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J. Nick Koston
fccfab8083
With the lwip lock infrastructure in place from the TCP race fix, the lock-free SPSC ring buffer's wasted slot is no longer needed. Switch to a simple rx_count_ approach that uses all 4 queue slots. Also add LWIP_LOCK() to all UDP methods that call lwip APIs (bind, close, sendto, setsockopt, getsockopt, recvfrom, factories).
