[riot-notifications] [RIOT-OS/RIOT] sys/net/gnrc: fix in-band signaling of no RSSI (#15754)

Marian Buschsieweke notifications at github.com
Wed Jan 13 11:05:51 CET 2021

> In that case, we can simply include a (union?) that points to technology specific L2 metadata. This way we can tackle these differences

Hmm, a `union` containing multiple pointers doesn't gain that much type safety over `void *`. Also: previously the L2 metadata was allocated in the `gnrc_pkt_snip_t` containing the `netif_hdr_t`. I wonder, if we at this point might just create an additional `gnrc_pkt_snip_t` containing the metadata. What kind of metadata it contains could be encoded via the enum value in `gnrc_pkt_snip_t::type`.

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