#include <linux/random.h>
#include <net/ip6_checksum.h>
#include <linux/bitops.h>
-
+#include <linux/qed/qede_roce.h>
#include "qede.h"
static char version[] =
struct ethtool_drvinfo drvinfo;
struct qede_dev *edev;
- /* Currently only support name change */
- if (event != NETDEV_CHANGENAME)
+ if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
goto done;
/* Check whether this is a qede device */
goto done;
edev = netdev_priv(ndev);
- /* Notify qed of the name change */
- if (!edev->ops || !edev->ops->common)
- goto done;
- edev->ops->common->set_id(edev->cdev, edev->ndev->name,
- "qede");
+ switch (event) {
+ case NETDEV_CHANGENAME:
+ /* Notify qed of the name change */
+ if (!edev->ops || !edev->ops->common)
+ goto done;
+ edev->ops->common->set_id(edev->cdev, edev->ndev->name, "qede");
+ break;
+ case NETDEV_CHANGEADDR:
+ edev = netdev_priv(ndev);
+ qede_roce_event_changeaddr(edev);
+ break;
+ }
done:
return NOTIFY_DONE;
qede_init_ndev(edev);
+ rc = qede_roce_dev_add(edev);
+ if (rc)
+ goto err3;
+
rc = register_netdev(edev->ndev);
if (rc) {
DP_NOTICE(edev, "Cannot register net-device\n");
- goto err3;
+ goto err4;
}
edev->ops->common->set_id(cdev, edev->ndev->name, DRV_MODULE_VERSION);
return 0;
+err4:
+ qede_roce_dev_remove(edev);
err3:
free_netdev(edev->ndev);
err2:
DP_INFO(edev, "Starting qede_remove\n");
cancel_delayed_work_sync(&edev->sp_task);
+
unregister_netdev(ndev);
+ qede_roce_dev_remove(edev);
+
edev->ops->common->set_power_state(cdev, PCI_D0);
pci_set_drvdata(pdev, NULL);
DP_INFO(edev, "Starting qede unload\n");
+ qede_roce_dev_event_close(edev);
mutex_lock(&edev->qede_lock);
edev->state = QEDE_STATE_CLOSED;
/* Query whether link is already-up */
memset(&link_output, 0, sizeof(link_output));
edev->ops->common->get_link(edev->cdev, &link_output);
+ qede_roce_dev_event_open(edev);
qede_link_update(edev, &link_output);
DP_INFO(edev, "Ending successfully qede load\n");
--- /dev/null
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016 QLogic Corporation
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and /or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/qed/qede_roce.h>
+#include "qede.h"
+
+static struct qedr_driver *qedr_drv;
+static LIST_HEAD(qedr_dev_list);
+static DEFINE_MUTEX(qedr_dev_list_lock);
+
+bool qede_roce_supported(struct qede_dev *dev)
+{
+ return dev->dev_info.common.rdma_supported;
+}
+
+static void _qede_roce_dev_add(struct qede_dev *edev)
+{
+ if (!qedr_drv)
+ return;
+
+ edev->rdma_info.qedr_dev = qedr_drv->add(edev->cdev, edev->pdev,
+ edev->ndev);
+}
+
+static int qede_roce_create_wq(struct qede_dev *edev)
+{
+ INIT_LIST_HEAD(&edev->rdma_info.roce_event_list);
+ edev->rdma_info.roce_wq = create_singlethread_workqueue("roce_wq");
+ if (!edev->rdma_info.roce_wq) {
+ DP_NOTICE(edev, "qedr: Could not create workqueue\n");
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void qede_roce_cleanup_event(struct qede_dev *edev)
+{
+ struct list_head *head = &edev->rdma_info.roce_event_list;
+ struct qede_roce_event_work *event_node;
+
+ flush_workqueue(edev->rdma_info.roce_wq);
+ while (!list_empty(head)) {
+ event_node = list_entry(head->next, struct qede_roce_event_work,
+ list);
+ cancel_work_sync(&event_node->work);
+ list_del(&event_node->list);
+ kfree(event_node);
+ }
+}
+
+static void qede_roce_destroy_wq(struct qede_dev *edev)
+{
+ qede_roce_cleanup_event(edev);
+ destroy_workqueue(edev->rdma_info.roce_wq);
+}
+
+int qede_roce_dev_add(struct qede_dev *edev)
+{
