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linux/drivers/net/hyperv/hyperv_net.h
KY Srinivasan b56fc3c536 hv_netvsc: Fix a bug in netvsc_start_xmit() 
Commit b08cc79155 eliminated memory
allocation in the packet send path:

    "hv_netvsc: Eliminate memory allocation in the packet send path

    The network protocol used to communicate with the host is the remote ndis (rndis)
    protocol. We need to decorate each outgoing packet with a rndis header and
    additional rndis state (rndis per-packet state). To manage this state, we
    currently allocate memory in the transmit path. Eliminate this allocation by
    requesting additional head room in the skb."

This commit introduced a bug since it did not account for the case if the skb
was cloned. Fix this bug.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Tested-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-29 15:20:39 -04:00

1222 lines
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/*
*
* 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, see <http://www.gnu.org/licenses/>.
*
* 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 <linux/hyperv.h>
#include <linux/rndis.h>
/* RSS related */
#define OID_GEN_RECEIVE_SCALE_CAPABILITIES 0x00010203 /* query only */
#define OID_GEN_RECEIVE_SCALE_PARAMETERS 0x00010204 /* query and set */
#define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
#define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
#define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
#define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2
struct ndis_obj_header {
u8 type;
u8 rev;
u16 size;
} __packed;
/* ndis_recv_scale_cap/cap_flag */
#define NDIS_RSS_CAPS_MESSAGE_SIGNALED_INTERRUPTS 0x01000000
#define NDIS_RSS_CAPS_CLASSIFICATION_AT_ISR 0x02000000
#define NDIS_RSS_CAPS_CLASSIFICATION_AT_DPC 0x04000000
#define NDIS_RSS_CAPS_USING_MSI_X 0x08000000
#define NDIS_RSS_CAPS_RSS_AVAILABLE_ON_PORTS 0x10000000
#define NDIS_RSS_CAPS_SUPPORTS_MSI_X 0x20000000
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV4 0x00000100
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6 0x00000200
#define NDIS_RSS_CAPS_HASH_TYPE_TCP_IPV6_EX 0x00000400
struct ndis_recv_scale_cap { /* NDIS_RECEIVE_SCALE_CAPABILITIES */
struct ndis_obj_header hdr;
u32 cap_flag;
u32 num_int_msg;
u32 num_recv_que;
u16 num_indirect_tabent;
} __packed;
/* ndis_recv_scale_param flags */
#define NDIS_RSS_PARAM_FLAG_BASE_CPU_UNCHANGED 0x0001
#define NDIS_RSS_PARAM_FLAG_HASH_INFO_UNCHANGED 0x0002
#define NDIS_RSS_PARAM_FLAG_ITABLE_UNCHANGED 0x0004
#define NDIS_RSS_PARAM_FLAG_HASH_KEY_UNCHANGED 0x0008
#define NDIS_RSS_PARAM_FLAG_DISABLE_RSS 0x0010
/* Hash info bits */
#define NDIS_HASH_FUNC_TOEPLITZ 0x00000001
#define NDIS_HASH_IPV4 0x00000100
#define NDIS_HASH_TCP_IPV4 0x00000200
#define NDIS_HASH_IPV6 0x00000400
#define NDIS_HASH_IPV6_EX 0x00000800
#define NDIS_HASH_TCP_IPV6 0x00001000
#define NDIS_HASH_TCP_IPV6_EX 0x00002000
#define NDIS_RSS_INDIRECTION_TABLE_MAX_SIZE_REVISION_2 (128 * 4)
