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Pointer to the desired link-layer API for this network interface and device hardware. In most cases, the The desired link-layer interface will point to the Ethernet API , (NetIF_API_Ether (see also section L16-1(1))) or the WiFi API,(NetIF_API_WiFi).
dev_api
Pointer to the desired device driver API for this network interface (see also section 5-3-3 “Adding an Ethernet Interface” and section 5-4-2 “Adding a Wireless Interface”).
dev_bsp
Pointer to the specific device's BSP interface for this network interface (see also Chapter 6, “Network section Network Board Support Package”Package).
dev_cfg
Pointer to a configuration structure used to configure the device hardware for the specific network interface (see also Chapter 5, “Network Interface Configuration”section Network Interface Configuration).
phyext_api
Pointer to an optional physical layer device driver API for this network interface. In most cases, the generic physical layer device API will be used, NetPhy_API_Generic, but for Ethernet devices that have non-MII or non-RMII compliant physical layer components, another device-specific physical layer device driver API may be necessary. See also section 7-4 “Ethernet PHY API Implementation”.
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specific network extension layer API.
ext_cfg
Pointer to a configuration structure used to configure the physical layer hardware for the specific network interface (see also section 5-3-2 “Ethernet PHY Configuration”).
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specific network extension layer configuration.
p_err
Pointer to variable that will receive the return error code from this function:
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The first network interface added and started is the default interface used for all default communication. See also section C-12-1 and section C-12-2.Both physical layer API and configuration parameters must ,either be specified or passed NULL pointers.
When a PHY layer is present, the PHY API and configuration need to be indicate in the ext_api and ext_cfg arguments.
Additional error codes may be returned by the specific interface or device driver.
See section 16-1-1 “Adding Network Interfaces” for Initializing Interfaces for a detailed example of how to add an interface.