net80211: refactor the if_input call into ieee80211_vap_deliver_data()

[adrian]

Summary

Refactor the two places where NET_EPOCH_ENTER; if_input; NET_EPOCH_EXIT
are called into a single spot in ieee80211_freebsd.c.

This removes both if_input references and puts all the NET_EPOCH stuff
into ieee80211_freebsd.c.

[bz]

If you remove the local variable then this is fine (it's also fine this way). I may not see this again before Thu so please go ahead.

sys/net80211/ieee80211_freebsd.c

1238

Don't need that if you pass vap->iv_ifp to if_input

[adrian]

update from bz