#define NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2 40
#define ITAB_NUM 128
#define HASH_KEYLEN NDIS_RSS_HASH_SECRET_KEY_MAX_SIZE_REVISION_2
extern u8 netvsc_hash_key[];
struct ndis_recv_scale_param { /* NDIS_RECEIVE_SCALE_PARAMETERS */
struct ndis_obj_header hdr;
/* Qualifies the rest of the information */
u16 flag;
/* The base CPU number to do receive processing. not used */
u16 base_cpu_number;
/* This describes the hash function and type being enabled */
u32 hashinfo;
/* The size of indirection table array */
u16 indirect_tabsize;
/* The offset of the indirection table from the beginning of this
* structure
*/
u32 indirect_taboffset;
/* The size of the hash secret key */
u16 hashkey_size;
/* The offset of the secret key from the beginning of this structure */
u32 kashkey_offset;
u32 processor_masks_offset;
u32 num_processor_masks;
u32 processor_masks_entry_size;
};
/* Fwd declaration */
struct ndis_tcp_ip_checksum_info;
/*
* Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame
* within the RNDIS
*/
struct hv_netvsc_packet {
/* Bookkeeping stuff */
u32 status;
bool is_data_pkt;
bool xmit_more; /* from skb */
bool cp_partial; /* partial copy into send buffer */
u16 vlan_tci;
u16 q_idx;
struct vmbus_channel *channel;
u64 send_completion_tid;
void *send_completion_ctx;
void (*send_completion)(void *context);
u32 send_buf_index;
/* This points to the memory after page_buf */
struct rndis_message *rndis_msg;
u32 rmsg_size; /* RNDIS header and PPI size */
u32 rmsg_pgcnt; /* page count of RNDIS header and PPI */
u32 total_data_buflen;
/* Points to the send/receive buffer where the ethernet frame is */
void *data;
u32 page_buf_cnt;
struct hv_page_buffer *page_buf;
};
struct netvsc_device_info {
unsigned char mac_adr[ETH_ALEN];
bool link_state; /* 0 - link up, 1 - link down */
int ring_size;
};
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;
bool link_state;
bool link_change;
atomic_t new_req_id;
spinlock_t request_lock;
struct list_head req_list;
unsigned char hw_mac_adr[ETH_ALEN];
};
/* 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,
struct rndis_message *resp);
void netvsc_xmit_completion(void *context);
int netvsc_recv_callback(struct hv_device *device_obj,
struct hv_netvsc_packet *packet,
struct ndis_tcp_ip_checksum_info *csum_info);
void netvsc_channel_cb(void *context);
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_set_packet_filter(struct rndis_device *dev, u32 new_filter);
int rndis_filter_set_device_mac(struct hv_device *hdev, char *mac);
#define NVSP_INVALID_PROTOCOL_VERSION ((u32)0xFFFFFFFF)
#define NVSP_PROTOCOL_VERSION_1 2
#define NVSP_PROTOCOL_VERSION_2 0x30002
#define NVSP_PROTOCOL_VERSION_4 0x40000
#define NVSP_PROTOCOL_VERSION_5 0x50000
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,
/* Version 2 messages */
NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF,
NVSP_MSG2_TYPE_SEND_CHIMNEY_DELEGATED_BUF_COMP,
NVSP_MSG2_TYPE_REVOKE_CHIMNEY_DELEGATED_BUF,