+ int rc = 0;
+
+ if (qede_roce_supported(edev)) {
+ rc = qede_roce_create_wq(edev);
+ if (rc)
+ return rc;
+
+ INIT_LIST_HEAD(&edev->rdma_info.entry);
+ mutex_lock(&qedr_dev_list_lock);
+ list_add_tail(&edev->rdma_info.entry, &qedr_dev_list);
+ _qede_roce_dev_add(edev);
+ mutex_unlock(&qedr_dev_list_lock);
+ }
+
+ return rc;
+}
+
+static void _qede_roce_dev_remove(struct qede_dev *edev)
+{
+ if (qedr_drv && qedr_drv->remove && edev->rdma_info.qedr_dev)
+ qedr_drv->remove(edev->rdma_info.qedr_dev);
+ edev->rdma_info.qedr_dev = NULL;
+}
+
+void qede_roce_dev_remove(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ qede_roce_destroy_wq(edev);
+ mutex_lock(&qedr_dev_list_lock);
+ _qede_roce_dev_remove(edev);
+ list_del(&edev->rdma_info.entry);
+ mutex_unlock(&qedr_dev_list_lock);
+}
+
+static void _qede_roce_dev_open(struct qede_dev *edev)
+{
+ if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+ qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_UP);
+}
+
+static void qede_roce_dev_open(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ mutex_lock(&qedr_dev_list_lock);
+ _qede_roce_dev_open(edev);
+ mutex_unlock(&qedr_dev_list_lock);
+}
+
+static void _qede_roce_dev_close(struct qede_dev *edev)
+{
+ if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+ qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_DOWN);
+}
+
+static void qede_roce_dev_close(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ mutex_lock(&qedr_dev_list_lock);
+ _qede_roce_dev_close(edev);
+ mutex_unlock(&qedr_dev_list_lock);
+}
+
+static void qede_roce_dev_shutdown(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ mutex_lock(&qedr_dev_list_lock);
+ if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+ qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_CLOSE);
+ mutex_unlock(&qedr_dev_list_lock);
+}
+
+int qede_roce_register_driver(struct qedr_driver *drv)
+{
+ struct qede_dev *edev;
+ u8 qedr_counter = 0;
+
+ mutex_lock(&qedr_dev_list_lock);
+ if (qedr_drv) {
+ mutex_unlock(&qedr_dev_list_lock);
+ return -EINVAL;
+ }
+ qedr_drv = drv;
+
+ list_for_each_entry(edev, &qedr_dev_list, rdma_info.entry) {
+ struct net_device *ndev;
+
+ qedr_counter++;
+ _qede_roce_dev_add(edev);
+ ndev = edev->ndev;
+ if (netif_running(ndev) && netif_oper_up(ndev))
+ _qede_roce_dev_open(edev);
+ }
+ mutex_unlock(&qedr_dev_list_lock);
+
+ DP_INFO(edev, "qedr: discovered and registered %d RoCE funcs\n",
+ qedr_counter);
+
+ return 0;
+}
+EXPORT_SYMBOL(qede_roce_register_driver);
+
+void qede_roce_unregister_driver(struct qedr_driver *drv)
+{
+ struct qede_dev *edev;
+
+ mutex_lock(&qedr_dev_list_lock);
+ list_for_each_entry(edev, &qedr_dev_list, rdma_info.entry) {
+ if (edev->rdma_info.qedr_dev)
+ _qede_roce_dev_remove(edev);
+ }
+ qedr_drv = NULL;
+ mutex_unlock(&qedr_dev_list_lock);
+}
+EXPORT_SYMBOL(qede_roce_unregister_driver);
+
+static void qede_roce_changeaddr(struct qede_dev *edev)
+{
+ if (!qede_roce_supported(edev))
+ return;
+
+ if (qedr_drv && edev->rdma_info.qedr_dev && qedr_drv->notify)
+ qedr_drv->notify(edev->rdma_info.qedr_dev, QEDE_CHANGE_ADDR);
+}
+
+struct qede_roce_event_work *qede_roce_get_free_event_node(struct qede_dev
+ *edev)
+{
+ struct qede_roce_event_work *event_node = NULL;
+ struct list_head *list_node = NULL;
+ bool found = false;
+
+ list_for_each(list_node, &edev->rdma_info.roce_event_list) {
+ event_node = list_entry(list_node, struct qede_roce_event_work,
+ list);
