linux/drivers/scsi/bnx2i/bnx2i_sysfs.c

/* bnx2i_sysfs.c: QLogic NetXtreme II iSCSI driver.
 *
 * Copyright (c) 2004 - 2013 Broadcom Corporation
 * Copyright (c) 2014, QLogic Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 *
 * Written by: Anil Veerabhadrappa ([email protected])
 * Previously Maintained by: Eddie Wai ([email protected])
 * Maintained by: [email protected]
 */

#include "bnx2i.h"

/**
 * bnx2i_dev_to_hba - maps dev pointer to adapter struct
 * @dev:	device pointer
 *
 * Map device to hba structure
 */
static inline struct bnx2i_hba *bnx2i_dev_to_hba(struct device *dev)
{ … }


/**
 * bnx2i_show_sq_info - return(s currently configured send queue (SQ) size
 * @dev:	device pointer
 * @attr:	device attribute (unused)
 * @buf:	buffer to return current SQ size parameter
 *
 * Returns current SQ size parameter, this paramater determines the number
 * outstanding iSCSI commands supported on a connection
 */
static ssize_t bnx2i_show_sq_info(struct device *dev,
				  struct device_attribute *attr, char *buf)
{ … }


/**
 * bnx2i_set_sq_info - update send queue (SQ) size parameter
 * @dev:	device pointer
 * @attr:	device attribute (unused)
 * @buf:	buffer to return current SQ size parameter
 * @count:	parameter buffer size
 *
 * Interface for user to change shared queue size allocated for each conn
 * Must be within SQ limits and a power of 2. For the latter this is needed
 * because of how libiscsi preallocates tasks.
 */
static ssize_t bnx2i_set_sq_info(struct device *dev,
				 struct device_attribute *attr,
				 const char *buf, size_t count)
{ … }


/**
 * bnx2i_show_ccell_info - returns command cell (HQ) size
 * @dev:	device pointer
 * @attr:	device attribute (unused)
 * @buf:	buffer to return current SQ size parameter
 *
 * returns per-connection TCP history queue size parameter
 */
static ssize_t bnx2i_show_ccell_info(struct device *dev,
				     struct device_attribute *attr, char *buf)
{ … }


/**
 * bnx2i_set_ccell_info - set command cell (HQ) size
 * @dev:	device pointer
 * @attr:	device attribute (unused)
 * @buf:	buffer to return current SQ size parameter
 * @count:	parameter buffer size
 *
 * updates per-connection TCP history queue size parameter
 */
static ssize_t bnx2i_set_ccell_info(struct device *dev,
				    struct device_attribute *attr,
				    const char *buf, size_t count)
{ … }


static DEVICE_ATTR(sq_size, S_IRUGO | S_IWUSR,
		   bnx2i_show_sq_info, bnx2i_set_sq_info);
static DEVICE_ATTR(num_ccell, S_IRUGO | S_IWUSR,
		   bnx2i_show_ccell_info, bnx2i_set_ccell_info);

static struct attribute *bnx2i_dev_attributes[] = …;

static const struct attribute_group bnx2i_dev_attr_group = …;

const struct attribute_group *bnx2i_dev_groups[] = …;