CN103645945A - Automatic probing and drive loading method of virtual network interface card - Google Patents
Automatic probing and drive loading method of virtual network interface card Download PDFInfo
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- CN103645945A CN103645945A CN201310542135.6A CN201310542135A CN103645945A CN 103645945 A CN103645945 A CN 103645945A CN 201310542135 A CN201310542135 A CN 201310542135A CN 103645945 A CN103645945 A CN 103645945A
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Abstract
The embodiment of the invention provides an automatic probing and drive loading method of a virtual network interface card. Through the method, automatic probing and drive loading of the virtual network interface card in a user state are achieved. The automatic probing and drive loading method of the virtual network interface card is applied to a virtual machine provided with a self-programmed operating system, and comprises the following steps that an inner core of the operating system is configured, and driving information of the network interface card is programmed into the inner core to generate a novel inner core; the novel inner core is programmed, an inner core mirror image document is generated, and a starting item of the inner core is corrected to guide to the inner core mirror image document to start; the inner core starts an initialization phase, and the starting operation is finished after the information of the virtual network interface card is probed and stored; the user state obtains the information, probed by the inner core, of the virtual network interface card in the starting process of the inner core mirror image document; the user state initializes the virtual network interface card and loads a drive according to the information of the virtual network interface card and the driving information of the network interface card.
Description
Technical field
The present invention relates to field of computer technology, be specifically related to a kind of automatic detection and drive load method of Microsoft Loopback Adapter.
Technical background
Operating system is to control hardware device by various drivers, and it is various equipment for user has shielded, and driving hardware is the most basic function of operating system, and unified mode of operation is provided.While checking the document on screen as us, do not spend pipe and use on earth NVIDIA chip, or the display card of ATI chip, only need know after input command, the word needing is just presented on screen.Hardware drive program is the most basic ingredient of operating system, also occupies higher ratio in linux kernel source program.
Kernel loads drives packet sending and receiving meeting along with a large amount of interruptions of the large stroke initiation of message consume certain cpu resource (particularly X86 architecture); As Microsoft Loopback Adapter, drive, the not direct and true network interface card of the digital received and sent of driver is come into contacts with, but deliver by user's state, this just needs the mutual of data between kernel state and user's state, the kernel state of (SuSE) Linux OS is also the reason that bag treatment facility cannot make full use of multi-core CPU to the performance of the data copy loss of user's state, particularly, the in the situation that of the virtual a plurality of PC of VMware, the shortcoming that kernel-driven loads will be more obvious.
Summary of the invention
The invention provides a kind of automatic detection and drive load method of Microsoft Loopback Adapter, the processing of the automatic detection of Microsoft Loopback Adapter and drive load and network data message is all placed on to user's state, realized automatic detection and drive load at user's state Microsoft Loopback Adapter.
The automatic detection of a kind of Microsoft Loopback Adapter that the embodiment of the present invention provides and drive load method, be applied to be provided with on the virtual machine of the operating system compiling, comprise: configure the kernel of described operating system, network interface card activation bit is compiled into described kernel, generate new kernel; Compile described new kernel and generate kernel mirror image file, the startup item of revising described kernel guides described kernel mirror image file start; Kernel starts initial phase, and stops after surveying and preserve Microsoft Loopback Adapter information; In described kernel mirror image file start process, user's state is obtained the Microsoft Loopback Adapter information that described kernel detects; User's state is according to described Microsoft Loopback Adapter information and described network interface card activation bit initialization Microsoft Loopback Adapter load driver.
Wherein, the kernel of the described operating system of described configuration, network interface card activation bit is compiled into described kernel, generate new kernel, comprise: the configuration file of revising described kernel, click network device driver option, make described recompile kernel network interface card drive part code and support described virtual machine disk drive type; Revise the output configuration of described operating system, described operation system information is shown by serial port terminal modifications to be that the console terminal that described virtual machine is used shows.
Wherein, before kernel starts initial phase, further comprise: described operating system application bulk contiguous memory; And shine upon by operating system memory, by the physical address map of internal memory, be user's state address.
