CN109842534B

CN109842534B - Equipment test verification method based on switched FC simulation card

Info

Publication number: CN109842534B
Application number: CN201910126302.6A
Authority: CN
Inventors: 解军; 蔡沅成
Original assignee: Chengdu Uestc Optical Communication Co ltd
Current assignee: Chengdu Uestc Optical Communication Co ltd
Priority date: 2019-02-20
Filing date: 2019-02-20
Publication date: 2022-10-04
Anticipated expiration: 2039-02-20
Also published as: CN109842534A

Abstract

The invention discloses a device test verification method based on a switched FC simulation card, which comprises the following steps: 1) Inserting an FC simulation card on a test host through a PCIE interface, and performing data communication between the FC simulation card and the test host through a PCEI bus; 2) Sequentially point-to-point interconnecting N ports of the FC simulation card with N different external real tested node devices; 3) The test host provides a multi-node simulation application program, and each application program is matched with a corresponding FC simulation card port to finish simulating all simulation node equipment with communication requirements of real tested node equipment connected with the port by loading different communication configuration schemes; 4) And the N real tested node devices realize information interaction through the FC simulation card. The invention can simulate a plurality of communication objects of the tested node equipment by using one high-performance test host and one multi-port FC simulation card, and completely test the tested node equipment, thereby saving hardware equipment resources and reducing test cost.

Description

Equipment test verification method based on switched FC simulation card

Technical Field

The invention relates to the technical field of communication, in particular to a device test verification method based on a switched FC simulation card.

Background

The degree of integration of modern avionics systems is continuously increasing, from discrete avionics systems in the 70 s of the 20 th century, to combined avionics systems, to integrated avionics systems, and to present advanced integrated avionics systems, the original single-node communication is gradually replaced by multi-node complex communication, and the original single communication link is gradually replaced by a unified communication network. The difference between an avionic network and a general commercial storage area network is that the avionic network mainly operates in extremely severe environments such as aerospace and the like, and high reliability and stability are required to be adopted in the design of equipment and networks according to the particularity of the working environment. The formulation of the Fibre Channel (FC) protocol greatly meets this demand, and therefore FC networks are increasingly used in modern avionics systems. At present, FC networks are rapidly developed in the aviation industry of China and are applied to various machine types, the aviation industry group adopts a mode of matching with a host, the host is responsible for FC network design and overall joint debugging, and the matching is responsible for development and testing of sub-equipment modules.

In order to ensure higher reliability and stability of the avionic FC network, the target FC network and its sub-equipment modules need to be fully tested and verified. In addition, for the complete station, during the design period of the model airplane, no complete test verification environment exists, but the developed sub-equipment module needs to complete the preliminary test and then can be sent to the host machine for overall joint debugging. Therefore, the requirements for the simulation FC network and the sub-devices thereof are urgent, however, in general, the avionic FC network includes dozens of sub-device modules, such as radar, electronic warfare, fire control, navigation fusion, and the like, even if we build the whole test system in a semi-physical simulation manner, each of the many sub-device modules needs to be simulated by one FC simulation card, and meanwhile, one FC network switch is needed as a core switching node, which is still very high in cost, so we must adopt other lower-cost schemes to complete the test and verification of the target device.

The avionic FC network is mainly composed of FC network switches and node machines, as shown in fig. 1. In the avionic FC network, one node communicates with a plurality of node devices through a switch, therefore, for a single node device supplier, assuming that the device supplier produces N different node devices, in the avionic FC network, the number of nodes having communication requirements with the N node devices is M, in order to test and verify the functions and performance of the N node devices, normally, one FC network switch is indispensable, and in addition, a plurality of FC simulation cards capable of simulating nodes are required, and the scheme principle is as shown in fig. 2. According to the scheme, one simulation card simulates one node device, interconnection between the simulation node device and the target device to be tested is completed through one FC network switch, and the structure is very close to a real avionic network.

Disclosure of Invention

In order to solve the above problem, the present invention provides a device test verification method based on a switched FC emulation card, which includes the following steps:

s1, inserting an FC simulation card on a test host through a PCIE interface, and performing data communication between the FC simulation card and the test host through a PCEI bus;

s2, sequentially interconnecting N ports of the FC emulation card with N different external real tested node devices in a point-to-point manner;

s3, loading different communication configuration schemes by the test host, and completing simulation of all simulated node equipment with communication requirements of real tested node equipment connected with the ports by matching with the ports of the corresponding FC simulation cards;

and S4, the FC simulation card provides information exchange capability for the N real tested node devices, namely the N real tested node devices realize information exchange through the FC simulation card.

Preferably, in step S3, the simulated device does not include any one of the N real node devices under test, that is, if the simulated node device having data communication with the first real node device under test includes the second real node device under test, the test host does not simulate the second real node device under test.

Preferably, in step S2, a port of the FC emulation card is connected to the real node device under test through an optical fiber.

Preferably, the FC simulation card includes an exchange decision module for data communication, the exchange decision module is connected to the real node device under test and the simulation application program, and the exchange decision module decides delivery of the message through the destination device identifier.

As an optimization, the switching decision module supports data communication of two types of links, the first type of link is data communication between real node devices to be tested and simulated node devices, and the second type of link is data communication between real node devices to be tested.

Preferably, the PCEI bus is adopted in the first type of link for data communication, and the PCEI bus is not required in the second type of link.

Preferably, the FC emulation card is a dual-port FC emulation card of a PCIE interface.

