RECEIVE_SG_COUNT 1
+
+/* Preallocated receive packets */
+#define NETVSC_RECEIVE_PACKETLIST_COUNT 256
+
+#define NETVSC_PACKET_SIZE 2048
+
+/* Per netvsc channel-specific */
+struct netvsc_device {
+ struct hv_device *dev;
+
+ atomic_t refcnt;
+ atomic_t num_outstanding_sends;
+ /*
+ * List of free preallocated hv_netvsc_packet to represent receive
+ * packet
+ */
+ struct list_head recv_pkt_list;
+ spinlock_t recv_pkt_list_lock;
+
+ /* Receive buffer allocated by us but manages by NetVSP */
+ void *recv_buf;
+ u32 recv_buf_size;
+ u32 recv_buf_gpadl_handle;
+ u32 recv_section_cnt;
+ struct nvsp_1_receive_buffer_section *recv_section;
+
+ /* Used for NetVSP initialization protocol */
+ struct completion channel_init_wait;
+ struct nvsp_message channel_init_pkt;
+
+ struct nvsp_message revoke_packet;
+ /* unsigned char HwMacAddr[HW_MACADDR_LEN]; */
+
+ /* Holds rndis device info */
+ void *extension;
+};
+
+
+/* Status codes */
+
+
+#ifndef STATUS_SUCCESS
+#define STATUS_SUCCESS (0x00000000L)
+#endif
+
+#ifndef STATUS_UNSUCCESSFUL
+#define STATUS_UNSUCCESSFUL (0xC0000001L)
+#endif
+
+#ifndef STATUS_PENDING
+#define STATUS_PENDING (0x00000103L)
+#endif
+
+#ifndef STATUS_INSUFFICIENT_RESOURCES
+#define STATUS_INSUFFICIENT_RESOURCES (0xC000009AL)
+#endif
+
+#ifndef STATUS_BUFFER_OVERFLOW
+#define STATUS_BUFFER_OVERFLOW (0x80000005L)
+#endif
+
+#ifndef STATUS_NOT_SUPPORTED
+#define STATUS_NOT_SUPPORTED (0xC00000BBL)
+#endif
+
+#define RNDIS_STATUS_SUCCESS (STATUS_SUCCESS)
+#define RNDIS_STATUS_PENDING (STATUS_PENDING)
+#define RNDIS_STATUS_NOT_RECOGNIZED (0x00010001L)
+#define RNDIS_STATUS_NOT_COPIED (0x00010002L)
+#define RNDIS_STATUS_NOT_ACCEPTED (0x00010003L)
+#define RNDIS_STATUS_CALL_ACTIVE (0x00010007L)
+
+#define RNDIS_STATUS_ONLINE (0x40010003L)
+#define RNDIS_STATUS_RESET_START (0x40010004L)
+#define RNDIS_STATUS_RESET_END (0x40010005L)
+#define RNDIS_STATUS_RING_STATUS (0x40010006L)
+#define RNDIS_STATUS_CLOSED (0x40010007L)
+#define RNDIS_STATUS_WAN_LINE_UP (0x40010008L)
+#define RNDIS_STATUS_WAN_LINE_DOWN (0x40010009L)
+#define RNDIS_STATUS_WAN_FRAGMENT (0x4001000AL)
+#define RNDIS_STATUS_MEDIA_CONNECT (0x4001000BL)
+#define RNDIS_STATUS_MEDIA_DISCONNECT (0x4001000CL)
+#define RNDIS_STATUS_HARDWARE_LINE_UP (0x4001000DL)
+#define RNDIS_STATUS_HARDWARE_LINE_DOWN (0x4001000EL)
+#define RNDIS_STATUS_INTERFACE_UP (0x4001000FL)
+#define RNDIS_STATUS_INTERFACE_DOWN (0x40010010L)
+#define RNDIS_STATUS_MEDIA_BUSY (0x40010011L)
+#define RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION (0x40010012L)
+#define RNDIS_STATUS_WW_INDICATION RDIA_SPECIFIC_INDICATION
+#define RNDIS_STATUS_LINK_SPEED_CHANGE (0x40010013L)
+
+#define RNDIS_STATUS_NOT_RESETTABLE (0x80010001L)
+#define RNDIS_STATUS_SOFT_ERRORS (0x80010003L)
+#define RNDIS_STATUS_HARD_ERRORS (0x80010004L)
+#define RNDIS_STATUS_BUFFER_OVERFLOW (STATUS_BUFFER_OVERFLOW)
+
+#define RNDIS_STATUS_FAILURE (STATUS_UNSUCCESSFUL)
+#define RNDIS_STATUS_RESOURCES (STATUS_INSUFFICIENT_RESOURCES)
+#define RNDIS_STATUS_CLOSING (0xC0010002L)
+#define RNDIS_STATUS_BAD_VERSION (0xC0010004L)
+#define RNDIS_STATUS_BAD_CHARACTERISTICS (0xC0010005L)
+#define RNDIS_STATUS_ADAPTER_NOT_FOUND (0xC0010006L)
+#define RNDIS_STATUS_OPEN_FAILED (0xC0010007L)
+#define RNDIS_STATUS_DEVICE_FAILED (0xC0010008L)
+#define RNDIS_STATUS_MULTICAST_FULL (0xC0010009L)
+#define RNDIS_STATUS_MULTICAST_EXISTS (0xC001000AL)
+#define RNDIS_STATUS_MULTICAST_NOT_FOUND (0xC001000BL)
+#define RNDIS_STATUS_REQUEST_ABORTED (0xC001000CL)
+#define RNDIS_STATUS_RESET_IN_PROGRESS (0xC001000DL)
+#define RNDIS_STATUS_CLOSING_INDICATING (0xC001000EL)
+#define RNDIS_STATUS_NOT_SUPPORTED (STATUS_NOT_SUPPORTED)
+#define RNDIS_STATUS_INVALID_PACKET (0xC001000FL)
+#define RNDIS_STATUS_OPEN_LIST_FULL (0xC0010010L)
+#define RNDIS_STATUS_ADAPTER_NOT_READY (0xC0010011L)
+#define RNDIS_STATUS_ADAPTER_NOT_OPEN (0xC0010012L)
+#define RNDIS_STATUS_NOT_INDICATING (0xC0010013L)
+#define RNDIS_STATUS_INVALID_LENGTH (0xC0010014L)
+#define RNDIS_STATUS_INVALID_DATA (0xC0010015L)
+#define RNDIS_STATUS_BUFFER_TOO_SHORT (0xC0010016L)
+#define RNDIS_STATUS_INVALID_OID (0xC0010017L)
+#define RNDIS_STATUS_ADAPTER_REMOVED (0xC0010018L)
+#define RNDIS_STATUS_UNSUPPORTED_MEDIA (0xC0010019L)
+#define RNDIS_STATUS_GROUP_ADDRESS_IN_USE (0xC001001AL)
+#define RNDIS_STATUS_FILE_NOT_FOUND (0xC001001BL)
+#define RNDIS_STATUS_ERROR_READING_FILE (0xC001001CL)
+#define RNDIS_STATUS_ALREADY_MAPPED (0xC001001DL)
+#define RNDIS_STATUS_RESOURCE_CONFLICT (0xC001001EL)
+#define RNDIS_STATUS_NO_CABLE (0xC001001FL)
+
+#define RNDIS_STATUS_INVALID_SAP (0xC0010020L)
+#define RNDIS_STATUS_SAP_IN_USE (0xC0010021L)
+#define RNDIS_STATUS_INVALID_ADDRESS (0xC0010022L)
+#define RNDIS_STATUS_VC_NOT_ACTIVATED (0xC0010023L)
+#define RNDIS_STATUS_DEST_OUT_OF_ORDER (0xC0010024L)
+#define RNDIS_STATUS_VC_NOT_AVAILABLE (0xC0010025L)
+#define RNDIS_STATUS_CELLRATE_NOT_AVAILABLE (0xC0010026L)
+#define RNDIS_STATUS_INCOMPATABLE_QOS (0xC0010027L)
+#define RNDIS_STATUS_AAL_PARAMS_UNSUPPORTED (0xC0010028L)
+#define RNDIS_STATUS_NO_ROUTE_TO_DESTINATION (0xC0010029L)
+
+#define RNDIS_STATUS_TOKEN_RING_OPEN_ERROR (0xC0011000L)
+
+/* Object Identifiers used by NdisRequest Query/Set Information */
+/* General Objects */
+#define RNDIS_OID_GEN_SUPPORTED_LIST 0x00010101
+#define RNDIS_OID_GEN_HARDWARE_STATUS 0x00010102
+#define RNDIS_OID_GEN_MEDIA_SUPPORTED 0x00010103
+#define RNDIS_OID_GEN_MEDIA_IN_USE 0x00010104
+#define RNDIS_OID_GEN_MAXIMUM_LOOKAHEAD 0x00010105
+#define RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE 0x00010106
+#define RNDIS_OID_GEN_LINK_SPEED 0x00010107
+#define RNDIS_OID_GEN_TRANSMIT_BUFFER_SPACE 0x00010108
+#define RNDIS_OID_GEN_RECEIVE_BUFFER_SPACE 0x00010109
+#define RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE 0x0001010A
+#define RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE 0x0001010B
+#define RNDIS_OID_GEN_VENDOR_ID 0x0001010C
+#define RNDIS_OID_GEN_VENDOR_DESCRIPTION 0x0001010D
+#define RNDIS_OID_GEN_CURRENT_PACKET_FILTER 0x0001010E
+#define RNDIS_OID_GEN_CURRENT_LOOKAHEAD 0x0001010F
+#define RNDIS_OID_GEN_DRIVER_VERSION 0x00010110
+#define RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE 0x00010111
+#define RNDIS_OID_GEN_PROTOCOL_OPTIONS 0x00010112
+#define RNDIS_OID_GEN_MAC_OPTIONS 0x00010113
+#define RNDIS_OID_GEN_MEDIA_CONNECT_STATUS 0x00010114
+#define RNDIS_OID_GEN_MAXIMUM_SEND_PACKETS 0x00010115
+#define RNDIS_OID_GEN_VENDOR_DRIVER_VERSION 0x00010116
+#define RNDIS_OID_GEN_NETWORK_LAYER_ADDRESSES 0x00010118
+#define RNDIS_OID_GEN_TRANSPORT_HEADER_OFFSET 0x00010119
+#define RNDIS_OID_GEN_MACHINE_NAME 0x0001021A
+#define RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER 0x0001021B
+
+#define RNDIS_OID_GEN_XMIT_OK 0x00020101
+#define RNDIS_OID_GEN_RCV_OK 0x00020102
+#define RNDIS_OID_GEN_XMIT_ERROR 0x00020103
+#define RNDIS_OID_GEN_RCV_ERROR 0x00020104
+#define RNDIS_OID_GEN_RCV_NO_BUFFER 0x00020105
+
+#define RNDIS_OID_GEN_DIRECTED_BYTES_XMIT 0x00020201
+#define RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT 0x00020202
+#define RNDIS_OID_GEN_MULTICAST_BYTES_XMIT 0x00020203
+#define RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT 0x00020204
+#define RNDIS_OID_GEN_BROADCAST_BYTES_XMIT 0x00020205
+#define RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT 0x00020206
+#define RNDIS_OID_GEN_DIRECTED_BYTES_RCV 0x00020207
+#define RNDIS_OID_GEN_DIRECTED_FRAMES_RCV 0x00020208
+#define RNDIS_OID_GEN_MULTICAST_BYTES_RCV 0x00020209
+#define RNDIS_OID_GEN_MULTICAST_FRAMES_RCV 0x0002020A
+#define RNDIS_OID_GEN_BROADCAST_BYTES_RCV 0x0002020B
+#define RNDIS_OID_GEN_BROADCAST_FRAMES_RCV 0x0002020C
+
+#define RNDIS_OID_GEN_RCV_CRC_ERROR 0x0002020D
+#define RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH 0x0002020E
+
+#define RNDIS_OID_GEN_GET_TIME_CAPS 0x0002020F
+#define RNDIS_OID_GEN_GET_NETCARD_TIME 0x00020210
+
+/* These are connection-oriented general OIDs. */
+/* These replace the above OIDs for connection-oriented media. */
+#define RNDIS_OID_GEN_CO_SUPPORTED_LIST 0x00010101
+#define RNDIS_OID_GEN_CO_HARDWARE_STATUS 0x00010102
+#define RNDIS_OID_GEN_CO_MEDIA_SUPPORTED 0x00010103
+#define RNDIS_OID_GEN_CO_MEDIA_IN_USE 0x00010104
+#define RNDIS_OID_GEN_CO_LINK_SPEED 0x00010105
+#define RNDIS_OID_GEN_CO_VENDOR_ID 0x00010106
+#define RNDIS_OID_GEN_CO_VENDOR_DESCRIPTION 0x00010107
+#define RNDIS_OID_GEN_CO_DRIVER_VERSION 0x00010108
+#define RNDIS_OID_GEN_CO_PROTOCOL_OPTIONS 0x00010109
+#define RNDIS_OID_GEN_CO_MAC_OPTIONS 0x0001010A
+#define RNDIS_OID_GEN_CO_MEDIA_CONNECT_STATUS 0x0001010B
+#define RNDIS_OID_GEN_CO_VENDOR_DRIVER_VERSION 0x0001010C
+#define RNDIS_OID_GEN_CO_MINIMUM_LINK_SPEED 0x0001010D
+
+#define RNDIS_OID_GEN_CO_GET_TIME_CAPS 0x00010201
+#define RNDIS_OID_GEN_CO_GET_NETCARD_TIME 0x00010202
+
+/* These are connection-oriented statistics OIDs. */
+#define RNDIS_OID_GEN_CO_XMIT_PDUS_OK 0x00020101
+#define RNDIS_OID_GEN_CO_RCV_PDUS_OK 0x00020102
+#define RNDIS_OID_GEN_CO_XMIT_PDUS_ERROR 0x00020103
+#define RNDIS_OID_GEN_CO_RCV_PDUS_ERROR 0x00020104
+#define RNDIS_OID_GEN_CO_RCV_PDUS_NO_BUFFER 0x00020105
+
+
+#define RNDIS_OID_GEN_CO_RCV_CRC_ERROR 0x00020201
+#define RNDIS_OID_GEN_CO_TRANSMIT_QUEUE_LENGTH 0x00020202
+#define RNDIS_OID_GEN_CO_BYTES_XMIT 0x00020203
+#define RNDIS_OID_GEN_CO_BYTES_RCV 0x00020204
+#define RNDIS_OID_GEN_CO_BYTES_XMIT_OUTSTANDING 0x00020205
+#define RNDIS_OID_GEN_CO_NETCARD_LOAD 0x00020206
+
+/* These are objects for Connection-oriented media call-managers. */
+#define RNDIS_OID_CO_ADD_PVC 0xFF000001
+#define RNDIS_OID_CO_DELETE_PVC 0xFF000002
+#define RNDIS_OID_CO_GET_CALL_INFORMATION 0xFF000003
+#define RNDIS_OID_CO_ADD_ADDRESS 0xFF000004
+#define RNDIS_OID_CO_DELETE_ADDRESS 0xFF000005
+#define RNDIS_OID_CO_GET_ADDRESSES 0xFF000006
+#define RNDIS_OID_CO_ADDRESS_CHANGE 0xFF000007
+#define RNDIS_OID_CO_SIGNALING_ENABLED 0xFF000008
+#define RNDIS_OID_CO_SIGNALING_DISABLED 0xFF000009
+
+/* 802.3 Objects (Ethernet) */
+#define RNDIS_OID_802_3_PERMANENT_ADDRESS 0x01010101
+#define RNDIS_OID_802_3_CURRENT_ADDRESS 0x01010102
+#define RNDIS_OID_802_3_MULTICAST_LIST 0x01010103
+#define RNDIS_OID_802_3_MAXIMUM_LIST_SIZE 0x01010104
+#define RNDIS_OID_802_3_MAC_OPTIONS 0x01010105
+
+#define NDIS_802_3_MAC_OPTION_PRIORITY 0x00000001
+
+#define RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT 0x01020101
+#define RNDIS_OID_802_3_XMIT_ONE_COLLISION 0x01020102
+#define RNDIS_OID_802_3_XMIT_MORE_COLLISIONS 0x01020103
+
+#define RNDIS_OID_802_3_XMIT_DEFERRED 0x01020201
+#define RNDIS_OID_802_3_XMIT_MAX_COLLISIONS 0x01020202
+#define RNDIS_OID_802_3_RCV_OVERRUN 0x01020203
+#define RNDIS_OID_802_3_XMIT_UNDERRUN 0x01020204
+#define RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE 0x01020205
+#define RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST 0x01020206
+#define RNDIS_OID_802_3_XMIT_LATE_COLLISIONS 0x01020207
+
+/* Remote NDIS message types */
+#define REMOTE_NDIS_PACKET_MSG 0x00000001
+#define REMOTE_NDIS_INITIALIZE_MSG 0x00000002
+#define REMOTE_NDIS_HALT_MSG 0x00000003
+#define REMOTE_NDIS_QUERY_MSG 0x00000004
+#define REMOTE_NDIS_SET_MSG 0x00000005
+#define REMOTE_NDIS_RESET_MSG 0x00000006
+#define REMOTE_NDIS_INDICATE_STATUS_MSG 0x00000007
+#define REMOTE_NDIS_KEEPALIVE_MSG 0x00000008
+
+#define REMOTE_CONDIS_MP_CREATE_VC_MSG 0x00008001
+#define REMOTE_CONDIS_MP_DELETE_VC_MSG 0x00008002
+#define REMOTE_CONDIS_MP_ACTIVATE_VC_MSG 0x00008005
+#define REMOTE_CONDIS_MP_DEACTIVATE_VC_MSG 0x00008006
+#define REMOTE_CONDIS_INDICATE_STATUS_MSG 0x00008007
+
+/* Remote NDIS message completion types */
+#define REMOTE_NDIS_INITIALIZE_CMPLT 0x80000002
+#define REMOTE_NDIS_QUERY_CMPLT 0x80000004
+#define REMOTE_NDIS_SET_CMPLT 0x80000005
+#define REMOTE_NDIS_RESET_CMPLT 0x80000006
+#define REMOTE_NDIS_KEEPALIVE_CMPLT 0x80000008
+
+#define REMOTE_CONDIS_MP_CREATE_VC_CMPLT 0x80008001
+#define REMOTE_CONDIS_MP_DELETE_VC_CMPLT 0x80008002
+#define REMOTE_CONDIS_MP_ACTIVATE_VC_CMPLT 0x80008005
+#define REMOTE_CONDIS_MP_DEACTIVATE_VC_CMPLT 0x80008006
+
+/*
+ * Reserved message type for private communication between lower-layer host
+ * driver and remote device, if necessary.
+ */
+#define REMOTE_NDIS_BUS_MSG 0xff000001
+
+/* Defines for DeviceFlags in struct rndis_initialize_complete */
+#define RNDIS_DF_CONNECTIONLESS 0x00000001
+#define RNDIS_DF_CONNECTION_ORIENTED 0x00000002
+#define RNDIS_DF_RAW_DATA 0x00000004
+
+/* Remote NDIS medium types. */
+#define RNDIS_MEDIUM_802_3 0x00000000
+#define RNDIS_MEDIUM_802_5 0x00000001
+#define RNDIS_MEDIUM_FDDI 0x00000002
+#define RNDIS_MEDIUM_WAN 0x00000003
+#define RNDIS_MEDIUM_LOCAL_TALK 0x00000004
+#define RNDIS_MEDIUM_ARCNET_RAW 0x00000006
+#define RNDIS_MEDIUM_ARCNET_878_2 0x00000007
+#define RNDIS_MEDIUM_ATM 0x00000008
+#define RNDIS_MEDIUM_WIRELESS_WAN 0x00000009
+#define RNDIS_MEDIUM_IRDA 0x0000000a
+#define RNDIS_MEDIUM_CO_WAN 0x0000000b
+/* Not a real medium, defined as an upper-bound */
+#define RNDIS_MEDIUM_MAX 0x0000000d
+
+
+/* Remote NDIS medium connection states. */
+#define RNDIS_MEDIA_STATE_CONNECTED 0x00000000
+#define RNDIS_MEDIA_STATE_DISCONNECTED 0x00000001
+
+/* Remote NDIS version numbers */
+#define RNDIS_MAJOR_VERSION 0x00000001
+#define RNDIS_MINOR_VERSION 0x00000000
+
+
+/* NdisInitialize message */
+struct rndis_initialize_request {
+ u32 req_id;
+ u32 major_ver;
+ u32 minor_ver;
+ u32 max_xfer_size;
+};
+
+/* Response to NdisInitialize */
+struct rndis_initialize_complete {
+ u32 req_id;
+ u32 status;
+ u32 major_ver;
+ u32 minor_ver;
+ u32 dev_flags;
+ u32 medium;
+ u32 max_pkt_per_msg;
+ u32 max_xfer_size;
+ u32 pkt_alignment_factor;
+ u32 af_list_offset;
+ u32 af_list_size;
+};
+
+/* Call manager devices only: Information about an address family */
+/* supported by the device is appended to the response to NdisInitialize. */
+struct rndis_co_address_family {
+ u32 address_family;
+ u32 major_ver;
+ u32 minor_ver;
+};
+
+/* NdisHalt message */
+struct rndis_halt_request {
+ u32 req_id;
+};
+
+/* NdisQueryRequest message */
+struct rndis_query_request {
+ u32 req_id;
+ u32 oid;
+ u32 info_buflen;
+ u32 info_buf_offset;
+ u32 dev_vc_handle;
+};
+
+/* Response to NdisQueryRequest */
+struct rndis_query_complete {
+ u32 req_id;
+ u32 status;
+ u32 info_buflen;
+ u32 info_buf_offset;
+};
+
+/* NdisSetRequest message */
+struct rndis_set_request {
+ u32 req_id;
+ u32 oid;
+ u32 info_buflen;
+ u32 info_buf_offset;
+ u32 dev_vc_handle;
+};
+
+/* Response to NdisSetRequest */
+struct rndis_set_complete {
+ u32 req_id;
+ u32 status;
+};
+
+/* NdisReset message */
+struct rndis_reset_request {
+ u32 reserved;
+};
+
+/* Response to NdisReset */
+struct rndis_reset_complete {
+ u32 status;
+ u32 addressing_reset;
+};
+
+/* NdisMIndicateStatus message */
+struct rndis_indicate_status {
+ u32 status;
+ u32 status_buflen;
+ u32 status_buf_offset;
+};
+
+/* Diagnostic information passed as the status buffer in */
+/* struct rndis_indicate_status messages signifying error conditions. */
+struct rndis_diagnostic_info {
+ u32 diag_status;
+ u32 error_offset;
+};
+
+/* NdisKeepAlive message */
+struct rndis_keepalive_request {
+ u32 req_id;
+};
+
+/* Response to NdisKeepAlive */
+struct rndis_keepalive_complete {
+ u32 req_id;
+ u32 status;
+};
+
+/*
+ * Data message. All Offset fields contain byte offsets from the beginning of
+ * struct rndis_packet. All Length fields are in bytes. VcHandle is set
+ * to 0 for connectionless data, otherwise it contains the VC handle.
