CN106506403A - A kind of fiber channel protocol data method for generation with interaction capabilities - Google Patents
A kind of fiber channel protocol data method for generation with interaction capabilities Download PDFInfo
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- CN106506403A CN106506403A CN201611027092.8A CN201611027092A CN106506403A CN 106506403 A CN106506403 A CN 106506403A CN 201611027092 A CN201611027092 A CN 201611027092A CN 106506403 A CN106506403 A CN 106506403A
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- Prior art keywords
- data
- frame
- transmit queue
- protocol data
- generation
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/6275—Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/56—Queue scheduling implementing delay-aware scheduling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/622—Queue service order
- H04L47/6225—Fixed service order, e.g. Round Robin
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/6295—Queue scheduling characterised by scheduling criteria using multiple queues, one for each individual QoS, connection, flow or priority
Abstract
The invention discloses a kind of fiber channel protocol data method for generation with interaction capabilities, is that each sending port arranges transmit queue, and distributes memory space for each transmit queue；A transmit queue is selected, the frame data, primitive, wait condition or time delay required for insertion；The sending method of transmit queue is set；Start after sending, during data in transmit queue are write successively by DDR corresponding buffering areas, the transmission data in DDR are read by FPGA, transmission types are judged according to control word, if condition is to wait for, wait the protocol data for receiving to meet condition after, data below are retransmited；If time delay then awaiting a specified time is retransmited；If protocol data is then assembled according to the frame format of standard and is sent by primitive or frame data.The method has feedback capability, can wait and receive certain certain types of frame, and primitive or mistake retransmit data below, or waits for a period of time and retransmit.
Description
Technical field
The present invention relates to optical-fibre channel bus protocol measuring technology, belongs to bus protocol field tests, more particularly to a kind of
There is the channel protocol data method for generation of interaction capabilities.
Background technology
Fibre Channel technologies rely on superfast transfer rate (can reach the transfer rate of 10Gbps), and good is anti-
The features such as jamming performance, stable transmission quality just in fields such as air communications, mass data storages to extensively application, to optical fiber
Channel bus equipment testing requirement is very high.The data for how simulating actual fiber channel unit are optical-fibre channel bus protocols
One of key technology of test.All it is one Framed Data of editor or primitive in fiber channel protocol test typically now, by one
Fixed sequential loop or single send, and not there is feedback capability, i.e., can not optionally send some frames according to the data for receiving,
Especially when the upper-layer protocol for needing to simulate number order-response mode, this simple protocol data is activation mode can not be very
The signal intelligence of good simulation actual fiber channel unit.
Content of the invention
In order to solve the above problems, there is provided a kind of fiber channel protocol data method for generation with interaction capabilities, the party
Method has feedback capability, can wait and receive certain certain types of frame, and primitive or mistake are retransmited, or during one section of time delay
Between retransmit, while to send data according to priority classify, can cycle through a framing can also single send a framing.Adopt
The fiber channel protocol data generating function that realizes in this way can simulation actual fiber channel unit very well communication
Situation, more accurately carries out test analysis.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of fiber channel protocol data method for generation with interaction capabilities, the DDR being connected including FPGA and with FPGA,
Comprise the following steps：
Arrange for each sending port and there is the other transmit queue of different priorities, and store for each transmit queue distribution
Space；
A transmit queue is selected, the frame data, primitive, wait condition or time delay required for insertion；
The sending method of transmit queue is set；
Start after sending, the data in transmit queue are write successively in the DDR corresponding buffering areas controlled by FPGA, by
FPGA reads the transmission data in DDR, judges transmission types according to control word, waits the association for receiving if condition is to wait for
After view data meet condition, data below are retransmited；If time delay then awaiting a specified time is retransmited；If primitive
Or protocol data is then assembled according to the frame format of standard and is sent by frame data.
Three transmit queues, respectively transmit queue 1, transmit queue 2, transmit queue 3 are set for each sending port, are sent out
Send queue 1 highest priority, 3 priority of transmit queue is minimum.
