[lwip-devel] [task #14128] Appropriate byte counting/stretch ACK support

[Joel Cunningham]

Follow-up Comment #27, task #14128 (project lwip):

I did find a 2 byte hole.  unsent_oversize included 2 bytes of padding.  Tests
done with MSVC.  So if we are building with LWIP_WND_SCALE set to 0,
bytes_acked can go in this hole, otherwise with LWIP_WND_SCALE set to 1, it
goes after the hole (and doesn't create any new hole since tcpwnd_size_t is 4
bytes).  Here's my testing:

With LWIP_WND_SCALE set to 0, pcb is 156 bytes before ABC patch and 160 bytes
after.  With LWIP_WND_SCALE set to 1, pcb is 212 bytes before ABC patch and
220 bytes after

I'll update my patch to put bytes_acked after unsent_oversize and push it

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