+ */
+struct rndis_packet {
+ u32 data_offset;
+ u32 data_len;
+ u32 oob_data_offset;
+ u32 oob_data_len;
+ u32 num_oob_data_elements;
+ u32 per_pkt_info_offset;
+ u32 per_pkt_info_len;
+ u32 vc_handle;
+ u32 reserved;
+};
+
+/* Optional Out of Band data associated with a Data message. */
+struct rndis_oobd {
+ u32 size;
+ u32 type;
+ u32 class_info_offset;
+};
+
+/* Packet extension field contents associated with a Data message. */
+struct rndis_per_packet_info {
+ u32 size;
+ u32 type;
+ u32 per_pkt_info_offset;
+};
+
+/* Format of Information buffer passed in a SetRequest for the OID */
+/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
+struct rndis_config_parameter_info {
+ u32 parameter_name_offset;
+ u32 parameter_name_length;
+ u32 parameter_type;
+ u32 parameter_value_offset;
+ u32 parameter_value_length;
+};
+
+/* Values for ParameterType in struct rndis_config_parameter_info */
+#define RNDIS_CONFIG_PARAM_TYPE_INTEGER 0
+#define RNDIS_CONFIG_PARAM_TYPE_STRING 2
+
+/* CONDIS Miniport messages for connection oriented devices */
+/* that do not implement a call manager. */
+
+/* CoNdisMiniportCreateVc message */
+struct rcondis_mp_create_vc {
+ u32 req_id;
+ u32 ndis_vc_handle;
+};
+
+/* Response to CoNdisMiniportCreateVc */
+struct rcondis_mp_create_vc_complete {
+ u32 req_id;
+ u32 dev_vc_handle;
+ u32 status;
+};
+
+/* CoNdisMiniportDeleteVc message */
+struct rcondis_mp_delete_vc {
+ u32 req_id;
+ u32 dev_vc_handle;
+};
+
+/* Response to CoNdisMiniportDeleteVc */
+struct rcondis_mp_delete_vc_complete {
+ u32 req_id;
+ u32 status;
+};
+
+/* CoNdisMiniportQueryRequest message */
+struct rcondis_mp_query_request {
+ u32 req_id;
+ u32 request_type;
+ u32 oid;
+ u32 dev_vc_handle;
+ u32 info_buflen;
+ u32 info_buf_offset;
+};
+
+/* CoNdisMiniportSetRequest message */
+struct rcondis_mp_set_request {
+ u32 req_id;
+ u32 request_type;
+ u32 oid;
+ u32 dev_vc_handle;
+ u32 info_buflen;
+ u32 info_buf_offset;
+};
+
+/* CoNdisIndicateStatus message */
+struct rcondis_indicate_status {
+ u32 ndis_vc_handle;
+ u32 status;
+ u32 status_buflen;
+ u32 status_buf_offset;
+};
+
+/* CONDIS Call/VC parameters */
+struct rcondis_specific_parameters {
+ u32 parameter_type;
+ u32 parameter_length;
+ u32 parameter_lffset;
+};
+
+struct rcondis_media_parameters {
+ u32 flags;
+ u32 reserved1;
+ u32 reserved2;
+ struct rcondis_specific_parameters media_specific;
+};
+
+struct rndis_flowspec {
+ u32 token_rate;
+ u32 token_bucket_size;
+ u32 peak_bandwidth;
+ u32 latency;
+ u32 delay_variation;
+ u32 service_type;
+ u32 max_sdu_size;
+ u32 minimum_policed_size;
+};
+
+struct rcondis_call_manager_parameters {
+ struct rndis_flowspec transmit;
+ struct rndis_flowspec receive;
+ struct rcondis_specific_parameters call_mgr_specific;
+};
+
+/* CoNdisMiniportActivateVc message */
+struct rcondis_mp_activate_vc_request {
+ u32 req_id;
+ u32 flags;
+ u32 dev_vc_handle;
+ u32 media_params_offset;
+ u32 media_params_length;
+ u32 call_mgr_params_offset;
+ u32 call_mgr_params_length;
+};
+
+/* Response to CoNdisMiniportActivateVc */
+struct rcondis_mp_activate_vc_complete {
+ u32 req_id;
+ u32 status;
+};
+
+/* CoNdisMiniportDeactivateVc message */
+struct rcondis_mp_deactivate_vc_request {
+ u32 req_id;
+ u32 flags;
+ u32 dev_vc_handle;
+};
+
+/* Response to CoNdisMiniportDeactivateVc */
+struct rcondis_mp_deactivate_vc_complete {
+ u32 req_id;
+ u32 status;
+};
+
+
+/* union with all of the RNDIS messages */
+union rndis_message_container {
+ struct rndis_packet pkt;
+ struct rndis_initialize_request init_req;
+ struct rndis_halt_request halt_req;
+ struct rndis_query_request query_req;
+ struct rndis_set_request set_req;
+ struct rndis_reset_request reset_req;
+ struct rndis_keepalive_request keep_alive_req;
+ struct rndis_indicate_status indicate_status;
+ struct rndis_initialize_complete init_complete;
+ struct rndis_query_complete query_complete;
+ struct rndis_set_complete set_complete;
+ struct rndis_reset_complete reset_complete;
+ struct rndis_keepalive_complete keep_alive_complete;
+ struct rcondis_mp_create_vc co_miniport_create_vc;
+ struct rcondis_mp_delete_vc co_miniport_delete_vc;
+ struct rcondis_indicate_status co_indicate_status;
+ struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
+ struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
+ struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
+ struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
+ struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
+ struct rcondis_mp_deactivate_vc_complete
+ co_miniport_deactivate_vc_complete;
+};
+
+/* Remote NDIS message format */
+struct rndis_message {
+ u32 ndis_msg_type;
+
+ /* Total length of this message, from the beginning */
+ /* of the sruct rndis_message, in bytes. */
+ u32 msg_len;
+
+ /* Actual message */
+ union rndis_message_container msg;
+};
+
+
+struct rndis_filter_packet {
+ void *completion_ctx;
+ void (*completion)(void *context);
+ struct rndis_message msg;
+};
+
+/* Handy macros */
+
+/* get the size of an RNDIS message. Pass in the message type, */
+/* struct rndis_set_request, struct rndis_packet for example */
+#define RNDIS_MESSAGE_SIZE(msg) \
+ (sizeof(msg) + (sizeof(struct rndis_message) - \
+ sizeof(union rndis_message_container)))
+
+/* get pointer to info buffer with message pointer */
+#define MESSAGE_TO_INFO_BUFFER(msg) \
+ (((unsigned char *)(msg)) + msg->info_buf_offset)
+
+/* get pointer to status buffer with message pointer */
+#define MESSAGE_TO_STATUS_BUFFER(msg) \
+ (((unsigned char *)(msg)) + msg->status_buf_offset)
+
+/* get pointer to OOBD buffer with message pointer */
+#define MESSAGE_TO_OOBD_BUFFER(msg) \
+ (((unsigned char *)(msg)) + msg->oob_data_offset)
+
+/* get pointer to data buffer with message pointer */
+#define MESSAGE_TO_DATA_BUFFER(msg) \
+ (((unsigned char *)(msg)) + msg->per_pkt_info_offset)
+
+/* get pointer to contained message from NDIS_MESSAGE pointer */
+#define RNDIS_MESSAGE_PTR_TO_MESSAGE_PTR(rndis_msg) \
+ ((void *) &rndis_msg->msg)
+
+/* get pointer to contained message from NDIS_MESSAGE pointer */
+#define RNDIS_MESSAGE_RAW_PTR_TO_MESSAGE_PTR(rndis_msg) \
+ ((void *) rndis_msg)
+
+
+#define __struct_bcount(x)
+
+
+
+#define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
+ sizeof(union rndis_message_container))
+
+#define NDIS_PACKET_TYPE_DIRECTED 0x00000001
+#define NDIS_PACKET_TYPE_MULTICAST 0x00000002
+#define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004
+#define NDIS_PACKET_TYPE_BROADCAST 0x00000008
+#define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
+#define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020
+#define NDIS_PACKET_TYPE_SMT 0x00000040
+#define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080
+#define NDIS_PACKET_TYPE_GROUP 0x00000100
+#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
+#define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
+#define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
+
+
+
+#endif /* _HYPERV_NET_H */
new file mode 100644
@@ -0,0 +1,1014 @@
+/*
+ * Copyright (c) 2009, Microsoft Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Authors:
+ * Haiyang Zhang <haiyangz@microsoft.com>
+ * Hank Janssen <hjanssen@microsoft.com>
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+#include "hyperv_net.h"
+
+
+/* Globals */
+static const char *driver_name = "netvsc";
+
+/* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */
+static const struct hv_guid netvsc_device_type = {
+ .data = {
+ 0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46,
+ 0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E
+ }
+};
+
+
+static struct netvsc_device *alloc_net_device(struct hv_device *device)
+{
+ struct netvsc_device *net_device;
+
+ net_device = kzalloc(sizeof(struct netvsc_device), GFP_KERNEL);
+ if (!net_device)
+ return NULL;
+
+ /* Set to 2 to allow both inbound and outbound traffic */
+ atomic_cmpxchg(&net_device->refcnt, 0, 2);
+
+ net_device->dev = device;
+ device->ext = net_device;
+
+ return net_device;
+}
+
+static void free_net_device(struct netvsc_device *device)
+{
+ WARN_ON(atomic_read(&device->refcnt) != 0);
+ device->dev->ext = NULL;
+ kfree(device);
+}
+
+
+/* Get the net device object iff exists and its refcount > 1 */
+static struct netvsc_device *get_outbound_net_device(struct hv_device *device)
+{
+ struct netvsc_device *net_device;
+
+ net_device = device->ext;
+ if (net_device && atomic_read(&net_device->refcnt) > 1)
+ atomic_inc(&net_device->refcnt);
+ else
+ net_device = NULL;
+
+ return net_device;
+}
+
+/* Get the net device object iff exists and its refcount > 0 */
+static struct netvsc_device *get_inbound_net_device(struct hv_device *device)
+{
+ struct netvsc_device *net_device;
+
+ net_device = device->ext;
+ if (net_device && atomic_read(&net_device->refcnt))
+ atomic_inc(&net_device->refcnt);
+ else
+ net_device = NULL;
+
+ return net_device;
+}
+
+static void put_net_device(struct hv_device *device)
+{
+ struct netvsc_device *net_device;
+
+ net_device = device->ext;
+
+ atomic_dec(&net_device->refcnt);
+}
+
+static struct netvsc_device *release_outbound_net_device(
+ struct hv_device *device)
+{
+ struct netvsc_device *net_device;
+
+ net_device = device->ext;
+ if (net_device == NULL)
+ return NULL;
+
+ /* Busy wait until the ref drop to 2, then set it to 1 */
+ while (atomic_cmpxchg(&net_device->refcnt, 2, 1) != 2)
+ udelay(100);
+
+ return net_device;
+}
+
+static struct netvsc_device *release_inbound_net_device(
+ struct hv_device *device)
+{
+ struct netvsc_device *net_device;
+
+ net_device = device->ext;
+ if (net_device == NULL)
+ return NULL;
+
+ /* Busy wait until the ref drop to 1, then set it to 0 */
+ while (atomic_cmpxchg(&net_device->refcnt, 1, 0) != 1)
+ udelay(100);
+
+ device->ext = NULL;
+ return net_device;
+}
+
+static int netvsc_destroy_recv_buf(struct netvsc_device *net_device)
+{
+ struct nvsp_message *revoke_packet;
+ int ret = 0;
+
+ /*
+ * If we got a section count, it means we received a
+ * SendReceiveBufferComplete msg (ie sent
+ * NvspMessage1TypeSendReceiveBuffer msg) therefore, we need
+ * to send a revoke msg here
+ */
+ if (net_device->recv_section_cnt) {
+ /* Send the revoke receive buffer */
+ revoke_packet = &net_device->revoke_packet;
+ memset(revoke_packet, 0, sizeof(struct nvsp_message));
+
+ revoke_packet->hdr.msg_type =
+ NVSP_MSG1_TYPE_REVOKE_RECV_BUF;
+ revoke_packet->msg.v1_msg.
+ revoke_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID;
+
+ ret = vmbus_sendpacket(net_device->dev->channel,
+ revoke_packet,
+ sizeof(struct nvsp_message),
+ (unsigned long)revoke_packet,
+ VM_PKT_DATA_INBAND, 0);
+ /*
+ * If we failed here, we might as well return and
+ * have a leak rather than continue and a bugchk
+ */
+ if (ret != 0) {
+ dev_err(&net_device->dev->device, "unable to send "
+ "revoke receive buffer to netvsp");
+ return -1;
+ }
+ }
+
+ /* Teardown the gpadl on the vsp end */
+ if (net_device->recv_buf_gpadl_handle) {
+ ret = vmbus_teardown_gpadl(net_device->dev->channel,
+ net_device->recv_buf_gpadl_handle);
+
+ /* If we failed here, we might as well return and have a leak
+ * rather than continue and a bugchk
+ */
+ if (ret != 0) {
+ dev_err(&net_device->dev->device,
+ "unable to teardown receive buffer's gpadl");
+ return -1;
+ }
+ net_device->recv_buf_gpadl_handle = 0;
+ }
+
+ if (net_device->recv_buf) {
+ /* Free up the receive buffer */
+ free_pages((unsigned long)net_device->recv_buf,
+ get_order(net_device->recv_buf_size));
+ net_device->recv_buf = NULL;
+ }
+
+ if (net_device->recv_section) {
+ net_device->recv_section_cnt = 0;
+ kfree(net_device->recv_section);
+ net_device->recv_section = NULL;
+ }
+
+ return ret;
+}
+
+static int netvsc_init_recv_buf(struct hv_device *device)
+{
+ int ret = 0;
+ int t;
+ struct netvsc_device *net_device;
+ struct nvsp_message *init_packet;
+
+ net_device = get_outbound_net_device(device);
+ if (!net_device) {
+ dev_err(&device->device, "unable to get net device..."
+ "device being destroyed?");
+ return -1;
+ }
+
+ net_device->recv_buf =
+ (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO,
+ get_order(net_device->recv_buf_size));
+ if (!net_device->recv_buf) {
+ dev_err(&device->device, "unable to allocate receive "
+ "buffer of size %d", net_device->recv_buf_size);
+ ret = -1;
+ goto cleanup;
+ }
+
+ /*
+ * Establish the gpadl handle for this buffer on this
+ * channel. Note: This call uses the vmbus connection rather
+ * than the channel to establish the gpadl handle.
+ */
+ ret = vmbus_establish_gpadl(device->channel, net_device->recv_buf,
+ net_device->recv_buf_size,
+ &net_device->recv_buf_gpadl_handle);
+ if (ret != 0) {
+ dev_err(&device->device,
+ "unable to establish receive buffer's gpadl");
+ goto cleanup;
+ }
+
+
+ /* Notify the NetVsp of the gpadl handle */
+ init_packet = &net_device->channel_init_pkt;
+
+ memset(init_packet, 0, sizeof(struct nvsp_message));
+
+ init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_RECV_BUF;
+ init_packet->msg.v1_msg.send_recv_buf.
+ gpadl_handle = net_device->recv_buf_gpadl_handle;
+ init_packet->msg.v1_msg.
+ send_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID;
+
+ /* Send the gpadl notification request */
+ ret = vmbus_sendpacket(device->channel, init_packet,
+ sizeof(struct nvsp_message),
+ (unsigned long)init_packet,
+ VM_PKT_DATA_INBAND,
+ VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ if (ret != 0) {
+ dev_err(&device->device,
+ "unable to send receive buffer's gpadl to netvsp");
+ goto cleanup;
+ }
+
+ t = wait_for_completion_timeout(&net_device->channel_init_wait, HZ);
+ BUG_ON(t == 0);
+
+
+ /* Check the response */
+ if (init_packet->msg.v1_msg.
+ send_recv_buf_complete.status != NVSP_STAT_SUCCESS) {
+ dev_err(&device->device, "Unable to complete receive buffer "
+ "initialzation with NetVsp - status %d",
+ init_packet->msg.v1_msg.
+ send_recv_buf_complete.status);
+ ret = -1;
+ goto cleanup;
+ }
+
+ /* Parse the response */
+
+ net_device->recv_section_cnt = init_packet->msg.
+ v1_msg.send_recv_buf_complete.num_sections;
+
+ net_device->recv_section = kmalloc(net_device->recv_section_cnt
+ * sizeof(struct nvsp_1_receive_buffer_section), GFP_KERNEL);
+ if (net_device->recv_section == NULL) {
+ ret = -1;
+ goto cleanup;
+ }
+
+ memcpy(net_device->recv_section,
+ init_packet->msg.v1_msg.
+ send_recv_buf_complete.sections,
+ net_device->recv_section_cnt *
+ sizeof(struct nvsp_1_receive_buffer_section));
+
+ /*
+ * For 1st release, there should only be 1 section that represents the
+ * entire receive buffer
+ */
+ if (net_device->recv_section_cnt != 1 ||
+ net_device->recv_section->offset != 0) {
+ ret = -1;
+ goto cleanup;
+ }
+
+ goto exit;
+
+cleanup:
+ netvsc_destroy_recv_buf(net_device);
+
+exit:
+ put_net_device(device);
+ return ret;
+}
+
+
+static int netvsc_connect_vsp(struct hv_device *device)
+{
+ int ret, t;
+ struct netvsc_device *net_device;
+ struct nvsp_message *init_packet;
+ int ndis_version;
+
+ net_device = get_outbound_net_device(device);
+ if (!net_device) {
+ dev_err(&device->device, "unable to get net device..."
+ "device being destroyed?");
+ return -1;
+ }
+
+ init_packet = &net_device->channel_init_pkt;
+
+ memset(init_packet, 0, sizeof(struct nvsp_message));
+ init_packet->hdr.msg_type = NVSP_MSG_TYPE_INIT;
+ init_packet->msg.init_msg.init.min_protocol_ver =
+ NVSP_MIN_PROTOCOL_VERSION;
+ init_packet->msg.init_msg.init.max_protocol_ver =
+ NVSP_MAX_PROTOCOL_VERSION;
+
+ /* Send the init request */
+ ret = vmbus_sendpacket(device->channel, init_packet,
+ sizeof(struct nvsp_message),
+ (unsigned long)init_packet,
+ VM_PKT_DATA_INBAND,
+ VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+
+ if (ret != 0)
+ goto cleanup;
+
+ t = wait_for_completion_timeout(&net_device->channel_init_wait, HZ);
+
+ if (t == 0) {
+ ret = -ETIMEDOUT;
+ goto cleanup;
+ }
+
+ if (init_packet->msg.init_msg.init_complete.status !=
+ NVSP_STAT_SUCCESS) {
+ ret = -1;
+ goto cleanup;
+ }
+
+ if (init_packet->msg.init_msg.init_complete.
+ negotiated_protocol_ver != NVSP_PROTOCOL_VERSION_1) {
+ ret = -1;
+ goto cleanup;
+ }
+ /* Send the ndis version */
+ memset(init_packet, 0, sizeof(struct nvsp_message));
+
+ ndis_version = 0x00050000;
+
+ init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_NDIS_VER;
+ init_packet->msg.v1_msg.
+ send_ndis_ver.ndis_major_ver =
+ (ndis_version & 0xFFFF0000) >> 16;
+ init_packet->msg.v1_msg.
+ send_ndis_ver.ndis_minor_ver =
+ ndis_version & 0xFFFF;
+
+ /* Send the init request */
+ ret = vmbus_sendpacket(device->channel, init_packet,
+ sizeof(struct nvsp_message),
+ (unsigned long)init_packet,
+ VM_PKT_DATA_INBAND, 0);
+ if (ret != 0) {
+ ret = -1;
+ goto cleanup;
+ }
+
+ /* Post the big receive buffer to NetVSP */
+ ret = netvsc_init_recv_buf(device);
+
+cleanup:
+ put_net_device(device);
+ return ret;
+}
+
+static void netvsc_disconnect_vsp(struct netvsc_device *net_device)
+{
+ netvsc_destroy_recv_buf(net_device);
+}
+
+/*
+ * netvsc_device_remove - Callback when the root bus device is removed
+ */
+int netvsc_device_remove(struct hv_device *device)
+{
+ struct netvsc_device *net_device;
+ struct hv_netvsc_packet *netvsc_packet, *pos;
+
+ /* Stop outbound traffic ie sends and receives completions */
+ net_device = release_outbound_net_device(device);
+ if (!net_device) {
+ dev_err(&device->device, "No net device present!!");
+ return -1;
+ }
+
+ /* Wait for all send completions */
+ while (atomic_read(&net_device->num_outstanding_sends)) {
+ dev_err(&device->device,
+ "waiting for %d requests to complete...",
+ atomic_read(&net_device->num_outstanding_sends));
+ udelay(100);
+ }
+
+ netvsc_disconnect_vsp(net_device);
+
+ /* Stop inbound traffic ie receives and sends completions */
+ net_device = release_inbound_net_device(device);
+
+ /* At this point, no one should be accessing netDevice except in here */
+ dev_notice(&device->device, "net device safe to remove");
+
+ /* Now, we can close the channel safely */
+ vmbus_close(device->channel);
+
+ /* Release all resources */
+ list_for_each_entry_safe(netvsc_packet, pos,
+ &net_device->recv_pkt_list, list_ent) {
+ list_del(&netvsc_packet->list_ent);
+ kfree(netvsc_packet);
+ }
+
+ free_net_device(net_device);
+ return 0;
+}
+
+static void netvsc_send_completion(struct hv_device *device,
+ struct vmpacket_descriptor *packet)
+{
+ struct netvsc_device *net_device;
+ struct nvsp_message *nvsp_packet;
+ struct hv_netvsc_packet *nvsc_packet;
+
+ net_device = get_inbound_net_device(device);
+ if (!net_device) {
+ dev_err(&device->device, "unable to get net device..."
+ "device being destroyed?");
+ return;
+ }
+
+ nvsp_packet = (struct nvsp_message *)((unsigned long)packet +
+ (packet->offset8 << 3));
+
+ if ((nvsp_packet->hdr.msg_type == NVSP_MSG_TYPE_INIT_COMPLETE) ||
+ (nvsp_packet->hdr.msg_type ==
+ NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE) ||
+ (nvsp_packet->hdr.msg_type ==
+ NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE)) {
+ /* Copy the response back */
+ memcpy(&net_device->channel_init_pkt, nvsp_packet,
+ sizeof(struct nvsp_message));
+ complete(&net_device->channel_init_wait);
+ } else if (nvsp_packet->hdr.msg_type ==
+ NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE) {
+ /* Get the send context */
+ nvsc_packet = (struct hv_netvsc_packet *)(unsigned long)
+ packet->trans_id;
+
+ /* Notify the layer above us */
+ nvsc_packet->completion.send.send_completion(
+ nvsc_packet->completion.send.send_completion_ctx);
+
+ atomic_dec(&net_device->num_outstanding_sends);
+ } else {
+ dev_err(&device->device, "Unknown send completion packet type- "
+ "%d received!!", nvsp_packet->hdr.msg_type);
+ }
+
+ put_net_device(device);
+}
+
+int netvsc_send(struct hv_device *device,
+ struct hv_netvsc_packet *packet)
+{
+ struct netvsc_device *net_device;
+ int ret = 0;
+
+ struct nvsp_message sendMessage;
+
+ net_device = get_outbound_net_device(device);
+ if (!net_device) {
+ dev_err(&device->device, "net device (%p) shutting down..."
+ "ignoring outbound packets", net_device);
+ return -2;
+ }
+
+ sendMessage.hdr.msg_type = NVSP_MSG1_TYPE_SEND_RNDIS_PKT;
+ if (packet->is_data_pkt) {
+ /* 0 is RMC_DATA; */
+ sendMessage.msg.v1_msg.send_rndis_pkt.channel_type = 0;
+ } else {
+ /* 1 is RMC_CONTROL; */
+ sendMessage.msg.v1_msg.send_rndis_pkt.channel_type = 1;
+ }
+
+ /* Not using send buffer section */
+ sendMessage.msg.v1_msg.send_rndis_pkt.send_buf_section_index =
+ 0xFFFFFFFF;
+ sendMessage.msg.v1_msg.send_rndis_pkt.send_buf_section_size = 0;
+
+ if (packet->page_buf_cnt) {
+ ret = vmbus_sendpacket_pagebuffer(device->channel,
+ packet->page_buf,
+ packet->page_buf_cnt,
+ &sendMessage,
+ sizeof(struct nvsp_message),
+ (unsigned long)packet);
+ } else {
+ ret = vmbus_sendpacket(device->channel, &sendMessage,
+ sizeof(struct nvsp_message),
+ (unsigned long)packet,
+ VM_PKT_DATA_INBAND,
+ VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+
+ }
+
+ if (ret != 0)
+ dev_err(&device->device, "Unable to send packet %p ret %d",
+ packet, ret);
+
+ atomic_inc(&net_device->num_outstanding_sends);
+ put_net_device(device);
+ return ret;
+}
+
+static void netvsc_send_recv_completion(struct hv_device *device,
+ u64 transaction_id)
+{
+ struct nvsp_message recvcompMessage;
+ int retries = 0;
+ int ret;
+
+ recvcompMessage.hdr.msg_type =
+ NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE;
+
+ /* FIXME: Pass in the status */
+ recvcompMessage.msg.v1_msg.send_rndis_pkt_complete.status =
+ NVSP_STAT_SUCCESS;
+
+retry_send_cmplt:
+ /* Send the completion */
+ ret = vmbus_sendpacket(device->channel, &recvcompMessage,
+ sizeof(struct nvsp_message), transaction_id,
+ VM_PKT_COMP, 0);
+ if (ret == 0) {
+ /* success */
+ /* no-op */
+ } else if (ret == -1) {
+ /* no more room...wait a bit and attempt to retry 3 times */
+ retries++;
+ dev_err(&device->device, "unable to send receive completion pkt"
+ " (tid %llx)...retrying %d", transaction_id, retries);
+
+ if (retries < 4) {
+ udelay(100);
+ goto retry_send_cmplt;
+ } else {
+ dev_err(&device->device, "unable to send receive "
+ "completion pkt (tid %llx)...give up retrying",
+ transaction_id);
+ }
+ } else {
+ dev_err(&device->device, "unable to send receive "
+ "completion pkt - %llx", transaction_id);
+ }
+}
+
+/* Send a receive completion packet to RNDIS device (ie NetVsp) */
+static void netvsc_receive_completion(void *context)
+{
+ struct hv_netvsc_packet *packet = context;
+ struct hv_device *device = (struct hv_device *)packet->device;
+ struct netvsc_device *net_device;
+ u64 transaction_id = 0;
+ bool fsend_receive_comp = false;
+ unsigned long flags;
+
+ /*
+ * Even though it seems logical to do a GetOutboundNetDevice() here to
+ * send out receive completion, we are using GetInboundNetDevice()
+ * since we may have disable outbound traffic already.
+ */
+ net_device = get_inbound_net_device(device);
+ if (!net_device) {
+ dev_err(&device->device, "unable to get net device..."
+ "device being destroyed?");
+ return;
+ }
+
+ /* Overloading use of the lock. */
+ spin_lock_irqsave(&net_device->recv_pkt_list_lock, flags);
+
+ packet->xfer_page_pkt->count--;
+
+ /*
+ * Last one in the line that represent 1 xfer page packet.
+ * Return the xfer page packet itself to the freelist
+ */
+ if (packet->xfer_page_pkt->count == 0) {
+ fsend_receive_comp = true;
+ transaction_id = packet->completion.recv.recv_completion_tid;
+ list_add_tail(&packet->xfer_page_pkt->list_ent,
+ &net_device->recv_pkt_list);
+
+ }
+
+ /* Put the packet back */
+ list_add_tail(&packet->list_ent, &net_device->recv_pkt_list);
+ spin_unlock_irqrestore(&net_device->recv_pkt_list_lock, flags);
+
+ /* Send a receive completion for the xfer page packet */
+ if (fsend_receive_comp)
+ netvsc_send_recv_completion(device, transaction_id);
+
+ put_net_device(device);
+}
+
+static void netvsc_receive(struct hv_device *device,
+ struct vmpacket_descriptor *packet)
+{
+ struct netvsc_device *net_device;
+ struct vmtransfer_page_packet_header *vmxferpage_packet;
+ struct nvsp_message *nvsp_packet;
+ struct hv_netvsc_packet *netvsc_packet = NULL;
+ unsigned long start;
+ unsigned long end, end_virtual;
+ /* struct netvsc_driver *netvscDriver; */
+ struct xferpage_packet *xferpage_packet = NULL;
+ int i, j;
+ int count = 0, bytes_remain = 0;
+ unsigned long flags;
+
+ LIST_HEAD(listHead);
+
+ net_device = get_inbound_net_device(device);
+ if (!net_device) {
+ dev_err(&device->device, "unable to get net device..."
+ "device being destroyed?");
+ return;
+ }
+
+ /*
+ * All inbound packets other than send completion should be xfer page
+ * packet
+ */
+ if (packet->type != VM_PKT_DATA_USING_XFER_PAGES) {
+ dev_err(&device->device, "Unknown packet type received - %d",
+ packet->type);
+ put_net_device(device);
+ return;
+ }
+
+ nvsp_packet = (struct nvsp_message *)((unsigned long)packet +
+ (packet->offset8 << 3));
+
+ /* Make sure this is a valid nvsp packet */
+ if (nvsp_packet->hdr.msg_type !=
+ NVSP_MSG1_TYPE_SEND_RNDIS_PKT) {
+ dev_err(&device->device, "Unknown nvsp packet type received-"
+ " %d", nvsp_packet->hdr.msg_type);
+ put_net_device(device);
+ return;
+ }
+
+ vmxferpage_packet = (struct vmtransfer_page_packet_header *)packet;
+
+ if (vmxferpage_packet->xfer_pageset_id != NETVSC_RECEIVE_BUFFER_ID) {
+ dev_err(&device->device, "Invalid xfer page set id - "
+ "expecting %x got %x", NETVSC_RECEIVE_BUFFER_ID,
+ vmxferpage_packet->xfer_pageset_id);
+ put_net_device(device);
+ return;
+ }
+
+ /*
+ * Grab free packets (range count + 1) to represent this xfer
+ * page packet. +1 to represent the xfer page packet itself.
+ * We grab it here so that we know exactly how many we can
+ * fulfil
+ */
+ spin_lock_irqsave(&net_device->recv_pkt_list_lock, flags);
+ while (!list_empty(&net_device->recv_pkt_list)) {
+ list_move_tail(net_device->recv_pkt_list.next, &listHead);
+ if (++count == vmxferpage_packet->range_cnt + 1)
+ break;
+ }
+ spin_unlock_irqrestore(&net_device->recv_pkt_list_lock, flags);
+
+ /*
+ * We need at least 2 netvsc pkts (1 to represent the xfer
+ * page and at least 1 for the range) i.e. we can handled
+ * some of the xfer page packet ranges...
