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Sync from SUSE:SLFO:Main hyper-v revision 920028c3cd1dd098469a5e5be0869e26

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This commit is contained in:
Adrian Schröter 2024-10-30 16:12:35 +01:00
parent daefaea87c
commit b3b43e70eb
8 changed files with 1537 additions and 1003 deletions
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22
hyper-v.changes
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@ -1,3 +1,25 @@
-------------------------------------------------------------------
Tue Oct 22 22:22:22 UTC 2024 - ohering@suse.de
- Add memory allocation check in hv_fcopy_start (94e86b17)
- suppress the invalid warning for packed member alignment (207e03b0)
- Add new fcopy application based on uio driver (82b0945c)
- Add vmbus_bufring (45bab4d7)
- kvp: Handle IPv4 and Ipv6 combination for keyfile format (f971f6dd)
- kvp: Some small fixes for handling NM keyfiles (c3803203)
- kvp: Support for keyfile based connection profile (42999c90)
- kvp: remove unnecessary (void*) conversions (22589542)
- Remove an extraneous "the" (f15f39fa)
- change http to https in hv_kvp_daemon.c (fa52a4b2)
- replace the copy of include/linux/hyperv.h with include/uapi/linux/hyperv.h (6de74d10)
- merge individual udev rules files into a single rules file
- package only files, not directories already owned by filesystem.rpm
- remove braces from rpm spec macros
- remove obsolete Group tag
- replace RPM_BUILD_ROOT with buildroot
- use a meaningful name for the UAPI include file
- use a meaningful variable name for ifcfg in hv_set_ifconfig.sh
-------------------------------------------------------------------
Tue Apr 23 10:01:10 UTC 2024 - pgajdos@suse.com

917
hyper-v.include.linux.hyperv.h
View File

@ -1,3 +1,4 @@
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
*
* Copyright (c) 2011, Microsoft Corporation.
@ -22,14 +23,21 @@
*
*/
#ifndef _HYPERV_H
#define _HYPERV_H
#ifndef _UAPI_HYPERV_H
#define _UAPI_HYPERV_H
#include <linux/types.h>
/* from linux/uuid.h */
typedef struct {
__u8 b[16];
} uuid_le;
/*
* Framework version for util services.
*/
#define UTIL_FW_MINOR 0
#define UTIL_WS2K8_FW_MAJOR 1
#define UTIL_WS2K8_FW_VERSION (UTIL_WS2K8_FW_MAJOR << 16 | UTIL_FW_MINOR)
#define UTIL_FW_MAJOR 3
#define UTIL_FW_VERSION (UTIL_FW_MAJOR << 16 | UTIL_FW_MINOR)
/*
@ -82,6 +90,17 @@ struct hv_vss_check_dm_info {
__u32 flags;
} __attribute__((packed));
/*
* struct hv_vss_msg encodes the fields that the Linux VSS
* driver accesses. However, FREEZE messages from Hyper-V contain
* additional LUN information that Linux doesn't use and are not
* represented in struct hv_vss_msg. A received FREEZE message may
* be as large as 6,260 bytes, so the driver must allocate at least
* that much space, not sizeof(struct hv_vss_msg). Other messages
* such as AUTO_RECOVER may be as large as 12,500 bytes. However,
* because the Linux VSS driver responds that it doesn't support
* auto-recovery, it should not receive such messages.
*/
struct hv_vss_msg {
union {
struct hv_vss_hdr vss_hdr;
@ -93,7 +112,6 @@ struct hv_vss_msg {
};
} __attribute__((packed));
/*
* Implementation of a host to guest copy facility.
*/
@ -112,8 +130,8 @@ enum hv_fcopy_op {
struct hv_fcopy_hdr {
__u32 operation;
uuid_le service_id0; /* currently unused */
uuid_le service_id1; /* currently unused */
__u8 service_id0[16]; /* currently unused */
__u8 service_id1[16]; /* currently unused */
} __attribute__((packed));
#define OVER_WRITE 0x1
@ -140,7 +158,6 @@ struct hv_do_fcopy {
__u8 data[DATA_FRAGMENT];
} __attribute__((packed));
/*
* An implementation of HyperV key value pair (KVP) functionality for Linux.
*
@ -213,7 +230,7 @@ struct hv_do_fcopy {
* kernel and user-level daemon communicate using a connector channel.
*
* The user mode component first registers with the
* the kernel component. Subsequently, the kernel component requests, data
* kernel component. Subsequently, the kernel component requests, data
* for the specified keys. In response to this message the user mode component
* fills in the value corresponding to the specified key. We overload the
* sequence field in the cn_msg header to define our KVP message types.
@ -391,880 +408,4 @@ struct hv_kvp_ip_msg {
struct hv_kvp_ipaddr_value kvp_ip_val;
} __attribute__((packed));
#ifdef __KERNEL__
#include <linux/scatterlist.h>
#include <linux/list.h>
#include <linux/uuid.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/mod_devicetable.h>
#define MAX_PAGE_BUFFER_COUNT 19
#define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
#pragma pack(push, 1)
/* Single-page buffer */
struct hv_page_buffer {
u32 len;
u32 offset;
u64 pfn;
};
/* Multiple-page buffer */
struct hv_multipage_buffer {
/* Length and Offset determines the # of pfns in the array */
u32 len;
u32 offset;
u64 pfn_array[MAX_MULTIPAGE_BUFFER_COUNT];
};
/* 0x18 includes the proprietary packet header */
#define MAX_PAGE_BUFFER_PACKET (0x18 + \
(sizeof(struct hv_page_buffer) * \
MAX_PAGE_BUFFER_COUNT))
#define MAX_MULTIPAGE_BUFFER_PACKET (0x18 + \
sizeof(struct hv_multipage_buffer))
#pragma pack(pop)
struct hv_ring_buffer {
/* Offset in bytes from the start of ring data below */
u32 write_index;
/* Offset in bytes from the start of ring data below */
u32 read_index;
u32 interrupt_mask;
/* Pad it to PAGE_SIZE so that data starts on page boundary */
u8 reserved[4084];
/* NOTE:
* The interrupt_mask field is used only for channels but since our
* vmbus connection also uses this data structure and its data starts
* here, we commented out this field.
*/
/*
* Ring data starts here + RingDataStartOffset
* !!! DO NOT place any fields below this !!!
