CN113938447A - BCM5396 exchange chip software system and data uploading and issuing method - Google Patents
BCM5396 exchange chip software system and data uploading and issuing method Download PDFInfo
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- CN113938447A CN113938447A CN202111080565.1A CN202111080565A CN113938447A CN 113938447 A CN113938447 A CN 113938447A CN 202111080565 A CN202111080565 A CN 202111080565A CN 113938447 A CN113938447 A CN 113938447A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 230000004048 modification Effects 0.000 claims description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/35—Switches specially adapted for specific applications
- H04L49/351—Switches specially adapted for specific applications for local area network [LAN], e.g. Ethernet switches
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/20—Support for services
- H04L49/201—Multicast operation; Broadcast operation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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Abstract
The invention provides a software system based on a BCM5396 exchange chip and a data uploading and issuing method, comprising an upper computer module and an exchange module, wherein: the upper computer module controls the exchange module register and processes the Ethernet data of the exchange module; the switching module is used for providing an Ethernet switching function; the upper computer module comprises an Mdio interface module and an MII interface module; the Mdio interface module is used for realizing the configuration of switching port mode conversion, a two-layer switching protocol and an address learning table aiming at the register control of the switching module; and the MII interface module receives a multicast protocol packet of the switching module. The invention provides a VxWorks adaptation scheme of an upper computer system and software of a dynamic multicast protocol, and provides a choice for a domestic low-power-consumption intelligent switching solution.
Description
Technical Field
The invention relates to the field of Ethernet switching, in particular to a BCM5396 switching chip software system and a method.
Background
The BCM5396 is originally a 16-port low-power-consumption switching chip produced by the Botong company, provides an MII management interface, a spi, an mdio/mdc control bus, and is suitable for a plurality of low-power-consumption network application scenarios. The hardware solution is usually used as a two-layer fool exchange. In an ethernet information control processing system, many applications establish a communication service mechanism with multiple network nodes through multicast. The multicast information of the IP layer is broadcast by default after being encapsulated into ethernet data frames to the MAC layer, i.e. all network ports have data packets, which may deteriorate the network environment. The radar information control processing system with large data volume and high real-time requirement is a great hidden trouble. With the advent of domestic cpus and 5396, we can implement a dynamic multicast igmp-snooping network protocol based on a two-layer network on a platform implemented by the two chips.
The utility model patent of patent document CN204928886U discloses a CPCI gigabit ethernet exchange board based on BCM5396 chip, which comprises a BCM5396 exchange chip and PHY chips connected to two BCM54680, wherein each PHY chip is connected to two pulse transformers, each pulse transformer is externally connected to 4 gigabit network interfaces, and 16 gigabit network interfaces are provided; wherein, the 15-channel gigabit network interface is externally output through a 110 PINCCI connector with the model of ERNI354142 and a 110 PINCCI connector with the model of ERNI354148, and the other 1-channel gigabit network is externally output through 1 RJ45 standard interface; the CPCI gigabit Ethernet exchange board card is provided with a power supply module, and the power supply module supplies power to all chips and devices of the board card; the CPCI gigabit Ethernet exchange board card is also provided with an FPGA chip with the model number of EPM240T100C5N connected with a BCM5396 exchange chip, and the FPGA chip is connected with a program programming interface through a 10PIN2.54 connector. But the above scheme cannot realize the low power consumption function.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a BCM5396 exchange chip software system and a data uploading and issuing method.
The software system based on the BCM5396 exchange chip provided by the invention comprises an upper computer module and an exchange module, wherein:
the upper computer module controls the exchange module register and processes the Ethernet data of the exchange module;
the switching module is used for providing an Ethernet switching function;
the upper computer module comprises an Mdio interface module and an MII interface module;
the Mdio interface module is used for realizing the configuration of switching port mode conversion, a two-layer switching protocol and an address learning table aiming at the register control of the switching module;
and the MII interface module receives a multicast protocol packet of the switching module.
