iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

RDMA/bnxt_re: Unconditionly fence non wire memory operations

Browse Source 
[ Upstream commit a45bc17b360d75fac9ced85e99fda14bf38b4dc3 ]

HW requires an unconditonal fence for all non-wire memory operations
through SQ. This guarantees the completions of these memory operations.

Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Devesh Sharma 2018-02-26 01:51:37 -08:00 committed by Greg Kroah-Hartman
parent b73bc820c4
commit 466199b440
1 changed files with 11 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/infiniband/hw/bnxt_re/ib_verbs.c
View File

@ -1963,10 +1963,13 @@ static int bnxt_re_build_inv_wqe(struct ib_send_wr *wr,
wqe->type = BNXT_QPLIB_SWQE_TYPE_LOCAL_INV;
wqe->local_inv.inv_l_key = wr->ex.invalidate_rkey;
/* Need unconditional fence for local invalidate
* opcode to work as expected.
*/
wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE;
if (wr->send_flags & IB_SEND_SIGNALED)
wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP;
if (wr->send_flags & IB_SEND_FENCE)
wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE;
if (wr->send_flags & IB_SEND_SOLICITED)
wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SOLICIT_EVENT;
@ -1987,8 +1990,12 @@ static int bnxt_re_build_reg_wqe(struct ib_reg_wr *wr,
wqe->frmr.levels = qplib_frpl->hwq.level + 1;
wqe->type = BNXT_QPLIB_SWQE_TYPE_REG_MR;
if (wr->wr.send_flags & IB_SEND_FENCE)
wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE;
/* Need unconditional fence for reg_mr
* opcode to function as expected.
*/
wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_UC_FENCE;
if (wr->wr.send_flags & IB_SEND_SIGNALED)
wqe->flags |= BNXT_QPLIB_SWQE_FLAGS_SIGNAL_COMP;