tree a4830c70ec6d5e61e073a5f48dc643834b1b2241
parent 781f6d8f81d96df56c6fa04a66b997d6f732cac7
author Sean Edmond <seanedmond@linux.microsoft.com> 1672884986 -0800
committer Tom Rini <trini@konsulko.com> 1675367093 -0500

net: tftp: Fix for DATA ACK for block count out of order

In rfc7440, if an ACK is not received by the server or if the
last data block in a window is dropped, the server will timeout and
retransmit the window.  In this case, the block count received will be
less than the internal block count.  In this case, the client
should not ACK.  ACK should only be sent if the received block
count is greater than the expected block count.

Signed-off-by: Sean Edmond <seanedmond@linux.microsoft.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>