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Krzysztof Kopyściński
bc142016bd
net_buf structure in Zephyr has field user_data, which was wrongly ported as os_mbuf->om_data. To stick with porting net_buf as os_mbuf we can base on old Zephyr's implementation, which was changed in commit dd09cbc1c455ab1e067b53f46bee7b6d50689bbc. Before it, user_data was part of data buffer of net_buf. We can implement this the same way, so data_buf is last N octets of os_mbuf->om_data. Accomodate mbuf allocation and freeing to NimBLE.