Hi, After some more fun with spatch, I've come up with these three patches.
I couldn't figure out why spatch didn't convert one skb_put() place, and there was one inside a macro it didn't find. Otherwise, it's pretty much just spatch and changing the functions/prototypes. I've compiled x86 allyesconfig with this and the skb_put_data() and more skb_put_zero() conversions, but I'm going to wait for the 0-day kbuild bot to tell me it succeeded on my branch (pushed all of this to mac80211-next on the skb-access-cleanups branch) before I submit all five patches properly. There's, obviously, no way I'd even have attempted this before having coccinelle :-) johannes