+ */
+ if (count < 2) {
+ dev_err(&device->device, "Got only %d netvsc pkt...needed "
+ "%d pkts. Dropping this xfer page packet completely!",
+ count, vmxferpage_packet->range_cnt + 1);
+
+ /* Return it to the freelist */
+ spin_lock_irqsave(&net_device->recv_pkt_list_lock, flags);
+ for (i = count; i != 0; i--) {
+ list_move_tail(listHead.next,
+ &net_device->recv_pkt_list);
+ }
+ spin_unlock_irqrestore(&net_device->recv_pkt_list_lock,
+ flags);
+
+ netvsc_send_recv_completion(device,
+ vmxferpage_packet->d.trans_id);
+
+ put_net_device(device);
+ return;
+ }
+
+ /* Remove the 1st packet to represent the xfer page packet itself */
+ xferpage_packet = (struct xferpage_packet *)listHead.next;
+ list_del(&xferpage_packet->list_ent);
+
+ /* This is how much we can satisfy */
+ xferpage_packet->count = count - 1;
+
+ if (xferpage_packet->count != vmxferpage_packet->range_cnt) {
+ dev_err(&device->device, "Needed %d netvsc pkts to satisy "
+ "this xfer page...got %d",
+ vmxferpage_packet->range_cnt, xferpage_packet->count);
+ }
+
+ /* Each range represents 1 RNDIS pkt that contains 1 ethernet frame */
+ for (i = 0; i < (count - 1); i++) {
+ netvsc_packet = (struct hv_netvsc_packet *)listHead.next;
+ list_del(&netvsc_packet->list_ent);
+
+ /* Initialize the netvsc packet */
+ netvsc_packet->xfer_page_pkt = xferpage_packet;
+ netvsc_packet->completion.recv.recv_completion =
+ netvsc_receive_completion;
+ netvsc_packet->completion.recv.recv_completion_ctx =
+ netvsc_packet;
+ netvsc_packet->device = device;
+ /* Save this so that we can send it back */
+ netvsc_packet->completion.recv.recv_completion_tid =
+ vmxferpage_packet->d.trans_id;
+
+ netvsc_packet->total_data_buflen =
+ vmxferpage_packet->ranges[i].byte_count;
+ netvsc_packet->page_buf_cnt = 1;
+
+ netvsc_packet->page_buf[0].len =
+ vmxferpage_packet->ranges[i].byte_count;
+
+ start = virt_to_phys((void *)((unsigned long)net_device->
+ recv_buf + vmxferpage_packet->ranges[i].byte_offset));
+
+ netvsc_packet->page_buf[0].pfn = start >> PAGE_SHIFT;
+ end_virtual = (unsigned long)net_device->recv_buf
+ + vmxferpage_packet->ranges[i].byte_offset
+ + vmxferpage_packet->ranges[i].byte_count - 1;
+ end = virt_to_phys((void *)end_virtual);
+
+ /* Calculate the page relative offset */
+ netvsc_packet->page_buf[0].offset =
+ vmxferpage_packet->ranges[i].byte_offset &
+ (PAGE_SIZE - 1);
+ if ((end >> PAGE_SHIFT) != (start >> PAGE_SHIFT)) {
+ /* Handle frame across multiple pages: */
+ netvsc_packet->page_buf[0].len =
+ (netvsc_packet->page_buf[0].pfn <<
+ PAGE_SHIFT)
+ + PAGE_SIZE - start;
+ bytes_remain = netvsc_packet->total_data_buflen -
+ netvsc_packet->page_buf[0].len;
+ for (j = 1; j < NETVSC_PACKET_MAXPAGE; j++) {
+ netvsc_packet->page_buf[j].offset = 0;
+ if (bytes_remain <= PAGE_SIZE) {
+ netvsc_packet->page_buf[j].len =
+ bytes_remain;
+ bytes_remain = 0;
+ } else {
+ netvsc_packet->page_buf[j].len =
+ PAGE_SIZE;
+ bytes_remain -= PAGE_SIZE;
+ }
+ netvsc_packet->page_buf[j].pfn =
+ virt_to_phys((void *)(end_virtual -
+ bytes_remain)) >> PAGE_SHIFT;
+ netvsc_packet->page_buf_cnt++;
+ if (bytes_remain == 0)
+ break;
+ }
+ }
+
+ /* Pass it to the upper layer */
+ rndis_filter_receive(device, netvsc_packet);
+
+ netvsc_receive_completion(netvsc_packet->
+ completion.recv.recv_completion_ctx);
+ }
+
+ put_net_device(device);
+}
+
+static void netvsc_channel_cb(void *context)
+{
+ int ret;
+ struct hv_device *device = context;
+ struct netvsc_device *net_device;
+ u32 bytes_recvd;
+ u64 request_id;
+ unsigned char *packet;
+ struct vmpacket_descriptor *desc;
+ unsigned char *buffer;
+ int bufferlen = NETVSC_PACKET_SIZE;
+
+ packet = kzalloc(NETVSC_PACKET_SIZE * sizeof(unsigned char),
+ GFP_ATOMIC);
+ if (!packet)
+ return;
+ buffer = packet;
+
+ net_device = get_inbound_net_device(device);
+ if (!net_device) {
+ dev_err(&device->device, "net device (%p) shutting down..."
+ "ignoring inbound packets", net_device);
+ goto out;
+ }
+
+ do {
+ ret = vmbus_recvpacket_raw(device->channel, buffer, bufferlen,
+ &bytes_recvd, &request_id);
+ if (ret == 0) {
+ if (bytes_recvd > 0) {
+ desc = (struct vmpacket_descriptor *)buffer;
+ switch (desc->type) {
+ case VM_PKT_COMP:
+ netvsc_send_completion(device, desc);
+ break;
+
+ case VM_PKT_DATA_USING_XFER_PAGES:
+ netvsc_receive(device, desc);
+ break;
+
+ default:
+ dev_err(&device->device,
+ "unhandled packet type %d, "
+ "tid %llx len %d\n",
+ desc->type, request_id,
+ bytes_recvd);
+ break;
+ }
+
+ /* reset */
+ if (bufferlen > NETVSC_PACKET_SIZE) {
+ kfree(buffer);
+ buffer = packet;
+ bufferlen = NETVSC_PACKET_SIZE;
+ }
+ } else {
+ /* reset */
+ if (bufferlen > NETVSC_PACKET_SIZE) {
+ kfree(buffer);
+ buffer = packet;
+ bufferlen = NETVSC_PACKET_SIZE;
+ }
+
+ break;
+ }
+ } else if (ret == -2) {
+ /* Handle large packet */
+ buffer = kmalloc(bytes_recvd, GFP_ATOMIC);
+ if (buffer == NULL) {
+ /* Try again next time around */
+ dev_err(&device->device,
+ "unable to allocate buffer of size "
+ "(%d)!!", bytes_recvd);
+ break;
+ }
+
+ bufferlen = bytes_recvd;
+ }
+ } while (1);
+
+ put_net_device(device);
+out:
+ kfree(buffer);
+ return;
+}
+
+/*
+ * netvsc_device_add - Callback when the device belonging to this
+ * driver is added
+ */
+int netvsc_device_add(struct hv_device *device, void *additional_info)
+{
+ int ret = 0;
+ int i;
+ int ring_size =
+ ((struct netvsc_device_info *)additional_info)->ring_size;
+ struct netvsc_device *net_device;
+ struct hv_netvsc_packet *packet, *pos;
+
+ net_device = alloc_net_device(device);
+ if (!net_device) {
+ ret = -1;
+ goto cleanup;
+ }
+
+ /* Initialize the NetVSC channel extension */
+ net_device->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE;
+ spin_lock_init(&net_device->recv_pkt_list_lock);
+
+ INIT_LIST_HEAD(&net_device->recv_pkt_list);
+
+ for (i = 0; i < NETVSC_RECEIVE_PACKETLIST_COUNT; i++) {
+ packet = kzalloc(sizeof(struct hv_netvsc_packet) +
+ (NETVSC_RECEIVE_SG_COUNT *
+ sizeof(struct hv_page_buffer)), GFP_KERNEL);
+ if (!packet)
+ break;
+
+ list_add_tail(&packet->list_ent,
+ &net_device->recv_pkt_list);
+ }
+ init_completion(&net_device->channel_init_wait);
+
+ /* Open the channel */
+ ret = vmbus_open(device->channel, ring_size * PAGE_SIZE,
+ ring_size * PAGE_SIZE, NULL, 0,
+ netvsc_channel_cb, device);
+
+ if (ret != 0) {
+ dev_err(&device->device, "unable to open channel: %d", ret);
+ ret = -1;
+ goto cleanup;
+ }
+
+ /* Channel is opened */
+ pr_info("hv_netvsc channel opened successfully");
+
+ /* Connect with the NetVsp */
+ ret = netvsc_connect_vsp(device);
+ if (ret != 0) {
+ dev_err(&device->device,
+ "unable to connect to NetVSP - %d", ret);
+ ret = -1;
+ goto close;
+ }
+
+ return ret;
+
+close:
+ /* Now, we can close the channel safely */
+ vmbus_close(device->channel);
+
+cleanup:
+
+ if (net_device) {
+ list_for_each_entry_safe(packet, pos,
+ &net_device->recv_pkt_list,
+ list_ent) {
+ list_del(&packet->list_ent);
+ kfree(packet);
+ }
+
+ release_outbound_net_device(device);
+ release_inbound_net_device(device);
+
+ free_net_device(net_device);
+ }
+
+ return ret;
+}
+
+/*
+ * netvsc_initialize - Main entry point
+ */
+int netvsc_initialize(struct hv_driver *drv)
+{
+
+ drv->name = driver_name;
+ memcpy(&drv->dev_type, &netvsc_device_type, sizeof(struct hv_guid));
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,473 @@
+/*
+ * Copyright (c) 2009, Microsoft Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Authors:
+ * Haiyang Zhang <haiyangz@microsoft.com>
+ * Hank Janssen <hjanssen@microsoft.com>
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/highmem.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/dmi.h>
+#include <linux/pci.h>
+#include <net/arp.h>
+#include <net/route.h>
+#include <net/sock.h>
+#include <net/pkt_sched.h>
+
+#include "hyperv_net.h"
+
+struct net_device_context {
+ /* point back to our device context */
+ struct hv_device *device_ctx;
+ unsigned long avail;
+ struct delayed_work dwork;
+};
+
+
+#define PACKET_PAGES_LOWATER 8
+/* Need this many pages to handle worst case fragmented packet */
+#define PACKET_PAGES_HIWATER (MAX_SKB_FRAGS + 2)
+
+static int ring_size = 128;
+module_param(ring_size, int, S_IRUGO);
+MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)");
+
+/* no-op so the netdev core doesn't return -EINVAL when modifying the the
+ * multicast address list in SIOCADDMULTI. hv is setup to get all multicast
+ * when it calls RndisFilterOnOpen() */
+static void netvsc_set_multicast_list(struct net_device *net)
+{
+}
+
+static int netvsc_open(struct net_device *net)
+{
+ struct net_device_context *net_device_ctx = netdev_priv(net);
+ struct hv_device *device_obj = net_device_ctx->device_ctx;
+ int ret = 0;
+
+ if (netif_carrier_ok(net)) {
+ /* Open up the device */
+ ret = rndis_filter_open(device_obj);
+ if (ret != 0) {
+ netdev_err(net, "unable to open device (ret %d).\n",
+ ret);
+ return ret;
+ }
+
+ netif_start_queue(net);
+ } else {
+ netdev_err(net, "unable to open device...link is down.\n");
+ }
+
+ return ret;
+}
+
+static int netvsc_close(struct net_device *net)
+{
+ struct net_device_context *net_device_ctx = netdev_priv(net);
+ struct hv_device *device_obj = net_device_ctx->device_ctx;
+ int ret;
+
+ netif_stop_queue(net);
+
+ ret = rndis_filter_close(device_obj);
+ if (ret != 0)
+ netdev_err(net, "unable to close device (ret %d).\n", ret);
+
+ return ret;
+}
+
+static void netvsc_xmit_completion(void *context)
+{
+ struct hv_netvsc_packet *packet = (struct hv_netvsc_packet *)context;
+ struct sk_buff *skb = (struct sk_buff *)
+ (unsigned long)packet->completion.send.send_completion_tid;
+
+ kfree(packet);
+
+ if (skb) {
+ struct net_device *net = skb->dev;
+ struct net_device_context *net_device_ctx = netdev_priv(net);
+ unsigned int num_pages = skb_shinfo(skb)->nr_frags + 2;
+
+ dev_kfree_skb_any(skb);
+
+ net_device_ctx->avail += num_pages;
+ if (net_device_ctx->avail >= PACKET_PAGES_HIWATER)
+ netif_wake_queue(net);
+ }
+}
+
+static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
+{
+ struct net_device_context *net_device_ctx = netdev_priv(net);
+ struct hv_netvsc_packet *packet;
+ int ret;
+ unsigned int i, num_pages;
+
+ /* Add 1 for skb->data and additional one for RNDIS */
+ num_pages = skb_shinfo(skb)->nr_frags + 1 + 1;
+ if (num_pages > net_device_ctx->avail)
+ return NETDEV_TX_BUSY;
+
+ /* Allocate a netvsc packet based on # of frags. */
+ packet = kzalloc(sizeof(struct hv_netvsc_packet) +
+ (num_pages * sizeof(struct hv_page_buffer)) +
+ sizeof(struct rndis_filter_packet), GFP_ATOMIC);
+ if (!packet) {
+ /* out of memory, silently drop packet */
+ netdev_err(net, "unable to allocate hv_netvsc_packet\n");
+
+ dev_kfree_skb(skb);
+ net->stats.tx_dropped++;
+ return NETDEV_TX_OK;
+ }
+
+ packet->extension = (void *)(unsigned long)packet +
+ sizeof(struct hv_netvsc_packet) +
+ (num_pages * sizeof(struct hv_page_buffer));
+
+ /* Setup the rndis header */
+ packet->page_buf_cnt = num_pages;
+
+ /* Initialize it from the skb */
+ packet->total_data_buflen = skb->len;
+
+ /* Start filling in the page buffers starting after RNDIS buffer. */
+ packet->page_buf[1].pfn = virt_to_phys(skb->data) >> PAGE_SHIFT;
+ packet->page_buf[1].offset
+ = (unsigned long)skb->data & (PAGE_SIZE - 1);
+ packet->page_buf[1].len = skb_headlen(skb);
+
+ /* Additional fragments are after SKB data */
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ skb_frag_t *f = &skb_shinfo(skb)->frags[i];
+
+ packet->page_buf[i+2].pfn = page_to_pfn(f->page);
+ packet->page_buf[i+2].offset = f->page_offset;
+ packet->page_buf[i+2].len = f->size;
+ }
+
+ /* Set the completion routine */
+ packet->completion.send.send_completion = netvsc_xmit_completion;
+ packet->completion.send.send_completion_ctx = packet;
+ packet->completion.send.send_completion_tid = (unsigned long)skb;
+
+ ret = rndis_filter_send(net_device_ctx->device_ctx,
+ packet);
+ if (ret == 0) {
+ net->stats.tx_bytes += skb->len;
+ net->stats.tx_packets++;
+
+ net_device_ctx->avail -= num_pages;
+ if (net_device_ctx->avail < PACKET_PAGES_LOWATER)
+ netif_stop_queue(net);
+ } else {
+ /* we are shutting down or bus overloaded, just drop packet */
+ net->stats.tx_dropped++;
+ netvsc_xmit_completion(packet);
+ }
+
+ return NETDEV_TX_OK;
+}
+
+/*
+ * netvsc_linkstatus_callback - Link up/down notification
+ */
+void netvsc_linkstatus_callback(struct hv_device *device_obj,
+ unsigned int status)
+{
+ struct net_device *net = dev_get_drvdata(&device_obj->device);
+ struct net_device_context *ndev_ctx;
+
+ if (!net) {
+ netdev_err(net, "got link status but net device "
+ "not initialized yet\n");
+ return;
+ }
+
+ if (status == 1) {
+ netif_carrier_on(net);
+ netif_wake_queue(net);
+ netif_notify_peers(net);
+ ndev_ctx = netdev_priv(net);
+ schedule_delayed_work(&ndev_ctx->dwork, msecs_to_jiffies(20));
+ } else {
+ netif_carrier_off(net);
+ netif_stop_queue(net);
+ }
+}
+
+/*
+ * netvsc_recv_callback - Callback when we receive a packet from the
+ * "wire" on the specified device.
+ */
+int netvsc_recv_callback(struct hv_device *device_obj,
+ struct hv_netvsc_packet *packet)
+{
+ struct net_device *net = dev_get_drvdata(&device_obj->device);
+ struct sk_buff *skb;
+ void *data;
+ int i;
+ unsigned long flags;
+
+ if (!net) {
+ netdev_err(net, "got receive callback but net device"
+ " not initialized yet\n");
+ return 0;
+ }
+
+ /* Allocate a skb - TODO direct I/O to pages? */
+ skb = netdev_alloc_skb_ip_align(net, packet->total_data_buflen);
+ if (unlikely(!skb)) {
+ ++net->stats.rx_dropped;
+ return 0;
+ }
+
+ /* for kmap_atomic */
+ local_irq_save(flags);
+
+ /*
+ * Copy to skb. This copy is needed here since the memory pointed by
+ * hv_netvsc_packet cannot be deallocated
+ */
+ for (i = 0; i < packet->page_buf_cnt; i++) {
+ data = kmap_atomic(pfn_to_page(packet->page_buf[i].pfn),
+ KM_IRQ1);
+ data = (void *)(unsigned long)data +
+ packet->page_buf[i].offset;
+
+ memcpy(skb_put(skb, packet->page_buf[i].len), data,
+ packet->page_buf[i].len);
+
+ kunmap_atomic((void *)((unsigned long)data -
+ packet->page_buf[i].offset), KM_IRQ1);
+ }
+
+ local_irq_restore(flags);
+
+ skb->protocol = eth_type_trans(skb, net);
+ skb->ip_summed = CHECKSUM_NONE;
+
+ net->stats.rx_packets++;
+ net->stats.rx_bytes += skb->len;
+
+ /*
+ * Pass the skb back up. Network stack will deallocate the skb when it
+ * is done.
+ * TODO - use NAPI?
+ */
+ netif_rx(skb);
+
+ return 0;
+}
+
+static void netvsc_get_drvinfo(struct net_device *net,
+ struct ethtool_drvinfo *info)
+{
+ strcpy(info->driver, "hv_netvsc");
+ strcpy(info->version, HV_DRV_VERSION);
+ strcpy(info->fw_version, "N/A");
+}
+
+static const struct ethtool_ops ethtool_ops = {
+ .get_drvinfo = netvsc_get_drvinfo,
+ .get_link = ethtool_op_get_link,
+};
+
+static const struct net_device_ops device_ops = {
+ .ndo_open = netvsc_open,
+ .ndo_stop = netvsc_close,
+ .ndo_start_xmit = netvsc_start_xmit,
+ .ndo_set_multicast_list = netvsc_set_multicast_list,
+ .ndo_change_mtu = eth_change_mtu,
+ .ndo_validate_addr = eth_validate_addr,
+ .ndo_set_mac_address = eth_mac_addr,
+};
+
+/*
+ * Send GARP packet to network peers after migrations.
+ * After Quick Migration, the network is not immediately operational in the
+ * current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, add
+ * another netif_notify_peers() into a delayed work, otherwise GARP packet
+ * will not be sent after quick migration, and cause network disconnection.
+ */
+static void netvsc_send_garp(struct work_struct *w)
+{
+ struct net_device_context *ndev_ctx;
+ struct net_device *net;
+
+ ndev_ctx = container_of(w, struct net_device_context, dwork.work);
+ net = dev_get_drvdata(&ndev_ctx->device_ctx->device);
+ netif_notify_peers(net);
+}
+
+
+static int netvsc_probe(struct hv_device *dev)
+{
+ struct net_device *net = NULL;
+ struct net_device_context *net_device_ctx;
+ struct netvsc_device_info device_info;
+ int ret;
+
+ net = alloc_etherdev(sizeof(struct net_device_context));
+ if (!net)
+ return -1;
+
+ /* Set initial state */
+ netif_carrier_off(net);
+
+ net_device_ctx = netdev_priv(net);
+ net_device_ctx->device_ctx = dev;
+ net_device_ctx->avail = ring_size;
+ dev_set_drvdata(&dev->device, net);
+ INIT_DELAYED_WORK(&net_device_ctx->dwork, netvsc_send_garp);
+
+ /* Notify the netvsc driver of the new device */
+ device_info.ring_size = ring_size;
+ ret = rndis_filter_device_add(dev, &device_info);
+ if (ret != 0) {
+ free_netdev(net);
+ dev_set_drvdata(&dev->device, NULL);
+
+ netdev_err(net, "unable to add netvsc device (ret %d)\n", ret);
+ return ret;
+ }
+
+ netif_carrier_on(net);
+
+ memcpy(net->dev_addr, device_info.mac_adr, ETH_ALEN);
+
+ net->netdev_ops = &device_ops;
+
+ /* TODO: Add GSO and Checksum offload */
+ net->hw_features = NETIF_F_SG;
+ net->features = NETIF_F_SG;
+
+ SET_ETHTOOL_OPS(net, ðtool_ops);
+ SET_NETDEV_DEV(net, &dev->device);
+
+ ret = register_netdev(net);
+ if (ret != 0) {
+ /* Remove the device and release the resource */
+ rndis_filter_device_remove(dev);
+ free_netdev(net);
+ }
+
+ return ret;
+}
+
+static int netvsc_remove(struct hv_device *dev)
+{
+ struct net_device *net = dev_get_drvdata(&dev->device);
+ struct net_device_context *ndev_ctx;
+
+ if (net == NULL) {
+ dev_err(&dev->device, "No net device to remove\n");
+ return 0;
+ }
+
+ ndev_ctx = netdev_priv(net);
+ cancel_delayed_work_sync(&ndev_ctx->dwork);
+
+ /* Stop outbound asap */
+ netif_stop_queue(net);
+
+ unregister_netdev(net);
+
+ /*
+ * Call to the vsc driver to let it know that the device is being
+ * removed
+ */
+ rndis_filter_device_remove(dev);
+
+ free_netdev(net);
+ return 0;
+}
+
+/* The one and only one */
+static struct hv_driver netvsc_drv = {
+ .probe = netvsc_probe,
+ .remove = netvsc_remove,
+};
+
+static void __exit netvsc_drv_exit(void)
+{
+ vmbus_child_driver_unregister(&netvsc_drv.driver);
+}
+
+
+static const struct dmi_system_id __initconst
+hv_netvsc_dmi_table[] __maybe_unused = {
+ {
+ .ident = "Hyper-V",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
+ DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"),
+ },
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(dmi, hv_netvsc_dmi_table);
+
+static int __init netvsc_drv_init(void)
+{
+ struct hv_driver *drv = &netvsc_drv;
+ int ret;
+
+ pr_info("initializing....");
+
+ if (!dmi_check_system(hv_netvsc_dmi_table))
+ return -ENODEV;
+
+
+ /* Callback to client driver to complete the initialization */
+ netvsc_initialize(drv);
+
+ drv->driver.name = drv->name;
+
+ /* The driver belongs to vmbus */
+ ret = vmbus_child_driver_register(&drv->driver);
+
+ return ret;
+}
+
+static const struct pci_device_id __initconst
+hv_netvsc_pci_table[] __maybe_unused = {
+ { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */
+ { 0 }
+};
+MODULE_DEVICE_TABLE(pci, hv_netvsc_pci_table);
+
+MODULE_LICENSE("GPL");
+MODULE_VERSION(HV_DRV_VERSION);
+MODULE_DESCRIPTION("Microsoft Hyper-V network driver");
+
+module_init(netvsc_drv_init);
+module_exit(netvsc_drv_exit);
new file mode 100644
@@ -0,0 +1,830 @@
+/*
+ * Copyright (c) 2009, Microsoft Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Authors:
+ * Haiyang Zhang <haiyangz@microsoft.com>
+ * Hank Janssen <hjanssen@microsoft.com>
+ */
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/highmem.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+
+#include "hyperv_net.h"
+
+
+enum rndis_device_state {
+ RNDIS_DEV_UNINITIALIZED = 0,
+ RNDIS_DEV_INITIALIZING,
+ RNDIS_DEV_INITIALIZED,
+ RNDIS_DEV_DATAINITIALIZED,
+};
+
+struct rndis_device {
+ struct netvsc_device *net_dev;
+
+ enum rndis_device_state state;
+ u32 link_stat;
+ atomic_t new_req_id;
+
+ spinlock_t request_lock;
+ struct list_head req_list;
+
+ unsigned char hw_mac_adr[ETH_ALEN];
+};
+
+struct rndis_request {
+ struct list_head list_ent;
+ struct completion wait_event;
+
+ /*
+ * FIXME: We assumed a fixed size response here. If we do ever need to
+ * handle a bigger response, we can either define a max response
+ * message or add a response buffer variable above this field
+ */
+ struct rndis_message response_msg;
+
+ /* Simplify allocation by having a netvsc packet inline */
+ struct hv_netvsc_packet pkt;
+ struct hv_page_buffer buf;
+ /* FIXME: We assumed a fixed size request here. */
+ struct rndis_message request_msg;
+};
+
+static void rndis_filter_send_completion(void *ctx);
+
+static void rndis_filter_send_request_completion(void *ctx);
+
+
+
+static struct rndis_device *get_rndis_device(void)
+{
+ struct rndis_device *device;
+
+ device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL);
+ if (!device)
+ return NULL;
+
+ spin_lock_init(&device->request_lock);
+
+ INIT_LIST_HEAD(&device->req_list);
+
+ device->state = RNDIS_DEV_UNINITIALIZED;
+
+ return device;
+}
+
+static struct rndis_request *get_rndis_request(struct rndis_device *dev,
+ u32 msg_type,
+ u32 msg_len)
+{
+ struct rndis_request *request;
+ struct rndis_message *rndis_msg;
+ struct rndis_set_request *set;
+ unsigned long flags;
+
+ request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL);
+ if (!request)
+ return NULL;
+
+ init_completion(&request->wait_event);
+
+ rndis_msg = &request->request_msg;
+ rndis_msg->ndis_msg_type = msg_type;
+ rndis_msg->msg_len = msg_len;
+
+ /*
+ * Set the request id. This field is always after the rndis header for
+ * request/response packet types so we just used the SetRequest as a
+ * template
+ */
+ set = &rndis_msg->msg.set_req;
+ set->req_id = atomic_inc_return(&dev->new_req_id);
+
+ /* Add to the request list */
+ spin_lock_irqsave(&dev->request_lock, flags);
+ list_add_tail(&request->list_ent, &dev->req_list);
+ spin_unlock_irqrestore(&dev->request_lock, flags);
+
+ return request;
+}
+
+static void put_rndis_request(struct rndis_device *dev,
+ struct rndis_request *req)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->request_lock, flags);
+ list_del(&req->list_ent);
+ spin_unlock_irqrestore(&dev->request_lock, flags);
+
+ kfree(req);
+}
+
+static void dump_rndis_message(struct hv_device *hv_dev,
+ struct rndis_message *rndis_msg)
+{
+ struct net_device *netdev = dev_get_drvdata(&hv_dev->device);
+
+ switch (rndis_msg->ndis_msg_type) {
+ case REMOTE_NDIS_PACKET_MSG:
+ netdev_dbg(netdev, "REMOTE_NDIS_PACKET_MSG (len %u, "
+ "data offset %u data len %u, # oob %u, "
+ "oob offset %u, oob len %u, pkt offset %u, "
+ "pkt len %u\n",
+ rndis_msg->msg_len,
+ rndis_msg->msg.pkt.data_offset,
+ rndis_msg->msg.pkt.data_len,
+ rndis_msg->msg.pkt.num_oob_data_elements,
+ rndis_msg->msg.pkt.oob_data_offset,
+ rndis_msg->msg.pkt.oob_data_len,
+ rndis_msg->msg.pkt.per_pkt_info_offset,
+ rndis_msg->msg.pkt.per_pkt_info_len);
+ break;
+
+ case REMOTE_NDIS_INITIALIZE_CMPLT:
+ netdev_dbg(netdev, "REMOTE_NDIS_INITIALIZE_CMPLT "
+ "(len %u, id 0x%x, status 0x%x, major %d, minor %d, "
+ "device flags %d, max xfer size 0x%x, max pkts %u, "
+ "pkt aligned %u)\n",
+ rndis_msg->msg_len,
+ rndis_msg->msg.init_complete.req_id,
+ rndis_msg->msg.init_complete.status,
+ rndis_msg->msg.init_complete.major_ver,
+ rndis_msg->msg.init_complete.minor_ver,
+ rndis_msg->msg.init_complete.dev_flags,
+ rndis_msg->msg.init_complete.max_xfer_size,
+ rndis_msg->msg.init_complete.