NVSP_MSG2_TYPE_RESUME_CHIMNEY_RX_INDICATION,
NVSP_MSG2_TYPE_TERMINATE_CHIMNEY,
NVSP_MSG2_TYPE_TERMINATE_CHIMNEY_COMP,
NVSP_MSG2_TYPE_INDICATE_CHIMNEY_EVENT,
NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT,
NVSP_MSG2_TYPE_SEND_CHIMNEY_PKT_COMP,
NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ,
NVSP_MSG2_TYPE_POST_CHIMNEY_RECV_REQ_COMP,
NVSP_MSG2_TYPE_ALLOC_RXBUF,
NVSP_MSG2_TYPE_ALLOC_RXBUF_COMP,
NVSP_MSG2_TYPE_FREE_RXBUF,
NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT,
NVSP_MSG2_TYPE_SEND_VMQ_RNDIS_PKT_COMP,
NVSP_MSG2_TYPE_SEND_NDIS_CONFIG,
NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE,
NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
NVSP_MSG2_MAX = NVSP_MSG2_TYPE_ALLOC_CHIMNEY_HANDLE_COMP,
/* Version 4 messages */
NVSP_MSG4_TYPE_SEND_VF_ASSOCIATION,
NVSP_MSG4_TYPE_SWITCH_DATA_PATH,
NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
NVSP_MSG4_MAX = NVSP_MSG4_TYPE_UPLINK_CONNECT_STATE_DEPRECATED,
/* Version 5 messages */
NVSP_MSG5_TYPE_OID_QUERY_EX,
NVSP_MSG5_TYPE_OID_QUERY_EX_COMP,
NVSP_MSG5_TYPE_SUBCHANNEL,
NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
NVSP_MSG5_MAX = NVSP_MSG5_TYPE_SEND_INDIRECTION_TABLE,
};
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_PROTOCOL_UNSUPPORTED,
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;
/*
* Network VSP protocol version 2 messages:
*/
struct nvsp_2_vsc_capability {
union {
u64 data;
struct {
u64 vmq:1;
u64 chimney:1;
u64 sriov:1;
u64 ieee8021q:1;
u64 correlation_id:1;
};
};
} __packed;
struct nvsp_2_send_ndis_config {
u32 mtu;
u32 reserved;
struct nvsp_2_vsc_capability capability;
} __packed;
/* Allocate receive buffer */
struct nvsp_2_alloc_rxbuf {
/* Allocation ID to match the allocation request and response */
u32 alloc_id;
/* Length of the VM shared memory receive buffer that needs to
* be allocated
*/
u32 len;
} __packed;
/* Allocate receive buffer complete */
struct nvsp_2_alloc_rxbuf_comp {
/* The NDIS_STATUS code for buffer allocation */
u32 status;
u32 alloc_id;
/* GPADL handle for the allocated receive buffer */
u32 gpadl_handle;
/* Receive buffer ID */
u64 recv_buf_id;
} __packed;
struct nvsp_2_free_rxbuf {
u64 recv_buf_id;
} __packed;
union nvsp_2_message_uber {
struct nvsp_2_send_ndis_config send_ndis_config;
struct nvsp_2_alloc_rxbuf alloc_rxbuf;
struct nvsp_2_alloc_rxbuf_comp alloc_rxbuf_comp;
struct nvsp_2_free_rxbuf free_rxbuf;
} __packed;
enum nvsp_subchannel_operation {
NVSP_SUBCHANNEL_NONE = 0,
NVSP_SUBCHANNEL_ALLOCATE,
NVSP_SUBCHANNEL_MAX
};
struct nvsp_5_subchannel_request {
u32 op;
u32 num_subchannels;
} __packed;
struct nvsp_5_subchannel_complete {
u32 status;
u32 num_subchannels; /* Actual number of subchannels allocated */
} __packed;
struct nvsp_5_send_indirect_table {
/* The number of entries in the send indirection table */
u32 count;
/* The offset of the send indireciton table from top of this struct.
* The send indirection table tells which channel to put the send
* traffic on. Each entry is a channel number.