The invention has the beneficial effects that: the invention can simulate a plurality of communication objects of the tested node equipment by utilizing one high-performance test host and one multi-port FC simulation card, and completely test the tested node equipment, thereby saving hardware equipment resources and reducing test cost under the condition of approaching to a real FC network architecture. In addition, all the test steps and the node communication configuration scheme are loaded by the test host, so that convenience is brought to test personnel.

Drawings

FIG. 1 is a model of a FC network;

FIG. 2 is a test model based on an FC network switch and a plurality of FC emulation cards;

FIG. 3 is a test model based on a switched FC emulation card;

FIG. 4 is a block diagram of a test scheme in example 2 of the present invention.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 3, a device test verification method based on a switched FC emulation card includes the following steps:

s3, the test host provides multi-node simulation application programs, and each application program is matched with a corresponding FC simulation card port to finish simulating all simulation node equipment with communication requirements of real tested node equipment connected with the port by loading different communication configuration schemes;

As described above, the whole test verification process includes communication between the simulation node device and the real node device under test and communication between the real node device under test by the simulation card, where N communication links are provided between the simulation node device and the real node device under test and are independent of each other, information exchange between the real node devices under test is completed by the FC simulation card, and the FC simulation card can accurately send a communication message of the real node device under test to the corresponding real node device under test. Therefore, a test host and an FC simulation card provide a complete FC network test environment for the N real tested node devices.

The multi-node simulation application program can run in parallel, the running number of the multi-node simulation application program is determined by the number of external real tested node devices, and the simulation application program supports simultaneous simulation of a plurality of real tested node devices and provides information interaction for the corresponding external real tested node devices. In addition, each node device to be simulated has a set of communication configuration scheme, and the communication configuration scheme for loading a plurality of nodes simultaneously provides multi-node network information interaction (requesting to surf the internet, getting off the internet, acquiring link states and the like) and data message interaction (emergency messages, event messages and streaming data messages).

Example 2

This example is based on example 1:

as shown in fig. 4, the present embodiment provides a test of 2 real node devices under test. The test system is composed of a test host, a dual-port FC simulation card with a PCIE interface and two pieces of application program software. The whole system has 9 node devices, wherein the Dev1 and the Dev2 are real node devices to be tested, and the Dev3, the Dev5, the Dev6 and the Dev8 are simulation node devices which have communication requirements with the real node devices to be tested, and are simulated by the APP 1; and Dev4, dev5, dev7 and Dev9 are simulated node devices having communication requirements with the real node device under test Dev2 and simulated by APP 2. It is noted that the dummy node device Dev5 node device has a communication requirement with both real node devices under test Dev1 and Dev2, which is reasonable in real avionics FC networks.

The FC emulation card is inserted into a PCIE slot of the test host through a PCIE interface, a port P1 of the FC emulation card is connected with a real tested node device Dev1 optical fiber, a port P2 of the FC emulation card is connected with a real tested node device Dev2 optical fiber, and application program software APP1 and APP2 deployed on the test host are in data communication with a P1 port and a P2 port of the FC emulation card through PCIE buses respectively. The FC emulation card has a switching decision module that supports three link communications of APP1 and Dev1, APP2 and Dev2, and Dev1 and Dev2 simultaneously.

In an avionic FC network, each node device is assigned a unique device ID for device identification, and we define the device ID corresponding to each node device Devi as being 0x10000+ i (i =1,2, \ 8230;, 8,9). The switching decision module of the FC emulation card routes to the device link by determining which device ID the message destination ID matches. The messages of the two links, i.e. APP1 and Dev1, APP2 and Dev2, are communicated between the application program and the FC emulation card through the PCIE bus, and the messages of the links, i.e. Dev1 and Dev2, are directly exchanged inside the FC emulation card, and are not transmitted to the software layer through the PCIE bus.

Under the coordination of application software, the communication process of the real node device Dev1 to be tested is shown in table 1, and the communication process of the real node device Dev2 to be tested is similar to that of Dev1 and is not separately given.

TABLE 1 true measured node device Dev1 communication procedure

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and is not to be construed as limited to the exclusion of other embodiments, and that various other combinations, modifications, and environments may be used and modifications may be made within the scope of the concepts described herein, either by the above teachings or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

In the description of the present invention, it should be noted that the terms "first", "second", "third", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either a wired or wireless connection.

Claims

1. A device test verification method based on a switched FC simulation card is characterized by comprising the following steps:

s1, inserting an FC simulation card on a test host through a PCIE interface, and performing data communication between the FC simulation card and the test host through a PCIE bus;

2. The method according to claim 1, wherein in step S3, the simulated device does not include any of the N real node devices under test, that is, if the simulated node device in data communication with the first real node device under test includes a second real node device under test, the test host does not simulate the second real node device under test.

3. The method according to claim 1, wherein in step S2, the port of the FC emulation card is connected to the real node device under test through an optical fiber.

4. The method as claimed in claim 1, wherein the FC emulation card includes a switching decision module for data communication, the switching decision module is connected to the real node device under test and the emulation application program, and the switching decision module decides delivery of the message according to the destination device identifier.

5. The device test verification method according to claim 4, wherein the switching decision module supports data communication between two types of links, the first type of link is data communication between real node devices under test and simulation node devices, and the second type of link is data communication between real node devices under test.

6. The method of claim 5, wherein a PCIE bus is used for data communication in the first link, and a PCIE bus is not used in the second link.

7. The method of claim 1, wherein the FC emulation card is a PCIE interface dual-port FC emulation card.