+ max_pkt_per_msg,
+ rndis_msg->msg.init_complete.
+ pkt_alignment_factor);
+ break;
+
+ case REMOTE_NDIS_QUERY_CMPLT:
+ netdev_dbg(netdev, "REMOTE_NDIS_QUERY_CMPLT "
+ "(len %u, id 0x%x, status 0x%x, buf len %u, "
+ "buf offset %u)\n",
+ rndis_msg->msg_len,
+ rndis_msg->msg.query_complete.req_id,
+ rndis_msg->msg.query_complete.status,
+ rndis_msg->msg.query_complete.
+ info_buflen,
+ rndis_msg->msg.query_complete.
+ info_buf_offset);
+ break;
+
+ case REMOTE_NDIS_SET_CMPLT:
+ netdev_dbg(netdev,
+ "REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)\n",
+ rndis_msg->msg_len,
+ rndis_msg->msg.set_complete.req_id,
+ rndis_msg->msg.set_complete.status);
+ break;
+
+ case REMOTE_NDIS_INDICATE_STATUS_MSG:
+ netdev_dbg(netdev, "REMOTE_NDIS_INDICATE_STATUS_MSG "
+ "(len %u, status 0x%x, buf len %u, buf offset %u)\n",
+ rndis_msg->msg_len,
+ rndis_msg->msg.indicate_status.status,
+ rndis_msg->msg.indicate_status.status_buflen,
+ rndis_msg->msg.indicate_status.status_buf_offset);
+ break;
+
+ default:
+ netdev_dbg(netdev, "0x%x (len %u)\n",
+ rndis_msg->ndis_msg_type,
+ rndis_msg->msg_len);
+ break;
+ }
+}
+
+static int rndis_filter_send_request(struct rndis_device *dev,
+ struct rndis_request *req)
+{
+ int ret;
+ struct hv_netvsc_packet *packet;
+
+ /* Setup the packet to send it */
+ packet = &req->pkt;
+
+ packet->is_data_pkt = false;
+ packet->total_data_buflen = req->request_msg.msg_len;
+ packet->page_buf_cnt = 1;
+
+ packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >>
+ PAGE_SHIFT;
+ packet->page_buf[0].len = req->request_msg.msg_len;
+ packet->page_buf[0].offset =
+ (unsigned long)&req->request_msg & (PAGE_SIZE - 1);
+
+ packet->completion.send.send_completion_ctx = req;/* packet; */
+ packet->completion.send.send_completion =
+ rndis_filter_send_request_completion;
+ packet->completion.send.send_completion_tid = (unsigned long)dev;
+
+ ret = netvsc_send(dev->net_dev->dev, packet);
+ return ret;
+}
+
+static void rndis_filter_receive_response(struct rndis_device *dev,
+ struct rndis_message *resp)
+{
+ struct rndis_request *request = NULL;
+ bool found = false;
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->request_lock, flags);
+ list_for_each_entry(request, &dev->req_list, list_ent) {
+ /*
+ * All request/response message contains RequestId as the 1st
+ * field
+ */
+ if (request->request_msg.msg.init_req.req_id
+ == resp->msg.init_complete.req_id) {
+ found = true;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&dev->request_lock, flags);
+
+ if (found) {
+ if (resp->msg_len <= sizeof(struct rndis_message)) {
+ memcpy(&request->response_msg, resp,
+ resp->msg_len);
+ } else {
+ dev_err(&dev->net_dev->dev->device,
+ "rndis response buffer overflow "
+ "detected (size %u max %zu)\n",
+ resp->msg_len,
+ sizeof(struct rndis_filter_packet));
+
+ if (resp->ndis_msg_type ==
+ REMOTE_NDIS_RESET_CMPLT) {
+ /* does not have a request id field */
+ request->response_msg.msg.reset_complete.
+ status = STATUS_BUFFER_OVERFLOW;
+ } else {
+ request->response_msg.msg.
+ init_complete.status =
+ STATUS_BUFFER_OVERFLOW;
+ }
+ }
+
+ complete(&request->wait_event);
+ } else {
+ dev_err(&dev->net_dev->dev->device,
+ "no rndis request found for this response "
+ "(id 0x%x res type 0x%x)\n",
+ resp->msg.init_complete.req_id,
+ resp->ndis_msg_type);
+ }
+}
+
+static void rndis_filter_receive_indicate_status(struct rndis_device *dev,
+ struct rndis_message *resp)
+{
+ struct rndis_indicate_status *indicate =
+ &resp->msg.indicate_status;
+
+ if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) {
+ netvsc_linkstatus_callback(
+ dev->net_dev->dev, 1);
+ } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) {
+ netvsc_linkstatus_callback(
+ dev->net_dev->dev, 0);
+ } else {
+ /*
+ * TODO:
+ */
+ }
+}
+
+static void rndis_filter_receive_data(struct rndis_device *dev,
+ struct rndis_message *msg,
+ struct hv_netvsc_packet *pkt)
+{
+ struct rndis_packet *rndis_pkt;
+ u32 data_offset;
+
+ rndis_pkt = &msg->msg.pkt;
+
+ /*
+ * FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this
+ * netvsc packet (ie TotalDataBufferLength != MessageLength)
+ */
+
+ /* Remove the rndis header and pass it back up the stack */
+ data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset;
+
+ pkt->total_data_buflen -= data_offset;
+ pkt->page_buf[0].offset += data_offset;
+ pkt->page_buf[0].len -= data_offset;
+
+ pkt->is_data_pkt = true;
+
+ netvsc_recv_callback(dev->net_dev->dev, pkt);
+}
+
+int rndis_filter_receive(struct hv_device *dev,
+ struct hv_netvsc_packet *pkt)
+{
+ struct netvsc_device *net_dev = dev->ext;
+ struct rndis_device *rndis_dev;
+ struct rndis_message rndis_msg;
+ struct rndis_message *rndis_hdr;
+
+ if (!net_dev)
+ return -EINVAL;
+
+ /* Make sure the rndis device state is initialized */
+ if (!net_dev->extension) {
+ dev_err(&dev->device, "got rndis message but no rndis device - "
+ "dropping this message!\n");
+ return -1;
+ }
+
+ rndis_dev = (struct rndis_device *)net_dev->extension;
+ if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) {
+ dev_err(&dev->device, "got rndis message but rndis device "
+ "uninitialized...dropping this message!\n");
+ return -1;
+ }
+
+ rndis_hdr = (struct rndis_message *)kmap_atomic(
+ pfn_to_page(pkt->page_buf[0].pfn), KM_IRQ0);
+
+ rndis_hdr = (void *)((unsigned long)rndis_hdr +
+ pkt->page_buf[0].offset);
+
+ /* Make sure we got a valid rndis message */
+ if ((rndis_hdr->ndis_msg_type != REMOTE_NDIS_PACKET_MSG) &&
+ (rndis_hdr->msg_len > sizeof(struct rndis_message))) {
+ dev_err(&dev->device, "incoming rndis message buffer overflow "
+ "detected (got %u, max %zu)..marking it an error!\n",
+ rndis_hdr->msg_len,
+ sizeof(struct rndis_message));
+ }
+
+ memcpy(&rndis_msg, rndis_hdr,
+ (rndis_hdr->msg_len > sizeof(struct rndis_message)) ?
+ sizeof(struct rndis_message) :
+ rndis_hdr->msg_len);
+
+ kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, KM_IRQ0);
+
+ dump_rndis_message(dev, &rndis_msg);
+
+ switch (rndis_msg.ndis_msg_type) {
+ case REMOTE_NDIS_PACKET_MSG:
+ /* data msg */
+ rndis_filter_receive_data(rndis_dev, &rndis_msg, pkt);
+ break;
+
+ case REMOTE_NDIS_INITIALIZE_CMPLT:
+ case REMOTE_NDIS_QUERY_CMPLT:
+ case REMOTE_NDIS_SET_CMPLT:
+ /* completion msgs */
+ rndis_filter_receive_response(rndis_dev, &rndis_msg);
+ break;
+
+ case REMOTE_NDIS_INDICATE_STATUS_MSG:
+ /* notification msgs */
+ rndis_filter_receive_indicate_status(rndis_dev, &rndis_msg);
+ break;
+ default:
+ dev_err(&dev->device,
+ "unhandled rndis message (type %u len %u)\n",
+ rndis_msg.ndis_msg_type,
+ rndis_msg.msg_len);
+ break;
+ }
+
+ return 0;
+}
+
+static int rndis_filter_query_device(struct rndis_device *dev, u32 oid,
+ void *result, u32 *result_size)
+{
+ struct rndis_request *request;
+ u32 inresult_size = *result_size;
+ struct rndis_query_request *query;
+ struct rndis_query_complete *query_complete;
+ int ret = 0;
+ int t;
+
+ if (!result)
+ return -EINVAL;
+
+ *result_size = 0;
+ request = get_rndis_request(dev, REMOTE_NDIS_QUERY_MSG,
+ RNDIS_MESSAGE_SIZE(struct rndis_query_request));
+ if (!request) {
+ ret = -1;
+ goto Cleanup;
+ }
+
+ /* Setup the rndis query */
+ query = &request->request_msg.msg.query_req;
+ query->oid = oid;
+ query->info_buf_offset = sizeof(struct rndis_query_request);
+ query->info_buflen = 0;
+ query->dev_vc_handle = 0;
+
+ ret = rndis_filter_send_request(dev, request);
+ if (ret != 0)
+ goto Cleanup;
+
+ t = wait_for_completion_timeout(&request->wait_event, HZ);
+ if (t == 0) {
+ ret = -ETIMEDOUT;
+ goto Cleanup;
+ }
+
+ /* Copy the response back */
+ query_complete = &request->response_msg.msg.query_complete;
+
+ if (query_complete->info_buflen > inresult_size) {
+ ret = -1;
+ goto Cleanup;
+ }
+
+ memcpy(result,
+ (void *)((unsigned long)query_complete +
+ query_complete->info_buf_offset),
+ query_complete->info_buflen);
+
+ *result_size = query_complete->info_buflen;
+
+Cleanup:
+ if (request)
+ put_rndis_request(dev, request);
+
+ return ret;
+}
+
+static int rndis_filter_query_device_mac(struct rndis_device *dev)
+{
+ u32 size = ETH_ALEN;
+
+ return rndis_filter_query_device(dev,
+ RNDIS_OID_802_3_PERMANENT_ADDRESS,
+ dev->hw_mac_adr, &size);
+}
+
+static int rndis_filter_query_device_link_status(struct rndis_device *dev)
+{
+ u32 size = sizeof(u32);
+
+ return rndis_filter_query_device(dev,
+ RNDIS_OID_GEN_MEDIA_CONNECT_STATUS,
+ &dev->link_stat, &size);
+}
+
+static int rndis_filter_set_packet_filter(struct rndis_device *dev,
+ u32 new_filter)
+{
+ struct rndis_request *request;
+ struct rndis_set_request *set;
+ struct rndis_set_complete *set_complete;
+ u32 status;
+ int ret, t;
+
+ request = get_rndis_request(dev, REMOTE_NDIS_SET_MSG,
+ RNDIS_MESSAGE_SIZE(struct rndis_set_request) +
+ sizeof(u32));
+ if (!request) {
+ ret = -1;
+ goto Cleanup;
+ }
+
+ /* Setup the rndis set */
+ set = &request->request_msg.msg.set_req;
+ set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER;
+ set->info_buflen = sizeof(u32);
+ set->info_buf_offset = sizeof(struct rndis_set_request);
+
+ memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request),
+ &new_filter, sizeof(u32));
+
+ ret = rndis_filter_send_request(dev, request);
+ if (ret != 0)
+ goto Cleanup;
+
+ t = wait_for_completion_timeout(&request->wait_event, HZ);
+
+ if (t == 0) {
+ ret = -1;
+ dev_err(&dev->net_dev->dev->device,
+ "timeout before we got a set response...\n");
+ /*
+ * We can't deallocate the request since we may still receive a
+ * send completion for it.
+ */
+ goto Exit;
+ } else {
+ if (ret > 0)
+ ret = 0;
+ set_complete = &request->response_msg.msg.set_complete;
+ status = set_complete->status;
+ }
+
+Cleanup:
+ if (request)
+ put_rndis_request(dev, request);
+Exit:
+ return ret;
+}
+
+
+static int rndis_filter_init_device(struct rndis_device *dev)
+{
+ struct rndis_request *request;
+ struct rndis_initialize_request *init;
+ struct rndis_initialize_complete *init_complete;
+ u32 status;
+ int ret, t;
+
+ request = get_rndis_request(dev, REMOTE_NDIS_INITIALIZE_MSG,
+ RNDIS_MESSAGE_SIZE(struct rndis_initialize_request));
+ if (!request) {
+ ret = -1;
+ goto Cleanup;
+ }
+
+ /* Setup the rndis set */
+ init = &request->request_msg.msg.init_req;
+ init->major_ver = RNDIS_MAJOR_VERSION;
+ init->minor_ver = RNDIS_MINOR_VERSION;
+ /* FIXME: Use 1536 - rounded ethernet frame size */
+ init->max_xfer_size = 2048;
+
+ dev->state = RNDIS_DEV_INITIALIZING;
+
+ ret = rndis_filter_send_request(dev, request);
+ if (ret != 0) {
+ dev->state = RNDIS_DEV_UNINITIALIZED;
+ goto Cleanup;
+ }
+
+
+ t = wait_for_completion_timeout(&request->wait_event, HZ);
+
+ if (t == 0) {
+ ret = -ETIMEDOUT;
+ goto Cleanup;
+ }
+
+ init_complete = &request->response_msg.msg.init_complete;
+ status = init_complete->status;
+ if (status == RNDIS_STATUS_SUCCESS) {
+ dev->state = RNDIS_DEV_INITIALIZED;
+ ret = 0;
+ } else {
+ dev->state = RNDIS_DEV_UNINITIALIZED;
+ ret = -1;
+ }
+
+Cleanup:
+ if (request)
+ put_rndis_request(dev, request);
+
+ return ret;
+}
+
+static void rndis_filter_halt_device(struct rndis_device *dev)
+{
+ struct rndis_request *request;
+ struct rndis_halt_request *halt;
+
+ /* Attempt to do a rndis device halt */
+ request = get_rndis_request(dev, REMOTE_NDIS_HALT_MSG,
+ RNDIS_MESSAGE_SIZE(struct rndis_halt_request));
+ if (!request)
+ goto Cleanup;
+
+ /* Setup the rndis set */
+ halt = &request->request_msg.msg.halt_req;
+ halt->req_id = atomic_inc_return(&dev->new_req_id);
+
+ /* Ignore return since this msg is optional. */
+ rndis_filter_send_request(dev, request);
+
+ dev->state = RNDIS_DEV_UNINITIALIZED;
+
+Cleanup:
+ if (request)
+ put_rndis_request(dev, request);
+ return;
+}
+
+static int rndis_filter_open_device(struct rndis_device *dev)
+{
+ int ret;
+
+ if (dev->state != RNDIS_DEV_INITIALIZED)
+ return 0;
+
+ ret = rndis_filter_set_packet_filter(dev,
+ NDIS_PACKET_TYPE_BROADCAST |
+ NDIS_PACKET_TYPE_ALL_MULTICAST |
+ NDIS_PACKET_TYPE_DIRECTED);
+ if (ret == 0)
+ dev->state = RNDIS_DEV_DATAINITIALIZED;
+
+ return ret;
+}
+
+static int rndis_filter_close_device(struct rndis_device *dev)
+{
+ int ret;
+
+ if (dev->state != RNDIS_DEV_DATAINITIALIZED)
+ return 0;
+
+ ret = rndis_filter_set_packet_filter(dev, 0);
+ if (ret == 0)
+ dev->state = RNDIS_DEV_INITIALIZED;
+
+ return ret;
+}
+
+int rndis_filter_device_add(struct hv_device *dev,
+ void *additional_info)
+{
+ int ret;
+ struct netvsc_device *netDevice;
+ struct rndis_device *rndisDevice;
+ struct netvsc_device_info *deviceInfo = additional_info;
+
+ rndisDevice = get_rndis_device();
+ if (!rndisDevice)
+ return -1;
+
+ /*
+ * Let the inner driver handle this first to create the netvsc channel
+ * NOTE! Once the channel is created, we may get a receive callback
+ * (RndisFilterOnReceive()) before this call is completed
+ */
+ ret = netvsc_device_add(dev, additional_info);
+ if (ret != 0) {
+ kfree(rndisDevice);
+ return ret;
+ }
+
+
+ /* Initialize the rndis device */
+ netDevice = dev->ext;
+
+ netDevice->extension = rndisDevice;
+ rndisDevice->net_dev = netDevice;
+
+ /* Send the rndis initialization message */
+ ret = rndis_filter_init_device(rndisDevice);
+ if (ret != 0) {
+ /*
+ * TODO: If rndis init failed, we will need to shut down the
+ * channel
+ */
+ }
+
+ /* Get the mac address */
+ ret = rndis_filter_query_device_mac(rndisDevice);
+ if (ret != 0) {
+ /*
+ * TODO: shutdown rndis device and the channel
+ */
+ }
+
+ memcpy(deviceInfo->mac_adr, rndisDevice->hw_mac_adr, ETH_ALEN);
+
+ rndis_filter_query_device_link_status(rndisDevice);
+
+ deviceInfo->link_state = rndisDevice->link_stat;
+
+ dev_info(&dev->device, "Device MAC %pM link state %s",
+ rndisDevice->hw_mac_adr,
+ ((deviceInfo->link_state) ? ("down\n") : ("up\n")));
+
+ return ret;
+}
+
+void rndis_filter_device_remove(struct hv_device *dev)
+{
+ struct netvsc_device *net_dev = dev->ext;
+ struct rndis_device *rndis_dev = net_dev->extension;
+
+ /* Halt and release the rndis device */
+ rndis_filter_halt_device(rndis_dev);
+
+ kfree(rndis_dev);
+ net_dev->extension = NULL;
+
+ netvsc_device_remove(dev);
+}
+
+
+int rndis_filter_open(struct hv_device *dev)
+{
+ struct netvsc_device *netDevice = dev->ext;
+
+ if (!netDevice)
+ return -EINVAL;
+
+ return rndis_filter_open_device(netDevice->extension);
+}
+
+int rndis_filter_close(struct hv_device *dev)
+{
+ struct netvsc_device *netDevice = dev->ext;
+
+ if (!netDevice)
+ return -EINVAL;
+
+ return rndis_filter_close_device(netDevice->extension);
+}
+
+int rndis_filter_send(struct hv_device *dev,
+ struct hv_netvsc_packet *pkt)
+{
+ int ret;
+ struct rndis_filter_packet *filterPacket;
+ struct rndis_message *rndisMessage;
+ struct rndis_packet *rndisPacket;
+ u32 rndisMessageSize;
+
+ /* Add the rndis header */
+ filterPacket = (struct rndis_filter_packet *)pkt->extension;
+
+ memset(filterPacket, 0, sizeof(struct rndis_filter_packet));
+
+ rndisMessage = &filterPacket->msg;
+ rndisMessageSize = RNDIS_MESSAGE_SIZE(struct rndis_packet);
+
+ rndisMessage->ndis_msg_type = REMOTE_NDIS_PACKET_MSG;
+ rndisMessage->msg_len = pkt->total_data_buflen +
+ rndisMessageSize;
+
+ rndisPacket = &rndisMessage->msg.pkt;
+ rndisPacket->data_offset = sizeof(struct rndis_packet);
+ rndisPacket->data_len = pkt->total_data_buflen;
+
+ pkt->is_data_pkt = true;
+ pkt->page_buf[0].pfn = virt_to_phys(rndisMessage) >> PAGE_SHIFT;
+ pkt->page_buf[0].offset =
+ (unsigned long)rndisMessage & (PAGE_SIZE-1);
+ pkt->page_buf[0].len = rndisMessageSize;
+
+ /* Save the packet send completion and context */
+ filterPacket->completion = pkt->completion.send.send_completion;
+ filterPacket->completion_ctx =
+ pkt->completion.send.send_completion_ctx;
+
+ /* Use ours */
+ pkt->completion.send.send_completion = rndis_filter_send_completion;
+ pkt->completion.send.send_completion_ctx = filterPacket;
+
+ ret = netvsc_send(dev, pkt);
+ if (ret != 0) {
+ /*
+ * Reset the completion to originals to allow retries from
+ * above
+ */
+ pkt->completion.send.send_completion =
+ filterPacket->completion;
+ pkt->completion.send.send_completion_ctx =
+ filterPacket->completion_ctx;
+ }
+
+ return ret;
+}
+
+static void rndis_filter_send_completion(void *ctx)
+{
+ struct rndis_filter_packet *filterPacket = ctx;
+
+ /* Pass it back to the original handler */
+ filterPacket->completion(filterPacket->completion_ctx);
+}
+
+
+static void rndis_filter_send_request_completion(void *ctx)
+{
+ /* Noop */
+}
@@ -22,13 +22,6 @@ config HYPERV_BLOCK
help
Select this option to enable the Hyper-V virtual block driver.
-config HYPERV_NET
- tristate "Microsoft Hyper-V virtual network driver"
- depends on NET
- default HYPERV
- help
- Select this option to enable the Hyper-V virtual network driver.
-
config HYPERV_UTILS
tristate "Microsoft Hyper-V Utilities driver"
depends on CONNECTOR && NLS
@@ -1,7 +1,6 @@
obj-$(CONFIG_HYPERV) += hv_vmbus.o hv_timesource.o
obj-$(CONFIG_HYPERV_STORAGE) += hv_storvsc.o
obj-$(CONFIG_HYPERV_BLOCK) += hv_blkvsc.o
-obj-$(CONFIG_HYPERV_NET) += hv_netvsc.o
obj-$(CONFIG_HYPERV_UTILS) += hv_utils.o
obj-$(CONFIG_HYPERV_MOUSE) += hv_mouse.o
@@ -10,5 +9,4 @@ hv_vmbus-y := vmbus_drv.o \
channel_mgmt.o ring_buffer.o
hv_storvsc-y := storvsc_drv.o storvsc.o
hv_blkvsc-y := blkvsc_drv.o storvsc.o
-hv_netvsc-y := netvsc_drv.o netvsc.o rndis_filter.o
hv_utils-y := hv_util.o hv_kvp.o
deleted file mode 100644
@@ -1,1057 +0,0 @@
-/*
- *
- * Copyright (c) 2011, Microsoft Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Authors:
- * Haiyang Zhang <haiyangz@microsoft.com>
- * Hank Janssen <hjanssen@microsoft.com>
- * K. Y. Srinivasan <kys@microsoft.com>
- *
- */
-
-#ifndef _HYPERV_NET_H
-#define _HYPERV_NET_H
-
-#include <linux/list.h>
-#include "hyperv.h"
-
-/* Fwd declaration */
-struct hv_netvsc_packet;
-
-/* Represent the xfer page packet which contains 1 or more netvsc packet */
-struct xferpage_packet {
- struct list_head list_ent;
-
- /* # of netvsc packets this xfer packet contains */
- u32 count;
-};
-
-/* The number of pages which are enough to cover jumbo frame buffer. */
-#define NETVSC_PACKET_MAXPAGE 4
-
-/*
- * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
- * within the RNDIS
- */
-struct hv_netvsc_packet {
- /* Bookkeeping stuff */
- struct list_head list_ent;
-
- struct hv_device *device;
- bool is_data_pkt;
-
- /*
- * Valid only for receives when we break a xfer page packet
- * into multiple netvsc packets
- */
- struct xferpage_packet *xfer_page_pkt;
-
- union {
- struct {
- u64 recv_completion_tid;
- void *recv_completion_ctx;
- void (*recv_completion)(void *context);
- } recv;
- struct {
- u64 send_completion_tid;
- void *send_completion_ctx;
- void (*send_completion)(void *context);
- } send;
- } completion;
-
- /* This points to the memory after page_buf */
- void *extension;
-
- u32 total_data_buflen;
- /* Points to the send/receive buffer where the ethernet frame is */
- u32 page_buf_cnt;
- struct hv_page_buffer page_buf[NETVSC_PACKET_MAXPAGE];
-};
-
-struct netvsc_device_info {
- unsigned char mac_adr[6];
- bool link_state; /* 0 - link up, 1 - link down */
- int ring_size;
-};
-
-/* Interface */
-int netvsc_device_add(struct hv_device *device, void *additional_info);
-int netvsc_device_remove(struct hv_device *device);
-int netvsc_send(struct hv_device *device,
- struct hv_netvsc_packet *packet);
-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);
-int netvsc_initialize(struct hv_driver *drv);
-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,
- void *additional_info);
-void rndis_filter_device_remove(struct hv_device *dev);
-int rndis_filter_receive(struct hv_device *dev,
- struct hv_netvsc_packet *pkt);
-
-
-
-int rndis_filter_send(struct hv_device *dev,
- struct hv_netvsc_packet *pkt);
-
-#define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
-
-#define NVSP_PROTOCOL_VERSION_1 2
-#define NVSP_MIN_PROTOCOL_VERSION NVSP_PROTOCOL_VERSION_1
-#define NVSP_MAX_PROTOCOL_VERSION NVSP_PROTOCOL_VERSION_1
-
-enum {
- NVSP_MSG_TYPE_NONE = 0,
-
- /* Init Messages */
- NVSP_MSG_TYPE_INIT = 1,
- NVSP_MSG_TYPE_INIT_COMPLETE = 2,
-
- NVSP_VERSION_MSG_START = 100,
-
- /* Version 1 Messages */
- NVSP_MSG1_TYPE_SEND_NDIS_VER = NVSP_VERSION_MSG_START,
-
- NVSP_MSG1_TYPE_SEND_RECV_BUF,
- NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE,
- NVSP_MSG1_TYPE_REVOKE_RECV_BUF,
-
- NVSP_MSG1_TYPE_SEND_SEND_BUF,
- NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE,
- NVSP_MSG1_TYPE_REVOKE_SEND_BUF,
-
- NVSP_MSG1_TYPE_SEND_RNDIS_PKT,
- NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE,
-
- /*
- * This should be set to the number of messages for the version with
- * the maximum number of messages.
- */
- NVSP_NUM_MSG_PER_VERSION = 9,
-};
-
-enum {
- NVSP_STAT_NONE = 0,
- NVSP_STAT_SUCCESS,
- NVSP_STAT_FAIL,
- NVSP_STAT_PROTOCOL_TOO_NEW,
- NVSP_STAT_PROTOCOL_TOO_OLD,
- NVSP_STAT_INVALID_RNDIS_PKT,
- NVSP_STAT_BUSY,
- NVSP_STAT_MAX,
-};
-
-struct nvsp_message_header {
- u32 msg_type;
-};
-
-/* Init Messages */
-
-/*
- * This message is used by the VSC to initialize the channel after the channels
- * has been opened. This message should never include anything other then
- * versioning (i.e. this message will be the same for ever).
