• Lucas Nussbaum's avatar
    sctp: Allow to disable SCTP checksums via module parameter · 06e86806
    Lucas Nussbaum authored
    This is a new version of my patch, now using a module parameter instead
    of a sysctl, so that the option is harder to find. Please note that,
    once the module is loaded, it is still possible to change the value of
    the parameter in /sys/module/sctp/parameters/, which is useful if you
    want to do performance comparisons without rebooting.
    Computation of SCTP checksums significantly affects the performance of
    SCTP. For example, using two dual-Opteron 246 connected using a Gbe
    network, it was not possible to achieve more than ~730 Mbps, compared to
    941 Mbps after disabling SCTP checksums.
    Unfortunately, SCTP checksum offloading in NICs is not commonly
    available (yet).
    By default, checksums are still enabled, of course.
    Signed-off-by: default avatarLucas Nussbaum <lucas.nussbaum@ens-lyon.fr>
    Signed-off-by: default avatarVlad Yasevich <vladislav.yasevich@hp.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
structs.h 62.6 KB