*/
u8 buffer[0];
} __packed;
struct hv_ring_buffer_info {
struct hv_ring_buffer *ring_buffer;
u32 ring_size; /* Include the shared header */
spinlock_t ring_lock;
u32 ring_datasize; /* < ring_size */
u32 ring_data_startoffset;
};
struct hv_ring_buffer_debug_info {
u32 current_interrupt_mask;
u32 current_read_index;
u32 current_write_index;
u32 bytes_avail_toread;
u32 bytes_avail_towrite;
};
/*
*
* hv_get_ringbuffer_availbytes()
*
* Get number of bytes available to read and to write to
* for the specified ring buffer
*/
static inline void
hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi,
u32 *read, u32 *write)
{
u32 read_loc, write_loc, dsize;
smp_read_barrier_depends();
/* Capture the read/write indices before they changed */
read_loc = rbi->ring_buffer->read_index;
write_loc = rbi->ring_buffer->write_index;
dsize = rbi->ring_datasize;
*write = write_loc >= read_loc ? dsize - (write_loc - read_loc) :
read_loc - write_loc;
*read = dsize - *write;
}
/*
* We use the same version numbering for all Hyper-V modules.
*
* Definition of versioning is as follows;
*
* Major Number Changes for these scenarios;
* 1. When a new version of Windows Hyper-V
* is released.
* 2. A Major change has occurred in the
* Linux IC's.
* (For example the merge for the first time
* into the kernel) Every time the Major Number
* changes, the Revision number is reset to 0.
* Minor Number Changes when new functionality is added
* to the Linux IC's that is not a bug fix.
*
* 3.1 - Added completed hv_utils driver. Shutdown/Heartbeat/Timesync
*/
#define HV_DRV_VERSION "3.1"
/*
* A revision number of vmbus that is used for ensuring both ends on a
* partition are using compatible versions.
*/
#define VMBUS_REVISION_NUMBER 13
/* Make maximum size of pipe payload of 16K */
#define MAX_PIPE_DATA_PAYLOAD (sizeof(u8) * 16384)
/* Define PipeMode values. */
#define VMBUS_PIPE_TYPE_BYTE 0x00000000
#define VMBUS_PIPE_TYPE_MESSAGE 0x00000004
/* The size of the user defined data buffer for non-pipe offers. */
#define MAX_USER_DEFINED_BYTES 120
/* The size of the user defined data buffer for pipe offers. */
#define MAX_PIPE_USER_DEFINED_BYTES 116
/*
* At the center of the Channel Management library is the Channel Offer. This
* struct contains the fundamental information about an offer.
*/
struct vmbus_channel_offer {
uuid_le if_type;
uuid_le if_instance;
u64 int_latency; /* in 100ns units */
u32 if_revision;
u32 server_ctx_size; /* in bytes */
u16 chn_flags;
u16 mmio_megabytes; /* in bytes * 1024 * 1024 */
union {
/* Non-pipes: The user has MAX_USER_DEFINED_BYTES bytes. */
struct {
unsigned char user_def[MAX_USER_DEFINED_BYTES];
} std;
/*
* Pipes:
* The following sructure is an integrated pipe protocol, which
* is implemented on top of standard user-defined data. Pipe
* clients have MAX_PIPE_USER_DEFINED_BYTES left for their own
* use.
*/
struct {
u32 pipe_mode;
unsigned char user_def[MAX_PIPE_USER_DEFINED_BYTES];
} pipe;
} u;
u32 padding;
} __packed;
/* Server Flags */
#define VMBUS_CHANNEL_ENUMERATE_DEVICE_INTERFACE 1
#define VMBUS_CHANNEL_SERVER_SUPPORTS_TRANSFER_PAGES 2
#define VMBUS_CHANNEL_SERVER_SUPPORTS_GPADLS 4
#define VMBUS_CHANNEL_NAMED_PIPE_MODE 0x10
#define VMBUS_CHANNEL_LOOPBACK_OFFER 0x100
#define VMBUS_CHANNEL_PARENT_OFFER 0x200
#define VMBUS_CHANNEL_REQUEST_MONITORED_NOTIFICATION 0x400
struct vmpacket_descriptor {
u16 type;
u16 offset8;
u16 len8;
u16 flags;
u64 trans_id;
} __packed;
struct vmpacket_header {
u32 prev_pkt_start_offset;
struct vmpacket_descriptor descriptor;
} __packed;
struct vmtransfer_page_range {
u32 byte_count;
u32 byte_offset;
} __packed;
struct vmtransfer_page_packet_header {
struct vmpacket_descriptor d;
u16 xfer_pageset_id;
u8 sender_owns_set;
u8 reserved;
u32 range_cnt;
struct vmtransfer_page_range ranges[1];
} __packed;
struct vmgpadl_packet_header {
struct vmpacket_descriptor d;
u32 gpadl;
u32 reserved;
} __packed;
struct vmadd_remove_transfer_page_set {
struct vmpacket_descriptor d;
u32 gpadl;
u16 xfer_pageset_id;
u16 reserved;
} __packed;
/*
* This structure defines a range in guest physical space that can be made to
* look virtually contiguous.
*/
struct gpa_range {
u32 byte_count;
u32 byte_offset;
u64 pfn_array[0];
};
/*
* This is the format for an Establish Gpadl packet, which contains a handle by
* which this GPADL will be known and a set of GPA ranges associated with it.
* This can be converted to a MDL by the guest OS. If there are multiple GPA
* ranges, then the resulting MDL will be "chained," representing multiple VA
* ranges.
*/
struct vmestablish_gpadl {
struct vmpacket_descriptor d;
u32 gpadl;
u32 range_cnt;
struct gpa_range range[1];
} __packed;
/*
* This is the format for a Teardown Gpadl packet, which indicates that the
* GPADL handle in the Establish Gpadl packet will never be referenced again.
*/
struct vmteardown_gpadl {
struct vmpacket_descriptor d;
u32 gpadl;
u32 reserved; /* for alignment to a 8-byte boundary */
} __packed;
/*
* This is the format for a GPA-Direct packet, which contains a set of GPA
* ranges, in addition to commands and/or data.