Wherein, described kernel starts initial phase, and stop after surveying and preserve Microsoft Loopback Adapter information, comprise: PCI drive load calls unified interface and registers each driving, all devices in scanning pci bus, the match condition according to driving with the identification information of equipment, after judging that driving is mated with equipment, the Microsoft Loopback Adapter information that preservation detects, and stop.
Wherein, described in described kernel mirror image file start process, user's state is obtained the Microsoft Loopback Adapter information that described kernel detects and is comprised: user's state is accessed kernel state by interface function, obtains the Microsoft Loopback Adapter information that kernel detects.
Wherein, the driving type of described Microsoft Loopback Adapter packets of information purse rope Card Type, Microsoft Loopback Adapter number, correspondence and Microsoft Loopback Adapter are as the facility information of PCI equipment.
Wherein, described Microsoft Loopback Adapter, as the facility information of PCI equipment, comprising: the corresponding bus number of Microsoft Loopback Adapter equipment, device numbering and function numbering.
Wherein, described user's state comprises according to described Microsoft Loopback Adapter information and described network interface card activation bit initialization Microsoft Loopback Adapter load driver: configuration virtual network interface card enable, receive and dispatch bag resource and according to the Microsoft Loopback Adapter type of obtaining load corresponding drive and load corresponding number of times according to the Microsoft Loopback Adapter number of obtaining drive.
Wherein, described operating system is (SuSE) Linux OS; Described virtual machine is VMware virtual machine.
Wherein, described configuration kernel, network interface card is driven and compiled into kernel, comprise: configuration linux kernel .config file, click relevant option and VMware PVSCSI driver support option under Network device support, SCSI device support, make recompile kernel network interface card drive part code and support VMware virtual machine disk drive type; Revise the inittab file under etc, linux system information is shown by serial port terminal modifications to be that the console terminal that VMware is used shows.
The automatic detection of a kind of Microsoft Loopback Adapter that the embodiment of the present invention provides and drive load method, be applied to be provided with on the virtual machine of the operating system compiling, after the information of obtaining kernel preservation until user's state, user's state initialization Microsoft Loopback Adapter drives and resource allocation, the processing of the automatic detection of Microsoft Loopback Adapter and drive load and network data message is all placed on to user's state, automatic detection and drive load at user's state Microsoft Loopback Adapter have been realized, and then can eliminate kernel state and drive the system call bring and the great number expense of packet copy, reduced system performance loss, improve cpu busy percentage.
Accompanying drawing explanation
Figure 1 shows that automatic detection and the drive load method flow diagram of the Microsoft Loopback Adapter that the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of automatic detection and drive load method of Microsoft Loopback Adapter, be applied to be provided with on the virtual machine of the operating system compiling, the processing of the automatic detection of Microsoft Loopback Adapter and drive load and network data message is all placed on to user's state, can realizes automatic detection and the drive load of user's state Microsoft Loopback Adapter.
Figure 1 shows that automatic detection and the drive load method flow diagram of the Microsoft Loopback Adapter that the embodiment of the present invention provides.As shown in Figure 1, the method comprises:
Step 100: the kernel of configuration operation system, network interface card activation bit is compiled into this kernel, generate new kernel.
The configuration file of revising kernel, clicks network device driver option, makes recompile kernel network interface card drive part code and supports virtual machine disk drive type; The output configuration of retouching operation system, shows by serial port terminal modifications to be that the console terminal that virtual machine is used shows by this operation system information.
Step 200: compile new kernel and generate kernel mirror image file, the startup item of revising kernel guides this kernel mirror image file start.
Step 300: kernel starts initial phase, and stops after surveying and preserve Microsoft Loopback Adapter information.
Kernel starts initial phase, and PCI drive load can call unified interface and register each driving, then scans all devices in pci bus.Match condition according to driving with the identification information of equipment, judges to drive whether mates with equipment.
