• Ilpo Järvinen's avatar
    tcp: kill pointless urg_mode · 33f5f57e
    Ilpo Järvinen authored
    It all started from me noticing that this urgent check in
    tcp_clean_rtx_queue is unnecessarily inside the loop. Then
    I took a longer look to it and found out that the users of
    urg_mode can trivially do without, well almost, there was
    one gotcha.
    
    Bonus: those funny people who use urg with >= 2^31 write_seq -
    snd_una could now rejoice too (that's the only purpose for the
    between being there, otherwise a simple compare would have done
    the thing). Not that I assume that the rest of the tcp code
    happily lives with such mind-boggling numbers :-). Alas, it
    turned out to be impossible to set wmem to such numbers anyway,
    yes I really tried a big sendfile after setting some wmem but
    nothing happened :-). ...Tcp_wmem is int and so is sk_sndbuf...
    So I hacked a bit variable to long and found out that it seems
    to work... :-)
    Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    33f5f57e
tcp.h 12.2 KB