linux-kernel - [PATCH rdma-next v2 1/3] RDMA/mana_ib: Access remote atomic for MRs

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Message-Id: <1744621234-26114-2-git-send-email-kotaranov@linux.microsoft.com>
Date: Mon, 14 Apr 2025 02:00:32 -0700
From: Konstantin Taranov <kotaranov@...ux.microsoft.com>
To: kotaranov@...rosoft.com,
	pabeni@...hat.com,
	haiyangz@...rosoft.com,
	kys@...rosoft.com,
	edumazet@...gle.com,
	kuba@...nel.org,
	davem@...emloft.net,
	decui@...rosoft.com,
	wei.liu@...nel.org,
	longli@...rosoft.com,
	jgg@...pe.ca,
	leon@...nel.org
Cc: linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: [PATCH rdma-next v2 1/3] RDMA/mana_ib: Access remote atomic for MRs

From: Konstantin Taranov <kotaranov@...rosoft.com>

Add IB_ACCESS_REMOTE_ATOMIC to the valid flags for MRs and use
the corresponding flag bit during MR creation in the HW.

Signed-off-by: Konstantin Taranov <kotaranov@...rosoft.com>
---
 drivers/infiniband/hw/mana/mr.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/mana/mr.c b/drivers/infiniband/hw/mana/mr.c
index f99557e..e4a9f53 100644
--- a/drivers/infiniband/hw/mana/mr.c
+++ b/drivers/infiniband/hw/mana/mr.c
@@ -5,8 +5,8 @@
 
 #include "mana_ib.h"
 
-#define VALID_MR_FLAGS                                                         \
-	(IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ)
+#define VALID_MR_FLAGS (IB_ACCESS_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ |\
+			IB_ACCESS_REMOTE_ATOMIC)
 
 #define VALID_DMA_MR_FLAGS (IB_ACCESS_LOCAL_WRITE)
 
@@ -24,6 +24,9 @@ mana_ib_verbs_to_gdma_access_flags(int access_flags)
 	if (access_flags & IB_ACCESS_REMOTE_READ)
 		flags |= GDMA_ACCESS_FLAG_REMOTE_READ;
 
+	if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
+		flags |= GDMA_ACCESS_FLAG_REMOTE_ATOMIC;
+
 	return flags;
 }
 
-- 
2.43.0