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  • Ramon Fried's avatar
    net: tftp: Add client support for RFC 7440 · cc6b87ec
    Ramon Fried authored and Tom Rini's avatar Tom Rini committed
    Add support for RFC 7440: "TFTP Windowsize Option".
    This optional feature allows the client and server
    to negotiate a window size of consecutive blocks to send as an
    alternative for replacing the single-block lockstep schema.
    windowsize can be defined statically during compilation by
    setting CONFIG_TFTP_WINDOWSIZE, or defined in runtime by
    setting an environment variable: "tftpwindowsize"
    If not defined, the windowsize is set to 1, meaning that it
    behaves as it was never defined.
    Choosing the appropriate windowsize depends on the specific
    network topology, underlying NIC.
    You should test various windowsize scenarios and see which
    best work for you.
    Setting a windowsize too big can actually decreases performance.
    Signed-off-by: default avatarRamon Fried <>
    Reviewed-by: default avatarMarek Vasut <>