*/
struct vmdata_gpa_direct {
struct vmpacket_descriptor d;
u32 reserved;
u32 range_cnt;
struct gpa_range range[1];
} __packed;
/* This is the format for a Additional Data Packet. */
struct vmadditional_data {
struct vmpacket_descriptor d;
u64 total_bytes;
u32 offset;
u32 byte_cnt;
unsigned char data[1];
} __packed;
union vmpacket_largest_possible_header {
struct vmpacket_descriptor simple_hdr;
struct vmtransfer_page_packet_header xfer_page_hdr;
struct vmgpadl_packet_header gpadl_hdr;
struct vmadd_remove_transfer_page_set add_rm_xfer_page_hdr;
struct vmestablish_gpadl establish_gpadl_hdr;
struct vmteardown_gpadl teardown_gpadl_hdr;
struct vmdata_gpa_direct data_gpa_direct_hdr;
};
#define VMPACKET_DATA_START_ADDRESS(__packet) \
(void *)(((unsigned char *)__packet) + \
((struct vmpacket_descriptor)__packet)->offset8 * 8)
#define VMPACKET_DATA_LENGTH(__packet) \
((((struct vmpacket_descriptor)__packet)->len8 - \
((struct vmpacket_descriptor)__packet)->offset8) * 8)
#define VMPACKET_TRANSFER_MODE(__packet) \
(((struct IMPACT)__packet)->type)
enum vmbus_packet_type {
VM_PKT_INVALID = 0x0,
VM_PKT_SYNCH = 0x1,
VM_PKT_ADD_XFER_PAGESET = 0x2,
VM_PKT_RM_XFER_PAGESET = 0x3,
VM_PKT_ESTABLISH_GPADL = 0x4,
VM_PKT_TEARDOWN_GPADL = 0x5,
VM_PKT_DATA_INBAND = 0x6,
VM_PKT_DATA_USING_XFER_PAGES = 0x7,
VM_PKT_DATA_USING_GPADL = 0x8,
VM_PKT_DATA_USING_GPA_DIRECT = 0x9,
VM_PKT_CANCEL_REQUEST = 0xa,
VM_PKT_COMP = 0xb,
VM_PKT_DATA_USING_ADDITIONAL_PKT = 0xc,
VM_PKT_ADDITIONAL_DATA = 0xd
};
#define VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1
/* Version 1 messages */
enum vmbus_channel_message_type {
CHANNELMSG_INVALID = 0,
CHANNELMSG_OFFERCHANNEL = 1,
CHANNELMSG_RESCIND_CHANNELOFFER = 2,
CHANNELMSG_REQUESTOFFERS = 3,
CHANNELMSG_ALLOFFERS_DELIVERED = 4,
CHANNELMSG_OPENCHANNEL = 5,
CHANNELMSG_OPENCHANNEL_RESULT = 6,
CHANNELMSG_CLOSECHANNEL = 7,
CHANNELMSG_GPADL_HEADER = 8,
CHANNELMSG_GPADL_BODY = 9,
CHANNELMSG_GPADL_CREATED = 10,
CHANNELMSG_GPADL_TEARDOWN = 11,
CHANNELMSG_GPADL_TORNDOWN = 12,
CHANNELMSG_RELID_RELEASED = 13,
CHANNELMSG_INITIATE_CONTACT = 14,
CHANNELMSG_VERSION_RESPONSE = 15,
CHANNELMSG_UNLOAD = 16,
#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
CHANNELMSG_VIEWRANGE_ADD = 17,
CHANNELMSG_VIEWRANGE_REMOVE = 18,
#endif
CHANNELMSG_COUNT
};
struct vmbus_channel_message_header {
enum vmbus_channel_message_type msgtype;
u32 padding;
} __packed;
/* Query VMBus Version parameters */
struct vmbus_channel_query_vmbus_version {
struct vmbus_channel_message_header header;
u32 version;
} __packed;
/* VMBus Version Supported parameters */
struct vmbus_channel_version_supported {
struct vmbus_channel_message_header header;
u8 version_supported;
} __packed;
/* Offer Channel parameters */
struct vmbus_channel_offer_channel {
struct vmbus_channel_message_header header;
struct vmbus_channel_offer offer;
u32 child_relid;
u8 monitorid;
u8 monitor_allocated;
} __packed;
/* Rescind Offer parameters */
struct vmbus_channel_rescind_offer {
struct vmbus_channel_message_header header;
u32 child_relid;
} __packed;
/*
* Request Offer -- no parameters, SynIC message contains the partition ID
* Set Snoop -- no parameters, SynIC message contains the partition ID
* Clear Snoop -- no parameters, SynIC message contains the partition ID
* All Offers Delivered -- no parameters, SynIC message contains the partition
* ID
* Flush Client -- no parameters, SynIC message contains the partition ID
*/
/* Open Channel parameters */
struct vmbus_channel_open_channel {
struct vmbus_channel_message_header header;
/* Identifies the specific VMBus channel that is being opened. */
u32 child_relid;
/* ID making a particular open request at a channel offer unique. */
u32 openid;
/* GPADL for the channel's ring buffer. */
u32 ringbuffer_gpadlhandle;
/* GPADL for the channel's server context save area. */
u32 server_contextarea_gpadlhandle;
/*
* The upstream ring buffer begins at offset zero in the memory
* described by RingBufferGpadlHandle. The downstream ring buffer
* follows it at this offset (in pages).
*/
u32 downstream_ringbuffer_pageoffset;
/* User-specific data to be passed along to the server endpoint. */
unsigned char userdata[MAX_USER_DEFINED_BYTES];
} __packed;
/* Open Channel Result parameters */
struct vmbus_channel_open_result {
struct vmbus_channel_message_header header;
u32 child_relid;
u32 openid;
u32 status;
} __packed;
/* Close channel parameters; */
struct vmbus_channel_close_channel {
struct vmbus_channel_message_header header;
u32 child_relid;
} __packed;
/* Channel Message GPADL */
#define GPADL_TYPE_RING_BUFFER 1
#define GPADL_TYPE_SERVER_SAVE_AREA 2
#define GPADL_TYPE_TRANSACTION 8
/*
* The number of PFNs in a GPADL message is defined by the number of
* pages that would be spanned by ByteCount and ByteOffset. If the
* implied number of PFNs won't fit in this packet, there will be a
* follow-up packet that contains more.
