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[ Upstream commit9ee11bd03c] When ms timestamp is used, current logic uses 1us in tcp_rcv_rtt_update() when the real rcv_rtt is within 1 - 999us. This could cause rcv_rtt underestimation. Fix it by always using a min value of 1ms if ms timestamp is used. Fixes:645f4c6f2e("tcp: switch rcv_rtt_est and rcvq_space to high resolution timestamps") Signed-off-by: Wei Wang <weiwan@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.