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Commit fe4f0bde authored by Vikas Chaudhary's avatar Vikas Chaudhary Committed by James Bottomley
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[SCSI] iscsi_transport: Modidify recovery_tmo from sysfs 



Added support to modify session->recovery_tmo from sysfs

Signed-off-by: default avatarVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: default avatarRavi Anand <ravi.anand@qlogic.com>
Acked-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent caf19d38

drivers/scsi/scsi_transport_iscsi.c

+38 −5
Original line number Diff line number Diff line
@@ -1783,14 +1783,42 @@ show_priv_session_##field(struct device *dev, \ 
{									\

	struct iscsi_cls_session *session = 				\

			iscsi_dev_to_session(dev->parent);		\

	if (session->field == -1)					\

		return sprintf(buf, "off\n");				\

	return sprintf(buf, format"\n", session->field);		\

}



#define iscsi_priv_session_attr(field, format)				\

#define iscsi_priv_session_attr_store(field)				\

static ssize_t								\

store_priv_session_##field(struct device *dev,				\

			   struct device_attribute *attr,		\

			   const char *buf, size_t count)		\

{									\

	int val;							\

	char *cp;							\

	struct iscsi_cls_session *session =				\

		iscsi_dev_to_session(dev->parent);			\

	if ((session->state == ISCSI_SESSION_FREE) ||			\

	    (session->state == ISCSI_SESSION_FAILED))			\

		return -EBUSY;						\

	if (strncmp(buf, "off", 3) == 0)				\

		session->field = -1;					\

	else {								\

		val = simple_strtoul(buf, &cp, 0);			\

		if (*cp != '\0' && *cp != '\n')				\

			return -EINVAL;					\

		session->field = val;					\

	}								\

	return count;							\

}



#define iscsi_priv_session_rw_attr(field, format)			\

	iscsi_priv_session_attr_show(field, format)			\

static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO, show_priv_session_##field, \

			NULL)

iscsi_priv_session_attr(recovery_tmo, "%d");

	iscsi_priv_session_attr_store(field)				\

static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO | S_IWUGO,		\

			show_priv_session_##field,			\

			store_priv_session_##field)

iscsi_priv_session_rw_attr(recovery_tmo, "%d");



/*

 * iSCSI host attrs
@@ -1821,6 +1849,11 @@ do { \ 
	count++;							\

} while (0)



#define SETUP_PRIV_SESSION_RW_ATTR(field)				\

do {									\

	priv->session_attrs[count] = &dev_attr_priv_sess_##field;	\

	count++;							\

} while (0)



#define SETUP_SESSION_RD_ATTR(field, param_flag)			\

do {									\
@@ -2008,7 +2041,7 @@ iscsi_register_transport(struct iscsi_transport *tt) 
	SETUP_SESSION_RD_ATTR(ifacename, ISCSI_IFACE_NAME);

	SETUP_SESSION_RD_ATTR(initiatorname, ISCSI_INITIATOR_NAME);

	SETUP_SESSION_RD_ATTR(targetalias, ISCSI_TARGET_ALIAS);

	SETUP_PRIV_SESSION_RD_ATTR(recovery_tmo);

	SETUP_PRIV_SESSION_RW_ATTR(recovery_tmo);

	SETUP_PRIV_SESSION_RD_ATTR(state);



	BUG_ON(count > ISCSI_SESSION_ATTRS);