*/
struct vmbus_channel_gpadl_header {
struct vmbus_channel_message_header header;
u32 child_relid;
u32 gpadl;
u16 range_buflen;
u16 rangecount;
struct gpa_range range[0];
} __packed;
/* This is the followup packet that contains more PFNs. */
struct vmbus_channel_gpadl_body {
struct vmbus_channel_message_header header;
u32 msgnumber;
u32 gpadl;
u64 pfn[0];
} __packed;
struct vmbus_channel_gpadl_created {
struct vmbus_channel_message_header header;
u32 child_relid;
u32 gpadl;
u32 creation_status;
} __packed;
struct vmbus_channel_gpadl_teardown {
struct vmbus_channel_message_header header;
u32 child_relid;
u32 gpadl;
} __packed;
struct vmbus_channel_gpadl_torndown {
struct vmbus_channel_message_header header;
u32 gpadl;
} __packed;
#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
struct vmbus_channel_view_range_add {
struct vmbus_channel_message_header header;
PHYSICAL_ADDRESS viewrange_base;
u64 viewrange_length;
u32 child_relid;
} __packed;
struct vmbus_channel_view_range_remove {
struct vmbus_channel_message_header header;
PHYSICAL_ADDRESS viewrange_base;
u32 child_relid;
} __packed;
#endif
struct vmbus_channel_relid_released {
struct vmbus_channel_message_header header;
u32 child_relid;
} __packed;
struct vmbus_channel_initiate_contact {
struct vmbus_channel_message_header header;
u32 vmbus_version_requested;
u32 padding2;
u64 interrupt_page;
u64 monitor_page1;
u64 monitor_page2;
} __packed;
struct vmbus_channel_version_response {
struct vmbus_channel_message_header header;
u8 version_supported;
} __packed;
enum vmbus_channel_state {
CHANNEL_OFFER_STATE,
CHANNEL_OPENING_STATE,
CHANNEL_OPEN_STATE,
};
struct vmbus_channel_debug_info {
u32 relid;
enum vmbus_channel_state state;
uuid_le interfacetype;
uuid_le interface_instance;
u32 monitorid;
u32 servermonitor_pending;
u32 servermonitor_latency;
u32 servermonitor_connectionid;
u32 clientmonitor_pending;
u32 clientmonitor_latency;
u32 clientmonitor_connectionid;
struct hv_ring_buffer_debug_info inbound;
struct hv_ring_buffer_debug_info outbound;
};
/*
* Represents each channel msg on the vmbus connection This is a
* variable-size data structure depending on the msg type itself
*/
struct vmbus_channel_msginfo {
/* Bookkeeping stuff */
struct list_head msglistentry;
/* So far, this is only used to handle gpadl body message */
struct list_head submsglist;
/* Synchronize the request/response if needed */
struct completion waitevent;
union {
struct vmbus_channel_version_supported version_supported;
struct vmbus_channel_open_result open_result;
struct vmbus_channel_gpadl_torndown gpadl_torndown;
struct vmbus_channel_gpadl_created gpadl_created;
struct vmbus_channel_version_response version_response;
} response;
u32 msgsize;
/*
* The channel message that goes out on the "wire".
* It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header
*/
unsigned char msg[0];
};
struct vmbus_close_msg {
struct vmbus_channel_msginfo info;
struct vmbus_channel_close_channel msg;
};
struct vmbus_channel {
struct list_head listentry;
struct hv_device *device_obj;
struct work_struct work;
enum vmbus_channel_state state;
struct vmbus_channel_offer_channel offermsg;
/*
* These are based on the OfferMsg.MonitorId.
* Save it here for easy access.
*/
u8 monitor_grp;
u8 monitor_bit;
u32 ringbuffer_gpadlhandle;
/* Allocated memory for ring buffer */
void *ringbuffer_pages;
u32 ringbuffer_pagecount;
struct hv_ring_buffer_info outbound; /* send to parent */
struct hv_ring_buffer_info inbound; /* receive from parent */
spinlock_t inbound_lock;
struct workqueue_struct *controlwq;
struct vmbus_close_msg close_msg;
/* Channel callback are invoked in this workqueue context */
/* HANDLE dataWorkQueue; */
void (*onchannel_callback)(void *context);
void *channel_callback_context;
};
void vmbus_onmessage(void *context);
int vmbus_request_offers(void);
/* The format must be the same as struct vmdata_gpa_direct */
struct vmbus_channel_packet_page_buffer {
u16 type;
u16 dataoffset8;
u16 length8;
u16 flags;
u64 transactionid;
u32 reserved;
u32 rangecount;
struct hv_page_buffer range[MAX_PAGE_BUFFER_COUNT];
} __packed;
/* The format must be the same as struct vmdata_gpa_direct */
struct vmbus_channel_packet_multipage_buffer {
u16 type;
u16 dataoffset8;
u16 length8;
u16 flags;
u64 transactionid;
u32 reserved;
u32 rangecount; /* Always 1 in this case */
struct hv_multipage_buffer range;
} __packed;
extern int vmbus_open(struct vmbus_channel *channel,
u32 send_ringbuffersize,
u32 recv_ringbuffersize,
void *userdata,
u32 userdatalen,
void(*onchannel_callback)(void *context),
void *context);
extern void vmbus_close(struct vmbus_channel *channel);
extern int vmbus_sendpacket(struct vmbus_channel *channel,
const void *buffer,
u32 bufferLen,
u64 requestid,
enum vmbus_packet_type type,
u32 flags);
extern int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel,
struct hv_page_buffer pagebuffers[],
u32 pagecount,
void *buffer,
u32 bufferlen,
u64 requestid);
extern int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel,
struct hv_multipage_buffer *mpb,
void *buffer,
u32 bufferlen,
u64 requestid);
extern int vmbus_establish_gpadl(struct vmbus_channel *channel,
void *kbuffer,
u32 size,
u32 *gpadl_handle);
extern int vmbus_teardown_gpadl(struct vmbus_channel *channel,
u32 gpadl_handle);
extern int vmbus_recvpacket(struct vmbus_channel *channel,
void *buffer,
u32 bufferlen,
u32 *buffer_actual_len,
u64 *requestid);
extern int vmbus_recvpacket_raw(struct vmbus_channel *channel,
void *buffer,
u32 bufferlen,
u32 *buffer_actual_len,
u64 *requestid);
extern void vmbus_get_debug_info(struct vmbus_channel *channel,
struct vmbus_channel_debug_info *debug);
extern void vmbus_ontimer(unsigned long data);
struct hv_dev_port_info {
u32 int_mask;
u32 read_idx;
u32 write_idx;
u32 bytes_avail_toread;
u32 bytes_avail_towrite;
};
/* Base driver object */
struct hv_driver {
const char *name;
/* the device type supported by this driver */
uuid_le dev_type;
const struct hv_vmbus_device_id *id_table;
struct device_driver driver;
int (*probe)(struct hv_device *, const struct hv_vmbus_device_id *);
int (*remove)(struct hv_device *);
void (*shutdown)(struct hv_device *);
};
/* Base device object */
struct hv_device {
/* the device type id of this device */
uuid_le dev_type;
/* the device instance id of this device */
uuid_le dev_instance;
struct device device;
struct vmbus_channel *channel;
};
static inline struct hv_device *device_to_hv_device(struct device *d)
{
return container_of(d, struct hv_device, device);
}
static inline struct hv_driver *drv_to_hv_drv(struct device_driver *d)
{
return container_of(d, struct hv_driver, driver);
}
static inline void hv_set_drvdata(struct hv_device *dev, void *data)
{
dev_set_drvdata(&dev->device, data);
}
static inline void *hv_get_drvdata(struct hv_device *dev)
{
return dev_get_drvdata(&dev->device);
}
/* Vmbus interface */
#define vmbus_driver_register(driver) \
__vmbus_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
int __must_check __vmbus_driver_register(struct hv_driver *hv_driver,
struct module *owner,
const char *mod_name);
void vmbus_driver_unregister(struct hv_driver *hv_driver);
/**
* VMBUS_DEVICE - macro used to describe a specific hyperv vmbus device
*
* This macro is used to create a struct hv_vmbus_device_id that matches a
* specific device.