Preferably, the system further comprises a dynamic multicast software application module, wherein the dynamic multicast software application module realizes the function of dynamically multicasting the IGMP-Snooping network.
Preferably, the switch module includes a BCM5396 switch chip.
Preferably, the Mdio interface module realizes Mdio device driving of the BCM5396 switch chip through Mdio line driving.
Preferably, the Mdio interface module is implemented by the MII register 16-27 part of the register in the BCM5396 switch chip.
The data uploading method of the software system based on the BCM5396 exchange chip provided by the invention comprises the following steps:
protocol packet uploading step: the MII interface of the exchange module uploads a protocol packet on a network;
and a network drive modification step: and modifying the network drive of the VxWork, and modifying the part for obtaining the connection state in the general network drive process into a fixed up state.
The data issuing method of the software system based on the BCM5396 exchange chip provided by the invention comprises the following steps:
a marking step: marking tag marks on the issued data packets;
a forwarding step: the switching module forwards the data packet with tag.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a VxWorks adaptation scheme of an upper computer system and a software of a dynamic multicast protocol, and provides a choice for a domestic low-power-consumption intelligent exchange solution.
2. The protocol software of the invention changes the multicast protocol data packet which is originally broadcasted into the multicast group member corresponding exchange port, thereby avoiding the invalid forwarding process.
3. The invention can greatly improve local network environment, reduce invalid network data and prevent broadcast storm.
4. The invention provides a protocol packet channel through an mdio control 5396 chip and a specific MII port, and realizes dynamic multicast application on an operating system.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a basic hardware diagram of the exchange of a BCM5396 exchange chip software system.
Fig. 2 is a flowchart of the data reading of the BCM5396 switch chip software.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
As shown in fig. 1 and 2, according to a BCM5396 switch chip software system and a data uploading and issuing method provided by the present invention, the software system includes an upper computer module and a switch module, the upper computer module is used for controlling a chip register and processing ethernet data on a switch chip. The dynamic multicast software application module realizes the function of dynamically multicasting the IGMP-Snooping network. The switching module is mainly provided with a 5396 chip and provides an Ethernet switching function. Wherein the host computer module contains following two interface module: the Mdio interface module is mainly used for realizing the mode conversion of the exchange port, the two-layer exchange protocol, the configuration of an address learning table and the like aiming at the register control of the exchange chip; and the MII interface module receives the multicast protocol packet of the switching module.
Specifically, the Mdio interface module implements Mdio device drivers for 5396 using a system Mdio line driver. The Mdio interface is mainly realized by a part of registers of the MII registers 16-27 in the exchange chip.
For the MII interface module, the MII interface of the switch chip 5396 uploads a management protocol packet on the network during operation. And providing an uploading channel and a sending channel of the protocol packet aiming at the multicast application scene. In order to be able to obtain an IP packet, the network driver of VxWork must be modified. And converting the part for obtaining the connection state in the general network driving process into a fixed up state by acquiring from the PHY chip by default. When a data packet is issued, due to the special design of the 5396MII port, a corresponding tag mark must be marked in the IP packet, otherwise, the 5396 chip cannot forward the protocol packet.
For the dynamic multicast software application module, the dynamic multicast protocol application mainly processes the IGMP protocol packet through a network system MUX layer API of VxWorks. The upper computer obtains the members joining the multicast group, and operates the exchange chip through the MDIO interface module to complete the dynamic multicast function of the exchange on the network. Meanwhile, the IGMP packet is broadcasted and inquired through the MII module at regular time, the multicast group members are updated, and the network state is maintained. The system can be compatible with IGMP1.0, IGMP2.0 and IGMP3.0 versions. The dynamic multicast protocol uploads IGMP messages to a CPU, and the IGMP messages are sent to an exchange chip after being processed by a MUX layer of the Vxworks network system, and corresponding configuration operation is carried out to complete multicast actions.
