K 10
svn:author
V 7
rwatson
K 8
svn:date
V 27
2009-10-08T11:07:15.457108Z
K 7
svn:log
V 552
Merge r197795 from head to stable/8:

  In tcp_input(), we acquire a global write lock at first only if a
  segment is likely to trigger a TCP state change (i.e., FIN/RST/SYN).
  If we later have to upgrade the lock, we acquire an inpcb reference
  and drop both global/inpcb locks before reacquiring in-order.  In
  that gap, the connection may transition into TIMEWAIT, so we need
  to loop back and reevaluate the inpcb after relocking.

  Reported by:        Kamigishi Rei <spambox at haruhiism.net>
  Reviewed by:        bz

Approved by:	re (kib)

END