netdev - [PATCH rdma-next 5/8] qede: Notify qedr when mtu has changed

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Date:   Wed, 2 Sep 2020 19:57:38 +0300
From:   Michal Kalderon <michal.kalderon@...vell.com>
To:     <mkalderon@...vell.com>, <aelior@...vell.com>,
        <dledford@...hat.com>, <jgg@...pe.ca>, <davem@...emloft.net>
CC:     <linux-rdma@...r.kernel.org>, <netdev@...r.kernel.org>,
        Michal Kalderon <michal.kalderon@...vell.com>
Subject: [PATCH rdma-next 5/8] qede: Notify qedr when mtu has changed

MTU change on ethtool is currently not supported for iWARP.
Notify qedr driver so that appropriate logging can take
place.

Signed-off-by: Michal Kalderon <michal.kalderon@...vell.com>
---
 drivers/net/ethernet/qlogic/qede/qede_ethtool.c |  4 +++-
 drivers/net/ethernet/qlogic/qede/qede_rdma.c    | 17 +++++++++++++++++
 include/linux/qed/qede_rdma.h                   |  4 +++-
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index b9aa6384563b..bedbb85a179a 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
@@ -1026,7 +1026,9 @@ int qede_change_mtu(struct net_device *ndev, int new_mtu)
 	args.u.mtu = new_mtu;
 	args.func = &qede_update_mtu;
 	qede_reload(edev, &args, false);
-
+#if IS_ENABLED(CONFIG_QED_RDMA)
+	qede_rdma_event_change_mtu(edev);
+#endif
 	edev->ops->common->update_mtu(edev->cdev, new_mtu);
 
 	return 0;
diff --git a/drivers/net/ethernet/qlogic/qede/qede_rdma.c b/drivers/net/ethernet/qlogic/qede/qede_rdma.c
index 769ec2f4d0b7..2f6598086d9b 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_rdma.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_rdma.c
@@ -234,6 +234,15 @@ static void qede_rdma_changeaddr(struct qede_dev *edev)
 		qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_CHANGE_ADDR);
 }
 
+static void qede_rdma_change_mtu(struct qede_dev *edev)
+{
+	if (qede_rdma_supported(edev)) {
+		if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+			qedr_drv->notify(edev->rdma_info.qedr_dev,
+					 QEDE_CHANGE_MTU);
+	}
+}
+
 static struct qede_rdma_event_work *
 qede_rdma_get_free_event_node(struct qede_dev *edev)
 {
@@ -287,6 +296,9 @@ static void qede_rdma_handle_event(struct work_struct *work)
 	case QEDE_CHANGE_ADDR:
 		qede_rdma_changeaddr(edev);
 		break;
+	case QEDE_CHANGE_MTU:
+		qede_rdma_change_mtu(edev);
+		break;
 	default:
 		DP_NOTICE(edev, "Invalid rdma event %d", event);
 	}
@@ -338,3 +350,8 @@ void qede_rdma_event_changeaddr(struct qede_dev *edev)
 {
 	qede_rdma_add_event(edev, QEDE_CHANGE_ADDR);
 }
+
+void qede_rdma_event_change_mtu(struct qede_dev *edev)
+{
+	qede_rdma_add_event(edev, QEDE_CHANGE_MTU);
+}
diff --git a/include/linux/qed/qede_rdma.h b/include/linux/qed/qede_rdma.h
index 072da2f6da37..0d5564a59a59 100644
--- a/include/linux/qed/qede_rdma.h
+++ b/include/linux/qed/qede_rdma.h
@@ -20,7 +20,8 @@ enum qede_rdma_event {
 	QEDE_UP,
 	QEDE_DOWN,
 	QEDE_CHANGE_ADDR,
-	QEDE_CLOSE
+	QEDE_CLOSE,
+	QEDE_CHANGE_MTU,
 };
 
 struct qede_rdma_event_work {
@@ -54,6 +55,7 @@ void qede_rdma_dev_event_open(struct qede_dev *dev);
 void qede_rdma_dev_event_close(struct qede_dev *dev);
 void qede_rdma_dev_remove(struct qede_dev *dev, bool recovery);
 void qede_rdma_event_changeaddr(struct qede_dev *edr);
+void qede_rdma_event_change_mtu(struct qede_dev *edev);
 
 #else
 static inline int qede_rdma_dev_add(struct qede_dev *dev,
-- 
2.14.5