On Fri, Apr 5, 2013 at 1:44 PM, Roland Dreier <rol...@kernel.org> wrote: > Thanks. I guess I'll have to set up a testbed and debug this myself. > I'll try to work on that this weekend.
So I was able to reproduce the problem (or at least a problem) with netpipe. Doing "NPtcp -i -2" hit bad data pretty quickly (where the receiver didn't get the same data as the sender sent). It turns out that the problem is with packets that don't go into the fragment page ... with my patch applied, ipoib sends skbs up the stack that have an empty page in the fragment list, and this apparently messes something up in the TCP/IP code. I have a hacky version that clears the frag list if the page isn't used, and that seems to work fine. However I want to clean it up; I should have a good version later today. - R. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