- */
-struct nvsp_message_init {
- u32 min_protocol_ver;
- u32 max_protocol_ver;
-} __packed;
-
-/*
- * This message is used by the VSP to complete the initialization of the
- * channel. This message should never include anything other then versioning
- * (i.e. this message will be the same for ever).
- */
-struct nvsp_message_init_complete {
- u32 negotiated_protocol_ver;
- u32 max_mdl_chain_len;
- u32 status;
-} __packed;
-
-union nvsp_message_init_uber {
- struct nvsp_message_init init;
- struct nvsp_message_init_complete init_complete;
-} __packed;
-
-/* Version 1 Messages */
-
-/*
- * This message is used by the VSC to send the NDIS version to the VSP. The VSP
- * can use this information when handling OIDs sent by the VSC.
- */
-struct nvsp_1_message_send_ndis_version {
- u32 ndis_major_ver;
- u32 ndis_minor_ver;
-} __packed;
-
-/*
- * This message is used by the VSC to send a receive buffer to the VSP. The VSP
- * can then use the receive buffer to send data to the VSC.
- */
-struct nvsp_1_message_send_receive_buffer {
- u32 gpadl_handle;
- u16 id;
-} __packed;
-
-struct nvsp_1_receive_buffer_section {
- u32 offset;
- u32 sub_alloc_size;
- u32 num_sub_allocs;
- u32 end_offset;
-} __packed;
-
-/*
- * This message is used by the VSP to acknowledge a receive buffer send by the
- * VSC. This message must be sent by the VSP before the VSP uses the receive
- * buffer.
- */
-struct nvsp_1_message_send_receive_buffer_complete {
- u32 status;
- u32 num_sections;
-
- /*
- * The receive buffer is split into two parts, a large suballocation
- * section and a small suballocation section. These sections are then
- * suballocated by a certain size.
- */
-
- /*
- * For example, the following break up of the receive buffer has 6
- * large suballocations and 10 small suballocations.
- */
-
- /*
- * | Large Section | | Small Section |
- * ------------------------------------------------------------
- * | | | | | | | | | | | | | | | | | |
- * | |
- * LargeOffset SmallOffset
- */
-
- struct nvsp_1_receive_buffer_section sections[1];
-} __packed;
-
-/*
- * This message is sent by the VSC to revoke the receive buffer. After the VSP
- * completes this transaction, the vsp should never use the receive buffer
- * again.
- */
-struct nvsp_1_message_revoke_receive_buffer {
- u16 id;
-};
-
-/*
- * This message is used by the VSC to send a send buffer to the VSP. The VSC
- * can then use the send buffer to send data to the VSP.
- */
-struct nvsp_1_message_send_send_buffer {
- u32 gpadl_handle;
- u16 id;
-} __packed;
-
-/*
- * This message is used by the VSP to acknowledge a send buffer sent by the
- * VSC. This message must be sent by the VSP before the VSP uses the sent
- * buffer.
- */
-struct nvsp_1_message_send_send_buffer_complete {
- u32 status;
-
- /*
- * The VSC gets to choose the size of the send buffer and the VSP gets
- * to choose the sections size of the buffer. This was done to enable
- * dynamic reconfigurations when the cost of GPA-direct buffers
- * decreases.
- */
- u32 section_size;
-} __packed;
-
-/*
- * This message is sent by the VSC to revoke the send buffer. After the VSP
- * completes this transaction, the vsp should never use the send buffer again.
- */
-struct nvsp_1_message_revoke_send_buffer {
- u16 id;
-};
-
-/*
- * This message is used by both the VSP and the VSC to send a RNDIS message to
- * the opposite channel endpoint.
- */
-struct nvsp_1_message_send_rndis_packet {
- /*
- * This field is specified by RNIDS. They assume there's two different
- * channels of communication. However, the Network VSP only has one.
- * Therefore, the channel travels with the RNDIS packet.
- */
- u32 channel_type;
-
- /*
- * This field is used to send part or all of the data through a send
- * buffer. This values specifies an index into the send buffer. If the
- * index is 0xFFFFFFFF, then the send buffer is not being used and all
- * of the data was sent through other VMBus mechanisms.
- */
- u32 send_buf_section_index;
- u32 send_buf_section_size;
-} __packed;
-
-/*
- * This message is used by both the VSP and the VSC to complete a RNDIS message
- * to the opposite channel endpoint. At this point, the initiator of this
- * message cannot use any resources associated with the original RNDIS packet.
- */
-struct nvsp_1_message_send_rndis_packet_complete {
- u32 status;
-};
-
-union nvsp_1_message_uber {
- struct nvsp_1_message_send_ndis_version send_ndis_ver;
-
- struct nvsp_1_message_send_receive_buffer send_recv_buf;
- struct nvsp_1_message_send_receive_buffer_complete
- send_recv_buf_complete;
- struct nvsp_1_message_revoke_receive_buffer revoke_recv_buf;
-
- struct nvsp_1_message_send_send_buffer send_send_buf;
- struct nvsp_1_message_send_send_buffer_complete send_send_buf_complete;
- struct nvsp_1_message_revoke_send_buffer revoke_send_buf;
-
- struct nvsp_1_message_send_rndis_packet send_rndis_pkt;
- struct nvsp_1_message_send_rndis_packet_complete
- send_rndis_pkt_complete;
-} __packed;
-
-union nvsp_all_messages {
- union nvsp_message_init_uber init_msg;
- union nvsp_1_message_uber v1_msg;
-} __packed;
-
-/* ALL Messages */
-struct nvsp_message {
- struct nvsp_message_header hdr;
- union nvsp_all_messages msg;
-} __packed;
-
-
-
-
-/* #define NVSC_MIN_PROTOCOL_VERSION 1 */
-/* #define NVSC_MAX_PROTOCOL_VERSION 1 */
-
-#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024) /* 1MB */
-
-#define NETVSC_RECEIVE_BUFFER_ID 0xcafe
-
-#define NETVSC_RECEIVE_SG_COUNT 1
-
-/* Preallocated receive packets */
-#define NETVSC_RECEIVE_PACKETLIST_COUNT 256
-
-#define NETVSC_PACKET_SIZE 2048
-
-/* Per netvsc channel-specific */
-struct netvsc_device {
- struct hv_device *dev;
-
- atomic_t refcnt;
- atomic_t num_outstanding_sends;
- /*
- * List of free preallocated hv_netvsc_packet to represent receive
- * packet
- */
- struct list_head recv_pkt_list;
- spinlock_t recv_pkt_list_lock;
-
- /* Receive buffer allocated by us but manages by NetVSP */
- void *recv_buf;
- u32 recv_buf_size;
- u32 recv_buf_gpadl_handle;
- u32 recv_section_cnt;
- struct nvsp_1_receive_buffer_section *recv_section;
-
- /* Used for NetVSP initialization protocol */
- struct completion channel_init_wait;
- struct nvsp_message channel_init_pkt;
-
- struct nvsp_message revoke_packet;
- /* unsigned char HwMacAddr[HW_MACADDR_LEN]; */
-
- /* Holds rndis device info */
- void *extension;
-};
-
-
-/* Status codes */
-
-
-#ifndef STATUS_SUCCESS
-#define STATUS_SUCCESS (0x00000000L)
-#endif
-
-#ifndef STATUS_UNSUCCESSFUL
-#define STATUS_UNSUCCESSFUL (0xC0000001L)
-#endif
-
-#ifndef STATUS_PENDING
-#define STATUS_PENDING (0x00000103L)
-#endif
-
-#ifndef STATUS_INSUFFICIENT_RESOURCES
-#define STATUS_INSUFFICIENT_RESOURCES (0xC000009AL)
-#endif
-
-#ifndef STATUS_BUFFER_OVERFLOW
-#define STATUS_BUFFER_OVERFLOW (0x80000005L)
-#endif
-
-#ifndef STATUS_NOT_SUPPORTED
-#define STATUS_NOT_SUPPORTED (0xC00000BBL)
-#endif
-
-#define RNDIS_STATUS_SUCCESS (STATUS_SUCCESS)
-#define RNDIS_STATUS_PENDING (STATUS_PENDING)
-#define RNDIS_STATUS_NOT_RECOGNIZED (0x00010001L)
-#define RNDIS_STATUS_NOT_COPIED (0x00010002L)
-#define RNDIS_STATUS_NOT_ACCEPTED (0x00010003L)
-#define RNDIS_STATUS_CALL_ACTIVE (0x00010007L)
-
-#define RNDIS_STATUS_ONLINE (0x40010003L)
-#define RNDIS_STATUS_RESET_START (0x40010004L)
-#define RNDIS_STATUS_RESET_END (0x40010005L)
-#define RNDIS_STATUS_RING_STATUS (0x40010006L)
-#define RNDIS_STATUS_CLOSED (0x40010007L)
-#define RNDIS_STATUS_WAN_LINE_UP (0x40010008L)
-#define RNDIS_STATUS_WAN_LINE_DOWN (0x40010009L)
-#define RNDIS_STATUS_WAN_FRAGMENT (0x4001000AL)
-#define RNDIS_STATUS_MEDIA_CONNECT (0x4001000BL)
-#define RNDIS_STATUS_MEDIA_DISCONNECT (0x4001000CL)
-#define RNDIS_STATUS_HARDWARE_LINE_UP (0x4001000DL)
-#define RNDIS_STATUS_HARDWARE_LINE_DOWN (0x4001000EL)
-#define RNDIS_STATUS_INTERFACE_UP (0x4001000FL)
-#define RNDIS_STATUS_INTERFACE_DOWN (0x40010010L)
-#define RNDIS_STATUS_MEDIA_BUSY (0x40010011L)
-#define RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION (0x40010012L)
-#define RNDIS_STATUS_WW_INDICATION RDIA_SPECIFIC_INDICATION
-#define RNDIS_STATUS_LINK_SPEED_CHANGE (0x40010013L)
-
-#define RNDIS_STATUS_NOT_RESETTABLE (0x80010001L)
-#define RNDIS_STATUS_SOFT_ERRORS (0x80010003L)
-#define RNDIS_STATUS_HARD_ERRORS (0x80010004L)
-#define RNDIS_STATUS_BUFFER_OVERFLOW (STATUS_BUFFER_OVERFLOW)
-
-#define RNDIS_STATUS_FAILURE (STATUS_UNSUCCESSFUL)
-#define RNDIS_STATUS_RESOURCES (STATUS_INSUFFICIENT_RESOURCES)
-#define RNDIS_STATUS_CLOSING (0xC0010002L)
-#define RNDIS_STATUS_BAD_VERSION (0xC0010004L)
-#define RNDIS_STATUS_BAD_CHARACTERISTICS (0xC0010005L)
-#define RNDIS_STATUS_ADAPTER_NOT_FOUND (0xC0010006L)
-#define RNDIS_STATUS_OPEN_FAILED (0xC0010007L)
-#define RNDIS_STATUS_DEVICE_FAILED (0xC0010008L)
-#define RNDIS_STATUS_MULTICAST_FULL (0xC0010009L)
-#define RNDIS_STATUS_MULTICAST_EXISTS (0xC001000AL)
-#define RNDIS_STATUS_MULTICAST_NOT_FOUND (0xC001000BL)
-#define RNDIS_STATUS_REQUEST_ABORTED (0xC001000CL)
-#define RNDIS_STATUS_RESET_IN_PROGRESS (0xC001000DL)
-#define RNDIS_STATUS_CLOSING_INDICATING (0xC001000EL)
-#define RNDIS_STATUS_NOT_SUPPORTED (STATUS_NOT_SUPPORTED)
-#define RNDIS_STATUS_INVALID_PACKET (0xC001000FL)
-#define RNDIS_STATUS_OPEN_LIST_FULL (0xC0010010L)
-#define RNDIS_STATUS_ADAPTER_NOT_READY (0xC0010011L)
-#define RNDIS_STATUS_ADAPTER_NOT_OPEN (0xC0010012L)
-#define RNDIS_STATUS_NOT_INDICATING (0xC0010013L)
-#define RNDIS_STATUS_INVALID_LENGTH (0xC0010014L)
-#define RNDIS_STATUS_INVALID_DATA (0xC0010015L)
-#define RNDIS_STATUS_BUFFER_TOO_SHORT (0xC0010016L)
-#define RNDIS_STATUS_INVALID_OID (0xC0010017L)
-#define RNDIS_STATUS_ADAPTER_REMOVED (0xC0010018L)
-#define RNDIS_STATUS_UNSUPPORTED_MEDIA (0xC0010019L)
-#define RNDIS_STATUS_GROUP_ADDRESS_IN_USE (0xC001001AL)
-#define RNDIS_STATUS_FILE_NOT_FOUND (0xC001001BL)
-#define RNDIS_STATUS_ERROR_READING_FILE (0xC001001CL)
-#define RNDIS_STATUS_ALREADY_MAPPED (0xC001001DL)
-#define RNDIS_STATUS_RESOURCE_CONFLICT (0xC001001EL)
-#define RNDIS_STATUS_NO_CABLE (0xC001001FL)
-
-#define RNDIS_STATUS_INVALID_SAP (0xC0010020L)
-#define RNDIS_STATUS_SAP_IN_USE (0xC0010021L)
-#define RNDIS_STATUS_INVALID_ADDRESS (0xC0010022L)
-#define RNDIS_STATUS_VC_NOT_ACTIVATED (0xC0010023L)
-#define RNDIS_STATUS_DEST_OUT_OF_ORDER (0xC0010024L)
-#define RNDIS_STATUS_VC_NOT_AVAILABLE (0xC0010025L)
-#define RNDIS_STATUS_CELLRATE_NOT_AVAILABLE (0xC0010026L)
-#define RNDIS_STATUS_INCOMPATABLE_QOS (0xC0010027L)
-#define RNDIS_STATUS_AAL_PARAMS_UNSUPPORTED (0xC0010028L)
-#define RNDIS_STATUS_NO_ROUTE_TO_DESTINATION (0xC0010029L)
-
-#define RNDIS_STATUS_TOKEN_RING_OPEN_ERROR (0xC0011000L)
-
-/* Object Identifiers used by NdisRequest Query/Set Information */
-/* General Objects */
-#define RNDIS_OID_GEN_SUPPORTED_LIST 0x00010101
-#define RNDIS_OID_GEN_HARDWARE_STATUS 0x00010102
-#define RNDIS_OID_GEN_MEDIA_SUPPORTED 0x00010103
-#define RNDIS_OID_GEN_MEDIA_IN_USE 0x00010104
-#define RNDIS_OID_GEN_MAXIMUM_LOOKAHEAD 0x00010105
-#define RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE 0x00010106
-#define RNDIS_OID_GEN_LINK_SPEED 0x00010107
-#define RNDIS_OID_GEN_TRANSMIT_BUFFER_SPACE 0x00010108
-#define RNDIS_OID_GEN_RECEIVE_BUFFER_SPACE 0x00010109
-#define RNDIS_OID_GEN_TRANSMIT_BLOCK_SIZE 0x0001010A
-#define RNDIS_OID_GEN_RECEIVE_BLOCK_SIZE 0x0001010B
-#define RNDIS_OID_GEN_VENDOR_ID 0x0001010C
-#define RNDIS_OID_GEN_VENDOR_DESCRIPTION 0x0001010D
-#define RNDIS_OID_GEN_CURRENT_PACKET_FILTER 0x0001010E
-#define RNDIS_OID_GEN_CURRENT_LOOKAHEAD 0x0001010F
-#define RNDIS_OID_GEN_DRIVER_VERSION 0x00010110
-#define RNDIS_OID_GEN_MAXIMUM_TOTAL_SIZE 0x00010111
-#define RNDIS_OID_GEN_PROTOCOL_OPTIONS 0x00010112
-#define RNDIS_OID_GEN_MAC_OPTIONS 0x00010113
-#define RNDIS_OID_GEN_MEDIA_CONNECT_STATUS 0x00010114
-#define RNDIS_OID_GEN_MAXIMUM_SEND_PACKETS 0x00010115
-#define RNDIS_OID_GEN_VENDOR_DRIVER_VERSION 0x00010116
-#define RNDIS_OID_GEN_NETWORK_LAYER_ADDRESSES 0x00010118
-#define RNDIS_OID_GEN_TRANSPORT_HEADER_OFFSET 0x00010119
-#define RNDIS_OID_GEN_MACHINE_NAME 0x0001021A
-#define RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER 0x0001021B
-
-#define RNDIS_OID_GEN_XMIT_OK 0x00020101
-#define RNDIS_OID_GEN_RCV_OK 0x00020102
-#define RNDIS_OID_GEN_XMIT_ERROR 0x00020103
-#define RNDIS_OID_GEN_RCV_ERROR 0x00020104
-#define RNDIS_OID_GEN_RCV_NO_BUFFER 0x00020105
-
-#define RNDIS_OID_GEN_DIRECTED_BYTES_XMIT 0x00020201
-#define RNDIS_OID_GEN_DIRECTED_FRAMES_XMIT 0x00020202
-#define RNDIS_OID_GEN_MULTICAST_BYTES_XMIT 0x00020203
-#define RNDIS_OID_GEN_MULTICAST_FRAMES_XMIT 0x00020204
-#define RNDIS_OID_GEN_BROADCAST_BYTES_XMIT 0x00020205
-#define RNDIS_OID_GEN_BROADCAST_FRAMES_XMIT 0x00020206
-#define RNDIS_OID_GEN_DIRECTED_BYTES_RCV 0x00020207
-#define RNDIS_OID_GEN_DIRECTED_FRAMES_RCV 0x00020208
-#define RNDIS_OID_GEN_MULTICAST_BYTES_RCV 0x00020209
-#define RNDIS_OID_GEN_MULTICAST_FRAMES_RCV 0x0002020A
-#define RNDIS_OID_GEN_BROADCAST_BYTES_RCV 0x0002020B
-#define RNDIS_OID_GEN_BROADCAST_FRAMES_RCV 0x0002020C
-
-#define RNDIS_OID_GEN_RCV_CRC_ERROR 0x0002020D
-#define RNDIS_OID_GEN_TRANSMIT_QUEUE_LENGTH 0x0002020E
-
-#define RNDIS_OID_GEN_GET_TIME_CAPS 0x0002020F
-#define RNDIS_OID_GEN_GET_NETCARD_TIME 0x00020210
-
-/* These are connection-oriented general OIDs. */
-/* These replace the above OIDs for connection-oriented media. */
-#define RNDIS_OID_GEN_CO_SUPPORTED_LIST 0x00010101
-#define RNDIS_OID_GEN_CO_HARDWARE_STATUS 0x00010102
-#define RNDIS_OID_GEN_CO_MEDIA_SUPPORTED 0x00010103
-#define RNDIS_OID_GEN_CO_MEDIA_IN_USE 0x00010104
-#define RNDIS_OID_GEN_CO_LINK_SPEED 0x00010105
-#define RNDIS_OID_GEN_CO_VENDOR_ID 0x00010106
-#define RNDIS_OID_GEN_CO_VENDOR_DESCRIPTION 0x00010107
-#define RNDIS_OID_GEN_CO_DRIVER_VERSION 0x00010108
-#define RNDIS_OID_GEN_CO_PROTOCOL_OPTIONS 0x00010109
-#define RNDIS_OID_GEN_CO_MAC_OPTIONS 0x0001010A
-#define RNDIS_OID_GEN_CO_MEDIA_CONNECT_STATUS 0x0001010B
-#define RNDIS_OID_GEN_CO_VENDOR_DRIVER_VERSION 0x0001010C
-#define RNDIS_OID_GEN_CO_MINIMUM_LINK_SPEED 0x0001010D
-
-#define RNDIS_OID_GEN_CO_GET_TIME_CAPS 0x00010201
-#define RNDIS_OID_GEN_CO_GET_NETCARD_TIME 0x00010202
-
-/* These are connection-oriented statistics OIDs. */
-#define RNDIS_OID_GEN_CO_XMIT_PDUS_OK 0x00020101
-#define RNDIS_OID_GEN_CO_RCV_PDUS_OK 0x00020102
-#define RNDIS_OID_GEN_CO_XMIT_PDUS_ERROR 0x00020103
-#define RNDIS_OID_GEN_CO_RCV_PDUS_ERROR 0x00020104
-#define RNDIS_OID_GEN_CO_RCV_PDUS_NO_BUFFER 0x00020105
-
-
-#define RNDIS_OID_GEN_CO_RCV_CRC_ERROR 0x00020201
-#define RNDIS_OID_GEN_CO_TRANSMIT_QUEUE_LENGTH 0x00020202
-#define RNDIS_OID_GEN_CO_BYTES_XMIT 0x00020203
-#define RNDIS_OID_GEN_CO_BYTES_RCV 0x00020204
-#define RNDIS_OID_GEN_CO_BYTES_XMIT_OUTSTANDING 0x00020205
-#define RNDIS_OID_GEN_CO_NETCARD_LOAD 0x00020206
-
-/* These are objects for Connection-oriented media call-managers. */
-#define RNDIS_OID_CO_ADD_PVC 0xFF000001
-#define RNDIS_OID_CO_DELETE_PVC 0xFF000002
-#define RNDIS_OID_CO_GET_CALL_INFORMATION 0xFF000003
-#define RNDIS_OID_CO_ADD_ADDRESS 0xFF000004
-#define RNDIS_OID_CO_DELETE_ADDRESS 0xFF000005
-#define RNDIS_OID_CO_GET_ADDRESSES 0xFF000006
-#define RNDIS_OID_CO_ADDRESS_CHANGE 0xFF000007
-#define RNDIS_OID_CO_SIGNALING_ENABLED 0xFF000008
-#define RNDIS_OID_CO_SIGNALING_DISABLED 0xFF000009
-
-/* 802.3 Objects (Ethernet) */
-#define RNDIS_OID_802_3_PERMANENT_ADDRESS 0x01010101
-#define RNDIS_OID_802_3_CURRENT_ADDRESS 0x01010102
-#define RNDIS_OID_802_3_MULTICAST_LIST 0x01010103
-#define RNDIS_OID_802_3_MAXIMUM_LIST_SIZE 0x01010104
-#define RNDIS_OID_802_3_MAC_OPTIONS 0x01010105
-
-#define NDIS_802_3_MAC_OPTION_PRIORITY 0x00000001
-
-#define RNDIS_OID_802_3_RCV_ERROR_ALIGNMENT 0x01020101
-#define RNDIS_OID_802_3_XMIT_ONE_COLLISION 0x01020102
-#define RNDIS_OID_802_3_XMIT_MORE_COLLISIONS 0x01020103
-
-#define RNDIS_OID_802_3_XMIT_DEFERRED 0x01020201
-#define RNDIS_OID_802_3_XMIT_MAX_COLLISIONS 0x01020202
-#define RNDIS_OID_802_3_RCV_OVERRUN 0x01020203
-#define RNDIS_OID_802_3_XMIT_UNDERRUN 0x01020204
-#define RNDIS_OID_802_3_XMIT_HEARTBEAT_FAILURE 0x01020205
-#define RNDIS_OID_802_3_XMIT_TIMES_CRS_LOST 0x01020206
-#define RNDIS_OID_802_3_XMIT_LATE_COLLISIONS 0x01020207
-
-/* Remote NDIS message types */
-#define REMOTE_NDIS_PACKET_MSG 0x00000001
-#define REMOTE_NDIS_INITIALIZE_MSG 0x00000002
-#define REMOTE_NDIS_HALT_MSG 0x00000003
-#define REMOTE_NDIS_QUERY_MSG 0x00000004
-#define REMOTE_NDIS_SET_MSG 0x00000005
-#define REMOTE_NDIS_RESET_MSG 0x00000006
-#define REMOTE_NDIS_INDICATE_STATUS_MSG 0x00000007
-#define REMOTE_NDIS_KEEPALIVE_MSG 0x00000008
-
-#define REMOTE_CONDIS_MP_CREATE_VC_MSG 0x00008001
-#define REMOTE_CONDIS_MP_DELETE_VC_MSG 0x00008002
-#define REMOTE_CONDIS_MP_ACTIVATE_VC_MSG 0x00008005
-#define REMOTE_CONDIS_MP_DEACTIVATE_VC_MSG 0x00008006
-#define REMOTE_CONDIS_INDICATE_STATUS_MSG 0x00008007
-
-/* Remote NDIS message completion types */
-#define REMOTE_NDIS_INITIALIZE_CMPLT 0x80000002
-#define REMOTE_NDIS_QUERY_CMPLT 0x80000004
-#define REMOTE_NDIS_SET_CMPLT 0x80000005
-#define REMOTE_NDIS_RESET_CMPLT 0x80000006
-#define REMOTE_NDIS_KEEPALIVE_CMPLT 0x80000008
-
-#define REMOTE_CONDIS_MP_CREATE_VC_CMPLT 0x80008001
-#define REMOTE_CONDIS_MP_DELETE_VC_CMPLT 0x80008002
-#define REMOTE_CONDIS_MP_ACTIVATE_VC_CMPLT 0x80008005
-#define REMOTE_CONDIS_MP_DEACTIVATE_VC_CMPLT 0x80008006
-
-/*
- * Reserved message type for private communication between lower-layer host
- * driver and remote device, if necessary.
- */
-#define REMOTE_NDIS_BUS_MSG 0xff000001
-
-/* Defines for DeviceFlags in struct rndis_initialize_complete */
-#define RNDIS_DF_CONNECTIONLESS 0x00000001
-#define RNDIS_DF_CONNECTION_ORIENTED 0x00000002
-#define RNDIS_DF_RAW_DATA 0x00000004
-
-/* Remote NDIS medium types. */
-#define RNDIS_MEDIUM_802_3 0x00000000
-#define RNDIS_MEDIUM_802_5 0x00000001
-#define RNDIS_MEDIUM_FDDI 0x00000002
-#define RNDIS_MEDIUM_WAN 0x00000003
-#define RNDIS_MEDIUM_LOCAL_TALK 0x00000004
-#define RNDIS_MEDIUM_ARCNET_RAW 0x00000006
-#define RNDIS_MEDIUM_ARCNET_878_2 0x00000007
-#define RNDIS_MEDIUM_ATM 0x00000008
-#define RNDIS_MEDIUM_WIRELESS_WAN 0x00000009
-#define RNDIS_MEDIUM_IRDA 0x0000000a
-#define RNDIS_MEDIUM_CO_WAN 0x0000000b
-/* Not a real medium, defined as an upper-bound */
-#define RNDIS_MEDIUM_MAX 0x0000000d
-
-
-/* Remote NDIS medium connection states. */
-#define RNDIS_MEDIA_STATE_CONNECTED 0x00000000
-#define RNDIS_MEDIA_STATE_DISCONNECTED 0x00000001
-
-/* Remote NDIS version numbers */
-#define RNDIS_MAJOR_VERSION 0x00000001
-#define RNDIS_MINOR_VERSION 0x00000000
-
-
-/* NdisInitialize message */
-struct rndis_initialize_request {
- u32 req_id;
- u32 major_ver;
- u32 minor_ver;
- u32 max_xfer_size;
-};
-
-/* Response to NdisInitialize */
-struct rndis_initialize_complete {
- u32 req_id;
- u32 status;
- u32 major_ver;
- u32 minor_ver;
- u32 dev_flags;
- u32 medium;
- u32 max_pkt_per_msg;
- u32 max_xfer_size;
- u32 pkt_alignment_factor;
- u32 af_list_offset;
- u32 af_list_size;
-};
-
-/* Call manager devices only: Information about an address family */
-/* supported by the device is appended to the response to NdisInitialize. */
-struct rndis_co_address_family {
- u32 address_family;
- u32 major_ver;
- u32 minor_ver;
-};
-
-/* NdisHalt message */
-struct rndis_halt_request {
- u32 req_id;
-};
-
-/* NdisQueryRequest message */
-struct rndis_query_request {
- u32 req_id;
- u32 oid;
- u32 info_buflen;
- u32 info_buf_offset;
- u32 dev_vc_handle;
-};
-
-/* Response to NdisQueryRequest */
-struct rndis_query_complete {
- u32 req_id;
- u32 status;
- u32 info_buflen;
- u32 info_buf_offset;
-};
-
-/* NdisSetRequest message */
-struct rndis_set_request {
- u32 req_id;
- u32 oid;
- u32 info_buflen;
- u32 info_buf_offset;
- u32 dev_vc_handle;
-};
-
-/* Response to NdisSetRequest */
-struct rndis_set_complete {
- u32 req_id;
- u32 status;
-};
-
-/* NdisReset message */
-struct rndis_reset_request {
- u32 reserved;
-};
-
-/* Response to NdisReset */
-struct rndis_reset_complete {
- u32 status;
- u32 addressing_reset;
-};
-
-/* NdisMIndicateStatus message */
-struct rndis_indicate_status {
- u32 status;
- u32 status_buflen;
- u32 status_buf_offset;
-};
-
-/* Diagnostic information passed as the status buffer in */
-/* struct rndis_indicate_status messages signifying error conditions. */
-struct rndis_diagnostic_info {
- u32 diag_status;
- u32 error_offset;
-};
-
-/* NdisKeepAlive message */
-struct rndis_keepalive_request {
- u32 req_id;
-};
-
-/* Response to NdisKeepAlive */
-struct rndis_keepalive_complete {
- u32 req_id;
- u32 status;
-};
-
-/*
- * Data message. All Offset fields contain byte offsets from the beginning of
- * struct rndis_packet. All Length fields are in bytes. VcHandle is set
- * to 0 for connectionless data, otherwise it contains the VC handle.
