On Wed, 2021-11-24 at 05:59 -0800, Jakub Kicinski wrote: > > FWIW I never found the be/le versions useful. Most of the time the data > comes from bus accessors which swap or is unaligned so you have to do > be/le_get_unaligned, which swaps. Plus if you access/set multiple > fields you'd swap them one by one which seems wasteful. Oh, we use them all the time in wifi! I'm not sure I'm too concerned about wasteful - actually in wifi most of the time it's little endian to start with, which matches the CPU for all practical uses of wifi (**), and often we just access one field or so. And anyway if we extract more than a single bit we need to swap anyway, and I hope if it's just a single bit the compiler will optimize since the one side is a constant? But whatever ... (**) I had a fight with big-endian ARM a few years ago just to get wifi tested on big-endian ... > Right now it seems the uppercase macros are more prevalent. > Not in my world ;-) $ git grep FIELD_GET -- ... | wc -l 20 $ git grep le32_get_bits -- ... | wc -l 44 $ git grep le16_get_bits -- ... | wc -l 12 $ git grep u8_get_bits -- ... | wc -l 17 :-) johannes
