linux_kernel/include/linux/qed/qede_rdma.h

/* QLogic qedr NIC Driver
 * Copyright (c) 2015-2017  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

#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/workqueue.h>

struct qedr_dev;
struct qed_dev;
struct qede_dev;

enum qede_rdma_event {
	QEDE_UP,
	QEDE_DOWN,
	QEDE_CHANGE_ADDR,
	QEDE_CLOSE
};

struct qede_rdma_event_work {
	struct list_head list;
	struct work_struct work;
	void *ptr;
	enum qede_rdma_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_rdma_event);
};

/* APIs for RDMA driver to register callback handlers,
 * which will be invoked when device is added, removed, ifup, ifdown
 */
int qede_rdma_register_driver(struct qedr_driver *drv);
void qede_rdma_unregister_driver(struct qedr_driver *drv);

bool qede_rdma_supported(struct qede_dev *dev);

#if IS_ENABLED(CONFIG_QED_RDMA)
int qede_rdma_dev_add(struct qede_dev *dev);
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);
void qede_rdma_event_changeaddr(struct qede_dev *edr);

#else
static inline int qede_rdma_dev_add(struct qede_dev *dev)
{
	return 0;
}

static inline void qede_rdma_dev_event_open(struct qede_dev *dev) {}
static inline void qede_rdma_dev_event_close(struct qede_dev *dev) {}
static inline void qede_rdma_dev_remove(struct qede_dev *dev) {}
static inline void qede_rdma_event_changeaddr(struct qede_dev *edr) {}
#endif
#endif