netdev - [PATCH rdma-next 05/10] RDMA/srp: Enable Relaxed Ordering

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Date:   Mon,  5 Apr 2021 08:23:59 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>
Cc:     Avihai Horon <avihaih@...dia.com>,
        Adit Ranadive <aditr@...are.com>,
        Anna Schumaker <anna.schumaker@...app.com>,
        Ariel Elior <aelior@...vell.com>,
        Bart Van Assche <bvanassche@....org>,
        Bernard Metzler <bmt@...ich.ibm.com>,
        Christoph Hellwig <hch@....de>,
        Chuck Lever <chuck.lever@...cle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Dennis Dalessandro <dennis.dalessandro@...nelisnetworks.com>,
        Devesh Sharma <devesh.sharma@...adcom.com>,
        Faisal Latif <faisal.latif@...el.com>,
        Jack Wang <jinpu.wang@...os.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "J. Bruce Fields" <bfields@...ldses.org>,
        Jens Axboe <axboe@...com>,
        Karsten Graul <kgraul@...ux.ibm.com>,
        Keith Busch <kbusch@...nel.org>, Lijun Ou <oulijun@...wei.com>,
        linux-cifs@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nfs@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-rdma@...r.kernel.org, linux-s390@...r.kernel.org,
        Max Gurtovoy <maxg@...lanox.com>,
        Max Gurtovoy <mgurtovoy@...dia.com>,
        "Md. Haris Iqbal" <haris.iqbal@...os.com>,
        Michael Guralnik <michaelgur@...dia.com>,
        Michal Kalderon <mkalderon@...vell.com>,
        Mike Marciniszyn <mike.marciniszyn@...nelisnetworks.com>,
        Naresh Kumar PBS <nareshkumar.pbs@...adcom.com>,
        netdev@...r.kernel.org, Potnuri Bharat Teja <bharat@...lsio.com>,
        rds-devel@....oracle.com, Sagi Grimberg <sagi@...mberg.me>,
        samba-technical@...ts.samba.org,
        Santosh Shilimkar <santosh.shilimkar@...cle.com>,
        Selvin Xavier <selvin.xavier@...adcom.com>,
        Shiraz Saleem <shiraz.saleem@...el.com>,
        Somnath Kotur <somnath.kotur@...adcom.com>,
        Sriharsha Basavapatna <sriharsha.basavapatna@...adcom.com>,
        Steve French <sfrench@...ba.org>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        VMware PV-Drivers <pv-drivers@...are.com>,
        Weihang Li <liweihang@...wei.com>,
        Yishai Hadas <yishaih@...dia.com>,
        Zhu Yanjun <zyjzyj2000@...il.com>
Subject: [PATCH rdma-next 05/10] RDMA/srp: Enable Relaxed Ordering

From: Avihai Horon <avihaih@...dia.com>

Enable Relaxed Ordering for srp.

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@...dia.com>
Reviewed-by: Max Gurtovoy <maxg@...lanox.com>
Reviewed-by: Michael Guralnik <michaelgur@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/infiniband/ulp/srp/ib_srp.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
index 8481ad769ba4..0026660c3ead 100644
--- a/drivers/infiniband/ulp/srp/ib_srp.c
+++ b/drivers/infiniband/ulp/srp/ib_srp.c
@@ -436,7 +436,8 @@ static struct srp_fr_pool *srp_create_fr_pool(struct ib_device *device,
 		mr_type = IB_MR_TYPE_MEM_REG;
 
 	for (i = 0, d = &pool->desc[0]; i < pool->size; i++, d++) {
-		mr = ib_alloc_mr(pd, mr_type, max_page_list_len, 0);
+		mr = ib_alloc_mr(pd, mr_type, max_page_list_len,
+				 IB_ACCESS_RELAXED_ORDERING);
 		if (IS_ERR(mr)) {
 			ret = PTR_ERR(mr);
 			if (ret == -ENOMEM)
@@ -1487,9 +1488,8 @@ static int srp_map_finish_fr(struct srp_map_state *state,
 	wr.wr.send_flags = 0;
 	wr.mr = desc->mr;
 	wr.key = desc->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);
 
 	*state->fr.next++ = desc;
 	state->nmdesc++;
-- 
2.30.2