Each transmit queue is stored in the memory space of distribution in units of 4 bytes；After space is full, it is impossible to be inserted into
Send data.
Energy inserting error in the frame data, including CRC, Disparity, long frame, short frame.
When insertion receives wait condition, the condition that can be arranged includes：Frame delimiter, content frame, mistake or primitive.
Three conditions of frame delimiter, content frame and mistake can carry out with or logical combination, then carry out with primitive alternative condition
Or, forming wait condition.
The frame delimiter includes selecting a kind of SOF or EOF；The content frame includes arranging deviation post, nybble number
According to word, four BYTE MASKs；The mistake includes CRC, Disparity, short frame, wrong frame.
The sending method of the transmit queue includes circulation or single.
When being set to cycle through mode, the data in the queue are cycled through, priority is less than the data in this queue
Will not send；
When being set to single mode, after complete for the data is activation of the queue, send less than under this transmit queue priority
Data in one transmit queue.
In the buffer, the control word of corresponding 4 bytes of the protocol data word of each 4 byte.
Beneficial effects of the present invention：
1. a kind of fiber channel protocol data method for generation with interactive mode, can wait and receive certain certain kinds
One group protocol data is just sent when the frame or primitive of type, it is also possible to which time delay is retransmited for a period of time.Simultaneously to sending data by excellent
First level classification, can cycle through one group of data can also single one group of data of transmission.
2. the method for the present invention has feedback capability, and this data method for generation can more preferable simulation actual fiber passage
Bus apparatus, the communication mode especially with order-response mode upper-layer protocol so that the performance of fibre channel device is surveyed
Examination is more accurate.
Description of the drawings
Fig. 1 is that interactive mode protocol data occurs flow chart；
Fig. 2 receives wait condition schematic diagram.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
The present embodiment provides the system that a kind of present invention is implemented, a kind of optical-fibre channel bus protocol test system of multiport
System, the DDR being connected including FPGA and with FPGA, the GTX interfaces of FPGA are connected with optic module, and FPGA completes data to be occurred and catch
Obtain function.The system has optical-fibre channel bus protocol data generating function, and data capture, protocol analyzing function can be to light
Fine channel unit and network carry out test analysis.
There is flow chart, a kind of fiber channel protocol data method for generation with interaction capabilities, bag with reference to the data of Fig. 1
Include following steps：
(1) three transmit queues are set for each sending port, three queues have different transmission priority, send
1 highest priority of queue, 3 priority of transmit queue are minimum.The certain memory space of each queue assignment, in units of 4 bytes.
After space is full, it is impossible to be inserted into sending data.
(2) transmit queue is selected, the frame data, primitive, wait condition or time delay required for insertion；And frame number
Mistake (CRC, Disparity, long frame, short frame) is can be inserted into according in.
(3), when, insertion receives wait condition, following condition can be set：Frame delimiter (selecting certain SOF, EOF), frame in
Hold (deviation post, nybble data word, four BYTE MASKs are set), mistake (CRC, Disparity, short frame, wrong frame) or former
Language；Three conditions of frame delimiter, content frame and mistake can carry out with or logical combination, then carry out with primitive alternative condition or, shape
Into the condition of wait, referring to Fig. 2.
(4), the sending method of transmit queue is set：Circulation or single.
(5), start after sending, the data in three transmit queues are write DDR successively that controlled by FPGA and is correspondingly buffered
Qu Zhong, the protocol data word of each 4 byte correspond to the control word of 4 bytes.Transmission data in DDR are read by FPGA, according to
Control word judges transmission types, if condition is to wait for, wait the protocol data for receiving to meet condition after, retransmit behind
Data；If time delay then awaiting a specified time is retransmited；If primitive or frame data are then by protocol data according to mark
Accurate frame format is assembled and is sent.
(6), if provided as the mode that cycles through, then the data in the queue are cycled through, priority is less than this queue
In data will not send；Such as select single mode, then will be complete for the data is activation of the queue after, send be less than this transmit queue
Data in the next transmit queue of priority.
