[SCSI] iscsi_transport: Modidify recovery_tmo from sysfs
Added support to modify session->recovery_tmo from sysfs Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by: Ravi Anand <ravi.anand@qlogic.com> Acked-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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@ -1783,14 +1783,42 @@ show_priv_session_##field(struct device *dev, \
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{ \
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struct iscsi_cls_session *session = \
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iscsi_dev_to_session(dev->parent); \
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if (session->field == -1) \
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return sprintf(buf, "off\n"); \
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return sprintf(buf, format"\n", session->field); \
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}
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#define iscsi_priv_session_attr(field, format) \
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#define iscsi_priv_session_attr_store(field) \
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static ssize_t \
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store_priv_session_##field(struct device *dev, \
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struct device_attribute *attr, \
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const char *buf, size_t count) \
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{ \
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int val; \
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char *cp; \
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struct iscsi_cls_session *session = \
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iscsi_dev_to_session(dev->parent); \
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if ((session->state == ISCSI_SESSION_FREE) || \
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(session->state == ISCSI_SESSION_FAILED)) \
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return -EBUSY; \
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if (strncmp(buf, "off", 3) == 0) \
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session->field = -1; \
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else { \
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val = simple_strtoul(buf, &cp, 0); \
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if (*cp != '\0' && *cp != '\n') \
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return -EINVAL; \
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session->field = val; \
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} \
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return count; \
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}
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#define iscsi_priv_session_rw_attr(field, format) \
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iscsi_priv_session_attr_show(field, format) \
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static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO, show_priv_session_##field, \
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NULL)
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iscsi_priv_session_attr(recovery_tmo, "%d");
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iscsi_priv_session_attr_store(field) \
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static ISCSI_CLASS_ATTR(priv_sess, field, S_IRUGO | S_IWUGO, \
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show_priv_session_##field, \
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store_priv_session_##field)
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iscsi_priv_session_rw_attr(recovery_tmo, "%d");
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/*
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* iSCSI host attrs
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@ -1821,6 +1849,11 @@ do { \
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count++; \
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} while (0)
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#define SETUP_PRIV_SESSION_RW_ATTR(field) \
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do { \
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priv->session_attrs[count] = &dev_attr_priv_sess_##field; \
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count++; \
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} while (0)
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#define SETUP_SESSION_RD_ATTR(field, param_flag) \
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do { \
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@ -2008,7 +2041,7 @@ iscsi_register_transport(struct iscsi_transport *tt)
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SETUP_SESSION_RD_ATTR(ifacename, ISCSI_IFACE_NAME);
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SETUP_SESSION_RD_ATTR(initiatorname, ISCSI_INITIATOR_NAME);
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SETUP_SESSION_RD_ATTR(targetalias, ISCSI_TARGET_ALIAS);
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SETUP_PRIV_SESSION_RD_ATTR(recovery_tmo);
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SETUP_PRIV_SESSION_RW_ATTR(recovery_tmo);
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SETUP_PRIV_SESSION_RD_ATTR(state);
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BUG_ON(count > ISCSI_SESSION_ATTRS);
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