*/
#define VMBUS_DEVICE(g0, g1, g2, g3, g4, g5, g6, g7, \
g8, g9, ga, gb, gc, gd, ge, gf) \
.guid = { g0, g1, g2, g3, g4, g5, g6, g7, \
g8, g9, ga, gb, gc, gd, ge, gf },
/*
* Common header for Hyper-V ICs
*/
#define ICMSGTYPE_NEGOTIATE 0
#define ICMSGTYPE_HEARTBEAT 1
#define ICMSGTYPE_KVPEXCHANGE 2
#define ICMSGTYPE_SHUTDOWN 3
#define ICMSGTYPE_TIMESYNC 4
#define ICMSGTYPE_VSS 5
#define ICMSGHDRFLAG_TRANSACTION 1
#define ICMSGHDRFLAG_REQUEST 2
#define ICMSGHDRFLAG_RESPONSE 4
/*
* While we want to handle util services as regular devices,
* there is only one instance of each of these services; so
* we statically allocate the service specific state.
*/
struct hv_util_service {
u8 *recv_buffer;
void (*util_cb)(void *);
int (*util_init)(struct hv_util_service *);
void (*util_deinit)(void);
};
struct vmbuspipe_hdr {
u32 flags;
u32 msgsize;
} __packed;
struct ic_version {
u16 major;
u16 minor;
} __packed;
struct icmsg_hdr {
struct ic_version icverframe;
u16 icmsgtype;
struct ic_version icvermsg;
u16 icmsgsize;
u32 status;
u8 ictransaction_id;
u8 icflags;
u8 reserved[2];
} __packed;
struct icmsg_negotiate {
u16 icframe_vercnt;
u16 icmsg_vercnt;
u32 reserved;
struct ic_version icversion_data[1]; /* any size array */
} __packed;
struct shutdown_msg_data {
u32 reason_code;
u32 timeout_seconds;
u32 flags;
u8 display_message[2048];
} __packed;
struct heartbeat_msg_data {
u64 seq_num;
u32 reserved[8];
} __packed;
/* Time Sync IC defs */
#define ICTIMESYNCFLAG_PROBE 0
#define ICTIMESYNCFLAG_SYNC 1
#define ICTIMESYNCFLAG_SAMPLE 2
#ifdef __x86_64__
#define WLTIMEDELTA 116444736000000000L /* in 100ns unit */
#else
#define WLTIMEDELTA 116444736000000000LL
#endif
struct ictimesync_data {
u64 parenttime;
u64 childtime;
u64 roundtriptime;
u8 flags;
} __packed;
struct hyperv_service_callback {
u8 msg_type;
char *log_msg;
uuid_le data;
struct vmbus_channel *channel;
void (*callback) (void *context);
};
#define MAX_SRV_VER 0x7ffffff
extern void vmbus_prep_negotiate_resp(struct icmsg_hdr *,
struct icmsg_negotiate *, u8 *, int,
int);
int hv_kvp_init(struct hv_util_service *);
void hv_kvp_deinit(void);
void hv_kvp_onchannelcallback(void *);
#endif /* __KERNEL__ */
#endif /* _HYPERV_H */
#endif /* _UAPI_HYPERV_H */

194
hyper-v.spec
View File

@ -19,7 +19,13 @@
%define hv_kvp_daemon hv_kvp_daemon
%define hv_vss_daemon hv_vss_daemon
%define hv_fcopy_daemon hv_fcopy_daemon
%define helper_dir /usr/lib/%{name}
%define vmbus_bufring vmbus_bufring
%define hv_fcopy_uio_daemon hv_fcopy_uio_daemon
%define include_uapi_linux_hyperv include_uapi_linux_hyperv
%define chardev_kvp vmbus/hv_kvp
%define chardev_vss vmbus/hv_vss
%define chardev_fcopy vmbus/hv_fcopy
%define helper_dir /usr/lib/%name
Name: hyper-v
ExclusiveArch: %ix86 x86_64 aarch64
@ -30,19 +36,21 @@ BuildRequires: pkgconfig(systemd)
Conflicts: kernel < 4.2
Summary: Microsoft Hyper-V tools
License: GPL-2.0-only
Group: System/Kernel
Supplements: modalias(dmi:*svnMicrosoftCorporation*pnVirtualMachine*rnVirtualMachine*)
Supplements: modalias(pci:v00001414d00005353sv*sd*bc*sc*i*)
URL: http://www.kernel.org
# Arbitrary version number
Version: 8
Version: 9
Release: 0
Source0: hyper-v.lsvmbus.py
Source5: hyper-v.kvptest.ps1.txt
Source7: hyper-v.compare-with-upstream.sh
Source8: hyper-v.tools.hv.vmbus_bufring.h
Source9: hyper-v.include.linux.hyperv.h
Source10: hyper-v.tools.hv.hv_kvp_daemon.c
Source11: hyper-v.tools.hv.vmbus_bufring.c
Source12: hyper-v.tools.hv.hv_vss_daemon.c
Source13: hyper-v.tools.hv.hv_fcopy_uio_daemon.c
Source14: hyper-v.tools.hv.hv_fcopy_daemon.c
Source20: hyper-v.tools.hv.hv_get_dhcp_info.sh
Source21: hyper-v.tools.hv.hv_get_dns_info.sh
@ -56,107 +64,147 @@ This package contains the Microsoft Hyper-V tools.