+ if (!work_pending(&event_node->work)) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ event_node = kzalloc(sizeof(*event_node), GFP_KERNEL);
+ if (!event_node) {
+ DP_NOTICE(edev,
+ "qedr: Could not allocate memory for roce work\n");
+ return NULL;
+ }
+ list_add_tail(&event_node->list,
+ &edev->rdma_info.roce_event_list);
+ }
+
+ return event_node;
+}
+
+static void qede_roce_handle_event(struct work_struct *work)
+{
+ struct qede_roce_event_work *event_node;
+ enum qede_roce_event event;
+ struct qede_dev *edev;
+
+ event_node = container_of(work, struct qede_roce_event_work, work);
+ event = event_node->event;
+ edev = event_node->ptr;
+
+ switch (event) {
+ case QEDE_UP:
+ qede_roce_dev_open(edev);
+ break;
+ case QEDE_DOWN:
+ qede_roce_dev_close(edev);
+ break;
+ case QEDE_CLOSE:
+ qede_roce_dev_shutdown(edev);
+ break;
+ case QEDE_CHANGE_ADDR:
+ qede_roce_changeaddr(edev);
+ break;
+ default:
+ DP_NOTICE(edev, "Invalid roce event %d", event);
+ }
+}
+
+static void qede_roce_add_event(struct qede_dev *edev,
+ enum qede_roce_event event)
+{
+ struct qede_roce_event_work *event_node;
+
+ if (!edev->rdma_info.qedr_dev)
+ return;
+
+ event_node = qede_roce_get_free_event_node(edev);
+ if (!event_node)
+ return;
+
+ event_node->event = event;
+ event_node->ptr = edev;
+
+ INIT_WORK(&event_node->work, qede_roce_handle_event);
+ queue_work(edev->rdma_info.roce_wq, &event_node->work);
+}
+
+void qede_roce_dev_event_open(struct qede_dev *edev)
+{
+ qede_roce_add_event(edev, QEDE_UP);
+}
+
+void qede_roce_dev_event_close(struct qede_dev *edev)
+{
+ qede_roce_add_event(edev, QEDE_DOWN);
+}
+
+void qede_roce_event_changeaddr(struct qede_dev *edev)
+{
+ qede_roce_add_event(edev, QEDE_CHANGE_ADDR);
+}
--- /dev/null
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016 QLogic Corporation
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and /or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef QEDE_ROCE_H
+#define QEDE_ROCE_H
+
+struct qedr_dev;
+struct qed_dev;
+struct qede_dev;
+
+enum qede_roce_event {
+ QEDE_UP,
+ QEDE_DOWN,
+ QEDE_CHANGE_ADDR,
+ QEDE_CLOSE
+};
+
+struct qede_roce_event_work {
+ struct list_head list;
+ struct work_struct work;
+ void *ptr;
+ enum qede_roce_event event;
+};
+
+struct qedr_driver {
+ unsigned char name[32];
+
+ struct qedr_dev* (*add)(struct qed_dev *, struct pci_dev *,
+ struct net_device *);
+
+ void (*remove)(struct qedr_dev *);
+ void (*notify)(struct qedr_dev *, enum qede_roce_event);
+};
+
+/* APIs for RoCE driver to register callback handlers,
+ * which will be invoked when device is added, removed, ifup, ifdown
+ */
+int qede_roce_register_driver(struct qedr_driver *drv);
+void qede_roce_unregister_driver(struct qedr_driver *drv);
+
+bool qede_roce_supported(struct qede_dev *dev);
+
+#if IS_ENABLED(CONFIG_INFINIBAND_QEDR)
+int qede_roce_dev_add(struct qede_dev *dev);
+void qede_roce_dev_event_open(struct qede_dev *dev);
+void qede_roce_dev_event_close(struct qede_dev *dev);
+void qede_roce_dev_remove(struct qede_dev *dev);
+void qede_roce_event_changeaddr(struct qede_dev *qedr);
+#else
+static inline int qede_roce_dev_add(struct qede_dev *dev)
+{
+ return 0;
+}
+
+static inline void qede_roce_dev_event_open(struct qede_dev *dev) {}
+static inline void qede_roce_dev_event_close(struct qede_dev *dev) {}
+static inline void qede_roce_dev_remove(struct qede_dev *dev) {}
+static inline void qede_roce_event_changeaddr(struct qede_dev *qedr) {}
+#endif
+#endif
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff