[PATCH rdma-next 03/10] RDMA/iser: Enable Relaxed Ordering

Leon Romanovsky
2021-04-05T05:24:24Z

From: Avihai Horon <avihaih@nvidia.com>

Enable Relaxed Ordering for iser.

Relaxed Ordering is an optional access flag and as such, it is ignored
by vendors that don't support it.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Michael Guralnik <michaelgur@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
drivers/infiniband/ulp/iser/iser_memory.c | 10 ++++------
drivers/infiniband/ulp/iser/iser_verbs.c | 6 ++++--
2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/infiniband/ulp/iser/iser_memory.c b/drivers/infiniband/ulp/iser/iser_memory.c
index afec40da9b58..29849c9e82e8 100644
--- a/drivers/infiniband/ulp/iser/iser_memory.c
+++ b/drivers/infiniband/ulp/iser/iser_memory.c
@@ -271,9 +271,8 @@ iser_reg_sig_mr(struct iscsi_iser_task *iser_task,
wr->wr.send_flags = 0;
wr->mr = mr;
wr->key = mr->rkey;
- wr->access = IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_READ |
- IB_ACCESS_REMOTE_WRITE;
+ wr->access = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_READ |
+ IB_ACCESS_REMOTE_WRITE | IB_ACCESS_RELAXED_ORDERING;
rsc->mr_valid = 1;

sig_reg->sge.lkey = mr->lkey;
@@ -318,9 +317,8 @@ static int iser_fast_reg_mr(struct iscsi_iser_task *iser_task,
wr->wr.num_sge = 0;
wr->mr = mr;
wr->key = mr->rkey;
- wr->access = IB_ACCESS_LOCAL_WRITE |
- IB_ACCESS_REMOTE_WRITE |
- IB_ACCESS_REMOTE_READ;
+ wr->access = IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE |
+ IB_ACCESS_REMOTE_READ | IB_ACCESS_RELAXED_ORDERING;

rsc->mr_valid = 1;

diff --git a/drivers/infiniband/ulp/iser/iser_verbs.c b/drivers/infiniband/ulp/iser/iser_verbs.c
index 3c370ee25f2f..1e236b1cf29b 100644
--- a/drivers/infiniband/ulp/iser/iser_verbs.c
+++ b/drivers/infiniband/ulp/iser/iser_verbs.c
@@ -121,7 +121,8 @@ iser_create_fastreg_desc(struct iser_device *device,
else
mr_type = IB_MR_TYPE_MEM_REG;

- desc->rsc.mr = ib_alloc_mr(pd, mr_type, size, 0);
+ desc->rsc.mr = ib_alloc_mr(pd, mr_type, size,
+ IB_ACCESS_RELAXED_ORDERING);
if (IS_ERR(desc->rsc.mr)) {
ret = PTR_ERR(desc->rsc.mr);
iser_err("Failed to allocate ib_fast_reg_mr err=%d\n", ret);
@@ -129,7 +130,8 @@ iser_create_fastreg_desc(struct iser_device *device,
}

if (pi_enable) {
- desc->rsc.sig_mr = ib_alloc_mr_integrity(pd, size, size, 0);
+ desc->rsc.sig_mr = ib_alloc_mr_integrity(pd, size, size,
+ IB_ACCESS_RELAXED_ORDERING);
if (IS_ERR(desc->rsc.sig_mr)) {
ret = PTR_ERR(desc->rsc.sig_mr);
iser_err("Failed to allocate sig_mr err=%d\n", ret);
--
2.30.2