At PCI, drive in the process of mating with equipment, according to Microsoft Loopback Adapter classification code (Class Code), process separately Microsoft Loopback Adapter, at kernel, detect Microsoft Loopback Adapter driving and the rear all information needing of Microsoft Loopback Adapter equipment coupling, the driving type that comprises Microsoft Loopback Adapter type, number, correspondence, and the corresponding bus number of Microsoft Loopback Adapter, device numbering, function numbering, be kept in global variable, then directly return, Microsoft Loopback Adapter does not reinitialize, wait until user's state and obtain after the information of kernel preservation, deinitialization Microsoft Loopback Adapter drives and resource allocation.
Step 400: in kernel mirror image file start process, user's state is obtained the Microsoft Loopback Adapter information that kernel detects.
Step 500: user's state is according to Microsoft Loopback Adapter information and network interface card activation bit initialization Microsoft Loopback Adapter the load driver obtained.
In operating system initialization process, complete the registration of PCI operation kernel module, user's state can be called kernel function by equipment interface function, user's state is accessed kernel state by interface function, obtain the Microsoft Loopback Adapter information that kernel detects, according to the bag resource that enables, receives and dispatches of Microsoft Loopback Adapter information configuration Microsoft Loopback Adapter, also according to the Microsoft Loopback Adapter type of obtaining, load and drive accordingly and load corresponding number of times driving according to the Microsoft Loopback Adapter number of obtaining.
In an embodiment of the present invention, automatic detection and the drive load of user's state Microsoft Loopback Adapter are realized based on linux kernel, be equipped with on the VMware virtual machine of linux system, the kernel of the grub guiding compiling of kernel be need to revise, Microsoft Loopback Adapter automatic detection and drive load on VMware virtual machine realized.
Wherein, configuration linux kernel, drives network interface card to compile into kernel, comprising:
Configuration linux kernel .config file, click relevant option and VMware PVSCSI driver support option under Network device support, SCSI device support, make recompile kernel network interface card drive part code and support VMware virtual machine disk drive type;
Revise the inittab file under etc, linux system information is shown by serial port terminal modifications to be that the console terminal that VMware is used shows.
The kernel that compiling has configured also generates kernel mirror image file, then revise the grub file (/boot/grub/menu.1st) of linux kernel on VMware virtual machine, newly-increased startup item, make the kernel mirror image file that this kernel is optional and guiding startup compiles, guarantee that the kernel mirror image file of compiling can normally start.
Kernel starts initial phase, and PCI drive load can call unified interface pci_register_driver and register each driving, then scans all devices in pci bus.Match condition according to driving with the identification information of equipment, judges to drive whether mates with equipment.At PCI, drive in the process of mating with equipment, according to Microsoft Loopback Adapter classification code (Class Code), process separately Microsoft Loopback Adapter, at kernel, detect Microsoft Loopback Adapter driving and the rear all information needing of Microsoft Loopback Adapter equipment coupling, the driving type that comprises Microsoft Loopback Adapter type, number, correspondence, and the corresponding bus number of Microsoft Loopback Adapter, device numbering, function numbering, be kept in global variable, then directly return, Microsoft Loopback Adapter does not reinitialize.
The drive load of VMware Microsoft Loopback Adapter is realized in user's state, and user's state drives need to possess two basic conditions: the patch of bulk memory application and Mmap memory-mapped; The patch of bulk memory application (Bigphysarea) is with solving the problem that Linux cannot apply for bulk contiguous memory; Mmap memory-mapped is used to provide the function that physical address map is user's state address, makes user's state space can have access to the internal memory of DMA.
Linux initial phase is applied for all internal memories in the Bigphysarea reserved memory district creating, and obtains start address and the size of physical memory, and record; In Linux initialization procedure, complete the registration of PCI operation kernel module, user's state can be called kernel function by equipment interface function, user's state PciUsr accesses kernel state PciKemel by interface function, obtain the Microsoft Loopback Adapter information that kernel detects, according to the bag resource that enables, receives and dispatches of Microsoft Loopback Adapter information configuration Microsoft Loopback Adapter, also according to the Microsoft Loopback Adapter type of obtaining, load and drive accordingly and load corresponding number of times driving according to the Microsoft Loopback Adapter number of obtaining.