*/
u32 offset;
} __packed;
union nvsp_5_message_uber {
struct nvsp_5_subchannel_request subchn_req;
struct nvsp_5_subchannel_complete subchn_comp;
struct nvsp_5_send_indirect_table send_table;
} __packed;
union nvsp_all_messages {
union nvsp_message_init_uber init_msg;
union nvsp_1_message_uber v1_msg;
union nvsp_2_message_uber v2_msg;
union nvsp_5_message_uber v5_msg;
} __packed;
/* ALL Messages */
struct nvsp_message {
struct nvsp_message_header hdr;
union nvsp_all_messages msg;
} __packed;
#define NETVSC_MTU 65536
#define NETVSC_RECEIVE_BUFFER_SIZE (1024*1024*16) /* 16MB */
#define NETVSC_RECEIVE_BUFFER_SIZE_LEGACY (1024*1024*15) /* 15MB */
#define NETVSC_SEND_BUFFER_SIZE (1024 * 1024 * 15) /* 15MB */
#define NETVSC_INVALID_INDEX -1
#define NETVSC_RECEIVE_BUFFER_ID 0xcafe
#define NETVSC_SEND_BUFFER_ID 0
#define NETVSC_PACKET_SIZE 4096
#define VRSS_SEND_TAB_SIZE 16
#define RNDIS_MAX_PKT_DEFAULT 8
#define RNDIS_PKT_ALIGN_DEFAULT 8
struct multi_send_data {
spinlock_t lock; /* protect struct multi_send_data */
struct hv_netvsc_packet *pkt; /* netvsc pkt pending */
u32 count; /* counter of batched packets */
};
/* The context of the netvsc device */
struct net_device_context {
/* point back to our device context */
struct hv_device *device_ctx;
struct delayed_work dwork;
struct work_struct work;
u32 msg_enable; /* debug level */
};
/* Per netvsc device */
struct netvsc_device {
struct hv_device *dev;
u32 nvsp_version;
atomic_t num_outstanding_sends;
wait_queue_head_t wait_drain;
bool start_remove;
bool destroy;
/* 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;
/* Send buffer allocated by us */
void *send_buf;
u32 send_buf_size;
u32 send_buf_gpadl_handle;
u32 send_section_cnt;
u32 send_section_size;
unsigned long *send_section_map;
int map_words;
/* 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]; */
struct net_device *ndev;
struct vmbus_channel *chn_table[NR_CPUS];
u32 send_table[VRSS_SEND_TAB_SIZE];
u32 max_chn;
u32 num_chn;
atomic_t queue_sends[NR_CPUS];
/* Holds rndis device info */
void *extension;
int ring_size;
/* The primary channel callback buffer */
unsigned char *cb_buffer;
/* The sub channel callback buffer */
unsigned char *sub_cb_buf;
struct multi_send_data msd[NR_CPUS];
u32 max_pkt; /* max number of pkt in one send, e.g. 8 */
u32 pkt_align; /* alignment bytes, e.g. 8 */
/* The net device context */
struct net_device_context *nd_ctx;
};
/* 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 ppi_offset;
};
enum ndis_per_pkt_info_type {
TCPIP_CHKSUM_PKTINFO,
IPSEC_PKTINFO,
TCP_LARGESEND_PKTINFO,
CLASSIFICATION_HANDLE_PKTINFO,
NDIS_RESERVED,
SG_LIST_PKTINFO,
IEEE_8021Q_INFO,
ORIGINAL_PKTINFO,
PACKET_CANCEL_ID,
NBL_HASH_VALUE = PACKET_CANCEL_ID,
ORIGINAL_NET_BUFLIST,
CACHED_NET_BUFLIST,
SHORT_PKT_PADINFO,
MAX_PER_PKT_INFO
};
struct ndis_pkt_8021q_info {
union {
struct {
u32 pri:3; /* User Priority */
u32 cfi:1; /* Canonical Format ID */
u32 vlanid:12; /* VLAN ID */
u32 reserved:16;
};
u32 value;
};
};
struct ndis_oject_header {
u8 type;
u8 revision;
u16 size;
};
#define NDIS_OBJECT_TYPE_DEFAULT 0x80
#define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
#define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
#define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
#define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED 2
#define NDIS_OFFLOAD_PARAMETERS_LSOV1_ENABLED 2
#define NDIS_OFFLOAD_PARAMETERS_RSC_DISABLED 1
#define NDIS_OFFLOAD_PARAMETERS_RSC_ENABLED 2