%prep
%setup -Tc
cp -avL %{S:5} kvptest.ps1.txt
cp -vL %{S:9} %{hv_kvp_daemon}.h
cp -vL %{S:8} %vmbus_bufring.h
cp -vL %{S:9} %include_uapi_linux_hyperv.h
cp -vL %{S:10} .
cp -vL %{S:12} %{hv_vss_daemon}.c
cp -vL %{S:14} %{hv_fcopy_daemon}.c
cp -vL %{S:11} %vmbus_bufring.c
cp -vL %{S:12} %hv_vss_daemon.c
cp -vL %{S:13} %hv_fcopy_uio_daemon.c
cp -vL %{S:14} %hv_fcopy_daemon.c
%patch -P 0 -p1
mv `basename %{S:10}` %{hv_kvp_daemon}.c
mv `basename %{S:10}` %hv_kvp_daemon.c
%build
sed -i~ '/#include <linux.hyperv.h>/d' %{hv_kvp_daemon}.c
sed -i~ '/#include <linux.hyperv.h>/d' %{hv_vss_daemon}.c
sed -i~ '/#include <linux.hyperv.h>/d' %{hv_fcopy_daemon}.c
sed -i~ '/#include <linux.hyperv.h>/d' %hv_kvp_daemon.c
sed -i~ '/#include <linux.hyperv.h>/d' %hv_vss_daemon.c
sed -i~ '/#include <linux.hyperv.h>/d' %hv_fcopy_uio_daemon.c
sed -i~ '/#include <linux.hyperv.h>/d' %hv_fcopy_daemon.c
gcc \
$RPM_OPT_FLAGS \
-Wno-unused-variable \
-Wno-pointer-sign \
-D_GNU_SOURCE \
-g \
%{hv_kvp_daemon}.c \
-include %{hv_kvp_daemon}.h \
%hv_kvp_daemon.c \
-include %include_uapi_linux_hyperv.h \
-DCN_KVP_IDX=0x9 \
-DCN_KVP_VAL=0x1 \
-DKVP_SCRIPTS_PATH= \
-pthread \
-o %{hv_kvp_daemon}
-o %hv_kvp_daemon
gcc \
$RPM_OPT_FLAGS \
-Wno-unused-variable \
-Wno-pointer-sign \
-D_GNU_SOURCE \
-g \
%{hv_vss_daemon}.c \
-include %{hv_kvp_daemon}.h \
%hv_vss_daemon.c \
-include %include_uapi_linux_hyperv.h \
-DCN_VSS_IDX=0xa \
-DCN_VSS_VAL=0x1 \
-o %{hv_vss_daemon}
-o %hv_vss_daemon
gcc \
$RPM_OPT_FLAGS \
-Wno-unused-variable \
-Wno-pointer-sign \
-D_GNU_SOURCE \
-g \
%{hv_fcopy_daemon}.c \
-include %{hv_kvp_daemon}.h \
-o %{hv_fcopy_daemon}
%hv_fcopy_daemon.c \
-include %include_uapi_linux_hyperv.h \
-o %hv_fcopy_daemon
%ifarch %ix86 x86_64
gcc \
$RPM_OPT_FLAGS \
-Wno-unused-variable \
-Wno-pointer-sign \
-Wno-address-of-packed-member \
-D_GNU_SOURCE \
-g \
%vmbus_bufring.c \
%hv_fcopy_uio_daemon.c \
-include %include_uapi_linux_hyperv.h \
-o %hv_fcopy_uio_daemon
%endif
%install
# It is not a callable app anyway, so move it out of the way
bindir=%{helper_dir}/bin
mkdir -p $RPM_BUILD_ROOT${bindir}
mkdir -p $RPM_BUILD_ROOT%{_sbindir}
mkdir -p $RPM_BUILD_ROOT%{helper_dir}/bin
install -m755 %{hv_kvp_daemon} $RPM_BUILD_ROOT${bindir}
install -m755 %{hv_vss_daemon} $RPM_BUILD_ROOT${bindir}
install -m755 %{hv_fcopy_daemon} $RPM_BUILD_ROOT${bindir}
cp -avL %{S:0} $RPM_BUILD_ROOT%{_sbindir}/lsvmbus
chmod 0755 $RPM_BUILD_ROOT%{_sbindir}/lsvmbus
cp -avL %{S:20} $RPM_BUILD_ROOT%{helper_dir}/bin/hv_get_dhcp_info
cp -avL %{S:21} $RPM_BUILD_ROOT%{helper_dir}/bin/hv_get_dns_info
cp -avL %{S:22} $RPM_BUILD_ROOT%{helper_dir}/bin/hv_set_ifconfig
chmod 755 $RPM_BUILD_ROOT%{helper_dir}/bin/*
d=$RPM_BUILD_ROOT%{_unitdir}
bindir=%helper_dir/bin
mkdir -p %buildroot${bindir}
mkdir -p %buildroot%_sbindir
install -m755 %hv_kvp_daemon %buildroot${bindir}
install -m755 %hv_vss_daemon %buildroot${bindir}
install -m755 %hv_fcopy_daemon %buildroot${bindir}
%ifarch %ix86 x86_64
install -m755 %hv_fcopy_uio_daemon %buildroot${bindir}
%endif
cp -avL %{S:0} %buildroot%_sbindir/lsvmbus
chmod 0755 %buildroot%_sbindir/lsvmbus
cp -avL %{S:20} %buildroot${bindir}/hv_get_dhcp_info
cp -avL %{S:21} %buildroot${bindir}/hv_get_dns_info
cp -avL %{S:22} %buildroot${bindir}/hv_set_ifconfig
chmod 755 %buildroot${bindir}/*
d=%buildroot%_unitdir
mkdir -vp ${d}
#
tee ${d}/%{hv_kvp_daemon}.service <<EOF
# started via %{_udevrulesdir}/%{hv_kvp_daemon}.rules
tee ${d}/%hv_kvp_daemon.service <<EOF
# started via %_udevrulesdir/%name.rules
[Unit]
Description=Hyper-V KVP Daemon
After=local-fs.target
ConditionVirtualization=microsoft
ConditionPathExists=/dev/%chardev_kvp
[Service]
Environment="PATH=%{helper_dir}/bin:/usr/sbin:/usr/bin:/sbin:/bin"
ExecStart=${bindir}/%{hv_kvp_daemon} --no-daemon
Environment="PATH=${bindir}:/usr/sbin:/usr/bin:/sbin:/bin"
ExecStart=${bindir}/%hv_kvp_daemon --no-daemon
Restart=on-failure
[Install]
WantedBy=default.target
EOF
#
tee ${d}/%{hv_vss_daemon}.service <<EOF
# started via %{_udevrulesdir}/%{hv_vss_daemon}.rules
tee ${d}/%hv_vss_daemon.service <<EOF
