netutils/netinit: Support the NETINIT_WIFIMAC.

[13627105546]

Note: Please adhere to Contributing Guidelines.

Summary

• Why : In some embedded scenarios, the Wi-Fi MAC address is stored in a specific location (e.g., a file like device.info , OTP, or NVM) rather than being generated from a unique ID or fixed at compile time. A mechanism is needed to allow netinit to retrieve this MAC address from the board logic.
• What : This commit adds a new configuration option CONFIG_NETINIT_WIFIMAC . When enabled, netinit attempts to fetch the MAC address via boardctl(BOARDIOC_USER_MAC_WIFI, ...) (defined as BOARDIOC_USER + 3 ). This allows board-specific logic to provide the correct Wi-Fi MAC address during network initialization.

Impact

• Users : Users can now select CONFIG_NETINIT_WIFIMAC in Kconfig if their board supports providing a Wi-Fi MAC address via boardctl .
• Build : Introduces CONFIG_NETINIT_WIFIMAC . No impact on existing builds unless this new option is enabled.
• Hardware : Requires board-level support for BOARDIOC_USER_MAC_WIFI command in board_ioctl if this feature is enabled.
• Compatibility : Backward compatible. Existing MAC address initialization methods ( UIDMAC , ETHERNET , etc.) remain unchanged.

Testing

• Verification :
• Verified that the code compiles successfully with CONFIG_NETINIT_WIFIMAC enabled.
• Verified that checkpatch.sh passes for the modified files.
• Target : Verified on local hardware platform where boardctl is implemented to read MAC address from device storage.

[simbit18]

@13627105546 Please fix

../nuttx/tools/checkpatch.sh -c -u -m -g b0b90ac72886a7d2ee8d9a16e057a4b2c801984e..HEAD
❌ Missing git commit message
Used config files:
    1: .codespellrc
Some checks failed. For contributing guidelines, see:
  https://github.com/apache/nuttx/blob/master/CONTRIBUTING.md
Error: Process completed with exit code 1.

[xiaoxiang781216]

let's define a offical boar ioctl to expose the mac address, @13627105546

[13627105546]

apache/nuttx#18031, I have submitted a commit, which needs to wait for the NuttX commit to be merged first.

[cederom]

What if both wifi and eth are available? Having wifi defined will discard mac definition, correct?

Shouldn't we

#if defined(CONFIG_NETINIT_WIFIMAC)
  char wifi_mac_str[20];
  uint8_t wifi_mac[IFHWADDRLEN];
#endif
#if defined(CONFIG_NETINIT_UIDMAC)
..

[13627105546]

I have made the revisions. Could you kindly take another look?

[acassis]

@13627105546 this is a new Feature, please add a Documentation to it