Patch "iser-target: Add new state ISER_CONN_BOUND to isert_conn" has been added to the 4.5-stable tree

Patch "iser-target: Add new state ISER_CONN_BOUND to isert_conn" has been added to the 4.5-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    iser-target: Add new state ISER_CONN_BOUND to isert_conn

to the 4.5-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     iser-target-add-new-state-iser_conn_bound-to-isert_conn.patch
and it can be found in the queue-4.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From aea92980601f7ddfcb3c54caa53a43726314fe46 Mon Sep 17 00:00:00 2001
From: Jenny Derzhavetz <jennyf@mellanox.com>
Date: Wed, 24 Feb 2016 19:23:59 +0200
Subject: iser-target: Add new state ISER_CONN_BOUND to isert_conn

From: Jenny Derzhavetz <jennyf@mellanox.com>

commit aea92980601f7ddfcb3c54caa53a43726314fe46 upstream.

We need an indication that isert_conn->iscsi_conn binding has
happened so we'll know not to invoke a connection reinstatement
on an unbound connection which will lead to a bogus isert_conn->conn
dereferece.

Signed-off-by: Jenny Derzhavetz <jennyf@mellanox.com>
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/ulp/isert/ib_isert.c |    7 +++++--
 drivers/infiniband/ulp/isert/ib_isert.h |    1 +
 2 files changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/ulp/isert/ib_isert.c
+++ b/drivers/infiniband/ulp/isert/ib_isert.c
@@ -825,7 +825,7 @@ isert_put_conn(struct isert_conn *isert_
  * @isert_conn: isert connection struct
  *
  * Notes:
- * In case the connection state is FULL_FEATURE, move state
+ * In case the connection state is BOUND, move state
  * to TEMINATING and start teardown sequence (rdma_disconnect).
  * In case the connection state is UP, complete flush as well.
  *
@@ -841,6 +841,7 @@ isert_conn_terminate(struct isert_conn *
 	case ISER_CONN_TERMINATING:
 		break;
 	case ISER_CONN_UP:
+	case ISER_CONN_BOUND:
 	case ISER_CONN_FULL_FEATURE: /* FALLTHRU */
 		isert_info("Terminating conn %p state %d\n",
 			   isert_conn, isert_conn->state);
@@ -2075,7 +2076,8 @@ isert_cq_comp_err(struct isert_conn *ise
 			isert_completion_put(desc, isert_cmd, ib_dev, true);
 	} else {
 		isert_conn->post_recv_buf_count--;
-		if (!isert_conn->post_recv_buf_count)
+		if (!isert_conn->post_recv_buf_count &&
+		    isert_conn->state >= ISER_CONN_BOUND)
 			iscsit_cause_connection_reinstatement(isert_conn->conn, 0);
 	}
 }
@@ -3215,6 +3217,7 @@ accept_wait:
 
 	conn->context = isert_conn;
 	isert_conn->conn = conn;
+	isert_conn->state = ISER_CONN_BOUND;
 
 	isert_set_conn_info(np, conn, isert_conn);
 
--- a/drivers/infiniband/ulp/isert/ib_isert.h
+++ b/drivers/infiniband/ulp/isert/ib_isert.h
@@ -84,6 +84,7 @@ enum iser_ib_op_code {
 enum iser_conn_state {
 	ISER_CONN_INIT,
 	ISER_CONN_UP,
+	ISER_CONN_BOUND,
 	ISER_CONN_FULL_FEATURE,
 	ISER_CONN_TERMINATING,
 	ISER_CONN_DOWN,


Patches currently in stable-queue which might be from jennyf@mellanox.com are

queue-4.5/iser-target-fix-identification-of-login-rx-descriptor-type.patch
queue-4.5/iser-target-add-new-state-iser_conn_bound-to-isert_conn.patch
queue-4.5/iser-target-rework-connection-termination.patch
queue-4.5/iser-target-separate-flows-for-np-listeners-and-connections-cma-events.patch