[ 3.5.y.z extended stable ] Patch "qla2xxx: Look up LUN for abort requests" has been added to staging queue

[Herton Ronaldo Krzesinski]

This is a note to let you know that I have just added a patch titled

    qla2xxx: Look up LUN for abort requests

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

>From d738c9751b67082da94e3637d07294a50a009923 Mon Sep 17 00:00:00 2001
From: Steve Hodgson <steve at purestorage.com>
Date: Fri, 16 Nov 2012 08:06:17 -0800
Subject: [PATCH] qla2xxx: Look up LUN for abort requests

commit 06e97b489006f28e23bb028febfa1c01c266d676 upstream.

Search through the list of pending commands on the session list to find
the command the initiator is actually aborting, so that we can pass the
correct LUN to the core TMR handling code.

(nab: Allow abort requests to work to LUN=0 with mainline target code)

Signed-off-by: Steve Hodgson <steve at purestorage.com>
Signed-off-by: Roland Dreier <roland at purestorage.com>
Signed-off-by: Nicholas Bellinger <nab at risingtidesystems.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
 drivers/scsi/qla2xxx/qla_target.c |   21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index f6021cd..714a97d 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -1264,8 +1264,27 @@ static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 	struct abts_recv_from_24xx *abts, struct qla_tgt_sess *sess)
 {
 	struct qla_hw_data *ha = vha->hw;
+	struct se_session *se_sess = sess->se_sess;
 	struct qla_tgt_mgmt_cmd *mcmd;
+	struct se_cmd *se_cmd;
+	u32 lun = 0;
 	int rc;
+	bool found_lun = false;
+
+	spin_lock(&se_sess->sess_cmd_lock);
+	list_for_each_entry(se_cmd, &se_sess->sess_cmd_list, se_cmd_list) {
+		struct qla_tgt_cmd *cmd =
+			container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+		if (cmd->tag == abts->exchange_addr_to_abort) {
+			lun = cmd->unpacked_lun;
+			found_lun = true;
+			break;
+		}
+	}
+	spin_unlock(&se_sess->sess_cmd_lock);
+
+	if (!found_lun)
+		return -ENOENT;

 	ql_dbg(ql_dbg_tgt_mgt, vha, 0xf00f,
 	    "qla_target(%d): task abort (tag=%d)\n",
@@ -1283,7 +1302,7 @@ static int __qlt_24xx_handle_abts(struct scsi_qla_host *vha,
 	mcmd->sess = sess;
 	memcpy(&mcmd->orig_iocb.abts, abts, sizeof(mcmd->orig_iocb.abts));

-	rc = ha->tgt.tgt_ops->handle_tmr(mcmd, 0, TMR_ABORT_TASK,
+	rc = ha->tgt.tgt_ops->handle_tmr(mcmd, lun, TMR_ABORT_TASK,
 	    abts->exchange_addr_to_abort);
 	if (rc != 0) {
 		ql_dbg(ql_dbg_tgt_mgt, vha, 0xf052,
--
1.7.9.5