- */
-struct rndis_packet {
- u32 data_offset;
- u32 data_len;
- u32 oob_data_offset;
- u32 oob_data_len;
- u32 num_oob_data_elements;
- u32 per_pkt_info_offset;
- u32 per_pkt_info_len;
- u32 vc_handle;
- u32 reserved;
-};
-
-/* Optional Out of Band data associated with a Data message. */
-struct rndis_oobd {
- u32 size;
- u32 type;
- u32 class_info_offset;
-};
-
-/* Packet extension field contents associated with a Data message. */
-struct rndis_per_packet_info {
- u32 size;
- u32 type;
- u32 per_pkt_info_offset;
-};
-
-/* Format of Information buffer passed in a SetRequest for the OID */
-/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
-struct rndis_config_parameter_info {
- u32 parameter_name_offset;
- u32 parameter_name_length;
- u32 parameter_type;
- u32 parameter_value_offset;
- u32 parameter_value_length;
-};
-
-/* Values for ParameterType in struct rndis_config_parameter_info */
-#define RNDIS_CONFIG_PARAM_TYPE_INTEGER 0
-#define RNDIS_CONFIG_PARAM_TYPE_STRING 2
-
-/* CONDIS Miniport messages for connection oriented devices */
-/* that do not implement a call manager. */
-
-/* CoNdisMiniportCreateVc message */
-struct rcondis_mp_create_vc {
- u32 req_id;
- u32 ndis_vc_handle;
-};
-
-/* Response to CoNdisMiniportCreateVc */
-struct rcondis_mp_create_vc_complete {
- u32 req_id;
- u32 dev_vc_handle;
- u32 status;
-};
-
-/* CoNdisMiniportDeleteVc message */
-struct rcondis_mp_delete_vc {
- u32 req_id;
- u32 dev_vc_handle;
-};
-
-/* Response to CoNdisMiniportDeleteVc */
-struct rcondis_mp_delete_vc_complete {
- u32 req_id;
- u32 status;
-};
-
-/* CoNdisMiniportQueryRequest message */
-struct rcondis_mp_query_request {
- u32 req_id;
- u32 request_type;
- u32 oid;
- u32 dev_vc_handle;
- u32 info_buflen;
- u32 info_buf_offset;
-};
-
-/* CoNdisMiniportSetRequest message */
-struct rcondis_mp_set_request {
- u32 req_id;
- u32 request_type;
- u32 oid;
- u32 dev_vc_handle;
- u32 info_buflen;
- u32 info_buf_offset;
-};
-
-/* CoNdisIndicateStatus message */
-struct rcondis_indicate_status {
- u32 ndis_vc_handle;
- u32 status;
- u32 status_buflen;
- u32 status_buf_offset;
-};
-
-/* CONDIS Call/VC parameters */
-struct rcondis_specific_parameters {
- u32 parameter_type;
- u32 parameter_length;
- u32 parameter_lffset;
-};
-
-struct rcondis_media_parameters {
- u32 flags;
- u32 reserved1;
- u32 reserved2;
- struct rcondis_specific_parameters media_specific;
-};
-
-struct rndis_flowspec {
- u32 token_rate;
- u32 token_bucket_size;
- u32 peak_bandwidth;
- u32 latency;
- u32 delay_variation;
- u32 service_type;
- u32 max_sdu_size;
- u32 minimum_policed_size;
-};
-
-struct rcondis_call_manager_parameters {
- struct rndis_flowspec transmit;
- struct rndis_flowspec receive;
- struct rcondis_specific_parameters call_mgr_specific;
-};
-
-/* CoNdisMiniportActivateVc message */
-struct rcondis_mp_activate_vc_request {
- u32 req_id;
- u32 flags;
- u32 dev_vc_handle;
- u32 media_params_offset;
- u32 media_params_length;
- u32 call_mgr_params_offset;
- u32 call_mgr_params_length;
-};
-
-/* Response to CoNdisMiniportActivateVc */
-struct rcondis_mp_activate_vc_complete {
- u32 req_id;
- u32 status;
-};
-
-/* CoNdisMiniportDeactivateVc message */
-struct rcondis_mp_deactivate_vc_request {
- u32 req_id;
- u32 flags;
- u32 dev_vc_handle;
-};
-
-/* Response to CoNdisMiniportDeactivateVc */
-struct rcondis_mp_deactivate_vc_complete {
- u32 req_id;
- u32 status;
-};
-
-
-/* union with all of the RNDIS messages */
-union rndis_message_container {
- struct rndis_packet pkt;
- struct rndis_initialize_request init_req;
- struct rndis_halt_request halt_req;
- struct rndis_query_request query_req;
- struct rndis_set_request set_req;
- struct rndis_reset_request reset_req;
- struct rndis_keepalive_request keep_alive_req;
- struct rndis_indicate_status indicate_status;
- struct rndis_initialize_complete init_complete;
- struct rndis_query_complete query_complete;
- struct rndis_set_complete set_complete;
- struct rndis_reset_complete reset_complete;
- struct rndis_keepalive_complete keep_alive_complete;
- struct rcondis_mp_create_vc co_miniport_create_vc;
- struct rcondis_mp_delete_vc co_miniport_delete_vc;
- struct rcondis_indicate_status co_indicate_status;
- struct rcondis_mp_activate_vc_request co_miniport_activate_vc;
- struct rcondis_mp_deactivate_vc_request co_miniport_deactivate_vc;
- struct rcondis_mp_create_vc_complete co_miniport_create_vc_complete;
- struct rcondis_mp_delete_vc_complete co_miniport_delete_vc_complete;
- struct rcondis_mp_activate_vc_complete co_miniport_activate_vc_complete;
- struct rcondis_mp_deactivate_vc_complete
- co_miniport_deactivate_vc_complete;
-};
-
-/* Remote NDIS message format */
-struct rndis_message {
- u32 ndis_msg_type;
-
- /* Total length of this message, from the beginning */
- /* of the sruct rndis_message, in bytes. */
- u32 msg_len;
-
- /* Actual message */
- union rndis_message_container msg;
-};
-
-
-struct rndis_filter_packet {
- void *completion_ctx;
- void (*completion)(void *context);
- struct rndis_message msg;
-};
-
-/* Handy macros */
-
-/* get the size of an RNDIS message. Pass in the message type, */
-/* struct rndis_set_request, struct rndis_packet for example */
-#define RNDIS_MESSAGE_SIZE(msg) \
- (sizeof(msg) + (sizeof(struct rndis_message) - \
- sizeof(union rndis_message_container)))
-
-/* get pointer to info buffer with message pointer */
-#define MESSAGE_TO_INFO_BUFFER(msg) \
- (((unsigned char *)(msg)) + msg->info_buf_offset)
-
-/* get pointer to status buffer with message pointer */
-#define MESSAGE_TO_STATUS_BUFFER(msg) \
- (((unsigned char *)(msg)) + msg->status_buf_offset)
-
-/* get pointer to OOBD buffer with message pointer */
-#define MESSAGE_TO_OOBD_BUFFER(msg) \
- (((unsigned char *)(msg)) + msg->oob_data_offset)
-
-/* get pointer to data buffer with message pointer */
-#define MESSAGE_TO_DATA_BUFFER(msg) \
- (((unsigned char *)(msg)) + msg->per_pkt_info_offset)
-
-/* get pointer to contained message from NDIS_MESSAGE pointer */
-#define RNDIS_MESSAGE_PTR_TO_MESSAGE_PTR(rndis_msg) \
- ((void *) &rndis_msg->msg)
-
-/* get pointer to contained message from NDIS_MESSAGE pointer */
-#define RNDIS_MESSAGE_RAW_PTR_TO_MESSAGE_PTR(rndis_msg) \
- ((void *) rndis_msg)
-
-
-#define __struct_bcount(x)
-
-
-
-#define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
- sizeof(union rndis_message_container))
-
-#define NDIS_PACKET_TYPE_DIRECTED 0x00000001
-#define NDIS_PACKET_TYPE_MULTICAST 0x00000002
-#define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004
-#define NDIS_PACKET_TYPE_BROADCAST 0x00000008
-#define NDIS_PACKET_TYPE_SOURCE_ROUTING 0x00000010
-#define NDIS_PACKET_TYPE_PROMISCUOUS 0x00000020
-#define NDIS_PACKET_TYPE_SMT 0x00000040
-#define NDIS_PACKET_TYPE_ALL_LOCAL 0x00000080
-#define NDIS_PACKET_TYPE_GROUP 0x00000100
-#define NDIS_PACKET_TYPE_ALL_FUNCTIONAL 0x00000200
-#define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
-#define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
-
-
-
-#endif /* _HYPERV_NET_H */
deleted file mode 100644
@@ -1,1015 +0,0 @@
-/*
- * Copyright (c) 2009, Microsoft Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Authors:
- * Haiyang Zhang <haiyangz@microsoft.com>
- * Hank Janssen <hjanssen@microsoft.com>
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/wait.h>
-#include <linux/mm.h>
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-
-#include "hyperv.h"
-#include "hyperv_net.h"
-
-
-/* Globals */
-static const char *driver_name = "netvsc";
-
-/* {F8615163-DF3E-46c5-913F-F2D2F965ED0E} */
-static const struct hv_guid netvsc_device_type = {
- .data = {
- 0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46,
- 0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E
- }
-};
-
-
-static struct netvsc_device *alloc_net_device(struct hv_device *device)
-{
- struct netvsc_device *net_device;
-
- net_device = kzalloc(sizeof(struct netvsc_device), GFP_KERNEL);
- if (!net_device)
- return NULL;
-
- /* Set to 2 to allow both inbound and outbound traffic */
- atomic_cmpxchg(&net_device->refcnt, 0, 2);
-
- net_device->dev = device;
- device->ext = net_device;
-
- return net_device;
-}
-
-static void free_net_device(struct netvsc_device *device)
-{
- WARN_ON(atomic_read(&device->refcnt) != 0);
- device->dev->ext = NULL;
- kfree(device);
-}
-
-
-/* Get the net device object iff exists and its refcount > 1 */
-static struct netvsc_device *get_outbound_net_device(struct hv_device *device)
-{
- struct netvsc_device *net_device;
-
- net_device = device->ext;
- if (net_device && atomic_read(&net_device->refcnt) > 1)
- atomic_inc(&net_device->refcnt);
- else
- net_device = NULL;
-
- return net_device;
-}
-
-/* Get the net device object iff exists and its refcount > 0 */
-static struct netvsc_device *get_inbound_net_device(struct hv_device *device)
-{
- struct netvsc_device *net_device;
-
- net_device = device->ext;
- if (net_device && atomic_read(&net_device->refcnt))
- atomic_inc(&net_device->refcnt);
- else
- net_device = NULL;
-
- return net_device;
-}
-
-static void put_net_device(struct hv_device *device)
-{
- struct netvsc_device *net_device;
-
- net_device = device->ext;
-
- atomic_dec(&net_device->refcnt);
-}
-
-static struct netvsc_device *release_outbound_net_device(
- struct hv_device *device)
-{
- struct netvsc_device *net_device;
-
- net_device = device->ext;
- if (net_device == NULL)
- return NULL;
-
- /* Busy wait until the ref drop to 2, then set it to 1 */
- while (atomic_cmpxchg(&net_device->refcnt, 2, 1) != 2)
- udelay(100);
-
- return net_device;
-}
-
-static struct netvsc_device *release_inbound_net_device(
- struct hv_device *device)
-{
- struct netvsc_device *net_device;
-
- net_device = device->ext;
- if (net_device == NULL)
- return NULL;
-
- /* Busy wait until the ref drop to 1, then set it to 0 */
- while (atomic_cmpxchg(&net_device->refcnt, 1, 0) != 1)
- udelay(100);
-
- device->ext = NULL;
- return net_device;
-}
-
-static int netvsc_destroy_recv_buf(struct netvsc_device *net_device)
-{
- struct nvsp_message *revoke_packet;
- int ret = 0;
-
- /*
- * If we got a section count, it means we received a
- * SendReceiveBufferComplete msg (ie sent
- * NvspMessage1TypeSendReceiveBuffer msg) therefore, we need
- * to send a revoke msg here
- */
- if (net_device->recv_section_cnt) {
- /* Send the revoke receive buffer */
- revoke_packet = &net_device->revoke_packet;
- memset(revoke_packet, 0, sizeof(struct nvsp_message));
-
- revoke_packet->hdr.msg_type =
- NVSP_MSG1_TYPE_REVOKE_RECV_BUF;
- revoke_packet->msg.v1_msg.
- revoke_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID;
-
- ret = vmbus_sendpacket(net_device->dev->channel,
- revoke_packet,
- sizeof(struct nvsp_message),
- (unsigned long)revoke_packet,
- VM_PKT_DATA_INBAND, 0);
- /*
- * If we failed here, we might as well return and
- * have a leak rather than continue and a bugchk
- */
- if (ret != 0) {
- dev_err(&net_device->dev->device, "unable to send "
- "revoke receive buffer to netvsp");
- return -1;
- }
- }
-
- /* Teardown the gpadl on the vsp end */
- if (net_device->recv_buf_gpadl_handle) {
- ret = vmbus_teardown_gpadl(net_device->dev->channel,
- net_device->recv_buf_gpadl_handle);
-
- /* If we failed here, we might as well return and have a leak
- * rather than continue and a bugchk
- */
- if (ret != 0) {
- dev_err(&net_device->dev->device,
- "unable to teardown receive buffer's gpadl");
- return -1;
- }
- net_device->recv_buf_gpadl_handle = 0;
- }
-
- if (net_device->recv_buf) {
- /* Free up the receive buffer */
- free_pages((unsigned long)net_device->recv_buf,
- get_order(net_device->recv_buf_size));
- net_device->recv_buf = NULL;
- }
-
- if (net_device->recv_section) {
- net_device->recv_section_cnt = 0;
- kfree(net_device->recv_section);
- net_device->recv_section = NULL;
- }
-
- return ret;
-}
-
-static int netvsc_init_recv_buf(struct hv_device *device)
-{
- int ret = 0;
- int t;
- struct netvsc_device *net_device;
- struct nvsp_message *init_packet;
-
- net_device = get_outbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "unable to get net device..."
- "device being destroyed?");
- return -1;
- }
-
- net_device->recv_buf =
- (void *)__get_free_pages(GFP_KERNEL|__GFP_ZERO,
- get_order(net_device->recv_buf_size));
- if (!net_device->recv_buf) {
- dev_err(&device->device, "unable to allocate receive "
- "buffer of size %d", net_device->recv_buf_size);
- ret = -1;
- goto cleanup;
- }
-
- /*
- * Establish the gpadl handle for this buffer on this
- * channel. Note: This call uses the vmbus connection rather
- * than the channel to establish the gpadl handle.
- */
- ret = vmbus_establish_gpadl(device->channel, net_device->recv_buf,
- net_device->recv_buf_size,
- &net_device->recv_buf_gpadl_handle);
- if (ret != 0) {
- dev_err(&device->device,
- "unable to establish receive buffer's gpadl");
- goto cleanup;
- }
-
-
- /* Notify the NetVsp of the gpadl handle */
- init_packet = &net_device->channel_init_pkt;
-
- memset(init_packet, 0, sizeof(struct nvsp_message));
-
- init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_RECV_BUF;
- init_packet->msg.v1_msg.send_recv_buf.
- gpadl_handle = net_device->recv_buf_gpadl_handle;
- init_packet->msg.v1_msg.
- send_recv_buf.id = NETVSC_RECEIVE_BUFFER_ID;
-
- /* Send the gpadl notification request */
- ret = vmbus_sendpacket(device->channel, init_packet,
- sizeof(struct nvsp_message),
- (unsigned long)init_packet,
- VM_PKT_DATA_INBAND,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
- if (ret != 0) {
- dev_err(&device->device,
- "unable to send receive buffer's gpadl to netvsp");
- goto cleanup;
- }
-
- t = wait_for_completion_timeout(&net_device->channel_init_wait, HZ);
- BUG_ON(t == 0);
-
-
- /* Check the response */
- if (init_packet->msg.v1_msg.
- send_recv_buf_complete.status != NVSP_STAT_SUCCESS) {
- dev_err(&device->device, "Unable to complete receive buffer "
- "initialzation with NetVsp - status %d",
- init_packet->msg.v1_msg.
- send_recv_buf_complete.status);
- ret = -1;
- goto cleanup;
- }
-
- /* Parse the response */
-
- net_device->recv_section_cnt = init_packet->msg.
- v1_msg.send_recv_buf_complete.num_sections;
-
- net_device->recv_section = kmalloc(net_device->recv_section_cnt
- * sizeof(struct nvsp_1_receive_buffer_section), GFP_KERNEL);
- if (net_device->recv_section == NULL) {
- ret = -1;
- goto cleanup;
- }
-
- memcpy(net_device->recv_section,
- init_packet->msg.v1_msg.
- send_recv_buf_complete.sections,
- net_device->recv_section_cnt *
- sizeof(struct nvsp_1_receive_buffer_section));
-
- /*
- * For 1st release, there should only be 1 section that represents the
- * entire receive buffer
- */
- if (net_device->recv_section_cnt != 1 ||
- net_device->recv_section->offset != 0) {
- ret = -1;
- goto cleanup;
- }
-
- goto exit;
-
-cleanup:
- netvsc_destroy_recv_buf(net_device);
-
-exit:
- put_net_device(device);
- return ret;
-}
-
-
-static int netvsc_connect_vsp(struct hv_device *device)
-{
- int ret, t;
- struct netvsc_device *net_device;
- struct nvsp_message *init_packet;
- int ndis_version;
-
- net_device = get_outbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "unable to get net device..."
- "device being destroyed?");
- return -1;
- }
-
- init_packet = &net_device->channel_init_pkt;
-
- memset(init_packet, 0, sizeof(struct nvsp_message));
- init_packet->hdr.msg_type = NVSP_MSG_TYPE_INIT;
- init_packet->msg.init_msg.init.min_protocol_ver =
- NVSP_MIN_PROTOCOL_VERSION;
- init_packet->msg.init_msg.init.max_protocol_ver =
- NVSP_MAX_PROTOCOL_VERSION;
-
- /* Send the init request */
- ret = vmbus_sendpacket(device->channel, init_packet,
- sizeof(struct nvsp_message),
- (unsigned long)init_packet,
- VM_PKT_DATA_INBAND,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
-
- if (ret != 0)
- goto cleanup;
-
- t = wait_for_completion_timeout(&net_device->channel_init_wait, HZ);
-
- if (t == 0) {
- ret = -ETIMEDOUT;
- goto cleanup;
- }
-
- if (init_packet->msg.init_msg.init_complete.status !=
- NVSP_STAT_SUCCESS) {
- ret = -1;
- goto cleanup;
- }
-
- if (init_packet->msg.init_msg.init_complete.
- negotiated_protocol_ver != NVSP_PROTOCOL_VERSION_1) {
- ret = -1;
- goto cleanup;
- }
- /* Send the ndis version */
- memset(init_packet, 0, sizeof(struct nvsp_message));
-
- ndis_version = 0x00050000;
-
- init_packet->hdr.msg_type = NVSP_MSG1_TYPE_SEND_NDIS_VER;
- init_packet->msg.v1_msg.
- send_ndis_ver.ndis_major_ver =
- (ndis_version & 0xFFFF0000) >> 16;
- init_packet->msg.v1_msg.
- send_ndis_ver.ndis_minor_ver =
- ndis_version & 0xFFFF;
-
- /* Send the init request */
- ret = vmbus_sendpacket(device->channel, init_packet,
- sizeof(struct nvsp_message),
- (unsigned long)init_packet,
- VM_PKT_DATA_INBAND, 0);
- if (ret != 0) {
- ret = -1;
- goto cleanup;
- }
-
- /* Post the big receive buffer to NetVSP */
- ret = netvsc_init_recv_buf(device);
-
-cleanup:
- put_net_device(device);
- return ret;
-}
-
-static void netvsc_disconnect_vsp(struct netvsc_device *net_device)
-{
- netvsc_destroy_recv_buf(net_device);
-}
-
-/*
- * netvsc_device_remove - Callback when the root bus device is removed
- */
-int netvsc_device_remove(struct hv_device *device)
-{
- struct netvsc_device *net_device;
- struct hv_netvsc_packet *netvsc_packet, *pos;
-
- /* Stop outbound traffic ie sends and receives completions */
- net_device = release_outbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "No net device present!!");
- return -1;
- }
-
- /* Wait for all send completions */
- while (atomic_read(&net_device->num_outstanding_sends)) {
- dev_err(&device->device,
- "waiting for %d requests to complete...",
- atomic_read(&net_device->num_outstanding_sends));
- udelay(100);
- }
-
- netvsc_disconnect_vsp(net_device);
-
- /* Stop inbound traffic ie receives and sends completions */
- net_device = release_inbound_net_device(device);
-
- /* At this point, no one should be accessing netDevice except in here */
- dev_notice(&device->device, "net device safe to remove");
-
- /* Now, we can close the channel safely */
- vmbus_close(device->channel);
-
- /* Release all resources */
- list_for_each_entry_safe(netvsc_packet, pos,
- &net_device->recv_pkt_list, list_ent) {
- list_del(&netvsc_packet->list_ent);
- kfree(netvsc_packet);
- }
-
- free_net_device(net_device);
- return 0;
-}
-
-static void netvsc_send_completion(struct hv_device *device,
- struct vmpacket_descriptor *packet)
-{
- struct netvsc_device *net_device;
- struct nvsp_message *nvsp_packet;
- struct hv_netvsc_packet *nvsc_packet;
-
- net_device = get_inbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "unable to get net device..."
- "device being destroyed?");
- return;
- }
-
- nvsp_packet = (struct nvsp_message *)((unsigned long)packet +
- (packet->offset8 << 3));
-
- if ((nvsp_packet->hdr.msg_type == NVSP_MSG_TYPE_INIT_COMPLETE) ||
- (nvsp_packet->hdr.msg_type ==
- NVSP_MSG1_TYPE_SEND_RECV_BUF_COMPLETE) ||
- (nvsp_packet->hdr.msg_type ==
- NVSP_MSG1_TYPE_SEND_SEND_BUF_COMPLETE)) {
- /* Copy the response back */
- memcpy(&net_device->channel_init_pkt, nvsp_packet,
- sizeof(struct nvsp_message));
- complete(&net_device->channel_init_wait);
- } else if (nvsp_packet->hdr.msg_type ==
- NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE) {
- /* Get the send context */
- nvsc_packet = (struct hv_netvsc_packet *)(unsigned long)
- packet->trans_id;
-
- /* Notify the layer above us */
- nvsc_packet->completion.send.send_completion(
- nvsc_packet->completion.send.send_completion_ctx);
-
- atomic_dec(&net_device->num_outstanding_sends);
- } else {
- dev_err(&device->device, "Unknown send completion packet type- "
- "%d received!!", nvsp_packet->hdr.msg_type);
- }
-
- put_net_device(device);
-}
-
-int netvsc_send(struct hv_device *device,
- struct hv_netvsc_packet *packet)
-{
- struct netvsc_device *net_device;
- int ret = 0;
-
- struct nvsp_message sendMessage;
-
- net_device = get_outbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "net device (%p) shutting down..."
- "ignoring outbound packets", net_device);
- return -2;
- }
-
- sendMessage.hdr.msg_type = NVSP_MSG1_TYPE_SEND_RNDIS_PKT;
- if (packet->is_data_pkt) {
- /* 0 is RMC_DATA; */
- sendMessage.msg.v1_msg.send_rndis_pkt.channel_type = 0;
- } else {
- /* 1 is RMC_CONTROL; */
- sendMessage.msg.v1_msg.send_rndis_pkt.channel_type = 1;
- }
-
- /* Not using send buffer section */
- sendMessage.msg.v1_msg.send_rndis_pkt.send_buf_section_index =
- 0xFFFFFFFF;
- sendMessage.msg.v1_msg.send_rndis_pkt.send_buf_section_size = 0;
-
- if (packet->page_buf_cnt) {
- ret = vmbus_sendpacket_pagebuffer(device->channel,
- packet->page_buf,
- packet->page_buf_cnt,
- &sendMessage,
- sizeof(struct nvsp_message),
- (unsigned long)packet);
- } else {
- ret = vmbus_sendpacket(device->channel, &sendMessage,
- sizeof(struct nvsp_message),
- (unsigned long)packet,
- VM_PKT_DATA_INBAND,
- VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
-
- }
-
- if (ret != 0)
- dev_err(&device->device, "Unable to send packet %p ret %d",
- packet, ret);
-
- atomic_inc(&net_device->num_outstanding_sends);
- put_net_device(device);
- return ret;
-}
-
-static void netvsc_send_recv_completion(struct hv_device *device,
- u64 transaction_id)
-{
- struct nvsp_message recvcompMessage;
- int retries = 0;
- int ret;
-
- recvcompMessage.hdr.msg_type =
- NVSP_MSG1_TYPE_SEND_RNDIS_PKT_COMPLETE;
-
- /* FIXME: Pass in the status */
- recvcompMessage.msg.v1_msg.send_rndis_pkt_complete.status =
- NVSP_STAT_SUCCESS;
-
-retry_send_cmplt:
- /* Send the completion */
- ret = vmbus_sendpacket(device->channel, &recvcompMessage,
- sizeof(struct nvsp_message), transaction_id,
- VM_PKT_COMP, 0);
- if (ret == 0) {
- /* success */
- /* no-op */
- } else if (ret == -1) {
- /* no more room...wait a bit and attempt to retry 3 times */
- retries++;
- dev_err(&device->device, "unable to send receive completion pkt"
- " (tid %llx)...retrying %d", transaction_id, retries);
-
- if (retries < 4) {
- udelay(100);
- goto retry_send_cmplt;
- } else {
- dev_err(&device->device, "unable to send receive "
- "completion pkt (tid %llx)...give up retrying",
- transaction_id);
- }
- } else {
- dev_err(&device->device, "unable to send receive "
- "completion pkt - %llx", transaction_id);
- }
-}
-
-/* Send a receive completion packet to RNDIS device (ie NetVsp) */
-static void netvsc_receive_completion(void *context)
-{
- struct hv_netvsc_packet *packet = context;
- struct hv_device *device = (struct hv_device *)packet->device;
- struct netvsc_device *net_device;
- u64 transaction_id = 0;
- bool fsend_receive_comp = false;
- unsigned long flags;
-
- /*
- * Even though it seems logical to do a GetOutboundNetDevice() here to
- * send out receive completion, we are using GetInboundNetDevice()
- * since we may have disable outbound traffic already.
