Chuck Lever b024dd0eba rxe: IB_WR_REG_MR does not capture MR's iova field ... FRWR memory registration is done with a series of calls and WRs. 1. ULP invokes ib_dma_map_sg() 2. ULP invokes ib_map_mr_sg() 3. ULP posts an IB_WR_REG_MR on the Send queue Step 2 generates an iova. It is permissible for ULPs to change this iova (with certain restrictions) between steps 2 and 3. rxe_map_mr_sg captures the MR's iova but later when rxe processes the REG_MR WR, it ignores the MR's iova field. If a ULP alters the MR's iova after step 2 but before step 3, rxe never captures that change. When the remote sends an RDMA Read targeting that MR, rxe looks up the R_key, but the altered iova does not match the iova stored in the MR, causing the RDMA Read request to fail. Reported-by: Anna Schumaker <schumaker.anna@gmail.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>		2018-11-29 17:10:06 -07:00
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rdmavt	IB/{hfi1, qib, rdmavt}: Move ruc_loopback to rdmavt	2018-10-03 16:38:28 -06:00
rxe	rxe: IB_WR_REG_MR does not capture MR's iova field	2018-11-29 17:10:06 -07:00
Makefile	Soft RoCE driver	2016-08-04 11:13:12 -04:00