Struct layout

[calvernaz]

• packets.RXPK size goes from 168 bytes to 152 bytes (16 bytes).
• packets.TXPK size goes from 144 bytes to 120 bytes (24 bytes).

[brocaar]

Could you let me know what exactly has been improved? I see that you re-ordered some fields but from a quick look at the diff I do not understand:

• packets.RXPK size goes from 168 bytes to 152 bytes (16 bytes).
• packets.TXPK size goes from 144 bytes to 120 bytes (24 bytes).

[calvernaz]

So reordering the fields in those two structs removes the unnecessary padding, saving bytes and gives better memory layout

[calvernaz]

@brocaar makes sense?