netdev - [PATCH rdma-next 10/13] RDMA/mana_ib: implement req_notify

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Message-Id: <1737394039-28772-11-git-send-email-kotaranov@linux.microsoft.com>
Date: Mon, 20 Jan 2025 09:27:16 -0800
From: Konstantin Taranov <kotaranov@...ux.microsoft.com>
To: kotaranov@...rosoft.com,
	shirazsaleem@...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,
	sharmaajay@...rosoft.com,
	longli@...rosoft.com,
	jgg@...pe.ca,
	leon@...nel.org
Cc: linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-hyperv@...r.kernel.org
Subject: [PATCH rdma-next 10/13] RDMA/mana_ib: implement req_notify_cq

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

Arm a CQ when req_notify_cq is called.

Signed-off-by: Konstantin Taranov <kotaranov@...rosoft.com>
Reviewed-by: Shiraz Saleem <shirazsaleem@...rosoft.com>
---
 drivers/infiniband/hw/mana/cq.c                 | 12 ++++++++++++
 drivers/infiniband/hw/mana/device.c             |  1 +
 drivers/infiniband/hw/mana/mana_ib.h            |  2 ++
 drivers/net/ethernet/microsoft/mana/gdma_main.c |  1 +
 4 files changed, 16 insertions(+)

diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c
index d26d82d..82f1462 100644
--- a/drivers/infiniband/hw/mana/cq.c
+++ b/drivers/infiniband/hw/mana/cq.c
@@ -168,3 +168,15 @@ void mana_ib_remove_cq_cb(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
 	kfree(gc->cq_table[cq->queue.id]);
 	gc->cq_table[cq->queue.id] = NULL;
 }
+
+int mana_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
+{
+	struct mana_ib_cq *cq = container_of(ibcq, struct mana_ib_cq, ibcq);
+	struct gdma_queue *gdma_cq = cq->queue.kmem;
+
+	if (!gdma_cq)
+		return -EINVAL;
+
+	mana_gd_ring_cq(gdma_cq, SET_ARM_BIT);
+	return 0;
+}
diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index 1da86c3..63e12c3 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -47,6 +47,7 @@ static const struct ib_device_ops mana_ib_dev_ops = {
 	.query_pkey = mana_ib_query_pkey,
 	.query_port = mana_ib_query_port,
 	.reg_user_mr = mana_ib_reg_user_mr,
+	.req_notify_cq = mana_ib_arm_cq,
 
 	INIT_RDMA_OBJ_SIZE(ib_ah, mana_ib_ah, ibah),
 	INIT_RDMA_OBJ_SIZE(ib_cq, mana_ib_cq, ibcq),
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 6265c39..bd34ad6 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -595,4 +595,6 @@ int mana_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
 		      const struct ib_recv_wr **bad_wr);
 int mana_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
 		      const struct ib_send_wr **bad_wr);
+
+int mana_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
 #endif
diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index 409e4e8..823f7e7 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -344,6 +344,7 @@ void mana_gd_ring_cq(struct gdma_queue *cq, u8 arm_bit)
 	mana_gd_ring_doorbell(gc, cq->gdma_dev->doorbell, cq->type, cq->id,
 			      head, arm_bit);
 }
+EXPORT_SYMBOL_NS(mana_gd_ring_cq, NET_MANA);
 
 static void mana_gd_process_eqe(struct gdma_queue *eq)
 {
-- 
2.43.0