> -----Original Message----- > From: linux-nfs-owner@xxxxxxxxxxxxxxx [mailto:linux-nfs-owner@xxxxxxxxxxxxxxx] On Behalf Of Haggai Eran > Sent: Monday, July 06, 2015 2:09 AM > To: Steve Wise; dledford@xxxxxxxxxx > Cc: sagig@xxxxxxxxxxxx; ogerlitz@xxxxxxxxxxxx; roid@xxxxxxxxxxxx; linux-rdma@xxxxxxxxxxxxxxx; eli@xxxxxxxxxxxx; target- > devel@xxxxxxxxxxxxxxx; linux-nfs@xxxxxxxxxxxxxxx; trond.myklebust@xxxxxxxxxxxxxxx; bfields@xxxxxxxxxxxx > Subject: Re: [PATCH V3 1/5] RDMA/core: Transport-independent access flags > > On 06/07/2015 02:22, Steve Wise wrote: > > +int rdma_device_access_flags(struct ib_pd *pd, int roles, int attrs) > > +{ > > + int access_flags = attrs; > > + > > + if (roles & RDMA_MRR_RECV) > > + access_flags |= IB_ACCESS_LOCAL_WRITE; > > + > > + if (roles & RDMA_MRR_WRITE_DEST) > > + access_flags |= IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE; > > + > > + if (roles & RDMA_MRR_READ_DEST) { > > + access_flags |= IB_ACCESS_LOCAL_WRITE; > > + if (rdma_protocol_iwarp(pd->device, > > + rdma_start_port(pd->device))) > > + access_flags |= IB_ACCESS_REMOTE_WRITE; > > + } > > + > > + if (roles & RDMA_MRR_READ_SOURCE) > > + access_flags |= IB_ACCESS_REMOTE_READ; > > + > > + if (roles & RDMA_MRR_ATOMIC_DEST) > > + access_flags |= IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_ATOMIC; > > I think you need LOCAL_WRITE for ATOMIC_SOURCE in order to receive the > results of the atomic operation. > Where/how are the results returned? In a recv completion? If so, then that MR would need RDMA_MRR_RECV, not RDMA_MRR_ATOMIC_SOURCE. -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
