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| author | Jayamohan Kallickal <jayamohank@serverengines.com> | 2010-02-20 08:02:10 +0530 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-03-03 17:39:04 +0530 |
| commit | 309ce156aa27f29338438011d292a8d6496623d3 (patch) | |
| tree | 7d0554a3a6c7c15b612b8eeb00991c0e54cdaf1e /drivers/scsi/libiscsi.c | |
| parent | d7b4627f5f3390a2f350f16c047b3fc3eccce6d8 (diff) | |
| download | blackbird-op-linux-309ce156aa27f29338438011d292a8d6496623d3.tar.gz blackbird-op-linux-309ce156aa27f29338438011d292a8d6496623d3.zip | |
[SCSI] libiscsi: Make iscsi_eh_target_reset start with session reset
The iscsi_eh_target_reset has been modified to attempt
target reset only. If it fails, then iscsi_eh_session_reset
will be called.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/libiscsi.c')
| -rw-r--r-- | drivers/scsi/libiscsi.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index 703eb6a88790..685eaec53218 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -2338,7 +2338,7 @@ EXPORT_SYMBOL_GPL(iscsi_session_recovery_timedout); * This function will wait for a relogin, session termination from * userspace, or a recovery/replacement timeout. */ -static int iscsi_eh_session_reset(struct scsi_cmnd *sc) +int iscsi_eh_session_reset(struct scsi_cmnd *sc) { struct iscsi_cls_session *cls_session; struct iscsi_session *session; @@ -2389,6 +2389,7 @@ failed: mutex_unlock(&session->eh_mutex); return SUCCESS; } +EXPORT_SYMBOL_GPL(iscsi_eh_session_reset); static void iscsi_prep_tgt_reset_pdu(struct scsi_cmnd *sc, struct iscsi_tm *hdr) { @@ -2403,8 +2404,7 @@ static void iscsi_prep_tgt_reset_pdu(struct scsi_cmnd *sc, struct iscsi_tm *hdr) * iscsi_eh_target_reset - reset target * @sc: scsi command * - * This will attempt to send a warm target reset. If that fails - * then we will drop the session and attempt ERL0 recovery. + * This will attempt to send a warm target reset. */ int iscsi_eh_target_reset(struct scsi_cmnd *sc) { @@ -2476,12 +2476,27 @@ done: ISCSI_DBG_EH(session, "tgt %s reset result = %s\n", session->targetname, rc == SUCCESS ? "SUCCESS" : "FAILED"); mutex_unlock(&session->eh_mutex); + return rc; +} +EXPORT_SYMBOL_GPL(iscsi_eh_target_reset); +/** + * iscsi_eh_recover_target - reset target and possibly the session + * @sc: scsi command + * + * This will attempt to send a warm target reset. If that fails, + * we will escalate to ERL0 session recovery. + */ +int iscsi_eh_recover_target(struct scsi_cmnd *sc) +{ + int rc; + + rc = iscsi_eh_target_reset(sc); if (rc == FAILED) rc = iscsi_eh_session_reset(sc); return rc; } -EXPORT_SYMBOL_GPL(iscsi_eh_target_reset); +EXPORT_SYMBOL_GPL(iscsi_eh_recover_target); /* * Pre-allocate a pool of @max items of @item_size. By default, the pool |
