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.

Link: https://lore.kernel.org/r/20200902165741.8355-6-michal.kalderon@marvell.com
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

diff --git a/drivers/net/ethernet/qlogic/qede/qede_ethtool.c b/drivers/net/ethernet/qlogic/qede/qede_ethtool.c
index b9aa638..bedbb85 100644 (file)
--- 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 769ec2f..2f65980 100644 (file)
--- 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 072da2f..0d5564a 100644 (file)
--- 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,