- */
- net_device = get_inbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "unable to get net device..."
- "device being destroyed?");
- return;
- }
-
- /* Overloading use of the lock. */
- spin_lock_irqsave(&net_device->recv_pkt_list_lock, flags);
-
- packet->xfer_page_pkt->count--;
-
- /*
- * Last one in the line that represent 1 xfer page packet.
- * Return the xfer page packet itself to the freelist
- */
- if (packet->xfer_page_pkt->count == 0) {
- fsend_receive_comp = true;
- transaction_id = packet->completion.recv.recv_completion_tid;
- list_add_tail(&packet->xfer_page_pkt->list_ent,
- &net_device->recv_pkt_list);
-
- }
-
- /* Put the packet back */
- list_add_tail(&packet->list_ent, &net_device->recv_pkt_list);
- spin_unlock_irqrestore(&net_device->recv_pkt_list_lock, flags);
-
- /* Send a receive completion for the xfer page packet */
- if (fsend_receive_comp)
- netvsc_send_recv_completion(device, transaction_id);
-
- put_net_device(device);
-}
-
-static void netvsc_receive(struct hv_device *device,
- struct vmpacket_descriptor *packet)
-{
- struct netvsc_device *net_device;
- struct vmtransfer_page_packet_header *vmxferpage_packet;
- struct nvsp_message *nvsp_packet;
- struct hv_netvsc_packet *netvsc_packet = NULL;
- unsigned long start;
- unsigned long end, end_virtual;
- /* struct netvsc_driver *netvscDriver; */
- struct xferpage_packet *xferpage_packet = NULL;
- int i, j;
- int count = 0, bytes_remain = 0;
- unsigned long flags;
-
- LIST_HEAD(listHead);
-
- net_device = get_inbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "unable to get net device..."
- "device being destroyed?");
- return;
- }
-
- /*
- * All inbound packets other than send completion should be xfer page
- * packet
- */
- if (packet->type != VM_PKT_DATA_USING_XFER_PAGES) {
- dev_err(&device->device, "Unknown packet type received - %d",
- packet->type);
- put_net_device(device);
- return;
- }
-
- nvsp_packet = (struct nvsp_message *)((unsigned long)packet +
- (packet->offset8 << 3));
-
- /* Make sure this is a valid nvsp packet */
- if (nvsp_packet->hdr.msg_type !=
- NVSP_MSG1_TYPE_SEND_RNDIS_PKT) {
- dev_err(&device->device, "Unknown nvsp packet type received-"
- " %d", nvsp_packet->hdr.msg_type);
- put_net_device(device);
- return;
- }
-
- vmxferpage_packet = (struct vmtransfer_page_packet_header *)packet;
-
- if (vmxferpage_packet->xfer_pageset_id != NETVSC_RECEIVE_BUFFER_ID) {
- dev_err(&device->device, "Invalid xfer page set id - "
- "expecting %x got %x", NETVSC_RECEIVE_BUFFER_ID,
- vmxferpage_packet->xfer_pageset_id);
- put_net_device(device);
- return;
- }
-
- /*
- * Grab free packets (range count + 1) to represent this xfer
- * page packet. +1 to represent the xfer page packet itself.
- * We grab it here so that we know exactly how many we can
- * fulfil
- */
- spin_lock_irqsave(&net_device->recv_pkt_list_lock, flags);
- while (!list_empty(&net_device->recv_pkt_list)) {
- list_move_tail(net_device->recv_pkt_list.next, &listHead);
- if (++count == vmxferpage_packet->range_cnt + 1)
- break;
- }
- spin_unlock_irqrestore(&net_device->recv_pkt_list_lock, flags);
-
- /*
- * We need at least 2 netvsc pkts (1 to represent the xfer
- * page and at least 1 for the range) i.e. we can handled
- * some of the xfer page packet ranges...
- */
- if (count < 2) {
- dev_err(&device->device, "Got only %d netvsc pkt...needed "
- "%d pkts. Dropping this xfer page packet completely!",
- count, vmxferpage_packet->range_cnt + 1);
-
- /* Return it to the freelist */
- spin_lock_irqsave(&net_device->recv_pkt_list_lock, flags);
- for (i = count; i != 0; i--) {
- list_move_tail(listHead.next,
- &net_device->recv_pkt_list);
- }
- spin_unlock_irqrestore(&net_device->recv_pkt_list_lock,
- flags);
-
- netvsc_send_recv_completion(device,
- vmxferpage_packet->d.trans_id);
-
- put_net_device(device);
- return;
- }
-
- /* Remove the 1st packet to represent the xfer page packet itself */
- xferpage_packet = (struct xferpage_packet *)listHead.next;
- list_del(&xferpage_packet->list_ent);
-
- /* This is how much we can satisfy */
- xferpage_packet->count = count - 1;
-
- if (xferpage_packet->count != vmxferpage_packet->range_cnt) {
- dev_err(&device->device, "Needed %d netvsc pkts to satisy "
- "this xfer page...got %d",
- vmxferpage_packet->range_cnt, xferpage_packet->count);
- }
-
- /* Each range represents 1 RNDIS pkt that contains 1 ethernet frame */
- for (i = 0; i < (count - 1); i++) {
- netvsc_packet = (struct hv_netvsc_packet *)listHead.next;
- list_del(&netvsc_packet->list_ent);
-
- /* Initialize the netvsc packet */
- netvsc_packet->xfer_page_pkt = xferpage_packet;
- netvsc_packet->completion.recv.recv_completion =
- netvsc_receive_completion;
- netvsc_packet->completion.recv.recv_completion_ctx =
- netvsc_packet;
- netvsc_packet->device = device;
- /* Save this so that we can send it back */
- netvsc_packet->completion.recv.recv_completion_tid =
- vmxferpage_packet->d.trans_id;
-
- netvsc_packet->total_data_buflen =
- vmxferpage_packet->ranges[i].byte_count;
- netvsc_packet->page_buf_cnt = 1;
-
- netvsc_packet->page_buf[0].len =
- vmxferpage_packet->ranges[i].byte_count;
-
- start = virt_to_phys((void *)((unsigned long)net_device->
- recv_buf + vmxferpage_packet->ranges[i].byte_offset));
-
- netvsc_packet->page_buf[0].pfn = start >> PAGE_SHIFT;
- end_virtual = (unsigned long)net_device->recv_buf
- + vmxferpage_packet->ranges[i].byte_offset
- + vmxferpage_packet->ranges[i].byte_count - 1;
- end = virt_to_phys((void *)end_virtual);
-
- /* Calculate the page relative offset */
- netvsc_packet->page_buf[0].offset =
- vmxferpage_packet->ranges[i].byte_offset &
- (PAGE_SIZE - 1);
- if ((end >> PAGE_SHIFT) != (start >> PAGE_SHIFT)) {
- /* Handle frame across multiple pages: */
- netvsc_packet->page_buf[0].len =
- (netvsc_packet->page_buf[0].pfn <<
- PAGE_SHIFT)
- + PAGE_SIZE - start;
- bytes_remain = netvsc_packet->total_data_buflen -
- netvsc_packet->page_buf[0].len;
- for (j = 1; j < NETVSC_PACKET_MAXPAGE; j++) {
- netvsc_packet->page_buf[j].offset = 0;
- if (bytes_remain <= PAGE_SIZE) {
- netvsc_packet->page_buf[j].len =
- bytes_remain;
- bytes_remain = 0;
- } else {
- netvsc_packet->page_buf[j].len =
- PAGE_SIZE;
- bytes_remain -= PAGE_SIZE;
- }
- netvsc_packet->page_buf[j].pfn =
- virt_to_phys((void *)(end_virtual -
- bytes_remain)) >> PAGE_SHIFT;
- netvsc_packet->page_buf_cnt++;
- if (bytes_remain == 0)
- break;
- }
- }
-
- /* Pass it to the upper layer */
- rndis_filter_receive(device, netvsc_packet);
-
- netvsc_receive_completion(netvsc_packet->
- completion.recv.recv_completion_ctx);
- }
-
- put_net_device(device);
-}
-
-static void netvsc_channel_cb(void *context)
-{
- int ret;
- struct hv_device *device = context;
- struct netvsc_device *net_device;
- u32 bytes_recvd;
- u64 request_id;
- unsigned char *packet;
- struct vmpacket_descriptor *desc;
- unsigned char *buffer;
- int bufferlen = NETVSC_PACKET_SIZE;
-
- packet = kzalloc(NETVSC_PACKET_SIZE * sizeof(unsigned char),
- GFP_ATOMIC);
- if (!packet)
- return;
- buffer = packet;
-
- net_device = get_inbound_net_device(device);
- if (!net_device) {
- dev_err(&device->device, "net device (%p) shutting down..."
- "ignoring inbound packets", net_device);
- goto out;
- }
-
- do {
- ret = vmbus_recvpacket_raw(device->channel, buffer, bufferlen,
- &bytes_recvd, &request_id);
- if (ret == 0) {
- if (bytes_recvd > 0) {
- desc = (struct vmpacket_descriptor *)buffer;
- switch (desc->type) {
- case VM_PKT_COMP:
- netvsc_send_completion(device, desc);
- break;
-
- case VM_PKT_DATA_USING_XFER_PAGES:
- netvsc_receive(device, desc);
- break;
-
- default:
- dev_err(&device->device,
- "unhandled packet type %d, "
- "tid %llx len %d\n",
- desc->type, request_id,
- bytes_recvd);
- break;
- }
-
- /* reset */
- if (bufferlen > NETVSC_PACKET_SIZE) {
- kfree(buffer);
- buffer = packet;
- bufferlen = NETVSC_PACKET_SIZE;
- }
- } else {
- /* reset */
- if (bufferlen > NETVSC_PACKET_SIZE) {
- kfree(buffer);
- buffer = packet;
- bufferlen = NETVSC_PACKET_SIZE;
- }
-
- break;
- }
- } else if (ret == -2) {
- /* Handle large packet */
- buffer = kmalloc(bytes_recvd, GFP_ATOMIC);
- if (buffer == NULL) {
- /* Try again next time around */
- dev_err(&device->device,
- "unable to allocate buffer of size "
- "(%d)!!", bytes_recvd);
- break;
- }
-
- bufferlen = bytes_recvd;
- }
- } while (1);
-
- put_net_device(device);
-out:
- kfree(buffer);
- return;
-}
-
-/*
- * netvsc_device_add - Callback when the device belonging to this
- * driver is added
- */
-int netvsc_device_add(struct hv_device *device, void *additional_info)
-{
- int ret = 0;
- int i;
- int ring_size =
- ((struct netvsc_device_info *)additional_info)->ring_size;
- struct netvsc_device *net_device;
- struct hv_netvsc_packet *packet, *pos;
-
- net_device = alloc_net_device(device);
- if (!net_device) {
- ret = -1;
- goto cleanup;
- }
-
- /* Initialize the NetVSC channel extension */
- net_device->recv_buf_size = NETVSC_RECEIVE_BUFFER_SIZE;
- spin_lock_init(&net_device->recv_pkt_list_lock);
-
- INIT_LIST_HEAD(&net_device->recv_pkt_list);
-
- for (i = 0; i < NETVSC_RECEIVE_PACKETLIST_COUNT; i++) {
- packet = kzalloc(sizeof(struct hv_netvsc_packet) +
- (NETVSC_RECEIVE_SG_COUNT *
- sizeof(struct hv_page_buffer)), GFP_KERNEL);
- if (!packet)
- break;
-
- list_add_tail(&packet->list_ent,
- &net_device->recv_pkt_list);
- }
- init_completion(&net_device->channel_init_wait);
-
- /* Open the channel */
- ret = vmbus_open(device->channel, ring_size * PAGE_SIZE,
- ring_size * PAGE_SIZE, NULL, 0,
- netvsc_channel_cb, device);
-
- if (ret != 0) {
- dev_err(&device->device, "unable to open channel: %d", ret);
- ret = -1;
- goto cleanup;
- }
-
- /* Channel is opened */
- pr_info("hv_netvsc channel opened successfully");
-
- /* Connect with the NetVsp */
- ret = netvsc_connect_vsp(device);
- if (ret != 0) {
- dev_err(&device->device,
- "unable to connect to NetVSP - %d", ret);
- ret = -1;
- goto close;
- }
-
- return ret;
-
-close:
- /* Now, we can close the channel safely */
- vmbus_close(device->channel);
-
-cleanup:
-
- if (net_device) {
- list_for_each_entry_safe(packet, pos,
- &net_device->recv_pkt_list,
- list_ent) {
- list_del(&packet->list_ent);
- kfree(packet);
- }
-
- release_outbound_net_device(device);
- release_inbound_net_device(device);
-
- free_net_device(net_device);
- }
-
- return ret;
-}
-
-/*
- * netvsc_initialize - Main entry point
- */
-int netvsc_initialize(struct hv_driver *drv)
-{
-
- drv->name = driver_name;
- memcpy(&drv->dev_type, &netvsc_device_type, sizeof(struct hv_guid));
-
- return 0;
-}
deleted file mode 100644
@@ -1,474 +0,0 @@
-/*
- * Copyright (c) 2009, Microsoft Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Authors:
- * Haiyang Zhang <haiyangz@microsoft.com>
- * Hank Janssen <hjanssen@microsoft.com>
- */
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/highmem.h>
-#include <linux/device.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/inetdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/in.h>
-#include <linux/slab.h>
-#include <linux/dmi.h>
-#include <linux/pci.h>
-#include <net/arp.h>
-#include <net/route.h>
-#include <net/sock.h>
-#include <net/pkt_sched.h>
-
-#include "hyperv.h"
-#include "hyperv_net.h"
-
-struct net_device_context {
- /* point back to our device context */
- struct hv_device *device_ctx;
- unsigned long avail;
- struct delayed_work dwork;
-};
-
-
-#define PACKET_PAGES_LOWATER 8
-/* Need this many pages to handle worst case fragmented packet */
-#define PACKET_PAGES_HIWATER (MAX_SKB_FRAGS + 2)
-
-static int ring_size = 128;
-module_param(ring_size, int, S_IRUGO);
-MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)");
-
-/* no-op so the netdev core doesn't return -EINVAL when modifying the the
- * multicast address list in SIOCADDMULTI. hv is setup to get all multicast
- * when it calls RndisFilterOnOpen() */
-static void netvsc_set_multicast_list(struct net_device *net)
-{
-}
-
-static int netvsc_open(struct net_device *net)
-{
- struct net_device_context *net_device_ctx = netdev_priv(net);
- struct hv_device *device_obj = net_device_ctx->device_ctx;
- int ret = 0;
-
- if (netif_carrier_ok(net)) {
- /* Open up the device */
- ret = rndis_filter_open(device_obj);
- if (ret != 0) {
- netdev_err(net, "unable to open device (ret %d).\n",
- ret);
- return ret;
- }
-
- netif_start_queue(net);
- } else {
- netdev_err(net, "unable to open device...link is down.\n");
- }
-
- return ret;
-}
-
-static int netvsc_close(struct net_device *net)
-{
- struct net_device_context *net_device_ctx = netdev_priv(net);
- struct hv_device *device_obj = net_device_ctx->device_ctx;
- int ret;
-
- netif_stop_queue(net);
-
- ret = rndis_filter_close(device_obj);
- if (ret != 0)
- netdev_err(net, "unable to close device (ret %d).\n", ret);
-
- return ret;
-}
-
-static void netvsc_xmit_completion(void *context)
-{
- struct hv_netvsc_packet *packet = (struct hv_netvsc_packet *)context;
- struct sk_buff *skb = (struct sk_buff *)
- (unsigned long)packet->completion.send.send_completion_tid;
-
- kfree(packet);
-
- if (skb) {
- struct net_device *net = skb->dev;
- struct net_device_context *net_device_ctx = netdev_priv(net);
- unsigned int num_pages = skb_shinfo(skb)->nr_frags + 2;
-
- dev_kfree_skb_any(skb);
-
- net_device_ctx->avail += num_pages;
- if (net_device_ctx->avail >= PACKET_PAGES_HIWATER)
- netif_wake_queue(net);
- }
-}
-
-static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
-{
- struct net_device_context *net_device_ctx = netdev_priv(net);
- struct hv_netvsc_packet *packet;
- int ret;
- unsigned int i, num_pages;
-
- /* Add 1 for skb->data and additional one for RNDIS */
- num_pages = skb_shinfo(skb)->nr_frags + 1 + 1;
- if (num_pages > net_device_ctx->avail)
- return NETDEV_TX_BUSY;
-
- /* Allocate a netvsc packet based on # of frags. */
- packet = kzalloc(sizeof(struct hv_netvsc_packet) +
- (num_pages * sizeof(struct hv_page_buffer)) +
- sizeof(struct rndis_filter_packet), GFP_ATOMIC);
- if (!packet) {
- /* out of memory, silently drop packet */
- netdev_err(net, "unable to allocate hv_netvsc_packet\n");
-
- dev_kfree_skb(skb);
- net->stats.tx_dropped++;
- return NETDEV_TX_OK;
- }
-
- packet->extension = (void *)(unsigned long)packet +
- sizeof(struct hv_netvsc_packet) +
- (num_pages * sizeof(struct hv_page_buffer));
-
- /* Setup the rndis header */
- packet->page_buf_cnt = num_pages;
-
- /* Initialize it from the skb */
- packet->total_data_buflen = skb->len;
-
- /* Start filling in the page buffers starting after RNDIS buffer. */
- packet->page_buf[1].pfn = virt_to_phys(skb->data) >> PAGE_SHIFT;
- packet->page_buf[1].offset
- = (unsigned long)skb->data & (PAGE_SIZE - 1);
- packet->page_buf[1].len = skb_headlen(skb);
-
- /* Additional fragments are after SKB data */
- for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
- skb_frag_t *f = &skb_shinfo(skb)->frags[i];
-
- packet->page_buf[i+2].pfn = page_to_pfn(f->page);
- packet->page_buf[i+2].offset = f->page_offset;
- packet->page_buf[i+2].len = f->size;
- }
-
- /* Set the completion routine */
- packet->completion.send.send_completion = netvsc_xmit_completion;
- packet->completion.send.send_completion_ctx = packet;
- packet->completion.send.send_completion_tid = (unsigned long)skb;
-
- ret = rndis_filter_send(net_device_ctx->device_ctx,
- packet);
- if (ret == 0) {
- net->stats.tx_bytes += skb->len;
- net->stats.tx_packets++;
-
- net_device_ctx->avail -= num_pages;
- if (net_device_ctx->avail < PACKET_PAGES_LOWATER)
- netif_stop_queue(net);
- } else {
- /* we are shutting down or bus overloaded, just drop packet */
- net->stats.tx_dropped++;
- netvsc_xmit_completion(packet);
- }
-
- return NETDEV_TX_OK;
-}
-
-/*
- * netvsc_linkstatus_callback - Link up/down notification
- */
-void netvsc_linkstatus_callback(struct hv_device *device_obj,
- unsigned int status)
-{
- struct net_device *net = dev_get_drvdata(&device_obj->device);
- struct net_device_context *ndev_ctx;
-
- if (!net) {
- netdev_err(net, "got link status but net device "
- "not initialized yet\n");
- return;
- }
-
- if (status == 1) {
- netif_carrier_on(net);
- netif_wake_queue(net);
- netif_notify_peers(net);
- ndev_ctx = netdev_priv(net);
- schedule_delayed_work(&ndev_ctx->dwork, msecs_to_jiffies(20));
- } else {
- netif_carrier_off(net);
- netif_stop_queue(net);
- }
-}
-
-/*
- * netvsc_recv_callback - Callback when we receive a packet from the
- * "wire" on the specified device.
- */
-int netvsc_recv_callback(struct hv_device *device_obj,
- struct hv_netvsc_packet *packet)
-{
- struct net_device *net = dev_get_drvdata(&device_obj->device);
- struct sk_buff *skb;
- void *data;
- int i;
- unsigned long flags;
-
- if (!net) {
- netdev_err(net, "got receive callback but net device"
- " not initialized yet\n");
- return 0;
- }
-
- /* Allocate a skb - TODO direct I/O to pages? */
- skb = netdev_alloc_skb_ip_align(net, packet->total_data_buflen);
- if (unlikely(!skb)) {
- ++net->stats.rx_dropped;
- return 0;
- }
-
- /* for kmap_atomic */
- local_irq_save(flags);
-
- /*
- * Copy to skb. This copy is needed here since the memory pointed by
- * hv_netvsc_packet cannot be deallocated
- */
- for (i = 0; i < packet->page_buf_cnt; i++) {
- data = kmap_atomic(pfn_to_page(packet->page_buf[i].pfn),
- KM_IRQ1);
- data = (void *)(unsigned long)data +
- packet->page_buf[i].offset;
-
- memcpy(skb_put(skb, packet->page_buf[i].len), data,
- packet->page_buf[i].len);
-
- kunmap_atomic((void *)((unsigned long)data -
- packet->page_buf[i].offset), KM_IRQ1);
- }
-
- local_irq_restore(flags);
-
- skb->protocol = eth_type_trans(skb, net);
- skb->ip_summed = CHECKSUM_NONE;
-
- net->stats.rx_packets++;
- net->stats.rx_bytes += skb->len;
-
- /*
- * Pass the skb back up. Network stack will deallocate the skb when it
- * is done.
- * TODO - use NAPI?
- */
- netif_rx(skb);
-
- return 0;
-}
-
-static void netvsc_get_drvinfo(struct net_device *net,
- struct ethtool_drvinfo *info)
-{
- strcpy(info->driver, "hv_netvsc");
- strcpy(info->version, HV_DRV_VERSION);
- strcpy(info->fw_version, "N/A");
-}
-
-static const struct ethtool_ops ethtool_ops = {
- .get_drvinfo = netvsc_get_drvinfo,
- .get_link = ethtool_op_get_link,
-};
-
-static const struct net_device_ops device_ops = {
- .ndo_open = netvsc_open,
- .ndo_stop = netvsc_close,
- .ndo_start_xmit = netvsc_start_xmit,
- .ndo_set_multicast_list = netvsc_set_multicast_list,
- .ndo_change_mtu = eth_change_mtu,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_set_mac_address = eth_mac_addr,
-};
-
-/*
- * Send GARP packet to network peers after migrations.
- * After Quick Migration, the network is not immediately operational in the
- * current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, add
- * another netif_notify_peers() into a delayed work, otherwise GARP packet
- * will not be sent after quick migration, and cause network disconnection.