The automatic detection of a kind of Microsoft Loopback Adapter that the embodiment of the present invention provides and drive load method, be applied to be provided with on the virtual machine of the operating system compiling, automatic detection and drive load at user's state Microsoft Loopback Adapter have been realized, the processing of the automatic detection of Microsoft Loopback Adapter and drive load and network data message is all placed on to user's state, kernel state be can eliminate like this and the system call bring and the great number expense of packet copy driven, reduce system performance loss, improved cpu busy percentage.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, be equal to replacement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. the automatic detection of Microsoft Loopback Adapter and a drive load method, be characterised in that, is applied to be provided with on the virtual machine of the operating system compiling, and described method comprises:
Configure the kernel of described operating system, network interface card activation bit is compiled into described kernel, generate new kernel;
Compile described new kernel and generate kernel mirror image file, the startup item of revising described kernel guides described kernel mirror image file start;
Described kernel starts initial phase, and stops after surveying and preserve Microsoft Loopback Adapter information;
In described kernel mirror image file start process, user's state is obtained the Microsoft Loopback Adapter information that described kernel detects;
User's state is according to described Microsoft Loopback Adapter information and described network interface card activation bit initialization Microsoft Loopback Adapter load driver.
2. method according to claim 1, is characterized in that, the kernel of the described operating system of described configuration, compiles network interface card activation bit into described kernel, generates new kernel, comprising:
Revise the configuration file of described kernel, click network device driver option, make described recompile kernel network interface card drive part code and support described virtual machine disk drive type;
Revise the output configuration of described operating system, described operation system information is shown by serial port terminal modifications to be that the console terminal that described virtual machine is used shows.
3. the method for claim 1, is characterized in that, before kernel starts initial phase, further comprises:
Described operating system application bulk contiguous memory; And shine upon by operating system memory, by the physical address map of internal memory, be user's state address.
4. method according to claim 1, is characterized in that, described kernel starts initial phase, and stops after surveying and preserve Microsoft Loopback Adapter information, comprising:
PCI drive load calls unified interface and registers each driving, all devices in scanning pci bus, and the match condition according to driving with the identification information of equipment, after judging that driving is mated with equipment, preserves the Microsoft Loopback Adapter information detecting, and termination.
5. method according to claim 1, it is characterized in that, described in described kernel mirror image file start process, user's state is obtained the Microsoft Loopback Adapter information that described kernel detects and is comprised: user's state is accessed kernel state by interface function, obtains the Microsoft Loopback Adapter information that kernel detects.
6. method according to claim 1, is characterized in that, described Microsoft Loopback Adapter information comprises that Microsoft Loopback Adapter type, Microsoft Loopback Adapter number, corresponding driving type and Microsoft Loopback Adapter are as the facility information of PCI equipment.
7. method according to claim 6, is characterized in that, described Microsoft Loopback Adapter, as the facility information of PCI equipment, comprising: the corresponding bus number of Microsoft Loopback Adapter equipment, device numbering and function numbering.
8. method according to claim 1, it is characterized in that, described user's state is according to described Microsoft Loopback Adapter information and described network interface card activation bit, and initialization Microsoft Loopback Adapter load driver comprise: enabling, receive and dispatch bag resource and loading to drive accordingly and load corresponding number of times according to the Microsoft Loopback Adapter number of obtaining according to the Microsoft Loopback Adapter type of obtaining of configuration virtual network interface card drives.
9. according to the arbitrary described method of claim 1 to 8, it is characterized in that, described operating system is (SuSE) Linux OS; Described virtual machine is VMware virtual machine.
10. method according to claim 9, is characterized in that, described configuration kernel drives network interface card to compile into kernel, comprising:
Configuration linux kernel .config file, click relevant option and VMware PVSCSI driver support option under Network device support, SCSI device support, make recompile kernel network interface card drive part code and support VMware virtual machine disk drive type;
Revise the inittab file under etc, linux system information is shown by serial port terminal modifications to be that the console terminal that VMware is used shows.
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