Pyun YongHyeon 5ed8e782f9 Make sure changing ownership of RX descriptor to be done as last ... operation. Previously ownership was transferred to hardware before setting address of new RX buffer such that it was possible for hardware to use wrong RX buffer address. While here keep compiler from re-ordering instructions by declaring descriptor members volatile. Memory barriers would do the same job but volatile is supposed to be cheaper than using memory barriers, especially on MP systems. Submitted by: marius MFC after: 1 week		2011-02-28 20:37:48 +00:00
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if_sis.c	Make sure changing ownership of RX descriptor to be done as last	2011-02-28 20:37:48 +00:00
if_sisreg.h	Make sure changing ownership of RX descriptor to be done as last	2011-02-28 20:37:48 +00:00