sudo patch -p1 < mac80211.compat08082009.wl_frag+ack_v1.patch

with the following error:

can't find file to patch at input line 5
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
|index 0855cac..221bed6 100644
|--- a/net/mac80211/tx.c
|+++ b/net/mac80211/tx.c
--------------------------