Those skilled in the art will appreciate that, in addition to implementing the system and its various devices, modules, units provided by the present invention as pure computer readable program code, the system and its various devices, modules, units provided by the present invention can be fully implemented by logically programming method steps in such a manner as to implement the same functions in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the invention can be regarded as a hardware component, and the devices, modules and units included in the system for realizing various functions can also be regarded as structures in the hardware component; means, modules, units for performing the various functions may also be regarded as structures within both software modules and hardware components for performing the method.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (7)
1. The utility model provides a software system based on BCM5396 exchange chip which characterized in that, includes host computer module and exchange module, wherein:
the upper computer module controls the exchange module register and processes the Ethernet data of the exchange module;
the switching module is used for providing an Ethernet switching function;
the upper computer module comprises an Mdio interface module and an MII interface module;
the Mdio interface module is used for realizing the configuration of switching port mode conversion, a two-layer switching protocol and an address learning table aiming at the register control of the switching module;
and the MII interface module receives a multicast protocol packet of the switching module.
2. The BCM5396 switch chip based software system according to claim 1, further comprising a dynamic multicast software application module, said dynamic multicast software application module implementing a dynamic multicast IGMP-Snooping network function.
3. The BCM5396 switch chip based software system according to claim 1, wherein said switch module comprises a BCM5396 switch chip.
4. The BCM5396 switch chip-based software system according to claim 3, wherein the Mdio interface module implements an Mdio device driver of the BCM5396 switch chip through an Mdio line driver.
5. The BCM5396 switch chip based software system according to claim 4, wherein the Mdio interface module is implemented by MII register 16-27 partial registers in the BCM5396 switch chip.
6. A data uploading method of a software system based on a BCM5396 switch chip according to any one of claims 1-5, comprising the following steps:
protocol packet uploading step: the MII interface of the exchange module uploads a protocol packet on a network;
and a network drive modification step: and modifying the network driver of the VxWork, and modifying the part for obtaining the connection state in the general network driving process into a fixed up state.
7. A data transmission method of a software system based on a BCM5396 switch chip according to any one of claims 1-5, comprising the following steps:
a marking step: marking tag marks on the issued data packets;
a forwarding step: the switching module forwards the data packet with tag.
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| CN102111320A (en) * | 2010-12-29 | 2011-06-29 | 武汉烽火网络有限责任公司 | Method for controlling plane data interaction in distributed system |
| CN104243174A (en) * | 2014-10-10 | 2014-12-24 | 沈辉 | Network and SRIO (serial rapid input/output) data exchanging plate based on VPX bus and control method for network and SRIO data exchanging plate |
| CN213585836U (en) * | 2020-12-18 | 2021-06-29 | 成都能通科技有限公司 | Two-layer network exchange management system based on PowerPC |
-
2021
- 2021-09-15 CN CN202111080565.1A patent/CN113938447A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090034540A1 (en) * | 2007-08-02 | 2009-02-05 | Thales Avionics, Inc. | System and method for streaming video on demand (vod) streams over a local network |
| CN102111320A (en) * | 2010-12-29 | 2011-06-29 | 武汉烽火网络有限责任公司 | Method for controlling plane data interaction in distributed system |
| CN104243174A (en) * | 2014-10-10 | 2014-12-24 | 沈辉 | Network and SRIO (serial rapid input/output) data exchanging plate based on VPX bus and control method for network and SRIO data exchanging plate |
| CN213585836U (en) * | 2020-12-18 | 2021-06-29 | 成都能通科技有限公司 | Two-layer network exchange management system based on PowerPC |
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| Title |
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| BROADCOM: ""BCM5396 Data Sheet"", pages 35 - 36, Retrieved from the Internet <URL:https://www.mouser.com/datasheet/2/678/broadcom_limited_avgo-s-a0007199324-1-1747630.pdf> * |
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