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| author | Vikas Chaudhary <vikas.chaudhary@qlogic.com> | 2010-07-22 15:27:43 +0400 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-28 18:06:05 +0400 |
| commit | fe4f0bdeea788a8ac049c097895cb2e4044f18b1 (patch) | |
| tree | 04e599de27ded09d3f6a57bc8f1d9e8db07a3094 /drivers/scsi/scsi_transport_iscsi.c | |
| parent | caf19d38607108304cd8cc67ed21378017f69e8a (diff) | |
| download | linux-fe4f0bdeea788a8ac049c097895cb2e4044f18b1.tar.xz | |
[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>
Diffstat (limited to 'drivers/scsi/scsi_transport_iscsi.c')
| -rw-r--r-- | drivers/scsi/scsi_transport_iscsi.c | 43 |
1 files changed, 38 insertions, 5 deletions
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index b9aec304872c..d4b96623aa59 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -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); |