Can wait, it is also possible to
Time delay is retransmited for a period of time.According to priority classify to sending data simultaneously, can cycle through one group of data can also single
Send one group of data.
Receive wait condition and be divided into four groups：Frame delimiter (SOF/EOF), content frame, mistake and primitive, wherein frame are delimited
Three conditions of symbol, content frame and mistake can carry out with or logical combination, then carry out waiting bar or, being formed with primitive alternative condition
Part.
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not to present invention protection model
The restriction that encloses, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
The various modifications that makes by needing to pay creative work or deformation are still within protection scope of the present invention.
Claims (10)
1. a kind of fiber channel protocol data method for generation with interaction capabilities, the DDR being connected including FPGA and with FPGA, its
It is characterized in that, comprises the following steps：
Arrange for each sending port and there is the other transmit queue of different priorities, and empty for each transmit queue distribution storage
Between；
A transmit queue is selected, the frame data, primitive, wait condition or time delay required for insertion；
The sending method of transmit queue is set；
Start after sending, the data in transmit queue are write successively in the DDR corresponding buffering areas controlled by FPGA, read by FPGA
The transmission data in DDR being taken, transmission types being judged according to control word, the protocol data for receiving is waited if condition is to wait for
After meeting condition, data below are retransmited；If time delay then awaiting a specified time is retransmited；If primitive or frame number
According to then protocol data being assembled according to the frame format of standard and is sent.
2. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 1, is characterized in that, be per
Individual sending port arranges three transmit queues, respectively transmit queue 1, transmit queue 2, transmit queue 3, and transmit queue 1 is preferential
Level highest, 3 priority of transmit queue are minimum.
3. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 2, is characterized in that, each
Transmit queue is stored in the memory space of distribution in units of 4 bytes；After space is full, it is impossible to be inserted into sending data.
4. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 1, is characterized in that, described
Energy inserting error in frame data, including CRC, Disparity, long frame, short frame.
5. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 1, is characterized in that, insert
When receiving wait condition, the condition that can be arranged includes：Frame delimiter, content frame, mistake or primitive.
6. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 5, is characterized in that, frame is fixed
Three conditions of boundary's symbol, content frame and mistake can carry out with or logical combination, then carry out with primitive alternative condition or, forming wait
Condition.
7. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 5, is characterized in that, described
Frame delimiter includes selecting a kind of SOF or EOF；The content frame includes arranging deviation post, nybble data word, four bytes
Mask；The mistake includes CRC, Disparity, short frame, wrong frame.
8. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 1, is characterized in that, described
The sending method of transmit queue includes circulation or single.
9. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 8, is characterized in that, arrange
For cycling through during mode, the data in the queue are cycled through, priority will not be sent less than the data in this queue；
When being set to single mode, after complete for the data is activation of the queue, the next one less than this transmit queue priority is sent
Data in transmit queue.
10. a kind of fiber channel protocol data method for generation with interaction capabilities as claimed in claim 1, is characterized in that,
In relief area, the protocol data word of each 4 byte corresponds to the control word of 4 bytes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611027092.8A CN106506403A (en) | 2016-11-17 | 2016-11-17 | A kind of fiber channel protocol data method for generation with interaction capabilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611027092.8A CN106506403A (en) | 2016-11-17 | 2016-11-17 | A kind of fiber channel protocol data method for generation with interaction capabilities |
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| CN106506403A true CN106506403A (en) | 2017-03-15 |
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| CN201611027092.8A Pending CN106506403A (en) | 2016-11-17 | 2016-11-17 | A kind of fiber channel protocol data method for generation with interaction capabilities |
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Cited By (1)
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| CN109617763A (en) * | 2018-12-21 | 2019-04-12 | 北京润科通用技术有限公司 | A kind of method for testing pressure and device for FC-AE bus |
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| US9013999B1 (en) * | 2008-01-02 | 2015-04-21 | Marvell International Ltd. | Method and apparatus for egress jitter pacer |
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Application publication date: 20170315 |
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