# started via %_udevrulesdir/%name.rules
[Unit]
Description=Hyper-V VSS Daemon
ConditionVirtualization=microsoft
ConditionPathExists=/dev/%chardev_vss
[Service]
ExecStart=${bindir}/%{hv_vss_daemon} --no-daemon
ExecStart=${bindir}/%hv_vss_daemon --no-daemon
Restart=on-failure
[Install]
WantedBy=default.target
EOF
#
tee ${d}/%{hv_fcopy_daemon}.service <<EOF
# started via %{_udevrulesdir}/%{hv_fcopy_daemon}.rules
tee ${d}/%hv_fcopy_daemon.service <<EOF
# started via %_udevrulesdir/%name.rules
[Unit]
Description=Hyper-V host to guest file copy daemon
ConditionVirtualization=microsoft
ConditionPathExists=/dev/%chardev_fcopy
[Service]
ExecStart=${bindir}/%{hv_fcopy_daemon} --no-daemon
ExecStart=${bindir}/%hv_fcopy_daemon --no-daemon
Restart=on-failure
[Install]
WantedBy=default.target
EOF
#
tee ${d}/%hv_fcopy_uio_daemon.service <<EOF
# started via %_udevrulesdir/%name.rules
[Unit]
Description=Hyper-V host to guest UIO file copy daemon
ConditionVirtualization=microsoft
ConditionPathExists=/sys/bus/vmbus/drivers/uio_hv_generic/new_id
ConditionPathExists=!/dev/%chardev_fcopy
[Service]
ExecStartPre=/bin/sh -c 'set -e;echo 34d14be3-dee4-41c8-9ae7-6b174977c192 > /sys/bus/vmbus/drivers/uio_hv_generic/new_id'
ExecStart=${bindir}/%hv_fcopy_uio_daemon --no-daemon
Restart=on-failure
[Install]
@ -165,53 +213,61 @@ EOF
#
#
#
d=$RPM_BUILD_ROOT%{_udevrulesdir}
d=%buildroot%_udevrulesdir
mkdir -vp ${d}
tee ${d}/%{hv_kvp_daemon}.rules <<EOF
ACTION=="add", KERNEL=="vmbus/hv_kvp", TAG+="systemd", ENV{SYSTEMD_WANTS}+="%{hv_kvp_daemon}.service"
EOF
tee ${d}/%{hv_vss_daemon}.rules <<EOF
ACTION=="add", KERNEL=="vmbus/hv_vss", TAG+="systemd", ENV{SYSTEMD_WANTS}+="%{hv_vss_daemon}.service"
EOF
tee ${d}/%{hv_fcopy_daemon}.rules <<EOF
ACTION=="add", KERNEL=="vmbus/hv_fcopy", TAG+="systemd", ENV{SYSTEMD_WANTS}+="%{hv_fcopy_daemon}.service"
tee ${d}/%name.rules <<EOF
ACTION=="add", KERNEL=="%chardev_kvp", TAG+="systemd", ENV{SYSTEMD_WANTS}+="%hv_kvp_daemon.service"
ACTION=="add", KERNEL=="%chardev_vss", TAG+="systemd", ENV{SYSTEMD_WANTS}+="%hv_vss_daemon.service"
ACTION=="add", KERNEL=="%chardev_fcopy", TAG+="systemd", ENV{SYSTEMD_WANTS}+="%hv_fcopy_daemon.service"
ACTION=="add", SUBSYSTEM=="vmbus", ATTRS{class_id}=="{34d14be3-dee4-41c8-9ae7-6b174977c192}", RUN{builtin}+="kmod load uio_hv_generic", TAG+="systemd", ENV{SYSTEMD_WANTS}+="%hv_fcopy_uio_daemon.service"
EOF
#
#
helper=inst_sys.sh
tee $RPM_BUILD_ROOT${bindir}/${helper} <<EOF
tee %buildroot${bindir}/${helper} <<'_EOF_'
#!/bin/bash
# Starting daemons via RUN== in udev rules is not supported.
# In inst-sys systemd is not used, so start all daemons manually.
bindir=%helper_dir/bin
declare -a helpers
test -c /dev/%chardev_kvp && helpers+=(%hv_kvp_daemon)
test -c /dev/%chardev_vss && helpers+=(%hv_vss_daemon)
if test -c /dev/%chardev_fcopy
then
helpers+=(%hv_fcopy_daemon)
else
modprobe -v uio_hv_generic
if test -f /sys/bus/vmbus/drivers/uio_hv_generic/new_id
then
echo '34d14be3-dee4-41c8-9ae7-6b174977c192' > /sys/bus/vmbus/drivers/uio_hv_generic/new_id
helpers+=(%hv_fcopy_uio_daemon)
fi
fi
if test -d /sys/bus/vmbus/devices
then
export PATH=${bindir}:\$PATH
export PATH=${bindir}:$PATH
echo -n "Starting hyper-v helpers:"
for i in \
%{hv_kvp_daemon} \
%{hv_vss_daemon} \
%{hv_fcopy_daemon}
for i in "${helpers[@]}"
do
if mkdir /run/\$i
if mkdir /run/$i
then
echo -n " \$i"
\$i < /dev/null &
echo -n " $i"
$i < /dev/null &
fi
done
echo " ... done"
fi
EOF
chmod 755 $RPM_BUILD_ROOT${bindir}/${helper}
_EOF_
chmod 755 %buildroot${bindir}/${helper}
#
%python3_fix_shebang
%?python3_fix_shebang
%files
%doc kvptest.ps1.txt
%{_unitdir}
%dir /usr/lib/udev
%{_udevrulesdir}
%{_sbindir}/*
%{helper_dir}
%_unitdir/*
%_udevrulesdir/*
%_sbindir/*
%helper_dir
%pre
# hv_kvp_daemon in SLES11 SP2 stored temporary state files in /var/opt

497
hyper-v.tools.hv.hv_fcopy_uio_daemon.c Normal file
View File

@ -0,0 +1,497 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* An implementation of host to guest copy functionality for Linux.
*
* Copyright (C) 2023, Microsoft, Inc.