#define NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED 1
#define NDIS_OFFLOAD_PARAMETERS_TX_ENABLED_RX_DISABLED 2
#define NDIS_OFFLOAD_PARAMETERS_RX_ENABLED_TX_DISABLED 3
#define NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED 4
#define NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE 1
#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4 0
#define NDIS_TCP_LARGE_SEND_OFFLOAD_IPV6 1
#define VERSION_4_OFFLOAD_SIZE 22
/*
* New offload OIDs for NDIS 6
*/
#define OID_TCP_OFFLOAD_CURRENT_CONFIG 0xFC01020B /* query only */
#define OID_TCP_OFFLOAD_PARAMETERS 0xFC01020C /* set only */
#define OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020D/* query only */
#define OID_TCP_CONNECTION_OFFLOAD_CURRENT_CONFIG 0xFC01020E /* query only */
#define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
#define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
struct ndis_offload_params {
struct ndis_oject_header header;
u8 ip_v4_csum;
u8 tcp_ip_v4_csum;
u8 udp_ip_v4_csum;
u8 tcp_ip_v6_csum;
u8 udp_ip_v6_csum;
u8 lso_v1;
u8 ip_sec_v1;
u8 lso_v2_ipv4;
u8 lso_v2_ipv6;
u8 tcp_connection_ip_v4;
u8 tcp_connection_ip_v6;
u32 flags;
u8 ip_sec_v2;
u8 ip_sec_v2_ip_v4;
struct {
u8 rsc_ip_v4;
u8 rsc_ip_v6;
};
struct {
u8 encapsulated_packet_task_offload;
u8 encapsulation_types;
};
};
struct ndis_tcp_ip_checksum_info {
union {
struct {
u32 is_ipv4:1;
u32 is_ipv6:1;
u32 tcp_checksum:1;
u32 udp_checksum:1;
u32 ip_header_checksum:1;
u32 reserved:11;
u32 tcp_header_offset:10;
} transmit;
struct {
u32 tcp_checksum_failed:1;
u32 udp_checksum_failed:1;
u32 ip_checksum_failed:1;
u32 tcp_checksum_succeeded:1;
u32 udp_checksum_succeeded:1;
u32 ip_checksum_succeeded:1;
u32 loopback:1;
u32 tcp_checksum_value_invalid:1;
u32 ip_checksum_value_invalid:1;
} receive;
u32 value;
};
};
struct ndis_tcp_lso_info {
union {
struct {
u32 unused:30;
u32 type:1;
u32 reserved2:1;
} transmit;
struct {
u32 mss:20;
u32 tcp_header_offset:10;
u32 type:1;
u32 reserved2:1;
} lso_v1_transmit;
struct {
u32 tcp_payload:30;
u32 type:1;
u32 reserved2:1;
} lso_v1_transmit_complete;
struct {
u32 mss:20;
u32 tcp_header_offset:10;
u32 type:1;
u32 ip_version:1;
} lso_v2_transmit;
struct {
u32 reserved:30;
u32 type:1;
u32 reserved2:1;
} lso_v2_transmit_complete;
u32 value;
};
};
#define NDIS_VLAN_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
sizeof(struct ndis_pkt_8021q_info))
#define NDIS_CSUM_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
sizeof(struct ndis_tcp_ip_checksum_info))
#define NDIS_LSO_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
sizeof(struct ndis_tcp_lso_info))
#define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
sizeof(u32))
/* Total size of all PPI data */
#define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
/* 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;
};
/* 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 RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
#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
#define INFO_IPV4 2
#define INFO_IPV6 4
#define INFO_TCP 2
#define INFO_UDP 4
#define TRANSPORT_INFO_NOT_IP 0
#define TRANSPORT_INFO_IPV4_TCP ((INFO_IPV4 << 16) | INFO_TCP)
#define TRANSPORT_INFO_IPV4_UDP ((INFO_IPV4 << 16) | INFO_UDP)
#define TRANSPORT_INFO_IPV6_TCP ((INFO_IPV6 << 16) | INFO_TCP)
#define TRANSPORT_INFO_IPV6_UDP ((INFO_IPV6 << 16) | INFO_UDP)
#endif /* _HYPERV_NET_H */
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