linux-kernel - [Patch v6 5/5] RDMA/mana

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Message-Id: <1694802270-17452-6-git-send-email-sharmaajay@linuxonhyperv.com>
Date:   Fri, 15 Sep 2023 11:24:30 -0700
From:   sharmaajay@...uxonhyperv.com
To:     Long Li <longli@...rosoft.com>, Jason Gunthorpe <jgg@...pe.ca>,
        Leon Romanovsky <leon@...nel.org>,
        Dexuan Cui <decui@...rosoft.com>, Wei Liu <wei.liu@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     linux-rdma@...r.kernel.org, linux-hyperv@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ajay Sharma <sharmaajay@...rosoft.com>
Subject: [Patch v6 5/5] RDMA/mana_ib : Send event to qp

From: Ajay Sharma <sharmaajay@...rosoft.com>

Send the QP fatal error event to only the
context that created the qp.

Signed-off-by: Ajay Sharma <sharmaajay@...rosoft.com>
---
 drivers/infiniband/hw/mana/device.c  |  4 ++++
 drivers/infiniband/hw/mana/main.c    | 11 ++++++++---
 drivers/infiniband/hw/mana/mana_ib.h | 18 +++++++++---------
 drivers/infiniband/hw/mana/qp.c      |  2 ++
 4 files changed, 23 insertions(+), 12 deletions(-)

diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index e15da43c73a0..fcc8083e2783 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -101,6 +101,8 @@ static int mana_ib_probe(struct auxiliary_device *adev,
 	if (ret)
 		ibdev_dbg(&mib_dev->ib_dev, "Failed to get caps, use defaults");
 
+	xa_init(&mib_dev->rq_to_qp_lookup_table);
+
 	ret = ib_register_device(&mib_dev->ib_dev, "mana_%d",
 				 mdev->gdma_context->dev);
 	if (ret)
@@ -112,6 +114,7 @@ static int mana_ib_probe(struct auxiliary_device *adev,
 
 destroy_adapter:
 	mana_ib_destroy_adapter(mib_dev);
+	xa_destroy(&mib_dev->rq_to_qp_lookup_table);
 free_error_eq:
 	mana_gd_destroy_queue(mib_dev->gc, mib_dev->fatal_err_eq);
 deregister_device:
@@ -129,6 +132,7 @@ static void mana_ib_remove(struct auxiliary_device *adev)
 	mana_ib_destroy_adapter(mib_dev);
 	mana_gd_deregister_device(&mib_dev->gc->mana_ib);
 	ib_unregister_device(&mib_dev->ib_dev);
+	xa_destroy(&mib_dev->rq_to_qp_lookup_table);
 	ib_dealloc_device(&mib_dev->ib_dev);
 }
 
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 82923475267d..29be8fd1ec7f 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -556,13 +556,18 @@ static void mana_ib_critical_event_handler(void *ctx, struct gdma_queue *queue,
 {
 	struct mana_ib_dev *mib_dev = (struct mana_ib_dev *)ctx;
 	struct ib_event mib_event;
+	struct mana_ib_qp *qp;
+	u64 rq_id;
 	switch (event->type) {
 	case GDMA_EQE_SOC_EVENT_NOTIFICATION:
+		rq_id = event->details[0] & 0xFFFFFF;
+		qp = xa_load(&mib_dev->rq_to_qp_lookup_table, rq_id);
 		mib_event.event = IB_EVENT_QP_FATAL;
 		mib_event.device = &mib_dev->ib_dev;
-		mib_event.element.qp =
-				(struct ib_qp*)(event->details[0] & 0xFFFFFF);
-		ib_dispatch_event(&mib_event);
+		if (qp && qp->ibqp.event_handler)
+			qp->ibqp.event_handler(&mib_event, qp->ibqp.qp_context);
+		else
+			ibdev_dbg(&mib_dev->ib_dev, "found no qp or event handler");
 		ibdev_dbg(&mib_dev->ib_dev, "Received critical notification");
 		break;
 	default:
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 6b9406738cb2..243572b52336 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -48,15 +48,6 @@ struct mana_ib_adapter_caps {
 	u32 max_inline_data_size;
 };
 
-struct mana_ib_dev {
-	struct ib_device ib_dev;
-	struct gdma_dev *gdma_dev;
-	struct gdma_context *gc;
-	struct gdma_queue *fatal_err_eq;
-	mana_handle_t adapter_handle;
-	struct mana_ib_adapter_caps adapter_caps;
-};
-
 struct mana_ib_wq {
 	struct ib_wq ibwq;
 	struct ib_umem *umem;
@@ -113,6 +104,15 @@ struct mana_ib_ucontext {
 	u32 doorbell;
 };
 
+struct mana_ib_dev {
+	struct ib_device ib_dev;
+	struct gdma_dev *gdma_dev;
+	struct gdma_context *gc;
+	struct gdma_queue *fatal_err_eq;
+	mana_handle_t adapter_handle;
+	struct mana_ib_adapter_caps adapter_caps;
+	struct xarray rq_to_qp_lookup_table;
+};
 struct mana_ib_rwq_ind_table {
 	struct ib_rwq_ind_table ib_ind_table;
 };
diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c
index ef3275ac92a0..19fae28985c3 100644
--- a/drivers/infiniband/hw/mana/qp.c
+++ b/drivers/infiniband/hw/mana/qp.c
@@ -210,6 +210,8 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd,
 		wq->id = wq_spec.queue_index;
 		cq->id = cq_spec.queue_index;
 
+		xa_store(&mib_dev->rq_to_qp_lookup_table, wq->id, qp, GFP_KERNEL);
+
 		ibdev_dbg(&mib_dev->ib_dev,
 			  "ret %d rx_object 0x%llx wq id %llu cq id %llu\n",
 			  ret, wq->rx_object, wq->id, cq->id);
-- 
2.25.1