> Quoting Sean Hefty <[EMAIL PROTECTED]>:
> Subject: Re: [ewg] Re: OFED 1.2 beta blocking bugs
>
> >From a quick look at the code, it does look like there are some races
> > in ipoib_multicast.c. The place where a QP is actually attached to a
> > group is essentially (trimming debug prints):
> >
> > if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags))
> > return 0;
> >
> > ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid),
> > &mcast->mcmember.mgid);
> >
> > and the place where a QP is detached is:
> >
> > if (test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) {
> > ret = ipoib_mcast_detach(dev, be16_to_cpu(mcast->mcmember.mlid),
> > &mcast->mcmember.mgid);
>
> Going back to 2.6.20 (pre-multicast changes), this area of the code looks
> like
> it has the same race. Was IPoIB HA testing done on 2.6.20 or earlier
> versions
> of the code,
yes
> and if so, were any issues found? (I'm not sure we've found all of
> the problems yet.)
no
--
MST
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