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authorHariprasad S <hariprasad@chelsio.com>2015-04-21 23:15:01 +0300
committerDoug Ledford <dledford@redhat.com>2015-05-05 16:18:01 +0300
commit4a75a86c8d04390f268d7237cc49fe9a8e36efe7 (patch)
tree99ba8b48deee5b03ad472ac8635dd629cd38af0c /include/rdma
parent09ece8b9e983fe858de6eab7a386d58d194227b6 (diff)
downloadlinux-4a75a86c8d04390f268d7237cc49fe9a8e36efe7.tar.xz
iw_cxgb4: enforce qp/cq id requirements
Currently the iw_cxgb4 implementation requires the qp and cq qid densities to match as well as the qp and cq id ranges. So fail a device open if the device configuration doesn't meet the requirements. The reason for these restictions has to do with the fact that IQ qid X has a UGTS register in the same bar2 page as EQ qid X. Thus both qids need to be allocated to the same user process for security reasons. The logic that does this (the qpid allocator in iw_cxgb4/resource.c) handles this but requires the above restrictions. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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