- */
-static void netvsc_send_garp(struct work_struct *w)
-{
- struct net_device_context *ndev_ctx;
- struct net_device *net;
-
- ndev_ctx = container_of(w, struct net_device_context, dwork.work);
- net = dev_get_drvdata(&ndev_ctx->device_ctx->device);
- netif_notify_peers(net);
-}
-
-
-static int netvsc_probe(struct hv_device *dev)
-{
- struct net_device *net = NULL;
- struct net_device_context *net_device_ctx;
- struct netvsc_device_info device_info;
- int ret;
-
- net = alloc_etherdev(sizeof(struct net_device_context));
- if (!net)
- return -1;
-
- /* Set initial state */
- netif_carrier_off(net);
-
- net_device_ctx = netdev_priv(net);
- net_device_ctx->device_ctx = dev;
- net_device_ctx->avail = ring_size;
- dev_set_drvdata(&dev->device, net);
- INIT_DELAYED_WORK(&net_device_ctx->dwork, netvsc_send_garp);
-
- /* Notify the netvsc driver of the new device */
- device_info.ring_size = ring_size;
- ret = rndis_filter_device_add(dev, &device_info);
- if (ret != 0) {
- free_netdev(net);
- dev_set_drvdata(&dev->device, NULL);
-
- netdev_err(net, "unable to add netvsc device (ret %d)\n", ret);
- return ret;
- }
-
- netif_carrier_on(net);
-
- memcpy(net->dev_addr, device_info.mac_adr, ETH_ALEN);
-
- net->netdev_ops = &device_ops;
-
- /* TODO: Add GSO and Checksum offload */
- net->hw_features = NETIF_F_SG;
- net->features = NETIF_F_SG;
-
- SET_ETHTOOL_OPS(net, ðtool_ops);
- SET_NETDEV_DEV(net, &dev->device);
-
- ret = register_netdev(net);
- if (ret != 0) {
- /* Remove the device and release the resource */
- rndis_filter_device_remove(dev);
- free_netdev(net);
- }
-
- return ret;
-}
-
-static int netvsc_remove(struct hv_device *dev)
-{
- struct net_device *net = dev_get_drvdata(&dev->device);
- struct net_device_context *ndev_ctx;
-
- if (net == NULL) {
- dev_err(&dev->device, "No net device to remove\n");
- return 0;
- }
-
- ndev_ctx = netdev_priv(net);
- cancel_delayed_work_sync(&ndev_ctx->dwork);
-
- /* Stop outbound asap */
- netif_stop_queue(net);
-
- unregister_netdev(net);
-
- /*
- * Call to the vsc driver to let it know that the device is being
- * removed
- */
- rndis_filter_device_remove(dev);
-
- free_netdev(net);
- return 0;
-}
-
-/* The one and only one */
-static struct hv_driver netvsc_drv = {
- .probe = netvsc_probe,
- .remove = netvsc_remove,
-};
-
-static void __exit netvsc_drv_exit(void)
-{
- vmbus_child_driver_unregister(&netvsc_drv.driver);
-}
-
-
-static const struct dmi_system_id __initconst
-hv_netvsc_dmi_table[] __maybe_unused = {
- {
- .ident = "Hyper-V",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
- DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
- DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"),
- },
- },
- { },
-};
-MODULE_DEVICE_TABLE(dmi, hv_netvsc_dmi_table);
-
-static int __init netvsc_drv_init(void)
-{
- struct hv_driver *drv = &netvsc_drv;
- int ret;
-
- pr_info("initializing....");
-
- if (!dmi_check_system(hv_netvsc_dmi_table))
- return -ENODEV;
-
-
- /* Callback to client driver to complete the initialization */
- netvsc_initialize(drv);
-
- drv->driver.name = drv->name;
-
- /* The driver belongs to vmbus */
- ret = vmbus_child_driver_register(&drv->driver);
-
- return ret;
-}
-
-static const struct pci_device_id __initconst
-hv_netvsc_pci_table[] __maybe_unused = {
- { PCI_DEVICE(0x1414, 0x5353) }, /* VGA compatible controller */
- { 0 }
-};
-MODULE_DEVICE_TABLE(pci, hv_netvsc_pci_table);
-
-MODULE_LICENSE("GPL");
-MODULE_VERSION(HV_DRV_VERSION);
-MODULE_DESCRIPTION("Microsoft Hyper-V network driver");
-
-module_init(netvsc_drv_init);
-module_exit(netvsc_drv_exit);
deleted file mode 100644
@@ -1,831 +0,0 @@
-/*
- * Copyright (c) 2009, Microsoft Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Authors:
- * Haiyang Zhang <haiyangz@microsoft.com>
- * Hank Janssen <hjanssen@microsoft.com>
- */
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/wait.h>
-#include <linux/highmem.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/if_ether.h>
-#include <linux/netdevice.h>
-
-#include "hyperv.h"
-#include "hyperv_net.h"
-
-
-enum rndis_device_state {
- RNDIS_DEV_UNINITIALIZED = 0,
- RNDIS_DEV_INITIALIZING,
- RNDIS_DEV_INITIALIZED,
- RNDIS_DEV_DATAINITIALIZED,
-};
-
-struct rndis_device {
- struct netvsc_device *net_dev;
-
- enum rndis_device_state state;
- u32 link_stat;
- atomic_t new_req_id;
-
- spinlock_t request_lock;
- struct list_head req_list;
-
- unsigned char hw_mac_adr[ETH_ALEN];
-};
-
-struct rndis_request {
- struct list_head list_ent;
- struct completion wait_event;
-
- /*
- * FIXME: We assumed a fixed size response here. If we do ever need to
- * handle a bigger response, we can either define a max response
- * message or add a response buffer variable above this field
- */
- struct rndis_message response_msg;
-
- /* Simplify allocation by having a netvsc packet inline */
- struct hv_netvsc_packet pkt;
- struct hv_page_buffer buf;
- /* FIXME: We assumed a fixed size request here. */
- struct rndis_message request_msg;
-};
-
-static void rndis_filter_send_completion(void *ctx);
-
-static void rndis_filter_send_request_completion(void *ctx);
-
-
-
-static struct rndis_device *get_rndis_device(void)
-{
- struct rndis_device *device;
-
- device = kzalloc(sizeof(struct rndis_device), GFP_KERNEL);
- if (!device)
- return NULL;
-
- spin_lock_init(&device->request_lock);
-
- INIT_LIST_HEAD(&device->req_list);
-
- device->state = RNDIS_DEV_UNINITIALIZED;
-
- return device;
-}
-
-static struct rndis_request *get_rndis_request(struct rndis_device *dev,
- u32 msg_type,
- u32 msg_len)
-{
- struct rndis_request *request;
- struct rndis_message *rndis_msg;
- struct rndis_set_request *set;
- unsigned long flags;
-
- request = kzalloc(sizeof(struct rndis_request), GFP_KERNEL);
- if (!request)
- return NULL;
-
- init_completion(&request->wait_event);
-
- rndis_msg = &request->request_msg;
- rndis_msg->ndis_msg_type = msg_type;
- rndis_msg->msg_len = msg_len;
-
- /*
- * Set the request id. This field is always after the rndis header for
- * request/response packet types so we just used the SetRequest as a
- * template
- */
- set = &rndis_msg->msg.set_req;
- set->req_id = atomic_inc_return(&dev->new_req_id);
-
- /* Add to the request list */
- spin_lock_irqsave(&dev->request_lock, flags);
- list_add_tail(&request->list_ent, &dev->req_list);
- spin_unlock_irqrestore(&dev->request_lock, flags);
-
- return request;
-}
-
-static void put_rndis_request(struct rndis_device *dev,
- struct rndis_request *req)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&dev->request_lock, flags);
- list_del(&req->list_ent);
- spin_unlock_irqrestore(&dev->request_lock, flags);
-
- kfree(req);
-}
-
-static void dump_rndis_message(struct hv_device *hv_dev,
- struct rndis_message *rndis_msg)
-{
- struct net_device *netdev = dev_get_drvdata(&hv_dev->device);
-
- switch (rndis_msg->ndis_msg_type) {
- case REMOTE_NDIS_PACKET_MSG:
- netdev_dbg(netdev, "REMOTE_NDIS_PACKET_MSG (len %u, "
- "data offset %u data len %u, # oob %u, "
- "oob offset %u, oob len %u, pkt offset %u, "
- "pkt len %u\n",
- rndis_msg->msg_len,
- rndis_msg->msg.pkt.data_offset,
- rndis_msg->msg.pkt.data_len,
- rndis_msg->msg.pkt.num_oob_data_elements,
- rndis_msg->msg.pkt.oob_data_offset,
- rndis_msg->msg.pkt.oob_data_len,
- rndis_msg->msg.pkt.per_pkt_info_offset,
- rndis_msg->msg.pkt.per_pkt_info_len);
- break;
-
- case REMOTE_NDIS_INITIALIZE_CMPLT:
- netdev_dbg(netdev, "REMOTE_NDIS_INITIALIZE_CMPLT "
- "(len %u, id 0x%x, status 0x%x, major %d, minor %d, "
- "device flags %d, max xfer size 0x%x, max pkts %u, "
- "pkt aligned %u)\n",
- rndis_msg->msg_len,
- rndis_msg->msg.init_complete.req_id,
- rndis_msg->msg.init_complete.status,
- rndis_msg->msg.init_complete.major_ver,
- rndis_msg->msg.init_complete.minor_ver,
- rndis_msg->msg.init_complete.dev_flags,
- rndis_msg->msg.init_complete.max_xfer_size,
- rndis_msg->msg.init_complete.
- max_pkt_per_msg,
- rndis_msg->msg.init_complete.
- pkt_alignment_factor);
- break;
-
- case REMOTE_NDIS_QUERY_CMPLT:
- netdev_dbg(netdev, "REMOTE_NDIS_QUERY_CMPLT "
- "(len %u, id 0x%x, status 0x%x, buf len %u, "
- "buf offset %u)\n",
- rndis_msg->msg_len,
- rndis_msg->msg.query_complete.req_id,
- rndis_msg->msg.query_complete.status,
- rndis_msg->msg.query_complete.
- info_buflen,
- rndis_msg->msg.query_complete.
- info_buf_offset);
- break;
-
- case REMOTE_NDIS_SET_CMPLT:
- netdev_dbg(netdev,
- "REMOTE_NDIS_SET_CMPLT (len %u, id 0x%x, status 0x%x)\n",
- rndis_msg->msg_len,
- rndis_msg->msg.set_complete.req_id,
- rndis_msg->msg.set_complete.status);
- break;
-
- case REMOTE_NDIS_INDICATE_STATUS_MSG:
- netdev_dbg(netdev, "REMOTE_NDIS_INDICATE_STATUS_MSG "
- "(len %u, status 0x%x, buf len %u, buf offset %u)\n",
- rndis_msg->msg_len,
- rndis_msg->msg.indicate_status.status,
- rndis_msg->msg.indicate_status.status_buflen,
- rndis_msg->msg.indicate_status.status_buf_offset);
- break;
-
- default:
- netdev_dbg(netdev, "0x%x (len %u)\n",
- rndis_msg->ndis_msg_type,
- rndis_msg->msg_len);
- break;
- }
-}
-
-static int rndis_filter_send_request(struct rndis_device *dev,
- struct rndis_request *req)
-{
- int ret;
- struct hv_netvsc_packet *packet;
-
- /* Setup the packet to send it */
- packet = &req->pkt;
-
- packet->is_data_pkt = false;
- packet->total_data_buflen = req->request_msg.msg_len;
- packet->page_buf_cnt = 1;
-
- packet->page_buf[0].pfn = virt_to_phys(&req->request_msg) >>
- PAGE_SHIFT;
- packet->page_buf[0].len = req->request_msg.msg_len;
- packet->page_buf[0].offset =
- (unsigned long)&req->request_msg & (PAGE_SIZE - 1);
-
- packet->completion.send.send_completion_ctx = req;/* packet; */
- packet->completion.send.send_completion =
- rndis_filter_send_request_completion;
- packet->completion.send.send_completion_tid = (unsigned long)dev;
-
- ret = netvsc_send(dev->net_dev->dev, packet);
- return ret;
-}
-
-static void rndis_filter_receive_response(struct rndis_device *dev,
- struct rndis_message *resp)
-{
- struct rndis_request *request = NULL;
- bool found = false;
- unsigned long flags;
-
- spin_lock_irqsave(&dev->request_lock, flags);
- list_for_each_entry(request, &dev->req_list, list_ent) {
- /*
- * All request/response message contains RequestId as the 1st
- * field
- */
- if (request->request_msg.msg.init_req.req_id
- == resp->msg.init_complete.req_id) {
- found = true;
- break;
- }
- }
- spin_unlock_irqrestore(&dev->request_lock, flags);
-
- if (found) {
- if (resp->msg_len <= sizeof(struct rndis_message)) {
- memcpy(&request->response_msg, resp,
- resp->msg_len);
- } else {
- dev_err(&dev->net_dev->dev->device,
- "rndis response buffer overflow "
- "detected (size %u max %zu)\n",
- resp->msg_len,
- sizeof(struct rndis_filter_packet));
-
- if (resp->ndis_msg_type ==
- REMOTE_NDIS_RESET_CMPLT) {
- /* does not have a request id field */
- request->response_msg.msg.reset_complete.
- status = STATUS_BUFFER_OVERFLOW;
- } else {
- request->response_msg.msg.
- init_complete.status =
- STATUS_BUFFER_OVERFLOW;
- }
- }
-
- complete(&request->wait_event);
- } else {
- dev_err(&dev->net_dev->dev->device,
- "no rndis request found for this response "
- "(id 0x%x res type 0x%x)\n",
- resp->msg.init_complete.req_id,
- resp->ndis_msg_type);
- }
-}
-
-static void rndis_filter_receive_indicate_status(struct rndis_device *dev,
- struct rndis_message *resp)
-{
- struct rndis_indicate_status *indicate =
- &resp->msg.indicate_status;
-
- if (indicate->status == RNDIS_STATUS_MEDIA_CONNECT) {
- netvsc_linkstatus_callback(
- dev->net_dev->dev, 1);
- } else if (indicate->status == RNDIS_STATUS_MEDIA_DISCONNECT) {
- netvsc_linkstatus_callback(
- dev->net_dev->dev, 0);
- } else {
- /*
- * TODO:
- */
- }
-}
-
-static void rndis_filter_receive_data(struct rndis_device *dev,
- struct rndis_message *msg,
- struct hv_netvsc_packet *pkt)
-{
- struct rndis_packet *rndis_pkt;
- u32 data_offset;
-
- rndis_pkt = &msg->msg.pkt;
-
- /*
- * FIXME: Handle multiple rndis pkt msgs that maybe enclosed in this
- * netvsc packet (ie TotalDataBufferLength != MessageLength)
- */
-
- /* Remove the rndis header and pass it back up the stack */
- data_offset = RNDIS_HEADER_SIZE + rndis_pkt->data_offset;
-
- pkt->total_data_buflen -= data_offset;
- pkt->page_buf[0].offset += data_offset;
- pkt->page_buf[0].len -= data_offset;
-
- pkt->is_data_pkt = true;
-
- netvsc_recv_callback(dev->net_dev->dev, pkt);
-}
-
-int rndis_filter_receive(struct hv_device *dev,
- struct hv_netvsc_packet *pkt)
-{
- struct netvsc_device *net_dev = dev->ext;
- struct rndis_device *rndis_dev;
- struct rndis_message rndis_msg;
- struct rndis_message *rndis_hdr;
-
- if (!net_dev)
- return -EINVAL;
-
- /* Make sure the rndis device state is initialized */
- if (!net_dev->extension) {
- dev_err(&dev->device, "got rndis message but no rndis device - "
- "dropping this message!\n");
- return -1;
- }
-
- rndis_dev = (struct rndis_device *)net_dev->extension;
- if (rndis_dev->state == RNDIS_DEV_UNINITIALIZED) {
- dev_err(&dev->device, "got rndis message but rndis device "
- "uninitialized...dropping this message!\n");
- return -1;
- }
-
- rndis_hdr = (struct rndis_message *)kmap_atomic(
- pfn_to_page(pkt->page_buf[0].pfn), KM_IRQ0);
-
- rndis_hdr = (void *)((unsigned long)rndis_hdr +
- pkt->page_buf[0].offset);
-
- /* Make sure we got a valid rndis message */
- if ((rndis_hdr->ndis_msg_type != REMOTE_NDIS_PACKET_MSG) &&
- (rndis_hdr->msg_len > sizeof(struct rndis_message))) {
- dev_err(&dev->device, "incoming rndis message buffer overflow "
- "detected (got %u, max %zu)..marking it an error!\n",
- rndis_hdr->msg_len,
- sizeof(struct rndis_message));
- }
-
- memcpy(&rndis_msg, rndis_hdr,
- (rndis_hdr->msg_len > sizeof(struct rndis_message)) ?
- sizeof(struct rndis_message) :
- rndis_hdr->msg_len);
-
- kunmap_atomic(rndis_hdr - pkt->page_buf[0].offset, KM_IRQ0);
-
- dump_rndis_message(dev, &rndis_msg);
-
- switch (rndis_msg.ndis_msg_type) {
- case REMOTE_NDIS_PACKET_MSG:
- /* data msg */
- rndis_filter_receive_data(rndis_dev, &rndis_msg, pkt);
- break;
-
- case REMOTE_NDIS_INITIALIZE_CMPLT:
- case REMOTE_NDIS_QUERY_CMPLT:
- case REMOTE_NDIS_SET_CMPLT:
- /* completion msgs */
- rndis_filter_receive_response(rndis_dev, &rndis_msg);
- break;
-
- case REMOTE_NDIS_INDICATE_STATUS_MSG:
- /* notification msgs */
- rndis_filter_receive_indicate_status(rndis_dev, &rndis_msg);
- break;
- default:
- dev_err(&dev->device,
- "unhandled rndis message (type %u len %u)\n",
- rndis_msg.ndis_msg_type,
- rndis_msg.msg_len);
- break;
- }
-
- return 0;
-}
-
-static int rndis_filter_query_device(struct rndis_device *dev, u32 oid,
- void *result, u32 *result_size)
-{
- struct rndis_request *request;
- u32 inresult_size = *result_size;
- struct rndis_query_request *query;
- struct rndis_query_complete *query_complete;
- int ret = 0;
- int t;
-
- if (!result)
- return -EINVAL;
-
- *result_size = 0;
- request = get_rndis_request(dev, REMOTE_NDIS_QUERY_MSG,
- RNDIS_MESSAGE_SIZE(struct rndis_query_request));
- if (!request) {
- ret = -1;
- goto Cleanup;
- }
-
- /* Setup the rndis query */
- query = &request->request_msg.msg.query_req;
- query->oid = oid;
- query->info_buf_offset = sizeof(struct rndis_query_request);
- query->info_buflen = 0;
- query->dev_vc_handle = 0;
-
- ret = rndis_filter_send_request(dev, request);
- if (ret != 0)
- goto Cleanup;
-
- t = wait_for_completion_timeout(&request->wait_event, HZ);
- if (t == 0) {
- ret = -ETIMEDOUT;
- goto Cleanup;
- }
-
- /* Copy the response back */
- query_complete = &request->response_msg.msg.query_complete;
-
- if (query_complete->info_buflen > inresult_size) {
- ret = -1;
- goto Cleanup;
- }
-
- memcpy(result,
- (void *)((unsigned long)query_complete +
- query_complete->info_buf_offset),
- query_complete->info_buflen);
-
- *result_size = query_complete->info_buflen;
-
-Cleanup:
- if (request)
- put_rndis_request(dev, request);
-
- return ret;
-}
-
-static int rndis_filter_query_device_mac(struct rndis_device *dev)
-{
- u32 size = ETH_ALEN;
-
- return rndis_filter_query_device(dev,
- RNDIS_OID_802_3_PERMANENT_ADDRESS,
- dev->hw_mac_adr, &size);
-}
-
-static int rndis_filter_query_device_link_status(struct rndis_device *dev)
-{
- u32 size = sizeof(u32);
-
- return rndis_filter_query_device(dev,
- RNDIS_OID_GEN_MEDIA_CONNECT_STATUS,
- &dev->link_stat, &size);
-}
-
-static int rndis_filter_set_packet_filter(struct rndis_device *dev,
- u32 new_filter)
-{
- struct rndis_request *request;
- struct rndis_set_request *set;
- struct rndis_set_complete *set_complete;
- u32 status;
- int ret, t;
-
- request = get_rndis_request(dev, REMOTE_NDIS_SET_MSG,
- RNDIS_MESSAGE_SIZE(struct rndis_set_request) +
- sizeof(u32));
- if (!request) {
- ret = -1;
- goto Cleanup;
- }
-
- /* Setup the rndis set */
- set = &request->request_msg.msg.set_req;
- set->oid = RNDIS_OID_GEN_CURRENT_PACKET_FILTER;
- set->info_buflen = sizeof(u32);
- set->info_buf_offset = sizeof(struct rndis_set_request);
-
- memcpy((void *)(unsigned long)set + sizeof(struct rndis_set_request),
- &new_filter, sizeof(u32));
-
- ret = rndis_filter_send_request(dev, request);
- if (ret != 0)
- goto Cleanup;
-
- t = wait_for_completion_timeout(&request->wait_event, HZ);
-
- if (t == 0) {
- ret = -1;
- dev_err(&dev->net_dev->dev->device,
- "timeout before we got a set response...\n");
- /*
- * We can't deallocate the request since we may still receive a
- * send completion for it.
- */
- goto Exit;
- } else {
- if (ret > 0)
- ret = 0;
- set_complete = &request->response_msg.msg.set_complete;
- status = set_complete->status;
- }
-
-Cleanup:
- if (request)
- put_rndis_request(dev, request);
-Exit:
- return ret;
-}
-
-
-static int rndis_filter_init_device(struct rndis_device *dev)
-{
- struct rndis_request *request;
- struct rndis_initialize_request *init;
- struct rndis_initialize_complete *init_complete;
- u32 status;
- int ret, t;
-
- request = get_rndis_request(dev, REMOTE_NDIS_INITIALIZE_MSG,
- RNDIS_MESSAGE_SIZE(struct rndis_initialize_request));
- if (!request) {
- ret = -1;
- goto Cleanup;
- }
-
- /* Setup the rndis set */
- init = &request->request_msg.msg.init_req;
- init->major_ver = RNDIS_MAJOR_VERSION;
- init->minor_ver = RNDIS_MINOR_VERSION;
- /* FIXME: Use 1536 - rounded ethernet frame size */
- init->max_xfer_size = 2048;
-
- dev->state = RNDIS_DEV_INITIALIZING;
-
- ret = rndis_filter_send_request(dev, request);
- if (ret != 0) {
- dev->state = RNDIS_DEV_UNINITIALIZED;
- goto Cleanup;
- }
-
-
- t = wait_for_completion_timeout(&request->wait_event, HZ);
-
- if (t == 0) {
- ret = -ETIMEDOUT;
- goto Cleanup;
- }
-
- init_complete = &request->response_msg.msg.init_complete;
- status = init_complete->status;
- if (status == RNDIS_STATUS_SUCCESS) {
- dev->state = RNDIS_DEV_INITIALIZED;
- ret = 0;
- } else {
- dev->state = RNDIS_DEV_UNINITIALIZED;
- ret = -1;
- }
-
-Cleanup:
- if (request)
- put_rndis_request(dev, request);
-
- return ret;
-}
-
-static void rndis_filter_halt_device(struct rndis_device *dev)
-{
- struct rndis_request *request;
- struct rndis_halt_request *halt;
-
- /* Attempt to do a rndis device halt */
- request = get_rndis_request(dev, REMOTE_NDIS_HALT_MSG,
- RNDIS_MESSAGE_SIZE(struct rndis_halt_request));
- if (!request)
- goto Cleanup;
-
- /* Setup the rndis set */
- halt = &request->request_msg.msg.halt_req;
- halt->req_id = atomic_inc_return(&dev->new_req_id);
-
- /* Ignore return since this msg is optional. */
- rndis_filter_send_request(dev, request);
-
- dev->state = RNDIS_DEV_UNINITIALIZED;
-
-Cleanup:
- if (request)
- put_rndis_request(dev, request);
- return;
-}
-
-static int rndis_filter_open_device(struct rndis_device *dev)
-{
- int ret;
-
- if (dev->state != RNDIS_DEV_INITIALIZED)
- return 0;
-
- ret = rndis_filter_set_packet_filter(dev,
- NDIS_PACKET_TYPE_BROADCAST |
- NDIS_PACKET_TYPE_ALL_MULTICAST |
- NDIS_PACKET_TYPE_DIRECTED);
- if (ret == 0)
- dev->state = RNDIS_DEV_DATAINITIALIZED;
-
- return ret;
-}
-
-static int rndis_filter_close_device(struct rndis_device *dev)
-{
- int ret;
-
- if (dev->state != RNDIS_DEV_DATAINITIALIZED)
- return 0;
-
- ret = rndis_filter_set_packet_filter(dev, 0);
- if (ret == 0)
- dev->state = RNDIS_DEV_INITIALIZED;
-
- return ret;
-}
-
-int rndis_filter_device_add(struct hv_device *dev,
- void *additional_info)
-{
- int ret;
- struct netvsc_device *netDevice;
- struct rndis_device *rndisDevice;
- struct netvsc_device_info *deviceInfo = additional_info;
-
- rndisDevice = get_rndis_device();
- if (!rndisDevice)
- return -1;
-
- /*
- * Let the inner driver handle this first to create the netvsc channel
- * NOTE! Once the channel is created, we may get a receive callback
- * (RndisFilterOnReceive()) before this call is completed
- */
- ret = netvsc_device_add(dev, additional_info);
- if (ret != 0) {
- kfree(rndisDevice);
- return ret;
- }
-
-
- /* Initialize the rndis device */
- netDevice = dev->ext;
-
- netDevice->extension = rndisDevice;
- rndisDevice->net_dev = netDevice;
-
- /* Send the rndis initialization message */
- ret = rndis_filter_init_device(rndisDevice);
- if (ret != 0) {
- /*
- * TODO: If rndis init failed, we will need to shut down the
- * channel
- */
- }
-
- /* Get the mac address */
- ret = rndis_filter_query_device_mac(rndisDevice);
- if (ret != 0) {
- /*
- * TODO: shutdown rndis device and the channel
- */
- }
-
- memcpy(deviceInfo->mac_adr, rndisDevice->hw_mac_adr, ETH_ALEN);
-
- rndis_filter_query_device_link_status(rndisDevice);
-
- deviceInfo->link_state = rndisDevice->link_stat;
-
- dev_info(&dev->device, "Device MAC %pM link state %s",
- rndisDevice->hw_mac_adr,
- ((deviceInfo->link_state) ? ("down\n") : ("up\n")));
-
- return ret;
-}
-
-void rndis_filter_device_remove(struct hv_device *dev)
-{
- struct netvsc_device *net_dev = dev->ext;
- struct rndis_device *rndis_dev = net_dev->extension;
-
- /* Halt and release the rndis device */
- rndis_filter_halt_device(rndis_dev);
-
- kfree(rndis_dev);
- net_dev->extension = NULL;
-
- netvsc_device_remove(dev);
-}
-
-
-int rndis_filter_open(struct hv_device *dev)
-{
- struct netvsc_device *netDevice = dev->ext;
-
- if (!netDevice)
- return -EINVAL;
-
- return rndis_filter_open_device(netDevice->extension);
-}
-
-int rndis_filter_close(struct hv_device *dev)
-{
- struct netvsc_device *netDevice = dev->ext;
-
- if (!netDevice)
- return -EINVAL;
-
- return rndis_filter_close_device(netDevice->extension);
-}
-
-int rndis_filter_send(struct hv_device *dev,
- struct hv_netvsc_packet *pkt)
-{
- int ret;
- struct rndis_filter_packet *filterPacket;
- struct rndis_message *rndisMessage;
- struct rndis_packet *rndisPacket;
- u32 rndisMessageSize;
-
- /* Add the rndis header */
- filterPacket = (struct rndis_filter_packet *)pkt->extension;
-
- memset(filterPacket, 0, sizeof(struct rndis_filter_packet));
-
- rndisMessage = &filterPacket->msg;
- rndisMessageSize = RNDIS_MESSAGE_SIZE(struct rndis_packet);
-
- rndisMessage->ndis_msg_type = REMOTE_NDIS_PACKET_MSG;
- rndisMessage->msg_len = pkt->total_data_buflen +
- rndisMessageSize;
-
- rndisPacket = &rndisMessage->msg.pkt;
- rndisPacket->data_offset = sizeof(struct rndis_packet);
- rndisPacket->data_len = pkt->total_data_buflen;
-
- pkt->is_data_pkt = true;
- pkt->page_buf[0].pfn = virt_to_phys(rndisMessage) >> PAGE_SHIFT;
- pkt->page_buf[0].offset =
- (unsigned long)rndisMessage & (PAGE_SIZE-1);
- pkt->page_buf[0].len = rndisMessageSize;
-
- /* Save the packet send completion and context */
- filterPacket->completion = pkt->completion.send.send_completion;
- filterPacket->completion_ctx =
- pkt->completion.send.send_completion_ctx;
-
- /* Use ours */
- pkt->completion.send.send_completion = rndis_filter_send_completion;
- pkt->completion.send.send_completion_ctx = filterPacket;
-
- ret = netvsc_send(dev, pkt);
- if (ret != 0) {
- /*
- * Reset the completion to originals to allow retries from
- * above
- */
- pkt->completion.send.send_completion =
- filterPacket->completion;
- pkt->completion.send.send_completion_ctx =
- filterPacket->completion_ctx;
- }
-
- return ret;
-}
-
-static void rndis_filter_send_completion(void *ctx)
-{
- struct rndis_filter_packet *filterPacket = ctx;
-
- /* Pass it back to the original handler */
- filterPacket->completion(filterPacket->completion_ctx);
-}
-
-
-static void rndis_filter_send_request_completion(void *ctx)
-{
- /* Noop */
-}
To network maintainers, Over the last several months we have addressed all the known issues in our Hyper-V virtual network driver. We are very keen on getting this driver out of the staging area. To that end, we would like to request you to review this code. Thanks, Haiyang Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> --- drivers/net/Kconfig | 2 + drivers/net/Makefile | 1 + drivers/net/hyperv/Kconfig | 10 + drivers/net/hyperv/Makefile | 4 + drivers/net/hyperv/hyperv_net.h | 1057 +++++++++++++++++++++++++++++++++++++ drivers/net/hyperv/netvsc.c | 1014 +++++++++++++++++++++++++++++++++++ drivers/net/hyperv/netvsc_drv.c | 473 +++++++++++++++++ drivers/net/hyperv/rndis_filter.c | 830 +++++++++++++++++++++++++++++ drivers/staging/hv/Kconfig | 7 - drivers/staging/hv/Makefile | 2 - drivers/staging/hv/hyperv_net.h | 1057 ------------------------------------- drivers/staging/hv/netvsc.c | 1015 ----------------------------------- drivers/staging/hv/netvsc_drv.c | 474 ----------------- drivers/staging/hv/rndis_filter.c | 831 ----------------------------- 14 files changed, 3391 insertions(+), 3386 deletions(-) create mode 100644 drivers/net/hyperv/Kconfig create mode 100644 drivers/net/hyperv/Makefile create mode 100644 drivers/net/hyperv/hyperv_net.h create mode 100644 drivers/net/hyperv/netvsc.c create mode 100644 drivers/net/hyperv/netvsc_drv.c create mode 100644 drivers/net/hyperv/rndis_filter.c delete mode 100644 drivers/staging/hv/hyperv_net.h delete mode 100644 drivers/staging/hv/netvsc.c delete mode 100644 drivers/staging/hv/netvsc_drv.c delete mode 100644 drivers/staging/hv/rndis_filter.c