Exemplo n.º 1
0
/**
 * bnx2i_show_ccell_info - returns command cell (HQ) size
 * @dev:	device pointer
 * @buf:	buffer to return current SQ size parameter
 *
 * returns per-connection TCP history queue size parameter
 */
static ssize_t bnx2i_show_ccell_info(struct class_device *dev,
				     char *buf)
{
	struct bnx2i_hba *hba = bnx2i_dev_to_hba(dev);

	return sprintf(buf, "0x%x\n", hba->num_ccell);
}
Exemplo n.º 2
0
/**
 * bnx2i_set_sq_info - update send queue (SQ) size parameter
 * @dev:	device pointer
 * @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 class_device *dev,
				 const char *buf, size_t count)
{
	struct bnx2i_hba *hba = bnx2i_dev_to_hba(dev);
	u32 val;
	int max_sq_size;

	if (hba->ofld_conns_active)
		goto skip_config;

	if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type))
		max_sq_size = BNX2I_5770X_SQ_WQES_MAX;
	else
		max_sq_size = BNX2I_570X_SQ_WQES_MAX;

	if (sscanf(buf, " 0x%x ", &val) > 0) {
		if ((val >= BNX2I_SQ_WQES_MIN) && (val <= max_sq_size) &&
		    (is_power_of_2(val)))
			hba->max_sqes = val;
	}

	return count;

skip_config:
	printk(KERN_ERR "bnx2i: device busy, cannot change SQ size\n");
	return 0;
}
Exemplo n.º 3
0
/**
 * bnx2i_show_sq_info - return(s currently configured send queue (SQ) size
 * @dev:	device pointer
 * @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)
{
	struct bnx2i_hba *hba = bnx2i_dev_to_hba(dev);

	return sprintf(buf, "0x%x\n", hba->max_sqes);
}
Exemplo n.º 4
0
/**
 * bnx2i_get_link_state - set command cell (HQ) size
 * @dev:	device pointer
 * @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 class_device *dev,
				    const char *buf, size_t count)
{
	u32 val;
	struct bnx2i_hba *hba = bnx2i_dev_to_hba(dev);

	if (hba->ofld_conns_active)
		goto skip_config;

	if (sscanf(buf, " 0x%x ", &val) > 0) {
		if ((val >= BNX2I_CCELLS_MIN) &&
		    (val <= BNX2I_CCELLS_MAX)) {
			hba->num_ccell = val;
		}
	}

	return count;

skip_config:
	printk(KERN_ERR "bnx2i: device busy, cannot change CCELL size\n");
	return 0;
}