On Fri, Sep 23, 2011 at 12:21 PM, Hefty, Sean <[email protected]> wrote:
> > > The only way to determine whether fdr10 is active or not is via the > > > vendor proprietary MAD. That info may be reflected in some other API > > > (and/or file) so that MAD does not need to be reissued. In a separate > > > thread on linux-rdma, there was discussion on a couple of different > > > ways to do that from verbs and in this thread that there's no sysfs > > > equivalent in Windows. You've already stated that the Windows support > > > is using libibverbs for libibumad support so it seems appropriate to > > > me to do the same here (in Windows at least). > > > > The proper place for is_fdr10 is in libibumad (and then we wouldn't be > > discussing libibverbs w/ibstat) but that was not done to avoid a > > change to the umad port structure. > > ibstat determines is_fdr10 by reading a file. That same data could just as > easily be exported as a port attribute, which would make it belong to > ibverbs, rather than umad. > > If the only point of exporting is_fdr10 from the kernel is for an ib > management diag to display the value, then it's not a useful value for verbs > applications. > fdr10 is in the same category as active_speed. What's the use for that other than display ? Anyhow, display seems useful to me to know the local port speed. -- Hal
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