*
* Author : K. Y. Srinivasan <kys@microsoft.com>
* Author : Saurabh Sengar <ssengar@microsoft.com>
*
*/
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <locale.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <wchar.h>
#include <sys/stat.h>
#include <linux/hyperv.h>
#include <linux/limits.h>
#include "vmbus_bufring.h"
#define ICMSGTYPE_NEGOTIATE 0
#define ICMSGTYPE_FCOPY 7
#define WIN8_SRV_MAJOR 1
#define WIN8_SRV_MINOR 1
#define WIN8_SRV_VERSION (WIN8_SRV_MAJOR << 16 | WIN8_SRV_MINOR)
#define MAX_FOLDER_NAME 15
#define MAX_PATH_LEN 15
#define FCOPY_UIO "/sys/bus/vmbus/devices/eb765408-105f-49b6-b4aa-c123b64d17d4/uio"
#define FCOPY_VER_COUNT 1
static const int fcopy_versions[] = {
WIN8_SRV_VERSION
};
#define FW_VER_COUNT 1
static const int fw_versions[] = {
UTIL_FW_VERSION
};
#define HV_RING_SIZE 0x4000 /* 16KB ring buffer size */
unsigned char desc[HV_RING_SIZE];
static int target_fd;
static char target_fname[PATH_MAX];
static unsigned long long filesize;
static int hv_fcopy_create_file(char *file_name, char *path_name, __u32 flags)
{
int error = HV_E_FAIL;
char *q, *p;
filesize = 0;
p = path_name;
snprintf(target_fname, sizeof(target_fname), "%s/%s",
path_name, file_name);
/*
* Check to see if the path is already in place; if not,
* create if required.
*/
while ((q = strchr(p, '/')) != NULL) {
if (q == p) {
p++;
continue;
}
*q = '\0';
if (access(path_name, F_OK)) {
if (flags & CREATE_PATH) {
if (mkdir(path_name, 0755)) {
syslog(LOG_ERR, "Failed to create %s",
path_name);
goto done;
}
} else {
syslog(LOG_ERR, "Invalid path: %s", path_name);
goto done;
}
}
p = q + 1;
*q = '/';
}
if (!access(target_fname, F_OK)) {
syslog(LOG_INFO, "File: %s exists", target_fname);
if (!(flags & OVER_WRITE)) {
error = HV_ERROR_ALREADY_EXISTS;
goto done;
}
}
target_fd = open(target_fname,
O_RDWR | O_CREAT | O_TRUNC | O_CLOEXEC, 0744);
if (target_fd == -1) {
syslog(LOG_INFO, "Open Failed: %s", strerror(errno));
goto done;
}
error = 0;
done:
if (error)
target_fname[0] = '\0';
return error;
}
/* copy the data into the file */
static int hv_copy_data(struct hv_do_fcopy *cpmsg)
{
ssize_t len;
int ret = 0;
len = pwrite(target_fd, cpmsg->data, cpmsg->size, cpmsg->offset);
filesize += cpmsg->size;
if (len != cpmsg->size) {
switch (errno) {
case ENOSPC:
ret = HV_ERROR_DISK_FULL;
break;
default:
ret = HV_E_FAIL;
break;
}
syslog(LOG_ERR, "pwrite failed to write %llu bytes: %ld (%s)",
filesize, (long)len, strerror(errno));
}
return ret;
}
static int hv_copy_finished(void)
{
close(target_fd);
target_fname[0] = '\0';
return 0;
}
static void print_usage(char *argv[])
{
fprintf(stderr, "Usage: %s [options]\n"
"Options are:\n"
" -n, --no-daemon stay in foreground, don't daemonize\n"
" -h, --help print this help\n", argv[0]);
}
static bool vmbus_prep_negotiate_resp(struct icmsg_hdr *icmsghdrp, unsigned char *buf,
unsigned int buflen, const int *fw_version, int fw_vercnt,
const int *srv_version, int srv_vercnt,
int *nego_fw_version, int *nego_srv_version)
{
int icframe_major, icframe_minor;
int icmsg_major, icmsg_minor;
int fw_major, fw_minor;
int srv_major, srv_minor;
int i, j;
bool found_match = false;
struct icmsg_negotiate *negop;
/* Check that there's enough space for icframe_vercnt, icmsg_vercnt */
if (buflen < ICMSG_HDR + offsetof(struct icmsg_negotiate, reserved)) {
syslog(LOG_ERR, "Invalid icmsg negotiate");
return false;
}
icmsghdrp->icmsgsize = 0x10;
negop = (struct icmsg_negotiate *)&buf[ICMSG_HDR];
icframe_major = negop->icframe_vercnt;
icframe_minor = 0;
icmsg_major = negop->icmsg_vercnt;
icmsg_minor = 0;
/* Validate negop packet */
if (icframe_major > IC_VERSION_NEGOTIATION_MAX_VER_COUNT ||
icmsg_major > IC_VERSION_NEGOTIATION_MAX_VER_COUNT ||
ICMSG_NEGOTIATE_PKT_SIZE(icframe_major, icmsg_major) > buflen) {
syslog(LOG_ERR, "Invalid icmsg negotiate - icframe_major: %u, icmsg_major: %u\n",
icframe_major, icmsg_major);
goto fw_error;
}
/*
* Select the framework version number we will
* support.
*/
for (i = 0; i < fw_vercnt; i++) {
fw_major = (fw_version[i] >> 16);
fw_minor = (fw_version[i] & 0xFFFF);
for (j = 0; j < negop->icframe_vercnt; j++) {
if (negop->icversion_data[j].major == fw_major &&
negop->icversion_data[j].minor == fw_minor) {
icframe_major = negop->icversion_data[j].major;
icframe_minor = negop->icversion_data[j].minor;
found_match = true;
break;
}
}
if (found_match)
break;
}
if (!found_match)
goto fw_error;
found_match = false;
for (i = 0; i < srv_vercnt; i++) {
srv_major = (srv_version[i] >> 16);
srv_minor = (srv_version[i] & 0xFFFF);
for (j = negop->icframe_vercnt;
(j < negop->icframe_vercnt + negop->icmsg_vercnt);
j++) {
if (negop->icversion_data[j].major == srv_major &&
negop->icversion_data[j].minor == srv_minor) {
icmsg_major = negop->icversion_data[j].major;
icmsg_minor = negop->icversion_data[j].minor;
found_match = true;
break;
}
}
if (found_match)
break;
}
/*
* Respond with the framework and service
* version numbers we can support.