path: root/drivers/infiniband/core/sysfs.c

/*
 * Copyright (c) 2004, 2005 Topspin Communications.  All rights reserved.
 * Copyright (c) 2005 Mellanox Technologies Ltd.  All rights reserved.
 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
 *
 * 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 "core_priv.h"

#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/string.h>
#include <linux/netdevice.h>
#include <linux/ethtool.h>

#include <rdma/ib_mad.h>
#include <rdma/ib_pma.h>

struct ib_port;

struct gid_attr_group {
	struct ib_port		*port;
	struct kobject		kobj;
	struct attribute_group	ndev;
	struct attribute_group	type;
};
struct ib_port {
	struct kobject         kobj;
	struct ib_device      *ibdev;
	struct gid_attr_group *gid_attr_group;
	struct attribute_group gid_group;
	struct attribute_group pkey_group;
	struct attribute_group *pma_table;
	struct attribute_group *hw_stats_ag;
	struct rdma_hw_stats   *hw_stats;
	u8                     port_num;
};

struct port_attribute {
	struct attribute attr;
	ssize_t (*show)(struct ib_port *, struct port_attribute *, char *buf);
	ssize_t (*store)(struct ib_port *, struct port_attribute *,
			 const char *buf, size_t count);
};

#define PORT_ATTR(_name, _mode, _show, _store) \
struct port_attribute port_attr_##_name = __ATTR(_name, _mode, _show, _store)

#define PORT_ATTR_RO(_name) \
struct port_attribute port_attr_##_name = __ATTR_RO(_name)

struct port_table_attribute {
	struct port_attribute	attr;
	char			name[8];
	int			index;
	__be16			attr_id;
};

struct hw_stats_attribute {
	struct attribute	attr;
	ssize_t			(*show)(struct kobject *kobj,
					struct attribute *attr, char *buf);
	ssize_t			(*store)(struct kobject *kobj,
					 struct attribute *attr,
					 const char *buf,
					 size_t count);
	int			index;
	u8			port_num;
};

static ssize_t port_attr_show(struct kobject *kobj,
			      struct attribute *attr, char *buf)
{
	struct port_attribute *port_attr =
		container_of(attr, struct port_attribute, attr);
	struct ib_port *p = container_of(kobj, struct ib_port, kobj);

	if (!port_attr->show)
		return -EIO;

	return port_attr->show(p, port_attr, buf);
}

static