Hi, I hope to ask some questions regarding LWIP_PBUF_CUSTOM_DATA. We were hoping to pass some TCP flow specific metadata on pbuf to the netif driver layer, and did not find an API (for both socket and netconn) to control this field when sending TCP data.
1. Is the LWIP_PBUF_CUSTOM_DATA intended to be used only on the receiving directly (for example, passing a timestamp to the receiving application)? 2. Can you please share some recommendations or guidance about how we can achieve this goal? Thanks a lot for your help! Best, Sichen Song
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