rx-fpq-optimize-20050425

rx-fpq-optimize-20050425

FIXES 17805

here's a patch that reduces the overhead of transfers
between the local and global free packet queues. The old algorithm was
O(n) in the number of store instructions -- 7 per rx_packet. I've added
some bulk transfer macros to the rx_queue package. Now, the number of
store instructions is O(1) -- 6 total. This should help reduce bus
contention and cache line invalidates on SMPs.